From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- .../exoplayer2/AudioBecomingNoisyManager.java | 81 + .../android/exoplayer2/AudioFocusManager.java | 397 +++ .../com/google/android/exoplayer2/BasePlayer.java | 209 ++ .../google/android/exoplayer2/BaseRenderer.java | 436 +++ .../com/google/android/exoplayer2/C.java | 1160 ++++++++ .../android/exoplayer2/ControlDispatcher.java | 75 + .../exoplayer2/DefaultControlDispatcher.java | 55 + .../android/exoplayer2/DefaultLoadControl.java | 473 ++++ .../android/exoplayer2/DefaultMediaClock.java | 197 ++ .../exoplayer2/DefaultRenderersFactory.java | 580 ++++ .../android/exoplayer2/ExoPlaybackException.java | 233 ++ .../com/google/android/exoplayer2/ExoPlayer.java | 404 +++ .../android/exoplayer2/ExoPlayerFactory.java | 350 +++ .../google/android/exoplayer2/ExoPlayerImpl.java | 848 ++++++ .../android/exoplayer2/ExoPlayerImplInternal.java | 2045 ++++++++++++++ .../android/exoplayer2/ExoPlayerLibraryInfo.java | 86 + .../com/google/android/exoplayer2/Format.java | 1750 ++++++++++++ .../google/android/exoplayer2/FormatHolder.java | 43 + .../exoplayer2/IllegalSeekPositionException.java | 48 + .../com/google/android/exoplayer2/LoadControl.java | 113 + .../android/exoplayer2/MediaPeriodHolder.java | 432 +++ .../google/android/exoplayer2/MediaPeriodInfo.java | 141 + .../android/exoplayer2/MediaPeriodQueue.java | 743 +++++ .../android/exoplayer2/NoSampleRenderer.java | 306 +++ .../google/android/exoplayer2/ParserException.java | 51 + .../google/android/exoplayer2/PlaybackInfo.java | 358 +++ .../android/exoplayer2/PlaybackParameters.java | 113 + .../android/exoplayer2/PlaybackPreparer.java | 23 + .../com/google/android/exoplayer2/Player.java | 1040 +++++++ .../google/android/exoplayer2/PlayerMessage.java | 301 +++ .../com/google/android/exoplayer2/Renderer.java | 306 +++ .../android/exoplayer2/RendererCapabilities.java | 293 ++ .../android/exoplayer2/RendererConfiguration.java | 62 + .../android/exoplayer2/RenderersFactory.java | 50 + .../google/android/exoplayer2/SeekParameters.java | 91 + .../google/android/exoplayer2/SimpleExoPlayer.java | 1845 +++++++++++++ .../com/google/android/exoplayer2/Timeline.java | 837 ++++++ .../google/android/exoplayer2/WakeLockManager.java | 101 + .../google/android/exoplayer2/WifiLockManager.java | 94 + .../exoplayer2/analytics/AnalyticsCollector.java | 881 ++++++ .../exoplayer2/analytics/AnalyticsListener.java | 514 ++++ .../analytics/DefaultAnalyticsListener.java | 23 + .../analytics/DefaultPlaybackSessionManager.java | 355 +++ .../analytics/PlaybackSessionManager.java | 120 + .../exoplayer2/analytics/PlaybackStats.java | 980 +++++++ .../analytics/PlaybackStatsListener.java | 1059 ++++++++ .../android/exoplayer2/analytics/package-info.java | 19 + .../google/android/exoplayer2/audio/Ac3Util.java | 584 ++++ .../google/android/exoplayer2/audio/Ac4Util.java | 250 ++ .../android/exoplayer2/audio/AudioAttributes.java | 162 ++ .../exoplayer2/audio/AudioCapabilities.java | 161 ++ .../audio/AudioCapabilitiesReceiver.java | 166 ++ .../exoplayer2/audio/AudioDecoderException.java | 35 + .../android/exoplayer2/audio/AudioListener.java | 41 + .../android/exoplayer2/audio/AudioProcessor.java | 148 + .../audio/AudioRendererEventListener.java | 174 ++ .../google/android/exoplayer2/audio/AudioSink.java | 329 +++ .../exoplayer2/audio/AudioTimestampPoller.java | 309 +++ .../audio/AudioTrackPositionTracker.java | 545 ++++ .../android/exoplayer2/audio/AuxEffectInfo.java | 85 + .../exoplayer2/audio/BaseAudioProcessor.java | 143 + .../audio/ChannelMappingAudioProcessor.java | 99 + .../android/exoplayer2/audio/DefaultAudioSink.java | 1474 ++++++++++ .../google/android/exoplayer2/audio/DtsUtil.java | 217 ++ .../audio/FloatResamplingAudioProcessor.java | 109 + .../exoplayer2/audio/ForwardingAudioSink.java | 151 ++ .../exoplayer2/audio/MediaCodecAudioRenderer.java | 1036 +++++++ .../exoplayer2/audio/ResamplingAudioProcessor.java | 134 + .../audio/SilenceSkippingAudioProcessor.java | 352 +++ .../audio/SimpleDecoderAudioRenderer.java | 758 ++++++ .../com/google/android/exoplayer2/audio/Sonic.java | 506 ++++ .../exoplayer2/audio/SonicAudioProcessor.java | 277 ++ .../exoplayer2/audio/TeeAudioProcessor.java | 235 ++ .../exoplayer2/audio/TrimmingAudioProcessor.java | 178 ++ .../google/android/exoplayer2/audio/WavUtil.java | 91 + .../android/exoplayer2/audio/package-info.java | 19 + .../exoplayer2/database/DatabaseIOException.java | 31 + .../exoplayer2/database/DatabaseProvider.java | 56 + .../database/DefaultDatabaseProvider.java | 42 + .../exoplayer2/database/ExoDatabaseProvider.java | 95 + .../android/exoplayer2/database/VersionTable.java | 170 ++ .../android/exoplayer2/database/package-info.java | 19 + .../google/android/exoplayer2/decoder/Buffer.java | 100 + .../android/exoplayer2/decoder/CryptoInfo.java | 146 + .../google/android/exoplayer2/decoder/Decoder.java | 73 + .../exoplayer2/decoder/DecoderCounters.java | 105 + .../exoplayer2/decoder/DecoderInputBuffer.java | 209 ++ .../android/exoplayer2/decoder/OutputBuffer.java | 38 + .../android/exoplayer2/decoder/SimpleDecoder.java | 314 +++ .../exoplayer2/decoder/SimpleOutputBuffer.java | 65 + .../android/exoplayer2/decoder/package-info.java | 19 + .../android/exoplayer2/drm/ClearKeyUtil.java | 97 + .../exoplayer2/drm/DecryptionException.java | 37 + .../android/exoplayer2/drm/DefaultDrmSession.java | 607 +++++ .../drm/DefaultDrmSessionEventListener.java | 51 + .../exoplayer2/drm/DefaultDrmSessionManager.java | 691 +++++ .../google/android/exoplayer2/drm/DrmInitData.java | 425 +++ .../google/android/exoplayer2/drm/DrmSession.java | 144 + .../android/exoplayer2/drm/DrmSessionManager.java | 121 + .../android/exoplayer2/drm/DummyExoMediaDrm.java | 146 + .../exoplayer2/drm/ErrorStateDrmSession.java | 74 + .../android/exoplayer2/drm/ExoMediaCrypto.java | 19 + .../google/android/exoplayer2/drm/ExoMediaDrm.java | 342 +++ .../exoplayer2/drm/FrameworkMediaCrypto.java | 59 + .../android/exoplayer2/drm/FrameworkMediaDrm.java | 440 +++ .../exoplayer2/drm/HttpMediaDrmCallback.java | 195 ++ .../exoplayer2/drm/KeysExpiredException.java | 22 + .../exoplayer2/drm/LocalMediaDrmCallback.java | 51 + .../android/exoplayer2/drm/MediaDrmCallback.java | 46 + .../exoplayer2/drm/OfflineLicenseHelper.java | 266 ++ .../exoplayer2/drm/UnsupportedDrmException.java | 67 + .../android/exoplayer2/drm/WidevineUtil.java | 66 + .../android/exoplayer2/drm/package-info.java | 19 + .../exoplayer2/extractor/BinarySearchSeeker.java | 538 ++++ .../android/exoplayer2/extractor/ChunkIndex.java | 121 + .../extractor/ConstantBitrateSeekMap.java | 123 + .../extractor/DefaultExtractorInput.java | 308 +++ .../extractor/DefaultExtractorsFactory.java | 269 ++ .../exoplayer2/extractor/DummyExtractorOutput.java | 35 + .../exoplayer2/extractor/DummyTrackOutput.java | 62 + .../android/exoplayer2/extractor/Extractor.java | 125 + .../exoplayer2/extractor/ExtractorInput.java | 280 ++ .../exoplayer2/extractor/ExtractorOutput.java | 48 + .../exoplayer2/extractor/ExtractorUtil.java | 52 + .../exoplayer2/extractor/ExtractorsFactory.java | 23 + .../exoplayer2/extractor/FlacFrameReader.java | 336 +++ .../exoplayer2/extractor/FlacMetadataReader.java | 312 +++ .../exoplayer2/extractor/FlacSeekTableSeekMap.java | 84 + .../exoplayer2/extractor/GaplessInfoHolder.java | 131 + .../android/exoplayer2/extractor/Id3Peeker.java | 87 + .../exoplayer2/extractor/MpegAudioHeader.java | 275 ++ .../exoplayer2/extractor/PositionHolder.java | 28 + .../android/exoplayer2/extractor/SeekMap.java | 141 + .../android/exoplayer2/extractor/SeekPoint.java | 64 + .../android/exoplayer2/extractor/TrackOutput.java | 147 + .../exoplayer2/extractor/VorbisBitArray.java | 129 + .../android/exoplayer2/extractor/VorbisUtil.java | 522 ++++ .../exoplayer2/extractor/amr/AmrExtractor.java | 383 +++ .../extractor/flac/FlacBinarySearchSeeker.java | 131 + .../exoplayer2/extractor/flac/FlacExtractor.java | 411 +++ .../extractor/flv/AudioTagPayloadReader.java | 130 + .../exoplayer2/extractor/flv/FlvExtractor.java | 308 +++ .../extractor/flv/ScriptTagPayloadReader.java | 227 ++ .../exoplayer2/extractor/flv/TagPayloadReader.java | 87 + .../extractor/flv/VideoTagPayloadReader.java | 141 + .../extractor/mkv/DefaultEbmlReader.java | 260 ++ .../exoplayer2/extractor/mkv/EbmlProcessor.java | 150 ++ .../exoplayer2/extractor/mkv/EbmlReader.java | 57 + .../extractor/mkv/MatroskaExtractor.java | 2331 ++++++++++++++++ .../android/exoplayer2/extractor/mkv/Sniffer.java | 114 + .../exoplayer2/extractor/mkv/VarintReader.java | 155 ++ .../extractor/mp3/ConstantBitrateSeeker.java | 46 + .../exoplayer2/extractor/mp3/MlltSeeker.java | 125 + .../exoplayer2/extractor/mp3/Mp3Extractor.java | 482 ++++ .../android/exoplayer2/extractor/mp3/Seeker.java | 60 + .../exoplayer2/extractor/mp3/VbriSeeker.java | 136 + .../exoplayer2/extractor/mp3/XingSeeker.java | 188 ++ .../android/exoplayer2/extractor/mp4/Atom.java | 558 ++++ .../exoplayer2/extractor/mp4/AtomParsers.java | 1607 +++++++++++ .../extractor/mp4/DefaultSampleValues.java | 32 + .../extractor/mp4/FixedSampleSizeRechunker.java | 114 + .../extractor/mp4/FragmentedMp4Extractor.java | 1660 ++++++++++++ .../extractor/mp4/MdtaMetadataEntry.java | 115 + .../exoplayer2/extractor/mp4/MetadataUtil.java | 588 ++++ .../exoplayer2/extractor/mp4/Mp4Extractor.java | 824 ++++++ .../exoplayer2/extractor/mp4/PsshAtomUtil.java | 208 ++ .../android/exoplayer2/extractor/mp4/Sniffer.java | 201 ++ .../android/exoplayer2/extractor/mp4/Track.java | 148 + .../extractor/mp4/TrackEncryptionBox.java | 103 + .../exoplayer2/extractor/mp4/TrackFragment.java | 197 ++ .../exoplayer2/extractor/mp4/TrackSampleTable.java | 108 + .../exoplayer2/extractor/ogg/DefaultOggSeeker.java | 313 +++ .../exoplayer2/extractor/ogg/FlacReader.java | 143 + .../exoplayer2/extractor/ogg/OggExtractor.java | 114 + .../exoplayer2/extractor/ogg/OggPacket.java | 155 ++ .../exoplayer2/extractor/ogg/OggPageHeader.java | 135 + .../exoplayer2/extractor/ogg/OggSeeker.java | 57 + .../exoplayer2/extractor/ogg/OpusReader.java | 132 + .../exoplayer2/extractor/ogg/StreamReader.java | 268 ++ .../exoplayer2/extractor/ogg/VorbisReader.java | 198 ++ .../exoplayer2/extractor/rawcc/RawCcExtractor.java | 170 ++ .../exoplayer2/extractor/ts/Ac3Extractor.java | 149 ++ .../android/exoplayer2/extractor/ts/Ac3Reader.java | 209 ++ .../exoplayer2/extractor/ts/Ac4Extractor.java | 156 ++ .../android/exoplayer2/extractor/ts/Ac4Reader.java | 216 ++ .../exoplayer2/extractor/ts/AdtsExtractor.java | 332 +++ .../exoplayer2/extractor/ts/AdtsReader.java | 532 ++++ .../ts/DefaultTsPayloadReaderFactory.java | 283 ++ .../android/exoplayer2/extractor/ts/DtsReader.java | 181 ++ .../exoplayer2/extractor/ts/DvbSubtitleReader.java | 130 + .../extractor/ts/ElementaryStreamReader.java | 63 + .../exoplayer2/extractor/ts/H262Reader.java | 333 +++ .../exoplayer2/extractor/ts/H264Reader.java | 567 ++++ .../exoplayer2/extractor/ts/H265Reader.java | 494 ++++ .../android/exoplayer2/extractor/ts/Id3Reader.java | 116 + .../exoplayer2/extractor/ts/LatmReader.java | 310 +++ .../exoplayer2/extractor/ts/MpegAudioReader.java | 223 ++ .../extractor/ts/NalUnitTargetBuffer.java | 109 + .../android/exoplayer2/extractor/ts/PesReader.java | 241 ++ .../extractor/ts/PsBinarySearchSeeker.java | 209 ++ .../exoplayer2/extractor/ts/PsDurationReader.java | 259 ++ .../exoplayer2/extractor/ts/PsExtractor.java | 397 +++ .../extractor/ts/SectionPayloadReader.java | 49 + .../exoplayer2/extractor/ts/SectionReader.java | 134 + .../android/exoplayer2/extractor/ts/SeiReader.java | 73 + .../extractor/ts/SpliceInfoSectionReader.java | 62 + .../extractor/ts/TsBinarySearchSeeker.java | 140 + .../exoplayer2/extractor/ts/TsDurationReader.java | 197 ++ .../exoplayer2/extractor/ts/TsExtractor.java | 698 +++++ .../exoplayer2/extractor/ts/TsPayloadReader.java | 232 ++ .../android/exoplayer2/extractor/ts/TsUtil.java | 96 + .../exoplayer2/extractor/ts/UserDataReader.java | 81 + .../exoplayer2/extractor/wav/WavExtractor.java | 562 ++++ .../exoplayer2/extractor/wav/WavHeader.java | 55 + .../exoplayer2/extractor/wav/WavHeaderReader.java | 191 ++ .../exoplayer2/extractor/wav/WavSeekMap.java | 74 + .../exoplayer2/mediacodec/MediaCodecInfo.java | 617 +++++ .../exoplayer2/mediacodec/MediaCodecRenderer.java | 2014 ++++++++++++++ .../exoplayer2/mediacodec/MediaCodecSelector.java | 71 + .../exoplayer2/mediacodec/MediaCodecUtil.java | 1232 +++++++++ .../exoplayer2/mediacodec/MediaFormatUtil.java | 109 + .../exoplayer2/mediacodec/package-info.java | 19 + .../android/exoplayer2/metadata/Metadata.java | 171 ++ .../exoplayer2/metadata/MetadataDecoder.java | 33 + .../metadata/MetadataDecoderFactory.java | 94 + .../exoplayer2/metadata/MetadataInputBuffer.java | 36 + .../exoplayer2/metadata/MetadataOutput.java | 30 + .../exoplayer2/metadata/MetadataRenderer.java | 236 ++ .../exoplayer2/metadata/emsg/EventMessage.java | 202 ++ .../metadata/emsg/EventMessageDecoder.java | 47 + .../metadata/emsg/EventMessageEncoder.java | 73 + .../exoplayer2/metadata/emsg/package-info.java | 19 + .../exoplayer2/metadata/flac/PictureFrame.java | 144 + .../exoplayer2/metadata/flac/VorbisComment.java | 99 + .../exoplayer2/metadata/flac/package-info.java | 19 + .../exoplayer2/metadata/icy/IcyDecoder.java | 101 + .../exoplayer2/metadata/icy/IcyHeaders.java | 243 ++ .../android/exoplayer2/metadata/icy/IcyInfo.java | 107 + .../exoplayer2/metadata/icy/package-info.java | 19 + .../android/exoplayer2/metadata/id3/ApicFrame.java | 108 + .../exoplayer2/metadata/id3/BinaryFrame.java | 83 + .../exoplayer2/metadata/id3/ChapterFrame.java | 145 + .../exoplayer2/metadata/id3/ChapterTocFrame.java | 127 + .../exoplayer2/metadata/id3/CommentFrame.java | 101 + .../android/exoplayer2/metadata/id3/GeobFrame.java | 112 + .../exoplayer2/metadata/id3/Id3Decoder.java | 842 ++++++ .../android/exoplayer2/metadata/id3/Id3Frame.java | 44 + .../exoplayer2/metadata/id3/InternalFrame.java | 97 + .../android/exoplayer2/metadata/id3/MlltFrame.java | 114 + .../android/exoplayer2/metadata/id3/PrivFrame.java | 94 + .../metadata/id3/TextInformationFrame.java | 96 + .../exoplayer2/metadata/id3/UrlLinkFrame.java | 96 + .../exoplayer2/metadata/id3/package-info.java | 19 + .../android/exoplayer2/metadata/package-info.java | 19 + .../exoplayer2/metadata/scte35/PrivateCommand.java | 85 + .../exoplayer2/metadata/scte35/SpliceCommand.java | 37 + .../metadata/scte35/SpliceInfoDecoder.java | 102 + .../metadata/scte35/SpliceInsertCommand.java | 254 ++ .../metadata/scte35/SpliceNullCommand.java | 47 + .../metadata/scte35/SpliceScheduleCommand.java | 270 ++ .../metadata/scte35/TimeSignalCommand.java | 93 + .../exoplayer2/metadata/scte35/package-info.java | 19 + .../android/exoplayer2/offline/ActionFile.java | 164 ++ .../exoplayer2/offline/ActionFileUpgradeUtil.java | 120 + .../exoplayer2/offline/DefaultDownloadIndex.java | 452 ++++ .../offline/DefaultDownloaderFactory.java | 119 + .../android/exoplayer2/offline/Download.java | 164 ++ .../android/exoplayer2/offline/DownloadCursor.java | 129 + .../exoplayer2/offline/DownloadException.java | 33 + .../android/exoplayer2/offline/DownloadHelper.java | 1174 ++++++++ .../android/exoplayer2/offline/DownloadIndex.java | 49 + .../exoplayer2/offline/DownloadManager.java | 1346 ++++++++++ .../exoplayer2/offline/DownloadProgress.java | 28 + .../exoplayer2/offline/DownloadRequest.java | 212 ++ .../exoplayer2/offline/DownloadService.java | 1049 ++++++++ .../android/exoplayer2/offline/Downloader.java | 60 + .../offline/DownloaderConstructorHelper.java | 170 ++ .../exoplayer2/offline/DownloaderFactory.java | 28 + .../exoplayer2/offline/FilterableManifest.java | 36 + .../offline/FilteringManifestParser.java | 49 + .../exoplayer2/offline/ProgressiveDownloader.java | 120 + .../exoplayer2/offline/SegmentDownloader.java | 279 ++ .../android/exoplayer2/offline/StreamKey.java | 132 + .../exoplayer2/offline/WritableDownloadIndex.java | 87 + .../android/exoplayer2/offline/package-info.java | 19 + .../google/android/exoplayer2/package-info.java | 19 + .../exoplayer2/scheduler/PlatformScheduler.java | 150 ++ .../android/exoplayer2/scheduler/Requirements.java | 223 ++ .../exoplayer2/scheduler/RequirementsWatcher.java | 197 ++ .../android/exoplayer2/scheduler/Scheduler.java | 48 + .../android/exoplayer2/scheduler/package-info.java | 19 + .../source/AbstractConcatenatedTimeline.java | 327 +++ .../source/AdaptiveMediaSourceEventListener.java | 24 + .../android/exoplayer2/source/BaseMediaSource.java | 191 ++ .../source/BehindLiveWindowException.java | 29 + .../exoplayer2/source/ClippingMediaPeriod.java | 345 +++ .../exoplayer2/source/ClippingMediaSource.java | 375 +++ .../exoplayer2/source/CompositeMediaSource.java | 354 +++ .../source/CompositeSequenceableLoader.java | 95 + .../source/CompositeSequenceableLoaderFactory.java | 31 + .../source/ConcatenatingMediaSource.java | 1017 +++++++ .../DefaultCompositeSequenceableLoaderFactory.java | 29 + .../source/DefaultMediaSourceEventListener.java | 23 + .../exoplayer2/source/EmptySampleStream.java | 50 + .../exoplayer2/source/ExtractorMediaSource.java | 394 +++ .../exoplayer2/source/ForwardingTimeline.java | 83 + .../android/exoplayer2/source/IcyDataSource.java | 149 ++ .../exoplayer2/source/LoopingMediaSource.java | 214 ++ .../exoplayer2/source/MaskingMediaPeriod.java | 236 ++ .../exoplayer2/source/MaskingMediaSource.java | 353 +++ .../android/exoplayer2/source/MediaPeriod.java | 251 ++ .../android/exoplayer2/source/MediaSource.java | 325 +++ .../source/MediaSourceEventListener.java | 740 +++++ .../exoplayer2/source/MediaSourceFactory.java | 62 + .../exoplayer2/source/MergingMediaPeriod.java | 256 ++ .../exoplayer2/source/MergingMediaSource.java | 184 ++ .../exoplayer2/source/ProgressiveMediaPeriod.java | 1162 ++++++++ .../exoplayer2/source/ProgressiveMediaSource.java | 327 +++ .../android/exoplayer2/source/SampleDataQueue.java | 472 ++++ .../android/exoplayer2/source/SampleQueue.java | 926 +++++++ .../android/exoplayer2/source/SampleStream.java | 79 + .../exoplayer2/source/SequenceableLoader.java | 77 + .../android/exoplayer2/source/ShuffleOrder.java | 283 ++ .../exoplayer2/source/SilenceMediaSource.java | 253 ++ .../exoplayer2/source/SinglePeriodTimeline.java | 227 ++ .../exoplayer2/source/SingleSampleMediaPeriod.java | 423 +++ .../exoplayer2/source/SingleSampleMediaSource.java | 371 +++ .../android/exoplayer2/source/TrackGroup.java | 142 + .../android/exoplayer2/source/TrackGroupArray.java | 141 + .../source/UnrecognizedInputFormatException.java | 40 + .../exoplayer2/source/ads/AdPlaybackState.java | 486 ++++ .../android/exoplayer2/source/ads/AdsLoader.java | 150 ++ .../exoplayer2/source/ads/AdsMediaSource.java | 439 +++ .../source/ads/SinglePeriodAdTimeline.java | 66 + .../exoplayer2/source/chunk/BaseMediaChunk.java | 100 + .../source/chunk/BaseMediaChunkIterator.java | 75 + .../source/chunk/BaseMediaChunkOutput.java | 80 + .../android/exoplayer2/source/chunk/Chunk.java | 137 + .../source/chunk/ChunkExtractorWrapper.java | 220 ++ .../exoplayer2/source/chunk/ChunkHolder.java | 41 + .../exoplayer2/source/chunk/ChunkSampleStream.java | 791 ++++++ .../exoplayer2/source/chunk/ChunkSource.java | 111 + .../source/chunk/ContainerMediaChunk.java | 157 ++ .../android/exoplayer2/source/chunk/DataChunk.java | 119 + .../source/chunk/InitializationChunk.java | 112 + .../exoplayer2/source/chunk/MediaChunk.java | 68 + .../source/chunk/MediaChunkIterator.java | 104 + .../source/chunk/MediaChunkListIterator.java | 61 + .../source/chunk/SingleSampleMediaChunk.java | 120 + .../exoplayer2/source/hls/Aes128DataSource.java | 129 + .../source/hls/DefaultHlsDataSourceFactory.java | 39 + .../source/hls/DefaultHlsExtractorFactory.java | 338 +++ .../source/hls/FullSegmentEncryptionKeyCache.java | 85 + .../exoplayer2/source/hls/HlsChunkSource.java | 668 +++++ .../source/hls/HlsDataSourceFactory.java | 35 + .../exoplayer2/source/hls/HlsExtractorFactory.java | 92 + .../android/exoplayer2/source/hls/HlsManifest.java | 44 + .../exoplayer2/source/hls/HlsMediaChunk.java | 519 ++++ .../exoplayer2/source/hls/HlsMediaPeriod.java | 858 ++++++ .../exoplayer2/source/hls/HlsMediaSource.java | 528 ++++ .../exoplayer2/source/hls/HlsSampleStream.java | 97 + .../source/hls/HlsSampleStreamWrapper.java | 1535 +++++++++++ .../source/hls/HlsTrackMetadataEntry.java | 245 ++ .../source/hls/SampleQueueMappingException.java | 30 + .../source/hls/TimestampAdjusterProvider.java | 57 + .../exoplayer2/source/hls/WebvttExtractor.java | 195 ++ .../source/hls/offline/HlsDownloader.java | 148 + .../source/hls/offline/package-info.java | 19 + .../exoplayer2/source/hls/package-info.java | 19 + .../playlist/DefaultHlsPlaylistParserFactory.java | 33 + .../hls/playlist/DefaultHlsPlaylistTracker.java | 678 +++++ .../FilteringHlsPlaylistParserFactory.java | 55 + .../source/hls/playlist/HlsMasterPlaylist.java | 330 +++ .../source/hls/playlist/HlsMediaPlaylist.java | 375 +++ .../source/hls/playlist/HlsPlaylist.java | 50 + .../source/hls/playlist/HlsPlaylistParser.java | 1007 +++++++ .../hls/playlist/HlsPlaylistParserFactory.java | 38 + .../source/hls/playlist/HlsPlaylistTracker.java | 226 ++ .../source/hls/playlist/package-info.java | 19 + .../exoplayer2/text/CaptionStyleCompat.java | 184 ++ .../com/google/android/exoplayer2/text/Cue.java | 435 +++ .../exoplayer2/text/SimpleSubtitleDecoder.java | 100 + .../text/SimpleSubtitleOutputBuffer.java | 38 + .../google/android/exoplayer2/text/Subtitle.java | 59 + .../android/exoplayer2/text/SubtitleDecoder.java | 35 + .../exoplayer2/text/SubtitleDecoderException.java | 43 + .../exoplayer2/text/SubtitleDecoderFactory.java | 126 + .../exoplayer2/text/SubtitleInputBuffer.java | 34 + .../exoplayer2/text/SubtitleOutputBuffer.java | 77 + .../google/android/exoplayer2/text/TextOutput.java | 31 + .../android/exoplayer2/text/TextRenderer.java | 350 +++ .../android/exoplayer2/text/cea/Cea608Decoder.java | 1014 +++++++ .../android/exoplayer2/text/cea/Cea708Cue.java | 62 + .../android/exoplayer2/text/cea/Cea708Decoder.java | 1255 +++++++++ .../text/cea/Cea708InitializationData.java | 54 + .../android/exoplayer2/text/cea/CeaDecoder.java | 204 ++ .../android/exoplayer2/text/cea/CeaSubtitle.java | 60 + .../android/exoplayer2/text/cea/CeaUtil.java | 138 + .../android/exoplayer2/text/cea/package-info.java | 19 + .../android/exoplayer2/text/dvb/DvbDecoder.java | 49 + .../android/exoplayer2/text/dvb/DvbParser.java | 1059 ++++++++ .../android/exoplayer2/text/dvb/DvbSubtitle.java | 54 + .../android/exoplayer2/text/dvb/package-info.java | 19 + .../android/exoplayer2/text/package-info.java | 19 + .../android/exoplayer2/text/pgs/PgsDecoder.java | 259 ++ .../android/exoplayer2/text/pgs/PgsSubtitle.java | 51 + .../android/exoplayer2/text/pgs/package-info.java | 19 + .../android/exoplayer2/text/ssa/SsaDecoder.java | 446 +++ .../exoplayer2/text/ssa/SsaDialogueFormat.java | 83 + .../android/exoplayer2/text/ssa/SsaStyle.java | 301 +++ .../android/exoplayer2/text/ssa/SsaSubtitle.java | 71 + .../android/exoplayer2/text/ssa/package-info.java | 19 + .../exoplayer2/text/subrip/SubripDecoder.java | 259 ++ .../exoplayer2/text/subrip/SubripSubtitle.java | 72 + .../exoplayer2/text/subrip/package-info.java | 19 + .../android/exoplayer2/text/ttml/TtmlDecoder.java | 756 ++++++ .../android/exoplayer2/text/ttml/TtmlNode.java | 399 +++ .../android/exoplayer2/text/ttml/TtmlRegion.java | 69 + .../exoplayer2/text/ttml/TtmlRenderUtil.java | 151 ++ .../android/exoplayer2/text/ttml/TtmlStyle.java | 268 ++ .../android/exoplayer2/text/ttml/TtmlSubtitle.java | 81 + .../android/exoplayer2/text/ttml/package-info.java | 19 + .../android/exoplayer2/text/tx3g/Tx3gDecoder.java | 241 ++ .../android/exoplayer2/text/tx3g/Tx3gSubtitle.java | 63 + .../android/exoplayer2/text/tx3g/package-info.java | 19 + .../android/exoplayer2/text/webvtt/CssParser.java | 347 +++ .../exoplayer2/text/webvtt/Mp4WebvttDecoder.java | 101 + .../exoplayer2/text/webvtt/Mp4WebvttSubtitle.java | 56 + .../exoplayer2/text/webvtt/WebvttCssStyle.java | 329 +++ .../android/exoplayer2/text/webvtt/WebvttCue.java | 319 +++ .../exoplayer2/text/webvtt/WebvttCueParser.java | 550 ++++ .../exoplayer2/text/webvtt/WebvttDecoder.java | 125 + .../exoplayer2/text/webvtt/WebvttParserUtil.java | 119 + .../exoplayer2/text/webvtt/WebvttSubtitle.java | 115 + .../exoplayer2/text/webvtt/package-info.java | 20 + .../trackselection/AdaptiveTrackSelection.java | 761 ++++++ .../trackselection/BaseTrackSelection.java | 217 ++ .../BufferSizeAdaptationBuilder.java | 494 ++++ .../trackselection/DefaultTrackSelector.java | 2827 ++++++++++++++++++++ .../trackselection/FixedTrackSelection.java | 117 + .../trackselection/MappingTrackSelector.java | 541 ++++ .../trackselection/RandomTrackSelection.java | 143 + .../exoplayer2/trackselection/TrackSelection.java | 269 ++ .../trackselection/TrackSelectionArray.java | 77 + .../trackselection/TrackSelectionParameters.java | 336 +++ .../trackselection/TrackSelectionUtil.java | 100 + .../exoplayer2/trackselection/TrackSelector.java | 157 ++ .../trackselection/TrackSelectorResult.java | 105 + .../exoplayer2/trackselection/package-info.java | 19 + .../android/exoplayer2/upstream/Allocation.java | 46 + .../android/exoplayer2/upstream/Allocator.java | 63 + .../exoplayer2/upstream/AssetDataSource.java | 150 ++ .../exoplayer2/upstream/BandwidthMeter.java | 71 + .../exoplayer2/upstream/BaseDataSource.java | 102 + .../exoplayer2/upstream/ByteArrayDataSink.java | 63 + .../exoplayer2/upstream/ByteArrayDataSource.java | 91 + .../exoplayer2/upstream/ContentDataSource.java | 173 ++ .../exoplayer2/upstream/DataSchemeDataSource.java | 110 + .../android/exoplayer2/upstream/DataSink.java | 67 + .../android/exoplayer2/upstream/DataSource.java | 111 + .../exoplayer2/upstream/DataSourceException.java | 41 + .../exoplayer2/upstream/DataSourceInputStream.java | 107 + .../android/exoplayer2/upstream/DataSpec.java | 478 ++++ .../exoplayer2/upstream/DefaultAllocator.java | 179 ++ .../exoplayer2/upstream/DefaultBandwidthMeter.java | 731 +++++ .../exoplayer2/upstream/DefaultDataSource.java | 289 ++ .../upstream/DefaultDataSourceFactory.java | 85 + .../exoplayer2/upstream/DefaultHttpDataSource.java | 798 ++++++ .../upstream/DefaultHttpDataSourceFactory.java | 119 + .../upstream/DefaultLoadErrorHandlingPolicy.java | 110 + .../exoplayer2/upstream/DummyDataSource.java | 59 + .../exoplayer2/upstream/FileDataSource.java | 171 ++ .../exoplayer2/upstream/FileDataSourceFactory.java | 38 + .../exoplayer2/upstream/HttpDataSource.java | 379 +++ .../upstream/LoadErrorHandlingPolicy.java | 87 + .../google/android/exoplayer2/upstream/Loader.java | 521 ++++ .../exoplayer2/upstream/LoaderErrorThrower.java | 63 + .../exoplayer2/upstream/ParsingLoadable.java | 177 ++ .../exoplayer2/upstream/PriorityDataSource.java | 89 + .../upstream/PriorityDataSourceFactory.java | 49 + .../exoplayer2/upstream/RawResourceDataSource.java | 199 ++ .../exoplayer2/upstream/ResolvingDataSource.java | 132 + .../exoplayer2/upstream/StatsDataSource.java | 113 + .../android/exoplayer2/upstream/TeeDataSource.java | 105 + .../exoplayer2/upstream/TransferListener.java | 77 + .../android/exoplayer2/upstream/UdpDataSource.java | 176 ++ .../android/exoplayer2/upstream/cache/Cache.java | 286 ++ .../exoplayer2/upstream/cache/CacheDataSink.java | 210 ++ .../upstream/cache/CacheDataSinkFactory.java | 45 + .../exoplayer2/upstream/cache/CacheDataSource.java | 580 ++++ .../upstream/cache/CacheDataSourceFactory.java | 112 + .../exoplayer2/upstream/cache/CacheEvictor.java | 47 + .../upstream/cache/CacheFileMetadata.java | 28 + .../upstream/cache/CacheFileMetadataIndex.java | 252 ++ .../exoplayer2/upstream/cache/CacheKeyFactory.java | 29 + .../exoplayer2/upstream/cache/CacheSpan.java | 106 + .../exoplayer2/upstream/cache/CacheUtil.java | 434 +++ .../exoplayer2/upstream/cache/CachedContent.java | 208 ++ .../upstream/cache/CachedContentIndex.java | 956 +++++++ .../upstream/cache/CachedRegionTracker.java | 204 ++ .../exoplayer2/upstream/cache/ContentMetadata.java | 87 + .../upstream/cache/ContentMetadataMutations.java | 145 + .../upstream/cache/DefaultContentMetadata.java | 173 ++ .../cache/LeastRecentlyUsedCacheEvictor.java | 89 + .../upstream/cache/NoOpCacheEvictor.java | 57 + .../exoplayer2/upstream/cache/SimpleCache.java | 812 ++++++ .../exoplayer2/upstream/cache/SimpleCacheSpan.java | 217 ++ .../upstream/crypto/AesCipherDataSink.java | 99 + .../upstream/crypto/AesCipherDataSource.java | 89 + .../upstream/crypto/AesFlushingCipher.java | 123 + .../exoplayer2/upstream/crypto/CryptoUtil.java | 46 + .../google/android/exoplayer2/util/Assertions.java | 217 ++ .../google/android/exoplayer2/util/AtomicFile.java | 201 ++ .../com/google/android/exoplayer2/util/Clock.java | 49 + .../exoplayer2/util/CodecSpecificDataUtil.java | 384 +++ .../android/exoplayer2/util/ColorParser.java | 277 ++ .../android/exoplayer2/util/ConditionVariable.java | 83 + .../android/exoplayer2/util/EGLSurfaceTexture.java | 312 +++ .../exoplayer2/util/ErrorMessageProvider.java | 31 + .../android/exoplayer2/util/EventDispatcher.java | 100 + .../android/exoplayer2/util/EventLogger.java | 651 +++++ .../android/exoplayer2/util/FlacConstants.java | 42 + .../exoplayer2/util/FlacStreamMetadata.java | 384 +++ .../com/google/android/exoplayer2/util/GlUtil.java | 404 +++ .../android/exoplayer2/util/HandlerWrapper.java | 61 + .../android/exoplayer2/util/LibraryLoader.java | 68 + .../com/google/android/exoplayer2/util/Log.java | 177 ++ .../google/android/exoplayer2/util/LongArray.java | 84 + .../google/android/exoplayer2/util/MediaClock.java | 43 + .../google/android/exoplayer2/util/MimeTypes.java | 465 ++++ .../android/exoplayer2/util/NalUnitUtil.java | 519 ++++ .../google/android/exoplayer2/util/NonNullApi.java | 34 + .../android/exoplayer2/util/NotificationUtil.java | 134 + .../android/exoplayer2/util/ParsableBitArray.java | 323 +++ .../android/exoplayer2/util/ParsableByteArray.java | 586 ++++ .../exoplayer2/util/ParsableNalUnitBitArray.java | 211 ++ .../google/android/exoplayer2/util/Predicate.java | 33 + .../exoplayer2/util/PriorityTaskManager.java | 119 + .../android/exoplayer2/util/RepeatModeUtil.java | 95 + .../util/ReusableBufferedOutputStream.java | 73 + .../android/exoplayer2/util/SlidingPercentile.java | 158 ++ .../exoplayer2/util/StandaloneMediaClock.java | 104 + .../android/exoplayer2/util/SystemClock.java | 47 + .../exoplayer2/util/SystemHandlerWrapper.java | 85 + .../android/exoplayer2/util/TimedValueQueue.java | 161 ++ .../android/exoplayer2/util/TimestampAdjuster.java | 186 ++ .../google/android/exoplayer2/util/TraceUtil.java | 62 + .../google/android/exoplayer2/util/UriUtil.java | 279 ++ .../com/google/android/exoplayer2/util/Util.java | 2298 ++++++++++++++++ .../android/exoplayer2/util/XmlPullParserUtil.java | 131 + .../android/exoplayer2/util/package-info.java | 17 + .../google/android/exoplayer2/video/AvcConfig.java | 97 + .../google/android/exoplayer2/video/ColorInfo.java | 150 ++ .../exoplayer2/video/DolbyVisionConfig.java | 64 + .../android/exoplayer2/video/DummySurface.java | 228 ++ .../android/exoplayer2/video/HevcConfig.java | 91 + .../exoplayer2/video/MediaCodecVideoRenderer.java | 1873 +++++++++++++ .../video/SimpleDecoderVideoRenderer.java | 975 +++++++ .../exoplayer2/video/VideoDecoderException.java | 40 + .../video/VideoDecoderGLSurfaceView.java | 57 + .../exoplayer2/video/VideoDecoderInputBuffer.java | 30 + .../exoplayer2/video/VideoDecoderOutputBuffer.java | 185 ++ .../video/VideoDecoderOutputBufferRenderer.java | 27 + .../exoplayer2/video/VideoDecoderRenderer.java | 241 ++ .../video/VideoFrameMetadataListener.java | 40 + .../video/VideoFrameReleaseTimeHelper.java | 361 +++ .../android/exoplayer2/video/VideoListener.java | 58 + .../video/VideoRendererEventListener.java | 198 ++ .../android/exoplayer2/video/package-info.java | 19 + .../video/spherical/CameraMotionListener.java | 32 + .../video/spherical/CameraMotionRenderer.java | 134 + .../video/spherical/FrameRotationQueue.java | 124 + .../exoplayer2/video/spherical/Projection.java | 236 ++ .../video/spherical/ProjectionDecoder.java | 238 ++ .../exoplayer2/video/spherical/package-info.java | 19 + 575 files changed, 144306 insertions(+) create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/AudioBecomingNoisyManager.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/AudioFocusManager.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BasePlayer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BaseRenderer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/C.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ControlDispatcher.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultControlDispatcher.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultLoadControl.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultMediaClock.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultRenderersFactory.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlaybackException.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerFactory.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerImpl.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerImplInternal.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerLibraryInfo.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Format.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/FormatHolder.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/IllegalSeekPositionException.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/LoadControl.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodHolder.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodInfo.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodQueue.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/NoSampleRenderer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ParserException.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackInfo.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackParameters.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackPreparer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Player.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlayerMessage.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Renderer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RendererCapabilities.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RendererConfiguration.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RenderersFactory.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/SeekParameters.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/SimpleExoPlayer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Timeline.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/WakeLockManager.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/WifiLockManager.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/AnalyticsCollector.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/AnalyticsListener.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/DefaultAnalyticsListener.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/DefaultPlaybackSessionManager.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackSessionManager.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackStats.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackStatsListener.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/package-info.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Ac3Util.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Ac4Util.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioAttributes.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioCapabilities.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioCapabilitiesReceiver.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioDecoderException.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioListener.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioProcessor.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioRendererEventListener.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioSink.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioTimestampPoller.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioTrackPositionTracker.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AuxEffectInfo.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/BaseAudioProcessor.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ChannelMappingAudioProcessor.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/DefaultAudioSink.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/DtsUtil.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/FloatResamplingAudioProcessor.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ForwardingAudioSink.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/MediaCodecAudioRenderer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ResamplingAudioProcessor.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SilenceSkippingAudioProcessor.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SimpleDecoderAudioRenderer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Sonic.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SonicAudioProcessor.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/TeeAudioProcessor.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/TrimmingAudioProcessor.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/WavUtil.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/package-info.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DatabaseIOException.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DatabaseProvider.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DefaultDatabaseProvider.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/ExoDatabaseProvider.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/VersionTable.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/package-info.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/Buffer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/CryptoInfo.java create mode 100644 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mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/DolbyVisionConfig.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/DummySurface.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/HevcConfig.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/MediaCodecVideoRenderer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/SimpleDecoderVideoRenderer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderException.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderGLSurfaceView.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderInputBuffer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBuffer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBufferRenderer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderRenderer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoFrameMetadataListener.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoFrameReleaseTimeHelper.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoListener.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoRendererEventListener.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/package-info.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/CameraMotionListener.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/CameraMotionRenderer.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/FrameRotationQueue.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/Projection.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/ProjectionDecoder.java create mode 100644 mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/package-info.java (limited to 'mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com') diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/AudioBecomingNoisyManager.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/AudioBecomingNoisyManager.java new file mode 100644 index 0000000000..c833c448e4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/AudioBecomingNoisyManager.java @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.content.BroadcastReceiver; +import android.content.Context; +import android.content.Intent; +import android.content.IntentFilter; +import android.media.AudioManager; +import android.os.Handler; + +/* package */ final class AudioBecomingNoisyManager { + + private final Context context; + private final AudioBecomingNoisyReceiver receiver; + private boolean receiverRegistered; + + public interface EventListener { + void onAudioBecomingNoisy(); + } + + public AudioBecomingNoisyManager(Context context, Handler eventHandler, EventListener listener) { + this.context = context.getApplicationContext(); + this.receiver = new AudioBecomingNoisyReceiver(eventHandler, listener); + } + + /** + * Enables the {@link AudioBecomingNoisyManager} which calls {@link + * EventListener#onAudioBecomingNoisy()} upon receiving an intent of {@link + * AudioManager#ACTION_AUDIO_BECOMING_NOISY}. + * + * @param enabled True if the listener should be notified when audio is becoming noisy. + */ + public void setEnabled(boolean enabled) { + if (enabled && !receiverRegistered) { + context.registerReceiver( + receiver, new IntentFilter(AudioManager.ACTION_AUDIO_BECOMING_NOISY)); + receiverRegistered = true; + } else if (!enabled && receiverRegistered) { + context.unregisterReceiver(receiver); + receiverRegistered = false; + } + } + + private final class AudioBecomingNoisyReceiver extends BroadcastReceiver implements Runnable { + private final EventListener listener; + private final Handler eventHandler; + + public AudioBecomingNoisyReceiver(Handler eventHandler, EventListener listener) { + this.eventHandler = eventHandler; + this.listener = listener; + } + + @Override + public void onReceive(Context context, Intent intent) { + if (AudioManager.ACTION_AUDIO_BECOMING_NOISY.equals(intent.getAction())) { + eventHandler.post(this); + } + } + + @Override + public void run() { + if (receiverRegistered) { + listener.onAudioBecomingNoisy(); + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/AudioFocusManager.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/AudioFocusManager.java new file mode 100644 index 0000000000..5806f57a08 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/AudioFocusManager.java @@ -0,0 +1,397 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.content.Context; +import android.media.AudioFocusRequest; +import android.media.AudioManager; +import android.os.Handler; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import androidx.annotation.RequiresApi; +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** Manages requesting and responding to changes in audio focus. */ +/* package */ final class AudioFocusManager { + + /** Interface to allow AudioFocusManager to give commands to a player. */ + public interface PlayerControl { + /** + * Called when the volume multiplier on the player should be changed. + * + * @param volumeMultiplier The new volume multiplier. + */ + void setVolumeMultiplier(float volumeMultiplier); + + /** + * Called when a command must be executed on the player. + * + * @param playerCommand The command that must be executed. + */ + void executePlayerCommand(@PlayerCommand int playerCommand); + } + + /** + * Player commands. One of {@link #PLAYER_COMMAND_DO_NOT_PLAY}, {@link + * #PLAYER_COMMAND_WAIT_FOR_CALLBACK} or {@link #PLAYER_COMMAND_PLAY_WHEN_READY}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + PLAYER_COMMAND_DO_NOT_PLAY, + PLAYER_COMMAND_WAIT_FOR_CALLBACK, + PLAYER_COMMAND_PLAY_WHEN_READY, + }) + public @interface PlayerCommand {} + /** Do not play. */ + public static final int PLAYER_COMMAND_DO_NOT_PLAY = -1; + /** Do not play now. Wait for callback to play. */ + public static final int PLAYER_COMMAND_WAIT_FOR_CALLBACK = 0; + /** Play freely. */ + public static final int PLAYER_COMMAND_PLAY_WHEN_READY = 1; + + /** Audio focus state. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + AUDIO_FOCUS_STATE_NO_FOCUS, + AUDIO_FOCUS_STATE_HAVE_FOCUS, + AUDIO_FOCUS_STATE_LOSS_TRANSIENT, + AUDIO_FOCUS_STATE_LOSS_TRANSIENT_DUCK + }) + private @interface AudioFocusState {} + /** No audio focus is currently being held. */ + private static final int AUDIO_FOCUS_STATE_NO_FOCUS = 0; + /** The requested audio focus is currently held. */ + private static final int AUDIO_FOCUS_STATE_HAVE_FOCUS = 1; + /** Audio focus has been temporarily lost. */ + private static final int AUDIO_FOCUS_STATE_LOSS_TRANSIENT = 2; + /** Audio focus has been temporarily lost, but playback may continue with reduced volume. */ + private static final int AUDIO_FOCUS_STATE_LOSS_TRANSIENT_DUCK = 3; + + private static final String TAG = "AudioFocusManager"; + + private static final float VOLUME_MULTIPLIER_DUCK = 0.2f; + private static final float VOLUME_MULTIPLIER_DEFAULT = 1.0f; + + private final AudioManager audioManager; + private final AudioFocusListener focusListener; + @Nullable private PlayerControl playerControl; + @Nullable private AudioAttributes audioAttributes; + + @AudioFocusState private int audioFocusState; + @C.AudioFocusGain private int focusGain; + private float volumeMultiplier = VOLUME_MULTIPLIER_DEFAULT; + + private @MonotonicNonNull AudioFocusRequest audioFocusRequest; + private boolean rebuildAudioFocusRequest; + + /** + * Constructs an AudioFocusManager to automatically handle audio focus for a player. + * + * @param context The current context. + * @param eventHandler A {@link Handler} to for the thread on which the player is used. + * @param playerControl A {@link PlayerControl} to handle commands from this instance. + */ + public AudioFocusManager(Context context, Handler eventHandler, PlayerControl playerControl) { + this.audioManager = + (AudioManager) context.getApplicationContext().getSystemService(Context.AUDIO_SERVICE); + this.playerControl = playerControl; + this.focusListener = new AudioFocusListener(eventHandler); + this.audioFocusState = AUDIO_FOCUS_STATE_NO_FOCUS; + } + + /** Gets the current player volume multiplier. */ + public float getVolumeMultiplier() { + return volumeMultiplier; + } + + /** + * Sets audio attributes that should be used to manage audio focus. + * + *

Call {@link #updateAudioFocus(boolean, int)} to update the audio focus based on these + * attributes. + * + * @param audioAttributes The audio attributes or {@code null} if audio focus should not be + * managed automatically. + */ + public void setAudioAttributes(@Nullable AudioAttributes audioAttributes) { + if (!Util.areEqual(this.audioAttributes, audioAttributes)) { + this.audioAttributes = audioAttributes; + focusGain = convertAudioAttributesToFocusGain(audioAttributes); + Assertions.checkArgument( + focusGain == C.AUDIOFOCUS_GAIN || focusGain == C.AUDIOFOCUS_NONE, + "Automatic handling of audio focus is only available for USAGE_MEDIA and USAGE_GAME."); + } + } + + /** + * Called by the player to abandon or request audio focus based on the desired player state. + * + * @param playWhenReady The desired value of playWhenReady. + * @param playbackState The desired playback state. + * @return A {@link PlayerCommand} to execute on the player. + */ + @PlayerCommand + public int updateAudioFocus(boolean playWhenReady, @Player.State int playbackState) { + if (shouldAbandonAudioFocus(playbackState)) { + abandonAudioFocus(); + return playWhenReady ? PLAYER_COMMAND_PLAY_WHEN_READY : PLAYER_COMMAND_DO_NOT_PLAY; + } + return playWhenReady ? requestAudioFocus() : PLAYER_COMMAND_DO_NOT_PLAY; + } + + /** + * Called when the manager is no longer required. Audio focus will be released without making any + * calls to the {@link PlayerControl}. + */ + public void release() { + playerControl = null; + abandonAudioFocus(); + } + + // Internal methods. + + @VisibleForTesting + /* package */ AudioManager.OnAudioFocusChangeListener getFocusListener() { + return focusListener; + } + + private boolean shouldAbandonAudioFocus(@Player.State int playbackState) { + return playbackState == Player.STATE_IDLE || focusGain != C.AUDIOFOCUS_GAIN; + } + + @PlayerCommand + private int requestAudioFocus() { + if (audioFocusState == AUDIO_FOCUS_STATE_HAVE_FOCUS) { + return PLAYER_COMMAND_PLAY_WHEN_READY; + } + int requestResult = Util.SDK_INT >= 26 ? requestAudioFocusV26() : requestAudioFocusDefault(); + if (requestResult == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) { + setAudioFocusState(AUDIO_FOCUS_STATE_HAVE_FOCUS); + return PLAYER_COMMAND_PLAY_WHEN_READY; + } else { + setAudioFocusState(AUDIO_FOCUS_STATE_NO_FOCUS); + return PLAYER_COMMAND_DO_NOT_PLAY; + } + } + + private void abandonAudioFocus() { + if (audioFocusState == AUDIO_FOCUS_STATE_NO_FOCUS) { + return; + } + if (Util.SDK_INT >= 26) { + abandonAudioFocusV26(); + } else { + abandonAudioFocusDefault(); + } + setAudioFocusState(AUDIO_FOCUS_STATE_NO_FOCUS); + } + + private int requestAudioFocusDefault() { + return audioManager.requestAudioFocus( + focusListener, + Util.getStreamTypeForAudioUsage(Assertions.checkNotNull(audioAttributes).usage), + focusGain); + } + + @RequiresApi(26) + private int requestAudioFocusV26() { + if (audioFocusRequest == null || rebuildAudioFocusRequest) { + AudioFocusRequest.Builder builder = + audioFocusRequest == null + ? new AudioFocusRequest.Builder(focusGain) + : new AudioFocusRequest.Builder(audioFocusRequest); + + boolean willPauseWhenDucked = willPauseWhenDucked(); + audioFocusRequest = + builder + .setAudioAttributes(Assertions.checkNotNull(audioAttributes).getAudioAttributesV21()) + .setWillPauseWhenDucked(willPauseWhenDucked) + .setOnAudioFocusChangeListener(focusListener) + .build(); + + rebuildAudioFocusRequest = false; + } + return audioManager.requestAudioFocus(audioFocusRequest); + } + + private void abandonAudioFocusDefault() { + audioManager.abandonAudioFocus(focusListener); + } + + @RequiresApi(26) + private void abandonAudioFocusV26() { + if (audioFocusRequest != null) { + audioManager.abandonAudioFocusRequest(audioFocusRequest); + } + } + + private boolean willPauseWhenDucked() { + return audioAttributes != null && audioAttributes.contentType == C.CONTENT_TYPE_SPEECH; + } + + /** + * Converts {@link AudioAttributes} to one of the audio focus request. + * + *

This follows the class Javadoc of {@link AudioFocusRequest}. + * + * @param audioAttributes The audio attributes associated with this focus request. + * @return The type of audio focus gain that should be requested. + */ + @C.AudioFocusGain + private static int convertAudioAttributesToFocusGain(@Nullable AudioAttributes audioAttributes) { + if (audioAttributes == null) { + // Don't handle audio focus. It may be either video only contents or developers + // want to have more finer grained control. (e.g. adding audio focus listener) + return C.AUDIOFOCUS_NONE; + } + + switch (audioAttributes.usage) { + // USAGE_VOICE_COMMUNICATION_SIGNALLING is for DTMF that may happen multiple times + // during the phone call when AUDIOFOCUS_GAIN_TRANSIENT is requested for that. + // Don't request audio focus here. + case C.USAGE_VOICE_COMMUNICATION_SIGNALLING: + return C.AUDIOFOCUS_NONE; + + // Javadoc says 'AUDIOFOCUS_GAIN: Examples of uses of this focus gain are for music + // playback, for a game or a video player' + case C.USAGE_GAME: + case C.USAGE_MEDIA: + return C.AUDIOFOCUS_GAIN; + + // Special usages: USAGE_UNKNOWN shouldn't be used. Request audio focus to prevent + // multiple media playback happen at the same time. + case C.USAGE_UNKNOWN: + Log.w( + TAG, + "Specify a proper usage in the audio attributes for audio focus" + + " handling. Using AUDIOFOCUS_GAIN by default."); + return C.AUDIOFOCUS_GAIN; + + // Javadoc says 'AUDIOFOCUS_GAIN_TRANSIENT: An example is for playing an alarm, or + // during a VoIP call' + case C.USAGE_ALARM: + case C.USAGE_VOICE_COMMUNICATION: + return C.AUDIOFOCUS_GAIN_TRANSIENT; + + // Javadoc says 'AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK: Examples are when playing + // driving directions or notifications' + case C.USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: + case C.USAGE_ASSISTANCE_SONIFICATION: + case C.USAGE_NOTIFICATION: + case C.USAGE_NOTIFICATION_COMMUNICATION_DELAYED: + case C.USAGE_NOTIFICATION_COMMUNICATION_INSTANT: + case C.USAGE_NOTIFICATION_COMMUNICATION_REQUEST: + case C.USAGE_NOTIFICATION_EVENT: + case C.USAGE_NOTIFICATION_RINGTONE: + return C.AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK; + + // Javadoc says 'AUDIOFOCUS_GAIN_EXCLUSIVE: This is typically used if you are doing + // audio recording or speech recognition'. + // Assistant is considered as both recording and notifying developer + case C.USAGE_ASSISTANT: + if (Util.SDK_INT >= 19) { + return C.AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE; + } else { + return C.AUDIOFOCUS_GAIN_TRANSIENT; + } + + // Special usages: + case C.USAGE_ASSISTANCE_ACCESSIBILITY: + if (audioAttributes.contentType == C.CONTENT_TYPE_SPEECH) { + // Voice shouldn't be interrupted by other playback. + return C.AUDIOFOCUS_GAIN_TRANSIENT; + } + return C.AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK; + default: + Log.w(TAG, "Unidentified audio usage: " + audioAttributes.usage); + return C.AUDIOFOCUS_NONE; + } + } + + private void setAudioFocusState(@AudioFocusState int audioFocusState) { + if (this.audioFocusState == audioFocusState) { + return; + } + this.audioFocusState = audioFocusState; + + float volumeMultiplier = + (audioFocusState == AUDIO_FOCUS_STATE_LOSS_TRANSIENT_DUCK) + ? AudioFocusManager.VOLUME_MULTIPLIER_DUCK + : AudioFocusManager.VOLUME_MULTIPLIER_DEFAULT; + if (this.volumeMultiplier == volumeMultiplier) { + return; + } + this.volumeMultiplier = volumeMultiplier; + if (playerControl != null) { + playerControl.setVolumeMultiplier(volumeMultiplier); + } + } + + private void handlePlatformAudioFocusChange(int focusChange) { + switch (focusChange) { + case AudioManager.AUDIOFOCUS_GAIN: + setAudioFocusState(AUDIO_FOCUS_STATE_HAVE_FOCUS); + executePlayerCommand(PLAYER_COMMAND_PLAY_WHEN_READY); + return; + case AudioManager.AUDIOFOCUS_LOSS: + executePlayerCommand(PLAYER_COMMAND_DO_NOT_PLAY); + abandonAudioFocus(); + return; + case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT: + case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK: + if (focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT || willPauseWhenDucked()) { + executePlayerCommand(PLAYER_COMMAND_WAIT_FOR_CALLBACK); + setAudioFocusState(AUDIO_FOCUS_STATE_LOSS_TRANSIENT); + } else { + setAudioFocusState(AUDIO_FOCUS_STATE_LOSS_TRANSIENT_DUCK); + } + return; + default: + Log.w(TAG, "Unknown focus change type: " + focusChange); + } + } + + private void executePlayerCommand(@PlayerCommand int playerCommand) { + if (playerControl != null) { + playerControl.executePlayerCommand(playerCommand); + } + } + + // Internal audio focus listener. + + private class AudioFocusListener implements AudioManager.OnAudioFocusChangeListener { + private final Handler eventHandler; + + public AudioFocusListener(Handler eventHandler) { + this.eventHandler = eventHandler; + } + + @Override + public void onAudioFocusChange(int focusChange) { + eventHandler.post(() -> handlePlatformAudioFocusChange(focusChange)); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BasePlayer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BasePlayer.java new file mode 100644 index 0000000000..c06361e69b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BasePlayer.java @@ -0,0 +1,209 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** Abstract base {@link Player} which implements common implementation independent methods. */ +public abstract class BasePlayer implements Player { + + protected final Timeline.Window window; + + public BasePlayer() { + window = new Timeline.Window(); + } + + @Override + public final boolean isPlaying() { + return getPlaybackState() == Player.STATE_READY + && getPlayWhenReady() + && getPlaybackSuppressionReason() == PLAYBACK_SUPPRESSION_REASON_NONE; + } + + @Override + public final void seekToDefaultPosition() { + seekToDefaultPosition(getCurrentWindowIndex()); + } + + @Override + public final void seekToDefaultPosition(int windowIndex) { + seekTo(windowIndex, /* positionMs= */ C.TIME_UNSET); + } + + @Override + public final void seekTo(long positionMs) { + seekTo(getCurrentWindowIndex(), positionMs); + } + + @Override + public final boolean hasPrevious() { + return getPreviousWindowIndex() != C.INDEX_UNSET; + } + + @Override + public final void previous() { + int previousWindowIndex = getPreviousWindowIndex(); + if (previousWindowIndex != C.INDEX_UNSET) { + seekToDefaultPosition(previousWindowIndex); + } + } + + @Override + public final boolean hasNext() { + return getNextWindowIndex() != C.INDEX_UNSET; + } + + @Override + public final void next() { + int nextWindowIndex = getNextWindowIndex(); + if (nextWindowIndex != C.INDEX_UNSET) { + seekToDefaultPosition(nextWindowIndex); + } + } + + @Override + public final void stop() { + stop(/* reset= */ false); + } + + @Override + public final int getNextWindowIndex() { + Timeline timeline = getCurrentTimeline(); + return timeline.isEmpty() + ? C.INDEX_UNSET + : timeline.getNextWindowIndex( + getCurrentWindowIndex(), getRepeatModeForNavigation(), getShuffleModeEnabled()); + } + + @Override + public final int getPreviousWindowIndex() { + Timeline timeline = getCurrentTimeline(); + return timeline.isEmpty() + ? C.INDEX_UNSET + : timeline.getPreviousWindowIndex( + getCurrentWindowIndex(), getRepeatModeForNavigation(), getShuffleModeEnabled()); + } + + @Override + @Nullable + public final Object getCurrentTag() { + Timeline timeline = getCurrentTimeline(); + return timeline.isEmpty() ? null : timeline.getWindow(getCurrentWindowIndex(), window).tag; + } + + @Override + @Nullable + public final Object getCurrentManifest() { + Timeline timeline = getCurrentTimeline(); + return timeline.isEmpty() ? null : timeline.getWindow(getCurrentWindowIndex(), window).manifest; + } + + @Override + public final int getBufferedPercentage() { + long position = getBufferedPosition(); + long duration = getDuration(); + return position == C.TIME_UNSET || duration == C.TIME_UNSET + ? 0 + : duration == 0 ? 100 : Util.constrainValue((int) ((position * 100) / duration), 0, 100); + } + + @Override + public final boolean isCurrentWindowDynamic() { + Timeline timeline = getCurrentTimeline(); + return !timeline.isEmpty() && timeline.getWindow(getCurrentWindowIndex(), window).isDynamic; + } + + @Override + public final boolean isCurrentWindowLive() { + Timeline timeline = getCurrentTimeline(); + return !timeline.isEmpty() && timeline.getWindow(getCurrentWindowIndex(), window).isLive; + } + + @Override + public final boolean isCurrentWindowSeekable() { + Timeline timeline = getCurrentTimeline(); + return !timeline.isEmpty() && timeline.getWindow(getCurrentWindowIndex(), window).isSeekable; + } + + @Override + public final long getContentDuration() { + Timeline timeline = getCurrentTimeline(); + return timeline.isEmpty() + ? C.TIME_UNSET + : timeline.getWindow(getCurrentWindowIndex(), window).getDurationMs(); + } + + @RepeatMode + private int getRepeatModeForNavigation() { + @RepeatMode int repeatMode = getRepeatMode(); + return repeatMode == REPEAT_MODE_ONE ? REPEAT_MODE_OFF : repeatMode; + } + + /** Holds a listener reference. */ + protected static final class ListenerHolder { + + /** + * The listener on which {link #invoke} will execute {@link ListenerInvocation listener + * invocations}. + */ + public final Player.EventListener listener; + + private boolean released; + + public ListenerHolder(Player.EventListener listener) { + this.listener = listener; + } + + /** Prevents any further {@link ListenerInvocation} to be executed on {@link #listener}. */ + public void release() { + released = true; + } + + /** + * Executes the given {@link ListenerInvocation} on {@link #listener}. Does nothing if {@link + * #release} has been called on this instance. + */ + public void invoke(ListenerInvocation listenerInvocation) { + if (!released) { + listenerInvocation.invokeListener(listener); + } + } + + @Override + public boolean equals(@Nullable Object other) { + if (this == other) { + return true; + } + if (other == null || getClass() != other.getClass()) { + return false; + } + return listener.equals(((ListenerHolder) other).listener); + } + + @Override + public int hashCode() { + return listener.hashCode(); + } + } + + /** Parameterized invocation of a {@link Player.EventListener} method. */ + protected interface ListenerInvocation { + + /** Executes the invocation on the given {@link Player.EventListener}. */ + void invokeListener(Player.EventListener listener); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BaseRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BaseRenderer.java new file mode 100644 index 0000000000..9c2c244053 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/BaseRenderer.java @@ -0,0 +1,436 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.os.Looper; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MediaClock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** + * An abstract base class suitable for most {@link Renderer} implementations. + */ +public abstract class BaseRenderer implements Renderer, RendererCapabilities { + + private final int trackType; + private final FormatHolder formatHolder; + + private RendererConfiguration configuration; + private int index; + private int state; + private SampleStream stream; + private Format[] streamFormats; + private long streamOffsetUs; + private long readingPositionUs; + private boolean streamIsFinal; + private boolean throwRendererExceptionIsExecuting; + + /** + * @param trackType The track type that the renderer handles. One of the {@link C} + * {@code TRACK_TYPE_*} constants. + */ + public BaseRenderer(int trackType) { + this.trackType = trackType; + formatHolder = new FormatHolder(); + readingPositionUs = C.TIME_END_OF_SOURCE; + } + + @Override + public final int getTrackType() { + return trackType; + } + + @Override + public final RendererCapabilities getCapabilities() { + return this; + } + + @Override + public final void setIndex(int index) { + this.index = index; + } + + @Override + @Nullable + public MediaClock getMediaClock() { + return null; + } + + @Override + public final int getState() { + return state; + } + + @Override + public final void enable(RendererConfiguration configuration, Format[] formats, + SampleStream stream, long positionUs, boolean joining, long offsetUs) + throws ExoPlaybackException { + Assertions.checkState(state == STATE_DISABLED); + this.configuration = configuration; + state = STATE_ENABLED; + onEnabled(joining); + replaceStream(formats, stream, offsetUs); + onPositionReset(positionUs, joining); + } + + @Override + public final void start() throws ExoPlaybackException { + Assertions.checkState(state == STATE_ENABLED); + state = STATE_STARTED; + onStarted(); + } + + @Override + public final void replaceStream(Format[] formats, SampleStream stream, long offsetUs) + throws ExoPlaybackException { + Assertions.checkState(!streamIsFinal); + this.stream = stream; + readingPositionUs = offsetUs; + streamFormats = formats; + streamOffsetUs = offsetUs; + onStreamChanged(formats, offsetUs); + } + + @Override + @Nullable + public final SampleStream getStream() { + return stream; + } + + @Override + public final boolean hasReadStreamToEnd() { + return readingPositionUs == C.TIME_END_OF_SOURCE; + } + + @Override + public final long getReadingPositionUs() { + return readingPositionUs; + } + + @Override + public final void setCurrentStreamFinal() { + streamIsFinal = true; + } + + @Override + public final boolean isCurrentStreamFinal() { + return streamIsFinal; + } + + @Override + public final void maybeThrowStreamError() throws IOException { + stream.maybeThrowError(); + } + + @Override + public final void resetPosition(long positionUs) throws ExoPlaybackException { + streamIsFinal = false; + readingPositionUs = positionUs; + onPositionReset(positionUs, false); + } + + @Override + public final void stop() throws ExoPlaybackException { + Assertions.checkState(state == STATE_STARTED); + state = STATE_ENABLED; + onStopped(); + } + + @Override + public final void disable() { + Assertions.checkState(state == STATE_ENABLED); + formatHolder.clear(); + state = STATE_DISABLED; + stream = null; + streamFormats = null; + streamIsFinal = false; + onDisabled(); + } + + @Override + public final void reset() { + Assertions.checkState(state == STATE_DISABLED); + formatHolder.clear(); + onReset(); + } + + // RendererCapabilities implementation. + + @Override + @AdaptiveSupport + public int supportsMixedMimeTypeAdaptation() throws ExoPlaybackException { + return ADAPTIVE_NOT_SUPPORTED; + } + + // PlayerMessage.Target implementation. + + @Override + public void handleMessage(int what, @Nullable Object object) throws ExoPlaybackException { + // Do nothing. + } + + // Methods to be overridden by subclasses. + + /** + * Called when the renderer is enabled. + *

+ * The default implementation is a no-op. + * + * @param joining Whether this renderer is being enabled to join an ongoing playback. + * @throws ExoPlaybackException If an error occurs. + */ + protected void onEnabled(boolean joining) throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called when the renderer's stream has changed. This occurs when the renderer is enabled after + * {@link #onEnabled(boolean)} has been called, and also when the stream has been replaced whilst + * the renderer is enabled or started. + *

+ * The default implementation is a no-op. + * + * @param formats The enabled formats. + * @param offsetUs The offset that will be added to the timestamps of buffers read via + * {@link #readSource(FormatHolder, DecoderInputBuffer, boolean)} so that decoder input + * buffers have monotonically increasing timestamps. + * @throws ExoPlaybackException If an error occurs. + */ + protected void onStreamChanged(Format[] formats, long offsetUs) throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called when the position is reset. This occurs when the renderer is enabled after + * {@link #onStreamChanged(Format[], long)} has been called, and also when a position + * discontinuity is encountered. + *

+ * After a position reset, the renderer's {@link SampleStream} is guaranteed to provide samples + * starting from a key frame. + *

+ * The default implementation is a no-op. + * + * @param positionUs The new playback position in microseconds. + * @param joining Whether this renderer is being enabled to join an ongoing playback. + * @throws ExoPlaybackException If an error occurs. + */ + protected void onPositionReset(long positionUs, boolean joining) throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called when the renderer is started. + *

+ * The default implementation is a no-op. + * + * @throws ExoPlaybackException If an error occurs. + */ + protected void onStarted() throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called when the renderer is stopped. + *

+ * The default implementation is a no-op. + * + * @throws ExoPlaybackException If an error occurs. + */ + protected void onStopped() throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called when the renderer is disabled. + *

+ * The default implementation is a no-op. + */ + protected void onDisabled() { + // Do nothing. + } + + /** + * Called when the renderer is reset. + * + *

The default implementation is a no-op. + */ + protected void onReset() { + // Do nothing. + } + + // Methods to be called by subclasses. + + /** Returns a clear {@link FormatHolder}. */ + protected final FormatHolder getFormatHolder() { + formatHolder.clear(); + return formatHolder; + } + + /** Returns the formats of the currently enabled stream. */ + protected final Format[] getStreamFormats() { + return streamFormats; + } + + /** + * Returns the configuration set when the renderer was most recently enabled. + */ + protected final RendererConfiguration getConfiguration() { + return configuration; + } + + /** Returns a {@link DrmSession} ready for assignment, handling resource management. */ + @Nullable + protected final DrmSession getUpdatedSourceDrmSession( + @Nullable Format oldFormat, + Format newFormat, + @Nullable DrmSessionManager drmSessionManager, + @Nullable DrmSession existingSourceSession) + throws ExoPlaybackException { + boolean drmInitDataChanged = + !Util.areEqual(newFormat.drmInitData, oldFormat == null ? null : oldFormat.drmInitData); + if (!drmInitDataChanged) { + return existingSourceSession; + } + @Nullable DrmSession newSourceDrmSession = null; + if (newFormat.drmInitData != null) { + if (drmSessionManager == null) { + throw createRendererException( + new IllegalStateException("Media requires a DrmSessionManager"), newFormat); + } + newSourceDrmSession = + drmSessionManager.acquireSession( + Assertions.checkNotNull(Looper.myLooper()), newFormat.drmInitData); + } + if (existingSourceSession != null) { + existingSourceSession.release(); + } + return newSourceDrmSession; + } + + /** + * Returns the index of the renderer within the player. + */ + protected final int getIndex() { + return index; + } + + /** + * Creates an {@link ExoPlaybackException} of type {@link ExoPlaybackException#TYPE_RENDERER} for + * this renderer. + * + * @param cause The cause of the exception. + * @param format The current format used by the renderer. May be null. + */ + protected final ExoPlaybackException createRendererException( + Exception cause, @Nullable Format format) { + @FormatSupport int formatSupport = RendererCapabilities.FORMAT_HANDLED; + if (format != null && !throwRendererExceptionIsExecuting) { + // Prevent recursive re-entry from subclass supportsFormat implementations. + throwRendererExceptionIsExecuting = true; + try { + formatSupport = RendererCapabilities.getFormatSupport(supportsFormat(format)); + } catch (ExoPlaybackException e) { + // Ignore, we are already failing. + } finally { + throwRendererExceptionIsExecuting = false; + } + } + return ExoPlaybackException.createForRenderer(cause, getIndex(), format, formatSupport); + } + + /** + * Reads from the enabled upstream source. If the upstream source has been read to the end then + * {@link C#RESULT_BUFFER_READ} is only returned if {@link #setCurrentStreamFinal()} has been + * called. {@link C#RESULT_NOTHING_READ} is returned otherwise. + * + * @param formatHolder A {@link FormatHolder} to populate in the case of reading a format. + * @param buffer A {@link DecoderInputBuffer} to populate in the case of reading a sample or the + * end of the stream. If the end of the stream has been reached, the {@link + * C#BUFFER_FLAG_END_OF_STREAM} flag will be set on the buffer. + * @param formatRequired Whether the caller requires that the format of the stream be read even if + * it's not changing. A sample will never be read if set to true, however it is still possible + * for the end of stream or nothing to be read. + * @return The result, which can be {@link C#RESULT_NOTHING_READ}, {@link C#RESULT_FORMAT_READ} or + * {@link C#RESULT_BUFFER_READ}. + */ + protected final int readSource( + FormatHolder formatHolder, DecoderInputBuffer buffer, boolean formatRequired) { + int result = stream.readData(formatHolder, buffer, formatRequired); + if (result == C.RESULT_BUFFER_READ) { + if (buffer.isEndOfStream()) { + readingPositionUs = C.TIME_END_OF_SOURCE; + return streamIsFinal ? C.RESULT_BUFFER_READ : C.RESULT_NOTHING_READ; + } + buffer.timeUs += streamOffsetUs; + readingPositionUs = Math.max(readingPositionUs, buffer.timeUs); + } else if (result == C.RESULT_FORMAT_READ) { + Format format = formatHolder.format; + if (format.subsampleOffsetUs != Format.OFFSET_SAMPLE_RELATIVE) { + format = format.copyWithSubsampleOffsetUs(format.subsampleOffsetUs + streamOffsetUs); + formatHolder.format = format; + } + } + return result; + } + + /** + * Attempts to skip to the keyframe before the specified position, or to the end of the stream if + * {@code positionUs} is beyond it. + * + * @param positionUs The position in microseconds. + * @return The number of samples that were skipped. + */ + protected int skipSource(long positionUs) { + return stream.skipData(positionUs - streamOffsetUs); + } + + /** + * Returns whether the upstream source is ready. + */ + protected final boolean isSourceReady() { + return hasReadStreamToEnd() ? streamIsFinal : stream.isReady(); + } + + /** + * Returns whether {@code drmSessionManager} supports the specified {@code drmInitData}, or true + * if {@code drmInitData} is null. + * + * @param drmSessionManager The drm session manager. + * @param drmInitData {@link DrmInitData} of the format to check for support. + * @return Whether {@code drmSessionManager} supports the specified {@code drmInitData}, or + * true if {@code drmInitData} is null. + */ + protected static boolean supportsFormatDrm(@Nullable DrmSessionManager drmSessionManager, + @Nullable DrmInitData drmInitData) { + if (drmInitData == null) { + // Content is unencrypted. + return true; + } else if (drmSessionManager == null) { + // Content is encrypted, but no drm session manager is available. + return false; + } + return drmSessionManager.canAcquireSession(drmInitData); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/C.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/C.java new file mode 100644 index 0000000000..673c3d90a8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/C.java @@ -0,0 +1,1160 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.annotation.TargetApi; +import android.content.Context; +import android.media.AudioAttributes; +import android.media.AudioFormat; +import android.media.AudioManager; +import android.media.MediaCodec; +import android.media.MediaFormat; +import android.view.Surface; +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlayerMessage.Target; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AuxEffectInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.SimpleDecoderVideoRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoDecoderOutputBufferRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoFrameMetadataListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical.CameraMotionListener; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.UUID; + +/** + * Defines constants used by the library. + */ +@SuppressWarnings("InlinedApi") +public final class C { + + private C() {} + + /** + * Special constant representing a time corresponding to the end of a source. Suitable for use in + * any time base. + */ + public static final long TIME_END_OF_SOURCE = Long.MIN_VALUE; + + /** + * Special constant representing an unset or unknown time or duration. Suitable for use in any + * time base. + */ + public static final long TIME_UNSET = Long.MIN_VALUE + 1; + + /** + * Represents an unset or unknown index. + */ + public static final int INDEX_UNSET = -1; + + /** + * Represents an unset or unknown position. + */ + public static final int POSITION_UNSET = -1; + + /** + * Represents an unset or unknown length. + */ + public static final int LENGTH_UNSET = -1; + + /** Represents an unset or unknown percentage. */ + public static final int PERCENTAGE_UNSET = -1; + + /** The number of milliseconds in one second. */ + public static final long MILLIS_PER_SECOND = 1000L; + + /** The number of microseconds in one second. */ + public static final long MICROS_PER_SECOND = 1000000L; + + /** + * The number of nanoseconds in one second. + */ + public static final long NANOS_PER_SECOND = 1000000000L; + + /** The number of bits per byte. */ + public static final int BITS_PER_BYTE = 8; + + /** The number of bytes per float. */ + public static final int BYTES_PER_FLOAT = 4; + + /** + * The name of the ASCII charset. + */ + public static final String ASCII_NAME = "US-ASCII"; + + /** + * The name of the UTF-8 charset. + */ + public static final String UTF8_NAME = "UTF-8"; + + /** The name of the ISO-8859-1 charset. */ + public static final String ISO88591_NAME = "ISO-8859-1"; + + /** The name of the UTF-16 charset. */ + public static final String UTF16_NAME = "UTF-16"; + + /** The name of the UTF-16 little-endian charset. */ + public static final String UTF16LE_NAME = "UTF-16LE"; + + /** + * The name of the serif font family. + */ + public static final String SERIF_NAME = "serif"; + + /** + * The name of the sans-serif font family. + */ + public static final String SANS_SERIF_NAME = "sans-serif"; + + /** + * Crypto modes for a codec. One of {@link #CRYPTO_MODE_UNENCRYPTED}, {@link #CRYPTO_MODE_AES_CTR} + * or {@link #CRYPTO_MODE_AES_CBC}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({CRYPTO_MODE_UNENCRYPTED, CRYPTO_MODE_AES_CTR, CRYPTO_MODE_AES_CBC}) + public @interface CryptoMode {} + /** + * @see MediaCodec#CRYPTO_MODE_UNENCRYPTED + */ + public static final int CRYPTO_MODE_UNENCRYPTED = MediaCodec.CRYPTO_MODE_UNENCRYPTED; + /** + * @see MediaCodec#CRYPTO_MODE_AES_CTR + */ + public static final int CRYPTO_MODE_AES_CTR = MediaCodec.CRYPTO_MODE_AES_CTR; + /** + * @see MediaCodec#CRYPTO_MODE_AES_CBC + */ + public static final int CRYPTO_MODE_AES_CBC = MediaCodec.CRYPTO_MODE_AES_CBC; + + /** + * Represents an unset {@link android.media.AudioTrack} session identifier. Equal to + * {@link AudioManager#AUDIO_SESSION_ID_GENERATE}. + */ + public static final int AUDIO_SESSION_ID_UNSET = AudioManager.AUDIO_SESSION_ID_GENERATE; + + /** + * Represents an audio encoding, or an invalid or unset value. One of {@link Format#NO_VALUE}, + * {@link #ENCODING_INVALID}, {@link #ENCODING_PCM_8BIT}, {@link #ENCODING_PCM_16BIT}, {@link + * #ENCODING_PCM_16BIT_BIG_ENDIAN}, {@link #ENCODING_PCM_24BIT}, {@link #ENCODING_PCM_32BIT}, + * {@link #ENCODING_PCM_FLOAT}, {@link #ENCODING_MP3}, {@link #ENCODING_AC3}, {@link + * #ENCODING_E_AC3}, {@link #ENCODING_E_AC3_JOC}, {@link #ENCODING_AC4}, {@link #ENCODING_DTS}, + * {@link #ENCODING_DTS_HD} or {@link #ENCODING_DOLBY_TRUEHD}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + Format.NO_VALUE, + ENCODING_INVALID, + ENCODING_PCM_8BIT, + ENCODING_PCM_16BIT, + ENCODING_PCM_16BIT_BIG_ENDIAN, + ENCODING_PCM_24BIT, + ENCODING_PCM_32BIT, + ENCODING_PCM_FLOAT, + ENCODING_MP3, + ENCODING_AC3, + ENCODING_E_AC3, + ENCODING_E_AC3_JOC, + ENCODING_AC4, + ENCODING_DTS, + ENCODING_DTS_HD, + ENCODING_DOLBY_TRUEHD + }) + public @interface Encoding {} + + /** + * Represents a PCM audio encoding, or an invalid or unset value. One of {@link Format#NO_VALUE}, + * {@link #ENCODING_INVALID}, {@link #ENCODING_PCM_8BIT}, {@link #ENCODING_PCM_16BIT}, {@link + * #ENCODING_PCM_16BIT_BIG_ENDIAN}, {@link #ENCODING_PCM_24BIT}, {@link #ENCODING_PCM_32BIT}, + * {@link #ENCODING_PCM_FLOAT}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + Format.NO_VALUE, + ENCODING_INVALID, + ENCODING_PCM_8BIT, + ENCODING_PCM_16BIT, + ENCODING_PCM_16BIT_BIG_ENDIAN, + ENCODING_PCM_24BIT, + ENCODING_PCM_32BIT, + ENCODING_PCM_FLOAT + }) + public @interface PcmEncoding {} + /** @see AudioFormat#ENCODING_INVALID */ + public static final int ENCODING_INVALID = AudioFormat.ENCODING_INVALID; + /** @see AudioFormat#ENCODING_PCM_8BIT */ + public static final int ENCODING_PCM_8BIT = AudioFormat.ENCODING_PCM_8BIT; + /** @see AudioFormat#ENCODING_PCM_16BIT */ + public static final int ENCODING_PCM_16BIT = AudioFormat.ENCODING_PCM_16BIT; + /** Like {@link #ENCODING_PCM_16BIT}, but with the bytes in big endian order. */ + public static final int ENCODING_PCM_16BIT_BIG_ENDIAN = 0x10000000; + /** PCM encoding with 24 bits per sample. */ + public static final int ENCODING_PCM_24BIT = 0x20000000; + /** PCM encoding with 32 bits per sample. */ + public static final int ENCODING_PCM_32BIT = 0x30000000; + /** @see AudioFormat#ENCODING_PCM_FLOAT */ + public static final int ENCODING_PCM_FLOAT = AudioFormat.ENCODING_PCM_FLOAT; + /** @see AudioFormat#ENCODING_MP3 */ + public static final int ENCODING_MP3 = AudioFormat.ENCODING_MP3; + /** @see AudioFormat#ENCODING_AC3 */ + public static final int ENCODING_AC3 = AudioFormat.ENCODING_AC3; + /** @see AudioFormat#ENCODING_E_AC3 */ + public static final int ENCODING_E_AC3 = AudioFormat.ENCODING_E_AC3; + /** @see AudioFormat#ENCODING_E_AC3_JOC */ + public static final int ENCODING_E_AC3_JOC = AudioFormat.ENCODING_E_AC3_JOC; + /** @see AudioFormat#ENCODING_AC4 */ + public static final int ENCODING_AC4 = AudioFormat.ENCODING_AC4; + /** @see AudioFormat#ENCODING_DTS */ + public static final int ENCODING_DTS = AudioFormat.ENCODING_DTS; + /** @see AudioFormat#ENCODING_DTS_HD */ + public static final int ENCODING_DTS_HD = AudioFormat.ENCODING_DTS_HD; + /** @see AudioFormat#ENCODING_DOLBY_TRUEHD */ + public static final int ENCODING_DOLBY_TRUEHD = AudioFormat.ENCODING_DOLBY_TRUEHD; + + /** + * Stream types for an {@link android.media.AudioTrack}. One of {@link #STREAM_TYPE_ALARM}, {@link + * #STREAM_TYPE_DTMF}, {@link #STREAM_TYPE_MUSIC}, {@link #STREAM_TYPE_NOTIFICATION}, {@link + * #STREAM_TYPE_RING}, {@link #STREAM_TYPE_SYSTEM}, {@link #STREAM_TYPE_VOICE_CALL} or {@link + * #STREAM_TYPE_USE_DEFAULT}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + STREAM_TYPE_ALARM, + STREAM_TYPE_DTMF, + STREAM_TYPE_MUSIC, + STREAM_TYPE_NOTIFICATION, + STREAM_TYPE_RING, + STREAM_TYPE_SYSTEM, + STREAM_TYPE_VOICE_CALL, + STREAM_TYPE_USE_DEFAULT + }) + public @interface StreamType {} + /** + * @see AudioManager#STREAM_ALARM + */ + public static final int STREAM_TYPE_ALARM = AudioManager.STREAM_ALARM; + /** + * @see AudioManager#STREAM_DTMF + */ + public static final int STREAM_TYPE_DTMF = AudioManager.STREAM_DTMF; + /** + * @see AudioManager#STREAM_MUSIC + */ + public static final int STREAM_TYPE_MUSIC = AudioManager.STREAM_MUSIC; + /** + * @see AudioManager#STREAM_NOTIFICATION + */ + public static final int STREAM_TYPE_NOTIFICATION = AudioManager.STREAM_NOTIFICATION; + /** + * @see AudioManager#STREAM_RING + */ + public static final int STREAM_TYPE_RING = AudioManager.STREAM_RING; + /** + * @see AudioManager#STREAM_SYSTEM + */ + public static final int STREAM_TYPE_SYSTEM = AudioManager.STREAM_SYSTEM; + /** + * @see AudioManager#STREAM_VOICE_CALL + */ + public static final int STREAM_TYPE_VOICE_CALL = AudioManager.STREAM_VOICE_CALL; + /** + * @see AudioManager#USE_DEFAULT_STREAM_TYPE + */ + public static final int STREAM_TYPE_USE_DEFAULT = AudioManager.USE_DEFAULT_STREAM_TYPE; + /** + * The default stream type used by audio renderers. + */ + public static final int STREAM_TYPE_DEFAULT = STREAM_TYPE_MUSIC; + + /** + * Content types for {@link org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes}. One of {@link + * #CONTENT_TYPE_MOVIE}, {@link #CONTENT_TYPE_MUSIC}, {@link #CONTENT_TYPE_SONIFICATION}, {@link + * #CONTENT_TYPE_SPEECH} or {@link #CONTENT_TYPE_UNKNOWN}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + CONTENT_TYPE_MOVIE, + CONTENT_TYPE_MUSIC, + CONTENT_TYPE_SONIFICATION, + CONTENT_TYPE_SPEECH, + CONTENT_TYPE_UNKNOWN + }) + public @interface AudioContentType {} + /** + * @see android.media.AudioAttributes#CONTENT_TYPE_MOVIE + */ + public static final int CONTENT_TYPE_MOVIE = android.media.AudioAttributes.CONTENT_TYPE_MOVIE; + /** + * @see android.media.AudioAttributes#CONTENT_TYPE_MUSIC + */ + public static final int CONTENT_TYPE_MUSIC = android.media.AudioAttributes.CONTENT_TYPE_MUSIC; + /** + * @see android.media.AudioAttributes#CONTENT_TYPE_SONIFICATION + */ + public static final int CONTENT_TYPE_SONIFICATION = + android.media.AudioAttributes.CONTENT_TYPE_SONIFICATION; + /** + * @see android.media.AudioAttributes#CONTENT_TYPE_SPEECH + */ + public static final int CONTENT_TYPE_SPEECH = + android.media.AudioAttributes.CONTENT_TYPE_SPEECH; + /** + * @see android.media.AudioAttributes#CONTENT_TYPE_UNKNOWN + */ + public static final int CONTENT_TYPE_UNKNOWN = + android.media.AudioAttributes.CONTENT_TYPE_UNKNOWN; + + /** + * Flags for {@link org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes}. Possible flag value is + * {@link #FLAG_AUDIBILITY_ENFORCED}. + * + *

Note that {@code FLAG_HW_AV_SYNC} is not available because the player takes care of setting + * the flag when tunneling is enabled via a track selector. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {FLAG_AUDIBILITY_ENFORCED}) + public @interface AudioFlags {} + /** + * @see android.media.AudioAttributes#FLAG_AUDIBILITY_ENFORCED + */ + public static final int FLAG_AUDIBILITY_ENFORCED = + android.media.AudioAttributes.FLAG_AUDIBILITY_ENFORCED; + + /** + * Usage types for {@link org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes}. One of {@link + * #USAGE_ALARM}, {@link #USAGE_ASSISTANCE_ACCESSIBILITY}, {@link + * #USAGE_ASSISTANCE_NAVIGATION_GUIDANCE}, {@link #USAGE_ASSISTANCE_SONIFICATION}, {@link + * #USAGE_ASSISTANT}, {@link #USAGE_GAME}, {@link #USAGE_MEDIA}, {@link #USAGE_NOTIFICATION}, + * {@link #USAGE_NOTIFICATION_COMMUNICATION_DELAYED}, {@link + * #USAGE_NOTIFICATION_COMMUNICATION_INSTANT}, {@link #USAGE_NOTIFICATION_COMMUNICATION_REQUEST}, + * {@link #USAGE_NOTIFICATION_EVENT}, {@link #USAGE_NOTIFICATION_RINGTONE}, {@link + * #USAGE_UNKNOWN}, {@link #USAGE_VOICE_COMMUNICATION} or {@link + * #USAGE_VOICE_COMMUNICATION_SIGNALLING}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + USAGE_ALARM, + USAGE_ASSISTANCE_ACCESSIBILITY, + USAGE_ASSISTANCE_NAVIGATION_GUIDANCE, + USAGE_ASSISTANCE_SONIFICATION, + USAGE_ASSISTANT, + USAGE_GAME, + USAGE_MEDIA, + USAGE_NOTIFICATION, + USAGE_NOTIFICATION_COMMUNICATION_DELAYED, + USAGE_NOTIFICATION_COMMUNICATION_INSTANT, + USAGE_NOTIFICATION_COMMUNICATION_REQUEST, + USAGE_NOTIFICATION_EVENT, + USAGE_NOTIFICATION_RINGTONE, + USAGE_UNKNOWN, + USAGE_VOICE_COMMUNICATION, + USAGE_VOICE_COMMUNICATION_SIGNALLING + }) + public @interface AudioUsage {} + /** + * @see android.media.AudioAttributes#USAGE_ALARM + */ + public static final int USAGE_ALARM = android.media.AudioAttributes.USAGE_ALARM; + /** @see android.media.AudioAttributes#USAGE_ASSISTANCE_ACCESSIBILITY */ + public static final int USAGE_ASSISTANCE_ACCESSIBILITY = + android.media.AudioAttributes.USAGE_ASSISTANCE_ACCESSIBILITY; + /** + * @see android.media.AudioAttributes#USAGE_ASSISTANCE_NAVIGATION_GUIDANCE + */ + public static final int USAGE_ASSISTANCE_NAVIGATION_GUIDANCE = + android.media.AudioAttributes.USAGE_ASSISTANCE_NAVIGATION_GUIDANCE; + /** + * @see android.media.AudioAttributes#USAGE_ASSISTANCE_SONIFICATION + */ + public static final int USAGE_ASSISTANCE_SONIFICATION = + android.media.AudioAttributes.USAGE_ASSISTANCE_SONIFICATION; + /** @see android.media.AudioAttributes#USAGE_ASSISTANT */ + public static final int USAGE_ASSISTANT = android.media.AudioAttributes.USAGE_ASSISTANT; + /** + * @see android.media.AudioAttributes#USAGE_GAME + */ + public static final int USAGE_GAME = android.media.AudioAttributes.USAGE_GAME; + /** + * @see android.media.AudioAttributes#USAGE_MEDIA + */ + public static final int USAGE_MEDIA = android.media.AudioAttributes.USAGE_MEDIA; + /** + * @see android.media.AudioAttributes#USAGE_NOTIFICATION + */ + public static final int USAGE_NOTIFICATION = android.media.AudioAttributes.USAGE_NOTIFICATION; + /** + * @see android.media.AudioAttributes#USAGE_NOTIFICATION_COMMUNICATION_DELAYED + */ + public static final int USAGE_NOTIFICATION_COMMUNICATION_DELAYED = + android.media.AudioAttributes.USAGE_NOTIFICATION_COMMUNICATION_DELAYED; + /** + * @see android.media.AudioAttributes#USAGE_NOTIFICATION_COMMUNICATION_INSTANT + */ + public static final int USAGE_NOTIFICATION_COMMUNICATION_INSTANT = + android.media.AudioAttributes.USAGE_NOTIFICATION_COMMUNICATION_INSTANT; + /** + * @see android.media.AudioAttributes#USAGE_NOTIFICATION_COMMUNICATION_REQUEST + */ + public static final int USAGE_NOTIFICATION_COMMUNICATION_REQUEST = + android.media.AudioAttributes.USAGE_NOTIFICATION_COMMUNICATION_REQUEST; + /** + * @see android.media.AudioAttributes#USAGE_NOTIFICATION_EVENT + */ + public static final int USAGE_NOTIFICATION_EVENT = + android.media.AudioAttributes.USAGE_NOTIFICATION_EVENT; + /** + * @see android.media.AudioAttributes#USAGE_NOTIFICATION_RINGTONE + */ + public static final int USAGE_NOTIFICATION_RINGTONE = + android.media.AudioAttributes.USAGE_NOTIFICATION_RINGTONE; + /** + * @see android.media.AudioAttributes#USAGE_UNKNOWN + */ + public static final int USAGE_UNKNOWN = android.media.AudioAttributes.USAGE_UNKNOWN; + /** + * @see android.media.AudioAttributes#USAGE_VOICE_COMMUNICATION + */ + public static final int USAGE_VOICE_COMMUNICATION = + android.media.AudioAttributes.USAGE_VOICE_COMMUNICATION; + /** + * @see android.media.AudioAttributes#USAGE_VOICE_COMMUNICATION_SIGNALLING + */ + public static final int USAGE_VOICE_COMMUNICATION_SIGNALLING = + android.media.AudioAttributes.USAGE_VOICE_COMMUNICATION_SIGNALLING; + + /** + * Capture policies for {@link org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes}. One of {@link + * #ALLOW_CAPTURE_BY_ALL}, {@link #ALLOW_CAPTURE_BY_NONE} or {@link #ALLOW_CAPTURE_BY_SYSTEM}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ALLOW_CAPTURE_BY_ALL, ALLOW_CAPTURE_BY_NONE, ALLOW_CAPTURE_BY_SYSTEM}) + public @interface AudioAllowedCapturePolicy {} + /** See {@link android.media.AudioAttributes#ALLOW_CAPTURE_BY_ALL}. */ + public static final int ALLOW_CAPTURE_BY_ALL = AudioAttributes.ALLOW_CAPTURE_BY_ALL; + /** See {@link android.media.AudioAttributes#ALLOW_CAPTURE_BY_NONE}. */ + public static final int ALLOW_CAPTURE_BY_NONE = AudioAttributes.ALLOW_CAPTURE_BY_NONE; + /** See {@link android.media.AudioAttributes#ALLOW_CAPTURE_BY_SYSTEM}. */ + public static final int ALLOW_CAPTURE_BY_SYSTEM = AudioAttributes.ALLOW_CAPTURE_BY_SYSTEM; + + /** + * Audio focus types. One of {@link #AUDIOFOCUS_NONE}, {@link #AUDIOFOCUS_GAIN}, {@link + * #AUDIOFOCUS_GAIN_TRANSIENT}, {@link #AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK} or {@link + * #AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + AUDIOFOCUS_NONE, + AUDIOFOCUS_GAIN, + AUDIOFOCUS_GAIN_TRANSIENT, + AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK, + AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE + }) + public @interface AudioFocusGain {} + /** @see AudioManager#AUDIOFOCUS_NONE */ + public static final int AUDIOFOCUS_NONE = AudioManager.AUDIOFOCUS_NONE; + /** @see AudioManager#AUDIOFOCUS_GAIN */ + public static final int AUDIOFOCUS_GAIN = AudioManager.AUDIOFOCUS_GAIN; + /** @see AudioManager#AUDIOFOCUS_GAIN_TRANSIENT */ + public static final int AUDIOFOCUS_GAIN_TRANSIENT = AudioManager.AUDIOFOCUS_GAIN_TRANSIENT; + /** @see AudioManager#AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK */ + public static final int AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK = + AudioManager.AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK; + /** @see AudioManager#AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE */ + public static final int AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE = + AudioManager.AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE; + + /** + * Flags which can apply to a buffer containing a media sample. Possible flag values are {@link + * #BUFFER_FLAG_KEY_FRAME}, {@link #BUFFER_FLAG_END_OF_STREAM}, {@link #BUFFER_FLAG_LAST_SAMPLE}, + * {@link #BUFFER_FLAG_ENCRYPTED} and {@link #BUFFER_FLAG_DECODE_ONLY}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = { + BUFFER_FLAG_KEY_FRAME, + BUFFER_FLAG_END_OF_STREAM, + BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA, + BUFFER_FLAG_LAST_SAMPLE, + BUFFER_FLAG_ENCRYPTED, + BUFFER_FLAG_DECODE_ONLY + }) + public @interface BufferFlags {} + /** + * Indicates that a buffer holds a synchronization sample. + */ + public static final int BUFFER_FLAG_KEY_FRAME = MediaCodec.BUFFER_FLAG_KEY_FRAME; + /** + * Flag for empty buffers that signal that the end of the stream was reached. + */ + public static final int BUFFER_FLAG_END_OF_STREAM = MediaCodec.BUFFER_FLAG_END_OF_STREAM; + /** Indicates that a buffer has supplemental data. */ + public static final int BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA = 1 << 28; // 0x10000000 + /** Indicates that a buffer is known to contain the last media sample of the stream. */ + public static final int BUFFER_FLAG_LAST_SAMPLE = 1 << 29; // 0x20000000 + /** Indicates that a buffer is (at least partially) encrypted. */ + public static final int BUFFER_FLAG_ENCRYPTED = 1 << 30; // 0x40000000 + /** Indicates that a buffer should be decoded but not rendered. */ + public static final int BUFFER_FLAG_DECODE_ONLY = 1 << 31; // 0x80000000 + + // LINT.IfChange + /** + * Video decoder output modes. Possible modes are {@link #VIDEO_OUTPUT_MODE_NONE}, {@link + * #VIDEO_OUTPUT_MODE_YUV} and {@link #VIDEO_OUTPUT_MODE_SURFACE_YUV}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef(value = {VIDEO_OUTPUT_MODE_NONE, VIDEO_OUTPUT_MODE_YUV, VIDEO_OUTPUT_MODE_SURFACE_YUV}) + public @interface VideoOutputMode {} + /** Video decoder output mode is not set. */ + public static final int VIDEO_OUTPUT_MODE_NONE = -1; + /** Video decoder output mode that outputs raw 4:2:0 YUV planes. */ + public static final int VIDEO_OUTPUT_MODE_YUV = 0; + /** Video decoder output mode that renders 4:2:0 YUV planes directly to a surface. */ + public static final int VIDEO_OUTPUT_MODE_SURFACE_YUV = 1; + // LINT.ThenChange( + // ../../../../../../../../../extensions/av1/src/main/jni/gav1_jni.cc, + // ../../../../../../../../../extensions/vp9/src/main/jni/vpx_jni.cc + // ) + + /** + * Video scaling modes for {@link MediaCodec}-based {@link Renderer}s. One of {@link + * #VIDEO_SCALING_MODE_SCALE_TO_FIT} or {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef(value = {VIDEO_SCALING_MODE_SCALE_TO_FIT, VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING}) + public @interface VideoScalingMode {} + /** + * @see MediaCodec#VIDEO_SCALING_MODE_SCALE_TO_FIT + */ + public static final int VIDEO_SCALING_MODE_SCALE_TO_FIT = + MediaCodec.VIDEO_SCALING_MODE_SCALE_TO_FIT; + /** + * @see MediaCodec#VIDEO_SCALING_MODE_SCALE_TO_FIT + */ + public static final int VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING = + MediaCodec.VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING; + /** + * A default video scaling mode for {@link MediaCodec}-based {@link Renderer}s. + */ + public static final int VIDEO_SCALING_MODE_DEFAULT = VIDEO_SCALING_MODE_SCALE_TO_FIT; + + /** + * Track selection flags. Possible flag values are {@link #SELECTION_FLAG_DEFAULT}, {@link + * #SELECTION_FLAG_FORCED} and {@link #SELECTION_FLAG_AUTOSELECT}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {SELECTION_FLAG_DEFAULT, SELECTION_FLAG_FORCED, SELECTION_FLAG_AUTOSELECT}) + public @interface SelectionFlags {} + /** + * Indicates that the track should be selected if user preferences do not state otherwise. + */ + public static final int SELECTION_FLAG_DEFAULT = 1; + /** Indicates that the track must be displayed. Only applies to text tracks. */ + public static final int SELECTION_FLAG_FORCED = 1 << 1; // 2 + /** + * Indicates that the player may choose to play the track in absence of an explicit user + * preference. + */ + public static final int SELECTION_FLAG_AUTOSELECT = 1 << 2; // 4 + + /** Represents an undetermined language as an ISO 639-2 language code. */ + public static final String LANGUAGE_UNDETERMINED = "und"; + + /** + * Represents a streaming or other media type. One of {@link #TYPE_DASH}, {@link #TYPE_SS}, {@link + * #TYPE_HLS} or {@link #TYPE_OTHER}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({TYPE_DASH, TYPE_SS, TYPE_HLS, TYPE_OTHER}) + public @interface ContentType {} + /** + * Value returned by {@link Util#inferContentType(String)} for DASH manifests. + */ + public static final int TYPE_DASH = 0; + /** + * Value returned by {@link Util#inferContentType(String)} for Smooth Streaming manifests. + */ + public static final int TYPE_SS = 1; + /** + * Value returned by {@link Util#inferContentType(String)} for HLS manifests. + */ + public static final int TYPE_HLS = 2; + /** + * Value returned by {@link Util#inferContentType(String)} for files other than DASH, HLS or + * Smooth Streaming manifests. + */ + public static final int TYPE_OTHER = 3; + + /** + * A return value for methods where the end of an input was encountered. + */ + public static final int RESULT_END_OF_INPUT = -1; + /** + * A return value for methods where the length of parsed data exceeds the maximum length allowed. + */ + public static final int RESULT_MAX_LENGTH_EXCEEDED = -2; + /** + * A return value for methods where nothing was read. + */ + public static final int RESULT_NOTHING_READ = -3; + /** + * A return value for methods where a buffer was read. + */ + public static final int RESULT_BUFFER_READ = -4; + /** + * A return value for methods where a format was read. + */ + public static final int RESULT_FORMAT_READ = -5; + + /** A data type constant for data of unknown or unspecified type. */ + public static final int DATA_TYPE_UNKNOWN = 0; + /** A data type constant for media, typically containing media samples. */ + public static final int DATA_TYPE_MEDIA = 1; + /** A data type constant for media, typically containing only initialization data. */ + public static final int DATA_TYPE_MEDIA_INITIALIZATION = 2; + /** A data type constant for drm or encryption data. */ + public static final int DATA_TYPE_DRM = 3; + /** A data type constant for a manifest file. */ + public static final int DATA_TYPE_MANIFEST = 4; + /** A data type constant for time synchronization data. */ + public static final int DATA_TYPE_TIME_SYNCHRONIZATION = 5; + /** A data type constant for ads loader data. */ + public static final int DATA_TYPE_AD = 6; + /** + * A data type constant for live progressive media streams, typically containing media samples. + */ + public static final int DATA_TYPE_MEDIA_PROGRESSIVE_LIVE = 7; + /** + * Applications or extensions may define custom {@code DATA_TYPE_*} constants greater than or + * equal to this value. + */ + public static final int DATA_TYPE_CUSTOM_BASE = 10000; + + /** A type constant for tracks of unknown type. */ + public static final int TRACK_TYPE_UNKNOWN = -1; + /** A type constant for tracks of some default type, where the type itself is unknown. */ + public static final int TRACK_TYPE_DEFAULT = 0; + /** A type constant for audio tracks. */ + public static final int TRACK_TYPE_AUDIO = 1; + /** A type constant for video tracks. */ + public static final int TRACK_TYPE_VIDEO = 2; + /** A type constant for text tracks. */ + public static final int TRACK_TYPE_TEXT = 3; + /** A type constant for metadata tracks. */ + public static final int TRACK_TYPE_METADATA = 4; + /** A type constant for camera motion tracks. */ + public static final int TRACK_TYPE_CAMERA_MOTION = 5; + /** A type constant for a dummy or empty track. */ + public static final int TRACK_TYPE_NONE = 6; + /** + * Applications or extensions may define custom {@code TRACK_TYPE_*} constants greater than or + * equal to this value. + */ + public static final int TRACK_TYPE_CUSTOM_BASE = 10000; + + /** + * A selection reason constant for selections whose reasons are unknown or unspecified. + */ + public static final int SELECTION_REASON_UNKNOWN = 0; + /** + * A selection reason constant for an initial track selection. + */ + public static final int SELECTION_REASON_INITIAL = 1; + /** + * A selection reason constant for an manual (i.e. user initiated) track selection. + */ + public static final int SELECTION_REASON_MANUAL = 2; + /** + * A selection reason constant for an adaptive track selection. + */ + public static final int SELECTION_REASON_ADAPTIVE = 3; + /** + * A selection reason constant for a trick play track selection. + */ + public static final int SELECTION_REASON_TRICK_PLAY = 4; + /** + * Applications or extensions may define custom {@code SELECTION_REASON_*} constants greater than + * or equal to this value. + */ + public static final int SELECTION_REASON_CUSTOM_BASE = 10000; + + /** A default size in bytes for an individual allocation that forms part of a larger buffer. */ + public static final int DEFAULT_BUFFER_SEGMENT_SIZE = 64 * 1024; + + /** "cenc" scheme type name as defined in ISO/IEC 23001-7:2016. */ + @SuppressWarnings("ConstantField") + public static final String CENC_TYPE_cenc = "cenc"; + + /** "cbc1" scheme type name as defined in ISO/IEC 23001-7:2016. */ + @SuppressWarnings("ConstantField") + public static final String CENC_TYPE_cbc1 = "cbc1"; + + /** "cens" scheme type name as defined in ISO/IEC 23001-7:2016. */ + @SuppressWarnings("ConstantField") + public static final String CENC_TYPE_cens = "cens"; + + /** "cbcs" scheme type name as defined in ISO/IEC 23001-7:2016. */ + @SuppressWarnings("ConstantField") + public static final String CENC_TYPE_cbcs = "cbcs"; + + /** + * The Nil UUID as defined by + * RFC4122. + */ + public static final UUID UUID_NIL = new UUID(0L, 0L); + + /** + * UUID for the W3C + * Common PSSH + * box. + */ + public static final UUID COMMON_PSSH_UUID = new UUID(0x1077EFECC0B24D02L, 0xACE33C1E52E2FB4BL); + + /** + * UUID for the ClearKey DRM scheme. + *

+ * ClearKey is supported on Android devices running Android 5.0 (API Level 21) and up. + */ + public static final UUID CLEARKEY_UUID = new UUID(0xE2719D58A985B3C9L, 0x781AB030AF78D30EL); + + /** + * UUID for the Widevine DRM scheme. + *

+ * Widevine is supported on Android devices running Android 4.3 (API Level 18) and up. + */ + public static final UUID WIDEVINE_UUID = new UUID(0xEDEF8BA979D64ACEL, 0xA3C827DCD51D21EDL); + + /** + * UUID for the PlayReady DRM scheme. + *

+ * PlayReady is supported on all AndroidTV devices. Note that most other Android devices do not + * provide PlayReady support. + */ + public static final UUID PLAYREADY_UUID = new UUID(0x9A04F07998404286L, 0xAB92E65BE0885F95L); + + /** + * The type of a message that can be passed to a video {@link Renderer} via {@link + * ExoPlayer#createMessage(Target)}. The message payload should be the target {@link Surface}, or + * null. + */ + public static final int MSG_SET_SURFACE = 1; + + /** + * A type of a message that can be passed to an audio {@link Renderer} via {@link + * ExoPlayer#createMessage(Target)}. The message payload should be a {@link Float} with 0 being + * silence and 1 being unity gain. + */ + public static final int MSG_SET_VOLUME = 2; + + /** + * A type of a message that can be passed to an audio {@link Renderer} via {@link + * ExoPlayer#createMessage(Target)}. The message payload should be an {@link + * org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes} instance that will configure the + * underlying audio track. If not set, the default audio attributes will be used. They are + * suitable for general media playback. + * + *

Setting the audio attributes during playback may introduce a short gap in audio output as + * the audio track is recreated. A new audio session id will also be generated. + * + *

If tunneling is enabled by the track selector, the specified audio attributes will be + * ignored, but they will take effect if audio is later played without tunneling. + * + *

If the device is running a build before platform API version 21, audio attributes cannot be + * set directly on the underlying audio track. In this case, the usage will be mapped onto an + * equivalent stream type using {@link Util#getStreamTypeForAudioUsage(int)}. + * + *

To get audio attributes that are equivalent to a legacy stream type, pass the stream type to + * {@link Util#getAudioUsageForStreamType(int)} and use the returned {@link C.AudioUsage} to build + * an audio attributes instance. + */ + public static final int MSG_SET_AUDIO_ATTRIBUTES = 3; + + /** + * The type of a message that can be passed to a {@link MediaCodec}-based video {@link Renderer} + * via {@link ExoPlayer#createMessage(Target)}. The message payload should be one of the integer + * scaling modes in {@link C.VideoScalingMode}. + * + *

Note that the scaling mode only applies if the {@link Surface} targeted by the renderer is + * owned by a {@link android.view.SurfaceView}. + */ + public static final int MSG_SET_SCALING_MODE = 4; + + /** + * A type of a message that can be passed to an audio {@link Renderer} via {@link + * ExoPlayer#createMessage(Target)}. The message payload should be an {@link AuxEffectInfo} + * instance representing an auxiliary audio effect for the underlying audio track. + */ + public static final int MSG_SET_AUX_EFFECT_INFO = 5; + + /** + * The type of a message that can be passed to a video {@link Renderer} via {@link + * ExoPlayer#createMessage(Target)}. The message payload should be a {@link + * VideoFrameMetadataListener} instance, or null. + */ + public static final int MSG_SET_VIDEO_FRAME_METADATA_LISTENER = 6; + + /** + * The type of a message that can be passed to a camera motion {@link Renderer} via {@link + * ExoPlayer#createMessage(Target)}. The message payload should be a {@link CameraMotionListener} + * instance, or null. + */ + public static final int MSG_SET_CAMERA_MOTION_LISTENER = 7; + + /** + * The type of a message that can be passed to a {@link SimpleDecoderVideoRenderer} via {@link + * ExoPlayer#createMessage(Target)}. The message payload should be the target {@link + * VideoDecoderOutputBufferRenderer}, or null. + * + *

This message is intended only for use with extension renderers that expect a {@link + * VideoDecoderOutputBufferRenderer}. For other use cases, an output surface should be passed via + * {@link #MSG_SET_SURFACE} instead. + */ + public static final int MSG_SET_VIDEO_DECODER_OUTPUT_BUFFER_RENDERER = 8; + + /** + * Applications or extensions may define custom {@code MSG_*} constants that can be passed to + * {@link Renderer}s. These custom constants must be greater than or equal to this value. + */ + public static final int MSG_CUSTOM_BASE = 10000; + + /** + * The stereo mode for 360/3D/VR videos. One of {@link Format#NO_VALUE}, {@link + * #STEREO_MODE_MONO}, {@link #STEREO_MODE_TOP_BOTTOM}, {@link #STEREO_MODE_LEFT_RIGHT} or {@link + * #STEREO_MODE_STEREO_MESH}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + Format.NO_VALUE, + STEREO_MODE_MONO, + STEREO_MODE_TOP_BOTTOM, + STEREO_MODE_LEFT_RIGHT, + STEREO_MODE_STEREO_MESH + }) + public @interface StereoMode {} + /** + * Indicates Monoscopic stereo layout, used with 360/3D/VR videos. + */ + public static final int STEREO_MODE_MONO = 0; + /** + * Indicates Top-Bottom stereo layout, used with 360/3D/VR videos. + */ + public static final int STEREO_MODE_TOP_BOTTOM = 1; + /** + * Indicates Left-Right stereo layout, used with 360/3D/VR videos. + */ + public static final int STEREO_MODE_LEFT_RIGHT = 2; + /** + * Indicates a stereo layout where the left and right eyes have separate meshes, + * used with 360/3D/VR videos. + */ + public static final int STEREO_MODE_STEREO_MESH = 3; + + /** + * Video colorspaces. One of {@link Format#NO_VALUE}, {@link #COLOR_SPACE_BT709}, {@link + * #COLOR_SPACE_BT601} or {@link #COLOR_SPACE_BT2020}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({Format.NO_VALUE, COLOR_SPACE_BT709, COLOR_SPACE_BT601, COLOR_SPACE_BT2020}) + public @interface ColorSpace {} + /** + * @see MediaFormat#COLOR_STANDARD_BT709 + */ + public static final int COLOR_SPACE_BT709 = MediaFormat.COLOR_STANDARD_BT709; + /** + * @see MediaFormat#COLOR_STANDARD_BT601_PAL + */ + public static final int COLOR_SPACE_BT601 = MediaFormat.COLOR_STANDARD_BT601_PAL; + /** + * @see MediaFormat#COLOR_STANDARD_BT2020 + */ + public static final int COLOR_SPACE_BT2020 = MediaFormat.COLOR_STANDARD_BT2020; + + /** + * Video color transfer characteristics. One of {@link Format#NO_VALUE}, {@link + * #COLOR_TRANSFER_SDR}, {@link #COLOR_TRANSFER_ST2084} or {@link #COLOR_TRANSFER_HLG}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({Format.NO_VALUE, COLOR_TRANSFER_SDR, COLOR_TRANSFER_ST2084, COLOR_TRANSFER_HLG}) + public @interface ColorTransfer {} + /** + * @see MediaFormat#COLOR_TRANSFER_SDR_VIDEO + */ + public static final int COLOR_TRANSFER_SDR = MediaFormat.COLOR_TRANSFER_SDR_VIDEO; + /** + * @see MediaFormat#COLOR_TRANSFER_ST2084 + */ + public static final int COLOR_TRANSFER_ST2084 = MediaFormat.COLOR_TRANSFER_ST2084; + /** + * @see MediaFormat#COLOR_TRANSFER_HLG + */ + public static final int COLOR_TRANSFER_HLG = MediaFormat.COLOR_TRANSFER_HLG; + + /** + * Video color range. One of {@link Format#NO_VALUE}, {@link #COLOR_RANGE_LIMITED} or {@link + * #COLOR_RANGE_FULL}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({Format.NO_VALUE, COLOR_RANGE_LIMITED, COLOR_RANGE_FULL}) + public @interface ColorRange {} + /** + * @see MediaFormat#COLOR_RANGE_LIMITED + */ + public static final int COLOR_RANGE_LIMITED = MediaFormat.COLOR_RANGE_LIMITED; + /** + * @see MediaFormat#COLOR_RANGE_FULL + */ + public static final int COLOR_RANGE_FULL = MediaFormat.COLOR_RANGE_FULL; + + /** Video projection types. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + Format.NO_VALUE, + PROJECTION_RECTANGULAR, + PROJECTION_EQUIRECTANGULAR, + PROJECTION_CUBEMAP, + PROJECTION_MESH + }) + public @interface Projection {} + /** Conventional rectangular projection. */ + public static final int PROJECTION_RECTANGULAR = 0; + /** Equirectangular spherical projection. */ + public static final int PROJECTION_EQUIRECTANGULAR = 1; + /** Cube map projection. */ + public static final int PROJECTION_CUBEMAP = 2; + /** 3-D mesh projection. */ + public static final int PROJECTION_MESH = 3; + + /** + * Priority for media playback. + * + *

Larger values indicate higher priorities. + */ + public static final int PRIORITY_PLAYBACK = 0; + + /** + * Priority for media downloading. + * + *

Larger values indicate higher priorities. + */ + public static final int PRIORITY_DOWNLOAD = PRIORITY_PLAYBACK - 1000; + + /** + * Network connection type. One of {@link #NETWORK_TYPE_UNKNOWN}, {@link #NETWORK_TYPE_OFFLINE}, + * {@link #NETWORK_TYPE_WIFI}, {@link #NETWORK_TYPE_2G}, {@link #NETWORK_TYPE_3G}, {@link + * #NETWORK_TYPE_4G}, {@link #NETWORK_TYPE_5G}, {@link #NETWORK_TYPE_CELLULAR_UNKNOWN}, {@link + * #NETWORK_TYPE_ETHERNET} or {@link #NETWORK_TYPE_OTHER}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + NETWORK_TYPE_UNKNOWN, + NETWORK_TYPE_OFFLINE, + NETWORK_TYPE_WIFI, + NETWORK_TYPE_2G, + NETWORK_TYPE_3G, + NETWORK_TYPE_4G, + NETWORK_TYPE_5G, + NETWORK_TYPE_CELLULAR_UNKNOWN, + NETWORK_TYPE_ETHERNET, + NETWORK_TYPE_OTHER + }) + public @interface NetworkType {} + /** Unknown network type. */ + public static final int NETWORK_TYPE_UNKNOWN = 0; + /** No network connection. */ + public static final int NETWORK_TYPE_OFFLINE = 1; + /** Network type for a Wifi connection. */ + public static final int NETWORK_TYPE_WIFI = 2; + /** Network type for a 2G cellular connection. */ + public static final int NETWORK_TYPE_2G = 3; + /** Network type for a 3G cellular connection. */ + public static final int NETWORK_TYPE_3G = 4; + /** Network type for a 4G cellular connection. */ + public static final int NETWORK_TYPE_4G = 5; + /** Network type for a 5G cellular connection. */ + public static final int NETWORK_TYPE_5G = 9; + /** + * Network type for cellular connections which cannot be mapped to one of {@link + * #NETWORK_TYPE_2G}, {@link #NETWORK_TYPE_3G}, or {@link #NETWORK_TYPE_4G}. + */ + public static final int NETWORK_TYPE_CELLULAR_UNKNOWN = 6; + /** Network type for an Ethernet connection. */ + public static final int NETWORK_TYPE_ETHERNET = 7; + /** Network type for other connections which are not Wifi or cellular (e.g. VPN, Bluetooth). */ + public static final int NETWORK_TYPE_OTHER = 8; + + /** + * Mode specifying whether the player should hold a WakeLock and a WifiLock. One of {@link + * #WAKE_MODE_NONE}, {@link #WAKE_MODE_LOCAL} and {@link #WAKE_MODE_NETWORK}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({WAKE_MODE_NONE, WAKE_MODE_LOCAL, WAKE_MODE_NETWORK}) + public @interface WakeMode {} + /** + * A wake mode that will not cause the player to hold any locks. + * + *

This is suitable for applications that do not play media with the screen off. + */ + public static final int WAKE_MODE_NONE = 0; + /** + * A wake mode that will cause the player to hold a {@link android.os.PowerManager.WakeLock} + * during playback. + * + *

This is suitable for applications that play media with the screen off and do not load media + * over wifi. + */ + public static final int WAKE_MODE_LOCAL = 1; + /** + * A wake mode that will cause the player to hold a {@link android.os.PowerManager.WakeLock} and a + * {@link android.net.wifi.WifiManager.WifiLock} during playback. + * + *

This is suitable for applications that play media with the screen off and may load media + * over wifi. + */ + public static final int WAKE_MODE_NETWORK = 2; + + /** + * Track role flags. Possible flag values are {@link #ROLE_FLAG_MAIN}, {@link + * #ROLE_FLAG_ALTERNATE}, {@link #ROLE_FLAG_SUPPLEMENTARY}, {@link #ROLE_FLAG_COMMENTARY}, {@link + * #ROLE_FLAG_DUB}, {@link #ROLE_FLAG_EMERGENCY}, {@link #ROLE_FLAG_CAPTION}, {@link + * #ROLE_FLAG_SUBTITLE}, {@link #ROLE_FLAG_SIGN}, {@link #ROLE_FLAG_DESCRIBES_VIDEO}, {@link + * #ROLE_FLAG_DESCRIBES_MUSIC_AND_SOUND}, {@link #ROLE_FLAG_ENHANCED_DIALOG_INTELLIGIBILITY}, + * {@link #ROLE_FLAG_TRANSCRIBES_DIALOG} and {@link #ROLE_FLAG_EASY_TO_READ}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = { + ROLE_FLAG_MAIN, + ROLE_FLAG_ALTERNATE, + ROLE_FLAG_SUPPLEMENTARY, + ROLE_FLAG_COMMENTARY, + ROLE_FLAG_DUB, + ROLE_FLAG_EMERGENCY, + ROLE_FLAG_CAPTION, + ROLE_FLAG_SUBTITLE, + ROLE_FLAG_SIGN, + ROLE_FLAG_DESCRIBES_VIDEO, + ROLE_FLAG_DESCRIBES_MUSIC_AND_SOUND, + ROLE_FLAG_ENHANCED_DIALOG_INTELLIGIBILITY, + ROLE_FLAG_TRANSCRIBES_DIALOG, + ROLE_FLAG_EASY_TO_READ + }) + public @interface RoleFlags {} + /** Indicates a main track. */ + public static final int ROLE_FLAG_MAIN = 1; + /** + * Indicates an alternate track. For example a video track recorded from an different view point + * than the main track(s). + */ + public static final int ROLE_FLAG_ALTERNATE = 1 << 1; + /** + * Indicates a supplementary track, meaning the track has lower importance than the main track(s). + * For example a video track that provides a visual accompaniment to a main audio track. + */ + public static final int ROLE_FLAG_SUPPLEMENTARY = 1 << 2; + /** Indicates the track contains commentary, for example from the director. */ + public static final int ROLE_FLAG_COMMENTARY = 1 << 3; + /** + * Indicates the track is in a different language from the original, for example dubbed audio or + * translated captions. + */ + public static final int ROLE_FLAG_DUB = 1 << 4; + /** Indicates the track contains information about a current emergency. */ + public static final int ROLE_FLAG_EMERGENCY = 1 << 5; + /** + * Indicates the track contains captions. This flag may be set on video tracks to indicate the + * presence of burned in captions. + */ + public static final int ROLE_FLAG_CAPTION = 1 << 6; + /** + * Indicates the track contains subtitles. This flag may be set on video tracks to indicate the + * presence of burned in subtitles. + */ + public static final int ROLE_FLAG_SUBTITLE = 1 << 7; + /** Indicates the track contains a visual sign-language interpretation of an audio track. */ + public static final int ROLE_FLAG_SIGN = 1 << 8; + /** Indicates the track contains an audio or textual description of a video track. */ + public static final int ROLE_FLAG_DESCRIBES_VIDEO = 1 << 9; + /** Indicates the track contains a textual description of music and sound. */ + public static final int ROLE_FLAG_DESCRIBES_MUSIC_AND_SOUND = 1 << 10; + /** Indicates the track is designed for improved intelligibility of dialogue. */ + public static final int ROLE_FLAG_ENHANCED_DIALOG_INTELLIGIBILITY = 1 << 11; + /** Indicates the track contains a transcription of spoken dialog. */ + public static final int ROLE_FLAG_TRANSCRIBES_DIALOG = 1 << 12; + /** Indicates the track contains a text that has been edited for ease of reading. */ + public static final int ROLE_FLAG_EASY_TO_READ = 1 << 13; + + /** + * Converts a time in microseconds to the corresponding time in milliseconds, preserving + * {@link #TIME_UNSET} and {@link #TIME_END_OF_SOURCE} values. + * + * @param timeUs The time in microseconds. + * @return The corresponding time in milliseconds. + */ + public static long usToMs(long timeUs) { + return (timeUs == TIME_UNSET || timeUs == TIME_END_OF_SOURCE) ? timeUs : (timeUs / 1000); + } + + /** + * Converts a time in milliseconds to the corresponding time in microseconds, preserving + * {@link #TIME_UNSET} values and {@link #TIME_END_OF_SOURCE} values. + * + * @param timeMs The time in milliseconds. + * @return The corresponding time in microseconds. + */ + public static long msToUs(long timeMs) { + return (timeMs == TIME_UNSET || timeMs == TIME_END_OF_SOURCE) ? timeMs : (timeMs * 1000); + } + + /** + * Returns a newly generated audio session identifier, or {@link AudioManager#ERROR} if an error + * occurred in which case audio playback may fail. + * + * @see AudioManager#generateAudioSessionId() + */ + @TargetApi(21) + public static int generateAudioSessionIdV21(Context context) { + return ((AudioManager) context.getSystemService(Context.AUDIO_SERVICE)) + .generateAudioSessionId(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ControlDispatcher.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ControlDispatcher.java new file mode 100644 index 0000000000..a23b44e685 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ControlDispatcher.java @@ -0,0 +1,75 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.RepeatMode; + +/** + * Dispatches operations to the {@link Player}. + *

+ * Implementations may choose to suppress (e.g. prevent playback from resuming if audio focus is + * denied) or modify (e.g. change the seek position to prevent a user from seeking past a + * non-skippable advert) operations. + */ +public interface ControlDispatcher { + + /** + * Dispatches a {@link Player#setPlayWhenReady(boolean)} operation. + * + * @param player The {@link Player} to which the operation should be dispatched. + * @param playWhenReady Whether playback should proceed when ready. + * @return True if the operation was dispatched. False if suppressed. + */ + boolean dispatchSetPlayWhenReady(Player player, boolean playWhenReady); + + /** + * Dispatches a {@link Player#seekTo(int, long)} operation. + * + * @param player The {@link Player} to which the operation should be dispatched. + * @param windowIndex The index of the window. + * @param positionMs The seek position in the specified window, or {@link C#TIME_UNSET} to seek to + * the window's default position. + * @return True if the operation was dispatched. False if suppressed. + */ + boolean dispatchSeekTo(Player player, int windowIndex, long positionMs); + + /** + * Dispatches a {@link Player#setRepeatMode(int)} operation. + * + * @param player The {@link Player} to which the operation should be dispatched. + * @param repeatMode The repeat mode. + * @return True if the operation was dispatched. False if suppressed. + */ + boolean dispatchSetRepeatMode(Player player, @RepeatMode int repeatMode); + + /** + * Dispatches a {@link Player#setShuffleModeEnabled(boolean)} operation. + * + * @param player The {@link Player} to which the operation should be dispatched. + * @param shuffleModeEnabled Whether shuffling is enabled. + * @return True if the operation was dispatched. False if suppressed. + */ + boolean dispatchSetShuffleModeEnabled(Player player, boolean shuffleModeEnabled); + + /** + * Dispatches a {@link Player#stop()} operation. + * + * @param player The {@link Player} to which the operation should be dispatched. + * @param reset Whether the player should be reset. + * @return True if the operation was dispatched. False if suppressed. + */ + boolean dispatchStop(Player player, boolean reset); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultControlDispatcher.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultControlDispatcher.java new file mode 100644 index 0000000000..32fa0edf6e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultControlDispatcher.java @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.RepeatMode; + +/** + * Default {@link ControlDispatcher} that dispatches all operations to the player without + * modification. + */ +public class DefaultControlDispatcher implements ControlDispatcher { + + @Override + public boolean dispatchSetPlayWhenReady(Player player, boolean playWhenReady) { + player.setPlayWhenReady(playWhenReady); + return true; + } + + @Override + public boolean dispatchSeekTo(Player player, int windowIndex, long positionMs) { + player.seekTo(windowIndex, positionMs); + return true; + } + + @Override + public boolean dispatchSetRepeatMode(Player player, @RepeatMode int repeatMode) { + player.setRepeatMode(repeatMode); + return true; + } + + @Override + public boolean dispatchSetShuffleModeEnabled(Player player, boolean shuffleModeEnabled) { + player.setShuffleModeEnabled(shuffleModeEnabled); + return true; + } + + @Override + public boolean dispatchStop(Player player, boolean reset) { + player.stop(reset); + return true; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultLoadControl.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultLoadControl.java new file mode 100644 index 0000000000..ad5350a722 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultLoadControl.java @@ -0,0 +1,473 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultAllocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * The default {@link LoadControl} implementation. + */ +public class DefaultLoadControl implements LoadControl { + + /** + * The default minimum duration of media that the player will attempt to ensure is buffered at all + * times, in milliseconds. This value is only applied to playbacks without video. + */ + public static final int DEFAULT_MIN_BUFFER_MS = 15000; + + /** + * The default maximum duration of media that the player will attempt to buffer, in milliseconds. + * For playbacks with video, this is also the default minimum duration of media that the player + * will attempt to ensure is buffered. + */ + public static final int DEFAULT_MAX_BUFFER_MS = 50000; + + /** + * The default duration of media that must be buffered for playback to start or resume following a + * user action such as a seek, in milliseconds. + */ + public static final int DEFAULT_BUFFER_FOR_PLAYBACK_MS = 2500; + + /** + * The default duration of media that must be buffered for playback to resume after a rebuffer, in + * milliseconds. A rebuffer is defined to be caused by buffer depletion rather than a user action. + */ + public static final int DEFAULT_BUFFER_FOR_PLAYBACK_AFTER_REBUFFER_MS = 5000; + + /** + * The default target buffer size in bytes. The value ({@link C#LENGTH_UNSET}) means that the load + * control will calculate the target buffer size based on the selected tracks. + */ + public static final int DEFAULT_TARGET_BUFFER_BYTES = C.LENGTH_UNSET; + + /** The default prioritization of buffer time constraints over size constraints. */ + public static final boolean DEFAULT_PRIORITIZE_TIME_OVER_SIZE_THRESHOLDS = true; + + /** The default back buffer duration in milliseconds. */ + public static final int DEFAULT_BACK_BUFFER_DURATION_MS = 0; + + /** The default for whether the back buffer is retained from the previous keyframe. */ + public static final boolean DEFAULT_RETAIN_BACK_BUFFER_FROM_KEYFRAME = false; + + /** A default size in bytes for a video buffer. */ + public static final int DEFAULT_VIDEO_BUFFER_SIZE = 500 * C.DEFAULT_BUFFER_SEGMENT_SIZE; + + /** A default size in bytes for an audio buffer. */ + public static final int DEFAULT_AUDIO_BUFFER_SIZE = 54 * C.DEFAULT_BUFFER_SEGMENT_SIZE; + + /** A default size in bytes for a text buffer. */ + public static final int DEFAULT_TEXT_BUFFER_SIZE = 2 * C.DEFAULT_BUFFER_SEGMENT_SIZE; + + /** A default size in bytes for a metadata buffer. */ + public static final int DEFAULT_METADATA_BUFFER_SIZE = 2 * C.DEFAULT_BUFFER_SEGMENT_SIZE; + + /** A default size in bytes for a camera motion buffer. */ + public static final int DEFAULT_CAMERA_MOTION_BUFFER_SIZE = 2 * C.DEFAULT_BUFFER_SEGMENT_SIZE; + + /** A default size in bytes for a muxed buffer (e.g. containing video, audio and text). */ + public static final int DEFAULT_MUXED_BUFFER_SIZE = + DEFAULT_VIDEO_BUFFER_SIZE + DEFAULT_AUDIO_BUFFER_SIZE + DEFAULT_TEXT_BUFFER_SIZE; + + /** Builder for {@link DefaultLoadControl}. */ + public static final class Builder { + + private DefaultAllocator allocator; + private int minBufferAudioMs; + private int minBufferVideoMs; + private int maxBufferMs; + private int bufferForPlaybackMs; + private int bufferForPlaybackAfterRebufferMs; + private int targetBufferBytes; + private boolean prioritizeTimeOverSizeThresholds; + private int backBufferDurationMs; + private boolean retainBackBufferFromKeyframe; + private boolean createDefaultLoadControlCalled; + + /** Constructs a new instance. */ + public Builder() { + minBufferAudioMs = DEFAULT_MIN_BUFFER_MS; + minBufferVideoMs = DEFAULT_MAX_BUFFER_MS; + maxBufferMs = DEFAULT_MAX_BUFFER_MS; + bufferForPlaybackMs = DEFAULT_BUFFER_FOR_PLAYBACK_MS; + bufferForPlaybackAfterRebufferMs = DEFAULT_BUFFER_FOR_PLAYBACK_AFTER_REBUFFER_MS; + targetBufferBytes = DEFAULT_TARGET_BUFFER_BYTES; + prioritizeTimeOverSizeThresholds = DEFAULT_PRIORITIZE_TIME_OVER_SIZE_THRESHOLDS; + backBufferDurationMs = DEFAULT_BACK_BUFFER_DURATION_MS; + retainBackBufferFromKeyframe = DEFAULT_RETAIN_BACK_BUFFER_FROM_KEYFRAME; + } + + /** + * Sets the {@link DefaultAllocator} used by the loader. + * + * @param allocator The {@link DefaultAllocator}. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #createDefaultLoadControl()} has already been called. + */ + public Builder setAllocator(DefaultAllocator allocator) { + Assertions.checkState(!createDefaultLoadControlCalled); + this.allocator = allocator; + return this; + } + + /** + * Sets the buffer duration parameters. + * + * @param minBufferMs The minimum duration of media that the player will attempt to ensure is + * buffered at all times, in milliseconds. + * @param maxBufferMs The maximum duration of media that the player will attempt to buffer, in + * milliseconds. + * @param bufferForPlaybackMs The duration of media that must be buffered for playback to start + * or resume following a user action such as a seek, in milliseconds. + * @param bufferForPlaybackAfterRebufferMs The default duration of media that must be buffered + * for playback to resume after a rebuffer, in milliseconds. A rebuffer is defined to be + * caused by buffer depletion rather than a user action. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #createDefaultLoadControl()} has already been called. + */ + public Builder setBufferDurationsMs( + int minBufferMs, + int maxBufferMs, + int bufferForPlaybackMs, + int bufferForPlaybackAfterRebufferMs) { + Assertions.checkState(!createDefaultLoadControlCalled); + assertGreaterOrEqual(bufferForPlaybackMs, 0, "bufferForPlaybackMs", "0"); + assertGreaterOrEqual( + bufferForPlaybackAfterRebufferMs, 0, "bufferForPlaybackAfterRebufferMs", "0"); + assertGreaterOrEqual(minBufferMs, bufferForPlaybackMs, "minBufferMs", "bufferForPlaybackMs"); + assertGreaterOrEqual( + minBufferMs, + bufferForPlaybackAfterRebufferMs, + "minBufferMs", + "bufferForPlaybackAfterRebufferMs"); + assertGreaterOrEqual(maxBufferMs, minBufferMs, "maxBufferMs", "minBufferMs"); + this.minBufferAudioMs = minBufferMs; + this.minBufferVideoMs = minBufferMs; + this.maxBufferMs = maxBufferMs; + this.bufferForPlaybackMs = bufferForPlaybackMs; + this.bufferForPlaybackAfterRebufferMs = bufferForPlaybackAfterRebufferMs; + return this; + } + + /** + * Sets the target buffer size in bytes. If set to {@link C#LENGTH_UNSET}, the target buffer + * size will be calculated based on the selected tracks. + * + * @param targetBufferBytes The target buffer size in bytes. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #createDefaultLoadControl()} has already been called. + */ + public Builder setTargetBufferBytes(int targetBufferBytes) { + Assertions.checkState(!createDefaultLoadControlCalled); + this.targetBufferBytes = targetBufferBytes; + return this; + } + + /** + * Sets whether the load control prioritizes buffer time constraints over buffer size + * constraints. + * + * @param prioritizeTimeOverSizeThresholds Whether the load control prioritizes buffer time + * constraints over buffer size constraints. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #createDefaultLoadControl()} has already been called. + */ + public Builder setPrioritizeTimeOverSizeThresholds(boolean prioritizeTimeOverSizeThresholds) { + Assertions.checkState(!createDefaultLoadControlCalled); + this.prioritizeTimeOverSizeThresholds = prioritizeTimeOverSizeThresholds; + return this; + } + + /** + * Sets the back buffer duration, and whether the back buffer is retained from the previous + * keyframe. + * + * @param backBufferDurationMs The back buffer duration in milliseconds. + * @param retainBackBufferFromKeyframe Whether the back buffer is retained from the previous + * keyframe. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #createDefaultLoadControl()} has already been called. + */ + public Builder setBackBuffer(int backBufferDurationMs, boolean retainBackBufferFromKeyframe) { + Assertions.checkState(!createDefaultLoadControlCalled); + assertGreaterOrEqual(backBufferDurationMs, 0, "backBufferDurationMs", "0"); + this.backBufferDurationMs = backBufferDurationMs; + this.retainBackBufferFromKeyframe = retainBackBufferFromKeyframe; + return this; + } + + /** Creates a {@link DefaultLoadControl}. */ + public DefaultLoadControl createDefaultLoadControl() { + Assertions.checkState(!createDefaultLoadControlCalled); + createDefaultLoadControlCalled = true; + if (allocator == null) { + allocator = new DefaultAllocator(/* trimOnReset= */ true, C.DEFAULT_BUFFER_SEGMENT_SIZE); + } + return new DefaultLoadControl( + allocator, + minBufferAudioMs, + minBufferVideoMs, + maxBufferMs, + bufferForPlaybackMs, + bufferForPlaybackAfterRebufferMs, + targetBufferBytes, + prioritizeTimeOverSizeThresholds, + backBufferDurationMs, + retainBackBufferFromKeyframe); + } + } + + private final DefaultAllocator allocator; + + private final long minBufferAudioUs; + private final long minBufferVideoUs; + private final long maxBufferUs; + private final long bufferForPlaybackUs; + private final long bufferForPlaybackAfterRebufferUs; + private final int targetBufferBytesOverwrite; + private final boolean prioritizeTimeOverSizeThresholds; + private final long backBufferDurationUs; + private final boolean retainBackBufferFromKeyframe; + + private int targetBufferSize; + private boolean isBuffering; + private boolean hasVideo; + + /** Constructs a new instance, using the {@code DEFAULT_*} constants defined in this class. */ + @SuppressWarnings("deprecation") + public DefaultLoadControl() { + this(new DefaultAllocator(true, C.DEFAULT_BUFFER_SEGMENT_SIZE)); + } + + /** @deprecated Use {@link Builder} instead. */ + @Deprecated + public DefaultLoadControl(DefaultAllocator allocator) { + this( + allocator, + /* minBufferAudioMs= */ DEFAULT_MIN_BUFFER_MS, + /* minBufferVideoMs= */ DEFAULT_MAX_BUFFER_MS, + DEFAULT_MAX_BUFFER_MS, + DEFAULT_BUFFER_FOR_PLAYBACK_MS, + DEFAULT_BUFFER_FOR_PLAYBACK_AFTER_REBUFFER_MS, + DEFAULT_TARGET_BUFFER_BYTES, + DEFAULT_PRIORITIZE_TIME_OVER_SIZE_THRESHOLDS, + DEFAULT_BACK_BUFFER_DURATION_MS, + DEFAULT_RETAIN_BACK_BUFFER_FROM_KEYFRAME); + } + + /** @deprecated Use {@link Builder} instead. */ + @Deprecated + public DefaultLoadControl( + DefaultAllocator allocator, + int minBufferMs, + int maxBufferMs, + int bufferForPlaybackMs, + int bufferForPlaybackAfterRebufferMs, + int targetBufferBytes, + boolean prioritizeTimeOverSizeThresholds) { + this( + allocator, + /* minBufferAudioMs= */ minBufferMs, + /* minBufferVideoMs= */ minBufferMs, + maxBufferMs, + bufferForPlaybackMs, + bufferForPlaybackAfterRebufferMs, + targetBufferBytes, + prioritizeTimeOverSizeThresholds, + DEFAULT_BACK_BUFFER_DURATION_MS, + DEFAULT_RETAIN_BACK_BUFFER_FROM_KEYFRAME); + } + + protected DefaultLoadControl( + DefaultAllocator allocator, + int minBufferAudioMs, + int minBufferVideoMs, + int maxBufferMs, + int bufferForPlaybackMs, + int bufferForPlaybackAfterRebufferMs, + int targetBufferBytes, + boolean prioritizeTimeOverSizeThresholds, + int backBufferDurationMs, + boolean retainBackBufferFromKeyframe) { + assertGreaterOrEqual(bufferForPlaybackMs, 0, "bufferForPlaybackMs", "0"); + assertGreaterOrEqual( + bufferForPlaybackAfterRebufferMs, 0, "bufferForPlaybackAfterRebufferMs", "0"); + assertGreaterOrEqual( + minBufferAudioMs, bufferForPlaybackMs, "minBufferAudioMs", "bufferForPlaybackMs"); + assertGreaterOrEqual( + minBufferVideoMs, bufferForPlaybackMs, "minBufferVideoMs", "bufferForPlaybackMs"); + assertGreaterOrEqual( + minBufferAudioMs, + bufferForPlaybackAfterRebufferMs, + "minBufferAudioMs", + "bufferForPlaybackAfterRebufferMs"); + assertGreaterOrEqual( + minBufferVideoMs, + bufferForPlaybackAfterRebufferMs, + "minBufferVideoMs", + "bufferForPlaybackAfterRebufferMs"); + assertGreaterOrEqual(maxBufferMs, minBufferAudioMs, "maxBufferMs", "minBufferAudioMs"); + assertGreaterOrEqual(maxBufferMs, minBufferVideoMs, "maxBufferMs", "minBufferVideoMs"); + assertGreaterOrEqual(backBufferDurationMs, 0, "backBufferDurationMs", "0"); + + this.allocator = allocator; + this.minBufferAudioUs = C.msToUs(minBufferAudioMs); + this.minBufferVideoUs = C.msToUs(minBufferVideoMs); + this.maxBufferUs = C.msToUs(maxBufferMs); + this.bufferForPlaybackUs = C.msToUs(bufferForPlaybackMs); + this.bufferForPlaybackAfterRebufferUs = C.msToUs(bufferForPlaybackAfterRebufferMs); + this.targetBufferBytesOverwrite = targetBufferBytes; + this.prioritizeTimeOverSizeThresholds = prioritizeTimeOverSizeThresholds; + this.backBufferDurationUs = C.msToUs(backBufferDurationMs); + this.retainBackBufferFromKeyframe = retainBackBufferFromKeyframe; + } + + @Override + public void onPrepared() { + reset(false); + } + + @Override + public void onTracksSelected(Renderer[] renderers, TrackGroupArray trackGroups, + TrackSelectionArray trackSelections) { + hasVideo = hasVideo(renderers, trackSelections); + targetBufferSize = + targetBufferBytesOverwrite == C.LENGTH_UNSET + ? calculateTargetBufferSize(renderers, trackSelections) + : targetBufferBytesOverwrite; + allocator.setTargetBufferSize(targetBufferSize); + } + + @Override + public void onStopped() { + reset(true); + } + + @Override + public void onReleased() { + reset(true); + } + + @Override + public Allocator getAllocator() { + return allocator; + } + + @Override + public long getBackBufferDurationUs() { + return backBufferDurationUs; + } + + @Override + public boolean retainBackBufferFromKeyframe() { + return retainBackBufferFromKeyframe; + } + + @Override + public boolean shouldContinueLoading(long bufferedDurationUs, float playbackSpeed) { + boolean targetBufferSizeReached = allocator.getTotalBytesAllocated() >= targetBufferSize; + long minBufferUs = hasVideo ? minBufferVideoUs : minBufferAudioUs; + if (playbackSpeed > 1) { + // The playback speed is faster than real time, so scale up the minimum required media + // duration to keep enough media buffered for a playout duration of minBufferUs. + long mediaDurationMinBufferUs = + Util.getMediaDurationForPlayoutDuration(minBufferUs, playbackSpeed); + minBufferUs = Math.min(mediaDurationMinBufferUs, maxBufferUs); + } + if (bufferedDurationUs < minBufferUs) { + isBuffering = prioritizeTimeOverSizeThresholds || !targetBufferSizeReached; + } else if (bufferedDurationUs >= maxBufferUs || targetBufferSizeReached) { + isBuffering = false; + } // Else don't change the buffering state + return isBuffering; + } + + @Override + public boolean shouldStartPlayback( + long bufferedDurationUs, float playbackSpeed, boolean rebuffering) { + bufferedDurationUs = Util.getPlayoutDurationForMediaDuration(bufferedDurationUs, playbackSpeed); + long minBufferDurationUs = rebuffering ? bufferForPlaybackAfterRebufferUs : bufferForPlaybackUs; + return minBufferDurationUs <= 0 + || bufferedDurationUs >= minBufferDurationUs + || (!prioritizeTimeOverSizeThresholds + && allocator.getTotalBytesAllocated() >= targetBufferSize); + } + + /** + * Calculate target buffer size in bytes based on the selected tracks. The player will try not to + * exceed this target buffer. Only used when {@code targetBufferBytes} is {@link C#LENGTH_UNSET}. + * + * @param renderers The renderers for which the track were selected. + * @param trackSelectionArray The selected tracks. + * @return The target buffer size in bytes. + */ + protected int calculateTargetBufferSize( + Renderer[] renderers, TrackSelectionArray trackSelectionArray) { + int targetBufferSize = 0; + for (int i = 0; i < renderers.length; i++) { + if (trackSelectionArray.get(i) != null) { + targetBufferSize += getDefaultBufferSize(renderers[i].getTrackType()); + } + } + return targetBufferSize; + } + + private void reset(boolean resetAllocator) { + targetBufferSize = 0; + isBuffering = false; + if (resetAllocator) { + allocator.reset(); + } + } + + private static int getDefaultBufferSize(int trackType) { + switch (trackType) { + case C.TRACK_TYPE_DEFAULT: + return DEFAULT_MUXED_BUFFER_SIZE; + case C.TRACK_TYPE_AUDIO: + return DEFAULT_AUDIO_BUFFER_SIZE; + case C.TRACK_TYPE_VIDEO: + return DEFAULT_VIDEO_BUFFER_SIZE; + case C.TRACK_TYPE_TEXT: + return DEFAULT_TEXT_BUFFER_SIZE; + case C.TRACK_TYPE_METADATA: + return DEFAULT_METADATA_BUFFER_SIZE; + case C.TRACK_TYPE_CAMERA_MOTION: + return DEFAULT_CAMERA_MOTION_BUFFER_SIZE; + case C.TRACK_TYPE_NONE: + return 0; + default: + throw new IllegalArgumentException(); + } + } + + private static boolean hasVideo(Renderer[] renderers, TrackSelectionArray trackSelectionArray) { + for (int i = 0; i < renderers.length; i++) { + if (renderers[i].getTrackType() == C.TRACK_TYPE_VIDEO && trackSelectionArray.get(i) != null) { + return true; + } + } + return false; + } + + private static void assertGreaterOrEqual(int value1, int value2, String name1, String name2) { + Assertions.checkArgument(value1 >= value2, name1 + " cannot be less than " + name2); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultMediaClock.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultMediaClock.java new file mode 100644 index 0000000000..9967bfeb9e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultMediaClock.java @@ -0,0 +1,197 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Clock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MediaClock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.StandaloneMediaClock; + +/** + * Default {@link MediaClock} which uses a renderer media clock and falls back to a + * {@link StandaloneMediaClock} if necessary. + */ +/* package */ final class DefaultMediaClock implements MediaClock { + + /** + * Listener interface to be notified of changes to the active playback parameters. + */ + public interface PlaybackParameterListener { + + /** + * Called when the active playback parameters changed. Will not be called for {@link + * #setPlaybackParameters(PlaybackParameters)}. + * + * @param newPlaybackParameters The newly active {@link PlaybackParameters}. + */ + void onPlaybackParametersChanged(PlaybackParameters newPlaybackParameters); + } + + private final StandaloneMediaClock standaloneClock; + private final PlaybackParameterListener listener; + + @Nullable private Renderer rendererClockSource; + @Nullable private MediaClock rendererClock; + private boolean isUsingStandaloneClock; + private boolean standaloneClockIsStarted; + + /** + * Creates a new instance with listener for playback parameter changes and a {@link Clock} to use + * for the standalone clock implementation. + * + * @param listener A {@link PlaybackParameterListener} to listen for playback parameter + * changes. + * @param clock A {@link Clock}. + */ + public DefaultMediaClock(PlaybackParameterListener listener, Clock clock) { + this.listener = listener; + this.standaloneClock = new StandaloneMediaClock(clock); + isUsingStandaloneClock = true; + } + + /** + * Starts the standalone fallback clock. + */ + public void start() { + standaloneClockIsStarted = true; + standaloneClock.start(); + } + + /** + * Stops the standalone fallback clock. + */ + public void stop() { + standaloneClockIsStarted = false; + standaloneClock.stop(); + } + + /** + * Resets the position of the standalone fallback clock. + * + * @param positionUs The position to set in microseconds. + */ + public void resetPosition(long positionUs) { + standaloneClock.resetPosition(positionUs); + } + + /** + * Notifies the media clock that a renderer has been enabled. Starts using the media clock of the + * provided renderer if available. + * + * @param renderer The renderer which has been enabled. + * @throws ExoPlaybackException If the renderer provides a media clock and another renderer media + * clock is already provided. + */ + public void onRendererEnabled(Renderer renderer) throws ExoPlaybackException { + MediaClock rendererMediaClock = renderer.getMediaClock(); + if (rendererMediaClock != null && rendererMediaClock != rendererClock) { + if (rendererClock != null) { + throw ExoPlaybackException.createForUnexpected( + new IllegalStateException("Multiple renderer media clocks enabled.")); + } + this.rendererClock = rendererMediaClock; + this.rendererClockSource = renderer; + rendererClock.setPlaybackParameters(standaloneClock.getPlaybackParameters()); + } + } + + /** + * Notifies the media clock that a renderer has been disabled. Stops using the media clock of this + * renderer if used. + * + * @param renderer The renderer which has been disabled. + */ + public void onRendererDisabled(Renderer renderer) { + if (renderer == rendererClockSource) { + this.rendererClock = null; + this.rendererClockSource = null; + isUsingStandaloneClock = true; + } + } + + /** + * Syncs internal clock if needed and returns current clock position in microseconds. + * + * @param isReadingAhead Whether the renderers are reading ahead. + */ + public long syncAndGetPositionUs(boolean isReadingAhead) { + syncClocks(isReadingAhead); + return getPositionUs(); + } + + // MediaClock implementation. + + @Override + public long getPositionUs() { + return isUsingStandaloneClock ? standaloneClock.getPositionUs() : rendererClock.getPositionUs(); + } + + @Override + public void setPlaybackParameters(PlaybackParameters playbackParameters) { + if (rendererClock != null) { + rendererClock.setPlaybackParameters(playbackParameters); + playbackParameters = rendererClock.getPlaybackParameters(); + } + standaloneClock.setPlaybackParameters(playbackParameters); + } + + @Override + public PlaybackParameters getPlaybackParameters() { + return rendererClock != null + ? rendererClock.getPlaybackParameters() + : standaloneClock.getPlaybackParameters(); + } + + private void syncClocks(boolean isReadingAhead) { + if (shouldUseStandaloneClock(isReadingAhead)) { + isUsingStandaloneClock = true; + if (standaloneClockIsStarted) { + standaloneClock.start(); + } + return; + } + long rendererClockPositionUs = rendererClock.getPositionUs(); + if (isUsingStandaloneClock) { + // Ensure enabling the renderer clock doesn't jump backwards in time. + if (rendererClockPositionUs < standaloneClock.getPositionUs()) { + standaloneClock.stop(); + return; + } + isUsingStandaloneClock = false; + if (standaloneClockIsStarted) { + standaloneClock.start(); + } + } + // Continuously sync stand-alone clock to renderer clock so that it can take over if needed. + standaloneClock.resetPosition(rendererClockPositionUs); + PlaybackParameters playbackParameters = rendererClock.getPlaybackParameters(); + if (!playbackParameters.equals(standaloneClock.getPlaybackParameters())) { + standaloneClock.setPlaybackParameters(playbackParameters); + listener.onPlaybackParametersChanged(playbackParameters); + } + } + + private boolean shouldUseStandaloneClock(boolean isReadingAhead) { + // Use the standalone clock if the clock providing renderer is not set or has ended. Also use + // the standalone clock if the renderer is not ready and we have finished reading the stream or + // are reading ahead to avoid getting stuck if tracks in the current period have uneven + // durations. See: https://github.com/google/ExoPlayer/issues/1874. + return rendererClockSource == null + || rendererClockSource.isEnded() + || (!rendererClockSource.isReady() + && (isReadingAhead || rendererClockSource.hasReadStreamToEnd())); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultRenderersFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultRenderersFactory.java new file mode 100644 index 0000000000..95fe509ee9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/DefaultRenderersFactory.java @@ -0,0 +1,580 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.content.Context; +import android.media.MediaCodec; +import android.os.Handler; +import android.os.Looper; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioProcessor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioRendererEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.DefaultAudioSink; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.MediaCodecAudioRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.FrameworkMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.TextOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.TextRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.MediaCodecVideoRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoRendererEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical.CameraMotionRenderer; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.lang.reflect.Constructor; +import java.util.ArrayList; + +/** + * Default {@link RenderersFactory} implementation. + */ +public class DefaultRenderersFactory implements RenderersFactory { + + /** + * The default maximum duration for which a video renderer can attempt to seamlessly join an + * ongoing playback. + */ + public static final long DEFAULT_ALLOWED_VIDEO_JOINING_TIME_MS = 5000; + + /** + * Modes for using extension renderers. One of {@link #EXTENSION_RENDERER_MODE_OFF}, {@link + * #EXTENSION_RENDERER_MODE_ON} or {@link #EXTENSION_RENDERER_MODE_PREFER}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({EXTENSION_RENDERER_MODE_OFF, EXTENSION_RENDERER_MODE_ON, EXTENSION_RENDERER_MODE_PREFER}) + public @interface ExtensionRendererMode {} + /** + * Do not allow use of extension renderers. + */ + public static final int EXTENSION_RENDERER_MODE_OFF = 0; + /** + * Allow use of extension renderers. Extension renderers are indexed after core renderers of the + * same type. A {@link TrackSelector} that prefers the first suitable renderer will therefore + * prefer to use a core renderer to an extension renderer in the case that both are able to play + * a given track. + */ + public static final int EXTENSION_RENDERER_MODE_ON = 1; + /** + * Allow use of extension renderers. Extension renderers are indexed before core renderers of the + * same type. A {@link TrackSelector} that prefers the first suitable renderer will therefore + * prefer to use an extension renderer to a core renderer in the case that both are able to play + * a given track. + */ + public static final int EXTENSION_RENDERER_MODE_PREFER = 2; + + private static final String TAG = "DefaultRenderersFactory"; + + protected static final int MAX_DROPPED_VIDEO_FRAME_COUNT_TO_NOTIFY = 50; + + private final Context context; + @Nullable private DrmSessionManager drmSessionManager; + @ExtensionRendererMode private int extensionRendererMode; + private long allowedVideoJoiningTimeMs; + private boolean playClearSamplesWithoutKeys; + private boolean enableDecoderFallback; + private MediaCodecSelector mediaCodecSelector; + + /** @param context A {@link Context}. */ + public DefaultRenderersFactory(Context context) { + this.context = context; + extensionRendererMode = EXTENSION_RENDERER_MODE_OFF; + allowedVideoJoiningTimeMs = DEFAULT_ALLOWED_VIDEO_JOINING_TIME_MS; + mediaCodecSelector = MediaCodecSelector.DEFAULT; + } + + /** + * @deprecated Use {@link #DefaultRenderersFactory(Context)} and pass {@link DrmSessionManager} + * directly to {@link SimpleExoPlayer.Builder}. + */ + @Deprecated + @SuppressWarnings("deprecation") + public DefaultRenderersFactory( + Context context, @Nullable DrmSessionManager drmSessionManager) { + this(context, drmSessionManager, EXTENSION_RENDERER_MODE_OFF); + } + + /** + * @deprecated Use {@link #DefaultRenderersFactory(Context)} and {@link + * #setExtensionRendererMode(int)}. + */ + @Deprecated + @SuppressWarnings("deprecation") + public DefaultRenderersFactory( + Context context, @ExtensionRendererMode int extensionRendererMode) { + this(context, extensionRendererMode, DEFAULT_ALLOWED_VIDEO_JOINING_TIME_MS); + } + + /** + * @deprecated Use {@link #DefaultRenderersFactory(Context)} and {@link + * #setExtensionRendererMode(int)}, and pass {@link DrmSessionManager} directly to {@link + * SimpleExoPlayer.Builder}. + */ + @Deprecated + @SuppressWarnings("deprecation") + public DefaultRenderersFactory( + Context context, + @Nullable DrmSessionManager drmSessionManager, + @ExtensionRendererMode int extensionRendererMode) { + this(context, drmSessionManager, extensionRendererMode, DEFAULT_ALLOWED_VIDEO_JOINING_TIME_MS); + } + + /** + * @deprecated Use {@link #DefaultRenderersFactory(Context)}, {@link + * #setExtensionRendererMode(int)} and {@link #setAllowedVideoJoiningTimeMs(long)}. + */ + @Deprecated + @SuppressWarnings("deprecation") + public DefaultRenderersFactory( + Context context, + @ExtensionRendererMode int extensionRendererMode, + long allowedVideoJoiningTimeMs) { + this(context, null, extensionRendererMode, allowedVideoJoiningTimeMs); + } + + /** + * @deprecated Use {@link #DefaultRenderersFactory(Context)}, {@link + * #setExtensionRendererMode(int)} and {@link #setAllowedVideoJoiningTimeMs(long)}, and pass + * {@link DrmSessionManager} directly to {@link SimpleExoPlayer.Builder}. + */ + @Deprecated + public DefaultRenderersFactory( + Context context, + @Nullable DrmSessionManager drmSessionManager, + @ExtensionRendererMode int extensionRendererMode, + long allowedVideoJoiningTimeMs) { + this.context = context; + this.extensionRendererMode = extensionRendererMode; + this.allowedVideoJoiningTimeMs = allowedVideoJoiningTimeMs; + this.drmSessionManager = drmSessionManager; + mediaCodecSelector = MediaCodecSelector.DEFAULT; + } + + /** + * Sets the extension renderer mode, which determines if and how available extension renderers are + * used. Note that extensions must be included in the application build for them to be considered + * available. + * + *

The default value is {@link #EXTENSION_RENDERER_MODE_OFF}. + * + * @param extensionRendererMode The extension renderer mode. + * @return This factory, for convenience. + */ + public DefaultRenderersFactory setExtensionRendererMode( + @ExtensionRendererMode int extensionRendererMode) { + this.extensionRendererMode = extensionRendererMode; + return this; + } + + /** + * Sets whether renderers are permitted to play clear regions of encrypted media prior to having + * obtained the keys necessary to decrypt encrypted regions of the media. For encrypted media that + * starts with a short clear region, this allows playback to begin in parallel with key + * acquisition, which can reduce startup latency. + * + *

The default value is {@code false}. + * + * @param playClearSamplesWithoutKeys Whether renderers are permitted to play clear regions of + * encrypted media prior to having obtained the keys necessary to decrypt encrypted regions of + * the media. + * @return This factory, for convenience. + */ + public DefaultRenderersFactory setPlayClearSamplesWithoutKeys( + boolean playClearSamplesWithoutKeys) { + this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys; + return this; + } + + /** + * Sets whether to enable fallback to lower-priority decoders if decoder initialization fails. + * This may result in using a decoder that is less efficient or slower than the primary decoder. + * + * @param enableDecoderFallback Whether to enable fallback to lower-priority decoders if decoder + * initialization fails. + * @return This factory, for convenience. + */ + public DefaultRenderersFactory setEnableDecoderFallback(boolean enableDecoderFallback) { + this.enableDecoderFallback = enableDecoderFallback; + return this; + } + + /** + * Sets a {@link MediaCodecSelector} for use by {@link MediaCodec} based renderers. + * + *

The default value is {@link MediaCodecSelector#DEFAULT}. + * + * @param mediaCodecSelector The {@link MediaCodecSelector}. + * @return This factory, for convenience. + */ + public DefaultRenderersFactory setMediaCodecSelector(MediaCodecSelector mediaCodecSelector) { + this.mediaCodecSelector = mediaCodecSelector; + return this; + } + + /** + * Sets the maximum duration for which video renderers can attempt to seamlessly join an ongoing + * playback. + * + *

The default value is {@link #DEFAULT_ALLOWED_VIDEO_JOINING_TIME_MS}. + * + * @param allowedVideoJoiningTimeMs The maximum duration for which video renderers can attempt to + * seamlessly join an ongoing playback, in milliseconds. + * @return This factory, for convenience. + */ + public DefaultRenderersFactory setAllowedVideoJoiningTimeMs(long allowedVideoJoiningTimeMs) { + this.allowedVideoJoiningTimeMs = allowedVideoJoiningTimeMs; + return this; + } + + @Override + public Renderer[] createRenderers( + Handler eventHandler, + VideoRendererEventListener videoRendererEventListener, + AudioRendererEventListener audioRendererEventListener, + TextOutput textRendererOutput, + MetadataOutput metadataRendererOutput, + @Nullable DrmSessionManager drmSessionManager) { + if (drmSessionManager == null) { + drmSessionManager = this.drmSessionManager; + } + ArrayList renderersList = new ArrayList<>(); + buildVideoRenderers( + context, + extensionRendererMode, + mediaCodecSelector, + drmSessionManager, + playClearSamplesWithoutKeys, + enableDecoderFallback, + eventHandler, + videoRendererEventListener, + allowedVideoJoiningTimeMs, + renderersList); + buildAudioRenderers( + context, + extensionRendererMode, + mediaCodecSelector, + drmSessionManager, + playClearSamplesWithoutKeys, + enableDecoderFallback, + buildAudioProcessors(), + eventHandler, + audioRendererEventListener, + renderersList); + buildTextRenderers(context, textRendererOutput, eventHandler.getLooper(), + extensionRendererMode, renderersList); + buildMetadataRenderers(context, metadataRendererOutput, eventHandler.getLooper(), + extensionRendererMode, renderersList); + buildCameraMotionRenderers(context, extensionRendererMode, renderersList); + buildMiscellaneousRenderers(context, eventHandler, extensionRendererMode, renderersList); + return renderersList.toArray(new Renderer[0]); + } + + /** + * Builds video renderers for use by the player. + * + * @param context The {@link Context} associated with the player. + * @param extensionRendererMode The extension renderer mode. + * @param mediaCodecSelector A decoder selector. + * @param drmSessionManager An optional {@link DrmSessionManager}. May be null if the player will + * not be used for DRM protected playbacks. + * @param playClearSamplesWithoutKeys Whether renderers are permitted to play clear regions of + * encrypted media prior to having obtained the keys necessary to decrypt encrypted regions of + * the media. + * @param enableDecoderFallback Whether to enable fallback to lower-priority decoders if decoder + * initialization fails. This may result in using a decoder that is slower/less efficient than + * the primary decoder. + * @param eventHandler A handler associated with the main thread's looper. + * @param eventListener An event listener. + * @param allowedVideoJoiningTimeMs The maximum duration for which video renderers can attempt to + * seamlessly join an ongoing playback, in milliseconds. + * @param out An array to which the built renderers should be appended. + */ + protected void buildVideoRenderers( + Context context, + @ExtensionRendererMode int extensionRendererMode, + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + boolean enableDecoderFallback, + Handler eventHandler, + VideoRendererEventListener eventListener, + long allowedVideoJoiningTimeMs, + ArrayList out) { + out.add( + new MediaCodecVideoRenderer( + context, + mediaCodecSelector, + allowedVideoJoiningTimeMs, + drmSessionManager, + playClearSamplesWithoutKeys, + enableDecoderFallback, + eventHandler, + eventListener, + MAX_DROPPED_VIDEO_FRAME_COUNT_TO_NOTIFY)); + + if (extensionRendererMode == EXTENSION_RENDERER_MODE_OFF) { + return; + } + int extensionRendererIndex = out.size(); + if (extensionRendererMode == EXTENSION_RENDERER_MODE_PREFER) { + extensionRendererIndex--; + } + + try { + // Full class names used for constructor args so the LINT rule triggers if any of them move. + // LINT.IfChange + Class clazz = Class.forName("org.mozilla.thirdparty.com.google.android.exoplayer2.ext.vp9.LibvpxVideoRenderer"); + Constructor constructor = + clazz.getConstructor( + long.class, + android.os.Handler.class, + org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoRendererEventListener.class, + int.class); + // LINT.ThenChange(../../../../../../../proguard-rules.txt) + Renderer renderer = + (Renderer) + constructor.newInstance( + allowedVideoJoiningTimeMs, + eventHandler, + eventListener, + MAX_DROPPED_VIDEO_FRAME_COUNT_TO_NOTIFY); + out.add(extensionRendererIndex++, renderer); + Log.i(TAG, "Loaded LibvpxVideoRenderer."); + } catch (ClassNotFoundException e) { + // Expected if the app was built without the extension. + } catch (Exception e) { + // The extension is present, but instantiation failed. + throw new RuntimeException("Error instantiating VP9 extension", e); + } + + try { + // Full class names used for constructor args so the LINT rule triggers if any of them move. + // LINT.IfChange + Class clazz = Class.forName("org.mozilla.thirdparty.com.google.android.exoplayer2.ext.av1.Libgav1VideoRenderer"); + Constructor constructor = + clazz.getConstructor( + long.class, + android.os.Handler.class, + org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoRendererEventListener.class, + int.class); + // LINT.ThenChange(../../../../../../../proguard-rules.txt) + Renderer renderer = + (Renderer) + constructor.newInstance( + allowedVideoJoiningTimeMs, + eventHandler, + eventListener, + MAX_DROPPED_VIDEO_FRAME_COUNT_TO_NOTIFY); + out.add(extensionRendererIndex++, renderer); + Log.i(TAG, "Loaded Libgav1VideoRenderer."); + } catch (ClassNotFoundException e) { + // Expected if the app was built without the extension. + } catch (Exception e) { + // The extension is present, but instantiation failed. + throw new RuntimeException("Error instantiating AV1 extension", e); + } + } + + /** + * Builds audio renderers for use by the player. + * + * @param context The {@link Context} associated with the player. + * @param extensionRendererMode The extension renderer mode. + * @param mediaCodecSelector A decoder selector. + * @param drmSessionManager An optional {@link DrmSessionManager}. May be null if the player will + * not be used for DRM protected playbacks. + * @param playClearSamplesWithoutKeys Whether renderers are permitted to play clear regions of + * encrypted media prior to having obtained the keys necessary to decrypt encrypted regions of + * the media. + * @param enableDecoderFallback Whether to enable fallback to lower-priority decoders if decoder + * initialization fails. This may result in using a decoder that is slower/less efficient than + * the primary decoder. + * @param audioProcessors An array of {@link AudioProcessor}s that will process PCM audio buffers + * before output. May be empty. + * @param eventHandler A handler to use when invoking event listeners and outputs. + * @param eventListener An event listener. + * @param out An array to which the built renderers should be appended. + */ + protected void buildAudioRenderers( + Context context, + @ExtensionRendererMode int extensionRendererMode, + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + boolean enableDecoderFallback, + AudioProcessor[] audioProcessors, + Handler eventHandler, + AudioRendererEventListener eventListener, + ArrayList out) { + out.add( + new MediaCodecAudioRenderer( + context, + mediaCodecSelector, + drmSessionManager, + playClearSamplesWithoutKeys, + enableDecoderFallback, + eventHandler, + eventListener, + new DefaultAudioSink(AudioCapabilities.getCapabilities(context), audioProcessors))); + + if (extensionRendererMode == EXTENSION_RENDERER_MODE_OFF) { + return; + } + int extensionRendererIndex = out.size(); + if (extensionRendererMode == EXTENSION_RENDERER_MODE_PREFER) { + extensionRendererIndex--; + } + + try { + // Full class names used for constructor args so the LINT rule triggers if any of them move. + // LINT.IfChange + Class clazz = Class.forName("org.mozilla.thirdparty.com.google.android.exoplayer2.ext.opus.LibopusAudioRenderer"); + Constructor constructor = + clazz.getConstructor( + android.os.Handler.class, + org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioRendererEventListener.class, + org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioProcessor[].class); + // LINT.ThenChange(../../../../../../../proguard-rules.txt) + Renderer renderer = + (Renderer) constructor.newInstance(eventHandler, eventListener, audioProcessors); + out.add(extensionRendererIndex++, renderer); + Log.i(TAG, "Loaded LibopusAudioRenderer."); + } catch (ClassNotFoundException e) { + // Expected if the app was built without the extension. + } catch (Exception e) { + // The extension is present, but instantiation failed. + throw new RuntimeException("Error instantiating Opus extension", e); + } + + try { + // Full class names used for constructor args so the LINT rule triggers if any of them move. + // LINT.IfChange + Class clazz = Class.forName("org.mozilla.thirdparty.com.google.android.exoplayer2.ext.flac.LibflacAudioRenderer"); + Constructor constructor = + clazz.getConstructor( + android.os.Handler.class, + org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioRendererEventListener.class, + org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioProcessor[].class); + // LINT.ThenChange(../../../../../../../proguard-rules.txt) + Renderer renderer = + (Renderer) constructor.newInstance(eventHandler, eventListener, audioProcessors); + out.add(extensionRendererIndex++, renderer); + Log.i(TAG, "Loaded LibflacAudioRenderer."); + } catch (ClassNotFoundException e) { + // Expected if the app was built without the extension. + } catch (Exception e) { + // The extension is present, but instantiation failed. + throw new RuntimeException("Error instantiating FLAC extension", e); + } + + try { + // Full class names used for constructor args so the LINT rule triggers if any of them move. + // LINT.IfChange + Class clazz = + Class.forName("org.mozilla.thirdparty.com.google.android.exoplayer2.ext.ffmpeg.FfmpegAudioRenderer"); + Constructor constructor = + clazz.getConstructor( + android.os.Handler.class, + org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioRendererEventListener.class, + org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioProcessor[].class); + // LINT.ThenChange(../../../../../../../proguard-rules.txt) + Renderer renderer = + (Renderer) constructor.newInstance(eventHandler, eventListener, audioProcessors); + out.add(extensionRendererIndex++, renderer); + Log.i(TAG, "Loaded FfmpegAudioRenderer."); + } catch (ClassNotFoundException e) { + // Expected if the app was built without the extension. + } catch (Exception e) { + // The extension is present, but instantiation failed. + throw new RuntimeException("Error instantiating FFmpeg extension", e); + } + } + + /** + * Builds text renderers for use by the player. + * + * @param context The {@link Context} associated with the player. + * @param output An output for the renderers. + * @param outputLooper The looper associated with the thread on which the output should be called. + * @param extensionRendererMode The extension renderer mode. + * @param out An array to which the built renderers should be appended. + */ + protected void buildTextRenderers( + Context context, + TextOutput output, + Looper outputLooper, + @ExtensionRendererMode int extensionRendererMode, + ArrayList out) { + out.add(new TextRenderer(output, outputLooper)); + } + + /** + * Builds metadata renderers for use by the player. + * + * @param context The {@link Context} associated with the player. + * @param output An output for the renderers. + * @param outputLooper The looper associated with the thread on which the output should be called. + * @param extensionRendererMode The extension renderer mode. + * @param out An array to which the built renderers should be appended. + */ + protected void buildMetadataRenderers( + Context context, + MetadataOutput output, + Looper outputLooper, + @ExtensionRendererMode int extensionRendererMode, + ArrayList out) { + out.add(new MetadataRenderer(output, outputLooper)); + } + + /** + * Builds camera motion renderers for use by the player. + * + * @param context The {@link Context} associated with the player. + * @param extensionRendererMode The extension renderer mode. + * @param out An array to which the built renderers should be appended. + */ + protected void buildCameraMotionRenderers( + Context context, @ExtensionRendererMode int extensionRendererMode, ArrayList out) { + out.add(new CameraMotionRenderer()); + } + + /** + * Builds any miscellaneous renderers used by the player. + * + * @param context The {@link Context} associated with the player. + * @param eventHandler A handler to use when invoking event listeners and outputs. + * @param extensionRendererMode The extension renderer mode. + * @param out An array to which the built renderers should be appended. + */ + protected void buildMiscellaneousRenderers(Context context, Handler eventHandler, + @ExtensionRendererMode int extensionRendererMode, ArrayList out) { + // Do nothing. + } + + /** + * Builds an array of {@link AudioProcessor}s that will process PCM audio before output. + */ + protected AudioProcessor[] buildAudioProcessors() { + return new AudioProcessor[0]; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlaybackException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlaybackException.java new file mode 100644 index 0000000000..bad5cc7693 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlaybackException.java @@ -0,0 +1,233 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.os.SystemClock; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities.FormatSupport; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Thrown when a non-recoverable playback failure occurs. + */ +public final class ExoPlaybackException extends Exception { + + /** + * The type of source that produced the error. One of {@link #TYPE_SOURCE}, {@link #TYPE_RENDERER} + * {@link #TYPE_UNEXPECTED}, {@link #TYPE_REMOTE} or {@link #TYPE_OUT_OF_MEMORY}. Note that new + * types may be added in the future and error handling should handle unknown type values. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({TYPE_SOURCE, TYPE_RENDERER, TYPE_UNEXPECTED, TYPE_REMOTE, TYPE_OUT_OF_MEMORY}) + public @interface Type {} + /** + * The error occurred loading data from a {@link MediaSource}. + *

+ * Call {@link #getSourceException()} to retrieve the underlying cause. + */ + public static final int TYPE_SOURCE = 0; + /** + * The error occurred in a {@link Renderer}. + *

+ * Call {@link #getRendererException()} to retrieve the underlying cause. + */ + public static final int TYPE_RENDERER = 1; + /** + * The error was an unexpected {@link RuntimeException}. + *

+ * Call {@link #getUnexpectedException()} to retrieve the underlying cause. + */ + public static final int TYPE_UNEXPECTED = 2; + /** + * The error occurred in a remote component. + * + *

Call {@link #getMessage()} to retrieve the message associated with the error. + */ + public static final int TYPE_REMOTE = 3; + /** The error was an {@link OutOfMemoryError}. */ + public static final int TYPE_OUT_OF_MEMORY = 4; + + /** The {@link Type} of the playback failure. */ + @Type public final int type; + + /** + * If {@link #type} is {@link #TYPE_RENDERER}, this is the index of the renderer. + */ + public final int rendererIndex; + + /** + * If {@link #type} is {@link #TYPE_RENDERER}, this is the {@link Format} the renderer was using + * at the time of the exception, or null if the renderer wasn't using a {@link Format}. + */ + @Nullable public final Format rendererFormat; + + /** + * If {@link #type} is {@link #TYPE_RENDERER}, this is the level of {@link FormatSupport} of the + * renderer for {@link #rendererFormat}. If {@link #rendererFormat} is null, this is {@link + * RendererCapabilities#FORMAT_HANDLED}. + */ + @FormatSupport public final int rendererFormatSupport; + + /** The value of {@link SystemClock#elapsedRealtime()} when this exception was created. */ + public final long timestampMs; + + @Nullable private final Throwable cause; + + /** + * Creates an instance of type {@link #TYPE_SOURCE}. + * + * @param cause The cause of the failure. + * @return The created instance. + */ + public static ExoPlaybackException createForSource(IOException cause) { + return new ExoPlaybackException(TYPE_SOURCE, cause); + } + + /** + * Creates an instance of type {@link #TYPE_RENDERER}. + * + * @param cause The cause of the failure. + * @param rendererIndex The index of the renderer in which the failure occurred. + * @param rendererFormat The {@link Format} the renderer was using at the time of the exception, + * or null if the renderer wasn't using a {@link Format}. + * @param rendererFormatSupport The {@link FormatSupport} of the renderer for {@code + * rendererFormat}. Ignored if {@code rendererFormat} is null. + * @return The created instance. + */ + public static ExoPlaybackException createForRenderer( + Exception cause, + int rendererIndex, + @Nullable Format rendererFormat, + @FormatSupport int rendererFormatSupport) { + return new ExoPlaybackException( + TYPE_RENDERER, + cause, + rendererIndex, + rendererFormat, + rendererFormat == null ? RendererCapabilities.FORMAT_HANDLED : rendererFormatSupport); + } + + /** + * Creates an instance of type {@link #TYPE_UNEXPECTED}. + * + * @param cause The cause of the failure. + * @return The created instance. + */ + public static ExoPlaybackException createForUnexpected(RuntimeException cause) { + return new ExoPlaybackException(TYPE_UNEXPECTED, cause); + } + + /** + * Creates an instance of type {@link #TYPE_REMOTE}. + * + * @param message The message associated with the error. + * @return The created instance. + */ + public static ExoPlaybackException createForRemote(String message) { + return new ExoPlaybackException(TYPE_REMOTE, message); + } + + /** + * Creates an instance of type {@link #TYPE_OUT_OF_MEMORY}. + * + * @param cause The cause of the failure. + * @return The created instance. + */ + public static ExoPlaybackException createForOutOfMemoryError(OutOfMemoryError cause) { + return new ExoPlaybackException(TYPE_OUT_OF_MEMORY, cause); + } + + private ExoPlaybackException(@Type int type, Throwable cause) { + this( + type, + cause, + /* rendererIndex= */ C.INDEX_UNSET, + /* rendererFormat= */ null, + /* rendererFormatSupport= */ RendererCapabilities.FORMAT_HANDLED); + } + + private ExoPlaybackException( + @Type int type, + Throwable cause, + int rendererIndex, + @Nullable Format rendererFormat, + @FormatSupport int rendererFormatSupport) { + super(cause); + this.type = type; + this.cause = cause; + this.rendererIndex = rendererIndex; + this.rendererFormat = rendererFormat; + this.rendererFormatSupport = rendererFormatSupport; + timestampMs = SystemClock.elapsedRealtime(); + } + + private ExoPlaybackException(@Type int type, String message) { + super(message); + this.type = type; + rendererIndex = C.INDEX_UNSET; + rendererFormat = null; + rendererFormatSupport = RendererCapabilities.FORMAT_UNSUPPORTED_TYPE; + cause = null; + timestampMs = SystemClock.elapsedRealtime(); + } + + /** + * Retrieves the underlying error when {@link #type} is {@link #TYPE_SOURCE}. + * + * @throws IllegalStateException If {@link #type} is not {@link #TYPE_SOURCE}. + */ + public IOException getSourceException() { + Assertions.checkState(type == TYPE_SOURCE); + return (IOException) Assertions.checkNotNull(cause); + } + + /** + * Retrieves the underlying error when {@link #type} is {@link #TYPE_RENDERER}. + * + * @throws IllegalStateException If {@link #type} is not {@link #TYPE_RENDERER}. + */ + public Exception getRendererException() { + Assertions.checkState(type == TYPE_RENDERER); + return (Exception) Assertions.checkNotNull(cause); + } + + /** + * Retrieves the underlying error when {@link #type} is {@link #TYPE_UNEXPECTED}. + * + * @throws IllegalStateException If {@link #type} is not {@link #TYPE_UNEXPECTED}. + */ + public RuntimeException getUnexpectedException() { + Assertions.checkState(type == TYPE_UNEXPECTED); + return (RuntimeException) Assertions.checkNotNull(cause); + } + + /** + * Retrieves the underlying error when {@link #type} is {@link #TYPE_OUT_OF_MEMORY}. + * + * @throws IllegalStateException If {@link #type} is not {@link #TYPE_OUT_OF_MEMORY}. + */ + public OutOfMemoryError getOutOfMemoryError() { + Assertions.checkState(type == TYPE_OUT_OF_MEMORY); + return (OutOfMemoryError) Assertions.checkNotNull(cause); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayer.java new file mode 100644 index 0000000000..048c1776c9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayer.java @@ -0,0 +1,404 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.content.Context; +import android.os.Looper; +import androidx.annotation.Nullable; +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.analytics.AnalyticsCollector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.MediaCodecAudioRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ClippingMediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ConcatenatingMediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.LoopingMediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MergingMediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ProgressiveMediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SingleSampleMediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.TextRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.DefaultTrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultBandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Clock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.MediaCodecVideoRenderer; + +/** + * An extensible media player that plays {@link MediaSource}s. Instances can be obtained from {@link + * SimpleExoPlayer.Builder} or {@link ExoPlayer.Builder}. + * + *

Player components

+ * + *

ExoPlayer is designed to make few assumptions about (and hence impose few restrictions on) the + * type of the media being played, how and where it is stored, and how it is rendered. Rather than + * implementing the loading and rendering of media directly, ExoPlayer implementations delegate this + * work to components that are injected when a player is created or when it's prepared for playback. + * Components common to all ExoPlayer implementations are: + * + *

+ * + *

An ExoPlayer can be built using the default components provided by the library, but may also + * be built using custom implementations if non-standard behaviors are required. For example a + * custom LoadControl could be injected to change the player's buffering strategy, or a custom + * Renderer could be injected to add support for a video codec not supported natively by Android. + * + *

The concept of injecting components that implement pieces of player functionality is present + * throughout the library. The default component implementations listed above delegate work to + * further injected components. This allows many sub-components to be individually replaced with + * custom implementations. For example the default MediaSource implementations require one or more + * {@link DataSource} factories to be injected via their constructors. By providing a custom factory + * it's possible to load data from a non-standard source, or through a different network stack. + * + *

Threading model

+ * + *

The figure below shows ExoPlayer's threading model. + * + *

ExoPlayer's + * threading model + * + *

+ */ +public interface ExoPlayer extends Player { + + /** + * A builder for {@link ExoPlayer} instances. + * + *

See {@link #Builder(Context, Renderer...)} for the list of default values. + */ + final class Builder { + + private final Renderer[] renderers; + + private Clock clock; + private TrackSelector trackSelector; + private LoadControl loadControl; + private BandwidthMeter bandwidthMeter; + private Looper looper; + private AnalyticsCollector analyticsCollector; + private boolean useLazyPreparation; + private boolean buildCalled; + + /** + * Creates a builder with a list of {@link Renderer Renderers}. + * + *

The builder uses the following default values: + * + *

+ * + * @param context A {@link Context}. + * @param renderers The {@link Renderer Renderers} to be used by the player. + */ + public Builder(Context context, Renderer... renderers) { + this( + renderers, + new DefaultTrackSelector(context), + new DefaultLoadControl(), + DefaultBandwidthMeter.getSingletonInstance(context), + Util.getLooper(), + new AnalyticsCollector(Clock.DEFAULT), + /* useLazyPreparation= */ true, + Clock.DEFAULT); + } + + /** + * Creates a builder with the specified custom components. + * + *

Note that this constructor is only useful if you try to ensure that ExoPlayer's default + * components can be removed by ProGuard or R8. For most components except renderers, there is + * only a marginal benefit of doing that. + * + * @param renderers The {@link Renderer Renderers} to be used by the player. + * @param trackSelector A {@link TrackSelector}. + * @param loadControl A {@link LoadControl}. + * @param bandwidthMeter A {@link BandwidthMeter}. + * @param looper A {@link Looper} that must be used for all calls to the player. + * @param analyticsCollector An {@link AnalyticsCollector}. + * @param useLazyPreparation Whether media sources should be initialized lazily. + * @param clock A {@link Clock}. Should always be {@link Clock#DEFAULT}. + */ + public Builder( + Renderer[] renderers, + TrackSelector trackSelector, + LoadControl loadControl, + BandwidthMeter bandwidthMeter, + Looper looper, + AnalyticsCollector analyticsCollector, + boolean useLazyPreparation, + Clock clock) { + Assertions.checkArgument(renderers.length > 0); + this.renderers = renderers; + this.trackSelector = trackSelector; + this.loadControl = loadControl; + this.bandwidthMeter = bandwidthMeter; + this.looper = looper; + this.analyticsCollector = analyticsCollector; + this.useLazyPreparation = useLazyPreparation; + this.clock = clock; + } + + /** + * Sets the {@link TrackSelector} that will be used by the player. + * + * @param trackSelector A {@link TrackSelector}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setTrackSelector(TrackSelector trackSelector) { + Assertions.checkState(!buildCalled); + this.trackSelector = trackSelector; + return this; + } + + /** + * Sets the {@link LoadControl} that will be used by the player. + * + * @param loadControl A {@link LoadControl}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setLoadControl(LoadControl loadControl) { + Assertions.checkState(!buildCalled); + this.loadControl = loadControl; + return this; + } + + /** + * Sets the {@link BandwidthMeter} that will be used by the player. + * + * @param bandwidthMeter A {@link BandwidthMeter}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setBandwidthMeter(BandwidthMeter bandwidthMeter) { + Assertions.checkState(!buildCalled); + this.bandwidthMeter = bandwidthMeter; + return this; + } + + /** + * Sets the {@link Looper} that must be used for all calls to the player and that is used to + * call listeners on. + * + * @param looper A {@link Looper}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setLooper(Looper looper) { + Assertions.checkState(!buildCalled); + this.looper = looper; + return this; + } + + /** + * Sets the {@link AnalyticsCollector} that will collect and forward all player events. + * + * @param analyticsCollector An {@link AnalyticsCollector}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setAnalyticsCollector(AnalyticsCollector analyticsCollector) { + Assertions.checkState(!buildCalled); + this.analyticsCollector = analyticsCollector; + return this; + } + + /** + * Sets whether media sources should be initialized lazily. + * + *

If false, all initial preparation steps (e.g., manifest loads) happen immediately. If + * true, these initial preparations are triggered only when the player starts buffering the + * media. + * + * @param useLazyPreparation Whether to use lazy preparation. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setUseLazyPreparation(boolean useLazyPreparation) { + Assertions.checkState(!buildCalled); + this.useLazyPreparation = useLazyPreparation; + return this; + } + + /** + * Sets the {@link Clock} that will be used by the player. Should only be set for testing + * purposes. + * + * @param clock A {@link Clock}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + @VisibleForTesting + public Builder setClock(Clock clock) { + Assertions.checkState(!buildCalled); + this.clock = clock; + return this; + } + + /** + * Builds an {@link ExoPlayer} instance. + * + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public ExoPlayer build() { + Assertions.checkState(!buildCalled); + buildCalled = true; + return new ExoPlayerImpl( + renderers, trackSelector, loadControl, bandwidthMeter, clock, looper); + } + } + + /** Returns the {@link Looper} associated with the playback thread. */ + Looper getPlaybackLooper(); + + /** + * Retries a failed or stopped playback. Does nothing if the player has been reset, or if playback + * has not failed or been stopped. + */ + void retry(); + + /** + * Prepares the player to play the provided {@link MediaSource}. Equivalent to {@code + * prepare(mediaSource, true, true)}. + */ + void prepare(MediaSource mediaSource); + + /** + * Prepares the player to play the provided {@link MediaSource}, optionally resetting the playback + * position the default position in the first {@link Timeline.Window}. + * + * @param mediaSource The {@link MediaSource} to play. + * @param resetPosition Whether the playback position should be reset to the default position in + * the first {@link Timeline.Window}. If false, playback will start from the position defined + * by {@link #getCurrentWindowIndex()} and {@link #getCurrentPosition()}. + * @param resetState Whether the timeline, manifest, tracks and track selections should be reset. + * Should be true unless the player is being prepared to play the same media as it was playing + * previously (e.g. if playback failed and is being retried). + */ + void prepare(MediaSource mediaSource, boolean resetPosition, boolean resetState); + + /** + * Creates a message that can be sent to a {@link PlayerMessage.Target}. By default, the message + * will be delivered immediately without blocking on the playback thread. The default {@link + * PlayerMessage#getType()} is 0 and the default {@link PlayerMessage#getPayload()} is null. If a + * position is specified with {@link PlayerMessage#setPosition(long)}, the message will be + * delivered at this position in the current window defined by {@link #getCurrentWindowIndex()}. + * Alternatively, the message can be sent at a specific window using {@link + * PlayerMessage#setPosition(int, long)}. + */ + PlayerMessage createMessage(PlayerMessage.Target target); + + /** + * Sets the parameters that control how seek operations are performed. + * + * @param seekParameters The seek parameters, or {@code null} to use the defaults. + */ + void setSeekParameters(@Nullable SeekParameters seekParameters); + + /** Returns the currently active {@link SeekParameters} of the player. */ + SeekParameters getSeekParameters(); + + /** + * Sets whether the player is allowed to keep holding limited resources such as video decoders, + * even when in the idle state. By doing so, the player may be able to reduce latency when + * starting to play another piece of content for which the same resources are required. + * + *

This mode should be used with caution, since holding limited resources may prevent other + * players of media components from acquiring them. It should only be enabled when both + * of the following conditions are true: + * + *

+ * + *

Note that foreground mode is not useful for switching between content without gaps + * between the playbacks. For this use case {@link #stop} does not need to be called, and simply + * calling {@link #prepare} for the new media will cause limited resources to be retained even if + * foreground mode is not enabled. + * + *

If foreground mode is enabled, it's the application's responsibility to disable it when the + * conditions described above no longer hold. + * + * @param foregroundMode Whether the player is allowed to keep limited resources even when in the + * idle state. + */ + void setForegroundMode(boolean foregroundMode); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerFactory.java new file mode 100644 index 0000000000..a2e89fc3cc --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerFactory.java @@ -0,0 +1,350 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.content.Context; +import android.os.Looper; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.analytics.AnalyticsCollector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.FrameworkMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.DefaultTrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultBandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Clock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** @deprecated Use {@link SimpleExoPlayer.Builder} or {@link ExoPlayer.Builder} instead. */ +@Deprecated +public final class ExoPlayerFactory { + + private ExoPlayerFactory() {} + + /** + * @deprecated Use {@link SimpleExoPlayer.Builder} instead. The {@link DrmSessionManager} cannot + * be passed to {@link SimpleExoPlayer.Builder} and should instead be injected into the {@link + * MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, + TrackSelector trackSelector, + LoadControl loadControl, + @Nullable DrmSessionManager drmSessionManager, + @DefaultRenderersFactory.ExtensionRendererMode int extensionRendererMode) { + RenderersFactory renderersFactory = + new DefaultRenderersFactory(context).setExtensionRendererMode(extensionRendererMode); + return newSimpleInstance( + context, renderersFactory, trackSelector, loadControl, drmSessionManager); + } + + /** + * @deprecated Use {@link SimpleExoPlayer.Builder} instead. The {@link DrmSessionManager} cannot + * be passed to {@link SimpleExoPlayer.Builder} and should instead be injected into the {@link + * MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, + TrackSelector trackSelector, + LoadControl loadControl, + @Nullable DrmSessionManager drmSessionManager, + @DefaultRenderersFactory.ExtensionRendererMode int extensionRendererMode, + long allowedVideoJoiningTimeMs) { + RenderersFactory renderersFactory = + new DefaultRenderersFactory(context) + .setExtensionRendererMode(extensionRendererMode) + .setAllowedVideoJoiningTimeMs(allowedVideoJoiningTimeMs); + return newSimpleInstance( + context, renderersFactory, trackSelector, loadControl, drmSessionManager); + } + + /** @deprecated Use {@link SimpleExoPlayer.Builder} instead. */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance(Context context) { + return newSimpleInstance(context, new DefaultTrackSelector(context)); + } + + /** @deprecated Use {@link SimpleExoPlayer.Builder} instead. */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance(Context context, TrackSelector trackSelector) { + return newSimpleInstance(context, new DefaultRenderersFactory(context), trackSelector); + } + + /** @deprecated Use {@link SimpleExoPlayer.Builder} instead. */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, RenderersFactory renderersFactory, TrackSelector trackSelector) { + return newSimpleInstance(context, renderersFactory, trackSelector, new DefaultLoadControl()); + } + + /** @deprecated Use {@link SimpleExoPlayer.Builder} instead. */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, TrackSelector trackSelector, LoadControl loadControl) { + RenderersFactory renderersFactory = new DefaultRenderersFactory(context); + return newSimpleInstance(context, renderersFactory, trackSelector, loadControl); + } + + /** + * @deprecated Use {@link SimpleExoPlayer.Builder} instead. The {@link DrmSessionManager} cannot + * be passed to {@link SimpleExoPlayer.Builder} and should instead be injected into the {@link + * MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, + TrackSelector trackSelector, + LoadControl loadControl, + @Nullable DrmSessionManager drmSessionManager) { + RenderersFactory renderersFactory = new DefaultRenderersFactory(context); + return newSimpleInstance( + context, renderersFactory, trackSelector, loadControl, drmSessionManager); + } + + /** + * @deprecated Use {@link SimpleExoPlayer.Builder} instead. The {@link DrmSessionManager} cannot + * be passed to {@link SimpleExoPlayer.Builder} and should instead be injected into the {@link + * MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + @Nullable DrmSessionManager drmSessionManager) { + return newSimpleInstance( + context, renderersFactory, trackSelector, new DefaultLoadControl(), drmSessionManager); + } + + /** @deprecated Use {@link SimpleExoPlayer.Builder} instead. */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + LoadControl loadControl) { + return newSimpleInstance( + context, + renderersFactory, + trackSelector, + loadControl, + /* drmSessionManager= */ null, + Util.getLooper()); + } + + /** + * @deprecated Use {@link SimpleExoPlayer.Builder} instead. The {@link DrmSessionManager} cannot + * be passed to {@link SimpleExoPlayer.Builder} and should instead be injected into the {@link + * MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + LoadControl loadControl, + @Nullable DrmSessionManager drmSessionManager) { + return newSimpleInstance( + context, renderersFactory, trackSelector, loadControl, drmSessionManager, Util.getLooper()); + } + + /** + * @deprecated Use {@link SimpleExoPlayer.Builder} instead. The {@link DrmSessionManager} cannot + * be passed to {@link SimpleExoPlayer.Builder} and should instead be injected into the {@link + * MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + LoadControl loadControl, + @Nullable DrmSessionManager drmSessionManager, + BandwidthMeter bandwidthMeter) { + return newSimpleInstance( + context, + renderersFactory, + trackSelector, + loadControl, + drmSessionManager, + bandwidthMeter, + new AnalyticsCollector(Clock.DEFAULT), + Util.getLooper()); + } + + /** + * @deprecated Use {@link SimpleExoPlayer.Builder} instead. The {@link DrmSessionManager} cannot + * be passed to {@link SimpleExoPlayer.Builder} and should instead be injected into the {@link + * MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + LoadControl loadControl, + @Nullable DrmSessionManager drmSessionManager, + AnalyticsCollector analyticsCollector) { + return newSimpleInstance( + context, + renderersFactory, + trackSelector, + loadControl, + drmSessionManager, + analyticsCollector, + Util.getLooper()); + } + + /** + * @deprecated Use {@link SimpleExoPlayer.Builder} instead. The {@link DrmSessionManager} cannot + * be passed to {@link SimpleExoPlayer.Builder} and should instead be injected into the {@link + * MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + LoadControl loadControl, + @Nullable DrmSessionManager drmSessionManager, + Looper looper) { + return newSimpleInstance( + context, + renderersFactory, + trackSelector, + loadControl, + drmSessionManager, + new AnalyticsCollector(Clock.DEFAULT), + looper); + } + + /** + * @deprecated Use {@link SimpleExoPlayer.Builder} instead. The {@link DrmSessionManager} cannot + * be passed to {@link SimpleExoPlayer.Builder} and should instead be injected into the {@link + * MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public static SimpleExoPlayer newSimpleInstance( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + LoadControl loadControl, + @Nullable DrmSessionManager drmSessionManager, + AnalyticsCollector analyticsCollector, + Looper looper) { + return newSimpleInstance( + context, + renderersFactory, + trackSelector, + loadControl, + drmSessionManager, + DefaultBandwidthMeter.getSingletonInstance(context), + analyticsCollector, + looper); + } + + /** + * @deprecated Use {@link SimpleExoPlayer.Builder} instead. The {@link DrmSessionManager} cannot + * be passed to {@link SimpleExoPlayer.Builder} and should instead be injected into the {@link + * MediaSource} factories. + */ + @SuppressWarnings("deprecation") + @Deprecated + public static SimpleExoPlayer newSimpleInstance( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + LoadControl loadControl, + @Nullable DrmSessionManager drmSessionManager, + BandwidthMeter bandwidthMeter, + AnalyticsCollector analyticsCollector, + Looper looper) { + return new SimpleExoPlayer( + context, + renderersFactory, + trackSelector, + loadControl, + drmSessionManager, + bandwidthMeter, + analyticsCollector, + Clock.DEFAULT, + looper); + } + + /** @deprecated Use {@link ExoPlayer.Builder} instead. */ + @Deprecated + @SuppressWarnings("deprecation") + public static ExoPlayer newInstance( + Context context, Renderer[] renderers, TrackSelector trackSelector) { + return newInstance(context, renderers, trackSelector, new DefaultLoadControl()); + } + + /** @deprecated Use {@link ExoPlayer.Builder} instead. */ + @Deprecated + @SuppressWarnings("deprecation") + public static ExoPlayer newInstance( + Context context, Renderer[] renderers, TrackSelector trackSelector, LoadControl loadControl) { + return newInstance(context, renderers, trackSelector, loadControl, Util.getLooper()); + } + + /** @deprecated Use {@link ExoPlayer.Builder} instead. */ + @Deprecated + @SuppressWarnings("deprecation") + public static ExoPlayer newInstance( + Context context, + Renderer[] renderers, + TrackSelector trackSelector, + LoadControl loadControl, + Looper looper) { + return newInstance( + context, + renderers, + trackSelector, + loadControl, + DefaultBandwidthMeter.getSingletonInstance(context), + looper); + } + + /** @deprecated Use {@link ExoPlayer.Builder} instead. */ + @Deprecated + public static ExoPlayer newInstance( + Context context, + Renderer[] renderers, + TrackSelector trackSelector, + LoadControl loadControl, + BandwidthMeter bandwidthMeter, + Looper looper) { + return new ExoPlayerImpl( + renderers, trackSelector, loadControl, bandwidthMeter, Clock.DEFAULT, looper); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerImpl.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerImpl.java new file mode 100644 index 0000000000..eb9eaae2cf --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerImpl.java @@ -0,0 +1,848 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.annotation.SuppressLint; +import android.os.Handler; +import android.os.Looper; +import android.os.Message; +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlayerMessage.Target; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectorResult; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Clock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayDeque; +import java.util.concurrent.CopyOnWriteArrayList; + +/** + * An {@link ExoPlayer} implementation. Instances can be obtained from {@link ExoPlayer.Builder}. + */ +/* package */ final class ExoPlayerImpl extends BasePlayer implements ExoPlayer { + + private static final String TAG = "ExoPlayerImpl"; + + /** + * This empty track selector result can only be used for {@link PlaybackInfo#trackSelectorResult} + * when the player does not have any track selection made (such as when player is reset, or when + * player seeks to an unprepared period). It will not be used as result of any {@link + * TrackSelector#selectTracks(RendererCapabilities[], TrackGroupArray, MediaPeriodId, Timeline)} + * operation. + */ + /* package */ final TrackSelectorResult emptyTrackSelectorResult; + + private final Renderer[] renderers; + private final TrackSelector trackSelector; + private final Handler eventHandler; + private final ExoPlayerImplInternal internalPlayer; + private final Handler internalPlayerHandler; + private final CopyOnWriteArrayList listeners; + private final Timeline.Period period; + private final ArrayDeque pendingListenerNotifications; + + private MediaSource mediaSource; + private boolean playWhenReady; + @PlaybackSuppressionReason private int playbackSuppressionReason; + @RepeatMode private int repeatMode; + private boolean shuffleModeEnabled; + private int pendingOperationAcks; + private boolean hasPendingPrepare; + private boolean hasPendingSeek; + private boolean foregroundMode; + private int pendingSetPlaybackParametersAcks; + private PlaybackParameters playbackParameters; + private SeekParameters seekParameters; + + // Playback information when there is no pending seek/set source operation. + private PlaybackInfo playbackInfo; + + // Playback information when there is a pending seek/set source operation. + private int maskingWindowIndex; + private int maskingPeriodIndex; + private long maskingWindowPositionMs; + + /** + * Constructs an instance. Must be called from a thread that has an associated {@link Looper}. + * + * @param renderers The {@link Renderer}s that will be used by the instance. + * @param trackSelector The {@link TrackSelector} that will be used by the instance. + * @param loadControl The {@link LoadControl} that will be used by the instance. + * @param bandwidthMeter The {@link BandwidthMeter} that will be used by the instance. + * @param clock The {@link Clock} that will be used by the instance. + * @param looper The {@link Looper} which must be used for all calls to the player and which is + * used to call listeners on. + */ + @SuppressLint("HandlerLeak") + public ExoPlayerImpl( + Renderer[] renderers, + TrackSelector trackSelector, + LoadControl loadControl, + BandwidthMeter bandwidthMeter, + Clock clock, + Looper looper) { + Log.i(TAG, "Init " + Integer.toHexString(System.identityHashCode(this)) + " [" + + ExoPlayerLibraryInfo.VERSION_SLASHY + "] [" + Util.DEVICE_DEBUG_INFO + "]"); + Assertions.checkState(renderers.length > 0); + this.renderers = Assertions.checkNotNull(renderers); + this.trackSelector = Assertions.checkNotNull(trackSelector); + this.playWhenReady = false; + this.repeatMode = Player.REPEAT_MODE_OFF; + this.shuffleModeEnabled = false; + this.listeners = new CopyOnWriteArrayList<>(); + emptyTrackSelectorResult = + new TrackSelectorResult( + new RendererConfiguration[renderers.length], + new TrackSelection[renderers.length], + null); + period = new Timeline.Period(); + playbackParameters = PlaybackParameters.DEFAULT; + seekParameters = SeekParameters.DEFAULT; + playbackSuppressionReason = PLAYBACK_SUPPRESSION_REASON_NONE; + eventHandler = + new Handler(looper) { + @Override + public void handleMessage(Message msg) { + ExoPlayerImpl.this.handleEvent(msg); + } + }; + playbackInfo = PlaybackInfo.createDummy(/* startPositionUs= */ 0, emptyTrackSelectorResult); + pendingListenerNotifications = new ArrayDeque<>(); + internalPlayer = + new ExoPlayerImplInternal( + renderers, + trackSelector, + emptyTrackSelectorResult, + loadControl, + bandwidthMeter, + playWhenReady, + repeatMode, + shuffleModeEnabled, + eventHandler, + clock); + internalPlayerHandler = new Handler(internalPlayer.getPlaybackLooper()); + } + + @Override + @Nullable + public AudioComponent getAudioComponent() { + return null; + } + + @Override + @Nullable + public VideoComponent getVideoComponent() { + return null; + } + + @Override + @Nullable + public TextComponent getTextComponent() { + return null; + } + + @Override + @Nullable + public MetadataComponent getMetadataComponent() { + return null; + } + + @Override + public Looper getPlaybackLooper() { + return internalPlayer.getPlaybackLooper(); + } + + @Override + public Looper getApplicationLooper() { + return eventHandler.getLooper(); + } + + @Override + public void addListener(Player.EventListener listener) { + listeners.addIfAbsent(new ListenerHolder(listener)); + } + + @Override + public void removeListener(Player.EventListener listener) { + for (ListenerHolder listenerHolder : listeners) { + if (listenerHolder.listener.equals(listener)) { + listenerHolder.release(); + listeners.remove(listenerHolder); + } + } + } + + @Override + @State + public int getPlaybackState() { + return playbackInfo.playbackState; + } + + @Override + @PlaybackSuppressionReason + public int getPlaybackSuppressionReason() { + return playbackSuppressionReason; + } + + @Override + @Nullable + public ExoPlaybackException getPlaybackError() { + return playbackInfo.playbackError; + } + + @Override + public void retry() { + if (mediaSource != null && playbackInfo.playbackState == Player.STATE_IDLE) { + prepare(mediaSource, /* resetPosition= */ false, /* resetState= */ false); + } + } + + @Override + public void prepare(MediaSource mediaSource) { + prepare(mediaSource, /* resetPosition= */ true, /* resetState= */ true); + } + + @Override + public void prepare(MediaSource mediaSource, boolean resetPosition, boolean resetState) { + this.mediaSource = mediaSource; + PlaybackInfo playbackInfo = + getResetPlaybackInfo( + resetPosition, + resetState, + /* resetError= */ true, + /* playbackState= */ Player.STATE_BUFFERING); + // Trigger internal prepare first before updating the playback info and notifying external + // listeners to ensure that new operations issued in the listener notifications reach the + // player after this prepare. The internal player can't change the playback info immediately + // because it uses a callback. + hasPendingPrepare = true; + pendingOperationAcks++; + internalPlayer.prepare(mediaSource, resetPosition, resetState); + updatePlaybackInfo( + playbackInfo, + /* positionDiscontinuity= */ false, + /* ignored */ DISCONTINUITY_REASON_INTERNAL, + TIMELINE_CHANGE_REASON_RESET, + /* seekProcessed= */ false); + } + + + @Override + public void setPlayWhenReady(boolean playWhenReady) { + setPlayWhenReady(playWhenReady, PLAYBACK_SUPPRESSION_REASON_NONE); + } + + public void setPlayWhenReady( + boolean playWhenReady, @PlaybackSuppressionReason int playbackSuppressionReason) { + boolean oldIsPlaying = isPlaying(); + boolean oldInternalPlayWhenReady = + this.playWhenReady && this.playbackSuppressionReason == PLAYBACK_SUPPRESSION_REASON_NONE; + boolean internalPlayWhenReady = + playWhenReady && playbackSuppressionReason == PLAYBACK_SUPPRESSION_REASON_NONE; + if (oldInternalPlayWhenReady != internalPlayWhenReady) { + internalPlayer.setPlayWhenReady(internalPlayWhenReady); + } + boolean playWhenReadyChanged = this.playWhenReady != playWhenReady; + boolean suppressionReasonChanged = this.playbackSuppressionReason != playbackSuppressionReason; + this.playWhenReady = playWhenReady; + this.playbackSuppressionReason = playbackSuppressionReason; + boolean isPlaying = isPlaying(); + boolean isPlayingChanged = oldIsPlaying != isPlaying; + if (playWhenReadyChanged || suppressionReasonChanged || isPlayingChanged) { + int playbackState = playbackInfo.playbackState; + notifyListeners( + listener -> { + if (playWhenReadyChanged) { + listener.onPlayerStateChanged(playWhenReady, playbackState); + } + if (suppressionReasonChanged) { + listener.onPlaybackSuppressionReasonChanged(playbackSuppressionReason); + } + if (isPlayingChanged) { + listener.onIsPlayingChanged(isPlaying); + } + }); + } + } + + @Override + public boolean getPlayWhenReady() { + return playWhenReady; + } + + @Override + public void setRepeatMode(@RepeatMode int repeatMode) { + if (this.repeatMode != repeatMode) { + this.repeatMode = repeatMode; + internalPlayer.setRepeatMode(repeatMode); + notifyListeners(listener -> listener.onRepeatModeChanged(repeatMode)); + } + } + + @Override + public @RepeatMode int getRepeatMode() { + return repeatMode; + } + + @Override + public void setShuffleModeEnabled(boolean shuffleModeEnabled) { + if (this.shuffleModeEnabled != shuffleModeEnabled) { + this.shuffleModeEnabled = shuffleModeEnabled; + internalPlayer.setShuffleModeEnabled(shuffleModeEnabled); + notifyListeners(listener -> listener.onShuffleModeEnabledChanged(shuffleModeEnabled)); + } + } + + @Override + public boolean getShuffleModeEnabled() { + return shuffleModeEnabled; + } + + @Override + public boolean isLoading() { + return playbackInfo.isLoading; + } + + @Override + public void seekTo(int windowIndex, long positionMs) { + Timeline timeline = playbackInfo.timeline; + if (windowIndex < 0 || (!timeline.isEmpty() && windowIndex >= timeline.getWindowCount())) { + throw new IllegalSeekPositionException(timeline, windowIndex, positionMs); + } + hasPendingSeek = true; + pendingOperationAcks++; + if (isPlayingAd()) { + // TODO: Investigate adding support for seeking during ads. This is complicated to do in + // general because the midroll ad preceding the seek destination must be played before the + // content position can be played, if a different ad is playing at the moment. + Log.w(TAG, "seekTo ignored because an ad is playing"); + eventHandler + .obtainMessage( + ExoPlayerImplInternal.MSG_PLAYBACK_INFO_CHANGED, + /* operationAcks */ 1, + /* positionDiscontinuityReason */ C.INDEX_UNSET, + playbackInfo) + .sendToTarget(); + return; + } + maskingWindowIndex = windowIndex; + if (timeline.isEmpty()) { + maskingWindowPositionMs = positionMs == C.TIME_UNSET ? 0 : positionMs; + maskingPeriodIndex = 0; + } else { + long windowPositionUs = positionMs == C.TIME_UNSET + ? timeline.getWindow(windowIndex, window).getDefaultPositionUs() : C.msToUs(positionMs); + Pair periodUidAndPosition = + timeline.getPeriodPosition(window, period, windowIndex, windowPositionUs); + maskingWindowPositionMs = C.usToMs(windowPositionUs); + maskingPeriodIndex = timeline.getIndexOfPeriod(periodUidAndPosition.first); + } + internalPlayer.seekTo(timeline, windowIndex, C.msToUs(positionMs)); + notifyListeners(listener -> listener.onPositionDiscontinuity(DISCONTINUITY_REASON_SEEK)); + } + + @Override + public void setPlaybackParameters(@Nullable PlaybackParameters playbackParameters) { + if (playbackParameters == null) { + playbackParameters = PlaybackParameters.DEFAULT; + } + if (this.playbackParameters.equals(playbackParameters)) { + return; + } + pendingSetPlaybackParametersAcks++; + this.playbackParameters = playbackParameters; + internalPlayer.setPlaybackParameters(playbackParameters); + PlaybackParameters playbackParametersToNotify = playbackParameters; + notifyListeners(listener -> listener.onPlaybackParametersChanged(playbackParametersToNotify)); + } + + @Override + public PlaybackParameters getPlaybackParameters() { + return playbackParameters; + } + + @Override + public void setSeekParameters(@Nullable SeekParameters seekParameters) { + if (seekParameters == null) { + seekParameters = SeekParameters.DEFAULT; + } + if (!this.seekParameters.equals(seekParameters)) { + this.seekParameters = seekParameters; + internalPlayer.setSeekParameters(seekParameters); + } + } + + @Override + public SeekParameters getSeekParameters() { + return seekParameters; + } + + @Override + public void setForegroundMode(boolean foregroundMode) { + if (this.foregroundMode != foregroundMode) { + this.foregroundMode = foregroundMode; + internalPlayer.setForegroundMode(foregroundMode); + } + } + + @Override + public void stop(boolean reset) { + if (reset) { + mediaSource = null; + } + PlaybackInfo playbackInfo = + getResetPlaybackInfo( + /* resetPosition= */ reset, + /* resetState= */ reset, + /* resetError= */ reset, + /* playbackState= */ Player.STATE_IDLE); + // Trigger internal stop first before updating the playback info and notifying external + // listeners to ensure that new operations issued in the listener notifications reach the + // player after this stop. The internal player can't change the playback info immediately + // because it uses a callback. + pendingOperationAcks++; + internalPlayer.stop(reset); + updatePlaybackInfo( + playbackInfo, + /* positionDiscontinuity= */ false, + /* ignored */ DISCONTINUITY_REASON_INTERNAL, + TIMELINE_CHANGE_REASON_RESET, + /* seekProcessed= */ false); + } + + @Override + public void release() { + Log.i(TAG, "Release " + Integer.toHexString(System.identityHashCode(this)) + " [" + + ExoPlayerLibraryInfo.VERSION_SLASHY + "] [" + Util.DEVICE_DEBUG_INFO + "] [" + + ExoPlayerLibraryInfo.registeredModules() + "]"); + mediaSource = null; + internalPlayer.release(); + eventHandler.removeCallbacksAndMessages(null); + playbackInfo = + getResetPlaybackInfo( + /* resetPosition= */ false, + /* resetState= */ false, + /* resetError= */ false, + /* playbackState= */ Player.STATE_IDLE); + } + + @Override + public PlayerMessage createMessage(Target target) { + return new PlayerMessage( + internalPlayer, + target, + playbackInfo.timeline, + getCurrentWindowIndex(), + internalPlayerHandler); + } + + @Override + public int getCurrentPeriodIndex() { + if (shouldMaskPosition()) { + return maskingPeriodIndex; + } else { + return playbackInfo.timeline.getIndexOfPeriod(playbackInfo.periodId.periodUid); + } + } + + @Override + public int getCurrentWindowIndex() { + if (shouldMaskPosition()) { + return maskingWindowIndex; + } else { + return playbackInfo.timeline.getPeriodByUid(playbackInfo.periodId.periodUid, period) + .windowIndex; + } + } + + @Override + public long getDuration() { + if (isPlayingAd()) { + MediaPeriodId periodId = playbackInfo.periodId; + playbackInfo.timeline.getPeriodByUid(periodId.periodUid, period); + long adDurationUs = period.getAdDurationUs(periodId.adGroupIndex, periodId.adIndexInAdGroup); + return C.usToMs(adDurationUs); + } + return getContentDuration(); + } + + @Override + public long getCurrentPosition() { + if (shouldMaskPosition()) { + return maskingWindowPositionMs; + } else if (playbackInfo.periodId.isAd()) { + return C.usToMs(playbackInfo.positionUs); + } else { + return periodPositionUsToWindowPositionMs(playbackInfo.periodId, playbackInfo.positionUs); + } + } + + @Override + public long getBufferedPosition() { + if (isPlayingAd()) { + return playbackInfo.loadingMediaPeriodId.equals(playbackInfo.periodId) + ? C.usToMs(playbackInfo.bufferedPositionUs) + : getDuration(); + } + return getContentBufferedPosition(); + } + + @Override + public long getTotalBufferedDuration() { + return C.usToMs(playbackInfo.totalBufferedDurationUs); + } + + @Override + public boolean isPlayingAd() { + return !shouldMaskPosition() && playbackInfo.periodId.isAd(); + } + + @Override + public int getCurrentAdGroupIndex() { + return isPlayingAd() ? playbackInfo.periodId.adGroupIndex : C.INDEX_UNSET; + } + + @Override + public int getCurrentAdIndexInAdGroup() { + return isPlayingAd() ? playbackInfo.periodId.adIndexInAdGroup : C.INDEX_UNSET; + } + + @Override + public long getContentPosition() { + if (isPlayingAd()) { + playbackInfo.timeline.getPeriodByUid(playbackInfo.periodId.periodUid, period); + return playbackInfo.contentPositionUs == C.TIME_UNSET + ? playbackInfo.timeline.getWindow(getCurrentWindowIndex(), window).getDefaultPositionMs() + : period.getPositionInWindowMs() + C.usToMs(playbackInfo.contentPositionUs); + } else { + return getCurrentPosition(); + } + } + + @Override + public long getContentBufferedPosition() { + if (shouldMaskPosition()) { + return maskingWindowPositionMs; + } + if (playbackInfo.loadingMediaPeriodId.windowSequenceNumber + != playbackInfo.periodId.windowSequenceNumber) { + return playbackInfo.timeline.getWindow(getCurrentWindowIndex(), window).getDurationMs(); + } + long contentBufferedPositionUs = playbackInfo.bufferedPositionUs; + if (playbackInfo.loadingMediaPeriodId.isAd()) { + Timeline.Period loadingPeriod = + playbackInfo.timeline.getPeriodByUid(playbackInfo.loadingMediaPeriodId.periodUid, period); + contentBufferedPositionUs = + loadingPeriod.getAdGroupTimeUs(playbackInfo.loadingMediaPeriodId.adGroupIndex); + if (contentBufferedPositionUs == C.TIME_END_OF_SOURCE) { + contentBufferedPositionUs = loadingPeriod.durationUs; + } + } + return periodPositionUsToWindowPositionMs( + playbackInfo.loadingMediaPeriodId, contentBufferedPositionUs); + } + + @Override + public int getRendererCount() { + return renderers.length; + } + + @Override + public int getRendererType(int index) { + return renderers[index].getTrackType(); + } + + @Override + public TrackGroupArray getCurrentTrackGroups() { + return playbackInfo.trackGroups; + } + + @Override + public TrackSelectionArray getCurrentTrackSelections() { + return playbackInfo.trackSelectorResult.selections; + } + + @Override + public Timeline getCurrentTimeline() { + return playbackInfo.timeline; + } + + // Not private so it can be called from an inner class without going through a thunk method. + /* package */ void handleEvent(Message msg) { + switch (msg.what) { + case ExoPlayerImplInternal.MSG_PLAYBACK_INFO_CHANGED: + handlePlaybackInfo( + (PlaybackInfo) msg.obj, + /* operationAcks= */ msg.arg1, + /* positionDiscontinuity= */ msg.arg2 != C.INDEX_UNSET, + /* positionDiscontinuityReason= */ msg.arg2); + break; + case ExoPlayerImplInternal.MSG_PLAYBACK_PARAMETERS_CHANGED: + handlePlaybackParameters((PlaybackParameters) msg.obj, /* operationAck= */ msg.arg1 != 0); + break; + default: + throw new IllegalStateException(); + } + } + + private void handlePlaybackParameters( + PlaybackParameters playbackParameters, boolean operationAck) { + if (operationAck) { + pendingSetPlaybackParametersAcks--; + } + if (pendingSetPlaybackParametersAcks == 0) { + if (!this.playbackParameters.equals(playbackParameters)) { + this.playbackParameters = playbackParameters; + notifyListeners(listener -> listener.onPlaybackParametersChanged(playbackParameters)); + } + } + } + + private void handlePlaybackInfo( + PlaybackInfo playbackInfo, + int operationAcks, + boolean positionDiscontinuity, + @DiscontinuityReason int positionDiscontinuityReason) { + pendingOperationAcks -= operationAcks; + if (pendingOperationAcks == 0) { + if (playbackInfo.startPositionUs == C.TIME_UNSET) { + // Replace internal unset start position with externally visible start position of zero. + playbackInfo = + playbackInfo.copyWithNewPosition( + playbackInfo.periodId, + /* positionUs= */ 0, + playbackInfo.contentPositionUs, + playbackInfo.totalBufferedDurationUs); + } + if (!this.playbackInfo.timeline.isEmpty() && playbackInfo.timeline.isEmpty()) { + // Update the masking variables, which are used when the timeline becomes empty. + maskingPeriodIndex = 0; + maskingWindowIndex = 0; + maskingWindowPositionMs = 0; + } + @Player.TimelineChangeReason + int timelineChangeReason = + hasPendingPrepare + ? Player.TIMELINE_CHANGE_REASON_PREPARED + : Player.TIMELINE_CHANGE_REASON_DYNAMIC; + boolean seekProcessed = hasPendingSeek; + hasPendingPrepare = false; + hasPendingSeek = false; + updatePlaybackInfo( + playbackInfo, + positionDiscontinuity, + positionDiscontinuityReason, + timelineChangeReason, + seekProcessed); + } + } + + private PlaybackInfo getResetPlaybackInfo( + boolean resetPosition, + boolean resetState, + boolean resetError, + @Player.State int playbackState) { + if (resetPosition) { + maskingWindowIndex = 0; + maskingPeriodIndex = 0; + maskingWindowPositionMs = 0; + } else { + maskingWindowIndex = getCurrentWindowIndex(); + maskingPeriodIndex = getCurrentPeriodIndex(); + maskingWindowPositionMs = getCurrentPosition(); + } + // Also reset period-based PlaybackInfo positions if resetting the state. + resetPosition = resetPosition || resetState; + MediaPeriodId mediaPeriodId = + resetPosition + ? playbackInfo.getDummyFirstMediaPeriodId(shuffleModeEnabled, window, period) + : playbackInfo.periodId; + long startPositionUs = resetPosition ? 0 : playbackInfo.positionUs; + long contentPositionUs = resetPosition ? C.TIME_UNSET : playbackInfo.contentPositionUs; + return new PlaybackInfo( + resetState ? Timeline.EMPTY : playbackInfo.timeline, + mediaPeriodId, + startPositionUs, + contentPositionUs, + playbackState, + resetError ? null : playbackInfo.playbackError, + /* isLoading= */ false, + resetState ? TrackGroupArray.EMPTY : playbackInfo.trackGroups, + resetState ? emptyTrackSelectorResult : playbackInfo.trackSelectorResult, + mediaPeriodId, + startPositionUs, + /* totalBufferedDurationUs= */ 0, + startPositionUs); + } + + private void updatePlaybackInfo( + PlaybackInfo playbackInfo, + boolean positionDiscontinuity, + @Player.DiscontinuityReason int positionDiscontinuityReason, + @Player.TimelineChangeReason int timelineChangeReason, + boolean seekProcessed) { + boolean previousIsPlaying = isPlaying(); + // Assign playback info immediately such that all getters return the right values. + PlaybackInfo previousPlaybackInfo = this.playbackInfo; + this.playbackInfo = playbackInfo; + boolean isPlaying = isPlaying(); + notifyListeners( + new PlaybackInfoUpdate( + playbackInfo, + previousPlaybackInfo, + listeners, + trackSelector, + positionDiscontinuity, + positionDiscontinuityReason, + timelineChangeReason, + seekProcessed, + playWhenReady, + /* isPlayingChanged= */ previousIsPlaying != isPlaying)); + } + + private void notifyListeners(ListenerInvocation listenerInvocation) { + CopyOnWriteArrayList listenerSnapshot = new CopyOnWriteArrayList<>(listeners); + notifyListeners(() -> invokeAll(listenerSnapshot, listenerInvocation)); + } + + private void notifyListeners(Runnable listenerNotificationRunnable) { + boolean isRunningRecursiveListenerNotification = !pendingListenerNotifications.isEmpty(); + pendingListenerNotifications.addLast(listenerNotificationRunnable); + if (isRunningRecursiveListenerNotification) { + return; + } + while (!pendingListenerNotifications.isEmpty()) { + pendingListenerNotifications.peekFirst().run(); + pendingListenerNotifications.removeFirst(); + } + } + + private long periodPositionUsToWindowPositionMs(MediaPeriodId periodId, long positionUs) { + long positionMs = C.usToMs(positionUs); + playbackInfo.timeline.getPeriodByUid(periodId.periodUid, period); + positionMs += period.getPositionInWindowMs(); + return positionMs; + } + + private boolean shouldMaskPosition() { + return playbackInfo.timeline.isEmpty() || pendingOperationAcks > 0; + } + + private static final class PlaybackInfoUpdate implements Runnable { + + private final PlaybackInfo playbackInfo; + private final CopyOnWriteArrayList listenerSnapshot; + private final TrackSelector trackSelector; + private final boolean positionDiscontinuity; + private final @Player.DiscontinuityReason int positionDiscontinuityReason; + private final @Player.TimelineChangeReason int timelineChangeReason; + private final boolean seekProcessed; + private final boolean playbackStateChanged; + private final boolean playbackErrorChanged; + private final boolean timelineChanged; + private final boolean isLoadingChanged; + private final boolean trackSelectorResultChanged; + private final boolean playWhenReady; + private final boolean isPlayingChanged; + + public PlaybackInfoUpdate( + PlaybackInfo playbackInfo, + PlaybackInfo previousPlaybackInfo, + CopyOnWriteArrayList listeners, + TrackSelector trackSelector, + boolean positionDiscontinuity, + @DiscontinuityReason int positionDiscontinuityReason, + @TimelineChangeReason int timelineChangeReason, + boolean seekProcessed, + boolean playWhenReady, + boolean isPlayingChanged) { + this.playbackInfo = playbackInfo; + this.listenerSnapshot = new CopyOnWriteArrayList<>(listeners); + this.trackSelector = trackSelector; + this.positionDiscontinuity = positionDiscontinuity; + this.positionDiscontinuityReason = positionDiscontinuityReason; + this.timelineChangeReason = timelineChangeReason; + this.seekProcessed = seekProcessed; + this.playWhenReady = playWhenReady; + this.isPlayingChanged = isPlayingChanged; + playbackStateChanged = previousPlaybackInfo.playbackState != playbackInfo.playbackState; + playbackErrorChanged = + previousPlaybackInfo.playbackError != playbackInfo.playbackError + && playbackInfo.playbackError != null; + timelineChanged = previousPlaybackInfo.timeline != playbackInfo.timeline; + isLoadingChanged = previousPlaybackInfo.isLoading != playbackInfo.isLoading; + trackSelectorResultChanged = + previousPlaybackInfo.trackSelectorResult != playbackInfo.trackSelectorResult; + } + + @Override + public void run() { + if (timelineChanged || timelineChangeReason == TIMELINE_CHANGE_REASON_PREPARED) { + invokeAll( + listenerSnapshot, + listener -> listener.onTimelineChanged(playbackInfo.timeline, timelineChangeReason)); + } + if (positionDiscontinuity) { + invokeAll( + listenerSnapshot, + listener -> listener.onPositionDiscontinuity(positionDiscontinuityReason)); + } + if (playbackErrorChanged) { + invokeAll(listenerSnapshot, listener -> listener.onPlayerError(playbackInfo.playbackError)); + } + if (trackSelectorResultChanged) { + trackSelector.onSelectionActivated(playbackInfo.trackSelectorResult.info); + invokeAll( + listenerSnapshot, + listener -> + listener.onTracksChanged( + playbackInfo.trackGroups, playbackInfo.trackSelectorResult.selections)); + } + if (isLoadingChanged) { + invokeAll(listenerSnapshot, listener -> listener.onLoadingChanged(playbackInfo.isLoading)); + } + if (playbackStateChanged) { + invokeAll( + listenerSnapshot, + listener -> listener.onPlayerStateChanged(playWhenReady, playbackInfo.playbackState)); + } + if (isPlayingChanged) { + invokeAll( + listenerSnapshot, + listener -> + listener.onIsPlayingChanged(playbackInfo.playbackState == Player.STATE_READY)); + } + if (seekProcessed) { + invokeAll(listenerSnapshot, EventListener::onSeekProcessed); + } + } + } + + private static void invokeAll( + CopyOnWriteArrayList listeners, ListenerInvocation listenerInvocation) { + for (ListenerHolder listenerHolder : listeners) { + listenerHolder.invoke(listenerInvocation); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerImplInternal.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerImplInternal.java new file mode 100644 index 0000000000..a4462ad1c4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerImplInternal.java @@ -0,0 +1,2045 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.os.Handler; +import android.os.HandlerThread; +import android.os.Looper; +import android.os.Message; +import android.os.Process; +import android.os.SystemClock; +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.DefaultMediaClock.PlaybackParameterListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.DiscontinuityReason; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectorResult; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Clock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.HandlerWrapper; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TraceUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.concurrent.atomic.AtomicBoolean; + +/** Implements the internal behavior of {@link ExoPlayerImpl}. */ +/* package */ final class ExoPlayerImplInternal + implements Handler.Callback, + MediaPeriod.Callback, + TrackSelector.InvalidationListener, + MediaSourceCaller, + PlaybackParameterListener, + PlayerMessage.Sender { + + private static final String TAG = "ExoPlayerImplInternal"; + + // External messages + public static final int MSG_PLAYBACK_INFO_CHANGED = 0; + public static final int MSG_PLAYBACK_PARAMETERS_CHANGED = 1; + + // Internal messages + private static final int MSG_PREPARE = 0; + private static final int MSG_SET_PLAY_WHEN_READY = 1; + private static final int MSG_DO_SOME_WORK = 2; + private static final int MSG_SEEK_TO = 3; + private static final int MSG_SET_PLAYBACK_PARAMETERS = 4; + private static final int MSG_SET_SEEK_PARAMETERS = 5; + private static final int MSG_STOP = 6; + private static final int MSG_RELEASE = 7; + private static final int MSG_REFRESH_SOURCE_INFO = 8; + private static final int MSG_PERIOD_PREPARED = 9; + private static final int MSG_SOURCE_CONTINUE_LOADING_REQUESTED = 10; + private static final int MSG_TRACK_SELECTION_INVALIDATED = 11; + private static final int MSG_SET_REPEAT_MODE = 12; + private static final int MSG_SET_SHUFFLE_ENABLED = 13; + private static final int MSG_SET_FOREGROUND_MODE = 14; + private static final int MSG_SEND_MESSAGE = 15; + private static final int MSG_SEND_MESSAGE_TO_TARGET_THREAD = 16; + private static final int MSG_PLAYBACK_PARAMETERS_CHANGED_INTERNAL = 17; + + private static final int ACTIVE_INTERVAL_MS = 10; + private static final int IDLE_INTERVAL_MS = 1000; + + private final Renderer[] renderers; + private final RendererCapabilities[] rendererCapabilities; + private final TrackSelector trackSelector; + private final TrackSelectorResult emptyTrackSelectorResult; + private final LoadControl loadControl; + private final BandwidthMeter bandwidthMeter; + private final HandlerWrapper handler; + private final HandlerThread internalPlaybackThread; + private final Handler eventHandler; + private final Timeline.Window window; + private final Timeline.Period period; + private final long backBufferDurationUs; + private final boolean retainBackBufferFromKeyframe; + private final DefaultMediaClock mediaClock; + private final PlaybackInfoUpdate playbackInfoUpdate; + private final ArrayList pendingMessages; + private final Clock clock; + private final MediaPeriodQueue queue; + + @SuppressWarnings("unused") + private SeekParameters seekParameters; + + private PlaybackInfo playbackInfo; + private MediaSource mediaSource; + private Renderer[] enabledRenderers; + private boolean released; + private boolean playWhenReady; + private boolean rebuffering; + private boolean shouldContinueLoading; + @Player.RepeatMode private int repeatMode; + private boolean shuffleModeEnabled; + private boolean foregroundMode; + + private int pendingPrepareCount; + private SeekPosition pendingInitialSeekPosition; + private long rendererPositionUs; + private int nextPendingMessageIndex; + private boolean deliverPendingMessageAtStartPositionRequired; + + public ExoPlayerImplInternal( + Renderer[] renderers, + TrackSelector trackSelector, + TrackSelectorResult emptyTrackSelectorResult, + LoadControl loadControl, + BandwidthMeter bandwidthMeter, + boolean playWhenReady, + @Player.RepeatMode int repeatMode, + boolean shuffleModeEnabled, + Handler eventHandler, + Clock clock) { + this.renderers = renderers; + this.trackSelector = trackSelector; + this.emptyTrackSelectorResult = emptyTrackSelectorResult; + this.loadControl = loadControl; + this.bandwidthMeter = bandwidthMeter; + this.playWhenReady = playWhenReady; + this.repeatMode = repeatMode; + this.shuffleModeEnabled = shuffleModeEnabled; + this.eventHandler = eventHandler; + this.clock = clock; + this.queue = new MediaPeriodQueue(); + + backBufferDurationUs = loadControl.getBackBufferDurationUs(); + retainBackBufferFromKeyframe = loadControl.retainBackBufferFromKeyframe(); + + seekParameters = SeekParameters.DEFAULT; + playbackInfo = + PlaybackInfo.createDummy(/* startPositionUs= */ C.TIME_UNSET, emptyTrackSelectorResult); + playbackInfoUpdate = new PlaybackInfoUpdate(); + rendererCapabilities = new RendererCapabilities[renderers.length]; + for (int i = 0; i < renderers.length; i++) { + renderers[i].setIndex(i); + rendererCapabilities[i] = renderers[i].getCapabilities(); + } + mediaClock = new DefaultMediaClock(this, clock); + pendingMessages = new ArrayList<>(); + enabledRenderers = new Renderer[0]; + window = new Timeline.Window(); + period = new Timeline.Period(); + trackSelector.init(/* listener= */ this, bandwidthMeter); + + // Note: The documentation for Process.THREAD_PRIORITY_AUDIO that states "Applications can + // not normally change to this priority" is incorrect. + internalPlaybackThread = + new HandlerThread("ExoPlayerImplInternal:Handler", Process.THREAD_PRIORITY_AUDIO); + internalPlaybackThread.start(); + handler = clock.createHandler(internalPlaybackThread.getLooper(), this); + deliverPendingMessageAtStartPositionRequired = true; + } + + public void prepare(MediaSource mediaSource, boolean resetPosition, boolean resetState) { + handler + .obtainMessage(MSG_PREPARE, resetPosition ? 1 : 0, resetState ? 1 : 0, mediaSource) + .sendToTarget(); + } + + public void setPlayWhenReady(boolean playWhenReady) { + handler.obtainMessage(MSG_SET_PLAY_WHEN_READY, playWhenReady ? 1 : 0, 0).sendToTarget(); + } + + public void setRepeatMode(@Player.RepeatMode int repeatMode) { + handler.obtainMessage(MSG_SET_REPEAT_MODE, repeatMode, 0).sendToTarget(); + } + + public void setShuffleModeEnabled(boolean shuffleModeEnabled) { + handler.obtainMessage(MSG_SET_SHUFFLE_ENABLED, shuffleModeEnabled ? 1 : 0, 0).sendToTarget(); + } + + public void seekTo(Timeline timeline, int windowIndex, long positionUs) { + handler + .obtainMessage(MSG_SEEK_TO, new SeekPosition(timeline, windowIndex, positionUs)) + .sendToTarget(); + } + + public void setPlaybackParameters(PlaybackParameters playbackParameters) { + handler.obtainMessage(MSG_SET_PLAYBACK_PARAMETERS, playbackParameters).sendToTarget(); + } + + public void setSeekParameters(SeekParameters seekParameters) { + handler.obtainMessage(MSG_SET_SEEK_PARAMETERS, seekParameters).sendToTarget(); + } + + public void stop(boolean reset) { + handler.obtainMessage(MSG_STOP, reset ? 1 : 0, 0).sendToTarget(); + } + + @Override + public synchronized void sendMessage(PlayerMessage message) { + if (released || !internalPlaybackThread.isAlive()) { + Log.w(TAG, "Ignoring messages sent after release."); + message.markAsProcessed(/* isDelivered= */ false); + return; + } + handler.obtainMessage(MSG_SEND_MESSAGE, message).sendToTarget(); + } + + public synchronized void setForegroundMode(boolean foregroundMode) { + if (released || !internalPlaybackThread.isAlive()) { + return; + } + if (foregroundMode) { + handler.obtainMessage(MSG_SET_FOREGROUND_MODE, /* foregroundMode */ 1, 0).sendToTarget(); + } else { + AtomicBoolean processedFlag = new AtomicBoolean(); + handler + .obtainMessage(MSG_SET_FOREGROUND_MODE, /* foregroundMode */ 0, 0, processedFlag) + .sendToTarget(); + boolean wasInterrupted = false; + while (!processedFlag.get()) { + try { + wait(); + } catch (InterruptedException e) { + wasInterrupted = true; + } + } + if (wasInterrupted) { + // Restore the interrupted status. + Thread.currentThread().interrupt(); + } + } + } + + public synchronized void release() { + if (released || !internalPlaybackThread.isAlive()) { + return; + } + handler.sendEmptyMessage(MSG_RELEASE); + boolean wasInterrupted = false; + while (!released) { + try { + wait(); + } catch (InterruptedException e) { + wasInterrupted = true; + } + } + if (wasInterrupted) { + // Restore the interrupted status. + Thread.currentThread().interrupt(); + } + } + + public Looper getPlaybackLooper() { + return internalPlaybackThread.getLooper(); + } + + // MediaSource.MediaSourceCaller implementation. + + @Override + public void onSourceInfoRefreshed(MediaSource source, Timeline timeline) { + handler + .obtainMessage(MSG_REFRESH_SOURCE_INFO, new MediaSourceRefreshInfo(source, timeline)) + .sendToTarget(); + } + + // MediaPeriod.Callback implementation. + + @Override + public void onPrepared(MediaPeriod source) { + handler.obtainMessage(MSG_PERIOD_PREPARED, source).sendToTarget(); + } + + @Override + public void onContinueLoadingRequested(MediaPeriod source) { + handler.obtainMessage(MSG_SOURCE_CONTINUE_LOADING_REQUESTED, source).sendToTarget(); + } + + // TrackSelector.InvalidationListener implementation. + + @Override + public void onTrackSelectionsInvalidated() { + handler.sendEmptyMessage(MSG_TRACK_SELECTION_INVALIDATED); + } + + // DefaultMediaClock.PlaybackParameterListener implementation. + + @Override + public void onPlaybackParametersChanged(PlaybackParameters playbackParameters) { + sendPlaybackParametersChangedInternal(playbackParameters, /* acknowledgeCommand= */ false); + } + + // Handler.Callback implementation. + + @Override + public boolean handleMessage(Message msg) { + try { + switch (msg.what) { + case MSG_PREPARE: + prepareInternal( + (MediaSource) msg.obj, + /* resetPosition= */ msg.arg1 != 0, + /* resetState= */ msg.arg2 != 0); + break; + case MSG_SET_PLAY_WHEN_READY: + setPlayWhenReadyInternal(msg.arg1 != 0); + break; + case MSG_SET_REPEAT_MODE: + setRepeatModeInternal(msg.arg1); + break; + case MSG_SET_SHUFFLE_ENABLED: + setShuffleModeEnabledInternal(msg.arg1 != 0); + break; + case MSG_DO_SOME_WORK: + doSomeWork(); + break; + case MSG_SEEK_TO: + seekToInternal((SeekPosition) msg.obj); + break; + case MSG_SET_PLAYBACK_PARAMETERS: + setPlaybackParametersInternal((PlaybackParameters) msg.obj); + break; + case MSG_SET_SEEK_PARAMETERS: + setSeekParametersInternal((SeekParameters) msg.obj); + break; + case MSG_SET_FOREGROUND_MODE: + setForegroundModeInternal( + /* foregroundMode= */ msg.arg1 != 0, /* processedFlag= */ (AtomicBoolean) msg.obj); + break; + case MSG_STOP: + stopInternal( + /* forceResetRenderers= */ false, + /* resetPositionAndState= */ msg.arg1 != 0, + /* acknowledgeStop= */ true); + break; + case MSG_PERIOD_PREPARED: + handlePeriodPrepared((MediaPeriod) msg.obj); + break; + case MSG_REFRESH_SOURCE_INFO: + handleSourceInfoRefreshed((MediaSourceRefreshInfo) msg.obj); + break; + case MSG_SOURCE_CONTINUE_LOADING_REQUESTED: + handleContinueLoadingRequested((MediaPeriod) msg.obj); + break; + case MSG_TRACK_SELECTION_INVALIDATED: + reselectTracksInternal(); + break; + case MSG_PLAYBACK_PARAMETERS_CHANGED_INTERNAL: + handlePlaybackParameters( + (PlaybackParameters) msg.obj, /* acknowledgeCommand= */ msg.arg1 != 0); + break; + case MSG_SEND_MESSAGE: + sendMessageInternal((PlayerMessage) msg.obj); + break; + case MSG_SEND_MESSAGE_TO_TARGET_THREAD: + sendMessageToTargetThread((PlayerMessage) msg.obj); + break; + case MSG_RELEASE: + releaseInternal(); + // Return immediately to not send playback info updates after release. + return true; + default: + return false; + } + maybeNotifyPlaybackInfoChanged(); + } catch (ExoPlaybackException e) { + Log.e(TAG, getExoPlaybackExceptionMessage(e), e); + stopInternal( + /* forceResetRenderers= */ true, + /* resetPositionAndState= */ false, + /* acknowledgeStop= */ false); + playbackInfo = playbackInfo.copyWithPlaybackError(e); + maybeNotifyPlaybackInfoChanged(); + } catch (IOException e) { + Log.e(TAG, "Source error", e); + stopInternal( + /* forceResetRenderers= */ false, + /* resetPositionAndState= */ false, + /* acknowledgeStop= */ false); + playbackInfo = playbackInfo.copyWithPlaybackError(ExoPlaybackException.createForSource(e)); + maybeNotifyPlaybackInfoChanged(); + } catch (RuntimeException | OutOfMemoryError e) { + Log.e(TAG, "Internal runtime error", e); + ExoPlaybackException error = + e instanceof OutOfMemoryError + ? ExoPlaybackException.createForOutOfMemoryError((OutOfMemoryError) e) + : ExoPlaybackException.createForUnexpected((RuntimeException) e); + stopInternal( + /* forceResetRenderers= */ true, + /* resetPositionAndState= */ false, + /* acknowledgeStop= */ false); + playbackInfo = playbackInfo.copyWithPlaybackError(error); + maybeNotifyPlaybackInfoChanged(); + } + return true; + } + + // Private methods. + + private String getExoPlaybackExceptionMessage(ExoPlaybackException e) { + if (e.type != ExoPlaybackException.TYPE_RENDERER) { + return "Playback error."; + } + return "Renderer error: index=" + + e.rendererIndex + + ", type=" + + Util.getTrackTypeString(renderers[e.rendererIndex].getTrackType()) + + ", format=" + + e.rendererFormat + + ", rendererSupport=" + + RendererCapabilities.getFormatSupportString(e.rendererFormatSupport); + } + + private void setState(int state) { + if (playbackInfo.playbackState != state) { + playbackInfo = playbackInfo.copyWithPlaybackState(state); + } + } + + private void maybeNotifyPlaybackInfoChanged() { + if (playbackInfoUpdate.hasPendingUpdate(playbackInfo)) { + eventHandler + .obtainMessage( + MSG_PLAYBACK_INFO_CHANGED, + playbackInfoUpdate.operationAcks, + playbackInfoUpdate.positionDiscontinuity + ? playbackInfoUpdate.discontinuityReason + : C.INDEX_UNSET, + playbackInfo) + .sendToTarget(); + playbackInfoUpdate.reset(playbackInfo); + } + } + + private void prepareInternal(MediaSource mediaSource, boolean resetPosition, boolean resetState) { + pendingPrepareCount++; + resetInternal( + /* resetRenderers= */ false, + /* releaseMediaSource= */ true, + resetPosition, + resetState, + /* resetError= */ true); + loadControl.onPrepared(); + this.mediaSource = mediaSource; + setState(Player.STATE_BUFFERING); + mediaSource.prepareSource(/* caller= */ this, bandwidthMeter.getTransferListener()); + handler.sendEmptyMessage(MSG_DO_SOME_WORK); + } + + private void setPlayWhenReadyInternal(boolean playWhenReady) throws ExoPlaybackException { + rebuffering = false; + this.playWhenReady = playWhenReady; + if (!playWhenReady) { + stopRenderers(); + updatePlaybackPositions(); + } else { + if (playbackInfo.playbackState == Player.STATE_READY) { + startRenderers(); + handler.sendEmptyMessage(MSG_DO_SOME_WORK); + } else if (playbackInfo.playbackState == Player.STATE_BUFFERING) { + handler.sendEmptyMessage(MSG_DO_SOME_WORK); + } + } + } + + private void setRepeatModeInternal(@Player.RepeatMode int repeatMode) + throws ExoPlaybackException { + this.repeatMode = repeatMode; + if (!queue.updateRepeatMode(repeatMode)) { + seekToCurrentPosition(/* sendDiscontinuity= */ true); + } + handleLoadingMediaPeriodChanged(/* loadingTrackSelectionChanged= */ false); + } + + private void setShuffleModeEnabledInternal(boolean shuffleModeEnabled) + throws ExoPlaybackException { + this.shuffleModeEnabled = shuffleModeEnabled; + if (!queue.updateShuffleModeEnabled(shuffleModeEnabled)) { + seekToCurrentPosition(/* sendDiscontinuity= */ true); + } + handleLoadingMediaPeriodChanged(/* loadingTrackSelectionChanged= */ false); + } + + private void seekToCurrentPosition(boolean sendDiscontinuity) throws ExoPlaybackException { + // Renderers may have read from a period that's been removed. Seek back to the current + // position of the playing period to make sure none of the removed period is played. + MediaPeriodId periodId = queue.getPlayingPeriod().info.id; + long newPositionUs = + seekToPeriodPosition(periodId, playbackInfo.positionUs, /* forceDisableRenderers= */ true); + if (newPositionUs != playbackInfo.positionUs) { + playbackInfo = copyWithNewPosition(periodId, newPositionUs, playbackInfo.contentPositionUs); + if (sendDiscontinuity) { + playbackInfoUpdate.setPositionDiscontinuity(Player.DISCONTINUITY_REASON_INTERNAL); + } + } + } + + private void startRenderers() throws ExoPlaybackException { + rebuffering = false; + mediaClock.start(); + for (Renderer renderer : enabledRenderers) { + renderer.start(); + } + } + + private void stopRenderers() throws ExoPlaybackException { + mediaClock.stop(); + for (Renderer renderer : enabledRenderers) { + ensureStopped(renderer); + } + } + + private void updatePlaybackPositions() throws ExoPlaybackException { + MediaPeriodHolder playingPeriodHolder = queue.getPlayingPeriod(); + if (playingPeriodHolder == null) { + return; + } + + // Update the playback position. + long discontinuityPositionUs = + playingPeriodHolder.prepared + ? playingPeriodHolder.mediaPeriod.readDiscontinuity() + : C.TIME_UNSET; + if (discontinuityPositionUs != C.TIME_UNSET) { + resetRendererPosition(discontinuityPositionUs); + // A MediaPeriod may report a discontinuity at the current playback position to ensure the + // renderers are flushed. Only report the discontinuity externally if the position changed. + if (discontinuityPositionUs != playbackInfo.positionUs) { + playbackInfo = + copyWithNewPosition( + playbackInfo.periodId, discontinuityPositionUs, playbackInfo.contentPositionUs); + playbackInfoUpdate.setPositionDiscontinuity(Player.DISCONTINUITY_REASON_INTERNAL); + } + } else { + rendererPositionUs = + mediaClock.syncAndGetPositionUs( + /* isReadingAhead= */ playingPeriodHolder != queue.getReadingPeriod()); + long periodPositionUs = playingPeriodHolder.toPeriodTime(rendererPositionUs); + maybeTriggerPendingMessages(playbackInfo.positionUs, periodPositionUs); + playbackInfo.positionUs = periodPositionUs; + } + + // Update the buffered position and total buffered duration. + MediaPeriodHolder loadingPeriod = queue.getLoadingPeriod(); + playbackInfo.bufferedPositionUs = loadingPeriod.getBufferedPositionUs(); + playbackInfo.totalBufferedDurationUs = getTotalBufferedDurationUs(); + } + + private void doSomeWork() throws ExoPlaybackException, IOException { + long operationStartTimeMs = clock.uptimeMillis(); + updatePeriods(); + + if (playbackInfo.playbackState == Player.STATE_IDLE + || playbackInfo.playbackState == Player.STATE_ENDED) { + // Remove all messages. Prepare (in case of IDLE) or seek (in case of ENDED) will resume. + handler.removeMessages(MSG_DO_SOME_WORK); + return; + } + + @Nullable MediaPeriodHolder playingPeriodHolder = queue.getPlayingPeriod(); + if (playingPeriodHolder == null) { + // We're still waiting until the playing period is available. + scheduleNextWork(operationStartTimeMs, ACTIVE_INTERVAL_MS); + return; + } + + TraceUtil.beginSection("doSomeWork"); + + updatePlaybackPositions(); + + boolean renderersEnded = true; + boolean renderersAllowPlayback = true; + if (playingPeriodHolder.prepared) { + long rendererPositionElapsedRealtimeUs = SystemClock.elapsedRealtime() * 1000; + playingPeriodHolder.mediaPeriod.discardBuffer( + playbackInfo.positionUs - backBufferDurationUs, retainBackBufferFromKeyframe); + for (int i = 0; i < renderers.length; i++) { + Renderer renderer = renderers[i]; + if (renderer.getState() == Renderer.STATE_DISABLED) { + continue; + } + // TODO: Each renderer should return the maximum delay before which it wishes to be called + // again. The minimum of these values should then be used as the delay before the next + // invocation of this method. + renderer.render(rendererPositionUs, rendererPositionElapsedRealtimeUs); + renderersEnded = renderersEnded && renderer.isEnded(); + // Determine whether the renderer allows playback to continue. Playback can continue if the + // renderer is ready or ended. Also continue playback if the renderer is reading ahead into + // the next stream or is waiting for the next stream. This is to avoid getting stuck if + // tracks in the current period have uneven durations and are still being read by another + // renderer. See: https://github.com/google/ExoPlayer/issues/1874. + boolean isReadingAhead = playingPeriodHolder.sampleStreams[i] != renderer.getStream(); + boolean isWaitingForNextStream = + !isReadingAhead + && playingPeriodHolder.getNext() != null + && renderer.hasReadStreamToEnd(); + boolean allowsPlayback = + isReadingAhead || isWaitingForNextStream || renderer.isReady() || renderer.isEnded(); + renderersAllowPlayback = renderersAllowPlayback && allowsPlayback; + if (!allowsPlayback) { + renderer.maybeThrowStreamError(); + } + } + } else { + playingPeriodHolder.mediaPeriod.maybeThrowPrepareError(); + } + + long playingPeriodDurationUs = playingPeriodHolder.info.durationUs; + if (renderersEnded + && playingPeriodHolder.prepared + && (playingPeriodDurationUs == C.TIME_UNSET + || playingPeriodDurationUs <= playbackInfo.positionUs) + && playingPeriodHolder.info.isFinal) { + setState(Player.STATE_ENDED); + stopRenderers(); + } else if (playbackInfo.playbackState == Player.STATE_BUFFERING + && shouldTransitionToReadyState(renderersAllowPlayback)) { + setState(Player.STATE_READY); + if (playWhenReady) { + startRenderers(); + } + } else if (playbackInfo.playbackState == Player.STATE_READY + && !(enabledRenderers.length == 0 ? isTimelineReady() : renderersAllowPlayback)) { + rebuffering = playWhenReady; + setState(Player.STATE_BUFFERING); + stopRenderers(); + } + + if (playbackInfo.playbackState == Player.STATE_BUFFERING) { + for (Renderer renderer : enabledRenderers) { + renderer.maybeThrowStreamError(); + } + } + + if ((playWhenReady && playbackInfo.playbackState == Player.STATE_READY) + || playbackInfo.playbackState == Player.STATE_BUFFERING) { + scheduleNextWork(operationStartTimeMs, ACTIVE_INTERVAL_MS); + } else if (enabledRenderers.length != 0 && playbackInfo.playbackState != Player.STATE_ENDED) { + scheduleNextWork(operationStartTimeMs, IDLE_INTERVAL_MS); + } else { + handler.removeMessages(MSG_DO_SOME_WORK); + } + + TraceUtil.endSection(); + } + + private void scheduleNextWork(long thisOperationStartTimeMs, long intervalMs) { + handler.removeMessages(MSG_DO_SOME_WORK); + handler.sendEmptyMessageAtTime(MSG_DO_SOME_WORK, thisOperationStartTimeMs + intervalMs); + } + + private void seekToInternal(SeekPosition seekPosition) throws ExoPlaybackException { + playbackInfoUpdate.incrementPendingOperationAcks(/* operationAcks= */ 1); + + MediaPeriodId periodId; + long periodPositionUs; + long contentPositionUs; + boolean seekPositionAdjusted; + Pair resolvedSeekPosition = + resolveSeekPosition(seekPosition, /* trySubsequentPeriods= */ true); + if (resolvedSeekPosition == null) { + // The seek position was valid for the timeline that it was performed into, but the + // timeline has changed or is not ready and a suitable seek position could not be resolved. + periodId = playbackInfo.getDummyFirstMediaPeriodId(shuffleModeEnabled, window, period); + periodPositionUs = C.TIME_UNSET; + contentPositionUs = C.TIME_UNSET; + seekPositionAdjusted = true; + } else { + // Update the resolved seek position to take ads into account. + Object periodUid = resolvedSeekPosition.first; + contentPositionUs = resolvedSeekPosition.second; + periodId = queue.resolveMediaPeriodIdForAds(periodUid, contentPositionUs); + if (periodId.isAd()) { + periodPositionUs = 0; + seekPositionAdjusted = true; + } else { + periodPositionUs = resolvedSeekPosition.second; + seekPositionAdjusted = seekPosition.windowPositionUs == C.TIME_UNSET; + } + } + + try { + if (mediaSource == null || pendingPrepareCount > 0) { + // Save seek position for later, as we are still waiting for a prepared source. + pendingInitialSeekPosition = seekPosition; + } else if (periodPositionUs == C.TIME_UNSET) { + // End playback, as we didn't manage to find a valid seek position. + setState(Player.STATE_ENDED); + resetInternal( + /* resetRenderers= */ false, + /* releaseMediaSource= */ false, + /* resetPosition= */ true, + /* resetState= */ false, + /* resetError= */ true); + } else { + // Execute the seek in the current media periods. + long newPeriodPositionUs = periodPositionUs; + if (periodId.equals(playbackInfo.periodId)) { + MediaPeriodHolder playingPeriodHolder = queue.getPlayingPeriod(); + if (playingPeriodHolder != null + && playingPeriodHolder.prepared + && newPeriodPositionUs != 0) { + newPeriodPositionUs = + playingPeriodHolder.mediaPeriod.getAdjustedSeekPositionUs( + newPeriodPositionUs, seekParameters); + } + if (C.usToMs(newPeriodPositionUs) == C.usToMs(playbackInfo.positionUs)) { + // Seek will be performed to the current position. Do nothing. + periodPositionUs = playbackInfo.positionUs; + return; + } + } + newPeriodPositionUs = seekToPeriodPosition(periodId, newPeriodPositionUs); + seekPositionAdjusted |= periodPositionUs != newPeriodPositionUs; + periodPositionUs = newPeriodPositionUs; + } + } finally { + playbackInfo = copyWithNewPosition(periodId, periodPositionUs, contentPositionUs); + if (seekPositionAdjusted) { + playbackInfoUpdate.setPositionDiscontinuity(Player.DISCONTINUITY_REASON_SEEK_ADJUSTMENT); + } + } + } + + private long seekToPeriodPosition(MediaPeriodId periodId, long periodPositionUs) + throws ExoPlaybackException { + // Force disable renderers if they are reading from a period other than the one being played. + return seekToPeriodPosition( + periodId, periodPositionUs, queue.getPlayingPeriod() != queue.getReadingPeriod()); + } + + private long seekToPeriodPosition( + MediaPeriodId periodId, long periodPositionUs, boolean forceDisableRenderers) + throws ExoPlaybackException { + stopRenderers(); + rebuffering = false; + if (playbackInfo.playbackState != Player.STATE_IDLE && !playbackInfo.timeline.isEmpty()) { + setState(Player.STATE_BUFFERING); + } + + // Clear the timeline, but keep the requested period if it is already prepared. + MediaPeriodHolder oldPlayingPeriodHolder = queue.getPlayingPeriod(); + MediaPeriodHolder newPlayingPeriodHolder = oldPlayingPeriodHolder; + while (newPlayingPeriodHolder != null) { + if (periodId.equals(newPlayingPeriodHolder.info.id) && newPlayingPeriodHolder.prepared) { + queue.removeAfter(newPlayingPeriodHolder); + break; + } + newPlayingPeriodHolder = queue.advancePlayingPeriod(); + } + + // Disable all renderers if the period being played is changing, if the seek results in negative + // renderer timestamps, or if forced. + if (forceDisableRenderers + || oldPlayingPeriodHolder != newPlayingPeriodHolder + || (newPlayingPeriodHolder != null + && newPlayingPeriodHolder.toRendererTime(periodPositionUs) < 0)) { + for (Renderer renderer : enabledRenderers) { + disableRenderer(renderer); + } + enabledRenderers = new Renderer[0]; + oldPlayingPeriodHolder = null; + if (newPlayingPeriodHolder != null) { + newPlayingPeriodHolder.setRendererOffset(/* rendererPositionOffsetUs= */ 0); + } + } + + // Update the holders. + if (newPlayingPeriodHolder != null) { + updatePlayingPeriodRenderers(oldPlayingPeriodHolder); + if (newPlayingPeriodHolder.hasEnabledTracks) { + periodPositionUs = newPlayingPeriodHolder.mediaPeriod.seekToUs(periodPositionUs); + newPlayingPeriodHolder.mediaPeriod.discardBuffer( + periodPositionUs - backBufferDurationUs, retainBackBufferFromKeyframe); + } + resetRendererPosition(periodPositionUs); + maybeContinueLoading(); + } else { + queue.clear(/* keepFrontPeriodUid= */ true); + // New period has not been prepared. + playbackInfo = + playbackInfo.copyWithTrackInfo(TrackGroupArray.EMPTY, emptyTrackSelectorResult); + resetRendererPosition(periodPositionUs); + } + + handleLoadingMediaPeriodChanged(/* loadingTrackSelectionChanged= */ false); + handler.sendEmptyMessage(MSG_DO_SOME_WORK); + return periodPositionUs; + } + + private void resetRendererPosition(long periodPositionUs) throws ExoPlaybackException { + MediaPeriodHolder playingMediaPeriod = queue.getPlayingPeriod(); + rendererPositionUs = + playingMediaPeriod == null + ? periodPositionUs + : playingMediaPeriod.toRendererTime(periodPositionUs); + mediaClock.resetPosition(rendererPositionUs); + for (Renderer renderer : enabledRenderers) { + renderer.resetPosition(rendererPositionUs); + } + notifyTrackSelectionDiscontinuity(); + } + + private void setPlaybackParametersInternal(PlaybackParameters playbackParameters) { + mediaClock.setPlaybackParameters(playbackParameters); + sendPlaybackParametersChangedInternal( + mediaClock.getPlaybackParameters(), /* acknowledgeCommand= */ true); + } + + private void setSeekParametersInternal(SeekParameters seekParameters) { + this.seekParameters = seekParameters; + } + + private void setForegroundModeInternal( + boolean foregroundMode, @Nullable AtomicBoolean processedFlag) { + if (this.foregroundMode != foregroundMode) { + this.foregroundMode = foregroundMode; + if (!foregroundMode) { + for (Renderer renderer : renderers) { + if (renderer.getState() == Renderer.STATE_DISABLED) { + renderer.reset(); + } + } + } + } + if (processedFlag != null) { + synchronized (this) { + processedFlag.set(true); + notifyAll(); + } + } + } + + private void stopInternal( + boolean forceResetRenderers, boolean resetPositionAndState, boolean acknowledgeStop) { + resetInternal( + /* resetRenderers= */ forceResetRenderers || !foregroundMode, + /* releaseMediaSource= */ true, + /* resetPosition= */ resetPositionAndState, + /* resetState= */ resetPositionAndState, + /* resetError= */ resetPositionAndState); + playbackInfoUpdate.incrementPendingOperationAcks( + pendingPrepareCount + (acknowledgeStop ? 1 : 0)); + pendingPrepareCount = 0; + loadControl.onStopped(); + setState(Player.STATE_IDLE); + } + + private void releaseInternal() { + resetInternal( + /* resetRenderers= */ true, + /* releaseMediaSource= */ true, + /* resetPosition= */ true, + /* resetState= */ true, + /* resetError= */ false); + loadControl.onReleased(); + setState(Player.STATE_IDLE); + internalPlaybackThread.quit(); + synchronized (this) { + released = true; + notifyAll(); + } + } + + private void resetInternal( + boolean resetRenderers, + boolean releaseMediaSource, + boolean resetPosition, + boolean resetState, + boolean resetError) { + handler.removeMessages(MSG_DO_SOME_WORK); + rebuffering = false; + mediaClock.stop(); + rendererPositionUs = 0; + for (Renderer renderer : enabledRenderers) { + try { + disableRenderer(renderer); + } catch (ExoPlaybackException | RuntimeException e) { + // There's nothing we can do. + Log.e(TAG, "Disable failed.", e); + } + } + if (resetRenderers) { + for (Renderer renderer : renderers) { + try { + renderer.reset(); + } catch (RuntimeException e) { + // There's nothing we can do. + Log.e(TAG, "Reset failed.", e); + } + } + } + enabledRenderers = new Renderer[0]; + + if (resetPosition) { + pendingInitialSeekPosition = null; + } else if (resetState) { + // When resetting the state, also reset the period-based PlaybackInfo position and convert + // existing position to initial seek instead. + resetPosition = true; + if (pendingInitialSeekPosition == null && !playbackInfo.timeline.isEmpty()) { + playbackInfo.timeline.getPeriodByUid(playbackInfo.periodId.periodUid, period); + long windowPositionUs = playbackInfo.positionUs + period.getPositionInWindowUs(); + pendingInitialSeekPosition = + new SeekPosition(Timeline.EMPTY, period.windowIndex, windowPositionUs); + } + } + + queue.clear(/* keepFrontPeriodUid= */ !resetState); + shouldContinueLoading = false; + if (resetState) { + queue.setTimeline(Timeline.EMPTY); + for (PendingMessageInfo pendingMessageInfo : pendingMessages) { + pendingMessageInfo.message.markAsProcessed(/* isDelivered= */ false); + } + pendingMessages.clear(); + nextPendingMessageIndex = 0; + } + MediaPeriodId mediaPeriodId = + resetPosition + ? playbackInfo.getDummyFirstMediaPeriodId(shuffleModeEnabled, window, period) + : playbackInfo.periodId; + // Set the start position to TIME_UNSET so that a subsequent seek to 0 isn't ignored. + long startPositionUs = resetPosition ? C.TIME_UNSET : playbackInfo.positionUs; + long contentPositionUs = resetPosition ? C.TIME_UNSET : playbackInfo.contentPositionUs; + playbackInfo = + new PlaybackInfo( + resetState ? Timeline.EMPTY : playbackInfo.timeline, + mediaPeriodId, + startPositionUs, + contentPositionUs, + playbackInfo.playbackState, + resetError ? null : playbackInfo.playbackError, + /* isLoading= */ false, + resetState ? TrackGroupArray.EMPTY : playbackInfo.trackGroups, + resetState ? emptyTrackSelectorResult : playbackInfo.trackSelectorResult, + mediaPeriodId, + startPositionUs, + /* totalBufferedDurationUs= */ 0, + startPositionUs); + if (releaseMediaSource) { + if (mediaSource != null) { + mediaSource.releaseSource(/* caller= */ this); + mediaSource = null; + } + } + } + + private void sendMessageInternal(PlayerMessage message) throws ExoPlaybackException { + if (message.getPositionMs() == C.TIME_UNSET) { + // If no delivery time is specified, trigger immediate message delivery. + sendMessageToTarget(message); + } else if (mediaSource == null || pendingPrepareCount > 0) { + // Still waiting for initial timeline to resolve position. + pendingMessages.add(new PendingMessageInfo(message)); + } else { + PendingMessageInfo pendingMessageInfo = new PendingMessageInfo(message); + if (resolvePendingMessagePosition(pendingMessageInfo)) { + pendingMessages.add(pendingMessageInfo); + // Ensure new message is inserted according to playback order. + Collections.sort(pendingMessages); + } else { + message.markAsProcessed(/* isDelivered= */ false); + } + } + } + + private void sendMessageToTarget(PlayerMessage message) throws ExoPlaybackException { + if (message.getHandler().getLooper() == handler.getLooper()) { + deliverMessage(message); + if (playbackInfo.playbackState == Player.STATE_READY + || playbackInfo.playbackState == Player.STATE_BUFFERING) { + // The message may have caused something to change that now requires us to do work. + handler.sendEmptyMessage(MSG_DO_SOME_WORK); + } + } else { + handler.obtainMessage(MSG_SEND_MESSAGE_TO_TARGET_THREAD, message).sendToTarget(); + } + } + + private void sendMessageToTargetThread(final PlayerMessage message) { + Handler handler = message.getHandler(); + if (!handler.getLooper().getThread().isAlive()) { + Log.w("TAG", "Trying to send message on a dead thread."); + message.markAsProcessed(/* isDelivered= */ false); + return; + } + handler.post( + () -> { + try { + deliverMessage(message); + } catch (ExoPlaybackException e) { + Log.e(TAG, "Unexpected error delivering message on external thread.", e); + throw new RuntimeException(e); + } + }); + } + + private void deliverMessage(PlayerMessage message) throws ExoPlaybackException { + if (message.isCanceled()) { + return; + } + try { + message.getTarget().handleMessage(message.getType(), message.getPayload()); + } finally { + message.markAsProcessed(/* isDelivered= */ true); + } + } + + private void resolvePendingMessagePositions() { + for (int i = pendingMessages.size() - 1; i >= 0; i--) { + if (!resolvePendingMessagePosition(pendingMessages.get(i))) { + // Unable to resolve a new position for the message. Remove it. + pendingMessages.get(i).message.markAsProcessed(/* isDelivered= */ false); + pendingMessages.remove(i); + } + } + // Re-sort messages by playback order. + Collections.sort(pendingMessages); + } + + private boolean resolvePendingMessagePosition(PendingMessageInfo pendingMessageInfo) { + if (pendingMessageInfo.resolvedPeriodUid == null) { + // Position is still unresolved. Try to find window in current timeline. + Pair periodPosition = + resolveSeekPosition( + new SeekPosition( + pendingMessageInfo.message.getTimeline(), + pendingMessageInfo.message.getWindowIndex(), + C.msToUs(pendingMessageInfo.message.getPositionMs())), + /* trySubsequentPeriods= */ false); + if (periodPosition == null) { + return false; + } + pendingMessageInfo.setResolvedPosition( + playbackInfo.timeline.getIndexOfPeriod(periodPosition.first), + periodPosition.second, + periodPosition.first); + } else { + // Position has been resolved for a previous timeline. Try to find the updated period index. + int index = playbackInfo.timeline.getIndexOfPeriod(pendingMessageInfo.resolvedPeriodUid); + if (index == C.INDEX_UNSET) { + return false; + } + pendingMessageInfo.resolvedPeriodIndex = index; + } + return true; + } + + private void maybeTriggerPendingMessages(long oldPeriodPositionUs, long newPeriodPositionUs) + throws ExoPlaybackException { + if (pendingMessages.isEmpty() || playbackInfo.periodId.isAd()) { + return; + } + // If this is the first call from the start position, include oldPeriodPositionUs in potential + // trigger positions, but make sure we deliver it only once. + if (playbackInfo.startPositionUs == oldPeriodPositionUs + && deliverPendingMessageAtStartPositionRequired) { + oldPeriodPositionUs--; + } + deliverPendingMessageAtStartPositionRequired = false; + + // Correct next index if necessary (e.g. after seeking, timeline changes, or new messages) + int currentPeriodIndex = + playbackInfo.timeline.getIndexOfPeriod(playbackInfo.periodId.periodUid); + PendingMessageInfo previousInfo = + nextPendingMessageIndex > 0 ? pendingMessages.get(nextPendingMessageIndex - 1) : null; + while (previousInfo != null + && (previousInfo.resolvedPeriodIndex > currentPeriodIndex + || (previousInfo.resolvedPeriodIndex == currentPeriodIndex + && previousInfo.resolvedPeriodTimeUs > oldPeriodPositionUs))) { + nextPendingMessageIndex--; + previousInfo = + nextPendingMessageIndex > 0 ? pendingMessages.get(nextPendingMessageIndex - 1) : null; + } + PendingMessageInfo nextInfo = + nextPendingMessageIndex < pendingMessages.size() + ? pendingMessages.get(nextPendingMessageIndex) + : null; + while (nextInfo != null + && nextInfo.resolvedPeriodUid != null + && (nextInfo.resolvedPeriodIndex < currentPeriodIndex + || (nextInfo.resolvedPeriodIndex == currentPeriodIndex + && nextInfo.resolvedPeriodTimeUs <= oldPeriodPositionUs))) { + nextPendingMessageIndex++; + nextInfo = + nextPendingMessageIndex < pendingMessages.size() + ? pendingMessages.get(nextPendingMessageIndex) + : null; + } + // Check if any message falls within the covered time span. + while (nextInfo != null + && nextInfo.resolvedPeriodUid != null + && nextInfo.resolvedPeriodIndex == currentPeriodIndex + && nextInfo.resolvedPeriodTimeUs > oldPeriodPositionUs + && nextInfo.resolvedPeriodTimeUs <= newPeriodPositionUs) { + try { + sendMessageToTarget(nextInfo.message); + } finally { + if (nextInfo.message.getDeleteAfterDelivery() || nextInfo.message.isCanceled()) { + pendingMessages.remove(nextPendingMessageIndex); + } else { + nextPendingMessageIndex++; + } + } + nextInfo = + nextPendingMessageIndex < pendingMessages.size() + ? pendingMessages.get(nextPendingMessageIndex) + : null; + } + } + + private void ensureStopped(Renderer renderer) throws ExoPlaybackException { + if (renderer.getState() == Renderer.STATE_STARTED) { + renderer.stop(); + } + } + + private void disableRenderer(Renderer renderer) throws ExoPlaybackException { + mediaClock.onRendererDisabled(renderer); + ensureStopped(renderer); + renderer.disable(); + } + + private void reselectTracksInternal() throws ExoPlaybackException { + float playbackSpeed = mediaClock.getPlaybackParameters().speed; + // Reselect tracks on each period in turn, until the selection changes. + MediaPeriodHolder periodHolder = queue.getPlayingPeriod(); + MediaPeriodHolder readingPeriodHolder = queue.getReadingPeriod(); + boolean selectionsChangedForReadPeriod = true; + TrackSelectorResult newTrackSelectorResult; + while (true) { + if (periodHolder == null || !periodHolder.prepared) { + // The reselection did not change any prepared periods. + return; + } + newTrackSelectorResult = periodHolder.selectTracks(playbackSpeed, playbackInfo.timeline); + if (!newTrackSelectorResult.isEquivalent(periodHolder.getTrackSelectorResult())) { + // Selected tracks have changed for this period. + break; + } + if (periodHolder == readingPeriodHolder) { + // The track reselection didn't affect any period that has been read. + selectionsChangedForReadPeriod = false; + } + periodHolder = periodHolder.getNext(); + } + + if (selectionsChangedForReadPeriod) { + // Update streams and rebuffer for the new selection, recreating all streams if reading ahead. + MediaPeriodHolder playingPeriodHolder = queue.getPlayingPeriod(); + boolean recreateStreams = queue.removeAfter(playingPeriodHolder); + + boolean[] streamResetFlags = new boolean[renderers.length]; + long periodPositionUs = + playingPeriodHolder.applyTrackSelection( + newTrackSelectorResult, playbackInfo.positionUs, recreateStreams, streamResetFlags); + if (playbackInfo.playbackState != Player.STATE_ENDED + && periodPositionUs != playbackInfo.positionUs) { + playbackInfo = + copyWithNewPosition( + playbackInfo.periodId, periodPositionUs, playbackInfo.contentPositionUs); + playbackInfoUpdate.setPositionDiscontinuity(Player.DISCONTINUITY_REASON_INTERNAL); + resetRendererPosition(periodPositionUs); + } + + int enabledRendererCount = 0; + boolean[] rendererWasEnabledFlags = new boolean[renderers.length]; + for (int i = 0; i < renderers.length; i++) { + Renderer renderer = renderers[i]; + rendererWasEnabledFlags[i] = renderer.getState() != Renderer.STATE_DISABLED; + SampleStream sampleStream = playingPeriodHolder.sampleStreams[i]; + if (sampleStream != null) { + enabledRendererCount++; + } + if (rendererWasEnabledFlags[i]) { + if (sampleStream != renderer.getStream()) { + // We need to disable the renderer. + disableRenderer(renderer); + } else if (streamResetFlags[i]) { + // The renderer will continue to consume from its current stream, but needs to be reset. + renderer.resetPosition(rendererPositionUs); + } + } + } + playbackInfo = + playbackInfo.copyWithTrackInfo( + playingPeriodHolder.getTrackGroups(), playingPeriodHolder.getTrackSelectorResult()); + enableRenderers(rendererWasEnabledFlags, enabledRendererCount); + } else { + // Release and re-prepare/buffer periods after the one whose selection changed. + queue.removeAfter(periodHolder); + if (periodHolder.prepared) { + long loadingPeriodPositionUs = + Math.max( + periodHolder.info.startPositionUs, periodHolder.toPeriodTime(rendererPositionUs)); + periodHolder.applyTrackSelection(newTrackSelectorResult, loadingPeriodPositionUs, false); + } + } + handleLoadingMediaPeriodChanged(/* loadingTrackSelectionChanged= */ true); + if (playbackInfo.playbackState != Player.STATE_ENDED) { + maybeContinueLoading(); + updatePlaybackPositions(); + handler.sendEmptyMessage(MSG_DO_SOME_WORK); + } + } + + private void updateTrackSelectionPlaybackSpeed(float playbackSpeed) { + MediaPeriodHolder periodHolder = queue.getPlayingPeriod(); + while (periodHolder != null) { + TrackSelection[] trackSelections = periodHolder.getTrackSelectorResult().selections.getAll(); + for (TrackSelection trackSelection : trackSelections) { + if (trackSelection != null) { + trackSelection.onPlaybackSpeed(playbackSpeed); + } + } + periodHolder = periodHolder.getNext(); + } + } + + private void notifyTrackSelectionDiscontinuity() { + MediaPeriodHolder periodHolder = queue.getPlayingPeriod(); + while (periodHolder != null) { + TrackSelection[] trackSelections = periodHolder.getTrackSelectorResult().selections.getAll(); + for (TrackSelection trackSelection : trackSelections) { + if (trackSelection != null) { + trackSelection.onDiscontinuity(); + } + } + periodHolder = periodHolder.getNext(); + } + } + + private boolean shouldTransitionToReadyState(boolean renderersReadyOrEnded) { + if (enabledRenderers.length == 0) { + // If there are no enabled renderers, determine whether we're ready based on the timeline. + return isTimelineReady(); + } + if (!renderersReadyOrEnded) { + return false; + } + if (!playbackInfo.isLoading) { + // Renderers are ready and we're not loading. Transition to ready, since the alternative is + // getting stuck waiting for additional media that's not being loaded. + return true; + } + // Renderers are ready and we're loading. Ask the LoadControl whether to transition. + MediaPeriodHolder loadingHolder = queue.getLoadingPeriod(); + boolean bufferedToEnd = loadingHolder.isFullyBuffered() && loadingHolder.info.isFinal; + return bufferedToEnd + || loadControl.shouldStartPlayback( + getTotalBufferedDurationUs(), mediaClock.getPlaybackParameters().speed, rebuffering); + } + + private boolean isTimelineReady() { + MediaPeriodHolder playingPeriodHolder = queue.getPlayingPeriod(); + long playingPeriodDurationUs = playingPeriodHolder.info.durationUs; + return playingPeriodHolder.prepared + && (playingPeriodDurationUs == C.TIME_UNSET + || playbackInfo.positionUs < playingPeriodDurationUs); + } + + private void maybeThrowSourceInfoRefreshError() throws IOException { + MediaPeriodHolder loadingPeriodHolder = queue.getLoadingPeriod(); + if (loadingPeriodHolder != null) { + // Defer throwing until we read all available media periods. + for (Renderer renderer : enabledRenderers) { + if (!renderer.hasReadStreamToEnd()) { + return; + } + } + } + mediaSource.maybeThrowSourceInfoRefreshError(); + } + + private void handleSourceInfoRefreshed(MediaSourceRefreshInfo sourceRefreshInfo) + throws ExoPlaybackException { + if (sourceRefreshInfo.source != mediaSource) { + // Stale event. + return; + } + playbackInfoUpdate.incrementPendingOperationAcks(pendingPrepareCount); + pendingPrepareCount = 0; + + Timeline oldTimeline = playbackInfo.timeline; + Timeline timeline = sourceRefreshInfo.timeline; + queue.setTimeline(timeline); + playbackInfo = playbackInfo.copyWithTimeline(timeline); + resolvePendingMessagePositions(); + + MediaPeriodId newPeriodId = playbackInfo.periodId; + long oldContentPositionUs = + playbackInfo.periodId.isAd() ? playbackInfo.contentPositionUs : playbackInfo.positionUs; + long newContentPositionUs = oldContentPositionUs; + if (pendingInitialSeekPosition != null) { + // Resolve initial seek position. + Pair periodPosition = + resolveSeekPosition(pendingInitialSeekPosition, /* trySubsequentPeriods= */ true); + pendingInitialSeekPosition = null; + if (periodPosition == null) { + // The seek position was valid for the timeline that it was performed into, but the + // timeline has changed and a suitable seek position could not be resolved in the new one. + handleSourceInfoRefreshEndedPlayback(); + return; + } + newContentPositionUs = periodPosition.second; + newPeriodId = queue.resolveMediaPeriodIdForAds(periodPosition.first, newContentPositionUs); + } else if (oldContentPositionUs == C.TIME_UNSET && !timeline.isEmpty()) { + // Resolve unset start position to default position. + Pair defaultPosition = + getPeriodPosition( + timeline, timeline.getFirstWindowIndex(shuffleModeEnabled), C.TIME_UNSET); + newPeriodId = queue.resolveMediaPeriodIdForAds(defaultPosition.first, defaultPosition.second); + if (!newPeriodId.isAd()) { + // Keep unset start position if we need to play an ad first. + newContentPositionUs = defaultPosition.second; + } + } else if (timeline.getIndexOfPeriod(newPeriodId.periodUid) == C.INDEX_UNSET) { + // The current period isn't in the new timeline. Attempt to resolve a subsequent period whose + // window we can restart from. + Object newPeriodUid = resolveSubsequentPeriod(newPeriodId.periodUid, oldTimeline, timeline); + if (newPeriodUid == null) { + // We failed to resolve a suitable restart position. + handleSourceInfoRefreshEndedPlayback(); + return; + } + // We resolved a subsequent period. Start at the default position in the corresponding window. + Pair defaultPosition = + getPeriodPosition( + timeline, timeline.getPeriodByUid(newPeriodUid, period).windowIndex, C.TIME_UNSET); + newContentPositionUs = defaultPosition.second; + newPeriodId = queue.resolveMediaPeriodIdForAds(defaultPosition.first, newContentPositionUs); + } else { + // Recheck if the current ad still needs to be played or if we need to start playing an ad. + newPeriodId = + queue.resolveMediaPeriodIdForAds(playbackInfo.periodId.periodUid, newContentPositionUs); + if (!playbackInfo.periodId.isAd() && !newPeriodId.isAd()) { + // Drop update if we keep playing the same content (MediaPeriod.periodUid are identical) and + // only MediaPeriodId.nextAdGroupIndex may have changed. This postpones a potential + // discontinuity until we reach the former next ad group position. + newPeriodId = playbackInfo.periodId; + } + } + + if (playbackInfo.periodId.equals(newPeriodId) && oldContentPositionUs == newContentPositionUs) { + // We can keep the current playing period. Update the rest of the queued periods. + if (!queue.updateQueuedPeriods(rendererPositionUs, getMaxRendererReadPositionUs())) { + seekToCurrentPosition(/* sendDiscontinuity= */ false); + } + } else { + // Something changed. Seek to new start position. + MediaPeriodHolder periodHolder = queue.getPlayingPeriod(); + if (periodHolder != null) { + // Update the new playing media period info if it already exists. + while (periodHolder.getNext() != null) { + periodHolder = periodHolder.getNext(); + if (periodHolder.info.id.equals(newPeriodId)) { + periodHolder.info = queue.getUpdatedMediaPeriodInfo(periodHolder.info); + } + } + } + // Actually do the seek. + long newPositionUs = newPeriodId.isAd() ? 0 : newContentPositionUs; + long seekedToPositionUs = seekToPeriodPosition(newPeriodId, newPositionUs); + playbackInfo = copyWithNewPosition(newPeriodId, seekedToPositionUs, newContentPositionUs); + } + handleLoadingMediaPeriodChanged(/* loadingTrackSelectionChanged= */ false); + } + + private long getMaxRendererReadPositionUs() { + MediaPeriodHolder readingHolder = queue.getReadingPeriod(); + if (readingHolder == null) { + return 0; + } + long maxReadPositionUs = readingHolder.getRendererOffset(); + if (!readingHolder.prepared) { + return maxReadPositionUs; + } + for (int i = 0; i < renderers.length; i++) { + if (renderers[i].getState() == Renderer.STATE_DISABLED + || renderers[i].getStream() != readingHolder.sampleStreams[i]) { + // Ignore disabled renderers and renderers with sample streams from previous periods. + continue; + } + long readingPositionUs = renderers[i].getReadingPositionUs(); + if (readingPositionUs == C.TIME_END_OF_SOURCE) { + return C.TIME_END_OF_SOURCE; + } else { + maxReadPositionUs = Math.max(readingPositionUs, maxReadPositionUs); + } + } + return maxReadPositionUs; + } + + private void handleSourceInfoRefreshEndedPlayback() { + if (playbackInfo.playbackState != Player.STATE_IDLE) { + setState(Player.STATE_ENDED); + } + // Reset, but retain the source so that it can still be used should a seek occur. + resetInternal( + /* resetRenderers= */ false, + /* releaseMediaSource= */ false, + /* resetPosition= */ true, + /* resetState= */ false, + /* resetError= */ true); + } + + /** + * Given a period index into an old timeline, finds the first subsequent period that also exists + * in a new timeline. The uid of this period in the new timeline is returned. + * + * @param oldPeriodUid The index of the period in the old timeline. + * @param oldTimeline The old timeline. + * @param newTimeline The new timeline. + * @return The uid in the new timeline of the first subsequent period, or null if no such period + * was found. + */ + private @Nullable Object resolveSubsequentPeriod( + Object oldPeriodUid, Timeline oldTimeline, Timeline newTimeline) { + int oldPeriodIndex = oldTimeline.getIndexOfPeriod(oldPeriodUid); + int newPeriodIndex = C.INDEX_UNSET; + int maxIterations = oldTimeline.getPeriodCount(); + for (int i = 0; i < maxIterations && newPeriodIndex == C.INDEX_UNSET; i++) { + oldPeriodIndex = + oldTimeline.getNextPeriodIndex( + oldPeriodIndex, period, window, repeatMode, shuffleModeEnabled); + if (oldPeriodIndex == C.INDEX_UNSET) { + // We've reached the end of the old timeline. + break; + } + newPeriodIndex = newTimeline.getIndexOfPeriod(oldTimeline.getUidOfPeriod(oldPeriodIndex)); + } + return newPeriodIndex == C.INDEX_UNSET ? null : newTimeline.getUidOfPeriod(newPeriodIndex); + } + + /** + * Converts a {@link SeekPosition} into the corresponding (periodUid, periodPositionUs) for the + * internal timeline. + * + * @param seekPosition The position to resolve. + * @param trySubsequentPeriods Whether the position can be resolved to a subsequent matching + * period if the original period is no longer available. + * @return The resolved position, or null if resolution was not successful. + * @throws IllegalSeekPositionException If the window index of the seek position is outside the + * bounds of the timeline. + */ + @Nullable + private Pair resolveSeekPosition( + SeekPosition seekPosition, boolean trySubsequentPeriods) { + Timeline timeline = playbackInfo.timeline; + Timeline seekTimeline = seekPosition.timeline; + if (timeline.isEmpty()) { + // We don't have a valid timeline yet, so we can't resolve the position. + return null; + } + if (seekTimeline.isEmpty()) { + // The application performed a blind seek with an empty timeline (most likely based on + // knowledge of what the future timeline will be). Use the internal timeline. + seekTimeline = timeline; + } + // Map the SeekPosition to a position in the corresponding timeline. + Pair periodPosition; + try { + periodPosition = + seekTimeline.getPeriodPosition( + window, period, seekPosition.windowIndex, seekPosition.windowPositionUs); + } catch (IndexOutOfBoundsException e) { + // The window index of the seek position was outside the bounds of the timeline. + return null; + } + if (timeline == seekTimeline) { + // Our internal timeline is the seek timeline, so the mapped position is correct. + return periodPosition; + } + // Attempt to find the mapped period in the internal timeline. + int periodIndex = timeline.getIndexOfPeriod(periodPosition.first); + if (periodIndex != C.INDEX_UNSET) { + // We successfully located the period in the internal timeline. + return periodPosition; + } + if (trySubsequentPeriods) { + // Try and find a subsequent period from the seek timeline in the internal timeline. + @Nullable + Object periodUid = resolveSubsequentPeriod(periodPosition.first, seekTimeline, timeline); + if (periodUid != null) { + // We found one. Use the default position of the corresponding window. + return getPeriodPosition( + timeline, timeline.getPeriodByUid(periodUid, period).windowIndex, C.TIME_UNSET); + } + } + // We didn't find one. Give up. + return null; + } + + /** + * Calls {@link Timeline#getPeriodPosition(Timeline.Window, Timeline.Period, int, long)} using the + * current timeline. + */ + private Pair getPeriodPosition( + Timeline timeline, int windowIndex, long windowPositionUs) { + return timeline.getPeriodPosition(window, period, windowIndex, windowPositionUs); + } + + private void updatePeriods() throws ExoPlaybackException, IOException { + if (mediaSource == null) { + // The player has no media source yet. + return; + } + if (pendingPrepareCount > 0) { + // We're waiting to get information about periods. + mediaSource.maybeThrowSourceInfoRefreshError(); + return; + } + maybeUpdateLoadingPeriod(); + maybeUpdateReadingPeriod(); + maybeUpdatePlayingPeriod(); + } + + private void maybeUpdateLoadingPeriod() throws ExoPlaybackException, IOException { + queue.reevaluateBuffer(rendererPositionUs); + if (queue.shouldLoadNextMediaPeriod()) { + MediaPeriodInfo info = queue.getNextMediaPeriodInfo(rendererPositionUs, playbackInfo); + if (info == null) { + maybeThrowSourceInfoRefreshError(); + } else { + MediaPeriodHolder mediaPeriodHolder = + queue.enqueueNextMediaPeriodHolder( + rendererCapabilities, + trackSelector, + loadControl.getAllocator(), + mediaSource, + info, + emptyTrackSelectorResult); + mediaPeriodHolder.mediaPeriod.prepare(this, info.startPositionUs); + if (queue.getPlayingPeriod() == mediaPeriodHolder) { + resetRendererPosition(mediaPeriodHolder.getStartPositionRendererTime()); + } + handleLoadingMediaPeriodChanged(/* loadingTrackSelectionChanged= */ false); + } + } + if (shouldContinueLoading) { + shouldContinueLoading = isLoadingPossible(); + updateIsLoading(); + } else { + maybeContinueLoading(); + } + } + + private void maybeUpdateReadingPeriod() throws ExoPlaybackException { + MediaPeriodHolder readingPeriodHolder = queue.getReadingPeriod(); + if (readingPeriodHolder == null) { + return; + } + + if (readingPeriodHolder.getNext() == null) { + // We don't have a successor to advance the reading period to. + if (readingPeriodHolder.info.isFinal) { + for (int i = 0; i < renderers.length; i++) { + Renderer renderer = renderers[i]; + SampleStream sampleStream = readingPeriodHolder.sampleStreams[i]; + // Defer setting the stream as final until the renderer has actually consumed the whole + // stream in case of playlist changes that cause the stream to be no longer final. + if (sampleStream != null + && renderer.getStream() == sampleStream + && renderer.hasReadStreamToEnd()) { + renderer.setCurrentStreamFinal(); + } + } + } + return; + } + + if (!hasReadingPeriodFinishedReading()) { + return; + } + + if (!readingPeriodHolder.getNext().prepared) { + // The successor is not prepared yet. + return; + } + + TrackSelectorResult oldTrackSelectorResult = readingPeriodHolder.getTrackSelectorResult(); + readingPeriodHolder = queue.advanceReadingPeriod(); + TrackSelectorResult newTrackSelectorResult = readingPeriodHolder.getTrackSelectorResult(); + + if (readingPeriodHolder.mediaPeriod.readDiscontinuity() != C.TIME_UNSET) { + // The new period starts with a discontinuity, so the renderers will play out all data, then + // be disabled and re-enabled when they start playing the next period. + setAllRendererStreamsFinal(); + return; + } + for (int i = 0; i < renderers.length; i++) { + Renderer renderer = renderers[i]; + boolean rendererWasEnabled = oldTrackSelectorResult.isRendererEnabled(i); + if (rendererWasEnabled && !renderer.isCurrentStreamFinal()) { + // The renderer is enabled and its stream is not final, so we still have a chance to replace + // the sample streams. + TrackSelection newSelection = newTrackSelectorResult.selections.get(i); + boolean newRendererEnabled = newTrackSelectorResult.isRendererEnabled(i); + boolean isNoSampleRenderer = rendererCapabilities[i].getTrackType() == C.TRACK_TYPE_NONE; + RendererConfiguration oldConfig = oldTrackSelectorResult.rendererConfigurations[i]; + RendererConfiguration newConfig = newTrackSelectorResult.rendererConfigurations[i]; + if (newRendererEnabled && newConfig.equals(oldConfig) && !isNoSampleRenderer) { + // Replace the renderer's SampleStream so the transition to playing the next period can + // be seamless. + // This should be avoided for no-sample renderer, because skipping ahead for such + // renderer doesn't have any benefit (the renderer does not consume the sample stream), + // and it will change the provided rendererOffsetUs while the renderer is still + // rendering from the playing media period. + Format[] formats = getFormats(newSelection); + renderer.replaceStream( + formats, + readingPeriodHolder.sampleStreams[i], + readingPeriodHolder.getRendererOffset()); + } else { + // The renderer will be disabled when transitioning to playing the next period, because + // there's no new selection, or because a configuration change is required, or because + // it's a no-sample renderer for which rendererOffsetUs should be updated only when + // starting to play the next period. Mark the SampleStream as final to play out any + // remaining data. + renderer.setCurrentStreamFinal(); + } + } + } + } + + private void maybeUpdatePlayingPeriod() throws ExoPlaybackException { + boolean advancedPlayingPeriod = false; + while (shouldAdvancePlayingPeriod()) { + if (advancedPlayingPeriod) { + // If we advance more than one period at a time, notify listeners after each update. + maybeNotifyPlaybackInfoChanged(); + } + MediaPeriodHolder oldPlayingPeriodHolder = queue.getPlayingPeriod(); + if (oldPlayingPeriodHolder == queue.getReadingPeriod()) { + // The reading period hasn't advanced yet, so we can't seamlessly replace the SampleStreams + // anymore and need to re-enable the renderers. Set all current streams final to do that. + setAllRendererStreamsFinal(); + } + MediaPeriodHolder newPlayingPeriodHolder = queue.advancePlayingPeriod(); + updatePlayingPeriodRenderers(oldPlayingPeriodHolder); + playbackInfo = + copyWithNewPosition( + newPlayingPeriodHolder.info.id, + newPlayingPeriodHolder.info.startPositionUs, + newPlayingPeriodHolder.info.contentPositionUs); + int discontinuityReason = + oldPlayingPeriodHolder.info.isLastInTimelinePeriod + ? Player.DISCONTINUITY_REASON_PERIOD_TRANSITION + : Player.DISCONTINUITY_REASON_AD_INSERTION; + playbackInfoUpdate.setPositionDiscontinuity(discontinuityReason); + updatePlaybackPositions(); + advancedPlayingPeriod = true; + } + } + + private boolean shouldAdvancePlayingPeriod() { + if (!playWhenReady) { + return false; + } + MediaPeriodHolder playingPeriodHolder = queue.getPlayingPeriod(); + if (playingPeriodHolder == null) { + return false; + } + MediaPeriodHolder nextPlayingPeriodHolder = playingPeriodHolder.getNext(); + if (nextPlayingPeriodHolder == null) { + return false; + } + MediaPeriodHolder readingPeriodHolder = queue.getReadingPeriod(); + if (playingPeriodHolder == readingPeriodHolder && !hasReadingPeriodFinishedReading()) { + return false; + } + return rendererPositionUs >= nextPlayingPeriodHolder.getStartPositionRendererTime(); + } + + private boolean hasReadingPeriodFinishedReading() { + MediaPeriodHolder readingPeriodHolder = queue.getReadingPeriod(); + if (!readingPeriodHolder.prepared) { + return false; + } + for (int i = 0; i < renderers.length; i++) { + Renderer renderer = renderers[i]; + SampleStream sampleStream = readingPeriodHolder.sampleStreams[i]; + if (renderer.getStream() != sampleStream + || (sampleStream != null && !renderer.hasReadStreamToEnd())) { + // The current reading period is still being read by at least one renderer. + return false; + } + } + return true; + } + + private void setAllRendererStreamsFinal() { + for (Renderer renderer : renderers) { + if (renderer.getStream() != null) { + renderer.setCurrentStreamFinal(); + } + } + } + + private void handlePeriodPrepared(MediaPeriod mediaPeriod) throws ExoPlaybackException { + if (!queue.isLoading(mediaPeriod)) { + // Stale event. + return; + } + MediaPeriodHolder loadingPeriodHolder = queue.getLoadingPeriod(); + loadingPeriodHolder.handlePrepared( + mediaClock.getPlaybackParameters().speed, playbackInfo.timeline); + updateLoadControlTrackSelection( + loadingPeriodHolder.getTrackGroups(), loadingPeriodHolder.getTrackSelectorResult()); + if (loadingPeriodHolder == queue.getPlayingPeriod()) { + // This is the first prepared period, so update the position and the renderers. + resetRendererPosition(loadingPeriodHolder.info.startPositionUs); + updatePlayingPeriodRenderers(/* oldPlayingPeriodHolder= */ null); + } + maybeContinueLoading(); + } + + private void handleContinueLoadingRequested(MediaPeriod mediaPeriod) { + if (!queue.isLoading(mediaPeriod)) { + // Stale event. + return; + } + queue.reevaluateBuffer(rendererPositionUs); + maybeContinueLoading(); + } + + private void handlePlaybackParameters( + PlaybackParameters playbackParameters, boolean acknowledgeCommand) + throws ExoPlaybackException { + eventHandler + .obtainMessage( + MSG_PLAYBACK_PARAMETERS_CHANGED, acknowledgeCommand ? 1 : 0, 0, playbackParameters) + .sendToTarget(); + updateTrackSelectionPlaybackSpeed(playbackParameters.speed); + for (Renderer renderer : renderers) { + if (renderer != null) { + renderer.setOperatingRate(playbackParameters.speed); + } + } + } + + private void maybeContinueLoading() { + shouldContinueLoading = shouldContinueLoading(); + if (shouldContinueLoading) { + queue.getLoadingPeriod().continueLoading(rendererPositionUs); + } + updateIsLoading(); + } + + private boolean shouldContinueLoading() { + if (!isLoadingPossible()) { + return false; + } + long bufferedDurationUs = + getTotalBufferedDurationUs(queue.getLoadingPeriod().getNextLoadPositionUs()); + float playbackSpeed = mediaClock.getPlaybackParameters().speed; + return loadControl.shouldContinueLoading(bufferedDurationUs, playbackSpeed); + } + + private boolean isLoadingPossible() { + MediaPeriodHolder loadingPeriodHolder = queue.getLoadingPeriod(); + if (loadingPeriodHolder == null) { + return false; + } + long nextLoadPositionUs = loadingPeriodHolder.getNextLoadPositionUs(); + if (nextLoadPositionUs == C.TIME_END_OF_SOURCE) { + return false; + } + return true; + } + + private void updateIsLoading() { + MediaPeriodHolder loadingPeriod = queue.getLoadingPeriod(); + boolean isLoading = + shouldContinueLoading || (loadingPeriod != null && loadingPeriod.mediaPeriod.isLoading()); + if (isLoading != playbackInfo.isLoading) { + playbackInfo = playbackInfo.copyWithIsLoading(isLoading); + } + } + + private PlaybackInfo copyWithNewPosition( + MediaPeriodId mediaPeriodId, long positionUs, long contentPositionUs) { + deliverPendingMessageAtStartPositionRequired = true; + return playbackInfo.copyWithNewPosition( + mediaPeriodId, positionUs, contentPositionUs, getTotalBufferedDurationUs()); + } + + @SuppressWarnings("ParameterNotNullable") + private void updatePlayingPeriodRenderers(@Nullable MediaPeriodHolder oldPlayingPeriodHolder) + throws ExoPlaybackException { + MediaPeriodHolder newPlayingPeriodHolder = queue.getPlayingPeriod(); + if (newPlayingPeriodHolder == null || oldPlayingPeriodHolder == newPlayingPeriodHolder) { + return; + } + int enabledRendererCount = 0; + boolean[] rendererWasEnabledFlags = new boolean[renderers.length]; + for (int i = 0; i < renderers.length; i++) { + Renderer renderer = renderers[i]; + rendererWasEnabledFlags[i] = renderer.getState() != Renderer.STATE_DISABLED; + if (newPlayingPeriodHolder.getTrackSelectorResult().isRendererEnabled(i)) { + enabledRendererCount++; + } + if (rendererWasEnabledFlags[i] + && (!newPlayingPeriodHolder.getTrackSelectorResult().isRendererEnabled(i) + || (renderer.isCurrentStreamFinal() + && renderer.getStream() == oldPlayingPeriodHolder.sampleStreams[i]))) { + // The renderer should be disabled before playing the next period, either because it's not + // needed to play the next period, or because we need to re-enable it as its current stream + // is final and it's not reading ahead. + disableRenderer(renderer); + } + } + playbackInfo = + playbackInfo.copyWithTrackInfo( + newPlayingPeriodHolder.getTrackGroups(), + newPlayingPeriodHolder.getTrackSelectorResult()); + enableRenderers(rendererWasEnabledFlags, enabledRendererCount); + } + + private void enableRenderers(boolean[] rendererWasEnabledFlags, int totalEnabledRendererCount) + throws ExoPlaybackException { + enabledRenderers = new Renderer[totalEnabledRendererCount]; + int enabledRendererCount = 0; + TrackSelectorResult trackSelectorResult = queue.getPlayingPeriod().getTrackSelectorResult(); + // Reset all disabled renderers before enabling any new ones. This makes sure resources released + // by the disabled renderers will be available to renderers that are being enabled. + for (int i = 0; i < renderers.length; i++) { + if (!trackSelectorResult.isRendererEnabled(i)) { + renderers[i].reset(); + } + } + // Enable the renderers. + for (int i = 0; i < renderers.length; i++) { + if (trackSelectorResult.isRendererEnabled(i)) { + enableRenderer(i, rendererWasEnabledFlags[i], enabledRendererCount++); + } + } + } + + private void enableRenderer( + int rendererIndex, boolean wasRendererEnabled, int enabledRendererIndex) + throws ExoPlaybackException { + MediaPeriodHolder playingPeriodHolder = queue.getPlayingPeriod(); + Renderer renderer = renderers[rendererIndex]; + enabledRenderers[enabledRendererIndex] = renderer; + if (renderer.getState() == Renderer.STATE_DISABLED) { + TrackSelectorResult trackSelectorResult = playingPeriodHolder.getTrackSelectorResult(); + RendererConfiguration rendererConfiguration = + trackSelectorResult.rendererConfigurations[rendererIndex]; + TrackSelection newSelection = trackSelectorResult.selections.get(rendererIndex); + Format[] formats = getFormats(newSelection); + // The renderer needs enabling with its new track selection. + boolean playing = playWhenReady && playbackInfo.playbackState == Player.STATE_READY; + // Consider as joining only if the renderer was previously disabled. + boolean joining = !wasRendererEnabled && playing; + // Enable the renderer. + renderer.enable( + rendererConfiguration, + formats, + playingPeriodHolder.sampleStreams[rendererIndex], + rendererPositionUs, + joining, + playingPeriodHolder.getRendererOffset()); + mediaClock.onRendererEnabled(renderer); + // Start the renderer if playing. + if (playing) { + renderer.start(); + } + } + } + + private void handleLoadingMediaPeriodChanged(boolean loadingTrackSelectionChanged) { + MediaPeriodHolder loadingMediaPeriodHolder = queue.getLoadingPeriod(); + MediaPeriodId loadingMediaPeriodId = + loadingMediaPeriodHolder == null ? playbackInfo.periodId : loadingMediaPeriodHolder.info.id; + boolean loadingMediaPeriodChanged = + !playbackInfo.loadingMediaPeriodId.equals(loadingMediaPeriodId); + if (loadingMediaPeriodChanged) { + playbackInfo = playbackInfo.copyWithLoadingMediaPeriodId(loadingMediaPeriodId); + } + playbackInfo.bufferedPositionUs = + loadingMediaPeriodHolder == null + ? playbackInfo.positionUs + : loadingMediaPeriodHolder.getBufferedPositionUs(); + playbackInfo.totalBufferedDurationUs = getTotalBufferedDurationUs(); + if ((loadingMediaPeriodChanged || loadingTrackSelectionChanged) + && loadingMediaPeriodHolder != null + && loadingMediaPeriodHolder.prepared) { + updateLoadControlTrackSelection( + loadingMediaPeriodHolder.getTrackGroups(), + loadingMediaPeriodHolder.getTrackSelectorResult()); + } + } + + private long getTotalBufferedDurationUs() { + return getTotalBufferedDurationUs(playbackInfo.bufferedPositionUs); + } + + private long getTotalBufferedDurationUs(long bufferedPositionInLoadingPeriodUs) { + MediaPeriodHolder loadingPeriodHolder = queue.getLoadingPeriod(); + if (loadingPeriodHolder == null) { + return 0; + } + long totalBufferedDurationUs = + bufferedPositionInLoadingPeriodUs - loadingPeriodHolder.toPeriodTime(rendererPositionUs); + return Math.max(0, totalBufferedDurationUs); + } + + private void updateLoadControlTrackSelection( + TrackGroupArray trackGroups, TrackSelectorResult trackSelectorResult) { + loadControl.onTracksSelected(renderers, trackGroups, trackSelectorResult.selections); + } + + private void sendPlaybackParametersChangedInternal( + PlaybackParameters playbackParameters, boolean acknowledgeCommand) { + handler + .obtainMessage( + MSG_PLAYBACK_PARAMETERS_CHANGED_INTERNAL, + acknowledgeCommand ? 1 : 0, + 0, + playbackParameters) + .sendToTarget(); + } + + private static Format[] getFormats(TrackSelection newSelection) { + // Build an array of formats contained by the selection. + int length = newSelection != null ? newSelection.length() : 0; + Format[] formats = new Format[length]; + for (int i = 0; i < length; i++) { + formats[i] = newSelection.getFormat(i); + } + return formats; + } + + private static final class SeekPosition { + + public final Timeline timeline; + public final int windowIndex; + public final long windowPositionUs; + + public SeekPosition(Timeline timeline, int windowIndex, long windowPositionUs) { + this.timeline = timeline; + this.windowIndex = windowIndex; + this.windowPositionUs = windowPositionUs; + } + } + + private static final class PendingMessageInfo implements Comparable { + + public final PlayerMessage message; + + public int resolvedPeriodIndex; + public long resolvedPeriodTimeUs; + @Nullable public Object resolvedPeriodUid; + + public PendingMessageInfo(PlayerMessage message) { + this.message = message; + } + + public void setResolvedPosition(int periodIndex, long periodTimeUs, Object periodUid) { + resolvedPeriodIndex = periodIndex; + resolvedPeriodTimeUs = periodTimeUs; + resolvedPeriodUid = periodUid; + } + + @Override + public int compareTo(PendingMessageInfo other) { + if ((resolvedPeriodUid == null) != (other.resolvedPeriodUid == null)) { + // PendingMessageInfos with a resolved period position are always smaller. + return resolvedPeriodUid != null ? -1 : 1; + } + if (resolvedPeriodUid == null) { + // Don't sort message with unresolved positions. + return 0; + } + // Sort resolved media times by period index and then by period position. + int comparePeriodIndex = resolvedPeriodIndex - other.resolvedPeriodIndex; + if (comparePeriodIndex != 0) { + return comparePeriodIndex; + } + return Util.compareLong(resolvedPeriodTimeUs, other.resolvedPeriodTimeUs); + } + } + + private static final class MediaSourceRefreshInfo { + + public final MediaSource source; + public final Timeline timeline; + + public MediaSourceRefreshInfo(MediaSource source, Timeline timeline) { + this.source = source; + this.timeline = timeline; + } + } + + private static final class PlaybackInfoUpdate { + + private PlaybackInfo lastPlaybackInfo; + private int operationAcks; + private boolean positionDiscontinuity; + private @DiscontinuityReason int discontinuityReason; + + public boolean hasPendingUpdate(PlaybackInfo playbackInfo) { + return playbackInfo != lastPlaybackInfo || operationAcks > 0 || positionDiscontinuity; + } + + public void reset(PlaybackInfo playbackInfo) { + lastPlaybackInfo = playbackInfo; + operationAcks = 0; + positionDiscontinuity = false; + } + + public void incrementPendingOperationAcks(int operationAcks) { + this.operationAcks += operationAcks; + } + + public void setPositionDiscontinuity(@DiscontinuityReason int discontinuityReason) { + if (positionDiscontinuity + && this.discontinuityReason != Player.DISCONTINUITY_REASON_INTERNAL) { + // We always prefer non-internal discontinuity reasons. We also assume that we won't report + // more than one non-internal discontinuity per message iteration. + Assertions.checkArgument(discontinuityReason == Player.DISCONTINUITY_REASON_INTERNAL); + return; + } + positionDiscontinuity = true; + this.discontinuityReason = discontinuityReason; + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerLibraryInfo.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerLibraryInfo.java new file mode 100644 index 0000000000..545017a215 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ExoPlayerLibraryInfo.java @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import java.util.HashSet; + +/** + * Information about the ExoPlayer library. + */ +public final class ExoPlayerLibraryInfo { + + /** + * A tag to use when logging library information. + */ + public static final String TAG = "ExoPlayer"; + + /** The version of the library expressed as a string, for example "1.2.3". */ + // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION_INT) or vice versa. + public static final String VERSION = "2.11.4"; + + /** The version of the library expressed as {@code "ExoPlayerLib/" + VERSION}. */ + // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION) or vice versa. + public static final String VERSION_SLASHY = "ExoPlayerLib/2.11.4"; + + /** + * The version of the library expressed as an integer, for example 1002003. + * + *

Three digits are used for each component of {@link #VERSION}. For example "1.2.3" has the + * corresponding integer version 1002003 (001-002-003), and "123.45.6" has the corresponding + * integer version 123045006 (123-045-006). + */ + // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION) or vice versa. + public static final int VERSION_INT = 2011004; + + /** + * Whether the library was compiled with {@link org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions} + * checks enabled. + */ + public static final boolean ASSERTIONS_ENABLED = true; + + /** Whether an exception should be thrown in case of an OpenGl error. */ + public static final boolean GL_ASSERTIONS_ENABLED = false; + + /** + * Whether the library was compiled with {@link org.mozilla.thirdparty.com.google.android.exoplayer2.util.TraceUtil} + * trace enabled. + */ + public static final boolean TRACE_ENABLED = true; + + private static final HashSet registeredModules = new HashSet<>(); + private static String registeredModulesString = "goog.exo.core"; + + private ExoPlayerLibraryInfo() {} // Prevents instantiation. + + /** + * Returns a string consisting of registered module names separated by ", ". + */ + public static synchronized String registeredModules() { + return registeredModulesString; + } + + /** + * Registers a module to be returned in the {@link #registeredModules()} string. + * + * @param name The name of the module being registered. + */ + public static synchronized void registerModule(String name) { + if (registeredModules.add(name)) { + registeredModulesString = registeredModulesString + ", " + name; + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Format.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Format.java new file mode 100644 index 0000000000..9d7518f6f0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Format.java @@ -0,0 +1,1750 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.ColorInfo; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; + +/** + * Representation of a media format. + */ +public final class Format implements Parcelable { + + /** + * A value for various fields to indicate that the field's value is unknown or not applicable. + */ + public static final int NO_VALUE = -1; + + /** + * A value for {@link #subsampleOffsetUs} to indicate that subsample timestamps are relative to + * the timestamps of their parent samples. + */ + public static final long OFFSET_SAMPLE_RELATIVE = Long.MAX_VALUE; + + /** An identifier for the format, or null if unknown or not applicable. */ + @Nullable public final String id; + /** The human readable label, or null if unknown or not applicable. */ + @Nullable public final String label; + /** Track selection flags. */ + @C.SelectionFlags public final int selectionFlags; + /** Track role flags. */ + @C.RoleFlags public final int roleFlags; + /** + * The average bandwidth in bits per second, or {@link #NO_VALUE} if unknown or not applicable. + */ + public final int bitrate; + /** Codecs of the format as described in RFC 6381, or null if unknown or not applicable. */ + @Nullable public final String codecs; + /** Metadata, or null if unknown or not applicable. */ + @Nullable public final Metadata metadata; + + // Container specific. + + /** The mime type of the container, or null if unknown or not applicable. */ + @Nullable public final String containerMimeType; + + // Elementary stream specific. + + /** + * The mime type of the elementary stream (i.e. the individual samples), or null if unknown or not + * applicable. + */ + @Nullable public final String sampleMimeType; + /** + * The maximum size of a buffer of data (typically one sample), or {@link #NO_VALUE} if unknown or + * not applicable. + */ + public final int maxInputSize; + /** + * Initialization data that must be provided to the decoder. Will not be null, but may be empty + * if initialization data is not required. + */ + public final List initializationData; + /** DRM initialization data if the stream is protected, or null otherwise. */ + @Nullable public final DrmInitData drmInitData; + + /** + * For samples that contain subsamples, this is an offset that should be added to subsample + * timestamps. A value of {@link #OFFSET_SAMPLE_RELATIVE} indicates that subsample timestamps are + * relative to the timestamps of their parent samples. + */ + public final long subsampleOffsetUs; + + // Video specific. + + /** + * The width of the video in pixels, or {@link #NO_VALUE} if unknown or not applicable. + */ + public final int width; + /** + * The height of the video in pixels, or {@link #NO_VALUE} if unknown or not applicable. + */ + public final int height; + /** + * The frame rate in frames per second, or {@link #NO_VALUE} if unknown or not applicable. + */ + public final float frameRate; + /** + * The clockwise rotation that should be applied to the video for it to be rendered in the correct + * orientation, or 0 if unknown or not applicable. Only 0, 90, 180 and 270 are supported. + */ + public final int rotationDegrees; + /** The width to height ratio of pixels in the video, or 1.0 if unknown or not applicable. */ + public final float pixelWidthHeightRatio; + /** + * The stereo layout for 360/3D/VR video, or {@link #NO_VALUE} if not applicable. Valid stereo + * modes are {@link C#STEREO_MODE_MONO}, {@link C#STEREO_MODE_TOP_BOTTOM}, {@link + * C#STEREO_MODE_LEFT_RIGHT}, {@link C#STEREO_MODE_STEREO_MESH}. + */ + @C.StereoMode + public final int stereoMode; + /** The projection data for 360/VR video, or null if not applicable. */ + @Nullable public final byte[] projectionData; + /** The color metadata associated with the video, helps with accurate color reproduction. */ + @Nullable public final ColorInfo colorInfo; + + // Audio specific. + + /** + * The number of audio channels, or {@link #NO_VALUE} if unknown or not applicable. + */ + public final int channelCount; + /** + * The audio sampling rate in Hz, or {@link #NO_VALUE} if unknown or not applicable. + */ + public final int sampleRate; + /** The {@link C.PcmEncoding} for PCM audio. Set to {@link #NO_VALUE} for other media types. */ + public final @C.PcmEncoding int pcmEncoding; + /** + * The number of frames to trim from the start of the decoded audio stream, or 0 if not + * applicable. + */ + public final int encoderDelay; + /** + * The number of frames to trim from the end of the decoded audio stream, or 0 if not applicable. + */ + public final int encoderPadding; + + // Audio and text specific. + + /** The language as an IETF BCP 47 conformant tag, or null if unknown or not applicable. */ + @Nullable public final String language; + /** + * The Accessibility channel, or {@link #NO_VALUE} if not known or applicable. + */ + public final int accessibilityChannel; + + // Provided by source. + + /** + * The type of the {@link ExoMediaCrypto} provided by the media source, if the media source can + * acquire a {@link DrmSession} for {@link #drmInitData}. Null if the media source cannot acquire + * a session for {@link #drmInitData}, or if not applicable. + */ + @Nullable public final Class exoMediaCryptoType; + + // Lazily initialized hashcode. + private int hashCode; + + // Video. + + /** + * @deprecated Use {@link #createVideoContainerFormat(String, String, String, String, String, + * Metadata, int, int, int, float, List, int, int)} instead. + */ + @Deprecated + public static Format createVideoContainerFormat( + @Nullable String id, + @Nullable String containerMimeType, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + int width, + int height, + float frameRate, + @Nullable List initializationData, + @C.SelectionFlags int selectionFlags) { + return createVideoContainerFormat( + id, + /* label= */ null, + containerMimeType, + sampleMimeType, + codecs, + /* metadata= */ null, + bitrate, + width, + height, + frameRate, + initializationData, + selectionFlags, + /* roleFlags= */ 0); + } + + public static Format createVideoContainerFormat( + @Nullable String id, + @Nullable String label, + @Nullable String containerMimeType, + @Nullable String sampleMimeType, + @Nullable String codecs, + @Nullable Metadata metadata, + int bitrate, + int width, + int height, + float frameRate, + @Nullable List initializationData, + @C.SelectionFlags int selectionFlags, + @C.RoleFlags int roleFlags) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + /* maxInputSize= */ NO_VALUE, + initializationData, + /* drmInitData= */ null, + OFFSET_SAMPLE_RELATIVE, + width, + height, + frameRate, + /* rotationDegrees= */ NO_VALUE, + /* pixelWidthHeightRatio= */ NO_VALUE, + /* projectionData= */ null, + /* stereoMode= */ NO_VALUE, + /* colorInfo= */ null, + /* channelCount= */ NO_VALUE, + /* sampleRate= */ NO_VALUE, + /* pcmEncoding= */ NO_VALUE, + /* encoderDelay= */ NO_VALUE, + /* encoderPadding= */ NO_VALUE, + /* language= */ null, + /* accessibilityChannel= */ NO_VALUE, + /* exoMediaCryptoType= */ null); + } + + public static Format createVideoSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + int maxInputSize, + int width, + int height, + float frameRate, + @Nullable List initializationData, + @Nullable DrmInitData drmInitData) { + return createVideoSampleFormat( + id, + sampleMimeType, + codecs, + bitrate, + maxInputSize, + width, + height, + frameRate, + initializationData, + /* rotationDegrees= */ NO_VALUE, + /* pixelWidthHeightRatio= */ NO_VALUE, + drmInitData); + } + + public static Format createVideoSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + int maxInputSize, + int width, + int height, + float frameRate, + @Nullable List initializationData, + int rotationDegrees, + float pixelWidthHeightRatio, + @Nullable DrmInitData drmInitData) { + return createVideoSampleFormat( + id, + sampleMimeType, + codecs, + bitrate, + maxInputSize, + width, + height, + frameRate, + initializationData, + rotationDegrees, + pixelWidthHeightRatio, + /* projectionData= */ null, + /* stereoMode= */ NO_VALUE, + /* colorInfo= */ null, + drmInitData); + } + + public static Format createVideoSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + int maxInputSize, + int width, + int height, + float frameRate, + @Nullable List initializationData, + int rotationDegrees, + float pixelWidthHeightRatio, + @Nullable byte[] projectionData, + @C.StereoMode int stereoMode, + @Nullable ColorInfo colorInfo, + @Nullable DrmInitData drmInitData) { + return new Format( + id, + /* label= */ null, + /* selectionFlags= */ 0, + /* roleFlags= */ 0, + bitrate, + codecs, + /* metadata= */ null, + /* containerMimeType= */ null, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + OFFSET_SAMPLE_RELATIVE, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + /* channelCount= */ NO_VALUE, + /* sampleRate= */ NO_VALUE, + /* pcmEncoding= */ NO_VALUE, + /* encoderDelay= */ NO_VALUE, + /* encoderPadding= */ NO_VALUE, + /* language= */ null, + /* accessibilityChannel= */ NO_VALUE, + /* exoMediaCryptoType= */ null); + } + + // Audio. + + /** + * @deprecated Use {@link #createAudioContainerFormat(String, String, String, String, String, + * Metadata, int, int, int, List, int, int, String)} instead. + */ + @Deprecated + public static Format createAudioContainerFormat( + @Nullable String id, + @Nullable String containerMimeType, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + int channelCount, + int sampleRate, + @Nullable List initializationData, + @C.SelectionFlags int selectionFlags, + @Nullable String language) { + return createAudioContainerFormat( + id, + /* label= */ null, + containerMimeType, + sampleMimeType, + codecs, + /* metadata= */ null, + bitrate, + channelCount, + sampleRate, + initializationData, + selectionFlags, + /* roleFlags= */ 0, + language); + } + + public static Format createAudioContainerFormat( + @Nullable String id, + @Nullable String label, + @Nullable String containerMimeType, + @Nullable String sampleMimeType, + @Nullable String codecs, + @Nullable Metadata metadata, + int bitrate, + int channelCount, + int sampleRate, + @Nullable List initializationData, + @C.SelectionFlags int selectionFlags, + @C.RoleFlags int roleFlags, + @Nullable String language) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + /* maxInputSize= */ NO_VALUE, + initializationData, + /* drmInitData= */ null, + OFFSET_SAMPLE_RELATIVE, + /* width= */ NO_VALUE, + /* height= */ NO_VALUE, + /* frameRate= */ NO_VALUE, + /* rotationDegrees= */ NO_VALUE, + /* pixelWidthHeightRatio= */ NO_VALUE, + /* projectionData= */ null, + /* stereoMode= */ NO_VALUE, + /* colorInfo= */ null, + channelCount, + sampleRate, + /* pcmEncoding= */ NO_VALUE, + /* encoderDelay= */ NO_VALUE, + /* encoderPadding= */ NO_VALUE, + language, + /* accessibilityChannel= */ NO_VALUE, + /* exoMediaCryptoType= */ null); + } + + public static Format createAudioSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + int maxInputSize, + int channelCount, + int sampleRate, + @Nullable List initializationData, + @Nullable DrmInitData drmInitData, + @C.SelectionFlags int selectionFlags, + @Nullable String language) { + return createAudioSampleFormat( + id, + sampleMimeType, + codecs, + bitrate, + maxInputSize, + channelCount, + sampleRate, + /* pcmEncoding= */ NO_VALUE, + initializationData, + drmInitData, + selectionFlags, + language); + } + + public static Format createAudioSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + int maxInputSize, + int channelCount, + int sampleRate, + @C.PcmEncoding int pcmEncoding, + @Nullable List initializationData, + @Nullable DrmInitData drmInitData, + @C.SelectionFlags int selectionFlags, + @Nullable String language) { + return createAudioSampleFormat( + id, + sampleMimeType, + codecs, + bitrate, + maxInputSize, + channelCount, + sampleRate, + pcmEncoding, + /* encoderDelay= */ NO_VALUE, + /* encoderPadding= */ NO_VALUE, + initializationData, + drmInitData, + selectionFlags, + language, + /* metadata= */ null); + } + + public static Format createAudioSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + int maxInputSize, + int channelCount, + int sampleRate, + @C.PcmEncoding int pcmEncoding, + int encoderDelay, + int encoderPadding, + @Nullable List initializationData, + @Nullable DrmInitData drmInitData, + @C.SelectionFlags int selectionFlags, + @Nullable String language, + @Nullable Metadata metadata) { + return new Format( + id, + /* label= */ null, + selectionFlags, + /* roleFlags= */ 0, + bitrate, + codecs, + metadata, + /* containerMimeType= */ null, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + OFFSET_SAMPLE_RELATIVE, + /* width= */ NO_VALUE, + /* height= */ NO_VALUE, + /* frameRate= */ NO_VALUE, + /* rotationDegrees= */ NO_VALUE, + /* pixelWidthHeightRatio= */ NO_VALUE, + /* projectionData= */ null, + /* stereoMode= */ NO_VALUE, + /* colorInfo= */ null, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + /* accessibilityChannel= */ NO_VALUE, + /* exoMediaCryptoType= */ null); + } + + // Text. + + public static Format createTextContainerFormat( + @Nullable String id, + @Nullable String label, + @Nullable String containerMimeType, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + @C.SelectionFlags int selectionFlags, + @C.RoleFlags int roleFlags, + @Nullable String language) { + return createTextContainerFormat( + id, + label, + containerMimeType, + sampleMimeType, + codecs, + bitrate, + selectionFlags, + roleFlags, + language, + /* accessibilityChannel= */ NO_VALUE); + } + + public static Format createTextContainerFormat( + @Nullable String id, + @Nullable String label, + @Nullable String containerMimeType, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + @C.SelectionFlags int selectionFlags, + @C.RoleFlags int roleFlags, + @Nullable String language, + int accessibilityChannel) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + /* metadata= */ null, + containerMimeType, + sampleMimeType, + /* maxInputSize= */ NO_VALUE, + /* initializationData= */ null, + /* drmInitData= */ null, + OFFSET_SAMPLE_RELATIVE, + /* width= */ NO_VALUE, + /* height= */ NO_VALUE, + /* frameRate= */ NO_VALUE, + /* rotationDegrees= */ NO_VALUE, + /* pixelWidthHeightRatio= */ NO_VALUE, + /* projectionData= */ null, + /* stereoMode= */ NO_VALUE, + /* colorInfo= */ null, + /* channelCount= */ NO_VALUE, + /* sampleRate= */ NO_VALUE, + /* pcmEncoding= */ NO_VALUE, + /* encoderDelay= */ NO_VALUE, + /* encoderPadding= */ NO_VALUE, + language, + accessibilityChannel, + /* exoMediaCryptoType= */ null); + } + + public static Format createTextSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @C.SelectionFlags int selectionFlags, + @Nullable String language) { + return createTextSampleFormat(id, sampleMimeType, selectionFlags, language, null); + } + + public static Format createTextSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @C.SelectionFlags int selectionFlags, + @Nullable String language, + @Nullable DrmInitData drmInitData) { + return createTextSampleFormat( + id, + sampleMimeType, + /* codecs= */ null, + /* bitrate= */ NO_VALUE, + selectionFlags, + language, + NO_VALUE, + drmInitData, + OFFSET_SAMPLE_RELATIVE, + Collections.emptyList()); + } + + public static Format createTextSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + @C.SelectionFlags int selectionFlags, + @Nullable String language, + int accessibilityChannel, + @Nullable DrmInitData drmInitData) { + return createTextSampleFormat( + id, + sampleMimeType, + codecs, + bitrate, + selectionFlags, + language, + accessibilityChannel, + drmInitData, + OFFSET_SAMPLE_RELATIVE, + Collections.emptyList()); + } + + public static Format createTextSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + @C.SelectionFlags int selectionFlags, + @Nullable String language, + @Nullable DrmInitData drmInitData, + long subsampleOffsetUs) { + return createTextSampleFormat( + id, + sampleMimeType, + codecs, + bitrate, + selectionFlags, + language, + /* accessibilityChannel= */ NO_VALUE, + drmInitData, + subsampleOffsetUs, + Collections.emptyList()); + } + + public static Format createTextSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + @C.SelectionFlags int selectionFlags, + @Nullable String language, + int accessibilityChannel, + @Nullable DrmInitData drmInitData, + long subsampleOffsetUs, + @Nullable List initializationData) { + return new Format( + id, + /* label= */ null, + selectionFlags, + /* roleFlags= */ 0, + bitrate, + codecs, + /* metadata= */ null, + /* containerMimeType= */ null, + sampleMimeType, + /* maxInputSize= */ NO_VALUE, + initializationData, + drmInitData, + subsampleOffsetUs, + /* width= */ NO_VALUE, + /* height= */ NO_VALUE, + /* frameRate= */ NO_VALUE, + /* rotationDegrees= */ NO_VALUE, + /* pixelWidthHeightRatio= */ NO_VALUE, + /* projectionData= */ null, + /* stereoMode= */ NO_VALUE, + /* colorInfo= */ null, + /* channelCount= */ NO_VALUE, + /* sampleRate= */ NO_VALUE, + /* pcmEncoding= */ NO_VALUE, + /* encoderDelay= */ NO_VALUE, + /* encoderPadding= */ NO_VALUE, + language, + accessibilityChannel, + /* exoMediaCryptoType= */ null); + } + + // Image. + + public static Format createImageSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + @C.SelectionFlags int selectionFlags, + @Nullable List initializationData, + @Nullable String language, + @Nullable DrmInitData drmInitData) { + return new Format( + id, + /* label= */ null, + selectionFlags, + /* roleFlags= */ 0, + bitrate, + codecs, + /* metadata=*/ null, + /* containerMimeType= */ null, + sampleMimeType, + /* maxInputSize= */ NO_VALUE, + initializationData, + drmInitData, + OFFSET_SAMPLE_RELATIVE, + /* width= */ NO_VALUE, + /* height= */ NO_VALUE, + /* frameRate= */ NO_VALUE, + /* rotationDegrees= */ NO_VALUE, + /* pixelWidthHeightRatio= */ NO_VALUE, + /* projectionData= */ null, + /* stereoMode= */ NO_VALUE, + /* colorInfo= */ null, + /* channelCount= */ NO_VALUE, + /* sampleRate= */ NO_VALUE, + /* pcmEncoding= */ NO_VALUE, + /* encoderDelay= */ NO_VALUE, + /* encoderPadding= */ NO_VALUE, + language, + /* accessibilityChannel= */ NO_VALUE, + /* exoMediaCryptoType= */ null); + } + + // Generic. + + /** + * @deprecated Use {@link #createContainerFormat(String, String, String, String, String, int, int, + * int, String)} instead. + */ + @Deprecated + public static Format createContainerFormat( + @Nullable String id, + @Nullable String containerMimeType, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + @C.SelectionFlags int selectionFlags, + @Nullable String language) { + return createContainerFormat( + id, + /* label= */ null, + containerMimeType, + sampleMimeType, + codecs, + bitrate, + selectionFlags, + /* roleFlags= */ 0, + language); + } + + public static Format createContainerFormat( + @Nullable String id, + @Nullable String label, + @Nullable String containerMimeType, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + @C.SelectionFlags int selectionFlags, + @C.RoleFlags int roleFlags, + @Nullable String language) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + /* metadata= */ null, + containerMimeType, + sampleMimeType, + /* maxInputSize= */ NO_VALUE, + /* initializationData= */ null, + /* drmInitData= */ null, + OFFSET_SAMPLE_RELATIVE, + /* width= */ NO_VALUE, + /* height= */ NO_VALUE, + /* frameRate= */ NO_VALUE, + /* rotationDegrees= */ NO_VALUE, + /* pixelWidthHeightRatio= */ NO_VALUE, + /* projectionData= */ null, + /* stereoMode= */ NO_VALUE, + /* colorInfo= */ null, + /* channelCount= */ NO_VALUE, + /* sampleRate= */ NO_VALUE, + /* pcmEncoding= */ NO_VALUE, + /* encoderDelay= */ NO_VALUE, + /* encoderPadding= */ NO_VALUE, + language, + /* accessibilityChannel= */ NO_VALUE, + /* exoMediaCryptoType= */ null); + } + + public static Format createSampleFormat( + @Nullable String id, @Nullable String sampleMimeType, long subsampleOffsetUs) { + return new Format( + id, + /* label= */ null, + /* selectionFlags= */ 0, + /* roleFlags= */ 0, + /* bitrate= */ NO_VALUE, + /* codecs= */ null, + /* metadata= */ null, + /* containerMimeType= */ null, + sampleMimeType, + /* maxInputSize= */ NO_VALUE, + /* initializationData= */ null, + /* drmInitData= */ null, + subsampleOffsetUs, + /* width= */ NO_VALUE, + /* height= */ NO_VALUE, + /* frameRate= */ NO_VALUE, + /* rotationDegrees= */ NO_VALUE, + /* pixelWidthHeightRatio= */ NO_VALUE, + /* projectionData= */ null, + /* stereoMode= */ NO_VALUE, + /* colorInfo= */ null, + /* channelCount= */ NO_VALUE, + /* sampleRate= */ NO_VALUE, + /* pcmEncoding= */ NO_VALUE, + /* encoderDelay= */ NO_VALUE, + /* encoderPadding= */ NO_VALUE, + /* language= */ null, + /* accessibilityChannel= */ NO_VALUE, + /* exoMediaCryptoType= */ null); + } + + public static Format createSampleFormat( + @Nullable String id, + @Nullable String sampleMimeType, + @Nullable String codecs, + int bitrate, + @Nullable DrmInitData drmInitData) { + return new Format( + id, + /* label= */ null, + /* selectionFlags= */ 0, + /* roleFlags= */ 0, + bitrate, + codecs, + /* metadata= */ null, + /* containerMimeType= */ null, + sampleMimeType, + /* maxInputSize= */ NO_VALUE, + /* initializationData= */ null, + drmInitData, + OFFSET_SAMPLE_RELATIVE, + /* width= */ NO_VALUE, + /* height= */ NO_VALUE, + /* frameRate= */ NO_VALUE, + /* rotationDegrees= */ NO_VALUE, + /* pixelWidthHeightRatio= */ NO_VALUE, + /* projectionData= */ null, + /* stereoMode= */ NO_VALUE, + /* colorInfo= */ null, + /* channelCount= */ NO_VALUE, + /* sampleRate= */ NO_VALUE, + /* pcmEncoding= */ NO_VALUE, + /* encoderDelay= */ NO_VALUE, + /* encoderPadding= */ NO_VALUE, + /* language= */ null, + /* accessibilityChannel= */ NO_VALUE, + /* exoMediaCryptoType= */ null); + } + + /* package */ Format( + @Nullable String id, + @Nullable String label, + @C.SelectionFlags int selectionFlags, + @C.RoleFlags int roleFlags, + int bitrate, + @Nullable String codecs, + @Nullable Metadata metadata, + // Container specific. + @Nullable String containerMimeType, + // Elementary stream specific. + @Nullable String sampleMimeType, + int maxInputSize, + @Nullable List initializationData, + @Nullable DrmInitData drmInitData, + long subsampleOffsetUs, + // Video specific. + int width, + int height, + float frameRate, + int rotationDegrees, + float pixelWidthHeightRatio, + @Nullable byte[] projectionData, + @C.StereoMode int stereoMode, + @Nullable ColorInfo colorInfo, + // Audio specific. + int channelCount, + int sampleRate, + @C.PcmEncoding int pcmEncoding, + int encoderDelay, + int encoderPadding, + // Audio and text specific. + @Nullable String language, + int accessibilityChannel, + // Provided by source. + @Nullable Class exoMediaCryptoType) { + this.id = id; + this.label = label; + this.selectionFlags = selectionFlags; + this.roleFlags = roleFlags; + this.bitrate = bitrate; + this.codecs = codecs; + this.metadata = metadata; + // Container specific. + this.containerMimeType = containerMimeType; + // Elementary stream specific. + this.sampleMimeType = sampleMimeType; + this.maxInputSize = maxInputSize; + this.initializationData = + initializationData == null ? Collections.emptyList() : initializationData; + this.drmInitData = drmInitData; + this.subsampleOffsetUs = subsampleOffsetUs; + // Video specific. + this.width = width; + this.height = height; + this.frameRate = frameRate; + this.rotationDegrees = rotationDegrees == Format.NO_VALUE ? 0 : rotationDegrees; + this.pixelWidthHeightRatio = + pixelWidthHeightRatio == Format.NO_VALUE ? 1 : pixelWidthHeightRatio; + this.projectionData = projectionData; + this.stereoMode = stereoMode; + this.colorInfo = colorInfo; + // Audio specific. + this.channelCount = channelCount; + this.sampleRate = sampleRate; + this.pcmEncoding = pcmEncoding; + this.encoderDelay = encoderDelay == Format.NO_VALUE ? 0 : encoderDelay; + this.encoderPadding = encoderPadding == Format.NO_VALUE ? 0 : encoderPadding; + // Audio and text specific. + this.language = Util.normalizeLanguageCode(language); + this.accessibilityChannel = accessibilityChannel; + // Provided by source. + this.exoMediaCryptoType = exoMediaCryptoType; + } + + @SuppressWarnings("ResourceType") + /* package */ Format(Parcel in) { + id = in.readString(); + label = in.readString(); + selectionFlags = in.readInt(); + roleFlags = in.readInt(); + bitrate = in.readInt(); + codecs = in.readString(); + metadata = in.readParcelable(Metadata.class.getClassLoader()); + // Container specific. + containerMimeType = in.readString(); + // Elementary stream specific. + sampleMimeType = in.readString(); + maxInputSize = in.readInt(); + int initializationDataSize = in.readInt(); + initializationData = new ArrayList<>(initializationDataSize); + for (int i = 0; i < initializationDataSize; i++) { + initializationData.add(in.createByteArray()); + } + drmInitData = in.readParcelable(DrmInitData.class.getClassLoader()); + subsampleOffsetUs = in.readLong(); + // Video specific. + width = in.readInt(); + height = in.readInt(); + frameRate = in.readFloat(); + rotationDegrees = in.readInt(); + pixelWidthHeightRatio = in.readFloat(); + boolean hasProjectionData = Util.readBoolean(in); + projectionData = hasProjectionData ? in.createByteArray() : null; + stereoMode = in.readInt(); + colorInfo = in.readParcelable(ColorInfo.class.getClassLoader()); + // Audio specific. + channelCount = in.readInt(); + sampleRate = in.readInt(); + pcmEncoding = in.readInt(); + encoderDelay = in.readInt(); + encoderPadding = in.readInt(); + // Audio and text specific. + language = in.readString(); + accessibilityChannel = in.readInt(); + // Provided by source. + exoMediaCryptoType = null; + } + + public Format copyWithMaxInputSize(int maxInputSize) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + public Format copyWithSubsampleOffsetUs(long subsampleOffsetUs) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + public Format copyWithLabel(@Nullable String label) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + public Format copyWithContainerInfo( + @Nullable String id, + @Nullable String label, + @Nullable String sampleMimeType, + @Nullable String codecs, + @Nullable Metadata metadata, + int bitrate, + int width, + int height, + int channelCount, + @C.SelectionFlags int selectionFlags, + @Nullable String language) { + + if (this.metadata != null) { + metadata = this.metadata.copyWithAppendedEntriesFrom(metadata); + } + + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + @SuppressWarnings("ReferenceEquality") + public Format copyWithManifestFormatInfo(Format manifestFormat) { + if (this == manifestFormat) { + // No need to copy from ourselves. + return this; + } + + int trackType = MimeTypes.getTrackType(sampleMimeType); + + // Use manifest value only. + String id = manifestFormat.id; + + // Prefer manifest values, but fill in from sample format if missing. + String label = manifestFormat.label != null ? manifestFormat.label : this.label; + String language = this.language; + if ((trackType == C.TRACK_TYPE_TEXT || trackType == C.TRACK_TYPE_AUDIO) + && manifestFormat.language != null) { + language = manifestFormat.language; + } + + // Prefer sample format values, but fill in from manifest if missing. + int bitrate = this.bitrate == NO_VALUE ? manifestFormat.bitrate : this.bitrate; + String codecs = this.codecs; + if (codecs == null) { + // The manifest format may be muxed, so filter only codecs of this format's type. If we still + // have more than one codec then we're unable to uniquely identify which codec to fill in. + String codecsOfType = Util.getCodecsOfType(manifestFormat.codecs, trackType); + if (Util.splitCodecs(codecsOfType).length == 1) { + codecs = codecsOfType; + } + } + + Metadata metadata = + this.metadata == null + ? manifestFormat.metadata + : this.metadata.copyWithAppendedEntriesFrom(manifestFormat.metadata); + + float frameRate = this.frameRate; + if (frameRate == NO_VALUE && trackType == C.TRACK_TYPE_VIDEO) { + frameRate = manifestFormat.frameRate; + } + + // Merge manifest and sample format values. + @C.SelectionFlags int selectionFlags = this.selectionFlags | manifestFormat.selectionFlags; + @C.RoleFlags int roleFlags = this.roleFlags | manifestFormat.roleFlags; + DrmInitData drmInitData = + DrmInitData.createSessionCreationData(manifestFormat.drmInitData, this.drmInitData); + + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + public Format copyWithGaplessInfo(int encoderDelay, int encoderPadding) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + public Format copyWithFrameRate(float frameRate) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + public Format copyWithDrmInitData(@Nullable DrmInitData drmInitData) { + return copyWithAdjustments(drmInitData, metadata); + } + + public Format copyWithMetadata(@Nullable Metadata metadata) { + return copyWithAdjustments(drmInitData, metadata); + } + + @SuppressWarnings("ReferenceEquality") + public Format copyWithAdjustments( + @Nullable DrmInitData drmInitData, @Nullable Metadata metadata) { + if (drmInitData == this.drmInitData && metadata == this.metadata) { + return this; + } + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + public Format copyWithRotationDegrees(int rotationDegrees) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + public Format copyWithBitrate(int bitrate) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + public Format copyWithVideoSize(int width, int height) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + public Format copyWithExoMediaCryptoType( + @Nullable Class exoMediaCryptoType) { + return new Format( + id, + label, + selectionFlags, + roleFlags, + bitrate, + codecs, + metadata, + containerMimeType, + sampleMimeType, + maxInputSize, + initializationData, + drmInitData, + subsampleOffsetUs, + width, + height, + frameRate, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + channelCount, + sampleRate, + pcmEncoding, + encoderDelay, + encoderPadding, + language, + accessibilityChannel, + exoMediaCryptoType); + } + + /** + * Returns the number of pixels if this is a video format whose {@link #width} and {@link #height} + * are known, or {@link #NO_VALUE} otherwise + */ + public int getPixelCount() { + return width == NO_VALUE || height == NO_VALUE ? NO_VALUE : (width * height); + } + + @Override + public String toString() { + return "Format(" + + id + + ", " + + label + + ", " + + containerMimeType + + ", " + + sampleMimeType + + ", " + + codecs + + ", " + + bitrate + + ", " + + language + + ", [" + + width + + ", " + + height + + ", " + + frameRate + + "]" + + ", [" + + channelCount + + ", " + + sampleRate + + "])"; + } + + @Override + public int hashCode() { + if (hashCode == 0) { + // Some fields for which hashing is expensive are deliberately omitted. + int result = 17; + result = 31 * result + (id == null ? 0 : id.hashCode()); + result = 31 * result + (label != null ? label.hashCode() : 0); + result = 31 * result + selectionFlags; + result = 31 * result + roleFlags; + result = 31 * result + bitrate; + result = 31 * result + (codecs == null ? 0 : codecs.hashCode()); + result = 31 * result + (metadata == null ? 0 : metadata.hashCode()); + // Container specific. + result = 31 * result + (containerMimeType == null ? 0 : containerMimeType.hashCode()); + // Elementary stream specific. + result = 31 * result + (sampleMimeType == null ? 0 : sampleMimeType.hashCode()); + result = 31 * result + maxInputSize; + // [Omitted] initializationData. + // [Omitted] drmInitData. + result = 31 * result + (int) subsampleOffsetUs; + // Video specific. + result = 31 * result + width; + result = 31 * result + height; + result = 31 * result + Float.floatToIntBits(frameRate); + result = 31 * result + rotationDegrees; + result = 31 * result + Float.floatToIntBits(pixelWidthHeightRatio); + // [Omitted] projectionData. + result = 31 * result + stereoMode; + // [Omitted] colorInfo. + // Audio specific. + result = 31 * result + channelCount; + result = 31 * result + sampleRate; + result = 31 * result + pcmEncoding; + result = 31 * result + encoderDelay; + result = 31 * result + encoderPadding; + // Audio and text specific. + result = 31 * result + (language == null ? 0 : language.hashCode()); + result = 31 * result + accessibilityChannel; + // Provided by source. + result = 31 * result + (exoMediaCryptoType == null ? 0 : exoMediaCryptoType.hashCode()); + hashCode = result; + } + return hashCode; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + Format other = (Format) obj; + if (hashCode != 0 && other.hashCode != 0 && hashCode != other.hashCode) { + return false; + } + // Field equality checks ordered by type, with the cheapest checks first. + return selectionFlags == other.selectionFlags + && roleFlags == other.roleFlags + && bitrate == other.bitrate + && maxInputSize == other.maxInputSize + && subsampleOffsetUs == other.subsampleOffsetUs + && width == other.width + && height == other.height + && rotationDegrees == other.rotationDegrees + && stereoMode == other.stereoMode + && channelCount == other.channelCount + && sampleRate == other.sampleRate + && pcmEncoding == other.pcmEncoding + && encoderDelay == other.encoderDelay + && encoderPadding == other.encoderPadding + && accessibilityChannel == other.accessibilityChannel + && Float.compare(frameRate, other.frameRate) == 0 + && Float.compare(pixelWidthHeightRatio, other.pixelWidthHeightRatio) == 0 + && Util.areEqual(exoMediaCryptoType, other.exoMediaCryptoType) + && Util.areEqual(id, other.id) + && Util.areEqual(label, other.label) + && Util.areEqual(codecs, other.codecs) + && Util.areEqual(containerMimeType, other.containerMimeType) + && Util.areEqual(sampleMimeType, other.sampleMimeType) + && Util.areEqual(language, other.language) + && Arrays.equals(projectionData, other.projectionData) + && Util.areEqual(metadata, other.metadata) + && Util.areEqual(colorInfo, other.colorInfo) + && Util.areEqual(drmInitData, other.drmInitData) + && initializationDataEquals(other); + } + + /** + * Returns whether the {@link #initializationData}s belonging to this format and {@code other} are + * equal. + * + * @param other The other format whose {@link #initializationData} is being compared. + * @return Whether the {@link #initializationData}s belonging to this format and {@code other} are + * equal. + */ + public boolean initializationDataEquals(Format other) { + if (initializationData.size() != other.initializationData.size()) { + return false; + } + for (int i = 0; i < initializationData.size(); i++) { + if (!Arrays.equals(initializationData.get(i), other.initializationData.get(i))) { + return false; + } + } + return true; + } + + // Utility methods + + /** Returns a prettier {@link String} than {@link #toString()}, intended for logging. */ + public static String toLogString(@Nullable Format format) { + if (format == null) { + return "null"; + } + StringBuilder builder = new StringBuilder(); + builder.append("id=").append(format.id).append(", mimeType=").append(format.sampleMimeType); + if (format.bitrate != Format.NO_VALUE) { + builder.append(", bitrate=").append(format.bitrate); + } + if (format.codecs != null) { + builder.append(", codecs=").append(format.codecs); + } + if (format.width != Format.NO_VALUE && format.height != Format.NO_VALUE) { + builder.append(", res=").append(format.width).append("x").append(format.height); + } + if (format.frameRate != Format.NO_VALUE) { + builder.append(", fps=").append(format.frameRate); + } + if (format.channelCount != Format.NO_VALUE) { + builder.append(", channels=").append(format.channelCount); + } + if (format.sampleRate != Format.NO_VALUE) { + builder.append(", sample_rate=").append(format.sampleRate); + } + if (format.language != null) { + builder.append(", language=").append(format.language); + } + if (format.label != null) { + builder.append(", label=").append(format.label); + } + return builder.toString(); + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(id); + dest.writeString(label); + dest.writeInt(selectionFlags); + dest.writeInt(roleFlags); + dest.writeInt(bitrate); + dest.writeString(codecs); + dest.writeParcelable(metadata, 0); + // Container specific. + dest.writeString(containerMimeType); + // Elementary stream specific. + dest.writeString(sampleMimeType); + dest.writeInt(maxInputSize); + int initializationDataSize = initializationData.size(); + dest.writeInt(initializationDataSize); + for (int i = 0; i < initializationDataSize; i++) { + dest.writeByteArray(initializationData.get(i)); + } + dest.writeParcelable(drmInitData, 0); + dest.writeLong(subsampleOffsetUs); + // Video specific. + dest.writeInt(width); + dest.writeInt(height); + dest.writeFloat(frameRate); + dest.writeInt(rotationDegrees); + dest.writeFloat(pixelWidthHeightRatio); + Util.writeBoolean(dest, projectionData != null); + if (projectionData != null) { + dest.writeByteArray(projectionData); + } + dest.writeInt(stereoMode); + dest.writeParcelable(colorInfo, flags); + // Audio specific. + dest.writeInt(channelCount); + dest.writeInt(sampleRate); + dest.writeInt(pcmEncoding); + dest.writeInt(encoderDelay); + dest.writeInt(encoderPadding); + // Audio and text specific. + dest.writeString(language); + dest.writeInt(accessibilityChannel); + } + + public static final Creator CREATOR = new Creator() { + + @Override + public Format createFromParcel(Parcel in) { + return new Format(in); + } + + @Override + public Format[] newArray(int size) { + return new Format[size]; + } + + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/FormatHolder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/FormatHolder.java new file mode 100644 index 0000000000..35e87f1271 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/FormatHolder.java @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; + +/** + * Holds a {@link Format}. + */ +public final class FormatHolder { + + /** Whether the {@link #format} setter also sets the {@link #drmSession} field. */ + // TODO: Remove once all Renderers and MediaSources have migrated to the new DRM model [Internal + // ref: b/129764794]. + public boolean includesDrmSession; + + /** An accompanying context for decrypting samples in the format. */ + @Nullable public DrmSession drmSession; + + /** The held {@link Format}. */ + @Nullable public Format format; + + /** Clears the holder. */ + public void clear() { + includesDrmSession = false; + drmSession = null; + format = null; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/IllegalSeekPositionException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/IllegalSeekPositionException.java new file mode 100644 index 0000000000..fd1423fc90 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/IllegalSeekPositionException.java @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +/** + * Thrown when an attempt is made to seek to a position that does not exist in the player's + * {@link Timeline}. + */ +public final class IllegalSeekPositionException extends IllegalStateException { + + /** + * The {@link Timeline} in which the seek was attempted. + */ + public final Timeline timeline; + /** + * The index of the window being seeked to. + */ + public final int windowIndex; + /** + * The seek position in the specified window. + */ + public final long positionMs; + + /** + * @param timeline The {@link Timeline} in which the seek was attempted. + * @param windowIndex The index of the window being seeked to. + * @param positionMs The seek position in the specified window. + */ + public IllegalSeekPositionException(Timeline timeline, int windowIndex, long positionMs) { + this.timeline = timeline; + this.windowIndex = windowIndex; + this.positionMs = positionMs; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/LoadControl.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/LoadControl.java new file mode 100644 index 0000000000..5076018d65 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/LoadControl.java @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; + +/** + * Controls buffering of media. + */ +public interface LoadControl { + + /** + * Called by the player when prepared with a new source. + */ + void onPrepared(); + + /** + * Called by the player when a track selection occurs. + * + * @param renderers The renderers. + * @param trackGroups The {@link TrackGroup}s from which the selection was made. + * @param trackSelections The track selections that were made. + */ + void onTracksSelected(Renderer[] renderers, TrackGroupArray trackGroups, + TrackSelectionArray trackSelections); + + /** + * Called by the player when stopped. + */ + void onStopped(); + + /** + * Called by the player when released. + */ + void onReleased(); + + /** + * Returns the {@link Allocator} that should be used to obtain media buffer allocations. + */ + Allocator getAllocator(); + + /** + * Returns the duration of media to retain in the buffer prior to the current playback position, + * for fast backward seeking. + *

+ * Note: If {@link #retainBackBufferFromKeyframe()} is false then seeking in the back-buffer will + * only be fast if the back-buffer contains a keyframe prior to the seek position. + *

+ * Note: Implementations should return a single value. Dynamic changes to the back-buffer are not + * currently supported. + * + * @return The duration of media to retain in the buffer prior to the current playback position, + * in microseconds. + */ + long getBackBufferDurationUs(); + + /** + * Returns whether media should be retained from the keyframe before the current playback position + * minus {@link #getBackBufferDurationUs()}, rather than any sample before or at that position. + *

+ * Warning: Returning true will cause the back-buffer size to depend on the spacing of keyframes + * in the media being played. Returning true is not recommended unless you control the media and + * are comfortable with the back-buffer size exceeding {@link #getBackBufferDurationUs()} by as + * much as the maximum duration between adjacent keyframes in the media. + *

+ * Note: Implementations should return a single value. Dynamic changes to the back-buffer are not + * currently supported. + * + * @return Whether media should be retained from the keyframe before the current playback position + * minus {@link #getBackBufferDurationUs()}, rather than any sample before or at that position. + */ + boolean retainBackBufferFromKeyframe(); + + /** + * Called by the player to determine whether it should continue to load the source. + * + * @param bufferedDurationUs The duration of media that's currently buffered. + * @param playbackSpeed The current playback speed. + * @return Whether the loading should continue. + */ + boolean shouldContinueLoading(long bufferedDurationUs, float playbackSpeed); + + /** + * Called repeatedly by the player when it's loading the source, has yet to start playback, and + * has the minimum amount of data necessary for playback to be started. The value returned + * determines whether playback is actually started. The load control may opt to return {@code + * false} until some condition has been met (e.g. a certain amount of media is buffered). + * + * @param bufferedDurationUs The duration of media that's currently buffered. + * @param playbackSpeed The current playback speed. + * @param rebuffering Whether the player is rebuffering. A rebuffer is defined to be caused by + * buffer depletion rather than a user action. Hence this parameter is false during initial + * buffering and when buffering as a result of a seek operation. + * @return Whether playback should be allowed to start or resume. + */ + boolean shouldStartPlayback(long bufferedDurationUs, float playbackSpeed, boolean rebuffering); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodHolder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodHolder.java new file mode 100644 index 0000000000..66cb9a1fce --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodHolder.java @@ -0,0 +1,432 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ClippingMediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.EmptySampleStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectorResult; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** Holds a {@link MediaPeriod} with information required to play it as part of a timeline. */ +/* package */ final class MediaPeriodHolder { + + private static final String TAG = "MediaPeriodHolder"; + + /** The {@link MediaPeriod} wrapped by this class. */ + public final MediaPeriod mediaPeriod; + /** The unique timeline period identifier the media period belongs to. */ + public final Object uid; + /** + * The sample streams for each renderer associated with this period. May contain null elements. + */ + public final @NullableType SampleStream[] sampleStreams; + + /** Whether the media period has finished preparing. */ + public boolean prepared; + /** Whether any of the tracks of this media period are enabled. */ + public boolean hasEnabledTracks; + /** {@link MediaPeriodInfo} about this media period. */ + public MediaPeriodInfo info; + + private final boolean[] mayRetainStreamFlags; + private final RendererCapabilities[] rendererCapabilities; + private final TrackSelector trackSelector; + private final MediaSource mediaSource; + + @Nullable private MediaPeriodHolder next; + private TrackGroupArray trackGroups; + private TrackSelectorResult trackSelectorResult; + private long rendererPositionOffsetUs; + + /** + * Creates a new holder with information required to play it as part of a timeline. + * + * @param rendererCapabilities The renderer capabilities. + * @param rendererPositionOffsetUs The renderer time of the start of the period, in microseconds. + * @param trackSelector The track selector. + * @param allocator The allocator. + * @param mediaSource The media source that produced the media period. + * @param info Information used to identify this media period in its timeline period. + * @param emptyTrackSelectorResult A {@link TrackSelectorResult} with empty selections for each + * renderer. + */ + public MediaPeriodHolder( + RendererCapabilities[] rendererCapabilities, + long rendererPositionOffsetUs, + TrackSelector trackSelector, + Allocator allocator, + MediaSource mediaSource, + MediaPeriodInfo info, + TrackSelectorResult emptyTrackSelectorResult) { + this.rendererCapabilities = rendererCapabilities; + this.rendererPositionOffsetUs = rendererPositionOffsetUs; + this.trackSelector = trackSelector; + this.mediaSource = mediaSource; + this.uid = info.id.periodUid; + this.info = info; + this.trackGroups = TrackGroupArray.EMPTY; + this.trackSelectorResult = emptyTrackSelectorResult; + sampleStreams = new SampleStream[rendererCapabilities.length]; + mayRetainStreamFlags = new boolean[rendererCapabilities.length]; + mediaPeriod = + createMediaPeriod( + info.id, mediaSource, allocator, info.startPositionUs, info.endPositionUs); + } + + /** + * Converts time relative to the start of the period to the respective renderer time using {@link + * #getRendererOffset()}, in microseconds. + */ + public long toRendererTime(long periodTimeUs) { + return periodTimeUs + getRendererOffset(); + } + + /** + * Converts renderer time to the respective time relative to the start of the period using {@link + * #getRendererOffset()}, in microseconds. + */ + public long toPeriodTime(long rendererTimeUs) { + return rendererTimeUs - getRendererOffset(); + } + + /** Returns the renderer time of the start of the period, in microseconds. */ + public long getRendererOffset() { + return rendererPositionOffsetUs; + } + + /** + * Sets the renderer time of the start of the period, in microseconds. + * + * @param rendererPositionOffsetUs The new renderer position offset, in microseconds. + */ + public void setRendererOffset(long rendererPositionOffsetUs) { + this.rendererPositionOffsetUs = rendererPositionOffsetUs; + } + + /** Returns start position of period in renderer time. */ + public long getStartPositionRendererTime() { + return info.startPositionUs + rendererPositionOffsetUs; + } + + /** Returns whether the period is fully buffered. */ + public boolean isFullyBuffered() { + return prepared + && (!hasEnabledTracks || mediaPeriod.getBufferedPositionUs() == C.TIME_END_OF_SOURCE); + } + + /** + * Returns the buffered position in microseconds. If the period is buffered to the end, then the + * period duration is returned. + * + * @return The buffered position in microseconds. + */ + public long getBufferedPositionUs() { + if (!prepared) { + return info.startPositionUs; + } + long bufferedPositionUs = + hasEnabledTracks ? mediaPeriod.getBufferedPositionUs() : C.TIME_END_OF_SOURCE; + return bufferedPositionUs == C.TIME_END_OF_SOURCE ? info.durationUs : bufferedPositionUs; + } + + /** + * Returns the next load time relative to the start of the period, or {@link C#TIME_END_OF_SOURCE} + * if loading has finished. + */ + public long getNextLoadPositionUs() { + return !prepared ? 0 : mediaPeriod.getNextLoadPositionUs(); + } + + /** + * Handles period preparation. + * + * @param playbackSpeed The current playback speed. + * @param timeline The current {@link Timeline}. + * @throws ExoPlaybackException If an error occurs during track selection. + */ + public void handlePrepared(float playbackSpeed, Timeline timeline) throws ExoPlaybackException { + prepared = true; + trackGroups = mediaPeriod.getTrackGroups(); + TrackSelectorResult selectorResult = selectTracks(playbackSpeed, timeline); + long newStartPositionUs = + applyTrackSelection( + selectorResult, info.startPositionUs, /* forceRecreateStreams= */ false); + rendererPositionOffsetUs += info.startPositionUs - newStartPositionUs; + info = info.copyWithStartPositionUs(newStartPositionUs); + } + + /** + * Reevaluates the buffer of the media period at the given renderer position. Should only be + * called if this is the loading media period. + * + * @param rendererPositionUs The playing position in renderer time, in microseconds. + */ + public void reevaluateBuffer(long rendererPositionUs) { + Assertions.checkState(isLoadingMediaPeriod()); + if (prepared) { + mediaPeriod.reevaluateBuffer(toPeriodTime(rendererPositionUs)); + } + } + + /** + * Continues loading the media period at the given renderer position. Should only be called if + * this is the loading media period. + * + * @param rendererPositionUs The load position in renderer time, in microseconds. + */ + public void continueLoading(long rendererPositionUs) { + Assertions.checkState(isLoadingMediaPeriod()); + long loadingPeriodPositionUs = toPeriodTime(rendererPositionUs); + mediaPeriod.continueLoading(loadingPeriodPositionUs); + } + + /** + * Selects tracks for the period. Must only be called if {@link #prepared} is {@code true}. + * + *

The new track selection needs to be applied with {@link + * #applyTrackSelection(TrackSelectorResult, long, boolean)} before taking effect. + * + * @param playbackSpeed The current playback speed. + * @param timeline The current {@link Timeline}. + * @return The {@link TrackSelectorResult}. + * @throws ExoPlaybackException If an error occurs during track selection. + */ + public TrackSelectorResult selectTracks(float playbackSpeed, Timeline timeline) + throws ExoPlaybackException { + TrackSelectorResult selectorResult = + trackSelector.selectTracks(rendererCapabilities, getTrackGroups(), info.id, timeline); + for (TrackSelection trackSelection : selectorResult.selections.getAll()) { + if (trackSelection != null) { + trackSelection.onPlaybackSpeed(playbackSpeed); + } + } + return selectorResult; + } + + /** + * Applies a {@link TrackSelectorResult} to the period. + * + * @param trackSelectorResult The {@link TrackSelectorResult} to apply. + * @param positionUs The position relative to the start of the period at which to apply the new + * track selections, in microseconds. + * @param forceRecreateStreams Whether all streams are forced to be recreated. + * @return The actual position relative to the start of the period at which the new track + * selections are applied. + */ + public long applyTrackSelection( + TrackSelectorResult trackSelectorResult, long positionUs, boolean forceRecreateStreams) { + return applyTrackSelection( + trackSelectorResult, + positionUs, + forceRecreateStreams, + new boolean[rendererCapabilities.length]); + } + + /** + * Applies a {@link TrackSelectorResult} to the period. + * + * @param newTrackSelectorResult The {@link TrackSelectorResult} to apply. + * @param positionUs The position relative to the start of the period at which to apply the new + * track selections, in microseconds. + * @param forceRecreateStreams Whether all streams are forced to be recreated. + * @param streamResetFlags Will be populated to indicate which streams have been reset or were + * newly created. + * @return The actual position relative to the start of the period at which the new track + * selections are applied. + */ + public long applyTrackSelection( + TrackSelectorResult newTrackSelectorResult, + long positionUs, + boolean forceRecreateStreams, + boolean[] streamResetFlags) { + for (int i = 0; i < newTrackSelectorResult.length; i++) { + mayRetainStreamFlags[i] = + !forceRecreateStreams && newTrackSelectorResult.isEquivalent(trackSelectorResult, i); + } + + // Undo the effect of previous call to associate no-sample renderers with empty tracks + // so the mediaPeriod receives back whatever it sent us before. + disassociateNoSampleRenderersWithEmptySampleStream(sampleStreams); + disableTrackSelectionsInResult(); + trackSelectorResult = newTrackSelectorResult; + enableTrackSelectionsInResult(); + // Disable streams on the period and get new streams for updated/newly-enabled tracks. + TrackSelectionArray trackSelections = newTrackSelectorResult.selections; + positionUs = + mediaPeriod.selectTracks( + trackSelections.getAll(), + mayRetainStreamFlags, + sampleStreams, + streamResetFlags, + positionUs); + associateNoSampleRenderersWithEmptySampleStream(sampleStreams); + + // Update whether we have enabled tracks and sanity check the expected streams are non-null. + hasEnabledTracks = false; + for (int i = 0; i < sampleStreams.length; i++) { + if (sampleStreams[i] != null) { + Assertions.checkState(newTrackSelectorResult.isRendererEnabled(i)); + // hasEnabledTracks should be true only when non-empty streams exists. + if (rendererCapabilities[i].getTrackType() != C.TRACK_TYPE_NONE) { + hasEnabledTracks = true; + } + } else { + Assertions.checkState(trackSelections.get(i) == null); + } + } + return positionUs; + } + + /** Releases the media period. No other method should be called after the release. */ + public void release() { + disableTrackSelectionsInResult(); + releaseMediaPeriod(info.endPositionUs, mediaSource, mediaPeriod); + } + + /** + * Sets the next media period holder in the queue. + * + * @param nextMediaPeriodHolder The next holder, or null if this will be the new loading media + * period holder at the end of the queue. + */ + public void setNext(@Nullable MediaPeriodHolder nextMediaPeriodHolder) { + if (nextMediaPeriodHolder == next) { + return; + } + disableTrackSelectionsInResult(); + next = nextMediaPeriodHolder; + enableTrackSelectionsInResult(); + } + + /** + * Returns the next media period holder in the queue, or null if this is the last media period + * (and thus the loading media period). + */ + @Nullable + public MediaPeriodHolder getNext() { + return next; + } + + /** Returns the {@link TrackGroupArray} exposed by this media period. */ + public TrackGroupArray getTrackGroups() { + return trackGroups; + } + + /** Returns the {@link TrackSelectorResult} which is currently applied. */ + public TrackSelectorResult getTrackSelectorResult() { + return trackSelectorResult; + } + + private void enableTrackSelectionsInResult() { + if (!isLoadingMediaPeriod()) { + return; + } + for (int i = 0; i < trackSelectorResult.length; i++) { + boolean rendererEnabled = trackSelectorResult.isRendererEnabled(i); + TrackSelection trackSelection = trackSelectorResult.selections.get(i); + if (rendererEnabled && trackSelection != null) { + trackSelection.enable(); + } + } + } + + private void disableTrackSelectionsInResult() { + if (!isLoadingMediaPeriod()) { + return; + } + for (int i = 0; i < trackSelectorResult.length; i++) { + boolean rendererEnabled = trackSelectorResult.isRendererEnabled(i); + TrackSelection trackSelection = trackSelectorResult.selections.get(i); + if (rendererEnabled && trackSelection != null) { + trackSelection.disable(); + } + } + } + + /** + * For each renderer of type {@link C#TRACK_TYPE_NONE}, we will remove the dummy {@link + * EmptySampleStream} that was associated with it. + */ + private void disassociateNoSampleRenderersWithEmptySampleStream( + @NullableType SampleStream[] sampleStreams) { + for (int i = 0; i < rendererCapabilities.length; i++) { + if (rendererCapabilities[i].getTrackType() == C.TRACK_TYPE_NONE) { + sampleStreams[i] = null; + } + } + } + + /** + * For each renderer of type {@link C#TRACK_TYPE_NONE} that was enabled, we will associate it with + * a dummy {@link EmptySampleStream}. + */ + private void associateNoSampleRenderersWithEmptySampleStream( + @NullableType SampleStream[] sampleStreams) { + for (int i = 0; i < rendererCapabilities.length; i++) { + if (rendererCapabilities[i].getTrackType() == C.TRACK_TYPE_NONE + && trackSelectorResult.isRendererEnabled(i)) { + sampleStreams[i] = new EmptySampleStream(); + } + } + } + + private boolean isLoadingMediaPeriod() { + return next == null; + } + + /** Returns a media period corresponding to the given {@code id}. */ + private static MediaPeriod createMediaPeriod( + MediaPeriodId id, + MediaSource mediaSource, + Allocator allocator, + long startPositionUs, + long endPositionUs) { + MediaPeriod mediaPeriod = mediaSource.createPeriod(id, allocator, startPositionUs); + if (endPositionUs != C.TIME_UNSET && endPositionUs != C.TIME_END_OF_SOURCE) { + mediaPeriod = + new ClippingMediaPeriod( + mediaPeriod, /* enableInitialDiscontinuity= */ true, /* startUs= */ 0, endPositionUs); + } + return mediaPeriod; + } + + /** Releases the given {@code mediaPeriod}, logging and suppressing any errors. */ + private static void releaseMediaPeriod( + long endPositionUs, MediaSource mediaSource, MediaPeriod mediaPeriod) { + try { + if (endPositionUs != C.TIME_UNSET && endPositionUs != C.TIME_END_OF_SOURCE) { + mediaSource.releasePeriod(((ClippingMediaPeriod) mediaPeriod).mediaPeriod); + } else { + mediaSource.releasePeriod(mediaPeriod); + } + } catch (RuntimeException e) { + // There's nothing we can do. + Log.e(TAG, "Period release failed.", e); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodInfo.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodInfo.java new file mode 100644 index 0000000000..b240fe0f91 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodInfo.java @@ -0,0 +1,141 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** Stores the information required to load and play a {@link MediaPeriod}. */ +/* package */ final class MediaPeriodInfo { + + /** The media period's identifier. */ + public final MediaPeriodId id; + /** The start position of the media to play within the media period, in microseconds. */ + public final long startPositionUs; + /** + * If this is an ad, the position to play in the next content media period. {@link C#TIME_UNSET} + * if this is not an ad or the next content media period should be played from its default + * position. + */ + public final long contentPositionUs; + /** + * The end position to which the media period's content is clipped in order to play a following ad + * group, in microseconds, or {@link C#TIME_UNSET} if there is no following ad group or if this + * media period is an ad. The value {@link C#TIME_END_OF_SOURCE} indicates that a postroll ad + * follows at the end of this content media period. + */ + public final long endPositionUs; + /** + * The duration of the media period, like {@link #endPositionUs} but with {@link + * C#TIME_END_OF_SOURCE} and {@link C#TIME_UNSET} resolved to the timeline period duration if + * known. + */ + public final long durationUs; + /** + * Whether this is the last media period in its timeline period (e.g., a postroll ad, or a media + * period corresponding to a timeline period without ads). + */ + public final boolean isLastInTimelinePeriod; + /** + * Whether this is the last media period in the entire timeline. If true, {@link + * #isLastInTimelinePeriod} will also be true. + */ + public final boolean isFinal; + + MediaPeriodInfo( + MediaPeriodId id, + long startPositionUs, + long contentPositionUs, + long endPositionUs, + long durationUs, + boolean isLastInTimelinePeriod, + boolean isFinal) { + this.id = id; + this.startPositionUs = startPositionUs; + this.contentPositionUs = contentPositionUs; + this.endPositionUs = endPositionUs; + this.durationUs = durationUs; + this.isLastInTimelinePeriod = isLastInTimelinePeriod; + this.isFinal = isFinal; + } + + /** + * Returns a copy of this instance with the start position set to the specified value. May return + * the same instance if nothing changed. + */ + public MediaPeriodInfo copyWithStartPositionUs(long startPositionUs) { + return startPositionUs == this.startPositionUs + ? this + : new MediaPeriodInfo( + id, + startPositionUs, + contentPositionUs, + endPositionUs, + durationUs, + isLastInTimelinePeriod, + isFinal); + } + + /** + * Returns a copy of this instance with the content position set to the specified value. May + * return the same instance if nothing changed. + */ + public MediaPeriodInfo copyWithContentPositionUs(long contentPositionUs) { + return contentPositionUs == this.contentPositionUs + ? this + : new MediaPeriodInfo( + id, + startPositionUs, + contentPositionUs, + endPositionUs, + durationUs, + isLastInTimelinePeriod, + isFinal); + } + + @Override + public boolean equals(@Nullable Object o) { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + MediaPeriodInfo that = (MediaPeriodInfo) o; + return startPositionUs == that.startPositionUs + && contentPositionUs == that.contentPositionUs + && endPositionUs == that.endPositionUs + && durationUs == that.durationUs + && isLastInTimelinePeriod == that.isLastInTimelinePeriod + && isFinal == that.isFinal + && Util.areEqual(id, that.id); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + id.hashCode(); + result = 31 * result + (int) startPositionUs; + result = 31 * result + (int) contentPositionUs; + result = 31 * result + (int) endPositionUs; + result = 31 * result + (int) durationUs; + result = 31 * result + (isLastInTimelinePeriod ? 1 : 0); + result = 31 * result + (isFinal ? 1 : 0); + return result; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodQueue.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodQueue.java new file mode 100644 index 0000000000..941fb61848 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/MediaPeriodQueue.java @@ -0,0 +1,743 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.RepeatMode; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectorResult; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * Holds a queue of media periods, from the currently playing media period at the front to the + * loading media period at the end of the queue, with methods for controlling loading and updating + * the queue. Also has a reference to the media period currently being read. + */ +/* package */ final class MediaPeriodQueue { + + /** + * Limits the maximum number of periods to buffer ahead of the current playing period. The + * buffering policy normally prevents buffering too far ahead, but the policy could allow too many + * small periods to be buffered if the period count were not limited. + */ + private static final int MAXIMUM_BUFFER_AHEAD_PERIODS = 100; + + private final Timeline.Period period; + private final Timeline.Window window; + + private long nextWindowSequenceNumber; + private Timeline timeline; + private @RepeatMode int repeatMode; + private boolean shuffleModeEnabled; + @Nullable private MediaPeriodHolder playing; + @Nullable private MediaPeriodHolder reading; + @Nullable private MediaPeriodHolder loading; + private int length; + @Nullable private Object oldFrontPeriodUid; + private long oldFrontPeriodWindowSequenceNumber; + + /** Creates a new media period queue. */ + public MediaPeriodQueue() { + period = new Timeline.Period(); + window = new Timeline.Window(); + timeline = Timeline.EMPTY; + } + + /** + * Sets the {@link Timeline}. Call {@link #updateQueuedPeriods(long, long)} to update the queued + * media periods to take into account the new timeline. + */ + public void setTimeline(Timeline timeline) { + this.timeline = timeline; + } + + /** + * Sets the {@link RepeatMode} and returns whether the repeat mode change has been fully handled. + * If not, it is necessary to seek to the current playback position. + */ + public boolean updateRepeatMode(@RepeatMode int repeatMode) { + this.repeatMode = repeatMode; + return updateForPlaybackModeChange(); + } + + /** + * Sets whether shuffling is enabled and returns whether the shuffle mode change has been fully + * handled. If not, it is necessary to seek to the current playback position. + */ + public boolean updateShuffleModeEnabled(boolean shuffleModeEnabled) { + this.shuffleModeEnabled = shuffleModeEnabled; + return updateForPlaybackModeChange(); + } + + /** Returns whether {@code mediaPeriod} is the current loading media period. */ + public boolean isLoading(MediaPeriod mediaPeriod) { + return loading != null && loading.mediaPeriod == mediaPeriod; + } + + /** + * If there is a loading period, reevaluates its buffer. + * + * @param rendererPositionUs The current renderer position. + */ + public void reevaluateBuffer(long rendererPositionUs) { + if (loading != null) { + loading.reevaluateBuffer(rendererPositionUs); + } + } + + /** Returns whether a new loading media period should be enqueued, if available. */ + public boolean shouldLoadNextMediaPeriod() { + return loading == null + || (!loading.info.isFinal + && loading.isFullyBuffered() + && loading.info.durationUs != C.TIME_UNSET + && length < MAXIMUM_BUFFER_AHEAD_PERIODS); + } + + /** + * Returns the {@link MediaPeriodInfo} for the next media period to load. + * + * @param rendererPositionUs The current renderer position. + * @param playbackInfo The current playback information. + * @return The {@link MediaPeriodInfo} for the next media period to load, or {@code null} if not + * yet known. + */ + public @Nullable MediaPeriodInfo getNextMediaPeriodInfo( + long rendererPositionUs, PlaybackInfo playbackInfo) { + return loading == null + ? getFirstMediaPeriodInfo(playbackInfo) + : getFollowingMediaPeriodInfo(loading, rendererPositionUs); + } + + /** + * Enqueues a new media period holder based on the specified information as the new loading media + * period, and returns it. + * + * @param rendererCapabilities The renderer capabilities. + * @param trackSelector The track selector. + * @param allocator The allocator. + * @param mediaSource The media source that produced the media period. + * @param info Information used to identify this media period in its timeline period. + * @param emptyTrackSelectorResult A {@link TrackSelectorResult} with empty selections for each + * renderer. + */ + public MediaPeriodHolder enqueueNextMediaPeriodHolder( + RendererCapabilities[] rendererCapabilities, + TrackSelector trackSelector, + Allocator allocator, + MediaSource mediaSource, + MediaPeriodInfo info, + TrackSelectorResult emptyTrackSelectorResult) { + long rendererPositionOffsetUs = + loading == null + ? (info.id.isAd() && info.contentPositionUs != C.TIME_UNSET + ? info.contentPositionUs + : 0) + : (loading.getRendererOffset() + loading.info.durationUs - info.startPositionUs); + MediaPeriodHolder newPeriodHolder = + new MediaPeriodHolder( + rendererCapabilities, + rendererPositionOffsetUs, + trackSelector, + allocator, + mediaSource, + info, + emptyTrackSelectorResult); + if (loading != null) { + loading.setNext(newPeriodHolder); + } else { + playing = newPeriodHolder; + reading = newPeriodHolder; + } + oldFrontPeriodUid = null; + loading = newPeriodHolder; + length++; + return newPeriodHolder; + } + + /** + * Returns the loading period holder which is at the end of the queue, or null if the queue is + * empty. + */ + @Nullable + public MediaPeriodHolder getLoadingPeriod() { + return loading; + } + + /** + * Returns the playing period holder which is at the front of the queue, or null if the queue is + * empty. + */ + @Nullable + public MediaPeriodHolder getPlayingPeriod() { + return playing; + } + + /** Returns the reading period holder, or null if the queue is empty. */ + @Nullable + public MediaPeriodHolder getReadingPeriod() { + return reading; + } + + /** + * Continues reading from the next period holder in the queue. + * + * @return The updated reading period holder. + */ + public MediaPeriodHolder advanceReadingPeriod() { + Assertions.checkState(reading != null && reading.getNext() != null); + reading = reading.getNext(); + return reading; + } + + /** + * Dequeues the playing period holder from the front of the queue and advances the playing period + * holder to be the next item in the queue. + * + * @return The updated playing period holder, or null if the queue is or becomes empty. + */ + @Nullable + public MediaPeriodHolder advancePlayingPeriod() { + if (playing == null) { + return null; + } + if (playing == reading) { + reading = playing.getNext(); + } + playing.release(); + length--; + if (length == 0) { + loading = null; + oldFrontPeriodUid = playing.uid; + oldFrontPeriodWindowSequenceNumber = playing.info.id.windowSequenceNumber; + } + playing = playing.getNext(); + return playing; + } + + /** + * Removes all period holders after the given period holder. This process may also remove the + * currently reading period holder. If that is the case, the reading period holder is set to be + * the same as the playing period holder at the front of the queue. + * + * @param mediaPeriodHolder The media period holder that shall be the new end of the queue. + * @return Whether the reading period has been removed. + */ + public boolean removeAfter(MediaPeriodHolder mediaPeriodHolder) { + Assertions.checkState(mediaPeriodHolder != null); + boolean removedReading = false; + loading = mediaPeriodHolder; + while (mediaPeriodHolder.getNext() != null) { + mediaPeriodHolder = mediaPeriodHolder.getNext(); + if (mediaPeriodHolder == reading) { + reading = playing; + removedReading = true; + } + mediaPeriodHolder.release(); + length--; + } + loading.setNext(null); + return removedReading; + } + + /** + * Clears the queue. + * + * @param keepFrontPeriodUid Whether the queue should keep the id of the media period in the front + * of queue (typically the playing one) for later reuse. + */ + public void clear(boolean keepFrontPeriodUid) { + MediaPeriodHolder front = playing; + if (front != null) { + oldFrontPeriodUid = keepFrontPeriodUid ? front.uid : null; + oldFrontPeriodWindowSequenceNumber = front.info.id.windowSequenceNumber; + removeAfter(front); + front.release(); + } else if (!keepFrontPeriodUid) { + oldFrontPeriodUid = null; + } + playing = null; + loading = null; + reading = null; + length = 0; + } + + /** + * Updates media periods in the queue to take into account the latest timeline, and returns + * whether the timeline change has been fully handled. If not, it is necessary to seek to the + * current playback position. The method assumes that the first media period in the queue is still + * consistent with the new timeline. + * + * @param rendererPositionUs The current renderer position in microseconds. + * @param maxRendererReadPositionUs The maximum renderer position up to which renderers have read + * the current reading media period in microseconds, or {@link C#TIME_END_OF_SOURCE} if they + * have read to the end. + * @return Whether the timeline change has been handled completely. + */ + public boolean updateQueuedPeriods(long rendererPositionUs, long maxRendererReadPositionUs) { + // TODO: Merge this into setTimeline so that the queue gets updated as soon as the new timeline + // is set, once all cases handled by ExoPlayerImplInternal.handleSourceInfoRefreshed can be + // handled here. + MediaPeriodHolder previousPeriodHolder = null; + MediaPeriodHolder periodHolder = playing; + while (periodHolder != null) { + MediaPeriodInfo oldPeriodInfo = periodHolder.info; + + // Get period info based on new timeline. + MediaPeriodInfo newPeriodInfo; + if (previousPeriodHolder == null) { + // The id and start position of the first period have already been verified by + // ExoPlayerImplInternal.handleSourceInfoRefreshed. Just update duration, isLastInTimeline + // and isLastInPeriod flags. + newPeriodInfo = getUpdatedMediaPeriodInfo(oldPeriodInfo); + } else { + newPeriodInfo = getFollowingMediaPeriodInfo(previousPeriodHolder, rendererPositionUs); + if (newPeriodInfo == null) { + // We've loaded a next media period that is not in the new timeline. + return !removeAfter(previousPeriodHolder); + } + if (!canKeepMediaPeriodHolder(oldPeriodInfo, newPeriodInfo)) { + // The new media period has a different id or start position. + return !removeAfter(previousPeriodHolder); + } + } + + // Use new period info, but keep old content position. + periodHolder.info = newPeriodInfo.copyWithContentPositionUs(oldPeriodInfo.contentPositionUs); + + if (!areDurationsCompatible(oldPeriodInfo.durationUs, newPeriodInfo.durationUs)) { + // The period duration changed. Remove all subsequent periods and check whether we read + // beyond the new duration. + long newDurationInRendererTime = + newPeriodInfo.durationUs == C.TIME_UNSET + ? Long.MAX_VALUE + : periodHolder.toRendererTime(newPeriodInfo.durationUs); + boolean isReadingAndReadBeyondNewDuration = + periodHolder == reading + && (maxRendererReadPositionUs == C.TIME_END_OF_SOURCE + || maxRendererReadPositionUs >= newDurationInRendererTime); + boolean readingPeriodRemoved = removeAfter(periodHolder); + return !readingPeriodRemoved && !isReadingAndReadBeyondNewDuration; + } + + previousPeriodHolder = periodHolder; + periodHolder = periodHolder.getNext(); + } + return true; + } + + /** + * Returns new media period info based on specified {@code mediaPeriodInfo} but taking into + * account the current timeline. This method must only be called if the period is still part of + * the current timeline. + * + * @param info Media period info for a media period based on an old timeline. + * @return The updated media period info for the current timeline. + */ + public MediaPeriodInfo getUpdatedMediaPeriodInfo(MediaPeriodInfo info) { + MediaPeriodId id = info.id; + boolean isLastInPeriod = isLastInPeriod(id); + boolean isLastInTimeline = isLastInTimeline(id, isLastInPeriod); + timeline.getPeriodByUid(info.id.periodUid, period); + long durationUs = + id.isAd() + ? period.getAdDurationUs(id.adGroupIndex, id.adIndexInAdGroup) + : (info.endPositionUs == C.TIME_UNSET || info.endPositionUs == C.TIME_END_OF_SOURCE + ? period.getDurationUs() + : info.endPositionUs); + return new MediaPeriodInfo( + id, + info.startPositionUs, + info.contentPositionUs, + info.endPositionUs, + durationUs, + isLastInPeriod, + isLastInTimeline); + } + + /** + * Resolves the specified timeline period and position to a {@link MediaPeriodId} that should be + * played, returning an identifier for an ad group if one needs to be played before the specified + * position, or an identifier for a content media period if not. + * + * @param periodUid The uid of the timeline period to play. + * @param positionUs The next content position in the period to play. + * @return The identifier for the first media period to play, taking into account unplayed ads. + */ + public MediaPeriodId resolveMediaPeriodIdForAds(Object periodUid, long positionUs) { + long windowSequenceNumber = resolvePeriodIndexToWindowSequenceNumber(periodUid); + return resolveMediaPeriodIdForAds(periodUid, positionUs, windowSequenceNumber); + } + + // Internal methods. + + /** + * Resolves the specified timeline period and position to a {@link MediaPeriodId} that should be + * played, returning an identifier for an ad group if one needs to be played before the specified + * position, or an identifier for a content media period if not. + * + * @param periodUid The uid of the timeline period to play. + * @param positionUs The next content position in the period to play. + * @param windowSequenceNumber The sequence number of the window in the buffered sequence of + * windows this period is part of. + * @return The identifier for the first media period to play, taking into account unplayed ads. + */ + private MediaPeriodId resolveMediaPeriodIdForAds( + Object periodUid, long positionUs, long windowSequenceNumber) { + timeline.getPeriodByUid(periodUid, period); + int adGroupIndex = period.getAdGroupIndexForPositionUs(positionUs); + if (adGroupIndex == C.INDEX_UNSET) { + int nextAdGroupIndex = period.getAdGroupIndexAfterPositionUs(positionUs); + return new MediaPeriodId(periodUid, windowSequenceNumber, nextAdGroupIndex); + } else { + int adIndexInAdGroup = period.getFirstAdIndexToPlay(adGroupIndex); + return new MediaPeriodId(periodUid, adGroupIndex, adIndexInAdGroup, windowSequenceNumber); + } + } + + /** + * Resolves the specified period uid to a corresponding window sequence number. Either by reusing + * the window sequence number of an existing matching media period or by creating a new window + * sequence number. + * + * @param periodUid The uid of the timeline period. + * @return A window sequence number for a media period created for this timeline period. + */ + private long resolvePeriodIndexToWindowSequenceNumber(Object periodUid) { + int windowIndex = timeline.getPeriodByUid(periodUid, period).windowIndex; + if (oldFrontPeriodUid != null) { + int oldFrontPeriodIndex = timeline.getIndexOfPeriod(oldFrontPeriodUid); + if (oldFrontPeriodIndex != C.INDEX_UNSET) { + int oldFrontWindowIndex = timeline.getPeriod(oldFrontPeriodIndex, period).windowIndex; + if (oldFrontWindowIndex == windowIndex) { + // Try to match old front uid after the queue has been cleared. + return oldFrontPeriodWindowSequenceNumber; + } + } + } + MediaPeriodHolder mediaPeriodHolder = playing; + while (mediaPeriodHolder != null) { + if (mediaPeriodHolder.uid.equals(periodUid)) { + // Reuse window sequence number of first exact period match. + return mediaPeriodHolder.info.id.windowSequenceNumber; + } + mediaPeriodHolder = mediaPeriodHolder.getNext(); + } + mediaPeriodHolder = playing; + while (mediaPeriodHolder != null) { + int indexOfHolderInTimeline = timeline.getIndexOfPeriod(mediaPeriodHolder.uid); + if (indexOfHolderInTimeline != C.INDEX_UNSET) { + int holderWindowIndex = timeline.getPeriod(indexOfHolderInTimeline, period).windowIndex; + if (holderWindowIndex == windowIndex) { + // As an alternative, try to match other periods of the same window. + return mediaPeriodHolder.info.id.windowSequenceNumber; + } + } + mediaPeriodHolder = mediaPeriodHolder.getNext(); + } + // If no match is found, create new sequence number. + long windowSequenceNumber = nextWindowSequenceNumber++; + if (playing == null) { + // If the queue is empty, save it as old front uid to allow later reuse. + oldFrontPeriodUid = periodUid; + oldFrontPeriodWindowSequenceNumber = windowSequenceNumber; + } + return windowSequenceNumber; + } + + /** + * Returns whether a period described by {@code oldInfo} can be kept for playing the media period + * described by {@code newInfo}. + */ + private boolean canKeepMediaPeriodHolder(MediaPeriodInfo oldInfo, MediaPeriodInfo newInfo) { + return oldInfo.startPositionUs == newInfo.startPositionUs && oldInfo.id.equals(newInfo.id); + } + + /** + * Returns whether a duration change of a period is compatible with keeping the following periods. + */ + private boolean areDurationsCompatible(long previousDurationUs, long newDurationUs) { + return previousDurationUs == C.TIME_UNSET || previousDurationUs == newDurationUs; + } + + /** + * Updates the queue for any playback mode change, and returns whether the change was fully + * handled. If not, it is necessary to seek to the current playback position. + */ + private boolean updateForPlaybackModeChange() { + // Find the last existing period holder that matches the new period order. + MediaPeriodHolder lastValidPeriodHolder = playing; + if (lastValidPeriodHolder == null) { + return true; + } + int currentPeriodIndex = timeline.getIndexOfPeriod(lastValidPeriodHolder.uid); + while (true) { + int nextPeriodIndex = + timeline.getNextPeriodIndex( + currentPeriodIndex, period, window, repeatMode, shuffleModeEnabled); + while (lastValidPeriodHolder.getNext() != null + && !lastValidPeriodHolder.info.isLastInTimelinePeriod) { + lastValidPeriodHolder = lastValidPeriodHolder.getNext(); + } + + MediaPeriodHolder nextMediaPeriodHolder = lastValidPeriodHolder.getNext(); + if (nextPeriodIndex == C.INDEX_UNSET || nextMediaPeriodHolder == null) { + break; + } + int nextPeriodHolderPeriodIndex = timeline.getIndexOfPeriod(nextMediaPeriodHolder.uid); + if (nextPeriodHolderPeriodIndex != nextPeriodIndex) { + break; + } + lastValidPeriodHolder = nextMediaPeriodHolder; + currentPeriodIndex = nextPeriodIndex; + } + + // Release any period holders that don't match the new period order. + boolean readingPeriodRemoved = removeAfter(lastValidPeriodHolder); + + // Update the period info for the last holder, as it may now be the last period in the timeline. + lastValidPeriodHolder.info = getUpdatedMediaPeriodInfo(lastValidPeriodHolder.info); + + // If renderers may have read from a period that's been removed, it is necessary to restart. + return !readingPeriodRemoved; + } + + /** + * Returns the first {@link MediaPeriodInfo} to play, based on the specified playback position. + */ + private MediaPeriodInfo getFirstMediaPeriodInfo(PlaybackInfo playbackInfo) { + return getMediaPeriodInfo( + playbackInfo.periodId, playbackInfo.contentPositionUs, playbackInfo.startPositionUs); + } + + /** + * Returns the {@link MediaPeriodInfo} for the media period following {@code mediaPeriodHolder}'s + * media period. + * + * @param mediaPeriodHolder The media period holder. + * @param rendererPositionUs The current renderer position in microseconds. + * @return The following media period's info, or {@code null} if it is not yet possible to get the + * next media period info. + */ + private @Nullable MediaPeriodInfo getFollowingMediaPeriodInfo( + MediaPeriodHolder mediaPeriodHolder, long rendererPositionUs) { + // TODO: This method is called repeatedly from ExoPlayerImplInternal.maybeUpdateLoadingPeriod + // but if the timeline is not ready to provide the next period it can't return a non-null value + // until the timeline is updated. Store whether the next timeline period is ready when the + // timeline is updated, to avoid repeatedly checking the same timeline. + MediaPeriodInfo mediaPeriodInfo = mediaPeriodHolder.info; + // The expected delay until playback transitions to the new period is equal the duration of + // media that's currently buffered (assuming no interruptions). This is used to project forward + // the start position for transitions to new windows. + long bufferedDurationUs = + mediaPeriodHolder.getRendererOffset() + mediaPeriodInfo.durationUs - rendererPositionUs; + if (mediaPeriodInfo.isLastInTimelinePeriod) { + int currentPeriodIndex = timeline.getIndexOfPeriod(mediaPeriodInfo.id.periodUid); + int nextPeriodIndex = + timeline.getNextPeriodIndex( + currentPeriodIndex, period, window, repeatMode, shuffleModeEnabled); + if (nextPeriodIndex == C.INDEX_UNSET) { + // We can't create a next period yet. + return null; + } + + long startPositionUs; + long contentPositionUs; + int nextWindowIndex = + timeline.getPeriod(nextPeriodIndex, period, /* setIds= */ true).windowIndex; + Object nextPeriodUid = period.uid; + long windowSequenceNumber = mediaPeriodInfo.id.windowSequenceNumber; + if (timeline.getWindow(nextWindowIndex, window).firstPeriodIndex == nextPeriodIndex) { + // We're starting to buffer a new window. When playback transitions to this window we'll + // want it to be from its default start position, so project the default start position + // forward by the duration of the buffer, and start buffering from this point. + contentPositionUs = C.TIME_UNSET; + Pair defaultPosition = + timeline.getPeriodPosition( + window, + period, + nextWindowIndex, + /* windowPositionUs= */ C.TIME_UNSET, + /* defaultPositionProjectionUs= */ Math.max(0, bufferedDurationUs)); + if (defaultPosition == null) { + return null; + } + nextPeriodUid = defaultPosition.first; + startPositionUs = defaultPosition.second; + MediaPeriodHolder nextMediaPeriodHolder = mediaPeriodHolder.getNext(); + if (nextMediaPeriodHolder != null && nextMediaPeriodHolder.uid.equals(nextPeriodUid)) { + windowSequenceNumber = nextMediaPeriodHolder.info.id.windowSequenceNumber; + } else { + windowSequenceNumber = nextWindowSequenceNumber++; + } + } else { + // We're starting to buffer a new period within the same window. + startPositionUs = 0; + contentPositionUs = 0; + } + MediaPeriodId periodId = + resolveMediaPeriodIdForAds(nextPeriodUid, startPositionUs, windowSequenceNumber); + return getMediaPeriodInfo(periodId, contentPositionUs, startPositionUs); + } + + MediaPeriodId currentPeriodId = mediaPeriodInfo.id; + timeline.getPeriodByUid(currentPeriodId.periodUid, period); + if (currentPeriodId.isAd()) { + int adGroupIndex = currentPeriodId.adGroupIndex; + int adCountInCurrentAdGroup = period.getAdCountInAdGroup(adGroupIndex); + if (adCountInCurrentAdGroup == C.LENGTH_UNSET) { + return null; + } + int nextAdIndexInAdGroup = + period.getNextAdIndexToPlay(adGroupIndex, currentPeriodId.adIndexInAdGroup); + if (nextAdIndexInAdGroup < adCountInCurrentAdGroup) { + // Play the next ad in the ad group if it's available. + return !period.isAdAvailable(adGroupIndex, nextAdIndexInAdGroup) + ? null + : getMediaPeriodInfoForAd( + currentPeriodId.periodUid, + adGroupIndex, + nextAdIndexInAdGroup, + mediaPeriodInfo.contentPositionUs, + currentPeriodId.windowSequenceNumber); + } else { + // Play content from the ad group position. + long startPositionUs = mediaPeriodInfo.contentPositionUs; + if (startPositionUs == C.TIME_UNSET) { + // If we're transitioning from an ad group to content starting from its default position, + // project the start position forward as if this were a transition to a new window. + Pair defaultPosition = + timeline.getPeriodPosition( + window, + period, + period.windowIndex, + /* windowPositionUs= */ C.TIME_UNSET, + /* defaultPositionProjectionUs= */ Math.max(0, bufferedDurationUs)); + if (defaultPosition == null) { + return null; + } + startPositionUs = defaultPosition.second; + } + return getMediaPeriodInfoForContent( + currentPeriodId.periodUid, startPositionUs, currentPeriodId.windowSequenceNumber); + } + } else { + // Play the next ad group if it's available. + int nextAdGroupIndex = period.getAdGroupIndexForPositionUs(mediaPeriodInfo.endPositionUs); + if (nextAdGroupIndex == C.INDEX_UNSET) { + // The next ad group can't be played. Play content from the previous end position instead. + return getMediaPeriodInfoForContent( + currentPeriodId.periodUid, + /* startPositionUs= */ mediaPeriodInfo.durationUs, + currentPeriodId.windowSequenceNumber); + } + int adIndexInAdGroup = period.getFirstAdIndexToPlay(nextAdGroupIndex); + return !period.isAdAvailable(nextAdGroupIndex, adIndexInAdGroup) + ? null + : getMediaPeriodInfoForAd( + currentPeriodId.periodUid, + nextAdGroupIndex, + adIndexInAdGroup, + /* contentPositionUs= */ mediaPeriodInfo.durationUs, + currentPeriodId.windowSequenceNumber); + } + } + + private MediaPeriodInfo getMediaPeriodInfo( + MediaPeriodId id, long contentPositionUs, long startPositionUs) { + timeline.getPeriodByUid(id.periodUid, period); + if (id.isAd()) { + if (!period.isAdAvailable(id.adGroupIndex, id.adIndexInAdGroup)) { + return null; + } + return getMediaPeriodInfoForAd( + id.periodUid, + id.adGroupIndex, + id.adIndexInAdGroup, + contentPositionUs, + id.windowSequenceNumber); + } else { + return getMediaPeriodInfoForContent(id.periodUid, startPositionUs, id.windowSequenceNumber); + } + } + + private MediaPeriodInfo getMediaPeriodInfoForAd( + Object periodUid, + int adGroupIndex, + int adIndexInAdGroup, + long contentPositionUs, + long windowSequenceNumber) { + MediaPeriodId id = + new MediaPeriodId(periodUid, adGroupIndex, adIndexInAdGroup, windowSequenceNumber); + long durationUs = + timeline + .getPeriodByUid(id.periodUid, period) + .getAdDurationUs(id.adGroupIndex, id.adIndexInAdGroup); + long startPositionUs = + adIndexInAdGroup == period.getFirstAdIndexToPlay(adGroupIndex) + ? period.getAdResumePositionUs() + : 0; + return new MediaPeriodInfo( + id, + startPositionUs, + contentPositionUs, + /* endPositionUs= */ C.TIME_UNSET, + durationUs, + /* isLastInTimelinePeriod= */ false, + /* isFinal= */ false); + } + + private MediaPeriodInfo getMediaPeriodInfoForContent( + Object periodUid, long startPositionUs, long windowSequenceNumber) { + int nextAdGroupIndex = period.getAdGroupIndexAfterPositionUs(startPositionUs); + MediaPeriodId id = new MediaPeriodId(periodUid, windowSequenceNumber, nextAdGroupIndex); + boolean isLastInPeriod = isLastInPeriod(id); + boolean isLastInTimeline = isLastInTimeline(id, isLastInPeriod); + long endPositionUs = + nextAdGroupIndex != C.INDEX_UNSET + ? period.getAdGroupTimeUs(nextAdGroupIndex) + : C.TIME_UNSET; + long durationUs = + endPositionUs == C.TIME_UNSET || endPositionUs == C.TIME_END_OF_SOURCE + ? period.durationUs + : endPositionUs; + return new MediaPeriodInfo( + id, + startPositionUs, + /* contentPositionUs= */ C.TIME_UNSET, + endPositionUs, + durationUs, + isLastInPeriod, + isLastInTimeline); + } + + private boolean isLastInPeriod(MediaPeriodId id) { + return !id.isAd() && id.nextAdGroupIndex == C.INDEX_UNSET; + } + + private boolean isLastInTimeline(MediaPeriodId id, boolean isLastMediaPeriodInPeriod) { + int periodIndex = timeline.getIndexOfPeriod(id.periodUid); + int windowIndex = timeline.getPeriod(periodIndex, period).windowIndex; + return !timeline.getWindow(windowIndex, window).isDynamic + && timeline.isLastPeriod(periodIndex, period, window, repeatMode, shuffleModeEnabled) + && isLastMediaPeriodInPeriod; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/NoSampleRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/NoSampleRenderer.java new file mode 100644 index 0000000000..c4662f1544 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/NoSampleRenderer.java @@ -0,0 +1,306 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MediaClock; +import java.io.IOException; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * A {@link Renderer} implementation whose track type is {@link C#TRACK_TYPE_NONE} and does not + * consume data from its {@link SampleStream}. + */ +public abstract class NoSampleRenderer implements Renderer, RendererCapabilities { + + @MonotonicNonNull private RendererConfiguration configuration; + private int index; + private int state; + @Nullable private SampleStream stream; + private boolean streamIsFinal; + + @Override + public final int getTrackType() { + return C.TRACK_TYPE_NONE; + } + + @Override + public final RendererCapabilities getCapabilities() { + return this; + } + + @Override + public final void setIndex(int index) { + this.index = index; + } + + @Override + @Nullable + public MediaClock getMediaClock() { + return null; + } + + @Override + public final int getState() { + return state; + } + + /** + * Replaces the {@link SampleStream} that will be associated with this renderer. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_DISABLED}. + * + * @param configuration The renderer configuration. + * @param formats The enabled formats. Should be empty. + * @param stream The {@link SampleStream} from which the renderer should consume. + * @param positionUs The player's current position. + * @param joining Whether this renderer is being enabled to join an ongoing playback. + * @param offsetUs The offset that should be subtracted from {@code positionUs} + * to get the playback position with respect to the media. + * @throws ExoPlaybackException If an error occurs. + */ + @Override + public final void enable(RendererConfiguration configuration, Format[] formats, + SampleStream stream, long positionUs, boolean joining, long offsetUs) + throws ExoPlaybackException { + Assertions.checkState(state == STATE_DISABLED); + this.configuration = configuration; + state = STATE_ENABLED; + onEnabled(joining); + replaceStream(formats, stream, offsetUs); + onPositionReset(positionUs, joining); + } + + @Override + public final void start() throws ExoPlaybackException { + Assertions.checkState(state == STATE_ENABLED); + state = STATE_STARTED; + onStarted(); + } + + /** + * Replaces the {@link SampleStream} that will be associated with this renderer. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}, {@link #STATE_STARTED}. + * + * @param formats The enabled formats. Should be empty. + * @param stream The {@link SampleStream} to be associated with this renderer. + * @param offsetUs The offset that should be subtracted from {@code positionUs} in + * {@link #render(long, long)} to get the playback position with respect to the media. + * @throws ExoPlaybackException If an error occurs. + */ + @Override + public final void replaceStream(Format[] formats, SampleStream stream, long offsetUs) + throws ExoPlaybackException { + Assertions.checkState(!streamIsFinal); + this.stream = stream; + onRendererOffsetChanged(offsetUs); + } + + @Override + @Nullable + public final SampleStream getStream() { + return stream; + } + + @Override + public final boolean hasReadStreamToEnd() { + return true; + } + + @Override + public long getReadingPositionUs() { + return C.TIME_END_OF_SOURCE; + } + + @Override + public final void setCurrentStreamFinal() { + streamIsFinal = true; + } + + @Override + public final boolean isCurrentStreamFinal() { + return streamIsFinal; + } + + @Override + public final void maybeThrowStreamError() throws IOException { + } + + @Override + public final void resetPosition(long positionUs) throws ExoPlaybackException { + streamIsFinal = false; + onPositionReset(positionUs, false); + } + + @Override + public final void stop() throws ExoPlaybackException { + Assertions.checkState(state == STATE_STARTED); + state = STATE_ENABLED; + onStopped(); + } + + @Override + public final void disable() { + Assertions.checkState(state == STATE_ENABLED); + state = STATE_DISABLED; + stream = null; + streamIsFinal = false; + onDisabled(); + } + + @Override + public final void reset() { + Assertions.checkState(state == STATE_DISABLED); + onReset(); + } + + @Override + public boolean isReady() { + return true; + } + + @Override + public boolean isEnded() { + return true; + } + + // RendererCapabilities implementation. + + @Override + @Capabilities + public int supportsFormat(Format format) throws ExoPlaybackException { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_TYPE); + } + + @Override + @AdaptiveSupport + public int supportsMixedMimeTypeAdaptation() throws ExoPlaybackException { + return ADAPTIVE_NOT_SUPPORTED; + } + + // PlayerMessage.Target implementation. + + @Override + public void handleMessage(int what, @Nullable Object object) throws ExoPlaybackException { + // Do nothing. + } + + // Methods to be overridden by subclasses. + + /** + * Called when the renderer is enabled. + *

+ * The default implementation is a no-op. + * + * @param joining Whether this renderer is being enabled to join an ongoing playback. + * @throws ExoPlaybackException If an error occurs. + */ + protected void onEnabled(boolean joining) throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called when the renderer's offset has been changed. + *

+ * The default implementation is a no-op. + * + * @param offsetUs The offset that should be subtracted from {@code positionUs} in + * {@link #render(long, long)} to get the playback position with respect to the media. + * @throws ExoPlaybackException If an error occurs. + */ + protected void onRendererOffsetChanged(long offsetUs) throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called when the position is reset. This occurs when the renderer is enabled after + * {@link #onRendererOffsetChanged(long)} has been called, and also when a position + * discontinuity is encountered. + *

+ * The default implementation is a no-op. + * + * @param positionUs The new playback position in microseconds. + * @param joining Whether this renderer is being enabled to join an ongoing playback. + * @throws ExoPlaybackException If an error occurs. + */ + protected void onPositionReset(long positionUs, boolean joining) throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called when the renderer is started. + *

+ * The default implementation is a no-op. + * + * @throws ExoPlaybackException If an error occurs. + */ + protected void onStarted() throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called when the renderer is stopped. + *

+ * The default implementation is a no-op. + * + * @throws ExoPlaybackException If an error occurs. + */ + protected void onStopped() throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called when the renderer is disabled. + *

+ * The default implementation is a no-op. + */ + protected void onDisabled() { + // Do nothing. + } + + /** + * Called when the renderer is reset. + * + *

The default implementation is a no-op. + */ + protected void onReset() { + // Do nothing. + } + + // Methods to be called by subclasses. + + /** + * Returns the configuration set when the renderer was most recently enabled, or {@code null} if + * the renderer has never been enabled. + */ + @Nullable + protected final RendererConfiguration getConfiguration() { + return configuration; + } + + /** + * Returns the index of the renderer within the player. + */ + protected final int getIndex() { + return index; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ParserException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ParserException.java new file mode 100644 index 0000000000..abbe6e8fee --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/ParserException.java @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import java.io.IOException; + +/** + * Thrown when an error occurs parsing media data and metadata. + */ +public class ParserException extends IOException { + + public ParserException() { + super(); + } + + /** + * @param message The detail message for the exception. + */ + public ParserException(String message) { + super(message); + } + + /** + * @param cause The cause for the exception. + */ + public ParserException(Throwable cause) { + super(cause); + } + + /** + * @param message The detail message for the exception. + * @param cause The cause for the exception. + */ + public ParserException(String message, Throwable cause) { + super(message, cause); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackInfo.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackInfo.java new file mode 100644 index 0000000000..c743e35661 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackInfo.java @@ -0,0 +1,358 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.CheckResult; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectorResult; + +/** + * Information about an ongoing playback. + */ +/* package */ final class PlaybackInfo { + + /** + * Dummy media period id used while the timeline is empty and no period id is specified. This id + * is used when playback infos are created with {@link #createDummy(long, TrackSelectorResult)}. + */ + private static final MediaPeriodId DUMMY_MEDIA_PERIOD_ID = + new MediaPeriodId(/* periodUid= */ new Object()); + + /** The current {@link Timeline}. */ + public final Timeline timeline; + /** The {@link MediaPeriodId} of the currently playing media period in the {@link #timeline}. */ + public final MediaPeriodId periodId; + /** + * The start position at which playback started in {@link #periodId} relative to the start of the + * associated period in the {@link #timeline}, in microseconds. Note that this value changes for + * each position discontinuity. + */ + public final long startPositionUs; + /** + * If {@link #periodId} refers to an ad, the position of the suspended content relative to the + * start of the associated period in the {@link #timeline}, in microseconds. {@link C#TIME_UNSET} + * if {@link #periodId} does not refer to an ad or if the suspended content should be played from + * its default position. + */ + public final long contentPositionUs; + /** The current playback state. One of the {@link Player}.STATE_ constants. */ + @Player.State public final int playbackState; + /** The current playback error, or null if this is not an error state. */ + @Nullable public final ExoPlaybackException playbackError; + /** Whether the player is currently loading. */ + public final boolean isLoading; + /** The currently available track groups. */ + public final TrackGroupArray trackGroups; + /** The result of the current track selection. */ + public final TrackSelectorResult trackSelectorResult; + /** The {@link MediaPeriodId} of the currently loading media period in the {@link #timeline}. */ + public final MediaPeriodId loadingMediaPeriodId; + + /** + * Position up to which media is buffered in {@link #loadingMediaPeriodId) relative to the start + * of the associated period in the {@link #timeline}, in microseconds. + */ + public volatile long bufferedPositionUs; + /** + * Total duration of buffered media from {@link #positionUs} to {@link #bufferedPositionUs} + * including all ads. + */ + public volatile long totalBufferedDurationUs; + /** + * Current playback position in {@link #periodId} relative to the start of the associated period + * in the {@link #timeline}, in microseconds. + */ + public volatile long positionUs; + + /** + * Creates empty dummy playback info which can be used for masking as long as no real playback + * info is available. + * + * @param startPositionUs The start position at which playback should start, in microseconds. + * @param emptyTrackSelectorResult An empty track selector result with null entries for each + * renderer. + * @return A dummy playback info. + */ + public static PlaybackInfo createDummy( + long startPositionUs, TrackSelectorResult emptyTrackSelectorResult) { + return new PlaybackInfo( + Timeline.EMPTY, + DUMMY_MEDIA_PERIOD_ID, + startPositionUs, + /* contentPositionUs= */ C.TIME_UNSET, + Player.STATE_IDLE, + /* playbackError= */ null, + /* isLoading= */ false, + TrackGroupArray.EMPTY, + emptyTrackSelectorResult, + DUMMY_MEDIA_PERIOD_ID, + startPositionUs, + /* totalBufferedDurationUs= */ 0, + startPositionUs); + } + + /** + * Create playback info. + * + * @param timeline See {@link #timeline}. + * @param periodId See {@link #periodId}. + * @param startPositionUs See {@link #startPositionUs}. + * @param contentPositionUs See {@link #contentPositionUs}. + * @param playbackState See {@link #playbackState}. + * @param isLoading See {@link #isLoading}. + * @param trackGroups See {@link #trackGroups}. + * @param trackSelectorResult See {@link #trackSelectorResult}. + * @param loadingMediaPeriodId See {@link #loadingMediaPeriodId}. + * @param bufferedPositionUs See {@link #bufferedPositionUs}. + * @param totalBufferedDurationUs See {@link #totalBufferedDurationUs}. + * @param positionUs See {@link #positionUs}. + */ + public PlaybackInfo( + Timeline timeline, + MediaPeriodId periodId, + long startPositionUs, + long contentPositionUs, + @Player.State int playbackState, + @Nullable ExoPlaybackException playbackError, + boolean isLoading, + TrackGroupArray trackGroups, + TrackSelectorResult trackSelectorResult, + MediaPeriodId loadingMediaPeriodId, + long bufferedPositionUs, + long totalBufferedDurationUs, + long positionUs) { + this.timeline = timeline; + this.periodId = periodId; + this.startPositionUs = startPositionUs; + this.contentPositionUs = contentPositionUs; + this.playbackState = playbackState; + this.playbackError = playbackError; + this.isLoading = isLoading; + this.trackGroups = trackGroups; + this.trackSelectorResult = trackSelectorResult; + this.loadingMediaPeriodId = loadingMediaPeriodId; + this.bufferedPositionUs = bufferedPositionUs; + this.totalBufferedDurationUs = totalBufferedDurationUs; + this.positionUs = positionUs; + } + + /** + * Returns dummy media period id for the first-to-be-played period of the current timeline. + * + * @param shuffleModeEnabled Whether shuffle mode is enabled. + * @param window A writable {@link Timeline.Window}. + * @param period A writable {@link Timeline.Period}. + * @return A dummy media period id for the first-to-be-played period of the current timeline. + */ + public MediaPeriodId getDummyFirstMediaPeriodId( + boolean shuffleModeEnabled, Timeline.Window window, Timeline.Period period) { + if (timeline.isEmpty()) { + return DUMMY_MEDIA_PERIOD_ID; + } + int firstWindowIndex = timeline.getFirstWindowIndex(shuffleModeEnabled); + int firstPeriodIndex = timeline.getWindow(firstWindowIndex, window).firstPeriodIndex; + int currentPeriodIndex = timeline.getIndexOfPeriod(periodId.periodUid); + long windowSequenceNumber = C.INDEX_UNSET; + if (currentPeriodIndex != C.INDEX_UNSET) { + int currentWindowIndex = timeline.getPeriod(currentPeriodIndex, period).windowIndex; + if (firstWindowIndex == currentWindowIndex) { + // Keep window sequence number if the new position is still in the same window. + windowSequenceNumber = periodId.windowSequenceNumber; + } + } + return new MediaPeriodId(timeline.getUidOfPeriod(firstPeriodIndex), windowSequenceNumber); + } + + /** + * Copies playback info with new playing position. + * + * @param periodId New playing media period. See {@link #periodId}. + * @param positionUs New position. See {@link #positionUs}. + * @param contentPositionUs New content position. See {@link #contentPositionUs}. Value is ignored + * if {@code periodId.isAd()} is true. + * @param totalBufferedDurationUs New buffered duration. See {@link #totalBufferedDurationUs}. + * @return Copied playback info with new playing position. + */ + @CheckResult + public PlaybackInfo copyWithNewPosition( + MediaPeriodId periodId, + long positionUs, + long contentPositionUs, + long totalBufferedDurationUs) { + return new PlaybackInfo( + timeline, + periodId, + positionUs, + periodId.isAd() ? contentPositionUs : C.TIME_UNSET, + playbackState, + playbackError, + isLoading, + trackGroups, + trackSelectorResult, + loadingMediaPeriodId, + bufferedPositionUs, + totalBufferedDurationUs, + positionUs); + } + + /** + * Copies playback info with the new timeline. + * + * @param timeline New timeline. See {@link #timeline}. + * @return Copied playback info with the new timeline. + */ + @CheckResult + public PlaybackInfo copyWithTimeline(Timeline timeline) { + return new PlaybackInfo( + timeline, + periodId, + startPositionUs, + contentPositionUs, + playbackState, + playbackError, + isLoading, + trackGroups, + trackSelectorResult, + loadingMediaPeriodId, + bufferedPositionUs, + totalBufferedDurationUs, + positionUs); + } + + /** + * Copies playback info with new playback state. + * + * @param playbackState New playback state. See {@link #playbackState}. + * @return Copied playback info with new playback state. + */ + @CheckResult + public PlaybackInfo copyWithPlaybackState(int playbackState) { + return new PlaybackInfo( + timeline, + periodId, + startPositionUs, + contentPositionUs, + playbackState, + playbackError, + isLoading, + trackGroups, + trackSelectorResult, + loadingMediaPeriodId, + bufferedPositionUs, + totalBufferedDurationUs, + positionUs); + } + + /** + * Copies playback info with a playback error. + * + * @param playbackError The error. See {@link #playbackError}. + * @return Copied playback info with the playback error. + */ + @CheckResult + public PlaybackInfo copyWithPlaybackError(@Nullable ExoPlaybackException playbackError) { + return new PlaybackInfo( + timeline, + periodId, + startPositionUs, + contentPositionUs, + playbackState, + playbackError, + isLoading, + trackGroups, + trackSelectorResult, + loadingMediaPeriodId, + bufferedPositionUs, + totalBufferedDurationUs, + positionUs); + } + + /** + * Copies playback info with new loading state. + * + * @param isLoading New loading state. See {@link #isLoading}. + * @return Copied playback info with new loading state. + */ + @CheckResult + public PlaybackInfo copyWithIsLoading(boolean isLoading) { + return new PlaybackInfo( + timeline, + periodId, + startPositionUs, + contentPositionUs, + playbackState, + playbackError, + isLoading, + trackGroups, + trackSelectorResult, + loadingMediaPeriodId, + bufferedPositionUs, + totalBufferedDurationUs, + positionUs); + } + + /** + * Copies playback info with new track information. + * + * @param trackGroups New track groups. See {@link #trackGroups}. + * @param trackSelectorResult New track selector result. See {@link #trackSelectorResult}. + * @return Copied playback info with new track information. + */ + @CheckResult + public PlaybackInfo copyWithTrackInfo( + TrackGroupArray trackGroups, TrackSelectorResult trackSelectorResult) { + return new PlaybackInfo( + timeline, + periodId, + startPositionUs, + contentPositionUs, + playbackState, + playbackError, + isLoading, + trackGroups, + trackSelectorResult, + loadingMediaPeriodId, + bufferedPositionUs, + totalBufferedDurationUs, + positionUs); + } + + /** + * Copies playback info with new loading media period. + * + * @param loadingMediaPeriodId New loading media period id. See {@link #loadingMediaPeriodId}. + * @return Copied playback info with new loading media period. + */ + @CheckResult + public PlaybackInfo copyWithLoadingMediaPeriodId(MediaPeriodId loadingMediaPeriodId) { + return new PlaybackInfo( + timeline, + periodId, + startPositionUs, + contentPositionUs, + playbackState, + playbackError, + isLoading, + trackGroups, + trackSelectorResult, + loadingMediaPeriodId, + bufferedPositionUs, + totalBufferedDurationUs, + positionUs); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackParameters.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackParameters.java new file mode 100644 index 0000000000..fd47117aba --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackParameters.java @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * The parameters that apply to playback. + */ +public final class PlaybackParameters { + + /** + * The default playback parameters: real-time playback with no pitch modification or silence + * skipping. + */ + public static final PlaybackParameters DEFAULT = new PlaybackParameters(/* speed= */ 1f); + + /** The factor by which playback will be sped up. */ + public final float speed; + + /** The factor by which the audio pitch will be scaled. */ + public final float pitch; + + /** Whether to skip silence in the input. */ + public final boolean skipSilence; + + private final int scaledUsPerMs; + + /** + * Creates new playback parameters that set the playback speed. + * + * @param speed The factor by which playback will be sped up. Must be greater than zero. + */ + public PlaybackParameters(float speed) { + this(speed, /* pitch= */ 1f, /* skipSilence= */ false); + } + + /** + * Creates new playback parameters that set the playback speed and audio pitch scaling factor. + * + * @param speed The factor by which playback will be sped up. Must be greater than zero. + * @param pitch The factor by which the audio pitch will be scaled. Must be greater than zero. + */ + public PlaybackParameters(float speed, float pitch) { + this(speed, pitch, /* skipSilence= */ false); + } + + /** + * Creates new playback parameters that set the playback speed, audio pitch scaling factor and + * whether to skip silence in the audio stream. + * + * @param speed The factor by which playback will be sped up. Must be greater than zero. + * @param pitch The factor by which the audio pitch will be scaled. Must be greater than zero. + * @param skipSilence Whether to skip silences in the audio stream. + */ + public PlaybackParameters(float speed, float pitch, boolean skipSilence) { + Assertions.checkArgument(speed > 0); + Assertions.checkArgument(pitch > 0); + this.speed = speed; + this.pitch = pitch; + this.skipSilence = skipSilence; + scaledUsPerMs = Math.round(speed * 1000f); + } + + /** + * Returns the media time in microseconds that will elapse in {@code timeMs} milliseconds of + * wallclock time. + * + * @param timeMs The time to scale, in milliseconds. + * @return The scaled time, in microseconds. + */ + public long getMediaTimeUsForPlayoutTimeMs(long timeMs) { + return timeMs * scaledUsPerMs; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + PlaybackParameters other = (PlaybackParameters) obj; + return this.speed == other.speed + && this.pitch == other.pitch + && this.skipSilence == other.skipSilence; + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + Float.floatToRawIntBits(speed); + result = 31 * result + Float.floatToRawIntBits(pitch); + result = 31 * result + (skipSilence ? 1 : 0); + return result; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackPreparer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackPreparer.java new file mode 100644 index 0000000000..831a28aa47 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlaybackPreparer.java @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +/** Called to prepare a playback. */ +public interface PlaybackPreparer { + + /** Called to prepare a playback. */ + void preparePlayback(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Player.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Player.java new file mode 100644 index 0000000000..89059dc2ea --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Player.java @@ -0,0 +1,1040 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.os.Looper; +import android.view.Surface; +import android.view.SurfaceHolder; +import android.view.SurfaceView; +import android.view.TextureView; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C.VideoScalingMode; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AuxEffectInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.TextOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoDecoderOutputBufferRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoFrameMetadataListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical.CameraMotionListener; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * A media player interface defining traditional high-level functionality, such as the ability to + * play, pause, seek and query properties of the currently playing media. + *

+ * Some important properties of media players that implement this interface are: + *

+ */ +public interface Player { + + /** The audio component of a {@link Player}. */ + interface AudioComponent { + + /** + * Adds a listener to receive audio events. + * + * @param listener The listener to register. + */ + void addAudioListener(AudioListener listener); + + /** + * Removes a listener of audio events. + * + * @param listener The listener to unregister. + */ + void removeAudioListener(AudioListener listener); + + /** + * Sets the attributes for audio playback, used by the underlying audio track. If not set, the + * default audio attributes will be used. They are suitable for general media playback. + * + *

Setting the audio attributes during playback may introduce a short gap in audio output as + * the audio track is recreated. A new audio session id will also be generated. + * + *

If tunneling is enabled by the track selector, the specified audio attributes will be + * ignored, but they will take effect if audio is later played without tunneling. + * + *

If the device is running a build before platform API version 21, audio attributes cannot + * be set directly on the underlying audio track. In this case, the usage will be mapped onto an + * equivalent stream type using {@link Util#getStreamTypeForAudioUsage(int)}. + * + * @param audioAttributes The attributes to use for audio playback. + * @deprecated Use {@link AudioComponent#setAudioAttributes(AudioAttributes, boolean)}. + */ + @Deprecated + void setAudioAttributes(AudioAttributes audioAttributes); + + /** + * Sets the attributes for audio playback, used by the underlying audio track. If not set, the + * default audio attributes will be used. They are suitable for general media playback. + * + *

Setting the audio attributes during playback may introduce a short gap in audio output as + * the audio track is recreated. A new audio session id will also be generated. + * + *

If tunneling is enabled by the track selector, the specified audio attributes will be + * ignored, but they will take effect if audio is later played without tunneling. + * + *

If the device is running a build before platform API version 21, audio attributes cannot + * be set directly on the underlying audio track. In this case, the usage will be mapped onto an + * equivalent stream type using {@link Util#getStreamTypeForAudioUsage(int)}. + * + *

If audio focus should be handled, the {@link AudioAttributes#usage} must be {@link + * C#USAGE_MEDIA} or {@link C#USAGE_GAME}. Other usages will throw an {@link + * IllegalArgumentException}. + * + * @param audioAttributes The attributes to use for audio playback. + * @param handleAudioFocus True if the player should handle audio focus, false otherwise. + */ + void setAudioAttributes(AudioAttributes audioAttributes, boolean handleAudioFocus); + + /** Returns the attributes for audio playback. */ + AudioAttributes getAudioAttributes(); + + /** Returns the audio session identifier, or {@link C#AUDIO_SESSION_ID_UNSET} if not set. */ + int getAudioSessionId(); + + /** Sets information on an auxiliary audio effect to attach to the underlying audio track. */ + void setAuxEffectInfo(AuxEffectInfo auxEffectInfo); + + /** Detaches any previously attached auxiliary audio effect from the underlying audio track. */ + void clearAuxEffectInfo(); + + /** + * Sets the audio volume, with 0 being silence and 1 being unity gain. + * + * @param audioVolume The audio volume. + */ + void setVolume(float audioVolume); + + /** Returns the audio volume, with 0 being silence and 1 being unity gain. */ + float getVolume(); + } + + /** The video component of a {@link Player}. */ + interface VideoComponent { + + /** + * Sets the {@link VideoScalingMode}. + * + * @param videoScalingMode The {@link VideoScalingMode}. + */ + void setVideoScalingMode(@VideoScalingMode int videoScalingMode); + + /** Returns the {@link VideoScalingMode}. */ + @VideoScalingMode + int getVideoScalingMode(); + + /** + * Adds a listener to receive video events. + * + * @param listener The listener to register. + */ + void addVideoListener(VideoListener listener); + + /** + * Removes a listener of video events. + * + * @param listener The listener to unregister. + */ + void removeVideoListener(VideoListener listener); + + /** + * Sets a listener to receive video frame metadata events. + * + *

This method is intended to be called by the same component that sets the {@link Surface} + * onto which video will be rendered. If using ExoPlayer's standard UI components, this method + * should not be called directly from application code. + * + * @param listener The listener. + */ + void setVideoFrameMetadataListener(VideoFrameMetadataListener listener); + + /** + * Clears the listener which receives video frame metadata events if it matches the one passed. + * Else does nothing. + * + * @param listener The listener to clear. + */ + void clearVideoFrameMetadataListener(VideoFrameMetadataListener listener); + + /** + * Sets a listener of camera motion events. + * + * @param listener The listener. + */ + void setCameraMotionListener(CameraMotionListener listener); + + /** + * Clears the listener which receives camera motion events if it matches the one passed. Else + * does nothing. + * + * @param listener The listener to clear. + */ + void clearCameraMotionListener(CameraMotionListener listener); + + /** + * Clears any {@link Surface}, {@link SurfaceHolder}, {@link SurfaceView} or {@link TextureView} + * currently set on the player. + */ + void clearVideoSurface(); + + /** + * Clears the {@link Surface} onto which video is being rendered if it matches the one passed. + * Else does nothing. + * + * @param surface The surface to clear. + */ + void clearVideoSurface(@Nullable Surface surface); + + /** + * Sets the {@link Surface} onto which video will be rendered. The caller is responsible for + * tracking the lifecycle of the surface, and must clear the surface by calling {@code + * setVideoSurface(null)} if the surface is destroyed. + * + *

If the surface is held by a {@link SurfaceView}, {@link TextureView} or {@link + * SurfaceHolder} then it's recommended to use {@link #setVideoSurfaceView(SurfaceView)}, {@link + * #setVideoTextureView(TextureView)} or {@link #setVideoSurfaceHolder(SurfaceHolder)} rather + * than this method, since passing the holder allows the player to track the lifecycle of the + * surface automatically. + * + * @param surface The {@link Surface}. + */ + void setVideoSurface(@Nullable Surface surface); + + /** + * Sets the {@link SurfaceHolder} that holds the {@link Surface} onto which video will be + * rendered. The player will track the lifecycle of the surface automatically. + * + * @param surfaceHolder The surface holder. + */ + void setVideoSurfaceHolder(@Nullable SurfaceHolder surfaceHolder); + + /** + * Clears the {@link SurfaceHolder} that holds the {@link Surface} onto which video is being + * rendered if it matches the one passed. Else does nothing. + * + * @param surfaceHolder The surface holder to clear. + */ + void clearVideoSurfaceHolder(@Nullable SurfaceHolder surfaceHolder); + + /** + * Sets the {@link SurfaceView} onto which video will be rendered. The player will track the + * lifecycle of the surface automatically. + * + * @param surfaceView The surface view. + */ + void setVideoSurfaceView(@Nullable SurfaceView surfaceView); + + /** + * Clears the {@link SurfaceView} onto which video is being rendered if it matches the one + * passed. Else does nothing. + * + * @param surfaceView The texture view to clear. + */ + void clearVideoSurfaceView(@Nullable SurfaceView surfaceView); + + /** + * Sets the {@link TextureView} onto which video will be rendered. The player will track the + * lifecycle of the surface automatically. + * + * @param textureView The texture view. + */ + void setVideoTextureView(@Nullable TextureView textureView); + + /** + * Clears the {@link TextureView} onto which video is being rendered if it matches the one + * passed. Else does nothing. + * + * @param textureView The texture view to clear. + */ + void clearVideoTextureView(@Nullable TextureView textureView); + + /** + * Sets the video decoder output buffer renderer. This is intended for use only with extension + * renderers that accept {@link C#MSG_SET_VIDEO_DECODER_OUTPUT_BUFFER_RENDERER}. For most use + * cases, an output surface or view should be passed via {@link #setVideoSurface(Surface)} or + * {@link #setVideoSurfaceView(SurfaceView)} instead. + * + * @param videoDecoderOutputBufferRenderer The video decoder output buffer renderer, or {@code + * null} to clear the output buffer renderer. + */ + void setVideoDecoderOutputBufferRenderer( + @Nullable VideoDecoderOutputBufferRenderer videoDecoderOutputBufferRenderer); + + /** Clears the video decoder output buffer renderer. */ + void clearVideoDecoderOutputBufferRenderer(); + + /** + * Clears the video decoder output buffer renderer if it matches the one passed. Else does + * nothing. + * + * @param videoDecoderOutputBufferRenderer The video decoder output buffer renderer to clear. + */ + void clearVideoDecoderOutputBufferRenderer( + @Nullable VideoDecoderOutputBufferRenderer videoDecoderOutputBufferRenderer); + } + + /** The text component of a {@link Player}. */ + interface TextComponent { + + /** + * Registers an output to receive text events. + * + * @param listener The output to register. + */ + void addTextOutput(TextOutput listener); + + /** + * Removes a text output. + * + * @param listener The output to remove. + */ + void removeTextOutput(TextOutput listener); + } + + /** The metadata component of a {@link Player}. */ + interface MetadataComponent { + + /** + * Adds a {@link MetadataOutput} to receive metadata. + * + * @param output The output to register. + */ + void addMetadataOutput(MetadataOutput output); + + /** + * Removes a {@link MetadataOutput}. + * + * @param output The output to remove. + */ + void removeMetadataOutput(MetadataOutput output); + } + + /** + * Listener of changes in player state. All methods have no-op default implementations to allow + * selective overrides. + */ + interface EventListener { + + /** + * Called when the timeline has been refreshed. + * + *

Note that if the timeline has changed then a position discontinuity may also have + * occurred. For example, the current period index may have changed as a result of periods being + * added or removed from the timeline. This will not be reported via a separate call to + * {@link #onPositionDiscontinuity(int)}. + * + * @param timeline The latest timeline. Never null, but may be empty. + * @param reason The {@link TimelineChangeReason} responsible for this timeline change. + */ + @SuppressWarnings("deprecation") + default void onTimelineChanged(Timeline timeline, @TimelineChangeReason int reason) { + Object manifest = null; + if (timeline.getWindowCount() == 1) { + // Legacy behavior was to report the manifest for single window timelines only. + Timeline.Window window = new Timeline.Window(); + manifest = timeline.getWindow(0, window).manifest; + } + // Call deprecated version. + onTimelineChanged(timeline, manifest, reason); + } + + /** + * Called when the timeline and/or manifest has been refreshed. + * + *

Note that if the timeline has changed then a position discontinuity may also have + * occurred. For example, the current period index may have changed as a result of periods being + * added or removed from the timeline. This will not be reported via a separate call to + * {@link #onPositionDiscontinuity(int)}. + * + * @param timeline The latest timeline. Never null, but may be empty. + * @param manifest The latest manifest. May be null. + * @param reason The {@link TimelineChangeReason} responsible for this timeline change. + * @deprecated Use {@link #onTimelineChanged(Timeline, int)} instead. The manifest can be + * accessed by using {@link #getCurrentManifest()} or {@code timeline.getWindow(windowIndex, + * window).manifest} for a given window index. + */ + @Deprecated + default void onTimelineChanged( + Timeline timeline, @Nullable Object manifest, @TimelineChangeReason int reason) {} + + /** + * Called when the available or selected tracks change. + * + * @param trackGroups The available tracks. Never null, but may be of length zero. + * @param trackSelections The track selections for each renderer. Never null and always of + * length {@link #getRendererCount()}, but may contain null elements. + */ + default void onTracksChanged( + TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {} + + /** + * Called when the player starts or stops loading the source. + * + * @param isLoading Whether the source is currently being loaded. + */ + default void onLoadingChanged(boolean isLoading) {} + + /** + * Called when the value returned from either {@link #getPlayWhenReady()} or {@link + * #getPlaybackState()} changes. + * + * @param playWhenReady Whether playback will proceed when ready. + * @param playbackState The new {@link State playback state}. + */ + default void onPlayerStateChanged(boolean playWhenReady, @State int playbackState) {} + + /** + * Called when the value returned from {@link #getPlaybackSuppressionReason()} changes. + * + * @param playbackSuppressionReason The current {@link PlaybackSuppressionReason}. + */ + default void onPlaybackSuppressionReasonChanged( + @PlaybackSuppressionReason int playbackSuppressionReason) {} + + /** + * Called when the value of {@link #isPlaying()} changes. + * + * @param isPlaying Whether the player is playing. + */ + default void onIsPlayingChanged(boolean isPlaying) {} + + /** + * Called when the value of {@link #getRepeatMode()} changes. + * + * @param repeatMode The {@link RepeatMode} used for playback. + */ + default void onRepeatModeChanged(@RepeatMode int repeatMode) {} + + /** + * Called when the value of {@link #getShuffleModeEnabled()} changes. + * + * @param shuffleModeEnabled Whether shuffling of windows is enabled. + */ + default void onShuffleModeEnabledChanged(boolean shuffleModeEnabled) {} + + /** + * Called when an error occurs. The playback state will transition to {@link #STATE_IDLE} + * immediately after this method is called. The player instance can still be used, and {@link + * #release()} must still be called on the player should it no longer be required. + * + * @param error The error. + */ + default void onPlayerError(ExoPlaybackException error) {} + + /** + * Called when a position discontinuity occurs without a change to the timeline. A position + * discontinuity occurs when the current window or period index changes (as a result of playback + * transitioning from one period in the timeline to the next), or when the playback position + * jumps within the period currently being played (as a result of a seek being performed, or + * when the source introduces a discontinuity internally). + * + *

When a position discontinuity occurs as a result of a change to the timeline this method + * is not called. {@link #onTimelineChanged(Timeline, int)} is called in this case. + * + * @param reason The {@link DiscontinuityReason} responsible for the discontinuity. + */ + default void onPositionDiscontinuity(@DiscontinuityReason int reason) {} + + /** + * Called when the current playback parameters change. The playback parameters may change due to + * a call to {@link #setPlaybackParameters(PlaybackParameters)}, or the player itself may change + * them (for example, if audio playback switches to passthrough mode, where speed adjustment is + * no longer possible). + * + * @param playbackParameters The playback parameters. + */ + default void onPlaybackParametersChanged(PlaybackParameters playbackParameters) {} + + /** + * Called when all pending seek requests have been processed by the player. This is guaranteed + * to happen after any necessary changes to the player state were reported to {@link + * #onPlayerStateChanged(boolean, int)}. + */ + default void onSeekProcessed() {} + } + + /** + * @deprecated Use {@link EventListener} interface directly for selective overrides as all methods + * are implemented as no-op default methods. + */ + @Deprecated + abstract class DefaultEventListener implements EventListener { + + @Override + public void onTimelineChanged(Timeline timeline, @TimelineChangeReason int reason) { + Object manifest = null; + if (timeline.getWindowCount() == 1) { + // Legacy behavior was to report the manifest for single window timelines only. + Timeline.Window window = new Timeline.Window(); + manifest = timeline.getWindow(0, window).manifest; + } + // Call deprecated version. + onTimelineChanged(timeline, manifest, reason); + } + + @Override + @SuppressWarnings("deprecation") + public void onTimelineChanged( + Timeline timeline, @Nullable Object manifest, @TimelineChangeReason int reason) { + // Call deprecated version. Otherwise, do nothing. + onTimelineChanged(timeline, manifest); + } + + /** @deprecated Use {@link EventListener#onTimelineChanged(Timeline, int)} instead. */ + @Deprecated + public void onTimelineChanged(Timeline timeline, @Nullable Object manifest) { + // Do nothing. + } + } + + /** + * Playback state. One of {@link #STATE_IDLE}, {@link #STATE_BUFFERING}, {@link #STATE_READY} or + * {@link #STATE_ENDED}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({STATE_IDLE, STATE_BUFFERING, STATE_READY, STATE_ENDED}) + @interface State {} + /** + * The player does not have any media to play. + */ + int STATE_IDLE = 1; + /** + * The player is not able to immediately play from its current position. This state typically + * occurs when more data needs to be loaded. + */ + int STATE_BUFFERING = 2; + /** + * The player is able to immediately play from its current position. The player will be playing if + * {@link #getPlayWhenReady()} is true, and paused otherwise. + */ + int STATE_READY = 3; + /** + * The player has finished playing the media. + */ + int STATE_ENDED = 4; + + /** + * Reason why playback is suppressed even though {@link #getPlayWhenReady()} is {@code true}. One + * of {@link #PLAYBACK_SUPPRESSION_REASON_NONE} or {@link + * #PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + PLAYBACK_SUPPRESSION_REASON_NONE, + PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS + }) + @interface PlaybackSuppressionReason {} + /** Playback is not suppressed. */ + int PLAYBACK_SUPPRESSION_REASON_NONE = 0; + /** Playback is suppressed due to transient audio focus loss. */ + int PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS = 1; + + /** + * Repeat modes for playback. One of {@link #REPEAT_MODE_OFF}, {@link #REPEAT_MODE_ONE} or {@link + * #REPEAT_MODE_ALL}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({REPEAT_MODE_OFF, REPEAT_MODE_ONE, REPEAT_MODE_ALL}) + @interface RepeatMode {} + /** + * Normal playback without repetition. + */ + int REPEAT_MODE_OFF = 0; + /** + * "Repeat One" mode to repeat the currently playing window infinitely. + */ + int REPEAT_MODE_ONE = 1; + /** + * "Repeat All" mode to repeat the entire timeline infinitely. + */ + int REPEAT_MODE_ALL = 2; + + /** + * Reasons for position discontinuities. One of {@link #DISCONTINUITY_REASON_PERIOD_TRANSITION}, + * {@link #DISCONTINUITY_REASON_SEEK}, {@link #DISCONTINUITY_REASON_SEEK_ADJUSTMENT}, {@link + * #DISCONTINUITY_REASON_AD_INSERTION} or {@link #DISCONTINUITY_REASON_INTERNAL}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + DISCONTINUITY_REASON_PERIOD_TRANSITION, + DISCONTINUITY_REASON_SEEK, + DISCONTINUITY_REASON_SEEK_ADJUSTMENT, + DISCONTINUITY_REASON_AD_INSERTION, + DISCONTINUITY_REASON_INTERNAL + }) + @interface DiscontinuityReason {} + /** + * Automatic playback transition from one period in the timeline to the next. The period index may + * be the same as it was before the discontinuity in case the current period is repeated. + */ + int DISCONTINUITY_REASON_PERIOD_TRANSITION = 0; + /** Seek within the current period or to another period. */ + int DISCONTINUITY_REASON_SEEK = 1; + /** + * Seek adjustment due to being unable to seek to the requested position or because the seek was + * permitted to be inexact. + */ + int DISCONTINUITY_REASON_SEEK_ADJUSTMENT = 2; + /** Discontinuity to or from an ad within one period in the timeline. */ + int DISCONTINUITY_REASON_AD_INSERTION = 3; + /** Discontinuity introduced internally by the source. */ + int DISCONTINUITY_REASON_INTERNAL = 4; + + /** + * Reasons for timeline changes. One of {@link #TIMELINE_CHANGE_REASON_PREPARED}, {@link + * #TIMELINE_CHANGE_REASON_RESET} or {@link #TIMELINE_CHANGE_REASON_DYNAMIC}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + TIMELINE_CHANGE_REASON_PREPARED, + TIMELINE_CHANGE_REASON_RESET, + TIMELINE_CHANGE_REASON_DYNAMIC + }) + @interface TimelineChangeReason {} + /** Timeline and manifest changed as a result of a player initialization with new media. */ + int TIMELINE_CHANGE_REASON_PREPARED = 0; + /** Timeline and manifest changed as a result of a player reset. */ + int TIMELINE_CHANGE_REASON_RESET = 1; + /** + * Timeline or manifest changed as a result of an dynamic update introduced by the played media. + */ + int TIMELINE_CHANGE_REASON_DYNAMIC = 2; + + /** Returns the component of this player for audio output, or null if audio is not supported. */ + @Nullable + AudioComponent getAudioComponent(); + + /** Returns the component of this player for video output, or null if video is not supported. */ + @Nullable + VideoComponent getVideoComponent(); + + /** Returns the component of this player for text output, or null if text is not supported. */ + @Nullable + TextComponent getTextComponent(); + + /** + * Returns the component of this player for metadata output, or null if metadata is not supported. + */ + @Nullable + MetadataComponent getMetadataComponent(); + + /** + * Returns the {@link Looper} associated with the application thread that's used to access the + * player and on which player events are received. + */ + Looper getApplicationLooper(); + + /** + * Register a listener to receive events from the player. The listener's methods will be called on + * the thread that was used to construct the player. However, if the thread used to construct the + * player does not have a {@link Looper}, then the listener will be called on the main thread. + * + * @param listener The listener to register. + */ + void addListener(EventListener listener); + + /** + * Unregister a listener. The listener will no longer receive events from the player. + * + * @param listener The listener to unregister. + */ + void removeListener(EventListener listener); + + /** + * Returns the current {@link State playback state} of the player. + * + * @return The current {@link State playback state}. + */ + @State + int getPlaybackState(); + + /** + * Returns the reason why playback is suppressed even though {@link #getPlayWhenReady()} is {@code + * true}, or {@link #PLAYBACK_SUPPRESSION_REASON_NONE} if playback is not suppressed. + * + * @return The current {@link PlaybackSuppressionReason playback suppression reason}. + */ + @PlaybackSuppressionReason + int getPlaybackSuppressionReason(); + + /** + * Returns whether the player is playing, i.e. {@link #getContentPosition()} is advancing. + * + *

If {@code false}, then at least one of the following is true: + * + *

+ * + * @return Whether the player is playing. + */ + boolean isPlaying(); + + /** + * Returns the error that caused playback to fail. This is the same error that will have been + * reported via {@link Player.EventListener#onPlayerError(ExoPlaybackException)} at the time of + * failure. It can be queried using this method until {@code stop(true)} is called or the player + * is re-prepared. + * + *

Note that this method will always return {@code null} if {@link #getPlaybackState()} is not + * {@link #STATE_IDLE}. + * + * @return The error, or {@code null}. + */ + @Nullable + ExoPlaybackException getPlaybackError(); + + /** + * Sets whether playback should proceed when {@link #getPlaybackState()} == {@link #STATE_READY}. + *

+ * If the player is already in the ready state then this method can be used to pause and resume + * playback. + * + * @param playWhenReady Whether playback should proceed when ready. + */ + void setPlayWhenReady(boolean playWhenReady); + + /** + * Whether playback will proceed when {@link #getPlaybackState()} == {@link #STATE_READY}. + * + * @return Whether playback will proceed when ready. + */ + boolean getPlayWhenReady(); + + /** + * Sets the {@link RepeatMode} to be used for playback. + * + * @param repeatMode The repeat mode. + */ + void setRepeatMode(@RepeatMode int repeatMode); + + /** + * Returns the current {@link RepeatMode} used for playback. + * + * @return The current repeat mode. + */ + @RepeatMode int getRepeatMode(); + + /** + * Sets whether shuffling of windows is enabled. + * + * @param shuffleModeEnabled Whether shuffling is enabled. + */ + void setShuffleModeEnabled(boolean shuffleModeEnabled); + + /** + * Returns whether shuffling of windows is enabled. + */ + boolean getShuffleModeEnabled(); + + /** + * Whether the player is currently loading the source. + * + * @return Whether the player is currently loading the source. + */ + boolean isLoading(); + + /** + * Seeks to the default position associated with the current window. The position can depend on + * the type of media being played. For live streams it will typically be the live edge of the + * window. For other streams it will typically be the start of the window. + */ + void seekToDefaultPosition(); + + /** + * Seeks to the default position associated with the specified window. The position can depend on + * the type of media being played. For live streams it will typically be the live edge of the + * window. For other streams it will typically be the start of the window. + * + * @param windowIndex The index of the window whose associated default position should be seeked + * to. + */ + void seekToDefaultPosition(int windowIndex); + + /** + * Seeks to a position specified in milliseconds in the current window. + * + * @param positionMs The seek position in the current window, or {@link C#TIME_UNSET} to seek to + * the window's default position. + */ + void seekTo(long positionMs); + + /** + * Seeks to a position specified in milliseconds in the specified window. + * + * @param windowIndex The index of the window. + * @param positionMs The seek position in the specified window, or {@link C#TIME_UNSET} to seek to + * the window's default position. + * @throws IllegalSeekPositionException If the player has a non-empty timeline and the provided + * {@code windowIndex} is not within the bounds of the current timeline. + */ + void seekTo(int windowIndex, long positionMs); + + /** + * Returns whether a previous window exists, which may depend on the current repeat mode and + * whether shuffle mode is enabled. + */ + boolean hasPrevious(); + + /** + * Seeks to the default position of the previous window in the timeline, which may depend on the + * current repeat mode and whether shuffle mode is enabled. Does nothing if {@link #hasPrevious()} + * is {@code false}. + */ + void previous(); + + /** + * Returns whether a next window exists, which may depend on the current repeat mode and whether + * shuffle mode is enabled. + */ + boolean hasNext(); + + /** + * Seeks to the default position of the next window in the timeline, which may depend on the + * current repeat mode and whether shuffle mode is enabled. Does nothing if {@link #hasNext()} is + * {@code false}. + */ + void next(); + + /** + * Attempts to set the playback parameters. Passing {@code null} sets the parameters to the + * default, {@link PlaybackParameters#DEFAULT}, which means there is no speed or pitch adjustment. + * + *

Playback parameters changes may cause the player to buffer. {@link + * EventListener#onPlaybackParametersChanged(PlaybackParameters)} will be called whenever the + * currently active playback parameters change. + * + * @param playbackParameters The playback parameters, or {@code null} to use the defaults. + */ + void setPlaybackParameters(@Nullable PlaybackParameters playbackParameters); + + /** + * Returns the currently active playback parameters. + * + * @see EventListener#onPlaybackParametersChanged(PlaybackParameters) + */ + PlaybackParameters getPlaybackParameters(); + + /** + * Stops playback without resetting the player. Use {@code setPlayWhenReady(false)} rather than + * this method if the intention is to pause playback. + * + *

Calling this method will cause the playback state to transition to {@link #STATE_IDLE}. The + * player instance can still be used, and {@link #release()} must still be called on the player if + * it's no longer required. + * + *

Calling this method does not reset the playback position. + */ + void stop(); + + /** + * Stops playback and optionally resets the player. Use {@code setPlayWhenReady(false)} rather + * than this method if the intention is to pause playback. + * + *

Calling this method will cause the playback state to transition to {@link #STATE_IDLE}. The + * player instance can still be used, and {@link #release()} must still be called on the player if + * it's no longer required. + * + * @param reset Whether the player should be reset. + */ + void stop(boolean reset); + + /** + * Releases the player. This method must be called when the player is no longer required. The + * player must not be used after calling this method. + */ + void release(); + + /** + * Returns the number of renderers. + */ + int getRendererCount(); + + /** + * Returns the track type that the renderer at a given index handles. + * + * @see Renderer#getTrackType() + * @param index The index of the renderer. + * @return One of the {@code TRACK_TYPE_*} constants defined in {@link C}. + */ + int getRendererType(int index); + + /** + * Returns the available track groups. + */ + TrackGroupArray getCurrentTrackGroups(); + + /** + * Returns the current track selections for each renderer. + */ + TrackSelectionArray getCurrentTrackSelections(); + + /** + * Returns the current manifest. The type depends on the type of media being played. May be null. + */ + @Nullable Object getCurrentManifest(); + + /** + * Returns the current {@link Timeline}. Never null, but may be empty. + */ + Timeline getCurrentTimeline(); + + /** + * Returns the index of the period currently being played. + */ + int getCurrentPeriodIndex(); + + /** + * Returns the index of the window currently being played. + */ + int getCurrentWindowIndex(); + + /** + * Returns the index of the next timeline window to be played, which may depend on the current + * repeat mode and whether shuffle mode is enabled. Returns {@link C#INDEX_UNSET} if the window + * currently being played is the last window. + */ + int getNextWindowIndex(); + + /** + * Returns the index of the previous timeline window to be played, which may depend on the current + * repeat mode and whether shuffle mode is enabled. Returns {@link C#INDEX_UNSET} if the window + * currently being played is the first window. + */ + int getPreviousWindowIndex(); + + /** + * Returns the tag of the currently playing window in the timeline. May be null if no tag is set + * or the timeline is not yet available. + */ + @Nullable Object getCurrentTag(); + + /** + * Returns the duration of the current content window or ad in milliseconds, or {@link + * C#TIME_UNSET} if the duration is not known. + */ + long getDuration(); + + /** Returns the playback position in the current content window or ad, in milliseconds. */ + long getCurrentPosition(); + + /** + * Returns an estimate of the position in the current content window or ad up to which data is + * buffered, in milliseconds. + */ + long getBufferedPosition(); + + /** + * Returns an estimate of the percentage in the current content window or ad up to which data is + * buffered, or 0 if no estimate is available. + */ + int getBufferedPercentage(); + + /** + * Returns an estimate of the total buffered duration from the current position, in milliseconds. + * This includes pre-buffered data for subsequent ads and windows. + */ + long getTotalBufferedDuration(); + + /** + * Returns whether the current window is dynamic, or {@code false} if the {@link Timeline} is + * empty. + * + * @see Timeline.Window#isDynamic + */ + boolean isCurrentWindowDynamic(); + + /** + * Returns whether the current window is live, or {@code false} if the {@link Timeline} is empty. + * + * @see Timeline.Window#isLive + */ + boolean isCurrentWindowLive(); + + /** + * Returns whether the current window is seekable, or {@code false} if the {@link Timeline} is + * empty. + * + * @see Timeline.Window#isSeekable + */ + boolean isCurrentWindowSeekable(); + + /** + * Returns whether the player is currently playing an ad. + */ + boolean isPlayingAd(); + + /** + * If {@link #isPlayingAd()} returns true, returns the index of the ad group in the period + * currently being played. Returns {@link C#INDEX_UNSET} otherwise. + */ + int getCurrentAdGroupIndex(); + + /** + * If {@link #isPlayingAd()} returns true, returns the index of the ad in its ad group. Returns + * {@link C#INDEX_UNSET} otherwise. + */ + int getCurrentAdIndexInAdGroup(); + + /** + * If {@link #isPlayingAd()} returns {@code true}, returns the duration of the current content + * window in milliseconds, or {@link C#TIME_UNSET} if the duration is not known. If there is no ad + * playing, the returned duration is the same as that returned by {@link #getDuration()}. + */ + long getContentDuration(); + + /** + * If {@link #isPlayingAd()} returns {@code true}, returns the content position that will be + * played once all ads in the ad group have finished playing, in milliseconds. If there is no ad + * playing, the returned position is the same as that returned by {@link #getCurrentPosition()}. + */ + long getContentPosition(); + + /** + * If {@link #isPlayingAd()} returns {@code true}, returns an estimate of the content position in + * the current content window up to which data is buffered, in milliseconds. If there is no ad + * playing, the returned position is the same as that returned by {@link #getBufferedPosition()}. + */ + long getContentBufferedPosition(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlayerMessage.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlayerMessage.java new file mode 100644 index 0000000000..69740220e5 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/PlayerMessage.java @@ -0,0 +1,301 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.os.Handler; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * Defines a player message which can be sent with a {@link Sender} and received by a {@link + * Target}. + */ +public final class PlayerMessage { + + /** A target for messages. */ + public interface Target { + + /** + * Handles a message delivered to the target. + * + * @param messageType The message type. + * @param payload The message payload. + * @throws ExoPlaybackException If an error occurred whilst handling the message. Should only be + * thrown by targets that handle messages on the playback thread. + */ + void handleMessage(int messageType, @Nullable Object payload) throws ExoPlaybackException; + } + + /** A sender for messages. */ + public interface Sender { + + /** + * Sends a message. + * + * @param message The message to be sent. + */ + void sendMessage(PlayerMessage message); + } + + private final Target target; + private final Sender sender; + private final Timeline timeline; + + private int type; + @Nullable private Object payload; + private Handler handler; + private int windowIndex; + private long positionMs; + private boolean deleteAfterDelivery; + private boolean isSent; + private boolean isDelivered; + private boolean isProcessed; + private boolean isCanceled; + + /** + * Creates a new message. + * + * @param sender The {@link Sender} used to send the message. + * @param target The {@link Target} the message is sent to. + * @param timeline The timeline used when setting the position with {@link #setPosition(long)}. If + * set to {@link Timeline#EMPTY}, any position can be specified. + * @param defaultWindowIndex The default window index in the {@code timeline} when no other window + * index is specified. + * @param defaultHandler The default handler to send the message on when no other handler is + * specified. + */ + public PlayerMessage( + Sender sender, + Target target, + Timeline timeline, + int defaultWindowIndex, + Handler defaultHandler) { + this.sender = sender; + this.target = target; + this.timeline = timeline; + this.handler = defaultHandler; + this.windowIndex = defaultWindowIndex; + this.positionMs = C.TIME_UNSET; + this.deleteAfterDelivery = true; + } + + /** Returns the timeline used for setting the position with {@link #setPosition(long)}. */ + public Timeline getTimeline() { + return timeline; + } + + /** Returns the target the message is sent to. */ + public Target getTarget() { + return target; + } + + /** + * Sets the message type forwarded to {@link Target#handleMessage(int, Object)}. + * + * @param messageType The message type. + * @return This message. + * @throws IllegalStateException If {@link #send()} has already been called. + */ + public PlayerMessage setType(int messageType) { + Assertions.checkState(!isSent); + this.type = messageType; + return this; + } + + /** Returns the message type forwarded to {@link Target#handleMessage(int, Object)}. */ + public int getType() { + return type; + } + + /** + * Sets the message payload forwarded to {@link Target#handleMessage(int, Object)}. + * + * @param payload The message payload. + * @return This message. + * @throws IllegalStateException If {@link #send()} has already been called. + */ + public PlayerMessage setPayload(@Nullable Object payload) { + Assertions.checkState(!isSent); + this.payload = payload; + return this; + } + + /** Returns the message payload forwarded to {@link Target#handleMessage(int, Object)}. */ + @Nullable + public Object getPayload() { + return payload; + } + + /** + * Sets the handler the message is delivered on. + * + * @param handler A {@link Handler}. + * @return This message. + * @throws IllegalStateException If {@link #send()} has already been called. + */ + public PlayerMessage setHandler(Handler handler) { + Assertions.checkState(!isSent); + this.handler = handler; + return this; + } + + /** Returns the handler the message is delivered on. */ + public Handler getHandler() { + return handler; + } + + /** + * Returns position in window at {@link #getWindowIndex()} at which the message will be delivered, + * in milliseconds. If {@link C#TIME_UNSET}, the message will be delivered immediately. + */ + public long getPositionMs() { + return positionMs; + } + + /** + * Sets a position in the current window at which the message will be delivered. + * + * @param positionMs The position in the current window at which the message will be sent, in + * milliseconds. + * @return This message. + * @throws IllegalStateException If {@link #send()} has already been called. + */ + public PlayerMessage setPosition(long positionMs) { + Assertions.checkState(!isSent); + this.positionMs = positionMs; + return this; + } + + /** + * Sets a position in a window at which the message will be delivered. + * + * @param windowIndex The index of the window at which the message will be sent. + * @param positionMs The position in the window with index {@code windowIndex} at which the + * message will be sent, in milliseconds. + * @return This message. + * @throws IllegalSeekPositionException If the timeline returned by {@link #getTimeline()} is not + * empty and the provided window index is not within the bounds of the timeline. + * @throws IllegalStateException If {@link #send()} has already been called. + */ + public PlayerMessage setPosition(int windowIndex, long positionMs) { + Assertions.checkState(!isSent); + Assertions.checkArgument(positionMs != C.TIME_UNSET); + if (windowIndex < 0 || (!timeline.isEmpty() && windowIndex >= timeline.getWindowCount())) { + throw new IllegalSeekPositionException(timeline, windowIndex, positionMs); + } + this.windowIndex = windowIndex; + this.positionMs = positionMs; + return this; + } + + /** Returns window index at which the message will be delivered. */ + public int getWindowIndex() { + return windowIndex; + } + + /** + * Sets whether the message will be deleted after delivery. If false, the message will be resent + * if playback reaches the specified position again. Only allowed to be false if a position is set + * with {@link #setPosition(long)}. + * + * @param deleteAfterDelivery Whether the message is deleted after delivery. + * @return This message. + * @throws IllegalStateException If {@link #send()} has already been called. + */ + public PlayerMessage setDeleteAfterDelivery(boolean deleteAfterDelivery) { + Assertions.checkState(!isSent); + this.deleteAfterDelivery = deleteAfterDelivery; + return this; + } + + /** Returns whether the message will be deleted after delivery. */ + public boolean getDeleteAfterDelivery() { + return deleteAfterDelivery; + } + + /** + * Sends the message. If the target throws an {@link ExoPlaybackException} then it is propagated + * out of the player as an error using {@link + * Player.EventListener#onPlayerError(ExoPlaybackException)}. + * + * @return This message. + * @throws IllegalStateException If this message has already been sent. + */ + public PlayerMessage send() { + Assertions.checkState(!isSent); + if (positionMs == C.TIME_UNSET) { + Assertions.checkArgument(deleteAfterDelivery); + } + isSent = true; + sender.sendMessage(this); + return this; + } + + /** + * Cancels the message delivery. + * + * @return This message. + * @throws IllegalStateException If this method is called before {@link #send()}. + */ + public synchronized PlayerMessage cancel() { + Assertions.checkState(isSent); + isCanceled = true; + markAsProcessed(/* isDelivered= */ false); + return this; + } + + /** Returns whether the message delivery has been canceled. */ + public synchronized boolean isCanceled() { + return isCanceled; + } + + /** + * Blocks until after the message has been delivered or the player is no longer able to deliver + * the message. + * + *

Note that this method can't be called if the current thread is the same thread used by the + * message handler set with {@link #setHandler(Handler)} as it would cause a deadlock. + * + * @return Whether the message was delivered successfully. + * @throws IllegalStateException If this method is called before {@link #send()}. + * @throws IllegalStateException If this method is called on the same thread used by the message + * handler set with {@link #setHandler(Handler)}. + * @throws InterruptedException If the current thread is interrupted while waiting for the message + * to be delivered. + */ + public synchronized boolean blockUntilDelivered() throws InterruptedException { + Assertions.checkState(isSent); + Assertions.checkState(handler.getLooper().getThread() != Thread.currentThread()); + while (!isProcessed) { + wait(); + } + return isDelivered; + } + + /** + * Marks the message as processed. Should only be called by a {@link Sender} and may be called + * multiple times. + * + * @param isDelivered Whether the message has been delivered to its target. The message is + * considered as being delivered when this method has been called with {@code isDelivered} set + * to true at least once. + */ + public synchronized void markAsProcessed(boolean isDelivered) { + this.isDelivered |= isDelivered; + isProcessed = true; + notifyAll(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Renderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Renderer.java new file mode 100644 index 0000000000..d06afb5d3c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Renderer.java @@ -0,0 +1,306 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MediaClock; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Renders media read from a {@link SampleStream}. + * + *

Internally, a renderer's lifecycle is managed by the owning {@link ExoPlayer}. The renderer is + * transitioned through various states as the overall playback state and enabled tracks change. The + * valid state transitions are shown below, annotated with the methods that are called during each + * transition. + * + *

Renderer state + * transitions + */ +public interface Renderer extends PlayerMessage.Target { + + /** + * The renderer states. One of {@link #STATE_DISABLED}, {@link #STATE_ENABLED} or {@link + * #STATE_STARTED}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({STATE_DISABLED, STATE_ENABLED, STATE_STARTED}) + @interface State {} + /** + * The renderer is disabled. A renderer in this state may hold resources that it requires for + * rendering (e.g. media decoders), for use if it's subsequently enabled. {@link #reset()} can be + * called to force the renderer to release these resources. + */ + int STATE_DISABLED = 0; + /** + * The renderer is enabled but not started. A renderer in this state may render media at the + * current position (e.g. an initial video frame), but the position will not advance. A renderer + * in this state will typically hold resources that it requires for rendering (e.g. media + * decoders). + */ + int STATE_ENABLED = 1; + /** + * The renderer is started. Calls to {@link #render(long, long)} will cause media to be rendered. + */ + int STATE_STARTED = 2; + + /** + * Returns the track type that the {@link Renderer} handles. For example, a video renderer will + * return {@link C#TRACK_TYPE_VIDEO}, an audio renderer will return {@link C#TRACK_TYPE_AUDIO}, a + * text renderer will return {@link C#TRACK_TYPE_TEXT}, and so on. + * + * @return One of the {@code TRACK_TYPE_*} constants defined in {@link C}. + */ + int getTrackType(); + + /** + * Returns the capabilities of the renderer. + * + * @return The capabilities of the renderer. + */ + RendererCapabilities getCapabilities(); + + /** + * Sets the index of this renderer within the player. + * + * @param index The renderer index. + */ + void setIndex(int index); + + /** + * If the renderer advances its own playback position then this method returns a corresponding + * {@link MediaClock}. If provided, the player will use the returned {@link MediaClock} as its + * source of time during playback. A player may have at most one renderer that returns a {@link + * MediaClock} from this method. + * + * @return The {@link MediaClock} tracking the playback position of the renderer, or null. + */ + @Nullable + MediaClock getMediaClock(); + + /** + * Returns the current state of the renderer. + * + * @return The current state. One of {@link #STATE_DISABLED}, {@link #STATE_ENABLED} and {@link + * #STATE_STARTED}. + */ + @State + int getState(); + + /** + * Enables the renderer to consume from the specified {@link SampleStream}. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_DISABLED}. + * + * @param configuration The renderer configuration. + * @param formats The enabled formats. + * @param stream The {@link SampleStream} from which the renderer should consume. + * @param positionUs The player's current position. + * @param joining Whether this renderer is being enabled to join an ongoing playback. + * @param offsetUs The offset to be added to timestamps of buffers read from {@code stream} + * before they are rendered. + * @throws ExoPlaybackException If an error occurs. + */ + void enable(RendererConfiguration configuration, Format[] formats, SampleStream stream, + long positionUs, boolean joining, long offsetUs) throws ExoPlaybackException; + + /** + * Starts the renderer, meaning that calls to {@link #render(long, long)} will cause media to be + * rendered. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}. + * + * @throws ExoPlaybackException If an error occurs. + */ + void start() throws ExoPlaybackException; + + /** + * Replaces the {@link SampleStream} from which samples will be consumed. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}, {@link #STATE_STARTED}. + * + * @param formats The enabled formats. + * @param stream The {@link SampleStream} from which the renderer should consume. + * @param offsetUs The offset to be added to timestamps of buffers read from {@code stream} before + * they are rendered. + * @throws ExoPlaybackException If an error occurs. + */ + void replaceStream(Format[] formats, SampleStream stream, long offsetUs) + throws ExoPlaybackException; + + /** Returns the {@link SampleStream} being consumed, or null if the renderer is disabled. */ + @Nullable + SampleStream getStream(); + + /** + * Returns whether the renderer has read the current {@link SampleStream} to the end. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}, {@link #STATE_STARTED}. + */ + boolean hasReadStreamToEnd(); + + /** + * Returns the playback position up to which the renderer has read samples from the current {@link + * SampleStream}, in microseconds, or {@link C#TIME_END_OF_SOURCE} if the renderer has read the + * current {@link SampleStream} to the end. + * + *

This method may be called when the renderer is in the following states: {@link + * #STATE_ENABLED}, {@link #STATE_STARTED}. + */ + long getReadingPositionUs(); + + /** + * Signals to the renderer that the current {@link SampleStream} will be the final one supplied + * before it is next disabled or reset. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}, {@link #STATE_STARTED}. + */ + void setCurrentStreamFinal(); + + /** + * Returns whether the current {@link SampleStream} will be the final one supplied before the + * renderer is next disabled or reset. + */ + boolean isCurrentStreamFinal(); + + /** + * Throws an error that's preventing the renderer from reading from its {@link SampleStream}. Does + * nothing if no such error exists. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}, {@link #STATE_STARTED}. + * + * @throws IOException An error that's preventing the renderer from making progress or buffering + * more data. + */ + void maybeThrowStreamError() throws IOException; + + /** + * Signals to the renderer that a position discontinuity has occurred. + *

+ * After a position discontinuity, the renderer's {@link SampleStream} is guaranteed to provide + * samples starting from a key frame. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}, {@link #STATE_STARTED}. + * + * @param positionUs The new playback position in microseconds. + * @throws ExoPlaybackException If an error occurs handling the reset. + */ + void resetPosition(long positionUs) throws ExoPlaybackException; + + /** + * Sets the operating rate of this renderer, where 1 is the default rate, 2 is twice the default + * rate, 0.5 is half the default rate and so on. The operating rate is a hint to the renderer of + * the speed at which playback will proceed, and may be used for resource planning. + * + *

The default implementation is a no-op. + * + * @param operatingRate The operating rate. + * @throws ExoPlaybackException If an error occurs handling the operating rate. + */ + default void setOperatingRate(float operatingRate) throws ExoPlaybackException {} + + /** + * Incrementally renders the {@link SampleStream}. + *

+ * If the renderer is in the {@link #STATE_ENABLED} state then each call to this method will do + * work toward being ready to render the {@link SampleStream} when the renderer is started. It may + * also render the very start of the media, for example the first frame of a video stream. If the + * renderer is in the {@link #STATE_STARTED} state then calls to this method will render the + * {@link SampleStream} in sync with the specified media positions. + *

+ * This method should return quickly, and should not block if the renderer is unable to make + * useful progress. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}, {@link #STATE_STARTED}. + * + * @param positionUs The current media time in microseconds, measured at the start of the + * current iteration of the rendering loop. + * @param elapsedRealtimeUs {@link android.os.SystemClock#elapsedRealtime()} in microseconds, + * measured at the start of the current iteration of the rendering loop. + * @throws ExoPlaybackException If an error occurs. + */ + void render(long positionUs, long elapsedRealtimeUs) throws ExoPlaybackException; + + /** + * Whether the renderer is able to immediately render media from the current position. + *

+ * If the renderer is in the {@link #STATE_STARTED} state then returning true indicates that the + * renderer has everything that it needs to continue playback. Returning false indicates that + * the player should pause until the renderer is ready. + *

+ * If the renderer is in the {@link #STATE_ENABLED} state then returning true indicates that the + * renderer is ready for playback to be started. Returning false indicates that it is not. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}, {@link #STATE_STARTED}. + * + * @return Whether the renderer is ready to render media. + */ + boolean isReady(); + + /** + * Whether the renderer is ready for the {@link ExoPlayer} instance to transition to + * {@link Player#STATE_ENDED}. The player will make this transition as soon as {@code true} is + * returned by all of its {@link Renderer}s. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}, {@link #STATE_STARTED}. + * + * @return Whether the renderer is ready for the player to transition to the ended state. + */ + boolean isEnded(); + + /** + * Stops the renderer, transitioning it to the {@link #STATE_ENABLED} state. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_STARTED}. + * + * @throws ExoPlaybackException If an error occurs. + */ + void stop() throws ExoPlaybackException; + + /** + * Disable the renderer, transitioning it to the {@link #STATE_DISABLED} state. + *

+ * This method may be called when the renderer is in the following states: + * {@link #STATE_ENABLED}. + */ + void disable(); + + /** + * Forces the renderer to give up any resources (e.g. media decoders) that it may be holding. If + * the renderer is not holding any resources, the call is a no-op. + * + *

This method may be called when the renderer is in the following states: {@link + * #STATE_DISABLED}. + */ + void reset(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RendererCapabilities.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RendererCapabilities.java new file mode 100644 index 0000000000..6f34afc7b8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RendererCapabilities.java @@ -0,0 +1,293 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.annotation.SuppressLint; +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Defines the capabilities of a {@link Renderer}. + */ +public interface RendererCapabilities { + + /** + * Level of renderer support for a format. One of {@link #FORMAT_HANDLED}, {@link + * #FORMAT_EXCEEDS_CAPABILITIES}, {@link #FORMAT_UNSUPPORTED_DRM}, {@link + * #FORMAT_UNSUPPORTED_SUBTYPE} or {@link #FORMAT_UNSUPPORTED_TYPE}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + FORMAT_HANDLED, + FORMAT_EXCEEDS_CAPABILITIES, + FORMAT_UNSUPPORTED_DRM, + FORMAT_UNSUPPORTED_SUBTYPE, + FORMAT_UNSUPPORTED_TYPE + }) + @interface FormatSupport {} + + /** A mask to apply to {@link Capabilities} to obtain the {@link FormatSupport} only. */ + int FORMAT_SUPPORT_MASK = 0b111; + /** + * The {@link Renderer} is capable of rendering the format. + */ + int FORMAT_HANDLED = 0b100; + /** + * The {@link Renderer} is capable of rendering formats with the same mime type, but the + * properties of the format exceed the renderer's capabilities. There is a chance the renderer + * will be able to play the format in practice because some renderers report their capabilities + * conservatively, but the expected outcome is that playback will fail. + *

+ * Example: The {@link Renderer} is capable of rendering H264 and the format's mime type is + * {@link MimeTypes#VIDEO_H264}, but the format's resolution exceeds the maximum limit supported + * by the underlying H264 decoder. + */ + int FORMAT_EXCEEDS_CAPABILITIES = 0b011; + /** + * The {@link Renderer} is capable of rendering formats with the same mime type, but is not + * capable of rendering the format because the format's drm protection is not supported. + *

+ * Example: The {@link Renderer} is capable of rendering H264 and the format's mime type is + * {@link MimeTypes#VIDEO_H264}, but the format indicates PlayReady drm protection where-as the + * renderer only supports Widevine. + */ + int FORMAT_UNSUPPORTED_DRM = 0b010; + /** + * The {@link Renderer} is a general purpose renderer for formats of the same top-level type, + * but is not capable of rendering the format or any other format with the same mime type because + * the sub-type is not supported. + *

+ * Example: The {@link Renderer} is a general purpose audio renderer and the format's + * mime type matches audio/[subtype], but there does not exist a suitable decoder for [subtype]. + */ + int FORMAT_UNSUPPORTED_SUBTYPE = 0b001; + /** + * The {@link Renderer} is not capable of rendering the format, either because it does not + * support the format's top-level type, or because it's a specialized renderer for a different + * mime type. + *

+ * Example: The {@link Renderer} is a general purpose video renderer, but the format has an + * audio mime type. + */ + int FORMAT_UNSUPPORTED_TYPE = 0b000; + + /** + * Level of renderer support for adaptive format switches. One of {@link #ADAPTIVE_SEAMLESS}, + * {@link #ADAPTIVE_NOT_SEAMLESS} or {@link #ADAPTIVE_NOT_SUPPORTED}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ADAPTIVE_SEAMLESS, ADAPTIVE_NOT_SEAMLESS, ADAPTIVE_NOT_SUPPORTED}) + @interface AdaptiveSupport {} + + /** A mask to apply to {@link Capabilities} to obtain the {@link AdaptiveSupport} only. */ + int ADAPTIVE_SUPPORT_MASK = 0b11000; + /** + * The {@link Renderer} can seamlessly adapt between formats. + */ + int ADAPTIVE_SEAMLESS = 0b10000; + /** + * The {@link Renderer} can adapt between formats, but may suffer a brief discontinuity + * (~50-100ms) when adaptation occurs. + */ + int ADAPTIVE_NOT_SEAMLESS = 0b01000; + /** + * The {@link Renderer} does not support adaptation between formats. + */ + int ADAPTIVE_NOT_SUPPORTED = 0b00000; + + /** + * Level of renderer support for tunneling. One of {@link #TUNNELING_SUPPORTED} or {@link + * #TUNNELING_NOT_SUPPORTED}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({TUNNELING_SUPPORTED, TUNNELING_NOT_SUPPORTED}) + @interface TunnelingSupport {} + + /** A mask to apply to {@link Capabilities} to obtain the {@link TunnelingSupport} only. */ + int TUNNELING_SUPPORT_MASK = 0b100000; + /** + * The {@link Renderer} supports tunneled output. + */ + int TUNNELING_SUPPORTED = 0b100000; + /** + * The {@link Renderer} does not support tunneled output. + */ + int TUNNELING_NOT_SUPPORTED = 0b000000; + + /** + * Combined renderer capabilities. + * + *

This is a bitwise OR of {@link FormatSupport}, {@link AdaptiveSupport} and {@link + * TunnelingSupport}. Use {@link #getFormatSupport(int)}, {@link #getAdaptiveSupport(int)} or + * {@link #getTunnelingSupport(int)} to obtain the individual flags. And use {@link #create(int)} + * or {@link #create(int, int, int)} to create the combined capabilities. + * + *

Possible values: + * + *

+ */ + @Documented + @Retention(RetentionPolicy.SOURCE) + // Intentionally empty to prevent assignment or comparison with individual flags without masking. + @IntDef({}) + @interface Capabilities {} + + /** + * Returns {@link Capabilities} for the given {@link FormatSupport}. + * + *

The {@link AdaptiveSupport} is set to {@link #ADAPTIVE_NOT_SUPPORTED} and {{@link + * TunnelingSupport} is set to {@link #TUNNELING_NOT_SUPPORTED}. + * + * @param formatSupport The {@link FormatSupport}. + * @return The combined {@link Capabilities} of the given {@link FormatSupport}, {@link + * #ADAPTIVE_NOT_SUPPORTED} and {@link #TUNNELING_NOT_SUPPORTED}. + */ + @Capabilities + static int create(@FormatSupport int formatSupport) { + return create(formatSupport, ADAPTIVE_NOT_SUPPORTED, TUNNELING_NOT_SUPPORTED); + } + + /** + * Returns {@link Capabilities} combining the given {@link FormatSupport}, {@link AdaptiveSupport} + * and {@link TunnelingSupport}. + * + * @param formatSupport The {@link FormatSupport}. + * @param adaptiveSupport The {@link AdaptiveSupport}. + * @param tunnelingSupport The {@link TunnelingSupport}. + * @return The combined {@link Capabilities}. + */ + // Suppression needed for IntDef casting. + @SuppressLint("WrongConstant") + @Capabilities + static int create( + @FormatSupport int formatSupport, + @AdaptiveSupport int adaptiveSupport, + @TunnelingSupport int tunnelingSupport) { + return formatSupport | adaptiveSupport | tunnelingSupport; + } + + /** + * Returns the {@link FormatSupport} from the combined {@link Capabilities}. + * + * @param supportFlags The combined {@link Capabilities}. + * @return The {@link FormatSupport} only. + */ + // Suppression needed for IntDef casting. + @SuppressLint("WrongConstant") + @FormatSupport + static int getFormatSupport(@Capabilities int supportFlags) { + return supportFlags & FORMAT_SUPPORT_MASK; + } + + /** + * Returns the {@link AdaptiveSupport} from the combined {@link Capabilities}. + * + * @param supportFlags The combined {@link Capabilities}. + * @return The {@link AdaptiveSupport} only. + */ + // Suppression needed for IntDef casting. + @SuppressLint("WrongConstant") + @AdaptiveSupport + static int getAdaptiveSupport(@Capabilities int supportFlags) { + return supportFlags & ADAPTIVE_SUPPORT_MASK; + } + + /** + * Returns the {@link TunnelingSupport} from the combined {@link Capabilities}. + * + * @param supportFlags The combined {@link Capabilities}. + * @return The {@link TunnelingSupport} only. + */ + // Suppression needed for IntDef casting. + @SuppressLint("WrongConstant") + @TunnelingSupport + static int getTunnelingSupport(@Capabilities int supportFlags) { + return supportFlags & TUNNELING_SUPPORT_MASK; + } + + /** + * Returns string representation of a {@link FormatSupport} flag. + * + * @param formatSupport A {@link FormatSupport} flag. + * @return A string representation of the flag. + */ + static String getFormatSupportString(@FormatSupport int formatSupport) { + switch (formatSupport) { + case RendererCapabilities.FORMAT_HANDLED: + return "YES"; + case RendererCapabilities.FORMAT_EXCEEDS_CAPABILITIES: + return "NO_EXCEEDS_CAPABILITIES"; + case RendererCapabilities.FORMAT_UNSUPPORTED_DRM: + return "NO_UNSUPPORTED_DRM"; + case RendererCapabilities.FORMAT_UNSUPPORTED_SUBTYPE: + return "NO_UNSUPPORTED_TYPE"; + case RendererCapabilities.FORMAT_UNSUPPORTED_TYPE: + return "NO"; + default: + throw new IllegalStateException(); + } + } + + /** + * Returns the track type that the {@link Renderer} handles. For example, a video renderer will + * return {@link C#TRACK_TYPE_VIDEO}, an audio renderer will return {@link C#TRACK_TYPE_AUDIO}, a + * text renderer will return {@link C#TRACK_TYPE_TEXT}, and so on. + * + * @see Renderer#getTrackType() + * @return One of the {@code TRACK_TYPE_*} constants defined in {@link C}. + */ + int getTrackType(); + + /** + * Returns the extent to which the {@link Renderer} supports a given format. + * + * @param format The format. + * @return The {@link Capabilities} for this format. + * @throws ExoPlaybackException If an error occurs. + */ + @Capabilities + int supportsFormat(Format format) throws ExoPlaybackException; + + /** + * Returns the extent to which the {@link Renderer} supports adapting between supported formats + * that have different MIME types. + * + * @return The {@link AdaptiveSupport} for adapting between supported formats that have different + * MIME types. + * @throws ExoPlaybackException If an error occurs. + */ + @AdaptiveSupport + int supportsMixedMimeTypeAdaptation() throws ExoPlaybackException; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RendererConfiguration.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RendererConfiguration.java new file mode 100644 index 0000000000..d12e2b9fb6 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RendererConfiguration.java @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.Nullable; + +/** + * The configuration of a {@link Renderer}. + */ +public final class RendererConfiguration { + + /** + * The default configuration. + */ + public static final RendererConfiguration DEFAULT = + new RendererConfiguration(C.AUDIO_SESSION_ID_UNSET); + + /** + * The audio session id to use for tunneling, or {@link C#AUDIO_SESSION_ID_UNSET} if tunneling + * should not be enabled. + */ + public final int tunnelingAudioSessionId; + + /** + * @param tunnelingAudioSessionId The audio session id to use for tunneling, or + * {@link C#AUDIO_SESSION_ID_UNSET} if tunneling should not be enabled. + */ + public RendererConfiguration(int tunnelingAudioSessionId) { + this.tunnelingAudioSessionId = tunnelingAudioSessionId; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + RendererConfiguration other = (RendererConfiguration) obj; + return tunnelingAudioSessionId == other.tunnelingAudioSessionId; + } + + @Override + public int hashCode() { + return tunnelingAudioSessionId; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RenderersFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RenderersFactory.java new file mode 100644 index 0000000000..ed46d27fa3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/RenderersFactory.java @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.os.Handler; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioRendererEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.FrameworkMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.TextOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoRendererEventListener; + +/** + * Builds {@link Renderer} instances for use by a {@link SimpleExoPlayer}. + */ +public interface RenderersFactory { + + /** + * Builds the {@link Renderer} instances for a {@link SimpleExoPlayer}. + * + * @param eventHandler A handler to use when invoking event listeners and outputs. + * @param videoRendererEventListener An event listener for video renderers. + * @param audioRendererEventListener An event listener for audio renderers. + * @param textRendererOutput An output for text renderers. + * @param metadataRendererOutput An output for metadata renderers. + * @param drmSessionManager A drm session manager used by renderers. + * @return The {@link Renderer instances}. + */ + Renderer[] createRenderers( + Handler eventHandler, + VideoRendererEventListener videoRendererEventListener, + AudioRendererEventListener audioRendererEventListener, + TextOutput textRendererOutput, + MetadataOutput metadataRendererOutput, + @Nullable DrmSessionManager drmSessionManager); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/SeekParameters.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/SeekParameters.java new file mode 100644 index 0000000000..03c1d0165d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/SeekParameters.java @@ -0,0 +1,91 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * Parameters that apply to seeking. + * + *

The predefined {@link #EXACT}, {@link #CLOSEST_SYNC}, {@link #PREVIOUS_SYNC} and {@link + * #NEXT_SYNC} parameters are suitable for most use cases. Seeking to sync points is typically + * faster but less accurate than exact seeking. + * + *

In the general case, an instance specifies a maximum tolerance before ({@link + * #toleranceBeforeUs}) and after ({@link #toleranceAfterUs}) a requested seek position ({@code x}). + * If one or more sync points falls within the window {@code [x - toleranceBeforeUs, x + + * toleranceAfterUs]} then the seek will be performed to the sync point within the window that's + * closest to {@code x}. If no sync point falls within the window then the seek will be performed to + * {@code x - toleranceBeforeUs}. Internally the player may need to seek to an earlier sync point + * and discard media until this position is reached. + */ +public final class SeekParameters { + + /** Parameters for exact seeking. */ + public static final SeekParameters EXACT = new SeekParameters(0, 0); + /** Parameters for seeking to the closest sync point. */ + public static final SeekParameters CLOSEST_SYNC = + new SeekParameters(Long.MAX_VALUE, Long.MAX_VALUE); + /** Parameters for seeking to the sync point immediately before a requested seek position. */ + public static final SeekParameters PREVIOUS_SYNC = new SeekParameters(Long.MAX_VALUE, 0); + /** Parameters for seeking to the sync point immediately after a requested seek position. */ + public static final SeekParameters NEXT_SYNC = new SeekParameters(0, Long.MAX_VALUE); + /** Default parameters. */ + public static final SeekParameters DEFAULT = EXACT; + + /** + * The maximum time that the actual position seeked to may precede the requested seek position, in + * microseconds. + */ + public final long toleranceBeforeUs; + /** + * The maximum time that the actual position seeked to may exceed the requested seek position, in + * microseconds. + */ + public final long toleranceAfterUs; + + /** + * @param toleranceBeforeUs The maximum time that the actual position seeked to may precede the + * requested seek position, in microseconds. Must be non-negative. + * @param toleranceAfterUs The maximum time that the actual position seeked to may exceed the + * requested seek position, in microseconds. Must be non-negative. + */ + public SeekParameters(long toleranceBeforeUs, long toleranceAfterUs) { + Assertions.checkArgument(toleranceBeforeUs >= 0); + Assertions.checkArgument(toleranceAfterUs >= 0); + this.toleranceBeforeUs = toleranceBeforeUs; + this.toleranceAfterUs = toleranceAfterUs; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + SeekParameters other = (SeekParameters) obj; + return toleranceBeforeUs == other.toleranceBeforeUs + && toleranceAfterUs == other.toleranceAfterUs; + } + + @Override + public int hashCode() { + return (31 * (int) toleranceBeforeUs) + (int) toleranceAfterUs; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/SimpleExoPlayer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/SimpleExoPlayer.java new file mode 100644 index 0000000000..7b632ed051 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/SimpleExoPlayer.java @@ -0,0 +1,1845 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.annotation.TargetApi; +import android.content.Context; +import android.graphics.Rect; +import android.graphics.SurfaceTexture; +import android.media.MediaCodec; +import android.media.PlaybackParams; +import android.os.Handler; +import android.os.Looper; +import android.view.Surface; +import android.view.SurfaceHolder; +import android.view.SurfaceView; +import android.view.TextureView; +import androidx.annotation.Nullable; +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.analytics.AnalyticsCollector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.analytics.AnalyticsListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioRendererEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AuxEffectInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderCounters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DefaultDrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.FrameworkMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.TextOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.DefaultTrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultBandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Clock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.PriorityTaskManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoDecoderOutputBufferRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoFrameMetadataListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoRendererEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical.CameraMotionListener; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.concurrent.CopyOnWriteArraySet; + +/** + * An {@link ExoPlayer} implementation that uses default {@link Renderer} components. Instances can + * be obtained from {@link SimpleExoPlayer.Builder}. + */ +public class SimpleExoPlayer extends BasePlayer + implements ExoPlayer, + Player.AudioComponent, + Player.VideoComponent, + Player.TextComponent, + Player.MetadataComponent { + + /** @deprecated Use {@link org.mozilla.thirdparty.com.google.android.exoplayer2video.VideoListener}. */ + @Deprecated + public interface VideoListener extends org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener {} + + /** + * A builder for {@link SimpleExoPlayer} instances. + * + *

See {@link #Builder(Context)} for the list of default values. + */ + public static final class Builder { + + private final Context context; + private final RenderersFactory renderersFactory; + + private Clock clock; + private TrackSelector trackSelector; + private LoadControl loadControl; + private BandwidthMeter bandwidthMeter; + private AnalyticsCollector analyticsCollector; + private Looper looper; + private boolean useLazyPreparation; + private boolean buildCalled; + + /** + * Creates a builder. + * + *

Use {@link #Builder(Context, RenderersFactory)} instead, if you intend to provide a custom + * {@link RenderersFactory}. This is to ensure that ProGuard or R8 can remove ExoPlayer's {@link + * DefaultRenderersFactory} from the APK. + * + *

The builder uses the following default values: + * + *

+ * + * @param context A {@link Context}. + */ + public Builder(Context context) { + this(context, new DefaultRenderersFactory(context)); + } + + /** + * Creates a builder with a custom {@link RenderersFactory}. + * + *

See {@link #Builder(Context)} for a list of default values. + * + * @param context A {@link Context}. + * @param renderersFactory A factory for creating {@link Renderer Renderers} to be used by the + * player. + */ + public Builder(Context context, RenderersFactory renderersFactory) { + this( + context, + renderersFactory, + new DefaultTrackSelector(context), + new DefaultLoadControl(), + DefaultBandwidthMeter.getSingletonInstance(context), + Util.getLooper(), + new AnalyticsCollector(Clock.DEFAULT), + /* useLazyPreparation= */ true, + Clock.DEFAULT); + } + + /** + * Creates a builder with the specified custom components. + * + *

Note that this constructor is only useful if you try to ensure that ExoPlayer's default + * components can be removed by ProGuard or R8. For most components except renderers, there is + * only a marginal benefit of doing that. + * + * @param context A {@link Context}. + * @param renderersFactory A factory for creating {@link Renderer Renderers} to be used by the + * player. + * @param trackSelector A {@link TrackSelector}. + * @param loadControl A {@link LoadControl}. + * @param bandwidthMeter A {@link BandwidthMeter}. + * @param looper A {@link Looper} that must be used for all calls to the player. + * @param analyticsCollector An {@link AnalyticsCollector}. + * @param useLazyPreparation Whether media sources should be initialized lazily. + * @param clock A {@link Clock}. Should always be {@link Clock#DEFAULT}. + */ + public Builder( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + LoadControl loadControl, + BandwidthMeter bandwidthMeter, + Looper looper, + AnalyticsCollector analyticsCollector, + boolean useLazyPreparation, + Clock clock) { + this.context = context; + this.renderersFactory = renderersFactory; + this.trackSelector = trackSelector; + this.loadControl = loadControl; + this.bandwidthMeter = bandwidthMeter; + this.looper = looper; + this.analyticsCollector = analyticsCollector; + this.useLazyPreparation = useLazyPreparation; + this.clock = clock; + } + + /** + * Sets the {@link TrackSelector} that will be used by the player. + * + * @param trackSelector A {@link TrackSelector}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setTrackSelector(TrackSelector trackSelector) { + Assertions.checkState(!buildCalled); + this.trackSelector = trackSelector; + return this; + } + + /** + * Sets the {@link LoadControl} that will be used by the player. + * + * @param loadControl A {@link LoadControl}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setLoadControl(LoadControl loadControl) { + Assertions.checkState(!buildCalled); + this.loadControl = loadControl; + return this; + } + + /** + * Sets the {@link BandwidthMeter} that will be used by the player. + * + * @param bandwidthMeter A {@link BandwidthMeter}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setBandwidthMeter(BandwidthMeter bandwidthMeter) { + Assertions.checkState(!buildCalled); + this.bandwidthMeter = bandwidthMeter; + return this; + } + + /** + * Sets the {@link Looper} that must be used for all calls to the player and that is used to + * call listeners on. + * + * @param looper A {@link Looper}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setLooper(Looper looper) { + Assertions.checkState(!buildCalled); + this.looper = looper; + return this; + } + + /** + * Sets the {@link AnalyticsCollector} that will collect and forward all player events. + * + * @param analyticsCollector An {@link AnalyticsCollector}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setAnalyticsCollector(AnalyticsCollector analyticsCollector) { + Assertions.checkState(!buildCalled); + this.analyticsCollector = analyticsCollector; + return this; + } + + /** + * Sets whether media sources should be initialized lazily. + * + *

If false, all initial preparation steps (e.g., manifest loads) happen immediately. If + * true, these initial preparations are triggered only when the player starts buffering the + * media. + * + * @param useLazyPreparation Whether to use lazy preparation. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public Builder setUseLazyPreparation(boolean useLazyPreparation) { + Assertions.checkState(!buildCalled); + this.useLazyPreparation = useLazyPreparation; + return this; + } + + /** + * Sets the {@link Clock} that will be used by the player. Should only be set for testing + * purposes. + * + * @param clock A {@link Clock}. + * @return This builder. + * @throws IllegalStateException If {@link #build()} has already been called. + */ + @VisibleForTesting + public Builder setClock(Clock clock) { + Assertions.checkState(!buildCalled); + this.clock = clock; + return this; + } + + /** + * Builds a {@link SimpleExoPlayer} instance. + * + * @throws IllegalStateException If {@link #build()} has already been called. + */ + public SimpleExoPlayer build() { + Assertions.checkState(!buildCalled); + buildCalled = true; + return new SimpleExoPlayer( + context, + renderersFactory, + trackSelector, + loadControl, + bandwidthMeter, + analyticsCollector, + clock, + looper); + } + } + + private static final String TAG = "SimpleExoPlayer"; + + protected final Renderer[] renderers; + + private final ExoPlayerImpl player; + private final Handler eventHandler; + private final ComponentListener componentListener; + private final CopyOnWriteArraySet + videoListeners; + private final CopyOnWriteArraySet audioListeners; + private final CopyOnWriteArraySet textOutputs; + private final CopyOnWriteArraySet metadataOutputs; + private final CopyOnWriteArraySet videoDebugListeners; + private final CopyOnWriteArraySet audioDebugListeners; + private final BandwidthMeter bandwidthMeter; + private final AnalyticsCollector analyticsCollector; + + private final AudioBecomingNoisyManager audioBecomingNoisyManager; + private final AudioFocusManager audioFocusManager; + private final WakeLockManager wakeLockManager; + private final WifiLockManager wifiLockManager; + + @Nullable private Format videoFormat; + @Nullable private Format audioFormat; + + @Nullable private VideoDecoderOutputBufferRenderer videoDecoderOutputBufferRenderer; + @Nullable private Surface surface; + private boolean ownsSurface; + private @C.VideoScalingMode int videoScalingMode; + @Nullable private SurfaceHolder surfaceHolder; + @Nullable private TextureView textureView; + private int surfaceWidth; + private int surfaceHeight; + @Nullable private DecoderCounters videoDecoderCounters; + @Nullable private DecoderCounters audioDecoderCounters; + private int audioSessionId; + private AudioAttributes audioAttributes; + private float audioVolume; + @Nullable private MediaSource mediaSource; + private List currentCues; + @Nullable private VideoFrameMetadataListener videoFrameMetadataListener; + @Nullable private CameraMotionListener cameraMotionListener; + private boolean hasNotifiedFullWrongThreadWarning; + @Nullable private PriorityTaskManager priorityTaskManager; + private boolean isPriorityTaskManagerRegistered; + private boolean playerReleased; + + /** + * @param context A {@link Context}. + * @param renderersFactory A factory for creating {@link Renderer}s to be used by the instance. + * @param trackSelector The {@link TrackSelector} that will be used by the instance. + * @param loadControl The {@link LoadControl} that will be used by the instance. + * @param bandwidthMeter The {@link BandwidthMeter} that will be used by the instance. + * @param analyticsCollector A factory for creating the {@link AnalyticsCollector} that will + * collect and forward all player events. + * @param clock The {@link Clock} that will be used by the instance. Should always be {@link + * Clock#DEFAULT}, unless the player is being used from a test. + * @param looper The {@link Looper} which must be used for all calls to the player and which is + * used to call listeners on. + */ + @SuppressWarnings("deprecation") + protected SimpleExoPlayer( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + LoadControl loadControl, + BandwidthMeter bandwidthMeter, + AnalyticsCollector analyticsCollector, + Clock clock, + Looper looper) { + this( + context, + renderersFactory, + trackSelector, + loadControl, + DrmSessionManager.getDummyDrmSessionManager(), + bandwidthMeter, + analyticsCollector, + clock, + looper); + } + + /** + * @param context A {@link Context}. + * @param renderersFactory A factory for creating {@link Renderer}s to be used by the instance. + * @param trackSelector The {@link TrackSelector} that will be used by the instance. + * @param loadControl The {@link LoadControl} that will be used by the instance. + * @param drmSessionManager An optional {@link DrmSessionManager}. May be null if the instance + * will not be used for DRM protected playbacks. + * @param bandwidthMeter The {@link BandwidthMeter} that will be used by the instance. + * @param analyticsCollector The {@link AnalyticsCollector} that will collect and forward all + * player events. + * @param clock The {@link Clock} that will be used by the instance. Should always be {@link + * Clock#DEFAULT}, unless the player is being used from a test. + * @param looper The {@link Looper} which must be used for all calls to the player and which is + * used to call listeners on. + * @deprecated Use {@link #SimpleExoPlayer(Context, RenderersFactory, TrackSelector, LoadControl, + * BandwidthMeter, AnalyticsCollector, Clock, Looper)} instead, and pass the {@link + * DrmSessionManager} to the {@link MediaSource} factories. + */ + @Deprecated + protected SimpleExoPlayer( + Context context, + RenderersFactory renderersFactory, + TrackSelector trackSelector, + LoadControl loadControl, + @Nullable DrmSessionManager drmSessionManager, + BandwidthMeter bandwidthMeter, + AnalyticsCollector analyticsCollector, + Clock clock, + Looper looper) { + this.bandwidthMeter = bandwidthMeter; + this.analyticsCollector = analyticsCollector; + componentListener = new ComponentListener(); + videoListeners = new CopyOnWriteArraySet<>(); + audioListeners = new CopyOnWriteArraySet<>(); + textOutputs = new CopyOnWriteArraySet<>(); + metadataOutputs = new CopyOnWriteArraySet<>(); + videoDebugListeners = new CopyOnWriteArraySet<>(); + audioDebugListeners = new CopyOnWriteArraySet<>(); + eventHandler = new Handler(looper); + renderers = + renderersFactory.createRenderers( + eventHandler, + componentListener, + componentListener, + componentListener, + componentListener, + drmSessionManager); + + // Set initial values. + audioVolume = 1; + audioSessionId = C.AUDIO_SESSION_ID_UNSET; + audioAttributes = AudioAttributes.DEFAULT; + videoScalingMode = C.VIDEO_SCALING_MODE_DEFAULT; + currentCues = Collections.emptyList(); + + // Build the player and associated objects. + player = + new ExoPlayerImpl(renderers, trackSelector, loadControl, bandwidthMeter, clock, looper); + analyticsCollector.setPlayer(player); + player.addListener(analyticsCollector); + player.addListener(componentListener); + videoDebugListeners.add(analyticsCollector); + videoListeners.add(analyticsCollector); + audioDebugListeners.add(analyticsCollector); + audioListeners.add(analyticsCollector); + addMetadataOutput(analyticsCollector); + bandwidthMeter.addEventListener(eventHandler, analyticsCollector); + if (drmSessionManager instanceof DefaultDrmSessionManager) { + ((DefaultDrmSessionManager) drmSessionManager).addListener(eventHandler, analyticsCollector); + } + audioBecomingNoisyManager = + new AudioBecomingNoisyManager(context, eventHandler, componentListener); + audioFocusManager = new AudioFocusManager(context, eventHandler, componentListener); + wakeLockManager = new WakeLockManager(context); + wifiLockManager = new WifiLockManager(context); + } + + @Override + @Nullable + public AudioComponent getAudioComponent() { + return this; + } + + @Override + @Nullable + public VideoComponent getVideoComponent() { + return this; + } + + @Override + @Nullable + public TextComponent getTextComponent() { + return this; + } + + @Override + @Nullable + public MetadataComponent getMetadataComponent() { + return this; + } + + /** + * Sets the video scaling mode. + * + *

Note that the scaling mode only applies if a {@link MediaCodec}-based video {@link Renderer} + * is enabled and if the output surface is owned by a {@link android.view.SurfaceView}. + * + * @param videoScalingMode The video scaling mode. + */ + @Override + public void setVideoScalingMode(@C.VideoScalingMode int videoScalingMode) { + verifyApplicationThread(); + this.videoScalingMode = videoScalingMode; + for (Renderer renderer : renderers) { + if (renderer.getTrackType() == C.TRACK_TYPE_VIDEO) { + player + .createMessage(renderer) + .setType(C.MSG_SET_SCALING_MODE) + .setPayload(videoScalingMode) + .send(); + } + } + } + + @Override + public @C.VideoScalingMode int getVideoScalingMode() { + return videoScalingMode; + } + + @Override + public void clearVideoSurface() { + verifyApplicationThread(); + removeSurfaceCallbacks(); + setVideoSurfaceInternal(/* surface= */ null, /* ownsSurface= */ false); + maybeNotifySurfaceSizeChanged(/* width= */ 0, /* height= */ 0); + } + + @Override + public void clearVideoSurface(@Nullable Surface surface) { + verifyApplicationThread(); + if (surface != null && surface == this.surface) { + clearVideoSurface(); + } + } + + @Override + public void setVideoSurface(@Nullable Surface surface) { + verifyApplicationThread(); + removeSurfaceCallbacks(); + if (surface != null) { + clearVideoDecoderOutputBufferRenderer(); + } + setVideoSurfaceInternal(surface, /* ownsSurface= */ false); + int newSurfaceSize = surface == null ? 0 : C.LENGTH_UNSET; + maybeNotifySurfaceSizeChanged(/* width= */ newSurfaceSize, /* height= */ newSurfaceSize); + } + + @Override + public void setVideoSurfaceHolder(@Nullable SurfaceHolder surfaceHolder) { + verifyApplicationThread(); + removeSurfaceCallbacks(); + if (surfaceHolder != null) { + clearVideoDecoderOutputBufferRenderer(); + } + this.surfaceHolder = surfaceHolder; + if (surfaceHolder == null) { + setVideoSurfaceInternal(null, /* ownsSurface= */ false); + maybeNotifySurfaceSizeChanged(/* width= */ 0, /* height= */ 0); + } else { + surfaceHolder.addCallback(componentListener); + Surface surface = surfaceHolder.getSurface(); + if (surface != null && surface.isValid()) { + setVideoSurfaceInternal(surface, /* ownsSurface= */ false); + Rect surfaceSize = surfaceHolder.getSurfaceFrame(); + maybeNotifySurfaceSizeChanged(surfaceSize.width(), surfaceSize.height()); + } else { + setVideoSurfaceInternal(/* surface= */ null, /* ownsSurface= */ false); + maybeNotifySurfaceSizeChanged(/* width= */ 0, /* height= */ 0); + } + } + } + + @Override + public void clearVideoSurfaceHolder(@Nullable SurfaceHolder surfaceHolder) { + verifyApplicationThread(); + if (surfaceHolder != null && surfaceHolder == this.surfaceHolder) { + setVideoSurfaceHolder(null); + } + } + + @Override + public void setVideoSurfaceView(@Nullable SurfaceView surfaceView) { + setVideoSurfaceHolder(surfaceView == null ? null : surfaceView.getHolder()); + } + + @Override + public void clearVideoSurfaceView(@Nullable SurfaceView surfaceView) { + clearVideoSurfaceHolder(surfaceView == null ? null : surfaceView.getHolder()); + } + + @Override + public void setVideoTextureView(@Nullable TextureView textureView) { + verifyApplicationThread(); + removeSurfaceCallbacks(); + if (textureView != null) { + clearVideoDecoderOutputBufferRenderer(); + } + this.textureView = textureView; + if (textureView == null) { + setVideoSurfaceInternal(/* surface= */ null, /* ownsSurface= */ true); + maybeNotifySurfaceSizeChanged(/* width= */ 0, /* height= */ 0); + } else { + if (textureView.getSurfaceTextureListener() != null) { + Log.w(TAG, "Replacing existing SurfaceTextureListener."); + } + textureView.setSurfaceTextureListener(componentListener); + SurfaceTexture surfaceTexture = + textureView.isAvailable() ? textureView.getSurfaceTexture() : null; + if (surfaceTexture == null) { + setVideoSurfaceInternal(/* surface= */ null, /* ownsSurface= */ true); + maybeNotifySurfaceSizeChanged(/* width= */ 0, /* height= */ 0); + } else { + setVideoSurfaceInternal(new Surface(surfaceTexture), /* ownsSurface= */ true); + maybeNotifySurfaceSizeChanged(textureView.getWidth(), textureView.getHeight()); + } + } + } + + @Override + public void clearVideoTextureView(@Nullable TextureView textureView) { + verifyApplicationThread(); + if (textureView != null && textureView == this.textureView) { + setVideoTextureView(null); + } + } + + @Override + public void setVideoDecoderOutputBufferRenderer( + @Nullable VideoDecoderOutputBufferRenderer videoDecoderOutputBufferRenderer) { + verifyApplicationThread(); + if (videoDecoderOutputBufferRenderer != null) { + clearVideoSurface(); + } + setVideoDecoderOutputBufferRendererInternal(videoDecoderOutputBufferRenderer); + } + + @Override + public void clearVideoDecoderOutputBufferRenderer() { + verifyApplicationThread(); + setVideoDecoderOutputBufferRendererInternal(/* videoDecoderOutputBufferRenderer= */ null); + } + + @Override + public void clearVideoDecoderOutputBufferRenderer( + @Nullable VideoDecoderOutputBufferRenderer videoDecoderOutputBufferRenderer) { + verifyApplicationThread(); + if (videoDecoderOutputBufferRenderer != null + && videoDecoderOutputBufferRenderer == this.videoDecoderOutputBufferRenderer) { + clearVideoDecoderOutputBufferRenderer(); + } + } + + @Override + public void addAudioListener(AudioListener listener) { + audioListeners.add(listener); + } + + @Override + public void removeAudioListener(AudioListener listener) { + audioListeners.remove(listener); + } + + @Override + public void setAudioAttributes(AudioAttributes audioAttributes) { + setAudioAttributes(audioAttributes, /* handleAudioFocus= */ false); + } + + @Override + public void setAudioAttributes(AudioAttributes audioAttributes, boolean handleAudioFocus) { + verifyApplicationThread(); + if (playerReleased) { + return; + } + if (!Util.areEqual(this.audioAttributes, audioAttributes)) { + this.audioAttributes = audioAttributes; + for (Renderer renderer : renderers) { + if (renderer.getTrackType() == C.TRACK_TYPE_AUDIO) { + player + .createMessage(renderer) + .setType(C.MSG_SET_AUDIO_ATTRIBUTES) + .setPayload(audioAttributes) + .send(); + } + } + for (AudioListener audioListener : audioListeners) { + audioListener.onAudioAttributesChanged(audioAttributes); + } + } + + audioFocusManager.setAudioAttributes(handleAudioFocus ? audioAttributes : null); + boolean playWhenReady = getPlayWhenReady(); + @AudioFocusManager.PlayerCommand + int playerCommand = audioFocusManager.updateAudioFocus(playWhenReady, getPlaybackState()); + updatePlayWhenReady(playWhenReady, playerCommand); + } + + @Override + public AudioAttributes getAudioAttributes() { + return audioAttributes; + } + + @Override + public int getAudioSessionId() { + return audioSessionId; + } + + @Override + public void setAuxEffectInfo(AuxEffectInfo auxEffectInfo) { + verifyApplicationThread(); + for (Renderer renderer : renderers) { + if (renderer.getTrackType() == C.TRACK_TYPE_AUDIO) { + player + .createMessage(renderer) + .setType(C.MSG_SET_AUX_EFFECT_INFO) + .setPayload(auxEffectInfo) + .send(); + } + } + } + + @Override + public void clearAuxEffectInfo() { + setAuxEffectInfo(new AuxEffectInfo(AuxEffectInfo.NO_AUX_EFFECT_ID, /* sendLevel= */ 0f)); + } + + @Override + public void setVolume(float audioVolume) { + verifyApplicationThread(); + audioVolume = Util.constrainValue(audioVolume, /* min= */ 0, /* max= */ 1); + if (this.audioVolume == audioVolume) { + return; + } + this.audioVolume = audioVolume; + sendVolumeToRenderers(); + for (AudioListener audioListener : audioListeners) { + audioListener.onVolumeChanged(audioVolume); + } + } + + @Override + public float getVolume() { + return audioVolume; + } + + /** + * Sets the stream type for audio playback, used by the underlying audio track. + * + *

Setting the stream type during playback may introduce a short gap in audio output as the + * audio track is recreated. A new audio session id will also be generated. + * + *

Calling this method overwrites any attributes set previously by calling {@link + * #setAudioAttributes(AudioAttributes)}. + * + * @deprecated Use {@link #setAudioAttributes(AudioAttributes)}. + * @param streamType The stream type for audio playback. + */ + @Deprecated + public void setAudioStreamType(@C.StreamType int streamType) { + @C.AudioUsage int usage = Util.getAudioUsageForStreamType(streamType); + @C.AudioContentType int contentType = Util.getAudioContentTypeForStreamType(streamType); + AudioAttributes audioAttributes = + new AudioAttributes.Builder().setUsage(usage).setContentType(contentType).build(); + setAudioAttributes(audioAttributes); + } + + /** + * Returns the stream type for audio playback. + * + * @deprecated Use {@link #getAudioAttributes()}. + */ + @Deprecated + public @C.StreamType int getAudioStreamType() { + return Util.getStreamTypeForAudioUsage(audioAttributes.usage); + } + + /** Returns the {@link AnalyticsCollector} used for collecting analytics events. */ + public AnalyticsCollector getAnalyticsCollector() { + return analyticsCollector; + } + + /** + * Adds an {@link AnalyticsListener} to receive analytics events. + * + * @param listener The listener to be added. + */ + public void addAnalyticsListener(AnalyticsListener listener) { + verifyApplicationThread(); + analyticsCollector.addListener(listener); + } + + /** + * Removes an {@link AnalyticsListener}. + * + * @param listener The listener to be removed. + */ + public void removeAnalyticsListener(AnalyticsListener listener) { + verifyApplicationThread(); + analyticsCollector.removeListener(listener); + } + + /** + * Sets whether the player should pause automatically when audio is rerouted from a headset to + * device speakers. See the audio + * becoming noisy documentation for more information. + * + *

This feature is not enabled by default. + * + * @param handleAudioBecomingNoisy Whether the player should pause automatically when audio is + * rerouted from a headset to device speakers. + */ + public void setHandleAudioBecomingNoisy(boolean handleAudioBecomingNoisy) { + verifyApplicationThread(); + if (playerReleased) { + return; + } + audioBecomingNoisyManager.setEnabled(handleAudioBecomingNoisy); + } + + /** + * Sets a {@link PriorityTaskManager}, or null to clear a previously set priority task manager. + * + *

The priority {@link C#PRIORITY_PLAYBACK} will be set while the player is loading. + * + * @param priorityTaskManager The {@link PriorityTaskManager}, or null to clear a previously set + * priority task manager. + */ + public void setPriorityTaskManager(@Nullable PriorityTaskManager priorityTaskManager) { + verifyApplicationThread(); + if (Util.areEqual(this.priorityTaskManager, priorityTaskManager)) { + return; + } + if (isPriorityTaskManagerRegistered) { + Assertions.checkNotNull(this.priorityTaskManager).remove(C.PRIORITY_PLAYBACK); + } + if (priorityTaskManager != null && isLoading()) { + priorityTaskManager.add(C.PRIORITY_PLAYBACK); + isPriorityTaskManagerRegistered = true; + } else { + isPriorityTaskManagerRegistered = false; + } + this.priorityTaskManager = priorityTaskManager; + } + + /** + * Sets the {@link PlaybackParams} governing audio playback. + * + * @deprecated Use {@link #setPlaybackParameters(PlaybackParameters)}. + * @param params The {@link PlaybackParams}, or null to clear any previously set parameters. + */ + @Deprecated + @TargetApi(23) + public void setPlaybackParams(@Nullable PlaybackParams params) { + PlaybackParameters playbackParameters; + if (params != null) { + params.allowDefaults(); + playbackParameters = new PlaybackParameters(params.getSpeed(), params.getPitch()); + } else { + playbackParameters = null; + } + setPlaybackParameters(playbackParameters); + } + + /** Returns the video format currently being played, or null if no video is being played. */ + @Nullable + public Format getVideoFormat() { + return videoFormat; + } + + /** Returns the audio format currently being played, or null if no audio is being played. */ + @Nullable + public Format getAudioFormat() { + return audioFormat; + } + + /** Returns {@link DecoderCounters} for video, or null if no video is being played. */ + @Nullable + public DecoderCounters getVideoDecoderCounters() { + return videoDecoderCounters; + } + + /** Returns {@link DecoderCounters} for audio, or null if no audio is being played. */ + @Nullable + public DecoderCounters getAudioDecoderCounters() { + return audioDecoderCounters; + } + + @Override + public void addVideoListener(org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener listener) { + videoListeners.add(listener); + } + + @Override + public void removeVideoListener(org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener listener) { + videoListeners.remove(listener); + } + + @Override + public void setVideoFrameMetadataListener(VideoFrameMetadataListener listener) { + verifyApplicationThread(); + videoFrameMetadataListener = listener; + for (Renderer renderer : renderers) { + if (renderer.getTrackType() == C.TRACK_TYPE_VIDEO) { + player + .createMessage(renderer) + .setType(C.MSG_SET_VIDEO_FRAME_METADATA_LISTENER) + .setPayload(listener) + .send(); + } + } + } + + @Override + public void clearVideoFrameMetadataListener(VideoFrameMetadataListener listener) { + verifyApplicationThread(); + if (videoFrameMetadataListener != listener) { + return; + } + for (Renderer renderer : renderers) { + if (renderer.getTrackType() == C.TRACK_TYPE_VIDEO) { + player + .createMessage(renderer) + .setType(C.MSG_SET_VIDEO_FRAME_METADATA_LISTENER) + .setPayload(null) + .send(); + } + } + } + + @Override + public void setCameraMotionListener(CameraMotionListener listener) { + verifyApplicationThread(); + cameraMotionListener = listener; + for (Renderer renderer : renderers) { + if (renderer.getTrackType() == C.TRACK_TYPE_CAMERA_MOTION) { + player + .createMessage(renderer) + .setType(C.MSG_SET_CAMERA_MOTION_LISTENER) + .setPayload(listener) + .send(); + } + } + } + + @Override + public void clearCameraMotionListener(CameraMotionListener listener) { + verifyApplicationThread(); + if (cameraMotionListener != listener) { + return; + } + for (Renderer renderer : renderers) { + if (renderer.getTrackType() == C.TRACK_TYPE_CAMERA_MOTION) { + player + .createMessage(renderer) + .setType(C.MSG_SET_CAMERA_MOTION_LISTENER) + .setPayload(null) + .send(); + } + } + } + + /** + * Sets a listener to receive video events, removing all existing listeners. + * + * @param listener The listener. + * @deprecated Use {@link #addVideoListener(org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener)}. + */ + @Deprecated + @SuppressWarnings("deprecation") + public void setVideoListener(VideoListener listener) { + videoListeners.clear(); + if (listener != null) { + addVideoListener(listener); + } + } + + /** + * Equivalent to {@link #removeVideoListener(org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener)}. + * + * @param listener The listener to clear. + * @deprecated Use {@link + * #removeVideoListener(org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener)}. + */ + @Deprecated + @SuppressWarnings("deprecation") + public void clearVideoListener(VideoListener listener) { + removeVideoListener(listener); + } + + @Override + public void addTextOutput(TextOutput listener) { + if (!currentCues.isEmpty()) { + listener.onCues(currentCues); + } + textOutputs.add(listener); + } + + @Override + public void removeTextOutput(TextOutput listener) { + textOutputs.remove(listener); + } + + /** + * Sets an output to receive text events, removing all existing outputs. + * + * @param output The output. + * @deprecated Use {@link #addTextOutput(TextOutput)}. + */ + @Deprecated + public void setTextOutput(TextOutput output) { + textOutputs.clear(); + if (output != null) { + addTextOutput(output); + } + } + + /** + * Equivalent to {@link #removeTextOutput(TextOutput)}. + * + * @param output The output to clear. + * @deprecated Use {@link #removeTextOutput(TextOutput)}. + */ + @Deprecated + public void clearTextOutput(TextOutput output) { + removeTextOutput(output); + } + + @Override + public void addMetadataOutput(MetadataOutput listener) { + metadataOutputs.add(listener); + } + + @Override + public void removeMetadataOutput(MetadataOutput listener) { + metadataOutputs.remove(listener); + } + + /** + * Sets an output to receive metadata events, removing all existing outputs. + * + * @param output The output. + * @deprecated Use {@link #addMetadataOutput(MetadataOutput)}. + */ + @Deprecated + public void setMetadataOutput(MetadataOutput output) { + metadataOutputs.retainAll(Collections.singleton(analyticsCollector)); + if (output != null) { + addMetadataOutput(output); + } + } + + /** + * Equivalent to {@link #removeMetadataOutput(MetadataOutput)}. + * + * @param output The output to clear. + * @deprecated Use {@link #removeMetadataOutput(MetadataOutput)}. + */ + @Deprecated + public void clearMetadataOutput(MetadataOutput output) { + removeMetadataOutput(output); + } + + /** + * @deprecated Use {@link #addAnalyticsListener(AnalyticsListener)} to get more detailed debug + * information. + */ + @Deprecated + @SuppressWarnings("deprecation") + public void setVideoDebugListener(VideoRendererEventListener listener) { + videoDebugListeners.retainAll(Collections.singleton(analyticsCollector)); + if (listener != null) { + addVideoDebugListener(listener); + } + } + + /** + * @deprecated Use {@link #addAnalyticsListener(AnalyticsListener)} to get more detailed debug + * information. + */ + @Deprecated + public void addVideoDebugListener(VideoRendererEventListener listener) { + videoDebugListeners.add(listener); + } + + /** + * @deprecated Use {@link #addAnalyticsListener(AnalyticsListener)} and {@link + * #removeAnalyticsListener(AnalyticsListener)} to get more detailed debug information. + */ + @Deprecated + public void removeVideoDebugListener(VideoRendererEventListener listener) { + videoDebugListeners.remove(listener); + } + + /** + * @deprecated Use {@link #addAnalyticsListener(AnalyticsListener)} to get more detailed debug + * information. + */ + @Deprecated + @SuppressWarnings("deprecation") + public void setAudioDebugListener(AudioRendererEventListener listener) { + audioDebugListeners.retainAll(Collections.singleton(analyticsCollector)); + if (listener != null) { + addAudioDebugListener(listener); + } + } + + /** + * @deprecated Use {@link #addAnalyticsListener(AnalyticsListener)} to get more detailed debug + * information. + */ + @Deprecated + public void addAudioDebugListener(AudioRendererEventListener listener) { + audioDebugListeners.add(listener); + } + + /** + * @deprecated Use {@link #addAnalyticsListener(AnalyticsListener)} and {@link + * #removeAnalyticsListener(AnalyticsListener)} to get more detailed debug information. + */ + @Deprecated + public void removeAudioDebugListener(AudioRendererEventListener listener) { + audioDebugListeners.remove(listener); + } + + // ExoPlayer implementation + + @Override + public Looper getPlaybackLooper() { + return player.getPlaybackLooper(); + } + + @Override + public Looper getApplicationLooper() { + return player.getApplicationLooper(); + } + + @Override + public void addListener(Player.EventListener listener) { + verifyApplicationThread(); + player.addListener(listener); + } + + @Override + public void removeListener(Player.EventListener listener) { + verifyApplicationThread(); + player.removeListener(listener); + } + + @Override + @State + public int getPlaybackState() { + verifyApplicationThread(); + return player.getPlaybackState(); + } + + @Override + @PlaybackSuppressionReason + public int getPlaybackSuppressionReason() { + verifyApplicationThread(); + return player.getPlaybackSuppressionReason(); + } + + @Override + @Nullable + public ExoPlaybackException getPlaybackError() { + verifyApplicationThread(); + return player.getPlaybackError(); + } + + @Override + public void retry() { + verifyApplicationThread(); + if (mediaSource != null + && (getPlaybackError() != null || getPlaybackState() == Player.STATE_IDLE)) { + prepare(mediaSource, /* resetPosition= */ false, /* resetState= */ false); + } + } + + @Override + public void prepare(MediaSource mediaSource) { + prepare(mediaSource, /* resetPosition= */ true, /* resetState= */ true); + } + + @Override + public void prepare(MediaSource mediaSource, boolean resetPosition, boolean resetState) { + verifyApplicationThread(); + if (this.mediaSource != null) { + this.mediaSource.removeEventListener(analyticsCollector); + analyticsCollector.resetForNewMediaSource(); + } + this.mediaSource = mediaSource; + mediaSource.addEventListener(eventHandler, analyticsCollector); + boolean playWhenReady = getPlayWhenReady(); + @AudioFocusManager.PlayerCommand + int playerCommand = audioFocusManager.updateAudioFocus(playWhenReady, Player.STATE_BUFFERING); + updatePlayWhenReady(playWhenReady, playerCommand); + player.prepare(mediaSource, resetPosition, resetState); + } + + @Override + public void setPlayWhenReady(boolean playWhenReady) { + verifyApplicationThread(); + @AudioFocusManager.PlayerCommand + int playerCommand = audioFocusManager.updateAudioFocus(playWhenReady, getPlaybackState()); + updatePlayWhenReady(playWhenReady, playerCommand); + } + + @Override + public boolean getPlayWhenReady() { + verifyApplicationThread(); + return player.getPlayWhenReady(); + } + + @Override + public @RepeatMode int getRepeatMode() { + verifyApplicationThread(); + return player.getRepeatMode(); + } + + @Override + public void setRepeatMode(@RepeatMode int repeatMode) { + verifyApplicationThread(); + player.setRepeatMode(repeatMode); + } + + @Override + public void setShuffleModeEnabled(boolean shuffleModeEnabled) { + verifyApplicationThread(); + player.setShuffleModeEnabled(shuffleModeEnabled); + } + + @Override + public boolean getShuffleModeEnabled() { + verifyApplicationThread(); + return player.getShuffleModeEnabled(); + } + + @Override + public boolean isLoading() { + verifyApplicationThread(); + return player.isLoading(); + } + + @Override + public void seekTo(int windowIndex, long positionMs) { + verifyApplicationThread(); + analyticsCollector.notifySeekStarted(); + player.seekTo(windowIndex, positionMs); + } + + @Override + public void setPlaybackParameters(@Nullable PlaybackParameters playbackParameters) { + verifyApplicationThread(); + player.setPlaybackParameters(playbackParameters); + } + + @Override + public PlaybackParameters getPlaybackParameters() { + verifyApplicationThread(); + return player.getPlaybackParameters(); + } + + @Override + public void setSeekParameters(@Nullable SeekParameters seekParameters) { + verifyApplicationThread(); + player.setSeekParameters(seekParameters); + } + + @Override + public SeekParameters getSeekParameters() { + verifyApplicationThread(); + return player.getSeekParameters(); + } + + @Override + public void setForegroundMode(boolean foregroundMode) { + player.setForegroundMode(foregroundMode); + } + + @Override + public void stop(boolean reset) { + verifyApplicationThread(); + audioFocusManager.updateAudioFocus(getPlayWhenReady(), Player.STATE_IDLE); + player.stop(reset); + if (mediaSource != null) { + mediaSource.removeEventListener(analyticsCollector); + analyticsCollector.resetForNewMediaSource(); + if (reset) { + mediaSource = null; + } + } + currentCues = Collections.emptyList(); + } + + @Override + public void release() { + verifyApplicationThread(); + audioBecomingNoisyManager.setEnabled(false); + wakeLockManager.setStayAwake(false); + wifiLockManager.setStayAwake(false); + audioFocusManager.release(); + player.release(); + removeSurfaceCallbacks(); + if (surface != null) { + if (ownsSurface) { + surface.release(); + } + surface = null; + } + if (mediaSource != null) { + mediaSource.removeEventListener(analyticsCollector); + mediaSource = null; + } + if (isPriorityTaskManagerRegistered) { + Assertions.checkNotNull(priorityTaskManager).remove(C.PRIORITY_PLAYBACK); + isPriorityTaskManagerRegistered = false; + } + bandwidthMeter.removeEventListener(analyticsCollector); + currentCues = Collections.emptyList(); + playerReleased = true; + } + + @Override + public PlayerMessage createMessage(PlayerMessage.Target target) { + verifyApplicationThread(); + return player.createMessage(target); + } + + @Override + public int getRendererCount() { + verifyApplicationThread(); + return player.getRendererCount(); + } + + @Override + public int getRendererType(int index) { + verifyApplicationThread(); + return player.getRendererType(index); + } + + @Override + public TrackGroupArray getCurrentTrackGroups() { + verifyApplicationThread(); + return player.getCurrentTrackGroups(); + } + + @Override + public TrackSelectionArray getCurrentTrackSelections() { + verifyApplicationThread(); + return player.getCurrentTrackSelections(); + } + + @Override + public Timeline getCurrentTimeline() { + verifyApplicationThread(); + return player.getCurrentTimeline(); + } + + @Override + public int getCurrentPeriodIndex() { + verifyApplicationThread(); + return player.getCurrentPeriodIndex(); + } + + @Override + public int getCurrentWindowIndex() { + verifyApplicationThread(); + return player.getCurrentWindowIndex(); + } + + @Override + public long getDuration() { + verifyApplicationThread(); + return player.getDuration(); + } + + @Override + public long getCurrentPosition() { + verifyApplicationThread(); + return player.getCurrentPosition(); + } + + @Override + public long getBufferedPosition() { + verifyApplicationThread(); + return player.getBufferedPosition(); + } + + @Override + public long getTotalBufferedDuration() { + verifyApplicationThread(); + return player.getTotalBufferedDuration(); + } + + @Override + public boolean isPlayingAd() { + verifyApplicationThread(); + return player.isPlayingAd(); + } + + @Override + public int getCurrentAdGroupIndex() { + verifyApplicationThread(); + return player.getCurrentAdGroupIndex(); + } + + @Override + public int getCurrentAdIndexInAdGroup() { + verifyApplicationThread(); + return player.getCurrentAdIndexInAdGroup(); + } + + @Override + public long getContentPosition() { + verifyApplicationThread(); + return player.getContentPosition(); + } + + @Override + public long getContentBufferedPosition() { + verifyApplicationThread(); + return player.getContentBufferedPosition(); + } + + /** + * Sets whether the player should use a {@link android.os.PowerManager.WakeLock} to ensure the + * device stays awake for playback, even when the screen is off. + * + *

Enabling this feature requires the {@link android.Manifest.permission#WAKE_LOCK} permission. + * It should be used together with a foreground {@link android.app.Service} for use cases where + * playback can occur when the screen is off (e.g. background audio playback). It is not useful if + * the screen will always be on during playback (e.g. foreground video playback). + * + *

This feature is not enabled by default. If enabled, a WakeLock is held whenever the player + * is in the {@link #STATE_READY READY} or {@link #STATE_BUFFERING BUFFERING} states with {@code + * playWhenReady = true}. + * + * @param handleWakeLock Whether the player should use a {@link android.os.PowerManager.WakeLock} + * to ensure the device stays awake for playback, even when the screen is off. + * @deprecated Use {@link #setWakeMode(int)} instead. + */ + @Deprecated + public void setHandleWakeLock(boolean handleWakeLock) { + setWakeMode(handleWakeLock ? C.WAKE_MODE_LOCAL : C.WAKE_MODE_NONE); + } + + /** + * Sets how the player should keep the device awake for playback when the screen is off. + * + *

Enabling this feature requires the {@link android.Manifest.permission#WAKE_LOCK} permission. + * It should be used together with a foreground {@link android.app.Service} for use cases where + * playback occurs and the screen is off (e.g. background audio playback). It is not useful when + * the screen will be kept on during playback (e.g. foreground video playback). + * + *

When enabled, the locks ({@link android.os.PowerManager.WakeLock} / {@link + * android.net.wifi.WifiManager.WifiLock}) will be held whenever the player is in the {@link + * #STATE_READY} or {@link #STATE_BUFFERING} states with {@code playWhenReady = true}. The locks + * held depends on the specified {@link C.WakeMode}. + * + * @param wakeMode The {@link C.WakeMode} option to keep the device awake during playback. + */ + public void setWakeMode(@C.WakeMode int wakeMode) { + switch (wakeMode) { + case C.WAKE_MODE_NONE: + wakeLockManager.setEnabled(false); + wifiLockManager.setEnabled(false); + break; + case C.WAKE_MODE_LOCAL: + wakeLockManager.setEnabled(true); + wifiLockManager.setEnabled(false); + break; + case C.WAKE_MODE_NETWORK: + wakeLockManager.setEnabled(true); + wifiLockManager.setEnabled(true); + break; + default: + break; + } + } + + // Internal methods. + + private void removeSurfaceCallbacks() { + if (textureView != null) { + if (textureView.getSurfaceTextureListener() != componentListener) { + Log.w(TAG, "SurfaceTextureListener already unset or replaced."); + } else { + textureView.setSurfaceTextureListener(null); + } + textureView = null; + } + if (surfaceHolder != null) { + surfaceHolder.removeCallback(componentListener); + surfaceHolder = null; + } + } + + private void setVideoSurfaceInternal(@Nullable Surface surface, boolean ownsSurface) { + // Note: We don't turn this method into a no-op if the surface is being replaced with itself + // so as to ensure onRenderedFirstFrame callbacks are still called in this case. + List messages = new ArrayList<>(); + for (Renderer renderer : renderers) { + if (renderer.getTrackType() == C.TRACK_TYPE_VIDEO) { + messages.add( + player.createMessage(renderer).setType(C.MSG_SET_SURFACE).setPayload(surface).send()); + } + } + if (this.surface != null && this.surface != surface) { + // We're replacing a surface. Block to ensure that it's not accessed after the method returns. + try { + for (PlayerMessage message : messages) { + message.blockUntilDelivered(); + } + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + } + // If we created the previous surface, we are responsible for releasing it. + if (this.ownsSurface) { + this.surface.release(); + } + } + this.surface = surface; + this.ownsSurface = ownsSurface; + } + + private void setVideoDecoderOutputBufferRendererInternal( + @Nullable VideoDecoderOutputBufferRenderer videoDecoderOutputBufferRenderer) { + for (Renderer renderer : renderers) { + if (renderer.getTrackType() == C.TRACK_TYPE_VIDEO) { + player + .createMessage(renderer) + .setType(C.MSG_SET_VIDEO_DECODER_OUTPUT_BUFFER_RENDERER) + .setPayload(videoDecoderOutputBufferRenderer) + .send(); + } + } + this.videoDecoderOutputBufferRenderer = videoDecoderOutputBufferRenderer; + } + + private void maybeNotifySurfaceSizeChanged(int width, int height) { + if (width != surfaceWidth || height != surfaceHeight) { + surfaceWidth = width; + surfaceHeight = height; + for (org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener videoListener : videoListeners) { + videoListener.onSurfaceSizeChanged(width, height); + } + } + } + + private void sendVolumeToRenderers() { + float scaledVolume = audioVolume * audioFocusManager.getVolumeMultiplier(); + for (Renderer renderer : renderers) { + if (renderer.getTrackType() == C.TRACK_TYPE_AUDIO) { + player.createMessage(renderer).setType(C.MSG_SET_VOLUME).setPayload(scaledVolume).send(); + } + } + } + + private void updatePlayWhenReady( + boolean playWhenReady, @AudioFocusManager.PlayerCommand int playerCommand) { + playWhenReady = playWhenReady && playerCommand != AudioFocusManager.PLAYER_COMMAND_DO_NOT_PLAY; + @PlaybackSuppressionReason + int playbackSuppressionReason = + playWhenReady && playerCommand != AudioFocusManager.PLAYER_COMMAND_PLAY_WHEN_READY + ? Player.PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS + : Player.PLAYBACK_SUPPRESSION_REASON_NONE; + player.setPlayWhenReady(playWhenReady, playbackSuppressionReason); + } + + private void verifyApplicationThread() { + if (Looper.myLooper() != getApplicationLooper()) { + Log.w( + TAG, + "Player is accessed on the wrong thread. See " + + "https://exoplayer.dev/issues/player-accessed-on-wrong-thread", + hasNotifiedFullWrongThreadWarning ? null : new IllegalStateException()); + hasNotifiedFullWrongThreadWarning = true; + } + } + + private void updateWakeAndWifiLock() { + @State int playbackState = getPlaybackState(); + switch (playbackState) { + case Player.STATE_READY: + case Player.STATE_BUFFERING: + wakeLockManager.setStayAwake(getPlayWhenReady()); + wifiLockManager.setStayAwake(getPlayWhenReady()); + break; + case Player.STATE_ENDED: + case Player.STATE_IDLE: + wakeLockManager.setStayAwake(false); + wifiLockManager.setStayAwake(false); + break; + default: + throw new IllegalStateException(); + } + } + + private final class ComponentListener + implements VideoRendererEventListener, + AudioRendererEventListener, + TextOutput, + MetadataOutput, + SurfaceHolder.Callback, + TextureView.SurfaceTextureListener, + AudioFocusManager.PlayerControl, + AudioBecomingNoisyManager.EventListener, + Player.EventListener { + + // VideoRendererEventListener implementation + + @Override + public void onVideoEnabled(DecoderCounters counters) { + videoDecoderCounters = counters; + for (VideoRendererEventListener videoDebugListener : videoDebugListeners) { + videoDebugListener.onVideoEnabled(counters); + } + } + + @Override + public void onVideoDecoderInitialized( + String decoderName, long initializedTimestampMs, long initializationDurationMs) { + for (VideoRendererEventListener videoDebugListener : videoDebugListeners) { + videoDebugListener.onVideoDecoderInitialized( + decoderName, initializedTimestampMs, initializationDurationMs); + } + } + + @Override + public void onVideoInputFormatChanged(Format format) { + videoFormat = format; + for (VideoRendererEventListener videoDebugListener : videoDebugListeners) { + videoDebugListener.onVideoInputFormatChanged(format); + } + } + + @Override + public void onDroppedFrames(int count, long elapsed) { + for (VideoRendererEventListener videoDebugListener : videoDebugListeners) { + videoDebugListener.onDroppedFrames(count, elapsed); + } + } + + @Override + public void onVideoSizeChanged( + int width, int height, int unappliedRotationDegrees, float pixelWidthHeightRatio) { + for (org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener videoListener : videoListeners) { + // Prevent duplicate notification if a listener is both a VideoRendererEventListener and + // a VideoListener, as they have the same method signature. + if (!videoDebugListeners.contains(videoListener)) { + videoListener.onVideoSizeChanged( + width, height, unappliedRotationDegrees, pixelWidthHeightRatio); + } + } + for (VideoRendererEventListener videoDebugListener : videoDebugListeners) { + videoDebugListener.onVideoSizeChanged( + width, height, unappliedRotationDegrees, pixelWidthHeightRatio); + } + } + + @Override + public void onRenderedFirstFrame(Surface surface) { + if (SimpleExoPlayer.this.surface == surface) { + for (org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener videoListener : videoListeners) { + videoListener.onRenderedFirstFrame(); + } + } + for (VideoRendererEventListener videoDebugListener : videoDebugListeners) { + videoDebugListener.onRenderedFirstFrame(surface); + } + } + + @Override + public void onVideoDisabled(DecoderCounters counters) { + for (VideoRendererEventListener videoDebugListener : videoDebugListeners) { + videoDebugListener.onVideoDisabled(counters); + } + videoFormat = null; + videoDecoderCounters = null; + } + + // AudioRendererEventListener implementation + + @Override + public void onAudioEnabled(DecoderCounters counters) { + audioDecoderCounters = counters; + for (AudioRendererEventListener audioDebugListener : audioDebugListeners) { + audioDebugListener.onAudioEnabled(counters); + } + } + + @Override + public void onAudioSessionId(int sessionId) { + if (audioSessionId == sessionId) { + return; + } + audioSessionId = sessionId; + for (AudioListener audioListener : audioListeners) { + // Prevent duplicate notification if a listener is both a AudioRendererEventListener and + // a AudioListener, as they have the same method signature. + if (!audioDebugListeners.contains(audioListener)) { + audioListener.onAudioSessionId(sessionId); + } + } + for (AudioRendererEventListener audioDebugListener : audioDebugListeners) { + audioDebugListener.onAudioSessionId(sessionId); + } + } + + @Override + public void onAudioDecoderInitialized( + String decoderName, long initializedTimestampMs, long initializationDurationMs) { + for (AudioRendererEventListener audioDebugListener : audioDebugListeners) { + audioDebugListener.onAudioDecoderInitialized( + decoderName, initializedTimestampMs, initializationDurationMs); + } + } + + @Override + public void onAudioInputFormatChanged(Format format) { + audioFormat = format; + for (AudioRendererEventListener audioDebugListener : audioDebugListeners) { + audioDebugListener.onAudioInputFormatChanged(format); + } + } + + @Override + public void onAudioSinkUnderrun( + int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs) { + for (AudioRendererEventListener audioDebugListener : audioDebugListeners) { + audioDebugListener.onAudioSinkUnderrun(bufferSize, bufferSizeMs, elapsedSinceLastFeedMs); + } + } + + @Override + public void onAudioDisabled(DecoderCounters counters) { + for (AudioRendererEventListener audioDebugListener : audioDebugListeners) { + audioDebugListener.onAudioDisabled(counters); + } + audioFormat = null; + audioDecoderCounters = null; + audioSessionId = C.AUDIO_SESSION_ID_UNSET; + } + + // TextOutput implementation + + @Override + public void onCues(List cues) { + currentCues = cues; + for (TextOutput textOutput : textOutputs) { + textOutput.onCues(cues); + } + } + + // MetadataOutput implementation + + @Override + public void onMetadata(Metadata metadata) { + for (MetadataOutput metadataOutput : metadataOutputs) { + metadataOutput.onMetadata(metadata); + } + } + + // SurfaceHolder.Callback implementation + + @Override + public void surfaceCreated(SurfaceHolder holder) { + setVideoSurfaceInternal(holder.getSurface(), false); + } + + @Override + public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { + maybeNotifySurfaceSizeChanged(width, height); + } + + @Override + public void surfaceDestroyed(SurfaceHolder holder) { + setVideoSurfaceInternal(/* surface= */ null, /* ownsSurface= */ false); + maybeNotifySurfaceSizeChanged(/* width= */ 0, /* height= */ 0); + } + + // TextureView.SurfaceTextureListener implementation + + @Override + public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width, int height) { + setVideoSurfaceInternal(new Surface(surfaceTexture), /* ownsSurface= */ true); + maybeNotifySurfaceSizeChanged(width, height); + } + + @Override + public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, int width, int height) { + maybeNotifySurfaceSizeChanged(width, height); + } + + @Override + public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) { + setVideoSurfaceInternal(/* surface= */ null, /* ownsSurface= */ true); + maybeNotifySurfaceSizeChanged(/* width= */ 0, /* height= */ 0); + return true; + } + + @Override + public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) { + // Do nothing. + } + + // AudioFocusManager.PlayerControl implementation + + @Override + public void setVolumeMultiplier(float volumeMultiplier) { + sendVolumeToRenderers(); + } + + @Override + public void executePlayerCommand(@AudioFocusManager.PlayerCommand int playerCommand) { + updatePlayWhenReady(getPlayWhenReady(), playerCommand); + } + + // AudioBecomingNoisyManager.EventListener implementation. + + @Override + public void onAudioBecomingNoisy() { + setPlayWhenReady(false); + } + + // Player.EventListener implementation. + + @Override + public void onLoadingChanged(boolean isLoading) { + if (priorityTaskManager != null) { + if (isLoading && !isPriorityTaskManagerRegistered) { + priorityTaskManager.add(C.PRIORITY_PLAYBACK); + isPriorityTaskManagerRegistered = true; + } else if (!isLoading && isPriorityTaskManagerRegistered) { + priorityTaskManager.remove(C.PRIORITY_PLAYBACK); + isPriorityTaskManagerRegistered = false; + } + } + } + + @Override + public void onPlayerStateChanged(boolean playWhenReady, @State int playbackState) { + updateWakeAndWifiLock(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Timeline.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Timeline.java new file mode 100644 index 0000000000..c9e3d16ff7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/Timeline.java @@ -0,0 +1,837 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ads.AdPlaybackState; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * A flexible representation of the structure of media. A timeline is able to represent the + * structure of a wide variety of media, from simple cases like a single media file through to + * complex compositions of media such as playlists and streams with inserted ads. Instances are + * immutable. For cases where media is changing dynamically (e.g. live streams), a timeline provides + * a snapshot of the current state. + * + *

A timeline consists of {@link Window Windows} and {@link Period Periods}. + * + *

+ * + *

The following examples illustrate timelines for various use cases. + * + *

Single media file or on-demand stream

+ * + *

Example timeline for a + * single file A timeline for a single media file or on-demand stream consists of a single period + * and window. The window spans the whole period, indicating that all parts of the media are + * available for playback. The window's default position is typically at the start of the period + * (indicated by the black dot in the figure above). + * + *

Playlist of media files or on-demand streams

+ * + *

Example timeline for a + * playlist of files A timeline for a playlist of media files or on-demand streams consists of + * multiple periods, each with its own window. Each window spans the whole of the corresponding + * period, and typically has a default position at the start of the period. The properties of the + * periods and windows (e.g. their durations and whether the window is seekable) will often only + * become known when the player starts buffering the corresponding file or stream. + * + *

Live stream with limited availability

+ * + *

Example timeline for + * a live stream with limited availability A timeline for a live stream consists of a period whose + * duration is unknown, since it's continually extending as more content is broadcast. If content + * only remains available for a limited period of time then the window may start at a non-zero + * position, defining the region of content that can still be played. The window will have {@link + * Window#isLive} set to true to indicate it's a live stream and {@link Window#isDynamic} set to + * true as long as we expect changes to the live window. Its default position is typically near to + * the live edge (indicated by the black dot in the figure above). + * + *

Live stream with indefinite availability

+ * + *

Example timeline + * for a live stream with indefinite availability A timeline for a live stream with indefinite + * availability is similar to the Live stream with limited availability + * case, except that the window starts at the beginning of the period to indicate that all of the + * previously broadcast content can still be played. + * + *

Live stream with multiple periods

+ * + *

Example timeline + * for a live stream with multiple periods This case arises when a live stream is explicitly + * divided into separate periods, for example at content boundaries. This case is similar to the Live stream with limited availability case, except that the window may + * span more than one period. Multiple periods are also possible in the indefinite availability + * case. + * + *

On-demand stream followed by live stream

+ * + *

Example timeline for an + * on-demand stream followed by a live stream This case is the concatenation of the Single media file or on-demand stream and Live + * stream with multiple periods cases. When playback of the on-demand stream ends, playback of + * the live stream will start from its default position near the live edge. + * + *

On-demand stream with mid-roll ads

+ * + *

Example + * timeline for an on-demand stream with mid-roll ad groups This case includes mid-roll ad groups, + * which are defined as part of the timeline's single period. The period can be queried for + * information about the ad groups and the ads they contain. + */ +public abstract class Timeline { + + /** + * Holds information about a window in a {@link Timeline}. A window usually corresponds to one + * playlist item and defines a region of media currently available for playback along with + * additional information such as whether seeking is supported within the window. The figure below + * shows some of the information defined by a window, as well as how this information relates to + * corresponding {@link Period Periods} in the timeline. + * + *

Information defined by a + * timeline window + */ + public static final class Window { + + /** + * A {@link #uid} for a window that must be used for single-window {@link Timeline Timelines}. + */ + public static final Object SINGLE_WINDOW_UID = new Object(); + + /** + * A unique identifier for the window. Single-window {@link Timeline Timelines} must use {@link + * #SINGLE_WINDOW_UID}. + */ + public Object uid; + + /** A tag for the window. Not necessarily unique. */ + @Nullable public Object tag; + + /** The manifest of the window. May be {@code null}. */ + @Nullable public Object manifest; + + /** + * The start time of the presentation to which this window belongs in milliseconds since the + * epoch, or {@link C#TIME_UNSET} if unknown or not applicable. For informational purposes only. + */ + public long presentationStartTimeMs; + + /** + * The window's start time in milliseconds since the epoch, or {@link C#TIME_UNSET} if unknown + * or not applicable. For informational purposes only. + */ + public long windowStartTimeMs; + + /** + * Whether it's possible to seek within this window. + */ + public boolean isSeekable; + + // TODO: Split this to better describe which parts of the window might change. For example it + // should be possible to individually determine whether the start and end positions of the + // window may change relative to the underlying periods. For an example of where it's useful to + // know that the end position is fixed whilst the start position may still change, see: + // https://github.com/google/ExoPlayer/issues/4780. + /** Whether this window may change when the timeline is updated. */ + public boolean isDynamic; + + /** + * Whether the media in this window is live. For informational purposes only. + * + *

Check {@link #isDynamic} to know whether this window may still change. + */ + public boolean isLive; + + /** The index of the first period that belongs to this window. */ + public int firstPeriodIndex; + + /** + * The index of the last period that belongs to this window. + */ + public int lastPeriodIndex; + + /** + * The default position relative to the start of the window at which to begin playback, in + * microseconds. May be {@link C#TIME_UNSET} if and only if the window was populated with a + * non-zero default position projection, and if the specified projection cannot be performed + * whilst remaining within the bounds of the window. + */ + public long defaultPositionUs; + + /** + * The duration of this window in microseconds, or {@link C#TIME_UNSET} if unknown. + */ + public long durationUs; + + /** + * The position of the start of this window relative to the start of the first period belonging + * to it, in microseconds. + */ + public long positionInFirstPeriodUs; + + /** Creates window. */ + public Window() { + uid = SINGLE_WINDOW_UID; + } + + /** Sets the data held by this window. */ + public Window set( + Object uid, + @Nullable Object tag, + @Nullable Object manifest, + long presentationStartTimeMs, + long windowStartTimeMs, + boolean isSeekable, + boolean isDynamic, + boolean isLive, + long defaultPositionUs, + long durationUs, + int firstPeriodIndex, + int lastPeriodIndex, + long positionInFirstPeriodUs) { + this.uid = uid; + this.tag = tag; + this.manifest = manifest; + this.presentationStartTimeMs = presentationStartTimeMs; + this.windowStartTimeMs = windowStartTimeMs; + this.isSeekable = isSeekable; + this.isDynamic = isDynamic; + this.isLive = isLive; + this.defaultPositionUs = defaultPositionUs; + this.durationUs = durationUs; + this.firstPeriodIndex = firstPeriodIndex; + this.lastPeriodIndex = lastPeriodIndex; + this.positionInFirstPeriodUs = positionInFirstPeriodUs; + return this; + } + + /** + * Returns the default position relative to the start of the window at which to begin playback, + * in milliseconds. May be {@link C#TIME_UNSET} if and only if the window was populated with a + * non-zero default position projection, and if the specified projection cannot be performed + * whilst remaining within the bounds of the window. + */ + public long getDefaultPositionMs() { + return C.usToMs(defaultPositionUs); + } + + /** + * Returns the default position relative to the start of the window at which to begin playback, + * in microseconds. May be {@link C#TIME_UNSET} if and only if the window was populated with a + * non-zero default position projection, and if the specified projection cannot be performed + * whilst remaining within the bounds of the window. + */ + public long getDefaultPositionUs() { + return defaultPositionUs; + } + + /** + * Returns the duration of the window in milliseconds, or {@link C#TIME_UNSET} if unknown. + */ + public long getDurationMs() { + return C.usToMs(durationUs); + } + + /** + * Returns the duration of this window in microseconds, or {@link C#TIME_UNSET} if unknown. + */ + public long getDurationUs() { + return durationUs; + } + + /** + * Returns the position of the start of this window relative to the start of the first period + * belonging to it, in milliseconds. + */ + public long getPositionInFirstPeriodMs() { + return C.usToMs(positionInFirstPeriodUs); + } + + /** + * Returns the position of the start of this window relative to the start of the first period + * belonging to it, in microseconds. + */ + public long getPositionInFirstPeriodUs() { + return positionInFirstPeriodUs; + } + + } + + /** + * Holds information about a period in a {@link Timeline}. A period defines a single logical piece + * of media, for example a media file. It may also define groups of ads inserted into the media, + * along with information about whether those ads have been loaded and played. + * + *

The figure below shows some of the information defined by a period, as well as how this + * information relates to a corresponding {@link Window} in the timeline. + * + *

Information defined by a + * period + */ + public static final class Period { + + /** + * An identifier for the period. Not necessarily unique. May be null if the ids of the period + * are not required. + */ + @Nullable public Object id; + + /** + * A unique identifier for the period. May be null if the ids of the period are not required. + */ + @Nullable public Object uid; + + /** + * The index of the window to which this period belongs. + */ + public int windowIndex; + + /** + * The duration of this period in microseconds, or {@link C#TIME_UNSET} if unknown. + */ + public long durationUs; + + private long positionInWindowUs; + private AdPlaybackState adPlaybackState; + + /** Creates a new instance with no ad playback state. */ + public Period() { + adPlaybackState = AdPlaybackState.NONE; + } + + /** + * Sets the data held by this period. + * + * @param id An identifier for the period. Not necessarily unique. May be null if the ids of the + * period are not required. + * @param uid A unique identifier for the period. May be null if the ids of the period are not + * required. + * @param windowIndex The index of the window to which this period belongs. + * @param durationUs The duration of this period in microseconds, or {@link C#TIME_UNSET} if + * unknown. + * @param positionInWindowUs The position of the start of this period relative to the start of + * the window to which it belongs, in milliseconds. May be negative if the start of the + * period is not within the window. + * @return This period, for convenience. + */ + public Period set( + @Nullable Object id, + @Nullable Object uid, + int windowIndex, + long durationUs, + long positionInWindowUs) { + return set(id, uid, windowIndex, durationUs, positionInWindowUs, AdPlaybackState.NONE); + } + + /** + * Sets the data held by this period. + * + * @param id An identifier for the period. Not necessarily unique. May be null if the ids of the + * period are not required. + * @param uid A unique identifier for the period. May be null if the ids of the period are not + * required. + * @param windowIndex The index of the window to which this period belongs. + * @param durationUs The duration of this period in microseconds, or {@link C#TIME_UNSET} if + * unknown. + * @param positionInWindowUs The position of the start of this period relative to the start of + * the window to which it belongs, in milliseconds. May be negative if the start of the + * period is not within the window. + * @param adPlaybackState The state of the period's ads, or {@link AdPlaybackState#NONE} if + * there are no ads. + * @return This period, for convenience. + */ + public Period set( + @Nullable Object id, + @Nullable Object uid, + int windowIndex, + long durationUs, + long positionInWindowUs, + AdPlaybackState adPlaybackState) { + this.id = id; + this.uid = uid; + this.windowIndex = windowIndex; + this.durationUs = durationUs; + this.positionInWindowUs = positionInWindowUs; + this.adPlaybackState = adPlaybackState; + return this; + } + + /** + * Returns the duration of the period in milliseconds, or {@link C#TIME_UNSET} if unknown. + */ + public long getDurationMs() { + return C.usToMs(durationUs); + } + + /** + * Returns the duration of this period in microseconds, or {@link C#TIME_UNSET} if unknown. + */ + public long getDurationUs() { + return durationUs; + } + + /** + * Returns the position of the start of this period relative to the start of the window to which + * it belongs, in milliseconds. May be negative if the start of the period is not within the + * window. + */ + public long getPositionInWindowMs() { + return C.usToMs(positionInWindowUs); + } + + /** + * Returns the position of the start of this period relative to the start of the window to which + * it belongs, in microseconds. May be negative if the start of the period is not within the + * window. + */ + public long getPositionInWindowUs() { + return positionInWindowUs; + } + + /** + * Returns the number of ad groups in the period. + */ + public int getAdGroupCount() { + return adPlaybackState.adGroupCount; + } + + /** + * Returns the time of the ad group at index {@code adGroupIndex} in the period, in + * microseconds. + * + * @param adGroupIndex The ad group index. + * @return The time of the ad group at the index, in microseconds, or {@link + * C#TIME_END_OF_SOURCE} for a post-roll ad group. + */ + public long getAdGroupTimeUs(int adGroupIndex) { + return adPlaybackState.adGroupTimesUs[adGroupIndex]; + } + + /** + * Returns the index of the first ad in the specified ad group that should be played, or the + * number of ads in the ad group if no ads should be played. + * + * @param adGroupIndex The ad group index. + * @return The index of the first ad that should be played, or the number of ads in the ad group + * if no ads should be played. + */ + public int getFirstAdIndexToPlay(int adGroupIndex) { + return adPlaybackState.adGroups[adGroupIndex].getFirstAdIndexToPlay(); + } + + /** + * Returns the index of the next ad in the specified ad group that should be played after + * playing {@code adIndexInAdGroup}, or the number of ads in the ad group if no later ads should + * be played. + * + * @param adGroupIndex The ad group index. + * @param lastPlayedAdIndex The last played ad index in the ad group. + * @return The index of the next ad that should be played, or the number of ads in the ad group + * if the ad group does not have any ads remaining to play. + */ + public int getNextAdIndexToPlay(int adGroupIndex, int lastPlayedAdIndex) { + return adPlaybackState.adGroups[adGroupIndex].getNextAdIndexToPlay(lastPlayedAdIndex); + } + + /** + * Returns whether the ad group at index {@code adGroupIndex} has been played. + * + * @param adGroupIndex The ad group index. + * @return Whether the ad group at index {@code adGroupIndex} has been played. + */ + public boolean hasPlayedAdGroup(int adGroupIndex) { + return !adPlaybackState.adGroups[adGroupIndex].hasUnplayedAds(); + } + + /** + * Returns the index of the ad group at or before {@code positionUs}, if that ad group is + * unplayed. Returns {@link C#INDEX_UNSET} if the ad group at or before {@code positionUs} has + * no ads remaining to be played, or if there is no such ad group. + * + * @param positionUs The position at or before which to find an ad group, in microseconds. + * @return The index of the ad group, or {@link C#INDEX_UNSET}. + */ + public int getAdGroupIndexForPositionUs(long positionUs) { + return adPlaybackState.getAdGroupIndexForPositionUs(positionUs); + } + + /** + * Returns the index of the next ad group after {@code positionUs} that has ads remaining to be + * played. Returns {@link C#INDEX_UNSET} if there is no such ad group. + * + * @param positionUs The position after which to find an ad group, in microseconds. + * @return The index of the ad group, or {@link C#INDEX_UNSET}. + */ + public int getAdGroupIndexAfterPositionUs(long positionUs) { + return adPlaybackState.getAdGroupIndexAfterPositionUs(positionUs, durationUs); + } + + /** + * Returns the number of ads in the ad group at index {@code adGroupIndex}, or + * {@link C#LENGTH_UNSET} if not yet known. + * + * @param adGroupIndex The ad group index. + * @return The number of ads in the ad group, or {@link C#LENGTH_UNSET} if not yet known. + */ + public int getAdCountInAdGroup(int adGroupIndex) { + return adPlaybackState.adGroups[adGroupIndex].count; + } + + /** + * Returns whether the URL for the specified ad is known. + * + * @param adGroupIndex The ad group index. + * @param adIndexInAdGroup The ad index in the ad group. + * @return Whether the URL for the specified ad is known. + */ + public boolean isAdAvailable(int adGroupIndex, int adIndexInAdGroup) { + AdPlaybackState.AdGroup adGroup = adPlaybackState.adGroups[adGroupIndex]; + return adGroup.count != C.LENGTH_UNSET + && adGroup.states[adIndexInAdGroup] != AdPlaybackState.AD_STATE_UNAVAILABLE; + } + + /** + * Returns the duration of the ad at index {@code adIndexInAdGroup} in the ad group at + * {@code adGroupIndex}, in microseconds, or {@link C#TIME_UNSET} if not yet known. + * + * @param adGroupIndex The ad group index. + * @param adIndexInAdGroup The ad index in the ad group. + * @return The duration of the ad, or {@link C#TIME_UNSET} if not yet known. + */ + public long getAdDurationUs(int adGroupIndex, int adIndexInAdGroup) { + AdPlaybackState.AdGroup adGroup = adPlaybackState.adGroups[adGroupIndex]; + return adGroup.count != C.LENGTH_UNSET ? adGroup.durationsUs[adIndexInAdGroup] : C.TIME_UNSET; + } + + /** + * Returns the position offset in the first unplayed ad at which to begin playback, in + * microseconds. + */ + public long getAdResumePositionUs() { + return adPlaybackState.adResumePositionUs; + } + + } + + /** An empty timeline. */ + public static final Timeline EMPTY = + new Timeline() { + + @Override + public int getWindowCount() { + return 0; + } + + @Override + public Window getWindow(int windowIndex, Window window, long defaultPositionProjectionUs) { + throw new IndexOutOfBoundsException(); + } + + @Override + public int getPeriodCount() { + return 0; + } + + @Override + public Period getPeriod(int periodIndex, Period period, boolean setIds) { + throw new IndexOutOfBoundsException(); + } + + @Override + public int getIndexOfPeriod(Object uid) { + return C.INDEX_UNSET; + } + + @Override + public Object getUidOfPeriod(int periodIndex) { + throw new IndexOutOfBoundsException(); + } + }; + + /** + * Returns whether the timeline is empty. + */ + public final boolean isEmpty() { + return getWindowCount() == 0; + } + + /** + * Returns the number of windows in the timeline. + */ + public abstract int getWindowCount(); + + /** + * Returns the index of the window after the window at index {@code windowIndex} depending on the + * {@code repeatMode} and whether shuffling is enabled. + * + * @param windowIndex Index of a window in the timeline. + * @param repeatMode A repeat mode. + * @param shuffleModeEnabled Whether shuffling is enabled. + * @return The index of the next window, or {@link C#INDEX_UNSET} if this is the last window. + */ + public int getNextWindowIndex(int windowIndex, @Player.RepeatMode int repeatMode, + boolean shuffleModeEnabled) { + switch (repeatMode) { + case Player.REPEAT_MODE_OFF: + return windowIndex == getLastWindowIndex(shuffleModeEnabled) ? C.INDEX_UNSET + : windowIndex + 1; + case Player.REPEAT_MODE_ONE: + return windowIndex; + case Player.REPEAT_MODE_ALL: + return windowIndex == getLastWindowIndex(shuffleModeEnabled) + ? getFirstWindowIndex(shuffleModeEnabled) : windowIndex + 1; + default: + throw new IllegalStateException(); + } + } + + /** + * Returns the index of the window before the window at index {@code windowIndex} depending on the + * {@code repeatMode} and whether shuffling is enabled. + * + * @param windowIndex Index of a window in the timeline. + * @param repeatMode A repeat mode. + * @param shuffleModeEnabled Whether shuffling is enabled. + * @return The index of the previous window, or {@link C#INDEX_UNSET} if this is the first window. + */ + public int getPreviousWindowIndex(int windowIndex, @Player.RepeatMode int repeatMode, + boolean shuffleModeEnabled) { + switch (repeatMode) { + case Player.REPEAT_MODE_OFF: + return windowIndex == getFirstWindowIndex(shuffleModeEnabled) ? C.INDEX_UNSET + : windowIndex - 1; + case Player.REPEAT_MODE_ONE: + return windowIndex; + case Player.REPEAT_MODE_ALL: + return windowIndex == getFirstWindowIndex(shuffleModeEnabled) + ? getLastWindowIndex(shuffleModeEnabled) : windowIndex - 1; + default: + throw new IllegalStateException(); + } + } + + /** + * Returns the index of the last window in the playback order depending on whether shuffling is + * enabled. + * + * @param shuffleModeEnabled Whether shuffling is enabled. + * @return The index of the last window in the playback order, or {@link C#INDEX_UNSET} if the + * timeline is empty. + */ + public int getLastWindowIndex(boolean shuffleModeEnabled) { + return isEmpty() ? C.INDEX_UNSET : getWindowCount() - 1; + } + + /** + * Returns the index of the first window in the playback order depending on whether shuffling is + * enabled. + * + * @param shuffleModeEnabled Whether shuffling is enabled. + * @return The index of the first window in the playback order, or {@link C#INDEX_UNSET} if the + * timeline is empty. + */ + public int getFirstWindowIndex(boolean shuffleModeEnabled) { + return isEmpty() ? C.INDEX_UNSET : 0; + } + + /** + * Populates a {@link Window} with data for the window at the specified index. + * + * @param windowIndex The index of the window. + * @param window The {@link Window} to populate. Must not be null. + * @return The populated {@link Window}, for convenience. + */ + public final Window getWindow(int windowIndex, Window window) { + return getWindow(windowIndex, window, /* defaultPositionProjectionUs= */ 0); + } + + /** @deprecated Use {@link #getWindow(int, Window)} instead. Tags will always be set. */ + @Deprecated + public final Window getWindow(int windowIndex, Window window, boolean setTag) { + return getWindow(windowIndex, window, /* defaultPositionProjectionUs= */ 0); + } + + /** + * Populates a {@link Window} with data for the window at the specified index. + * + * @param windowIndex The index of the window. + * @param window The {@link Window} to populate. Must not be null. + * @param defaultPositionProjectionUs A duration into the future that the populated window's + * default start position should be projected. + * @return The populated {@link Window}, for convenience. + */ + public abstract Window getWindow( + int windowIndex, Window window, long defaultPositionProjectionUs); + + /** + * Returns the number of periods in the timeline. + */ + public abstract int getPeriodCount(); + + /** + * Returns the index of the period after the period at index {@code periodIndex} depending on the + * {@code repeatMode} and whether shuffling is enabled. + * + * @param periodIndex Index of a period in the timeline. + * @param period A {@link Period} to be used internally. Must not be null. + * @param window A {@link Window} to be used internally. Must not be null. + * @param repeatMode A repeat mode. + * @param shuffleModeEnabled Whether shuffling is enabled. + * @return The index of the next period, or {@link C#INDEX_UNSET} if this is the last period. + */ + public final int getNextPeriodIndex(int periodIndex, Period period, Window window, + @Player.RepeatMode int repeatMode, boolean shuffleModeEnabled) { + int windowIndex = getPeriod(periodIndex, period).windowIndex; + if (getWindow(windowIndex, window).lastPeriodIndex == periodIndex) { + int nextWindowIndex = getNextWindowIndex(windowIndex, repeatMode, shuffleModeEnabled); + if (nextWindowIndex == C.INDEX_UNSET) { + return C.INDEX_UNSET; + } + return getWindow(nextWindowIndex, window).firstPeriodIndex; + } + return periodIndex + 1; + } + + /** + * Returns whether the given period is the last period of the timeline depending on the + * {@code repeatMode} and whether shuffling is enabled. + * + * @param periodIndex A period index. + * @param period A {@link Period} to be used internally. Must not be null. + * @param window A {@link Window} to be used internally. Must not be null. + * @param repeatMode A repeat mode. + * @param shuffleModeEnabled Whether shuffling is enabled. + * @return Whether the period of the given index is the last period of the timeline. + */ + public final boolean isLastPeriod(int periodIndex, Period period, Window window, + @Player.RepeatMode int repeatMode, boolean shuffleModeEnabled) { + return getNextPeriodIndex(periodIndex, period, window, repeatMode, shuffleModeEnabled) + == C.INDEX_UNSET; + } + + /** + * Calls {@link #getPeriodPosition(Window, Period, int, long, long)} with a zero default position + * projection. + */ + public final Pair getPeriodPosition( + Window window, Period period, int windowIndex, long windowPositionUs) { + return Assertions.checkNotNull( + getPeriodPosition( + window, period, windowIndex, windowPositionUs, /* defaultPositionProjectionUs= */ 0)); + } + + /** + * Converts (windowIndex, windowPositionUs) to the corresponding (periodUid, periodPositionUs). + * + * @param window A {@link Window} that may be overwritten. + * @param period A {@link Period} that may be overwritten. + * @param windowIndex The window index. + * @param windowPositionUs The window time, or {@link C#TIME_UNSET} to use the window's default + * start position. + * @param defaultPositionProjectionUs If {@code windowPositionUs} is {@link C#TIME_UNSET}, the + * duration into the future by which the window's position should be projected. + * @return The corresponding (periodUid, periodPositionUs), or null if {@code #windowPositionUs} + * is {@link C#TIME_UNSET}, {@code defaultPositionProjectionUs} is non-zero, and the window's + * position could not be projected by {@code defaultPositionProjectionUs}. + */ + @Nullable + public final Pair getPeriodPosition( + Window window, + Period period, + int windowIndex, + long windowPositionUs, + long defaultPositionProjectionUs) { + Assertions.checkIndex(windowIndex, 0, getWindowCount()); + getWindow(windowIndex, window, defaultPositionProjectionUs); + if (windowPositionUs == C.TIME_UNSET) { + windowPositionUs = window.getDefaultPositionUs(); + if (windowPositionUs == C.TIME_UNSET) { + return null; + } + } + int periodIndex = window.firstPeriodIndex; + long periodPositionUs = window.getPositionInFirstPeriodUs() + windowPositionUs; + long periodDurationUs = getPeriod(periodIndex, period, /* setIds= */ true).getDurationUs(); + while (periodDurationUs != C.TIME_UNSET && periodPositionUs >= periodDurationUs + && periodIndex < window.lastPeriodIndex) { + periodPositionUs -= periodDurationUs; + periodDurationUs = getPeriod(++periodIndex, period, /* setIds= */ true).getDurationUs(); + } + return Pair.create(Assertions.checkNotNull(period.uid), periodPositionUs); + } + + /** + * Populates a {@link Period} with data for the period with the specified unique identifier. + * + * @param periodUid The unique identifier of the period. + * @param period The {@link Period} to populate. Must not be null. + * @return The populated {@link Period}, for convenience. + */ + public Period getPeriodByUid(Object periodUid, Period period) { + return getPeriod(getIndexOfPeriod(periodUid), period, /* setIds= */ true); + } + + /** + * Populates a {@link Period} with data for the period at the specified index. {@link Period#id} + * and {@link Period#uid} will be set to null. + * + * @param periodIndex The index of the period. + * @param period The {@link Period} to populate. Must not be null. + * @return The populated {@link Period}, for convenience. + */ + public final Period getPeriod(int periodIndex, Period period) { + return getPeriod(periodIndex, period, false); + } + + /** + * Populates a {@link Period} with data for the period at the specified index. + * + * @param periodIndex The index of the period. + * @param period The {@link Period} to populate. Must not be null. + * @param setIds Whether {@link Period#id} and {@link Period#uid} should be populated. If false, + * the fields will be set to null. The caller should pass false for efficiency reasons unless + * the fields are required. + * @return The populated {@link Period}, for convenience. + */ + public abstract Period getPeriod(int periodIndex, Period period, boolean setIds); + + /** + * Returns the index of the period identified by its unique {@link Period#uid}, or {@link + * C#INDEX_UNSET} if the period is not in the timeline. + * + * @param uid A unique identifier for a period. + * @return The index of the period, or {@link C#INDEX_UNSET} if the period was not found. + */ + public abstract int getIndexOfPeriod(Object uid); + + /** + * Returns the unique id of the period identified by its index in the timeline. + * + * @param periodIndex The index of the period. + * @return The unique id of the period. + */ + public abstract Object getUidOfPeriod(int periodIndex); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/WakeLockManager.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/WakeLockManager.java new file mode 100644 index 0000000000..368eb8aa0d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/WakeLockManager.java @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.annotation.SuppressLint; +import android.content.Context; +import android.os.PowerManager; +import android.os.PowerManager.WakeLock; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; + +/** + * Handles a {@link WakeLock}. + * + *

The handling of wake locks requires the {@link android.Manifest.permission#WAKE_LOCK} + * permission. + */ +/* package */ final class WakeLockManager { + + private static final String TAG = "WakeLockManager"; + private static final String WAKE_LOCK_TAG = "ExoPlayer:WakeLockManager"; + + @Nullable private final PowerManager powerManager; + @Nullable private WakeLock wakeLock; + private boolean enabled; + private boolean stayAwake; + + public WakeLockManager(Context context) { + powerManager = + (PowerManager) context.getApplicationContext().getSystemService(Context.POWER_SERVICE); + } + + /** + * Sets whether to enable the acquiring and releasing of the {@link WakeLock}. + * + *

By default, wake lock handling is not enabled. Enabling this will acquire the wake lock if + * necessary. Disabling this will release the wake lock if it is held. + * + *

Enabling {@link WakeLock} requires the {@link android.Manifest.permission#WAKE_LOCK}. + * + * @param enabled True if the player should handle a {@link WakeLock}, false otherwise. + */ + public void setEnabled(boolean enabled) { + if (enabled) { + if (wakeLock == null) { + if (powerManager == null) { + Log.w(TAG, "PowerManager is null, therefore not creating the WakeLock."); + return; + } + wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, WAKE_LOCK_TAG); + wakeLock.setReferenceCounted(false); + } + } + + this.enabled = enabled; + updateWakeLock(); + } + + /** + * Sets whether to acquire or release the {@link WakeLock}. + * + *

Please note this method requires wake lock handling to be enabled through setEnabled(boolean + * enable) to actually have an impact on the {@link WakeLock}. + * + * @param stayAwake True if the player should acquire the {@link WakeLock}. False if the player + * should release. + */ + public void setStayAwake(boolean stayAwake) { + this.stayAwake = stayAwake; + updateWakeLock(); + } + + // WakelockTimeout suppressed because the time the wake lock is needed for is unknown (could be + // listening to radio with screen off for multiple hours), therefore we can not determine a + // reasonable timeout that would not affect the user. + @SuppressLint("WakelockTimeout") + private void updateWakeLock() { + if (wakeLock == null) { + return; + } + + if (enabled && stayAwake) { + wakeLock.acquire(); + } else { + wakeLock.release(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/WifiLockManager.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/WifiLockManager.java new file mode 100644 index 0000000000..1081dd39a8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/WifiLockManager.java @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2020 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import android.content.Context; +import android.net.wifi.WifiManager; +import android.net.wifi.WifiManager.WifiLock; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; + +/** + * Handles a {@link WifiLock} + * + *

The handling of wifi locks requires the {@link android.Manifest.permission#WAKE_LOCK} + * permission. + */ +/* package */ final class WifiLockManager { + + private static final String TAG = "WifiLockManager"; + private static final String WIFI_LOCK_TAG = "ExoPlayer:WifiLockManager"; + + @Nullable private final WifiManager wifiManager; + @Nullable private WifiLock wifiLock; + private boolean enabled; + private boolean stayAwake; + + public WifiLockManager(Context context) { + wifiManager = + (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE); + } + + /** + * Sets whether to enable the usage of a {@link WifiLock}. + * + *

By default, wifi lock handling is not enabled. Enabling will acquire the wifi lock if + * necessary. Disabling will release the wifi lock if held. + * + *

Enabling {@link WifiLock} requires the {@link android.Manifest.permission#WAKE_LOCK}. + * + * @param enabled True if the player should handle a {@link WifiLock}. + */ + public void setEnabled(boolean enabled) { + if (enabled && wifiLock == null) { + if (wifiManager == null) { + Log.w(TAG, "WifiManager is null, therefore not creating the WifiLock."); + return; + } + wifiLock = wifiManager.createWifiLock(WifiManager.WIFI_MODE_FULL_HIGH_PERF, WIFI_LOCK_TAG); + wifiLock.setReferenceCounted(false); + } + + this.enabled = enabled; + updateWifiLock(); + } + + /** + * Sets whether to acquire or release the {@link WifiLock}. + * + *

The wifi lock will not be acquired unless handling has been enabled through {@link + * #setEnabled(boolean)}. + * + * @param stayAwake True if the player should acquire the {@link WifiLock}. False if it should + * release. + */ + public void setStayAwake(boolean stayAwake) { + this.stayAwake = stayAwake; + updateWifiLock(); + } + + private void updateWifiLock() { + if (wifiLock == null) { + return; + } + + if (enabled && stayAwake) { + wifiLock.acquire(); + } else { + wifiLock.release(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/AnalyticsCollector.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/AnalyticsCollector.java new file mode 100644 index 0000000000..6bdb4c7727 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/AnalyticsCollector.java @@ -0,0 +1,881 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.analytics; + +import android.view.Surface; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.PlaybackSuppressionReason; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline.Period; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline.Window; +import org.mozilla.thirdparty.com.google.android.exoplayer2.analytics.AnalyticsListener.EventTime; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioRendererEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderCounters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DefaultDrmSessionEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Clock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoRendererEventListener; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Set; +import java.util.concurrent.CopyOnWriteArraySet; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; +import org.checkerframework.checker.nullness.qual.RequiresNonNull; + +/** + * Data collector which is able to forward analytics events to {@link AnalyticsListener}s by + * listening to all available ExoPlayer listeners. + */ +public class AnalyticsCollector + implements Player.EventListener, + MetadataOutput, + AudioRendererEventListener, + VideoRendererEventListener, + MediaSourceEventListener, + BandwidthMeter.EventListener, + DefaultDrmSessionEventListener, + VideoListener, + AudioListener { + + private final CopyOnWriteArraySet listeners; + private final Clock clock; + private final Window window; + private final MediaPeriodQueueTracker mediaPeriodQueueTracker; + + private @MonotonicNonNull Player player; + + /** + * Creates an analytics collector. + * + * @param clock A {@link Clock} used to generate timestamps. + */ + public AnalyticsCollector(Clock clock) { + this.clock = Assertions.checkNotNull(clock); + listeners = new CopyOnWriteArraySet<>(); + mediaPeriodQueueTracker = new MediaPeriodQueueTracker(); + window = new Window(); + } + + /** + * Adds a listener for analytics events. + * + * @param listener The listener to add. + */ + public void addListener(AnalyticsListener listener) { + listeners.add(listener); + } + + /** + * Removes a previously added analytics event listener. + * + * @param listener The listener to remove. + */ + public void removeListener(AnalyticsListener listener) { + listeners.remove(listener); + } + + /** + * Sets the player for which data will be collected. Must only be called if no player has been set + * yet or the current player is idle. + * + * @param player The {@link Player} for which data will be collected. + */ + public void setPlayer(Player player) { + Assertions.checkState( + this.player == null || mediaPeriodQueueTracker.mediaPeriodInfoQueue.isEmpty()); + this.player = Assertions.checkNotNull(player); + } + + // External events. + + /** + * Notify analytics collector that a seek operation will start. Should be called before the player + * adjusts its state and position to the seek. + */ + public final void notifySeekStarted() { + if (!mediaPeriodQueueTracker.isSeeking()) { + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + mediaPeriodQueueTracker.onSeekStarted(); + for (AnalyticsListener listener : listeners) { + listener.onSeekStarted(eventTime); + } + } + } + + /** + * Resets the analytics collector for a new media source. Should be called before the player is + * prepared with a new media source. + */ + public final void resetForNewMediaSource() { + // Copying the list is needed because onMediaPeriodReleased will modify the list. + List mediaPeriodInfos = + new ArrayList<>(mediaPeriodQueueTracker.mediaPeriodInfoQueue); + for (MediaPeriodInfo mediaPeriodInfo : mediaPeriodInfos) { + onMediaPeriodReleased(mediaPeriodInfo.windowIndex, mediaPeriodInfo.mediaPeriodId); + } + } + + // MetadataOutput implementation. + + @Override + public final void onMetadata(Metadata metadata) { + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onMetadata(eventTime, metadata); + } + } + + // AudioRendererEventListener implementation. + + @Override + public final void onAudioEnabled(DecoderCounters counters) { + // The renderers are only enabled after we changed the playing media period. + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDecoderEnabled(eventTime, C.TRACK_TYPE_AUDIO, counters); + } + } + + @Override + public final void onAudioDecoderInitialized( + String decoderName, long initializedTimestampMs, long initializationDurationMs) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDecoderInitialized( + eventTime, C.TRACK_TYPE_AUDIO, decoderName, initializationDurationMs); + } + } + + @Override + public final void onAudioInputFormatChanged(Format format) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDecoderInputFormatChanged(eventTime, C.TRACK_TYPE_AUDIO, format); + } + } + + @Override + public final void onAudioSinkUnderrun( + int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onAudioUnderrun(eventTime, bufferSize, bufferSizeMs, elapsedSinceLastFeedMs); + } + } + + @Override + public final void onAudioDisabled(DecoderCounters counters) { + // The renderers are disabled after we changed the playing media period on the playback thread + // but before this change is reported to the app thread. + EventTime eventTime = generateLastReportedPlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDecoderDisabled(eventTime, C.TRACK_TYPE_AUDIO, counters); + } + } + + // AudioListener implementation. + + @Override + public final void onAudioSessionId(int audioSessionId) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onAudioSessionId(eventTime, audioSessionId); + } + } + + @Override + public void onAudioAttributesChanged(AudioAttributes audioAttributes) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onAudioAttributesChanged(eventTime, audioAttributes); + } + } + + @Override + public void onVolumeChanged(float audioVolume) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onVolumeChanged(eventTime, audioVolume); + } + } + + // VideoRendererEventListener implementation. + + @Override + public final void onVideoEnabled(DecoderCounters counters) { + // The renderers are only enabled after we changed the playing media period. + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDecoderEnabled(eventTime, C.TRACK_TYPE_VIDEO, counters); + } + } + + @Override + public final void onVideoDecoderInitialized( + String decoderName, long initializedTimestampMs, long initializationDurationMs) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDecoderInitialized( + eventTime, C.TRACK_TYPE_VIDEO, decoderName, initializationDurationMs); + } + } + + @Override + public final void onVideoInputFormatChanged(Format format) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDecoderInputFormatChanged(eventTime, C.TRACK_TYPE_VIDEO, format); + } + } + + @Override + public final void onDroppedFrames(int count, long elapsedMs) { + EventTime eventTime = generateLastReportedPlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDroppedVideoFrames(eventTime, count, elapsedMs); + } + } + + @Override + public final void onVideoDisabled(DecoderCounters counters) { + // The renderers are disabled after we changed the playing media period on the playback thread + // but before this change is reported to the app thread. + EventTime eventTime = generateLastReportedPlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDecoderDisabled(eventTime, C.TRACK_TYPE_VIDEO, counters); + } + } + + @Override + public final void onRenderedFirstFrame(@Nullable Surface surface) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onRenderedFirstFrame(eventTime, surface); + } + } + + // VideoListener implementation. + + @Override + public final void onRenderedFirstFrame() { + // Do nothing. Already reported in VideoRendererEventListener.onRenderedFirstFrame. + } + + @Override + public final void onVideoSizeChanged( + int width, int height, int unappliedRotationDegrees, float pixelWidthHeightRatio) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onVideoSizeChanged( + eventTime, width, height, unappliedRotationDegrees, pixelWidthHeightRatio); + } + } + + @Override + public void onSurfaceSizeChanged(int width, int height) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onSurfaceSizeChanged(eventTime, width, height); + } + } + + // MediaSourceEventListener implementation. + + @Override + public final void onMediaPeriodCreated(int windowIndex, MediaPeriodId mediaPeriodId) { + mediaPeriodQueueTracker.onMediaPeriodCreated(windowIndex, mediaPeriodId); + EventTime eventTime = generateMediaPeriodEventTime(windowIndex, mediaPeriodId); + for (AnalyticsListener listener : listeners) { + listener.onMediaPeriodCreated(eventTime); + } + } + + @Override + public final void onMediaPeriodReleased(int windowIndex, MediaPeriodId mediaPeriodId) { + EventTime eventTime = generateMediaPeriodEventTime(windowIndex, mediaPeriodId); + if (mediaPeriodQueueTracker.onMediaPeriodReleased(mediaPeriodId)) { + for (AnalyticsListener listener : listeners) { + listener.onMediaPeriodReleased(eventTime); + } + } + } + + @Override + public final void onLoadStarted( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData) { + EventTime eventTime = generateMediaPeriodEventTime(windowIndex, mediaPeriodId); + for (AnalyticsListener listener : listeners) { + listener.onLoadStarted(eventTime, loadEventInfo, mediaLoadData); + } + } + + @Override + public final void onLoadCompleted( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData) { + EventTime eventTime = generateMediaPeriodEventTime(windowIndex, mediaPeriodId); + for (AnalyticsListener listener : listeners) { + listener.onLoadCompleted(eventTime, loadEventInfo, mediaLoadData); + } + } + + @Override + public final void onLoadCanceled( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData) { + EventTime eventTime = generateMediaPeriodEventTime(windowIndex, mediaPeriodId); + for (AnalyticsListener listener : listeners) { + listener.onLoadCanceled(eventTime, loadEventInfo, mediaLoadData); + } + } + + @Override + public final void onLoadError( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData, + IOException error, + boolean wasCanceled) { + EventTime eventTime = generateMediaPeriodEventTime(windowIndex, mediaPeriodId); + for (AnalyticsListener listener : listeners) { + listener.onLoadError(eventTime, loadEventInfo, mediaLoadData, error, wasCanceled); + } + } + + @Override + public final void onReadingStarted(int windowIndex, MediaPeriodId mediaPeriodId) { + mediaPeriodQueueTracker.onReadingStarted(mediaPeriodId); + EventTime eventTime = generateMediaPeriodEventTime(windowIndex, mediaPeriodId); + for (AnalyticsListener listener : listeners) { + listener.onReadingStarted(eventTime); + } + } + + @Override + public final void onUpstreamDiscarded( + int windowIndex, @Nullable MediaPeriodId mediaPeriodId, MediaLoadData mediaLoadData) { + EventTime eventTime = generateMediaPeriodEventTime(windowIndex, mediaPeriodId); + for (AnalyticsListener listener : listeners) { + listener.onUpstreamDiscarded(eventTime, mediaLoadData); + } + } + + @Override + public final void onDownstreamFormatChanged( + int windowIndex, @Nullable MediaPeriodId mediaPeriodId, MediaLoadData mediaLoadData) { + EventTime eventTime = generateMediaPeriodEventTime(windowIndex, mediaPeriodId); + for (AnalyticsListener listener : listeners) { + listener.onDownstreamFormatChanged(eventTime, mediaLoadData); + } + } + + // Player.EventListener implementation. + + // TODO: Add onFinishedReportingChanges to Player.EventListener to know when a set of simultaneous + // callbacks finished. This helps to assign exactly the same EventTime to all of them instead of + // having slightly different real times. + + @Override + public final void onTimelineChanged(Timeline timeline, @Player.TimelineChangeReason int reason) { + mediaPeriodQueueTracker.onTimelineChanged(timeline); + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onTimelineChanged(eventTime, reason); + } + } + + @Override + public final void onTracksChanged( + TrackGroupArray trackGroups, TrackSelectionArray trackSelections) { + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onTracksChanged(eventTime, trackGroups, trackSelections); + } + } + + @Override + public final void onLoadingChanged(boolean isLoading) { + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onLoadingChanged(eventTime, isLoading); + } + } + + @Override + public final void onPlayerStateChanged(boolean playWhenReady, @Player.State int playbackState) { + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onPlayerStateChanged(eventTime, playWhenReady, playbackState); + } + } + + @Override + public void onPlaybackSuppressionReasonChanged( + @PlaybackSuppressionReason int playbackSuppressionReason) { + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onPlaybackSuppressionReasonChanged(eventTime, playbackSuppressionReason); + } + } + + @Override + public void onIsPlayingChanged(boolean isPlaying) { + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onIsPlayingChanged(eventTime, isPlaying); + } + } + + @Override + public final void onRepeatModeChanged(@Player.RepeatMode int repeatMode) { + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onRepeatModeChanged(eventTime, repeatMode); + } + } + + @Override + public final void onShuffleModeEnabledChanged(boolean shuffleModeEnabled) { + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onShuffleModeChanged(eventTime, shuffleModeEnabled); + } + } + + @Override + public final void onPlayerError(ExoPlaybackException error) { + EventTime eventTime = generateLastReportedPlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onPlayerError(eventTime, error); + } + } + + @Override + public final void onPositionDiscontinuity(@Player.DiscontinuityReason int reason) { + mediaPeriodQueueTracker.onPositionDiscontinuity(reason); + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onPositionDiscontinuity(eventTime, reason); + } + } + + @Override + public final void onPlaybackParametersChanged(PlaybackParameters playbackParameters) { + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onPlaybackParametersChanged(eventTime, playbackParameters); + } + } + + @Override + public final void onSeekProcessed() { + if (mediaPeriodQueueTracker.isSeeking()) { + mediaPeriodQueueTracker.onSeekProcessed(); + EventTime eventTime = generatePlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onSeekProcessed(eventTime); + } + } + } + + // BandwidthMeter.Listener implementation. + + @Override + public final void onBandwidthSample(int elapsedMs, long bytes, long bitrate) { + EventTime eventTime = generateLoadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onBandwidthEstimate(eventTime, elapsedMs, bytes, bitrate); + } + } + + // DefaultDrmSessionManager.EventListener implementation. + + @Override + public final void onDrmSessionAcquired() { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDrmSessionAcquired(eventTime); + } + } + + @Override + public final void onDrmKeysLoaded() { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDrmKeysLoaded(eventTime); + } + } + + @Override + public final void onDrmSessionManagerError(Exception error) { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDrmSessionManagerError(eventTime, error); + } + } + + @Override + public final void onDrmKeysRestored() { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDrmKeysRestored(eventTime); + } + } + + @Override + public final void onDrmKeysRemoved() { + EventTime eventTime = generateReadingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDrmKeysRemoved(eventTime); + } + } + + @Override + public final void onDrmSessionReleased() { + EventTime eventTime = generateLastReportedPlayingMediaPeriodEventTime(); + for (AnalyticsListener listener : listeners) { + listener.onDrmSessionReleased(eventTime); + } + } + + // Internal methods. + + /** Returns read-only set of registered listeners. */ + protected Set getListeners() { + return Collections.unmodifiableSet(listeners); + } + + /** Returns a new {@link EventTime} for the specified timeline, window and media period id. */ + @RequiresNonNull("player") + protected EventTime generateEventTime( + Timeline timeline, int windowIndex, @Nullable MediaPeriodId mediaPeriodId) { + if (timeline.isEmpty()) { + // Ensure media period id is only reported together with a valid timeline. + mediaPeriodId = null; + } + long realtimeMs = clock.elapsedRealtime(); + long eventPositionMs; + boolean isInCurrentWindow = + timeline == player.getCurrentTimeline() && windowIndex == player.getCurrentWindowIndex(); + if (mediaPeriodId != null && mediaPeriodId.isAd()) { + boolean isCurrentAd = + isInCurrentWindow + && player.getCurrentAdGroupIndex() == mediaPeriodId.adGroupIndex + && player.getCurrentAdIndexInAdGroup() == mediaPeriodId.adIndexInAdGroup; + // Assume start position of 0 for future ads. + eventPositionMs = isCurrentAd ? player.getCurrentPosition() : 0; + } else if (isInCurrentWindow) { + eventPositionMs = player.getContentPosition(); + } else { + // Assume default start position for future content windows. If timeline is not available yet, + // assume start position of 0. + eventPositionMs = + timeline.isEmpty() ? 0 : timeline.getWindow(windowIndex, window).getDefaultPositionMs(); + } + return new EventTime( + realtimeMs, + timeline, + windowIndex, + mediaPeriodId, + eventPositionMs, + player.getCurrentPosition(), + player.getTotalBufferedDuration()); + } + + private EventTime generateEventTime(@Nullable MediaPeriodInfo mediaPeriodInfo) { + Assertions.checkNotNull(player); + if (mediaPeriodInfo == null) { + int windowIndex = player.getCurrentWindowIndex(); + mediaPeriodInfo = mediaPeriodQueueTracker.tryResolveWindowIndex(windowIndex); + if (mediaPeriodInfo == null) { + Timeline timeline = player.getCurrentTimeline(); + boolean windowIsInTimeline = windowIndex < timeline.getWindowCount(); + return generateEventTime( + windowIsInTimeline ? timeline : Timeline.EMPTY, windowIndex, /* mediaPeriodId= */ null); + } + } + return generateEventTime( + mediaPeriodInfo.timeline, mediaPeriodInfo.windowIndex, mediaPeriodInfo.mediaPeriodId); + } + + private EventTime generateLastReportedPlayingMediaPeriodEventTime() { + return generateEventTime(mediaPeriodQueueTracker.getLastReportedPlayingMediaPeriod()); + } + + private EventTime generatePlayingMediaPeriodEventTime() { + return generateEventTime(mediaPeriodQueueTracker.getPlayingMediaPeriod()); + } + + private EventTime generateReadingMediaPeriodEventTime() { + return generateEventTime(mediaPeriodQueueTracker.getReadingMediaPeriod()); + } + + private EventTime generateLoadingMediaPeriodEventTime() { + return generateEventTime(mediaPeriodQueueTracker.getLoadingMediaPeriod()); + } + + private EventTime generateMediaPeriodEventTime( + int windowIndex, @Nullable MediaPeriodId mediaPeriodId) { + Assertions.checkNotNull(player); + if (mediaPeriodId != null) { + MediaPeriodInfo mediaPeriodInfo = mediaPeriodQueueTracker.getMediaPeriodInfo(mediaPeriodId); + return mediaPeriodInfo != null + ? generateEventTime(mediaPeriodInfo) + : generateEventTime(Timeline.EMPTY, windowIndex, mediaPeriodId); + } + Timeline timeline = player.getCurrentTimeline(); + boolean windowIsInTimeline = windowIndex < timeline.getWindowCount(); + return generateEventTime( + windowIsInTimeline ? timeline : Timeline.EMPTY, windowIndex, /* mediaPeriodId= */ null); + } + + /** Keeps track of the active media periods and currently playing and reading media period. */ + private static final class MediaPeriodQueueTracker { + + // TODO: Investigate reporting MediaPeriodId in renderer events and adding a listener of queue + // changes, which would hopefully remove the need to track the queue here. + + private final ArrayList mediaPeriodInfoQueue; + private final HashMap mediaPeriodIdToInfo; + private final Period period; + + @Nullable private MediaPeriodInfo lastPlayingMediaPeriod; + @Nullable private MediaPeriodInfo lastReportedPlayingMediaPeriod; + @Nullable private MediaPeriodInfo readingMediaPeriod; + private Timeline timeline; + private boolean isSeeking; + + public MediaPeriodQueueTracker() { + mediaPeriodInfoQueue = new ArrayList<>(); + mediaPeriodIdToInfo = new HashMap<>(); + period = new Period(); + timeline = Timeline.EMPTY; + } + + /** + * Returns the {@link MediaPeriodInfo} of the media period in the front of the queue. This is + * the playing media period unless the player hasn't started playing yet (in which case it is + * the loading media period or null). While the player is seeking or preparing, this method will + * always return null to reflect the uncertainty about the current playing period. May also be + * null, if the timeline is empty or no media period is active yet. + */ + @Nullable + public MediaPeriodInfo getPlayingMediaPeriod() { + return mediaPeriodInfoQueue.isEmpty() || timeline.isEmpty() || isSeeking + ? null + : mediaPeriodInfoQueue.get(0); + } + + /** + * Returns the {@link MediaPeriodInfo} of the currently playing media period. This is the + * publicly reported period which should always match {@link Player#getCurrentPeriodIndex()} + * unless the player is currently seeking or being prepared in which case the previous period is + * reported until the seek or preparation is processed. May be null, if no media period is + * active yet. + */ + @Nullable + public MediaPeriodInfo getLastReportedPlayingMediaPeriod() { + return lastReportedPlayingMediaPeriod; + } + + /** + * Returns the {@link MediaPeriodInfo} of the media period currently being read by the player. + * May be null, if the player is not reading a media period. + */ + @Nullable + public MediaPeriodInfo getReadingMediaPeriod() { + return readingMediaPeriod; + } + + /** + * Returns the {@link MediaPeriodInfo} of the media period at the end of the queue which is + * currently loading or will be the next one loading. May be null, if no media period is active + * yet. + */ + @Nullable + public MediaPeriodInfo getLoadingMediaPeriod() { + return mediaPeriodInfoQueue.isEmpty() + ? null + : mediaPeriodInfoQueue.get(mediaPeriodInfoQueue.size() - 1); + } + + /** Returns the {@link MediaPeriodInfo} for the given {@link MediaPeriodId}. */ + @Nullable + public MediaPeriodInfo getMediaPeriodInfo(MediaPeriodId mediaPeriodId) { + return mediaPeriodIdToInfo.get(mediaPeriodId); + } + + /** Returns whether the player is currently seeking. */ + public boolean isSeeking() { + return isSeeking; + } + + /** + * Tries to find an existing media period info from the specified window index. Only returns a + * non-null media period info if there is a unique, unambiguous match. + */ + @Nullable + public MediaPeriodInfo tryResolveWindowIndex(int windowIndex) { + MediaPeriodInfo match = null; + for (int i = 0; i < mediaPeriodInfoQueue.size(); i++) { + MediaPeriodInfo info = mediaPeriodInfoQueue.get(i); + int periodIndex = timeline.getIndexOfPeriod(info.mediaPeriodId.periodUid); + if (periodIndex != C.INDEX_UNSET + && timeline.getPeriod(periodIndex, period).windowIndex == windowIndex) { + if (match != null) { + // Ambiguous match. + return null; + } + match = info; + } + } + return match; + } + + /** Updates the queue with a reported position discontinuity . */ + public void onPositionDiscontinuity(@Player.DiscontinuityReason int reason) { + lastReportedPlayingMediaPeriod = lastPlayingMediaPeriod; + } + + /** Updates the queue with a reported timeline change. */ + public void onTimelineChanged(Timeline timeline) { + for (int i = 0; i < mediaPeriodInfoQueue.size(); i++) { + MediaPeriodInfo newMediaPeriodInfo = + updateMediaPeriodInfoToNewTimeline(mediaPeriodInfoQueue.get(i), timeline); + mediaPeriodInfoQueue.set(i, newMediaPeriodInfo); + mediaPeriodIdToInfo.put(newMediaPeriodInfo.mediaPeriodId, newMediaPeriodInfo); + } + if (readingMediaPeriod != null) { + readingMediaPeriod = updateMediaPeriodInfoToNewTimeline(readingMediaPeriod, timeline); + } + this.timeline = timeline; + lastReportedPlayingMediaPeriod = lastPlayingMediaPeriod; + } + + /** Updates the queue with a reported start of seek. */ + public void onSeekStarted() { + isSeeking = true; + } + + /** Updates the queue with a reported processed seek. */ + public void onSeekProcessed() { + isSeeking = false; + lastReportedPlayingMediaPeriod = lastPlayingMediaPeriod; + } + + /** Updates the queue with a newly created media period. */ + public void onMediaPeriodCreated(int windowIndex, MediaPeriodId mediaPeriodId) { + int periodIndex = timeline.getIndexOfPeriod(mediaPeriodId.periodUid); + boolean isInTimeline = periodIndex != C.INDEX_UNSET; + MediaPeriodInfo mediaPeriodInfo = + new MediaPeriodInfo( + mediaPeriodId, + isInTimeline ? timeline : Timeline.EMPTY, + isInTimeline ? timeline.getPeriod(periodIndex, period).windowIndex : windowIndex); + mediaPeriodInfoQueue.add(mediaPeriodInfo); + mediaPeriodIdToInfo.put(mediaPeriodId, mediaPeriodInfo); + lastPlayingMediaPeriod = mediaPeriodInfoQueue.get(0); + if (mediaPeriodInfoQueue.size() == 1 && !timeline.isEmpty()) { + lastReportedPlayingMediaPeriod = lastPlayingMediaPeriod; + } + } + + /** + * Updates the queue with a released media period. Returns whether the media period was still in + * the queue. + */ + public boolean onMediaPeriodReleased(MediaPeriodId mediaPeriodId) { + MediaPeriodInfo mediaPeriodInfo = mediaPeriodIdToInfo.remove(mediaPeriodId); + if (mediaPeriodInfo == null) { + // The media period has already been removed from the queue in resetForNewMediaSource(). + return false; + } + mediaPeriodInfoQueue.remove(mediaPeriodInfo); + if (readingMediaPeriod != null && mediaPeriodId.equals(readingMediaPeriod.mediaPeriodId)) { + readingMediaPeriod = mediaPeriodInfoQueue.isEmpty() ? null : mediaPeriodInfoQueue.get(0); + } + if (!mediaPeriodInfoQueue.isEmpty()) { + lastPlayingMediaPeriod = mediaPeriodInfoQueue.get(0); + } + return true; + } + + /** Update the queue with a change in the reading media period. */ + public void onReadingStarted(MediaPeriodId mediaPeriodId) { + readingMediaPeriod = mediaPeriodIdToInfo.get(mediaPeriodId); + } + + private MediaPeriodInfo updateMediaPeriodInfoToNewTimeline( + MediaPeriodInfo info, Timeline newTimeline) { + int newPeriodIndex = newTimeline.getIndexOfPeriod(info.mediaPeriodId.periodUid); + if (newPeriodIndex == C.INDEX_UNSET) { + // Media period is not yet or no longer available in the new timeline. Keep it as it is. + return info; + } + int newWindowIndex = newTimeline.getPeriod(newPeriodIndex, period).windowIndex; + return new MediaPeriodInfo(info.mediaPeriodId, newTimeline, newWindowIndex); + } + } + + /** Information about a media period and its associated timeline. */ + private static final class MediaPeriodInfo { + + /** The {@link MediaPeriodId} of the media period. */ + public final MediaPeriodId mediaPeriodId; + /** + * The {@link Timeline} in which the media period can be found. Or {@link Timeline#EMPTY} if the + * media period is not part of a known timeline yet. + */ + public final Timeline timeline; + /** + * The window index of the media period in the timeline. If the timeline is empty, this is the + * prospective window index. + */ + public final int windowIndex; + + public MediaPeriodInfo(MediaPeriodId mediaPeriodId, Timeline timeline, int windowIndex) { + this.mediaPeriodId = mediaPeriodId; + this.timeline = timeline; + this.windowIndex = windowIndex; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/AnalyticsListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/AnalyticsListener.java new file mode 100644 index 0000000000..a265268c19 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/AnalyticsListener.java @@ -0,0 +1,514 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.analytics; + +import android.view.Surface; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.DiscontinuityReason; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.PlaybackSuppressionReason; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.TimelineChangeReason; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioSink; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderCounters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.LoadEventInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.MediaLoadData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray; +import java.io.IOException; + +/** + * A listener for analytics events. + * + *

All events are recorded with an {@link EventTime} specifying the elapsed real time and media + * time at the time of the event. + * + *

All methods have no-op default implementations to allow selective overrides. + */ +public interface AnalyticsListener { + + /** Time information of an event. */ + final class EventTime { + + /** + * Elapsed real-time as returned by {@code SystemClock.elapsedRealtime()} at the time of the + * event, in milliseconds. + */ + public final long realtimeMs; + + /** Timeline at the time of the event. */ + public final Timeline timeline; + + /** + * Window index in the {@link #timeline} this event belongs to, or the prospective window index + * if the timeline is not yet known and empty. + */ + public final int windowIndex; + + /** + * Media period identifier for the media period this event belongs to, or {@code null} if the + * event is not associated with a specific media period. + */ + @Nullable public final MediaPeriodId mediaPeriodId; + + /** + * Position in the window or ad this event belongs to at the time of the event, in milliseconds. + */ + public final long eventPlaybackPositionMs; + + /** + * Position in the current timeline window ({@link Player#getCurrentWindowIndex()}) or the + * currently playing ad at the time of the event, in milliseconds. + */ + public final long currentPlaybackPositionMs; + + /** + * Total buffered duration from {@link #currentPlaybackPositionMs} at the time of the event, in + * milliseconds. This includes pre-buffered data for subsequent ads and windows. + */ + public final long totalBufferedDurationMs; + + /** + * @param realtimeMs Elapsed real-time as returned by {@code SystemClock.elapsedRealtime()} at + * the time of the event, in milliseconds. + * @param timeline Timeline at the time of the event. + * @param windowIndex Window index in the {@link #timeline} this event belongs to, or the + * prospective window index if the timeline is not yet known and empty. + * @param mediaPeriodId Media period identifier for the media period this event belongs to, or + * {@code null} if the event is not associated with a specific media period. + * @param eventPlaybackPositionMs Position in the window or ad this event belongs to at the time + * of the event, in milliseconds. + * @param currentPlaybackPositionMs Position in the current timeline window ({@link + * Player#getCurrentWindowIndex()}) or the currently playing ad at the time of the event, in + * milliseconds. + * @param totalBufferedDurationMs Total buffered duration from {@link + * #currentPlaybackPositionMs} at the time of the event, in milliseconds. This includes + * pre-buffered data for subsequent ads and windows. + */ + public EventTime( + long realtimeMs, + Timeline timeline, + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + long eventPlaybackPositionMs, + long currentPlaybackPositionMs, + long totalBufferedDurationMs) { + this.realtimeMs = realtimeMs; + this.timeline = timeline; + this.windowIndex = windowIndex; + this.mediaPeriodId = mediaPeriodId; + this.eventPlaybackPositionMs = eventPlaybackPositionMs; + this.currentPlaybackPositionMs = currentPlaybackPositionMs; + this.totalBufferedDurationMs = totalBufferedDurationMs; + } + } + + /** + * Called when the player state changed. + * + * @param eventTime The event time. + * @param playWhenReady Whether the playback will proceed when ready. + * @param playbackState The new {@link Player.State playback state}. + */ + default void onPlayerStateChanged( + EventTime eventTime, boolean playWhenReady, @Player.State int playbackState) {} + + /** + * Called when playback suppression reason changed. + * + * @param eventTime The event time. + * @param playbackSuppressionReason The new {@link PlaybackSuppressionReason}. + */ + default void onPlaybackSuppressionReasonChanged( + EventTime eventTime, @PlaybackSuppressionReason int playbackSuppressionReason) {} + + /** + * Called when the player starts or stops playing. + * + * @param eventTime The event time. + * @param isPlaying Whether the player is playing. + */ + default void onIsPlayingChanged(EventTime eventTime, boolean isPlaying) {} + + /** + * Called when the timeline changed. + * + * @param eventTime The event time. + * @param reason The reason for the timeline change. + */ + default void onTimelineChanged(EventTime eventTime, @TimelineChangeReason int reason) {} + + /** + * Called when a position discontinuity occurred. + * + * @param eventTime The event time. + * @param reason The reason for the position discontinuity. + */ + default void onPositionDiscontinuity(EventTime eventTime, @DiscontinuityReason int reason) {} + + /** + * Called when a seek operation started. + * + * @param eventTime The event time. + */ + default void onSeekStarted(EventTime eventTime) {} + + /** + * Called when a seek operation was processed. + * + * @param eventTime The event time. + */ + default void onSeekProcessed(EventTime eventTime) {} + + /** + * Called when the playback parameters changed. + * + * @param eventTime The event time. + * @param playbackParameters The new playback parameters. + */ + default void onPlaybackParametersChanged( + EventTime eventTime, PlaybackParameters playbackParameters) {} + + /** + * Called when the repeat mode changed. + * + * @param eventTime The event time. + * @param repeatMode The new repeat mode. + */ + default void onRepeatModeChanged(EventTime eventTime, @Player.RepeatMode int repeatMode) {} + + /** + * Called when the shuffle mode changed. + * + * @param eventTime The event time. + * @param shuffleModeEnabled Whether the shuffle mode is enabled. + */ + default void onShuffleModeChanged(EventTime eventTime, boolean shuffleModeEnabled) {} + + /** + * Called when the player starts or stops loading data from a source. + * + * @param eventTime The event time. + * @param isLoading Whether the player is loading. + */ + default void onLoadingChanged(EventTime eventTime, boolean isLoading) {} + + /** + * Called when a fatal player error occurred. + * + * @param eventTime The event time. + * @param error The error. + */ + default void onPlayerError(EventTime eventTime, ExoPlaybackException error) {} + + /** + * Called when the available or selected tracks for the renderers changed. + * + * @param eventTime The event time. + * @param trackGroups The available tracks. May be empty. + * @param trackSelections The track selections for each renderer. May contain null elements. + */ + default void onTracksChanged( + EventTime eventTime, TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {} + + /** + * Called when a media source started loading data. + * + * @param eventTime The event time. + * @param loadEventInfo The {@link LoadEventInfo} defining the load event. + * @param mediaLoadData The {@link MediaLoadData} defining the data being loaded. + */ + default void onLoadStarted( + EventTime eventTime, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {} + + /** + * Called when a media source completed loading data. + * + * @param eventTime The event time. + * @param loadEventInfo The {@link LoadEventInfo} defining the load event. + * @param mediaLoadData The {@link MediaLoadData} defining the data being loaded. + */ + default void onLoadCompleted( + EventTime eventTime, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {} + + /** + * Called when a media source canceled loading data. + * + * @param eventTime The event time. + * @param loadEventInfo The {@link LoadEventInfo} defining the load event. + * @param mediaLoadData The {@link MediaLoadData} defining the data being loaded. + */ + default void onLoadCanceled( + EventTime eventTime, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {} + + /** + * Called when a media source loading error occurred. These errors are just for informational + * purposes and the player may recover. + * + * @param eventTime The event time. + * @param loadEventInfo The {@link LoadEventInfo} defining the load event. + * @param mediaLoadData The {@link MediaLoadData} defining the data being loaded. + * @param error The load error. + * @param wasCanceled Whether the load was canceled as a result of the error. + */ + default void onLoadError( + EventTime eventTime, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData, + IOException error, + boolean wasCanceled) {} + + /** + * Called when the downstream format sent to the renderers changed. + * + * @param eventTime The event time. + * @param mediaLoadData The {@link MediaLoadData} defining the newly selected media data. + */ + default void onDownstreamFormatChanged(EventTime eventTime, MediaLoadData mediaLoadData) {} + + /** + * Called when data is removed from the back of a media buffer, typically so that it can be + * re-buffered in a different format. + * + * @param eventTime The event time. + * @param mediaLoadData The {@link MediaLoadData} defining the media being discarded. + */ + default void onUpstreamDiscarded(EventTime eventTime, MediaLoadData mediaLoadData) {} + + /** + * Called when a media source created a media period. + * + * @param eventTime The event time. + */ + default void onMediaPeriodCreated(EventTime eventTime) {} + + /** + * Called when a media source released a media period. + * + * @param eventTime The event time. + */ + default void onMediaPeriodReleased(EventTime eventTime) {} + + /** + * Called when the player started reading a media period. + * + * @param eventTime The event time. + */ + default void onReadingStarted(EventTime eventTime) {} + + /** + * Called when the bandwidth estimate for the current data source has been updated. + * + * @param eventTime The event time. + * @param totalLoadTimeMs The total time spend loading this update is based on, in milliseconds. + * @param totalBytesLoaded The total bytes loaded this update is based on. + * @param bitrateEstimate The bandwidth estimate, in bits per second. + */ + default void onBandwidthEstimate( + EventTime eventTime, int totalLoadTimeMs, long totalBytesLoaded, long bitrateEstimate) {} + + /** + * Called when the output surface size changed. + * + * @param eventTime The event time. + * @param width The surface width in pixels. May be {@link C#LENGTH_UNSET} if unknown, or 0 if the + * video is not rendered onto a surface. + * @param height The surface height in pixels. May be {@link C#LENGTH_UNSET} if unknown, or 0 if + * the video is not rendered onto a surface. + */ + default void onSurfaceSizeChanged(EventTime eventTime, int width, int height) {} + + /** + * Called when there is {@link Metadata} associated with the current playback time. + * + * @param eventTime The event time. + * @param metadata The metadata. + */ + default void onMetadata(EventTime eventTime, Metadata metadata) {} + + /** + * Called when an audio or video decoder has been enabled. + * + * @param eventTime The event time. + * @param trackType The track type of the enabled decoder. Either {@link C#TRACK_TYPE_AUDIO} or + * {@link C#TRACK_TYPE_VIDEO}. + * @param decoderCounters The accumulated event counters associated with this decoder. + */ + default void onDecoderEnabled( + EventTime eventTime, int trackType, DecoderCounters decoderCounters) {} + + /** + * Called when an audio or video decoder has been initialized. + * + * @param eventTime The event time. + * @param trackType The track type of the initialized decoder. Either {@link C#TRACK_TYPE_AUDIO} + * or {@link C#TRACK_TYPE_VIDEO}. + * @param decoderName The decoder that was created. + * @param initializationDurationMs Time taken to initialize the decoder, in milliseconds. + */ + default void onDecoderInitialized( + EventTime eventTime, int trackType, String decoderName, long initializationDurationMs) {} + + /** + * Called when an audio or video decoder input format changed. + * + * @param eventTime The event time. + * @param trackType The track type of the decoder whose format changed. Either {@link + * C#TRACK_TYPE_AUDIO} or {@link C#TRACK_TYPE_VIDEO}. + * @param format The new input format for the decoder. + */ + default void onDecoderInputFormatChanged(EventTime eventTime, int trackType, Format format) {} + + /** + * Called when an audio or video decoder has been disabled. + * + * @param eventTime The event time. + * @param trackType The track type of the disabled decoder. Either {@link C#TRACK_TYPE_AUDIO} or + * {@link C#TRACK_TYPE_VIDEO}. + * @param decoderCounters The accumulated event counters associated with this decoder. + */ + default void onDecoderDisabled( + EventTime eventTime, int trackType, DecoderCounters decoderCounters) {} + + /** + * Called when the audio session id is set. + * + * @param eventTime The event time. + * @param audioSessionId The audio session id. + */ + default void onAudioSessionId(EventTime eventTime, int audioSessionId) {} + + /** + * Called when the audio attributes change. + * + * @param eventTime The event time. + * @param audioAttributes The audio attributes. + */ + default void onAudioAttributesChanged(EventTime eventTime, AudioAttributes audioAttributes) {} + + /** + * Called when the volume changes. + * + * @param eventTime The event time. + * @param volume The new volume, with 0 being silence and 1 being unity gain. + */ + default void onVolumeChanged(EventTime eventTime, float volume) {} + + /** + * Called when an audio underrun occurred. + * + * @param eventTime The event time. + * @param bufferSize The size of the {@link AudioSink}'s buffer, in bytes. + * @param bufferSizeMs The size of the {@link AudioSink}'s buffer, in milliseconds, if it is + * configured for PCM output. {@link C#TIME_UNSET} if it is configured for passthrough output, + * as the buffered media can have a variable bitrate so the duration may be unknown. + * @param elapsedSinceLastFeedMs The time since the {@link AudioSink} was last fed data. + */ + default void onAudioUnderrun( + EventTime eventTime, int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs) {} + + /** + * Called after video frames have been dropped. + * + * @param eventTime The event time. + * @param droppedFrames The number of dropped frames since the last call to this method. + * @param elapsedMs The duration in milliseconds over which the frames were dropped. This duration + * is timed from when the renderer was started or from when dropped frames were last reported + * (whichever was more recent), and not from when the first of the reported drops occurred. + */ + default void onDroppedVideoFrames(EventTime eventTime, int droppedFrames, long elapsedMs) {} + + /** + * Called before a frame is rendered for the first time since setting the surface, and each time + * there's a change in the size or pixel aspect ratio of the video being rendered. + * + * @param eventTime The event time. + * @param width The width of the video. + * @param height The height of the video. + * @param unappliedRotationDegrees For videos that require a rotation, this is the clockwise + * rotation in degrees that the application should apply for the video for it to be rendered + * in the correct orientation. This value will always be zero on API levels 21 and above, + * since the renderer will apply all necessary rotations internally. + * @param pixelWidthHeightRatio The width to height ratio of each pixel. + */ + default void onVideoSizeChanged( + EventTime eventTime, + int width, + int height, + int unappliedRotationDegrees, + float pixelWidthHeightRatio) {} + + /** + * Called when a frame is rendered for the first time since setting the surface, and when a frame + * is rendered for the first time since the renderer was reset. + * + * @param eventTime The event time. + * @param surface The {@link Surface} to which a first frame has been rendered, or {@code null} if + * the renderer renders to something that isn't a {@link Surface}. + */ + default void onRenderedFirstFrame(EventTime eventTime, @Nullable Surface surface) {} + + /** + * Called each time a drm session is acquired. + * + * @param eventTime The event time. + */ + default void onDrmSessionAcquired(EventTime eventTime) {} + + /** + * Called each time drm keys are loaded. + * + * @param eventTime The event time. + */ + default void onDrmKeysLoaded(EventTime eventTime) {} + + /** + * Called when a drm error occurs. These errors are just for informational purposes and the player + * may recover. + * + * @param eventTime The event time. + * @param error The error. + */ + default void onDrmSessionManagerError(EventTime eventTime, Exception error) {} + + /** + * Called each time offline drm keys are restored. + * + * @param eventTime The event time. + */ + default void onDrmKeysRestored(EventTime eventTime) {} + + /** + * Called each time offline drm keys are removed. + * + * @param eventTime The event time. + */ + default void onDrmKeysRemoved(EventTime eventTime) {} + + /** + * Called each time a drm session is released. + * + * @param eventTime The event time. + */ + default void onDrmSessionReleased(EventTime eventTime) {} +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/DefaultAnalyticsListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/DefaultAnalyticsListener.java new file mode 100644 index 0000000000..f56ac3fef0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/DefaultAnalyticsListener.java @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.analytics; + +/** + * @deprecated Use {@link AnalyticsListener} directly for selective overrides as all methods are + * implemented as no-op default methods. + */ +@Deprecated +public abstract class DefaultAnalyticsListener implements AnalyticsListener {} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/DefaultPlaybackSessionManager.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/DefaultPlaybackSessionManager.java new file mode 100644 index 0000000000..710934bd36 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/DefaultPlaybackSessionManager.java @@ -0,0 +1,355 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.analytics; + +import android.util.Base64; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.DiscontinuityReason; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.analytics.AnalyticsListener.EventTime; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.HashMap; +import java.util.Iterator; +import java.util.Random; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; +import org.checkerframework.checker.nullness.qual.RequiresNonNull; + +/** + * Default {@link PlaybackSessionManager} which instantiates a new session for each window in the + * timeline and also for each ad within the windows. + * + *

Sessions are identified by Base64-encoded, URL-safe, random strings. + */ +public final class DefaultPlaybackSessionManager implements PlaybackSessionManager { + + private static final Random RANDOM = new Random(); + private static final int SESSION_ID_LENGTH = 12; + + private final Timeline.Window window; + private final Timeline.Period period; + private final HashMap sessions; + + private @MonotonicNonNull Listener listener; + private Timeline currentTimeline; + @Nullable private MediaPeriodId currentMediaPeriodId; + @Nullable private String activeSessionId; + + /** Creates session manager. */ + public DefaultPlaybackSessionManager() { + window = new Timeline.Window(); + period = new Timeline.Period(); + sessions = new HashMap<>(); + currentTimeline = Timeline.EMPTY; + } + + @Override + public void setListener(Listener listener) { + this.listener = listener; + } + + @Override + public synchronized String getSessionForMediaPeriodId( + Timeline timeline, MediaPeriodId mediaPeriodId) { + int windowIndex = timeline.getPeriodByUid(mediaPeriodId.periodUid, period).windowIndex; + return getOrAddSession(windowIndex, mediaPeriodId).sessionId; + } + + @Override + public synchronized boolean belongsToSession(EventTime eventTime, String sessionId) { + SessionDescriptor sessionDescriptor = sessions.get(sessionId); + if (sessionDescriptor == null) { + return false; + } + sessionDescriptor.maybeSetWindowSequenceNumber(eventTime.windowIndex, eventTime.mediaPeriodId); + return sessionDescriptor.belongsToSession(eventTime.windowIndex, eventTime.mediaPeriodId); + } + + @Override + public synchronized void updateSessions(EventTime eventTime) { + boolean isObviouslyFinished = + eventTime.mediaPeriodId != null + && currentMediaPeriodId != null + && eventTime.mediaPeriodId.windowSequenceNumber + < currentMediaPeriodId.windowSequenceNumber; + if (!isObviouslyFinished) { + SessionDescriptor descriptor = + getOrAddSession(eventTime.windowIndex, eventTime.mediaPeriodId); + if (!descriptor.isCreated) { + descriptor.isCreated = true; + Assertions.checkNotNull(listener).onSessionCreated(eventTime, descriptor.sessionId); + if (activeSessionId == null) { + updateActiveSession(eventTime, descriptor); + } + } + } + } + + @Override + public synchronized void handleTimelineUpdate(EventTime eventTime) { + Assertions.checkNotNull(listener); + Timeline previousTimeline = currentTimeline; + currentTimeline = eventTime.timeline; + Iterator iterator = sessions.values().iterator(); + while (iterator.hasNext()) { + SessionDescriptor session = iterator.next(); + if (!session.tryResolvingToNewTimeline(previousTimeline, currentTimeline)) { + iterator.remove(); + if (session.isCreated) { + if (session.sessionId.equals(activeSessionId)) { + activeSessionId = null; + } + listener.onSessionFinished( + eventTime, session.sessionId, /* automaticTransitionToNextPlayback= */ false); + } + } + } + handlePositionDiscontinuity(eventTime, Player.DISCONTINUITY_REASON_INTERNAL); + } + + @Override + public synchronized void handlePositionDiscontinuity( + EventTime eventTime, @DiscontinuityReason int reason) { + Assertions.checkNotNull(listener); + boolean hasAutomaticTransition = + reason == Player.DISCONTINUITY_REASON_PERIOD_TRANSITION + || reason == Player.DISCONTINUITY_REASON_AD_INSERTION; + Iterator iterator = sessions.values().iterator(); + while (iterator.hasNext()) { + SessionDescriptor session = iterator.next(); + if (session.isFinishedAtEventTime(eventTime)) { + iterator.remove(); + if (session.isCreated) { + boolean isRemovingActiveSession = session.sessionId.equals(activeSessionId); + boolean isAutomaticTransition = hasAutomaticTransition && isRemovingActiveSession; + if (isRemovingActiveSession) { + activeSessionId = null; + } + listener.onSessionFinished(eventTime, session.sessionId, isAutomaticTransition); + } + } + } + SessionDescriptor activeSessionDescriptor = + getOrAddSession(eventTime.windowIndex, eventTime.mediaPeriodId); + if (eventTime.mediaPeriodId != null + && eventTime.mediaPeriodId.isAd() + && (currentMediaPeriodId == null + || currentMediaPeriodId.windowSequenceNumber + != eventTime.mediaPeriodId.windowSequenceNumber + || currentMediaPeriodId.adGroupIndex != eventTime.mediaPeriodId.adGroupIndex + || currentMediaPeriodId.adIndexInAdGroup != eventTime.mediaPeriodId.adIndexInAdGroup)) { + // New ad playback started. Find corresponding content session and notify ad playback started. + MediaPeriodId contentMediaPeriodId = + new MediaPeriodId( + eventTime.mediaPeriodId.periodUid, eventTime.mediaPeriodId.windowSequenceNumber); + SessionDescriptor contentSession = + getOrAddSession(eventTime.windowIndex, contentMediaPeriodId); + if (contentSession.isCreated && activeSessionDescriptor.isCreated) { + listener.onAdPlaybackStarted( + eventTime, contentSession.sessionId, activeSessionDescriptor.sessionId); + } + } + updateActiveSession(eventTime, activeSessionDescriptor); + } + + private SessionDescriptor getOrAddSession( + int windowIndex, @Nullable MediaPeriodId mediaPeriodId) { + // There should only be one matching session if mediaPeriodId is non-null. If mediaPeriodId is + // null, there may be multiple matching sessions with different window sequence numbers or + // adMediaPeriodIds. The best match is the one with the smaller window sequence number, and for + // windows with ads, the content session is preferred over ad sessions. + SessionDescriptor bestMatch = null; + long bestMatchWindowSequenceNumber = Long.MAX_VALUE; + for (SessionDescriptor sessionDescriptor : sessions.values()) { + sessionDescriptor.maybeSetWindowSequenceNumber(windowIndex, mediaPeriodId); + if (sessionDescriptor.belongsToSession(windowIndex, mediaPeriodId)) { + long windowSequenceNumber = sessionDescriptor.windowSequenceNumber; + if (windowSequenceNumber == C.INDEX_UNSET + || windowSequenceNumber < bestMatchWindowSequenceNumber) { + bestMatch = sessionDescriptor; + bestMatchWindowSequenceNumber = windowSequenceNumber; + } else if (windowSequenceNumber == bestMatchWindowSequenceNumber + && Util.castNonNull(bestMatch).adMediaPeriodId != null + && sessionDescriptor.adMediaPeriodId != null) { + bestMatch = sessionDescriptor; + } + } + } + if (bestMatch == null) { + String sessionId = generateSessionId(); + bestMatch = new SessionDescriptor(sessionId, windowIndex, mediaPeriodId); + sessions.put(sessionId, bestMatch); + } + return bestMatch; + } + + @RequiresNonNull("listener") + private void updateActiveSession(EventTime eventTime, SessionDescriptor sessionDescriptor) { + currentMediaPeriodId = eventTime.mediaPeriodId; + if (sessionDescriptor.isCreated) { + activeSessionId = sessionDescriptor.sessionId; + if (!sessionDescriptor.isActive) { + sessionDescriptor.isActive = true; + listener.onSessionActive(eventTime, sessionDescriptor.sessionId); + } + } + } + + private static String generateSessionId() { + byte[] randomBytes = new byte[SESSION_ID_LENGTH]; + RANDOM.nextBytes(randomBytes); + return Base64.encodeToString(randomBytes, Base64.URL_SAFE | Base64.NO_WRAP); + } + + /** + * Descriptor for a session. + * + *

The session may be described in one of three ways: + * + *

+ */ + private final class SessionDescriptor { + + private final String sessionId; + + private int windowIndex; + private long windowSequenceNumber; + private @MonotonicNonNull MediaPeriodId adMediaPeriodId; + + private boolean isCreated; + private boolean isActive; + + public SessionDescriptor( + String sessionId, int windowIndex, @Nullable MediaPeriodId mediaPeriodId) { + this.sessionId = sessionId; + this.windowIndex = windowIndex; + this.windowSequenceNumber = + mediaPeriodId == null ? C.INDEX_UNSET : mediaPeriodId.windowSequenceNumber; + if (mediaPeriodId != null && mediaPeriodId.isAd()) { + this.adMediaPeriodId = mediaPeriodId; + } + } + + public boolean tryResolvingToNewTimeline(Timeline oldTimeline, Timeline newTimeline) { + windowIndex = resolveWindowIndexToNewTimeline(oldTimeline, newTimeline, windowIndex); + if (windowIndex == C.INDEX_UNSET) { + return false; + } + if (adMediaPeriodId == null) { + return true; + } + int newPeriodIndex = newTimeline.getIndexOfPeriod(adMediaPeriodId.periodUid); + return newPeriodIndex != C.INDEX_UNSET; + } + + public boolean belongsToSession( + int eventWindowIndex, @Nullable MediaPeriodId eventMediaPeriodId) { + if (eventMediaPeriodId == null) { + // Events without concrete media period id are for all sessions of the same window. + return eventWindowIndex == windowIndex; + } + if (adMediaPeriodId == null) { + // If this is a content session, only events for content with the same window sequence + // number belong to this session. + return !eventMediaPeriodId.isAd() + && eventMediaPeriodId.windowSequenceNumber == windowSequenceNumber; + } + // If this is an ad session, only events for this ad belong to the session. + return eventMediaPeriodId.windowSequenceNumber == adMediaPeriodId.windowSequenceNumber + && eventMediaPeriodId.adGroupIndex == adMediaPeriodId.adGroupIndex + && eventMediaPeriodId.adIndexInAdGroup == adMediaPeriodId.adIndexInAdGroup; + } + + public void maybeSetWindowSequenceNumber( + int eventWindowIndex, @Nullable MediaPeriodId eventMediaPeriodId) { + if (windowSequenceNumber == C.INDEX_UNSET + && eventWindowIndex == windowIndex + && eventMediaPeriodId != null + && !eventMediaPeriodId.isAd()) { + // Set window sequence number for this session as soon as we have one. + windowSequenceNumber = eventMediaPeriodId.windowSequenceNumber; + } + } + + public boolean isFinishedAtEventTime(EventTime eventTime) { + if (windowSequenceNumber == C.INDEX_UNSET) { + // Sessions with unspecified window sequence number are kept until we know more. + return false; + } + if (eventTime.mediaPeriodId == null) { + // For event times without media period id (e.g. after seek to new window), we only keep + // sessions of this window. + return windowIndex != eventTime.windowIndex; + } + if (eventTime.mediaPeriodId.windowSequenceNumber > windowSequenceNumber) { + // All past window sequence numbers are finished. + return true; + } + if (adMediaPeriodId == null) { + // Current or future content is not finished. + return false; + } + int eventPeriodIndex = eventTime.timeline.getIndexOfPeriod(eventTime.mediaPeriodId.periodUid); + int adPeriodIndex = eventTime.timeline.getIndexOfPeriod(adMediaPeriodId.periodUid); + if (eventTime.mediaPeriodId.windowSequenceNumber < adMediaPeriodId.windowSequenceNumber + || eventPeriodIndex < adPeriodIndex) { + // Ads in future windows or periods are not finished. + return false; + } + if (eventPeriodIndex > adPeriodIndex) { + // Ads in past periods are finished. + return true; + } + if (eventTime.mediaPeriodId.isAd()) { + int eventAdGroup = eventTime.mediaPeriodId.adGroupIndex; + int eventAdIndex = eventTime.mediaPeriodId.adIndexInAdGroup; + // Finished if event is for an ad after this one in the same period. + return eventAdGroup > adMediaPeriodId.adGroupIndex + || (eventAdGroup == adMediaPeriodId.adGroupIndex + && eventAdIndex > adMediaPeriodId.adIndexInAdGroup); + } else { + // Finished if the event is for content after this ad. + return eventTime.mediaPeriodId.nextAdGroupIndex == C.INDEX_UNSET + || eventTime.mediaPeriodId.nextAdGroupIndex > adMediaPeriodId.adGroupIndex; + } + } + + private int resolveWindowIndexToNewTimeline( + Timeline oldTimeline, Timeline newTimeline, int windowIndex) { + if (windowIndex >= oldTimeline.getWindowCount()) { + return windowIndex < newTimeline.getWindowCount() ? windowIndex : C.INDEX_UNSET; + } + oldTimeline.getWindow(windowIndex, window); + for (int periodIndex = window.firstPeriodIndex; + periodIndex <= window.lastPeriodIndex; + periodIndex++) { + Object periodUid = oldTimeline.getUidOfPeriod(periodIndex); + int newPeriodIndex = newTimeline.getIndexOfPeriod(periodUid); + if (newPeriodIndex != C.INDEX_UNSET) { + return newTimeline.getPeriod(newPeriodIndex, period).windowIndex; + } + } + return C.INDEX_UNSET; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackSessionManager.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackSessionManager.java new file mode 100644 index 0000000000..d3c6f7dd20 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackSessionManager.java @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.analytics; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.DiscontinuityReason; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.analytics.AnalyticsListener.EventTime; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; + +/** + * Manager for active playback sessions. + * + *

The manager keeps track of the association between window index and/or media period id to + * session identifier. + */ +public interface PlaybackSessionManager { + + /** A listener for session updates. */ + interface Listener { + + /** + * Called when a new session is created as a result of {@link #updateSessions(EventTime)}. + * + * @param eventTime The {@link EventTime} at which the session is created. + * @param sessionId The identifier of the new session. + */ + void onSessionCreated(EventTime eventTime, String sessionId); + + /** + * Called when a session becomes active, i.e. playing in the foreground. + * + * @param eventTime The {@link EventTime} at which the session becomes active. + * @param sessionId The identifier of the session. + */ + void onSessionActive(EventTime eventTime, String sessionId); + + /** + * Called when a session is interrupted by ad playback. + * + * @param eventTime The {@link EventTime} at which the ad playback starts. + * @param contentSessionId The session identifier of the content session. + * @param adSessionId The identifier of the ad session. + */ + void onAdPlaybackStarted(EventTime eventTime, String contentSessionId, String adSessionId); + + /** + * Called when a session is permanently finished. + * + * @param eventTime The {@link EventTime} at which the session finished. + * @param sessionId The identifier of the finished session. + * @param automaticTransitionToNextPlayback Whether the session finished because of an automatic + * transition to the next playback item. + */ + void onSessionFinished( + EventTime eventTime, String sessionId, boolean automaticTransitionToNextPlayback); + } + + /** + * Sets the listener to be notified of session updates. Must be called before the session manager + * is used. + * + * @param listener The {@link Listener} to be notified of session updates. + */ + void setListener(Listener listener); + + /** + * Returns the session identifier for the given media period id. + * + *

Note that this will reserve a new session identifier if it doesn't exist yet, but will not + * call any {@link Listener} callbacks. + * + * @param timeline The timeline, {@code mediaPeriodId} is part of. + * @param mediaPeriodId A {@link MediaPeriodId}. + */ + String getSessionForMediaPeriodId(Timeline timeline, MediaPeriodId mediaPeriodId); + + /** + * Returns whether an event time belong to a session. + * + * @param eventTime The {@link EventTime}. + * @param sessionId A session identifier. + * @return Whether the event belongs to the specified session. + */ + boolean belongsToSession(EventTime eventTime, String sessionId); + + /** + * Updates or creates sessions based on a player {@link EventTime}. + * + * @param eventTime The {@link EventTime}. + */ + void updateSessions(EventTime eventTime); + + /** + * Updates the session associations to a new timeline. + * + * @param eventTime The event time with the timeline change. + */ + void handleTimelineUpdate(EventTime eventTime); + + /** + * Handles a position discontinuity. + * + * @param eventTime The event time of the position discontinuity. + * @param reason The {@link DiscontinuityReason}. + */ + void handlePositionDiscontinuity(EventTime eventTime, @DiscontinuityReason int reason); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackStats.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackStats.java new file mode 100644 index 0000000000..eef0f6e7ce --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackStats.java @@ -0,0 +1,980 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.analytics; + +import android.os.SystemClock; +import android.util.Pair; +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.analytics.AnalyticsListener.EventTime; +import java.lang.annotation.Documented; +import java.lang.annotation.ElementType; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.lang.annotation.Target; +import java.util.Collections; +import java.util.List; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** Statistics about playbacks. */ +public final class PlaybackStats { + + /** + * State of a playback. One of {@link #PLAYBACK_STATE_NOT_STARTED}, {@link + * #PLAYBACK_STATE_JOINING_FOREGROUND}, {@link #PLAYBACK_STATE_JOINING_BACKGROUND}, {@link + * #PLAYBACK_STATE_PLAYING}, {@link #PLAYBACK_STATE_PAUSED}, {@link #PLAYBACK_STATE_SEEKING}, + * {@link #PLAYBACK_STATE_BUFFERING}, {@link #PLAYBACK_STATE_PAUSED_BUFFERING}, {@link + * #PLAYBACK_STATE_SEEK_BUFFERING}, {@link #PLAYBACK_STATE_SUPPRESSED}, {@link + * #PLAYBACK_STATE_SUPPRESSED_BUFFERING}, {@link #PLAYBACK_STATE_ENDED}, {@link + * #PLAYBACK_STATE_STOPPED}, {@link #PLAYBACK_STATE_FAILED}, {@link + * #PLAYBACK_STATE_INTERRUPTED_BY_AD} or {@link #PLAYBACK_STATE_ABANDONED}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @Target({ElementType.TYPE_PARAMETER, ElementType.TYPE_USE}) + @IntDef({ + PLAYBACK_STATE_NOT_STARTED, + PLAYBACK_STATE_JOINING_BACKGROUND, + PLAYBACK_STATE_JOINING_FOREGROUND, + PLAYBACK_STATE_PLAYING, + PLAYBACK_STATE_PAUSED, + PLAYBACK_STATE_SEEKING, + PLAYBACK_STATE_BUFFERING, + PLAYBACK_STATE_PAUSED_BUFFERING, + PLAYBACK_STATE_SEEK_BUFFERING, + PLAYBACK_STATE_SUPPRESSED, + PLAYBACK_STATE_SUPPRESSED_BUFFERING, + PLAYBACK_STATE_ENDED, + PLAYBACK_STATE_STOPPED, + PLAYBACK_STATE_FAILED, + PLAYBACK_STATE_INTERRUPTED_BY_AD, + PLAYBACK_STATE_ABANDONED + }) + @interface PlaybackState {} + /** Playback has not started (initial state). */ + public static final int PLAYBACK_STATE_NOT_STARTED = 0; + /** Playback is buffering in the background for initial playback start. */ + public static final int PLAYBACK_STATE_JOINING_BACKGROUND = 1; + /** Playback is buffering in the foreground for initial playback start. */ + public static final int PLAYBACK_STATE_JOINING_FOREGROUND = 2; + /** Playback is actively playing. */ + public static final int PLAYBACK_STATE_PLAYING = 3; + /** Playback is paused but ready to play. */ + public static final int PLAYBACK_STATE_PAUSED = 4; + /** Playback is handling a seek. */ + public static final int PLAYBACK_STATE_SEEKING = 5; + /** Playback is buffering to resume active playback. */ + public static final int PLAYBACK_STATE_BUFFERING = 6; + /** Playback is buffering while paused. */ + public static final int PLAYBACK_STATE_PAUSED_BUFFERING = 7; + /** Playback is buffering after a seek. */ + public static final int PLAYBACK_STATE_SEEK_BUFFERING = 8; + /** Playback is suppressed (e.g. due to audio focus loss). */ + public static final int PLAYBACK_STATE_SUPPRESSED = 9; + /** Playback is suppressed (e.g. due to audio focus loss) while buffering to resume a playback. */ + public static final int PLAYBACK_STATE_SUPPRESSED_BUFFERING = 10; + /** Playback has reached the end of the media. */ + public static final int PLAYBACK_STATE_ENDED = 11; + /** Playback is stopped and can be restarted. */ + public static final int PLAYBACK_STATE_STOPPED = 12; + /** Playback is stopped due a fatal error and can be retried. */ + public static final int PLAYBACK_STATE_FAILED = 13; + /** Playback is interrupted by an ad. */ + public static final int PLAYBACK_STATE_INTERRUPTED_BY_AD = 14; + /** Playback is abandoned before reaching the end of the media. */ + public static final int PLAYBACK_STATE_ABANDONED = 15; + /** Total number of playback states. */ + /* package */ static final int PLAYBACK_STATE_COUNT = 16; + + /** Empty playback stats. */ + public static final PlaybackStats EMPTY = merge(/* nothing */ ); + + /** + * Returns the combined {@link PlaybackStats} for all input {@link PlaybackStats}. + * + *

Note that the full history of events is not kept as the history only makes sense in the + * context of a single playback. + * + * @param playbackStats Array of {@link PlaybackStats} to combine. + * @return The combined {@link PlaybackStats}. + */ + public static PlaybackStats merge(PlaybackStats... playbackStats) { + int playbackCount = 0; + long[] playbackStateDurationsMs = new long[PLAYBACK_STATE_COUNT]; + long firstReportedTimeMs = C.TIME_UNSET; + int foregroundPlaybackCount = 0; + int abandonedBeforeReadyCount = 0; + int endedCount = 0; + int backgroundJoiningCount = 0; + long totalValidJoinTimeMs = C.TIME_UNSET; + int validJoinTimeCount = 0; + int totalPauseCount = 0; + int totalPauseBufferCount = 0; + int totalSeekCount = 0; + int totalRebufferCount = 0; + long maxRebufferTimeMs = C.TIME_UNSET; + int adPlaybackCount = 0; + long totalVideoFormatHeightTimeMs = 0; + long totalVideoFormatHeightTimeProduct = 0; + long totalVideoFormatBitrateTimeMs = 0; + long totalVideoFormatBitrateTimeProduct = 0; + long totalAudioFormatTimeMs = 0; + long totalAudioFormatBitrateTimeProduct = 0; + int initialVideoFormatHeightCount = 0; + int initialVideoFormatBitrateCount = 0; + int totalInitialVideoFormatHeight = C.LENGTH_UNSET; + long totalInitialVideoFormatBitrate = C.LENGTH_UNSET; + int initialAudioFormatBitrateCount = 0; + long totalInitialAudioFormatBitrate = C.LENGTH_UNSET; + long totalBandwidthTimeMs = 0; + long totalBandwidthBytes = 0; + long totalDroppedFrames = 0; + long totalAudioUnderruns = 0; + int fatalErrorPlaybackCount = 0; + int fatalErrorCount = 0; + int nonFatalErrorCount = 0; + for (PlaybackStats stats : playbackStats) { + playbackCount += stats.playbackCount; + for (int i = 0; i < PLAYBACK_STATE_COUNT; i++) { + playbackStateDurationsMs[i] += stats.playbackStateDurationsMs[i]; + } + if (firstReportedTimeMs == C.TIME_UNSET) { + firstReportedTimeMs = stats.firstReportedTimeMs; + } else if (stats.firstReportedTimeMs != C.TIME_UNSET) { + firstReportedTimeMs = Math.min(firstReportedTimeMs, stats.firstReportedTimeMs); + } + foregroundPlaybackCount += stats.foregroundPlaybackCount; + abandonedBeforeReadyCount += stats.abandonedBeforeReadyCount; + endedCount += stats.endedCount; + backgroundJoiningCount += stats.backgroundJoiningCount; + if (totalValidJoinTimeMs == C.TIME_UNSET) { + totalValidJoinTimeMs = stats.totalValidJoinTimeMs; + } else if (stats.totalValidJoinTimeMs != C.TIME_UNSET) { + totalValidJoinTimeMs += stats.totalValidJoinTimeMs; + } + validJoinTimeCount += stats.validJoinTimeCount; + totalPauseCount += stats.totalPauseCount; + totalPauseBufferCount += stats.totalPauseBufferCount; + totalSeekCount += stats.totalSeekCount; + totalRebufferCount += stats.totalRebufferCount; + if (maxRebufferTimeMs == C.TIME_UNSET) { + maxRebufferTimeMs = stats.maxRebufferTimeMs; + } else if (stats.maxRebufferTimeMs != C.TIME_UNSET) { + maxRebufferTimeMs = Math.max(maxRebufferTimeMs, stats.maxRebufferTimeMs); + } + adPlaybackCount += stats.adPlaybackCount; + totalVideoFormatHeightTimeMs += stats.totalVideoFormatHeightTimeMs; + totalVideoFormatHeightTimeProduct += stats.totalVideoFormatHeightTimeProduct; + totalVideoFormatBitrateTimeMs += stats.totalVideoFormatBitrateTimeMs; + totalVideoFormatBitrateTimeProduct += stats.totalVideoFormatBitrateTimeProduct; + totalAudioFormatTimeMs += stats.totalAudioFormatTimeMs; + totalAudioFormatBitrateTimeProduct += stats.totalAudioFormatBitrateTimeProduct; + initialVideoFormatHeightCount += stats.initialVideoFormatHeightCount; + initialVideoFormatBitrateCount += stats.initialVideoFormatBitrateCount; + if (totalInitialVideoFormatHeight == C.LENGTH_UNSET) { + totalInitialVideoFormatHeight = stats.totalInitialVideoFormatHeight; + } else if (stats.totalInitialVideoFormatHeight != C.LENGTH_UNSET) { + totalInitialVideoFormatHeight += stats.totalInitialVideoFormatHeight; + } + if (totalInitialVideoFormatBitrate == C.LENGTH_UNSET) { + totalInitialVideoFormatBitrate = stats.totalInitialVideoFormatBitrate; + } else if (stats.totalInitialVideoFormatBitrate != C.LENGTH_UNSET) { + totalInitialVideoFormatBitrate += stats.totalInitialVideoFormatBitrate; + } + initialAudioFormatBitrateCount += stats.initialAudioFormatBitrateCount; + if (totalInitialAudioFormatBitrate == C.LENGTH_UNSET) { + totalInitialAudioFormatBitrate = stats.totalInitialAudioFormatBitrate; + } else if (stats.totalInitialAudioFormatBitrate != C.LENGTH_UNSET) { + totalInitialAudioFormatBitrate += stats.totalInitialAudioFormatBitrate; + } + totalBandwidthTimeMs += stats.totalBandwidthTimeMs; + totalBandwidthBytes += stats.totalBandwidthBytes; + totalDroppedFrames += stats.totalDroppedFrames; + totalAudioUnderruns += stats.totalAudioUnderruns; + fatalErrorPlaybackCount += stats.fatalErrorPlaybackCount; + fatalErrorCount += stats.fatalErrorCount; + nonFatalErrorCount += stats.nonFatalErrorCount; + } + return new PlaybackStats( + playbackCount, + playbackStateDurationsMs, + /* playbackStateHistory */ Collections.emptyList(), + /* mediaTimeHistory= */ Collections.emptyList(), + firstReportedTimeMs, + foregroundPlaybackCount, + abandonedBeforeReadyCount, + endedCount, + backgroundJoiningCount, + totalValidJoinTimeMs, + validJoinTimeCount, + totalPauseCount, + totalPauseBufferCount, + totalSeekCount, + totalRebufferCount, + maxRebufferTimeMs, + adPlaybackCount, + /* videoFormatHistory= */ Collections.emptyList(), + /* audioFormatHistory= */ Collections.emptyList(), + totalVideoFormatHeightTimeMs, + totalVideoFormatHeightTimeProduct, + totalVideoFormatBitrateTimeMs, + totalVideoFormatBitrateTimeProduct, + totalAudioFormatTimeMs, + totalAudioFormatBitrateTimeProduct, + initialVideoFormatHeightCount, + initialVideoFormatBitrateCount, + totalInitialVideoFormatHeight, + totalInitialVideoFormatBitrate, + initialAudioFormatBitrateCount, + totalInitialAudioFormatBitrate, + totalBandwidthTimeMs, + totalBandwidthBytes, + totalDroppedFrames, + totalAudioUnderruns, + fatalErrorPlaybackCount, + fatalErrorCount, + nonFatalErrorCount, + /* fatalErrorHistory= */ Collections.emptyList(), + /* nonFatalErrorHistory= */ Collections.emptyList()); + } + + /** The number of individual playbacks for which these stats were collected. */ + public final int playbackCount; + + // Playback state stats. + + /** + * The playback state history as ordered pairs of the {@link EventTime} at which a state became + * active and the {@link PlaybackState}. + */ + public final List> playbackStateHistory; + /** + * The media time history as an ordered list of long[2] arrays with [0] being the realtime as + * returned by {@code SystemClock.elapsedRealtime()} and [1] being the media time at this + * realtime, in milliseconds. + */ + public final List mediaTimeHistory; + /** + * The elapsed real-time as returned by {@code SystemClock.elapsedRealtime()} of the first + * reported playback event, or {@link C#TIME_UNSET} if no event has been reported. + */ + public final long firstReportedTimeMs; + /** The number of playbacks which were the active foreground playback at some point. */ + public final int foregroundPlaybackCount; + /** The number of playbacks which were abandoned before they were ready to play. */ + public final int abandonedBeforeReadyCount; + /** The number of playbacks which reached the ended state at least once. */ + public final int endedCount; + /** The number of playbacks which were pre-buffered in the background. */ + public final int backgroundJoiningCount; + /** + * The total time spent joining the playback, in milliseconds, or {@link C#TIME_UNSET} if no valid + * join time could be determined. + * + *

Note that this does not include background joining time. A join time may be invalid if the + * playback never reached {@link #PLAYBACK_STATE_PLAYING} or {@link #PLAYBACK_STATE_PAUSED}, or + * joining was interrupted by a seek, stop, or error state. + */ + public final long totalValidJoinTimeMs; + /** + * The number of playbacks with a valid join time as documented in {@link #totalValidJoinTimeMs}. + */ + public final int validJoinTimeCount; + /** The total number of times a playback has been paused. */ + public final int totalPauseCount; + /** The total number of times a playback has been paused while rebuffering. */ + public final int totalPauseBufferCount; + /** + * The total number of times a seek occurred. This includes seeks happening before playback + * resumed after another seek. + */ + public final int totalSeekCount; + /** + * The total number of times a rebuffer occurred. This excludes initial joining and buffering + * after seek. + */ + public final int totalRebufferCount; + /** + * The maximum time spent during a single rebuffer, in milliseconds, or {@link C#TIME_UNSET} if no + * rebuffer occurred. + */ + public final long maxRebufferTimeMs; + /** The number of ad playbacks. */ + public final int adPlaybackCount; + + // Format stats. + + /** + * The video format history as ordered pairs of the {@link EventTime} at which a format started + * being used and the {@link Format}. The {@link Format} may be null if no video format was used. + */ + public final List> videoFormatHistory; + /** + * The audio format history as ordered pairs of the {@link EventTime} at which a format started + * being used and the {@link Format}. The {@link Format} may be null if no audio format was used. + */ + public final List> audioFormatHistory; + /** The total media time for which video format height data is available, in milliseconds. */ + public final long totalVideoFormatHeightTimeMs; + /** + * The accumulated sum of all video format heights, in pixels, times the time the format was used + * for playback, in milliseconds. + */ + public final long totalVideoFormatHeightTimeProduct; + /** The total media time for which video format bitrate data is available, in milliseconds. */ + public final long totalVideoFormatBitrateTimeMs; + /** + * The accumulated sum of all video format bitrates, in bits per second, times the time the format + * was used for playback, in milliseconds. + */ + public final long totalVideoFormatBitrateTimeProduct; + /** The total media time for which audio format data is available, in milliseconds. */ + public final long totalAudioFormatTimeMs; + /** + * The accumulated sum of all audio format bitrates, in bits per second, times the time the format + * was used for playback, in milliseconds. + */ + public final long totalAudioFormatBitrateTimeProduct; + /** The number of playbacks with initial video format height data. */ + public final int initialVideoFormatHeightCount; + /** The number of playbacks with initial video format bitrate data. */ + public final int initialVideoFormatBitrateCount; + /** + * The total initial video format height for all playbacks, in pixels, or {@link C#LENGTH_UNSET} + * if no initial video format data is available. + */ + public final int totalInitialVideoFormatHeight; + /** + * The total initial video format bitrate for all playbacks, in bits per second, or {@link + * C#LENGTH_UNSET} if no initial video format data is available. + */ + public final long totalInitialVideoFormatBitrate; + /** The number of playbacks with initial audio format bitrate data. */ + public final int initialAudioFormatBitrateCount; + /** + * The total initial audio format bitrate for all playbacks, in bits per second, or {@link + * C#LENGTH_UNSET} if no initial audio format data is available. + */ + public final long totalInitialAudioFormatBitrate; + + // Bandwidth stats. + + /** The total time for which bandwidth measurement data is available, in milliseconds. */ + public final long totalBandwidthTimeMs; + /** The total bytes transferred during {@link #totalBandwidthTimeMs}. */ + public final long totalBandwidthBytes; + + // Renderer quality stats. + + /** The total number of dropped video frames. */ + public final long totalDroppedFrames; + /** The total number of audio underruns. */ + public final long totalAudioUnderruns; + + // Error stats. + + /** + * The total number of playback with at least one fatal error. Errors are fatal if playback + * stopped due to this error. + */ + public final int fatalErrorPlaybackCount; + /** The total number of fatal errors. Errors are fatal if playback stopped due to this error. */ + public final int fatalErrorCount; + /** + * The total number of non-fatal errors. Error are non-fatal if playback can recover from the + * error without stopping. + */ + public final int nonFatalErrorCount; + /** + * The history of fatal errors as ordered pairs of the {@link EventTime} at which an error + * occurred and the error. Errors are fatal if playback stopped due to this error. + */ + public final List> fatalErrorHistory; + /** + * The history of non-fatal errors as ordered pairs of the {@link EventTime} at which an error + * occurred and the error. Error are non-fatal if playback can recover from the error without + * stopping. + */ + public final List> nonFatalErrorHistory; + + private final long[] playbackStateDurationsMs; + + /* package */ PlaybackStats( + int playbackCount, + long[] playbackStateDurationsMs, + List> playbackStateHistory, + List mediaTimeHistory, + long firstReportedTimeMs, + int foregroundPlaybackCount, + int abandonedBeforeReadyCount, + int endedCount, + int backgroundJoiningCount, + long totalValidJoinTimeMs, + int validJoinTimeCount, + int totalPauseCount, + int totalPauseBufferCount, + int totalSeekCount, + int totalRebufferCount, + long maxRebufferTimeMs, + int adPlaybackCount, + List> videoFormatHistory, + List> audioFormatHistory, + long totalVideoFormatHeightTimeMs, + long totalVideoFormatHeightTimeProduct, + long totalVideoFormatBitrateTimeMs, + long totalVideoFormatBitrateTimeProduct, + long totalAudioFormatTimeMs, + long totalAudioFormatBitrateTimeProduct, + int initialVideoFormatHeightCount, + int initialVideoFormatBitrateCount, + int totalInitialVideoFormatHeight, + long totalInitialVideoFormatBitrate, + int initialAudioFormatBitrateCount, + long totalInitialAudioFormatBitrate, + long totalBandwidthTimeMs, + long totalBandwidthBytes, + long totalDroppedFrames, + long totalAudioUnderruns, + int fatalErrorPlaybackCount, + int fatalErrorCount, + int nonFatalErrorCount, + List> fatalErrorHistory, + List> nonFatalErrorHistory) { + this.playbackCount = playbackCount; + this.playbackStateDurationsMs = playbackStateDurationsMs; + this.playbackStateHistory = Collections.unmodifiableList(playbackStateHistory); + this.mediaTimeHistory = Collections.unmodifiableList(mediaTimeHistory); + this.firstReportedTimeMs = firstReportedTimeMs; + this.foregroundPlaybackCount = foregroundPlaybackCount; + this.abandonedBeforeReadyCount = abandonedBeforeReadyCount; + this.endedCount = endedCount; + this.backgroundJoiningCount = backgroundJoiningCount; + this.totalValidJoinTimeMs = totalValidJoinTimeMs; + this.validJoinTimeCount = validJoinTimeCount; + this.totalPauseCount = totalPauseCount; + this.totalPauseBufferCount = totalPauseBufferCount; + this.totalSeekCount = totalSeekCount; + this.totalRebufferCount = totalRebufferCount; + this.maxRebufferTimeMs = maxRebufferTimeMs; + this.adPlaybackCount = adPlaybackCount; + this.videoFormatHistory = Collections.unmodifiableList(videoFormatHistory); + this.audioFormatHistory = Collections.unmodifiableList(audioFormatHistory); + this.totalVideoFormatHeightTimeMs = totalVideoFormatHeightTimeMs; + this.totalVideoFormatHeightTimeProduct = totalVideoFormatHeightTimeProduct; + this.totalVideoFormatBitrateTimeMs = totalVideoFormatBitrateTimeMs; + this.totalVideoFormatBitrateTimeProduct = totalVideoFormatBitrateTimeProduct; + this.totalAudioFormatTimeMs = totalAudioFormatTimeMs; + this.totalAudioFormatBitrateTimeProduct = totalAudioFormatBitrateTimeProduct; + this.initialVideoFormatHeightCount = initialVideoFormatHeightCount; + this.initialVideoFormatBitrateCount = initialVideoFormatBitrateCount; + this.totalInitialVideoFormatHeight = totalInitialVideoFormatHeight; + this.totalInitialVideoFormatBitrate = totalInitialVideoFormatBitrate; + this.initialAudioFormatBitrateCount = initialAudioFormatBitrateCount; + this.totalInitialAudioFormatBitrate = totalInitialAudioFormatBitrate; + this.totalBandwidthTimeMs = totalBandwidthTimeMs; + this.totalBandwidthBytes = totalBandwidthBytes; + this.totalDroppedFrames = totalDroppedFrames; + this.totalAudioUnderruns = totalAudioUnderruns; + this.fatalErrorPlaybackCount = fatalErrorPlaybackCount; + this.fatalErrorCount = fatalErrorCount; + this.nonFatalErrorCount = nonFatalErrorCount; + this.fatalErrorHistory = Collections.unmodifiableList(fatalErrorHistory); + this.nonFatalErrorHistory = Collections.unmodifiableList(nonFatalErrorHistory); + } + + /** + * Returns the total time spent in a given {@link PlaybackState}, in milliseconds. + * + * @param playbackState A {@link PlaybackState}. + * @return Total spent in the given playback state, in milliseconds + */ + public long getPlaybackStateDurationMs(@PlaybackState int playbackState) { + return playbackStateDurationsMs[playbackState]; + } + + /** + * Returns the {@link PlaybackState} at the given time. + * + * @param realtimeMs The time as returned by {@link SystemClock#elapsedRealtime()}. + * @return The {@link PlaybackState} at that time, or {@link #PLAYBACK_STATE_NOT_STARTED} if the + * given time is before the first known playback state in the history. + */ + public @PlaybackState int getPlaybackStateAtTime(long realtimeMs) { + @PlaybackState int state = PLAYBACK_STATE_NOT_STARTED; + for (Pair timeAndState : playbackStateHistory) { + if (timeAndState.first.realtimeMs > realtimeMs) { + break; + } + state = timeAndState.second; + } + return state; + } + + /** + * Returns the estimated media time at the given realtime, in milliseconds, or {@link + * C#TIME_UNSET} if the media time history is unknown. + * + * @param realtimeMs The realtime as returned by {@link SystemClock#elapsedRealtime()}. + * @return The estimated media time in milliseconds at this realtime, {@link C#TIME_UNSET} if no + * estimate can be given. + */ + public long getMediaTimeMsAtRealtimeMs(long realtimeMs) { + if (mediaTimeHistory.isEmpty()) { + return C.TIME_UNSET; + } + int nextIndex = 0; + while (nextIndex < mediaTimeHistory.size() + && mediaTimeHistory.get(nextIndex)[0] <= realtimeMs) { + nextIndex++; + } + if (nextIndex == 0) { + return mediaTimeHistory.get(0)[1]; + } + if (nextIndex == mediaTimeHistory.size()) { + return mediaTimeHistory.get(mediaTimeHistory.size() - 1)[1]; + } + long prevRealtimeMs = mediaTimeHistory.get(nextIndex - 1)[0]; + long prevMediaTimeMs = mediaTimeHistory.get(nextIndex - 1)[1]; + long nextRealtimeMs = mediaTimeHistory.get(nextIndex)[0]; + long nextMediaTimeMs = mediaTimeHistory.get(nextIndex)[1]; + long realtimeDurationMs = nextRealtimeMs - prevRealtimeMs; + if (realtimeDurationMs == 0) { + return prevMediaTimeMs; + } + float fraction = (float) (realtimeMs - prevRealtimeMs) / realtimeDurationMs; + return prevMediaTimeMs + (long) ((nextMediaTimeMs - prevMediaTimeMs) * fraction); + } + + /** + * Returns the mean time spent joining the playback, in milliseconds, or {@link C#TIME_UNSET} if + * no valid join time is available. Only includes playbacks with valid join times as documented in + * {@link #totalValidJoinTimeMs}. + */ + public long getMeanJoinTimeMs() { + return validJoinTimeCount == 0 ? C.TIME_UNSET : totalValidJoinTimeMs / validJoinTimeCount; + } + + /** + * Returns the total time spent joining the playback in foreground, in milliseconds. This does + * include invalid join times where the playback never reached {@link #PLAYBACK_STATE_PLAYING} or + * {@link #PLAYBACK_STATE_PAUSED}, or joining was interrupted by a seek, stop, or error state. + */ + public long getTotalJoinTimeMs() { + return getPlaybackStateDurationMs(PLAYBACK_STATE_JOINING_FOREGROUND); + } + + /** Returns the total time spent actively playing, in milliseconds. */ + public long getTotalPlayTimeMs() { + return getPlaybackStateDurationMs(PLAYBACK_STATE_PLAYING); + } + + /** + * Returns the mean time spent actively playing per foreground playback, in milliseconds, or + * {@link C#TIME_UNSET} if no playback has been in foreground. + */ + public long getMeanPlayTimeMs() { + return foregroundPlaybackCount == 0 + ? C.TIME_UNSET + : getTotalPlayTimeMs() / foregroundPlaybackCount; + } + + /** Returns the total time spent in a paused state, in milliseconds. */ + public long getTotalPausedTimeMs() { + return getPlaybackStateDurationMs(PLAYBACK_STATE_PAUSED) + + getPlaybackStateDurationMs(PLAYBACK_STATE_PAUSED_BUFFERING); + } + + /** + * Returns the mean time spent in a paused state per foreground playback, in milliseconds, or + * {@link C#TIME_UNSET} if no playback has been in foreground. + */ + public long getMeanPausedTimeMs() { + return foregroundPlaybackCount == 0 + ? C.TIME_UNSET + : getTotalPausedTimeMs() / foregroundPlaybackCount; + } + + /** + * Returns the total time spent rebuffering, in milliseconds. This excludes initial join times, + * buffer times after a seek and buffering while paused. + */ + public long getTotalRebufferTimeMs() { + return getPlaybackStateDurationMs(PLAYBACK_STATE_BUFFERING); + } + + /** + * Returns the mean time spent rebuffering per foreground playback, in milliseconds, or {@link + * C#TIME_UNSET} if no playback has been in foreground. This excludes initial join times, buffer + * times after a seek and buffering while paused. + */ + public long getMeanRebufferTimeMs() { + return foregroundPlaybackCount == 0 + ? C.TIME_UNSET + : getTotalRebufferTimeMs() / foregroundPlaybackCount; + } + + /** + * Returns the mean time spent during a single rebuffer, in milliseconds, or {@link C#TIME_UNSET} + * if no rebuffer was recorded. This excludes initial join times and buffer times after a seek. + */ + public long getMeanSingleRebufferTimeMs() { + return totalRebufferCount == 0 + ? C.TIME_UNSET + : (getPlaybackStateDurationMs(PLAYBACK_STATE_BUFFERING) + + getPlaybackStateDurationMs(PLAYBACK_STATE_PAUSED_BUFFERING)) + / totalRebufferCount; + } + + /** + * Returns the total time spent from the start of a seek until playback is ready again, in + * milliseconds. + */ + public long getTotalSeekTimeMs() { + return getPlaybackStateDurationMs(PLAYBACK_STATE_SEEKING) + + getPlaybackStateDurationMs(PLAYBACK_STATE_SEEK_BUFFERING); + } + + /** + * Returns the mean time spent per foreground playback from the start of a seek until playback is + * ready again, in milliseconds, or {@link C#TIME_UNSET} if no playback has been in foreground. + */ + public long getMeanSeekTimeMs() { + return foregroundPlaybackCount == 0 + ? C.TIME_UNSET + : getTotalSeekTimeMs() / foregroundPlaybackCount; + } + + /** + * Returns the mean time spent from the start of a single seek until playback is ready again, in + * milliseconds, or {@link C#TIME_UNSET} if no seek occurred. + */ + public long getMeanSingleSeekTimeMs() { + return totalSeekCount == 0 ? C.TIME_UNSET : getTotalSeekTimeMs() / totalSeekCount; + } + + /** + * Returns the total time spent actively waiting for playback, in milliseconds. This includes all + * join times, rebuffer times and seek times, but excludes times without user intention to play, + * e.g. all paused states. + */ + public long getTotalWaitTimeMs() { + return getPlaybackStateDurationMs(PLAYBACK_STATE_JOINING_FOREGROUND) + + getPlaybackStateDurationMs(PLAYBACK_STATE_BUFFERING) + + getPlaybackStateDurationMs(PLAYBACK_STATE_SEEKING) + + getPlaybackStateDurationMs(PLAYBACK_STATE_SEEK_BUFFERING); + } + + /** + * Returns the mean time spent actively waiting for playback per foreground playback, in + * milliseconds, or {@link C#TIME_UNSET} if no playback has been in foreground. This includes all + * join times, rebuffer times and seek times, but excludes times without user intention to play, + * e.g. all paused states. + */ + public long getMeanWaitTimeMs() { + return foregroundPlaybackCount == 0 + ? C.TIME_UNSET + : getTotalWaitTimeMs() / foregroundPlaybackCount; + } + + /** Returns the total time spent playing or actively waiting for playback, in milliseconds. */ + public long getTotalPlayAndWaitTimeMs() { + return getTotalPlayTimeMs() + getTotalWaitTimeMs(); + } + + /** + * Returns the mean time spent playing or actively waiting for playback per foreground playback, + * in milliseconds, or {@link C#TIME_UNSET} if no playback has been in foreground. + */ + public long getMeanPlayAndWaitTimeMs() { + return foregroundPlaybackCount == 0 + ? C.TIME_UNSET + : getTotalPlayAndWaitTimeMs() / foregroundPlaybackCount; + } + + /** Returns the total time covered by any playback state, in milliseconds. */ + public long getTotalElapsedTimeMs() { + long totalTimeMs = 0; + for (int i = 0; i < PLAYBACK_STATE_COUNT; i++) { + totalTimeMs += playbackStateDurationsMs[i]; + } + return totalTimeMs; + } + + /** + * Returns the mean time covered by any playback state per playback, in milliseconds, or {@link + * C#TIME_UNSET} if no playback was recorded. + */ + public long getMeanElapsedTimeMs() { + return playbackCount == 0 ? C.TIME_UNSET : getTotalElapsedTimeMs() / playbackCount; + } + + /** + * Returns the ratio of foreground playbacks which were abandoned before they were ready to play, + * or {@code 0.0} if no playback has been in foreground. + */ + public float getAbandonedBeforeReadyRatio() { + int foregroundAbandonedBeforeReady = + abandonedBeforeReadyCount - (playbackCount - foregroundPlaybackCount); + return foregroundPlaybackCount == 0 + ? 0f + : (float) foregroundAbandonedBeforeReady / foregroundPlaybackCount; + } + + /** + * Returns the ratio of foreground playbacks which reached the ended state at least once, or + * {@code 0.0} if no playback has been in foreground. + */ + public float getEndedRatio() { + return foregroundPlaybackCount == 0 ? 0f : (float) endedCount / foregroundPlaybackCount; + } + + /** + * Returns the mean number of times a playback has been paused per foreground playback, or {@code + * 0.0} if no playback has been in foreground. + */ + public float getMeanPauseCount() { + return foregroundPlaybackCount == 0 ? 0f : (float) totalPauseCount / foregroundPlaybackCount; + } + + /** + * Returns the mean number of times a playback has been paused while rebuffering per foreground + * playback, or {@code 0.0} if no playback has been in foreground. + */ + public float getMeanPauseBufferCount() { + return foregroundPlaybackCount == 0 + ? 0f + : (float) totalPauseBufferCount / foregroundPlaybackCount; + } + + /** + * Returns the mean number of times a seek occurred per foreground playback, or {@code 0.0} if no + * playback has been in foreground. This includes seeks happening before playback resumed after + * another seek. + */ + public float getMeanSeekCount() { + return foregroundPlaybackCount == 0 ? 0f : (float) totalSeekCount / foregroundPlaybackCount; + } + + /** + * Returns the mean number of times a rebuffer occurred per foreground playback, or {@code 0.0} if + * no playback has been in foreground. This excludes initial joining and buffering after seek. + */ + public float getMeanRebufferCount() { + return foregroundPlaybackCount == 0 ? 0f : (float) totalRebufferCount / foregroundPlaybackCount; + } + + /** + * Returns the ratio of wait times to the total time spent playing and waiting, or {@code 0.0} if + * no time was spend playing or waiting. This is equivalent to {@link #getTotalWaitTimeMs()} / + * {@link #getTotalPlayAndWaitTimeMs()} and also to {@link #getJoinTimeRatio()} + {@link + * #getRebufferTimeRatio()} + {@link #getSeekTimeRatio()}. + */ + public float getWaitTimeRatio() { + long playAndWaitTimeMs = getTotalPlayAndWaitTimeMs(); + return playAndWaitTimeMs == 0 ? 0f : (float) getTotalWaitTimeMs() / playAndWaitTimeMs; + } + + /** + * Returns the ratio of foreground join time to the total time spent playing and waiting, or + * {@code 0.0} if no time was spend playing or waiting. This is equivalent to {@link + * #getTotalJoinTimeMs()} / {@link #getTotalPlayAndWaitTimeMs()}. + */ + public float getJoinTimeRatio() { + long playAndWaitTimeMs = getTotalPlayAndWaitTimeMs(); + return playAndWaitTimeMs == 0 ? 0f : (float) getTotalJoinTimeMs() / playAndWaitTimeMs; + } + + /** + * Returns the ratio of rebuffer time to the total time spent playing and waiting, or {@code 0.0} + * if no time was spend playing or waiting. This is equivalent to {@link + * #getTotalRebufferTimeMs()} / {@link #getTotalPlayAndWaitTimeMs()}. + */ + public float getRebufferTimeRatio() { + long playAndWaitTimeMs = getTotalPlayAndWaitTimeMs(); + return playAndWaitTimeMs == 0 ? 0f : (float) getTotalRebufferTimeMs() / playAndWaitTimeMs; + } + + /** + * Returns the ratio of seek time to the total time spent playing and waiting, or {@code 0.0} if + * no time was spend playing or waiting. This is equivalent to {@link #getTotalSeekTimeMs()} / + * {@link #getTotalPlayAndWaitTimeMs()}. + */ + public float getSeekTimeRatio() { + long playAndWaitTimeMs = getTotalPlayAndWaitTimeMs(); + return playAndWaitTimeMs == 0 ? 0f : (float) getTotalSeekTimeMs() / playAndWaitTimeMs; + } + + /** + * Returns the rate of rebuffer events, in rebuffers per play time second, or {@code 0.0} if no + * time was spend playing. This is equivalent to 1.0 / {@link #getMeanTimeBetweenRebuffers()}. + */ + public float getRebufferRate() { + long playTimeMs = getTotalPlayTimeMs(); + return playTimeMs == 0 ? 0f : 1000f * totalRebufferCount / playTimeMs; + } + + /** + * Returns the mean play time between rebuffer events, in seconds. This is equivalent to 1.0 / + * {@link #getRebufferRate()}. Note that this may return {@link Float#POSITIVE_INFINITY}. + */ + public float getMeanTimeBetweenRebuffers() { + return 1f / getRebufferRate(); + } + + /** + * Returns the mean initial video format height, in pixels, or {@link C#LENGTH_UNSET} if no video + * format data is available. + */ + public int getMeanInitialVideoFormatHeight() { + return initialVideoFormatHeightCount == 0 + ? C.LENGTH_UNSET + : totalInitialVideoFormatHeight / initialVideoFormatHeightCount; + } + + /** + * Returns the mean initial video format bitrate, in bits per second, or {@link C#LENGTH_UNSET} if + * no video format data is available. + */ + public int getMeanInitialVideoFormatBitrate() { + return initialVideoFormatBitrateCount == 0 + ? C.LENGTH_UNSET + : (int) (totalInitialVideoFormatBitrate / initialVideoFormatBitrateCount); + } + + /** + * Returns the mean initial audio format bitrate, in bits per second, or {@link C#LENGTH_UNSET} if + * no audio format data is available. + */ + public int getMeanInitialAudioFormatBitrate() { + return initialAudioFormatBitrateCount == 0 + ? C.LENGTH_UNSET + : (int) (totalInitialAudioFormatBitrate / initialAudioFormatBitrateCount); + } + + /** + * Returns the mean video format height, in pixels, or {@link C#LENGTH_UNSET} if no video format + * data is available. This is a weighted average taking the time the format was used for playback + * into account. + */ + public int getMeanVideoFormatHeight() { + return totalVideoFormatHeightTimeMs == 0 + ? C.LENGTH_UNSET + : (int) (totalVideoFormatHeightTimeProduct / totalVideoFormatHeightTimeMs); + } + + /** + * Returns the mean video format bitrate, in bits per second, or {@link C#LENGTH_UNSET} if no + * video format data is available. This is a weighted average taking the time the format was used + * for playback into account. + */ + public int getMeanVideoFormatBitrate() { + return totalVideoFormatBitrateTimeMs == 0 + ? C.LENGTH_UNSET + : (int) (totalVideoFormatBitrateTimeProduct / totalVideoFormatBitrateTimeMs); + } + + /** + * Returns the mean audio format bitrate, in bits per second, or {@link C#LENGTH_UNSET} if no + * audio format data is available. This is a weighted average taking the time the format was used + * for playback into account. + */ + public int getMeanAudioFormatBitrate() { + return totalAudioFormatTimeMs == 0 + ? C.LENGTH_UNSET + : (int) (totalAudioFormatBitrateTimeProduct / totalAudioFormatTimeMs); + } + + /** + * Returns the mean network bandwidth based on transfer measurements, in bits per second, or + * {@link C#LENGTH_UNSET} if no transfer data is available. + */ + public int getMeanBandwidth() { + return totalBandwidthTimeMs == 0 + ? C.LENGTH_UNSET + : (int) (totalBandwidthBytes * 8000 / totalBandwidthTimeMs); + } + + /** + * Returns the mean rate at which video frames are dropped, in dropped frames per play time + * second, or {@code 0.0} if no time was spent playing. + */ + public float getDroppedFramesRate() { + long playTimeMs = getTotalPlayTimeMs(); + return playTimeMs == 0 ? 0f : 1000f * totalDroppedFrames / playTimeMs; + } + + /** + * Returns the mean rate at which audio underruns occurred, in underruns per play time second, or + * {@code 0.0} if no time was spent playing. + */ + public float getAudioUnderrunRate() { + long playTimeMs = getTotalPlayTimeMs(); + return playTimeMs == 0 ? 0f : 1000f * totalAudioUnderruns / playTimeMs; + } + + /** + * Returns the ratio of foreground playbacks which experienced fatal errors, or {@code 0.0} if no + * playback has been in foreground. + */ + public float getFatalErrorRatio() { + return foregroundPlaybackCount == 0 + ? 0f + : (float) fatalErrorPlaybackCount / foregroundPlaybackCount; + } + + /** + * Returns the rate of fatal errors, in errors per play time second, or {@code 0.0} if no time was + * spend playing. This is equivalent to 1.0 / {@link #getMeanTimeBetweenFatalErrors()}. + */ + public float getFatalErrorRate() { + long playTimeMs = getTotalPlayTimeMs(); + return playTimeMs == 0 ? 0f : 1000f * fatalErrorCount / playTimeMs; + } + + /** + * Returns the mean play time between fatal errors, in seconds. This is equivalent to 1.0 / {@link + * #getFatalErrorRate()}. Note that this may return {@link Float#POSITIVE_INFINITY}. + */ + public float getMeanTimeBetweenFatalErrors() { + return 1f / getFatalErrorRate(); + } + + /** + * Returns the mean number of non-fatal errors per foreground playback, or {@code 0.0} if no + * playback has been in foreground. + */ + public float getMeanNonFatalErrorCount() { + return foregroundPlaybackCount == 0 ? 0f : (float) nonFatalErrorCount / foregroundPlaybackCount; + } + + /** + * Returns the rate of non-fatal errors, in errors per play time second, or {@code 0.0} if no time + * was spend playing. This is equivalent to 1.0 / {@link #getMeanTimeBetweenNonFatalErrors()}. + */ + public float getNonFatalErrorRate() { + long playTimeMs = getTotalPlayTimeMs(); + return playTimeMs == 0 ? 0f : 1000f * nonFatalErrorCount / playTimeMs; + } + + /** + * Returns the mean play time between non-fatal errors, in seconds. This is equivalent to 1.0 / + * {@link #getNonFatalErrorRate()}. Note that this may return {@link Float#POSITIVE_INFINITY}. + */ + public float getMeanTimeBetweenNonFatalErrors() { + return 1f / getNonFatalErrorRate(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackStatsListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackStatsListener.java new file mode 100644 index 0000000000..058a3a97c1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/PlaybackStatsListener.java @@ -0,0 +1,1059 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.analytics; + +import android.os.SystemClock; +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline.Period; +import org.mozilla.thirdparty.com.google.android.exoplayer2.analytics.PlaybackStats.PlaybackState; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.LoadEventInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.MediaLoadData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * {@link AnalyticsListener} to gather {@link PlaybackStats} from the player. + * + *

For accurate measurements, the listener should be added to the player before loading media, + * i.e., {@link Player#getPlaybackState()} should be {@link Player#STATE_IDLE}. + * + *

Playback stats are gathered separately for each playback session, i.e. each window in the + * {@link Timeline} and each single ad. + */ +public final class PlaybackStatsListener + implements AnalyticsListener, PlaybackSessionManager.Listener { + + /** A listener for {@link PlaybackStats} updates. */ + public interface Callback { + + /** + * Called when a playback session ends and its {@link PlaybackStats} are ready. + * + * @param eventTime The {@link EventTime} at which the playback session started. Can be used to + * identify the playback session. + * @param playbackStats The {@link PlaybackStats} for the ended playback session. + */ + void onPlaybackStatsReady(EventTime eventTime, PlaybackStats playbackStats); + } + + private final PlaybackSessionManager sessionManager; + private final Map playbackStatsTrackers; + private final Map sessionStartEventTimes; + @Nullable private final Callback callback; + private final boolean keepHistory; + private final Period period; + + private PlaybackStats finishedPlaybackStats; + @Nullable private String activeContentPlayback; + @Nullable private String activeAdPlayback; + private boolean playWhenReady; + @Player.State private int playbackState; + private boolean isSuppressed; + private float playbackSpeed; + + /** + * Creates listener for playback stats. + * + * @param keepHistory Whether the reported {@link PlaybackStats} should keep the full history of + * events. + * @param callback An optional callback for finished {@link PlaybackStats}. + */ + public PlaybackStatsListener(boolean keepHistory, @Nullable Callback callback) { + this.callback = callback; + this.keepHistory = keepHistory; + sessionManager = new DefaultPlaybackSessionManager(); + playbackStatsTrackers = new HashMap<>(); + sessionStartEventTimes = new HashMap<>(); + finishedPlaybackStats = PlaybackStats.EMPTY; + playWhenReady = false; + playbackState = Player.STATE_IDLE; + playbackSpeed = 1f; + period = new Period(); + sessionManager.setListener(this); + } + + /** + * Returns the combined {@link PlaybackStats} for all playback sessions this listener was and is + * listening to. + * + *

Note that these {@link PlaybackStats} will not contain the full history of events. + * + * @return The combined {@link PlaybackStats} for all playback sessions. + */ + public PlaybackStats getCombinedPlaybackStats() { + PlaybackStats[] allPendingPlaybackStats = new PlaybackStats[playbackStatsTrackers.size() + 1]; + allPendingPlaybackStats[0] = finishedPlaybackStats; + int index = 1; + for (PlaybackStatsTracker tracker : playbackStatsTrackers.values()) { + allPendingPlaybackStats[index++] = tracker.build(/* isFinal= */ false); + } + return PlaybackStats.merge(allPendingPlaybackStats); + } + + /** + * Returns the {@link PlaybackStats} for the currently playback session, or null if no session is + * active. + * + * @return {@link PlaybackStats} for the current playback session. + */ + @Nullable + public PlaybackStats getPlaybackStats() { + PlaybackStatsTracker activeStatsTracker = + activeAdPlayback != null + ? playbackStatsTrackers.get(activeAdPlayback) + : activeContentPlayback != null + ? playbackStatsTrackers.get(activeContentPlayback) + : null; + return activeStatsTracker == null ? null : activeStatsTracker.build(/* isFinal= */ false); + } + + /** + * Finishes all pending playback sessions. Should be called when the listener is removed from the + * player or when the player is released. + */ + public void finishAllSessions() { + // TODO: Add AnalyticsListener.onAttachedToPlayer and onDetachedFromPlayer to auto-release with + // an actual EventTime. Should also simplify other cases where the listener needs to be released + // separately from the player. + HashMap trackerCopy = new HashMap<>(playbackStatsTrackers); + EventTime dummyEventTime = + new EventTime( + SystemClock.elapsedRealtime(), + Timeline.EMPTY, + /* windowIndex= */ 0, + /* mediaPeriodId= */ null, + /* eventPlaybackPositionMs= */ 0, + /* currentPlaybackPositionMs= */ 0, + /* totalBufferedDurationMs= */ 0); + for (String session : trackerCopy.keySet()) { + onSessionFinished(dummyEventTime, session, /* automaticTransition= */ false); + } + } + + // PlaybackSessionManager.Listener implementation. + + @Override + public void onSessionCreated(EventTime eventTime, String session) { + PlaybackStatsTracker tracker = new PlaybackStatsTracker(keepHistory, eventTime); + tracker.onPlayerStateChanged( + eventTime, playWhenReady, playbackState, /* belongsToPlayback= */ true); + tracker.onIsSuppressedChanged(eventTime, isSuppressed, /* belongsToPlayback= */ true); + tracker.onPlaybackSpeedChanged(eventTime, playbackSpeed); + playbackStatsTrackers.put(session, tracker); + sessionStartEventTimes.put(session, eventTime); + } + + @Override + public void onSessionActive(EventTime eventTime, String session) { + Assertions.checkNotNull(playbackStatsTrackers.get(session)).onForeground(eventTime); + if (eventTime.mediaPeriodId != null && eventTime.mediaPeriodId.isAd()) { + activeAdPlayback = session; + } else { + activeContentPlayback = session; + } + } + + @Override + public void onAdPlaybackStarted(EventTime eventTime, String contentSession, String adSession) { + Assertions.checkState(Assertions.checkNotNull(eventTime.mediaPeriodId).isAd()); + long contentPositionUs = + eventTime + .timeline + .getPeriodByUid(eventTime.mediaPeriodId.periodUid, period) + .getAdGroupTimeUs(eventTime.mediaPeriodId.adGroupIndex); + EventTime contentEventTime = + new EventTime( + eventTime.realtimeMs, + eventTime.timeline, + eventTime.windowIndex, + new MediaPeriodId( + eventTime.mediaPeriodId.periodUid, + eventTime.mediaPeriodId.windowSequenceNumber, + eventTime.mediaPeriodId.adGroupIndex), + /* eventPlaybackPositionMs= */ C.usToMs(contentPositionUs), + eventTime.currentPlaybackPositionMs, + eventTime.totalBufferedDurationMs); + Assertions.checkNotNull(playbackStatsTrackers.get(contentSession)) + .onInterruptedByAd(contentEventTime); + } + + @Override + public void onSessionFinished(EventTime eventTime, String session, boolean automaticTransition) { + if (session.equals(activeAdPlayback)) { + activeAdPlayback = null; + } else if (session.equals(activeContentPlayback)) { + activeContentPlayback = null; + } + PlaybackStatsTracker tracker = Assertions.checkNotNull(playbackStatsTrackers.remove(session)); + EventTime startEventTime = Assertions.checkNotNull(sessionStartEventTimes.remove(session)); + if (automaticTransition) { + // Simulate ENDED state to record natural ending of playback. + tracker.onPlayerStateChanged( + eventTime, /* playWhenReady= */ true, Player.STATE_ENDED, /* belongsToPlayback= */ false); + } + tracker.onFinished(eventTime); + PlaybackStats playbackStats = tracker.build(/* isFinal= */ true); + finishedPlaybackStats = PlaybackStats.merge(finishedPlaybackStats, playbackStats); + if (callback != null) { + callback.onPlaybackStatsReady(startEventTime, playbackStats); + } + } + + // AnalyticsListener implementation. + + @Override + public void onPlayerStateChanged( + EventTime eventTime, boolean playWhenReady, @Player.State int playbackState) { + this.playWhenReady = playWhenReady; + this.playbackState = playbackState; + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + boolean belongsToPlayback = sessionManager.belongsToSession(eventTime, session); + playbackStatsTrackers + .get(session) + .onPlayerStateChanged(eventTime, playWhenReady, playbackState, belongsToPlayback); + } + } + + @Override + public void onPlaybackSuppressionReasonChanged( + EventTime eventTime, int playbackSuppressionReason) { + isSuppressed = playbackSuppressionReason != Player.PLAYBACK_SUPPRESSION_REASON_NONE; + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + boolean belongsToPlayback = sessionManager.belongsToSession(eventTime, session); + playbackStatsTrackers + .get(session) + .onIsSuppressedChanged(eventTime, isSuppressed, belongsToPlayback); + } + } + + @Override + public void onTimelineChanged(EventTime eventTime, int reason) { + sessionManager.handleTimelineUpdate(eventTime); + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onPositionDiscontinuity(eventTime); + } + } + } + + @Override + public void onPositionDiscontinuity(EventTime eventTime, int reason) { + sessionManager.handlePositionDiscontinuity(eventTime, reason); + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onPositionDiscontinuity(eventTime); + } + } + } + + @Override + public void onSeekStarted(EventTime eventTime) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onSeekStarted(eventTime); + } + } + } + + @Override + public void onSeekProcessed(EventTime eventTime) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onSeekProcessed(eventTime); + } + } + } + + @Override + public void onPlayerError(EventTime eventTime, ExoPlaybackException error) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onFatalError(eventTime, error); + } + } + } + + @Override + public void onPlaybackParametersChanged( + EventTime eventTime, PlaybackParameters playbackParameters) { + playbackSpeed = playbackParameters.speed; + sessionManager.updateSessions(eventTime); + for (PlaybackStatsTracker tracker : playbackStatsTrackers.values()) { + tracker.onPlaybackSpeedChanged(eventTime, playbackSpeed); + } + } + + @Override + public void onTracksChanged( + EventTime eventTime, TrackGroupArray trackGroups, TrackSelectionArray trackSelections) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onTracksChanged(eventTime, trackSelections); + } + } + } + + @Override + public void onLoadStarted( + EventTime eventTime, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onLoadStarted(eventTime); + } + } + } + + @Override + public void onDownstreamFormatChanged(EventTime eventTime, MediaLoadData mediaLoadData) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onDownstreamFormatChanged(eventTime, mediaLoadData); + } + } + } + + @Override + public void onVideoSizeChanged( + EventTime eventTime, + int width, + int height, + int unappliedRotationDegrees, + float pixelWidthHeightRatio) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onVideoSizeChanged(eventTime, width, height); + } + } + } + + @Override + public void onBandwidthEstimate( + EventTime eventTime, int totalLoadTimeMs, long totalBytesLoaded, long bitrateEstimate) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onBandwidthData(totalLoadTimeMs, totalBytesLoaded); + } + } + } + + @Override + public void onAudioUnderrun( + EventTime eventTime, int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onAudioUnderrun(); + } + } + } + + @Override + public void onDroppedVideoFrames(EventTime eventTime, int droppedFrames, long elapsedMs) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onDroppedVideoFrames(droppedFrames); + } + } + } + + @Override + public void onLoadError( + EventTime eventTime, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData, + IOException error, + boolean wasCanceled) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onNonFatalError(eventTime, error); + } + } + } + + @Override + public void onDrmSessionManagerError(EventTime eventTime, Exception error) { + sessionManager.updateSessions(eventTime); + for (String session : playbackStatsTrackers.keySet()) { + if (sessionManager.belongsToSession(eventTime, session)) { + playbackStatsTrackers.get(session).onNonFatalError(eventTime, error); + } + } + } + + /** Tracker for playback stats of a single playback. */ + private static final class PlaybackStatsTracker { + + // Final stats. + private final boolean keepHistory; + private final long[] playbackStateDurationsMs; + private final List> playbackStateHistory; + private final List mediaTimeHistory; + private final List> videoFormatHistory; + private final List> audioFormatHistory; + private final List> fatalErrorHistory; + private final List> nonFatalErrorHistory; + private final boolean isAd; + + private long firstReportedTimeMs; + private boolean hasBeenReady; + private boolean hasEnded; + private boolean isJoinTimeInvalid; + private int pauseCount; + private int pauseBufferCount; + private int seekCount; + private int rebufferCount; + private long maxRebufferTimeMs; + private int initialVideoFormatHeight; + private long initialVideoFormatBitrate; + private long initialAudioFormatBitrate; + private long videoFormatHeightTimeMs; + private long videoFormatHeightTimeProduct; + private long videoFormatBitrateTimeMs; + private long videoFormatBitrateTimeProduct; + private long audioFormatTimeMs; + private long audioFormatBitrateTimeProduct; + private long bandwidthTimeMs; + private long bandwidthBytes; + private long droppedFrames; + private long audioUnderruns; + private int fatalErrorCount; + private int nonFatalErrorCount; + + // Current player state tracking. + private @PlaybackState int currentPlaybackState; + private long currentPlaybackStateStartTimeMs; + private boolean isSeeking; + private boolean isForeground; + private boolean isInterruptedByAd; + private boolean isFinished; + private boolean playWhenReady; + @Player.State private int playerPlaybackState; + private boolean isSuppressed; + private boolean hasFatalError; + private boolean startedLoading; + private long lastRebufferStartTimeMs; + @Nullable private Format currentVideoFormat; + @Nullable private Format currentAudioFormat; + private long lastVideoFormatStartTimeMs; + private long lastAudioFormatStartTimeMs; + private float currentPlaybackSpeed; + + /** + * Creates a tracker for playback stats. + * + * @param keepHistory Whether to keep a full history of events. + * @param startTime The {@link EventTime} at which the playback stats start. + */ + public PlaybackStatsTracker(boolean keepHistory, EventTime startTime) { + this.keepHistory = keepHistory; + playbackStateDurationsMs = new long[PlaybackStats.PLAYBACK_STATE_COUNT]; + playbackStateHistory = keepHistory ? new ArrayList<>() : Collections.emptyList(); + mediaTimeHistory = keepHistory ? new ArrayList<>() : Collections.emptyList(); + videoFormatHistory = keepHistory ? new ArrayList<>() : Collections.emptyList(); + audioFormatHistory = keepHistory ? new ArrayList<>() : Collections.emptyList(); + fatalErrorHistory = keepHistory ? new ArrayList<>() : Collections.emptyList(); + nonFatalErrorHistory = keepHistory ? new ArrayList<>() : Collections.emptyList(); + currentPlaybackState = PlaybackStats.PLAYBACK_STATE_NOT_STARTED; + currentPlaybackStateStartTimeMs = startTime.realtimeMs; + playerPlaybackState = Player.STATE_IDLE; + firstReportedTimeMs = C.TIME_UNSET; + maxRebufferTimeMs = C.TIME_UNSET; + isAd = startTime.mediaPeriodId != null && startTime.mediaPeriodId.isAd(); + initialAudioFormatBitrate = C.LENGTH_UNSET; + initialVideoFormatBitrate = C.LENGTH_UNSET; + initialVideoFormatHeight = C.LENGTH_UNSET; + currentPlaybackSpeed = 1f; + } + + /** + * Notifies the tracker of a player state change event, including all player state changes while + * the playback is not in the foreground. + * + * @param eventTime The {@link EventTime}. + * @param playWhenReady Whether the playback will proceed when ready. + * @param playbackState The current {@link Player.State}. + * @param belongsToPlayback Whether the {@code eventTime} belongs to the current playback. + */ + public void onPlayerStateChanged( + EventTime eventTime, + boolean playWhenReady, + @Player.State int playbackState, + boolean belongsToPlayback) { + this.playWhenReady = playWhenReady; + playerPlaybackState = playbackState; + if (playbackState != Player.STATE_IDLE) { + hasFatalError = false; + } + if (playbackState == Player.STATE_IDLE || playbackState == Player.STATE_ENDED) { + isInterruptedByAd = false; + } + maybeUpdatePlaybackState(eventTime, belongsToPlayback); + } + + /** + * Notifies the tracker of a change to the playback suppression (e.g. due to audio focus loss), + * including all updates while the playback is not in the foreground. + * + * @param eventTime The {@link EventTime}. + * @param isSuppressed Whether playback is suppressed. + * @param belongsToPlayback Whether the {@code eventTime} belongs to the current playback. + */ + public void onIsSuppressedChanged( + EventTime eventTime, boolean isSuppressed, boolean belongsToPlayback) { + this.isSuppressed = isSuppressed; + maybeUpdatePlaybackState(eventTime, belongsToPlayback); + } + + /** + * Notifies the tracker of a position discontinuity or timeline update for the current playback. + * + * @param eventTime The {@link EventTime}. + */ + public void onPositionDiscontinuity(EventTime eventTime) { + isInterruptedByAd = false; + maybeUpdatePlaybackState(eventTime, /* belongsToPlayback= */ true); + } + + /** + * Notifies the tracker of the start of a seek in the current playback. + * + * @param eventTime The {@link EventTime}. + */ + public void onSeekStarted(EventTime eventTime) { + isSeeking = true; + maybeUpdatePlaybackState(eventTime, /* belongsToPlayback= */ true); + } + + /** + * Notifies the tracker of a seek has been processed in the current playback. + * + * @param eventTime The {@link EventTime}. + */ + public void onSeekProcessed(EventTime eventTime) { + isSeeking = false; + maybeUpdatePlaybackState(eventTime, /* belongsToPlayback= */ true); + } + + /** + * Notifies the tracker of fatal player error in the current playback. + * + * @param eventTime The {@link EventTime}. + */ + public void onFatalError(EventTime eventTime, Exception error) { + fatalErrorCount++; + if (keepHistory) { + fatalErrorHistory.add(Pair.create(eventTime, error)); + } + hasFatalError = true; + isInterruptedByAd = false; + isSeeking = false; + maybeUpdatePlaybackState(eventTime, /* belongsToPlayback= */ true); + } + + /** + * Notifies the tracker that a load for the current playback has started. + * + * @param eventTime The {@link EventTime}. + */ + public void onLoadStarted(EventTime eventTime) { + startedLoading = true; + maybeUpdatePlaybackState(eventTime, /* belongsToPlayback= */ true); + } + + /** + * Notifies the tracker that the current playback became the active foreground playback. + * + * @param eventTime The {@link EventTime}. + */ + public void onForeground(EventTime eventTime) { + isForeground = true; + maybeUpdatePlaybackState(eventTime, /* belongsToPlayback= */ true); + } + + /** + * Notifies the tracker that the current playback has been interrupted for ad playback. + * + * @param eventTime The {@link EventTime}. + */ + public void onInterruptedByAd(EventTime eventTime) { + isInterruptedByAd = true; + isSeeking = false; + maybeUpdatePlaybackState(eventTime, /* belongsToPlayback= */ true); + } + + /** + * Notifies the tracker that the current playback has finished. + * + * @param eventTime The {@link EventTime}. Not guaranteed to belong to the current playback. + */ + public void onFinished(EventTime eventTime) { + isFinished = true; + maybeUpdatePlaybackState(eventTime, /* belongsToPlayback= */ false); + } + + /** + * Notifies the tracker that the track selection for the current playback changed. + * + * @param eventTime The {@link EventTime}. + * @param trackSelections The new {@link TrackSelectionArray}. + */ + public void onTracksChanged(EventTime eventTime, TrackSelectionArray trackSelections) { + boolean videoEnabled = false; + boolean audioEnabled = false; + for (TrackSelection trackSelection : trackSelections.getAll()) { + if (trackSelection != null && trackSelection.length() > 0) { + int trackType = MimeTypes.getTrackType(trackSelection.getFormat(0).sampleMimeType); + if (trackType == C.TRACK_TYPE_VIDEO) { + videoEnabled = true; + } else if (trackType == C.TRACK_TYPE_AUDIO) { + audioEnabled = true; + } + } + } + if (!videoEnabled) { + maybeUpdateVideoFormat(eventTime, /* newFormat= */ null); + } + if (!audioEnabled) { + maybeUpdateAudioFormat(eventTime, /* newFormat= */ null); + } + } + + /** + * Notifies the tracker that a format being read by the renderers for the current playback + * changed. + * + * @param eventTime The {@link EventTime}. + * @param mediaLoadData The {@link MediaLoadData} describing the format change. + */ + public void onDownstreamFormatChanged(EventTime eventTime, MediaLoadData mediaLoadData) { + if (mediaLoadData.trackType == C.TRACK_TYPE_VIDEO + || mediaLoadData.trackType == C.TRACK_TYPE_DEFAULT) { + maybeUpdateVideoFormat(eventTime, mediaLoadData.trackFormat); + } else if (mediaLoadData.trackType == C.TRACK_TYPE_AUDIO) { + maybeUpdateAudioFormat(eventTime, mediaLoadData.trackFormat); + } + } + + /** + * Notifies the tracker that the video size for the current playback changed. + * + * @param eventTime The {@link EventTime}. + * @param width The video width in pixels. + * @param height The video height in pixels. + */ + public void onVideoSizeChanged(EventTime eventTime, int width, int height) { + if (currentVideoFormat != null && currentVideoFormat.height == Format.NO_VALUE) { + Format formatWithHeight = currentVideoFormat.copyWithVideoSize(width, height); + maybeUpdateVideoFormat(eventTime, formatWithHeight); + } + } + + /** + * Notifies the tracker of a playback speed change, including all playback speed changes while + * the playback is not in the foreground. + * + * @param eventTime The {@link EventTime}. + * @param playbackSpeed The new playback speed. + */ + public void onPlaybackSpeedChanged(EventTime eventTime, float playbackSpeed) { + maybeUpdateMediaTimeHistory(eventTime.realtimeMs, eventTime.eventPlaybackPositionMs); + maybeRecordVideoFormatTime(eventTime.realtimeMs); + maybeRecordAudioFormatTime(eventTime.realtimeMs); + currentPlaybackSpeed = playbackSpeed; + } + + /** Notifies the builder of an audio underrun for the current playback. */ + public void onAudioUnderrun() { + audioUnderruns++; + } + + /** + * Notifies the tracker of dropped video frames for the current playback. + * + * @param droppedFrames The number of dropped video frames. + */ + public void onDroppedVideoFrames(int droppedFrames) { + this.droppedFrames += droppedFrames; + } + + /** + * Notifies the tracker of bandwidth measurement data for the current playback. + * + * @param timeMs The time for which bandwidth measurement data is available, in milliseconds. + * @param bytes The bytes transferred during {@code timeMs}. + */ + public void onBandwidthData(long timeMs, long bytes) { + bandwidthTimeMs += timeMs; + bandwidthBytes += bytes; + } + + /** + * Notifies the tracker of a non-fatal error in the current playback. + * + * @param eventTime The {@link EventTime}. + * @param error The error. + */ + public void onNonFatalError(EventTime eventTime, Exception error) { + nonFatalErrorCount++; + if (keepHistory) { + nonFatalErrorHistory.add(Pair.create(eventTime, error)); + } + } + + /** + * Builds the playback stats. + * + * @param isFinal Whether this is the final build and no further events are expected. + */ + public PlaybackStats build(boolean isFinal) { + long[] playbackStateDurationsMs = this.playbackStateDurationsMs; + List mediaTimeHistory = this.mediaTimeHistory; + if (!isFinal) { + long buildTimeMs = SystemClock.elapsedRealtime(); + playbackStateDurationsMs = + Arrays.copyOf(this.playbackStateDurationsMs, PlaybackStats.PLAYBACK_STATE_COUNT); + long lastStateDurationMs = Math.max(0, buildTimeMs - currentPlaybackStateStartTimeMs); + playbackStateDurationsMs[currentPlaybackState] += lastStateDurationMs; + maybeUpdateMaxRebufferTimeMs(buildTimeMs); + maybeRecordVideoFormatTime(buildTimeMs); + maybeRecordAudioFormatTime(buildTimeMs); + mediaTimeHistory = new ArrayList<>(this.mediaTimeHistory); + if (keepHistory && currentPlaybackState == PlaybackStats.PLAYBACK_STATE_PLAYING) { + mediaTimeHistory.add(guessMediaTimeBasedOnElapsedRealtime(buildTimeMs)); + } + } + boolean isJoinTimeInvalid = this.isJoinTimeInvalid || !hasBeenReady; + long validJoinTimeMs = + isJoinTimeInvalid + ? C.TIME_UNSET + : playbackStateDurationsMs[PlaybackStats.PLAYBACK_STATE_JOINING_FOREGROUND]; + boolean hasBackgroundJoin = + playbackStateDurationsMs[PlaybackStats.PLAYBACK_STATE_JOINING_BACKGROUND] > 0; + List> videoHistory = + isFinal ? videoFormatHistory : new ArrayList<>(videoFormatHistory); + List> audioHistory = + isFinal ? audioFormatHistory : new ArrayList<>(audioFormatHistory); + return new PlaybackStats( + /* playbackCount= */ 1, + playbackStateDurationsMs, + isFinal ? playbackStateHistory : new ArrayList<>(playbackStateHistory), + mediaTimeHistory, + firstReportedTimeMs, + /* foregroundPlaybackCount= */ isForeground ? 1 : 0, + /* abandonedBeforeReadyCount= */ hasBeenReady ? 0 : 1, + /* endedCount= */ hasEnded ? 1 : 0, + /* backgroundJoiningCount= */ hasBackgroundJoin ? 1 : 0, + validJoinTimeMs, + /* validJoinTimeCount= */ isJoinTimeInvalid ? 0 : 1, + pauseCount, + pauseBufferCount, + seekCount, + rebufferCount, + maxRebufferTimeMs, + /* adPlaybackCount= */ isAd ? 1 : 0, + videoHistory, + audioHistory, + videoFormatHeightTimeMs, + videoFormatHeightTimeProduct, + videoFormatBitrateTimeMs, + videoFormatBitrateTimeProduct, + audioFormatTimeMs, + audioFormatBitrateTimeProduct, + /* initialVideoFormatHeightCount= */ initialVideoFormatHeight == C.LENGTH_UNSET ? 0 : 1, + /* initialVideoFormatBitrateCount= */ initialVideoFormatBitrate == C.LENGTH_UNSET ? 0 : 1, + initialVideoFormatHeight, + initialVideoFormatBitrate, + /* initialAudioFormatBitrateCount= */ initialAudioFormatBitrate == C.LENGTH_UNSET ? 0 : 1, + initialAudioFormatBitrate, + bandwidthTimeMs, + bandwidthBytes, + droppedFrames, + audioUnderruns, + /* fatalErrorPlaybackCount= */ fatalErrorCount > 0 ? 1 : 0, + fatalErrorCount, + nonFatalErrorCount, + fatalErrorHistory, + nonFatalErrorHistory); + } + + private void maybeUpdatePlaybackState(EventTime eventTime, boolean belongsToPlayback) { + @PlaybackState int newPlaybackState = resolveNewPlaybackState(); + if (newPlaybackState == currentPlaybackState) { + return; + } + Assertions.checkArgument(eventTime.realtimeMs >= currentPlaybackStateStartTimeMs); + + long stateDurationMs = eventTime.realtimeMs - currentPlaybackStateStartTimeMs; + playbackStateDurationsMs[currentPlaybackState] += stateDurationMs; + if (firstReportedTimeMs == C.TIME_UNSET) { + firstReportedTimeMs = eventTime.realtimeMs; + } + isJoinTimeInvalid |= isInvalidJoinTransition(currentPlaybackState, newPlaybackState); + hasBeenReady |= isReadyState(newPlaybackState); + hasEnded |= newPlaybackState == PlaybackStats.PLAYBACK_STATE_ENDED; + if (!isPausedState(currentPlaybackState) && isPausedState(newPlaybackState)) { + pauseCount++; + } + if (newPlaybackState == PlaybackStats.PLAYBACK_STATE_SEEKING) { + seekCount++; + } + if (!isRebufferingState(currentPlaybackState) && isRebufferingState(newPlaybackState)) { + rebufferCount++; + lastRebufferStartTimeMs = eventTime.realtimeMs; + } + if (isRebufferingState(currentPlaybackState) + && currentPlaybackState != PlaybackStats.PLAYBACK_STATE_PAUSED_BUFFERING + && newPlaybackState == PlaybackStats.PLAYBACK_STATE_PAUSED_BUFFERING) { + pauseBufferCount++; + } + + maybeUpdateMediaTimeHistory( + eventTime.realtimeMs, + /* mediaTimeMs= */ belongsToPlayback ? eventTime.eventPlaybackPositionMs : C.TIME_UNSET); + maybeUpdateMaxRebufferTimeMs(eventTime.realtimeMs); + maybeRecordVideoFormatTime(eventTime.realtimeMs); + maybeRecordAudioFormatTime(eventTime.realtimeMs); + + currentPlaybackState = newPlaybackState; + currentPlaybackStateStartTimeMs = eventTime.realtimeMs; + if (keepHistory) { + playbackStateHistory.add(Pair.create(eventTime, currentPlaybackState)); + } + } + + private @PlaybackState int resolveNewPlaybackState() { + if (isFinished) { + // Keep VIDEO_STATE_ENDED if playback naturally ended (or progressed to next item). + return currentPlaybackState == PlaybackStats.PLAYBACK_STATE_ENDED + ? PlaybackStats.PLAYBACK_STATE_ENDED + : PlaybackStats.PLAYBACK_STATE_ABANDONED; + } else if (isSeeking) { + // Seeking takes precedence over errors such that we report a seek while in error state. + return PlaybackStats.PLAYBACK_STATE_SEEKING; + } else if (hasFatalError) { + return PlaybackStats.PLAYBACK_STATE_FAILED; + } else if (!isForeground) { + // Before the playback becomes foreground, only report background joining and not started. + return startedLoading + ? PlaybackStats.PLAYBACK_STATE_JOINING_BACKGROUND + : PlaybackStats.PLAYBACK_STATE_NOT_STARTED; + } else if (isInterruptedByAd) { + return PlaybackStats.PLAYBACK_STATE_INTERRUPTED_BY_AD; + } else if (playerPlaybackState == Player.STATE_ENDED) { + return PlaybackStats.PLAYBACK_STATE_ENDED; + } else if (playerPlaybackState == Player.STATE_BUFFERING) { + if (currentPlaybackState == PlaybackStats.PLAYBACK_STATE_NOT_STARTED + || currentPlaybackState == PlaybackStats.PLAYBACK_STATE_JOINING_BACKGROUND + || currentPlaybackState == PlaybackStats.PLAYBACK_STATE_JOINING_FOREGROUND + || currentPlaybackState == PlaybackStats.PLAYBACK_STATE_INTERRUPTED_BY_AD) { + return PlaybackStats.PLAYBACK_STATE_JOINING_FOREGROUND; + } + if (currentPlaybackState == PlaybackStats.PLAYBACK_STATE_SEEKING + || currentPlaybackState == PlaybackStats.PLAYBACK_STATE_SEEK_BUFFERING) { + return PlaybackStats.PLAYBACK_STATE_SEEK_BUFFERING; + } + if (!playWhenReady) { + return PlaybackStats.PLAYBACK_STATE_PAUSED_BUFFERING; + } + return isSuppressed + ? PlaybackStats.PLAYBACK_STATE_SUPPRESSED_BUFFERING + : PlaybackStats.PLAYBACK_STATE_BUFFERING; + } else if (playerPlaybackState == Player.STATE_READY) { + if (!playWhenReady) { + return PlaybackStats.PLAYBACK_STATE_PAUSED; + } + return isSuppressed + ? PlaybackStats.PLAYBACK_STATE_SUPPRESSED + : PlaybackStats.PLAYBACK_STATE_PLAYING; + } else if (playerPlaybackState == Player.STATE_IDLE + && currentPlaybackState != PlaybackStats.PLAYBACK_STATE_NOT_STARTED) { + // This case only applies for calls to player.stop(). All other IDLE cases are handled by + // !isForeground, hasFatalError or isSuspended. NOT_STARTED is deliberately ignored. + return PlaybackStats.PLAYBACK_STATE_STOPPED; + } + return currentPlaybackState; + } + + private void maybeUpdateMaxRebufferTimeMs(long nowMs) { + if (isRebufferingState(currentPlaybackState)) { + long rebufferDurationMs = nowMs - lastRebufferStartTimeMs; + if (maxRebufferTimeMs == C.TIME_UNSET || rebufferDurationMs > maxRebufferTimeMs) { + maxRebufferTimeMs = rebufferDurationMs; + } + } + } + + private void maybeUpdateMediaTimeHistory(long realtimeMs, long mediaTimeMs) { + if (!keepHistory) { + return; + } + if (currentPlaybackState != PlaybackStats.PLAYBACK_STATE_PLAYING) { + if (mediaTimeMs == C.TIME_UNSET) { + return; + } + if (!mediaTimeHistory.isEmpty()) { + long previousMediaTimeMs = mediaTimeHistory.get(mediaTimeHistory.size() - 1)[1]; + if (previousMediaTimeMs != mediaTimeMs) { + mediaTimeHistory.add(new long[] {realtimeMs, previousMediaTimeMs}); + } + } + } + mediaTimeHistory.add( + mediaTimeMs == C.TIME_UNSET + ? guessMediaTimeBasedOnElapsedRealtime(realtimeMs) + : new long[] {realtimeMs, mediaTimeMs}); + } + + private long[] guessMediaTimeBasedOnElapsedRealtime(long realtimeMs) { + long[] previousKnownMediaTimeHistory = mediaTimeHistory.get(mediaTimeHistory.size() - 1); + long previousRealtimeMs = previousKnownMediaTimeHistory[0]; + long previousMediaTimeMs = previousKnownMediaTimeHistory[1]; + long elapsedMediaTimeEstimateMs = + (long) ((realtimeMs - previousRealtimeMs) * currentPlaybackSpeed); + long mediaTimeEstimateMs = previousMediaTimeMs + elapsedMediaTimeEstimateMs; + return new long[] {realtimeMs, mediaTimeEstimateMs}; + } + + private void maybeUpdateVideoFormat(EventTime eventTime, @Nullable Format newFormat) { + if (Util.areEqual(currentVideoFormat, newFormat)) { + return; + } + maybeRecordVideoFormatTime(eventTime.realtimeMs); + if (newFormat != null) { + if (initialVideoFormatHeight == C.LENGTH_UNSET && newFormat.height != Format.NO_VALUE) { + initialVideoFormatHeight = newFormat.height; + } + if (initialVideoFormatBitrate == C.LENGTH_UNSET && newFormat.bitrate != Format.NO_VALUE) { + initialVideoFormatBitrate = newFormat.bitrate; + } + } + currentVideoFormat = newFormat; + if (keepHistory) { + videoFormatHistory.add(Pair.create(eventTime, currentVideoFormat)); + } + } + + private void maybeUpdateAudioFormat(EventTime eventTime, @Nullable Format newFormat) { + if (Util.areEqual(currentAudioFormat, newFormat)) { + return; + } + maybeRecordAudioFormatTime(eventTime.realtimeMs); + if (newFormat != null + && initialAudioFormatBitrate == C.LENGTH_UNSET + && newFormat.bitrate != Format.NO_VALUE) { + initialAudioFormatBitrate = newFormat.bitrate; + } + currentAudioFormat = newFormat; + if (keepHistory) { + audioFormatHistory.add(Pair.create(eventTime, currentAudioFormat)); + } + } + + private void maybeRecordVideoFormatTime(long nowMs) { + if (currentPlaybackState == PlaybackStats.PLAYBACK_STATE_PLAYING + && currentVideoFormat != null) { + long mediaDurationMs = (long) ((nowMs - lastVideoFormatStartTimeMs) * currentPlaybackSpeed); + if (currentVideoFormat.height != Format.NO_VALUE) { + videoFormatHeightTimeMs += mediaDurationMs; + videoFormatHeightTimeProduct += mediaDurationMs * currentVideoFormat.height; + } + if (currentVideoFormat.bitrate != Format.NO_VALUE) { + videoFormatBitrateTimeMs += mediaDurationMs; + videoFormatBitrateTimeProduct += mediaDurationMs * currentVideoFormat.bitrate; + } + } + lastVideoFormatStartTimeMs = nowMs; + } + + private void maybeRecordAudioFormatTime(long nowMs) { + if (currentPlaybackState == PlaybackStats.PLAYBACK_STATE_PLAYING + && currentAudioFormat != null + && currentAudioFormat.bitrate != Format.NO_VALUE) { + long mediaDurationMs = (long) ((nowMs - lastAudioFormatStartTimeMs) * currentPlaybackSpeed); + audioFormatTimeMs += mediaDurationMs; + audioFormatBitrateTimeProduct += mediaDurationMs * currentAudioFormat.bitrate; + } + lastAudioFormatStartTimeMs = nowMs; + } + + private static boolean isReadyState(@PlaybackState int state) { + return state == PlaybackStats.PLAYBACK_STATE_PLAYING + || state == PlaybackStats.PLAYBACK_STATE_PAUSED + || state == PlaybackStats.PLAYBACK_STATE_SUPPRESSED; + } + + private static boolean isPausedState(@PlaybackState int state) { + return state == PlaybackStats.PLAYBACK_STATE_PAUSED + || state == PlaybackStats.PLAYBACK_STATE_PAUSED_BUFFERING; + } + + private static boolean isRebufferingState(@PlaybackState int state) { + return state == PlaybackStats.PLAYBACK_STATE_BUFFERING + || state == PlaybackStats.PLAYBACK_STATE_PAUSED_BUFFERING + || state == PlaybackStats.PLAYBACK_STATE_SUPPRESSED_BUFFERING; + } + + private static boolean isInvalidJoinTransition( + @PlaybackState int oldState, @PlaybackState int newState) { + if (oldState != PlaybackStats.PLAYBACK_STATE_JOINING_BACKGROUND + && oldState != PlaybackStats.PLAYBACK_STATE_JOINING_FOREGROUND + && oldState != PlaybackStats.PLAYBACK_STATE_INTERRUPTED_BY_AD) { + return false; + } + return newState != PlaybackStats.PLAYBACK_STATE_JOINING_BACKGROUND + && newState != PlaybackStats.PLAYBACK_STATE_JOINING_FOREGROUND + && newState != PlaybackStats.PLAYBACK_STATE_INTERRUPTED_BY_AD + && newState != PlaybackStats.PLAYBACK_STATE_PLAYING + && newState != PlaybackStats.PLAYBACK_STATE_PAUSED + && newState != PlaybackStats.PLAYBACK_STATE_SUPPRESSED + && newState != PlaybackStats.PLAYBACK_STATE_ENDED; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/package-info.java new file mode 100644 index 0000000000..08556b00b0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/analytics/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.analytics; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Ac3Util.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Ac3Util.java new file mode 100644 index 0000000000..c68e49dea1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Ac3Util.java @@ -0,0 +1,584 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac3Util.SyncFrameInfo.StreamType; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.nio.ByteBuffer; + +/** + * Utility methods for parsing Dolby TrueHD and (E-)AC-3 syncframes. (E-)AC-3 parsing follows the + * definition in ETSI TS 102 366 V1.4.1. + */ +public final class Ac3Util { + + /** Holds sample format information as presented by a syncframe header. */ + public static final class SyncFrameInfo { + + /** + * AC3 stream types. See also E.1.3.1.1. One of {@link #STREAM_TYPE_UNDEFINED}, {@link + * #STREAM_TYPE_TYPE0}, {@link #STREAM_TYPE_TYPE1} or {@link #STREAM_TYPE_TYPE2}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({STREAM_TYPE_UNDEFINED, STREAM_TYPE_TYPE0, STREAM_TYPE_TYPE1, STREAM_TYPE_TYPE2}) + public @interface StreamType {} + /** Undefined AC3 stream type. */ + public static final int STREAM_TYPE_UNDEFINED = -1; + /** Type 0 AC3 stream type. */ + public static final int STREAM_TYPE_TYPE0 = 0; + /** Type 1 AC3 stream type. */ + public static final int STREAM_TYPE_TYPE1 = 1; + /** Type 2 AC3 stream type. */ + public static final int STREAM_TYPE_TYPE2 = 2; + + /** + * The sample mime type of the bitstream. One of {@link MimeTypes#AUDIO_AC3} and {@link + * MimeTypes#AUDIO_E_AC3}. + */ + @Nullable public final String mimeType; + /** + * The type of the stream if {@link #mimeType} is {@link MimeTypes#AUDIO_E_AC3}, or {@link + * #STREAM_TYPE_UNDEFINED} otherwise. + */ + public final @StreamType int streamType; + /** + * The audio sampling rate in Hz. + */ + public final int sampleRate; + /** + * The number of audio channels + */ + public final int channelCount; + /** + * The size of the frame. + */ + public final int frameSize; + /** + * Number of audio samples in the frame. + */ + public final int sampleCount; + + private SyncFrameInfo( + @Nullable String mimeType, + @StreamType int streamType, + int channelCount, + int sampleRate, + int frameSize, + int sampleCount) { + this.mimeType = mimeType; + this.streamType = streamType; + this.channelCount = channelCount; + this.sampleRate = sampleRate; + this.frameSize = frameSize; + this.sampleCount = sampleCount; + } + + } + + /** + * The number of samples to store in each output chunk when rechunking TrueHD streams. The number + * of samples extracted from the container corresponding to one syncframe must be an integer + * multiple of this value. + */ + public static final int TRUEHD_RECHUNK_SAMPLE_COUNT = 16; + /** + * The number of bytes that must be parsed from a TrueHD syncframe to calculate the sample count. + */ + public static final int TRUEHD_SYNCFRAME_PREFIX_LENGTH = 10; + + /** + * The number of new samples per (E-)AC-3 audio block. + */ + private static final int AUDIO_SAMPLES_PER_AUDIO_BLOCK = 256; + /** Each syncframe has 6 blocks that provide 256 new audio samples. See subsection 4.1. */ + private static final int AC3_SYNCFRAME_AUDIO_SAMPLE_COUNT = 6 * AUDIO_SAMPLES_PER_AUDIO_BLOCK; + /** + * Number of audio blocks per E-AC-3 syncframe, indexed by numblkscod. + */ + private static final int[] BLOCKS_PER_SYNCFRAME_BY_NUMBLKSCOD = new int[] {1, 2, 3, 6}; + /** + * Sample rates, indexed by fscod. + */ + private static final int[] SAMPLE_RATE_BY_FSCOD = new int[] {48000, 44100, 32000}; + /** + * Sample rates, indexed by fscod2 (E-AC-3). + */ + private static final int[] SAMPLE_RATE_BY_FSCOD2 = new int[] {24000, 22050, 16000}; + /** + * Channel counts, indexed by acmod. + */ + private static final int[] CHANNEL_COUNT_BY_ACMOD = new int[] {2, 1, 2, 3, 3, 4, 4, 5}; + /** Nominal bitrates in kbps, indexed by frmsizecod / 2. (See table 4.13.) */ + private static final int[] BITRATE_BY_HALF_FRMSIZECOD = + new int[] { + 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 448, 512, 576, 640 + }; + /** 16-bit words per syncframe, indexed by frmsizecod / 2. (See table 4.13.) */ + private static final int[] SYNCFRAME_SIZE_WORDS_BY_HALF_FRMSIZECOD_44_1 = + new int[] { + 69, 87, 104, 121, 139, 174, 208, 243, 278, 348, 417, 487, 557, 696, 835, 975, 1114, 1253, + 1393 + }; + + /** + * Returns the AC-3 format given {@code data} containing the AC3SpecificBox according to Annex F. + * The reading position of {@code data} will be modified. + * + * @param data The AC3SpecificBox to parse. + * @param trackId The track identifier to set on the format. + * @param language The language to set on the format. + * @param drmInitData {@link DrmInitData} to be included in the format. + * @return The AC-3 format parsed from data in the header. + */ + public static Format parseAc3AnnexFFormat( + ParsableByteArray data, String trackId, String language, @Nullable DrmInitData drmInitData) { + int fscod = (data.readUnsignedByte() & 0xC0) >> 6; + int sampleRate = SAMPLE_RATE_BY_FSCOD[fscod]; + int nextByte = data.readUnsignedByte(); + int channelCount = CHANNEL_COUNT_BY_ACMOD[(nextByte & 0x38) >> 3]; + if ((nextByte & 0x04) != 0) { // lfeon + channelCount++; + } + return Format.createAudioSampleFormat( + trackId, + MimeTypes.AUDIO_AC3, + /* codecs= */ null, + Format.NO_VALUE, + Format.NO_VALUE, + channelCount, + sampleRate, + /* initializationData= */ null, + drmInitData, + /* selectionFlags= */ 0, + language); + } + + /** + * Returns the E-AC-3 format given {@code data} containing the EC3SpecificBox according to Annex + * F. The reading position of {@code data} will be modified. + * + * @param data The EC3SpecificBox to parse. + * @param trackId The track identifier to set on the format. + * @param language The language to set on the format. + * @param drmInitData {@link DrmInitData} to be included in the format. + * @return The E-AC-3 format parsed from data in the header. + */ + public static Format parseEAc3AnnexFFormat( + ParsableByteArray data, String trackId, String language, @Nullable DrmInitData drmInitData) { + data.skipBytes(2); // data_rate, num_ind_sub + + // Read the first independent substream. + int fscod = (data.readUnsignedByte() & 0xC0) >> 6; + int sampleRate = SAMPLE_RATE_BY_FSCOD[fscod]; + int nextByte = data.readUnsignedByte(); + int channelCount = CHANNEL_COUNT_BY_ACMOD[(nextByte & 0x0E) >> 1]; + if ((nextByte & 0x01) != 0) { // lfeon + channelCount++; + } + + // Read the first dependent substream. + nextByte = data.readUnsignedByte(); + int numDepSub = ((nextByte & 0x1E) >> 1); + if (numDepSub > 0) { + int lowByteChanLoc = data.readUnsignedByte(); + // Read Lrs/Rrs pair + // TODO: Read other channel configuration + if ((lowByteChanLoc & 0x02) != 0) { + channelCount += 2; + } + } + String mimeType = MimeTypes.AUDIO_E_AC3; + if (data.bytesLeft() > 0) { + nextByte = data.readUnsignedByte(); + if ((nextByte & 0x01) != 0) { // flag_ec3_extension_type_a + mimeType = MimeTypes.AUDIO_E_AC3_JOC; + } + } + return Format.createAudioSampleFormat( + trackId, + mimeType, + /* codecs= */ null, + Format.NO_VALUE, + Format.NO_VALUE, + channelCount, + sampleRate, + /* initializationData= */ null, + drmInitData, + /* selectionFlags= */ 0, + language); + } + + /** + * Returns (E-)AC-3 format information given {@code data} containing a syncframe. The reading + * position of {@code data} will be modified. + * + * @param data The data to parse, positioned at the start of the syncframe. + * @return The (E-)AC-3 format data parsed from the header. + */ + public static SyncFrameInfo parseAc3SyncframeInfo(ParsableBitArray data) { + int initialPosition = data.getPosition(); + data.skipBits(40); + // Parse the bitstream ID for AC-3 and E-AC-3 (see subsections 4.3, E.1.2 and E.1.3.1.6). + boolean isEac3 = data.readBits(5) > 10; + data.setPosition(initialPosition); + @Nullable String mimeType; + @StreamType int streamType = SyncFrameInfo.STREAM_TYPE_UNDEFINED; + int sampleRate; + int acmod; + int frameSize; + int sampleCount; + boolean lfeon; + int channelCount; + if (isEac3) { + // Subsection E.1.2. + data.skipBits(16); // syncword + switch (data.readBits(2)) { // strmtyp + case 0: + streamType = SyncFrameInfo.STREAM_TYPE_TYPE0; + break; + case 1: + streamType = SyncFrameInfo.STREAM_TYPE_TYPE1; + break; + case 2: + streamType = SyncFrameInfo.STREAM_TYPE_TYPE2; + break; + default: + streamType = SyncFrameInfo.STREAM_TYPE_UNDEFINED; + break; + } + data.skipBits(3); // substreamid + frameSize = (data.readBits(11) + 1) * 2; // See frmsiz in subsection E.1.3.1.3. + int fscod = data.readBits(2); + int audioBlocks; + int numblkscod; + if (fscod == 3) { + numblkscod = 3; + sampleRate = SAMPLE_RATE_BY_FSCOD2[data.readBits(2)]; + audioBlocks = 6; + } else { + numblkscod = data.readBits(2); + audioBlocks = BLOCKS_PER_SYNCFRAME_BY_NUMBLKSCOD[numblkscod]; + sampleRate = SAMPLE_RATE_BY_FSCOD[fscod]; + } + sampleCount = AUDIO_SAMPLES_PER_AUDIO_BLOCK * audioBlocks; + acmod = data.readBits(3); + lfeon = data.readBit(); + channelCount = CHANNEL_COUNT_BY_ACMOD[acmod] + (lfeon ? 1 : 0); + data.skipBits(5 + 5); // bsid, dialnorm + if (data.readBit()) { // compre + data.skipBits(8); // compr + } + if (acmod == 0) { + data.skipBits(5); // dialnorm2 + if (data.readBit()) { // compr2e + data.skipBits(8); // compr2 + } + } + if (streamType == SyncFrameInfo.STREAM_TYPE_TYPE1 && data.readBit()) { // chanmape + data.skipBits(16); // chanmap + } + if (data.readBit()) { // mixmdate + if (acmod > 2) { + data.skipBits(2); // dmixmod + } + if ((acmod & 0x01) != 0 && acmod > 2) { + data.skipBits(3 + 3); // ltrtcmixlev, lorocmixlev + } + if ((acmod & 0x04) != 0) { + data.skipBits(6); // ltrtsurmixlev, lorosurmixlev + } + if (lfeon && data.readBit()) { // lfemixlevcode + data.skipBits(5); // lfemixlevcod + } + if (streamType == SyncFrameInfo.STREAM_TYPE_TYPE0) { + if (data.readBit()) { // pgmscle + data.skipBits(6); //pgmscl + } + if (acmod == 0 && data.readBit()) { // pgmscl2e + data.skipBits(6); // pgmscl2 + } + if (data.readBit()) { // extpgmscle + data.skipBits(6); // extpgmscl + } + int mixdef = data.readBits(2); + if (mixdef == 1) { + data.skipBits(1 + 1 + 3); // premixcmpsel, drcsrc, premixcmpscl + } else if (mixdef == 2) { + data.skipBits(12); // mixdata + } else if (mixdef == 3) { + int mixdeflen = data.readBits(5); + if (data.readBit()) { // mixdata2e + data.skipBits(1 + 1 + 3); // premixcmpsel, drcsrc, premixcmpscl + if (data.readBit()) { // extpgmlscle + data.skipBits(4); // extpgmlscl + } + if (data.readBit()) { // extpgmcscle + data.skipBits(4); // extpgmcscl + } + if (data.readBit()) { // extpgmrscle + data.skipBits(4); // extpgmrscl + } + if (data.readBit()) { // extpgmlsscle + data.skipBits(4); // extpgmlsscl + } + if (data.readBit()) { // extpgmrsscle + data.skipBits(4); // extpgmrsscl + } + if (data.readBit()) { // extpgmlfescle + data.skipBits(4); // extpgmlfescl + } + if (data.readBit()) { // dmixscle + data.skipBits(4); // dmixscl + } + if (data.readBit()) { // addche + if (data.readBit()) { // extpgmaux1scle + data.skipBits(4); // extpgmaux1scl + } + if (data.readBit()) { // extpgmaux2scle + data.skipBits(4); // extpgmaux2scl + } + } + } + if (data.readBit()) { // mixdata3e + data.skipBits(5); // spchdat + if (data.readBit()) { // addspchdate + data.skipBits(5 + 2); // spchdat1, spchan1att + if (data.readBit()) { // addspdat1e + data.skipBits(5 + 3); // spchdat2, spchan2att + } + } + } + data.skipBits(8 * (mixdeflen + 2)); // mixdata + data.byteAlign(); // mixdatafill + } + if (acmod < 2) { + if (data.readBit()) { // paninfoe + data.skipBits(8 + 6); // panmean, paninfo + } + if (acmod == 0) { + if (data.readBit()) { // paninfo2e + data.skipBits(8 + 6); // panmean2, paninfo2 + } + } + } + if (data.readBit()) { // frmmixcfginfoe + if (numblkscod == 0) { + data.skipBits(5); // blkmixcfginfo[0] + } else { + for (int blk = 0; blk < audioBlocks; blk++) { + if (data.readBit()) { // blkmixcfginfoe + data.skipBits(5); // blkmixcfginfo[blk] + } + } + } + } + } + } + if (data.readBit()) { // infomdate + data.skipBits(3 + 1 + 1); // bsmod, copyrightb, origbs + if (acmod == 2) { + data.skipBits(2 + 2); // dsurmod, dheadphonmod + } + if (acmod >= 6) { + data.skipBits(2); // dsurexmod + } + if (data.readBit()) { // audioprodie + data.skipBits(5 + 2 + 1); // mixlevel, roomtyp, adconvtyp + } + if (acmod == 0 && data.readBit()) { // audioprodi2e + data.skipBits(5 + 2 + 1); // mixlevel2, roomtyp2, adconvtyp2 + } + if (fscod < 3) { + data.skipBit(); // sourcefscod + } + } + if (streamType == SyncFrameInfo.STREAM_TYPE_TYPE0 && numblkscod != 3) { + data.skipBit(); // convsync + } + if (streamType == SyncFrameInfo.STREAM_TYPE_TYPE2 + && (numblkscod == 3 || data.readBit())) { // blkid + data.skipBits(6); // frmsizecod + } + mimeType = MimeTypes.AUDIO_E_AC3; + if (data.readBit()) { // addbsie + int addbsil = data.readBits(6); + if (addbsil == 1 && data.readBits(8) == 1) { // addbsi + mimeType = MimeTypes.AUDIO_E_AC3_JOC; + } + } + } else /* is AC-3 */ { + mimeType = MimeTypes.AUDIO_AC3; + data.skipBits(16 + 16); // syncword, crc1 + int fscod = data.readBits(2); + if (fscod == 3) { + // fscod '11' indicates that the decoder should not attempt to decode audio. We invalidate + // the mime type to prevent association with a renderer. + mimeType = null; + } + int frmsizecod = data.readBits(6); + frameSize = getAc3SyncframeSize(fscod, frmsizecod); + data.skipBits(5 + 3); // bsid, bsmod + acmod = data.readBits(3); + if ((acmod & 0x01) != 0 && acmod != 1) { + data.skipBits(2); // cmixlev + } + if ((acmod & 0x04) != 0) { + data.skipBits(2); // surmixlev + } + if (acmod == 2) { + data.skipBits(2); // dsurmod + } + sampleRate = + fscod < SAMPLE_RATE_BY_FSCOD.length ? SAMPLE_RATE_BY_FSCOD[fscod] : Format.NO_VALUE; + sampleCount = AC3_SYNCFRAME_AUDIO_SAMPLE_COUNT; + lfeon = data.readBit(); + channelCount = CHANNEL_COUNT_BY_ACMOD[acmod] + (lfeon ? 1 : 0); + } + return new SyncFrameInfo( + mimeType, streamType, channelCount, sampleRate, frameSize, sampleCount); + } + + /** + * Returns the size in bytes of the given (E-)AC-3 syncframe. + * + * @param data The syncframe to parse. + * @return The syncframe size in bytes. {@link C#LENGTH_UNSET} if the input is invalid. + */ + public static int parseAc3SyncframeSize(byte[] data) { + if (data.length < 6) { + return C.LENGTH_UNSET; + } + // Parse the bitstream ID for AC-3 and E-AC-3 (see subsections 4.3, E.1.2 and E.1.3.1.6). + boolean isEac3 = ((data[5] & 0xF8) >> 3) > 10; + if (isEac3) { + int frmsiz = (data[2] & 0x07) << 8; // Most significant 3 bits. + frmsiz |= data[3] & 0xFF; // Least significant 8 bits. + return (frmsiz + 1) * 2; // See frmsiz in subsection E.1.3.1.3. + } else { + int fscod = (data[4] & 0xC0) >> 6; + int frmsizecod = data[4] & 0x3F; + return getAc3SyncframeSize(fscod, frmsizecod); + } + } + + /** + * Reads the number of audio samples represented by the given (E-)AC-3 syncframe. The buffer's + * position is not modified. + * + * @param buffer The {@link ByteBuffer} from which to read the syncframe. + * @return The number of audio samples represented by the syncframe. + */ + public static int parseAc3SyncframeAudioSampleCount(ByteBuffer buffer) { + // Parse the bitstream ID for AC-3 and E-AC-3 (see subsections 4.3, E.1.2 and E.1.3.1.6). + boolean isEac3 = ((buffer.get(buffer.position() + 5) & 0xF8) >> 3) > 10; + if (isEac3) { + int fscod = (buffer.get(buffer.position() + 4) & 0xC0) >> 6; + int numblkscod = fscod == 0x03 ? 3 : (buffer.get(buffer.position() + 4) & 0x30) >> 4; + return BLOCKS_PER_SYNCFRAME_BY_NUMBLKSCOD[numblkscod] * AUDIO_SAMPLES_PER_AUDIO_BLOCK; + } else { + return AC3_SYNCFRAME_AUDIO_SAMPLE_COUNT; + } + } + + /** + * Returns the offset relative to the buffer's position of the start of a TrueHD syncframe, or + * {@link C#INDEX_UNSET} if no syncframe was found. The buffer's position is not modified. + * + * @param buffer The {@link ByteBuffer} within which to find a syncframe. + * @return The offset relative to the buffer's position of the start of a TrueHD syncframe, or + * {@link C#INDEX_UNSET} if no syncframe was found. + */ + public static int findTrueHdSyncframeOffset(ByteBuffer buffer) { + int startIndex = buffer.position(); + int endIndex = buffer.limit() - TRUEHD_SYNCFRAME_PREFIX_LENGTH; + for (int i = startIndex; i <= endIndex; i++) { + // The syncword ends 0xBA for TrueHD or 0xBB for MLP. + if ((buffer.getInt(i + 4) & 0xFEFFFFFF) == 0xBA6F72F8) { + return i - startIndex; + } + } + return C.INDEX_UNSET; + } + + /** + * Returns the number of audio samples represented by the given TrueHD syncframe, or 0 if the + * buffer is not the start of a syncframe. + * + * @param syncframe The bytes from which to read the syncframe. Must be at least {@link + * #TRUEHD_SYNCFRAME_PREFIX_LENGTH} bytes long. + * @return The number of audio samples represented by the syncframe, or 0 if the buffer doesn't + * contain the start of a syncframe. + */ + public static int parseTrueHdSyncframeAudioSampleCount(byte[] syncframe) { + // See "Dolby TrueHD (MLP) high-level bitstream description" on the Dolby developer site, + // subsections 2.2 and 4.2.1. The syncword ends 0xBA for TrueHD or 0xBB for MLP. + if (syncframe[4] != (byte) 0xF8 + || syncframe[5] != (byte) 0x72 + || syncframe[6] != (byte) 0x6F + || (syncframe[7] & 0xFE) != 0xBA) { + return 0; + } + boolean isMlp = (syncframe[7] & 0xFF) == 0xBB; + return 40 << ((syncframe[isMlp ? 9 : 8] >> 4) & 0x07); + } + + /** + * Reads the number of audio samples represented by a TrueHD syncframe. The buffer's position is + * not modified. + * + * @param buffer The {@link ByteBuffer} from which to read the syncframe. + * @param offset The offset of the start of the syncframe relative to the buffer's position. + * @return The number of audio samples represented by the syncframe. + */ + public static int parseTrueHdSyncframeAudioSampleCount(ByteBuffer buffer, int offset) { + // TODO: Link to specification if available. + boolean isMlp = (buffer.get(buffer.position() + offset + 7) & 0xFF) == 0xBB; + return 40 << ((buffer.get(buffer.position() + offset + (isMlp ? 9 : 8)) >> 4) & 0x07); + } + + private static int getAc3SyncframeSize(int fscod, int frmsizecod) { + int halfFrmsizecod = frmsizecod / 2; + if (fscod < 0 || fscod >= SAMPLE_RATE_BY_FSCOD.length || frmsizecod < 0 + || halfFrmsizecod >= SYNCFRAME_SIZE_WORDS_BY_HALF_FRMSIZECOD_44_1.length) { + // Invalid values provided. + return C.LENGTH_UNSET; + } + int sampleRate = SAMPLE_RATE_BY_FSCOD[fscod]; + if (sampleRate == 44100) { + return 2 * (SYNCFRAME_SIZE_WORDS_BY_HALF_FRMSIZECOD_44_1[halfFrmsizecod] + (frmsizecod % 2)); + } + int bitrate = BITRATE_BY_HALF_FRMSIZECOD[halfFrmsizecod]; + if (sampleRate == 32000) { + return 6 * bitrate; + } else { // sampleRate == 48000 + return 4 * bitrate; + } + } + + private Ac3Util() {} + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Ac4Util.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Ac4Util.java new file mode 100644 index 0000000000..a921346e90 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Ac4Util.java @@ -0,0 +1,250 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.nio.ByteBuffer; + +/** Utility methods for parsing AC-4 frames, which are access units in AC-4 bitstreams. */ +public final class Ac4Util { + + /** Holds sample format information as presented by a syncframe header. */ + public static final class SyncFrameInfo { + + /** The bitstream version. */ + public final int bitstreamVersion; + /** The audio sampling rate in Hz. */ + public final int sampleRate; + /** The number of audio channels */ + public final int channelCount; + /** The size of the frame. */ + public final int frameSize; + /** Number of audio samples in the frame. */ + public final int sampleCount; + + private SyncFrameInfo( + int bitstreamVersion, int channelCount, int sampleRate, int frameSize, int sampleCount) { + this.bitstreamVersion = bitstreamVersion; + this.channelCount = channelCount; + this.sampleRate = sampleRate; + this.frameSize = frameSize; + this.sampleCount = sampleCount; + } + } + + public static final int AC40_SYNCWORD = 0xAC40; + public static final int AC41_SYNCWORD = 0xAC41; + + /** The channel count of AC-4 stream. */ + // TODO: Parse AC-4 stream channel count. + private static final int CHANNEL_COUNT_2 = 2; + /** + * The AC-4 sync frame header size for extractor. The seven bytes are 0xAC, 0x40, 0xFF, 0xFF, + * sizeByte1, sizeByte2, sizeByte3. See ETSI TS 103 190-1 V1.3.1, Annex G + */ + public static final int SAMPLE_HEADER_SIZE = 7; + /** + * The header size for AC-4 parser. Only needs to be as big as we need to read, not the full + * header size. + */ + public static final int HEADER_SIZE_FOR_PARSER = 16; + /** + * Number of audio samples in the frame. Defined in IEC61937-14:2017 table 5 and 6. This table + * provides the number of samples per frame at the playback sampling frequency of 48 kHz. For 44.1 + * kHz, only frame_rate_index(13) is valid and corresponding sample count is 2048. + */ + private static final int[] SAMPLE_COUNT = + new int[] { + /* [ 0] 23.976 fps */ 2002, + /* [ 1] 24 fps */ 2000, + /* [ 2] 25 fps */ 1920, + /* [ 3] 29.97 fps */ 1601, // 1601 | 1602 | 1601 | 1602 | 1602 + /* [ 4] 30 fps */ 1600, + /* [ 5] 47.95 fps */ 1001, + /* [ 6] 48 fps */ 1000, + /* [ 7] 50 fps */ 960, + /* [ 8] 59.94 fps */ 800, // 800 | 801 | 801 | 801 | 801 + /* [ 9] 60 fps */ 800, + /* [10] 100 fps */ 480, + /* [11] 119.88 fps */ 400, // 400 | 400 | 401 | 400 | 401 + /* [12] 120 fps */ 400, + /* [13] 23.438 fps */ 2048 + }; + + /** + * Returns the AC-4 format given {@code data} containing the AC4SpecificBox according to ETSI TS + * 103 190-1 Annex E. The reading position of {@code data} will be modified. + * + * @param data The AC4SpecificBox to parse. + * @param trackId The track identifier to set on the format. + * @param language The language to set on the format. + * @param drmInitData {@link DrmInitData} to be included in the format. + * @return The AC-4 format parsed from data in the header. + */ + public static Format parseAc4AnnexEFormat( + ParsableByteArray data, String trackId, String language, @Nullable DrmInitData drmInitData) { + data.skipBytes(1); // ac4_dsi_version, bitstream_version[0:5] + int sampleRate = ((data.readUnsignedByte() & 0x20) >> 5 == 1) ? 48000 : 44100; + return Format.createAudioSampleFormat( + trackId, + MimeTypes.AUDIO_AC4, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + /* maxInputSize= */ Format.NO_VALUE, + CHANNEL_COUNT_2, + sampleRate, + /* initializationData= */ null, + drmInitData, + /* selectionFlags= */ 0, + language); + } + + /** + * Returns AC-4 format information given {@code data} containing a syncframe. The reading position + * of {@code data} will be modified. + * + * @param data The data to parse, positioned at the start of the syncframe. + * @return The AC-4 format data parsed from the header. + */ + public static SyncFrameInfo parseAc4SyncframeInfo(ParsableBitArray data) { + int headerSize = 0; + int syncWord = data.readBits(16); + headerSize += 2; + int frameSize = data.readBits(16); + headerSize += 2; + if (frameSize == 0xFFFF) { + frameSize = data.readBits(24); + headerSize += 3; // Extended frame_size + } + frameSize += headerSize; + if (syncWord == AC41_SYNCWORD) { + frameSize += 2; // crc_word + } + int bitstreamVersion = data.readBits(2); + if (bitstreamVersion == 3) { + bitstreamVersion += readVariableBits(data, /* bitsPerRead= */ 2); + } + int sequenceCounter = data.readBits(10); + if (data.readBit()) { // b_wait_frames + if (data.readBits(3) > 0) { // wait_frames + data.skipBits(2); // reserved + } + } + int sampleRate = data.readBit() ? 48000 : 44100; + int frameRateIndex = data.readBits(4); + int sampleCount = 0; + if (sampleRate == 44100 && frameRateIndex == 13) { + sampleCount = SAMPLE_COUNT[frameRateIndex]; + } else if (sampleRate == 48000 && frameRateIndex < SAMPLE_COUNT.length) { + sampleCount = SAMPLE_COUNT[frameRateIndex]; + switch (sequenceCounter % 5) { + case 1: // fall through + case 3: + if (frameRateIndex == 3 || frameRateIndex == 8) { + sampleCount++; + } + break; + case 2: + if (frameRateIndex == 8 || frameRateIndex == 11) { + sampleCount++; + } + break; + case 4: + if (frameRateIndex == 3 || frameRateIndex == 8 || frameRateIndex == 11) { + sampleCount++; + } + break; + default: + break; + } + } + return new SyncFrameInfo(bitstreamVersion, CHANNEL_COUNT_2, sampleRate, frameSize, sampleCount); + } + + /** + * Returns the size in bytes of the given AC-4 syncframe. + * + * @param data The syncframe to parse. + * @param syncword The syncword value for the syncframe. + * @return The syncframe size in bytes, or {@link C#LENGTH_UNSET} if the input is invalid. + */ + public static int parseAc4SyncframeSize(byte[] data, int syncword) { + if (data.length < 7) { + return C.LENGTH_UNSET; + } + int headerSize = 2; // syncword + int frameSize = ((data[2] & 0xFF) << 8) | (data[3] & 0xFF); + headerSize += 2; + if (frameSize == 0xFFFF) { + frameSize = ((data[4] & 0xFF) << 16) | ((data[5] & 0xFF) << 8) | (data[6] & 0xFF); + headerSize += 3; + } + if (syncword == AC41_SYNCWORD) { + headerSize += 2; + } + frameSize += headerSize; + return frameSize; + } + + /** + * Reads the number of audio samples represented by the given AC-4 syncframe. The buffer's + * position is not modified. + * + * @param buffer The {@link ByteBuffer} from which to read the syncframe. + * @return The number of audio samples represented by the syncframe. + */ + public static int parseAc4SyncframeAudioSampleCount(ByteBuffer buffer) { + byte[] bufferBytes = new byte[HEADER_SIZE_FOR_PARSER]; + int position = buffer.position(); + buffer.get(bufferBytes); + buffer.position(position); + return parseAc4SyncframeInfo(new ParsableBitArray(bufferBytes)).sampleCount; + } + + /** Populates {@code buffer} with an AC-4 sample header for a sample of the specified size. */ + public static void getAc4SampleHeader(int size, ParsableByteArray buffer) { + // See ETSI TS 103 190-1 V1.3.1, Annex G. + buffer.reset(SAMPLE_HEADER_SIZE); + buffer.data[0] = (byte) 0xAC; + buffer.data[1] = 0x40; + buffer.data[2] = (byte) 0xFF; + buffer.data[3] = (byte) 0xFF; + buffer.data[4] = (byte) ((size >> 16) & 0xFF); + buffer.data[5] = (byte) ((size >> 8) & 0xFF); + buffer.data[6] = (byte) (size & 0xFF); + } + + private static int readVariableBits(ParsableBitArray data, int bitsPerRead) { + int value = 0; + while (true) { + value += data.readBits(bitsPerRead); + if (!data.readBit()) { + break; + } + value++; + value <<= bitsPerRead; + } + return value; + } + + private Ac4Util() {} +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioAttributes.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioAttributes.java new file mode 100644 index 0000000000..d0f3fcb438 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioAttributes.java @@ -0,0 +1,162 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import android.annotation.TargetApi; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Attributes for audio playback, which configure the underlying platform + * {@link android.media.AudioTrack}. + *

+ * To set the audio attributes, create an instance using the {@link Builder} and either pass it to + * {@link org.mozilla.thirdparty.com.google.android.exoplayer2SimpleExoPlayer#setAudioAttributes(AudioAttributes)} or + * send a message of type {@link C#MSG_SET_AUDIO_ATTRIBUTES} to the audio renderers. + *

+ * This class is based on {@link android.media.AudioAttributes}, but can be used on all supported + * API versions. + */ +public final class AudioAttributes { + + public static final AudioAttributes DEFAULT = new Builder().build(); + + /** + * Builder for {@link AudioAttributes}. + */ + public static final class Builder { + + private @C.AudioContentType int contentType; + private @C.AudioFlags int flags; + private @C.AudioUsage int usage; + private @C.AudioAllowedCapturePolicy int allowedCapturePolicy; + + /** + * Creates a new builder for {@link AudioAttributes}. + * + *

By default the content type is {@link C#CONTENT_TYPE_UNKNOWN}, usage is {@link + * C#USAGE_MEDIA}, capture policy is {@link C#ALLOW_CAPTURE_BY_ALL} and no flags are set. + */ + public Builder() { + contentType = C.CONTENT_TYPE_UNKNOWN; + flags = 0; + usage = C.USAGE_MEDIA; + allowedCapturePolicy = C.ALLOW_CAPTURE_BY_ALL; + } + + /** + * @see android.media.AudioAttributes.Builder#setContentType(int) + */ + public Builder setContentType(@C.AudioContentType int contentType) { + this.contentType = contentType; + return this; + } + + /** + * @see android.media.AudioAttributes.Builder#setFlags(int) + */ + public Builder setFlags(@C.AudioFlags int flags) { + this.flags = flags; + return this; + } + + /** + * @see android.media.AudioAttributes.Builder#setUsage(int) + */ + public Builder setUsage(@C.AudioUsage int usage) { + this.usage = usage; + return this; + } + + /** See {@link android.media.AudioAttributes.Builder#setAllowedCapturePolicy(int)}. */ + public Builder setAllowedCapturePolicy(@C.AudioAllowedCapturePolicy int allowedCapturePolicy) { + this.allowedCapturePolicy = allowedCapturePolicy; + return this; + } + + /** Creates an {@link AudioAttributes} instance from this builder. */ + public AudioAttributes build() { + return new AudioAttributes(contentType, flags, usage, allowedCapturePolicy); + } + + } + + public final @C.AudioContentType int contentType; + public final @C.AudioFlags int flags; + public final @C.AudioUsage int usage; + public final @C.AudioAllowedCapturePolicy int allowedCapturePolicy; + + @Nullable private android.media.AudioAttributes audioAttributesV21; + + private AudioAttributes( + @C.AudioContentType int contentType, + @C.AudioFlags int flags, + @C.AudioUsage int usage, + @C.AudioAllowedCapturePolicy int allowedCapturePolicy) { + this.contentType = contentType; + this.flags = flags; + this.usage = usage; + this.allowedCapturePolicy = allowedCapturePolicy; + } + + /** + * Returns a {@link android.media.AudioAttributes} from this instance. + * + *

Field {@link AudioAttributes#allowedCapturePolicy} is ignored for API levels prior to 29. + */ + @TargetApi(21) + public android.media.AudioAttributes getAudioAttributesV21() { + if (audioAttributesV21 == null) { + android.media.AudioAttributes.Builder builder = + new android.media.AudioAttributes.Builder() + .setContentType(contentType) + .setFlags(flags) + .setUsage(usage); + if (Util.SDK_INT >= 29) { + builder.setAllowedCapturePolicy(allowedCapturePolicy); + } + audioAttributesV21 = builder.build(); + } + return audioAttributesV21; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + AudioAttributes other = (AudioAttributes) obj; + return this.contentType == other.contentType + && this.flags == other.flags + && this.usage == other.usage + && this.allowedCapturePolicy == other.allowedCapturePolicy; + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + contentType; + result = 31 * result + flags; + result = 31 * result + usage; + result = 31 * result + allowedCapturePolicy; + return result; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioCapabilities.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioCapabilities.java new file mode 100644 index 0000000000..f985891465 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioCapabilities.java @@ -0,0 +1,161 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import android.annotation.SuppressLint; +import android.annotation.TargetApi; +import android.content.Context; +import android.content.Intent; +import android.content.IntentFilter; +import android.media.AudioFormat; +import android.media.AudioManager; +import android.net.Uri; +import android.provider.Settings.Global; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** Represents the set of audio formats that a device is capable of playing. */ +@TargetApi(21) +public final class AudioCapabilities { + + private static final int DEFAULT_MAX_CHANNEL_COUNT = 8; + + /** The minimum audio capabilities supported by all devices. */ + public static final AudioCapabilities DEFAULT_AUDIO_CAPABILITIES = + new AudioCapabilities(new int[] {AudioFormat.ENCODING_PCM_16BIT}, DEFAULT_MAX_CHANNEL_COUNT); + + /** Audio capabilities when the device specifies external surround sound. */ + private static final AudioCapabilities EXTERNAL_SURROUND_SOUND_CAPABILITIES = + new AudioCapabilities( + new int[] { + AudioFormat.ENCODING_PCM_16BIT, AudioFormat.ENCODING_AC3, AudioFormat.ENCODING_E_AC3 + }, + DEFAULT_MAX_CHANNEL_COUNT); + + /** Global settings key for devices that can specify external surround sound. */ + private static final String EXTERNAL_SURROUND_SOUND_KEY = "external_surround_sound_enabled"; + + /** + * Returns the current audio capabilities for the device. + * + * @param context A context for obtaining the current audio capabilities. + * @return The current audio capabilities for the device. + */ + @SuppressWarnings("InlinedApi") + public static AudioCapabilities getCapabilities(Context context) { + Intent intent = + context.registerReceiver( + /* receiver= */ null, new IntentFilter(AudioManager.ACTION_HDMI_AUDIO_PLUG)); + return getCapabilities(context, intent); + } + + @SuppressLint("InlinedApi") + /* package */ static AudioCapabilities getCapabilities(Context context, @Nullable Intent intent) { + if (deviceMaySetExternalSurroundSoundGlobalSetting() + && Global.getInt(context.getContentResolver(), EXTERNAL_SURROUND_SOUND_KEY, 0) == 1) { + return EXTERNAL_SURROUND_SOUND_CAPABILITIES; + } + if (intent == null || intent.getIntExtra(AudioManager.EXTRA_AUDIO_PLUG_STATE, 0) == 0) { + return DEFAULT_AUDIO_CAPABILITIES; + } + return new AudioCapabilities( + intent.getIntArrayExtra(AudioManager.EXTRA_ENCODINGS), + intent.getIntExtra( + AudioManager.EXTRA_MAX_CHANNEL_COUNT, /* defaultValue= */ DEFAULT_MAX_CHANNEL_COUNT)); + } + + /** + * Returns the global settings {@link Uri} used by the device to specify external surround sound, + * or null if the device does not support this functionality. + */ + @Nullable + /* package */ static Uri getExternalSurroundSoundGlobalSettingUri() { + return deviceMaySetExternalSurroundSoundGlobalSetting() + ? Global.getUriFor(EXTERNAL_SURROUND_SOUND_KEY) + : null; + } + + private final int[] supportedEncodings; + private final int maxChannelCount; + + /** + * Constructs new audio capabilities based on a set of supported encodings and a maximum channel + * count. + * + *

Applications should generally call {@link #getCapabilities(Context)} to obtain an instance + * based on the capabilities advertised by the platform, rather than calling this constructor. + * + * @param supportedEncodings Supported audio encodings from {@link android.media.AudioFormat}'s + * {@code ENCODING_*} constants. Passing {@code null} indicates that no encodings are + * supported. + * @param maxChannelCount The maximum number of audio channels that can be played simultaneously. + */ + public AudioCapabilities(@Nullable int[] supportedEncodings, int maxChannelCount) { + if (supportedEncodings != null) { + this.supportedEncodings = Arrays.copyOf(supportedEncodings, supportedEncodings.length); + Arrays.sort(this.supportedEncodings); + } else { + this.supportedEncodings = new int[0]; + } + this.maxChannelCount = maxChannelCount; + } + + /** + * Returns whether this device supports playback of the specified audio {@code encoding}. + * + * @param encoding One of {@link android.media.AudioFormat}'s {@code ENCODING_*} constants. + * @return Whether this device supports playback the specified audio {@code encoding}. + */ + public boolean supportsEncoding(int encoding) { + return Arrays.binarySearch(supportedEncodings, encoding) >= 0; + } + + /** + * Returns the maximum number of channels the device can play at the same time. + */ + public int getMaxChannelCount() { + return maxChannelCount; + } + + @Override + public boolean equals(@Nullable Object other) { + if (this == other) { + return true; + } + if (!(other instanceof AudioCapabilities)) { + return false; + } + AudioCapabilities audioCapabilities = (AudioCapabilities) other; + return Arrays.equals(supportedEncodings, audioCapabilities.supportedEncodings) + && maxChannelCount == audioCapabilities.maxChannelCount; + } + + @Override + public int hashCode() { + return maxChannelCount + 31 * Arrays.hashCode(supportedEncodings); + } + + @Override + public String toString() { + return "AudioCapabilities[maxChannelCount=" + maxChannelCount + + ", supportedEncodings=" + Arrays.toString(supportedEncodings) + "]"; + } + + private static boolean deviceMaySetExternalSurroundSoundGlobalSetting() { + return Util.SDK_INT >= 17 && "Amazon".equals(Util.MANUFACTURER); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioCapabilitiesReceiver.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioCapabilitiesReceiver.java new file mode 100644 index 0000000000..d96fd32f53 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioCapabilitiesReceiver.java @@ -0,0 +1,166 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import android.content.BroadcastReceiver; +import android.content.ContentResolver; +import android.content.Context; +import android.content.Intent; +import android.content.IntentFilter; +import android.database.ContentObserver; +import android.media.AudioManager; +import android.net.Uri; +import android.os.Handler; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Receives broadcast events indicating changes to the device's audio capabilities, notifying a + * {@link Listener} when audio capability changes occur. + */ +public final class AudioCapabilitiesReceiver { + + /** + * Listener notified when audio capabilities change. + */ + public interface Listener { + + /** + * Called when the audio capabilities change. + * + * @param audioCapabilities The current audio capabilities for the device. + */ + void onAudioCapabilitiesChanged(AudioCapabilities audioCapabilities); + + } + + private final Context context; + private final Listener listener; + private final Handler handler; + @Nullable private final BroadcastReceiver receiver; + @Nullable private final ExternalSurroundSoundSettingObserver externalSurroundSoundSettingObserver; + + /* package */ @Nullable AudioCapabilities audioCapabilities; + private boolean registered; + + /** + * @param context A context for registering the receiver. + * @param listener The listener to notify when audio capabilities change. + */ + public AudioCapabilitiesReceiver(Context context, Listener listener) { + context = context.getApplicationContext(); + this.context = context; + this.listener = Assertions.checkNotNull(listener); + handler = new Handler(Util.getLooper()); + receiver = Util.SDK_INT >= 21 ? new HdmiAudioPlugBroadcastReceiver() : null; + Uri externalSurroundSoundUri = AudioCapabilities.getExternalSurroundSoundGlobalSettingUri(); + externalSurroundSoundSettingObserver = + externalSurroundSoundUri != null + ? new ExternalSurroundSoundSettingObserver( + handler, context.getContentResolver(), externalSurroundSoundUri) + : null; + } + + /** + * Registers the receiver, meaning it will notify the listener when audio capability changes + * occur. The current audio capabilities will be returned. It is important to call + * {@link #unregister} when the receiver is no longer required. + * + * @return The current audio capabilities for the device. + */ + @SuppressWarnings("InlinedApi") + public AudioCapabilities register() { + if (registered) { + return Assertions.checkNotNull(audioCapabilities); + } + registered = true; + if (externalSurroundSoundSettingObserver != null) { + externalSurroundSoundSettingObserver.register(); + } + Intent stickyIntent = null; + if (receiver != null) { + IntentFilter intentFilter = new IntentFilter(AudioManager.ACTION_HDMI_AUDIO_PLUG); + stickyIntent = + context.registerReceiver( + receiver, intentFilter, /* broadcastPermission= */ null, handler); + } + audioCapabilities = AudioCapabilities.getCapabilities(context, stickyIntent); + return audioCapabilities; + } + + /** + * Unregisters the receiver, meaning it will no longer notify the listener when audio capability + * changes occur. + */ + public void unregister() { + if (!registered) { + return; + } + audioCapabilities = null; + if (receiver != null) { + context.unregisterReceiver(receiver); + } + if (externalSurroundSoundSettingObserver != null) { + externalSurroundSoundSettingObserver.unregister(); + } + registered = false; + } + + private void onNewAudioCapabilities(AudioCapabilities newAudioCapabilities) { + if (registered && !newAudioCapabilities.equals(audioCapabilities)) { + audioCapabilities = newAudioCapabilities; + listener.onAudioCapabilitiesChanged(newAudioCapabilities); + } + } + + private final class HdmiAudioPlugBroadcastReceiver extends BroadcastReceiver { + + @Override + public void onReceive(Context context, Intent intent) { + if (!isInitialStickyBroadcast()) { + onNewAudioCapabilities(AudioCapabilities.getCapabilities(context, intent)); + } + } + } + + private final class ExternalSurroundSoundSettingObserver extends ContentObserver { + + private final ContentResolver resolver; + private final Uri settingUri; + + public ExternalSurroundSoundSettingObserver( + Handler handler, ContentResolver resolver, Uri settingUri) { + super(handler); + this.resolver = resolver; + this.settingUri = settingUri; + } + + public void register() { + resolver.registerContentObserver(settingUri, /* notifyForDescendants= */ false, this); + } + + public void unregister() { + resolver.unregisterContentObserver(this); + } + + @Override + public void onChange(boolean selfChange) { + onNewAudioCapabilities(AudioCapabilities.getCapabilities(context)); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioDecoderException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioDecoderException.java new file mode 100644 index 0000000000..0f4ac159b9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioDecoderException.java @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +/** Thrown when an audio decoder error occurs. */ +public class AudioDecoderException extends Exception { + + /** @param message The detail message for this exception. */ + public AudioDecoderException(String message) { + super(message); + } + + /** + * @param message The detail message for this exception. + * @param cause the cause (which is saved for later retrieval by the {@link #getCause()} method). + * A null value is permitted, and indicates that the cause is nonexistent or unknown. + */ + public AudioDecoderException(String message, Throwable cause) { + super(message, cause); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioListener.java new file mode 100644 index 0000000000..457f52b887 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioListener.java @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +/** A listener for changes in audio configuration. */ +public interface AudioListener { + + /** + * Called when the audio session is set. + * + * @param audioSessionId The audio session id. + */ + default void onAudioSessionId(int audioSessionId) {} + + /** + * Called when the audio attributes change. + * + * @param audioAttributes The audio attributes. + */ + default void onAudioAttributesChanged(AudioAttributes audioAttributes) {} + + /** + * Called when the volume changes. + * + * @param volume The new volume, with 0 being silence and 1 being unity gain. + */ + default void onVolumeChanged(float volume) {} +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioProcessor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioProcessor.java new file mode 100644 index 0000000000..e0814314ca --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioProcessor.java @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; + +/** + * Interface for audio processors, which take audio data as input and transform it, potentially + * modifying its channel count, encoding and/or sample rate. + * + *

In addition to being able to modify the format of audio, implementations may allow parameters + * to be set that affect the output audio and whether the processor is active/inactive. + */ +public interface AudioProcessor { + + /** PCM audio format that may be handled by an audio processor. */ + final class AudioFormat { + public static final AudioFormat NOT_SET = + new AudioFormat( + /* sampleRate= */ Format.NO_VALUE, + /* channelCount= */ Format.NO_VALUE, + /* encoding= */ Format.NO_VALUE); + + /** The sample rate in Hertz. */ + public final int sampleRate; + /** The number of interleaved channels. */ + public final int channelCount; + /** The type of linear PCM encoding. */ + @C.PcmEncoding public final int encoding; + /** The number of bytes used to represent one audio frame. */ + public final int bytesPerFrame; + + public AudioFormat(int sampleRate, int channelCount, @C.PcmEncoding int encoding) { + this.sampleRate = sampleRate; + this.channelCount = channelCount; + this.encoding = encoding; + bytesPerFrame = + Util.isEncodingLinearPcm(encoding) + ? Util.getPcmFrameSize(encoding, channelCount) + : Format.NO_VALUE; + } + + @Override + public String toString() { + return "AudioFormat[" + + "sampleRate=" + + sampleRate + + ", channelCount=" + + channelCount + + ", encoding=" + + encoding + + ']'; + } + } + + /** Exception thrown when a processor can't be configured for a given input audio format. */ + final class UnhandledAudioFormatException extends Exception { + + public UnhandledAudioFormatException(AudioFormat inputAudioFormat) { + super("Unhandled format: " + inputAudioFormat); + } + + } + + /** An empty, direct {@link ByteBuffer}. */ + ByteBuffer EMPTY_BUFFER = ByteBuffer.allocateDirect(0).order(ByteOrder.nativeOrder()); + + /** + * Configures the processor to process input audio with the specified format. After calling this + * method, call {@link #isActive()} to determine whether the audio processor is active. Returns + * the configured output audio format if this instance is active. + * + *

After calling this method, it is necessary to {@link #flush()} the processor to apply the + * new configuration. Before applying the new configuration, it is safe to queue input and get + * output in the old input/output formats. Call {@link #queueEndOfStream()} when no more input + * will be supplied in the old input format. + * + * @param inputAudioFormat The format of audio that will be queued after the next call to {@link + * #flush()}. + * @return The configured output audio format if this instance is {@link #isActive() active}. + * @throws UnhandledAudioFormatException Thrown if the specified format can't be handled as input. + */ + AudioFormat configure(AudioFormat inputAudioFormat) throws UnhandledAudioFormatException; + + /** Returns whether the processor is configured and will process input buffers. */ + boolean isActive(); + + /** + * Queues audio data between the position and limit of the input {@code buffer} for processing. + * {@code buffer} must be a direct byte buffer with native byte order. Its contents are treated as + * read-only. Its position will be advanced by the number of bytes consumed (which may be zero). + * The caller retains ownership of the provided buffer. Calling this method invalidates any + * previous buffer returned by {@link #getOutput()}. + * + * @param buffer The input buffer to process. + */ + void queueInput(ByteBuffer buffer); + + /** + * Queues an end of stream signal. After this method has been called, + * {@link #queueInput(ByteBuffer)} may not be called until after the next call to + * {@link #flush()}. Calling {@link #getOutput()} will return any remaining output data. Multiple + * calls may be required to read all of the remaining output data. {@link #isEnded()} will return + * {@code true} once all remaining output data has been read. + */ + void queueEndOfStream(); + + /** + * Returns a buffer containing processed output data between its position and limit. The buffer + * will always be a direct byte buffer with native byte order. Calling this method invalidates any + * previously returned buffer. The buffer will be empty if no output is available. + * + * @return A buffer containing processed output data between its position and limit. + */ + ByteBuffer getOutput(); + + /** + * Returns whether this processor will return no more output from {@link #getOutput()} until it + * has been {@link #flush()}ed and more input has been queued. + */ + boolean isEnded(); + + /** + * Clears any buffered data and pending output. If the audio processor is active, also prepares + * the audio processor to receive a new stream of input in the last configured (pending) format. + */ + void flush(); + + /** Resets the processor to its unconfigured state, releasing any resources. */ + void reset(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioRendererEventListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioRendererEventListener.java new file mode 100644 index 0000000000..bb1ae72855 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioRendererEventListener.java @@ -0,0 +1,174 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Handler; +import android.os.SystemClock; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Renderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderCounters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * Listener of audio {@link Renderer} events. All methods have no-op default implementations to + * allow selective overrides. + */ +public interface AudioRendererEventListener { + + /** + * Called when the renderer is enabled. + * + * @param counters {@link DecoderCounters} that will be updated by the renderer for as long as it + * remains enabled. + */ + default void onAudioEnabled(DecoderCounters counters) {} + + /** + * Called when the audio session is set. + * + * @param audioSessionId The audio session id. + */ + default void onAudioSessionId(int audioSessionId) {} + + /** + * Called when a decoder is created. + * + * @param decoderName The decoder that was created. + * @param initializedTimestampMs {@link SystemClock#elapsedRealtime()} when initialization + * finished. + * @param initializationDurationMs The time taken to initialize the decoder in milliseconds. + */ + default void onAudioDecoderInitialized( + String decoderName, long initializedTimestampMs, long initializationDurationMs) {} + + /** + * Called when the format of the media being consumed by the renderer changes. + * + * @param format The new format. + */ + default void onAudioInputFormatChanged(Format format) {} + + /** + * Called when an {@link AudioSink} underrun occurs. + * + * @param bufferSize The size of the {@link AudioSink}'s buffer, in bytes. + * @param bufferSizeMs The size of the {@link AudioSink}'s buffer, in milliseconds, if it is + * configured for PCM output. {@link C#TIME_UNSET} if it is configured for passthrough output, + * as the buffered media can have a variable bitrate so the duration may be unknown. + * @param elapsedSinceLastFeedMs The time since the {@link AudioSink} was last fed data. + */ + default void onAudioSinkUnderrun( + int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs) {} + + /** + * Called when the renderer is disabled. + * + * @param counters {@link DecoderCounters} that were updated by the renderer. + */ + default void onAudioDisabled(DecoderCounters counters) {} + + /** + * Dispatches events to a {@link AudioRendererEventListener}. + */ + final class EventDispatcher { + + @Nullable private final Handler handler; + @Nullable private final AudioRendererEventListener listener; + + /** + * @param handler A handler for dispatching events, or null if creating a dummy instance. + * @param listener The listener to which events should be dispatched, or null if creating a + * dummy instance. + */ + public EventDispatcher(@Nullable Handler handler, + @Nullable AudioRendererEventListener listener) { + this.handler = listener != null ? Assertions.checkNotNull(handler) : null; + this.listener = listener; + } + + /** + * Invokes {@link AudioRendererEventListener#onAudioEnabled(DecoderCounters)}. + */ + public void enabled(final DecoderCounters decoderCounters) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onAudioEnabled(decoderCounters)); + } + } + + /** + * Invokes {@link AudioRendererEventListener#onAudioDecoderInitialized(String, long, long)}. + */ + public void decoderInitialized(final String decoderName, + final long initializedTimestampMs, final long initializationDurationMs) { + if (handler != null) { + handler.post( + () -> + castNonNull(listener) + .onAudioDecoderInitialized( + decoderName, initializedTimestampMs, initializationDurationMs)); + } + } + + /** + * Invokes {@link AudioRendererEventListener#onAudioInputFormatChanged(Format)}. + */ + public void inputFormatChanged(final Format format) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onAudioInputFormatChanged(format)); + } + } + + /** + * Invokes {@link AudioRendererEventListener#onAudioSinkUnderrun(int, long, long)}. + */ + public void audioTrackUnderrun(final int bufferSize, final long bufferSizeMs, + final long elapsedSinceLastFeedMs) { + if (handler != null) { + handler.post( + () -> + castNonNull(listener) + .onAudioSinkUnderrun(bufferSize, bufferSizeMs, elapsedSinceLastFeedMs)); + } + } + + /** + * Invokes {@link AudioRendererEventListener#onAudioDisabled(DecoderCounters)}. + */ + public void disabled(final DecoderCounters counters) { + counters.ensureUpdated(); + if (handler != null) { + handler.post( + () -> { + counters.ensureUpdated(); + castNonNull(listener).onAudioDisabled(counters); + }); + } + } + + /** + * Invokes {@link AudioRendererEventListener#onAudioSessionId(int)}. + */ + public void audioSessionId(final int audioSessionId) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onAudioSessionId(audioSessionId)); + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioSink.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioSink.java new file mode 100644 index 0000000000..db87e28e7f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioSink.java @@ -0,0 +1,329 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import android.media.AudioTrack; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; +import java.nio.ByteBuffer; + +/** + * A sink that consumes audio data. + * + *

Before starting playback, specify the input audio format by calling {@link #configure(int, + * int, int, int, int[], int, int)}. + * + *

Call {@link #handleBuffer(ByteBuffer, long)} to write data, and {@link #handleDiscontinuity()} + * when the data being fed is discontinuous. Call {@link #play()} to start playing the written data. + * + *

Call {@link #configure(int, int, int, int, int[], int, int)} whenever the input format + * changes. The sink will be reinitialized on the next call to {@link #handleBuffer(ByteBuffer, + * long)}. + * + *

Call {@link #flush()} to prepare the sink to receive audio data from a new playback position. + * + *

Call {@link #playToEndOfStream()} repeatedly to play out all data when no more input buffers + * will be provided via {@link #handleBuffer(ByteBuffer, long)} until the next {@link #flush()}. + * Call {@link #reset()} when the instance is no longer required. + * + *

The implementation may be backed by a platform {@link AudioTrack}. In this case, {@link + * #setAudioSessionId(int)}, {@link #setAudioAttributes(AudioAttributes)}, {@link + * #enableTunnelingV21(int)} and/or {@link #disableTunneling()} may be called before writing data to + * the sink. These methods may also be called after writing data to the sink, in which case it will + * be reinitialized as required. For implementations that are not based on platform {@link + * AudioTrack}s, calling methods relating to audio sessions, audio attributes, and tunneling may + * have no effect. + */ +public interface AudioSink { + + /** + * Listener for audio sink events. + */ + interface Listener { + + /** + * Called if the audio sink has started rendering audio to a new platform audio session. + * + * @param audioSessionId The newly generated audio session's identifier. + */ + void onAudioSessionId(int audioSessionId); + + /** + * Called when the audio sink handles a buffer whose timestamp is discontinuous with the last + * buffer handled since it was reset. + */ + void onPositionDiscontinuity(); + + /** + * Called when the audio sink runs out of data. + *

+ * An audio sink implementation may never call this method (for example, if audio data is + * consumed in batches rather than based on the sink's own clock). + * + * @param bufferSize The size of the sink's buffer, in bytes. + * @param bufferSizeMs The size of the sink's buffer, in milliseconds, if it is configured for + * PCM output. {@link C#TIME_UNSET} if it is configured for encoded audio output, as the + * buffered media can have a variable bitrate so the duration may be unknown. + * @param elapsedSinceLastFeedMs The time since the sink was last fed data, in milliseconds. + */ + void onUnderrun(int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs); + + } + + /** + * Thrown when a failure occurs configuring the sink. + */ + final class ConfigurationException extends Exception { + + /** + * Creates a new configuration exception with the specified {@code cause} and no message. + */ + public ConfigurationException(Throwable cause) { + super(cause); + } + + /** + * Creates a new configuration exception with the specified {@code message} and no cause. + */ + public ConfigurationException(String message) { + super(message); + } + + } + + /** + * Thrown when a failure occurs initializing the sink. + */ + final class InitializationException extends Exception { + + /** + * The underlying {@link AudioTrack}'s state, if applicable. + */ + public final int audioTrackState; + + /** + * @param audioTrackState The underlying {@link AudioTrack}'s state, if applicable. + * @param sampleRate The requested sample rate in Hz. + * @param channelConfig The requested channel configuration. + * @param bufferSize The requested buffer size in bytes. + */ + public InitializationException(int audioTrackState, int sampleRate, int channelConfig, + int bufferSize) { + super("AudioTrack init failed: " + audioTrackState + ", Config(" + sampleRate + ", " + + channelConfig + ", " + bufferSize + ")"); + this.audioTrackState = audioTrackState; + } + + } + + /** + * Thrown when a failure occurs writing to the sink. + */ + final class WriteException extends Exception { + + /** + * The error value returned from the sink implementation. If the sink writes to a platform + * {@link AudioTrack}, this will be the error value returned from + * {@link AudioTrack#write(byte[], int, int)} or {@link AudioTrack#write(ByteBuffer, int, int)}. + * Otherwise, the meaning of the error code depends on the sink implementation. + */ + public final int errorCode; + + /** + * @param errorCode The error value returned from the sink implementation. + */ + public WriteException(int errorCode) { + super("AudioTrack write failed: " + errorCode); + this.errorCode = errorCode; + } + + } + + /** + * Returned by {@link #getCurrentPositionUs(boolean)} when the position is not set. + */ + long CURRENT_POSITION_NOT_SET = Long.MIN_VALUE; + + /** + * Sets the listener for sink events, which should be the audio renderer. + * + * @param listener The listener for sink events, which should be the audio renderer. + */ + void setListener(Listener listener); + + /** + * Returns whether the sink supports the audio format. + * + * @param channelCount The number of channels, or {@link Format#NO_VALUE} if not known. + * @param encoding The audio encoding, or {@link Format#NO_VALUE} if not known. + * @return Whether the sink supports the audio format. + */ + boolean supportsOutput(int channelCount, @C.Encoding int encoding); + + /** + * Returns the playback position in the stream starting at zero, in microseconds, or + * {@link #CURRENT_POSITION_NOT_SET} if it is not yet available. + * + * @param sourceEnded Specify {@code true} if no more input buffers will be provided. + * @return The playback position relative to the start of playback, in microseconds. + */ + long getCurrentPositionUs(boolean sourceEnded); + + /** + * Configures (or reconfigures) the sink. + * + * @param inputEncoding The encoding of audio data provided in the input buffers. + * @param inputChannelCount The number of channels. + * @param inputSampleRate The sample rate in Hz. + * @param specifiedBufferSize A specific size for the playback buffer in bytes, or 0 to infer a + * suitable buffer size. + * @param outputChannels A mapping from input to output channels that is applied to this sink's + * input as a preprocessing step, if handling PCM input. Specify {@code null} to leave the + * input unchanged. Otherwise, the element at index {@code i} specifies index of the input + * channel to map to output channel {@code i} when preprocessing input buffers. After the map + * is applied the audio data will have {@code outputChannels.length} channels. + * @param trimStartFrames The number of audio frames to trim from the start of data written to the + * sink after this call. + * @param trimEndFrames The number of audio frames to trim from data written to the sink + * immediately preceding the next call to {@link #flush()} or this method. + * @throws ConfigurationException If an error occurs configuring the sink. + */ + void configure( + @C.Encoding int inputEncoding, + int inputChannelCount, + int inputSampleRate, + int specifiedBufferSize, + @Nullable int[] outputChannels, + int trimStartFrames, + int trimEndFrames) + throws ConfigurationException; + + /** + * Starts or resumes consuming audio if initialized. + */ + void play(); + + /** Signals to the sink that the next buffer may be discontinuous with the previous buffer. */ + void handleDiscontinuity(); + + /** + * Attempts to process data from a {@link ByteBuffer}, starting from its current position and + * ending at its limit (exclusive). The position of the {@link ByteBuffer} is advanced by the + * number of bytes that were handled. {@link Listener#onPositionDiscontinuity()} will be called if + * {@code presentationTimeUs} is discontinuous with the last buffer handled since the last reset. + * + *

Returns whether the data was handled in full. If the data was not handled in full then the + * same {@link ByteBuffer} must be provided to subsequent calls until it has been fully consumed, + * except in the case of an intervening call to {@link #flush()} (or to {@link #configure(int, + * int, int, int, int[], int, int)} that causes the sink to be flushed). + * + * @param buffer The buffer containing audio data. + * @param presentationTimeUs The presentation timestamp of the buffer in microseconds. + * @return Whether the buffer was handled fully. + * @throws InitializationException If an error occurs initializing the sink. + * @throws WriteException If an error occurs writing the audio data. + */ + boolean handleBuffer(ByteBuffer buffer, long presentationTimeUs) + throws InitializationException, WriteException; + + /** + * Processes any remaining data. {@link #isEnded()} will return {@code true} when no data remains. + * + * @throws WriteException If an error occurs draining data to the sink. + */ + void playToEndOfStream() throws WriteException; + + /** + * Returns whether {@link #playToEndOfStream} has been called and all buffers have been processed. + */ + boolean isEnded(); + + /** + * Returns whether the sink has data pending that has not been consumed yet. + */ + boolean hasPendingData(); + + /** + * Attempts to set the playback parameters. The audio sink may override these parameters if they + * are not supported. + * + * @param playbackParameters The new playback parameters to attempt to set. + */ + void setPlaybackParameters(PlaybackParameters playbackParameters); + + /** + * Gets the active {@link PlaybackParameters}. + */ + PlaybackParameters getPlaybackParameters(); + + /** + * Sets attributes for audio playback. If the attributes have changed and if the sink is not + * configured for use with tunneling, then it is reset and the audio session id is cleared. + *

+ * If the sink is configured for use with tunneling then the audio attributes are ignored. The + * sink is not reset and the audio session id is not cleared. The passed attributes will be used + * if the sink is later re-configured into non-tunneled mode. + * + * @param audioAttributes The attributes for audio playback. + */ + void setAudioAttributes(AudioAttributes audioAttributes); + + /** Sets the audio session id. */ + void setAudioSessionId(int audioSessionId); + + /** Sets the auxiliary effect. */ + void setAuxEffectInfo(AuxEffectInfo auxEffectInfo); + + /** + * Enables tunneling, if possible. The sink is reset if tunneling was previously disabled or if + * the audio session id has changed. Enabling tunneling is only possible if the sink is based on a + * platform {@link AudioTrack}, and requires platform API version 21 onwards. + * + * @param tunnelingAudioSessionId The audio session id to use. + * @throws IllegalStateException Thrown if enabling tunneling on platform API version < 21. + */ + void enableTunnelingV21(int tunnelingAudioSessionId); + + /** + * Disables tunneling. If tunneling was previously enabled then the sink is reset and any audio + * session id is cleared. + */ + void disableTunneling(); + + /** + * Sets the playback volume. + * + * @param volume A volume in the range [0.0, 1.0]. + */ + void setVolume(float volume); + + /** + * Pauses playback. + */ + void pause(); + + /** + * Flushes the sink, after which it is ready to receive buffers from a new playback position. + * + *

The audio session may remain active until {@link #reset()} is called. + */ + void flush(); + + /** Resets the renderer, releasing any resources that it currently holds. */ + void reset(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioTimestampPoller.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioTimestampPoller.java new file mode 100644 index 0000000000..153947fec0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioTimestampPoller.java @@ -0,0 +1,309 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import android.annotation.TargetApi; +import android.media.AudioTimestamp; +import android.media.AudioTrack; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Polls the {@link AudioTrack} timestamp, if the platform supports it, taking care of polling at + * the appropriate rate to detect when the timestamp starts to advance. + * + *

When the audio track isn't paused, call {@link #maybePollTimestamp(long)} regularly to check + * for timestamp updates. If it returns {@code true}, call {@link #getTimestampPositionFrames()} and + * {@link #getTimestampSystemTimeUs()} to access the updated timestamp, then call {@link + * #acceptTimestamp()} or {@link #rejectTimestamp()} to accept or reject it. + * + *

If {@link #hasTimestamp()} returns {@code true}, call {@link #getTimestampSystemTimeUs()} to + * get the system time at which the latest timestamp was sampled and {@link + * #getTimestampPositionFrames()} to get its position in frames. If {@link #isTimestampAdvancing()} + * returns {@code true}, the caller should assume that the timestamp has been increasing in real + * time since it was sampled. Otherwise, it may be stationary. + * + *

Call {@link #reset()} when pausing or resuming the track. + */ +/* package */ final class AudioTimestampPoller { + + /** Timestamp polling states. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + STATE_INITIALIZING, + STATE_TIMESTAMP, + STATE_TIMESTAMP_ADVANCING, + STATE_NO_TIMESTAMP, + STATE_ERROR + }) + private @interface State {} + /** State when first initializing. */ + private static final int STATE_INITIALIZING = 0; + /** State when we have a timestamp and we don't know if it's advancing. */ + private static final int STATE_TIMESTAMP = 1; + /** State when we have a timestamp and we know it is advancing. */ + private static final int STATE_TIMESTAMP_ADVANCING = 2; + /** State when the no timestamp is available. */ + private static final int STATE_NO_TIMESTAMP = 3; + /** State when the last timestamp was rejected as invalid. */ + private static final int STATE_ERROR = 4; + + /** The polling interval for {@link #STATE_INITIALIZING} and {@link #STATE_TIMESTAMP}. */ + private static final int FAST_POLL_INTERVAL_US = 5_000; + /** + * The polling interval for {@link #STATE_TIMESTAMP_ADVANCING} and {@link #STATE_NO_TIMESTAMP}. + */ + private static final int SLOW_POLL_INTERVAL_US = 10_000_000; + /** The polling interval for {@link #STATE_ERROR}. */ + private static final int ERROR_POLL_INTERVAL_US = 500_000; + + /** + * The minimum duration to remain in {@link #STATE_INITIALIZING} if no timestamps are being + * returned before transitioning to {@link #STATE_NO_TIMESTAMP}. + */ + private static final int INITIALIZING_DURATION_US = 500_000; + + @Nullable private final AudioTimestampV19 audioTimestamp; + + private @State int state; + private long initializeSystemTimeUs; + private long sampleIntervalUs; + private long lastTimestampSampleTimeUs; + private long initialTimestampPositionFrames; + + /** + * Creates a new audio timestamp poller. + * + * @param audioTrack The audio track that will provide timestamps, if the platform supports it. + */ + public AudioTimestampPoller(AudioTrack audioTrack) { + if (Util.SDK_INT >= 19) { + audioTimestamp = new AudioTimestampV19(audioTrack); + reset(); + } else { + audioTimestamp = null; + updateState(STATE_NO_TIMESTAMP); + } + } + + /** + * Polls the timestamp if required and returns whether it was updated. If {@code true}, the latest + * timestamp is available via {@link #getTimestampSystemTimeUs()} and {@link + * #getTimestampPositionFrames()}, and the caller should call {@link #acceptTimestamp()} if the + * timestamp was valid, or {@link #rejectTimestamp()} otherwise. The values returned by {@link + * #hasTimestamp()} and {@link #isTimestampAdvancing()} may be updated. + * + * @param systemTimeUs The current system time, in microseconds. + * @return Whether the timestamp was updated. + */ + public boolean maybePollTimestamp(long systemTimeUs) { + if (audioTimestamp == null || (systemTimeUs - lastTimestampSampleTimeUs) < sampleIntervalUs) { + return false; + } + lastTimestampSampleTimeUs = systemTimeUs; + boolean updatedTimestamp = audioTimestamp.maybeUpdateTimestamp(); + switch (state) { + case STATE_INITIALIZING: + if (updatedTimestamp) { + if (audioTimestamp.getTimestampSystemTimeUs() >= initializeSystemTimeUs) { + // We have an initial timestamp, but don't know if it's advancing yet. + initialTimestampPositionFrames = audioTimestamp.getTimestampPositionFrames(); + updateState(STATE_TIMESTAMP); + } else { + // Drop the timestamp, as it was sampled before the last reset. + updatedTimestamp = false; + } + } else if (systemTimeUs - initializeSystemTimeUs > INITIALIZING_DURATION_US) { + // We haven't received a timestamp for a while, so they probably aren't available for the + // current audio route. Poll infrequently in case the route changes later. + // TODO: Ideally we should listen for audio route changes in order to detect when a + // timestamp becomes available again. + updateState(STATE_NO_TIMESTAMP); + } + break; + case STATE_TIMESTAMP: + if (updatedTimestamp) { + long timestampPositionFrames = audioTimestamp.getTimestampPositionFrames(); + if (timestampPositionFrames > initialTimestampPositionFrames) { + updateState(STATE_TIMESTAMP_ADVANCING); + } + } else { + reset(); + } + break; + case STATE_TIMESTAMP_ADVANCING: + if (!updatedTimestamp) { + // The audio route may have changed, so reset polling. + reset(); + } + break; + case STATE_NO_TIMESTAMP: + if (updatedTimestamp) { + // The audio route may have changed, so reset polling. + reset(); + } + break; + case STATE_ERROR: + // Do nothing. If the caller accepts any new timestamp we'll reset polling. + break; + default: + throw new IllegalStateException(); + } + return updatedTimestamp; + } + + /** + * Rejects the timestamp last polled in {@link #maybePollTimestamp(long)}. The instance will enter + * the error state and poll timestamps infrequently until the next call to {@link + * #acceptTimestamp()}. + */ + public void rejectTimestamp() { + updateState(STATE_ERROR); + } + + /** + * Accepts the timestamp last polled in {@link #maybePollTimestamp(long)}. If the instance is in + * the error state, it will begin to poll timestamps frequently again. + */ + public void acceptTimestamp() { + if (state == STATE_ERROR) { + reset(); + } + } + + /** + * Returns whether this instance has a timestamp that can be used to calculate the audio track + * position. If {@code true}, call {@link #getTimestampSystemTimeUs()} and {@link + * #getTimestampSystemTimeUs()} to access the timestamp. + */ + public boolean hasTimestamp() { + return state == STATE_TIMESTAMP || state == STATE_TIMESTAMP_ADVANCING; + } + + /** + * Returns whether the timestamp appears to be advancing. If {@code true}, call {@link + * #getTimestampSystemTimeUs()} and {@link #getTimestampSystemTimeUs()} to access the timestamp. A + * current position for the track can be extrapolated based on elapsed real time since the system + * time at which the timestamp was sampled. + */ + public boolean isTimestampAdvancing() { + return state == STATE_TIMESTAMP_ADVANCING; + } + + /** Resets polling. Should be called whenever the audio track is paused or resumed. */ + public void reset() { + if (audioTimestamp != null) { + updateState(STATE_INITIALIZING); + } + } + + /** + * If {@link #maybePollTimestamp(long)} or {@link #hasTimestamp()} returned {@code true}, returns + * the system time at which the latest timestamp was sampled, in microseconds. + */ + public long getTimestampSystemTimeUs() { + return audioTimestamp != null ? audioTimestamp.getTimestampSystemTimeUs() : C.TIME_UNSET; + } + + /** + * If {@link #maybePollTimestamp(long)} or {@link #hasTimestamp()} returned {@code true}, returns + * the latest timestamp's position in frames. + */ + public long getTimestampPositionFrames() { + return audioTimestamp != null ? audioTimestamp.getTimestampPositionFrames() : C.POSITION_UNSET; + } + + private void updateState(@State int state) { + this.state = state; + switch (state) { + case STATE_INITIALIZING: + // Force polling a timestamp immediately, and poll quickly. + lastTimestampSampleTimeUs = 0; + initialTimestampPositionFrames = C.POSITION_UNSET; + initializeSystemTimeUs = System.nanoTime() / 1000; + sampleIntervalUs = FAST_POLL_INTERVAL_US; + break; + case STATE_TIMESTAMP: + sampleIntervalUs = FAST_POLL_INTERVAL_US; + break; + case STATE_TIMESTAMP_ADVANCING: + case STATE_NO_TIMESTAMP: + sampleIntervalUs = SLOW_POLL_INTERVAL_US; + break; + case STATE_ERROR: + sampleIntervalUs = ERROR_POLL_INTERVAL_US; + break; + default: + throw new IllegalStateException(); + } + } + + @TargetApi(19) + private static final class AudioTimestampV19 { + + private final AudioTrack audioTrack; + private final AudioTimestamp audioTimestamp; + + private long rawTimestampFramePositionWrapCount; + private long lastTimestampRawPositionFrames; + private long lastTimestampPositionFrames; + + /** + * Creates a new {@link AudioTimestamp} wrapper. + * + * @param audioTrack The audio track that will provide timestamps. + */ + public AudioTimestampV19(AudioTrack audioTrack) { + this.audioTrack = audioTrack; + audioTimestamp = new AudioTimestamp(); + } + + /** + * Attempts to update the audio track timestamp. Returns {@code true} if the timestamp was + * updated, in which case the updated timestamp system time and position can be accessed with + * {@link #getTimestampSystemTimeUs()} and {@link #getTimestampPositionFrames()}. Returns {@code + * false} if no timestamp is available, in which case those methods should not be called. + */ + public boolean maybeUpdateTimestamp() { + boolean updated = audioTrack.getTimestamp(audioTimestamp); + if (updated) { + long rawPositionFrames = audioTimestamp.framePosition; + if (lastTimestampRawPositionFrames > rawPositionFrames) { + // The value must have wrapped around. + rawTimestampFramePositionWrapCount++; + } + lastTimestampRawPositionFrames = rawPositionFrames; + lastTimestampPositionFrames = + rawPositionFrames + (rawTimestampFramePositionWrapCount << 32); + } + return updated; + } + + public long getTimestampSystemTimeUs() { + return audioTimestamp.nanoTime / 1000; + } + + public long getTimestampPositionFrames() { + return lastTimestampPositionFrames; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioTrackPositionTracker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioTrackPositionTracker.java new file mode 100644 index 0000000000..e62e8cf2c5 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AudioTrackPositionTracker.java @@ -0,0 +1,545 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.media.AudioTimestamp; +import android.media.AudioTrack; +import android.os.SystemClock; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.lang.reflect.Method; + +/** + * Wraps an {@link AudioTrack}, exposing a position based on {@link + * AudioTrack#getPlaybackHeadPosition()} and {@link AudioTrack#getTimestamp(AudioTimestamp)}. + * + *

Call {@link #setAudioTrack(AudioTrack, int, int, int)} to set the audio track to wrap. Call + * {@link #mayHandleBuffer(long)} if there is input data to write to the track. If it returns false, + * the audio track position is stabilizing and no data may be written. Call {@link #start()} + * immediately before calling {@link AudioTrack#play()}. Call {@link #pause()} when pausing the + * track. Call {@link #handleEndOfStream(long)} when no more data will be written to the track. When + * the audio track will no longer be used, call {@link #reset()}. + */ +/* package */ final class AudioTrackPositionTracker { + + /** Listener for position tracker events. */ + public interface Listener { + + /** + * Called when the frame position is too far from the expected frame position. + * + * @param audioTimestampPositionFrames The frame position of the last known audio track + * timestamp. + * @param audioTimestampSystemTimeUs The system time associated with the last known audio track + * timestamp, in microseconds. + * @param systemTimeUs The current time. + * @param playbackPositionUs The current playback head position in microseconds. + */ + void onPositionFramesMismatch( + long audioTimestampPositionFrames, + long audioTimestampSystemTimeUs, + long systemTimeUs, + long playbackPositionUs); + + /** + * Called when the system time associated with the last known audio track timestamp is + * unexpectedly far from the current time. + * + * @param audioTimestampPositionFrames The frame position of the last known audio track + * timestamp. + * @param audioTimestampSystemTimeUs The system time associated with the last known audio track + * timestamp, in microseconds. + * @param systemTimeUs The current time. + * @param playbackPositionUs The current playback head position in microseconds. + */ + void onSystemTimeUsMismatch( + long audioTimestampPositionFrames, + long audioTimestampSystemTimeUs, + long systemTimeUs, + long playbackPositionUs); + + /** + * Called when the audio track has provided an invalid latency. + * + * @param latencyUs The reported latency in microseconds. + */ + void onInvalidLatency(long latencyUs); + + /** + * Called when the audio track runs out of data to play. + * + * @param bufferSize The size of the sink's buffer, in bytes. + * @param bufferSizeMs The size of the sink's buffer, in milliseconds, if it is configured for + * PCM output. {@link C#TIME_UNSET} if it is configured for encoded audio output, as the + * buffered media can have a variable bitrate so the duration may be unknown. + */ + void onUnderrun(int bufferSize, long bufferSizeMs); + } + + /** {@link AudioTrack} playback states. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({PLAYSTATE_STOPPED, PLAYSTATE_PAUSED, PLAYSTATE_PLAYING}) + private @interface PlayState {} + /** @see AudioTrack#PLAYSTATE_STOPPED */ + private static final int PLAYSTATE_STOPPED = AudioTrack.PLAYSTATE_STOPPED; + /** @see AudioTrack#PLAYSTATE_PAUSED */ + private static final int PLAYSTATE_PAUSED = AudioTrack.PLAYSTATE_PAUSED; + /** @see AudioTrack#PLAYSTATE_PLAYING */ + private static final int PLAYSTATE_PLAYING = AudioTrack.PLAYSTATE_PLAYING; + + /** + * AudioTrack timestamps are deemed spurious if they are offset from the system clock by more than + * this amount. + * + *

This is a fail safe that should not be required on correctly functioning devices. + */ + private static final long MAX_AUDIO_TIMESTAMP_OFFSET_US = 5 * C.MICROS_PER_SECOND; + + /** + * AudioTrack latencies are deemed impossibly large if they are greater than this amount. + * + *

This is a fail safe that should not be required on correctly functioning devices. + */ + private static final long MAX_LATENCY_US = 5 * C.MICROS_PER_SECOND; + + private static final long FORCE_RESET_WORKAROUND_TIMEOUT_MS = 200; + + private static final int MAX_PLAYHEAD_OFFSET_COUNT = 10; + private static final int MIN_PLAYHEAD_OFFSET_SAMPLE_INTERVAL_US = 30000; + private static final int MIN_LATENCY_SAMPLE_INTERVAL_US = 500000; + + private final Listener listener; + private final long[] playheadOffsets; + + @Nullable private AudioTrack audioTrack; + private int outputPcmFrameSize; + private int bufferSize; + @Nullable private AudioTimestampPoller audioTimestampPoller; + private int outputSampleRate; + private boolean needsPassthroughWorkarounds; + private long bufferSizeUs; + + private long smoothedPlayheadOffsetUs; + private long lastPlayheadSampleTimeUs; + + @Nullable private Method getLatencyMethod; + private long latencyUs; + private boolean hasData; + + private boolean isOutputPcm; + private long lastLatencySampleTimeUs; + private long lastRawPlaybackHeadPosition; + private long rawPlaybackHeadWrapCount; + private long passthroughWorkaroundPauseOffset; + private int nextPlayheadOffsetIndex; + private int playheadOffsetCount; + private long stopTimestampUs; + private long forceResetWorkaroundTimeMs; + private long stopPlaybackHeadPosition; + private long endPlaybackHeadPosition; + + /** + * Creates a new audio track position tracker. + * + * @param listener A listener for position tracking events. + */ + public AudioTrackPositionTracker(Listener listener) { + this.listener = Assertions.checkNotNull(listener); + if (Util.SDK_INT >= 18) { + try { + getLatencyMethod = AudioTrack.class.getMethod("getLatency", (Class[]) null); + } catch (NoSuchMethodException e) { + // There's no guarantee this method exists. Do nothing. + } + } + playheadOffsets = new long[MAX_PLAYHEAD_OFFSET_COUNT]; + } + + /** + * Sets the {@link AudioTrack} to wrap. Subsequent method calls on this instance relate to this + * track's position, until the next call to {@link #reset()}. + * + * @param audioTrack The audio track to wrap. + * @param outputEncoding The encoding of the audio track. + * @param outputPcmFrameSize For PCM output encodings, the frame size. The value is ignored + * otherwise. + * @param bufferSize The audio track buffer size in bytes. + */ + public void setAudioTrack( + AudioTrack audioTrack, + @C.Encoding int outputEncoding, + int outputPcmFrameSize, + int bufferSize) { + this.audioTrack = audioTrack; + this.outputPcmFrameSize = outputPcmFrameSize; + this.bufferSize = bufferSize; + audioTimestampPoller = new AudioTimestampPoller(audioTrack); + outputSampleRate = audioTrack.getSampleRate(); + needsPassthroughWorkarounds = needsPassthroughWorkarounds(outputEncoding); + isOutputPcm = Util.isEncodingLinearPcm(outputEncoding); + bufferSizeUs = isOutputPcm ? framesToDurationUs(bufferSize / outputPcmFrameSize) : C.TIME_UNSET; + lastRawPlaybackHeadPosition = 0; + rawPlaybackHeadWrapCount = 0; + passthroughWorkaroundPauseOffset = 0; + hasData = false; + stopTimestampUs = C.TIME_UNSET; + forceResetWorkaroundTimeMs = C.TIME_UNSET; + latencyUs = 0; + } + + public long getCurrentPositionUs(boolean sourceEnded) { + if (Assertions.checkNotNull(this.audioTrack).getPlayState() == PLAYSTATE_PLAYING) { + maybeSampleSyncParams(); + } + + // If the device supports it, use the playback timestamp from AudioTrack.getTimestamp. + // Otherwise, derive a smoothed position by sampling the track's frame position. + long systemTimeUs = System.nanoTime() / 1000; + AudioTimestampPoller audioTimestampPoller = Assertions.checkNotNull(this.audioTimestampPoller); + if (audioTimestampPoller.hasTimestamp()) { + // Calculate the speed-adjusted position using the timestamp (which may be in the future). + long timestampPositionFrames = audioTimestampPoller.getTimestampPositionFrames(); + long timestampPositionUs = framesToDurationUs(timestampPositionFrames); + if (!audioTimestampPoller.isTimestampAdvancing()) { + return timestampPositionUs; + } + long elapsedSinceTimestampUs = systemTimeUs - audioTimestampPoller.getTimestampSystemTimeUs(); + return timestampPositionUs + elapsedSinceTimestampUs; + } else { + long positionUs; + if (playheadOffsetCount == 0) { + // The AudioTrack has started, but we don't have any samples to compute a smoothed position. + positionUs = getPlaybackHeadPositionUs(); + } else { + // getPlaybackHeadPositionUs() only has a granularity of ~20 ms, so we base the position off + // the system clock (and a smoothed offset between it and the playhead position) so as to + // prevent jitter in the reported positions. + positionUs = systemTimeUs + smoothedPlayheadOffsetUs; + } + if (!sourceEnded) { + positionUs -= latencyUs; + } + return positionUs; + } + } + + /** Starts position tracking. Must be called immediately before {@link AudioTrack#play()}. */ + public void start() { + Assertions.checkNotNull(audioTimestampPoller).reset(); + } + + /** Returns whether the audio track is in the playing state. */ + public boolean isPlaying() { + return Assertions.checkNotNull(audioTrack).getPlayState() == PLAYSTATE_PLAYING; + } + + /** + * Checks the state of the audio track and returns whether the caller can write data to the track. + * Notifies {@link Listener#onUnderrun(int, long)} if the track has underrun. + * + * @param writtenFrames The number of frames that have been written. + * @return Whether the caller can write data to the track. + */ + public boolean mayHandleBuffer(long writtenFrames) { + @PlayState int playState = Assertions.checkNotNull(audioTrack).getPlayState(); + if (needsPassthroughWorkarounds) { + // An AC-3 audio track continues to play data written while it is paused. Stop writing so its + // buffer empties. See [Internal: b/18899620]. + if (playState == PLAYSTATE_PAUSED) { + // We force an underrun to pause the track, so don't notify the listener in this case. + hasData = false; + return false; + } + + // A new AC-3 audio track's playback position continues to increase from the old track's + // position for a short time after is has been released. Avoid writing data until the playback + // head position actually returns to zero. + if (playState == PLAYSTATE_STOPPED && getPlaybackHeadPosition() == 0) { + return false; + } + } + + boolean hadData = hasData; + hasData = hasPendingData(writtenFrames); + if (hadData && !hasData && playState != PLAYSTATE_STOPPED && listener != null) { + listener.onUnderrun(bufferSize, C.usToMs(bufferSizeUs)); + } + + return true; + } + + /** + * Returns an estimate of the number of additional bytes that can be written to the audio track's + * buffer without running out of space. + * + *

May only be called if the output encoding is one of the PCM encodings. + * + * @param writtenBytes The number of bytes written to the audio track so far. + * @return An estimate of the number of bytes that can be written. + */ + public int getAvailableBufferSize(long writtenBytes) { + int bytesPending = (int) (writtenBytes - (getPlaybackHeadPosition() * outputPcmFrameSize)); + return bufferSize - bytesPending; + } + + /** Returns whether the track is in an invalid state and must be recreated. */ + public boolean isStalled(long writtenFrames) { + return forceResetWorkaroundTimeMs != C.TIME_UNSET + && writtenFrames > 0 + && SystemClock.elapsedRealtime() - forceResetWorkaroundTimeMs + >= FORCE_RESET_WORKAROUND_TIMEOUT_MS; + } + + /** + * Records the writing position at which the stream ended, so that the reported position can + * continue to increment while remaining data is played out. + * + * @param writtenFrames The number of frames that have been written. + */ + public void handleEndOfStream(long writtenFrames) { + stopPlaybackHeadPosition = getPlaybackHeadPosition(); + stopTimestampUs = SystemClock.elapsedRealtime() * 1000; + endPlaybackHeadPosition = writtenFrames; + } + + /** + * Returns whether the audio track has any pending data to play out at its current position. + * + * @param writtenFrames The number of frames written to the audio track. + * @return Whether the audio track has any pending data to play out. + */ + public boolean hasPendingData(long writtenFrames) { + return writtenFrames > getPlaybackHeadPosition() + || forceHasPendingData(); + } + + /** + * Pauses the audio track position tracker, returning whether the audio track needs to be paused + * to cause playback to pause. If {@code false} is returned the audio track will pause without + * further interaction, as the end of stream has been handled. + */ + public boolean pause() { + resetSyncParams(); + if (stopTimestampUs == C.TIME_UNSET) { + // The audio track is going to be paused, so reset the timestamp poller to ensure it doesn't + // supply an advancing position. + Assertions.checkNotNull(audioTimestampPoller).reset(); + return true; + } + // We've handled the end of the stream already, so there's no need to pause the track. + return false; + } + + /** + * Resets the position tracker. Should be called when the audio track previous passed to {@link + * #setAudioTrack(AudioTrack, int, int, int)} is no longer in use. + */ + public void reset() { + resetSyncParams(); + audioTrack = null; + audioTimestampPoller = null; + } + + private void maybeSampleSyncParams() { + long playbackPositionUs = getPlaybackHeadPositionUs(); + if (playbackPositionUs == 0) { + // The AudioTrack hasn't output anything yet. + return; + } + long systemTimeUs = System.nanoTime() / 1000; + if (systemTimeUs - lastPlayheadSampleTimeUs >= MIN_PLAYHEAD_OFFSET_SAMPLE_INTERVAL_US) { + // Take a new sample and update the smoothed offset between the system clock and the playhead. + playheadOffsets[nextPlayheadOffsetIndex] = playbackPositionUs - systemTimeUs; + nextPlayheadOffsetIndex = (nextPlayheadOffsetIndex + 1) % MAX_PLAYHEAD_OFFSET_COUNT; + if (playheadOffsetCount < MAX_PLAYHEAD_OFFSET_COUNT) { + playheadOffsetCount++; + } + lastPlayheadSampleTimeUs = systemTimeUs; + smoothedPlayheadOffsetUs = 0; + for (int i = 0; i < playheadOffsetCount; i++) { + smoothedPlayheadOffsetUs += playheadOffsets[i] / playheadOffsetCount; + } + } + + if (needsPassthroughWorkarounds) { + // Don't sample the timestamp and latency if this is an AC-3 passthrough AudioTrack on + // platform API versions 21/22, as incorrect values are returned. See [Internal: b/21145353]. + return; + } + + maybePollAndCheckTimestamp(systemTimeUs, playbackPositionUs); + maybeUpdateLatency(systemTimeUs); + } + + private void maybePollAndCheckTimestamp(long systemTimeUs, long playbackPositionUs) { + AudioTimestampPoller audioTimestampPoller = Assertions.checkNotNull(this.audioTimestampPoller); + if (!audioTimestampPoller.maybePollTimestamp(systemTimeUs)) { + return; + } + + // Perform sanity checks on the timestamp and accept/reject it. + long audioTimestampSystemTimeUs = audioTimestampPoller.getTimestampSystemTimeUs(); + long audioTimestampPositionFrames = audioTimestampPoller.getTimestampPositionFrames(); + if (Math.abs(audioTimestampSystemTimeUs - systemTimeUs) > MAX_AUDIO_TIMESTAMP_OFFSET_US) { + listener.onSystemTimeUsMismatch( + audioTimestampPositionFrames, + audioTimestampSystemTimeUs, + systemTimeUs, + playbackPositionUs); + audioTimestampPoller.rejectTimestamp(); + } else if (Math.abs(framesToDurationUs(audioTimestampPositionFrames) - playbackPositionUs) + > MAX_AUDIO_TIMESTAMP_OFFSET_US) { + listener.onPositionFramesMismatch( + audioTimestampPositionFrames, + audioTimestampSystemTimeUs, + systemTimeUs, + playbackPositionUs); + audioTimestampPoller.rejectTimestamp(); + } else { + audioTimestampPoller.acceptTimestamp(); + } + } + + private void maybeUpdateLatency(long systemTimeUs) { + if (isOutputPcm + && getLatencyMethod != null + && systemTimeUs - lastLatencySampleTimeUs >= MIN_LATENCY_SAMPLE_INTERVAL_US) { + try { + // Compute the audio track latency, excluding the latency due to the buffer (leaving + // latency due to the mixer and audio hardware driver). + latencyUs = + castNonNull((Integer) getLatencyMethod.invoke(Assertions.checkNotNull(audioTrack))) + * 1000L + - bufferSizeUs; + // Sanity check that the latency is non-negative. + latencyUs = Math.max(latencyUs, 0); + // Sanity check that the latency isn't too large. + if (latencyUs > MAX_LATENCY_US) { + listener.onInvalidLatency(latencyUs); + latencyUs = 0; + } + } catch (Exception e) { + // The method existed, but doesn't work. Don't try again. + getLatencyMethod = null; + } + lastLatencySampleTimeUs = systemTimeUs; + } + } + + private long framesToDurationUs(long frameCount) { + return (frameCount * C.MICROS_PER_SECOND) / outputSampleRate; + } + + private void resetSyncParams() { + smoothedPlayheadOffsetUs = 0; + playheadOffsetCount = 0; + nextPlayheadOffsetIndex = 0; + lastPlayheadSampleTimeUs = 0; + } + + /** + * If passthrough workarounds are enabled, pausing is implemented by forcing the AudioTrack to + * underrun. In this case, still behave as if we have pending data, otherwise writing won't + * resume. + */ + private boolean forceHasPendingData() { + return needsPassthroughWorkarounds + && Assertions.checkNotNull(audioTrack).getPlayState() == AudioTrack.PLAYSTATE_PAUSED + && getPlaybackHeadPosition() == 0; + } + + /** + * Returns whether to work around problems with passthrough audio tracks. See [Internal: + * b/18899620, b/19187573, b/21145353]. + */ + private static boolean needsPassthroughWorkarounds(@C.Encoding int outputEncoding) { + return Util.SDK_INT < 23 + && (outputEncoding == C.ENCODING_AC3 || outputEncoding == C.ENCODING_E_AC3); + } + + private long getPlaybackHeadPositionUs() { + return framesToDurationUs(getPlaybackHeadPosition()); + } + + /** + * {@link AudioTrack#getPlaybackHeadPosition()} returns a value intended to be interpreted as an + * unsigned 32 bit integer, which also wraps around periodically. This method returns the playback + * head position as a long that will only wrap around if the value exceeds {@link Long#MAX_VALUE} + * (which in practice will never happen). + * + * @return The playback head position, in frames. + */ + private long getPlaybackHeadPosition() { + AudioTrack audioTrack = Assertions.checkNotNull(this.audioTrack); + if (stopTimestampUs != C.TIME_UNSET) { + // Simulate the playback head position up to the total number of frames submitted. + long elapsedTimeSinceStopUs = (SystemClock.elapsedRealtime() * 1000) - stopTimestampUs; + long framesSinceStop = (elapsedTimeSinceStopUs * outputSampleRate) / C.MICROS_PER_SECOND; + return Math.min(endPlaybackHeadPosition, stopPlaybackHeadPosition + framesSinceStop); + } + + int state = audioTrack.getPlayState(); + if (state == PLAYSTATE_STOPPED) { + // The audio track hasn't been started. + return 0; + } + + long rawPlaybackHeadPosition = 0xFFFFFFFFL & audioTrack.getPlaybackHeadPosition(); + if (needsPassthroughWorkarounds) { + // Work around an issue with passthrough/direct AudioTracks on platform API versions 21/22 + // where the playback head position jumps back to zero on paused passthrough/direct audio + // tracks. See [Internal: b/19187573]. + if (state == PLAYSTATE_PAUSED && rawPlaybackHeadPosition == 0) { + passthroughWorkaroundPauseOffset = lastRawPlaybackHeadPosition; + } + rawPlaybackHeadPosition += passthroughWorkaroundPauseOffset; + } + + if (Util.SDK_INT <= 29) { + if (rawPlaybackHeadPosition == 0 + && lastRawPlaybackHeadPosition > 0 + && state == PLAYSTATE_PLAYING) { + // If connecting a Bluetooth audio device fails, the AudioTrack may be left in a state + // where its Java API is in the playing state, but the native track is stopped. When this + // happens the playback head position gets stuck at zero. In this case, return the old + // playback head position and force the track to be reset after + // {@link #FORCE_RESET_WORKAROUND_TIMEOUT_MS} has elapsed. + if (forceResetWorkaroundTimeMs == C.TIME_UNSET) { + forceResetWorkaroundTimeMs = SystemClock.elapsedRealtime(); + } + return lastRawPlaybackHeadPosition; + } else { + forceResetWorkaroundTimeMs = C.TIME_UNSET; + } + } + + if (lastRawPlaybackHeadPosition > rawPlaybackHeadPosition) { + // The value must have wrapped around. + rawPlaybackHeadWrapCount++; + } + lastRawPlaybackHeadPosition = rawPlaybackHeadPosition; + return rawPlaybackHeadPosition + (rawPlaybackHeadWrapCount << 32); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AuxEffectInfo.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AuxEffectInfo.java new file mode 100644 index 0000000000..6039a8c1a8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/AuxEffectInfo.java @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import android.media.AudioTrack; +import android.media.audiofx.AudioEffect; +import androidx.annotation.Nullable; + +/** + * Represents auxiliary effect information, which can be used to attach an auxiliary effect to an + * underlying {@link AudioTrack}. + * + *

Auxiliary effects can only be applied if the application has the {@code + * android.permission.MODIFY_AUDIO_SETTINGS} permission. Apps are responsible for retaining the + * associated audio effect instance and releasing it when it's no longer needed. See the + * documentation of {@link AudioEffect} for more information. + */ +public final class AuxEffectInfo { + + /** Value for {@link #effectId} representing no auxiliary effect. */ + public static final int NO_AUX_EFFECT_ID = 0; + + /** + * The identifier of the effect, or {@link #NO_AUX_EFFECT_ID} if there is no effect. + * + * @see android.media.AudioTrack#attachAuxEffect(int) + */ + public final int effectId; + /** + * The send level for the effect. + * + * @see android.media.AudioTrack#setAuxEffectSendLevel(float) + */ + public final float sendLevel; + + /** + * Creates an instance with the given effect identifier and send level. + * + * @param effectId The effect identifier. This is the value returned by {@link + * AudioEffect#getId()} on the effect, or {@value NO_AUX_EFFECT_ID} which represents no + * effect. This value is passed to {@link AudioTrack#attachAuxEffect(int)} on the underlying + * audio track. + * @param sendLevel The send level for the effect, where 0 represents no effect and a value of 1 + * is full send. If {@code effectId} is not {@value #NO_AUX_EFFECT_ID}, this value is passed + * to {@link AudioTrack#setAuxEffectSendLevel(float)} on the underlying audio track. + */ + public AuxEffectInfo(int effectId, float sendLevel) { + this.effectId = effectId; + this.sendLevel = sendLevel; + } + + @Override + public boolean equals(@Nullable Object o) { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + AuxEffectInfo auxEffectInfo = (AuxEffectInfo) o; + return effectId == auxEffectInfo.effectId + && Float.compare(auxEffectInfo.sendLevel, sendLevel) == 0; + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + effectId; + result = 31 * result + Float.floatToIntBits(sendLevel); + return result; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/BaseAudioProcessor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/BaseAudioProcessor.java new file mode 100644 index 0000000000..189d8f0265 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/BaseAudioProcessor.java @@ -0,0 +1,143 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import androidx.annotation.CallSuper; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; + +/** + * Base class for audio processors that keep an output buffer and an internal buffer that is reused + * whenever input is queued. Subclasses should override {@link #onConfigure(AudioFormat)} to return + * the output audio format for the processor if it's active. + */ +public abstract class BaseAudioProcessor implements AudioProcessor { + + /** The current input audio format. */ + protected AudioFormat inputAudioFormat; + /** The current output audio format. */ + protected AudioFormat outputAudioFormat; + + private AudioFormat pendingInputAudioFormat; + private AudioFormat pendingOutputAudioFormat; + private ByteBuffer buffer; + private ByteBuffer outputBuffer; + private boolean inputEnded; + + public BaseAudioProcessor() { + buffer = EMPTY_BUFFER; + outputBuffer = EMPTY_BUFFER; + pendingInputAudioFormat = AudioFormat.NOT_SET; + pendingOutputAudioFormat = AudioFormat.NOT_SET; + inputAudioFormat = AudioFormat.NOT_SET; + outputAudioFormat = AudioFormat.NOT_SET; + } + + @Override + public final AudioFormat configure(AudioFormat inputAudioFormat) + throws UnhandledAudioFormatException { + pendingInputAudioFormat = inputAudioFormat; + pendingOutputAudioFormat = onConfigure(inputAudioFormat); + return isActive() ? pendingOutputAudioFormat : AudioFormat.NOT_SET; + } + + @Override + public boolean isActive() { + return pendingOutputAudioFormat != AudioFormat.NOT_SET; + } + + @Override + public final void queueEndOfStream() { + inputEnded = true; + onQueueEndOfStream(); + } + + @CallSuper + @Override + public ByteBuffer getOutput() { + ByteBuffer outputBuffer = this.outputBuffer; + this.outputBuffer = EMPTY_BUFFER; + return outputBuffer; + } + + @CallSuper + @SuppressWarnings("ReferenceEquality") + @Override + public boolean isEnded() { + return inputEnded && outputBuffer == EMPTY_BUFFER; + } + + @Override + public final void flush() { + outputBuffer = EMPTY_BUFFER; + inputEnded = false; + inputAudioFormat = pendingInputAudioFormat; + outputAudioFormat = pendingOutputAudioFormat; + onFlush(); + } + + @Override + public final void reset() { + flush(); + buffer = EMPTY_BUFFER; + pendingInputAudioFormat = AudioFormat.NOT_SET; + pendingOutputAudioFormat = AudioFormat.NOT_SET; + inputAudioFormat = AudioFormat.NOT_SET; + outputAudioFormat = AudioFormat.NOT_SET; + onReset(); + } + + /** + * Replaces the current output buffer with a buffer of at least {@code count} bytes and returns + * it. Callers should write to the returned buffer then {@link ByteBuffer#flip()} it so it can be + * read via {@link #getOutput()}. + */ + protected final ByteBuffer replaceOutputBuffer(int count) { + if (buffer.capacity() < count) { + buffer = ByteBuffer.allocateDirect(count).order(ByteOrder.nativeOrder()); + } else { + buffer.clear(); + } + outputBuffer = buffer; + return buffer; + } + + /** Returns whether the current output buffer has any data remaining. */ + protected final boolean hasPendingOutput() { + return outputBuffer.hasRemaining(); + } + + /** Called when the processor is configured for a new input format. */ + protected AudioFormat onConfigure(AudioFormat inputAudioFormat) + throws UnhandledAudioFormatException { + return AudioFormat.NOT_SET; + } + + /** Called when the end-of-stream is queued to the processor. */ + protected void onQueueEndOfStream() { + // Do nothing. + } + + /** Called when the processor is flushed, directly or as part of resetting. */ + protected void onFlush() { + // Do nothing. + } + + /** Called when the processor is reset. */ + protected void onReset() { + // Do nothing. + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ChannelMappingAudioProcessor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ChannelMappingAudioProcessor.java new file mode 100644 index 0000000000..e8496d4608 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ChannelMappingAudioProcessor.java @@ -0,0 +1,99 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.nio.ByteBuffer; + +/** + * An {@link AudioProcessor} that applies a mapping from input channels onto specified output + * channels. This can be used to reorder, duplicate or discard channels. + */ +@SuppressWarnings("nullness:initialization.fields.uninitialized") +/* package */ final class ChannelMappingAudioProcessor extends BaseAudioProcessor { + + @Nullable private int[] pendingOutputChannels; + @Nullable private int[] outputChannels; + + /** + * Resets the channel mapping. After calling this method, call {@link #configure(AudioFormat)} to + * start using the new channel map. + * + * @param outputChannels The mapping from input to output channel indices, or {@code null} to + * leave the input unchanged. + * @see AudioSink#configure(int, int, int, int, int[], int, int) + */ + public void setChannelMap(@Nullable int[] outputChannels) { + pendingOutputChannels = outputChannels; + } + + @Override + public AudioFormat onConfigure(AudioFormat inputAudioFormat) + throws UnhandledAudioFormatException { + @Nullable int[] outputChannels = pendingOutputChannels; + if (outputChannels == null) { + return AudioFormat.NOT_SET; + } + + if (inputAudioFormat.encoding != C.ENCODING_PCM_16BIT) { + throw new UnhandledAudioFormatException(inputAudioFormat); + } + + boolean active = inputAudioFormat.channelCount != outputChannels.length; + for (int i = 0; i < outputChannels.length; i++) { + int channelIndex = outputChannels[i]; + if (channelIndex >= inputAudioFormat.channelCount) { + throw new UnhandledAudioFormatException(inputAudioFormat); + } + active |= (channelIndex != i); + } + return active + ? new AudioFormat(inputAudioFormat.sampleRate, outputChannels.length, C.ENCODING_PCM_16BIT) + : AudioFormat.NOT_SET; + } + + @Override + public void queueInput(ByteBuffer inputBuffer) { + int[] outputChannels = Assertions.checkNotNull(this.outputChannels); + int position = inputBuffer.position(); + int limit = inputBuffer.limit(); + int frameCount = (limit - position) / inputAudioFormat.bytesPerFrame; + int outputSize = frameCount * outputAudioFormat.bytesPerFrame; + ByteBuffer buffer = replaceOutputBuffer(outputSize); + while (position < limit) { + for (int channelIndex : outputChannels) { + buffer.putShort(inputBuffer.getShort(position + 2 * channelIndex)); + } + position += inputAudioFormat.bytesPerFrame; + } + inputBuffer.position(limit); + buffer.flip(); + } + + @Override + protected void onFlush() { + outputChannels = pendingOutputChannels; + } + + @Override + protected void onReset() { + outputChannels = null; + pendingOutputChannels = null; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/DefaultAudioSink.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/DefaultAudioSink.java new file mode 100644 index 0000000000..9fc3fbbfd8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/DefaultAudioSink.java @@ -0,0 +1,1474 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import android.annotation.SuppressLint; +import android.annotation.TargetApi; +import android.media.AudioFormat; +import android.media.AudioManager; +import android.media.AudioTrack; +import android.os.ConditionVariable; +import android.os.SystemClock; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioProcessor.UnhandledAudioFormatException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.MpegAudioHeader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.util.ArrayDeque; +import java.util.ArrayList; +import java.util.Collections; + +/** + * Plays audio data. The implementation delegates to an {@link AudioTrack} and handles playback + * position smoothing, non-blocking writes and reconfiguration. + *

+ * If tunneling mode is enabled, care must be taken that audio processors do not output buffers with + * a different duration than their input, and buffer processors must produce output corresponding to + * their last input immediately after that input is queued. This means that, for example, speed + * adjustment is not possible while using tunneling. + */ +public final class DefaultAudioSink implements AudioSink { + + /** + * Thrown when the audio track has provided a spurious timestamp, if {@link + * #failOnSpuriousAudioTimestamp} is set. + */ + public static final class InvalidAudioTrackTimestampException extends RuntimeException { + + /** + * Creates a new invalid timestamp exception with the specified message. + * + * @param message The detail message for this exception. + */ + private InvalidAudioTrackTimestampException(String message) { + super(message); + } + + } + + /** + * Provides a chain of audio processors, which are used for any user-defined processing and + * applying playback parameters (if supported). Because applying playback parameters can skip and + * stretch/compress audio, the sink will query the chain for information on how to transform its + * output position to map it onto a media position, via {@link #getMediaDuration(long)} and {@link + * #getSkippedOutputFrameCount()}. + */ + public interface AudioProcessorChain { + + /** + * Returns the fixed chain of audio processors that will process audio. This method is called + * once during initialization, but audio processors may change state to become active/inactive + * during playback. + */ + AudioProcessor[] getAudioProcessors(); + + /** + * Configures audio processors to apply the specified playback parameters immediately, returning + * the new parameters, which may differ from those passed in. Only called when processors have + * no input pending. + * + * @param playbackParameters The playback parameters to try to apply. + * @return The playback parameters that were actually applied. + */ + PlaybackParameters applyPlaybackParameters(PlaybackParameters playbackParameters); + + /** + * Scales the specified playout duration to take into account speedup due to audio processing, + * returning an input media duration, in arbitrary units. + */ + long getMediaDuration(long playoutDuration); + + /** + * Returns the number of output audio frames skipped since the audio processors were last + * flushed. + */ + long getSkippedOutputFrameCount(); + } + + /** + * The default audio processor chain, which applies a (possibly empty) chain of user-defined audio + * processors followed by {@link SilenceSkippingAudioProcessor} and {@link SonicAudioProcessor}. + */ + public static class DefaultAudioProcessorChain implements AudioProcessorChain { + + private final AudioProcessor[] audioProcessors; + private final SilenceSkippingAudioProcessor silenceSkippingAudioProcessor; + private final SonicAudioProcessor sonicAudioProcessor; + + /** + * Creates a new default chain of audio processors, with the user-defined {@code + * audioProcessors} applied before silence skipping and playback parameters. + */ + public DefaultAudioProcessorChain(AudioProcessor... audioProcessors) { + // The passed-in type may be more specialized than AudioProcessor[], so allocate a new array + // rather than using Arrays.copyOf. + this.audioProcessors = new AudioProcessor[audioProcessors.length + 2]; + System.arraycopy( + /* src= */ audioProcessors, + /* srcPos= */ 0, + /* dest= */ this.audioProcessors, + /* destPos= */ 0, + /* length= */ audioProcessors.length); + silenceSkippingAudioProcessor = new SilenceSkippingAudioProcessor(); + sonicAudioProcessor = new SonicAudioProcessor(); + this.audioProcessors[audioProcessors.length] = silenceSkippingAudioProcessor; + this.audioProcessors[audioProcessors.length + 1] = sonicAudioProcessor; + } + + @Override + public AudioProcessor[] getAudioProcessors() { + return audioProcessors; + } + + @Override + public PlaybackParameters applyPlaybackParameters(PlaybackParameters playbackParameters) { + silenceSkippingAudioProcessor.setEnabled(playbackParameters.skipSilence); + return new PlaybackParameters( + sonicAudioProcessor.setSpeed(playbackParameters.speed), + sonicAudioProcessor.setPitch(playbackParameters.pitch), + playbackParameters.skipSilence); + } + + @Override + public long getMediaDuration(long playoutDuration) { + return sonicAudioProcessor.scaleDurationForSpeedup(playoutDuration); + } + + @Override + public long getSkippedOutputFrameCount() { + return silenceSkippingAudioProcessor.getSkippedFrames(); + } + } + + /** + * A minimum length for the {@link AudioTrack} buffer, in microseconds. + */ + private static final long MIN_BUFFER_DURATION_US = 250000; + /** + * A maximum length for the {@link AudioTrack} buffer, in microseconds. + */ + private static final long MAX_BUFFER_DURATION_US = 750000; + /** + * The length for passthrough {@link AudioTrack} buffers, in microseconds. + */ + private static final long PASSTHROUGH_BUFFER_DURATION_US = 250000; + /** + * A multiplication factor to apply to the minimum buffer size requested by the underlying + * {@link AudioTrack}. + */ + private static final int BUFFER_MULTIPLICATION_FACTOR = 4; + + /** To avoid underruns on some devices (e.g., Broadcom 7271), scale up the AC3 buffer duration. */ + private static final int AC3_BUFFER_MULTIPLICATION_FACTOR = 2; + + /** + * @see AudioTrack#ERROR_BAD_VALUE + */ + private static final int ERROR_BAD_VALUE = AudioTrack.ERROR_BAD_VALUE; + /** + * @see AudioTrack#MODE_STATIC + */ + private static final int MODE_STATIC = AudioTrack.MODE_STATIC; + /** + * @see AudioTrack#MODE_STREAM + */ + private static final int MODE_STREAM = AudioTrack.MODE_STREAM; + /** + * @see AudioTrack#STATE_INITIALIZED + */ + private static final int STATE_INITIALIZED = AudioTrack.STATE_INITIALIZED; + /** + * @see AudioTrack#WRITE_NON_BLOCKING + */ + @SuppressLint("InlinedApi") + private static final int WRITE_NON_BLOCKING = AudioTrack.WRITE_NON_BLOCKING; + + private static final String TAG = "AudioTrack"; + + /** Represents states of the {@link #startMediaTimeUs} value. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({START_NOT_SET, START_IN_SYNC, START_NEED_SYNC}) + private @interface StartMediaTimeState {} + + private static final int START_NOT_SET = 0; + private static final int START_IN_SYNC = 1; + private static final int START_NEED_SYNC = 2; + + /** + * Whether to enable a workaround for an issue where an audio effect does not keep its session + * active across releasing/initializing a new audio track, on platform builds where + * {@link Util#SDK_INT} < 21. + *

+ * The flag must be set before creating a player. + */ + public static boolean enablePreV21AudioSessionWorkaround = false; + + /** + * Whether to throw an {@link InvalidAudioTrackTimestampException} when a spurious timestamp is + * reported from {@link AudioTrack#getTimestamp}. + *

+ * The flag must be set before creating a player. Should be set to {@code true} for testing and + * debugging purposes only. + */ + public static boolean failOnSpuriousAudioTimestamp = false; + + @Nullable private final AudioCapabilities audioCapabilities; + private final AudioProcessorChain audioProcessorChain; + private final boolean enableFloatOutput; + private final ChannelMappingAudioProcessor channelMappingAudioProcessor; + private final TrimmingAudioProcessor trimmingAudioProcessor; + private final AudioProcessor[] toIntPcmAvailableAudioProcessors; + private final AudioProcessor[] toFloatPcmAvailableAudioProcessors; + private final ConditionVariable releasingConditionVariable; + private final AudioTrackPositionTracker audioTrackPositionTracker; + private final ArrayDeque playbackParametersCheckpoints; + + @Nullable private Listener listener; + /** Used to keep the audio session active on pre-V21 builds (see {@link #initialize(long)}). */ + @Nullable private AudioTrack keepSessionIdAudioTrack; + + @Nullable private Configuration pendingConfiguration; + private Configuration configuration; + private AudioTrack audioTrack; + + private AudioAttributes audioAttributes; + @Nullable private PlaybackParameters afterDrainPlaybackParameters; + private PlaybackParameters playbackParameters; + private long playbackParametersOffsetUs; + private long playbackParametersPositionUs; + + @Nullable private ByteBuffer avSyncHeader; + private int bytesUntilNextAvSync; + + private long submittedPcmBytes; + private long submittedEncodedFrames; + private long writtenPcmBytes; + private long writtenEncodedFrames; + private int framesPerEncodedSample; + private @StartMediaTimeState int startMediaTimeState; + private long startMediaTimeUs; + private float volume; + + private AudioProcessor[] activeAudioProcessors; + private ByteBuffer[] outputBuffers; + @Nullable private ByteBuffer inputBuffer; + @Nullable private ByteBuffer outputBuffer; + private byte[] preV21OutputBuffer; + private int preV21OutputBufferOffset; + private int drainingAudioProcessorIndex; + private boolean handledEndOfStream; + private boolean stoppedAudioTrack; + + private boolean playing; + private int audioSessionId; + private AuxEffectInfo auxEffectInfo; + private boolean tunneling; + private long lastFeedElapsedRealtimeMs; + + /** + * Creates a new default audio sink. + * + * @param audioCapabilities The audio capabilities for playback on this device. May be null if the + * default capabilities (no encoded audio passthrough support) should be assumed. + * @param audioProcessors An array of {@link AudioProcessor}s that will process PCM audio before + * output. May be empty. + */ + public DefaultAudioSink( + @Nullable AudioCapabilities audioCapabilities, AudioProcessor[] audioProcessors) { + this(audioCapabilities, audioProcessors, /* enableFloatOutput= */ false); + } + + /** + * Creates a new default audio sink, optionally using float output for high resolution PCM. + * + * @param audioCapabilities The audio capabilities for playback on this device. May be null if the + * default capabilities (no encoded audio passthrough support) should be assumed. + * @param audioProcessors An array of {@link AudioProcessor}s that will process PCM audio before + * output. May be empty. + * @param enableFloatOutput Whether to enable 32-bit float output. Where possible, 32-bit float + * output will be used if the input is 32-bit float, and also if the input is high resolution + * (24-bit or 32-bit) integer PCM. Audio processing (for example, speed adjustment) will not + * be available when float output is in use. + */ + public DefaultAudioSink( + @Nullable AudioCapabilities audioCapabilities, + AudioProcessor[] audioProcessors, + boolean enableFloatOutput) { + this(audioCapabilities, new DefaultAudioProcessorChain(audioProcessors), enableFloatOutput); + } + + /** + * Creates a new default audio sink, optionally using float output for high resolution PCM and + * with the specified {@code audioProcessorChain}. + * + * @param audioCapabilities The audio capabilities for playback on this device. May be null if the + * default capabilities (no encoded audio passthrough support) should be assumed. + * @param audioProcessorChain An {@link AudioProcessorChain} which is used to apply playback + * parameters adjustments. The instance passed in must not be reused in other sinks. + * @param enableFloatOutput Whether to enable 32-bit float output. Where possible, 32-bit float + * output will be used if the input is 32-bit float, and also if the input is high resolution + * (24-bit or 32-bit) integer PCM. Audio processing (for example, speed adjustment) will not + * be available when float output is in use. + */ + public DefaultAudioSink( + @Nullable AudioCapabilities audioCapabilities, + AudioProcessorChain audioProcessorChain, + boolean enableFloatOutput) { + this.audioCapabilities = audioCapabilities; + this.audioProcessorChain = Assertions.checkNotNull(audioProcessorChain); + this.enableFloatOutput = enableFloatOutput; + releasingConditionVariable = new ConditionVariable(true); + audioTrackPositionTracker = new AudioTrackPositionTracker(new PositionTrackerListener()); + channelMappingAudioProcessor = new ChannelMappingAudioProcessor(); + trimmingAudioProcessor = new TrimmingAudioProcessor(); + ArrayList toIntPcmAudioProcessors = new ArrayList<>(); + Collections.addAll( + toIntPcmAudioProcessors, + new ResamplingAudioProcessor(), + channelMappingAudioProcessor, + trimmingAudioProcessor); + Collections.addAll(toIntPcmAudioProcessors, audioProcessorChain.getAudioProcessors()); + toIntPcmAvailableAudioProcessors = toIntPcmAudioProcessors.toArray(new AudioProcessor[0]); + toFloatPcmAvailableAudioProcessors = new AudioProcessor[] {new FloatResamplingAudioProcessor()}; + volume = 1.0f; + startMediaTimeState = START_NOT_SET; + audioAttributes = AudioAttributes.DEFAULT; + audioSessionId = C.AUDIO_SESSION_ID_UNSET; + auxEffectInfo = new AuxEffectInfo(AuxEffectInfo.NO_AUX_EFFECT_ID, 0f); + playbackParameters = PlaybackParameters.DEFAULT; + drainingAudioProcessorIndex = C.INDEX_UNSET; + activeAudioProcessors = new AudioProcessor[0]; + outputBuffers = new ByteBuffer[0]; + playbackParametersCheckpoints = new ArrayDeque<>(); + } + + // AudioSink implementation. + + @Override + public void setListener(Listener listener) { + this.listener = listener; + } + + @Override + public boolean supportsOutput(int channelCount, @C.Encoding int encoding) { + if (Util.isEncodingLinearPcm(encoding)) { + // AudioTrack supports 16-bit integer PCM output in all platform API versions, and float + // output from platform API version 21 only. Other integer PCM encodings are resampled by this + // sink to 16-bit PCM. We assume that the audio framework will downsample any number of + // channels to the output device's required number of channels. + return encoding != C.ENCODING_PCM_FLOAT || Util.SDK_INT >= 21; + } else { + return audioCapabilities != null + && audioCapabilities.supportsEncoding(encoding) + && (channelCount == Format.NO_VALUE + || channelCount <= audioCapabilities.getMaxChannelCount()); + } + } + + @Override + public long getCurrentPositionUs(boolean sourceEnded) { + if (!isInitialized() || startMediaTimeState == START_NOT_SET) { + return CURRENT_POSITION_NOT_SET; + } + long positionUs = audioTrackPositionTracker.getCurrentPositionUs(sourceEnded); + positionUs = Math.min(positionUs, configuration.framesToDurationUs(getWrittenFrames())); + return startMediaTimeUs + applySkipping(applySpeedup(positionUs)); + } + + @Override + public void configure( + @C.Encoding int inputEncoding, + int inputChannelCount, + int inputSampleRate, + int specifiedBufferSize, + @Nullable int[] outputChannels, + int trimStartFrames, + int trimEndFrames) + throws ConfigurationException { + if (Util.SDK_INT < 21 && inputChannelCount == 8 && outputChannels == null) { + // AudioTrack doesn't support 8 channel output before Android L. Discard the last two (side) + // channels to give a 6 channel stream that is supported. + outputChannels = new int[6]; + for (int i = 0; i < outputChannels.length; i++) { + outputChannels[i] = i; + } + } + + boolean isInputPcm = Util.isEncodingLinearPcm(inputEncoding); + boolean processingEnabled = isInputPcm; + int sampleRate = inputSampleRate; + int channelCount = inputChannelCount; + @C.Encoding int encoding = inputEncoding; + boolean useFloatOutput = + enableFloatOutput + && supportsOutput(inputChannelCount, C.ENCODING_PCM_FLOAT) + && Util.isEncodingHighResolutionPcm(inputEncoding); + AudioProcessor[] availableAudioProcessors = + useFloatOutput ? toFloatPcmAvailableAudioProcessors : toIntPcmAvailableAudioProcessors; + if (processingEnabled) { + trimmingAudioProcessor.setTrimFrameCount(trimStartFrames, trimEndFrames); + channelMappingAudioProcessor.setChannelMap(outputChannels); + AudioProcessor.AudioFormat outputFormat = + new AudioProcessor.AudioFormat(sampleRate, channelCount, encoding); + for (AudioProcessor audioProcessor : availableAudioProcessors) { + try { + AudioProcessor.AudioFormat nextFormat = audioProcessor.configure(outputFormat); + if (audioProcessor.isActive()) { + outputFormat = nextFormat; + } + } catch (UnhandledAudioFormatException e) { + throw new ConfigurationException(e); + } + } + sampleRate = outputFormat.sampleRate; + channelCount = outputFormat.channelCount; + encoding = outputFormat.encoding; + } + + int outputChannelConfig = getChannelConfig(channelCount, isInputPcm); + if (outputChannelConfig == AudioFormat.CHANNEL_INVALID) { + throw new ConfigurationException("Unsupported channel count: " + channelCount); + } + + int inputPcmFrameSize = + isInputPcm ? Util.getPcmFrameSize(inputEncoding, inputChannelCount) : C.LENGTH_UNSET; + int outputPcmFrameSize = + isInputPcm ? Util.getPcmFrameSize(encoding, channelCount) : C.LENGTH_UNSET; + boolean canApplyPlaybackParameters = processingEnabled && !useFloatOutput; + Configuration pendingConfiguration = + new Configuration( + isInputPcm, + inputPcmFrameSize, + inputSampleRate, + outputPcmFrameSize, + sampleRate, + outputChannelConfig, + encoding, + specifiedBufferSize, + processingEnabled, + canApplyPlaybackParameters, + availableAudioProcessors); + if (isInitialized()) { + this.pendingConfiguration = pendingConfiguration; + } else { + configuration = pendingConfiguration; + } + } + + private void setupAudioProcessors() { + AudioProcessor[] audioProcessors = configuration.availableAudioProcessors; + ArrayList newAudioProcessors = new ArrayList<>(); + for (AudioProcessor audioProcessor : audioProcessors) { + if (audioProcessor.isActive()) { + newAudioProcessors.add(audioProcessor); + } else { + audioProcessor.flush(); + } + } + int count = newAudioProcessors.size(); + activeAudioProcessors = newAudioProcessors.toArray(new AudioProcessor[count]); + outputBuffers = new ByteBuffer[count]; + flushAudioProcessors(); + } + + private void flushAudioProcessors() { + for (int i = 0; i < activeAudioProcessors.length; i++) { + AudioProcessor audioProcessor = activeAudioProcessors[i]; + audioProcessor.flush(); + outputBuffers[i] = audioProcessor.getOutput(); + } + } + + private void initialize(long presentationTimeUs) throws InitializationException { + // If we're asynchronously releasing a previous audio track then we block until it has been + // released. This guarantees that we cannot end up in a state where we have multiple audio + // track instances. Without this guarantee it would be possible, in extreme cases, to exhaust + // the shared memory that's available for audio track buffers. This would in turn cause the + // initialization of the audio track to fail. + releasingConditionVariable.block(); + + audioTrack = + Assertions.checkNotNull(configuration) + .buildAudioTrack(tunneling, audioAttributes, audioSessionId); + int audioSessionId = audioTrack.getAudioSessionId(); + if (enablePreV21AudioSessionWorkaround) { + if (Util.SDK_INT < 21) { + // The workaround creates an audio track with a two byte buffer on the same session, and + // does not release it until this object is released, which keeps the session active. + if (keepSessionIdAudioTrack != null + && audioSessionId != keepSessionIdAudioTrack.getAudioSessionId()) { + releaseKeepSessionIdAudioTrack(); + } + if (keepSessionIdAudioTrack == null) { + keepSessionIdAudioTrack = initializeKeepSessionIdAudioTrack(audioSessionId); + } + } + } + if (this.audioSessionId != audioSessionId) { + this.audioSessionId = audioSessionId; + if (listener != null) { + listener.onAudioSessionId(audioSessionId); + } + } + + applyPlaybackParameters(playbackParameters, presentationTimeUs); + + audioTrackPositionTracker.setAudioTrack( + audioTrack, + configuration.outputEncoding, + configuration.outputPcmFrameSize, + configuration.bufferSize); + setVolumeInternal(); + + if (auxEffectInfo.effectId != AuxEffectInfo.NO_AUX_EFFECT_ID) { + audioTrack.attachAuxEffect(auxEffectInfo.effectId); + audioTrack.setAuxEffectSendLevel(auxEffectInfo.sendLevel); + } + } + + @Override + public void play() { + playing = true; + if (isInitialized()) { + audioTrackPositionTracker.start(); + audioTrack.play(); + } + } + + @Override + public void handleDiscontinuity() { + // Force resynchronization after a skipped buffer. + if (startMediaTimeState == START_IN_SYNC) { + startMediaTimeState = START_NEED_SYNC; + } + } + + @Override + @SuppressWarnings("ReferenceEquality") + public boolean handleBuffer(ByteBuffer buffer, long presentationTimeUs) + throws InitializationException, WriteException { + Assertions.checkArgument(inputBuffer == null || buffer == inputBuffer); + + if (pendingConfiguration != null) { + if (!drainAudioProcessorsToEndOfStream()) { + // There's still pending data in audio processors to write to the track. + return false; + } else if (!pendingConfiguration.canReuseAudioTrack(configuration)) { + playPendingData(); + if (hasPendingData()) { + // We're waiting for playout on the current audio track to finish. + return false; + } + flush(); + } else { + // The current audio track can be reused for the new configuration. + configuration = pendingConfiguration; + pendingConfiguration = null; + } + // Re-apply playback parameters. + applyPlaybackParameters(playbackParameters, presentationTimeUs); + } + + if (!isInitialized()) { + initialize(presentationTimeUs); + if (playing) { + play(); + } + } + + if (!audioTrackPositionTracker.mayHandleBuffer(getWrittenFrames())) { + return false; + } + + if (inputBuffer == null) { + // We are seeing this buffer for the first time. + if (!buffer.hasRemaining()) { + // The buffer is empty. + return true; + } + + if (!configuration.isInputPcm && framesPerEncodedSample == 0) { + // If this is the first encoded sample, calculate the sample size in frames. + framesPerEncodedSample = getFramesPerEncodedSample(configuration.outputEncoding, buffer); + if (framesPerEncodedSample == 0) { + // We still don't know the number of frames per sample, so drop the buffer. + // For TrueHD this can occur after some seek operations, as not every sample starts with + // a syncframe header. If we chunked samples together so the extracted samples always + // started with a syncframe header, the chunks would be too large. + return true; + } + } + + if (afterDrainPlaybackParameters != null) { + if (!drainAudioProcessorsToEndOfStream()) { + // Don't process any more input until draining completes. + return false; + } + PlaybackParameters newPlaybackParameters = afterDrainPlaybackParameters; + afterDrainPlaybackParameters = null; + applyPlaybackParameters(newPlaybackParameters, presentationTimeUs); + } + + if (startMediaTimeState == START_NOT_SET) { + startMediaTimeUs = Math.max(0, presentationTimeUs); + startMediaTimeState = START_IN_SYNC; + } else { + // Sanity check that presentationTimeUs is consistent with the expected value. + long expectedPresentationTimeUs = + startMediaTimeUs + + configuration.inputFramesToDurationUs( + getSubmittedFrames() - trimmingAudioProcessor.getTrimmedFrameCount()); + if (startMediaTimeState == START_IN_SYNC + && Math.abs(expectedPresentationTimeUs - presentationTimeUs) > 200000) { + Log.e(TAG, "Discontinuity detected [expected " + expectedPresentationTimeUs + ", got " + + presentationTimeUs + "]"); + startMediaTimeState = START_NEED_SYNC; + } + if (startMediaTimeState == START_NEED_SYNC) { + // Adjust startMediaTimeUs to be consistent with the current buffer's start time and the + // number of bytes submitted. + long adjustmentUs = presentationTimeUs - expectedPresentationTimeUs; + startMediaTimeUs += adjustmentUs; + startMediaTimeState = START_IN_SYNC; + if (listener != null && adjustmentUs != 0) { + listener.onPositionDiscontinuity(); + } + } + } + + if (configuration.isInputPcm) { + submittedPcmBytes += buffer.remaining(); + } else { + submittedEncodedFrames += framesPerEncodedSample; + } + + inputBuffer = buffer; + } + + if (configuration.processingEnabled) { + processBuffers(presentationTimeUs); + } else { + writeBuffer(inputBuffer, presentationTimeUs); + } + + if (!inputBuffer.hasRemaining()) { + inputBuffer = null; + return true; + } + + if (audioTrackPositionTracker.isStalled(getWrittenFrames())) { + Log.w(TAG, "Resetting stalled audio track"); + flush(); + return true; + } + + return false; + } + + private void processBuffers(long avSyncPresentationTimeUs) throws WriteException { + int count = activeAudioProcessors.length; + int index = count; + while (index >= 0) { + ByteBuffer input = index > 0 ? outputBuffers[index - 1] + : (inputBuffer != null ? inputBuffer : AudioProcessor.EMPTY_BUFFER); + if (index == count) { + writeBuffer(input, avSyncPresentationTimeUs); + } else { + AudioProcessor audioProcessor = activeAudioProcessors[index]; + audioProcessor.queueInput(input); + ByteBuffer output = audioProcessor.getOutput(); + outputBuffers[index] = output; + if (output.hasRemaining()) { + // Handle the output as input to the next audio processor or the AudioTrack. + index++; + continue; + } + } + + if (input.hasRemaining()) { + // The input wasn't consumed and no output was produced, so give up for now. + return; + } + + // Get more input from upstream. + index--; + } + } + + @SuppressWarnings("ReferenceEquality") + private void writeBuffer(ByteBuffer buffer, long avSyncPresentationTimeUs) throws WriteException { + if (!buffer.hasRemaining()) { + return; + } + if (outputBuffer != null) { + Assertions.checkArgument(outputBuffer == buffer); + } else { + outputBuffer = buffer; + if (Util.SDK_INT < 21) { + int bytesRemaining = buffer.remaining(); + if (preV21OutputBuffer == null || preV21OutputBuffer.length < bytesRemaining) { + preV21OutputBuffer = new byte[bytesRemaining]; + } + int originalPosition = buffer.position(); + buffer.get(preV21OutputBuffer, 0, bytesRemaining); + buffer.position(originalPosition); + preV21OutputBufferOffset = 0; + } + } + int bytesRemaining = buffer.remaining(); + int bytesWritten = 0; + if (Util.SDK_INT < 21) { // isInputPcm == true + // Work out how many bytes we can write without the risk of blocking. + int bytesToWrite = audioTrackPositionTracker.getAvailableBufferSize(writtenPcmBytes); + if (bytesToWrite > 0) { + bytesToWrite = Math.min(bytesRemaining, bytesToWrite); + bytesWritten = audioTrack.write(preV21OutputBuffer, preV21OutputBufferOffset, bytesToWrite); + if (bytesWritten > 0) { + preV21OutputBufferOffset += bytesWritten; + buffer.position(buffer.position() + bytesWritten); + } + } + } else if (tunneling) { + Assertions.checkState(avSyncPresentationTimeUs != C.TIME_UNSET); + bytesWritten = writeNonBlockingWithAvSyncV21(audioTrack, buffer, bytesRemaining, + avSyncPresentationTimeUs); + } else { + bytesWritten = writeNonBlockingV21(audioTrack, buffer, bytesRemaining); + } + + lastFeedElapsedRealtimeMs = SystemClock.elapsedRealtime(); + + if (bytesWritten < 0) { + throw new WriteException(bytesWritten); + } + + if (configuration.isInputPcm) { + writtenPcmBytes += bytesWritten; + } + if (bytesWritten == bytesRemaining) { + if (!configuration.isInputPcm) { + writtenEncodedFrames += framesPerEncodedSample; + } + outputBuffer = null; + } + } + + @Override + public void playToEndOfStream() throws WriteException { + if (!handledEndOfStream && isInitialized() && drainAudioProcessorsToEndOfStream()) { + playPendingData(); + handledEndOfStream = true; + } + } + + private boolean drainAudioProcessorsToEndOfStream() throws WriteException { + boolean audioProcessorNeedsEndOfStream = false; + if (drainingAudioProcessorIndex == C.INDEX_UNSET) { + drainingAudioProcessorIndex = + configuration.processingEnabled ? 0 : activeAudioProcessors.length; + audioProcessorNeedsEndOfStream = true; + } + while (drainingAudioProcessorIndex < activeAudioProcessors.length) { + AudioProcessor audioProcessor = activeAudioProcessors[drainingAudioProcessorIndex]; + if (audioProcessorNeedsEndOfStream) { + audioProcessor.queueEndOfStream(); + } + processBuffers(C.TIME_UNSET); + if (!audioProcessor.isEnded()) { + return false; + } + audioProcessorNeedsEndOfStream = true; + drainingAudioProcessorIndex++; + } + + // Finish writing any remaining output to the track. + if (outputBuffer != null) { + writeBuffer(outputBuffer, C.TIME_UNSET); + if (outputBuffer != null) { + return false; + } + } + drainingAudioProcessorIndex = C.INDEX_UNSET; + return true; + } + + @Override + public boolean isEnded() { + return !isInitialized() || (handledEndOfStream && !hasPendingData()); + } + + @Override + public boolean hasPendingData() { + return isInitialized() && audioTrackPositionTracker.hasPendingData(getWrittenFrames()); + } + + @Override + public void setPlaybackParameters(PlaybackParameters playbackParameters) { + if (configuration != null && !configuration.canApplyPlaybackParameters) { + this.playbackParameters = PlaybackParameters.DEFAULT; + return; + } + PlaybackParameters lastSetPlaybackParameters = getPlaybackParameters(); + if (!playbackParameters.equals(lastSetPlaybackParameters)) { + if (isInitialized()) { + // Drain the audio processors so we can determine the frame position at which the new + // parameters apply. + afterDrainPlaybackParameters = playbackParameters; + } else { + // Update the playback parameters now. They will be applied to the audio processors during + // initialization. + this.playbackParameters = playbackParameters; + } + } + } + + @Override + public PlaybackParameters getPlaybackParameters() { + // Mask the already set parameters. + return afterDrainPlaybackParameters != null + ? afterDrainPlaybackParameters + : !playbackParametersCheckpoints.isEmpty() + ? playbackParametersCheckpoints.getLast().playbackParameters + : playbackParameters; + } + + @Override + public void setAudioAttributes(AudioAttributes audioAttributes) { + if (this.audioAttributes.equals(audioAttributes)) { + return; + } + this.audioAttributes = audioAttributes; + if (tunneling) { + // The audio attributes are ignored in tunneling mode, so no need to reset. + return; + } + flush(); + audioSessionId = C.AUDIO_SESSION_ID_UNSET; + } + + @Override + public void setAudioSessionId(int audioSessionId) { + if (this.audioSessionId != audioSessionId) { + this.audioSessionId = audioSessionId; + flush(); + } + } + + @Override + public void setAuxEffectInfo(AuxEffectInfo auxEffectInfo) { + if (this.auxEffectInfo.equals(auxEffectInfo)) { + return; + } + int effectId = auxEffectInfo.effectId; + float sendLevel = auxEffectInfo.sendLevel; + if (audioTrack != null) { + if (this.auxEffectInfo.effectId != effectId) { + audioTrack.attachAuxEffect(effectId); + } + if (effectId != AuxEffectInfo.NO_AUX_EFFECT_ID) { + audioTrack.setAuxEffectSendLevel(sendLevel); + } + } + this.auxEffectInfo = auxEffectInfo; + } + + @Override + public void enableTunnelingV21(int tunnelingAudioSessionId) { + Assertions.checkState(Util.SDK_INT >= 21); + if (!tunneling || audioSessionId != tunnelingAudioSessionId) { + tunneling = true; + audioSessionId = tunnelingAudioSessionId; + flush(); + } + } + + @Override + public void disableTunneling() { + if (tunneling) { + tunneling = false; + audioSessionId = C.AUDIO_SESSION_ID_UNSET; + flush(); + } + } + + @Override + public void setVolume(float volume) { + if (this.volume != volume) { + this.volume = volume; + setVolumeInternal(); + } + } + + private void setVolumeInternal() { + if (!isInitialized()) { + // Do nothing. + } else if (Util.SDK_INT >= 21) { + setVolumeInternalV21(audioTrack, volume); + } else { + setVolumeInternalV3(audioTrack, volume); + } + } + + @Override + public void pause() { + playing = false; + if (isInitialized() && audioTrackPositionTracker.pause()) { + audioTrack.pause(); + } + } + + @Override + public void flush() { + if (isInitialized()) { + submittedPcmBytes = 0; + submittedEncodedFrames = 0; + writtenPcmBytes = 0; + writtenEncodedFrames = 0; + framesPerEncodedSample = 0; + if (afterDrainPlaybackParameters != null) { + playbackParameters = afterDrainPlaybackParameters; + afterDrainPlaybackParameters = null; + } else if (!playbackParametersCheckpoints.isEmpty()) { + playbackParameters = playbackParametersCheckpoints.getLast().playbackParameters; + } + playbackParametersCheckpoints.clear(); + playbackParametersOffsetUs = 0; + playbackParametersPositionUs = 0; + trimmingAudioProcessor.resetTrimmedFrameCount(); + flushAudioProcessors(); + inputBuffer = null; + outputBuffer = null; + stoppedAudioTrack = false; + handledEndOfStream = false; + drainingAudioProcessorIndex = C.INDEX_UNSET; + avSyncHeader = null; + bytesUntilNextAvSync = 0; + startMediaTimeState = START_NOT_SET; + if (audioTrackPositionTracker.isPlaying()) { + audioTrack.pause(); + } + // AudioTrack.release can take some time, so we call it on a background thread. + final AudioTrack toRelease = audioTrack; + audioTrack = null; + if (pendingConfiguration != null) { + configuration = pendingConfiguration; + pendingConfiguration = null; + } + audioTrackPositionTracker.reset(); + releasingConditionVariable.close(); + new Thread() { + @Override + public void run() { + try { + toRelease.flush(); + toRelease.release(); + } finally { + releasingConditionVariable.open(); + } + } + }.start(); + } + } + + @Override + public void reset() { + flush(); + releaseKeepSessionIdAudioTrack(); + for (AudioProcessor audioProcessor : toIntPcmAvailableAudioProcessors) { + audioProcessor.reset(); + } + for (AudioProcessor audioProcessor : toFloatPcmAvailableAudioProcessors) { + audioProcessor.reset(); + } + audioSessionId = C.AUDIO_SESSION_ID_UNSET; + playing = false; + } + + /** + * Releases {@link #keepSessionIdAudioTrack} asynchronously, if it is non-{@code null}. + */ + private void releaseKeepSessionIdAudioTrack() { + if (keepSessionIdAudioTrack == null) { + return; + } + + // AudioTrack.release can take some time, so we call it on a background thread. + final AudioTrack toRelease = keepSessionIdAudioTrack; + keepSessionIdAudioTrack = null; + new Thread() { + @Override + public void run() { + toRelease.release(); + } + }.start(); + } + + private void applyPlaybackParameters( + PlaybackParameters playbackParameters, long presentationTimeUs) { + PlaybackParameters newPlaybackParameters = + configuration.canApplyPlaybackParameters + ? audioProcessorChain.applyPlaybackParameters(playbackParameters) + : PlaybackParameters.DEFAULT; + // Store the position and corresponding media time from which the parameters will apply. + playbackParametersCheckpoints.add( + new PlaybackParametersCheckpoint( + newPlaybackParameters, + /* mediaTimeUs= */ Math.max(0, presentationTimeUs), + /* positionUs= */ configuration.framesToDurationUs(getWrittenFrames()))); + setupAudioProcessors(); + } + + private long applySpeedup(long positionUs) { + @Nullable PlaybackParametersCheckpoint checkpoint = null; + while (!playbackParametersCheckpoints.isEmpty() + && positionUs >= playbackParametersCheckpoints.getFirst().positionUs) { + checkpoint = playbackParametersCheckpoints.remove(); + } + if (checkpoint != null) { + // We are playing (or about to play) media with the new playback parameters, so update them. + playbackParameters = checkpoint.playbackParameters; + playbackParametersPositionUs = checkpoint.positionUs; + playbackParametersOffsetUs = checkpoint.mediaTimeUs - startMediaTimeUs; + } + + if (playbackParameters.speed == 1f) { + return positionUs + playbackParametersOffsetUs - playbackParametersPositionUs; + } + + if (playbackParametersCheckpoints.isEmpty()) { + return playbackParametersOffsetUs + + audioProcessorChain.getMediaDuration(positionUs - playbackParametersPositionUs); + } + + // We are playing data at a previous playback speed, so fall back to multiplying by the speed. + return playbackParametersOffsetUs + + Util.getMediaDurationForPlayoutDuration( + positionUs - playbackParametersPositionUs, playbackParameters.speed); + } + + private long applySkipping(long positionUs) { + return positionUs + + configuration.framesToDurationUs(audioProcessorChain.getSkippedOutputFrameCount()); + } + + private boolean isInitialized() { + return audioTrack != null; + } + + private long getSubmittedFrames() { + return configuration.isInputPcm + ? (submittedPcmBytes / configuration.inputPcmFrameSize) + : submittedEncodedFrames; + } + + private long getWrittenFrames() { + return configuration.isInputPcm + ? (writtenPcmBytes / configuration.outputPcmFrameSize) + : writtenEncodedFrames; + } + + private static AudioTrack initializeKeepSessionIdAudioTrack(int audioSessionId) { + int sampleRate = 4000; // Equal to private AudioTrack.MIN_SAMPLE_RATE. + int channelConfig = AudioFormat.CHANNEL_OUT_MONO; + @C.PcmEncoding int encoding = C.ENCODING_PCM_16BIT; + int bufferSize = 2; // Use a two byte buffer, as it is not actually used for playback. + return new AudioTrack(C.STREAM_TYPE_DEFAULT, sampleRate, channelConfig, encoding, bufferSize, + MODE_STATIC, audioSessionId); + } + + private static int getChannelConfig(int channelCount, boolean isInputPcm) { + if (Util.SDK_INT <= 28 && !isInputPcm) { + // In passthrough mode the channel count used to configure the audio track doesn't affect how + // the stream is handled, except that some devices do overly-strict channel configuration + // checks. Therefore we override the channel count so that a known-working channel + // configuration is chosen in all cases. See [Internal: b/29116190]. + if (channelCount == 7) { + channelCount = 8; + } else if (channelCount == 3 || channelCount == 4 || channelCount == 5) { + channelCount = 6; + } + } + + // Workaround for Nexus Player not reporting support for mono passthrough. + // (See [Internal: b/34268671].) + if (Util.SDK_INT <= 26 && "fugu".equals(Util.DEVICE) && !isInputPcm && channelCount == 1) { + channelCount = 2; + } + + return Util.getAudioTrackChannelConfig(channelCount); + } + + private static int getMaximumEncodedRateBytesPerSecond(@C.Encoding int encoding) { + switch (encoding) { + case C.ENCODING_AC3: + return 640 * 1000 / 8; + case C.ENCODING_E_AC3: + case C.ENCODING_E_AC3_JOC: + return 6144 * 1000 / 8; + case C.ENCODING_AC4: + return 2688 * 1000 / 8; + case C.ENCODING_DTS: + // DTS allows an 'open' bitrate, but we assume the maximum listed value: 1536 kbit/s. + return 1536 * 1000 / 8; + case C.ENCODING_DTS_HD: + return 18000 * 1000 / 8; + case C.ENCODING_DOLBY_TRUEHD: + return 24500 * 1000 / 8; + case C.ENCODING_INVALID: + case C.ENCODING_PCM_16BIT: + case C.ENCODING_PCM_24BIT: + case C.ENCODING_PCM_32BIT: + case C.ENCODING_PCM_8BIT: + case C.ENCODING_PCM_FLOAT: + case Format.NO_VALUE: + default: + throw new IllegalArgumentException(); + } + } + + private static int getFramesPerEncodedSample(@C.Encoding int encoding, ByteBuffer buffer) { + switch (encoding) { + case C.ENCODING_MP3: + return MpegAudioHeader.getFrameSampleCount(buffer.get(buffer.position())); + case C.ENCODING_DTS: + case C.ENCODING_DTS_HD: + return DtsUtil.parseDtsAudioSampleCount(buffer); + case C.ENCODING_AC3: + case C.ENCODING_E_AC3: + case C.ENCODING_E_AC3_JOC: + return Ac3Util.parseAc3SyncframeAudioSampleCount(buffer); + case C.ENCODING_AC4: + return Ac4Util.parseAc4SyncframeAudioSampleCount(buffer); + case C.ENCODING_DOLBY_TRUEHD: + int syncframeOffset = Ac3Util.findTrueHdSyncframeOffset(buffer); + return syncframeOffset == C.INDEX_UNSET + ? 0 + : (Ac3Util.parseTrueHdSyncframeAudioSampleCount(buffer, syncframeOffset) + * Ac3Util.TRUEHD_RECHUNK_SAMPLE_COUNT); + default: + throw new IllegalStateException("Unexpected audio encoding: " + encoding); + } + } + + @TargetApi(21) + private static int writeNonBlockingV21(AudioTrack audioTrack, ByteBuffer buffer, int size) { + return audioTrack.write(buffer, size, WRITE_NON_BLOCKING); + } + + @TargetApi(21) + private int writeNonBlockingWithAvSyncV21(AudioTrack audioTrack, ByteBuffer buffer, int size, + long presentationTimeUs) { + if (Util.SDK_INT >= 26) { + // The underlying platform AudioTrack writes AV sync headers directly. + return audioTrack.write(buffer, size, WRITE_NON_BLOCKING, presentationTimeUs * 1000); + } + if (avSyncHeader == null) { + avSyncHeader = ByteBuffer.allocate(16); + avSyncHeader.order(ByteOrder.BIG_ENDIAN); + avSyncHeader.putInt(0x55550001); + } + if (bytesUntilNextAvSync == 0) { + avSyncHeader.putInt(4, size); + avSyncHeader.putLong(8, presentationTimeUs * 1000); + avSyncHeader.position(0); + bytesUntilNextAvSync = size; + } + int avSyncHeaderBytesRemaining = avSyncHeader.remaining(); + if (avSyncHeaderBytesRemaining > 0) { + int result = audioTrack.write(avSyncHeader, avSyncHeaderBytesRemaining, WRITE_NON_BLOCKING); + if (result < 0) { + bytesUntilNextAvSync = 0; + return result; + } + if (result < avSyncHeaderBytesRemaining) { + return 0; + } + } + int result = writeNonBlockingV21(audioTrack, buffer, size); + if (result < 0) { + bytesUntilNextAvSync = 0; + return result; + } + bytesUntilNextAvSync -= result; + return result; + } + + @TargetApi(21) + private static void setVolumeInternalV21(AudioTrack audioTrack, float volume) { + audioTrack.setVolume(volume); + } + + private static void setVolumeInternalV3(AudioTrack audioTrack, float volume) { + audioTrack.setStereoVolume(volume, volume); + } + + private void playPendingData() { + if (!stoppedAudioTrack) { + stoppedAudioTrack = true; + audioTrackPositionTracker.handleEndOfStream(getWrittenFrames()); + audioTrack.stop(); + bytesUntilNextAvSync = 0; + } + } + + /** Stores playback parameters with the position and media time at which they apply. */ + private static final class PlaybackParametersCheckpoint { + + private final PlaybackParameters playbackParameters; + private final long mediaTimeUs; + private final long positionUs; + + private PlaybackParametersCheckpoint(PlaybackParameters playbackParameters, long mediaTimeUs, + long positionUs) { + this.playbackParameters = playbackParameters; + this.mediaTimeUs = mediaTimeUs; + this.positionUs = positionUs; + } + + } + + private final class PositionTrackerListener implements AudioTrackPositionTracker.Listener { + + @Override + public void onPositionFramesMismatch( + long audioTimestampPositionFrames, + long audioTimestampSystemTimeUs, + long systemTimeUs, + long playbackPositionUs) { + String message = + "Spurious audio timestamp (frame position mismatch): " + + audioTimestampPositionFrames + + ", " + + audioTimestampSystemTimeUs + + ", " + + systemTimeUs + + ", " + + playbackPositionUs + + ", " + + getSubmittedFrames() + + ", " + + getWrittenFrames(); + if (failOnSpuriousAudioTimestamp) { + throw new InvalidAudioTrackTimestampException(message); + } + Log.w(TAG, message); + } + + @Override + public void onSystemTimeUsMismatch( + long audioTimestampPositionFrames, + long audioTimestampSystemTimeUs, + long systemTimeUs, + long playbackPositionUs) { + String message = + "Spurious audio timestamp (system clock mismatch): " + + audioTimestampPositionFrames + + ", " + + audioTimestampSystemTimeUs + + ", " + + systemTimeUs + + ", " + + playbackPositionUs + + ", " + + getSubmittedFrames() + + ", " + + getWrittenFrames(); + if (failOnSpuriousAudioTimestamp) { + throw new InvalidAudioTrackTimestampException(message); + } + Log.w(TAG, message); + } + + @Override + public void onInvalidLatency(long latencyUs) { + Log.w(TAG, "Ignoring impossibly large audio latency: " + latencyUs); + } + + @Override + public void onUnderrun(int bufferSize, long bufferSizeMs) { + if (listener != null) { + long elapsedSinceLastFeedMs = SystemClock.elapsedRealtime() - lastFeedElapsedRealtimeMs; + listener.onUnderrun(bufferSize, bufferSizeMs, elapsedSinceLastFeedMs); + } + } + } + + /** Stores configuration relating to the audio format. */ + private static final class Configuration { + + public final boolean isInputPcm; + public final int inputPcmFrameSize; + public final int inputSampleRate; + public final int outputPcmFrameSize; + public final int outputSampleRate; + public final int outputChannelConfig; + @C.Encoding public final int outputEncoding; + public final int bufferSize; + public final boolean processingEnabled; + public final boolean canApplyPlaybackParameters; + public final AudioProcessor[] availableAudioProcessors; + + public Configuration( + boolean isInputPcm, + int inputPcmFrameSize, + int inputSampleRate, + int outputPcmFrameSize, + int outputSampleRate, + int outputChannelConfig, + int outputEncoding, + int specifiedBufferSize, + boolean processingEnabled, + boolean canApplyPlaybackParameters, + AudioProcessor[] availableAudioProcessors) { + this.isInputPcm = isInputPcm; + this.inputPcmFrameSize = inputPcmFrameSize; + this.inputSampleRate = inputSampleRate; + this.outputPcmFrameSize = outputPcmFrameSize; + this.outputSampleRate = outputSampleRate; + this.outputChannelConfig = outputChannelConfig; + this.outputEncoding = outputEncoding; + this.bufferSize = specifiedBufferSize != 0 ? specifiedBufferSize : getDefaultBufferSize(); + this.processingEnabled = processingEnabled; + this.canApplyPlaybackParameters = canApplyPlaybackParameters; + this.availableAudioProcessors = availableAudioProcessors; + } + + public boolean canReuseAudioTrack(Configuration audioTrackConfiguration) { + return audioTrackConfiguration.outputEncoding == outputEncoding + && audioTrackConfiguration.outputSampleRate == outputSampleRate + && audioTrackConfiguration.outputChannelConfig == outputChannelConfig; + } + + public long inputFramesToDurationUs(long frameCount) { + return (frameCount * C.MICROS_PER_SECOND) / inputSampleRate; + } + + public long framesToDurationUs(long frameCount) { + return (frameCount * C.MICROS_PER_SECOND) / outputSampleRate; + } + + public long durationUsToFrames(long durationUs) { + return (durationUs * outputSampleRate) / C.MICROS_PER_SECOND; + } + + public AudioTrack buildAudioTrack( + boolean tunneling, AudioAttributes audioAttributes, int audioSessionId) + throws InitializationException { + AudioTrack audioTrack; + if (Util.SDK_INT >= 21) { + audioTrack = createAudioTrackV21(tunneling, audioAttributes, audioSessionId); + } else { + int streamType = Util.getStreamTypeForAudioUsage(audioAttributes.usage); + if (audioSessionId == C.AUDIO_SESSION_ID_UNSET) { + audioTrack = + new AudioTrack( + streamType, + outputSampleRate, + outputChannelConfig, + outputEncoding, + bufferSize, + MODE_STREAM); + } else { + // Re-attach to the same audio session. + audioTrack = + new AudioTrack( + streamType, + outputSampleRate, + outputChannelConfig, + outputEncoding, + bufferSize, + MODE_STREAM, + audioSessionId); + } + } + + int state = audioTrack.getState(); + if (state != STATE_INITIALIZED) { + try { + audioTrack.release(); + } catch (Exception e) { + // The track has already failed to initialize, so it wouldn't be that surprising if + // release were to fail too. Swallow the exception. + } + throw new InitializationException(state, outputSampleRate, outputChannelConfig, bufferSize); + } + return audioTrack; + } + + @TargetApi(21) + private AudioTrack createAudioTrackV21( + boolean tunneling, AudioAttributes audioAttributes, int audioSessionId) { + android.media.AudioAttributes attributes; + if (tunneling) { + attributes = + new android.media.AudioAttributes.Builder() + .setContentType(android.media.AudioAttributes.CONTENT_TYPE_MOVIE) + .setFlags(android.media.AudioAttributes.FLAG_HW_AV_SYNC) + .setUsage(android.media.AudioAttributes.USAGE_MEDIA) + .build(); + } else { + attributes = audioAttributes.getAudioAttributesV21(); + } + AudioFormat format = + new AudioFormat.Builder() + .setChannelMask(outputChannelConfig) + .setEncoding(outputEncoding) + .setSampleRate(outputSampleRate) + .build(); + return new AudioTrack( + attributes, + format, + bufferSize, + MODE_STREAM, + audioSessionId != C.AUDIO_SESSION_ID_UNSET + ? audioSessionId + : AudioManager.AUDIO_SESSION_ID_GENERATE); + } + + private int getDefaultBufferSize() { + if (isInputPcm) { + int minBufferSize = + AudioTrack.getMinBufferSize(outputSampleRate, outputChannelConfig, outputEncoding); + Assertions.checkState(minBufferSize != ERROR_BAD_VALUE); + int multipliedBufferSize = minBufferSize * BUFFER_MULTIPLICATION_FACTOR; + int minAppBufferSize = + (int) durationUsToFrames(MIN_BUFFER_DURATION_US) * outputPcmFrameSize; + int maxAppBufferSize = + (int) + Math.max( + minBufferSize, durationUsToFrames(MAX_BUFFER_DURATION_US) * outputPcmFrameSize); + return Util.constrainValue(multipliedBufferSize, minAppBufferSize, maxAppBufferSize); + } else { + int rate = getMaximumEncodedRateBytesPerSecond(outputEncoding); + if (outputEncoding == C.ENCODING_AC3) { + rate *= AC3_BUFFER_MULTIPLICATION_FACTOR; + } + return (int) (PASSTHROUGH_BUFFER_DURATION_US * rate / C.MICROS_PER_SECOND); + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/DtsUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/DtsUtil.java new file mode 100644 index 0000000000..6e5d749fdf --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/DtsUtil.java @@ -0,0 +1,217 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import java.nio.ByteBuffer; +import java.util.Arrays; + +/** + * Utility methods for parsing DTS frames. + */ +public final class DtsUtil { + + private static final int SYNC_VALUE_BE = 0x7FFE8001; + private static final int SYNC_VALUE_14B_BE = 0x1FFFE800; + private static final int SYNC_VALUE_LE = 0xFE7F0180; + private static final int SYNC_VALUE_14B_LE = 0xFF1F00E8; + private static final byte FIRST_BYTE_BE = (byte) (SYNC_VALUE_BE >>> 24); + private static final byte FIRST_BYTE_14B_BE = (byte) (SYNC_VALUE_14B_BE >>> 24); + private static final byte FIRST_BYTE_LE = (byte) (SYNC_VALUE_LE >>> 24); + private static final byte FIRST_BYTE_14B_LE = (byte) (SYNC_VALUE_14B_LE >>> 24); + + /** + * Maps AMODE to the number of channels. See ETSI TS 102 114 table 5.4. + */ + private static final int[] CHANNELS_BY_AMODE = new int[] {1, 2, 2, 2, 2, 3, 3, 4, 4, 5, 6, 6, 6, + 7, 8, 8}; + + /** + * Maps SFREQ to the sampling frequency in Hz. See ETSI TS 102 144 table 5.5. + */ + private static final int[] SAMPLE_RATE_BY_SFREQ = new int[] {-1, 8000, 16000, 32000, -1, -1, + 11025, 22050, 44100, -1, -1, 12000, 24000, 48000, -1, -1}; + + /** + * Maps RATE to 2 * bitrate in kbit/s. See ETSI TS 102 144 table 5.7. + */ + private static final int[] TWICE_BITRATE_KBPS_BY_RATE = new int[] {64, 112, 128, 192, 224, 256, + 384, 448, 512, 640, 768, 896, 1024, 1152, 1280, 1536, 1920, 2048, 2304, 2560, 2688, 2816, + 2823, 2944, 3072, 3840, 4096, 6144, 7680}; + + /** + * Returns whether a given integer matches a DTS sync word. Synchronization and storage modes are + * defined in ETSI TS 102 114 V1.1.1 (2002-08), Section 5.3. + * + * @param word An integer. + * @return Whether a given integer matches a DTS sync word. + */ + public static boolean isSyncWord(int word) { + return word == SYNC_VALUE_BE + || word == SYNC_VALUE_LE + || word == SYNC_VALUE_14B_BE + || word == SYNC_VALUE_14B_LE; + } + + /** + * Returns the DTS format given {@code data} containing the DTS frame according to ETSI TS 102 114 + * subsections 5.3/5.4. + * + * @param frame The DTS frame to parse. + * @param trackId The track identifier to set on the format. + * @param language The language to set on the format. + * @param drmInitData {@link DrmInitData} to be included in the format. + * @return The DTS format parsed from data in the header. + */ + public static Format parseDtsFormat( + byte[] frame, String trackId, @Nullable String language, @Nullable DrmInitData drmInitData) { + ParsableBitArray frameBits = getNormalizedFrameHeader(frame); + frameBits.skipBits(32 + 1 + 5 + 1 + 7 + 14); // SYNC, FTYPE, SHORT, CPF, NBLKS, FSIZE + int amode = frameBits.readBits(6); + int channelCount = CHANNELS_BY_AMODE[amode]; + int sfreq = frameBits.readBits(4); + int sampleRate = SAMPLE_RATE_BY_SFREQ[sfreq]; + int rate = frameBits.readBits(5); + int bitrate = rate >= TWICE_BITRATE_KBPS_BY_RATE.length ? Format.NO_VALUE + : TWICE_BITRATE_KBPS_BY_RATE[rate] * 1000 / 2; + frameBits.skipBits(10); // MIX, DYNF, TIMEF, AUXF, HDCD, EXT_AUDIO_ID, EXT_AUDIO, ASPF + channelCount += frameBits.readBits(2) > 0 ? 1 : 0; // LFF + return Format.createAudioSampleFormat(trackId, MimeTypes.AUDIO_DTS, null, bitrate, + Format.NO_VALUE, channelCount, sampleRate, null, drmInitData, 0, language); + } + + /** + * Returns the number of audio samples represented by the given DTS frame. + * + * @param data The frame to parse. + * @return The number of audio samples represented by the frame. + */ + public static int parseDtsAudioSampleCount(byte[] data) { + int nblks; + switch (data[0]) { + case FIRST_BYTE_LE: + nblks = ((data[5] & 0x01) << 6) | ((data[4] & 0xFC) >> 2); + break; + case FIRST_BYTE_14B_LE: + nblks = ((data[4] & 0x07) << 4) | ((data[7] & 0x3C) >> 2); + break; + case FIRST_BYTE_14B_BE: + nblks = ((data[5] & 0x07) << 4) | ((data[6] & 0x3C) >> 2); + break; + default: + // We blindly assume FIRST_BYTE_BE if none of the others match. + nblks = ((data[4] & 0x01) << 6) | ((data[5] & 0xFC) >> 2); + } + return (nblks + 1) * 32; + } + + /** + * Like {@link #parseDtsAudioSampleCount(byte[])} but reads from a {@link ByteBuffer}. The + * buffer's position is not modified. + * + * @param buffer The {@link ByteBuffer} from which to read. + * @return The number of audio samples represented by the syncframe. + */ + public static int parseDtsAudioSampleCount(ByteBuffer buffer) { + // See ETSI TS 102 114 subsection 5.4.1. + int position = buffer.position(); + int nblks; + switch (buffer.get(position)) { + case FIRST_BYTE_LE: + nblks = ((buffer.get(position + 5) & 0x01) << 6) | ((buffer.get(position + 4) & 0xFC) >> 2); + break; + case FIRST_BYTE_14B_LE: + nblks = ((buffer.get(position + 4) & 0x07) << 4) | ((buffer.get(position + 7) & 0x3C) >> 2); + break; + case FIRST_BYTE_14B_BE: + nblks = ((buffer.get(position + 5) & 0x07) << 4) | ((buffer.get(position + 6) & 0x3C) >> 2); + break; + default: + // We blindly assume FIRST_BYTE_BE if none of the others match. + nblks = ((buffer.get(position + 4) & 0x01) << 6) | ((buffer.get(position + 5) & 0xFC) >> 2); + } + return (nblks + 1) * 32; + } + + /** + * Returns the size in bytes of the given DTS frame. + * + * @param data The frame to parse. + * @return The frame's size in bytes. + */ + public static int getDtsFrameSize(byte[] data) { + int fsize; + boolean uses14BitPerWord = false; + switch (data[0]) { + case FIRST_BYTE_14B_BE: + fsize = (((data[6] & 0x03) << 12) | ((data[7] & 0xFF) << 4) | ((data[8] & 0x3C) >> 2)) + 1; + uses14BitPerWord = true; + break; + case FIRST_BYTE_LE: + fsize = (((data[4] & 0x03) << 12) | ((data[7] & 0xFF) << 4) | ((data[6] & 0xF0) >> 4)) + 1; + break; + case FIRST_BYTE_14B_LE: + fsize = (((data[7] & 0x03) << 12) | ((data[6] & 0xFF) << 4) | ((data[9] & 0x3C) >> 2)) + 1; + uses14BitPerWord = true; + break; + default: + // We blindly assume FIRST_BYTE_BE if none of the others match. + fsize = (((data[5] & 0x03) << 12) | ((data[6] & 0xFF) << 4) | ((data[7] & 0xF0) >> 4)) + 1; + } + + // If the frame is stored in 14-bit mode, adjust the frame size to reflect the actual byte size. + return uses14BitPerWord ? fsize * 16 / 14 : fsize; + } + + private static ParsableBitArray getNormalizedFrameHeader(byte[] frameHeader) { + if (frameHeader[0] == FIRST_BYTE_BE) { + // The frame is already 16-bit mode, big endian. + return new ParsableBitArray(frameHeader); + } + // Data is not normalized, but we don't want to modify frameHeader. + frameHeader = Arrays.copyOf(frameHeader, frameHeader.length); + if (isLittleEndianFrameHeader(frameHeader)) { + // Change endianness. + for (int i = 0; i < frameHeader.length - 1; i += 2) { + byte temp = frameHeader[i]; + frameHeader[i] = frameHeader[i + 1]; + frameHeader[i + 1] = temp; + } + } + ParsableBitArray frameBits = new ParsableBitArray(frameHeader); + if (frameHeader[0] == (byte) (SYNC_VALUE_14B_BE >> 24)) { + // Discard the 2 most significant bits of each 16 bit word. + ParsableBitArray scratchBits = new ParsableBitArray(frameHeader); + while (scratchBits.bitsLeft() >= 16) { + scratchBits.skipBits(2); + frameBits.putInt(scratchBits.readBits(14), 14); + } + } + frameBits.reset(frameHeader); + return frameBits; + } + + private static boolean isLittleEndianFrameHeader(byte[] frameHeader) { + return frameHeader[0] == FIRST_BYTE_LE || frameHeader[0] == FIRST_BYTE_14B_LE; + } + + private DtsUtil() {} + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/FloatResamplingAudioProcessor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/FloatResamplingAudioProcessor.java new file mode 100644 index 0000000000..c2eb62a0ad --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/FloatResamplingAudioProcessor.java @@ -0,0 +1,109 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.nio.ByteBuffer; + +/** + * An {@link AudioProcessor} that converts high resolution PCM audio to 32-bit float. The following + * encodings are supported as input: + * + *

+ */ +/* package */ final class FloatResamplingAudioProcessor extends BaseAudioProcessor { + + private static final int FLOAT_NAN_AS_INT = Float.floatToIntBits(Float.NaN); + private static final double PCM_32_BIT_INT_TO_PCM_32_BIT_FLOAT_FACTOR = 1.0 / 0x7FFFFFFF; + + @Override + public AudioFormat onConfigure(AudioFormat inputAudioFormat) + throws UnhandledAudioFormatException { + @C.PcmEncoding int encoding = inputAudioFormat.encoding; + if (!Util.isEncodingHighResolutionPcm(encoding)) { + throw new UnhandledAudioFormatException(inputAudioFormat); + } + return encoding != C.ENCODING_PCM_FLOAT + ? new AudioFormat( + inputAudioFormat.sampleRate, inputAudioFormat.channelCount, C.ENCODING_PCM_FLOAT) + : AudioFormat.NOT_SET; + } + + @Override + public void queueInput(ByteBuffer inputBuffer) { + int position = inputBuffer.position(); + int limit = inputBuffer.limit(); + int size = limit - position; + + ByteBuffer buffer; + switch (inputAudioFormat.encoding) { + case C.ENCODING_PCM_24BIT: + buffer = replaceOutputBuffer((size / 3) * 4); + for (int i = position; i < limit; i += 3) { + int pcm32BitInteger = + ((inputBuffer.get(i) & 0xFF) << 8) + | ((inputBuffer.get(i + 1) & 0xFF) << 16) + | ((inputBuffer.get(i + 2) & 0xFF) << 24); + writePcm32BitFloat(pcm32BitInteger, buffer); + } + break; + case C.ENCODING_PCM_32BIT: + buffer = replaceOutputBuffer(size); + for (int i = position; i < limit; i += 4) { + int pcm32BitInteger = + (inputBuffer.get(i) & 0xFF) + | ((inputBuffer.get(i + 1) & 0xFF) << 8) + | ((inputBuffer.get(i + 2) & 0xFF) << 16) + | ((inputBuffer.get(i + 3) & 0xFF) << 24); + writePcm32BitFloat(pcm32BitInteger, buffer); + } + break; + case C.ENCODING_PCM_8BIT: + case C.ENCODING_PCM_16BIT: + case C.ENCODING_PCM_16BIT_BIG_ENDIAN: + case C.ENCODING_PCM_FLOAT: + case C.ENCODING_INVALID: + case Format.NO_VALUE: + default: + // Never happens. + throw new IllegalStateException(); + } + + inputBuffer.position(inputBuffer.limit()); + buffer.flip(); + } + + /** + * Converts the provided 32-bit integer to a 32-bit float value and writes it to {@code buffer}. + * + * @param pcm32BitInt The 32-bit integer value to convert to 32-bit float in [-1.0, 1.0]. + * @param buffer The output buffer. + */ + private static void writePcm32BitFloat(int pcm32BitInt, ByteBuffer buffer) { + float pcm32BitFloat = (float) (PCM_32_BIT_INT_TO_PCM_32_BIT_FLOAT_FACTOR * pcm32BitInt); + int floatBits = Float.floatToIntBits(pcm32BitFloat); + if (floatBits == FLOAT_NAN_AS_INT) { + floatBits = Float.floatToIntBits((float) 0.0); + } + buffer.putInt(floatBits); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ForwardingAudioSink.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ForwardingAudioSink.java new file mode 100644 index 0000000000..4e7f9d69f9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ForwardingAudioSink.java @@ -0,0 +1,151 @@ +/* + * Copyright (C) 2020 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; +import java.nio.ByteBuffer; + +/** An overridable {@link AudioSink} implementation forwarding all methods to another sink. */ +public class ForwardingAudioSink implements AudioSink { + + private final AudioSink sink; + + public ForwardingAudioSink(AudioSink sink) { + this.sink = sink; + } + + @Override + public void setListener(Listener listener) { + sink.setListener(listener); + } + + @Override + public boolean supportsOutput(int channelCount, int encoding) { + return sink.supportsOutput(channelCount, encoding); + } + + @Override + public long getCurrentPositionUs(boolean sourceEnded) { + return sink.getCurrentPositionUs(sourceEnded); + } + + @Override + public void configure( + int inputEncoding, + int inputChannelCount, + int inputSampleRate, + int specifiedBufferSize, + @Nullable int[] outputChannels, + int trimStartFrames, + int trimEndFrames) + throws ConfigurationException { + sink.configure( + inputEncoding, + inputChannelCount, + inputSampleRate, + specifiedBufferSize, + outputChannels, + trimStartFrames, + trimEndFrames); + } + + @Override + public void play() { + sink.play(); + } + + @Override + public void handleDiscontinuity() { + sink.handleDiscontinuity(); + } + + @Override + public boolean handleBuffer(ByteBuffer buffer, long presentationTimeUs) + throws InitializationException, WriteException { + return sink.handleBuffer(buffer, presentationTimeUs); + } + + @Override + public void playToEndOfStream() throws WriteException { + sink.playToEndOfStream(); + } + + @Override + public boolean isEnded() { + return sink.isEnded(); + } + + @Override + public boolean hasPendingData() { + return sink.hasPendingData(); + } + + @Override + public void setPlaybackParameters(PlaybackParameters playbackParameters) { + sink.setPlaybackParameters(playbackParameters); + } + + @Override + public PlaybackParameters getPlaybackParameters() { + return sink.getPlaybackParameters(); + } + + @Override + public void setAudioAttributes(AudioAttributes audioAttributes) { + sink.setAudioAttributes(audioAttributes); + } + + @Override + public void setAudioSessionId(int audioSessionId) { + sink.setAudioSessionId(audioSessionId); + } + + @Override + public void setAuxEffectInfo(AuxEffectInfo auxEffectInfo) { + sink.setAuxEffectInfo(auxEffectInfo); + } + + @Override + public void enableTunnelingV21(int tunnelingAudioSessionId) { + sink.enableTunnelingV21(tunnelingAudioSessionId); + } + + @Override + public void disableTunneling() { + sink.disableTunneling(); + } + + @Override + public void setVolume(float volume) { + sink.setVolume(volume); + } + + @Override + public void pause() { + sink.pause(); + } + + @Override + public void flush() { + sink.flush(); + } + + @Override + public void reset() { + sink.reset(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/MediaCodecAudioRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/MediaCodecAudioRenderer.java new file mode 100644 index 0000000000..42f7e99b78 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/MediaCodecAudioRenderer.java @@ -0,0 +1,1036 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import android.annotation.SuppressLint; +import android.content.Context; +import android.media.MediaCodec; +import android.media.MediaCrypto; +import android.media.MediaFormat; +import android.media.audiofx.Virtualizer; +import android.os.Handler; +import androidx.annotation.CallSuper; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlayerMessage.Target; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioRendererEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.FrameworkMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecUtil.DecoderQueryException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaFormatUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MediaClock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.nio.ByteBuffer; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** + * Decodes and renders audio using {@link MediaCodec} and an {@link AudioSink}. + * + *

This renderer accepts the following messages sent via {@link ExoPlayer#createMessage(Target)} + * on the playback thread: + * + *

+ */ +public class MediaCodecAudioRenderer extends MediaCodecRenderer implements MediaClock { + + /** + * Maximum number of tracked pending stream change times. Generally there is zero or one pending + * stream change. We track more to allow for pending changes that have fewer samples than the + * codec latency. + */ + private static final int MAX_PENDING_STREAM_CHANGE_COUNT = 10; + + private static final String TAG = "MediaCodecAudioRenderer"; + /** + * Custom key used to indicate bits per sample by some decoders on Vivo devices. For example + * OMX.vivo.alac.decoder on the Vivo Z1 Pro. + */ + private static final String VIVO_BITS_PER_SAMPLE_KEY = "v-bits-per-sample"; + + private final Context context; + private final EventDispatcher eventDispatcher; + private final AudioSink audioSink; + private final long[] pendingStreamChangeTimesUs; + + private int codecMaxInputSize; + private boolean passthroughEnabled; + private boolean codecNeedsDiscardChannelsWorkaround; + private boolean codecNeedsEosBufferTimestampWorkaround; + private android.media.MediaFormat passthroughMediaFormat; + @Nullable private Format inputFormat; + private long currentPositionUs; + private boolean allowFirstBufferPositionDiscontinuity; + private boolean allowPositionDiscontinuity; + private long lastInputTimeUs; + private int pendingStreamChangeCount; + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + */ + @SuppressWarnings("deprecation") + public MediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector) { + this( + context, + mediaCodecSelector, + /* drmSessionManager= */ null, + /* playClearSamplesWithoutKeys= */ false); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param drmSessionManager For use with encrypted content. May be null if support for encrypted + * content is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + * @deprecated Use {@link #MediaCodecAudioRenderer(Context, MediaCodecSelector, boolean, Handler, + * AudioRendererEventListener, AudioSink)} instead, and pass DRM-related parameters to the + * {@link MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public MediaCodecAudioRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys) { + this( + context, + mediaCodecSelector, + drmSessionManager, + playClearSamplesWithoutKeys, + /* eventHandler= */ null, + /* eventListener= */ null); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + */ + @SuppressWarnings("deprecation") + public MediaCodecAudioRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + @Nullable Handler eventHandler, + @Nullable AudioRendererEventListener eventListener) { + this( + context, + mediaCodecSelector, + /* drmSessionManager= */ null, + /* playClearSamplesWithoutKeys= */ false, + eventHandler, + eventListener); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param drmSessionManager For use with encrypted content. May be null if support for encrypted + * content is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @deprecated Use {@link #MediaCodecAudioRenderer(Context, MediaCodecSelector, boolean, Handler, + * AudioRendererEventListener, AudioSink)} instead, and pass DRM-related parameters to the + * {@link MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public MediaCodecAudioRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + @Nullable Handler eventHandler, + @Nullable AudioRendererEventListener eventListener) { + this( + context, + mediaCodecSelector, + drmSessionManager, + playClearSamplesWithoutKeys, + eventHandler, + eventListener, + (AudioCapabilities) null); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param drmSessionManager For use with encrypted content. May be null if support for encrypted + * content is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param audioCapabilities The audio capabilities for playback on this device. May be null if the + * default capabilities (no encoded audio passthrough support) should be assumed. + * @param audioProcessors Optional {@link AudioProcessor}s that will process PCM audio before + * output. + * @deprecated Use {@link #MediaCodecAudioRenderer(Context, MediaCodecSelector, boolean, Handler, + * AudioRendererEventListener, AudioSink)} instead, and pass DRM-related parameters to the + * {@link MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public MediaCodecAudioRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + @Nullable Handler eventHandler, + @Nullable AudioRendererEventListener eventListener, + @Nullable AudioCapabilities audioCapabilities, + AudioProcessor... audioProcessors) { + this( + context, + mediaCodecSelector, + drmSessionManager, + playClearSamplesWithoutKeys, + eventHandler, + eventListener, + new DefaultAudioSink(audioCapabilities, audioProcessors)); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param drmSessionManager For use with encrypted content. May be null if support for encrypted + * content is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param audioSink The sink to which audio will be output. + * @deprecated Use {@link #MediaCodecAudioRenderer(Context, MediaCodecSelector, boolean, Handler, + * AudioRendererEventListener, AudioSink)} instead, and pass DRM-related parameters to the + * {@link MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public MediaCodecAudioRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + @Nullable Handler eventHandler, + @Nullable AudioRendererEventListener eventListener, + AudioSink audioSink) { + this( + context, + mediaCodecSelector, + drmSessionManager, + playClearSamplesWithoutKeys, + /* enableDecoderFallback= */ false, + eventHandler, + eventListener, + audioSink); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param enableDecoderFallback Whether to enable fallback to lower-priority decoders if decoder + * initialization fails. This may result in using a decoder that is slower/less efficient than + * the primary decoder. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param audioSink The sink to which audio will be output. + */ + @SuppressWarnings("deprecation") + public MediaCodecAudioRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + boolean enableDecoderFallback, + @Nullable Handler eventHandler, + @Nullable AudioRendererEventListener eventListener, + AudioSink audioSink) { + this( + context, + mediaCodecSelector, + /* drmSessionManager= */ null, + /* playClearSamplesWithoutKeys= */ false, + enableDecoderFallback, + eventHandler, + eventListener, + audioSink); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param drmSessionManager For use with encrypted content. May be null if support for encrypted + * content is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + * @param enableDecoderFallback Whether to enable fallback to lower-priority decoders if decoder + * initialization fails. This may result in using a decoder that is slower/less efficient than + * the primary decoder. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param audioSink The sink to which audio will be output. + * @deprecated Use {@link #MediaCodecAudioRenderer(Context, MediaCodecSelector, boolean, Handler, + * AudioRendererEventListener, AudioSink)} instead, and pass DRM-related parameters to the + * {@link MediaSource} factories. + */ + @Deprecated + public MediaCodecAudioRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + boolean enableDecoderFallback, + @Nullable Handler eventHandler, + @Nullable AudioRendererEventListener eventListener, + AudioSink audioSink) { + super( + C.TRACK_TYPE_AUDIO, + mediaCodecSelector, + drmSessionManager, + playClearSamplesWithoutKeys, + enableDecoderFallback, + /* assumedMinimumCodecOperatingRate= */ 44100); + this.context = context.getApplicationContext(); + this.audioSink = audioSink; + lastInputTimeUs = C.TIME_UNSET; + pendingStreamChangeTimesUs = new long[MAX_PENDING_STREAM_CHANGE_COUNT]; + eventDispatcher = new EventDispatcher(eventHandler, eventListener); + audioSink.setListener(new AudioSinkListener()); + } + + @Override + @Capabilities + protected int supportsFormat( + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + Format format) + throws DecoderQueryException { + String mimeType = format.sampleMimeType; + if (!MimeTypes.isAudio(mimeType)) { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_TYPE); + } + @TunnelingSupport + int tunnelingSupport = Util.SDK_INT >= 21 ? TUNNELING_SUPPORTED : TUNNELING_NOT_SUPPORTED; + boolean supportsFormatDrm = + format.drmInitData == null + || FrameworkMediaCrypto.class.equals(format.exoMediaCryptoType) + || (format.exoMediaCryptoType == null + && supportsFormatDrm(drmSessionManager, format.drmInitData)); + if (supportsFormatDrm + && allowPassthrough(format.channelCount, mimeType) + && mediaCodecSelector.getPassthroughDecoderInfo() != null) { + return RendererCapabilities.create(FORMAT_HANDLED, ADAPTIVE_NOT_SEAMLESS, tunnelingSupport); + } + if ((MimeTypes.AUDIO_RAW.equals(mimeType) + && !audioSink.supportsOutput(format.channelCount, format.pcmEncoding)) + || !audioSink.supportsOutput(format.channelCount, C.ENCODING_PCM_16BIT)) { + // Assume the decoder outputs 16-bit PCM, unless the input is raw. + return RendererCapabilities.create(FORMAT_UNSUPPORTED_SUBTYPE); + } + List decoderInfos = + getDecoderInfos(mediaCodecSelector, format, /* requiresSecureDecoder= */ false); + if (decoderInfos.isEmpty()) { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_SUBTYPE); + } + if (!supportsFormatDrm) { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_DRM); + } + // Check capabilities for the first decoder in the list, which takes priority. + MediaCodecInfo decoderInfo = decoderInfos.get(0); + boolean isFormatSupported = decoderInfo.isFormatSupported(format); + @AdaptiveSupport + int adaptiveSupport = + isFormatSupported && decoderInfo.isSeamlessAdaptationSupported(format) + ? ADAPTIVE_SEAMLESS + : ADAPTIVE_NOT_SEAMLESS; + @FormatSupport + int formatSupport = isFormatSupported ? FORMAT_HANDLED : FORMAT_EXCEEDS_CAPABILITIES; + return RendererCapabilities.create(formatSupport, adaptiveSupport, tunnelingSupport); + } + + @Override + protected List getDecoderInfos( + MediaCodecSelector mediaCodecSelector, Format format, boolean requiresSecureDecoder) + throws DecoderQueryException { + @Nullable String mimeType = format.sampleMimeType; + if (mimeType == null) { + return Collections.emptyList(); + } + if (allowPassthrough(format.channelCount, mimeType)) { + @Nullable + MediaCodecInfo passthroughDecoderInfo = mediaCodecSelector.getPassthroughDecoderInfo(); + if (passthroughDecoderInfo != null) { + return Collections.singletonList(passthroughDecoderInfo); + } + } + List decoderInfos = + mediaCodecSelector.getDecoderInfos( + mimeType, requiresSecureDecoder, /* requiresTunnelingDecoder= */ false); + decoderInfos = MediaCodecUtil.getDecoderInfosSortedByFormatSupport(decoderInfos, format); + if (MimeTypes.AUDIO_E_AC3_JOC.equals(mimeType)) { + // E-AC3 decoders can decode JOC streams, but in 2-D rather than 3-D. + List decoderInfosWithEac3 = new ArrayList<>(decoderInfos); + decoderInfosWithEac3.addAll( + mediaCodecSelector.getDecoderInfos( + MimeTypes.AUDIO_E_AC3, requiresSecureDecoder, /* requiresTunnelingDecoder= */ false)); + decoderInfos = decoderInfosWithEac3; + } + return Collections.unmodifiableList(decoderInfos); + } + + /** + * Returns whether encoded audio passthrough should be used for playing back the input format. + * This implementation returns true if the {@link AudioSink} indicates that encoded audio output + * is supported. + * + * @param channelCount The number of channels in the input media, or {@link Format#NO_VALUE} if + * not known. + * @param mimeType The type of input media. + * @return Whether passthrough playback is supported. + */ + protected boolean allowPassthrough(int channelCount, String mimeType) { + return getPassthroughEncoding(channelCount, mimeType) != C.ENCODING_INVALID; + } + + @Override + protected void configureCodec( + MediaCodecInfo codecInfo, + MediaCodec codec, + Format format, + @Nullable MediaCrypto crypto, + float codecOperatingRate) { + codecMaxInputSize = getCodecMaxInputSize(codecInfo, format, getStreamFormats()); + codecNeedsDiscardChannelsWorkaround = codecNeedsDiscardChannelsWorkaround(codecInfo.name); + codecNeedsEosBufferTimestampWorkaround = codecNeedsEosBufferTimestampWorkaround(codecInfo.name); + passthroughEnabled = codecInfo.passthrough; + String codecMimeType = passthroughEnabled ? MimeTypes.AUDIO_RAW : codecInfo.codecMimeType; + MediaFormat mediaFormat = + getMediaFormat(format, codecMimeType, codecMaxInputSize, codecOperatingRate); + codec.configure(mediaFormat, /* surface= */ null, crypto, /* flags= */ 0); + if (passthroughEnabled) { + // Store the input MIME type if we're using the passthrough codec. + passthroughMediaFormat = mediaFormat; + passthroughMediaFormat.setString(MediaFormat.KEY_MIME, format.sampleMimeType); + } else { + passthroughMediaFormat = null; + } + } + + @Override + protected @KeepCodecResult int canKeepCodec( + MediaCodec codec, MediaCodecInfo codecInfo, Format oldFormat, Format newFormat) { + // TODO: We currently rely on recreating the codec when encoder delay or padding is non-zero. + // Re-creating the codec is necessary to guarantee that onOutputFormatChanged is called, which + // is where encoder delay and padding are propagated to the sink. We should find a better way to + // propagate these values, and then allow the codec to be re-used in cases where this would + // otherwise be possible. + if (getCodecMaxInputSize(codecInfo, newFormat) > codecMaxInputSize + || oldFormat.encoderDelay != 0 + || oldFormat.encoderPadding != 0 + || newFormat.encoderDelay != 0 + || newFormat.encoderPadding != 0) { + return KEEP_CODEC_RESULT_NO; + } else if (codecInfo.isSeamlessAdaptationSupported( + oldFormat, newFormat, /* isNewFormatComplete= */ true)) { + return KEEP_CODEC_RESULT_YES_WITHOUT_RECONFIGURATION; + } else if (canKeepCodecWithFlush(oldFormat, newFormat)) { + return KEEP_CODEC_RESULT_YES_WITH_FLUSH; + } else { + return KEEP_CODEC_RESULT_NO; + } + } + + /** + * Returns whether the codec can be flushed and reused when switching to a new format. Reuse is + * generally possible when the codec would be configured in an identical way after the format + * change (excluding {@link MediaFormat#KEY_MAX_INPUT_SIZE} and configuration that does not come + * from the {@link Format}). + * + * @param oldFormat The first format. + * @param newFormat The second format. + * @return Whether the codec can be flushed and reused when switching to a new format. + */ + protected boolean canKeepCodecWithFlush(Format oldFormat, Format newFormat) { + // Flush and reuse the codec if the audio format and initialization data matches. For Opus, we + // don't flush and reuse the codec because the decoder may discard samples after flushing, which + // would result in audio being dropped just after a stream change (see [Internal: b/143450854]). + return Util.areEqual(oldFormat.sampleMimeType, newFormat.sampleMimeType) + && oldFormat.channelCount == newFormat.channelCount + && oldFormat.sampleRate == newFormat.sampleRate + && oldFormat.pcmEncoding == newFormat.pcmEncoding + && oldFormat.initializationDataEquals(newFormat) + && !MimeTypes.AUDIO_OPUS.equals(oldFormat.sampleMimeType); + } + + @Override + @Nullable + public MediaClock getMediaClock() { + return this; + } + + @Override + protected float getCodecOperatingRateV23( + float operatingRate, Format format, Format[] streamFormats) { + // Use the highest known stream sample-rate up front, to avoid having to reconfigure the codec + // should an adaptive switch to that stream occur. + int maxSampleRate = -1; + for (Format streamFormat : streamFormats) { + int streamSampleRate = streamFormat.sampleRate; + if (streamSampleRate != Format.NO_VALUE) { + maxSampleRate = Math.max(maxSampleRate, streamSampleRate); + } + } + return maxSampleRate == -1 ? CODEC_OPERATING_RATE_UNSET : (maxSampleRate * operatingRate); + } + + @Override + protected void onCodecInitialized(String name, long initializedTimestampMs, + long initializationDurationMs) { + eventDispatcher.decoderInitialized(name, initializedTimestampMs, initializationDurationMs); + } + + @Override + protected void onInputFormatChanged(FormatHolder formatHolder) throws ExoPlaybackException { + super.onInputFormatChanged(formatHolder); + inputFormat = formatHolder.format; + eventDispatcher.inputFormatChanged(inputFormat); + } + + @Override + protected void onOutputFormatChanged(MediaCodec codec, MediaFormat outputMediaFormat) + throws ExoPlaybackException { + @C.Encoding int encoding; + MediaFormat mediaFormat; + if (passthroughMediaFormat != null) { + mediaFormat = passthroughMediaFormat; + encoding = + getPassthroughEncoding( + mediaFormat.getInteger(MediaFormat.KEY_CHANNEL_COUNT), + mediaFormat.getString(MediaFormat.KEY_MIME)); + } else { + mediaFormat = outputMediaFormat; + if (outputMediaFormat.containsKey(VIVO_BITS_PER_SAMPLE_KEY)) { + encoding = Util.getPcmEncoding(outputMediaFormat.getInteger(VIVO_BITS_PER_SAMPLE_KEY)); + } else { + encoding = getPcmEncoding(inputFormat); + } + } + int channelCount = mediaFormat.getInteger(MediaFormat.KEY_CHANNEL_COUNT); + int sampleRate = mediaFormat.getInteger(MediaFormat.KEY_SAMPLE_RATE); + int[] channelMap; + if (codecNeedsDiscardChannelsWorkaround && channelCount == 6 && inputFormat.channelCount < 6) { + channelMap = new int[inputFormat.channelCount]; + for (int i = 0; i < inputFormat.channelCount; i++) { + channelMap[i] = i; + } + } else { + channelMap = null; + } + + try { + audioSink.configure( + encoding, + channelCount, + sampleRate, + 0, + channelMap, + inputFormat.encoderDelay, + inputFormat.encoderPadding); + } catch (AudioSink.ConfigurationException e) { + // TODO(internal: b/145658993) Use outputFormat instead. + throw createRendererException(e, inputFormat); + } + } + + /** + * Returns the {@link C.Encoding} constant to use for passthrough of the given format, or {@link + * C#ENCODING_INVALID} if passthrough is not possible. + */ + @C.Encoding + protected int getPassthroughEncoding(int channelCount, String mimeType) { + if (MimeTypes.AUDIO_E_AC3_JOC.equals(mimeType)) { + // E-AC3 JOC is object-based so the output channel count is arbitrary. + if (audioSink.supportsOutput(/* channelCount= */ Format.NO_VALUE, C.ENCODING_E_AC3_JOC)) { + return MimeTypes.getEncoding(MimeTypes.AUDIO_E_AC3_JOC); + } + // E-AC3 receivers can decode JOC streams, but in 2-D rather than 3-D, so try to fall back. + mimeType = MimeTypes.AUDIO_E_AC3; + } + + @C.Encoding int encoding = MimeTypes.getEncoding(mimeType); + if (audioSink.supportsOutput(channelCount, encoding)) { + return encoding; + } else { + return C.ENCODING_INVALID; + } + } + + /** + * Called when the audio session id becomes known. The default implementation is a no-op. One + * reason for overriding this method would be to instantiate and enable a {@link Virtualizer} in + * order to spatialize the audio channels. For this use case, any {@link Virtualizer} instances + * should be released in {@link #onDisabled()} (if not before). + * + * @see AudioSink.Listener#onAudioSessionId(int) + */ + protected void onAudioSessionId(int audioSessionId) { + // Do nothing. + } + + /** + * @see AudioSink.Listener#onPositionDiscontinuity() + */ + protected void onAudioTrackPositionDiscontinuity() { + // Do nothing. + } + + /** + * @see AudioSink.Listener#onUnderrun(int, long, long) + */ + protected void onAudioTrackUnderrun(int bufferSize, long bufferSizeMs, + long elapsedSinceLastFeedMs) { + // Do nothing. + } + + @Override + protected void onEnabled(boolean joining) throws ExoPlaybackException { + super.onEnabled(joining); + eventDispatcher.enabled(decoderCounters); + int tunnelingAudioSessionId = getConfiguration().tunnelingAudioSessionId; + if (tunnelingAudioSessionId != C.AUDIO_SESSION_ID_UNSET) { + audioSink.enableTunnelingV21(tunnelingAudioSessionId); + } else { + audioSink.disableTunneling(); + } + } + + @Override + protected void onStreamChanged(Format[] formats, long offsetUs) throws ExoPlaybackException { + super.onStreamChanged(formats, offsetUs); + if (lastInputTimeUs != C.TIME_UNSET) { + if (pendingStreamChangeCount == pendingStreamChangeTimesUs.length) { + Log.w( + TAG, + "Too many stream changes, so dropping change at " + + pendingStreamChangeTimesUs[pendingStreamChangeCount - 1]); + } else { + pendingStreamChangeCount++; + } + pendingStreamChangeTimesUs[pendingStreamChangeCount - 1] = lastInputTimeUs; + } + } + + @Override + protected void onPositionReset(long positionUs, boolean joining) throws ExoPlaybackException { + super.onPositionReset(positionUs, joining); + audioSink.flush(); + currentPositionUs = positionUs; + allowFirstBufferPositionDiscontinuity = true; + allowPositionDiscontinuity = true; + lastInputTimeUs = C.TIME_UNSET; + pendingStreamChangeCount = 0; + } + + @Override + protected void onStarted() { + super.onStarted(); + audioSink.play(); + } + + @Override + protected void onStopped() { + updateCurrentPosition(); + audioSink.pause(); + super.onStopped(); + } + + @Override + protected void onDisabled() { + try { + lastInputTimeUs = C.TIME_UNSET; + pendingStreamChangeCount = 0; + audioSink.flush(); + } finally { + try { + super.onDisabled(); + } finally { + eventDispatcher.disabled(decoderCounters); + } + } + } + + @Override + protected void onReset() { + try { + super.onReset(); + } finally { + audioSink.reset(); + } + } + + @Override + public boolean isEnded() { + return super.isEnded() && audioSink.isEnded(); + } + + @Override + public boolean isReady() { + return audioSink.hasPendingData() || super.isReady(); + } + + @Override + public long getPositionUs() { + if (getState() == STATE_STARTED) { + updateCurrentPosition(); + } + return currentPositionUs; + } + + @Override + public void setPlaybackParameters(PlaybackParameters playbackParameters) { + audioSink.setPlaybackParameters(playbackParameters); + } + + @Override + public PlaybackParameters getPlaybackParameters() { + return audioSink.getPlaybackParameters(); + } + + @Override + protected void onQueueInputBuffer(DecoderInputBuffer buffer) { + if (allowFirstBufferPositionDiscontinuity && !buffer.isDecodeOnly()) { + // TODO: Remove this hack once we have a proper fix for [Internal: b/71876314]. + // Allow the position to jump if the first presentable input buffer has a timestamp that + // differs significantly from what was expected. + if (Math.abs(buffer.timeUs - currentPositionUs) > 500000) { + currentPositionUs = buffer.timeUs; + } + allowFirstBufferPositionDiscontinuity = false; + } + lastInputTimeUs = Math.max(buffer.timeUs, lastInputTimeUs); + } + + @CallSuper + @Override + protected void onProcessedOutputBuffer(long presentationTimeUs) { + while (pendingStreamChangeCount != 0 && presentationTimeUs >= pendingStreamChangeTimesUs[0]) { + audioSink.handleDiscontinuity(); + pendingStreamChangeCount--; + System.arraycopy( + pendingStreamChangeTimesUs, + /* srcPos= */ 1, + pendingStreamChangeTimesUs, + /* destPos= */ 0, + pendingStreamChangeCount); + } + } + + @Override + protected boolean processOutputBuffer( + long positionUs, + long elapsedRealtimeUs, + MediaCodec codec, + ByteBuffer buffer, + int bufferIndex, + int bufferFlags, + long bufferPresentationTimeUs, + boolean isDecodeOnlyBuffer, + boolean isLastBuffer, + Format format) + throws ExoPlaybackException { + if (codecNeedsEosBufferTimestampWorkaround + && bufferPresentationTimeUs == 0 + && (bufferFlags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0 + && lastInputTimeUs != C.TIME_UNSET) { + bufferPresentationTimeUs = lastInputTimeUs; + } + + if (passthroughEnabled && (bufferFlags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) { + // Discard output buffers from the passthrough (raw) decoder containing codec specific data. + codec.releaseOutputBuffer(bufferIndex, false); + return true; + } + + if (isDecodeOnlyBuffer) { + codec.releaseOutputBuffer(bufferIndex, false); + decoderCounters.skippedOutputBufferCount++; + audioSink.handleDiscontinuity(); + return true; + } + + try { + if (audioSink.handleBuffer(buffer, bufferPresentationTimeUs)) { + codec.releaseOutputBuffer(bufferIndex, false); + decoderCounters.renderedOutputBufferCount++; + return true; + } + } catch (AudioSink.InitializationException | AudioSink.WriteException e) { + // TODO(internal: b/145658993) Use outputFormat instead. + throw createRendererException(e, inputFormat); + } + return false; + } + + @Override + protected void renderToEndOfStream() throws ExoPlaybackException { + try { + audioSink.playToEndOfStream(); + } catch (AudioSink.WriteException e) { + // TODO(internal: b/145658993) Use outputFormat instead. + throw createRendererException(e, inputFormat); + } + } + + @Override + public void handleMessage(int messageType, @Nullable Object message) throws ExoPlaybackException { + switch (messageType) { + case C.MSG_SET_VOLUME: + audioSink.setVolume((Float) message); + break; + case C.MSG_SET_AUDIO_ATTRIBUTES: + AudioAttributes audioAttributes = (AudioAttributes) message; + audioSink.setAudioAttributes(audioAttributes); + break; + case C.MSG_SET_AUX_EFFECT_INFO: + AuxEffectInfo auxEffectInfo = (AuxEffectInfo) message; + audioSink.setAuxEffectInfo(auxEffectInfo); + break; + default: + super.handleMessage(messageType, message); + break; + } + } + + /** + * Returns a maximum input size suitable for configuring a codec for {@code format} in a way that + * will allow possible adaptation to other compatible formats in {@code streamFormats}. + * + * @param codecInfo A {@link MediaCodecInfo} describing the decoder. + * @param format The {@link Format} for which the codec is being configured. + * @param streamFormats The possible stream formats. + * @return A suitable maximum input size. + */ + protected int getCodecMaxInputSize( + MediaCodecInfo codecInfo, Format format, Format[] streamFormats) { + int maxInputSize = getCodecMaxInputSize(codecInfo, format); + if (streamFormats.length == 1) { + // The single entry in streamFormats must correspond to the format for which the codec is + // being configured. + return maxInputSize; + } + for (Format streamFormat : streamFormats) { + if (codecInfo.isSeamlessAdaptationSupported( + format, streamFormat, /* isNewFormatComplete= */ false)) { + maxInputSize = Math.max(maxInputSize, getCodecMaxInputSize(codecInfo, streamFormat)); + } + } + return maxInputSize; + } + + /** + * Returns a maximum input buffer size for a given {@link Format}. + * + * @param codecInfo A {@link MediaCodecInfo} describing the decoder. + * @param format The {@link Format}. + * @return A maximum input buffer size in bytes, or {@link Format#NO_VALUE} if a maximum could not + * be determined. + */ + private int getCodecMaxInputSize(MediaCodecInfo codecInfo, Format format) { + if ("OMX.google.raw.decoder".equals(codecInfo.name)) { + // OMX.google.raw.decoder didn't resize its output buffers correctly prior to N, except on + // Android TV running M, so there's no point requesting a non-default input size. Doing so may + // cause a native crash, whereas not doing so will cause a more controlled failure when + // attempting to fill an input buffer. See: https://github.com/google/ExoPlayer/issues/4057. + if (Util.SDK_INT < 24 && !(Util.SDK_INT == 23 && Util.isTv(context))) { + return Format.NO_VALUE; + } + } + return format.maxInputSize; + } + + /** + * Returns the framework {@link MediaFormat} that can be used to configure a {@link MediaCodec} + * for decoding the given {@link Format} for playback. + * + * @param format The {@link Format} of the media. + * @param codecMimeType The MIME type handled by the codec. + * @param codecMaxInputSize The maximum input size supported by the codec. + * @param codecOperatingRate The codec operating rate, or {@link #CODEC_OPERATING_RATE_UNSET} if + * no codec operating rate should be set. + * @return The framework {@link MediaFormat}. + */ + @SuppressLint("InlinedApi") + protected MediaFormat getMediaFormat( + Format format, String codecMimeType, int codecMaxInputSize, float codecOperatingRate) { + MediaFormat mediaFormat = new MediaFormat(); + // Set format parameters that should always be set. + mediaFormat.setString(MediaFormat.KEY_MIME, codecMimeType); + mediaFormat.setInteger(MediaFormat.KEY_CHANNEL_COUNT, format.channelCount); + mediaFormat.setInteger(MediaFormat.KEY_SAMPLE_RATE, format.sampleRate); + MediaFormatUtil.setCsdBuffers(mediaFormat, format.initializationData); + // Set codec max values. + MediaFormatUtil.maybeSetInteger(mediaFormat, MediaFormat.KEY_MAX_INPUT_SIZE, codecMaxInputSize); + // Set codec configuration values. + if (Util.SDK_INT >= 23) { + mediaFormat.setInteger(MediaFormat.KEY_PRIORITY, 0 /* realtime priority */); + if (codecOperatingRate != CODEC_OPERATING_RATE_UNSET && !deviceDoesntSupportOperatingRate()) { + mediaFormat.setFloat(MediaFormat.KEY_OPERATING_RATE, codecOperatingRate); + } + } + if (Util.SDK_INT <= 28 && MimeTypes.AUDIO_AC4.equals(format.sampleMimeType)) { + // On some older builds, the AC-4 decoder expects to receive samples formatted as raw frames + // not sync frames. Set a format key to override this. + mediaFormat.setInteger("ac4-is-sync", 1); + } + return mediaFormat; + } + + private void updateCurrentPosition() { + long newCurrentPositionUs = audioSink.getCurrentPositionUs(isEnded()); + if (newCurrentPositionUs != AudioSink.CURRENT_POSITION_NOT_SET) { + currentPositionUs = + allowPositionDiscontinuity + ? newCurrentPositionUs + : Math.max(currentPositionUs, newCurrentPositionUs); + allowPositionDiscontinuity = false; + } + } + + /** + * Returns whether the device's decoders are known to not support setting the codec operating + * rate. + * + *

See GitHub issue #5821. + */ + private static boolean deviceDoesntSupportOperatingRate() { + return Util.SDK_INT == 23 + && ("ZTE B2017G".equals(Util.MODEL) || "AXON 7 mini".equals(Util.MODEL)); + } + + /** + * Returns whether the decoder is known to output six audio channels when provided with input with + * fewer than six channels. + *

+ * See [Internal: b/35655036]. + */ + private static boolean codecNeedsDiscardChannelsWorkaround(String codecName) { + // The workaround applies to Samsung Galaxy S6 and Samsung Galaxy S7. + return Util.SDK_INT < 24 && "OMX.SEC.aac.dec".equals(codecName) + && "samsung".equals(Util.MANUFACTURER) + && (Util.DEVICE.startsWith("zeroflte") || Util.DEVICE.startsWith("herolte") + || Util.DEVICE.startsWith("heroqlte")); + } + + /** + * Returns whether the decoder may output a non-empty buffer with timestamp 0 as the end of stream + * buffer. + * + *

See GitHub issue #5045. + */ + private static boolean codecNeedsEosBufferTimestampWorkaround(String codecName) { + return Util.SDK_INT < 21 + && "OMX.SEC.mp3.dec".equals(codecName) + && "samsung".equals(Util.MANUFACTURER) + && (Util.DEVICE.startsWith("baffin") + || Util.DEVICE.startsWith("grand") + || Util.DEVICE.startsWith("fortuna") + || Util.DEVICE.startsWith("gprimelte") + || Util.DEVICE.startsWith("j2y18lte") + || Util.DEVICE.startsWith("ms01")); + } + + @C.Encoding + private static int getPcmEncoding(Format format) { + // If the format is anything other than PCM then we assume that the audio decoder will output + // 16-bit PCM. + return MimeTypes.AUDIO_RAW.equals(format.sampleMimeType) + ? format.pcmEncoding + : C.ENCODING_PCM_16BIT; + } + + private final class AudioSinkListener implements AudioSink.Listener { + + @Override + public void onAudioSessionId(int audioSessionId) { + eventDispatcher.audioSessionId(audioSessionId); + MediaCodecAudioRenderer.this.onAudioSessionId(audioSessionId); + } + + @Override + public void onPositionDiscontinuity() { + onAudioTrackPositionDiscontinuity(); + // We are out of sync so allow currentPositionUs to jump backwards. + MediaCodecAudioRenderer.this.allowPositionDiscontinuity = true; + } + + @Override + public void onUnderrun(int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs) { + eventDispatcher.audioTrackUnderrun(bufferSize, bufferSizeMs, elapsedSinceLastFeedMs); + onAudioTrackUnderrun(bufferSize, bufferSizeMs, elapsedSinceLastFeedMs); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ResamplingAudioProcessor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ResamplingAudioProcessor.java new file mode 100644 index 0000000000..efd8a30d61 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/ResamplingAudioProcessor.java @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import java.nio.ByteBuffer; + +/** + * An {@link AudioProcessor} that converts different PCM audio encodings to 16-bit integer PCM. The + * following encodings are supported as input: + * + *

    + *
  • {@link C#ENCODING_PCM_8BIT} + *
  • {@link C#ENCODING_PCM_16BIT} ({@link #isActive()} will return {@code false}) + *
  • {@link C#ENCODING_PCM_16BIT_BIG_ENDIAN} + *
  • {@link C#ENCODING_PCM_24BIT} + *
  • {@link C#ENCODING_PCM_32BIT} + *
  • {@link C#ENCODING_PCM_FLOAT} + *
+ */ +/* package */ final class ResamplingAudioProcessor extends BaseAudioProcessor { + + @Override + public AudioFormat onConfigure(AudioFormat inputAudioFormat) + throws UnhandledAudioFormatException { + @C.PcmEncoding int encoding = inputAudioFormat.encoding; + if (encoding != C.ENCODING_PCM_8BIT + && encoding != C.ENCODING_PCM_16BIT + && encoding != C.ENCODING_PCM_16BIT_BIG_ENDIAN + && encoding != C.ENCODING_PCM_24BIT + && encoding != C.ENCODING_PCM_32BIT + && encoding != C.ENCODING_PCM_FLOAT) { + throw new UnhandledAudioFormatException(inputAudioFormat); + } + return encoding != C.ENCODING_PCM_16BIT + ? new AudioFormat( + inputAudioFormat.sampleRate, inputAudioFormat.channelCount, C.ENCODING_PCM_16BIT) + : AudioFormat.NOT_SET; + } + + @Override + public void queueInput(ByteBuffer inputBuffer) { + // Prepare the output buffer. + int position = inputBuffer.position(); + int limit = inputBuffer.limit(); + int size = limit - position; + int resampledSize; + switch (inputAudioFormat.encoding) { + case C.ENCODING_PCM_8BIT: + resampledSize = size * 2; + break; + case C.ENCODING_PCM_16BIT_BIG_ENDIAN: + resampledSize = size; + break; + case C.ENCODING_PCM_24BIT: + resampledSize = (size / 3) * 2; + break; + case C.ENCODING_PCM_32BIT: + case C.ENCODING_PCM_FLOAT: + resampledSize = size / 2; + break; + case C.ENCODING_PCM_16BIT: + case C.ENCODING_INVALID: + case Format.NO_VALUE: + default: + throw new IllegalStateException(); + } + + // Resample the little endian input and update the input/output buffers. + ByteBuffer buffer = replaceOutputBuffer(resampledSize); + switch (inputAudioFormat.encoding) { + case C.ENCODING_PCM_8BIT: + // 8 -> 16 bit resampling. Shift each byte from [0, 256) to [-128, 128) and scale up. + for (int i = position; i < limit; i++) { + buffer.put((byte) 0); + buffer.put((byte) ((inputBuffer.get(i) & 0xFF) - 128)); + } + break; + case C.ENCODING_PCM_16BIT_BIG_ENDIAN: + // Big endian to little endian resampling. Swap the byte order. + for (int i = position; i < limit; i += 2) { + buffer.put(inputBuffer.get(i + 1)); + buffer.put(inputBuffer.get(i)); + } + break; + case C.ENCODING_PCM_24BIT: + // 24 -> 16 bit resampling. Drop the least significant byte. + for (int i = position; i < limit; i += 3) { + buffer.put(inputBuffer.get(i + 1)); + buffer.put(inputBuffer.get(i + 2)); + } + break; + case C.ENCODING_PCM_32BIT: + // 32 -> 16 bit resampling. Drop the two least significant bytes. + for (int i = position; i < limit; i += 4) { + buffer.put(inputBuffer.get(i + 2)); + buffer.put(inputBuffer.get(i + 3)); + } + break; + case C.ENCODING_PCM_FLOAT: + // 32 bit floating point -> 16 bit resampling. Floating point values are in the range + // [-1.0, 1.0], so need to be scaled by Short.MAX_VALUE. + for (int i = position; i < limit; i += 4) { + short value = (short) (inputBuffer.getFloat(i) * Short.MAX_VALUE); + buffer.put((byte) (value & 0xFF)); + buffer.put((byte) ((value >> 8) & 0xFF)); + } + break; + case C.ENCODING_PCM_16BIT: + case C.ENCODING_INVALID: + case Format.NO_VALUE: + default: + // Never happens. + throw new IllegalStateException(); + } + inputBuffer.position(inputBuffer.limit()); + buffer.flip(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SilenceSkippingAudioProcessor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SilenceSkippingAudioProcessor.java new file mode 100644 index 0000000000..6a2c5ae9a6 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SilenceSkippingAudioProcessor.java @@ -0,0 +1,352 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.nio.ByteBuffer; + +/** + * An {@link AudioProcessor} that skips silence in the input stream. Input and output are 16-bit + * PCM. + */ +public final class SilenceSkippingAudioProcessor extends BaseAudioProcessor { + + /** + * The minimum duration of audio that must be below {@link #SILENCE_THRESHOLD_LEVEL} to classify + * that part of audio as silent, in microseconds. + */ + private static final long MINIMUM_SILENCE_DURATION_US = 150_000; + /** + * The duration of silence by which to extend non-silent sections, in microseconds. The value must + * not exceed {@link #MINIMUM_SILENCE_DURATION_US}. + */ + private static final long PADDING_SILENCE_US = 20_000; + /** + * The absolute level below which an individual PCM sample is classified as silent. Note: the + * specified value will be rounded so that the threshold check only depends on the more + * significant byte, for efficiency. + */ + private static final short SILENCE_THRESHOLD_LEVEL = 1024; + + /** + * Threshold for classifying an individual PCM sample as silent based on its more significant + * byte. This is {@link #SILENCE_THRESHOLD_LEVEL} divided by 256 with rounding. + */ + private static final byte SILENCE_THRESHOLD_LEVEL_MSB = (SILENCE_THRESHOLD_LEVEL + 128) >> 8; + + /** Trimming states. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + STATE_NOISY, + STATE_MAYBE_SILENT, + STATE_SILENT, + }) + private @interface State {} + /** State when the input is not silent. */ + private static final int STATE_NOISY = 0; + /** State when the input may be silent but we haven't read enough yet to know. */ + private static final int STATE_MAYBE_SILENT = 1; + /** State when the input is silent. */ + private static final int STATE_SILENT = 2; + + private int bytesPerFrame; + + private boolean enabled; + + /** + * Buffers audio data that may be classified as silence while in {@link #STATE_MAYBE_SILENT}. If + * the input becomes noisy before the buffer has filled, it will be output. Otherwise, the buffer + * contents will be dropped and the state will transition to {@link #STATE_SILENT}. + */ + private byte[] maybeSilenceBuffer; + + /** + * Stores the latest part of the input while silent. It will be output as padding if the next + * input is noisy. + */ + private byte[] paddingBuffer; + + @State private int state; + private int maybeSilenceBufferSize; + private int paddingSize; + private boolean hasOutputNoise; + private long skippedFrames; + + /** Creates a new silence trimming audio processor. */ + public SilenceSkippingAudioProcessor() { + maybeSilenceBuffer = Util.EMPTY_BYTE_ARRAY; + paddingBuffer = Util.EMPTY_BYTE_ARRAY; + } + + /** + * Sets whether to skip silence in the input. This method may only be called after draining data + * through the processor. The value returned by {@link #isActive()} may change, and the processor + * must be {@link #flush() flushed} before queueing more data. + * + * @param enabled Whether to skip silence in the input. + */ + public void setEnabled(boolean enabled) { + this.enabled = enabled; + } + + /** + * Returns the total number of frames of input audio that were skipped due to being classified as + * silence since the last call to {@link #flush()}. + */ + public long getSkippedFrames() { + return skippedFrames; + } + + // AudioProcessor implementation. + + @Override + public AudioFormat onConfigure(AudioFormat inputAudioFormat) + throws UnhandledAudioFormatException { + if (inputAudioFormat.encoding != C.ENCODING_PCM_16BIT) { + throw new UnhandledAudioFormatException(inputAudioFormat); + } + return enabled ? inputAudioFormat : AudioFormat.NOT_SET; + } + + @Override + public boolean isActive() { + return enabled; + } + + @Override + public void queueInput(ByteBuffer inputBuffer) { + while (inputBuffer.hasRemaining() && !hasPendingOutput()) { + switch (state) { + case STATE_NOISY: + processNoisy(inputBuffer); + break; + case STATE_MAYBE_SILENT: + processMaybeSilence(inputBuffer); + break; + case STATE_SILENT: + processSilence(inputBuffer); + break; + default: + throw new IllegalStateException(); + } + } + } + + @Override + protected void onQueueEndOfStream() { + if (maybeSilenceBufferSize > 0) { + // We haven't received enough silence to transition to the silent state, so output the buffer. + output(maybeSilenceBuffer, maybeSilenceBufferSize); + } + if (!hasOutputNoise) { + skippedFrames += paddingSize / bytesPerFrame; + } + } + + @Override + protected void onFlush() { + if (enabled) { + bytesPerFrame = inputAudioFormat.bytesPerFrame; + int maybeSilenceBufferSize = durationUsToFrames(MINIMUM_SILENCE_DURATION_US) * bytesPerFrame; + if (maybeSilenceBuffer.length != maybeSilenceBufferSize) { + maybeSilenceBuffer = new byte[maybeSilenceBufferSize]; + } + paddingSize = durationUsToFrames(PADDING_SILENCE_US) * bytesPerFrame; + if (paddingBuffer.length != paddingSize) { + paddingBuffer = new byte[paddingSize]; + } + } + state = STATE_NOISY; + skippedFrames = 0; + maybeSilenceBufferSize = 0; + hasOutputNoise = false; + } + + @Override + protected void onReset() { + enabled = false; + paddingSize = 0; + maybeSilenceBuffer = Util.EMPTY_BYTE_ARRAY; + paddingBuffer = Util.EMPTY_BYTE_ARRAY; + } + + // Internal methods. + + /** + * Incrementally processes new input from {@code inputBuffer} while in {@link #STATE_NOISY}, + * updating the state if needed. + */ + private void processNoisy(ByteBuffer inputBuffer) { + int limit = inputBuffer.limit(); + + // Check if there's any noise within the maybe silence buffer duration. + inputBuffer.limit(Math.min(limit, inputBuffer.position() + maybeSilenceBuffer.length)); + int noiseLimit = findNoiseLimit(inputBuffer); + if (noiseLimit == inputBuffer.position()) { + // The buffer contains the start of possible silence. + state = STATE_MAYBE_SILENT; + } else { + inputBuffer.limit(noiseLimit); + output(inputBuffer); + } + + // Restore the limit. + inputBuffer.limit(limit); + } + + /** + * Incrementally processes new input from {@code inputBuffer} while in {@link + * #STATE_MAYBE_SILENT}, updating the state if needed. + */ + private void processMaybeSilence(ByteBuffer inputBuffer) { + int limit = inputBuffer.limit(); + int noisePosition = findNoisePosition(inputBuffer); + int maybeSilenceInputSize = noisePosition - inputBuffer.position(); + int maybeSilenceBufferRemaining = maybeSilenceBuffer.length - maybeSilenceBufferSize; + if (noisePosition < limit && maybeSilenceInputSize < maybeSilenceBufferRemaining) { + // The maybe silence buffer isn't full, so output it and switch back to the noisy state. + output(maybeSilenceBuffer, maybeSilenceBufferSize); + maybeSilenceBufferSize = 0; + state = STATE_NOISY; + } else { + // Fill as much of the maybe silence buffer as possible. + int bytesToWrite = Math.min(maybeSilenceInputSize, maybeSilenceBufferRemaining); + inputBuffer.limit(inputBuffer.position() + bytesToWrite); + inputBuffer.get(maybeSilenceBuffer, maybeSilenceBufferSize, bytesToWrite); + maybeSilenceBufferSize += bytesToWrite; + if (maybeSilenceBufferSize == maybeSilenceBuffer.length) { + // We've reached a period of silence, so skip it, taking in to account padding for both + // the noisy to silent transition and any future silent to noisy transition. + if (hasOutputNoise) { + output(maybeSilenceBuffer, paddingSize); + skippedFrames += (maybeSilenceBufferSize - paddingSize * 2) / bytesPerFrame; + } else { + skippedFrames += (maybeSilenceBufferSize - paddingSize) / bytesPerFrame; + } + updatePaddingBuffer(inputBuffer, maybeSilenceBuffer, maybeSilenceBufferSize); + maybeSilenceBufferSize = 0; + state = STATE_SILENT; + } + + // Restore the limit. + inputBuffer.limit(limit); + } + } + + /** + * Incrementally processes new input from {@code inputBuffer} while in {@link #STATE_SILENT}, + * updating the state if needed. + */ + private void processSilence(ByteBuffer inputBuffer) { + int limit = inputBuffer.limit(); + int noisyPosition = findNoisePosition(inputBuffer); + inputBuffer.limit(noisyPosition); + skippedFrames += inputBuffer.remaining() / bytesPerFrame; + updatePaddingBuffer(inputBuffer, paddingBuffer, paddingSize); + if (noisyPosition < limit) { + // Output the padding, which may include previous input as well as new input, then transition + // back to the noisy state. + output(paddingBuffer, paddingSize); + state = STATE_NOISY; + + // Restore the limit. + inputBuffer.limit(limit); + } + } + + /** + * Copies {@code length} elements from {@code data} to populate a new output buffer from the + * processor. + */ + private void output(byte[] data, int length) { + replaceOutputBuffer(length).put(data, 0, length).flip(); + if (length > 0) { + hasOutputNoise = true; + } + } + + /** + * Copies remaining bytes from {@code data} to populate a new output buffer from the processor. + */ + private void output(ByteBuffer data) { + int length = data.remaining(); + replaceOutputBuffer(length).put(data).flip(); + if (length > 0) { + hasOutputNoise = true; + } + } + + /** + * Fills {@link #paddingBuffer} using data from {@code input}, plus any additional buffered data + * at the end of {@code buffer} (up to its {@code size}) required to fill it, advancing the input + * position. + */ + private void updatePaddingBuffer(ByteBuffer input, byte[] buffer, int size) { + int fromInputSize = Math.min(input.remaining(), paddingSize); + int fromBufferSize = paddingSize - fromInputSize; + System.arraycopy( + /* src= */ buffer, + /* srcPos= */ size - fromBufferSize, + /* dest= */ paddingBuffer, + /* destPos= */ 0, + /* length= */ fromBufferSize); + input.position(input.limit() - fromInputSize); + input.get(paddingBuffer, fromBufferSize, fromInputSize); + } + + /** + * Returns the number of input frames corresponding to {@code durationUs} microseconds of audio. + */ + private int durationUsToFrames(long durationUs) { + return (int) ((durationUs * inputAudioFormat.sampleRate) / C.MICROS_PER_SECOND); + } + + /** + * Returns the earliest byte position in [position, limit) of {@code buffer} that contains a frame + * classified as a noisy frame, or the limit of the buffer if no such frame exists. + */ + private int findNoisePosition(ByteBuffer buffer) { + // The input is in ByteOrder.nativeOrder(), which is little endian on Android. + for (int i = buffer.position() + 1; i < buffer.limit(); i += 2) { + if (Math.abs(buffer.get(i)) > SILENCE_THRESHOLD_LEVEL_MSB) { + // Round to the start of the frame. + return bytesPerFrame * (i / bytesPerFrame); + } + } + return buffer.limit(); + } + + /** + * Returns the earliest byte position in [position, limit) of {@code buffer} such that all frames + * from the byte position to the limit are classified as silent. + */ + private int findNoiseLimit(ByteBuffer buffer) { + // The input is in ByteOrder.nativeOrder(), which is little endian on Android. + for (int i = buffer.limit() - 1; i >= buffer.position(); i -= 2) { + if (Math.abs(buffer.get(i)) > SILENCE_THRESHOLD_LEVEL_MSB) { + // Return the start of the next frame. + return bytesPerFrame * (i / bytesPerFrame) + bytesPerFrame; + } + } + return buffer.position(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SimpleDecoderAudioRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SimpleDecoderAudioRenderer.java new file mode 100644 index 0000000000..5e86e0ad78 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SimpleDecoderAudioRenderer.java @@ -0,0 +1,758 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import android.media.audiofx.Virtualizer; +import android.os.Handler; +import android.os.SystemClock; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.BaseRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlayerMessage.Target; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioRendererEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderCounters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.SimpleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.SimpleOutputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession.DrmSessionException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MediaClock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TraceUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Decodes and renders audio using a {@link SimpleDecoder}. + * + *

This renderer accepts the following messages sent via {@link ExoPlayer#createMessage(Target)} + * on the playback thread: + * + *

    + *
  • Message with type {@link C#MSG_SET_VOLUME} to set the volume. The message payload should be + * a {@link Float} with 0 being silence and 1 being unity gain. + *
  • Message with type {@link C#MSG_SET_AUDIO_ATTRIBUTES} to set the audio attributes. The + * message payload should be an {@link org.mozilla.thirdparty.com.google.android.exoplayer2audio.AudioAttributes} + * instance that will configure the underlying audio track. + *
  • Message with type {@link C#MSG_SET_AUX_EFFECT_INFO} to set the auxiliary effect. The + * message payload should be an {@link AuxEffectInfo} instance that will configure the + * underlying audio track. + *
+ */ +public abstract class SimpleDecoderAudioRenderer extends BaseRenderer implements MediaClock { + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + REINITIALIZATION_STATE_NONE, + REINITIALIZATION_STATE_SIGNAL_END_OF_STREAM, + REINITIALIZATION_STATE_WAIT_END_OF_STREAM + }) + private @interface ReinitializationState {} + /** + * The decoder does not need to be re-initialized. + */ + private static final int REINITIALIZATION_STATE_NONE = 0; + /** + * The input format has changed in a way that requires the decoder to be re-initialized, but we + * haven't yet signaled an end of stream to the existing decoder. We need to do so in order to + * ensure that it outputs any remaining buffers before we release it. + */ + private static final int REINITIALIZATION_STATE_SIGNAL_END_OF_STREAM = 1; + /** + * The input format has changed in a way that requires the decoder to be re-initialized, and we've + * signaled an end of stream to the existing decoder. We're waiting for the decoder to output an + * end of stream signal to indicate that it has output any remaining buffers before we release it. + */ + private static final int REINITIALIZATION_STATE_WAIT_END_OF_STREAM = 2; + + private final DrmSessionManager drmSessionManager; + private final boolean playClearSamplesWithoutKeys; + private final EventDispatcher eventDispatcher; + private final AudioSink audioSink; + private final DecoderInputBuffer flagsOnlyBuffer; + + private boolean drmResourcesAcquired; + private DecoderCounters decoderCounters; + private Format inputFormat; + private int encoderDelay; + private int encoderPadding; + private SimpleDecoder decoder; + private DecoderInputBuffer inputBuffer; + private SimpleOutputBuffer outputBuffer; + @Nullable private DrmSession decoderDrmSession; + @Nullable private DrmSession sourceDrmSession; + + @ReinitializationState private int decoderReinitializationState; + private boolean decoderReceivedBuffers; + private boolean audioTrackNeedsConfigure; + + private long currentPositionUs; + private boolean allowFirstBufferPositionDiscontinuity; + private boolean allowPositionDiscontinuity; + private boolean inputStreamEnded; + private boolean outputStreamEnded; + private boolean waitingForKeys; + + public SimpleDecoderAudioRenderer() { + this(/* eventHandler= */ null, /* eventListener= */ null); + } + + /** + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param audioProcessors Optional {@link AudioProcessor}s that will process audio before output. + */ + public SimpleDecoderAudioRenderer( + @Nullable Handler eventHandler, + @Nullable AudioRendererEventListener eventListener, + AudioProcessor... audioProcessors) { + this( + eventHandler, + eventListener, + /* audioCapabilities= */ null, + /* drmSessionManager= */ null, + /* playClearSamplesWithoutKeys= */ false, + audioProcessors); + } + + /** + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param audioCapabilities The audio capabilities for playback on this device. May be null if the + * default capabilities (no encoded audio passthrough support) should be assumed. + */ + public SimpleDecoderAudioRenderer( + @Nullable Handler eventHandler, + @Nullable AudioRendererEventListener eventListener, + @Nullable AudioCapabilities audioCapabilities) { + this( + eventHandler, + eventListener, + audioCapabilities, + /* drmSessionManager= */ null, + /* playClearSamplesWithoutKeys= */ false); + } + + /** + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param audioCapabilities The audio capabilities for playback on this device. May be null if the + * default capabilities (no encoded audio passthrough support) should be assumed. + * @param drmSessionManager For use with encrypted media. May be null if support for encrypted + * media is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + * @param audioProcessors Optional {@link AudioProcessor}s that will process audio before output. + */ + public SimpleDecoderAudioRenderer( + @Nullable Handler eventHandler, + @Nullable AudioRendererEventListener eventListener, + @Nullable AudioCapabilities audioCapabilities, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + AudioProcessor... audioProcessors) { + this(eventHandler, eventListener, drmSessionManager, + playClearSamplesWithoutKeys, new DefaultAudioSink(audioCapabilities, audioProcessors)); + } + + /** + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param drmSessionManager For use with encrypted media. May be null if support for encrypted + * media is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + * @param audioSink The sink to which audio will be output. + */ + public SimpleDecoderAudioRenderer( + @Nullable Handler eventHandler, + @Nullable AudioRendererEventListener eventListener, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + AudioSink audioSink) { + super(C.TRACK_TYPE_AUDIO); + this.drmSessionManager = drmSessionManager; + this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys; + eventDispatcher = new EventDispatcher(eventHandler, eventListener); + this.audioSink = audioSink; + audioSink.setListener(new AudioSinkListener()); + flagsOnlyBuffer = DecoderInputBuffer.newFlagsOnlyInstance(); + decoderReinitializationState = REINITIALIZATION_STATE_NONE; + audioTrackNeedsConfigure = true; + } + + @Override + @Nullable + public MediaClock getMediaClock() { + return this; + } + + @Override + @Capabilities + public final int supportsFormat(Format format) { + if (!MimeTypes.isAudio(format.sampleMimeType)) { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_TYPE); + } + @FormatSupport int formatSupport = supportsFormatInternal(drmSessionManager, format); + if (formatSupport <= FORMAT_UNSUPPORTED_DRM) { + return RendererCapabilities.create(formatSupport); + } + @TunnelingSupport + int tunnelingSupport = Util.SDK_INT >= 21 ? TUNNELING_SUPPORTED : TUNNELING_NOT_SUPPORTED; + return RendererCapabilities.create(formatSupport, ADAPTIVE_NOT_SEAMLESS, tunnelingSupport); + } + + /** + * Returns the {@link FormatSupport} for the given {@link Format}. + * + * @param drmSessionManager The renderer's {@link DrmSessionManager}. + * @param format The format, which has an audio {@link Format#sampleMimeType}. + * @return The {@link FormatSupport} for this {@link Format}. + */ + @FormatSupport + protected abstract int supportsFormatInternal( + @Nullable DrmSessionManager drmSessionManager, Format format); + + /** + * Returns whether the sink supports the audio format. + * + * @see AudioSink#supportsOutput(int, int) + */ + protected final boolean supportsOutput(int channelCount, @C.Encoding int encoding) { + return audioSink.supportsOutput(channelCount, encoding); + } + + @Override + public void render(long positionUs, long elapsedRealtimeUs) throws ExoPlaybackException { + if (outputStreamEnded) { + try { + audioSink.playToEndOfStream(); + } catch (AudioSink.WriteException e) { + throw createRendererException(e, inputFormat); + } + return; + } + + // Try and read a format if we don't have one already. + if (inputFormat == null) { + // We don't have a format yet, so try and read one. + FormatHolder formatHolder = getFormatHolder(); + flagsOnlyBuffer.clear(); + int result = readSource(formatHolder, flagsOnlyBuffer, true); + if (result == C.RESULT_FORMAT_READ) { + onInputFormatChanged(formatHolder); + } else if (result == C.RESULT_BUFFER_READ) { + // End of stream read having not read a format. + Assertions.checkState(flagsOnlyBuffer.isEndOfStream()); + inputStreamEnded = true; + processEndOfStream(); + return; + } else { + // We still don't have a format and can't make progress without one. + return; + } + } + + // If we don't have a decoder yet, we need to instantiate one. + maybeInitDecoder(); + + if (decoder != null) { + try { + // Rendering loop. + TraceUtil.beginSection("drainAndFeed"); + while (drainOutputBuffer()) {} + while (feedInputBuffer()) {} + TraceUtil.endSection(); + } catch (AudioDecoderException | AudioSink.ConfigurationException + | AudioSink.InitializationException | AudioSink.WriteException e) { + throw createRendererException(e, inputFormat); + } + decoderCounters.ensureUpdated(); + } + } + + /** + * Called when the audio session id becomes known. The default implementation is a no-op. One + * reason for overriding this method would be to instantiate and enable a {@link Virtualizer} in + * order to spatialize the audio channels. For this use case, any {@link Virtualizer} instances + * should be released in {@link #onDisabled()} (if not before). + * + * @see AudioSink.Listener#onAudioSessionId(int) + */ + protected void onAudioSessionId(int audioSessionId) { + // Do nothing. + } + + /** + * @see AudioSink.Listener#onPositionDiscontinuity() + */ + protected void onAudioTrackPositionDiscontinuity() { + // Do nothing. + } + + /** + * @see AudioSink.Listener#onUnderrun(int, long, long) + */ + protected void onAudioTrackUnderrun(int bufferSize, long bufferSizeMs, + long elapsedSinceLastFeedMs) { + // Do nothing. + } + + /** + * Creates a decoder for the given format. + * + * @param format The format for which a decoder is required. + * @param mediaCrypto The {@link ExoMediaCrypto} object required for decoding encrypted content. + * Maybe null and can be ignored if decoder does not handle encrypted content. + * @return The decoder. + * @throws AudioDecoderException If an error occurred creating a suitable decoder. + */ + protected abstract SimpleDecoder< + DecoderInputBuffer, ? extends SimpleOutputBuffer, ? extends AudioDecoderException> + createDecoder(Format format, @Nullable ExoMediaCrypto mediaCrypto) + throws AudioDecoderException; + + /** + * Returns the format of audio buffers output by the decoder. Will not be called until the first + * output buffer has been dequeued, so the decoder may use input data to determine the format. + */ + protected abstract Format getOutputFormat(); + + /** + * Returns whether the existing decoder can be kept for a new format. + * + * @param oldFormat The previous format. + * @param newFormat The new format. + * @return True if the existing decoder can be kept. + */ + protected boolean canKeepCodec(Format oldFormat, Format newFormat) { + return false; + } + + private boolean drainOutputBuffer() throws ExoPlaybackException, AudioDecoderException, + AudioSink.ConfigurationException, AudioSink.InitializationException, + AudioSink.WriteException { + if (outputBuffer == null) { + outputBuffer = decoder.dequeueOutputBuffer(); + if (outputBuffer == null) { + return false; + } + if (outputBuffer.skippedOutputBufferCount > 0) { + decoderCounters.skippedOutputBufferCount += outputBuffer.skippedOutputBufferCount; + audioSink.handleDiscontinuity(); + } + } + + if (outputBuffer.isEndOfStream()) { + if (decoderReinitializationState == REINITIALIZATION_STATE_WAIT_END_OF_STREAM) { + // We're waiting to re-initialize the decoder, and have now processed all final buffers. + releaseDecoder(); + maybeInitDecoder(); + // The audio track may need to be recreated once the new output format is known. + audioTrackNeedsConfigure = true; + } else { + outputBuffer.release(); + outputBuffer = null; + processEndOfStream(); + } + return false; + } + + if (audioTrackNeedsConfigure) { + Format outputFormat = getOutputFormat(); + audioSink.configure(outputFormat.pcmEncoding, outputFormat.channelCount, + outputFormat.sampleRate, 0, null, encoderDelay, encoderPadding); + audioTrackNeedsConfigure = false; + } + + if (audioSink.handleBuffer(outputBuffer.data, outputBuffer.timeUs)) { + decoderCounters.renderedOutputBufferCount++; + outputBuffer.release(); + outputBuffer = null; + return true; + } + + return false; + } + + private boolean feedInputBuffer() throws AudioDecoderException, ExoPlaybackException { + if (decoder == null || decoderReinitializationState == REINITIALIZATION_STATE_WAIT_END_OF_STREAM + || inputStreamEnded) { + // We need to reinitialize the decoder or the input stream has ended. + return false; + } + + if (inputBuffer == null) { + inputBuffer = decoder.dequeueInputBuffer(); + if (inputBuffer == null) { + return false; + } + } + + if (decoderReinitializationState == REINITIALIZATION_STATE_SIGNAL_END_OF_STREAM) { + inputBuffer.setFlags(C.BUFFER_FLAG_END_OF_STREAM); + decoder.queueInputBuffer(inputBuffer); + inputBuffer = null; + decoderReinitializationState = REINITIALIZATION_STATE_WAIT_END_OF_STREAM; + return false; + } + + int result; + FormatHolder formatHolder = getFormatHolder(); + if (waitingForKeys) { + // We've already read an encrypted sample into buffer, and are waiting for keys. + result = C.RESULT_BUFFER_READ; + } else { + result = readSource(formatHolder, inputBuffer, false); + } + + if (result == C.RESULT_NOTHING_READ) { + return false; + } + if (result == C.RESULT_FORMAT_READ) { + onInputFormatChanged(formatHolder); + return true; + } + if (inputBuffer.isEndOfStream()) { + inputStreamEnded = true; + decoder.queueInputBuffer(inputBuffer); + inputBuffer = null; + return false; + } + boolean bufferEncrypted = inputBuffer.isEncrypted(); + waitingForKeys = shouldWaitForKeys(bufferEncrypted); + if (waitingForKeys) { + return false; + } + inputBuffer.flip(); + onQueueInputBuffer(inputBuffer); + decoder.queueInputBuffer(inputBuffer); + decoderReceivedBuffers = true; + decoderCounters.inputBufferCount++; + inputBuffer = null; + return true; + } + + private boolean shouldWaitForKeys(boolean bufferEncrypted) throws ExoPlaybackException { + if (decoderDrmSession == null + || (!bufferEncrypted + && (playClearSamplesWithoutKeys || decoderDrmSession.playClearSamplesWithoutKeys()))) { + return false; + } + @DrmSession.State int drmSessionState = decoderDrmSession.getState(); + if (drmSessionState == DrmSession.STATE_ERROR) { + throw createRendererException(decoderDrmSession.getError(), inputFormat); + } + return drmSessionState != DrmSession.STATE_OPENED_WITH_KEYS; + } + + private void processEndOfStream() throws ExoPlaybackException { + outputStreamEnded = true; + try { + audioSink.playToEndOfStream(); + } catch (AudioSink.WriteException e) { + // TODO(internal: b/145658993) Use outputFormat for the call from drainOutputBuffer. + throw createRendererException(e, inputFormat); + } + } + + private void flushDecoder() throws ExoPlaybackException { + waitingForKeys = false; + if (decoderReinitializationState != REINITIALIZATION_STATE_NONE) { + releaseDecoder(); + maybeInitDecoder(); + } else { + inputBuffer = null; + if (outputBuffer != null) { + outputBuffer.release(); + outputBuffer = null; + } + decoder.flush(); + decoderReceivedBuffers = false; + } + } + + @Override + public boolean isEnded() { + return outputStreamEnded && audioSink.isEnded(); + } + + @Override + public boolean isReady() { + return audioSink.hasPendingData() + || (inputFormat != null && !waitingForKeys && (isSourceReady() || outputBuffer != null)); + } + + @Override + public long getPositionUs() { + if (getState() == STATE_STARTED) { + updateCurrentPosition(); + } + return currentPositionUs; + } + + @Override + public void setPlaybackParameters(PlaybackParameters playbackParameters) { + audioSink.setPlaybackParameters(playbackParameters); + } + + @Override + public PlaybackParameters getPlaybackParameters() { + return audioSink.getPlaybackParameters(); + } + + @Override + protected void onEnabled(boolean joining) throws ExoPlaybackException { + if (drmSessionManager != null && !drmResourcesAcquired) { + drmResourcesAcquired = true; + drmSessionManager.prepare(); + } + decoderCounters = new DecoderCounters(); + eventDispatcher.enabled(decoderCounters); + int tunnelingAudioSessionId = getConfiguration().tunnelingAudioSessionId; + if (tunnelingAudioSessionId != C.AUDIO_SESSION_ID_UNSET) { + audioSink.enableTunnelingV21(tunnelingAudioSessionId); + } else { + audioSink.disableTunneling(); + } + } + + @Override + protected void onPositionReset(long positionUs, boolean joining) throws ExoPlaybackException { + audioSink.flush(); + currentPositionUs = positionUs; + allowFirstBufferPositionDiscontinuity = true; + allowPositionDiscontinuity = true; + inputStreamEnded = false; + outputStreamEnded = false; + if (decoder != null) { + flushDecoder(); + } + } + + @Override + protected void onStarted() { + audioSink.play(); + } + + @Override + protected void onStopped() { + updateCurrentPosition(); + audioSink.pause(); + } + + @Override + protected void onDisabled() { + inputFormat = null; + audioTrackNeedsConfigure = true; + waitingForKeys = false; + try { + setSourceDrmSession(null); + releaseDecoder(); + audioSink.reset(); + } finally { + eventDispatcher.disabled(decoderCounters); + } + } + + @Override + protected void onReset() { + if (drmSessionManager != null && drmResourcesAcquired) { + drmResourcesAcquired = false; + drmSessionManager.release(); + } + } + + @Override + public void handleMessage(int messageType, @Nullable Object message) throws ExoPlaybackException { + switch (messageType) { + case C.MSG_SET_VOLUME: + audioSink.setVolume((Float) message); + break; + case C.MSG_SET_AUDIO_ATTRIBUTES: + AudioAttributes audioAttributes = (AudioAttributes) message; + audioSink.setAudioAttributes(audioAttributes); + break; + case C.MSG_SET_AUX_EFFECT_INFO: + AuxEffectInfo auxEffectInfo = (AuxEffectInfo) message; + audioSink.setAuxEffectInfo(auxEffectInfo); + break; + default: + super.handleMessage(messageType, message); + break; + } + } + + private void maybeInitDecoder() throws ExoPlaybackException { + if (decoder != null) { + return; + } + + setDecoderDrmSession(sourceDrmSession); + + ExoMediaCrypto mediaCrypto = null; + if (decoderDrmSession != null) { + mediaCrypto = decoderDrmSession.getMediaCrypto(); + if (mediaCrypto == null) { + DrmSessionException drmError = decoderDrmSession.getError(); + if (drmError != null) { + // Continue for now. We may be able to avoid failure if the session recovers, or if a new + // input format causes the session to be replaced before it's used. + } else { + // The drm session isn't open yet. + return; + } + } + } + + try { + long codecInitializingTimestamp = SystemClock.elapsedRealtime(); + TraceUtil.beginSection("createAudioDecoder"); + decoder = createDecoder(inputFormat, mediaCrypto); + TraceUtil.endSection(); + long codecInitializedTimestamp = SystemClock.elapsedRealtime(); + eventDispatcher.decoderInitialized(decoder.getName(), codecInitializedTimestamp, + codecInitializedTimestamp - codecInitializingTimestamp); + decoderCounters.decoderInitCount++; + } catch (AudioDecoderException e) { + throw createRendererException(e, inputFormat); + } + } + + private void releaseDecoder() { + inputBuffer = null; + outputBuffer = null; + decoderReinitializationState = REINITIALIZATION_STATE_NONE; + decoderReceivedBuffers = false; + if (decoder != null) { + decoder.release(); + decoder = null; + decoderCounters.decoderReleaseCount++; + } + setDecoderDrmSession(null); + } + + private void setSourceDrmSession(@Nullable DrmSession session) { + DrmSession.replaceSession(sourceDrmSession, session); + sourceDrmSession = session; + } + + private void setDecoderDrmSession(@Nullable DrmSession session) { + DrmSession.replaceSession(decoderDrmSession, session); + decoderDrmSession = session; + } + + @SuppressWarnings("unchecked") + private void onInputFormatChanged(FormatHolder formatHolder) throws ExoPlaybackException { + Format newFormat = Assertions.checkNotNull(formatHolder.format); + if (formatHolder.includesDrmSession) { + setSourceDrmSession((DrmSession) formatHolder.drmSession); + } else { + sourceDrmSession = + getUpdatedSourceDrmSession(inputFormat, newFormat, drmSessionManager, sourceDrmSession); + } + Format oldFormat = inputFormat; + inputFormat = newFormat; + + if (!canKeepCodec(oldFormat, inputFormat)) { + if (decoderReceivedBuffers) { + // Signal end of stream and wait for any final output buffers before re-initialization. + decoderReinitializationState = REINITIALIZATION_STATE_SIGNAL_END_OF_STREAM; + } else { + // There aren't any final output buffers, so release the decoder immediately. + releaseDecoder(); + maybeInitDecoder(); + audioTrackNeedsConfigure = true; + } + } + + encoderDelay = inputFormat.encoderDelay; + encoderPadding = inputFormat.encoderPadding; + + eventDispatcher.inputFormatChanged(inputFormat); + } + + private void onQueueInputBuffer(DecoderInputBuffer buffer) { + if (allowFirstBufferPositionDiscontinuity && !buffer.isDecodeOnly()) { + // TODO: Remove this hack once we have a proper fix for [Internal: b/71876314]. + // Allow the position to jump if the first presentable input buffer has a timestamp that + // differs significantly from what was expected. + if (Math.abs(buffer.timeUs - currentPositionUs) > 500000) { + currentPositionUs = buffer.timeUs; + } + allowFirstBufferPositionDiscontinuity = false; + } + } + + private void updateCurrentPosition() { + long newCurrentPositionUs = audioSink.getCurrentPositionUs(isEnded()); + if (newCurrentPositionUs != AudioSink.CURRENT_POSITION_NOT_SET) { + currentPositionUs = + allowPositionDiscontinuity + ? newCurrentPositionUs + : Math.max(currentPositionUs, newCurrentPositionUs); + allowPositionDiscontinuity = false; + } + } + + private final class AudioSinkListener implements AudioSink.Listener { + + @Override + public void onAudioSessionId(int audioSessionId) { + eventDispatcher.audioSessionId(audioSessionId); + SimpleDecoderAudioRenderer.this.onAudioSessionId(audioSessionId); + } + + @Override + public void onPositionDiscontinuity() { + onAudioTrackPositionDiscontinuity(); + // We are out of sync so allow currentPositionUs to jump backwards. + SimpleDecoderAudioRenderer.this.allowPositionDiscontinuity = true; + } + + @Override + public void onUnderrun(int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs) { + eventDispatcher.audioTrackUnderrun(bufferSize, bufferSizeMs, elapsedSinceLastFeedMs); + onAudioTrackUnderrun(bufferSize, bufferSizeMs, elapsedSinceLastFeedMs); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Sonic.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Sonic.java new file mode 100644 index 0000000000..1a0dad4b45 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/Sonic.java @@ -0,0 +1,506 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * Copyright (C) 2010 Bill Cox, Sonic Library + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.nio.ShortBuffer; +import java.util.Arrays; + +/** + * Sonic audio stream processor for time/pitch stretching. + *

+ * Based on https://github.com/waywardgeek/sonic. + */ +/* package */ final class Sonic { + + private static final int MINIMUM_PITCH = 65; + private static final int MAXIMUM_PITCH = 400; + private static final int AMDF_FREQUENCY = 4000; + private static final int BYTES_PER_SAMPLE = 2; + + private final int inputSampleRateHz; + private final int channelCount; + private final float speed; + private final float pitch; + private final float rate; + private final int minPeriod; + private final int maxPeriod; + private final int maxRequiredFrameCount; + private final short[] downSampleBuffer; + + private short[] inputBuffer; + private int inputFrameCount; + private short[] outputBuffer; + private int outputFrameCount; + private short[] pitchBuffer; + private int pitchFrameCount; + private int oldRatePosition; + private int newRatePosition; + private int remainingInputToCopyFrameCount; + private int prevPeriod; + private int prevMinDiff; + private int minDiff; + private int maxDiff; + + /** + * Creates a new Sonic audio stream processor. + * + * @param inputSampleRateHz The sample rate of input audio, in hertz. + * @param channelCount The number of channels in the input audio. + * @param speed The speedup factor for output audio. + * @param pitch The pitch factor for output audio. + * @param outputSampleRateHz The sample rate for output audio, in hertz. + */ + public Sonic( + int inputSampleRateHz, int channelCount, float speed, float pitch, int outputSampleRateHz) { + this.inputSampleRateHz = inputSampleRateHz; + this.channelCount = channelCount; + this.speed = speed; + this.pitch = pitch; + rate = (float) inputSampleRateHz / outputSampleRateHz; + minPeriod = inputSampleRateHz / MAXIMUM_PITCH; + maxPeriod = inputSampleRateHz / MINIMUM_PITCH; + maxRequiredFrameCount = 2 * maxPeriod; + downSampleBuffer = new short[maxRequiredFrameCount]; + inputBuffer = new short[maxRequiredFrameCount * channelCount]; + outputBuffer = new short[maxRequiredFrameCount * channelCount]; + pitchBuffer = new short[maxRequiredFrameCount * channelCount]; + } + + /** + * Queues remaining data from {@code buffer}, and advances its position by the number of bytes + * consumed. + * + * @param buffer A {@link ShortBuffer} containing input data between its position and limit. + */ + public void queueInput(ShortBuffer buffer) { + int framesToWrite = buffer.remaining() / channelCount; + int bytesToWrite = framesToWrite * channelCount * 2; + inputBuffer = ensureSpaceForAdditionalFrames(inputBuffer, inputFrameCount, framesToWrite); + buffer.get(inputBuffer, inputFrameCount * channelCount, bytesToWrite / 2); + inputFrameCount += framesToWrite; + processStreamInput(); + } + + /** + * Gets available output, outputting to the start of {@code buffer}. The buffer's position will be + * advanced by the number of bytes written. + * + * @param buffer A {@link ShortBuffer} into which output will be written. + */ + public void getOutput(ShortBuffer buffer) { + int framesToRead = Math.min(buffer.remaining() / channelCount, outputFrameCount); + buffer.put(outputBuffer, 0, framesToRead * channelCount); + outputFrameCount -= framesToRead; + System.arraycopy( + outputBuffer, + framesToRead * channelCount, + outputBuffer, + 0, + outputFrameCount * channelCount); + } + + /** + * Forces generating output using whatever data has been queued already. No extra delay will be + * added to the output, but flushing in the middle of words could introduce distortion. + */ + public void queueEndOfStream() { + int remainingFrameCount = inputFrameCount; + float s = speed / pitch; + float r = rate * pitch; + int expectedOutputFrames = + outputFrameCount + (int) ((remainingFrameCount / s + pitchFrameCount) / r + 0.5f); + + // Add enough silence to flush both input and pitch buffers. + inputBuffer = + ensureSpaceForAdditionalFrames( + inputBuffer, inputFrameCount, remainingFrameCount + 2 * maxRequiredFrameCount); + for (int xSample = 0; xSample < 2 * maxRequiredFrameCount * channelCount; xSample++) { + inputBuffer[remainingFrameCount * channelCount + xSample] = 0; + } + inputFrameCount += 2 * maxRequiredFrameCount; + processStreamInput(); + // Throw away any extra frames we generated due to the silence we added. + if (outputFrameCount > expectedOutputFrames) { + outputFrameCount = expectedOutputFrames; + } + // Empty input and pitch buffers. + inputFrameCount = 0; + remainingInputToCopyFrameCount = 0; + pitchFrameCount = 0; + } + + /** Clears state in preparation for receiving a new stream of input buffers. */ + public void flush() { + inputFrameCount = 0; + outputFrameCount = 0; + pitchFrameCount = 0; + oldRatePosition = 0; + newRatePosition = 0; + remainingInputToCopyFrameCount = 0; + prevPeriod = 0; + prevMinDiff = 0; + minDiff = 0; + maxDiff = 0; + } + + /** Returns the size of output that can be read with {@link #getOutput(ShortBuffer)}, in bytes. */ + public int getOutputSize() { + return outputFrameCount * channelCount * BYTES_PER_SAMPLE; + } + + // Internal methods. + + /** + * Returns {@code buffer} or a copy of it, such that there is enough space in the returned buffer + * to store {@code newFrameCount} additional frames. + * + * @param buffer The buffer. + * @param frameCount The number of frames already in the buffer. + * @param additionalFrameCount The number of additional frames that need to be stored in the + * buffer. + * @return A buffer with enough space for the additional frames. + */ + private short[] ensureSpaceForAdditionalFrames( + short[] buffer, int frameCount, int additionalFrameCount) { + int currentCapacityFrames = buffer.length / channelCount; + if (frameCount + additionalFrameCount <= currentCapacityFrames) { + return buffer; + } else { + int newCapacityFrames = 3 * currentCapacityFrames / 2 + additionalFrameCount; + return Arrays.copyOf(buffer, newCapacityFrames * channelCount); + } + } + + private void removeProcessedInputFrames(int positionFrames) { + int remainingFrames = inputFrameCount - positionFrames; + System.arraycopy( + inputBuffer, positionFrames * channelCount, inputBuffer, 0, remainingFrames * channelCount); + inputFrameCount = remainingFrames; + } + + private void copyToOutput(short[] samples, int positionFrames, int frameCount) { + outputBuffer = ensureSpaceForAdditionalFrames(outputBuffer, outputFrameCount, frameCount); + System.arraycopy( + samples, + positionFrames * channelCount, + outputBuffer, + outputFrameCount * channelCount, + frameCount * channelCount); + outputFrameCount += frameCount; + } + + private int copyInputToOutput(int positionFrames) { + int frameCount = Math.min(maxRequiredFrameCount, remainingInputToCopyFrameCount); + copyToOutput(inputBuffer, positionFrames, frameCount); + remainingInputToCopyFrameCount -= frameCount; + return frameCount; + } + + private void downSampleInput(short[] samples, int position, int skip) { + // If skip is greater than one, average skip samples together and write them to the down-sample + // buffer. If channelCount is greater than one, mix the channels together as we down sample. + int frameCount = maxRequiredFrameCount / skip; + int samplesPerValue = channelCount * skip; + position *= channelCount; + for (int i = 0; i < frameCount; i++) { + int value = 0; + for (int j = 0; j < samplesPerValue; j++) { + value += samples[position + i * samplesPerValue + j]; + } + value /= samplesPerValue; + downSampleBuffer[i] = (short) value; + } + } + + private int findPitchPeriodInRange(short[] samples, int position, int minPeriod, int maxPeriod) { + // Find the best frequency match in the range, and given a sample skip multiple. For now, just + // find the pitch of the first channel. + int bestPeriod = 0; + int worstPeriod = 255; + int minDiff = 1; + int maxDiff = 0; + position *= channelCount; + for (int period = minPeriod; period <= maxPeriod; period++) { + int diff = 0; + for (int i = 0; i < period; i++) { + short sVal = samples[position + i]; + short pVal = samples[position + period + i]; + diff += Math.abs(sVal - pVal); + } + // Note that the highest number of samples we add into diff will be less than 256, since we + // skip samples. Thus, diff is a 24 bit number, and we can safely multiply by numSamples + // without overflow. + if (diff * bestPeriod < minDiff * period) { + minDiff = diff; + bestPeriod = period; + } + if (diff * worstPeriod > maxDiff * period) { + maxDiff = diff; + worstPeriod = period; + } + } + this.minDiff = minDiff / bestPeriod; + this.maxDiff = maxDiff / worstPeriod; + return bestPeriod; + } + + /** + * Returns whether the previous pitch period estimate is a better approximation, which can occur + * at the abrupt end of voiced words. + */ + private boolean previousPeriodBetter(int minDiff, int maxDiff) { + if (minDiff == 0 || prevPeriod == 0) { + return false; + } + if (maxDiff > minDiff * 3) { + // Got a reasonable match this period. + return false; + } + if (minDiff * 2 <= prevMinDiff * 3) { + // Mismatch is not that much greater this period. + return false; + } + return true; + } + + private int findPitchPeriod(short[] samples, int position) { + // Find the pitch period. This is a critical step, and we may have to try multiple ways to get a + // good answer. This version uses AMDF. To improve speed, we down sample by an integer factor + // get in the 11 kHz range, and then do it again with a narrower frequency range without down + // sampling. + int period; + int retPeriod; + int skip = inputSampleRateHz > AMDF_FREQUENCY ? inputSampleRateHz / AMDF_FREQUENCY : 1; + if (channelCount == 1 && skip == 1) { + period = findPitchPeriodInRange(samples, position, minPeriod, maxPeriod); + } else { + downSampleInput(samples, position, skip); + period = findPitchPeriodInRange(downSampleBuffer, 0, minPeriod / skip, maxPeriod / skip); + if (skip != 1) { + period *= skip; + int minP = period - (skip * 4); + int maxP = period + (skip * 4); + if (minP < minPeriod) { + minP = minPeriod; + } + if (maxP > maxPeriod) { + maxP = maxPeriod; + } + if (channelCount == 1) { + period = findPitchPeriodInRange(samples, position, minP, maxP); + } else { + downSampleInput(samples, position, 1); + period = findPitchPeriodInRange(downSampleBuffer, 0, minP, maxP); + } + } + } + if (previousPeriodBetter(minDiff, maxDiff)) { + retPeriod = prevPeriod; + } else { + retPeriod = period; + } + prevMinDiff = minDiff; + prevPeriod = period; + return retPeriod; + } + + private void moveNewSamplesToPitchBuffer(int originalOutputFrameCount) { + int frameCount = outputFrameCount - originalOutputFrameCount; + pitchBuffer = ensureSpaceForAdditionalFrames(pitchBuffer, pitchFrameCount, frameCount); + System.arraycopy( + outputBuffer, + originalOutputFrameCount * channelCount, + pitchBuffer, + pitchFrameCount * channelCount, + frameCount * channelCount); + outputFrameCount = originalOutputFrameCount; + pitchFrameCount += frameCount; + } + + private void removePitchFrames(int frameCount) { + if (frameCount == 0) { + return; + } + System.arraycopy( + pitchBuffer, + frameCount * channelCount, + pitchBuffer, + 0, + (pitchFrameCount - frameCount) * channelCount); + pitchFrameCount -= frameCount; + } + + private short interpolate(short[] in, int inPos, int oldSampleRate, int newSampleRate) { + short left = in[inPos]; + short right = in[inPos + channelCount]; + int position = newRatePosition * oldSampleRate; + int leftPosition = oldRatePosition * newSampleRate; + int rightPosition = (oldRatePosition + 1) * newSampleRate; + int ratio = rightPosition - position; + int width = rightPosition - leftPosition; + return (short) ((ratio * left + (width - ratio) * right) / width); + } + + private void adjustRate(float rate, int originalOutputFrameCount) { + if (outputFrameCount == originalOutputFrameCount) { + return; + } + int newSampleRate = (int) (inputSampleRateHz / rate); + int oldSampleRate = inputSampleRateHz; + // Set these values to help with the integer math. + while (newSampleRate > (1 << 14) || oldSampleRate > (1 << 14)) { + newSampleRate /= 2; + oldSampleRate /= 2; + } + moveNewSamplesToPitchBuffer(originalOutputFrameCount); + // Leave at least one pitch sample in the buffer. + for (int position = 0; position < pitchFrameCount - 1; position++) { + while ((oldRatePosition + 1) * newSampleRate > newRatePosition * oldSampleRate) { + outputBuffer = + ensureSpaceForAdditionalFrames( + outputBuffer, outputFrameCount, /* additionalFrameCount= */ 1); + for (int i = 0; i < channelCount; i++) { + outputBuffer[outputFrameCount * channelCount + i] = + interpolate(pitchBuffer, position * channelCount + i, oldSampleRate, newSampleRate); + } + newRatePosition++; + outputFrameCount++; + } + oldRatePosition++; + if (oldRatePosition == oldSampleRate) { + oldRatePosition = 0; + Assertions.checkState(newRatePosition == newSampleRate); + newRatePosition = 0; + } + } + removePitchFrames(pitchFrameCount - 1); + } + + private int skipPitchPeriod(short[] samples, int position, float speed, int period) { + // Skip over a pitch period, and copy period/speed samples to the output. + int newFrameCount; + if (speed >= 2.0f) { + newFrameCount = (int) (period / (speed - 1.0f)); + } else { + newFrameCount = period; + remainingInputToCopyFrameCount = (int) (period * (2.0f - speed) / (speed - 1.0f)); + } + outputBuffer = ensureSpaceForAdditionalFrames(outputBuffer, outputFrameCount, newFrameCount); + overlapAdd( + newFrameCount, + channelCount, + outputBuffer, + outputFrameCount, + samples, + position, + samples, + position + period); + outputFrameCount += newFrameCount; + return newFrameCount; + } + + private int insertPitchPeriod(short[] samples, int position, float speed, int period) { + // Insert a pitch period, and determine how much input to copy directly. + int newFrameCount; + if (speed < 0.5f) { + newFrameCount = (int) (period * speed / (1.0f - speed)); + } else { + newFrameCount = period; + remainingInputToCopyFrameCount = (int) (period * (2.0f * speed - 1.0f) / (1.0f - speed)); + } + outputBuffer = + ensureSpaceForAdditionalFrames(outputBuffer, outputFrameCount, period + newFrameCount); + System.arraycopy( + samples, + position * channelCount, + outputBuffer, + outputFrameCount * channelCount, + period * channelCount); + overlapAdd( + newFrameCount, + channelCount, + outputBuffer, + outputFrameCount + period, + samples, + position + period, + samples, + position); + outputFrameCount += period + newFrameCount; + return newFrameCount; + } + + private void changeSpeed(float speed) { + if (inputFrameCount < maxRequiredFrameCount) { + return; + } + int frameCount = inputFrameCount; + int positionFrames = 0; + do { + if (remainingInputToCopyFrameCount > 0) { + positionFrames += copyInputToOutput(positionFrames); + } else { + int period = findPitchPeriod(inputBuffer, positionFrames); + if (speed > 1.0) { + positionFrames += period + skipPitchPeriod(inputBuffer, positionFrames, speed, period); + } else { + positionFrames += insertPitchPeriod(inputBuffer, positionFrames, speed, period); + } + } + } while (positionFrames + maxRequiredFrameCount <= frameCount); + removeProcessedInputFrames(positionFrames); + } + + private void processStreamInput() { + // Resample as many pitch periods as we have buffered on the input. + int originalOutputFrameCount = outputFrameCount; + float s = speed / pitch; + float r = rate * pitch; + if (s > 1.00001 || s < 0.99999) { + changeSpeed(s); + } else { + copyToOutput(inputBuffer, 0, inputFrameCount); + inputFrameCount = 0; + } + if (r != 1.0f) { + adjustRate(r, originalOutputFrameCount); + } + } + + private static void overlapAdd( + int frameCount, + int channelCount, + short[] out, + int outPosition, + short[] rampDown, + int rampDownPosition, + short[] rampUp, + int rampUpPosition) { + for (int i = 0; i < channelCount; i++) { + int o = outPosition * channelCount + i; + int u = rampUpPosition * channelCount + i; + int d = rampDownPosition * channelCount + i; + for (int t = 0; t < frameCount; t++) { + out[o] = (short) ((rampDown[d] * (frameCount - t) + rampUp[u] * t) / frameCount); + o += channelCount; + d += channelCount; + u += channelCount; + } + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SonicAudioProcessor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SonicAudioProcessor.java new file mode 100644 index 0000000000..88a4d884bf --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/SonicAudioProcessor.java @@ -0,0 +1,277 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.ShortBuffer; + +/** + * An {@link AudioProcessor} that uses the Sonic library to modify audio speed/pitch/sample rate. + */ +public final class SonicAudioProcessor implements AudioProcessor { + + /** + * The maximum allowed playback speed in {@link #setSpeed(float)}. + */ + public static final float MAXIMUM_SPEED = 8.0f; + /** + * The minimum allowed playback speed in {@link #setSpeed(float)}. + */ + public static final float MINIMUM_SPEED = 0.1f; + /** + * The maximum allowed pitch in {@link #setPitch(float)}. + */ + public static final float MAXIMUM_PITCH = 8.0f; + /** + * The minimum allowed pitch in {@link #setPitch(float)}. + */ + public static final float MINIMUM_PITCH = 0.1f; + /** + * Indicates that the output sample rate should be the same as the input. + */ + public static final int SAMPLE_RATE_NO_CHANGE = -1; + + /** + * The threshold below which the difference between two pitch/speed factors is negligible. + */ + private static final float CLOSE_THRESHOLD = 0.01f; + + /** + * The minimum number of output bytes at which the speedup is calculated using the input/output + * byte counts, rather than using the current playback parameters speed. + */ + private static final int MIN_BYTES_FOR_SPEEDUP_CALCULATION = 1024; + + private int pendingOutputSampleRate; + private float speed; + private float pitch; + + private AudioFormat pendingInputAudioFormat; + private AudioFormat pendingOutputAudioFormat; + private AudioFormat inputAudioFormat; + private AudioFormat outputAudioFormat; + + private boolean pendingSonicRecreation; + @Nullable private Sonic sonic; + private ByteBuffer buffer; + private ShortBuffer shortBuffer; + private ByteBuffer outputBuffer; + private long inputBytes; + private long outputBytes; + private boolean inputEnded; + + /** + * Creates a new Sonic audio processor. + */ + public SonicAudioProcessor() { + speed = 1f; + pitch = 1f; + pendingInputAudioFormat = AudioFormat.NOT_SET; + pendingOutputAudioFormat = AudioFormat.NOT_SET; + inputAudioFormat = AudioFormat.NOT_SET; + outputAudioFormat = AudioFormat.NOT_SET; + buffer = EMPTY_BUFFER; + shortBuffer = buffer.asShortBuffer(); + outputBuffer = EMPTY_BUFFER; + pendingOutputSampleRate = SAMPLE_RATE_NO_CHANGE; + } + + /** + * Sets the playback speed. This method may only be called after draining data through the + * processor. The value returned by {@link #isActive()} may change, and the processor must be + * {@link #flush() flushed} before queueing more data. + * + * @param speed The requested new playback speed. + * @return The actual new playback speed. + */ + public float setSpeed(float speed) { + speed = Util.constrainValue(speed, MINIMUM_SPEED, MAXIMUM_SPEED); + if (this.speed != speed) { + this.speed = speed; + pendingSonicRecreation = true; + } + return speed; + } + + /** + * Sets the playback pitch. This method may only be called after draining data through the + * processor. The value returned by {@link #isActive()} may change, and the processor must be + * {@link #flush() flushed} before queueing more data. + * + * @param pitch The requested new pitch. + * @return The actual new pitch. + */ + public float setPitch(float pitch) { + pitch = Util.constrainValue(pitch, MINIMUM_PITCH, MAXIMUM_PITCH); + if (this.pitch != pitch) { + this.pitch = pitch; + pendingSonicRecreation = true; + } + return pitch; + } + + /** + * Sets the sample rate for output audio, in Hertz. Pass {@link #SAMPLE_RATE_NO_CHANGE} to output + * audio at the same sample rate as the input. After calling this method, call {@link + * #configure(AudioFormat)} to configure the processor with the new sample rate. + * + * @param sampleRateHz The sample rate for output audio, in Hertz. + * @see #configure(AudioFormat) + */ + public void setOutputSampleRateHz(int sampleRateHz) { + pendingOutputSampleRate = sampleRateHz; + } + + /** + * Returns the specified duration scaled to take into account the speedup factor of this instance, + * in the same units as {@code duration}. + * + * @param duration The duration to scale taking into account speedup. + * @return The specified duration scaled to take into account speedup, in the same units as + * {@code duration}. + */ + public long scaleDurationForSpeedup(long duration) { + if (outputBytes >= MIN_BYTES_FOR_SPEEDUP_CALCULATION) { + return outputAudioFormat.sampleRate == inputAudioFormat.sampleRate + ? Util.scaleLargeTimestamp(duration, inputBytes, outputBytes) + : Util.scaleLargeTimestamp( + duration, + inputBytes * outputAudioFormat.sampleRate, + outputBytes * inputAudioFormat.sampleRate); + } else { + return (long) ((double) speed * duration); + } + } + + @Override + public AudioFormat configure(AudioFormat inputAudioFormat) throws UnhandledAudioFormatException { + if (inputAudioFormat.encoding != C.ENCODING_PCM_16BIT) { + throw new UnhandledAudioFormatException(inputAudioFormat); + } + int outputSampleRateHz = + pendingOutputSampleRate == SAMPLE_RATE_NO_CHANGE + ? inputAudioFormat.sampleRate + : pendingOutputSampleRate; + pendingInputAudioFormat = inputAudioFormat; + pendingOutputAudioFormat = + new AudioFormat(outputSampleRateHz, inputAudioFormat.channelCount, C.ENCODING_PCM_16BIT); + pendingSonicRecreation = true; + return pendingOutputAudioFormat; + } + + @Override + public boolean isActive() { + return pendingOutputAudioFormat.sampleRate != Format.NO_VALUE + && (Math.abs(speed - 1f) >= CLOSE_THRESHOLD + || Math.abs(pitch - 1f) >= CLOSE_THRESHOLD + || pendingOutputAudioFormat.sampleRate != pendingInputAudioFormat.sampleRate); + } + + @Override + public void queueInput(ByteBuffer inputBuffer) { + Sonic sonic = Assertions.checkNotNull(this.sonic); + if (inputBuffer.hasRemaining()) { + ShortBuffer shortBuffer = inputBuffer.asShortBuffer(); + int inputSize = inputBuffer.remaining(); + inputBytes += inputSize; + sonic.queueInput(shortBuffer); + inputBuffer.position(inputBuffer.position() + inputSize); + } + int outputSize = sonic.getOutputSize(); + if (outputSize > 0) { + if (buffer.capacity() < outputSize) { + buffer = ByteBuffer.allocateDirect(outputSize).order(ByteOrder.nativeOrder()); + shortBuffer = buffer.asShortBuffer(); + } else { + buffer.clear(); + shortBuffer.clear(); + } + sonic.getOutput(shortBuffer); + outputBytes += outputSize; + buffer.limit(outputSize); + outputBuffer = buffer; + } + } + + @Override + public void queueEndOfStream() { + if (sonic != null) { + sonic.queueEndOfStream(); + } + inputEnded = true; + } + + @Override + public ByteBuffer getOutput() { + ByteBuffer outputBuffer = this.outputBuffer; + this.outputBuffer = EMPTY_BUFFER; + return outputBuffer; + } + + @Override + public boolean isEnded() { + return inputEnded && (sonic == null || sonic.getOutputSize() == 0); + } + + @Override + public void flush() { + if (isActive()) { + inputAudioFormat = pendingInputAudioFormat; + outputAudioFormat = pendingOutputAudioFormat; + if (pendingSonicRecreation) { + sonic = + new Sonic( + inputAudioFormat.sampleRate, + inputAudioFormat.channelCount, + speed, + pitch, + outputAudioFormat.sampleRate); + } else if (sonic != null) { + sonic.flush(); + } + } + outputBuffer = EMPTY_BUFFER; + inputBytes = 0; + outputBytes = 0; + inputEnded = false; + } + + @Override + public void reset() { + speed = 1f; + pitch = 1f; + pendingInputAudioFormat = AudioFormat.NOT_SET; + pendingOutputAudioFormat = AudioFormat.NOT_SET; + inputAudioFormat = AudioFormat.NOT_SET; + outputAudioFormat = AudioFormat.NOT_SET; + buffer = EMPTY_BUFFER; + shortBuffer = buffer.asShortBuffer(); + outputBuffer = EMPTY_BUFFER; + pendingOutputSampleRate = SAMPLE_RATE_NO_CHANGE; + pendingSonicRecreation = false; + sonic = null; + inputBytes = 0; + outputBytes = 0; + inputEnded = false; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/TeeAudioProcessor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/TeeAudioProcessor.java new file mode 100644 index 0000000000..42f151c5be --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/TeeAudioProcessor.java @@ -0,0 +1,235 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.io.RandomAccessFile; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; + +/** + * Audio processor that outputs its input unmodified and also outputs its input to a given sink. + * This is intended to be used for diagnostics and debugging. + * + *

This audio processor can be inserted into the audio processor chain to access audio data + * before/after particular processing steps have been applied. For example, to get audio output + * after playback speed adjustment and silence skipping have been applied it is necessary to pass a + * custom {@link org.mozilla.thirdparty.com.google.android.exoplayer2audio.DefaultAudioSink.AudioProcessorChain} when + * creating the audio sink, and include this audio processor after all other audio processors. + */ +public final class TeeAudioProcessor extends BaseAudioProcessor { + + /** A sink for audio buffers handled by the audio processor. */ + public interface AudioBufferSink { + + /** Called when the audio processor is flushed with a format of subsequent input. */ + void flush(int sampleRateHz, int channelCount, @C.PcmEncoding int encoding); + + /** + * Called when data is written to the audio processor. + * + * @param buffer A read-only buffer containing input which the audio processor will handle. + */ + void handleBuffer(ByteBuffer buffer); + } + + private final AudioBufferSink audioBufferSink; + + /** + * Creates a new tee audio processor, sending incoming data to the given {@link AudioBufferSink}. + * + * @param audioBufferSink The audio buffer sink that will receive input queued to this audio + * processor. + */ + public TeeAudioProcessor(AudioBufferSink audioBufferSink) { + this.audioBufferSink = Assertions.checkNotNull(audioBufferSink); + } + + @Override + public AudioFormat onConfigure(AudioFormat inputAudioFormat) { + // This processor is always active (if passed to the sink) and outputs its input. + return inputAudioFormat; + } + + @Override + public void queueInput(ByteBuffer inputBuffer) { + int remaining = inputBuffer.remaining(); + if (remaining == 0) { + return; + } + audioBufferSink.handleBuffer(inputBuffer.asReadOnlyBuffer()); + replaceOutputBuffer(remaining).put(inputBuffer).flip(); + } + + @Override + protected void onQueueEndOfStream() { + flushSinkIfActive(); + } + + @Override + protected void onReset() { + flushSinkIfActive(); + } + + private void flushSinkIfActive() { + if (isActive()) { + audioBufferSink.flush( + inputAudioFormat.sampleRate, inputAudioFormat.channelCount, inputAudioFormat.encoding); + } + } + + /** + * A sink for audio buffers that writes output audio as .wav files with a given path prefix. When + * new audio data is handled after flushing the audio processor, a counter is incremented and its + * value is appended to the output file name. + * + *

Note: if writing to external storage it's necessary to grant the {@code + * WRITE_EXTERNAL_STORAGE} permission. + */ + public static final class WavFileAudioBufferSink implements AudioBufferSink { + + private static final String TAG = "WaveFileAudioBufferSink"; + + private static final int FILE_SIZE_MINUS_8_OFFSET = 4; + private static final int FILE_SIZE_MINUS_44_OFFSET = 40; + private static final int HEADER_LENGTH = 44; + + private final String outputFileNamePrefix; + private final byte[] scratchBuffer; + private final ByteBuffer scratchByteBuffer; + + private int sampleRateHz; + private int channelCount; + @C.PcmEncoding private int encoding; + @Nullable private RandomAccessFile randomAccessFile; + private int counter; + private int bytesWritten; + + /** + * Creates a new audio buffer sink that writes to .wav files with the given prefix. + * + * @param outputFileNamePrefix The prefix for output files. + */ + public WavFileAudioBufferSink(String outputFileNamePrefix) { + this.outputFileNamePrefix = outputFileNamePrefix; + scratchBuffer = new byte[1024]; + scratchByteBuffer = ByteBuffer.wrap(scratchBuffer).order(ByteOrder.LITTLE_ENDIAN); + } + + @Override + public void flush(int sampleRateHz, int channelCount, @C.PcmEncoding int encoding) { + try { + reset(); + } catch (IOException e) { + Log.e(TAG, "Error resetting", e); + } + this.sampleRateHz = sampleRateHz; + this.channelCount = channelCount; + this.encoding = encoding; + } + + @Override + public void handleBuffer(ByteBuffer buffer) { + try { + maybePrepareFile(); + writeBuffer(buffer); + } catch (IOException e) { + Log.e(TAG, "Error writing data", e); + } + } + + private void maybePrepareFile() throws IOException { + if (randomAccessFile != null) { + return; + } + RandomAccessFile randomAccessFile = new RandomAccessFile(getNextOutputFileName(), "rw"); + writeFileHeader(randomAccessFile); + this.randomAccessFile = randomAccessFile; + bytesWritten = HEADER_LENGTH; + } + + private void writeFileHeader(RandomAccessFile randomAccessFile) throws IOException { + // Write the start of the header as big endian data. + randomAccessFile.writeInt(WavUtil.RIFF_FOURCC); + randomAccessFile.writeInt(-1); + randomAccessFile.writeInt(WavUtil.WAVE_FOURCC); + randomAccessFile.writeInt(WavUtil.FMT_FOURCC); + + // Write the rest of the header as little endian data. + scratchByteBuffer.clear(); + scratchByteBuffer.putInt(16); + scratchByteBuffer.putShort((short) WavUtil.getTypeForPcmEncoding(encoding)); + scratchByteBuffer.putShort((short) channelCount); + scratchByteBuffer.putInt(sampleRateHz); + int bytesPerSample = Util.getPcmFrameSize(encoding, channelCount); + scratchByteBuffer.putInt(bytesPerSample * sampleRateHz); + scratchByteBuffer.putShort((short) bytesPerSample); + scratchByteBuffer.putShort((short) (8 * bytesPerSample / channelCount)); + randomAccessFile.write(scratchBuffer, 0, scratchByteBuffer.position()); + + // Write the start of the data chunk as big endian data. + randomAccessFile.writeInt(WavUtil.DATA_FOURCC); + randomAccessFile.writeInt(-1); + } + + private void writeBuffer(ByteBuffer buffer) throws IOException { + RandomAccessFile randomAccessFile = Assertions.checkNotNull(this.randomAccessFile); + while (buffer.hasRemaining()) { + int bytesToWrite = Math.min(buffer.remaining(), scratchBuffer.length); + buffer.get(scratchBuffer, 0, bytesToWrite); + randomAccessFile.write(scratchBuffer, 0, bytesToWrite); + bytesWritten += bytesToWrite; + } + } + + private void reset() throws IOException { + RandomAccessFile randomAccessFile = this.randomAccessFile; + if (randomAccessFile == null) { + return; + } + + try { + scratchByteBuffer.clear(); + scratchByteBuffer.putInt(bytesWritten - 8); + randomAccessFile.seek(FILE_SIZE_MINUS_8_OFFSET); + randomAccessFile.write(scratchBuffer, 0, 4); + + scratchByteBuffer.clear(); + scratchByteBuffer.putInt(bytesWritten - 44); + randomAccessFile.seek(FILE_SIZE_MINUS_44_OFFSET); + randomAccessFile.write(scratchBuffer, 0, 4); + } catch (IOException e) { + // The file may still be playable, so just log a warning. + Log.w(TAG, "Error updating file size", e); + } + + try { + randomAccessFile.close(); + } finally { + this.randomAccessFile = null; + } + } + + private String getNextOutputFileName() { + return Util.formatInvariant("%s-%04d.wav", outputFileNamePrefix, counter++); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/TrimmingAudioProcessor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/TrimmingAudioProcessor.java new file mode 100644 index 0000000000..1326cf63ee --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/TrimmingAudioProcessor.java @@ -0,0 +1,178 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.nio.ByteBuffer; + +/** Audio processor for trimming samples from the start/end of data. */ +/* package */ final class TrimmingAudioProcessor extends BaseAudioProcessor { + + @C.PcmEncoding private static final int OUTPUT_ENCODING = C.ENCODING_PCM_16BIT; + + private int trimStartFrames; + private int trimEndFrames; + private boolean reconfigurationPending; + + private int pendingTrimStartBytes; + private byte[] endBuffer; + private int endBufferSize; + private long trimmedFrameCount; + + /** Creates a new audio processor for trimming samples from the start/end of data. */ + public TrimmingAudioProcessor() { + endBuffer = Util.EMPTY_BYTE_ARRAY; + } + + /** + * Sets the number of audio frames to trim from the start and end of audio passed to this + * processor. After calling this method, call {@link #configure(AudioFormat)} to apply the new + * trimming frame counts. + * + * @param trimStartFrames The number of audio frames to trim from the start of audio. + * @param trimEndFrames The number of audio frames to trim from the end of audio. + * @see AudioSink#configure(int, int, int, int, int[], int, int) + */ + public void setTrimFrameCount(int trimStartFrames, int trimEndFrames) { + this.trimStartFrames = trimStartFrames; + this.trimEndFrames = trimEndFrames; + } + + /** Sets the trimmed frame count returned by {@link #getTrimmedFrameCount()} to zero. */ + public void resetTrimmedFrameCount() { + trimmedFrameCount = 0; + } + + /** + * Returns the number of audio frames trimmed since the last call to {@link + * #resetTrimmedFrameCount()}. + */ + public long getTrimmedFrameCount() { + return trimmedFrameCount; + } + + @Override + public AudioFormat onConfigure(AudioFormat inputAudioFormat) + throws UnhandledAudioFormatException { + if (inputAudioFormat.encoding != OUTPUT_ENCODING) { + throw new UnhandledAudioFormatException(inputAudioFormat); + } + reconfigurationPending = true; + return trimStartFrames != 0 || trimEndFrames != 0 ? inputAudioFormat : AudioFormat.NOT_SET; + } + + @Override + public void queueInput(ByteBuffer inputBuffer) { + int position = inputBuffer.position(); + int limit = inputBuffer.limit(); + int remaining = limit - position; + + if (remaining == 0) { + return; + } + + // Trim any pending start bytes from the input buffer. + int trimBytes = Math.min(remaining, pendingTrimStartBytes); + trimmedFrameCount += trimBytes / inputAudioFormat.bytesPerFrame; + pendingTrimStartBytes -= trimBytes; + inputBuffer.position(position + trimBytes); + if (pendingTrimStartBytes > 0) { + // Nothing to output yet. + return; + } + remaining -= trimBytes; + + // endBuffer must be kept as full as possible, so that we trim the right amount of media if we + // don't receive any more input. After taking into account the number of bytes needed to keep + // endBuffer as full as possible, the output should be any surplus bytes currently in endBuffer + // followed by any surplus bytes in the new inputBuffer. + int remainingBytesToOutput = endBufferSize + remaining - endBuffer.length; + ByteBuffer buffer = replaceOutputBuffer(remainingBytesToOutput); + + // Output from endBuffer. + int endBufferBytesToOutput = Util.constrainValue(remainingBytesToOutput, 0, endBufferSize); + buffer.put(endBuffer, 0, endBufferBytesToOutput); + remainingBytesToOutput -= endBufferBytesToOutput; + + // Output from inputBuffer, restoring its limit afterwards. + int inputBufferBytesToOutput = Util.constrainValue(remainingBytesToOutput, 0, remaining); + inputBuffer.limit(inputBuffer.position() + inputBufferBytesToOutput); + buffer.put(inputBuffer); + inputBuffer.limit(limit); + remaining -= inputBufferBytesToOutput; + + // Compact endBuffer, then repopulate it using the new input. + endBufferSize -= endBufferBytesToOutput; + System.arraycopy(endBuffer, endBufferBytesToOutput, endBuffer, 0, endBufferSize); + inputBuffer.get(endBuffer, endBufferSize, remaining); + endBufferSize += remaining; + + buffer.flip(); + } + + @Override + public ByteBuffer getOutput() { + if (super.isEnded() && endBufferSize > 0) { + // Because audio processors may be drained in the middle of the stream we assume that the + // contents of the end buffer need to be output. For gapless transitions, configure will + // always be called, so the end buffer is cleared in onQueueEndOfStream. + replaceOutputBuffer(endBufferSize).put(endBuffer, 0, endBufferSize).flip(); + endBufferSize = 0; + } + return super.getOutput(); + } + + @Override + public boolean isEnded() { + return super.isEnded() && endBufferSize == 0; + } + + @Override + protected void onQueueEndOfStream() { + if (reconfigurationPending) { + // Trim audio in the end buffer. + if (endBufferSize > 0) { + trimmedFrameCount += endBufferSize / inputAudioFormat.bytesPerFrame; + } + endBufferSize = 0; + } + } + + @Override + protected void onFlush() { + if (reconfigurationPending) { + // This is the initial flush after reconfiguration. Prepare to trim bytes from the start/end. + reconfigurationPending = false; + endBuffer = new byte[trimEndFrames * inputAudioFormat.bytesPerFrame]; + pendingTrimStartBytes = trimStartFrames * inputAudioFormat.bytesPerFrame; + } else { + // This is a flush during playback (after the initial flush). We assume this was caused by a + // seek to a non-zero position and clear pending start bytes. This assumption may be wrong (we + // may be seeking to zero), but playing data that should have been trimmed shouldn't be + // noticeable after a seek. Ideally we would check the timestamp of the first input buffer + // queued after flushing to decide whether to trim (see also [Internal: b/77292509]). + pendingTrimStartBytes = 0; + } + endBufferSize = 0; + } + + @Override + protected void onReset() { + endBuffer = Util.EMPTY_BYTE_ARRAY; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/WavUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/WavUtil.java new file mode 100644 index 0000000000..d1245761aa --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/WavUtil.java @@ -0,0 +1,91 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** Utilities for handling WAVE files. */ +public final class WavUtil { + + /** Four character code for "RIFF". */ + public static final int RIFF_FOURCC = 0x52494646; + /** Four character code for "WAVE". */ + public static final int WAVE_FOURCC = 0x57415645; + /** Four character code for "fmt ". */ + public static final int FMT_FOURCC = 0x666d7420; + /** Four character code for "data". */ + public static final int DATA_FOURCC = 0x64617461; + + /** WAVE type value for integer PCM audio data. */ + public static final int TYPE_PCM = 0x0001; + /** WAVE type value for float PCM audio data. */ + public static final int TYPE_FLOAT = 0x0003; + /** WAVE type value for 8-bit ITU-T G.711 A-law audio data. */ + public static final int TYPE_ALAW = 0x0006; + /** WAVE type value for 8-bit ITU-T G.711 mu-law audio data. */ + public static final int TYPE_MLAW = 0x0007; + /** WAVE type value for IMA ADPCM audio data. */ + public static final int TYPE_IMA_ADPCM = 0x0011; + /** WAVE type value for extended WAVE format. */ + public static final int TYPE_WAVE_FORMAT_EXTENSIBLE = 0xFFFE; + + /** + * Returns the WAVE format type value for the given {@link C.PcmEncoding}. + * + * @param pcmEncoding The {@link C.PcmEncoding} value. + * @return The corresponding WAVE format type. + * @throws IllegalArgumentException If {@code pcmEncoding} is not a {@link C.PcmEncoding}, or if + * it's {@link C#ENCODING_INVALID} or {@link Format#NO_VALUE}. + */ + public static int getTypeForPcmEncoding(@C.PcmEncoding int pcmEncoding) { + switch (pcmEncoding) { + case C.ENCODING_PCM_8BIT: + case C.ENCODING_PCM_16BIT: + case C.ENCODING_PCM_24BIT: + case C.ENCODING_PCM_32BIT: + return TYPE_PCM; + case C.ENCODING_PCM_FLOAT: + return TYPE_FLOAT; + case C.ENCODING_PCM_16BIT_BIG_ENDIAN: // Not TYPE_PCM, because TYPE_PCM is little endian. + case C.ENCODING_INVALID: + case Format.NO_VALUE: + default: + throw new IllegalArgumentException(); + } + } + + /** + * Returns the {@link C.PcmEncoding} for the given WAVE format type value, or {@link + * C#ENCODING_INVALID} if the type is not a known PCM type. + */ + public static @C.PcmEncoding int getPcmEncodingForType(int type, int bitsPerSample) { + switch (type) { + case TYPE_PCM: + case TYPE_WAVE_FORMAT_EXTENSIBLE: + return Util.getPcmEncoding(bitsPerSample); + case TYPE_FLOAT: + return bitsPerSample == 32 ? C.ENCODING_PCM_FLOAT : C.ENCODING_INVALID; + default: + return C.ENCODING_INVALID; + } + } + + private WavUtil() { + // Prevent instantiation. + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/package-info.java new file mode 100644 index 0000000000..95c29d7333 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/audio/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.audio; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DatabaseIOException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DatabaseIOException.java new file mode 100644 index 0000000000..4c03addf22 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DatabaseIOException.java @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.database; + +import android.database.SQLException; +import java.io.IOException; + +/** An {@link IOException} whose cause is an {@link SQLException}. */ +public final class DatabaseIOException extends IOException { + + public DatabaseIOException(SQLException cause) { + super(cause); + } + + public DatabaseIOException(SQLException cause, String message) { + super(message, cause); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DatabaseProvider.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DatabaseProvider.java new file mode 100644 index 0000000000..81deccaf93 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DatabaseProvider.java @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.database; + +import android.database.sqlite.SQLiteDatabase; +import android.database.sqlite.SQLiteException; + +/** + * Provides {@link SQLiteDatabase} instances to ExoPlayer components, which may read and write + * tables prefixed with {@link #TABLE_PREFIX}. + */ +public interface DatabaseProvider { + + /** Prefix for tables that can be read and written by ExoPlayer components. */ + String TABLE_PREFIX = "ExoPlayer"; + + /** + * Creates and/or opens a database that will be used for reading and writing. + * + *

Once opened successfully, the database is cached, so you can call this method every time you + * need to write to the database. Errors such as bad permissions or a full disk may cause this + * method to fail, but future attempts may succeed if the problem is fixed. + * + * @throws SQLiteException If the database cannot be opened for writing. + * @return A read/write database object. + */ + SQLiteDatabase getWritableDatabase(); + + /** + * Creates and/or opens a database. This will be the same object returned by {@link + * #getWritableDatabase()} unless some problem, such as a full disk, requires the database to be + * opened read-only. In that case, a read-only database object will be returned. If the problem is + * fixed, a future call to {@link #getWritableDatabase()} may succeed, in which case the read-only + * database object will be closed and the read/write object will be returned in the future. + * + *

Once opened successfully, the database is cached, so you can call this method every time you + * need to read from the database. + * + * @throws SQLiteException If the database cannot be opened. + * @return A database object valid until {@link #getWritableDatabase()} is called. + */ + SQLiteDatabase getReadableDatabase(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DefaultDatabaseProvider.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DefaultDatabaseProvider.java new file mode 100644 index 0000000000..8da3de15c8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/DefaultDatabaseProvider.java @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.database; + +import android.database.sqlite.SQLiteDatabase; +import android.database.sqlite.SQLiteOpenHelper; + +/** A {@link DatabaseProvider} that provides instances obtained from a {@link SQLiteOpenHelper}. */ +public final class DefaultDatabaseProvider implements DatabaseProvider { + + private final SQLiteOpenHelper sqliteOpenHelper; + + /** + * @param sqliteOpenHelper An {@link SQLiteOpenHelper} from which to obtain database instances. + */ + public DefaultDatabaseProvider(SQLiteOpenHelper sqliteOpenHelper) { + this.sqliteOpenHelper = sqliteOpenHelper; + } + + @Override + public SQLiteDatabase getWritableDatabase() { + return sqliteOpenHelper.getWritableDatabase(); + } + + @Override + public SQLiteDatabase getReadableDatabase() { + return sqliteOpenHelper.getReadableDatabase(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/ExoDatabaseProvider.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/ExoDatabaseProvider.java new file mode 100644 index 0000000000..037442b102 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/ExoDatabaseProvider.java @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.database; + +import android.content.Context; +import android.database.Cursor; +import android.database.SQLException; +import android.database.sqlite.SQLiteDatabase; +import android.database.sqlite.SQLiteOpenHelper; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; + +/** + * An {@link SQLiteOpenHelper} that provides instances of a standalone ExoPlayer database. + * + *

Suitable for use by applications that do not already have their own database, or that would + * prefer to keep ExoPlayer tables isolated in their own database. Other applications should prefer + * to use {@link DefaultDatabaseProvider} with their own {@link SQLiteOpenHelper}. + */ +public final class ExoDatabaseProvider extends SQLiteOpenHelper implements DatabaseProvider { + + /** The file name used for the standalone ExoPlayer database. */ + public static final String DATABASE_NAME = "exoplayer_internal.db"; + + private static final int VERSION = 1; + private static final String TAG = "ExoDatabaseProvider"; + + /** + * Provides instances of the database located by passing {@link #DATABASE_NAME} to {@link + * Context#getDatabasePath(String)}. + * + * @param context Any context. + */ + public ExoDatabaseProvider(Context context) { + super(context.getApplicationContext(), DATABASE_NAME, /* factory= */ null, VERSION); + } + + @Override + public void onCreate(SQLiteDatabase db) { + // Features create their own tables. + } + + @Override + public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { + // Features handle their own upgrades. + } + + @Override + public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) { + wipeDatabase(db); + } + + /** + * Makes a best effort to wipe the existing database. The wipe may be incomplete if the database + * contains foreign key constraints. + */ + private static void wipeDatabase(SQLiteDatabase db) { + String[] columns = {"type", "name"}; + try (Cursor cursor = + db.query( + "sqlite_master", + columns, + /* selection= */ null, + /* selectionArgs= */ null, + /* groupBy= */ null, + /* having= */ null, + /* orderBy= */ null)) { + while (cursor.moveToNext()) { + String type = cursor.getString(0); + String name = cursor.getString(1); + if (!"sqlite_sequence".equals(name)) { + // If it's not an SQL-controlled entity, drop it + String sql = "DROP " + type + " IF EXISTS " + name; + try { + db.execSQL(sql); + } catch (SQLException e) { + Log.e(TAG, "Error executing " + sql, e); + } + } + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/VersionTable.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/VersionTable.java new file mode 100644 index 0000000000..d3174e67b2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/VersionTable.java @@ -0,0 +1,170 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.database; + +import android.content.ContentValues; +import android.database.Cursor; +import android.database.DatabaseUtils; +import android.database.SQLException; +import android.database.sqlite.SQLiteDatabase; +import androidx.annotation.IntDef; +import androidx.annotation.VisibleForTesting; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Utility methods for accessing versions of ExoPlayer database components. This allows them to be + * versioned independently to the version of the containing database. + */ +public final class VersionTable { + + /** Returned by {@link #getVersion(SQLiteDatabase, int, String)} if the version is unset. */ + public static final int VERSION_UNSET = -1; + /** Version of tables used for offline functionality. */ + public static final int FEATURE_OFFLINE = 0; + /** Version of tables used for cache content metadata. */ + public static final int FEATURE_CACHE_CONTENT_METADATA = 1; + /** Version of tables used for cache file metadata. */ + public static final int FEATURE_CACHE_FILE_METADATA = 2; + + private static final String TABLE_NAME = DatabaseProvider.TABLE_PREFIX + "Versions"; + + private static final String COLUMN_FEATURE = "feature"; + private static final String COLUMN_INSTANCE_UID = "instance_uid"; + private static final String COLUMN_VERSION = "version"; + + private static final String WHERE_FEATURE_AND_INSTANCE_UID_EQUALS = + COLUMN_FEATURE + " = ? AND " + COLUMN_INSTANCE_UID + " = ?"; + + private static final String PRIMARY_KEY = + "PRIMARY KEY (" + COLUMN_FEATURE + ", " + COLUMN_INSTANCE_UID + ")"; + private static final String SQL_CREATE_TABLE_IF_NOT_EXISTS = + "CREATE TABLE IF NOT EXISTS " + + TABLE_NAME + + " (" + + COLUMN_FEATURE + + " INTEGER NOT NULL," + + COLUMN_INSTANCE_UID + + " TEXT NOT NULL," + + COLUMN_VERSION + + " INTEGER NOT NULL," + + PRIMARY_KEY + + ")"; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({FEATURE_OFFLINE, FEATURE_CACHE_CONTENT_METADATA, FEATURE_CACHE_FILE_METADATA}) + private @interface Feature {} + + private VersionTable() {} + + /** + * Sets the version of a specified instance of a specified feature. + * + * @param writableDatabase The database to update. + * @param feature The feature. + * @param instanceUid The unique identifier of the instance of the feature. + * @param version The version. + * @throws DatabaseIOException If an error occurs executing the SQL. + */ + public static void setVersion( + SQLiteDatabase writableDatabase, @Feature int feature, String instanceUid, int version) + throws DatabaseIOException { + try { + writableDatabase.execSQL(SQL_CREATE_TABLE_IF_NOT_EXISTS); + ContentValues values = new ContentValues(); + values.put(COLUMN_FEATURE, feature); + values.put(COLUMN_INSTANCE_UID, instanceUid); + values.put(COLUMN_VERSION, version); + writableDatabase.replaceOrThrow(TABLE_NAME, /* nullColumnHack= */ null, values); + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + /** + * Removes the version of a specified instance of a feature. + * + * @param writableDatabase The database to update. + * @param feature The feature. + * @param instanceUid The unique identifier of the instance of the feature. + * @throws DatabaseIOException If an error occurs executing the SQL. + */ + public static void removeVersion( + SQLiteDatabase writableDatabase, @Feature int feature, String instanceUid) + throws DatabaseIOException { + try { + if (!tableExists(writableDatabase, TABLE_NAME)) { + return; + } + writableDatabase.delete( + TABLE_NAME, + WHERE_FEATURE_AND_INSTANCE_UID_EQUALS, + featureAndInstanceUidArguments(feature, instanceUid)); + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + /** + * Returns the version of a specified instance of a feature, or {@link #VERSION_UNSET} if no + * version is set. + * + * @param database The database to query. + * @param feature The feature. + * @param instanceUid The unique identifier of the instance of the feature. + * @return The version, or {@link #VERSION_UNSET} if no version is set. + * @throws DatabaseIOException If an error occurs executing the SQL. + */ + public static int getVersion(SQLiteDatabase database, @Feature int feature, String instanceUid) + throws DatabaseIOException { + try { + if (!tableExists(database, TABLE_NAME)) { + return VERSION_UNSET; + } + try (Cursor cursor = + database.query( + TABLE_NAME, + new String[] {COLUMN_VERSION}, + WHERE_FEATURE_AND_INSTANCE_UID_EQUALS, + featureAndInstanceUidArguments(feature, instanceUid), + /* groupBy= */ null, + /* having= */ null, + /* orderBy= */ null)) { + if (cursor.getCount() == 0) { + return VERSION_UNSET; + } + cursor.moveToNext(); + return cursor.getInt(/* COLUMN_VERSION index */ 0); + } + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + @VisibleForTesting + /* package */ static boolean tableExists(SQLiteDatabase readableDatabase, String tableName) { + long count = + DatabaseUtils.queryNumEntries( + readableDatabase, "sqlite_master", "tbl_name = ?", new String[] {tableName}); + return count > 0; + } + + private static String[] featureAndInstanceUidArguments(int feature, String instance) { + return new String[] {Integer.toString(feature), instance}; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/package-info.java new file mode 100644 index 0000000000..85e0dfa5e3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/database/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.database; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/Buffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/Buffer.java new file mode 100644 index 0000000000..ac254fae96 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/Buffer.java @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.decoder; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; + +/** + * Base class for buffers with flags. + */ +public abstract class Buffer { + + @C.BufferFlags + private int flags; + + /** + * Clears the buffer. + */ + public void clear() { + flags = 0; + } + + /** + * Returns whether the {@link C#BUFFER_FLAG_DECODE_ONLY} flag is set. + */ + public final boolean isDecodeOnly() { + return getFlag(C.BUFFER_FLAG_DECODE_ONLY); + } + + /** + * Returns whether the {@link C#BUFFER_FLAG_END_OF_STREAM} flag is set. + */ + public final boolean isEndOfStream() { + return getFlag(C.BUFFER_FLAG_END_OF_STREAM); + } + + /** + * Returns whether the {@link C#BUFFER_FLAG_KEY_FRAME} flag is set. + */ + public final boolean isKeyFrame() { + return getFlag(C.BUFFER_FLAG_KEY_FRAME); + } + + /** Returns whether the {@link C#BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA} flag is set. */ + public final boolean hasSupplementalData() { + return getFlag(C.BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA); + } + + /** + * Replaces this buffer's flags with {@code flags}. + * + * @param flags The flags to set, which should be a combination of the {@code C.BUFFER_FLAG_*} + * constants. + */ + public final void setFlags(@C.BufferFlags int flags) { + this.flags = flags; + } + + /** + * Adds the {@code flag} to this buffer's flags. + * + * @param flag The flag to add to this buffer's flags, which should be one of the + * {@code C.BUFFER_FLAG_*} constants. + */ + public final void addFlag(@C.BufferFlags int flag) { + flags |= flag; + } + + /** + * Removes the {@code flag} from this buffer's flags, if it is set. + * + * @param flag The flag to remove. + */ + public final void clearFlag(@C.BufferFlags int flag) { + flags &= ~flag; + } + + /** + * Returns whether the specified flag has been set on this buffer. + * + * @param flag The flag to check. + * @return Whether the flag is set. + */ + protected final boolean getFlag(@C.BufferFlags int flag) { + return (flags & flag) == flag; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/CryptoInfo.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/CryptoInfo.java new file mode 100644 index 0000000000..1bfb0fb06e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/CryptoInfo.java @@ -0,0 +1,146 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.decoder; + +import android.annotation.TargetApi; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Compatibility wrapper for {@link android.media.MediaCodec.CryptoInfo}. + */ +public final class CryptoInfo { + + /** + * The 16 byte initialization vector. If the initialization vector of the content is shorter than + * 16 bytes, 0 byte padding is appended to extend the vector to the required 16 byte length. + * + * @see android.media.MediaCodec.CryptoInfo#iv + */ + public byte[] iv; + /** + * The 16 byte key id. + * + * @see android.media.MediaCodec.CryptoInfo#key + */ + public byte[] key; + /** + * The type of encryption that has been applied. Must be one of the {@link C.CryptoMode} values. + * + * @see android.media.MediaCodec.CryptoInfo#mode + */ + @C.CryptoMode public int mode; + /** + * The number of leading unencrypted bytes in each sub-sample. If null, all bytes are treated as + * encrypted and {@link #numBytesOfEncryptedData} must be specified. + * + * @see android.media.MediaCodec.CryptoInfo#numBytesOfClearData + */ + public int[] numBytesOfClearData; + /** + * The number of trailing encrypted bytes in each sub-sample. If null, all bytes are treated as + * clear and {@link #numBytesOfClearData} must be specified. + * + * @see android.media.MediaCodec.CryptoInfo#numBytesOfEncryptedData + */ + public int[] numBytesOfEncryptedData; + /** + * The number of subSamples that make up the buffer's contents. + * + * @see android.media.MediaCodec.CryptoInfo#numSubSamples + */ + public int numSubSamples; + /** + * @see android.media.MediaCodec.CryptoInfo.Pattern + */ + public int encryptedBlocks; + /** + * @see android.media.MediaCodec.CryptoInfo.Pattern + */ + public int clearBlocks; + + private final android.media.MediaCodec.CryptoInfo frameworkCryptoInfo; + private final PatternHolderV24 patternHolder; + + public CryptoInfo() { + frameworkCryptoInfo = new android.media.MediaCodec.CryptoInfo(); + patternHolder = Util.SDK_INT >= 24 ? new PatternHolderV24(frameworkCryptoInfo) : null; + } + + /** + * @see android.media.MediaCodec.CryptoInfo#set(int, int[], int[], byte[], byte[], int) + */ + public void set(int numSubSamples, int[] numBytesOfClearData, int[] numBytesOfEncryptedData, + byte[] key, byte[] iv, @C.CryptoMode int mode, int encryptedBlocks, int clearBlocks) { + this.numSubSamples = numSubSamples; + this.numBytesOfClearData = numBytesOfClearData; + this.numBytesOfEncryptedData = numBytesOfEncryptedData; + this.key = key; + this.iv = iv; + this.mode = mode; + this.encryptedBlocks = encryptedBlocks; + this.clearBlocks = clearBlocks; + // Update frameworkCryptoInfo fields directly because CryptoInfo.set performs an unnecessary + // object allocation on Android N. + frameworkCryptoInfo.numSubSamples = numSubSamples; + frameworkCryptoInfo.numBytesOfClearData = numBytesOfClearData; + frameworkCryptoInfo.numBytesOfEncryptedData = numBytesOfEncryptedData; + frameworkCryptoInfo.key = key; + frameworkCryptoInfo.iv = iv; + frameworkCryptoInfo.mode = mode; + if (Util.SDK_INT >= 24) { + patternHolder.set(encryptedBlocks, clearBlocks); + } + } + + /** + * Returns an equivalent {@link android.media.MediaCodec.CryptoInfo} instance. + * + *

Successive calls to this method on a single {@link CryptoInfo} will return the same + * instance. Changes to the {@link CryptoInfo} will be reflected in the returned object. The + * return object should not be modified directly. + * + * @return The equivalent {@link android.media.MediaCodec.CryptoInfo} instance. + */ + public android.media.MediaCodec.CryptoInfo getFrameworkCryptoInfo() { + return frameworkCryptoInfo; + } + + /** @deprecated Use {@link #getFrameworkCryptoInfo()}. */ + @Deprecated + public android.media.MediaCodec.CryptoInfo getFrameworkCryptoInfoV16() { + return getFrameworkCryptoInfo(); + } + + @TargetApi(24) + private static final class PatternHolderV24 { + + private final android.media.MediaCodec.CryptoInfo frameworkCryptoInfo; + private final android.media.MediaCodec.CryptoInfo.Pattern pattern; + + private PatternHolderV24(android.media.MediaCodec.CryptoInfo frameworkCryptoInfo) { + this.frameworkCryptoInfo = frameworkCryptoInfo; + pattern = new android.media.MediaCodec.CryptoInfo.Pattern(0, 0); + } + + private void set(int encryptedBlocks, int clearBlocks) { + pattern.set(encryptedBlocks, clearBlocks); + frameworkCryptoInfo.setPattern(pattern); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/Decoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/Decoder.java new file mode 100644 index 0000000000..8040c04ebe --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/Decoder.java @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.decoder; + +import androidx.annotation.Nullable; + +/** + * A media decoder. + * + * @param The type of buffer input to the decoder. + * @param The type of buffer output from the decoder. + * @param The type of exception thrown from the decoder. + */ +public interface Decoder { + + /** + * Returns the name of the decoder. + * + * @return The name of the decoder. + */ + String getName(); + + /** + * Dequeues the next input buffer to be filled and queued to the decoder. + * + * @return The input buffer, which will have been cleared, or null if a buffer isn't available. + * @throws E If a decoder error has occurred. + */ + @Nullable + I dequeueInputBuffer() throws E; + + /** + * Queues an input buffer to the decoder. + * + * @param inputBuffer The input buffer. + * @throws E If a decoder error has occurred. + */ + void queueInputBuffer(I inputBuffer) throws E; + + /** + * Dequeues the next output buffer from the decoder. + * + * @return The output buffer, or null if an output buffer isn't available. + * @throws E If a decoder error has occurred. + */ + @Nullable + O dequeueOutputBuffer() throws E; + + /** + * Flushes the decoder. Ownership of dequeued input buffers is returned to the decoder. The caller + * is still responsible for releasing any dequeued output buffers. + */ + void flush(); + + /** + * Releases the decoder. Must be called when the decoder is no longer needed. + */ + void release(); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/DecoderCounters.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/DecoderCounters.java new file mode 100644 index 0000000000..f8bdb9b29a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/DecoderCounters.java @@ -0,0 +1,105 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.decoder; + +/** + * Maintains decoder event counts, for debugging purposes only. + *

+ * Counters should be written from the playback thread only. Counters may be read from any thread. + * To ensure that the counter values are made visible across threads, users of this class should + * invoke {@link #ensureUpdated()} prior to reading and after writing. + */ +public final class DecoderCounters { + + /** + * The number of times a decoder has been initialized. + */ + public int decoderInitCount; + /** + * The number of times a decoder has been released. + */ + public int decoderReleaseCount; + /** + * The number of queued input buffers. + */ + public int inputBufferCount; + /** + * The number of skipped input buffers. + *

+ * A skipped input buffer is an input buffer that was deliberately not sent to the decoder. + */ + public int skippedInputBufferCount; + /** + * The number of rendered output buffers. + */ + public int renderedOutputBufferCount; + /** + * The number of skipped output buffers. + *

+ * A skipped output buffer is an output buffer that was deliberately not rendered. + */ + public int skippedOutputBufferCount; + /** + * The number of dropped buffers. + *

+ * A dropped buffer is an buffer that was supposed to be decoded/rendered, but was instead + * dropped because it could not be rendered in time. + */ + public int droppedBufferCount; + /** + * The maximum number of dropped buffers without an interleaving rendered output buffer. + *

+ * Skipped output buffers are ignored for the purposes of calculating this value. + */ + public int maxConsecutiveDroppedBufferCount; + /** + * The number of times all buffers to a keyframe were dropped. + *

+ * Each time buffers to a keyframe are dropped, this counter is increased by one, and the dropped + * buffer counters are increased by one (for the current output buffer) plus the number of buffers + * dropped from the source to advance to the keyframe. + */ + public int droppedToKeyframeCount; + + /** + * Should be called to ensure counter values are made visible across threads. The playback thread + * should call this method after updating the counter values. Any other thread should call this + * method before reading the counters. + */ + public synchronized void ensureUpdated() { + // Do nothing. The use of synchronized ensures a memory barrier should another thread also + // call this method. + } + + /** + * Merges the counts from {@code other} into this instance. + * + * @param other The {@link DecoderCounters} to merge into this instance. + */ + public void merge(DecoderCounters other) { + decoderInitCount += other.decoderInitCount; + decoderReleaseCount += other.decoderReleaseCount; + inputBufferCount += other.inputBufferCount; + skippedInputBufferCount += other.skippedInputBufferCount; + renderedOutputBufferCount += other.renderedOutputBufferCount; + skippedOutputBufferCount += other.skippedOutputBufferCount; + droppedBufferCount += other.droppedBufferCount; + maxConsecutiveDroppedBufferCount = Math.max(maxConsecutiveDroppedBufferCount, + other.maxConsecutiveDroppedBufferCount); + droppedToKeyframeCount += other.droppedToKeyframeCount; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/DecoderInputBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/DecoderInputBuffer.java new file mode 100644 index 0000000000..254ecfdec8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/DecoderInputBuffer.java @@ -0,0 +1,209 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.decoder; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.nio.ByteBuffer; +import org.checkerframework.checker.nullness.qual.EnsuresNonNull; + +/** + * Holds input for a decoder. + */ +public class DecoderInputBuffer extends Buffer { + + /** + * The buffer replacement mode, which may disable replacement. One of {@link + * #BUFFER_REPLACEMENT_MODE_DISABLED}, {@link #BUFFER_REPLACEMENT_MODE_NORMAL} or {@link + * #BUFFER_REPLACEMENT_MODE_DIRECT}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + BUFFER_REPLACEMENT_MODE_DISABLED, + BUFFER_REPLACEMENT_MODE_NORMAL, + BUFFER_REPLACEMENT_MODE_DIRECT + }) + public @interface BufferReplacementMode {} + /** + * Disallows buffer replacement. + */ + public static final int BUFFER_REPLACEMENT_MODE_DISABLED = 0; + /** + * Allows buffer replacement using {@link ByteBuffer#allocate(int)}. + */ + public static final int BUFFER_REPLACEMENT_MODE_NORMAL = 1; + /** + * Allows buffer replacement using {@link ByteBuffer#allocateDirect(int)}. + */ + public static final int BUFFER_REPLACEMENT_MODE_DIRECT = 2; + + /** + * {@link CryptoInfo} for encrypted data. + */ + public final CryptoInfo cryptoInfo; + + /** The buffer's data, or {@code null} if no data has been set. */ + @Nullable public ByteBuffer data; + + // TODO: Remove this temporary signaling once end-of-stream propagation for clips using content + // protection is fixed. See [Internal: b/153326944] for details. + /** + * Whether the last attempt to read a sample into this buffer failed due to not yet having the DRM + * keys associated with the next sample. + */ + public boolean waitingForKeys; + + /** + * The time at which the sample should be presented. + */ + public long timeUs; + + /** + * Supplemental data related to the buffer, if {@link #hasSupplementalData()} returns true. If + * present, the buffer is populated with supplemental data from position 0 to its limit. + */ + @Nullable public ByteBuffer supplementalData; + + @BufferReplacementMode private final int bufferReplacementMode; + + /** + * Creates a new instance for which {@link #isFlagsOnly()} will return true. + * + * @return A new flags only input buffer. + */ + public static DecoderInputBuffer newFlagsOnlyInstance() { + return new DecoderInputBuffer(BUFFER_REPLACEMENT_MODE_DISABLED); + } + + /** + * @param bufferReplacementMode Determines the behavior of {@link #ensureSpaceForWrite(int)}. One + * of {@link #BUFFER_REPLACEMENT_MODE_DISABLED}, {@link #BUFFER_REPLACEMENT_MODE_NORMAL} and + * {@link #BUFFER_REPLACEMENT_MODE_DIRECT}. + */ + public DecoderInputBuffer(@BufferReplacementMode int bufferReplacementMode) { + this.cryptoInfo = new CryptoInfo(); + this.bufferReplacementMode = bufferReplacementMode; + } + + /** + * Clears {@link #supplementalData} and ensures that it's large enough to accommodate {@code + * length} bytes. + * + * @param length The length of the supplemental data that must be accommodated, in bytes. + */ + @EnsuresNonNull("supplementalData") + public void resetSupplementalData(int length) { + if (supplementalData == null || supplementalData.capacity() < length) { + supplementalData = ByteBuffer.allocate(length); + } else { + supplementalData.clear(); + } + } + + /** + * Ensures that {@link #data} is large enough to accommodate a write of a given length at its + * current position. + * + *

If the capacity of {@link #data} is sufficient this method does nothing. If the capacity is + * insufficient then an attempt is made to replace {@link #data} with a new {@link ByteBuffer} + * whose capacity is sufficient. Data up to the current position is copied to the new buffer. + * + * @param length The length of the write that must be accommodated, in bytes. + * @throws IllegalStateException If there is insufficient capacity to accommodate the write and + * the buffer replacement mode of the holder is {@link #BUFFER_REPLACEMENT_MODE_DISABLED}. + */ + @EnsuresNonNull("data") + public void ensureSpaceForWrite(int length) { + if (data == null) { + data = createReplacementByteBuffer(length); + return; + } + // Check whether the current buffer is sufficient. + int capacity = data.capacity(); + int position = data.position(); + int requiredCapacity = position + length; + if (capacity >= requiredCapacity) { + return; + } + // Instantiate a new buffer if possible. + ByteBuffer newData = createReplacementByteBuffer(requiredCapacity); + newData.order(data.order()); + // Copy data up to the current position from the old buffer to the new one. + if (position > 0) { + data.flip(); + newData.put(data); + } + // Set the new buffer. + data = newData; + } + + /** + * Returns whether the buffer is only able to hold flags, meaning {@link #data} is null and + * its replacement mode is {@link #BUFFER_REPLACEMENT_MODE_DISABLED}. + */ + public final boolean isFlagsOnly() { + return data == null && bufferReplacementMode == BUFFER_REPLACEMENT_MODE_DISABLED; + } + + /** + * Returns whether the {@link C#BUFFER_FLAG_ENCRYPTED} flag is set. + */ + public final boolean isEncrypted() { + return getFlag(C.BUFFER_FLAG_ENCRYPTED); + } + + /** + * Flips {@link #data} and {@link #supplementalData} in preparation for being queued to a decoder. + * + * @see java.nio.Buffer#flip() + */ + public final void flip() { + data.flip(); + if (supplementalData != null) { + supplementalData.flip(); + } + } + + @Override + public void clear() { + super.clear(); + if (data != null) { + data.clear(); + } + if (supplementalData != null) { + supplementalData.clear(); + } + waitingForKeys = false; + } + + private ByteBuffer createReplacementByteBuffer(int requiredCapacity) { + if (bufferReplacementMode == BUFFER_REPLACEMENT_MODE_NORMAL) { + return ByteBuffer.allocate(requiredCapacity); + } else if (bufferReplacementMode == BUFFER_REPLACEMENT_MODE_DIRECT) { + return ByteBuffer.allocateDirect(requiredCapacity); + } else { + int currentCapacity = data == null ? 0 : data.capacity(); + throw new IllegalStateException("Buffer too small (" + currentCapacity + " < " + + requiredCapacity + ")"); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/OutputBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/OutputBuffer.java new file mode 100644 index 0000000000..73a8a7d2fd --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/OutputBuffer.java @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.decoder; + +/** + * Output buffer decoded by a {@link Decoder}. + */ +public abstract class OutputBuffer extends Buffer { + + /** + * The presentation timestamp for the buffer, in microseconds. + */ + public long timeUs; + + /** + * The number of buffers immediately prior to this one that were skipped in the {@link Decoder}. + */ + public int skippedOutputBufferCount; + + /** + * Releases the output buffer for reuse. Must be called when the buffer is no longer needed. + */ + public abstract void release(); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/SimpleDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/SimpleDecoder.java new file mode 100644 index 0000000000..a193ad3c8e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/SimpleDecoder.java @@ -0,0 +1,314 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.decoder; + +import androidx.annotation.CallSuper; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.ArrayDeque; + +/** Base class for {@link Decoder}s that use their own decode thread. */ +@SuppressWarnings("UngroupedOverloads") +public abstract class SimpleDecoder< + I extends DecoderInputBuffer, O extends OutputBuffer, E extends Exception> + implements Decoder { + + private final Thread decodeThread; + + private final Object lock; + private final ArrayDeque queuedInputBuffers; + private final ArrayDeque queuedOutputBuffers; + private final I[] availableInputBuffers; + private final O[] availableOutputBuffers; + + private int availableInputBufferCount; + private int availableOutputBufferCount; + private I dequeuedInputBuffer; + + private E exception; + private boolean flushed; + private boolean released; + private int skippedOutputBufferCount; + + /** + * @param inputBuffers An array of nulls that will be used to store references to input buffers. + * @param outputBuffers An array of nulls that will be used to store references to output buffers. + */ + protected SimpleDecoder(I[] inputBuffers, O[] outputBuffers) { + lock = new Object(); + queuedInputBuffers = new ArrayDeque<>(); + queuedOutputBuffers = new ArrayDeque<>(); + availableInputBuffers = inputBuffers; + availableInputBufferCount = inputBuffers.length; + for (int i = 0; i < availableInputBufferCount; i++) { + availableInputBuffers[i] = createInputBuffer(); + } + availableOutputBuffers = outputBuffers; + availableOutputBufferCount = outputBuffers.length; + for (int i = 0; i < availableOutputBufferCount; i++) { + availableOutputBuffers[i] = createOutputBuffer(); + } + decodeThread = new Thread() { + @Override + public void run() { + SimpleDecoder.this.run(); + } + }; + decodeThread.start(); + } + + /** + * Sets the initial size of each input buffer. + *

+ * This method should only be called before the decoder is used (i.e. before the first call to + * {@link #dequeueInputBuffer()}. + * + * @param size The required input buffer size. + */ + protected final void setInitialInputBufferSize(int size) { + Assertions.checkState(availableInputBufferCount == availableInputBuffers.length); + for (I inputBuffer : availableInputBuffers) { + inputBuffer.ensureSpaceForWrite(size); + } + } + + @Override + @Nullable + public final I dequeueInputBuffer() throws E { + synchronized (lock) { + maybeThrowException(); + Assertions.checkState(dequeuedInputBuffer == null); + dequeuedInputBuffer = availableInputBufferCount == 0 ? null + : availableInputBuffers[--availableInputBufferCount]; + return dequeuedInputBuffer; + } + } + + @Override + public final void queueInputBuffer(I inputBuffer) throws E { + synchronized (lock) { + maybeThrowException(); + Assertions.checkArgument(inputBuffer == dequeuedInputBuffer); + queuedInputBuffers.addLast(inputBuffer); + maybeNotifyDecodeLoop(); + dequeuedInputBuffer = null; + } + } + + @Override + @Nullable + public final O dequeueOutputBuffer() throws E { + synchronized (lock) { + maybeThrowException(); + if (queuedOutputBuffers.isEmpty()) { + return null; + } + return queuedOutputBuffers.removeFirst(); + } + } + + /** + * Releases an output buffer back to the decoder. + * + * @param outputBuffer The output buffer being released. + */ + @CallSuper + protected void releaseOutputBuffer(O outputBuffer) { + synchronized (lock) { + releaseOutputBufferInternal(outputBuffer); + maybeNotifyDecodeLoop(); + } + } + + @Override + public final void flush() { + synchronized (lock) { + flushed = true; + skippedOutputBufferCount = 0; + if (dequeuedInputBuffer != null) { + releaseInputBufferInternal(dequeuedInputBuffer); + dequeuedInputBuffer = null; + } + while (!queuedInputBuffers.isEmpty()) { + releaseInputBufferInternal(queuedInputBuffers.removeFirst()); + } + while (!queuedOutputBuffers.isEmpty()) { + queuedOutputBuffers.removeFirst().release(); + } + exception = null; + } + } + + @CallSuper + @Override + public void release() { + synchronized (lock) { + released = true; + lock.notify(); + } + try { + decodeThread.join(); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + } + } + + /** + * Throws a decode exception, if there is one. + * + * @throws E The decode exception. + */ + private void maybeThrowException() throws E { + if (exception != null) { + throw exception; + } + } + + /** + * Notifies the decode loop if there exists a queued input buffer and an available output buffer + * to decode into. + *

+ * Should only be called whilst synchronized on the lock object. + */ + private void maybeNotifyDecodeLoop() { + if (canDecodeBuffer()) { + lock.notify(); + } + } + + private void run() { + try { + while (decode()) { + // Do nothing. + } + } catch (InterruptedException e) { + // Not expected. + throw new IllegalStateException(e); + } + } + + private boolean decode() throws InterruptedException { + I inputBuffer; + O outputBuffer; + boolean resetDecoder; + + // Wait until we have an input buffer to decode, and an output buffer to decode into. + synchronized (lock) { + while (!released && !canDecodeBuffer()) { + lock.wait(); + } + if (released) { + return false; + } + inputBuffer = queuedInputBuffers.removeFirst(); + outputBuffer = availableOutputBuffers[--availableOutputBufferCount]; + resetDecoder = flushed; + flushed = false; + } + + if (inputBuffer.isEndOfStream()) { + outputBuffer.addFlag(C.BUFFER_FLAG_END_OF_STREAM); + } else { + if (inputBuffer.isDecodeOnly()) { + outputBuffer.addFlag(C.BUFFER_FLAG_DECODE_ONLY); + } + @Nullable E exception; + try { + exception = decode(inputBuffer, outputBuffer, resetDecoder); + } catch (RuntimeException e) { + // This can occur if a sample is malformed in a way that the decoder is not robust against. + // We don't want the process to die in this case, but we do want to propagate the error. + exception = createUnexpectedDecodeException(e); + } catch (OutOfMemoryError e) { + // This can occur if a sample is malformed in a way that causes the decoder to think it + // needs to allocate a large amount of memory. We don't want the process to die in this + // case, but we do want to propagate the error. + exception = createUnexpectedDecodeException(e); + } + if (exception != null) { + synchronized (lock) { + this.exception = exception; + } + return false; + } + } + + synchronized (lock) { + if (flushed) { + outputBuffer.release(); + } else if (outputBuffer.isDecodeOnly()) { + skippedOutputBufferCount++; + outputBuffer.release(); + } else { + outputBuffer.skippedOutputBufferCount = skippedOutputBufferCount; + skippedOutputBufferCount = 0; + queuedOutputBuffers.addLast(outputBuffer); + } + // Make the input buffer available again. + releaseInputBufferInternal(inputBuffer); + } + + return true; + } + + private boolean canDecodeBuffer() { + return !queuedInputBuffers.isEmpty() && availableOutputBufferCount > 0; + } + + private void releaseInputBufferInternal(I inputBuffer) { + inputBuffer.clear(); + availableInputBuffers[availableInputBufferCount++] = inputBuffer; + } + + private void releaseOutputBufferInternal(O outputBuffer) { + outputBuffer.clear(); + availableOutputBuffers[availableOutputBufferCount++] = outputBuffer; + } + + /** + * Creates a new input buffer. + */ + protected abstract I createInputBuffer(); + + /** + * Creates a new output buffer. + */ + protected abstract O createOutputBuffer(); + + /** + * Creates an exception to propagate for an unexpected decode error. + * + * @param error The unexpected decode error. + * @return The exception to propagate. + */ + protected abstract E createUnexpectedDecodeException(Throwable error); + + /** + * Decodes the {@code inputBuffer} and stores any decoded output in {@code outputBuffer}. + * + * @param inputBuffer The buffer to decode. + * @param outputBuffer The output buffer to store decoded data. The flag {@link + * C#BUFFER_FLAG_DECODE_ONLY} will be set if the same flag is set on {@code inputBuffer}, but + * may be set/unset as required. If the flag is set when the call returns then the output + * buffer will not be made available to dequeue. The output buffer may not have been populated + * in this case. + * @param reset Whether the decoder must be reset before decoding. + * @return A decoder exception if an error occurred, or null if decoding was successful. + */ + @Nullable + protected abstract E decode(I inputBuffer, O outputBuffer, boolean reset); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/SimpleOutputBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/SimpleOutputBuffer.java new file mode 100644 index 0000000000..4b80d38e54 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/SimpleOutputBuffer.java @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.decoder; + +import androidx.annotation.Nullable; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; + +/** + * Buffer for {@link SimpleDecoder} output. + */ +public class SimpleOutputBuffer extends OutputBuffer { + + private final SimpleDecoder owner; + + @Nullable public ByteBuffer data; + + public SimpleOutputBuffer(SimpleDecoder owner) { + this.owner = owner; + } + + /** + * Initializes the buffer. + * + * @param timeUs The presentation timestamp for the buffer, in microseconds. + * @param size An upper bound on the size of the data that will be written to the buffer. + * @return The {@link #data} buffer, for convenience. + */ + public ByteBuffer init(long timeUs, int size) { + this.timeUs = timeUs; + if (data == null || data.capacity() < size) { + data = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder()); + } + data.position(0); + data.limit(size); + return data; + } + + @Override + public void clear() { + super.clear(); + if (data != null) { + data.clear(); + } + } + + @Override + public void release() { + owner.releaseOutputBuffer(this); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/package-info.java new file mode 100644 index 0000000000..78a2c9f2e2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.decoder; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ClearKeyUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ClearKeyUtil.java new file mode 100644 index 0000000000..770b8511d9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ClearKeyUtil.java @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.json.JSONArray; +import org.json.JSONException; +import org.json.JSONObject; + +/** + * Utility methods for ClearKey. + */ +/* package */ final class ClearKeyUtil { + + private static final String TAG = "ClearKeyUtil"; + + private ClearKeyUtil() {} + + /** + * Adjusts ClearKey request data obtained from the Android ClearKey CDM to be spec compliant. + * + * @param request The request data. + * @return The adjusted request data. + */ + public static byte[] adjustRequestData(byte[] request) { + if (Util.SDK_INT >= 27) { + return request; + } + // Prior to O-MR1 the ClearKey CDM encoded the values in the "kids" array using Base64 encoding + // rather than Base64Url encoding. See [Internal: b/64388098]. We know the exact request format + // from the platform's InitDataParser.cpp. Since there aren't any "+" or "/" symbols elsewhere + // in the request, it's safe to fix the encoding by replacement through the whole request. + String requestString = Util.fromUtf8Bytes(request); + return Util.getUtf8Bytes(base64ToBase64Url(requestString)); + } + + /** + * Adjusts ClearKey response data to be suitable for providing to the Android ClearKey CDM. + * + * @param response The response data. + * @return The adjusted response data. + */ + public static byte[] adjustResponseData(byte[] response) { + if (Util.SDK_INT >= 27) { + return response; + } + // Prior to O-MR1 the ClearKey CDM expected Base64 encoding rather than Base64Url encoding for + // the "k" and "kid" strings. See [Internal: b/64388098]. We know that the ClearKey CDM only + // looks at the k, kid and kty parameters in each key, so can ignore the rest of the response. + try { + JSONObject responseJson = new JSONObject(Util.fromUtf8Bytes(response)); + StringBuilder adjustedResponseBuilder = new StringBuilder("{\"keys\":["); + JSONArray keysArray = responseJson.getJSONArray("keys"); + for (int i = 0; i < keysArray.length(); i++) { + if (i != 0) { + adjustedResponseBuilder.append(","); + } + JSONObject key = keysArray.getJSONObject(i); + adjustedResponseBuilder.append("{\"k\":\""); + adjustedResponseBuilder.append(base64UrlToBase64(key.getString("k"))); + adjustedResponseBuilder.append("\",\"kid\":\""); + adjustedResponseBuilder.append(base64UrlToBase64(key.getString("kid"))); + adjustedResponseBuilder.append("\",\"kty\":\""); + adjustedResponseBuilder.append(key.getString("kty")); + adjustedResponseBuilder.append("\"}"); + } + adjustedResponseBuilder.append("]}"); + return Util.getUtf8Bytes(adjustedResponseBuilder.toString()); + } catch (JSONException e) { + Log.e(TAG, "Failed to adjust response data: " + Util.fromUtf8Bytes(response), e); + return response; + } + } + + private static String base64ToBase64Url(String base64) { + return base64.replace('+', '-').replace('/', '_'); + } + + private static String base64UrlToBase64(String base64Url) { + return base64Url.replace('-', '+').replace('_', '/'); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DecryptionException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DecryptionException.java new file mode 100644 index 0000000000..989e68befd --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DecryptionException.java @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +/** + * Thrown when a non-platform component fails to decrypt data. + */ +public class DecryptionException extends Exception { + + /** + * A component specific error code. + */ + public final int errorCode; + + /** + * @param errorCode A component specific error code. + * @param message The detail message. + */ + public DecryptionException(int errorCode, String message) { + super(message); + this.errorCode = errorCode; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DefaultDrmSession.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DefaultDrmSession.java new file mode 100644 index 0000000000..ad7ed80580 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DefaultDrmSession.java @@ -0,0 +1,607 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.annotation.SuppressLint; +import android.annotation.TargetApi; +import android.media.NotProvisionedException; +import android.os.Handler; +import android.os.HandlerThread; +import android.os.Looper; +import android.os.Message; +import android.os.SystemClock; +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData.SchemeData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaDrm.KeyRequest; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaDrm.ProvisionRequest; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.UUID; +import org.checkerframework.checker.nullness.qual.EnsuresNonNullIf; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; +import org.checkerframework.checker.nullness.qual.RequiresNonNull; + +/** A {@link DrmSession} that supports playbacks using {@link ExoMediaDrm}. */ +@TargetApi(18) +/* package */ class DefaultDrmSession implements DrmSession { + + /** Thrown when an unexpected exception or error is thrown during provisioning or key requests. */ + public static final class UnexpectedDrmSessionException extends IOException { + + public UnexpectedDrmSessionException(Throwable cause) { + super("Unexpected " + cause.getClass().getSimpleName() + ": " + cause.getMessage(), cause); + } + } + + /** Manages provisioning requests. */ + public interface ProvisioningManager { + + /** + * Called when a session requires provisioning. The manager may call {@link + * #provision()} to have this session perform the provisioning operation. The manager + * will call {@link DefaultDrmSession#onProvisionCompleted()} when provisioning has + * completed, or {@link DefaultDrmSession#onProvisionError} if provisioning fails. + * + * @param session The session. + */ + void provisionRequired(DefaultDrmSession session); + + /** + * Called by a session when it fails to perform a provisioning operation. + * + * @param error The error that occurred. + */ + void onProvisionError(Exception error); + + /** Called by a session when it successfully completes a provisioning operation. */ + void onProvisionCompleted(); + } + + /** Callback to be notified when the session is released. */ + public interface ReleaseCallback { + + /** + * Called immediately after releasing session resources. + * + * @param session The session. + */ + void onSessionReleased(DefaultDrmSession session); + } + + private static final String TAG = "DefaultDrmSession"; + + private static final int MSG_PROVISION = 0; + private static final int MSG_KEYS = 1; + private static final int MAX_LICENSE_DURATION_TO_RENEW_SECONDS = 60; + + /** The DRM scheme datas, or null if this session uses offline keys. */ + @Nullable public final List schemeDatas; + + private final ExoMediaDrm mediaDrm; + private final ProvisioningManager provisioningManager; + private final ReleaseCallback releaseCallback; + private final @DefaultDrmSessionManager.Mode int mode; + private final boolean playClearSamplesWithoutKeys; + private final boolean isPlaceholderSession; + private final HashMap keyRequestParameters; + private final EventDispatcher eventDispatcher; + private final LoadErrorHandlingPolicy loadErrorHandlingPolicy; + + /* package */ final MediaDrmCallback callback; + /* package */ final UUID uuid; + /* package */ final ResponseHandler responseHandler; + + private @DrmSession.State int state; + private int referenceCount; + @Nullable private HandlerThread requestHandlerThread; + @Nullable private RequestHandler requestHandler; + @Nullable private T mediaCrypto; + @Nullable private DrmSessionException lastException; + @Nullable private byte[] sessionId; + @MonotonicNonNull private byte[] offlineLicenseKeySetId; + + @Nullable private KeyRequest currentKeyRequest; + @Nullable private ProvisionRequest currentProvisionRequest; + + /** + * Instantiates a new DRM session. + * + * @param uuid The UUID of the drm scheme. + * @param mediaDrm The media DRM. + * @param provisioningManager The manager for provisioning. + * @param releaseCallback The {@link ReleaseCallback}. + * @param schemeDatas DRM scheme datas for this session, or null if an {@code + * offlineLicenseKeySetId} is provided or if {@code isPlaceholderSession} is true. + * @param mode The DRM mode. Ignored if {@code isPlaceholderSession} is true. + * @param isPlaceholderSession Whether this session is not expected to acquire any keys. + * @param offlineLicenseKeySetId The offline license key set identifier, or null when not using + * offline keys. + * @param keyRequestParameters Key request parameters. + * @param callback The media DRM callback. + * @param playbackLooper The playback looper. + * @param eventDispatcher The dispatcher for DRM session manager events. + * @param loadErrorHandlingPolicy The {@link LoadErrorHandlingPolicy} for key and provisioning + * requests. + */ + // the constructor does not initialize fields: sessionId + @SuppressWarnings("nullness:initialization.fields.uninitialized") + public DefaultDrmSession( + UUID uuid, + ExoMediaDrm mediaDrm, + ProvisioningManager provisioningManager, + ReleaseCallback releaseCallback, + @Nullable List schemeDatas, + @DefaultDrmSessionManager.Mode int mode, + boolean playClearSamplesWithoutKeys, + boolean isPlaceholderSession, + @Nullable byte[] offlineLicenseKeySetId, + HashMap keyRequestParameters, + MediaDrmCallback callback, + Looper playbackLooper, + EventDispatcher eventDispatcher, + LoadErrorHandlingPolicy loadErrorHandlingPolicy) { + if (mode == DefaultDrmSessionManager.MODE_QUERY + || mode == DefaultDrmSessionManager.MODE_RELEASE) { + Assertions.checkNotNull(offlineLicenseKeySetId); + } + this.uuid = uuid; + this.provisioningManager = provisioningManager; + this.releaseCallback = releaseCallback; + this.mediaDrm = mediaDrm; + this.mode = mode; + this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys; + this.isPlaceholderSession = isPlaceholderSession; + if (offlineLicenseKeySetId != null) { + this.offlineLicenseKeySetId = offlineLicenseKeySetId; + this.schemeDatas = null; + } else { + this.schemeDatas = Collections.unmodifiableList(Assertions.checkNotNull(schemeDatas)); + } + this.keyRequestParameters = keyRequestParameters; + this.callback = callback; + this.eventDispatcher = eventDispatcher; + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + state = STATE_OPENING; + responseHandler = new ResponseHandler(playbackLooper); + } + + public boolean hasSessionId(byte[] sessionId) { + return Arrays.equals(this.sessionId, sessionId); + } + + public void onMediaDrmEvent(int what) { + switch (what) { + case ExoMediaDrm.EVENT_KEY_REQUIRED: + onKeysRequired(); + break; + default: + break; + } + } + + // Provisioning implementation. + + public void provision() { + currentProvisionRequest = mediaDrm.getProvisionRequest(); + Util.castNonNull(requestHandler) + .post( + MSG_PROVISION, + Assertions.checkNotNull(currentProvisionRequest), + /* allowRetry= */ true); + } + + public void onProvisionCompleted() { + if (openInternal(false)) { + doLicense(true); + } + } + + public void onProvisionError(Exception error) { + onError(error); + } + + // DrmSession implementation. + + @Override + @DrmSession.State + public final int getState() { + return state; + } + + @Override + public boolean playClearSamplesWithoutKeys() { + return playClearSamplesWithoutKeys; + } + + @Override + public final @Nullable DrmSessionException getError() { + return state == STATE_ERROR ? lastException : null; + } + + @Override + public final @Nullable T getMediaCrypto() { + return mediaCrypto; + } + + @Override + @Nullable + public Map queryKeyStatus() { + return sessionId == null ? null : mediaDrm.queryKeyStatus(sessionId); + } + + @Override + @Nullable + public byte[] getOfflineLicenseKeySetId() { + return offlineLicenseKeySetId; + } + + @Override + public void acquire() { + Assertions.checkState(referenceCount >= 0); + if (++referenceCount == 1) { + Assertions.checkState(state == STATE_OPENING); + requestHandlerThread = new HandlerThread("DrmRequestHandler"); + requestHandlerThread.start(); + requestHandler = new RequestHandler(requestHandlerThread.getLooper()); + if (openInternal(true)) { + doLicense(true); + } + } + } + + @Override + public void release() { + if (--referenceCount == 0) { + // Assigning null to various non-null variables for clean-up. + state = STATE_RELEASED; + Util.castNonNull(responseHandler).removeCallbacksAndMessages(null); + Util.castNonNull(requestHandler).removeCallbacksAndMessages(null); + requestHandler = null; + Util.castNonNull(requestHandlerThread).quit(); + requestHandlerThread = null; + mediaCrypto = null; + lastException = null; + currentKeyRequest = null; + currentProvisionRequest = null; + if (sessionId != null) { + mediaDrm.closeSession(sessionId); + sessionId = null; + eventDispatcher.dispatch(DefaultDrmSessionEventListener::onDrmSessionReleased); + } + releaseCallback.onSessionReleased(this); + } + } + + // Internal methods. + + /** + * Try to open a session, do provisioning if necessary. + * + * @param allowProvisioning if provisioning is allowed, set this to false when calling from + * processing provision response. + * @return true on success, false otherwise. + */ + @EnsuresNonNullIf(result = true, expression = "sessionId") + private boolean openInternal(boolean allowProvisioning) { + if (isOpen()) { + // Already opened + return true; + } + + try { + sessionId = mediaDrm.openSession(); + mediaCrypto = mediaDrm.createMediaCrypto(sessionId); + eventDispatcher.dispatch(DefaultDrmSessionEventListener::onDrmSessionAcquired); + state = STATE_OPENED; + Assertions.checkNotNull(sessionId); + return true; + } catch (NotProvisionedException e) { + if (allowProvisioning) { + provisioningManager.provisionRequired(this); + } else { + onError(e); + } + } catch (Exception e) { + onError(e); + } + + return false; + } + + private void onProvisionResponse(Object request, Object response) { + if (request != currentProvisionRequest || (state != STATE_OPENING && !isOpen())) { + // This event is stale. + return; + } + currentProvisionRequest = null; + + if (response instanceof Exception) { + provisioningManager.onProvisionError((Exception) response); + return; + } + + try { + mediaDrm.provideProvisionResponse((byte[]) response); + } catch (Exception e) { + provisioningManager.onProvisionError(e); + return; + } + + provisioningManager.onProvisionCompleted(); + } + + @RequiresNonNull("sessionId") + private void doLicense(boolean allowRetry) { + if (isPlaceholderSession) { + return; + } + byte[] sessionId = Util.castNonNull(this.sessionId); + switch (mode) { + case DefaultDrmSessionManager.MODE_PLAYBACK: + case DefaultDrmSessionManager.MODE_QUERY: + if (offlineLicenseKeySetId == null) { + postKeyRequest(sessionId, ExoMediaDrm.KEY_TYPE_STREAMING, allowRetry); + } else if (state == STATE_OPENED_WITH_KEYS || restoreKeys()) { + long licenseDurationRemainingSec = getLicenseDurationRemainingSec(); + if (mode == DefaultDrmSessionManager.MODE_PLAYBACK + && licenseDurationRemainingSec <= MAX_LICENSE_DURATION_TO_RENEW_SECONDS) { + Log.d( + TAG, + "Offline license has expired or will expire soon. " + + "Remaining seconds: " + + licenseDurationRemainingSec); + postKeyRequest(sessionId, ExoMediaDrm.KEY_TYPE_OFFLINE, allowRetry); + } else if (licenseDurationRemainingSec <= 0) { + onError(new KeysExpiredException()); + } else { + state = STATE_OPENED_WITH_KEYS; + eventDispatcher.dispatch(DefaultDrmSessionEventListener::onDrmKeysRestored); + } + } + break; + case DefaultDrmSessionManager.MODE_DOWNLOAD: + if (offlineLicenseKeySetId == null || restoreKeys()) { + postKeyRequest(sessionId, ExoMediaDrm.KEY_TYPE_OFFLINE, allowRetry); + } + break; + case DefaultDrmSessionManager.MODE_RELEASE: + Assertions.checkNotNull(offlineLicenseKeySetId); + Assertions.checkNotNull(this.sessionId); + // It's not necessary to restore the key (and open a session to do that) before releasing it + // but this serves as a good sanity/fast-failure check. + if (restoreKeys()) { + postKeyRequest(offlineLicenseKeySetId, ExoMediaDrm.KEY_TYPE_RELEASE, allowRetry); + } + break; + default: + break; + } + } + + @RequiresNonNull({"sessionId", "offlineLicenseKeySetId"}) + private boolean restoreKeys() { + try { + mediaDrm.restoreKeys(sessionId, offlineLicenseKeySetId); + return true; + } catch (Exception e) { + Log.e(TAG, "Error trying to restore keys.", e); + onError(e); + } + return false; + } + + private long getLicenseDurationRemainingSec() { + if (!C.WIDEVINE_UUID.equals(uuid)) { + return Long.MAX_VALUE; + } + Pair pair = + Assertions.checkNotNull(WidevineUtil.getLicenseDurationRemainingSec(this)); + return Math.min(pair.first, pair.second); + } + + private void postKeyRequest(byte[] scope, int type, boolean allowRetry) { + try { + currentKeyRequest = mediaDrm.getKeyRequest(scope, schemeDatas, type, keyRequestParameters); + Util.castNonNull(requestHandler) + .post(MSG_KEYS, Assertions.checkNotNull(currentKeyRequest), allowRetry); + } catch (Exception e) { + onKeysError(e); + } + } + + private void onKeyResponse(Object request, Object response) { + if (request != currentKeyRequest || !isOpen()) { + // This event is stale. + return; + } + currentKeyRequest = null; + + if (response instanceof Exception) { + onKeysError((Exception) response); + return; + } + + try { + byte[] responseData = (byte[]) response; + if (mode == DefaultDrmSessionManager.MODE_RELEASE) { + mediaDrm.provideKeyResponse(Util.castNonNull(offlineLicenseKeySetId), responseData); + eventDispatcher.dispatch(DefaultDrmSessionEventListener::onDrmKeysRestored); + } else { + byte[] keySetId = mediaDrm.provideKeyResponse(sessionId, responseData); + if ((mode == DefaultDrmSessionManager.MODE_DOWNLOAD + || (mode == DefaultDrmSessionManager.MODE_PLAYBACK + && offlineLicenseKeySetId != null)) + && keySetId != null + && keySetId.length != 0) { + offlineLicenseKeySetId = keySetId; + } + state = STATE_OPENED_WITH_KEYS; + eventDispatcher.dispatch(DefaultDrmSessionEventListener::onDrmKeysLoaded); + } + } catch (Exception e) { + onKeysError(e); + } + } + + private void onKeysRequired() { + if (mode == DefaultDrmSessionManager.MODE_PLAYBACK && state == STATE_OPENED_WITH_KEYS) { + Util.castNonNull(sessionId); + doLicense(/* allowRetry= */ false); + } + } + + private void onKeysError(Exception e) { + if (e instanceof NotProvisionedException) { + provisioningManager.provisionRequired(this); + } else { + onError(e); + } + } + + private void onError(final Exception e) { + lastException = new DrmSessionException(e); + eventDispatcher.dispatch(listener -> listener.onDrmSessionManagerError(e)); + if (state != STATE_OPENED_WITH_KEYS) { + state = STATE_ERROR; + } + } + + @EnsuresNonNullIf(result = true, expression = "sessionId") + @SuppressWarnings("contracts.conditional.postcondition.not.satisfied") + private boolean isOpen() { + return state == STATE_OPENED || state == STATE_OPENED_WITH_KEYS; + } + + // Internal classes. + + @SuppressLint("HandlerLeak") + private class ResponseHandler extends Handler { + + public ResponseHandler(Looper looper) { + super(looper); + } + + @Override + @SuppressWarnings("unchecked") + public void handleMessage(Message msg) { + Pair requestAndResponse = (Pair) msg.obj; + Object request = requestAndResponse.first; + Object response = requestAndResponse.second; + switch (msg.what) { + case MSG_PROVISION: + onProvisionResponse(request, response); + break; + case MSG_KEYS: + onKeyResponse(request, response); + break; + default: + break; + } + } + } + + @SuppressLint("HandlerLeak") + private class RequestHandler extends Handler { + + public RequestHandler(Looper backgroundLooper) { + super(backgroundLooper); + } + + void post(int what, Object request, boolean allowRetry) { + RequestTask requestTask = + new RequestTask(allowRetry, /* startTimeMs= */ SystemClock.elapsedRealtime(), request); + obtainMessage(what, requestTask).sendToTarget(); + } + + @Override + public void handleMessage(Message msg) { + RequestTask requestTask = (RequestTask) msg.obj; + Object response; + try { + switch (msg.what) { + case MSG_PROVISION: + response = + callback.executeProvisionRequest(uuid, (ProvisionRequest) requestTask.request); + break; + case MSG_KEYS: + response = callback.executeKeyRequest(uuid, (KeyRequest) requestTask.request); + break; + default: + throw new RuntimeException(); + } + } catch (Exception e) { + if (maybeRetryRequest(msg, e)) { + return; + } + response = e; + } + responseHandler + .obtainMessage(msg.what, Pair.create(requestTask.request, response)) + .sendToTarget(); + } + + private boolean maybeRetryRequest(Message originalMsg, Exception e) { + RequestTask requestTask = (RequestTask) originalMsg.obj; + if (!requestTask.allowRetry) { + return false; + } + requestTask.errorCount++; + if (requestTask.errorCount + > loadErrorHandlingPolicy.getMinimumLoadableRetryCount(C.DATA_TYPE_DRM)) { + return false; + } + IOException ioException = + e instanceof IOException ? (IOException) e : new UnexpectedDrmSessionException(e); + long retryDelayMs = + loadErrorHandlingPolicy.getRetryDelayMsFor( + C.DATA_TYPE_DRM, + /* loadDurationMs= */ SystemClock.elapsedRealtime() - requestTask.startTimeMs, + ioException, + requestTask.errorCount); + if (retryDelayMs == C.TIME_UNSET) { + // The error is fatal. + return false; + } + sendMessageDelayed(Message.obtain(originalMsg), retryDelayMs); + return true; + } + } + + private static final class RequestTask { + + public final boolean allowRetry; + public final long startTimeMs; + public final Object request; + public int errorCount; + + public RequestTask(boolean allowRetry, long startTimeMs, Object request) { + this.allowRetry = allowRetry; + this.startTimeMs = startTimeMs; + this.request = request; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DefaultDrmSessionEventListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DefaultDrmSessionEventListener.java new file mode 100644 index 0000000000..35bc7faf28 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DefaultDrmSessionEventListener.java @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; + +/** Listener of {@link DefaultDrmSessionManager} events. */ +public interface DefaultDrmSessionEventListener { + + /** Called each time a drm session is acquired. */ + default void onDrmSessionAcquired() {} + + /** Called each time keys are loaded. */ + default void onDrmKeysLoaded() {} + + /** + * Called when a drm error occurs. + * + *

This method being called does not indicate that playback has failed, or that it will fail. + * The player may be able to recover from the error and continue. Hence applications should + * not implement this method to display a user visible error or initiate an application + * level retry ({@link Player.EventListener#onPlayerError} is the appropriate place to implement + * such behavior). This method is called to provide the application with an opportunity to log the + * error if it wishes to do so. + * + * @param error The corresponding exception. + */ + default void onDrmSessionManagerError(Exception error) {} + + /** Called each time offline keys are restored. */ + default void onDrmKeysRestored() {} + + /** Called each time offline keys are removed. */ + default void onDrmKeysRemoved() {} + + /** Called each time a drm session is released. */ + default void onDrmSessionReleased() {} +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DefaultDrmSessionManager.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DefaultDrmSessionManager.java new file mode 100644 index 0000000000..683862b99a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DefaultDrmSessionManager.java @@ -0,0 +1,691 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.annotation.SuppressLint; +import android.annotation.TargetApi; +import android.os.Handler; +import android.os.Looper; +import android.os.Message; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData.SchemeData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession.DrmSessionException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaDrm.OnEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultLoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.UUID; + +/** A {@link DrmSessionManager} that supports playbacks using {@link ExoMediaDrm}. */ +@TargetApi(18) +public class DefaultDrmSessionManager implements DrmSessionManager { + + /** + * Builder for {@link DefaultDrmSessionManager} instances. + * + *

See {@link #Builder} for the list of default values. + */ + public static final class Builder { + + private final HashMap keyRequestParameters; + private UUID uuid; + private ExoMediaDrm.Provider exoMediaDrmProvider; + private boolean multiSession; + private int[] useDrmSessionsForClearContentTrackTypes; + private boolean playClearSamplesWithoutKeys; + private LoadErrorHandlingPolicy loadErrorHandlingPolicy; + + /** + * Creates a builder with default values. The default values are: + * + *

    + *
  • {@link #setKeyRequestParameters keyRequestParameters}: An empty map. + *
  • {@link #setUuidAndExoMediaDrmProvider UUID}: {@link C#WIDEVINE_UUID}. + *
  • {@link #setUuidAndExoMediaDrmProvider ExoMediaDrm.Provider}: {@link + * FrameworkMediaDrm#DEFAULT_PROVIDER}. + *
  • {@link #setMultiSession multiSession}: {@code false}. + *
  • {@link #setUseDrmSessionsForClearContent useDrmSessionsForClearContent}: No tracks. + *
  • {@link #setPlayClearSamplesWithoutKeys playClearSamplesWithoutKeys}: {@code false}. + *
  • {@link #setLoadErrorHandlingPolicy LoadErrorHandlingPolicy}: {@link + * DefaultLoadErrorHandlingPolicy}. + *
+ */ + @SuppressWarnings("unchecked") + public Builder() { + keyRequestParameters = new HashMap<>(); + uuid = C.WIDEVINE_UUID; + exoMediaDrmProvider = (ExoMediaDrm.Provider) FrameworkMediaDrm.DEFAULT_PROVIDER; + loadErrorHandlingPolicy = new DefaultLoadErrorHandlingPolicy(); + useDrmSessionsForClearContentTrackTypes = new int[0]; + } + + /** + * Sets the key request parameters to pass as the last argument to {@link + * ExoMediaDrm#getKeyRequest(byte[], List, int, HashMap)}. + * + *

Custom data for PlayReady should be set under {@link #PLAYREADY_CUSTOM_DATA_KEY}. + * + * @param keyRequestParameters A map with parameters. + * @return This builder. + */ + public Builder setKeyRequestParameters(Map keyRequestParameters) { + this.keyRequestParameters.clear(); + this.keyRequestParameters.putAll(Assertions.checkNotNull(keyRequestParameters)); + return this; + } + + /** + * Sets the UUID of the DRM scheme and the {@link ExoMediaDrm.Provider} to use. + * + * @param uuid The UUID of the DRM scheme. + * @param exoMediaDrmProvider The {@link ExoMediaDrm.Provider}. + * @return This builder. + */ + @SuppressWarnings({"rawtypes", "unchecked"}) + public Builder setUuidAndExoMediaDrmProvider( + UUID uuid, ExoMediaDrm.Provider exoMediaDrmProvider) { + this.uuid = Assertions.checkNotNull(uuid); + this.exoMediaDrmProvider = Assertions.checkNotNull(exoMediaDrmProvider); + return this; + } + + /** + * Sets whether this session manager is allowed to acquire multiple simultaneous sessions. + * + *

Users should pass false when a single key request will obtain all keys required to decrypt + * the associated content. {@code multiSession} is required when content uses key rotation. + * + * @param multiSession Whether this session manager is allowed to acquire multiple simultaneous + * sessions. + * @return This builder. + */ + public Builder setMultiSession(boolean multiSession) { + this.multiSession = multiSession; + return this; + } + + /** + * Sets whether this session manager should attach {@link DrmSession DrmSessions} to the clear + * sections of the media content. + * + *

Using {@link DrmSession DrmSessions} for clear content avoids the recreation of decoders + * when transitioning between clear and encrypted sections of content. + * + * @param useDrmSessionsForClearContentTrackTypes The track types ({@link C#TRACK_TYPE_AUDIO} + * and/or {@link C#TRACK_TYPE_VIDEO}) for which to use a {@link DrmSession} regardless of + * whether the content is clear or encrypted. + * @return This builder. + * @throws IllegalArgumentException If {@code useDrmSessionsForClearContentTrackTypes} contains + * track types other than {@link C#TRACK_TYPE_AUDIO} and {@link C#TRACK_TYPE_VIDEO}. + */ + public Builder setUseDrmSessionsForClearContent( + int... useDrmSessionsForClearContentTrackTypes) { + for (int trackType : useDrmSessionsForClearContentTrackTypes) { + Assertions.checkArgument( + trackType == C.TRACK_TYPE_VIDEO || trackType == C.TRACK_TYPE_AUDIO); + } + this.useDrmSessionsForClearContentTrackTypes = + useDrmSessionsForClearContentTrackTypes.clone(); + return this; + } + + /** + * Sets whether clear samples within protected content should be played when keys for the + * encrypted part of the content have yet to be loaded. + * + * @param playClearSamplesWithoutKeys Whether clear samples within protected content should be + * played when keys for the encrypted part of the content have yet to be loaded. + * @return This builder. + */ + public Builder setPlayClearSamplesWithoutKeys(boolean playClearSamplesWithoutKeys) { + this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys; + return this; + } + + /** + * Sets the {@link LoadErrorHandlingPolicy} for key and provisioning requests. + * + * @param loadErrorHandlingPolicy A {@link LoadErrorHandlingPolicy}. + * @return This builder. + */ + public Builder setLoadErrorHandlingPolicy(LoadErrorHandlingPolicy loadErrorHandlingPolicy) { + this.loadErrorHandlingPolicy = Assertions.checkNotNull(loadErrorHandlingPolicy); + return this; + } + + /** Builds a {@link DefaultDrmSessionManager} instance. */ + public DefaultDrmSessionManager build(MediaDrmCallback mediaDrmCallback) { + return new DefaultDrmSessionManager<>( + uuid, + exoMediaDrmProvider, + mediaDrmCallback, + keyRequestParameters, + multiSession, + useDrmSessionsForClearContentTrackTypes, + playClearSamplesWithoutKeys, + loadErrorHandlingPolicy); + } + } + + /** + * Signals that the {@link DrmInitData} passed to {@link #acquireSession} does not contain does + * not contain scheme data for the required UUID. + */ + public static final class MissingSchemeDataException extends Exception { + + private MissingSchemeDataException(UUID uuid) { + super("Media does not support uuid: " + uuid); + } + } + + /** + * A key for specifying PlayReady custom data in the key request parameters passed to {@link + * Builder#setKeyRequestParameters(Map)}. + */ + public static final String PLAYREADY_CUSTOM_DATA_KEY = "PRCustomData"; + + /** + * Determines the action to be done after a session acquired. One of {@link #MODE_PLAYBACK}, + * {@link #MODE_QUERY}, {@link #MODE_DOWNLOAD} or {@link #MODE_RELEASE}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({MODE_PLAYBACK, MODE_QUERY, MODE_DOWNLOAD, MODE_RELEASE}) + public @interface Mode {} + /** + * Loads and refreshes (if necessary) a license for playback. Supports streaming and offline + * licenses. + */ + public static final int MODE_PLAYBACK = 0; + /** Restores an offline license to allow its status to be queried. */ + public static final int MODE_QUERY = 1; + /** Downloads an offline license or renews an existing one. */ + public static final int MODE_DOWNLOAD = 2; + /** Releases an existing offline license. */ + public static final int MODE_RELEASE = 3; + /** Number of times to retry for initial provisioning and key request for reporting error. */ + public static final int INITIAL_DRM_REQUEST_RETRY_COUNT = 3; + + private static final String TAG = "DefaultDrmSessionMgr"; + + private final UUID uuid; + private final ExoMediaDrm.Provider exoMediaDrmProvider; + private final MediaDrmCallback callback; + private final HashMap keyRequestParameters; + private final EventDispatcher eventDispatcher; + private final boolean multiSession; + private final int[] useDrmSessionsForClearContentTrackTypes; + private final boolean playClearSamplesWithoutKeys; + private final ProvisioningManagerImpl provisioningManagerImpl; + private final LoadErrorHandlingPolicy loadErrorHandlingPolicy; + + private final List> sessions; + private final List> provisioningSessions; + + private int prepareCallsCount; + @Nullable private ExoMediaDrm exoMediaDrm; + @Nullable private DefaultDrmSession placeholderDrmSession; + @Nullable private DefaultDrmSession noMultiSessionDrmSession; + @Nullable private Looper playbackLooper; + private int mode; + @Nullable private byte[] offlineLicenseKeySetId; + + /* package */ volatile @Nullable MediaDrmHandler mediaDrmHandler; + + /** + * @param uuid The UUID of the drm scheme. + * @param exoMediaDrm An underlying {@link ExoMediaDrm} for use by the manager. + * @param callback Performs key and provisioning requests. + * @param keyRequestParameters An optional map of parameters to pass as the last argument to + * {@link ExoMediaDrm#getKeyRequest(byte[], List, int, HashMap)}. May be null. + * @deprecated Use {@link Builder} instead. + */ + @SuppressWarnings("deprecation") + @Deprecated + public DefaultDrmSessionManager( + UUID uuid, + ExoMediaDrm exoMediaDrm, + MediaDrmCallback callback, + @Nullable HashMap keyRequestParameters) { + this( + uuid, + exoMediaDrm, + callback, + keyRequestParameters == null ? new HashMap<>() : keyRequestParameters, + /* multiSession= */ false, + INITIAL_DRM_REQUEST_RETRY_COUNT); + } + + /** + * @param uuid The UUID of the drm scheme. + * @param exoMediaDrm An underlying {@link ExoMediaDrm} for use by the manager. + * @param callback Performs key and provisioning requests. + * @param keyRequestParameters An optional map of parameters to pass as the last argument to + * {@link ExoMediaDrm#getKeyRequest(byte[], List, int, HashMap)}. May be null. + * @param multiSession A boolean that specify whether multiple key session support is enabled. + * Default is false. + * @deprecated Use {@link Builder} instead. + */ + @Deprecated + public DefaultDrmSessionManager( + UUID uuid, + ExoMediaDrm exoMediaDrm, + MediaDrmCallback callback, + @Nullable HashMap keyRequestParameters, + boolean multiSession) { + this( + uuid, + exoMediaDrm, + callback, + keyRequestParameters == null ? new HashMap<>() : keyRequestParameters, + multiSession, + INITIAL_DRM_REQUEST_RETRY_COUNT); + } + + /** + * @param uuid The UUID of the drm scheme. + * @param exoMediaDrm An underlying {@link ExoMediaDrm} for use by the manager. + * @param callback Performs key and provisioning requests. + * @param keyRequestParameters An optional map of parameters to pass as the last argument to + * {@link ExoMediaDrm#getKeyRequest(byte[], List, int, HashMap)}. May be null. + * @param multiSession A boolean that specify whether multiple key session support is enabled. + * Default is false. + * @param initialDrmRequestRetryCount The number of times to retry for initial provisioning and + * key request before reporting error. + * @deprecated Use {@link Builder} instead. + */ + @Deprecated + public DefaultDrmSessionManager( + UUID uuid, + ExoMediaDrm exoMediaDrm, + MediaDrmCallback callback, + @Nullable HashMap keyRequestParameters, + boolean multiSession, + int initialDrmRequestRetryCount) { + this( + uuid, + new ExoMediaDrm.AppManagedProvider<>(exoMediaDrm), + callback, + keyRequestParameters == null ? new HashMap<>() : keyRequestParameters, + multiSession, + /* useDrmSessionsForClearContentTrackTypes= */ new int[0], + /* playClearSamplesWithoutKeys= */ false, + new DefaultLoadErrorHandlingPolicy(initialDrmRequestRetryCount)); + } + + // the constructor does not initialize fields: offlineLicenseKeySetId + @SuppressWarnings("nullness:initialization.fields.uninitialized") + private DefaultDrmSessionManager( + UUID uuid, + ExoMediaDrm.Provider exoMediaDrmProvider, + MediaDrmCallback callback, + HashMap keyRequestParameters, + boolean multiSession, + int[] useDrmSessionsForClearContentTrackTypes, + boolean playClearSamplesWithoutKeys, + LoadErrorHandlingPolicy loadErrorHandlingPolicy) { + Assertions.checkNotNull(uuid); + Assertions.checkArgument(!C.COMMON_PSSH_UUID.equals(uuid), "Use C.CLEARKEY_UUID instead"); + this.uuid = uuid; + this.exoMediaDrmProvider = exoMediaDrmProvider; + this.callback = callback; + this.keyRequestParameters = keyRequestParameters; + this.eventDispatcher = new EventDispatcher<>(); + this.multiSession = multiSession; + this.useDrmSessionsForClearContentTrackTypes = useDrmSessionsForClearContentTrackTypes; + this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys; + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + provisioningManagerImpl = new ProvisioningManagerImpl(); + mode = MODE_PLAYBACK; + sessions = new ArrayList<>(); + provisioningSessions = new ArrayList<>(); + } + + /** + * Adds a {@link DefaultDrmSessionEventListener} to listen to drm session events. + * + * @param handler A handler to use when delivering events to {@code eventListener}. + * @param eventListener A listener of events. + */ + public final void addListener(Handler handler, DefaultDrmSessionEventListener eventListener) { + eventDispatcher.addListener(handler, eventListener); + } + + /** + * Removes a {@link DefaultDrmSessionEventListener} from the list of drm session event listeners. + * + * @param eventListener The listener to remove. + */ + public final void removeListener(DefaultDrmSessionEventListener eventListener) { + eventDispatcher.removeListener(eventListener); + } + + /** + * Sets the mode, which determines the role of sessions acquired from the instance. This must be + * called before {@link #acquireSession(Looper, DrmInitData)} or {@link + * #acquirePlaceholderSession} is called. + * + *

By default, the mode is {@link #MODE_PLAYBACK} and a streaming license is requested when + * required. + * + *

{@code mode} must be one of these: + * + *

    + *
  • {@link #MODE_PLAYBACK}: If {@code offlineLicenseKeySetId} is null, a streaming license is + * requested otherwise the offline license is restored. + *
  • {@link #MODE_QUERY}: {@code offlineLicenseKeySetId} can not be null. The offline license + * is restored. + *
  • {@link #MODE_DOWNLOAD}: If {@code offlineLicenseKeySetId} is null, an offline license is + * requested otherwise the offline license is renewed. + *
  • {@link #MODE_RELEASE}: {@code offlineLicenseKeySetId} can not be null. The offline + * license is released. + *
+ * + * @param mode The mode to be set. + * @param offlineLicenseKeySetId The key set id of the license to be used with the given mode. + */ + public void setMode(@Mode int mode, @Nullable byte[] offlineLicenseKeySetId) { + Assertions.checkState(sessions.isEmpty()); + if (mode == MODE_QUERY || mode == MODE_RELEASE) { + Assertions.checkNotNull(offlineLicenseKeySetId); + } + this.mode = mode; + this.offlineLicenseKeySetId = offlineLicenseKeySetId; + } + + // DrmSessionManager implementation. + + @Override + public final void prepare() { + if (prepareCallsCount++ == 0) { + Assertions.checkState(exoMediaDrm == null); + exoMediaDrm = exoMediaDrmProvider.acquireExoMediaDrm(uuid); + exoMediaDrm.setOnEventListener(new MediaDrmEventListener()); + } + } + + @Override + public final void release() { + if (--prepareCallsCount == 0) { + Assertions.checkNotNull(exoMediaDrm).release(); + exoMediaDrm = null; + } + } + + @Override + public boolean canAcquireSession(DrmInitData drmInitData) { + if (offlineLicenseKeySetId != null) { + // An offline license can be restored so a session can always be acquired. + return true; + } + List schemeDatas = getSchemeDatas(drmInitData, uuid, true); + if (schemeDatas.isEmpty()) { + if (drmInitData.schemeDataCount == 1 && drmInitData.get(0).matches(C.COMMON_PSSH_UUID)) { + // Assume scheme specific data will be added before the session is opened. + Log.w( + TAG, "DrmInitData only contains common PSSH SchemeData. Assuming support for: " + uuid); + } else { + // No data for this manager's scheme. + return false; + } + } + String schemeType = drmInitData.schemeType; + if (schemeType == null || C.CENC_TYPE_cenc.equals(schemeType)) { + // If there is no scheme information, assume patternless AES-CTR. + return true; + } else if (C.CENC_TYPE_cbc1.equals(schemeType) + || C.CENC_TYPE_cbcs.equals(schemeType) + || C.CENC_TYPE_cens.equals(schemeType)) { + // API support for AES-CBC and pattern encryption was added in API 24. However, the + // implementation was not stable until API 25. + return Util.SDK_INT >= 25; + } + // Unknown schemes, assume one of them is supported. + return true; + } + + @Override + @Nullable + public DrmSession acquirePlaceholderSession(Looper playbackLooper, int trackType) { + assertExpectedPlaybackLooper(playbackLooper); + ExoMediaDrm exoMediaDrm = Assertions.checkNotNull(this.exoMediaDrm); + boolean avoidPlaceholderDrmSessions = + FrameworkMediaCrypto.class.equals(exoMediaDrm.getExoMediaCryptoType()) + && FrameworkMediaCrypto.WORKAROUND_DEVICE_NEEDS_KEYS_TO_CONFIGURE_CODEC; + // Avoid attaching a session to sparse formats. + if (avoidPlaceholderDrmSessions + || Util.linearSearch(useDrmSessionsForClearContentTrackTypes, trackType) == C.INDEX_UNSET + || exoMediaDrm.getExoMediaCryptoType() == null) { + return null; + } + maybeCreateMediaDrmHandler(playbackLooper); + if (placeholderDrmSession == null) { + DefaultDrmSession placeholderDrmSession = + createNewDefaultSession( + /* schemeDatas= */ Collections.emptyList(), /* isPlaceholderSession= */ true); + sessions.add(placeholderDrmSession); + this.placeholderDrmSession = placeholderDrmSession; + } + placeholderDrmSession.acquire(); + return placeholderDrmSession; + } + + @Override + public DrmSession acquireSession(Looper playbackLooper, DrmInitData drmInitData) { + assertExpectedPlaybackLooper(playbackLooper); + maybeCreateMediaDrmHandler(playbackLooper); + + @Nullable List schemeDatas = null; + if (offlineLicenseKeySetId == null) { + schemeDatas = getSchemeDatas(drmInitData, uuid, false); + if (schemeDatas.isEmpty()) { + final MissingSchemeDataException error = new MissingSchemeDataException(uuid); + eventDispatcher.dispatch(listener -> listener.onDrmSessionManagerError(error)); + return new ErrorStateDrmSession<>(new DrmSessionException(error)); + } + } + + @Nullable DefaultDrmSession session; + if (!multiSession) { + session = noMultiSessionDrmSession; + } else { + // Only use an existing session if it has matching init data. + session = null; + for (DefaultDrmSession existingSession : sessions) { + if (Util.areEqual(existingSession.schemeDatas, schemeDatas)) { + session = existingSession; + break; + } + } + } + + if (session == null) { + // Create a new session. + session = createNewDefaultSession(schemeDatas, /* isPlaceholderSession= */ false); + if (!multiSession) { + noMultiSessionDrmSession = session; + } + sessions.add(session); + } + session.acquire(); + return session; + } + + @Override + @Nullable + public Class getExoMediaCryptoType(DrmInitData drmInitData) { + return canAcquireSession(drmInitData) + ? Assertions.checkNotNull(exoMediaDrm).getExoMediaCryptoType() + : null; + } + + // Internal methods. + + private void assertExpectedPlaybackLooper(Looper playbackLooper) { + Assertions.checkState(this.playbackLooper == null || this.playbackLooper == playbackLooper); + this.playbackLooper = playbackLooper; + } + + private void maybeCreateMediaDrmHandler(Looper playbackLooper) { + if (mediaDrmHandler == null) { + mediaDrmHandler = new MediaDrmHandler(playbackLooper); + } + } + + private DefaultDrmSession createNewDefaultSession( + @Nullable List schemeDatas, boolean isPlaceholderSession) { + Assertions.checkNotNull(exoMediaDrm); + // Placeholder sessions should always play clear samples without keys. + boolean playClearSamplesWithoutKeys = this.playClearSamplesWithoutKeys | isPlaceholderSession; + return new DefaultDrmSession<>( + uuid, + exoMediaDrm, + /* provisioningManager= */ provisioningManagerImpl, + /* releaseCallback= */ this::onSessionReleased, + schemeDatas, + mode, + playClearSamplesWithoutKeys, + isPlaceholderSession, + offlineLicenseKeySetId, + keyRequestParameters, + callback, + Assertions.checkNotNull(playbackLooper), + eventDispatcher, + loadErrorHandlingPolicy); + } + + private void onSessionReleased(DefaultDrmSession drmSession) { + sessions.remove(drmSession); + if (placeholderDrmSession == drmSession) { + placeholderDrmSession = null; + } + if (noMultiSessionDrmSession == drmSession) { + noMultiSessionDrmSession = null; + } + if (provisioningSessions.size() > 1 && provisioningSessions.get(0) == drmSession) { + // Other sessions were waiting for the released session to complete a provision operation. + // We need to have one of those sessions perform the provision operation instead. + provisioningSessions.get(1).provision(); + } + provisioningSessions.remove(drmSession); + } + + /** + * Extracts {@link SchemeData} instances suitable for the given DRM scheme {@link UUID}. + * + * @param drmInitData The {@link DrmInitData} from which to extract the {@link SchemeData}. + * @param uuid The UUID. + * @param allowMissingData Whether a {@link SchemeData} with null {@link SchemeData#data} may be + * returned. + * @return The extracted {@link SchemeData} instances, or an empty list if no suitable data is + * present. + */ + private static List getSchemeDatas( + DrmInitData drmInitData, UUID uuid, boolean allowMissingData) { + // Look for matching scheme data (matching the Common PSSH box for ClearKey). + List matchingSchemeDatas = new ArrayList<>(drmInitData.schemeDataCount); + for (int i = 0; i < drmInitData.schemeDataCount; i++) { + SchemeData schemeData = drmInitData.get(i); + boolean uuidMatches = + schemeData.matches(uuid) + || (C.CLEARKEY_UUID.equals(uuid) && schemeData.matches(C.COMMON_PSSH_UUID)); + if (uuidMatches && (schemeData.data != null || allowMissingData)) { + matchingSchemeDatas.add(schemeData); + } + } + return matchingSchemeDatas; + } + + @SuppressLint("HandlerLeak") + private class MediaDrmHandler extends Handler { + + public MediaDrmHandler(Looper looper) { + super(looper); + } + + @Override + public void handleMessage(Message msg) { + byte[] sessionId = (byte[]) msg.obj; + if (sessionId == null) { + // The event is not associated with any particular session. + return; + } + for (DefaultDrmSession session : sessions) { + if (session.hasSessionId(sessionId)) { + session.onMediaDrmEvent(msg.what); + return; + } + } + } + } + + private class ProvisioningManagerImpl implements DefaultDrmSession.ProvisioningManager { + @Override + public void provisionRequired(DefaultDrmSession session) { + if (provisioningSessions.contains(session)) { + // The session has already requested provisioning. + return; + } + provisioningSessions.add(session); + if (provisioningSessions.size() == 1) { + // This is the first session requesting provisioning, so have it perform the operation. + session.provision(); + } + } + + @Override + public void onProvisionCompleted() { + for (DefaultDrmSession session : provisioningSessions) { + session.onProvisionCompleted(); + } + provisioningSessions.clear(); + } + + @Override + public void onProvisionError(Exception error) { + for (DefaultDrmSession session : provisioningSessions) { + session.onProvisionError(error); + } + provisioningSessions.clear(); + } + } + + private class MediaDrmEventListener implements OnEventListener { + + @Override + public void onEvent( + ExoMediaDrm md, + @Nullable byte[] sessionId, + int event, + int extra, + @Nullable byte[] data) { + Assertions.checkNotNull(mediaDrmHandler).obtainMessage(event, sessionId).sendToTarget(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DrmInitData.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DrmInitData.java new file mode 100644 index 0000000000..2a25d1deb4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DrmInitData.java @@ -0,0 +1,425 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.os.Parcel; +import android.os.Parcelable; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData.SchemeData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Comparator; +import java.util.List; +import java.util.UUID; + +/** + * Initialization data for one or more DRM schemes. + */ +public final class DrmInitData implements Comparator, Parcelable { + + /** + * Merges {@link DrmInitData} obtained from a media manifest and a media stream. + * + *

The result is generated as follows. + * + *

    + *
  1. Include all {@link SchemeData}s from {@code manifestData} where {@link + * SchemeData#hasData()} is true. + *
  2. Include all {@link SchemeData}s in {@code mediaData} where {@link SchemeData#hasData()} + * is true and for which we did not include an entry from the manifest targeting the same + * UUID. + *
  3. If available, the scheme type from the manifest is used. If not, the scheme type from the + * media is used. + *
+ * + * @param manifestData DRM session acquisition data obtained from the manifest. + * @param mediaData DRM session acquisition data obtained from the media. + * @return A {@link DrmInitData} obtained from merging a media manifest and a media stream. + */ + public static @Nullable DrmInitData createSessionCreationData( + @Nullable DrmInitData manifestData, @Nullable DrmInitData mediaData) { + ArrayList result = new ArrayList<>(); + String schemeType = null; + if (manifestData != null) { + schemeType = manifestData.schemeType; + for (SchemeData data : manifestData.schemeDatas) { + if (data.hasData()) { + result.add(data); + } + } + } + + if (mediaData != null) { + if (schemeType == null) { + schemeType = mediaData.schemeType; + } + int manifestDatasCount = result.size(); + for (SchemeData data : mediaData.schemeDatas) { + if (data.hasData() && !containsSchemeDataWithUuid(result, manifestDatasCount, data.uuid)) { + result.add(data); + } + } + } + + return result.isEmpty() ? null : new DrmInitData(schemeType, result); + } + + private final SchemeData[] schemeDatas; + + // Lazily initialized hashcode. + private int hashCode; + + /** The protection scheme type, or null if not applicable or unknown. */ + @Nullable public final String schemeType; + + /** + * Number of {@link SchemeData}s. + */ + public final int schemeDataCount; + + /** + * @param schemeDatas Scheme initialization data for possibly multiple DRM schemes. + */ + public DrmInitData(List schemeDatas) { + this(null, false, schemeDatas.toArray(new SchemeData[0])); + } + + /** + * @param schemeType See {@link #schemeType}. + * @param schemeDatas Scheme initialization data for possibly multiple DRM schemes. + */ + public DrmInitData(@Nullable String schemeType, List schemeDatas) { + this(schemeType, false, schemeDatas.toArray(new SchemeData[0])); + } + + /** + * @param schemeDatas Scheme initialization data for possibly multiple DRM schemes. + */ + public DrmInitData(SchemeData... schemeDatas) { + this(null, schemeDatas); + } + + /** + * @param schemeType See {@link #schemeType}. + * @param schemeDatas Scheme initialization data for possibly multiple DRM schemes. + */ + public DrmInitData(@Nullable String schemeType, SchemeData... schemeDatas) { + this(schemeType, true, schemeDatas); + } + + private DrmInitData(@Nullable String schemeType, boolean cloneSchemeDatas, + SchemeData... schemeDatas) { + this.schemeType = schemeType; + if (cloneSchemeDatas) { + schemeDatas = schemeDatas.clone(); + } + this.schemeDatas = schemeDatas; + schemeDataCount = schemeDatas.length; + // Sorting ensures that universal scheme data (i.e. data that applies to all schemes) is matched + // last. It's also required by the equals and hashcode implementations. + Arrays.sort(this.schemeDatas, this); + } + + /* package */ + DrmInitData(Parcel in) { + schemeType = in.readString(); + schemeDatas = Util.castNonNull(in.createTypedArray(SchemeData.CREATOR)); + schemeDataCount = schemeDatas.length; + } + + /** + * Retrieves data for a given DRM scheme, specified by its UUID. + * + * @deprecated Use {@link #get(int)} and {@link SchemeData#matches(UUID)} instead. + * @param uuid The DRM scheme's UUID. + * @return The initialization data for the scheme, or null if the scheme is not supported. + */ + @Deprecated + @Nullable + public SchemeData get(UUID uuid) { + for (SchemeData schemeData : schemeDatas) { + if (schemeData.matches(uuid)) { + return schemeData; + } + } + return null; + } + + /** + * Retrieves the {@link SchemeData} at a given index. + * + * @param index The index of the scheme to return. Must not exceed {@link #schemeDataCount}. + * @return The {@link SchemeData} at the specified index. + */ + public SchemeData get(int index) { + return schemeDatas[index]; + } + + /** + * Returns a copy with the specified protection scheme type. + * + * @param schemeType A protection scheme type. May be null. + * @return A copy with the specified protection scheme type. + */ + public DrmInitData copyWithSchemeType(@Nullable String schemeType) { + if (Util.areEqual(this.schemeType, schemeType)) { + return this; + } + return new DrmInitData(schemeType, false, schemeDatas); + } + + /** + * Returns an instance containing the {@link #schemeDatas} from both this and {@code other}. The + * {@link #schemeType} of the instances being merged must either match, or at least one scheme + * type must be {@code null}. + * + * @param drmInitData The instance to merge. + * @return The merged result. + */ + public DrmInitData merge(DrmInitData drmInitData) { + Assertions.checkState( + schemeType == null + || drmInitData.schemeType == null + || TextUtils.equals(schemeType, drmInitData.schemeType)); + String mergedSchemeType = schemeType != null ? this.schemeType : drmInitData.schemeType; + SchemeData[] mergedSchemeDatas = + Util.nullSafeArrayConcatenation(schemeDatas, drmInitData.schemeDatas); + return new DrmInitData(mergedSchemeType, mergedSchemeDatas); + } + + @Override + public int hashCode() { + if (hashCode == 0) { + int result = (schemeType == null ? 0 : schemeType.hashCode()); + result = 31 * result + Arrays.hashCode(schemeDatas); + hashCode = result; + } + return hashCode; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + DrmInitData other = (DrmInitData) obj; + return Util.areEqual(schemeType, other.schemeType) + && Arrays.equals(schemeDatas, other.schemeDatas); + } + + @Override + public int compare(SchemeData first, SchemeData second) { + return C.UUID_NIL.equals(first.uuid) ? (C.UUID_NIL.equals(second.uuid) ? 0 : 1) + : first.uuid.compareTo(second.uuid); + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(schemeType); + dest.writeTypedArray(schemeDatas, 0); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public DrmInitData createFromParcel(Parcel in) { + return new DrmInitData(in); + } + + @Override + public DrmInitData[] newArray(int size) { + return new DrmInitData[size]; + } + + }; + + // Internal methods. + + private static boolean containsSchemeDataWithUuid( + ArrayList datas, int limit, UUID uuid) { + for (int i = 0; i < limit; i++) { + if (datas.get(i).uuid.equals(uuid)) { + return true; + } + } + return false; + } + + /** + * Scheme initialization data. + */ + public static final class SchemeData implements Parcelable { + + // Lazily initialized hashcode. + private int hashCode; + + /** + * The {@link UUID} of the DRM scheme, or {@link C#UUID_NIL} if the data is universal (i.e. + * applies to all schemes). + */ + private final UUID uuid; + /** The URL of the server to which license requests should be made. May be null if unknown. */ + @Nullable public final String licenseServerUrl; + /** The mimeType of {@link #data}. */ + public final String mimeType; + /** The initialization data. May be null for scheme support checks only. */ + @Nullable public final byte[] data; + + /** + * @param uuid The {@link UUID} of the DRM scheme, or {@link C#UUID_NIL} if the data is + * universal (i.e. applies to all schemes). + * @param mimeType See {@link #mimeType}. + * @param data See {@link #data}. + */ + public SchemeData(UUID uuid, String mimeType, @Nullable byte[] data) { + this(uuid, /* licenseServerUrl= */ null, mimeType, data); + } + + /** + * @param uuid The {@link UUID} of the DRM scheme, or {@link C#UUID_NIL} if the data is + * universal (i.e. applies to all schemes). + * @param licenseServerUrl See {@link #licenseServerUrl}. + * @param mimeType See {@link #mimeType}. + * @param data See {@link #data}. + */ + public SchemeData( + UUID uuid, @Nullable String licenseServerUrl, String mimeType, @Nullable byte[] data) { + this.uuid = Assertions.checkNotNull(uuid); + this.licenseServerUrl = licenseServerUrl; + this.mimeType = Assertions.checkNotNull(mimeType); + this.data = data; + } + + /* package */ SchemeData(Parcel in) { + uuid = new UUID(in.readLong(), in.readLong()); + licenseServerUrl = in.readString(); + mimeType = Util.castNonNull(in.readString()); + data = in.createByteArray(); + } + + /** + * Returns whether this initialization data applies to the specified scheme. + * + * @param schemeUuid The scheme {@link UUID}. + * @return Whether this initialization data applies to the specified scheme. + */ + public boolean matches(UUID schemeUuid) { + return C.UUID_NIL.equals(uuid) || schemeUuid.equals(uuid); + } + + /** + * Returns whether this {@link SchemeData} can be used to replace {@code other}. + * + * @param other A {@link SchemeData}. + * @return Whether this {@link SchemeData} can be used to replace {@code other}. + */ + public boolean canReplace(SchemeData other) { + return hasData() && !other.hasData() && matches(other.uuid); + } + + /** + * Returns whether {@link #data} is non-null. + */ + public boolean hasData() { + return data != null; + } + + /** + * Returns a copy of this instance with the specified data. + * + * @param data The data to include in the copy. + * @return The new instance. + */ + public SchemeData copyWithData(@Nullable byte[] data) { + return new SchemeData(uuid, licenseServerUrl, mimeType, data); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (!(obj instanceof SchemeData)) { + return false; + } + if (obj == this) { + return true; + } + SchemeData other = (SchemeData) obj; + return Util.areEqual(licenseServerUrl, other.licenseServerUrl) + && Util.areEqual(mimeType, other.mimeType) + && Util.areEqual(uuid, other.uuid) + && Arrays.equals(data, other.data); + } + + @Override + public int hashCode() { + if (hashCode == 0) { + int result = uuid.hashCode(); + result = 31 * result + (licenseServerUrl == null ? 0 : licenseServerUrl.hashCode()); + result = 31 * result + mimeType.hashCode(); + result = 31 * result + Arrays.hashCode(data); + hashCode = result; + } + return hashCode; + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeLong(uuid.getMostSignificantBits()); + dest.writeLong(uuid.getLeastSignificantBits()); + dest.writeString(licenseServerUrl); + dest.writeString(mimeType); + dest.writeByteArray(data); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public SchemeData createFromParcel(Parcel in) { + return new SchemeData(in); + } + + @Override + public SchemeData[] newArray(int size) { + return new SchemeData[size]; + } + + }; + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DrmSession.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DrmSession.java new file mode 100644 index 0000000000..7a9af2684f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DrmSession.java @@ -0,0 +1,144 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.media.MediaDrm; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Map; + +/** + * A DRM session. + */ +public interface DrmSession { + + /** + * Invokes {@code newSession's} {@link #acquire()} and {@code previousSession's} {@link + * #release()} in that order. Null arguments are ignored. Does nothing if {@code previousSession} + * and {@code newSession} are the same session. + */ + static void replaceSession( + @Nullable DrmSession previousSession, @Nullable DrmSession newSession) { + if (previousSession == newSession) { + // Do nothing. + return; + } + if (newSession != null) { + newSession.acquire(); + } + if (previousSession != null) { + previousSession.release(); + } + } + + /** Wraps the throwable which is the cause of the error state. */ + class DrmSessionException extends IOException { + + public DrmSessionException(Throwable cause) { + super(cause); + } + + } + + /** + * The state of the DRM session. One of {@link #STATE_RELEASED}, {@link #STATE_ERROR}, {@link + * #STATE_OPENING}, {@link #STATE_OPENED} or {@link #STATE_OPENED_WITH_KEYS}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({STATE_RELEASED, STATE_ERROR, STATE_OPENING, STATE_OPENED, STATE_OPENED_WITH_KEYS}) + @interface State {} + /** + * The session has been released. + */ + int STATE_RELEASED = 0; + /** + * The session has encountered an error. {@link #getError()} can be used to retrieve the cause. + */ + int STATE_ERROR = 1; + /** + * The session is being opened. + */ + int STATE_OPENING = 2; + /** The session is open, but does not have keys required for decryption. */ + int STATE_OPENED = 3; + /** The session is open and has keys required for decryption. */ + int STATE_OPENED_WITH_KEYS = 4; + + /** + * Returns the current state of the session, which is one of {@link #STATE_ERROR}, + * {@link #STATE_RELEASED}, {@link #STATE_OPENING}, {@link #STATE_OPENED} and + * {@link #STATE_OPENED_WITH_KEYS}. + */ + @State int getState(); + + /** Returns whether this session allows playback of clear samples prior to keys being loaded. */ + default boolean playClearSamplesWithoutKeys() { + return false; + } + + /** + * Returns the cause of the error state, or null if {@link #getState()} is not {@link + * #STATE_ERROR}. + */ + @Nullable + DrmSessionException getError(); + + /** + * Returns a {@link ExoMediaCrypto} for the open session, or null if called before the session has + * been opened or after it's been released. + */ + @Nullable + T getMediaCrypto(); + + /** + * Returns a map describing the key status for the session, or null if called before the session + * has been opened or after it's been released. + * + *

Since DRM license policies vary by vendor, the specific status field names are determined by + * each DRM vendor. Refer to your DRM provider documentation for definitions of the field names + * for a particular DRM engine plugin. + * + * @return A map describing the key status for the session, or null if called before the session + * has been opened or after it's been released. + * @see MediaDrm#queryKeyStatus(byte[]) + */ + @Nullable + Map queryKeyStatus(); + + /** + * Returns the key set id of the offline license loaded into this session, or null if there isn't + * one. + */ + @Nullable + byte[] getOfflineLicenseKeySetId(); + + /** + * Increments the reference count. When the caller no longer needs to use the instance, it must + * call {@link #release()} to decrement the reference count. + */ + void acquire(); + + /** + * Decrements the reference count. If the reference count drops to 0 underlying resources are + * released, and the instance cannot be re-used. + */ + void release(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DrmSessionManager.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DrmSessionManager.java new file mode 100644 index 0000000000..bf98a0a658 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DrmSessionManager.java @@ -0,0 +1,121 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.os.Looper; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData.SchemeData; + +/** + * Manages a DRM session. + */ +public interface DrmSessionManager { + + /** Returns {@link #DUMMY}. */ + @SuppressWarnings("unchecked") + static DrmSessionManager getDummyDrmSessionManager() { + return (DrmSessionManager) DUMMY; + } + + /** {@link DrmSessionManager} that supports no DRM schemes. */ + DrmSessionManager DUMMY = + new DrmSessionManager() { + + @Override + public boolean canAcquireSession(DrmInitData drmInitData) { + return false; + } + + @Override + public DrmSession acquireSession( + Looper playbackLooper, DrmInitData drmInitData) { + return new ErrorStateDrmSession<>( + new DrmSession.DrmSessionException( + new UnsupportedDrmException(UnsupportedDrmException.REASON_UNSUPPORTED_SCHEME))); + } + + @Override + @Nullable + public Class getExoMediaCryptoType(DrmInitData drmInitData) { + return null; + } + }; + + /** + * Acquires any required resources. + * + *

{@link #release()} must be called to ensure the acquired resources are released. After + * releasing, an instance may be re-prepared. + */ + default void prepare() { + // Do nothing. + } + + /** Releases any acquired resources. */ + default void release() { + // Do nothing. + } + + /** + * Returns whether the manager is capable of acquiring a session for the given + * {@link DrmInitData}. + * + * @param drmInitData DRM initialization data. + * @return Whether the manager is capable of acquiring a session for the given + * {@link DrmInitData}. + */ + boolean canAcquireSession(DrmInitData drmInitData); + + /** + * Returns a {@link DrmSession} that does not execute key requests, with an incremented reference + * count. When the caller no longer needs to use the instance, it must call {@link + * DrmSession#release()} to decrement the reference count. + * + *

Placeholder {@link DrmSession DrmSessions} may be used to configure secure decoders for + * playback of clear content periods. This can reduce the cost of transitioning between clear and + * encrypted content periods. + * + * @param playbackLooper The looper associated with the media playback thread. + * @param trackType The type of the track to acquire a placeholder session for. Must be one of the + * {@link C}{@code .TRACK_TYPE_*} constants. + * @return The placeholder DRM session, or null if this DRM session manager does not support + * placeholder sessions. + */ + @Nullable + default DrmSession acquirePlaceholderSession(Looper playbackLooper, int trackType) { + return null; + } + + /** + * Returns a {@link DrmSession} for the specified {@link DrmInitData}, with an incremented + * reference count. When the caller no longer needs to use the instance, it must call {@link + * DrmSession#release()} to decrement the reference count. + * + * @param playbackLooper The looper associated with the media playback thread. + * @param drmInitData DRM initialization data. All contained {@link SchemeData}s must contain + * non-null {@link SchemeData#data}. + * @return The DRM session. + */ + DrmSession acquireSession(Looper playbackLooper, DrmInitData drmInitData); + + /** + * Returns the {@link ExoMediaCrypto} type returned by sessions acquired using the given {@link + * DrmInitData}, or null if a session cannot be acquired with the given {@link DrmInitData}. + */ + @Nullable + Class getExoMediaCryptoType(DrmInitData drmInitData); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DummyExoMediaDrm.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DummyExoMediaDrm.java new file mode 100644 index 0000000000..b6a66ceac0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/DummyExoMediaDrm.java @@ -0,0 +1,146 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.media.MediaDrmException; +import android.os.PersistableBundle; +import androidx.annotation.Nullable; +import androidx.annotation.RequiresApi; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +/** An {@link ExoMediaDrm} that does not support any protection schemes. */ +@RequiresApi(18) +public final class DummyExoMediaDrm implements ExoMediaDrm { + + /** Returns a new instance. */ + @SuppressWarnings("unchecked") + public static DummyExoMediaDrm getInstance() { + return (DummyExoMediaDrm) new DummyExoMediaDrm<>(); + } + + @Override + public void setOnEventListener(OnEventListener listener) { + // Do nothing. + } + + @Override + public void setOnKeyStatusChangeListener(OnKeyStatusChangeListener listener) { + // Do nothing. + } + + @Override + public byte[] openSession() throws MediaDrmException { + throw new MediaDrmException("Attempting to open a session using a dummy ExoMediaDrm."); + } + + @Override + public void closeSession(byte[] sessionId) { + // Do nothing. + } + + @Override + public KeyRequest getKeyRequest( + byte[] scope, + @Nullable List schemeDatas, + int keyType, + @Nullable HashMap optionalParameters) { + // Should not be invoked. No session should exist. + throw new IllegalStateException(); + } + + @Nullable + @Override + public byte[] provideKeyResponse(byte[] scope, byte[] response) { + // Should not be invoked. No session should exist. + throw new IllegalStateException(); + } + + @Override + public ProvisionRequest getProvisionRequest() { + // Should not be invoked. No provision should be required. + throw new IllegalStateException(); + } + + @Override + public void provideProvisionResponse(byte[] response) { + // Should not be invoked. No provision should be required. + throw new IllegalStateException(); + } + + @Override + public Map queryKeyStatus(byte[] sessionId) { + // Should not be invoked. No session should exist. + throw new IllegalStateException(); + } + + @Override + public void acquire() { + // Do nothing. + } + + @Override + public void release() { + // Do nothing. + } + + @Override + public void restoreKeys(byte[] sessionId, byte[] keySetId) { + // Should not be invoked. No session should exist. + throw new IllegalStateException(); + } + + @Override + @Nullable + public PersistableBundle getMetrics() { + return null; + } + + @Override + public String getPropertyString(String propertyName) { + return ""; + } + + @Override + public byte[] getPropertyByteArray(String propertyName) { + return Util.EMPTY_BYTE_ARRAY; + } + + @Override + public void setPropertyString(String propertyName, String value) { + // Do nothing. + } + + @Override + public void setPropertyByteArray(String propertyName, byte[] value) { + // Do nothing. + } + + @Override + public T createMediaCrypto(byte[] sessionId) { + // Should not be invoked. No session should exist. + throw new IllegalStateException(); + } + + @Override + @Nullable + public Class getExoMediaCryptoType() { + // No ExoMediaCrypto type is supported. + return null; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ErrorStateDrmSession.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ErrorStateDrmSession.java new file mode 100644 index 0000000000..97d0ecaaa4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ErrorStateDrmSession.java @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.Map; + +/** A {@link DrmSession} that's in a terminal error state. */ +public final class ErrorStateDrmSession implements DrmSession { + + private final DrmSessionException error; + + public ErrorStateDrmSession(DrmSessionException error) { + this.error = Assertions.checkNotNull(error); + } + + @Override + public int getState() { + return STATE_ERROR; + } + + @Override + public boolean playClearSamplesWithoutKeys() { + return false; + } + + @Override + @Nullable + public DrmSessionException getError() { + return error; + } + + @Override + @Nullable + public T getMediaCrypto() { + return null; + } + + @Override + @Nullable + public Map queryKeyStatus() { + return null; + } + + @Override + @Nullable + public byte[] getOfflineLicenseKeySetId() { + return null; + } + + @Override + public void acquire() { + // Do nothing. + } + + @Override + public void release() { + // Do nothing. + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ExoMediaCrypto.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ExoMediaCrypto.java new file mode 100644 index 0000000000..a12b212799 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ExoMediaCrypto.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +/** An opaque {@link android.media.MediaCrypto} equivalent. */ +public interface ExoMediaCrypto {} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ExoMediaDrm.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ExoMediaDrm.java new file mode 100644 index 0000000000..1e851a7c0b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/ExoMediaDrm.java @@ -0,0 +1,342 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.media.DeniedByServerException; +import android.media.MediaCryptoException; +import android.media.MediaDrm; +import android.media.MediaDrmException; +import android.media.NotProvisionedException; +import android.os.Handler; +import android.os.PersistableBundle; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData.SchemeData; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.UUID; + +/** + * Used to obtain keys for decrypting protected media streams. See {@link android.media.MediaDrm}. + * + *

Reference counting

+ * + *

Access to an instance is managed by reference counting, where {@link #acquire()} increments + * the reference count and {@link #release()} decrements it. When the reference count drops to 0 + * underlying resources are released, and the instance cannot be re-used. + * + *

Each new instance has an initial reference count of 1. Hence application code that creates a + * new instance does not normally need to call {@link #acquire()}, and must call {@link #release()} + * when the instance is no longer required. + */ +public interface ExoMediaDrm { + + /** {@link ExoMediaDrm} instances provider. */ + interface Provider { + + /** + * Returns an {@link ExoMediaDrm} instance with an incremented reference count. When the caller + * no longer needs to use the instance, it must call {@link ExoMediaDrm#release()} to decrement + * the reference count. + */ + ExoMediaDrm acquireExoMediaDrm(UUID uuid); + } + + /** + * Provides an {@link ExoMediaDrm} instance owned by the app. + * + *

Note that when using this provider the app will have instantiated the {@link ExoMediaDrm} + * instance, and remains responsible for calling {@link ExoMediaDrm#release()} on the instance + * when it's no longer being used. + */ + final class AppManagedProvider implements Provider { + + private final ExoMediaDrm exoMediaDrm; + + /** Creates an instance that provides the given {@link ExoMediaDrm}. */ + public AppManagedProvider(ExoMediaDrm exoMediaDrm) { + this.exoMediaDrm = exoMediaDrm; + } + + @Override + public ExoMediaDrm acquireExoMediaDrm(UUID uuid) { + exoMediaDrm.acquire(); + return exoMediaDrm; + } + } + + /** @see MediaDrm#EVENT_KEY_REQUIRED */ + @SuppressWarnings("InlinedApi") + int EVENT_KEY_REQUIRED = MediaDrm.EVENT_KEY_REQUIRED; + /** + * @see MediaDrm#EVENT_KEY_EXPIRED + */ + @SuppressWarnings("InlinedApi") + int EVENT_KEY_EXPIRED = MediaDrm.EVENT_KEY_EXPIRED; + /** + * @see MediaDrm#EVENT_PROVISION_REQUIRED + */ + @SuppressWarnings("InlinedApi") + int EVENT_PROVISION_REQUIRED = MediaDrm.EVENT_PROVISION_REQUIRED; + + /** + * @see MediaDrm#KEY_TYPE_STREAMING + */ + @SuppressWarnings("InlinedApi") + int KEY_TYPE_STREAMING = MediaDrm.KEY_TYPE_STREAMING; + /** + * @see MediaDrm#KEY_TYPE_OFFLINE + */ + @SuppressWarnings("InlinedApi") + int KEY_TYPE_OFFLINE = MediaDrm.KEY_TYPE_OFFLINE; + /** + * @see MediaDrm#KEY_TYPE_RELEASE + */ + @SuppressWarnings("InlinedApi") + int KEY_TYPE_RELEASE = MediaDrm.KEY_TYPE_RELEASE; + + /** + * @see android.media.MediaDrm.OnEventListener + */ + interface OnEventListener { + /** + * Called when an event occurs that requires the app to be notified + * + * @param mediaDrm The {@link ExoMediaDrm} object on which the event occurred. + * @param sessionId The DRM session ID on which the event occurred. + * @param event Indicates the event type. + * @param extra A secondary error code. + * @param data Optional byte array of data that may be associated with the event. + */ + void onEvent( + ExoMediaDrm mediaDrm, + @Nullable byte[] sessionId, + int event, + int extra, + @Nullable byte[] data); + } + + /** + * @see android.media.MediaDrm.OnKeyStatusChangeListener + */ + interface OnKeyStatusChangeListener { + /** + * Called when the keys in a session change status, such as when the license is renewed or + * expires. + * + * @param mediaDrm The {@link ExoMediaDrm} object on which the event occurred. + * @param sessionId The DRM session ID on which the event occurred. + * @param exoKeyInformation A list of {@link KeyStatus} that contains key ID and status. + * @param hasNewUsableKey Whether a new key became usable. + */ + void onKeyStatusChange( + ExoMediaDrm mediaDrm, + byte[] sessionId, + List exoKeyInformation, + boolean hasNewUsableKey); + } + + /** @see android.media.MediaDrm.KeyStatus */ + final class KeyStatus { + + private final int statusCode; + private final byte[] keyId; + + public KeyStatus(int statusCode, byte[] keyId) { + this.statusCode = statusCode; + this.keyId = keyId; + } + + public int getStatusCode() { + return statusCode; + } + + public byte[] getKeyId() { + return keyId; + } + + } + + /** @see android.media.MediaDrm.KeyRequest */ + final class KeyRequest { + + private final byte[] data; + private final String licenseServerUrl; + + public KeyRequest(byte[] data, String licenseServerUrl) { + this.data = data; + this.licenseServerUrl = licenseServerUrl; + } + + public byte[] getData() { + return data; + } + + public String getLicenseServerUrl() { + return licenseServerUrl; + } + + } + + /** @see android.media.MediaDrm.ProvisionRequest */ + final class ProvisionRequest { + + private final byte[] data; + private final String defaultUrl; + + public ProvisionRequest(byte[] data, String defaultUrl) { + this.data = data; + this.defaultUrl = defaultUrl; + } + + public byte[] getData() { + return data; + } + + public String getDefaultUrl() { + return defaultUrl; + } + + } + + /** + * @see MediaDrm#setOnEventListener(MediaDrm.OnEventListener) + */ + void setOnEventListener(OnEventListener listener); + + /** + * @see MediaDrm#setOnKeyStatusChangeListener(MediaDrm.OnKeyStatusChangeListener, Handler) + */ + void setOnKeyStatusChangeListener(OnKeyStatusChangeListener listener); + + /** + * @see MediaDrm#openSession() + */ + byte[] openSession() throws MediaDrmException; + + /** + * @see MediaDrm#closeSession(byte[]) + */ + void closeSession(byte[] sessionId); + + /** + * Generates a key request. + * + * @param scope If {@code keyType} is {@link #KEY_TYPE_STREAMING} or {@link #KEY_TYPE_OFFLINE}, + * the session id that the keys will be provided to. If {@code keyType} is {@link + * #KEY_TYPE_RELEASE}, the keySetId of the keys to release. + * @param schemeDatas If key type is {@link #KEY_TYPE_STREAMING} or {@link #KEY_TYPE_OFFLINE}, a + * list of {@link SchemeData} instances extracted from the media. Null otherwise. + * @param keyType The type of the request. Either {@link #KEY_TYPE_STREAMING} to acquire keys for + * streaming, {@link #KEY_TYPE_OFFLINE} to acquire keys for offline usage, or {@link + * #KEY_TYPE_RELEASE} to release acquired keys. Releasing keys invalidates them for all + * sessions. + * @param optionalParameters Are included in the key request message to allow a client application + * to provide additional message parameters to the server. This may be {@code null} if no + * additional parameters are to be sent. + * @return The generated key request. + * @see MediaDrm#getKeyRequest(byte[], byte[], String, int, HashMap) + */ + KeyRequest getKeyRequest( + byte[] scope, + @Nullable List schemeDatas, + int keyType, + @Nullable HashMap optionalParameters) + throws NotProvisionedException; + + /** @see MediaDrm#provideKeyResponse(byte[], byte[]) */ + @Nullable + byte[] provideKeyResponse(byte[] scope, byte[] response) + throws NotProvisionedException, DeniedByServerException; + + /** + * @see MediaDrm#getProvisionRequest() + */ + ProvisionRequest getProvisionRequest(); + + /** + * @see MediaDrm#provideProvisionResponse(byte[]) + */ + void provideProvisionResponse(byte[] response) throws DeniedByServerException; + + /** + * @see MediaDrm#queryKeyStatus(byte[]) + */ + Map queryKeyStatus(byte[] sessionId); + + /** + * Increments the reference count. When the caller no longer needs to use the instance, it must + * call {@link #release()} to decrement the reference count. + * + *

A new instance will have an initial reference count of 1, and therefore it is not normally + * necessary for application code to call this method. + */ + void acquire(); + + /** + * Decrements the reference count. If the reference count drops to 0 underlying resources are + * released, and the instance cannot be re-used. + */ + void release(); + + /** + * @see MediaDrm#restoreKeys(byte[], byte[]) + */ + void restoreKeys(byte[] sessionId, byte[] keySetId); + + /** + * Returns drm metrics. May be null if unavailable. + * + * @see MediaDrm#getMetrics() + */ + @Nullable + PersistableBundle getMetrics(); + + /** + * @see MediaDrm#getPropertyString(String) + */ + String getPropertyString(String propertyName); + + /** + * @see MediaDrm#getPropertyByteArray(String) + */ + byte[] getPropertyByteArray(String propertyName); + + /** + * @see MediaDrm#setPropertyString(String, String) + */ + void setPropertyString(String propertyName, String value); + + /** + * @see MediaDrm#setPropertyByteArray(String, byte[]) + */ + void setPropertyByteArray(String propertyName, byte[] value); + + /** + * @see android.media.MediaCrypto#MediaCrypto(UUID, byte[]) + * @param sessionId The DRM session ID. + * @return An object extends {@link ExoMediaCrypto}, using opaque crypto scheme specific data. + * @throws MediaCryptoException If the instance can't be created. + */ + T createMediaCrypto(byte[] sessionId) throws MediaCryptoException; + + /** + * Returns the {@link ExoMediaCrypto} type created by {@link #createMediaCrypto(byte[])}, or null + * if this instance cannot create any {@link ExoMediaCrypto} instances. + */ + @Nullable + Class getExoMediaCryptoType(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/FrameworkMediaCrypto.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/FrameworkMediaCrypto.java new file mode 100644 index 0000000000..bb3a9b272b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/FrameworkMediaCrypto.java @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.media.MediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.UUID; + +/** + * An {@link ExoMediaCrypto} implementation that contains the necessary information to build or + * update a framework {@link MediaCrypto}. + */ +public final class FrameworkMediaCrypto implements ExoMediaCrypto { + + /** + * Whether the device needs keys to have been loaded into the {@link DrmSession} before codec + * configuration. + */ + public static final boolean WORKAROUND_DEVICE_NEEDS_KEYS_TO_CONFIGURE_CODEC = + "Amazon".equals(Util.MANUFACTURER) + && ("AFTM".equals(Util.MODEL) // Fire TV Stick Gen 1 + || "AFTB".equals(Util.MODEL)); // Fire TV Gen 1 + + /** The DRM scheme UUID. */ + public final UUID uuid; + /** The DRM session id. */ + public final byte[] sessionId; + /** + * Whether to allow use of insecure decoder components even if the underlying platform says + * otherwise. + */ + public final boolean forceAllowInsecureDecoderComponents; + + /** + * @param uuid The DRM scheme UUID. + * @param sessionId The DRM session id. + * @param forceAllowInsecureDecoderComponents Whether to allow use of insecure decoder components + * even if the underlying platform says otherwise. + */ + public FrameworkMediaCrypto( + UUID uuid, byte[] sessionId, boolean forceAllowInsecureDecoderComponents) { + this.uuid = uuid; + this.sessionId = sessionId; + this.forceAllowInsecureDecoderComponents = forceAllowInsecureDecoderComponents; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/FrameworkMediaDrm.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/FrameworkMediaDrm.java new file mode 100644 index 0000000000..10ca857448 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/FrameworkMediaDrm.java @@ -0,0 +1,440 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.annotation.SuppressLint; +import android.annotation.TargetApi; +import android.media.DeniedByServerException; +import android.media.MediaCryptoException; +import android.media.MediaDrm; +import android.media.MediaDrmException; +import android.media.NotProvisionedException; +import android.media.UnsupportedSchemeException; +import android.os.PersistableBundle; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import androidx.annotation.RequiresApi; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData.SchemeData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4.PsshAtomUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.charset.Charset; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.UUID; + +/** An {@link ExoMediaDrm} implementation that wraps the framework {@link MediaDrm}. */ +@TargetApi(23) +@RequiresApi(18) +public final class FrameworkMediaDrm implements ExoMediaDrm { + + private static final String TAG = "FrameworkMediaDrm"; + + /** + * {@link ExoMediaDrm.Provider} that returns a new {@link FrameworkMediaDrm} for the requested + * UUID. Returns a {@link DummyExoMediaDrm} if the protection scheme identified by the given UUID + * is not supported by the device. + */ + public static final Provider DEFAULT_PROVIDER = + uuid -> { + try { + return newInstance(uuid); + } catch (UnsupportedDrmException e) { + Log.e(TAG, "Failed to instantiate a FrameworkMediaDrm for uuid: " + uuid + "."); + return new DummyExoMediaDrm<>(); + } + }; + + private static final String CENC_SCHEME_MIME_TYPE = "cenc"; + private static final String MOCK_LA_URL_VALUE = "https://x"; + private static final String MOCK_LA_URL = "" + MOCK_LA_URL_VALUE + ""; + private static final int UTF_16_BYTES_PER_CHARACTER = 2; + + private final UUID uuid; + private final MediaDrm mediaDrm; + private int referenceCount; + + /** + * Creates an instance with an initial reference count of 1. {@link #release()} must be called on + * the instance when it's no longer required. + * + * @param uuid The scheme uuid. + * @return The created instance. + * @throws UnsupportedDrmException If the DRM scheme is unsupported or cannot be instantiated. + */ + public static FrameworkMediaDrm newInstance(UUID uuid) throws UnsupportedDrmException { + try { + return new FrameworkMediaDrm(uuid); + } catch (UnsupportedSchemeException e) { + throw new UnsupportedDrmException(UnsupportedDrmException.REASON_UNSUPPORTED_SCHEME, e); + } catch (Exception e) { + throw new UnsupportedDrmException(UnsupportedDrmException.REASON_INSTANTIATION_ERROR, e); + } + } + + private FrameworkMediaDrm(UUID uuid) throws UnsupportedSchemeException { + Assertions.checkNotNull(uuid); + Assertions.checkArgument(!C.COMMON_PSSH_UUID.equals(uuid), "Use C.CLEARKEY_UUID instead"); + this.uuid = uuid; + this.mediaDrm = new MediaDrm(adjustUuid(uuid)); + // Creators of an instance automatically acquire ownership of the created instance. + referenceCount = 1; + if (C.WIDEVINE_UUID.equals(uuid) && needsForceWidevineL3Workaround()) { + forceWidevineL3(mediaDrm); + } + } + + @Override + public void setOnEventListener( + final ExoMediaDrm.OnEventListener listener) { + mediaDrm.setOnEventListener( + listener == null + ? null + : (mediaDrm, sessionId, event, extra, data) -> + listener.onEvent(FrameworkMediaDrm.this, sessionId, event, extra, data)); + } + + @Override + public void setOnKeyStatusChangeListener( + final ExoMediaDrm.OnKeyStatusChangeListener listener) { + if (Util.SDK_INT < 23) { + throw new UnsupportedOperationException(); + } + + mediaDrm.setOnKeyStatusChangeListener( + listener == null + ? null + : (mediaDrm, sessionId, keyInfo, hasNewUsableKey) -> { + List exoKeyInfo = new ArrayList<>(); + for (MediaDrm.KeyStatus keyStatus : keyInfo) { + exoKeyInfo.add(new KeyStatus(keyStatus.getStatusCode(), keyStatus.getKeyId())); + } + listener.onKeyStatusChange( + FrameworkMediaDrm.this, sessionId, exoKeyInfo, hasNewUsableKey); + }, + null); + } + + @Override + public byte[] openSession() throws MediaDrmException { + return mediaDrm.openSession(); + } + + @Override + public void closeSession(byte[] sessionId) { + mediaDrm.closeSession(sessionId); + } + + @Override + public KeyRequest getKeyRequest( + byte[] scope, + @Nullable List schemeDatas, + int keyType, + @Nullable HashMap optionalParameters) + throws NotProvisionedException { + SchemeData schemeData = null; + byte[] initData = null; + String mimeType = null; + if (schemeDatas != null) { + schemeData = getSchemeData(uuid, schemeDatas); + initData = adjustRequestInitData(uuid, Assertions.checkNotNull(schemeData.data)); + mimeType = adjustRequestMimeType(uuid, schemeData.mimeType); + } + MediaDrm.KeyRequest request = + mediaDrm.getKeyRequest(scope, initData, mimeType, keyType, optionalParameters); + + byte[] requestData = adjustRequestData(uuid, request.getData()); + + String licenseServerUrl = request.getDefaultUrl(); + if (MOCK_LA_URL_VALUE.equals(licenseServerUrl)) { + licenseServerUrl = ""; + } + if (TextUtils.isEmpty(licenseServerUrl) + && schemeData != null + && !TextUtils.isEmpty(schemeData.licenseServerUrl)) { + licenseServerUrl = schemeData.licenseServerUrl; + } + + return new KeyRequest(requestData, licenseServerUrl); + } + + @Nullable + @Override + public byte[] provideKeyResponse(byte[] scope, byte[] response) + throws NotProvisionedException, DeniedByServerException { + if (C.CLEARKEY_UUID.equals(uuid)) { + response = ClearKeyUtil.adjustResponseData(response); + } + + return mediaDrm.provideKeyResponse(scope, response); + } + + @Override + public ProvisionRequest getProvisionRequest() { + final MediaDrm.ProvisionRequest request = mediaDrm.getProvisionRequest(); + return new ProvisionRequest(request.getData(), request.getDefaultUrl()); + } + + @Override + public void provideProvisionResponse(byte[] response) throws DeniedByServerException { + mediaDrm.provideProvisionResponse(response); + } + + @Override + public Map queryKeyStatus(byte[] sessionId) { + return mediaDrm.queryKeyStatus(sessionId); + } + + @Override + public synchronized void acquire() { + Assertions.checkState(referenceCount > 0); + referenceCount++; + } + + @Override + public synchronized void release() { + if (--referenceCount == 0) { + mediaDrm.release(); + } + } + + @Override + public void restoreKeys(byte[] sessionId, byte[] keySetId) { + mediaDrm.restoreKeys(sessionId, keySetId); + } + + @Override + @Nullable + @TargetApi(28) + public PersistableBundle getMetrics() { + if (Util.SDK_INT < 28) { + return null; + } + return mediaDrm.getMetrics(); + } + + @Override + public String getPropertyString(String propertyName) { + return mediaDrm.getPropertyString(propertyName); + } + + @Override + public byte[] getPropertyByteArray(String propertyName) { + return mediaDrm.getPropertyByteArray(propertyName); + } + + @Override + public void setPropertyString(String propertyName, String value) { + mediaDrm.setPropertyString(propertyName, value); + } + + @Override + public void setPropertyByteArray(String propertyName, byte[] value) { + mediaDrm.setPropertyByteArray(propertyName, value); + } + + @Override + public FrameworkMediaCrypto createMediaCrypto(byte[] initData) throws MediaCryptoException { + // Work around a bug prior to Lollipop where L1 Widevine forced into L3 mode would still + // indicate that it required secure video decoders [Internal ref: b/11428937]. + boolean forceAllowInsecureDecoderComponents = Util.SDK_INT < 21 + && C.WIDEVINE_UUID.equals(uuid) && "L3".equals(getPropertyString("securityLevel")); + return new FrameworkMediaCrypto( + adjustUuid(uuid), initData, forceAllowInsecureDecoderComponents); + } + + @Override + public Class getExoMediaCryptoType() { + return FrameworkMediaCrypto.class; + } + + private static SchemeData getSchemeData(UUID uuid, List schemeDatas) { + if (!C.WIDEVINE_UUID.equals(uuid)) { + // For non-Widevine CDMs always use the first scheme data. + return schemeDatas.get(0); + } + + if (Util.SDK_INT >= 28 && schemeDatas.size() > 1) { + // For API level 28 and above, concatenate multiple PSSH scheme datas if possible. + SchemeData firstSchemeData = schemeDatas.get(0); + int concatenatedDataLength = 0; + boolean canConcatenateData = true; + for (int i = 0; i < schemeDatas.size(); i++) { + SchemeData schemeData = schemeDatas.get(i); + byte[] schemeDataData = Util.castNonNull(schemeData.data); + if (Util.areEqual(schemeData.mimeType, firstSchemeData.mimeType) + && Util.areEqual(schemeData.licenseServerUrl, firstSchemeData.licenseServerUrl) + && PsshAtomUtil.isPsshAtom(schemeDataData)) { + concatenatedDataLength += schemeDataData.length; + } else { + canConcatenateData = false; + break; + } + } + if (canConcatenateData) { + byte[] concatenatedData = new byte[concatenatedDataLength]; + int concatenatedDataPosition = 0; + for (int i = 0; i < schemeDatas.size(); i++) { + SchemeData schemeData = schemeDatas.get(i); + byte[] schemeDataData = Util.castNonNull(schemeData.data); + int schemeDataLength = schemeDataData.length; + System.arraycopy( + schemeDataData, 0, concatenatedData, concatenatedDataPosition, schemeDataLength); + concatenatedDataPosition += schemeDataLength; + } + return firstSchemeData.copyWithData(concatenatedData); + } + } + + // For API levels 23 - 27, prefer the first V1 PSSH box. For API levels 22 and earlier, prefer + // the first V0 box. + for (int i = 0; i < schemeDatas.size(); i++) { + SchemeData schemeData = schemeDatas.get(i); + int version = PsshAtomUtil.parseVersion(Util.castNonNull(schemeData.data)); + if (Util.SDK_INT < 23 && version == 0) { + return schemeData; + } else if (Util.SDK_INT >= 23 && version == 1) { + return schemeData; + } + } + + // If all else fails, use the first scheme data. + return schemeDatas.get(0); + } + + private static UUID adjustUuid(UUID uuid) { + // ClearKey had to be accessed using the Common PSSH UUID prior to API level 27. + return Util.SDK_INT < 27 && C.CLEARKEY_UUID.equals(uuid) ? C.COMMON_PSSH_UUID : uuid; + } + + private static byte[] adjustRequestInitData(UUID uuid, byte[] initData) { + // TODO: Add API level check once [Internal ref: b/112142048] is fixed. + if (C.PLAYREADY_UUID.equals(uuid)) { + byte[] schemeSpecificData = PsshAtomUtil.parseSchemeSpecificData(initData, uuid); + if (schemeSpecificData == null) { + // The init data is not contained in a pssh box. + schemeSpecificData = initData; + } + initData = + PsshAtomUtil.buildPsshAtom( + C.PLAYREADY_UUID, addLaUrlAttributeIfMissing(schemeSpecificData)); + } + + // Prior to API level 21, the Widevine CDM required scheme specific data to be extracted from + // the PSSH atom. We also extract the data on API levels 21 and 22 because these API levels + // don't handle V1 PSSH atoms, but do handle scheme specific data regardless of whether it's + // extracted from a V0 or a V1 PSSH atom. Hence extracting the data allows us to support content + // that only provides V1 PSSH atoms. API levels 23 and above understand V0 and V1 PSSH atoms, + // and so we do not extract the data. + // Some Amazon devices also require data to be extracted from the PSSH atom for PlayReady. + if ((Util.SDK_INT < 23 && C.WIDEVINE_UUID.equals(uuid)) + || (C.PLAYREADY_UUID.equals(uuid) + && "Amazon".equals(Util.MANUFACTURER) + && ("AFTB".equals(Util.MODEL) // Fire TV Gen 1 + || "AFTS".equals(Util.MODEL) // Fire TV Gen 2 + || "AFTM".equals(Util.MODEL) // Fire TV Stick Gen 1 + || "AFTT".equals(Util.MODEL)))) { // Fire TV Stick Gen 2 + byte[] psshData = PsshAtomUtil.parseSchemeSpecificData(initData, uuid); + if (psshData != null) { + // Extraction succeeded, so return the extracted data. + return psshData; + } + } + return initData; + } + + private static String adjustRequestMimeType(UUID uuid, String mimeType) { + // Prior to API level 26 the ClearKey CDM only accepted "cenc" as the scheme for MP4. + if (Util.SDK_INT < 26 + && C.CLEARKEY_UUID.equals(uuid) + && (MimeTypes.VIDEO_MP4.equals(mimeType) || MimeTypes.AUDIO_MP4.equals(mimeType))) { + return CENC_SCHEME_MIME_TYPE; + } + return mimeType; + } + + private static byte[] adjustRequestData(UUID uuid, byte[] requestData) { + if (C.CLEARKEY_UUID.equals(uuid)) { + return ClearKeyUtil.adjustRequestData(requestData); + } + return requestData; + } + + @SuppressLint("WrongConstant") // Suppress spurious lint error [Internal ref: b/32137960] + private static void forceWidevineL3(MediaDrm mediaDrm) { + mediaDrm.setPropertyString("securityLevel", "L3"); + } + + /** + * Returns whether the device codec is known to fail if security level L1 is used. + * + *

See GitHub issue #4413. + */ + private static boolean needsForceWidevineL3Workaround() { + return "ASUS_Z00AD".equals(Util.MODEL); + } + + /** + * If the LA_URL tag is missing, injects a mock LA_URL value to avoid causing the CDM to throw + * when creating the key request. The LA_URL attribute is optional but some Android PlayReady + * implementations are known to require it. Does nothing it the provided {@code data} already + * contains an LA_URL value. + */ + private static byte[] addLaUrlAttributeIfMissing(byte[] data) { + ParsableByteArray byteArray = new ParsableByteArray(data); + // See https://docs.microsoft.com/en-us/playready/specifications/specifications for more + // information about the init data format. + int length = byteArray.readLittleEndianInt(); + int objectRecordCount = byteArray.readLittleEndianShort(); + int recordType = byteArray.readLittleEndianShort(); + if (objectRecordCount != 1 || recordType != 1) { + Log.i(TAG, "Unexpected record count or type. Skipping LA_URL workaround."); + return data; + } + int recordLength = byteArray.readLittleEndianShort(); + String xml = byteArray.readString(recordLength, Charset.forName(C.UTF16LE_NAME)); + if (xml.contains("")) { + // LA_URL already present. Do nothing. + return data; + } + // This PlayReady object record does not include an LA_URL. We add a mock value for it. + int endOfDataTagIndex = xml.indexOf(""); + if (endOfDataTagIndex == -1) { + Log.w(TAG, "Could not find the tag. Skipping LA_URL workaround."); + } + String xmlWithMockLaUrl = + xml.substring(/* beginIndex= */ 0, /* endIndex= */ endOfDataTagIndex) + + MOCK_LA_URL + + xml.substring(/* beginIndex= */ endOfDataTagIndex); + int extraBytes = MOCK_LA_URL.length() * UTF_16_BYTES_PER_CHARACTER; + ByteBuffer newData = ByteBuffer.allocate(length + extraBytes); + newData.order(ByteOrder.LITTLE_ENDIAN); + newData.putInt(length + extraBytes); + newData.putShort((short) objectRecordCount); + newData.putShort((short) recordType); + newData.putShort((short) (xmlWithMockLaUrl.length() * UTF_16_BYTES_PER_CHARACTER)); + newData.put(xmlWithMockLaUrl.getBytes(Charset.forName(C.UTF16LE_NAME))); + return newData.array(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/HttpMediaDrmCallback.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/HttpMediaDrmCallback.java new file mode 100644 index 0000000000..baa5bf0916 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/HttpMediaDrmCallback.java @@ -0,0 +1,195 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.annotation.TargetApi; +import android.net.Uri; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaDrm.KeyRequest; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaDrm.ProvisionRequest; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSourceInputStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.HttpDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.HttpDataSource.InvalidResponseCodeException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.UUID; + +/** + * A {@link MediaDrmCallback} that makes requests using {@link HttpDataSource} instances. + */ +@TargetApi(18) +public final class HttpMediaDrmCallback implements MediaDrmCallback { + + private static final int MAX_MANUAL_REDIRECTS = 5; + + private final HttpDataSource.Factory dataSourceFactory; + private final String defaultLicenseUrl; + private final boolean forceDefaultLicenseUrl; + private final Map keyRequestProperties; + + /** + * @param defaultLicenseUrl The default license URL. Used for key requests that do not specify + * their own license URL. + * @param dataSourceFactory A factory from which to obtain {@link HttpDataSource} instances. + */ + public HttpMediaDrmCallback(String defaultLicenseUrl, HttpDataSource.Factory dataSourceFactory) { + this(defaultLicenseUrl, false, dataSourceFactory); + } + + /** + * @param defaultLicenseUrl The default license URL. Used for key requests that do not specify + * their own license URL, or for all key requests if {@code forceDefaultLicenseUrl} is + * set to true. + * @param forceDefaultLicenseUrl Whether to use {@code defaultLicenseUrl} for key requests that + * include their own license URL. + * @param dataSourceFactory A factory from which to obtain {@link HttpDataSource} instances. + */ + public HttpMediaDrmCallback(String defaultLicenseUrl, boolean forceDefaultLicenseUrl, + HttpDataSource.Factory dataSourceFactory) { + this.dataSourceFactory = dataSourceFactory; + this.defaultLicenseUrl = defaultLicenseUrl; + this.forceDefaultLicenseUrl = forceDefaultLicenseUrl; + this.keyRequestProperties = new HashMap<>(); + } + + /** + * Sets a header for key requests made by the callback. + * + * @param name The name of the header field. + * @param value The value of the field. + */ + public void setKeyRequestProperty(String name, String value) { + Assertions.checkNotNull(name); + Assertions.checkNotNull(value); + synchronized (keyRequestProperties) { + keyRequestProperties.put(name, value); + } + } + + /** + * Clears a header for key requests made by the callback. + * + * @param name The name of the header field. + */ + public void clearKeyRequestProperty(String name) { + Assertions.checkNotNull(name); + synchronized (keyRequestProperties) { + keyRequestProperties.remove(name); + } + } + + /** + * Clears all headers for key requests made by the callback. + */ + public void clearAllKeyRequestProperties() { + synchronized (keyRequestProperties) { + keyRequestProperties.clear(); + } + } + + @Override + public byte[] executeProvisionRequest(UUID uuid, ProvisionRequest request) throws IOException { + String url = + request.getDefaultUrl() + "&signedRequest=" + Util.fromUtf8Bytes(request.getData()); + return executePost(dataSourceFactory, url, /* httpBody= */ null, /* requestProperties= */ null); + } + + @Override + public byte[] executeKeyRequest(UUID uuid, KeyRequest request) throws Exception { + String url = request.getLicenseServerUrl(); + if (forceDefaultLicenseUrl || TextUtils.isEmpty(url)) { + url = defaultLicenseUrl; + } + Map requestProperties = new HashMap<>(); + // Add standard request properties for supported schemes. + String contentType = C.PLAYREADY_UUID.equals(uuid) ? "text/xml" + : (C.CLEARKEY_UUID.equals(uuid) ? "application/json" : "application/octet-stream"); + requestProperties.put("Content-Type", contentType); + if (C.PLAYREADY_UUID.equals(uuid)) { + requestProperties.put("SOAPAction", + "http://schemas.microsoft.com/DRM/2007/03/protocols/AcquireLicense"); + } + // Add additional request properties. + synchronized (keyRequestProperties) { + requestProperties.putAll(keyRequestProperties); + } + return executePost(dataSourceFactory, url, request.getData(), requestProperties); + } + + private static byte[] executePost( + HttpDataSource.Factory dataSourceFactory, + String url, + @Nullable byte[] httpBody, + @Nullable Map requestProperties) + throws IOException { + HttpDataSource dataSource = dataSourceFactory.createDataSource(); + if (requestProperties != null) { + for (Map.Entry requestProperty : requestProperties.entrySet()) { + dataSource.setRequestProperty(requestProperty.getKey(), requestProperty.getValue()); + } + } + + int manualRedirectCount = 0; + while (true) { + DataSpec dataSpec = + new DataSpec( + Uri.parse(url), + DataSpec.HTTP_METHOD_POST, + httpBody, + /* absoluteStreamPosition= */ 0, + /* position= */ 0, + /* length= */ C.LENGTH_UNSET, + /* key= */ null, + DataSpec.FLAG_ALLOW_GZIP); + DataSourceInputStream inputStream = new DataSourceInputStream(dataSource, dataSpec); + try { + return Util.toByteArray(inputStream); + } catch (InvalidResponseCodeException e) { + // For POST requests, the underlying network stack will not normally follow 307 or 308 + // redirects automatically. Do so manually here. + boolean manuallyRedirect = + (e.responseCode == 307 || e.responseCode == 308) + && manualRedirectCount++ < MAX_MANUAL_REDIRECTS; + String redirectUrl = manuallyRedirect ? getRedirectUrl(e) : null; + if (redirectUrl == null) { + throw e; + } + url = redirectUrl; + } finally { + Util.closeQuietly(inputStream); + } + } + } + + private static @Nullable String getRedirectUrl(InvalidResponseCodeException exception) { + Map> headerFields = exception.headerFields; + if (headerFields != null) { + List locationHeaders = headerFields.get("Location"); + if (locationHeaders != null && !locationHeaders.isEmpty()) { + return locationHeaders.get(0); + } + } + return null; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/KeysExpiredException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/KeysExpiredException.java new file mode 100644 index 0000000000..79208489c4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/KeysExpiredException.java @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +/** + * Thrown when the drm keys loaded into an open session expire. + */ +public final class KeysExpiredException extends Exception { +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/LocalMediaDrmCallback.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/LocalMediaDrmCallback.java new file mode 100644 index 0000000000..23e1859ca8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/LocalMediaDrmCallback.java @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaDrm.KeyRequest; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaDrm.ProvisionRequest; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.util.UUID; + +/** + * A {@link MediaDrmCallback} that provides a fixed response to key requests. Provisioning is not + * supported. This implementation is primarily useful for providing locally stored keys to decrypt + * ClearKey protected content. It is not suitable for use with Widevine or PlayReady protected + * content. + */ +public final class LocalMediaDrmCallback implements MediaDrmCallback { + + private final byte[] keyResponse; + + /** + * @param keyResponse The fixed response for all key requests. + */ + public LocalMediaDrmCallback(byte[] keyResponse) { + this.keyResponse = Assertions.checkNotNull(keyResponse); + } + + @Override + public byte[] executeProvisionRequest(UUID uuid, ProvisionRequest request) throws IOException { + throw new UnsupportedOperationException(); + } + + @Override + public byte[] executeKeyRequest(UUID uuid, KeyRequest request) throws Exception { + return keyResponse; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/MediaDrmCallback.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/MediaDrmCallback.java new file mode 100644 index 0000000000..2bc41f6bec --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/MediaDrmCallback.java @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaDrm.KeyRequest; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaDrm.ProvisionRequest; +import java.util.UUID; + +/** + * Performs {@link ExoMediaDrm} key and provisioning requests. + */ +public interface MediaDrmCallback { + + /** + * Executes a provisioning request. + * + * @param uuid The UUID of the content protection scheme. + * @param request The request. + * @return The response data. + * @throws Exception If an error occurred executing the request. + */ + byte[] executeProvisionRequest(UUID uuid, ProvisionRequest request) throws Exception; + + /** + * Executes a key request. + * + * @param uuid The UUID of the content protection scheme. + * @param request The request. + * @return The response data. + * @throws Exception If an error occurred executing the request. + */ + byte[] executeKeyRequest(UUID uuid, KeyRequest request) throws Exception; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/OfflineLicenseHelper.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/OfflineLicenseHelper.java new file mode 100644 index 0000000000..3ce3879a76 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/OfflineLicenseHelper.java @@ -0,0 +1,266 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.annotation.TargetApi; +import android.media.MediaDrm; +import android.os.ConditionVariable; +import android.os.Handler; +import android.os.HandlerThread; +import android.util.Pair; +import androidx.annotation.Nullable; +import androidx.annotation.RequiresApi; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DefaultDrmSessionManager.Mode; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession.DrmSessionException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.HttpDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.HttpDataSource.Factory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.Collections; +import java.util.Map; +import java.util.UUID; + +/** Helper class to download, renew and release offline licenses. */ +@TargetApi(18) +@RequiresApi(18) +public final class OfflineLicenseHelper { + + private static final DrmInitData DUMMY_DRM_INIT_DATA = new DrmInitData(); + + private final ConditionVariable conditionVariable; + private final DefaultDrmSessionManager drmSessionManager; + private final HandlerThread handlerThread; + + /** + * Instantiates a new instance which uses Widevine CDM. Call {@link #release()} when the instance + * is no longer required. + * + * @param defaultLicenseUrl The default license URL. Used for key requests that do not specify + * their own license URL. + * @param httpDataSourceFactory A factory from which to obtain {@link HttpDataSource} instances. + * @return A new instance which uses Widevine CDM. + * @throws UnsupportedDrmException If the Widevine DRM scheme is unsupported or cannot be + * instantiated. + */ + public static OfflineLicenseHelper newWidevineInstance( + String defaultLicenseUrl, Factory httpDataSourceFactory) + throws UnsupportedDrmException { + return newWidevineInstance(defaultLicenseUrl, false, httpDataSourceFactory, null); + } + + /** + * Instantiates a new instance which uses Widevine CDM. Call {@link #release()} when the instance + * is no longer required. + * + * @param defaultLicenseUrl The default license URL. Used for key requests that do not specify + * their own license URL. + * @param forceDefaultLicenseUrl Whether to use {@code defaultLicenseUrl} for key requests that + * include their own license URL. + * @param httpDataSourceFactory A factory from which to obtain {@link HttpDataSource} instances. + * @return A new instance which uses Widevine CDM. + * @throws UnsupportedDrmException If the Widevine DRM scheme is unsupported or cannot be + * instantiated. + */ + public static OfflineLicenseHelper newWidevineInstance( + String defaultLicenseUrl, boolean forceDefaultLicenseUrl, Factory httpDataSourceFactory) + throws UnsupportedDrmException { + return newWidevineInstance(defaultLicenseUrl, forceDefaultLicenseUrl, httpDataSourceFactory, + null); + } + + /** + * Instantiates a new instance which uses Widevine CDM. Call {@link #release()} when the instance + * is no longer required. + * + * @param defaultLicenseUrl The default license URL. Used for key requests that do not specify + * their own license URL. + * @param forceDefaultLicenseUrl Whether to use {@code defaultLicenseUrl} for key requests that + * include their own license URL. + * @param optionalKeyRequestParameters An optional map of parameters to pass as the last argument + * to {@link MediaDrm#getKeyRequest}. May be null. + * @return A new instance which uses Widevine CDM. + * @throws UnsupportedDrmException If the Widevine DRM scheme is unsupported or cannot be + * instantiated. + * @see DefaultDrmSessionManager.Builder + */ + public static OfflineLicenseHelper newWidevineInstance( + String defaultLicenseUrl, + boolean forceDefaultLicenseUrl, + Factory httpDataSourceFactory, + @Nullable Map optionalKeyRequestParameters) + throws UnsupportedDrmException { + return new OfflineLicenseHelper<>( + C.WIDEVINE_UUID, + FrameworkMediaDrm.DEFAULT_PROVIDER, + new HttpMediaDrmCallback(defaultLicenseUrl, forceDefaultLicenseUrl, httpDataSourceFactory), + optionalKeyRequestParameters); + } + + /** + * Constructs an instance. Call {@link #release()} when the instance is no longer required. + * + * @param uuid The UUID of the drm scheme. + * @param mediaDrmProvider A {@link ExoMediaDrm.Provider}. + * @param callback Performs key and provisioning requests. + * @param optionalKeyRequestParameters An optional map of parameters to pass as the last argument + * to {@link MediaDrm#getKeyRequest}. May be null. + * @see DefaultDrmSessionManager.Builder + */ + @SuppressWarnings("unchecked") + public OfflineLicenseHelper( + UUID uuid, + ExoMediaDrm.Provider mediaDrmProvider, + MediaDrmCallback callback, + @Nullable Map optionalKeyRequestParameters) { + handlerThread = new HandlerThread("OfflineLicenseHelper"); + handlerThread.start(); + conditionVariable = new ConditionVariable(); + DefaultDrmSessionEventListener eventListener = + new DefaultDrmSessionEventListener() { + @Override + public void onDrmKeysLoaded() { + conditionVariable.open(); + } + + @Override + public void onDrmSessionManagerError(Exception e) { + conditionVariable.open(); + } + + @Override + public void onDrmKeysRestored() { + conditionVariable.open(); + } + + @Override + public void onDrmKeysRemoved() { + conditionVariable.open(); + } + }; + if (optionalKeyRequestParameters == null) { + optionalKeyRequestParameters = Collections.emptyMap(); + } + drmSessionManager = + (DefaultDrmSessionManager) + new DefaultDrmSessionManager.Builder() + .setUuidAndExoMediaDrmProvider(uuid, mediaDrmProvider) + .setKeyRequestParameters(optionalKeyRequestParameters) + .build(callback); + drmSessionManager.addListener(new Handler(handlerThread.getLooper()), eventListener); + } + + /** + * Downloads an offline license. + * + * @param drmInitData The {@link DrmInitData} for the content whose license is to be downloaded. + * @return The key set id for the downloaded license. + * @throws DrmSessionException Thrown when a DRM session error occurs. + */ + public synchronized byte[] downloadLicense(DrmInitData drmInitData) throws DrmSessionException { + Assertions.checkArgument(drmInitData != null); + return blockingKeyRequest(DefaultDrmSessionManager.MODE_DOWNLOAD, null, drmInitData); + } + + /** + * Renews an offline license. + * + * @param offlineLicenseKeySetId The key set id of the license to be renewed. + * @return The renewed offline license key set id. + * @throws DrmSessionException Thrown when a DRM session error occurs. + */ + public synchronized byte[] renewLicense(byte[] offlineLicenseKeySetId) + throws DrmSessionException { + Assertions.checkNotNull(offlineLicenseKeySetId); + return blockingKeyRequest( + DefaultDrmSessionManager.MODE_DOWNLOAD, offlineLicenseKeySetId, DUMMY_DRM_INIT_DATA); + } + + /** + * Releases an offline license. + * + * @param offlineLicenseKeySetId The key set id of the license to be released. + * @throws DrmSessionException Thrown when a DRM session error occurs. + */ + public synchronized void releaseLicense(byte[] offlineLicenseKeySetId) + throws DrmSessionException { + Assertions.checkNotNull(offlineLicenseKeySetId); + blockingKeyRequest( + DefaultDrmSessionManager.MODE_RELEASE, offlineLicenseKeySetId, DUMMY_DRM_INIT_DATA); + } + + /** + * Returns the remaining license and playback durations in seconds, for an offline license. + * + * @param offlineLicenseKeySetId The key set id of the license. + * @return The remaining license and playback durations, in seconds. + * @throws DrmSessionException Thrown when a DRM session error occurs. + */ + public synchronized Pair getLicenseDurationRemainingSec(byte[] offlineLicenseKeySetId) + throws DrmSessionException { + Assertions.checkNotNull(offlineLicenseKeySetId); + drmSessionManager.prepare(); + DrmSession drmSession = + openBlockingKeyRequest( + DefaultDrmSessionManager.MODE_QUERY, offlineLicenseKeySetId, DUMMY_DRM_INIT_DATA); + DrmSessionException error = drmSession.getError(); + Pair licenseDurationRemainingSec = + WidevineUtil.getLicenseDurationRemainingSec(drmSession); + drmSession.release(); + drmSessionManager.release(); + if (error != null) { + if (error.getCause() instanceof KeysExpiredException) { + return Pair.create(0L, 0L); + } + throw error; + } + return Assertions.checkNotNull(licenseDurationRemainingSec); + } + + /** + * Releases the helper. Should be called when the helper is no longer required. + */ + public void release() { + handlerThread.quit(); + } + + private byte[] blockingKeyRequest( + @Mode int licenseMode, @Nullable byte[] offlineLicenseKeySetId, DrmInitData drmInitData) + throws DrmSessionException { + drmSessionManager.prepare(); + DrmSession drmSession = openBlockingKeyRequest(licenseMode, offlineLicenseKeySetId, + drmInitData); + DrmSessionException error = drmSession.getError(); + byte[] keySetId = drmSession.getOfflineLicenseKeySetId(); + drmSession.release(); + drmSessionManager.release(); + if (error != null) { + throw error; + } + return Assertions.checkNotNull(keySetId); + } + + private DrmSession openBlockingKeyRequest( + @Mode int licenseMode, @Nullable byte[] offlineLicenseKeySetId, DrmInitData drmInitData) { + drmSessionManager.setMode(licenseMode, offlineLicenseKeySetId); + conditionVariable.close(); + DrmSession drmSession = drmSessionManager.acquireSession(handlerThread.getLooper(), + drmInitData); + // Block current thread until key loading is finished + conditionVariable.block(); + return drmSession; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/UnsupportedDrmException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/UnsupportedDrmException.java new file mode 100644 index 0000000000..4dc9f2b0b2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/UnsupportedDrmException.java @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import androidx.annotation.IntDef; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Thrown when the requested DRM scheme is not supported. + */ +public final class UnsupportedDrmException extends Exception { + + /** + * The reason for the exception. One of {@link #REASON_UNSUPPORTED_SCHEME} or {@link + * #REASON_INSTANTIATION_ERROR}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({REASON_UNSUPPORTED_SCHEME, REASON_INSTANTIATION_ERROR}) + public @interface Reason {} + /** + * The requested DRM scheme is unsupported by the device. + */ + public static final int REASON_UNSUPPORTED_SCHEME = 1; + /** + * There device advertises support for the requested DRM scheme, but there was an error + * instantiating it. The cause can be retrieved using {@link #getCause()}. + */ + public static final int REASON_INSTANTIATION_ERROR = 2; + + /** + * Either {@link #REASON_UNSUPPORTED_SCHEME} or {@link #REASON_INSTANTIATION_ERROR}. + */ + @Reason public final int reason; + + /** + * @param reason {@link #REASON_UNSUPPORTED_SCHEME} or {@link #REASON_INSTANTIATION_ERROR}. + */ + public UnsupportedDrmException(@Reason int reason) { + this.reason = reason; + } + + /** + * @param reason {@link #REASON_UNSUPPORTED_SCHEME} or {@link #REASON_INSTANTIATION_ERROR}. + * @param cause The cause of this exception. + */ + public UnsupportedDrmException(@Reason int reason, Exception cause) { + super(cause); + this.reason = reason; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/WidevineUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/WidevineUtil.java new file mode 100644 index 0000000000..67539bef39 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/WidevineUtil.java @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.util.Map; + +/** + * Utility methods for Widevine. + */ +public final class WidevineUtil { + + /** Widevine specific key status field name for the remaining license duration, in seconds. */ + public static final String PROPERTY_LICENSE_DURATION_REMAINING = "LicenseDurationRemaining"; + /** Widevine specific key status field name for the remaining playback duration, in seconds. */ + public static final String PROPERTY_PLAYBACK_DURATION_REMAINING = "PlaybackDurationRemaining"; + + private WidevineUtil() {} + + /** + * Returns license and playback durations remaining in seconds. + * + * @param drmSession The drm session to query. + * @return A {@link Pair} consisting of the remaining license and playback durations in seconds, + * or null if called before the session has been opened or after it's been released. + */ + public static @Nullable Pair getLicenseDurationRemainingSec( + DrmSession drmSession) { + Map keyStatus = drmSession.queryKeyStatus(); + if (keyStatus == null) { + return null; + } + return new Pair<>(getDurationRemainingSec(keyStatus, PROPERTY_LICENSE_DURATION_REMAINING), + getDurationRemainingSec(keyStatus, PROPERTY_PLAYBACK_DURATION_REMAINING)); + } + + private static long getDurationRemainingSec(Map keyStatus, String property) { + if (keyStatus != null) { + try { + String value = keyStatus.get(property); + if (value != null) { + return Long.parseLong(value); + } + } catch (NumberFormatException e) { + // do nothing. + } + } + return C.TIME_UNSET; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/package-info.java new file mode 100644 index 0000000000..ec885e2ad7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/BinarySearchSeeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/BinarySearchSeeker.java new file mode 100644 index 0000000000..b0b7c7da13 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/BinarySearchSeeker.java @@ -0,0 +1,538 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * A seeker that supports seeking within a stream by searching for the target frame using binary + * search. + * + *

This seeker operates on a stream that contains multiple frames (or samples). Each frame is + * associated with some kind of timestamps, such as stream time, or frame indices. Given a target + * seek time, the seeker will find the corresponding target timestamp, and perform a search + * operation within the stream to identify the target frame and return the byte position in the + * stream of the target frame. + */ +public abstract class BinarySearchSeeker { + + /** A seeker that looks for a given timestamp from an input. */ + protected interface TimestampSeeker { + + /** + * Searches a limited window of the provided input for a target timestamp. The size of the + * window is implementation specific, but should be small enough such that it's reasonable for + * multiple such reads to occur during a seek operation. + * + * @param input The {@link ExtractorInput} from which data should be peeked. + * @param targetTimestamp The target timestamp. + * @return A {@link TimestampSearchResult} that describes the result of the search. + * @throws IOException If an error occurred reading from the input. + * @throws InterruptedException If the thread was interrupted. + */ + TimestampSearchResult searchForTimestamp(ExtractorInput input, long targetTimestamp) + throws IOException, InterruptedException; + + /** Called when a seek operation finishes. */ + default void onSeekFinished() {} + } + + /** + * A {@link SeekTimestampConverter} implementation that returns the seek time itself as the + * timestamp for a seek time position. + */ + public static final class DefaultSeekTimestampConverter implements SeekTimestampConverter { + + @Override + public long timeUsToTargetTime(long timeUs) { + return timeUs; + } + } + + /** + * A converter that converts seek time in stream time into target timestamp for the {@link + * BinarySearchSeeker}. + */ + protected interface SeekTimestampConverter { + /** + * Converts a seek time in microseconds into target timestamp for the {@link + * BinarySearchSeeker}. + */ + long timeUsToTargetTime(long timeUs); + } + + /** + * When seeking within the source, if the offset is smaller than or equal to this value, the seek + * operation will be performed using a skip operation. Otherwise, the source will be reloaded at + * the new seek position. + */ + private static final long MAX_SKIP_BYTES = 256 * 1024; + + protected final BinarySearchSeekMap seekMap; + protected final TimestampSeeker timestampSeeker; + protected @Nullable SeekOperationParams seekOperationParams; + + private final int minimumSearchRange; + + /** + * Constructs an instance. + * + * @param seekTimestampConverter The {@link SeekTimestampConverter} that converts seek time in + * stream time into target timestamp. + * @param timestampSeeker A {@link TimestampSeeker} that will be used to search for timestamps + * within the stream. + * @param durationUs The duration of the stream in microseconds. + * @param floorTimePosition The minimum timestamp value (inclusive) in the stream. + * @param ceilingTimePosition The minimum timestamp value (exclusive) in the stream. + * @param floorBytePosition The starting position of the frame with minimum timestamp value + * (inclusive) in the stream. + * @param ceilingBytePosition The position after the frame with maximum timestamp value in the + * stream. + * @param approxBytesPerFrame Approximated bytes per frame. + * @param minimumSearchRange The minimum byte range that this binary seeker will operate on. If + * the remaining search range is smaller than this value, the search will stop, and the seeker + * will return the position at the floor of the range as the result. + */ + @SuppressWarnings("initialization") + protected BinarySearchSeeker( + SeekTimestampConverter seekTimestampConverter, + TimestampSeeker timestampSeeker, + long durationUs, + long floorTimePosition, + long ceilingTimePosition, + long floorBytePosition, + long ceilingBytePosition, + long approxBytesPerFrame, + int minimumSearchRange) { + this.timestampSeeker = timestampSeeker; + this.minimumSearchRange = minimumSearchRange; + this.seekMap = + new BinarySearchSeekMap( + seekTimestampConverter, + durationUs, + floorTimePosition, + ceilingTimePosition, + floorBytePosition, + ceilingBytePosition, + approxBytesPerFrame); + } + + /** Returns the seek map for the stream. */ + public final SeekMap getSeekMap() { + return seekMap; + } + + /** + * Sets the target time in microseconds within the stream to seek to. + * + * @param timeUs The target time in microseconds within the stream. + */ + public final void setSeekTargetUs(long timeUs) { + if (seekOperationParams != null && seekOperationParams.getSeekTimeUs() == timeUs) { + return; + } + seekOperationParams = createSeekParamsForTargetTimeUs(timeUs); + } + + /** Returns whether the last operation set by {@link #setSeekTargetUs(long)} is still pending. */ + public final boolean isSeeking() { + return seekOperationParams != null; + } + + /** + * Continues to handle the pending seek operation. Returns one of the {@code RESULT_} values from + * {@link Extractor}. + * + * @param input The {@link ExtractorInput} from which data should be read. + * @param seekPositionHolder If {@link Extractor#RESULT_SEEK} is returned, this holder is updated + * to hold the position of the required seek. + * @return One of the {@code RESULT_} values defined in {@link Extractor}. + * @throws IOException If an error occurred reading from the input. + * @throws InterruptedException If the thread was interrupted. + */ + public int handlePendingSeek(ExtractorInput input, PositionHolder seekPositionHolder) + throws InterruptedException, IOException { + TimestampSeeker timestampSeeker = Assertions.checkNotNull(this.timestampSeeker); + while (true) { + SeekOperationParams seekOperationParams = Assertions.checkNotNull(this.seekOperationParams); + long floorPosition = seekOperationParams.getFloorBytePosition(); + long ceilingPosition = seekOperationParams.getCeilingBytePosition(); + long searchPosition = seekOperationParams.getNextSearchBytePosition(); + + if (ceilingPosition - floorPosition <= minimumSearchRange) { + // The seeking range is too small, so we can just continue from the floor position. + markSeekOperationFinished(/* foundTargetFrame= */ false, floorPosition); + return seekToPosition(input, floorPosition, seekPositionHolder); + } + if (!skipInputUntilPosition(input, searchPosition)) { + return seekToPosition(input, searchPosition, seekPositionHolder); + } + + input.resetPeekPosition(); + TimestampSearchResult timestampSearchResult = + timestampSeeker.searchForTimestamp(input, seekOperationParams.getTargetTimePosition()); + + switch (timestampSearchResult.type) { + case TimestampSearchResult.TYPE_POSITION_OVERESTIMATED: + seekOperationParams.updateSeekCeiling( + timestampSearchResult.timestampToUpdate, timestampSearchResult.bytePositionToUpdate); + break; + case TimestampSearchResult.TYPE_POSITION_UNDERESTIMATED: + seekOperationParams.updateSeekFloor( + timestampSearchResult.timestampToUpdate, timestampSearchResult.bytePositionToUpdate); + break; + case TimestampSearchResult.TYPE_TARGET_TIMESTAMP_FOUND: + markSeekOperationFinished( + /* foundTargetFrame= */ true, timestampSearchResult.bytePositionToUpdate); + skipInputUntilPosition(input, timestampSearchResult.bytePositionToUpdate); + return seekToPosition( + input, timestampSearchResult.bytePositionToUpdate, seekPositionHolder); + case TimestampSearchResult.TYPE_NO_TIMESTAMP: + // We can't find any timestamp in the search range from the search position. + // Give up, and just continue reading from the last search position in this case. + markSeekOperationFinished(/* foundTargetFrame= */ false, searchPosition); + return seekToPosition(input, searchPosition, seekPositionHolder); + default: + throw new IllegalStateException("Invalid case"); + } + } + } + + protected SeekOperationParams createSeekParamsForTargetTimeUs(long timeUs) { + return new SeekOperationParams( + timeUs, + seekMap.timeUsToTargetTime(timeUs), + seekMap.floorTimePosition, + seekMap.ceilingTimePosition, + seekMap.floorBytePosition, + seekMap.ceilingBytePosition, + seekMap.approxBytesPerFrame); + } + + protected final void markSeekOperationFinished(boolean foundTargetFrame, long resultPosition) { + seekOperationParams = null; + timestampSeeker.onSeekFinished(); + onSeekOperationFinished(foundTargetFrame, resultPosition); + } + + protected void onSeekOperationFinished(boolean foundTargetFrame, long resultPosition) { + // Do nothing. + } + + protected final boolean skipInputUntilPosition(ExtractorInput input, long position) + throws IOException, InterruptedException { + long bytesToSkip = position - input.getPosition(); + if (bytesToSkip >= 0 && bytesToSkip <= MAX_SKIP_BYTES) { + input.skipFully((int) bytesToSkip); + return true; + } + return false; + } + + protected final int seekToPosition( + ExtractorInput input, long position, PositionHolder seekPositionHolder) { + if (position == input.getPosition()) { + return Extractor.RESULT_CONTINUE; + } else { + seekPositionHolder.position = position; + return Extractor.RESULT_SEEK; + } + } + + /** + * Contains parameters for a pending seek operation by {@link BinarySearchSeeker}. + * + *

This class holds parameters for a binary-search for the {@code targetTimePosition} in the + * range [floorPosition, ceilingPosition). + */ + protected static class SeekOperationParams { + private final long seekTimeUs; + private final long targetTimePosition; + private final long approxBytesPerFrame; + + private long floorTimePosition; + private long ceilingTimePosition; + private long floorBytePosition; + private long ceilingBytePosition; + private long nextSearchBytePosition; + + /** + * Returns the next position in the stream to search for target frame, given [floorBytePosition, + * ceilingBytePosition), with corresponding [floorTimePosition, ceilingTimePosition). + */ + protected static long calculateNextSearchBytePosition( + long targetTimePosition, + long floorTimePosition, + long ceilingTimePosition, + long floorBytePosition, + long ceilingBytePosition, + long approxBytesPerFrame) { + if (floorBytePosition + 1 >= ceilingBytePosition + || floorTimePosition + 1 >= ceilingTimePosition) { + return floorBytePosition; + } + long seekTimeDuration = targetTimePosition - floorTimePosition; + float estimatedBytesPerTimeUnit = + (float) (ceilingBytePosition - floorBytePosition) + / (ceilingTimePosition - floorTimePosition); + // It's better to under-estimate rather than over-estimate, because the extractor + // input can skip forward easily, but cannot rewind easily (it may require a new connection + // to be made). + // Therefore, we should reduce the estimated position by some amount, so it will converge to + // the correct frame earlier. + long bytesToSkip = (long) (seekTimeDuration * estimatedBytesPerTimeUnit); + long confidenceInterval = bytesToSkip / 20; + long estimatedFramePosition = floorBytePosition + bytesToSkip - approxBytesPerFrame; + long estimatedPosition = estimatedFramePosition - confidenceInterval; + return Util.constrainValue(estimatedPosition, floorBytePosition, ceilingBytePosition - 1); + } + + protected SeekOperationParams( + long seekTimeUs, + long targetTimePosition, + long floorTimePosition, + long ceilingTimePosition, + long floorBytePosition, + long ceilingBytePosition, + long approxBytesPerFrame) { + this.seekTimeUs = seekTimeUs; + this.targetTimePosition = targetTimePosition; + this.floorTimePosition = floorTimePosition; + this.ceilingTimePosition = ceilingTimePosition; + this.floorBytePosition = floorBytePosition; + this.ceilingBytePosition = ceilingBytePosition; + this.approxBytesPerFrame = approxBytesPerFrame; + this.nextSearchBytePosition = + calculateNextSearchBytePosition( + targetTimePosition, + floorTimePosition, + ceilingTimePosition, + floorBytePosition, + ceilingBytePosition, + approxBytesPerFrame); + } + + /** + * Returns the floor byte position of the range [floorPosition, ceilingPosition) for this seek + * operation. + */ + private long getFloorBytePosition() { + return floorBytePosition; + } + + /** + * Returns the ceiling byte position of the range [floorPosition, ceilingPosition) for this seek + * operation. + */ + private long getCeilingBytePosition() { + return ceilingBytePosition; + } + + /** Returns the target timestamp as translated from the seek time. */ + private long getTargetTimePosition() { + return targetTimePosition; + } + + /** Returns the target seek time in microseconds. */ + private long getSeekTimeUs() { + return seekTimeUs; + } + + /** Updates the floor constraints (inclusive) of the seek operation. */ + private void updateSeekFloor(long floorTimePosition, long floorBytePosition) { + this.floorTimePosition = floorTimePosition; + this.floorBytePosition = floorBytePosition; + updateNextSearchBytePosition(); + } + + /** Updates the ceiling constraints (exclusive) of the seek operation. */ + private void updateSeekCeiling(long ceilingTimePosition, long ceilingBytePosition) { + this.ceilingTimePosition = ceilingTimePosition; + this.ceilingBytePosition = ceilingBytePosition; + updateNextSearchBytePosition(); + } + + /** Returns the next position in the stream to search. */ + private long getNextSearchBytePosition() { + return nextSearchBytePosition; + } + + private void updateNextSearchBytePosition() { + this.nextSearchBytePosition = + calculateNextSearchBytePosition( + targetTimePosition, + floorTimePosition, + ceilingTimePosition, + floorBytePosition, + ceilingBytePosition, + approxBytesPerFrame); + } + } + + /** + * Represents possible search results for {@link + * TimestampSeeker#searchForTimestamp(ExtractorInput, long)}. + */ + public static final class TimestampSearchResult { + + /** The search found a timestamp that it deems close enough to the given target. */ + public static final int TYPE_TARGET_TIMESTAMP_FOUND = 0; + /** The search found only timestamps larger than the target timestamp. */ + public static final int TYPE_POSITION_OVERESTIMATED = -1; + /** The search found only timestamps smaller than the target timestamp. */ + public static final int TYPE_POSITION_UNDERESTIMATED = -2; + /** The search didn't find any timestamps. */ + public static final int TYPE_NO_TIMESTAMP = -3; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + TYPE_TARGET_TIMESTAMP_FOUND, + TYPE_POSITION_OVERESTIMATED, + TYPE_POSITION_UNDERESTIMATED, + TYPE_NO_TIMESTAMP + }) + @interface Type {} + + public static final TimestampSearchResult NO_TIMESTAMP_IN_RANGE_RESULT = + new TimestampSearchResult(TYPE_NO_TIMESTAMP, C.TIME_UNSET, C.POSITION_UNSET); + + /** The type of the result. */ + @Type private final int type; + + /** + * When {@link #type} is {@link #TYPE_POSITION_OVERESTIMATED}, the {@link + * SeekOperationParams#ceilingTimePosition} should be updated with this value. When {@link + * #type} is {@link #TYPE_POSITION_UNDERESTIMATED}, the {@link + * SeekOperationParams#floorTimePosition} should be updated with this value. + */ + private final long timestampToUpdate; + /** + * When {@link #type} is {@link #TYPE_POSITION_OVERESTIMATED}, the {@link + * SeekOperationParams#ceilingBytePosition} should be updated with this value. When {@link + * #type} is {@link #TYPE_POSITION_UNDERESTIMATED}, the {@link + * SeekOperationParams#floorBytePosition} should be updated with this value. + */ + private final long bytePositionToUpdate; + + private TimestampSearchResult( + @Type int type, long timestampToUpdate, long bytePositionToUpdate) { + this.type = type; + this.timestampToUpdate = timestampToUpdate; + this.bytePositionToUpdate = bytePositionToUpdate; + } + + /** + * Returns a result to signal that the current position in the input stream overestimates the + * true position of the target frame, and the {@link BinarySearchSeeker} should modify its + * {@link SeekOperationParams}'s ceiling timestamp and byte position using the given values. + */ + public static TimestampSearchResult overestimatedResult( + long newCeilingTimestamp, long newCeilingBytePosition) { + return new TimestampSearchResult( + TYPE_POSITION_OVERESTIMATED, newCeilingTimestamp, newCeilingBytePosition); + } + + /** + * Returns a result to signal that the current position in the input stream underestimates the + * true position of the target frame, and the {@link BinarySearchSeeker} should modify its + * {@link SeekOperationParams}'s floor timestamp and byte position using the given values. + */ + public static TimestampSearchResult underestimatedResult( + long newFloorTimestamp, long newCeilingBytePosition) { + return new TimestampSearchResult( + TYPE_POSITION_UNDERESTIMATED, newFloorTimestamp, newCeilingBytePosition); + } + + /** + * Returns a result to signal that the target timestamp has been found at {@code + * resultBytePosition}, and the seek operation can stop. + */ + public static TimestampSearchResult targetFoundResult(long resultBytePosition) { + return new TimestampSearchResult( + TYPE_TARGET_TIMESTAMP_FOUND, C.TIME_UNSET, resultBytePosition); + } + } + + /** + * A {@link SeekMap} implementation that returns the estimated byte location from {@link + * SeekOperationParams#calculateNextSearchBytePosition(long, long, long, long, long, long)} for + * each {@link #getSeekPoints(long)} query. + */ + public static class BinarySearchSeekMap implements SeekMap { + private final SeekTimestampConverter seekTimestampConverter; + private final long durationUs; + private final long floorTimePosition; + private final long ceilingTimePosition; + private final long floorBytePosition; + private final long ceilingBytePosition; + private final long approxBytesPerFrame; + + /** Constructs a new instance of this seek map. */ + public BinarySearchSeekMap( + SeekTimestampConverter seekTimestampConverter, + long durationUs, + long floorTimePosition, + long ceilingTimePosition, + long floorBytePosition, + long ceilingBytePosition, + long approxBytesPerFrame) { + this.seekTimestampConverter = seekTimestampConverter; + this.durationUs = durationUs; + this.floorTimePosition = floorTimePosition; + this.ceilingTimePosition = ceilingTimePosition; + this.floorBytePosition = floorBytePosition; + this.ceilingBytePosition = ceilingBytePosition; + this.approxBytesPerFrame = approxBytesPerFrame; + } + + @Override + public boolean isSeekable() { + return true; + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + long nextSearchPosition = + SeekOperationParams.calculateNextSearchBytePosition( + /* targetTimePosition= */ seekTimestampConverter.timeUsToTargetTime(timeUs), + /* floorTimePosition= */ floorTimePosition, + /* ceilingTimePosition= */ ceilingTimePosition, + /* floorBytePosition= */ floorBytePosition, + /* ceilingBytePosition= */ ceilingBytePosition, + /* approxBytesPerFrame= */ approxBytesPerFrame); + return new SeekPoints(new SeekPoint(timeUs, nextSearchPosition)); + } + + @Override + public long getDurationUs() { + return durationUs; + } + + /** @see SeekTimestampConverter#timeUsToTargetTime(long) */ + public long timeUsToTargetTime(long timeUs) { + return seekTimestampConverter.timeUsToTargetTime(timeUs); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ChunkIndex.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ChunkIndex.java new file mode 100644 index 0000000000..4fdf9f3c55 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ChunkIndex.java @@ -0,0 +1,121 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** + * Defines chunks of samples within a media stream. + */ +public final class ChunkIndex implements SeekMap { + + /** + * The number of chunks. + */ + public final int length; + + /** + * The chunk sizes, in bytes. + */ + public final int[] sizes; + + /** + * The chunk byte offsets. + */ + public final long[] offsets; + + /** + * The chunk durations, in microseconds. + */ + public final long[] durationsUs; + + /** + * The start time of each chunk, in microseconds. + */ + public final long[] timesUs; + + private final long durationUs; + + /** + * @param sizes The chunk sizes, in bytes. + * @param offsets The chunk byte offsets. + * @param durationsUs The chunk durations, in microseconds. + * @param timesUs The start time of each chunk, in microseconds. + */ + public ChunkIndex(int[] sizes, long[] offsets, long[] durationsUs, long[] timesUs) { + this.sizes = sizes; + this.offsets = offsets; + this.durationsUs = durationsUs; + this.timesUs = timesUs; + length = sizes.length; + if (length > 0) { + durationUs = durationsUs[length - 1] + timesUs[length - 1]; + } else { + durationUs = 0; + } + } + + /** + * Obtains the index of the chunk corresponding to a given time. + * + * @param timeUs The time, in microseconds. + * @return The index of the corresponding chunk. + */ + public int getChunkIndex(long timeUs) { + return Util.binarySearchFloor(timesUs, timeUs, true, true); + } + + // SeekMap implementation. + + @Override + public boolean isSeekable() { + return true; + } + + @Override + public long getDurationUs() { + return durationUs; + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + int chunkIndex = getChunkIndex(timeUs); + SeekPoint seekPoint = new SeekPoint(timesUs[chunkIndex], offsets[chunkIndex]); + if (seekPoint.timeUs >= timeUs || chunkIndex == length - 1) { + return new SeekPoints(seekPoint); + } else { + SeekPoint nextSeekPoint = new SeekPoint(timesUs[chunkIndex + 1], offsets[chunkIndex + 1]); + return new SeekPoints(seekPoint, nextSeekPoint); + } + } + + @Override + public String toString() { + return "ChunkIndex(" + + "length=" + + length + + ", sizes=" + + Arrays.toString(sizes) + + ", offsets=" + + Arrays.toString(offsets) + + ", timeUs=" + + Arrays.toString(timesUs) + + ", durationsUs=" + + Arrays.toString(durationsUs) + + ")"; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ConstantBitrateSeekMap.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ConstantBitrateSeekMap.java new file mode 100644 index 0000000000..215aac0e6d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ConstantBitrateSeekMap.java @@ -0,0 +1,123 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * A {@link SeekMap} implementation that assumes the stream has a constant bitrate and consists of + * multiple independent frames of the same size. Seek points are calculated to be at frame + * boundaries. + */ +public class ConstantBitrateSeekMap implements SeekMap { + + private final long inputLength; + private final long firstFrameBytePosition; + private final int frameSize; + private final long dataSize; + private final int bitrate; + private final long durationUs; + + /** + * Constructs a new instance from a stream. + * + * @param inputLength The length of the stream in bytes, or {@link C#LENGTH_UNSET} if unknown. + * @param firstFrameBytePosition The byte-position of the first frame in the stream. + * @param bitrate The bitrate (which is assumed to be constant in the stream). + * @param frameSize The size of each frame in the stream in bytes. May be {@link C#LENGTH_UNSET} + * if unknown. + */ + public ConstantBitrateSeekMap( + long inputLength, long firstFrameBytePosition, int bitrate, int frameSize) { + this.inputLength = inputLength; + this.firstFrameBytePosition = firstFrameBytePosition; + this.frameSize = frameSize == C.LENGTH_UNSET ? 1 : frameSize; + this.bitrate = bitrate; + + if (inputLength == C.LENGTH_UNSET) { + dataSize = C.LENGTH_UNSET; + durationUs = C.TIME_UNSET; + } else { + dataSize = inputLength - firstFrameBytePosition; + durationUs = getTimeUsAtPosition(inputLength, firstFrameBytePosition, bitrate); + } + } + + @Override + public boolean isSeekable() { + return dataSize != C.LENGTH_UNSET; + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + if (dataSize == C.LENGTH_UNSET) { + return new SeekPoints(new SeekPoint(0, firstFrameBytePosition)); + } + long seekFramePosition = getFramePositionForTimeUs(timeUs); + long seekTimeUs = getTimeUsAtPosition(seekFramePosition); + SeekPoint seekPoint = new SeekPoint(seekTimeUs, seekFramePosition); + if (seekTimeUs >= timeUs || seekFramePosition + frameSize >= inputLength) { + return new SeekPoints(seekPoint); + } else { + long secondSeekPosition = seekFramePosition + frameSize; + long secondSeekTimeUs = getTimeUsAtPosition(secondSeekPosition); + SeekPoint secondSeekPoint = new SeekPoint(secondSeekTimeUs, secondSeekPosition); + return new SeekPoints(seekPoint, secondSeekPoint); + } + } + + @Override + public long getDurationUs() { + return durationUs; + } + + /** + * Returns the stream time in microseconds for a given position. + * + * @param position The stream byte-position. + * @return The stream time in microseconds for the given position. + */ + public long getTimeUsAtPosition(long position) { + return getTimeUsAtPosition(position, firstFrameBytePosition, bitrate); + } + + // Internal methods + + /** + * Returns the stream time in microseconds for a given stream position. + * + * @param position The stream byte-position. + * @param firstFrameBytePosition The position of the first frame in the stream. + * @param bitrate The bitrate (which is assumed to be constant in the stream). + * @return The stream time in microseconds for the given stream position. + */ + private static long getTimeUsAtPosition(long position, long firstFrameBytePosition, int bitrate) { + return Math.max(0, position - firstFrameBytePosition) + * C.BITS_PER_BYTE + * C.MICROS_PER_SECOND + / bitrate; + } + + private long getFramePositionForTimeUs(long timeUs) { + long positionOffset = (timeUs * bitrate) / (C.MICROS_PER_SECOND * C.BITS_PER_BYTE); + // Constrain to nearest preceding frame offset. + positionOffset = (positionOffset / frameSize) * frameSize; + positionOffset = + Util.constrainValue(positionOffset, /* min= */ 0, /* max= */ dataSize - frameSize); + return firstFrameBytePosition + positionOffset; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DefaultExtractorInput.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DefaultExtractorInput.java new file mode 100644 index 0000000000..93009f2d5c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DefaultExtractorInput.java @@ -0,0 +1,308 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.EOFException; +import java.io.IOException; +import java.util.Arrays; + +/** + * An {@link ExtractorInput} that wraps a {@link DataSource}. + */ +public final class DefaultExtractorInput implements ExtractorInput { + + private static final int PEEK_MIN_FREE_SPACE_AFTER_RESIZE = 64 * 1024; + private static final int PEEK_MAX_FREE_SPACE = 512 * 1024; + private static final int SCRATCH_SPACE_SIZE = 4096; + + private final byte[] scratchSpace; + private final DataSource dataSource; + private final long streamLength; + + private long position; + private byte[] peekBuffer; + private int peekBufferPosition; + private int peekBufferLength; + + /** + * @param dataSource The wrapped {@link DataSource}. + * @param position The initial position in the stream. + * @param length The length of the stream, or {@link C#LENGTH_UNSET} if it is unknown. + */ + public DefaultExtractorInput(DataSource dataSource, long position, long length) { + this.dataSource = dataSource; + this.position = position; + this.streamLength = length; + peekBuffer = new byte[PEEK_MIN_FREE_SPACE_AFTER_RESIZE]; + scratchSpace = new byte[SCRATCH_SPACE_SIZE]; + } + + @Override + public int read(byte[] target, int offset, int length) throws IOException, InterruptedException { + int bytesRead = readFromPeekBuffer(target, offset, length); + if (bytesRead == 0) { + bytesRead = + readFromDataSource( + target, offset, length, /* bytesAlreadyRead= */ 0, /* allowEndOfInput= */ true); + } + commitBytesRead(bytesRead); + return bytesRead; + } + + @Override + public boolean readFully(byte[] target, int offset, int length, boolean allowEndOfInput) + throws IOException, InterruptedException { + int bytesRead = readFromPeekBuffer(target, offset, length); + while (bytesRead < length && bytesRead != C.RESULT_END_OF_INPUT) { + bytesRead = readFromDataSource(target, offset, length, bytesRead, allowEndOfInput); + } + commitBytesRead(bytesRead); + return bytesRead != C.RESULT_END_OF_INPUT; + } + + @Override + public void readFully(byte[] target, int offset, int length) + throws IOException, InterruptedException { + readFully(target, offset, length, false); + } + + @Override + public int skip(int length) throws IOException, InterruptedException { + int bytesSkipped = skipFromPeekBuffer(length); + if (bytesSkipped == 0) { + bytesSkipped = + readFromDataSource(scratchSpace, 0, Math.min(length, scratchSpace.length), 0, true); + } + commitBytesRead(bytesSkipped); + return bytesSkipped; + } + + @Override + public boolean skipFully(int length, boolean allowEndOfInput) + throws IOException, InterruptedException { + int bytesSkipped = skipFromPeekBuffer(length); + while (bytesSkipped < length && bytesSkipped != C.RESULT_END_OF_INPUT) { + int minLength = Math.min(length, bytesSkipped + scratchSpace.length); + bytesSkipped = + readFromDataSource(scratchSpace, -bytesSkipped, minLength, bytesSkipped, allowEndOfInput); + } + commitBytesRead(bytesSkipped); + return bytesSkipped != C.RESULT_END_OF_INPUT; + } + + @Override + public void skipFully(int length) throws IOException, InterruptedException { + skipFully(length, false); + } + + @Override + public int peek(byte[] target, int offset, int length) throws IOException, InterruptedException { + ensureSpaceForPeek(length); + int peekBufferRemainingBytes = peekBufferLength - peekBufferPosition; + int bytesPeeked; + if (peekBufferRemainingBytes == 0) { + bytesPeeked = + readFromDataSource( + peekBuffer, + peekBufferPosition, + length, + /* bytesAlreadyRead= */ 0, + /* allowEndOfInput= */ true); + if (bytesPeeked == C.RESULT_END_OF_INPUT) { + return C.RESULT_END_OF_INPUT; + } + peekBufferLength += bytesPeeked; + } else { + bytesPeeked = Math.min(length, peekBufferRemainingBytes); + } + System.arraycopy(peekBuffer, peekBufferPosition, target, offset, bytesPeeked); + peekBufferPosition += bytesPeeked; + return bytesPeeked; + } + + @Override + public boolean peekFully(byte[] target, int offset, int length, boolean allowEndOfInput) + throws IOException, InterruptedException { + if (!advancePeekPosition(length, allowEndOfInput)) { + return false; + } + System.arraycopy(peekBuffer, peekBufferPosition - length, target, offset, length); + return true; + } + + @Override + public void peekFully(byte[] target, int offset, int length) + throws IOException, InterruptedException { + peekFully(target, offset, length, false); + } + + @Override + public boolean advancePeekPosition(int length, boolean allowEndOfInput) + throws IOException, InterruptedException { + ensureSpaceForPeek(length); + int bytesPeeked = peekBufferLength - peekBufferPosition; + while (bytesPeeked < length) { + bytesPeeked = readFromDataSource(peekBuffer, peekBufferPosition, length, bytesPeeked, + allowEndOfInput); + if (bytesPeeked == C.RESULT_END_OF_INPUT) { + return false; + } + peekBufferLength = peekBufferPosition + bytesPeeked; + } + peekBufferPosition += length; + return true; + } + + @Override + public void advancePeekPosition(int length) throws IOException, InterruptedException { + advancePeekPosition(length, false); + } + + @Override + public void resetPeekPosition() { + peekBufferPosition = 0; + } + + @Override + public long getPeekPosition() { + return position + peekBufferPosition; + } + + @Override + public long getPosition() { + return position; + } + + @Override + public long getLength() { + return streamLength; + } + + @Override + public void setRetryPosition(long position, E e) throws E { + Assertions.checkArgument(position >= 0); + this.position = position; + throw e; + } + + /** + * Ensures {@code peekBuffer} is large enough to store at least {@code length} bytes from the + * current peek position. + */ + private void ensureSpaceForPeek(int length) { + int requiredLength = peekBufferPosition + length; + if (requiredLength > peekBuffer.length) { + int newPeekCapacity = Util.constrainValue(peekBuffer.length * 2, + requiredLength + PEEK_MIN_FREE_SPACE_AFTER_RESIZE, requiredLength + PEEK_MAX_FREE_SPACE); + peekBuffer = Arrays.copyOf(peekBuffer, newPeekCapacity); + } + } + + /** + * Skips from the peek buffer. + * + * @param length The maximum number of bytes to skip from the peek buffer. + * @return The number of bytes skipped. + */ + private int skipFromPeekBuffer(int length) { + int bytesSkipped = Math.min(peekBufferLength, length); + updatePeekBuffer(bytesSkipped); + return bytesSkipped; + } + + /** + * Reads from the peek buffer. + * + * @param target A target array into which data should be written. + * @param offset The offset into the target array at which to write. + * @param length The maximum number of bytes to read from the peek buffer. + * @return The number of bytes read. + */ + private int readFromPeekBuffer(byte[] target, int offset, int length) { + if (peekBufferLength == 0) { + return 0; + } + int peekBytes = Math.min(peekBufferLength, length); + System.arraycopy(peekBuffer, 0, target, offset, peekBytes); + updatePeekBuffer(peekBytes); + return peekBytes; + } + + /** + * Updates the peek buffer's length, position and contents after consuming data. + * + * @param bytesConsumed The number of bytes consumed from the peek buffer. + */ + private void updatePeekBuffer(int bytesConsumed) { + peekBufferLength -= bytesConsumed; + peekBufferPosition = 0; + byte[] newPeekBuffer = peekBuffer; + if (peekBufferLength < peekBuffer.length - PEEK_MAX_FREE_SPACE) { + newPeekBuffer = new byte[peekBufferLength + PEEK_MIN_FREE_SPACE_AFTER_RESIZE]; + } + System.arraycopy(peekBuffer, bytesConsumed, newPeekBuffer, 0, peekBufferLength); + peekBuffer = newPeekBuffer; + } + + /** + * Starts or continues a read from the data source. + * + * @param target A target array into which data should be written. + * @param offset The offset into the target array at which to write. + * @param length The maximum number of bytes to read from the input. + * @param bytesAlreadyRead The number of bytes already read from the input. + * @param allowEndOfInput True if encountering the end of the input having read no data is + * allowed, and should result in {@link C#RESULT_END_OF_INPUT} being returned. False if it + * should be considered an error, causing an {@link EOFException} to be thrown. + * @return The total number of bytes read so far, or {@link C#RESULT_END_OF_INPUT} if + * {@code allowEndOfInput} is true and the input has ended having read no bytes. + * @throws EOFException If the end of input was encountered having partially satisfied the read + * (i.e. having read at least one byte, but fewer than {@code length}), or if no bytes were + * read and {@code allowEndOfInput} is false. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + private int readFromDataSource(byte[] target, int offset, int length, int bytesAlreadyRead, + boolean allowEndOfInput) throws InterruptedException, IOException { + if (Thread.interrupted()) { + throw new InterruptedException(); + } + int bytesRead = dataSource.read(target, offset + bytesAlreadyRead, length - bytesAlreadyRead); + if (bytesRead == C.RESULT_END_OF_INPUT) { + if (bytesAlreadyRead == 0 && allowEndOfInput) { + return C.RESULT_END_OF_INPUT; + } + throw new EOFException(); + } + return bytesAlreadyRead + bytesRead; + } + + /** + * Advances the position by the specified number of bytes read. + * + * @param bytesRead The number of bytes read. + */ + private void commitBytesRead(int bytesRead) { + if (bytesRead != C.RESULT_END_OF_INPUT) { + position += bytesRead; + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DefaultExtractorsFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DefaultExtractorsFactory.java new file mode 100644 index 0000000000..8425f89860 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DefaultExtractorsFactory.java @@ -0,0 +1,269 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.amr.AmrExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.flac.FlacExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.flv.FlvExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mkv.MatroskaExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp3.Mp3Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4.FragmentedMp4Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4.Mp4Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ogg.OggExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.Ac3Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.Ac4Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.AdtsExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.DefaultTsPayloadReaderFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.PsExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.wav.WavExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import java.lang.reflect.Constructor; + +/** + * An {@link ExtractorsFactory} that provides an array of extractors for the following formats: + * + *

    + *
  • MP4, including M4A ({@link Mp4Extractor}) + *
  • fMP4 ({@link FragmentedMp4Extractor}) + *
  • Matroska and WebM ({@link MatroskaExtractor}) + *
  • Ogg Vorbis/FLAC ({@link OggExtractor} + *
  • MP3 ({@link Mp3Extractor}) + *
  • AAC ({@link AdtsExtractor}) + *
  • MPEG TS ({@link TsExtractor}) + *
  • MPEG PS ({@link PsExtractor}) + *
  • FLV ({@link FlvExtractor}) + *
  • WAV ({@link WavExtractor}) + *
  • AC3 ({@link Ac3Extractor}) + *
  • AC4 ({@link Ac4Extractor}) + *
  • AMR ({@link AmrExtractor}) + *
  • FLAC + *
      + *
    • If available, the FLAC extension extractor is used. + *
    • Otherwise, the core {@link FlacExtractor} is used. Note that Android devices do not + * generally include a FLAC decoder before API 27. This can be worked around by using + * the FLAC extension or the FFmpeg extension. + *
    + *
+ */ +public final class DefaultExtractorsFactory implements ExtractorsFactory { + + private static final Constructor FLAC_EXTENSION_EXTRACTOR_CONSTRUCTOR; + + static { + Constructor flacExtensionExtractorConstructor = null; + try { + // LINT.IfChange + @SuppressWarnings("nullness:argument.type.incompatible") + boolean isFlacNativeLibraryAvailable = + Boolean.TRUE.equals( + Class.forName("com.google.android.exoplayer2.ext.flac.FlacLibrary") + .getMethod("isAvailable") + .invoke(/* obj= */ null)); + if (isFlacNativeLibraryAvailable) { + flacExtensionExtractorConstructor = + Class.forName("com.google.android.exoplayer2.ext.flac.FlacExtractor") + .asSubclass(Extractor.class) + .getConstructor(); + } + // LINT.ThenChange(../../../../../../../../proguard-rules.txt) + } catch (ClassNotFoundException e) { + // Expected if the app was built without the FLAC extension. + } catch (Exception e) { + // The FLAC extension is present, but instantiation failed. + throw new RuntimeException("Error instantiating FLAC extension", e); + } + FLAC_EXTENSION_EXTRACTOR_CONSTRUCTOR = flacExtensionExtractorConstructor; + } + + private boolean constantBitrateSeekingEnabled; + private @AdtsExtractor.Flags int adtsFlags; + private @AmrExtractor.Flags int amrFlags; + private @MatroskaExtractor.Flags int matroskaFlags; + private @Mp4Extractor.Flags int mp4Flags; + private @FragmentedMp4Extractor.Flags int fragmentedMp4Flags; + private @Mp3Extractor.Flags int mp3Flags; + private @TsExtractor.Mode int tsMode; + private @DefaultTsPayloadReaderFactory.Flags int tsFlags; + + public DefaultExtractorsFactory() { + tsMode = TsExtractor.MODE_SINGLE_PMT; + } + + /** + * Convenience method to set whether approximate seeking using constant bitrate assumptions should + * be enabled for all extractors that support it. If set to true, the flags required to enable + * this functionality will be OR'd with those passed to the setters when creating extractor + * instances. If set to false then the flags passed to the setters will be used without + * modification. + * + * @param constantBitrateSeekingEnabled Whether approximate seeking using a constant bitrate + * assumption should be enabled for all extractors that support it. + * @return The factory, for convenience. + */ + public synchronized DefaultExtractorsFactory setConstantBitrateSeekingEnabled( + boolean constantBitrateSeekingEnabled) { + this.constantBitrateSeekingEnabled = constantBitrateSeekingEnabled; + return this; + } + + /** + * Sets flags for {@link AdtsExtractor} instances created by the factory. + * + * @see AdtsExtractor#AdtsExtractor(int) + * @param flags The flags to use. + * @return The factory, for convenience. + */ + public synchronized DefaultExtractorsFactory setAdtsExtractorFlags( + @AdtsExtractor.Flags int flags) { + this.adtsFlags = flags; + return this; + } + + /** + * Sets flags for {@link AmrExtractor} instances created by the factory. + * + * @see AmrExtractor#AmrExtractor(int) + * @param flags The flags to use. + * @return The factory, for convenience. + */ + public synchronized DefaultExtractorsFactory setAmrExtractorFlags(@AmrExtractor.Flags int flags) { + this.amrFlags = flags; + return this; + } + + /** + * Sets flags for {@link MatroskaExtractor} instances created by the factory. + * + * @see MatroskaExtractor#MatroskaExtractor(int) + * @param flags The flags to use. + * @return The factory, for convenience. + */ + public synchronized DefaultExtractorsFactory setMatroskaExtractorFlags( + @MatroskaExtractor.Flags int flags) { + this.matroskaFlags = flags; + return this; + } + + /** + * Sets flags for {@link Mp4Extractor} instances created by the factory. + * + * @see Mp4Extractor#Mp4Extractor(int) + * @param flags The flags to use. + * @return The factory, for convenience. + */ + public synchronized DefaultExtractorsFactory setMp4ExtractorFlags(@Mp4Extractor.Flags int flags) { + this.mp4Flags = flags; + return this; + } + + /** + * Sets flags for {@link FragmentedMp4Extractor} instances created by the factory. + * + * @see FragmentedMp4Extractor#FragmentedMp4Extractor(int) + * @param flags The flags to use. + * @return The factory, for convenience. + */ + public synchronized DefaultExtractorsFactory setFragmentedMp4ExtractorFlags( + @FragmentedMp4Extractor.Flags int flags) { + this.fragmentedMp4Flags = flags; + return this; + } + + /** + * Sets flags for {@link Mp3Extractor} instances created by the factory. + * + * @see Mp3Extractor#Mp3Extractor(int) + * @param flags The flags to use. + * @return The factory, for convenience. + */ + public synchronized DefaultExtractorsFactory setMp3ExtractorFlags(@Mp3Extractor.Flags int flags) { + mp3Flags = flags; + return this; + } + + /** + * Sets the mode for {@link TsExtractor} instances created by the factory. + * + * @see TsExtractor#TsExtractor(int, TimestampAdjuster, TsPayloadReader.Factory) + * @param mode The mode to use. + * @return The factory, for convenience. + */ + public synchronized DefaultExtractorsFactory setTsExtractorMode(@TsExtractor.Mode int mode) { + tsMode = mode; + return this; + } + + /** + * Sets flags for {@link DefaultTsPayloadReaderFactory}s used by {@link TsExtractor} instances + * created by the factory. + * + * @see TsExtractor#TsExtractor(int) + * @param flags The flags to use. + * @return The factory, for convenience. + */ + public synchronized DefaultExtractorsFactory setTsExtractorFlags( + @DefaultTsPayloadReaderFactory.Flags int flags) { + tsFlags = flags; + return this; + } + + @Override + public synchronized Extractor[] createExtractors() { + Extractor[] extractors = new Extractor[14]; + extractors[0] = new MatroskaExtractor(matroskaFlags); + extractors[1] = new FragmentedMp4Extractor(fragmentedMp4Flags); + extractors[2] = new Mp4Extractor(mp4Flags); + extractors[3] = + new Mp3Extractor( + mp3Flags + | (constantBitrateSeekingEnabled + ? Mp3Extractor.FLAG_ENABLE_CONSTANT_BITRATE_SEEKING + : 0)); + extractors[4] = + new AdtsExtractor( + adtsFlags + | (constantBitrateSeekingEnabled + ? AdtsExtractor.FLAG_ENABLE_CONSTANT_BITRATE_SEEKING + : 0)); + extractors[5] = new Ac3Extractor(); + extractors[6] = new TsExtractor(tsMode, tsFlags); + extractors[7] = new FlvExtractor(); + extractors[8] = new OggExtractor(); + extractors[9] = new PsExtractor(); + extractors[10] = new WavExtractor(); + extractors[11] = + new AmrExtractor( + amrFlags + | (constantBitrateSeekingEnabled + ? AmrExtractor.FLAG_ENABLE_CONSTANT_BITRATE_SEEKING + : 0)); + extractors[12] = new Ac4Extractor(); + if (FLAC_EXTENSION_EXTRACTOR_CONSTRUCTOR != null) { + try { + extractors[13] = FLAC_EXTENSION_EXTRACTOR_CONSTRUCTOR.newInstance(); + } catch (Exception e) { + // Should never happen. + throw new IllegalStateException("Unexpected error creating FLAC extractor", e); + } + } else { + extractors[13] = new FlacExtractor(); + } + return extractors; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DummyExtractorOutput.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DummyExtractorOutput.java new file mode 100644 index 0000000000..06c90ae874 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DummyExtractorOutput.java @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +/** A dummy {@link ExtractorOutput} implementation. */ +public final class DummyExtractorOutput implements ExtractorOutput { + + @Override + public TrackOutput track(int id, int type) { + return new DummyTrackOutput(); + } + + @Override + public void endTracks() { + // Do nothing. + } + + @Override + public void seekMap(SeekMap seekMap) { + // Do nothing. + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DummyTrackOutput.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DummyTrackOutput.java new file mode 100644 index 0000000000..6df947731d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/DummyTrackOutput.java @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.EOFException; +import java.io.IOException; + +/** + * A dummy {@link TrackOutput} implementation. + */ +public final class DummyTrackOutput implements TrackOutput { + + @Override + public void format(Format format) { + // Do nothing. + } + + @Override + public int sampleData(ExtractorInput input, int length, boolean allowEndOfInput) + throws IOException, InterruptedException { + int bytesSkipped = input.skip(length); + if (bytesSkipped == C.RESULT_END_OF_INPUT) { + if (allowEndOfInput) { + return C.RESULT_END_OF_INPUT; + } + throw new EOFException(); + } + return bytesSkipped; + } + + @Override + public void sampleData(ParsableByteArray data, int length) { + data.skipBytes(length); + } + + @Override + public void sampleMetadata( + long timeUs, + @C.BufferFlags int flags, + int size, + int offset, + @Nullable CryptoData cryptoData) { + // Do nothing. + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/Extractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/Extractor.java new file mode 100644 index 0000000000..aeb7028c3f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/Extractor.java @@ -0,0 +1,125 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Extracts media data from a container format. + */ +public interface Extractor { + + /** + * Returned by {@link #read(ExtractorInput, PositionHolder)} if the {@link ExtractorInput} passed + * to the next {@link #read(ExtractorInput, PositionHolder)} is required to provide data + * continuing from the position in the stream reached by the returning call. + */ + int RESULT_CONTINUE = 0; + /** + * Returned by {@link #read(ExtractorInput, PositionHolder)} if the {@link ExtractorInput} passed + * to the next {@link #read(ExtractorInput, PositionHolder)} is required to provide data starting + * from a specified position in the stream. + */ + int RESULT_SEEK = 1; + /** + * Returned by {@link #read(ExtractorInput, PositionHolder)} if the end of the + * {@link ExtractorInput} was reached. Equal to {@link C#RESULT_END_OF_INPUT}. + */ + int RESULT_END_OF_INPUT = C.RESULT_END_OF_INPUT; + + /** + * Result values that can be returned by {@link #read(ExtractorInput, PositionHolder)}. One of + * {@link #RESULT_CONTINUE}, {@link #RESULT_SEEK} or {@link #RESULT_END_OF_INPUT}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef(value = {RESULT_CONTINUE, RESULT_SEEK, RESULT_END_OF_INPUT}) + @interface ReadResult {} + + /** + * Returns whether this extractor can extract samples from the {@link ExtractorInput}, which must + * provide data from the start of the stream. + *

+ * If {@code true} is returned, the {@code input}'s reading position may have been modified. + * Otherwise, only its peek position may have been modified. + * + * @param input The {@link ExtractorInput} from which data should be peeked/read. + * @return Whether this extractor can read the provided input. + * @throws IOException If an error occurred reading from the input. + * @throws InterruptedException If the thread was interrupted. + */ + boolean sniff(ExtractorInput input) throws IOException, InterruptedException; + + /** + * Initializes the extractor with an {@link ExtractorOutput}. Called at most once. + * + * @param output An {@link ExtractorOutput} to receive extracted data. + */ + void init(ExtractorOutput output); + + /** + * Extracts data read from a provided {@link ExtractorInput}. Must not be called before {@link + * #init(ExtractorOutput)}. + * + *

A single call to this method will block until some progress has been made, but will not + * block for longer than this. Hence each call will consume only a small amount of input data. + * + *

In the common case, {@link #RESULT_CONTINUE} is returned to indicate that the {@link + * ExtractorInput} passed to the next read is required to provide data continuing from the + * position in the stream reached by the returning call. If the extractor requires data to be + * provided from a different position, then that position is set in {@code seekPosition} and + * {@link #RESULT_SEEK} is returned. If the extractor reached the end of the data provided by the + * {@link ExtractorInput}, then {@link #RESULT_END_OF_INPUT} is returned. + * + *

When this method throws an {@link IOException} or an {@link InterruptedException}, + * extraction may continue by providing an {@link ExtractorInput} with an unchanged {@link + * ExtractorInput#getPosition() read position} to a subsequent call to this method. + * + * @param input The {@link ExtractorInput} from which data should be read. + * @param seekPosition If {@link #RESULT_SEEK} is returned, this holder is updated to hold the + * position of the required data. + * @return One of the {@code RESULT_} values defined in this interface. + * @throws IOException If an error occurred reading from the input. + * @throws InterruptedException If the thread was interrupted. + */ + @ReadResult + int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException; + + /** + * Notifies the extractor that a seek has occurred. + *

+ * Following a call to this method, the {@link ExtractorInput} passed to the next invocation of + * {@link #read(ExtractorInput, PositionHolder)} is required to provide data starting from {@code + * position} in the stream. Valid random access positions are the start of the stream and + * positions that can be obtained from any {@link SeekMap} passed to the {@link ExtractorOutput}. + * + * @param position The byte offset in the stream from which data will be provided. + * @param timeUs The seek time in microseconds. + */ + void seek(long position, long timeUs); + + /** + * Releases all kept resources. + */ + void release(); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorInput.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorInput.java new file mode 100644 index 0000000000..351df1e79e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorInput.java @@ -0,0 +1,280 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.EOFException; +import java.io.IOException; +import java.io.InputStream; + +/** + * Provides data to be consumed by an {@link Extractor}. + * + *

This interface provides two modes of accessing the underlying input. See the subheadings below + * for more info about each mode. + * + *

    + *
  • The {@code read()/peek()} and {@code skip()} methods provide {@link InputStream}-like + * byte-level access operations. + *
  • The {@code read/skip/peekFully()} and {@code advancePeekPosition()} methods assume the user + * wants to read an entire block/frame/header of known length. + *
+ * + *

{@link InputStream}-like methods

+ * + *

The {@code read()/peek()} and {@code skip()} methods provide {@link InputStream}-like + * byte-level access operations. The {@code length} parameter is a maximum, and each method returns + * the number of bytes actually processed. This may be less than {@code length} because the end of + * the input was reached, or the method was interrupted, or the operation was aborted early for + * another reason. + * + *

Block-based methods

+ * + *

The {@code read/skip/peekFully()} and {@code advancePeekPosition()} methods assume the user + * wants to read an entire block/frame/header of known length. + * + *

These methods all have a variant that takes a boolean {@code allowEndOfInput} parameter. This + * parameter is intended to be set to true when the caller believes the input might be fully + * exhausted before the call is made (i.e. they've previously read/skipped/peeked the final + * block/frame/header). It's not intended to allow a partial read (i.e. greater than 0 bytes, + * but less than {@code length}) to succeed - this will always throw an {@link EOFException} from + * these methods (a partial read is assumed to indicate a malformed block/frame/header - and + * therefore a malformed file). + * + *

The expected behaviour of the block-based methods is therefore: + * + *

    + *
  • Already at end-of-input and {@code allowEndOfInput=false}: Throw {@link EOFException}. + *
  • Already at end-of-input and {@code allowEndOfInput=true}: Return {@code false}. + *
  • Encounter end-of-input during read/skip/peek/advance: Throw {@link EOFException} + * (regardless of {@code allowEndOfInput}). + *
+ */ +public interface ExtractorInput { + + /** + * Reads up to {@code length} bytes from the input and resets the peek position. + *

+ * This method blocks until at least one byte of data can be read, the end of the input is + * detected, or an exception is thrown. + * + * @param target A target array into which data should be written. + * @param offset The offset into the target array at which to write. + * @param length The maximum number of bytes to read from the input. + * @return The number of bytes read, or {@link C#RESULT_END_OF_INPUT} if the input has ended. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread has been interrupted. + */ + int read(byte[] target, int offset, int length) throws IOException, InterruptedException; + + /** + * Like {@link #read(byte[], int, int)}, but reads the requested {@code length} in full. + * + * @param target A target array into which data should be written. + * @param offset The offset into the target array at which to write. + * @param length The number of bytes to read from the input. + * @param allowEndOfInput True if encountering the end of the input having read no data is + * allowed, and should result in {@code false} being returned. False if it should be + * considered an error, causing an {@link EOFException} to be thrown. See note in class + * Javadoc. + * @return True if the read was successful. False if {@code allowEndOfInput=true} and the end of + * the input was encountered having read no data. + * @throws EOFException If the end of input was encountered having partially satisfied the read + * (i.e. having read at least one byte, but fewer than {@code length}), or if no bytes were + * read and {@code allowEndOfInput} is false. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread has been interrupted. + */ + boolean readFully(byte[] target, int offset, int length, boolean allowEndOfInput) + throws IOException, InterruptedException; + + /** + * Equivalent to {@link #readFully(byte[], int, int, boolean) readFully(target, offset, length, + * false)}. + * + * @param target A target array into which data should be written. + * @param offset The offset into the target array at which to write. + * @param length The number of bytes to read from the input. + * @throws EOFException If the end of input was encountered. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + void readFully(byte[] target, int offset, int length) throws IOException, InterruptedException; + + /** + * Like {@link #read(byte[], int, int)}, except the data is skipped instead of read. + * + * @param length The maximum number of bytes to skip from the input. + * @return The number of bytes skipped, or {@link C#RESULT_END_OF_INPUT} if the input has ended. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread has been interrupted. + */ + int skip(int length) throws IOException, InterruptedException; + + /** + * Like {@link #readFully(byte[], int, int, boolean)}, except the data is skipped instead of read. + * + * @param length The number of bytes to skip from the input. + * @param allowEndOfInput True if encountering the end of the input having skipped no data is + * allowed, and should result in {@code false} being returned. False if it should be + * considered an error, causing an {@link EOFException} to be thrown. See note in class + * Javadoc. + * @return True if the skip was successful. False if {@code allowEndOfInput=true} and the end of + * the input was encountered having skipped no data. + * @throws EOFException If the end of input was encountered having partially satisfied the skip + * (i.e. having skipped at least one byte, but fewer than {@code length}), or if no bytes were + * skipped and {@code allowEndOfInput} is false. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread has been interrupted. + */ + boolean skipFully(int length, boolean allowEndOfInput) throws IOException, InterruptedException; + + /** + * Like {@link #readFully(byte[], int, int)}, except the data is skipped instead of read. + *

+ * Encountering the end of input is always considered an error, and will result in an + * {@link EOFException} being thrown. + * + * @param length The number of bytes to skip from the input. + * @throws EOFException If the end of input was encountered. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + void skipFully(int length) throws IOException, InterruptedException; + + /** + * Peeks up to {@code length} bytes from the peek position. The current read position is left + * unchanged. + * + *

This method blocks until at least one byte of data can be peeked, the end of the input is + * detected, or an exception is thrown. + * + *

Calling {@link #resetPeekPosition()} resets the peek position to equal the current read + * position, so the caller can peek the same data again. Reading or skipping also resets the peek + * position. + * + * @param target A target array into which data should be written. + * @param offset The offset into the target array at which to write. + * @param length The maximum number of bytes to peek from the input. + * @return The number of bytes peeked, or {@link C#RESULT_END_OF_INPUT} if the input has ended. + * @throws IOException If an error occurs peeking from the input. + * @throws InterruptedException If the thread has been interrupted. + */ + int peek(byte[] target, int offset, int length) throws IOException, InterruptedException; + + /** + * Like {@link #peek(byte[], int, int)}, but peeks the requested {@code length} in full. + * + * @param target A target array into which data should be written. + * @param offset The offset into the target array at which to write. + * @param length The number of bytes to peek from the input. + * @param allowEndOfInput True if encountering the end of the input having peeked no data is + * allowed, and should result in {@code false} being returned. False if it should be + * considered an error, causing an {@link EOFException} to be thrown. See note in class + * Javadoc. + * @return True if the peek was successful. False if {@code allowEndOfInput=true} and the end of + * the input was encountered having peeked no data. + * @throws EOFException If the end of input was encountered having partially satisfied the peek + * (i.e. having peeked at least one byte, but fewer than {@code length}), or if no bytes were + * peeked and {@code allowEndOfInput} is false. + * @throws IOException If an error occurs peeking from the input. + * @throws InterruptedException If the thread is interrupted. + */ + boolean peekFully(byte[] target, int offset, int length, boolean allowEndOfInput) + throws IOException, InterruptedException; + + /** + * Equivalent to {@link #peekFully(byte[], int, int, boolean) peekFully(target, offset, length, + * false)}. + * + * @param target A target array into which data should be written. + * @param offset The offset into the target array at which to write. + * @param length The number of bytes to peek from the input. + * @throws EOFException If the end of input was encountered. + * @throws IOException If an error occurs peeking from the input. + * @throws InterruptedException If the thread is interrupted. + */ + void peekFully(byte[] target, int offset, int length) throws IOException, InterruptedException; + + /** + * Advances the peek position by {@code length} bytes. Like {@link #peekFully(byte[], int, int, + * boolean)} except the data is skipped instead of read. + * + * @param length The number of bytes by which to advance the peek position. + * @param allowEndOfInput True if encountering the end of the input before advancing is allowed, + * and should result in {@code false} being returned. False if it should be considered an + * error, causing an {@link EOFException} to be thrown. See note in class Javadoc. + * @return True if advancing the peek position was successful. False if {@code + * allowEndOfInput=true} and the end of the input was encountered before advancing over any + * data. + * @throws EOFException If the end of input was encountered having partially advanced (i.e. having + * advanced by at least one byte, but fewer than {@code length}), or if the end of input was + * encountered before advancing and {@code allowEndOfInput} is false. + * @throws IOException If an error occurs advancing the peek position. + * @throws InterruptedException If the thread is interrupted. + */ + boolean advancePeekPosition(int length, boolean allowEndOfInput) + throws IOException, InterruptedException; + + /** + * Advances the peek position by {@code length} bytes. Like {@link #peekFully(byte[], int, int)} + * except the data is skipped instead of read. + * + * @param length The number of bytes to peek from the input. + * @throws EOFException If the end of input was encountered. + * @throws IOException If an error occurs peeking from the input. + * @throws InterruptedException If the thread is interrupted. + */ + void advancePeekPosition(int length) throws IOException, InterruptedException; + + /** + * Resets the peek position to equal the current read position. + */ + void resetPeekPosition(); + + /** + * Returns the current peek position (byte offset) in the stream. + * + * @return The peek position (byte offset) in the stream. + */ + long getPeekPosition(); + + /** + * Returns the current read position (byte offset) in the stream. + * + * @return The read position (byte offset) in the stream. + */ + long getPosition(); + + /** + * Returns the length of the source stream, or {@link C#LENGTH_UNSET} if it is unknown. + * + * @return The length of the source stream, or {@link C#LENGTH_UNSET}. + */ + long getLength(); + + /** + * Called when reading fails and the required retry position is different from the last position. + * After setting the retry position it throws the given {@link Throwable}. + * + * @param Type of {@link Throwable} to be thrown. + * @param position The required retry position. + * @param e {@link Throwable} to be thrown. + * @throws E The given {@link Throwable} object. + */ + void setRetryPosition(long position, E e) throws E; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorOutput.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorOutput.java new file mode 100644 index 0000000000..8708758265 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorOutput.java @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +/** + * Receives stream level data extracted by an {@link Extractor}. + */ +public interface ExtractorOutput { + + /** + * Called by the {@link Extractor} to get the {@link TrackOutput} for a specific track. + *

+ * The same {@link TrackOutput} is returned if multiple calls are made with the same {@code id}. + * + * @param id A track identifier. + * @param type The type of the track. Typically one of the {@link org.mozilla.thirdparty.com.google.android.exoplayer2C} + * {@code TRACK_TYPE_*} constants. + * @return The {@link TrackOutput} for the given track identifier. + */ + TrackOutput track(int id, int type); + + /** + * Called when all tracks have been identified, meaning no new {@code trackId} values will be + * passed to {@link #track(int, int)}. + */ + void endTracks(); + + /** + * Called when a {@link SeekMap} has been extracted from the stream. + * + * @param seekMap The extracted {@link SeekMap}. + */ + void seekMap(SeekMap seekMap); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorUtil.java new file mode 100644 index 0000000000..6951f7e311 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorUtil.java @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.IOException; + +/** Extractor related utility methods. */ +/* package */ final class ExtractorUtil { + + /** + * Peeks {@code length} bytes from the input peek position, or all the bytes to the end of the + * input if there was less than {@code length} bytes left. + * + *

If an exception is thrown, there is no guarantee on the peek position. + * + * @param input The stream input to peek the data from. + * @param target A target array into which data should be written. + * @param offset The offset into the target array at which to write. + * @param length The maximum number of bytes to peek from the input. + * @return The number of bytes peeked. + * @throws IOException If an error occurs peeking from the input. + * @throws InterruptedException If the thread has been interrupted. + */ + public static int peekToLength(ExtractorInput input, byte[] target, int offset, int length) + throws IOException, InterruptedException { + int totalBytesPeeked = 0; + while (totalBytesPeeked < length) { + int bytesPeeked = input.peek(target, offset + totalBytesPeeked, length - totalBytesPeeked); + if (bytesPeeked == C.RESULT_END_OF_INPUT) { + break; + } + totalBytesPeeked += bytesPeeked; + } + return totalBytesPeeked; + } + + private ExtractorUtil() {} +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorsFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorsFactory.java new file mode 100644 index 0000000000..64b803f65e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ExtractorsFactory.java @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +/** Factory for arrays of {@link Extractor} instances. */ +public interface ExtractorsFactory { + + /** Returns an array of new {@link Extractor} instances. */ + Extractor[] createExtractors(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/FlacFrameReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/FlacFrameReader.java new file mode 100644 index 0000000000..e8d2b4928b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/FlacFrameReader.java @@ -0,0 +1,336 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacConstants; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacStreamMetadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** + * Reads and peeks FLAC frame elements according to the FLAC format specification. + */ +public final class FlacFrameReader { + + /** Holds a sample number. */ + public static final class SampleNumberHolder { + /** The sample number. */ + public long sampleNumber; + } + + /** + * Checks whether the given FLAC frame header is valid and, if so, reads it and writes the frame + * first sample number in {@code sampleNumberHolder}. + * + *

If the header is valid, the position of {@code data} is moved to the byte following it. + * Otherwise, there is no guarantee on the position. + * + * @param data The array to read the data from, whose position must correspond to the frame + * header. + * @param flacStreamMetadata The stream metadata. + * @param frameStartMarker The frame start marker of the stream. + * @param sampleNumberHolder The holder used to contain the sample number. + * @return Whether the frame header is valid. + */ + public static boolean checkAndReadFrameHeader( + ParsableByteArray data, + FlacStreamMetadata flacStreamMetadata, + int frameStartMarker, + SampleNumberHolder sampleNumberHolder) { + int frameStartPosition = data.getPosition(); + + long frameHeaderBytes = data.readUnsignedInt(); + if (frameHeaderBytes >>> 16 != frameStartMarker) { + return false; + } + + boolean isBlockSizeVariable = (frameHeaderBytes >>> 16 & 1) == 1; + int blockSizeKey = (int) (frameHeaderBytes >> 12 & 0xF); + int sampleRateKey = (int) (frameHeaderBytes >> 8 & 0xF); + int channelAssignmentKey = (int) (frameHeaderBytes >> 4 & 0xF); + int bitsPerSampleKey = (int) (frameHeaderBytes >> 1 & 0x7); + boolean reservedBit = (frameHeaderBytes & 1) == 1; + return checkChannelAssignment(channelAssignmentKey, flacStreamMetadata) + && checkBitsPerSample(bitsPerSampleKey, flacStreamMetadata) + && !reservedBit + && checkAndReadFirstSampleNumber( + data, flacStreamMetadata, isBlockSizeVariable, sampleNumberHolder) + && checkAndReadBlockSizeSamples(data, flacStreamMetadata, blockSizeKey) + && checkAndReadSampleRate(data, flacStreamMetadata, sampleRateKey) + && checkAndReadCrc(data, frameStartPosition); + } + + /** + * Checks whether the given FLAC frame header is valid and, if so, writes the frame first sample + * number in {@code sampleNumberHolder}. + * + *

The {@code input} peek position is left unchanged. + * + * @param input The input to get the data from, whose peek position must correspond to the frame + * header. + * @param flacStreamMetadata The stream metadata. + * @param frameStartMarker The frame start marker of the stream. + * @param sampleNumberHolder The holder used to contain the sample number. + * @return Whether the frame header is valid. + */ + public static boolean checkFrameHeaderFromPeek( + ExtractorInput input, + FlacStreamMetadata flacStreamMetadata, + int frameStartMarker, + SampleNumberHolder sampleNumberHolder) + throws IOException, InterruptedException { + long originalPeekPosition = input.getPeekPosition(); + + byte[] frameStartBytes = new byte[2]; + input.peekFully(frameStartBytes, 0, 2); + int frameStart = (frameStartBytes[0] & 0xFF) << 8 | (frameStartBytes[1] & 0xFF); + if (frameStart != frameStartMarker) { + input.resetPeekPosition(); + input.advancePeekPosition((int) (originalPeekPosition - input.getPosition())); + return false; + } + + ParsableByteArray scratch = new ParsableByteArray(FlacConstants.MAX_FRAME_HEADER_SIZE); + System.arraycopy( + frameStartBytes, /* srcPos= */ 0, scratch.data, /* destPos= */ 0, /* length= */ 2); + + int totalBytesPeeked = + ExtractorUtil.peekToLength(input, scratch.data, 2, FlacConstants.MAX_FRAME_HEADER_SIZE - 2); + scratch.setLimit(totalBytesPeeked); + + input.resetPeekPosition(); + input.advancePeekPosition((int) (originalPeekPosition - input.getPosition())); + + return checkAndReadFrameHeader( + scratch, flacStreamMetadata, frameStartMarker, sampleNumberHolder); + } + + /** + * Returns the number of the first sample in the given frame. + * + *

The read position of {@code input} is left unchanged. + * + *

If no exception is thrown, the peek position is aligned with the read position. Otherwise, + * there is no guarantee on the peek position. + * + * @param input Input stream to get the sample number from (starting from the read position). + * @return The frame first sample number. + * @throws ParserException If an error occurs parsing the sample number. + * @throws IOException If peeking from the input fails. + * @throws InterruptedException If interrupted while peeking from input. + */ + public static long getFirstSampleNumber( + ExtractorInput input, FlacStreamMetadata flacStreamMetadata) + throws IOException, InterruptedException { + input.resetPeekPosition(); + input.advancePeekPosition(1); + byte[] blockingStrategyByte = new byte[1]; + input.peekFully(blockingStrategyByte, 0, 1); + boolean isBlockSizeVariable = (blockingStrategyByte[0] & 1) == 1; + input.advancePeekPosition(2); + + int maxUtf8SampleNumberSize = isBlockSizeVariable ? 7 : 6; + ParsableByteArray scratch = new ParsableByteArray(maxUtf8SampleNumberSize); + int totalBytesPeeked = + ExtractorUtil.peekToLength(input, scratch.data, 0, maxUtf8SampleNumberSize); + scratch.setLimit(totalBytesPeeked); + input.resetPeekPosition(); + + SampleNumberHolder sampleNumberHolder = new SampleNumberHolder(); + if (!checkAndReadFirstSampleNumber( + scratch, flacStreamMetadata, isBlockSizeVariable, sampleNumberHolder)) { + throw new ParserException(); + } + + return sampleNumberHolder.sampleNumber; + } + + /** + * Reads the given block size. + * + * @param data The array to read the data from, whose position must correspond to the block size + * bits. + * @param blockSizeKey The key in the block size lookup table. + * @return The block size in samples, or -1 if the {@code blockSizeKey} is invalid. + */ + public static int readFrameBlockSizeSamplesFromKey(ParsableByteArray data, int blockSizeKey) { + switch (blockSizeKey) { + case 1: + return 192; + case 2: + case 3: + case 4: + case 5: + return 576 << (blockSizeKey - 2); + case 6: + return data.readUnsignedByte() + 1; + case 7: + return data.readUnsignedShort() + 1; + case 8: + case 9: + case 10: + case 11: + case 12: + case 13: + case 14: + case 15: + return 256 << (blockSizeKey - 8); + default: + return -1; + } + } + + /** + * Checks whether the given channel assignment is valid. + * + * @param channelAssignmentKey The channel assignment lookup key. + * @param flacStreamMetadata The stream metadata. + * @return Whether the channel assignment is valid. + */ + private static boolean checkChannelAssignment( + int channelAssignmentKey, FlacStreamMetadata flacStreamMetadata) { + if (channelAssignmentKey <= 7) { + return channelAssignmentKey == flacStreamMetadata.channels - 1; + } else if (channelAssignmentKey <= 10) { + return flacStreamMetadata.channels == 2; + } else { + return false; + } + } + + /** + * Checks whether the given number of bits per sample is valid. + * + * @param bitsPerSampleKey The bits per sample lookup key. + * @param flacStreamMetadata The stream metadata. + * @return Whether the number of bits per sample is valid. + */ + private static boolean checkBitsPerSample( + int bitsPerSampleKey, FlacStreamMetadata flacStreamMetadata) { + if (bitsPerSampleKey == 0) { + return true; + } + return bitsPerSampleKey == flacStreamMetadata.bitsPerSampleLookupKey; + } + + /** + * Checks whether the given sample number is valid and, if so, reads it and writes it in {@code + * sampleNumberHolder}. + * + *

If the sample number is valid, the position of {@code data} is moved to the byte following + * it. Otherwise, there is no guarantee on the position. + * + * @param data The array to read the data from, whose position must correspond to the sample + * number data. + * @param flacStreamMetadata The stream metadata. + * @param isBlockSizeVariable Whether the stream blocking strategy is variable block size or fixed + * block size. + * @param sampleNumberHolder The holder used to contain the sample number. + * @return Whether the sample number is valid. + */ + private static boolean checkAndReadFirstSampleNumber( + ParsableByteArray data, + FlacStreamMetadata flacStreamMetadata, + boolean isBlockSizeVariable, + SampleNumberHolder sampleNumberHolder) { + long utf8Value; + try { + utf8Value = data.readUtf8EncodedLong(); + } catch (NumberFormatException e) { + return false; + } + + sampleNumberHolder.sampleNumber = + isBlockSizeVariable ? utf8Value : utf8Value * flacStreamMetadata.maxBlockSizeSamples; + return true; + } + + /** + * Checks whether the given frame block size key and block size bits are valid and, if so, reads + * the block size bits. + * + *

If the block size is valid, the position of {@code data} is moved to the byte following the + * block size bits. Otherwise, there is no guarantee on the position. + * + * @param data The array to read the data from, whose position must correspond to the block size + * bits. + * @param flacStreamMetadata The stream metadata. + * @param blockSizeKey The key in the block size lookup table. + * @return Whether the block size is valid. + */ + private static boolean checkAndReadBlockSizeSamples( + ParsableByteArray data, FlacStreamMetadata flacStreamMetadata, int blockSizeKey) { + int blockSizeSamples = readFrameBlockSizeSamplesFromKey(data, blockSizeKey); + return blockSizeSamples != -1 && blockSizeSamples <= flacStreamMetadata.maxBlockSizeSamples; + } + + /** + * Checks whether the given sample rate key and sample rate bits are valid and, if so, reads the + * sample rate bits. + * + *

If the sample rate is valid, the position of {@code data} is moved to the byte following the + * sample rate bits. Otherwise, there is no guarantee on the position. + * + * @param data The array to read the data from, whose position must indicate the sample rate bits. + * @param flacStreamMetadata The stream metadata. + * @param sampleRateKey The key in the sample rate lookup table. + * @return Whether the sample rate is valid. + */ + private static boolean checkAndReadSampleRate( + ParsableByteArray data, FlacStreamMetadata flacStreamMetadata, int sampleRateKey) { + int expectedSampleRate = flacStreamMetadata.sampleRate; + if (sampleRateKey == 0) { + return true; + } else if (sampleRateKey <= 11) { + return sampleRateKey == flacStreamMetadata.sampleRateLookupKey; + } else if (sampleRateKey == 12) { + return data.readUnsignedByte() * 1000 == expectedSampleRate; + } else if (sampleRateKey <= 14) { + int sampleRate = data.readUnsignedShort(); + if (sampleRateKey == 14) { + sampleRate *= 10; + } + return sampleRate == expectedSampleRate; + } else { + return false; + } + } + + /** + * Checks whether the given CRC is valid and, if so, reads it. + * + *

If the CRC is valid, the position of {@code data} is moved to the byte following it. + * Otherwise, there is no guarantee on the position. + * + *

The {@code data} array must contain the whole frame header. + * + * @param data The array to read the data from, whose position must indicate the CRC. + * @param frameStartPosition The frame start offset in {@code data}. + * @return Whether the CRC is valid. + */ + private static boolean checkAndReadCrc(ParsableByteArray data, int frameStartPosition) { + int crc = data.readUnsignedByte(); + int frameEndPosition = data.getPosition(); + int expectedCrc = + Util.crc8(data.data, frameStartPosition, frameEndPosition - 1, /* initialValue= */ 0); + return crc == expectedCrc; + } + + private FlacFrameReader() {} +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/FlacMetadataReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/FlacMetadataReader.java new file mode 100644 index 0000000000..c5413cf459 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/FlacMetadataReader.java @@ -0,0 +1,312 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.VorbisUtil.CommentHeader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.flac.PictureFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacConstants; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacStreamMetadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; +import java.nio.charset.Charset; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; + +/** + * Reads and peeks FLAC stream metadata elements according to the FLAC format specification. + */ +public final class FlacMetadataReader { + + /** Holds a {@link FlacStreamMetadata}. */ + public static final class FlacStreamMetadataHolder { + /** The FLAC stream metadata. */ + @Nullable public FlacStreamMetadata flacStreamMetadata; + + public FlacStreamMetadataHolder(@Nullable FlacStreamMetadata flacStreamMetadata) { + this.flacStreamMetadata = flacStreamMetadata; + } + } + + private static final int STREAM_MARKER = 0x664C6143; // ASCII for "fLaC" + private static final int SYNC_CODE = 0x3FFE; + private static final int SEEK_POINT_SIZE = 18; + + /** + * Peeks ID3 Data. + * + * @param input Input stream to peek the ID3 data from. + * @param parseData Whether to parse the ID3 frames. + * @return The parsed ID3 data, or {@code null} if there is no such data or if {@code parseData} + * is {@code false}. + * @throws IOException If peeking from the input fails. In this case, there is no guarantee on the + * peek position. + * @throws InterruptedException If interrupted while peeking from input. In this case, there is no + * guarantee on the peek position. + */ + @Nullable + public static Metadata peekId3Metadata(ExtractorInput input, boolean parseData) + throws IOException, InterruptedException { + @Nullable + Id3Decoder.FramePredicate id3FramePredicate = parseData ? null : Id3Decoder.NO_FRAMES_PREDICATE; + @Nullable Metadata id3Metadata = new Id3Peeker().peekId3Data(input, id3FramePredicate); + return id3Metadata == null || id3Metadata.length() == 0 ? null : id3Metadata; + } + + /** + * Peeks the FLAC stream marker. + * + * @param input Input stream to peek the stream marker from. + * @return Whether the data peeked is the FLAC stream marker. + * @throws IOException If peeking from the input fails. In this case, the peek position is left + * unchanged. + * @throws InterruptedException If interrupted while peeking from input. In this case, the peek + * position is left unchanged. + */ + public static boolean checkAndPeekStreamMarker(ExtractorInput input) + throws IOException, InterruptedException { + ParsableByteArray scratch = new ParsableByteArray(FlacConstants.STREAM_MARKER_SIZE); + input.peekFully(scratch.data, 0, FlacConstants.STREAM_MARKER_SIZE); + return scratch.readUnsignedInt() == STREAM_MARKER; + } + + /** + * Reads ID3 Data. + * + *

If no exception is thrown, the peek position of {@code input} is aligned with the read + * position. + * + * @param input Input stream to read the ID3 data from. + * @param parseData Whether to parse the ID3 frames. + * @return The parsed ID3 data, or {@code null} if there is no such data or if {@code parseData} + * is {@code false}. + * @throws IOException If reading from the input fails. In this case, the read position is left + * unchanged and there is no guarantee on the peek position. + * @throws InterruptedException If interrupted while reading from input. In this case, the read + * position is left unchanged and there is no guarantee on the peek position. + */ + @Nullable + public static Metadata readId3Metadata(ExtractorInput input, boolean parseData) + throws IOException, InterruptedException { + input.resetPeekPosition(); + long startingPeekPosition = input.getPeekPosition(); + @Nullable Metadata id3Metadata = peekId3Metadata(input, parseData); + int peekedId3Bytes = (int) (input.getPeekPosition() - startingPeekPosition); + input.skipFully(peekedId3Bytes); + return id3Metadata; + } + + /** + * Reads the FLAC stream marker. + * + * @param input Input stream to read the stream marker from. + * @throws ParserException If an error occurs parsing the stream marker. In this case, the + * position of {@code input} is advanced by {@link FlacConstants#STREAM_MARKER_SIZE} bytes. + * @throws IOException If reading from the input fails. In this case, the position is left + * unchanged. + * @throws InterruptedException If interrupted while reading from input. In this case, the + * position is left unchanged. + */ + public static void readStreamMarker(ExtractorInput input) + throws IOException, InterruptedException { + ParsableByteArray scratch = new ParsableByteArray(FlacConstants.STREAM_MARKER_SIZE); + input.readFully(scratch.data, 0, FlacConstants.STREAM_MARKER_SIZE); + if (scratch.readUnsignedInt() != STREAM_MARKER) { + throw new ParserException("Failed to read FLAC stream marker."); + } + } + + /** + * Reads one FLAC metadata block. + * + *

If no exception is thrown, the peek position of {@code input} is aligned with the read + * position. + * + * @param input Input stream to read the metadata block from (header included). + * @param metadataHolder A holder for the metadata read. If the stream info block (which must be + * the first metadata block) is read, the holder contains a new instance representing the + * stream info data. If the block read is a Vorbis comment block or a picture block, the + * holder contains a copy of the existing stream metadata with the corresponding metadata + * added. Otherwise, the metadata in the holder is unchanged. + * @return Whether the block read is the last metadata block. + * @throws IllegalArgumentException If the block read is not a stream info block and the metadata + * in {@code metadataHolder} is {@code null}. In this case, the read position will be at the + * start of a metadata block and there is no guarantee on the peek position. + * @throws IOException If reading from the input fails. In this case, the read position will be at + * the start of a metadata block and there is no guarantee on the peek position. + * @throws InterruptedException If interrupted while reading from input. In this case, the read + * position will be at the start of a metadata block and there is no guarantee on the peek + * position. + */ + public static boolean readMetadataBlock( + ExtractorInput input, FlacStreamMetadataHolder metadataHolder) + throws IOException, InterruptedException { + input.resetPeekPosition(); + ParsableBitArray scratch = new ParsableBitArray(new byte[4]); + input.peekFully(scratch.data, 0, FlacConstants.METADATA_BLOCK_HEADER_SIZE); + + boolean isLastMetadataBlock = scratch.readBit(); + int type = scratch.readBits(7); + int length = FlacConstants.METADATA_BLOCK_HEADER_SIZE + scratch.readBits(24); + if (type == FlacConstants.METADATA_TYPE_STREAM_INFO) { + metadataHolder.flacStreamMetadata = readStreamInfoBlock(input); + } else { + FlacStreamMetadata flacStreamMetadata = metadataHolder.flacStreamMetadata; + if (flacStreamMetadata == null) { + throw new IllegalArgumentException(); + } + if (type == FlacConstants.METADATA_TYPE_SEEK_TABLE) { + FlacStreamMetadata.SeekTable seekTable = readSeekTableMetadataBlock(input, length); + metadataHolder.flacStreamMetadata = flacStreamMetadata.copyWithSeekTable(seekTable); + } else if (type == FlacConstants.METADATA_TYPE_VORBIS_COMMENT) { + List vorbisComments = readVorbisCommentMetadataBlock(input, length); + metadataHolder.flacStreamMetadata = + flacStreamMetadata.copyWithVorbisComments(vorbisComments); + } else if (type == FlacConstants.METADATA_TYPE_PICTURE) { + PictureFrame pictureFrame = readPictureMetadataBlock(input, length); + metadataHolder.flacStreamMetadata = + flacStreamMetadata.copyWithPictureFrames(Collections.singletonList(pictureFrame)); + } else { + input.skipFully(length); + } + } + + return isLastMetadataBlock; + } + + /** + * Reads a FLAC seek table metadata block. + * + *

The position of {@code data} is moved to the byte following the seek table metadata block + * (placeholder points included). + * + * @param data The array to read the data from, whose position must correspond to the seek table + * metadata block (header included). + * @return The seek table, without the placeholder points. + */ + public static FlacStreamMetadata.SeekTable readSeekTableMetadataBlock(ParsableByteArray data) { + data.skipBytes(1); + int length = data.readUnsignedInt24(); + + long seekTableEndPosition = data.getPosition() + length; + int seekPointCount = length / SEEK_POINT_SIZE; + long[] pointSampleNumbers = new long[seekPointCount]; + long[] pointOffsets = new long[seekPointCount]; + for (int i = 0; i < seekPointCount; i++) { + // The sample number is expected to fit in a signed long, except if it is a placeholder, in + // which case its value is -1. + long sampleNumber = data.readLong(); + if (sampleNumber == -1) { + pointSampleNumbers = Arrays.copyOf(pointSampleNumbers, i); + pointOffsets = Arrays.copyOf(pointOffsets, i); + break; + } + pointSampleNumbers[i] = sampleNumber; + pointOffsets[i] = data.readLong(); + data.skipBytes(2); + } + + data.skipBytes((int) (seekTableEndPosition - data.getPosition())); + return new FlacStreamMetadata.SeekTable(pointSampleNumbers, pointOffsets); + } + + /** + * Returns the frame start marker, consisting of the 2 first bytes of the first frame. + * + *

The read position of {@code input} is left unchanged and the peek position is aligned with + * the read position. + * + * @param input Input stream to get the start marker from (starting from the read position). + * @return The frame start marker (which must be the same for all the frames in the stream). + * @throws ParserException If an error occurs parsing the frame start marker. + * @throws IOException If peeking from the input fails. + * @throws InterruptedException If interrupted while peeking from input. + */ + public static int getFrameStartMarker(ExtractorInput input) + throws IOException, InterruptedException { + input.resetPeekPosition(); + ParsableByteArray scratch = new ParsableByteArray(2); + input.peekFully(scratch.data, 0, 2); + + int frameStartMarker = scratch.readUnsignedShort(); + int syncCode = frameStartMarker >> 2; + if (syncCode != SYNC_CODE) { + input.resetPeekPosition(); + throw new ParserException("First frame does not start with sync code."); + } + + input.resetPeekPosition(); + return frameStartMarker; + } + + private static FlacStreamMetadata readStreamInfoBlock(ExtractorInput input) + throws IOException, InterruptedException { + byte[] scratchData = new byte[FlacConstants.STREAM_INFO_BLOCK_SIZE]; + input.readFully(scratchData, 0, FlacConstants.STREAM_INFO_BLOCK_SIZE); + return new FlacStreamMetadata( + scratchData, /* offset= */ FlacConstants.METADATA_BLOCK_HEADER_SIZE); + } + + private static FlacStreamMetadata.SeekTable readSeekTableMetadataBlock( + ExtractorInput input, int length) throws IOException, InterruptedException { + ParsableByteArray scratch = new ParsableByteArray(length); + input.readFully(scratch.data, 0, length); + return readSeekTableMetadataBlock(scratch); + } + + private static List readVorbisCommentMetadataBlock(ExtractorInput input, int length) + throws IOException, InterruptedException { + ParsableByteArray scratch = new ParsableByteArray(length); + input.readFully(scratch.data, 0, length); + scratch.skipBytes(FlacConstants.METADATA_BLOCK_HEADER_SIZE); + CommentHeader commentHeader = + VorbisUtil.readVorbisCommentHeader( + scratch, /* hasMetadataHeader= */ false, /* hasFramingBit= */ false); + return Arrays.asList(commentHeader.comments); + } + + private static PictureFrame readPictureMetadataBlock(ExtractorInput input, int length) + throws IOException, InterruptedException { + ParsableByteArray scratch = new ParsableByteArray(length); + input.readFully(scratch.data, 0, length); + scratch.skipBytes(FlacConstants.METADATA_BLOCK_HEADER_SIZE); + + int pictureType = scratch.readInt(); + int mimeTypeLength = scratch.readInt(); + String mimeType = scratch.readString(mimeTypeLength, Charset.forName(C.ASCII_NAME)); + int descriptionLength = scratch.readInt(); + String description = scratch.readString(descriptionLength); + int width = scratch.readInt(); + int height = scratch.readInt(); + int depth = scratch.readInt(); + int colors = scratch.readInt(); + int pictureDataLength = scratch.readInt(); + byte[] pictureData = new byte[pictureDataLength]; + scratch.readBytes(pictureData, 0, pictureDataLength); + + return new PictureFrame( + pictureType, mimeType, description, width, height, depth, colors, pictureData); + } + + private FlacMetadataReader() {} +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/FlacSeekTableSeekMap.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/FlacSeekTableSeekMap.java new file mode 100644 index 0000000000..56d54596ac --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/FlacSeekTableSeekMap.java @@ -0,0 +1,84 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacStreamMetadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * A {@link SeekMap} implementation for FLAC streams that contain a seek table. + */ +public final class FlacSeekTableSeekMap implements SeekMap { + + private final FlacStreamMetadata flacStreamMetadata; + private final long firstFrameOffset; + + /** + * Creates a seek map from the FLAC stream seek table. + * + * @param flacStreamMetadata The stream metadata. + * @param firstFrameOffset The byte offset of the first frame in the stream. + */ + public FlacSeekTableSeekMap(FlacStreamMetadata flacStreamMetadata, long firstFrameOffset) { + this.flacStreamMetadata = flacStreamMetadata; + this.firstFrameOffset = firstFrameOffset; + } + + @Override + public boolean isSeekable() { + return true; + } + + @Override + public long getDurationUs() { + return flacStreamMetadata.getDurationUs(); + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + Assertions.checkNotNull(flacStreamMetadata.seekTable); + long[] pointSampleNumbers = flacStreamMetadata.seekTable.pointSampleNumbers; + long[] pointOffsets = flacStreamMetadata.seekTable.pointOffsets; + + long targetSampleNumber = flacStreamMetadata.getSampleNumber(timeUs); + int index = + Util.binarySearchFloor( + pointSampleNumbers, + targetSampleNumber, + /* inclusive= */ true, + /* stayInBounds= */ false); + + long seekPointSampleNumber = index == -1 ? 0 : pointSampleNumbers[index]; + long seekPointOffsetFromFirstFrame = index == -1 ? 0 : pointOffsets[index]; + SeekPoint seekPoint = getSeekPoint(seekPointSampleNumber, seekPointOffsetFromFirstFrame); + if (seekPoint.timeUs == timeUs || index == pointSampleNumbers.length - 1) { + return new SeekPoints(seekPoint); + } else { + SeekPoint secondSeekPoint = + getSeekPoint(pointSampleNumbers[index + 1], pointOffsets[index + 1]); + return new SeekPoints(seekPoint, secondSeekPoint); + } + } + + private SeekPoint getSeekPoint(long sampleNumber, long offsetFromFirstFrame) { + long seekTimeUs = sampleNumber * C.MICROS_PER_SECOND / flacStreamMetadata.sampleRate; + long seekPosition = firstFrameOffset + offsetFromFirstFrame; + return new SeekPoint(seekTimeUs, seekPosition); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/GaplessInfoHolder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/GaplessInfoHolder.java new file mode 100644 index 0000000000..11893d6136 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/GaplessInfoHolder.java @@ -0,0 +1,131 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.CommentFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.InternalFrame; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** + * Holder for gapless playback information. + */ +public final class GaplessInfoHolder { + + private static final String GAPLESS_DOMAIN = "com.apple.iTunes"; + private static final String GAPLESS_DESCRIPTION = "iTunSMPB"; + private static final Pattern GAPLESS_COMMENT_PATTERN = + Pattern.compile("^ [0-9a-fA-F]{8} ([0-9a-fA-F]{8}) ([0-9a-fA-F]{8})"); + + /** + * The number of samples to trim from the start of the decoded audio stream, or + * {@link Format#NO_VALUE} if not set. + */ + public int encoderDelay; + + /** + * The number of samples to trim from the end of the decoded audio stream, or + * {@link Format#NO_VALUE} if not set. + */ + public int encoderPadding; + + /** + * Creates a new holder for gapless playback information. + */ + public GaplessInfoHolder() { + encoderDelay = Format.NO_VALUE; + encoderPadding = Format.NO_VALUE; + } + + /** + * Populates the holder with data from an MP3 Xing header, if valid and non-zero. + * + * @param value The 24-bit value to decode. + * @return Whether the holder was populated. + */ + public boolean setFromXingHeaderValue(int value) { + int encoderDelay = value >> 12; + int encoderPadding = value & 0x0FFF; + if (encoderDelay > 0 || encoderPadding > 0) { + this.encoderDelay = encoderDelay; + this.encoderPadding = encoderPadding; + return true; + } + return false; + } + + /** + * Populates the holder with data parsed from ID3 {@link Metadata}. + * + * @param metadata The metadata from which to parse the gapless information. + * @return Whether the holder was populated. + */ + public boolean setFromMetadata(Metadata metadata) { + for (int i = 0; i < metadata.length(); i++) { + Metadata.Entry entry = metadata.get(i); + if (entry instanceof CommentFrame) { + CommentFrame commentFrame = (CommentFrame) entry; + if (GAPLESS_DESCRIPTION.equals(commentFrame.description) + && setFromComment(commentFrame.text)) { + return true; + } + } else if (entry instanceof InternalFrame) { + InternalFrame internalFrame = (InternalFrame) entry; + if (GAPLESS_DOMAIN.equals(internalFrame.domain) + && GAPLESS_DESCRIPTION.equals(internalFrame.description) + && setFromComment(internalFrame.text)) { + return true; + } + } + } + return false; + } + + /** + * Populates the holder with data parsed from a gapless playback comment (stored in an ID3 header + * or MPEG 4 user data), if valid and non-zero. + * + * @param data The comment's payload data. + * @return Whether the holder was populated. + */ + private boolean setFromComment(String data) { + Matcher matcher = GAPLESS_COMMENT_PATTERN.matcher(data); + if (matcher.find()) { + try { + int encoderDelay = Integer.parseInt(matcher.group(1), 16); + int encoderPadding = Integer.parseInt(matcher.group(2), 16); + if (encoderDelay > 0 || encoderPadding > 0) { + this.encoderDelay = encoderDelay; + this.encoderPadding = encoderPadding; + return true; + } + } catch (NumberFormatException e) { + // Ignore incorrectly formatted comments. + } + } + return false; + } + + /** + * Returns whether {@link #encoderDelay} and {@link #encoderPadding} have been set. + */ + public boolean hasGaplessInfo() { + return encoderDelay != Format.NO_VALUE && encoderPadding != Format.NO_VALUE; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/Id3Peeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/Id3Peeker.java new file mode 100644 index 0000000000..a0a26c76d8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/Id3Peeker.java @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.EOFException; +import java.io.IOException; + +/** + * Peeks data from the beginning of an {@link ExtractorInput} to determine if there is any ID3 tag. + */ +public final class Id3Peeker { + + private final ParsableByteArray scratch; + + public Id3Peeker() { + scratch = new ParsableByteArray(Id3Decoder.ID3_HEADER_LENGTH); + } + + /** + * Peeks ID3 data from the input and parses the first ID3 tag. + * + * @param input The {@link ExtractorInput} from which data should be peeked. + * @param id3FramePredicate Determines which ID3 frames are decoded. May be null to decode all + * frames. + * @return The first ID3 tag decoded into a {@link Metadata} object. May be null if ID3 tag is not + * present in the input. + * @throws IOException If an error occurred peeking from the input. + * @throws InterruptedException If the thread was interrupted. + */ + @Nullable + public Metadata peekId3Data( + ExtractorInput input, @Nullable Id3Decoder.FramePredicate id3FramePredicate) + throws IOException, InterruptedException { + int peekedId3Bytes = 0; + Metadata metadata = null; + while (true) { + try { + input.peekFully(scratch.data, /* offset= */ 0, Id3Decoder.ID3_HEADER_LENGTH); + } catch (EOFException e) { + // If input has less than ID3_HEADER_LENGTH, ignore the rest. + break; + } + scratch.setPosition(0); + if (scratch.readUnsignedInt24() != Id3Decoder.ID3_TAG) { + // Not an ID3 tag. + break; + } + scratch.skipBytes(3); // Skip major version, minor version and flags. + int framesLength = scratch.readSynchSafeInt(); + int tagLength = Id3Decoder.ID3_HEADER_LENGTH + framesLength; + + if (metadata == null) { + byte[] id3Data = new byte[tagLength]; + System.arraycopy(scratch.data, 0, id3Data, 0, Id3Decoder.ID3_HEADER_LENGTH); + input.peekFully(id3Data, Id3Decoder.ID3_HEADER_LENGTH, framesLength); + + metadata = new Id3Decoder(id3FramePredicate).decode(id3Data, tagLength); + } else { + input.advancePeekPosition(framesLength); + } + + peekedId3Bytes += tagLength; + } + + input.resetPeekPosition(); + input.advancePeekPosition(peekedId3Bytes); + return metadata; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/MpegAudioHeader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/MpegAudioHeader.java new file mode 100644 index 0000000000..66c3411094 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/MpegAudioHeader.java @@ -0,0 +1,275 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; + +/** + * An MPEG audio frame header. + */ +public final class MpegAudioHeader { + + /** + * Theoretical maximum frame size for an MPEG audio stream, which occurs when playing a Layer 2 + * MPEG 2.5 audio stream at 16 kb/s (with padding). The size is 1152 sample/frame * + * 160000 bit/s / (8000 sample/s * 8 bit/byte) + 1 padding byte/frame = 2881 byte/frame. + * The next power of two size is 4 KiB. + */ + public static final int MAX_FRAME_SIZE_BYTES = 4096; + + private static final String[] MIME_TYPE_BY_LAYER = + new String[] {MimeTypes.AUDIO_MPEG_L1, MimeTypes.AUDIO_MPEG_L2, MimeTypes.AUDIO_MPEG}; + private static final int[] SAMPLING_RATE_V1 = {44100, 48000, 32000}; + private static final int[] BITRATE_V1_L1 = { + 32000, 64000, 96000, 128000, 160000, 192000, 224000, 256000, 288000, 320000, 352000, 384000, + 416000, 448000 + }; + private static final int[] BITRATE_V2_L1 = { + 32000, 48000, 56000, 64000, 80000, 96000, 112000, 128000, 144000, 160000, 176000, 192000, + 224000, 256000 + }; + private static final int[] BITRATE_V1_L2 = { + 32000, 48000, 56000, 64000, 80000, 96000, 112000, 128000, 160000, 192000, 224000, 256000, + 320000, 384000 + }; + private static final int[] BITRATE_V1_L3 = { + 32000, 40000, 48000, 56000, 64000, 80000, 96000, 112000, 128000, 160000, 192000, 224000, 256000, + 320000 + }; + private static final int[] BITRATE_V2 = { + 8000, 16000, 24000, 32000, 40000, 48000, 56000, 64000, 80000, 96000, 112000, 128000, 144000, + 160000 + }; + + private static final int SAMPLES_PER_FRAME_L1 = 384; + private static final int SAMPLES_PER_FRAME_L2 = 1152; + private static final int SAMPLES_PER_FRAME_L3_V1 = 1152; + private static final int SAMPLES_PER_FRAME_L3_V2 = 576; + + /** + * Returns the size of the frame associated with {@code header}, or {@link C#LENGTH_UNSET} if it + * is invalid. + */ + public static int getFrameSize(int header) { + if (!isMagicPresent(header)) { + return C.LENGTH_UNSET; + } + + int version = (header >>> 19) & 3; + if (version == 1) { + return C.LENGTH_UNSET; + } + + int layer = (header >>> 17) & 3; + if (layer == 0) { + return C.LENGTH_UNSET; + } + + int bitrateIndex = (header >>> 12) & 15; + if (bitrateIndex == 0 || bitrateIndex == 0xF) { + // Disallow "free" bitrate. + return C.LENGTH_UNSET; + } + + int samplingRateIndex = (header >>> 10) & 3; + if (samplingRateIndex == 3) { + return C.LENGTH_UNSET; + } + + int samplingRate = SAMPLING_RATE_V1[samplingRateIndex]; + if (version == 2) { + // Version 2 + samplingRate /= 2; + } else if (version == 0) { + // Version 2.5 + samplingRate /= 4; + } + + int bitrate; + int padding = (header >>> 9) & 1; + if (layer == 3) { + // Layer I (layer == 3) + bitrate = version == 3 ? BITRATE_V1_L1[bitrateIndex - 1] : BITRATE_V2_L1[bitrateIndex - 1]; + return (12 * bitrate / samplingRate + padding) * 4; + } else { + // Layer II (layer == 2) or III (layer == 1) + if (version == 3) { + bitrate = layer == 2 ? BITRATE_V1_L2[bitrateIndex - 1] : BITRATE_V1_L3[bitrateIndex - 1]; + } else { + // Version 2 or 2.5. + bitrate = BITRATE_V2[bitrateIndex - 1]; + } + } + + if (version == 3) { + // Version 1 + return 144 * bitrate / samplingRate + padding; + } else { + // Version 2 or 2.5 + return (layer == 1 ? 72 : 144) * bitrate / samplingRate + padding; + } + } + + /** + * Returns the number of samples per frame associated with {@code header}, or {@link + * C#LENGTH_UNSET} if it is invalid. + */ + public static int getFrameSampleCount(int header) { + + if (!isMagicPresent(header)) { + return C.LENGTH_UNSET; + } + + int version = (header >>> 19) & 3; + if (version == 1) { + return C.LENGTH_UNSET; + } + + int layer = (header >>> 17) & 3; + if (layer == 0) { + return C.LENGTH_UNSET; + } + + // Those header values are not used but are checked for consistency with the other methods + int bitrateIndex = (header >>> 12) & 15; + int samplingRateIndex = (header >>> 10) & 3; + if (bitrateIndex == 0 || bitrateIndex == 0xF || samplingRateIndex == 3) { + return C.LENGTH_UNSET; + } + + return getFrameSizeInSamples(version, layer); + } + + /** + * Parses {@code headerData}, populating {@code header} with the parsed data. + * + * @param headerData Header data to parse. + * @param header Header to populate with data from {@code headerData}. + * @return True if the header was populated. False otherwise, indicating that {@code headerData} + * is not a valid MPEG audio header. + */ + public static boolean populateHeader(int headerData, MpegAudioHeader header) { + if (!isMagicPresent(headerData)) { + return false; + } + + int version = (headerData >>> 19) & 3; + if (version == 1) { + return false; + } + + int layer = (headerData >>> 17) & 3; + if (layer == 0) { + return false; + } + + int bitrateIndex = (headerData >>> 12) & 15; + if (bitrateIndex == 0 || bitrateIndex == 0xF) { + // Disallow "free" bitrate. + return false; + } + + int samplingRateIndex = (headerData >>> 10) & 3; + if (samplingRateIndex == 3) { + return false; + } + + int sampleRate = SAMPLING_RATE_V1[samplingRateIndex]; + if (version == 2) { + // Version 2 + sampleRate /= 2; + } else if (version == 0) { + // Version 2.5 + sampleRate /= 4; + } + + int padding = (headerData >>> 9) & 1; + int bitrate; + int frameSize; + int samplesPerFrame = getFrameSizeInSamples(version, layer); + if (layer == 3) { + // Layer I (layer == 3) + bitrate = version == 3 ? BITRATE_V1_L1[bitrateIndex - 1] : BITRATE_V2_L1[bitrateIndex - 1]; + frameSize = (12 * bitrate / sampleRate + padding) * 4; + } else { + // Layer II (layer == 2) or III (layer == 1) + if (version == 3) { + // Version 1 + bitrate = layer == 2 ? BITRATE_V1_L2[bitrateIndex - 1] : BITRATE_V1_L3[bitrateIndex - 1]; + frameSize = 144 * bitrate / sampleRate + padding; + } else { + // Version 2 or 2.5. + bitrate = BITRATE_V2[bitrateIndex - 1]; + frameSize = (layer == 1 ? 72 : 144) * bitrate / sampleRate + padding; + } + } + + String mimeType = MIME_TYPE_BY_LAYER[3 - layer]; + int channels = ((headerData >> 6) & 3) == 3 ? 1 : 2; + header.setValues(version, mimeType, frameSize, sampleRate, channels, bitrate, samplesPerFrame); + return true; + } + + private static boolean isMagicPresent(int header) { + return (header & 0xFFE00000) == 0xFFE00000; + } + + private static int getFrameSizeInSamples(int version, int layer) { + switch (layer) { + case 1: + return version == 3 ? SAMPLES_PER_FRAME_L3_V1 : SAMPLES_PER_FRAME_L3_V2; // Layer III + case 2: + return SAMPLES_PER_FRAME_L2; // Layer II + case 3: + return SAMPLES_PER_FRAME_L1; // Layer I + } + throw new IllegalArgumentException(); + } + + /** MPEG audio header version. */ + public int version; + /** The mime type. */ + @Nullable public String mimeType; + /** Size of the frame associated with this header, in bytes. */ + public int frameSize; + /** Sample rate in samples per second. */ + public int sampleRate; + /** Number of audio channels in the frame. */ + public int channels; + /** Bitrate of the frame in bit/s. */ + public int bitrate; + /** Number of samples stored in the frame. */ + public int samplesPerFrame; + + private void setValues( + int version, + String mimeType, + int frameSize, + int sampleRate, + int channels, + int bitrate, + int samplesPerFrame) { + this.version = version; + this.mimeType = mimeType; + this.frameSize = frameSize; + this.sampleRate = sampleRate; + this.channels = channels; + this.bitrate = bitrate; + this.samplesPerFrame = samplesPerFrame; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/PositionHolder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/PositionHolder.java new file mode 100644 index 0000000000..feae7f0bc7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/PositionHolder.java @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +/** + * Holds a position in the stream. + */ +public final class PositionHolder { + + /** + * The held position. + */ + public long position; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/SeekMap.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/SeekMap.java new file mode 100644 index 0000000000..b3ccad214d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/SeekMap.java @@ -0,0 +1,141 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * Maps seek positions (in microseconds) to corresponding positions (byte offsets) in the stream. + */ +public interface SeekMap { + + /** A {@link SeekMap} that does not support seeking. */ + class Unseekable implements SeekMap { + + private final long durationUs; + private final SeekPoints startSeekPoints; + + /** + * @param durationUs The duration of the stream in microseconds, or {@link C#TIME_UNSET} if the + * duration is unknown. + */ + public Unseekable(long durationUs) { + this(durationUs, 0); + } + + /** + * @param durationUs The duration of the stream in microseconds, or {@link C#TIME_UNSET} if the + * duration is unknown. + * @param startPosition The position (byte offset) of the start of the media. + */ + public Unseekable(long durationUs, long startPosition) { + this.durationUs = durationUs; + startSeekPoints = + new SeekPoints(startPosition == 0 ? SeekPoint.START : new SeekPoint(0, startPosition)); + } + + @Override + public boolean isSeekable() { + return false; + } + + @Override + public long getDurationUs() { + return durationUs; + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + return startSeekPoints; + } + } + + /** Contains one or two {@link SeekPoint}s. */ + final class SeekPoints { + + /** The first seek point. */ + public final SeekPoint first; + /** The second seek point, or {@link #first} if there's only one seek point. */ + public final SeekPoint second; + + /** @param point The single seek point. */ + public SeekPoints(SeekPoint point) { + this(point, point); + } + + /** + * @param first The first seek point. + * @param second The second seek point. + */ + public SeekPoints(SeekPoint first, SeekPoint second) { + this.first = Assertions.checkNotNull(first); + this.second = Assertions.checkNotNull(second); + } + + @Override + public String toString() { + return "[" + first + (first.equals(second) ? "" : (", " + second)) + "]"; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + SeekPoints other = (SeekPoints) obj; + return first.equals(other.first) && second.equals(other.second); + } + + @Override + public int hashCode() { + return (31 * first.hashCode()) + second.hashCode(); + } + } + + /** + * Returns whether seeking is supported. + * + * @return Whether seeking is supported. + */ + boolean isSeekable(); + + /** + * Returns the duration of the stream in microseconds. + * + * @return The duration of the stream in microseconds, or {@link C#TIME_UNSET} if the duration is + * unknown. + */ + long getDurationUs(); + + /** + * Obtains seek points for the specified seek time in microseconds. The returned {@link + * SeekPoints} will contain one or two distinct seek points. + * + *

Two seek points [A, B] are returned in the case that seeking can only be performed to + * discrete points in time, there does not exist a seek point at exactly the requested time, and + * there exist seek points on both sides of it. In this case A and B are the closest seek points + * before and after the requested time. A single seek point is returned in all other cases. + * + * @param timeUs A seek time in microseconds. + * @return The corresponding seek points. + */ + SeekPoints getSeekPoints(long timeUs); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/SeekPoint.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/SeekPoint.java new file mode 100644 index 0000000000..1c4db35203 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/SeekPoint.java @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import androidx.annotation.Nullable; + +/** Defines a seek point in a media stream. */ +public final class SeekPoint { + + /** A {@link SeekPoint} whose time and byte offset are both set to 0. */ + public static final SeekPoint START = new SeekPoint(0, 0); + + /** The time of the seek point, in microseconds. */ + public final long timeUs; + + /** The byte offset of the seek point. */ + public final long position; + + /** + * @param timeUs The time of the seek point, in microseconds. + * @param position The byte offset of the seek point. + */ + public SeekPoint(long timeUs, long position) { + this.timeUs = timeUs; + this.position = position; + } + + @Override + public String toString() { + return "[timeUs=" + timeUs + ", position=" + position + "]"; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + SeekPoint other = (SeekPoint) obj; + return timeUs == other.timeUs && position == other.position; + } + + @Override + public int hashCode() { + int result = (int) timeUs; + result = 31 * result + (int) position; + return result; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/TrackOutput.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/TrackOutput.java new file mode 100644 index 0000000000..fd33bd6027 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/TrackOutput.java @@ -0,0 +1,147 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.EOFException; +import java.io.IOException; +import java.util.Arrays; + +/** + * Receives track level data extracted by an {@link Extractor}. + */ +public interface TrackOutput { + + /** + * Holds data required to decrypt a sample. + */ + final class CryptoData { + + /** + * The encryption mode used for the sample. + */ + @C.CryptoMode public final int cryptoMode; + + /** + * The encryption key associated with the sample. Its contents must not be modified. + */ + public final byte[] encryptionKey; + + /** + * The number of encrypted blocks in the encryption pattern, 0 if pattern encryption does not + * apply. + */ + public final int encryptedBlocks; + + /** + * The number of clear blocks in the encryption pattern, 0 if pattern encryption does not + * apply. + */ + public final int clearBlocks; + + /** + * @param cryptoMode See {@link #cryptoMode}. + * @param encryptionKey See {@link #encryptionKey}. + * @param encryptedBlocks See {@link #encryptedBlocks}. + * @param clearBlocks See {@link #clearBlocks}. + */ + public CryptoData(@C.CryptoMode int cryptoMode, byte[] encryptionKey, int encryptedBlocks, + int clearBlocks) { + this.cryptoMode = cryptoMode; + this.encryptionKey = encryptionKey; + this.encryptedBlocks = encryptedBlocks; + this.clearBlocks = clearBlocks; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + CryptoData other = (CryptoData) obj; + return cryptoMode == other.cryptoMode && encryptedBlocks == other.encryptedBlocks + && clearBlocks == other.clearBlocks && Arrays.equals(encryptionKey, other.encryptionKey); + } + + @Override + public int hashCode() { + int result = cryptoMode; + result = 31 * result + Arrays.hashCode(encryptionKey); + result = 31 * result + encryptedBlocks; + result = 31 * result + clearBlocks; + return result; + } + + } + + /** + * Called when the {@link Format} of the track has been extracted from the stream. + * + * @param format The extracted {@link Format}. + */ + void format(Format format); + + /** + * Called to write sample data to the output. + * + * @param input An {@link ExtractorInput} from which to read the sample data. + * @param length The maximum length to read from the input. + * @param allowEndOfInput True if encountering the end of the input having read no data is + * allowed, and should result in {@link C#RESULT_END_OF_INPUT} being returned. False if it + * should be considered an error, causing an {@link EOFException} to be thrown. + * @return The number of bytes appended. + * @throws IOException If an error occurred reading from the input. + * @throws InterruptedException If the thread was interrupted. + */ + int sampleData(ExtractorInput input, int length, boolean allowEndOfInput) + throws IOException, InterruptedException; + + /** + * Called to write sample data to the output. + * + * @param data A {@link ParsableByteArray} from which to read the sample data. + * @param length The number of bytes to read, starting from {@code data.getPosition()}. + */ + void sampleData(ParsableByteArray data, int length); + + /** + * Called when metadata associated with a sample has been extracted from the stream. + * + *

The corresponding sample data will have already been passed to the output via calls to + * {@link #sampleData(ExtractorInput, int, boolean)} or {@link #sampleData(ParsableByteArray, + * int)}. + * + * @param timeUs The media timestamp associated with the sample, in microseconds. + * @param flags Flags associated with the sample. See {@code C.BUFFER_FLAG_*}. + * @param size The size of the sample data, in bytes. + * @param offset The number of bytes that have been passed to {@link #sampleData(ExtractorInput, + * int, boolean)} or {@link #sampleData(ParsableByteArray, int)} since the last byte belonging + * to the sample whose metadata is being passed. + * @param encryptionData The encryption data required to decrypt the sample. May be null. + */ + void sampleMetadata( + long timeUs, + @C.BufferFlags int flags, + int size, + int offset, + @Nullable CryptoData encryptionData); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/VorbisBitArray.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/VorbisBitArray.java new file mode 100644 index 0000000000..4ea27c0149 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/VorbisBitArray.java @@ -0,0 +1,129 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * Wraps a byte array, providing methods that allow it to be read as a Vorbis bitstream. + * + * @see Vorbis bitpacking + * specification + */ +public final class VorbisBitArray { + + private final byte[] data; + private final int byteLimit; + + private int byteOffset; + private int bitOffset; + + /** + * Creates a new instance that wraps an existing array. + * + * @param data the array to wrap. + */ + public VorbisBitArray(byte[] data) { + this.data = data; + byteLimit = data.length; + } + + /** + * Resets the reading position to zero. + */ + public void reset() { + byteOffset = 0; + bitOffset = 0; + } + + /** + * Reads a single bit. + * + * @return {@code true} if the bit is set, {@code false} otherwise. + */ + public boolean readBit() { + boolean returnValue = (((data[byteOffset] & 0xFF) >> bitOffset) & 0x01) == 1; + skipBits(1); + return returnValue; + } + + /** + * Reads up to 32 bits. + * + * @param numBits The number of bits to read. + * @return An integer whose bottom {@code numBits} bits hold the read data. + */ + public int readBits(int numBits) { + int tempByteOffset = byteOffset; + int bitsRead = Math.min(numBits, 8 - bitOffset); + int returnValue = ((data[tempByteOffset++] & 0xFF) >> bitOffset) & (0xFF >> (8 - bitsRead)); + while (bitsRead < numBits) { + returnValue |= (data[tempByteOffset++] & 0xFF) << bitsRead; + bitsRead += 8; + } + returnValue &= 0xFFFFFFFF >>> (32 - numBits); + skipBits(numBits); + return returnValue; + } + + /** + * Skips {@code numberOfBits} bits. + * + * @param numBits The number of bits to skip. + */ + public void skipBits(int numBits) { + int numBytes = numBits / 8; + byteOffset += numBytes; + bitOffset += numBits - (numBytes * 8); + if (bitOffset > 7) { + byteOffset++; + bitOffset -= 8; + } + assertValidOffset(); + } + + /** + * Returns the reading position in bits. + */ + public int getPosition() { + return byteOffset * 8 + bitOffset; + } + + /** + * Sets the reading position in bits. + * + * @param position The new reading position in bits. + */ + public void setPosition(int position) { + byteOffset = position / 8; + bitOffset = position - (byteOffset * 8); + assertValidOffset(); + } + + /** + * Returns the number of remaining bits. + */ + public int bitsLeft() { + return (byteLimit - byteOffset) * 8 - bitOffset; + } + + private void assertValidOffset() { + // It is fine for position to be at the end of the array, but no further. + Assertions.checkState(byteOffset >= 0 + && (byteOffset < byteLimit || (byteOffset == byteLimit && bitOffset == 0))); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/VorbisUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/VorbisUtil.java new file mode 100644 index 0000000000..bdd3e13b99 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/VorbisUtil.java @@ -0,0 +1,522 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.Arrays; + +/** Utility methods for parsing Vorbis streams. */ +public final class VorbisUtil { + + /** Vorbis comment header. */ + public static final class CommentHeader { + + public final String vendor; + public final String[] comments; + public final int length; + + public CommentHeader(String vendor, String[] comments, int length) { + this.vendor = vendor; + this.comments = comments; + this.length = length; + } + } + + /** Vorbis identification header. */ + public static final class VorbisIdHeader { + + public final long version; + public final int channels; + public final long sampleRate; + public final int bitrateMax; + public final int bitrateNominal; + public final int bitrateMin; + public final int blockSize0; + public final int blockSize1; + public final boolean framingFlag; + public final byte[] data; + + public VorbisIdHeader( + long version, + int channels, + long sampleRate, + int bitrateMax, + int bitrateNominal, + int bitrateMin, + int blockSize0, + int blockSize1, + boolean framingFlag, + byte[] data) { + this.version = version; + this.channels = channels; + this.sampleRate = sampleRate; + this.bitrateMax = bitrateMax; + this.bitrateNominal = bitrateNominal; + this.bitrateMin = bitrateMin; + this.blockSize0 = blockSize0; + this.blockSize1 = blockSize1; + this.framingFlag = framingFlag; + this.data = data; + } + + public int getApproximateBitrate() { + return bitrateNominal == 0 ? (bitrateMin + bitrateMax) / 2 : bitrateNominal; + } + } + + /** Vorbis setup header modes. */ + public static final class Mode { + + public final boolean blockFlag; + public final int windowType; + public final int transformType; + public final int mapping; + + public Mode(boolean blockFlag, int windowType, int transformType, int mapping) { + this.blockFlag = blockFlag; + this.windowType = windowType; + this.transformType = transformType; + this.mapping = mapping; + } + } + + private static final String TAG = "VorbisUtil"; + + /** + * Returns ilog(x), which is the index of the highest set bit in {@code x}. + * + * @see + * Vorbis spec + * @param x the value of which the ilog should be calculated. + * @return ilog(x) + */ + public static int iLog(int x) { + int val = 0; + while (x > 0) { + val++; + x >>>= 1; + } + return val; + } + + /** + * Reads a Vorbis identification header from {@code headerData}. + * + * @see Vorbis + * spec/Identification header + * @param headerData a {@link ParsableByteArray} wrapping the header data. + * @return a {@link VorbisUtil.VorbisIdHeader} with meta data. + * @throws ParserException thrown if invalid capture pattern is detected. + */ + public static VorbisIdHeader readVorbisIdentificationHeader(ParsableByteArray headerData) + throws ParserException { + + verifyVorbisHeaderCapturePattern(0x01, headerData, false); + + long version = headerData.readLittleEndianUnsignedInt(); + int channels = headerData.readUnsignedByte(); + long sampleRate = headerData.readLittleEndianUnsignedInt(); + int bitrateMax = headerData.readLittleEndianInt(); + int bitrateNominal = headerData.readLittleEndianInt(); + int bitrateMin = headerData.readLittleEndianInt(); + + int blockSize = headerData.readUnsignedByte(); + int blockSize0 = (int) Math.pow(2, blockSize & 0x0F); + int blockSize1 = (int) Math.pow(2, (blockSize & 0xF0) >> 4); + + boolean framingFlag = (headerData.readUnsignedByte() & 0x01) > 0; + // raw data of Vorbis setup header has to be passed to decoder as CSD buffer #1 + byte[] data = Arrays.copyOf(headerData.data, headerData.limit()); + + return new VorbisIdHeader(version, channels, sampleRate, bitrateMax, bitrateNominal, bitrateMin, + blockSize0, blockSize1, framingFlag, data); + } + + /** + * Reads a Vorbis comment header. + * + * @see Vorbis + * spec/Comment header + * @param headerData A {@link ParsableByteArray} wrapping the header data. + * @return A {@link VorbisUtil.CommentHeader} with all the comments. + * @throws ParserException If an error occurs parsing the comment header. + */ + public static CommentHeader readVorbisCommentHeader(ParsableByteArray headerData) + throws ParserException { + return readVorbisCommentHeader( + headerData, /* hasMetadataHeader= */ true, /* hasFramingBit= */ true); + } + + /** + * Reads a Vorbis comment header. + * + *

The data provided may not contain the Vorbis metadata common header and the framing bit. + * + * @see Vorbis + * spec/Comment header + * @param headerData A {@link ParsableByteArray} wrapping the header data. + * @param hasMetadataHeader Whether the {@code headerData} contains a Vorbis metadata common + * header preceding the comment header. + * @param hasFramingBit Whether the {@code headerData} contains a framing bit. + * @return A {@link VorbisUtil.CommentHeader} with all the comments. + * @throws ParserException If an error occurs parsing the comment header. + */ + public static CommentHeader readVorbisCommentHeader( + ParsableByteArray headerData, boolean hasMetadataHeader, boolean hasFramingBit) + throws ParserException { + + if (hasMetadataHeader) { + verifyVorbisHeaderCapturePattern(/* headerType= */ 0x03, headerData, /* quiet= */ false); + } + int length = 7; + + int len = (int) headerData.readLittleEndianUnsignedInt(); + length += 4; + String vendor = headerData.readString(len); + length += vendor.length(); + + long commentListLen = headerData.readLittleEndianUnsignedInt(); + String[] comments = new String[(int) commentListLen]; + length += 4; + for (int i = 0; i < commentListLen; i++) { + len = (int) headerData.readLittleEndianUnsignedInt(); + length += 4; + comments[i] = headerData.readString(len); + length += comments[i].length(); + } + if (hasFramingBit && (headerData.readUnsignedByte() & 0x01) == 0) { + throw new ParserException("framing bit expected to be set"); + } + length += 1; + return new CommentHeader(vendor, comments, length); + } + + /** + * Verifies whether the next bytes in {@code header} are a Vorbis header of the given {@code + * headerType}. + * + * @param headerType the type of the header expected. + * @param header the alleged header bytes. + * @param quiet if {@code true} no exceptions are thrown. Instead {@code false} is returned. + * @return the number of bytes read. + * @throws ParserException thrown if header type or capture pattern is not as expected. + */ + public static boolean verifyVorbisHeaderCapturePattern( + int headerType, ParsableByteArray header, boolean quiet) throws ParserException { + if (header.bytesLeft() < 7) { + if (quiet) { + return false; + } else { + throw new ParserException("too short header: " + header.bytesLeft()); + } + } + + if (header.readUnsignedByte() != headerType) { + if (quiet) { + return false; + } else { + throw new ParserException("expected header type " + Integer.toHexString(headerType)); + } + } + + if (!(header.readUnsignedByte() == 'v' + && header.readUnsignedByte() == 'o' + && header.readUnsignedByte() == 'r' + && header.readUnsignedByte() == 'b' + && header.readUnsignedByte() == 'i' + && header.readUnsignedByte() == 's')) { + if (quiet) { + return false; + } else { + throw new ParserException("expected characters 'vorbis'"); + } + } + return true; + } + + /** + * This method reads the modes which are located at the very end of the Vorbis setup header. + * That's why we need to partially decode or at least read the entire setup header to know where + * to start reading the modes. + * + * @see Vorbis + * spec/Setup header + * @param headerData a {@link ParsableByteArray} containing setup header data. + * @param channels the number of channels. + * @return an array of {@link Mode}s. + * @throws ParserException thrown if bit stream is invalid. + */ + public static Mode[] readVorbisModes(ParsableByteArray headerData, int channels) + throws ParserException { + + verifyVorbisHeaderCapturePattern(0x05, headerData, false); + + int numberOfBooks = headerData.readUnsignedByte() + 1; + + VorbisBitArray bitArray = new VorbisBitArray(headerData.data); + bitArray.skipBits(headerData.getPosition() * 8); + + for (int i = 0; i < numberOfBooks; i++) { + readBook(bitArray); + } + + int timeCount = bitArray.readBits(6) + 1; + for (int i = 0; i < timeCount; i++) { + if (bitArray.readBits(16) != 0x00) { + throw new ParserException("placeholder of time domain transforms not zeroed out"); + } + } + readFloors(bitArray); + readResidues(bitArray); + readMappings(channels, bitArray); + + Mode[] modes = readModes(bitArray); + if (!bitArray.readBit()) { + throw new ParserException("framing bit after modes not set as expected"); + } + return modes; + } + + private static Mode[] readModes(VorbisBitArray bitArray) { + int modeCount = bitArray.readBits(6) + 1; + Mode[] modes = new Mode[modeCount]; + for (int i = 0; i < modeCount; i++) { + boolean blockFlag = bitArray.readBit(); + int windowType = bitArray.readBits(16); + int transformType = bitArray.readBits(16); + int mapping = bitArray.readBits(8); + modes[i] = new Mode(blockFlag, windowType, transformType, mapping); + } + return modes; + } + + private static void readMappings(int channels, VorbisBitArray bitArray) + throws ParserException { + int mappingsCount = bitArray.readBits(6) + 1; + for (int i = 0; i < mappingsCount; i++) { + int mappingType = bitArray.readBits(16); + if (mappingType != 0) { + Log.e(TAG, "mapping type other than 0 not supported: " + mappingType); + continue; + } + int submaps; + if (bitArray.readBit()) { + submaps = bitArray.readBits(4) + 1; + } else { + submaps = 1; + } + int couplingSteps; + if (bitArray.readBit()) { + couplingSteps = bitArray.readBits(8) + 1; + for (int j = 0; j < couplingSteps; j++) { + bitArray.skipBits(iLog(channels - 1)); // magnitude + bitArray.skipBits(iLog(channels - 1)); // angle + } + } /*else { + couplingSteps = 0; + }*/ + if (bitArray.readBits(2) != 0x00) { + throw new ParserException("to reserved bits must be zero after mapping coupling steps"); + } + if (submaps > 1) { + for (int j = 0; j < channels; j++) { + bitArray.skipBits(4); // mappingMux + } + } + for (int j = 0; j < submaps; j++) { + bitArray.skipBits(8); // discard + bitArray.skipBits(8); // submapFloor + bitArray.skipBits(8); // submapResidue + } + } + } + + private static void readResidues(VorbisBitArray bitArray) throws ParserException { + int residueCount = bitArray.readBits(6) + 1; + for (int i = 0; i < residueCount; i++) { + int residueType = bitArray.readBits(16); + if (residueType > 2) { + throw new ParserException("residueType greater than 2 is not decodable"); + } else { + bitArray.skipBits(24); // begin + bitArray.skipBits(24); // end + bitArray.skipBits(24); // partitionSize (add one) + int classifications = bitArray.readBits(6) + 1; + bitArray.skipBits(8); // classbook + int[] cascade = new int[classifications]; + for (int j = 0; j < classifications; j++) { + int highBits = 0; + int lowBits = bitArray.readBits(3); + if (bitArray.readBit()) { + highBits = bitArray.readBits(5); + } + cascade[j] = highBits * 8 + lowBits; + } + for (int j = 0; j < classifications; j++) { + for (int k = 0; k < 8; k++) { + if ((cascade[j] & (0x01 << k)) != 0) { + bitArray.skipBits(8); // discard + } + } + } + } + } + } + + private static void readFloors(VorbisBitArray bitArray) throws ParserException { + int floorCount = bitArray.readBits(6) + 1; + for (int i = 0; i < floorCount; i++) { + int floorType = bitArray.readBits(16); + switch (floorType) { + case 0: + bitArray.skipBits(8); //order + bitArray.skipBits(16); // rate + bitArray.skipBits(16); // barkMapSize + bitArray.skipBits(6); // amplitudeBits + bitArray.skipBits(8); // amplitudeOffset + int floorNumberOfBooks = bitArray.readBits(4) + 1; + for (int j = 0; j < floorNumberOfBooks; j++) { + bitArray.skipBits(8); + } + break; + case 1: + int partitions = bitArray.readBits(5); + int maximumClass = -1; + int[] partitionClassList = new int[partitions]; + for (int j = 0; j < partitions; j++) { + partitionClassList[j] = bitArray.readBits(4); + if (partitionClassList[j] > maximumClass) { + maximumClass = partitionClassList[j]; + } + } + int[] classDimensions = new int[maximumClass + 1]; + for (int j = 0; j < classDimensions.length; j++) { + classDimensions[j] = bitArray.readBits(3) + 1; + int classSubclasses = bitArray.readBits(2); + if (classSubclasses > 0) { + bitArray.skipBits(8); // classMasterbooks + } + for (int k = 0; k < (1 << classSubclasses); k++) { + bitArray.skipBits(8); // subclassBook (subtract 1) + } + } + bitArray.skipBits(2); // multiplier (add one) + int rangeBits = bitArray.readBits(4); + int count = 0; + for (int j = 0, k = 0; j < partitions; j++) { + int idx = partitionClassList[j]; + count += classDimensions[idx]; + for (; k < count; k++) { + bitArray.skipBits(rangeBits); // floorValue + } + } + break; + default: + throw new ParserException("floor type greater than 1 not decodable: " + floorType); + } + } + } + + private static CodeBook readBook(VorbisBitArray bitArray) throws ParserException { + if (bitArray.readBits(24) != 0x564342) { + throw new ParserException("expected code book to start with [0x56, 0x43, 0x42] at " + + bitArray.getPosition()); + } + int dimensions = bitArray.readBits(16); + int entries = bitArray.readBits(24); + long[] lengthMap = new long[entries]; + + boolean isOrdered = bitArray.readBit(); + if (!isOrdered) { + boolean isSparse = bitArray.readBit(); + for (int i = 0; i < lengthMap.length; i++) { + if (isSparse) { + if (bitArray.readBit()) { + lengthMap[i] = (long) (bitArray.readBits(5) + 1); + } else { // entry unused + lengthMap[i] = 0; + } + } else { // not sparse + lengthMap[i] = (long) (bitArray.readBits(5) + 1); + } + } + } else { + int length = bitArray.readBits(5) + 1; + for (int i = 0; i < lengthMap.length;) { + int num = bitArray.readBits(iLog(entries - i)); + for (int j = 0; j < num && i < lengthMap.length; i++, j++) { + lengthMap[i] = length; + } + length++; + } + } + + int lookupType = bitArray.readBits(4); + if (lookupType > 2) { + throw new ParserException("lookup type greater than 2 not decodable: " + lookupType); + } else if (lookupType == 1 || lookupType == 2) { + bitArray.skipBits(32); // minimumValue + bitArray.skipBits(32); // deltaValue + int valueBits = bitArray.readBits(4) + 1; + bitArray.skipBits(1); // sequenceP + long lookupValuesCount; + if (lookupType == 1) { + if (dimensions != 0) { + lookupValuesCount = mapType1QuantValues(entries, dimensions); + } else { + lookupValuesCount = 0; + } + } else { + lookupValuesCount = (long) entries * dimensions; + } + // discard (no decoding required yet) + bitArray.skipBits((int) (lookupValuesCount * valueBits)); + } + return new CodeBook(dimensions, entries, lengthMap, lookupType, isOrdered); + } + + /** + * @see _book_maptype1_quantvals + */ + private static long mapType1QuantValues(long entries, long dimension) { + return (long) Math.floor(Math.pow(entries, 1.d / dimension)); + } + + private VorbisUtil() { + // Prevent instantiation. + } + + private static final class CodeBook { + + public final int dimensions; + public final int entries; + public final long[] lengthMap; + public final int lookupType; + public final boolean isOrdered; + + public CodeBook(int dimensions, int entries, long[] lengthMap, int lookupType, + boolean isOrdered) { + this.dimensions = dimensions; + this.entries = entries; + this.lengthMap = lengthMap; + this.lookupType = lookupType; + this.isOrdered = isOrdered; + } + + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/amr/AmrExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/amr/AmrExtractor.java new file mode 100644 index 0000000000..35f539a394 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/amr/AmrExtractor.java @@ -0,0 +1,383 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.amr; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ConstantBitrateSeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.EOFException; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Arrays; + +/** + * Extracts data from the AMR containers format (either AMR or AMR-WB). This follows RFC-4867, + * section 5. + * + *

This extractor only supports single-channel AMR container formats. + */ +public final class AmrExtractor implements Extractor { + + /** Factory for {@link AmrExtractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new AmrExtractor()}; + + /** + * Flags controlling the behavior of the extractor. Possible flag value is {@link + * #FLAG_ENABLE_CONSTANT_BITRATE_SEEKING}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {FLAG_ENABLE_CONSTANT_BITRATE_SEEKING}) + public @interface Flags {} + /** + * Flag to force enable seeking using a constant bitrate assumption in cases where seeking would + * otherwise not be possible. + */ + public static final int FLAG_ENABLE_CONSTANT_BITRATE_SEEKING = 1; + + /** + * The frame size in bytes, including header (1 byte), for each of the 16 frame types for AMR + * narrow band. + */ + private static final int[] frameSizeBytesByTypeNb = { + 13, + 14, + 16, + 18, + 20, + 21, + 27, + 32, + 6, // AMR SID + 7, // GSM-EFR SID + 6, // TDMA-EFR SID + 6, // PDC-EFR SID + 1, // Future use + 1, // Future use + 1, // Future use + 1 // No data + }; + + /** + * The frame size in bytes, including header (1 byte), for each of the 16 frame types for AMR wide + * band. + */ + private static final int[] frameSizeBytesByTypeWb = { + 18, + 24, + 33, + 37, + 41, + 47, + 51, + 59, + 61, + 6, // AMR-WB SID + 1, // Future use + 1, // Future use + 1, // Future use + 1, // Future use + 1, // speech lost + 1 // No data + }; + + private static final byte[] amrSignatureNb = Util.getUtf8Bytes("#!AMR\n"); + private static final byte[] amrSignatureWb = Util.getUtf8Bytes("#!AMR-WB\n"); + + /** Theoretical maximum frame size for a AMR frame. */ + private static final int MAX_FRAME_SIZE_BYTES = frameSizeBytesByTypeWb[8]; + /** + * The required number of samples in the stream with same sample size to classify the stream as a + * constant-bitrate-stream. + */ + private static final int NUM_SAME_SIZE_CONSTANT_BIT_RATE_THRESHOLD = 20; + + private static final int SAMPLE_RATE_WB = 16_000; + private static final int SAMPLE_RATE_NB = 8_000; + private static final int SAMPLE_TIME_PER_FRAME_US = 20_000; + + private final byte[] scratch; + private final @Flags int flags; + + private boolean isWideBand; + private long currentSampleTimeUs; + private int currentSampleSize; + private int currentSampleBytesRemaining; + private boolean hasOutputSeekMap; + private long firstSamplePosition; + private int firstSampleSize; + private int numSamplesWithSameSize; + private long timeOffsetUs; + + private ExtractorOutput extractorOutput; + private TrackOutput trackOutput; + @Nullable private SeekMap seekMap; + private boolean hasOutputFormat; + + public AmrExtractor() { + this(/* flags= */ 0); + } + + /** @param flags Flags that control the extractor's behavior. */ + public AmrExtractor(@Flags int flags) { + this.flags = flags; + scratch = new byte[1]; + firstSampleSize = C.LENGTH_UNSET; + } + + // Extractor implementation. + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + return readAmrHeader(input); + } + + @Override + public void init(ExtractorOutput extractorOutput) { + this.extractorOutput = extractorOutput; + trackOutput = extractorOutput.track(/* id= */ 0, C.TRACK_TYPE_AUDIO); + extractorOutput.endTracks(); + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + if (input.getPosition() == 0) { + if (!readAmrHeader(input)) { + throw new ParserException("Could not find AMR header."); + } + } + maybeOutputFormat(); + int sampleReadResult = readSample(input); + maybeOutputSeekMap(input.getLength(), sampleReadResult); + return sampleReadResult; + } + + @Override + public void seek(long position, long timeUs) { + currentSampleTimeUs = 0; + currentSampleSize = 0; + currentSampleBytesRemaining = 0; + if (position != 0 && seekMap instanceof ConstantBitrateSeekMap) { + timeOffsetUs = ((ConstantBitrateSeekMap) seekMap).getTimeUsAtPosition(position); + } else { + timeOffsetUs = 0; + } + } + + @Override + public void release() { + // Do nothing + } + + /* package */ static int frameSizeBytesByTypeNb(int frameType) { + return frameSizeBytesByTypeNb[frameType]; + } + + /* package */ static int frameSizeBytesByTypeWb(int frameType) { + return frameSizeBytesByTypeWb[frameType]; + } + + /* package */ static byte[] amrSignatureNb() { + return Arrays.copyOf(amrSignatureNb, amrSignatureNb.length); + } + + /* package */ static byte[] amrSignatureWb() { + return Arrays.copyOf(amrSignatureWb, amrSignatureWb.length); + } + + // Internal methods. + + /** + * Peeks the AMR header from the beginning of the input, and consumes it if it exists. + * + * @param input The {@link ExtractorInput} from which data should be peeked/read. + * @return Whether the AMR header has been read. + */ + private boolean readAmrHeader(ExtractorInput input) throws IOException, InterruptedException { + if (peekAmrSignature(input, amrSignatureNb)) { + isWideBand = false; + input.skipFully(amrSignatureNb.length); + return true; + } else if (peekAmrSignature(input, amrSignatureWb)) { + isWideBand = true; + input.skipFully(amrSignatureWb.length); + return true; + } + return false; + } + + /** Peeks from the beginning of the input to see if the given AMR signature exists. */ + private boolean peekAmrSignature(ExtractorInput input, byte[] amrSignature) + throws IOException, InterruptedException { + input.resetPeekPosition(); + byte[] header = new byte[amrSignature.length]; + input.peekFully(header, 0, amrSignature.length); + return Arrays.equals(header, amrSignature); + } + + private void maybeOutputFormat() { + if (!hasOutputFormat) { + hasOutputFormat = true; + String mimeType = isWideBand ? MimeTypes.AUDIO_AMR_WB : MimeTypes.AUDIO_AMR_NB; + int sampleRate = isWideBand ? SAMPLE_RATE_WB : SAMPLE_RATE_NB; + trackOutput.format( + Format.createAudioSampleFormat( + /* id= */ null, + mimeType, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + MAX_FRAME_SIZE_BYTES, + /* channelCount= */ 1, + sampleRate, + /* pcmEncoding= */ Format.NO_VALUE, + /* initializationData= */ null, + /* drmInitData= */ null, + /* selectionFlags= */ 0, + /* language= */ null)); + } + } + + private int readSample(ExtractorInput extractorInput) throws IOException, InterruptedException { + if (currentSampleBytesRemaining == 0) { + try { + currentSampleSize = peekNextSampleSize(extractorInput); + } catch (EOFException e) { + return RESULT_END_OF_INPUT; + } + currentSampleBytesRemaining = currentSampleSize; + if (firstSampleSize == C.LENGTH_UNSET) { + firstSamplePosition = extractorInput.getPosition(); + firstSampleSize = currentSampleSize; + } + if (firstSampleSize == currentSampleSize) { + numSamplesWithSameSize++; + } + } + + int bytesAppended = + trackOutput.sampleData( + extractorInput, currentSampleBytesRemaining, /* allowEndOfInput= */ true); + if (bytesAppended == C.RESULT_END_OF_INPUT) { + return RESULT_END_OF_INPUT; + } + currentSampleBytesRemaining -= bytesAppended; + if (currentSampleBytesRemaining > 0) { + return RESULT_CONTINUE; + } + + trackOutput.sampleMetadata( + timeOffsetUs + currentSampleTimeUs, + C.BUFFER_FLAG_KEY_FRAME, + currentSampleSize, + /* offset= */ 0, + /* encryptionData= */ null); + currentSampleTimeUs += SAMPLE_TIME_PER_FRAME_US; + return RESULT_CONTINUE; + } + + private int peekNextSampleSize(ExtractorInput extractorInput) + throws IOException, InterruptedException { + extractorInput.resetPeekPosition(); + extractorInput.peekFully(scratch, /* offset= */ 0, /* length= */ 1); + + byte frameHeader = scratch[0]; + if ((frameHeader & 0x83) > 0) { + // The padding bits are at bit-1 positions in the following pattern: 1000 0011 + // Padding bits must be 0. + throw new ParserException("Invalid padding bits for frame header " + frameHeader); + } + + int frameType = (frameHeader >> 3) & 0x0f; + return getFrameSizeInBytes(frameType); + } + + private int getFrameSizeInBytes(int frameType) throws ParserException { + if (!isValidFrameType(frameType)) { + throw new ParserException( + "Illegal AMR " + (isWideBand ? "WB" : "NB") + " frame type " + frameType); + } + + return isWideBand ? frameSizeBytesByTypeWb[frameType] : frameSizeBytesByTypeNb[frameType]; + } + + private boolean isValidFrameType(int frameType) { + return frameType >= 0 + && frameType <= 15 + && (isWideBandValidFrameType(frameType) || isNarrowBandValidFrameType(frameType)); + } + + private boolean isWideBandValidFrameType(int frameType) { + // For wide band, type 10-13 are for future use. + return isWideBand && (frameType < 10 || frameType > 13); + } + + private boolean isNarrowBandValidFrameType(int frameType) { + // For narrow band, type 12-14 are for future use. + return !isWideBand && (frameType < 12 || frameType > 14); + } + + private void maybeOutputSeekMap(long inputLength, int sampleReadResult) { + if (hasOutputSeekMap) { + return; + } + + if ((flags & FLAG_ENABLE_CONSTANT_BITRATE_SEEKING) == 0 + || inputLength == C.LENGTH_UNSET + || (firstSampleSize != C.LENGTH_UNSET && firstSampleSize != currentSampleSize)) { + seekMap = new SeekMap.Unseekable(C.TIME_UNSET); + extractorOutput.seekMap(seekMap); + hasOutputSeekMap = true; + } else if (numSamplesWithSameSize >= NUM_SAME_SIZE_CONSTANT_BIT_RATE_THRESHOLD + || sampleReadResult == RESULT_END_OF_INPUT) { + seekMap = getConstantBitrateSeekMap(inputLength); + extractorOutput.seekMap(seekMap); + hasOutputSeekMap = true; + } + } + + private SeekMap getConstantBitrateSeekMap(long inputLength) { + int bitrate = getBitrateFromFrameSize(firstSampleSize, SAMPLE_TIME_PER_FRAME_US); + return new ConstantBitrateSeekMap(inputLength, firstSamplePosition, bitrate, firstSampleSize); + } + + /** + * Returns the stream bitrate, given a frame size and the duration of that frame in microseconds. + * + * @param frameSize The size of each frame in the stream. + * @param durationUsPerFrame The duration of the given frame in microseconds. + * @return The stream bitrate. + */ + private static int getBitrateFromFrameSize(int frameSize, long durationUsPerFrame) { + return (int) ((frameSize * C.BITS_PER_BYTE * C.MICROS_PER_SECOND) / durationUsPerFrame); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flac/FlacBinarySearchSeeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flac/FlacBinarySearchSeeker.java new file mode 100644 index 0000000000..d13b1f394d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flac/FlacBinarySearchSeeker.java @@ -0,0 +1,131 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.flac; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.BinarySearchSeeker; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.FlacFrameReader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.FlacFrameReader.SampleNumberHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacConstants; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacStreamMetadata; +import java.io.IOException; + +/** + * A {@link SeekMap} implementation for FLAC stream using binary search. + * + *

This seeker performs seeking by using binary search within the stream, until it finds the + * frame that contains the target sample. + */ +/* package */ final class FlacBinarySearchSeeker extends BinarySearchSeeker { + + /** + * Creates a {@link FlacBinarySearchSeeker}. + * + * @param flacStreamMetadata The stream metadata. + * @param frameStartMarker The frame start marker, consisting of the 2 bytes by which every frame + * in the stream must start. + * @param firstFramePosition The byte offset of the first frame in the stream. + * @param inputLength The length of the stream in bytes. + */ + public FlacBinarySearchSeeker( + FlacStreamMetadata flacStreamMetadata, + int frameStartMarker, + long firstFramePosition, + long inputLength) { + super( + /* seekTimestampConverter= */ flacStreamMetadata::getSampleNumber, + new FlacTimestampSeeker(flacStreamMetadata, frameStartMarker), + flacStreamMetadata.getDurationUs(), + /* floorTimePosition= */ 0, + /* ceilingTimePosition= */ flacStreamMetadata.totalSamples, + /* floorBytePosition= */ firstFramePosition, + /* ceilingBytePosition= */ inputLength, + /* approxBytesPerFrame= */ flacStreamMetadata.getApproxBytesPerFrame(), + /* minimumSearchRange= */ Math.max( + FlacConstants.MIN_FRAME_HEADER_SIZE, flacStreamMetadata.minFrameSize)); + } + + private static final class FlacTimestampSeeker implements TimestampSeeker { + + private final FlacStreamMetadata flacStreamMetadata; + private final int frameStartMarker; + private final SampleNumberHolder sampleNumberHolder; + + private FlacTimestampSeeker(FlacStreamMetadata flacStreamMetadata, int frameStartMarker) { + this.flacStreamMetadata = flacStreamMetadata; + this.frameStartMarker = frameStartMarker; + sampleNumberHolder = new SampleNumberHolder(); + } + + @Override + public TimestampSearchResult searchForTimestamp(ExtractorInput input, long targetSampleNumber) + throws IOException, InterruptedException { + long searchPosition = input.getPosition(); + + // Find left frame. + long leftFrameFirstSampleNumber = findNextFrame(input); + long leftFramePosition = input.getPeekPosition(); + + input.advancePeekPosition( + Math.max(FlacConstants.MIN_FRAME_HEADER_SIZE, flacStreamMetadata.minFrameSize)); + + // Find right frame. + long rightFrameFirstSampleNumber = findNextFrame(input); + long rightFramePosition = input.getPeekPosition(); + + if (leftFrameFirstSampleNumber <= targetSampleNumber + && rightFrameFirstSampleNumber > targetSampleNumber) { + return TimestampSearchResult.targetFoundResult(leftFramePosition); + } else if (rightFrameFirstSampleNumber <= targetSampleNumber) { + return TimestampSearchResult.underestimatedResult( + rightFrameFirstSampleNumber, rightFramePosition); + } else { + return TimestampSearchResult.overestimatedResult( + leftFrameFirstSampleNumber, searchPosition); + } + } + + /** + * Searches for the next frame in {@code input}. + * + *

The peek position is advanced to the start of the found frame, or at the end of the stream + * if no frame was found. + * + * @param input The input from which to search (starting from the peek position). + * @return The number of the first sample in the found frame, or the total number of samples in + * the stream if no frame was found. + * @throws IOException If peeking from the input fails. In this case, there is no guarantee on + * the peek position. + * @throws InterruptedException If interrupted while peeking from input. In this case, there is + * no guarantee on the peek position. + */ + private long findNextFrame(ExtractorInput input) throws IOException, InterruptedException { + while (input.getPeekPosition() < input.getLength() - FlacConstants.MIN_FRAME_HEADER_SIZE + && !FlacFrameReader.checkFrameHeaderFromPeek( + input, flacStreamMetadata, frameStartMarker, sampleNumberHolder)) { + input.advancePeekPosition(1); + } + + if (input.getPeekPosition() >= input.getLength() - FlacConstants.MIN_FRAME_HEADER_SIZE) { + input.advancePeekPosition((int) (input.getLength() - input.getPeekPosition())); + return flacStreamMetadata.totalSamples; + } + + return sampleNumberHolder.sampleNumber; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flac/FlacExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flac/FlacExtractor.java new file mode 100644 index 0000000000..fa997001e8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flac/FlacExtractor.java @@ -0,0 +1,411 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.flac; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.FlacFrameReader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.FlacFrameReader.SampleNumberHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.FlacMetadataReader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.FlacSeekTableSeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacConstants; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacStreamMetadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * Extracts data from FLAC container format. + * + *

The format specification can be found at https://xiph.org/flac/format.html. + */ +public final class FlacExtractor implements Extractor { + + /** Factory for {@link FlacExtractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new FlacExtractor()}; + + /** + * Flags controlling the behavior of the extractor. Possible flag value is {@link + * #FLAG_DISABLE_ID3_METADATA}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {FLAG_DISABLE_ID3_METADATA}) + public @interface Flags {} + + /** + * Flag to disable parsing of ID3 metadata. Can be set to save memory if ID3 metadata is not + * required. + */ + public static final int FLAG_DISABLE_ID3_METADATA = 1; + + /** Parser state. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + STATE_READ_ID3_METADATA, + STATE_GET_STREAM_MARKER_AND_INFO_BLOCK_BYTES, + STATE_READ_STREAM_MARKER, + STATE_READ_METADATA_BLOCKS, + STATE_GET_FRAME_START_MARKER, + STATE_READ_FRAMES + }) + private @interface State {} + + private static final int STATE_READ_ID3_METADATA = 0; + private static final int STATE_GET_STREAM_MARKER_AND_INFO_BLOCK_BYTES = 1; + private static final int STATE_READ_STREAM_MARKER = 2; + private static final int STATE_READ_METADATA_BLOCKS = 3; + private static final int STATE_GET_FRAME_START_MARKER = 4; + private static final int STATE_READ_FRAMES = 5; + + /** Arbitrary buffer length of 32KB, which is ~170ms of 16-bit stereo PCM audio at 48KHz. */ + private static final int BUFFER_LENGTH = 32 * 1024; + + /** Value of an unknown sample number. */ + private static final int SAMPLE_NUMBER_UNKNOWN = -1; + + private final byte[] streamMarkerAndInfoBlock; + private final ParsableByteArray buffer; + private final boolean id3MetadataDisabled; + + private final SampleNumberHolder sampleNumberHolder; + + @MonotonicNonNull private ExtractorOutput extractorOutput; + @MonotonicNonNull private TrackOutput trackOutput; + + private @State int state; + @Nullable private Metadata id3Metadata; + @MonotonicNonNull private FlacStreamMetadata flacStreamMetadata; + private int minFrameSize; + private int frameStartMarker; + @MonotonicNonNull private FlacBinarySearchSeeker binarySearchSeeker; + private int currentFrameBytesWritten; + private long currentFrameFirstSampleNumber; + + /** Constructs an instance with {@code flags = 0}. */ + public FlacExtractor() { + this(/* flags= */ 0); + } + + /** + * Constructs an instance. + * + * @param flags Flags that control the extractor's behavior. Possible flags are described by + * {@link Flags}. + */ + public FlacExtractor(int flags) { + streamMarkerAndInfoBlock = + new byte[FlacConstants.STREAM_MARKER_SIZE + FlacConstants.STREAM_INFO_BLOCK_SIZE]; + buffer = new ParsableByteArray(new byte[BUFFER_LENGTH], /* limit= */ 0); + id3MetadataDisabled = (flags & FLAG_DISABLE_ID3_METADATA) != 0; + sampleNumberHolder = new SampleNumberHolder(); + state = STATE_READ_ID3_METADATA; + } + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + FlacMetadataReader.peekId3Metadata(input, /* parseData= */ false); + return FlacMetadataReader.checkAndPeekStreamMarker(input); + } + + @Override + public void init(ExtractorOutput output) { + extractorOutput = output; + trackOutput = output.track(/* id= */ 0, C.TRACK_TYPE_AUDIO); + output.endTracks(); + } + + @Override + public @ReadResult int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + switch (state) { + case STATE_READ_ID3_METADATA: + readId3Metadata(input); + return Extractor.RESULT_CONTINUE; + case STATE_GET_STREAM_MARKER_AND_INFO_BLOCK_BYTES: + getStreamMarkerAndInfoBlockBytes(input); + return Extractor.RESULT_CONTINUE; + case STATE_READ_STREAM_MARKER: + readStreamMarker(input); + return Extractor.RESULT_CONTINUE; + case STATE_READ_METADATA_BLOCKS: + readMetadataBlocks(input); + return Extractor.RESULT_CONTINUE; + case STATE_GET_FRAME_START_MARKER: + getFrameStartMarker(input); + return Extractor.RESULT_CONTINUE; + case STATE_READ_FRAMES: + return readFrames(input, seekPosition); + default: + throw new IllegalStateException(); + } + } + + @Override + public void seek(long position, long timeUs) { + if (position == 0) { + state = STATE_READ_ID3_METADATA; + } else if (binarySearchSeeker != null) { + binarySearchSeeker.setSeekTargetUs(timeUs); + } + currentFrameFirstSampleNumber = timeUs == 0 ? 0 : SAMPLE_NUMBER_UNKNOWN; + currentFrameBytesWritten = 0; + buffer.reset(); + } + + @Override + public void release() { + // Do nothing. + } + + // Private methods. + + private void readId3Metadata(ExtractorInput input) throws IOException, InterruptedException { + id3Metadata = FlacMetadataReader.readId3Metadata(input, /* parseData= */ !id3MetadataDisabled); + state = STATE_GET_STREAM_MARKER_AND_INFO_BLOCK_BYTES; + } + + private void getStreamMarkerAndInfoBlockBytes(ExtractorInput input) + throws IOException, InterruptedException { + input.peekFully(streamMarkerAndInfoBlock, 0, streamMarkerAndInfoBlock.length); + input.resetPeekPosition(); + state = STATE_READ_STREAM_MARKER; + } + + private void readStreamMarker(ExtractorInput input) throws IOException, InterruptedException { + FlacMetadataReader.readStreamMarker(input); + state = STATE_READ_METADATA_BLOCKS; + } + + private void readMetadataBlocks(ExtractorInput input) throws IOException, InterruptedException { + boolean isLastMetadataBlock = false; + FlacMetadataReader.FlacStreamMetadataHolder metadataHolder = + new FlacMetadataReader.FlacStreamMetadataHolder(flacStreamMetadata); + while (!isLastMetadataBlock) { + isLastMetadataBlock = FlacMetadataReader.readMetadataBlock(input, metadataHolder); + // Save the current metadata in case an exception occurs. + flacStreamMetadata = castNonNull(metadataHolder.flacStreamMetadata); + } + + Assertions.checkNotNull(flacStreamMetadata); + minFrameSize = Math.max(flacStreamMetadata.minFrameSize, FlacConstants.MIN_FRAME_HEADER_SIZE); + castNonNull(trackOutput) + .format(flacStreamMetadata.getFormat(streamMarkerAndInfoBlock, id3Metadata)); + + state = STATE_GET_FRAME_START_MARKER; + } + + private void getFrameStartMarker(ExtractorInput input) throws IOException, InterruptedException { + frameStartMarker = FlacMetadataReader.getFrameStartMarker(input); + castNonNull(extractorOutput) + .seekMap( + getSeekMap( + /* firstFramePosition= */ input.getPosition(), + /* streamLength= */ input.getLength())); + + state = STATE_READ_FRAMES; + } + + private @ReadResult int readFrames(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + Assertions.checkNotNull(trackOutput); + Assertions.checkNotNull(flacStreamMetadata); + + // Handle pending binary search seek if necessary. + if (binarySearchSeeker != null && binarySearchSeeker.isSeeking()) { + return binarySearchSeeker.handlePendingSeek(input, seekPosition); + } + + // Set current frame first sample number if it became unknown after seeking. + if (currentFrameFirstSampleNumber == SAMPLE_NUMBER_UNKNOWN) { + currentFrameFirstSampleNumber = + FlacFrameReader.getFirstSampleNumber(input, flacStreamMetadata); + return Extractor.RESULT_CONTINUE; + } + + // Copy more bytes into the buffer. + int currentLimit = buffer.limit(); + boolean foundEndOfInput = false; + if (currentLimit < BUFFER_LENGTH) { + int bytesRead = + input.read( + buffer.data, /* offset= */ currentLimit, /* length= */ BUFFER_LENGTH - currentLimit); + foundEndOfInput = bytesRead == C.RESULT_END_OF_INPUT; + if (!foundEndOfInput) { + buffer.setLimit(currentLimit + bytesRead); + } else if (buffer.bytesLeft() == 0) { + outputSampleMetadata(); + return Extractor.RESULT_END_OF_INPUT; + } + } + + // Search for a frame. + int positionBeforeFindingAFrame = buffer.getPosition(); + + // Skip frame search on the bytes within the minimum frame size. + if (currentFrameBytesWritten < minFrameSize) { + buffer.skipBytes(Math.min(minFrameSize - currentFrameBytesWritten, buffer.bytesLeft())); + } + + long nextFrameFirstSampleNumber = findFrame(buffer, foundEndOfInput); + int numberOfFrameBytes = buffer.getPosition() - positionBeforeFindingAFrame; + buffer.setPosition(positionBeforeFindingAFrame); + trackOutput.sampleData(buffer, numberOfFrameBytes); + currentFrameBytesWritten += numberOfFrameBytes; + + // Frame found. + if (nextFrameFirstSampleNumber != SAMPLE_NUMBER_UNKNOWN) { + outputSampleMetadata(); + currentFrameBytesWritten = 0; + currentFrameFirstSampleNumber = nextFrameFirstSampleNumber; + } + + if (buffer.bytesLeft() < FlacConstants.MAX_FRAME_HEADER_SIZE) { + // The next frame header may not fit in the rest of the buffer, so put the trailing bytes at + // the start of the buffer, and reset the position and limit. + System.arraycopy( + buffer.data, buffer.getPosition(), buffer.data, /* destPos= */ 0, buffer.bytesLeft()); + buffer.reset(buffer.bytesLeft()); + } + + return Extractor.RESULT_CONTINUE; + } + + private SeekMap getSeekMap(long firstFramePosition, long streamLength) { + Assertions.checkNotNull(flacStreamMetadata); + if (flacStreamMetadata.seekTable != null) { + return new FlacSeekTableSeekMap(flacStreamMetadata, firstFramePosition); + } else if (streamLength != C.LENGTH_UNSET && flacStreamMetadata.totalSamples > 0) { + binarySearchSeeker = + new FlacBinarySearchSeeker( + flacStreamMetadata, frameStartMarker, firstFramePosition, streamLength); + return binarySearchSeeker.getSeekMap(); + } else { + return new SeekMap.Unseekable(flacStreamMetadata.getDurationUs()); + } + } + + /** + * Searches for the start of a frame in {@code data}. + * + *

    + *
  • If the search is successful, the position is set to the start of the found frame. + *
  • Otherwise, the position is set to the first unsearched byte. + *
+ * + * @param data The array to be searched. + * @param foundEndOfInput If the end of input was met when filling in the {@code data}. + * @return The number of the first sample in the frame found, or {@code SAMPLE_NUMBER_UNKNOWN} if + * the search was not successful. + */ + private long findFrame(ParsableByteArray data, boolean foundEndOfInput) { + Assertions.checkNotNull(flacStreamMetadata); + + int frameOffset = data.getPosition(); + while (frameOffset <= data.limit() - FlacConstants.MAX_FRAME_HEADER_SIZE) { + data.setPosition(frameOffset); + if (FlacFrameReader.checkAndReadFrameHeader( + data, flacStreamMetadata, frameStartMarker, sampleNumberHolder)) { + data.setPosition(frameOffset); + return sampleNumberHolder.sampleNumber; + } + frameOffset++; + } + + if (foundEndOfInput) { + // Verify whether there is a frame of size < MAX_FRAME_HEADER_SIZE at the end of the stream by + // checking at every position at a distance between MAX_FRAME_HEADER_SIZE and minFrameSize + // from the buffer limit if it corresponds to a valid frame header. + // At every offset, the different possibilities are: + // 1. The current offset indicates the start of a valid frame header. In this case, consider + // that a frame has been found and stop searching. + // 2. A frame starting at the current offset would be invalid. In this case, keep looking for + // a valid frame header. + // 3. The current offset could be the start of a valid frame header, but there is not enough + // bytes remaining to complete the header. As the end of the file has been reached, this + // means that the current offset does not correspond to a new frame and that the last bytes + // of the last frame happen to be a valid partial frame header. This case can occur in two + // ways: + // 3.1. An attempt to read past the buffer is made when reading the potential frame header. + // 3.2. Reading the potential frame header does not exceed the buffer size, but exceeds the + // buffer limit. + // Note that the third case is very unlikely. It never happens if the end of the input has not + // been reached as it is always made sure that the buffer has at least MAX_FRAME_HEADER_SIZE + // bytes available when reading a potential frame header. + while (frameOffset <= data.limit() - minFrameSize) { + data.setPosition(frameOffset); + boolean frameFound; + try { + frameFound = + FlacFrameReader.checkAndReadFrameHeader( + data, flacStreamMetadata, frameStartMarker, sampleNumberHolder); + } catch (IndexOutOfBoundsException e) { + // Case 3.1. + frameFound = false; + } + if (data.getPosition() > data.limit()) { + // TODO: Remove (and update above comments) once [Internal ref: b/147657250] is fixed. + // Case 3.2. + frameFound = false; + } + if (frameFound) { + // Case 1. + data.setPosition(frameOffset); + return sampleNumberHolder.sampleNumber; + } + frameOffset++; + } + // The end of the frame is the end of the file. + data.setPosition(data.limit()); + } else { + data.setPosition(frameOffset); + } + + return SAMPLE_NUMBER_UNKNOWN; + } + + private void outputSampleMetadata() { + long timeUs = + currentFrameFirstSampleNumber + * C.MICROS_PER_SECOND + / castNonNull(flacStreamMetadata).sampleRate; + castNonNull(trackOutput) + .sampleMetadata( + timeUs, + C.BUFFER_FLAG_KEY_FRAME, + currentFrameBytesWritten, + /* offset= */ 0, + /* encryptionData= */ null); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/AudioTagPayloadReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/AudioTagPayloadReader.java new file mode 100644 index 0000000000..54dbaec003 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/AudioTagPayloadReader.java @@ -0,0 +1,130 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.flv; + +import android.util.Pair; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.CodecSpecificDataUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.Collections; + +/** + * Parses audio tags from an FLV stream and extracts AAC frames. + */ +/* package */ final class AudioTagPayloadReader extends TagPayloadReader { + + private static final int AUDIO_FORMAT_MP3 = 2; + private static final int AUDIO_FORMAT_ALAW = 7; + private static final int AUDIO_FORMAT_ULAW = 8; + private static final int AUDIO_FORMAT_AAC = 10; + + private static final int AAC_PACKET_TYPE_SEQUENCE_HEADER = 0; + private static final int AAC_PACKET_TYPE_AAC_RAW = 1; + + private static final int[] AUDIO_SAMPLING_RATE_TABLE = new int[] {5512, 11025, 22050, 44100}; + + // State variables + private boolean hasParsedAudioDataHeader; + private boolean hasOutputFormat; + private int audioFormat; + + public AudioTagPayloadReader(TrackOutput output) { + super(output); + } + + @Override + public void seek() { + // Do nothing. + } + + @Override + protected boolean parseHeader(ParsableByteArray data) throws UnsupportedFormatException { + if (!hasParsedAudioDataHeader) { + int header = data.readUnsignedByte(); + audioFormat = (header >> 4) & 0x0F; + if (audioFormat == AUDIO_FORMAT_MP3) { + int sampleRateIndex = (header >> 2) & 0x03; + int sampleRate = AUDIO_SAMPLING_RATE_TABLE[sampleRateIndex]; + Format format = Format.createAudioSampleFormat(null, MimeTypes.AUDIO_MPEG, null, + Format.NO_VALUE, Format.NO_VALUE, 1, sampleRate, null, null, 0, null); + output.format(format); + hasOutputFormat = true; + } else if (audioFormat == AUDIO_FORMAT_ALAW || audioFormat == AUDIO_FORMAT_ULAW) { + String type = audioFormat == AUDIO_FORMAT_ALAW ? MimeTypes.AUDIO_ALAW + : MimeTypes.AUDIO_MLAW; + Format format = + Format.createAudioSampleFormat( + /* id= */ null, + /* sampleMimeType= */ type, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + /* maxInputSize= */ Format.NO_VALUE, + /* channelCount= */ 1, + /* sampleRate= */ 8000, + /* pcmEncoding= */ Format.NO_VALUE, + /* initializationData= */ null, + /* drmInitData= */ null, + /* selectionFlags= */ 0, + /* language= */ null); + output.format(format); + hasOutputFormat = true; + } else if (audioFormat != AUDIO_FORMAT_AAC) { + throw new UnsupportedFormatException("Audio format not supported: " + audioFormat); + } + hasParsedAudioDataHeader = true; + } else { + // Skip header if it was parsed previously. + data.skipBytes(1); + } + return true; + } + + @Override + protected boolean parsePayload(ParsableByteArray data, long timeUs) throws ParserException { + if (audioFormat == AUDIO_FORMAT_MP3) { + int sampleSize = data.bytesLeft(); + output.sampleData(data, sampleSize); + output.sampleMetadata(timeUs, C.BUFFER_FLAG_KEY_FRAME, sampleSize, 0, null); + return true; + } else { + int packetType = data.readUnsignedByte(); + if (packetType == AAC_PACKET_TYPE_SEQUENCE_HEADER && !hasOutputFormat) { + // Parse the sequence header. + byte[] audioSpecificConfig = new byte[data.bytesLeft()]; + data.readBytes(audioSpecificConfig, 0, audioSpecificConfig.length); + Pair audioParams = CodecSpecificDataUtil.parseAacAudioSpecificConfig( + audioSpecificConfig); + Format format = Format.createAudioSampleFormat(null, MimeTypes.AUDIO_AAC, null, + Format.NO_VALUE, Format.NO_VALUE, audioParams.second, audioParams.first, + Collections.singletonList(audioSpecificConfig), null, 0, null); + output.format(format); + hasOutputFormat = true; + return false; + } else if (audioFormat != AUDIO_FORMAT_AAC || packetType == AAC_PACKET_TYPE_AAC_RAW) { + int sampleSize = data.bytesLeft(); + output.sampleData(data, sampleSize); + output.sampleMetadata(timeUs, C.BUFFER_FLAG_KEY_FRAME, sampleSize, 0, null); + return true; + } else { + return false; + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/FlvExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/FlvExtractor.java new file mode 100644 index 0000000000..a7438b190f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/FlvExtractor.java @@ -0,0 +1,308 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.flv; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Extracts data from the FLV container format. + */ +public final class FlvExtractor implements Extractor { + + /** Factory for {@link FlvExtractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new FlvExtractor()}; + + /** Extractor states. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + STATE_READING_FLV_HEADER, + STATE_SKIPPING_TO_TAG_HEADER, + STATE_READING_TAG_HEADER, + STATE_READING_TAG_DATA + }) + private @interface States {} + + private static final int STATE_READING_FLV_HEADER = 1; + private static final int STATE_SKIPPING_TO_TAG_HEADER = 2; + private static final int STATE_READING_TAG_HEADER = 3; + private static final int STATE_READING_TAG_DATA = 4; + + // Header sizes. + private static final int FLV_HEADER_SIZE = 9; + private static final int FLV_TAG_HEADER_SIZE = 11; + + // Tag types. + private static final int TAG_TYPE_AUDIO = 8; + private static final int TAG_TYPE_VIDEO = 9; + private static final int TAG_TYPE_SCRIPT_DATA = 18; + + // FLV container identifier. + private static final int FLV_TAG = 0x00464c56; + + private final ParsableByteArray scratch; + private final ParsableByteArray headerBuffer; + private final ParsableByteArray tagHeaderBuffer; + private final ParsableByteArray tagData; + private final ScriptTagPayloadReader metadataReader; + + private ExtractorOutput extractorOutput; + private @States int state; + private boolean outputFirstSample; + private long mediaTagTimestampOffsetUs; + private int bytesToNextTagHeader; + private int tagType; + private int tagDataSize; + private long tagTimestampUs; + private boolean outputSeekMap; + private AudioTagPayloadReader audioReader; + private VideoTagPayloadReader videoReader; + + public FlvExtractor() { + scratch = new ParsableByteArray(4); + headerBuffer = new ParsableByteArray(FLV_HEADER_SIZE); + tagHeaderBuffer = new ParsableByteArray(FLV_TAG_HEADER_SIZE); + tagData = new ParsableByteArray(); + metadataReader = new ScriptTagPayloadReader(); + state = STATE_READING_FLV_HEADER; + } + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + // Check if file starts with "FLV" tag + input.peekFully(scratch.data, 0, 3); + scratch.setPosition(0); + if (scratch.readUnsignedInt24() != FLV_TAG) { + return false; + } + + // Checking reserved flags are set to 0 + input.peekFully(scratch.data, 0, 2); + scratch.setPosition(0); + if ((scratch.readUnsignedShort() & 0xFA) != 0) { + return false; + } + + // Read data offset + input.peekFully(scratch.data, 0, 4); + scratch.setPosition(0); + int dataOffset = scratch.readInt(); + + input.resetPeekPosition(); + input.advancePeekPosition(dataOffset); + + // Checking first "previous tag size" is set to 0 + input.peekFully(scratch.data, 0, 4); + scratch.setPosition(0); + + return scratch.readInt() == 0; + } + + @Override + public void init(ExtractorOutput output) { + this.extractorOutput = output; + } + + @Override + public void seek(long position, long timeUs) { + state = STATE_READING_FLV_HEADER; + outputFirstSample = false; + bytesToNextTagHeader = 0; + } + + @Override + public void release() { + // Do nothing + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) throws IOException, + InterruptedException { + while (true) { + switch (state) { + case STATE_READING_FLV_HEADER: + if (!readFlvHeader(input)) { + return RESULT_END_OF_INPUT; + } + break; + case STATE_SKIPPING_TO_TAG_HEADER: + skipToTagHeader(input); + break; + case STATE_READING_TAG_HEADER: + if (!readTagHeader(input)) { + return RESULT_END_OF_INPUT; + } + break; + case STATE_READING_TAG_DATA: + if (readTagData(input)) { + return RESULT_CONTINUE; + } + break; + default: + // Never happens. + throw new IllegalStateException(); + } + } + } + + /** + * Reads an FLV container header from the provided {@link ExtractorInput}. + * + * @param input The {@link ExtractorInput} from which to read. + * @return True if header was read successfully. False if the end of stream was reached. + * @throws IOException If an error occurred reading or parsing data from the source. + * @throws InterruptedException If the thread was interrupted. + */ + private boolean readFlvHeader(ExtractorInput input) throws IOException, InterruptedException { + if (!input.readFully(headerBuffer.data, 0, FLV_HEADER_SIZE, true)) { + // We've reached the end of the stream. + return false; + } + + headerBuffer.setPosition(0); + headerBuffer.skipBytes(4); + int flags = headerBuffer.readUnsignedByte(); + boolean hasAudio = (flags & 0x04) != 0; + boolean hasVideo = (flags & 0x01) != 0; + if (hasAudio && audioReader == null) { + audioReader = new AudioTagPayloadReader( + extractorOutput.track(TAG_TYPE_AUDIO, C.TRACK_TYPE_AUDIO)); + } + if (hasVideo && videoReader == null) { + videoReader = new VideoTagPayloadReader( + extractorOutput.track(TAG_TYPE_VIDEO, C.TRACK_TYPE_VIDEO)); + } + extractorOutput.endTracks(); + + // We need to skip any additional content in the FLV header, plus the 4 byte previous tag size. + bytesToNextTagHeader = headerBuffer.readInt() - FLV_HEADER_SIZE + 4; + state = STATE_SKIPPING_TO_TAG_HEADER; + return true; + } + + /** + * Skips over data to reach the next tag header. + * + * @param input The {@link ExtractorInput} from which to read. + * @throws IOException If an error occurred skipping data from the source. + * @throws InterruptedException If the thread was interrupted. + */ + private void skipToTagHeader(ExtractorInput input) throws IOException, InterruptedException { + input.skipFully(bytesToNextTagHeader); + bytesToNextTagHeader = 0; + state = STATE_READING_TAG_HEADER; + } + + /** + * Reads a tag header from the provided {@link ExtractorInput}. + * + * @param input The {@link ExtractorInput} from which to read. + * @return True if tag header was read successfully. Otherwise, false. + * @throws IOException If an error occurred reading or parsing data from the source. + * @throws InterruptedException If the thread was interrupted. + */ + private boolean readTagHeader(ExtractorInput input) throws IOException, InterruptedException { + if (!input.readFully(tagHeaderBuffer.data, 0, FLV_TAG_HEADER_SIZE, true)) { + // We've reached the end of the stream. + return false; + } + + tagHeaderBuffer.setPosition(0); + tagType = tagHeaderBuffer.readUnsignedByte(); + tagDataSize = tagHeaderBuffer.readUnsignedInt24(); + tagTimestampUs = tagHeaderBuffer.readUnsignedInt24(); + tagTimestampUs = ((tagHeaderBuffer.readUnsignedByte() << 24) | tagTimestampUs) * 1000L; + tagHeaderBuffer.skipBytes(3); // streamId + state = STATE_READING_TAG_DATA; + return true; + } + + /** + * Reads the body of a tag from the provided {@link ExtractorInput}. + * + * @param input The {@link ExtractorInput} from which to read. + * @return True if the data was consumed by a reader. False if it was skipped. + * @throws IOException If an error occurred reading or parsing data from the source. + * @throws InterruptedException If the thread was interrupted. + */ + private boolean readTagData(ExtractorInput input) throws IOException, InterruptedException { + boolean wasConsumed = true; + boolean wasSampleOutput = false; + long timestampUs = getCurrentTimestampUs(); + if (tagType == TAG_TYPE_AUDIO && audioReader != null) { + ensureReadyForMediaOutput(); + wasSampleOutput = audioReader.consume(prepareTagData(input), timestampUs); + } else if (tagType == TAG_TYPE_VIDEO && videoReader != null) { + ensureReadyForMediaOutput(); + wasSampleOutput = videoReader.consume(prepareTagData(input), timestampUs); + } else if (tagType == TAG_TYPE_SCRIPT_DATA && !outputSeekMap) { + wasSampleOutput = metadataReader.consume(prepareTagData(input), timestampUs); + long durationUs = metadataReader.getDurationUs(); + if (durationUs != C.TIME_UNSET) { + extractorOutput.seekMap(new SeekMap.Unseekable(durationUs)); + outputSeekMap = true; + } + } else { + input.skipFully(tagDataSize); + wasConsumed = false; + } + if (!outputFirstSample && wasSampleOutput) { + outputFirstSample = true; + mediaTagTimestampOffsetUs = + metadataReader.getDurationUs() == C.TIME_UNSET ? -tagTimestampUs : 0; + } + bytesToNextTagHeader = 4; // There's a 4 byte previous tag size before the next header. + state = STATE_SKIPPING_TO_TAG_HEADER; + return wasConsumed; + } + + private ParsableByteArray prepareTagData(ExtractorInput input) throws IOException, + InterruptedException { + if (tagDataSize > tagData.capacity()) { + tagData.reset(new byte[Math.max(tagData.capacity() * 2, tagDataSize)], 0); + } else { + tagData.setPosition(0); + } + tagData.setLimit(tagDataSize); + input.readFully(tagData.data, 0, tagDataSize); + return tagData; + } + + private void ensureReadyForMediaOutput() { + if (!outputSeekMap) { + extractorOutput.seekMap(new SeekMap.Unseekable(C.TIME_UNSET)); + outputSeekMap = true; + } + } + + private long getCurrentTimestampUs() { + return outputFirstSample + ? (mediaTagTimestampOffsetUs + tagTimestampUs) + : (metadataReader.getDurationUs() == C.TIME_UNSET ? 0 : tagTimestampUs); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/ScriptTagPayloadReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/ScriptTagPayloadReader.java new file mode 100644 index 0000000000..1494bf1c2e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/ScriptTagPayloadReader.java @@ -0,0 +1,227 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.flv; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DummyTrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.ArrayList; +import java.util.Date; +import java.util.HashMap; +import java.util.Map; + +/** + * Parses Script Data tags from an FLV stream and extracts metadata information. + */ +/* package */ final class ScriptTagPayloadReader extends TagPayloadReader { + + private static final String NAME_METADATA = "onMetaData"; + private static final String KEY_DURATION = "duration"; + + // AMF object types + private static final int AMF_TYPE_NUMBER = 0; + private static final int AMF_TYPE_BOOLEAN = 1; + private static final int AMF_TYPE_STRING = 2; + private static final int AMF_TYPE_OBJECT = 3; + private static final int AMF_TYPE_ECMA_ARRAY = 8; + private static final int AMF_TYPE_END_MARKER = 9; + private static final int AMF_TYPE_STRICT_ARRAY = 10; + private static final int AMF_TYPE_DATE = 11; + + private long durationUs; + + public ScriptTagPayloadReader() { + super(new DummyTrackOutput()); + durationUs = C.TIME_UNSET; + } + + public long getDurationUs() { + return durationUs; + } + + @Override + public void seek() { + // Do nothing. + } + + @Override + protected boolean parseHeader(ParsableByteArray data) { + return true; + } + + @Override + protected boolean parsePayload(ParsableByteArray data, long timeUs) throws ParserException { + int nameType = readAmfType(data); + if (nameType != AMF_TYPE_STRING) { + // Should never happen. + throw new ParserException(); + } + String name = readAmfString(data); + if (!NAME_METADATA.equals(name)) { + // We're only interested in metadata. + return false; + } + int type = readAmfType(data); + if (type != AMF_TYPE_ECMA_ARRAY) { + // We're not interested in this metadata. + return false; + } + // Set the duration to the value contained in the metadata, if present. + Map metadata = readAmfEcmaArray(data); + if (metadata.containsKey(KEY_DURATION)) { + double durationSeconds = (double) metadata.get(KEY_DURATION); + if (durationSeconds > 0.0) { + durationUs = (long) (durationSeconds * C.MICROS_PER_SECOND); + } + } + return false; + } + + private static int readAmfType(ParsableByteArray data) { + return data.readUnsignedByte(); + } + + /** + * Read a boolean from an AMF encoded buffer. + * + * @param data The buffer from which to read. + * @return The value read from the buffer. + */ + private static Boolean readAmfBoolean(ParsableByteArray data) { + return data.readUnsignedByte() == 1; + } + + /** + * Read a double number from an AMF encoded buffer. + * + * @param data The buffer from which to read. + * @return The value read from the buffer. + */ + private static Double readAmfDouble(ParsableByteArray data) { + return Double.longBitsToDouble(data.readLong()); + } + + /** + * Read a string from an AMF encoded buffer. + * + * @param data The buffer from which to read. + * @return The value read from the buffer. + */ + private static String readAmfString(ParsableByteArray data) { + int size = data.readUnsignedShort(); + int position = data.getPosition(); + data.skipBytes(size); + return new String(data.data, position, size); + } + + /** + * Read an array from an AMF encoded buffer. + * + * @param data The buffer from which to read. + * @return The value read from the buffer. + */ + private static ArrayList readAmfStrictArray(ParsableByteArray data) { + int count = data.readUnsignedIntToInt(); + ArrayList list = new ArrayList<>(count); + for (int i = 0; i < count; i++) { + int type = readAmfType(data); + Object value = readAmfData(data, type); + if (value != null) { + list.add(value); + } + } + return list; + } + + /** + * Read an object from an AMF encoded buffer. + * + * @param data The buffer from which to read. + * @return The value read from the buffer. + */ + private static HashMap readAmfObject(ParsableByteArray data) { + HashMap array = new HashMap<>(); + while (true) { + String key = readAmfString(data); + int type = readAmfType(data); + if (type == AMF_TYPE_END_MARKER) { + break; + } + Object value = readAmfData(data, type); + if (value != null) { + array.put(key, value); + } + } + return array; + } + + /** + * Read an ECMA array from an AMF encoded buffer. + * + * @param data The buffer from which to read. + * @return The value read from the buffer. + */ + private static HashMap readAmfEcmaArray(ParsableByteArray data) { + int count = data.readUnsignedIntToInt(); + HashMap array = new HashMap<>(count); + for (int i = 0; i < count; i++) { + String key = readAmfString(data); + int type = readAmfType(data); + Object value = readAmfData(data, type); + if (value != null) { + array.put(key, value); + } + } + return array; + } + + /** + * Read a date from an AMF encoded buffer. + * + * @param data The buffer from which to read. + * @return The value read from the buffer. + */ + private static Date readAmfDate(ParsableByteArray data) { + Date date = new Date((long) readAmfDouble(data).doubleValue()); + data.skipBytes(2); // Skip reserved bytes. + return date; + } + + @Nullable + private static Object readAmfData(ParsableByteArray data, int type) { + switch (type) { + case AMF_TYPE_NUMBER: + return readAmfDouble(data); + case AMF_TYPE_BOOLEAN: + return readAmfBoolean(data); + case AMF_TYPE_STRING: + return readAmfString(data); + case AMF_TYPE_OBJECT: + return readAmfObject(data); + case AMF_TYPE_ECMA_ARRAY: + return readAmfEcmaArray(data); + case AMF_TYPE_STRICT_ARRAY: + return readAmfStrictArray(data); + case AMF_TYPE_DATE: + return readAmfDate(data); + default: + // We don't log a warning because there are types that we knowingly don't support. + return null; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/TagPayloadReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/TagPayloadReader.java new file mode 100644 index 0000000000..3f8b51244a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/TagPayloadReader.java @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.flv; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; + +/** + * Extracts individual samples from FLV tags, preserving original order. + */ +/* package */ abstract class TagPayloadReader { + + /** + * Thrown when the format is not supported. + */ + public static final class UnsupportedFormatException extends ParserException { + + public UnsupportedFormatException(String msg) { + super(msg); + } + + } + + protected final TrackOutput output; + + /** + * @param output A {@link TrackOutput} to which samples should be written. + */ + protected TagPayloadReader(TrackOutput output) { + this.output = output; + } + + /** + * Notifies the reader that a seek has occurred. + *

+ * Following a call to this method, the data passed to the next invocation of + * {@link #consume(ParsableByteArray, long)} will not be a continuation of the data that + * was previously passed. Hence the reader should reset any internal state. + */ + public abstract void seek(); + + /** + * Consumes payload data. + * + * @param data The payload data to consume. + * @param timeUs The timestamp associated with the payload. + * @return Whether a sample was output. + * @throws ParserException If an error occurs parsing the data. + */ + public final boolean consume(ParsableByteArray data, long timeUs) throws ParserException { + return parseHeader(data) && parsePayload(data, timeUs); + } + + /** + * Parses tag header. + * + * @param data Buffer where the tag header is stored. + * @return Whether the header was parsed successfully. + * @throws ParserException If an error occurs parsing the header. + */ + protected abstract boolean parseHeader(ParsableByteArray data) throws ParserException; + + /** + * Parses tag payload. + * + * @param data Buffer where tag payload is stored. + * @param timeUs Time position of the frame. + * @return Whether a sample was output. + * @throws ParserException If an error occurs parsing the payload. + */ + protected abstract boolean parsePayload(ParsableByteArray data, long timeUs) + throws ParserException; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/VideoTagPayloadReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/VideoTagPayloadReader.java new file mode 100644 index 0000000000..6ed5206144 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/flv/VideoTagPayloadReader.java @@ -0,0 +1,141 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.flv; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.AvcConfig; + +/** + * Parses video tags from an FLV stream and extracts H.264 nal units. + */ +/* package */ final class VideoTagPayloadReader extends TagPayloadReader { + + // Video codec. + private static final int VIDEO_CODEC_AVC = 7; + + // Frame types. + private static final int VIDEO_FRAME_KEYFRAME = 1; + private static final int VIDEO_FRAME_VIDEO_INFO = 5; + + // Packet types. + private static final int AVC_PACKET_TYPE_SEQUENCE_HEADER = 0; + private static final int AVC_PACKET_TYPE_AVC_NALU = 1; + + // Temporary arrays. + private final ParsableByteArray nalStartCode; + private final ParsableByteArray nalLength; + private int nalUnitLengthFieldLength; + + // State variables. + private boolean hasOutputFormat; + private boolean hasOutputKeyframe; + private int frameType; + + /** + * @param output A {@link TrackOutput} to which samples should be written. + */ + public VideoTagPayloadReader(TrackOutput output) { + super(output); + nalStartCode = new ParsableByteArray(NalUnitUtil.NAL_START_CODE); + nalLength = new ParsableByteArray(4); + } + + @Override + public void seek() { + hasOutputKeyframe = false; + } + + @Override + protected boolean parseHeader(ParsableByteArray data) throws UnsupportedFormatException { + int header = data.readUnsignedByte(); + int frameType = (header >> 4) & 0x0F; + int videoCodec = (header & 0x0F); + // Support just H.264 encoded content. + if (videoCodec != VIDEO_CODEC_AVC) { + throw new UnsupportedFormatException("Video format not supported: " + videoCodec); + } + this.frameType = frameType; + return (frameType != VIDEO_FRAME_VIDEO_INFO); + } + + @Override + protected boolean parsePayload(ParsableByteArray data, long timeUs) throws ParserException { + int packetType = data.readUnsignedByte(); + int compositionTimeMs = data.readInt24(); + + timeUs += compositionTimeMs * 1000L; + // Parse avc sequence header in case this was not done before. + if (packetType == AVC_PACKET_TYPE_SEQUENCE_HEADER && !hasOutputFormat) { + ParsableByteArray videoSequence = new ParsableByteArray(new byte[data.bytesLeft()]); + data.readBytes(videoSequence.data, 0, data.bytesLeft()); + AvcConfig avcConfig = AvcConfig.parse(videoSequence); + nalUnitLengthFieldLength = avcConfig.nalUnitLengthFieldLength; + // Construct and output the format. + Format format = Format.createVideoSampleFormat(null, MimeTypes.VIDEO_H264, null, + Format.NO_VALUE, Format.NO_VALUE, avcConfig.width, avcConfig.height, Format.NO_VALUE, + avcConfig.initializationData, Format.NO_VALUE, avcConfig.pixelWidthAspectRatio, null); + output.format(format); + hasOutputFormat = true; + return false; + } else if (packetType == AVC_PACKET_TYPE_AVC_NALU && hasOutputFormat) { + boolean isKeyframe = frameType == VIDEO_FRAME_KEYFRAME; + if (!hasOutputKeyframe && !isKeyframe) { + return false; + } + // TODO: Deduplicate with Mp4Extractor. + // Zero the top three bytes of the array that we'll use to decode nal unit lengths, in case + // they're only 1 or 2 bytes long. + byte[] nalLengthData = nalLength.data; + nalLengthData[0] = 0; + nalLengthData[1] = 0; + nalLengthData[2] = 0; + int nalUnitLengthFieldLengthDiff = 4 - nalUnitLengthFieldLength; + // NAL units are length delimited, but the decoder requires start code delimited units. + // Loop until we've written the sample to the track output, replacing length delimiters with + // start codes as we encounter them. + int bytesWritten = 0; + int bytesToWrite; + while (data.bytesLeft() > 0) { + // Read the NAL length so that we know where we find the next one. + data.readBytes(nalLength.data, nalUnitLengthFieldLengthDiff, nalUnitLengthFieldLength); + nalLength.setPosition(0); + bytesToWrite = nalLength.readUnsignedIntToInt(); + + // Write a start code for the current NAL unit. + nalStartCode.setPosition(0); + output.sampleData(nalStartCode, 4); + bytesWritten += 4; + + // Write the payload of the NAL unit. + output.sampleData(data, bytesToWrite); + bytesWritten += bytesToWrite; + } + output.sampleMetadata( + timeUs, isKeyframe ? C.BUFFER_FLAG_KEY_FRAME : 0, bytesWritten, 0, null); + hasOutputKeyframe = true; + return true; + } else { + return false; + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/DefaultEbmlReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/DefaultEbmlReader.java new file mode 100644 index 0000000000..b4e160fa74 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/DefaultEbmlReader.java @@ -0,0 +1,260 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mkv; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.EOFException; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.ArrayDeque; + +/** + * Default implementation of {@link EbmlReader}. + */ +/* package */ final class DefaultEbmlReader implements EbmlReader { + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ELEMENT_STATE_READ_ID, ELEMENT_STATE_READ_CONTENT_SIZE, ELEMENT_STATE_READ_CONTENT}) + private @interface ElementState {} + + private static final int ELEMENT_STATE_READ_ID = 0; + private static final int ELEMENT_STATE_READ_CONTENT_SIZE = 1; + private static final int ELEMENT_STATE_READ_CONTENT = 2; + + private static final int MAX_ID_BYTES = 4; + private static final int MAX_LENGTH_BYTES = 8; + + private static final int MAX_INTEGER_ELEMENT_SIZE_BYTES = 8; + private static final int VALID_FLOAT32_ELEMENT_SIZE_BYTES = 4; + private static final int VALID_FLOAT64_ELEMENT_SIZE_BYTES = 8; + + private final byte[] scratch; + private final ArrayDeque masterElementsStack; + private final VarintReader varintReader; + + private EbmlProcessor processor; + private @ElementState int elementState; + private int elementId; + private long elementContentSize; + + public DefaultEbmlReader() { + scratch = new byte[8]; + masterElementsStack = new ArrayDeque<>(); + varintReader = new VarintReader(); + } + + @Override + public void init(EbmlProcessor processor) { + this.processor = processor; + } + + @Override + public void reset() { + elementState = ELEMENT_STATE_READ_ID; + masterElementsStack.clear(); + varintReader.reset(); + } + + @Override + public boolean read(ExtractorInput input) throws IOException, InterruptedException { + Assertions.checkNotNull(processor); + while (true) { + if (!masterElementsStack.isEmpty() + && input.getPosition() >= masterElementsStack.peek().elementEndPosition) { + processor.endMasterElement(masterElementsStack.pop().elementId); + return true; + } + + if (elementState == ELEMENT_STATE_READ_ID) { + long result = varintReader.readUnsignedVarint(input, true, false, MAX_ID_BYTES); + if (result == C.RESULT_MAX_LENGTH_EXCEEDED) { + result = maybeResyncToNextLevel1Element(input); + } + if (result == C.RESULT_END_OF_INPUT) { + return false; + } + // Element IDs are at most 4 bytes, so we can cast to integers. + elementId = (int) result; + elementState = ELEMENT_STATE_READ_CONTENT_SIZE; + } + + if (elementState == ELEMENT_STATE_READ_CONTENT_SIZE) { + elementContentSize = varintReader.readUnsignedVarint(input, false, true, MAX_LENGTH_BYTES); + elementState = ELEMENT_STATE_READ_CONTENT; + } + + @EbmlProcessor.ElementType int type = processor.getElementType(elementId); + switch (type) { + case EbmlProcessor.ELEMENT_TYPE_MASTER: + long elementContentPosition = input.getPosition(); + long elementEndPosition = elementContentPosition + elementContentSize; + masterElementsStack.push(new MasterElement(elementId, elementEndPosition)); + processor.startMasterElement(elementId, elementContentPosition, elementContentSize); + elementState = ELEMENT_STATE_READ_ID; + return true; + case EbmlProcessor.ELEMENT_TYPE_UNSIGNED_INT: + if (elementContentSize > MAX_INTEGER_ELEMENT_SIZE_BYTES) { + throw new ParserException("Invalid integer size: " + elementContentSize); + } + processor.integerElement(elementId, readInteger(input, (int) elementContentSize)); + elementState = ELEMENT_STATE_READ_ID; + return true; + case EbmlProcessor.ELEMENT_TYPE_FLOAT: + if (elementContentSize != VALID_FLOAT32_ELEMENT_SIZE_BYTES + && elementContentSize != VALID_FLOAT64_ELEMENT_SIZE_BYTES) { + throw new ParserException("Invalid float size: " + elementContentSize); + } + processor.floatElement(elementId, readFloat(input, (int) elementContentSize)); + elementState = ELEMENT_STATE_READ_ID; + return true; + case EbmlProcessor.ELEMENT_TYPE_STRING: + if (elementContentSize > Integer.MAX_VALUE) { + throw new ParserException("String element size: " + elementContentSize); + } + processor.stringElement(elementId, readString(input, (int) elementContentSize)); + elementState = ELEMENT_STATE_READ_ID; + return true; + case EbmlProcessor.ELEMENT_TYPE_BINARY: + processor.binaryElement(elementId, (int) elementContentSize, input); + elementState = ELEMENT_STATE_READ_ID; + return true; + case EbmlProcessor.ELEMENT_TYPE_UNKNOWN: + input.skipFully((int) elementContentSize); + elementState = ELEMENT_STATE_READ_ID; + break; + default: + throw new ParserException("Invalid element type " + type); + } + } + } + + /** + * Does a byte by byte search to try and find the next level 1 element. This method is called if + * some invalid data is encountered in the parser. + * + * @param input The {@link ExtractorInput} from which data has to be read. + * @return id of the next level 1 element that has been found. + * @throws EOFException If the end of input was encountered when searching for the next level 1 + * element. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + private long maybeResyncToNextLevel1Element(ExtractorInput input) throws IOException, + InterruptedException { + input.resetPeekPosition(); + while (true) { + input.peekFully(scratch, 0, MAX_ID_BYTES); + int varintLength = VarintReader.parseUnsignedVarintLength(scratch[0]); + if (varintLength != C.LENGTH_UNSET && varintLength <= MAX_ID_BYTES) { + int potentialId = (int) VarintReader.assembleVarint(scratch, varintLength, false); + if (processor.isLevel1Element(potentialId)) { + input.skipFully(varintLength); + return potentialId; + } + } + input.skipFully(1); + } + } + + /** + * Reads and returns an integer of length {@code byteLength} from the {@link ExtractorInput}. + * + * @param input The {@link ExtractorInput} from which to read. + * @param byteLength The length of the integer being read. + * @return The read integer value. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + private long readInteger(ExtractorInput input, int byteLength) + throws IOException, InterruptedException { + input.readFully(scratch, 0, byteLength); + long value = 0; + for (int i = 0; i < byteLength; i++) { + value = (value << 8) | (scratch[i] & 0xFF); + } + return value; + } + + /** + * Reads and returns a float of length {@code byteLength} from the {@link ExtractorInput}. + * + * @param input The {@link ExtractorInput} from which to read. + * @param byteLength The length of the float being read. + * @return The read float value. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + private double readFloat(ExtractorInput input, int byteLength) + throws IOException, InterruptedException { + long integerValue = readInteger(input, byteLength); + double floatValue; + if (byteLength == VALID_FLOAT32_ELEMENT_SIZE_BYTES) { + floatValue = Float.intBitsToFloat((int) integerValue); + } else { + floatValue = Double.longBitsToDouble(integerValue); + } + return floatValue; + } + + /** + * Reads a string of length {@code byteLength} from the {@link ExtractorInput}. Zero padding is + * removed, so the returned string may be shorter than {@code byteLength}. + * + * @param input The {@link ExtractorInput} from which to read. + * @param byteLength The length of the string being read, including zero padding. + * @return The read string value. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + private String readString(ExtractorInput input, int byteLength) + throws IOException, InterruptedException { + if (byteLength == 0) { + return ""; + } + byte[] stringBytes = new byte[byteLength]; + input.readFully(stringBytes, 0, byteLength); + // Remove zero padding. + int trimmedLength = byteLength; + while (trimmedLength > 0 && stringBytes[trimmedLength - 1] == 0) { + trimmedLength--; + } + return new String(stringBytes, 0, trimmedLength); + } + + /** + * Used in {@link #masterElementsStack} to track when the current master element ends, so that + * {@link EbmlProcessor#endMasterElement(int)} can be called. + */ + private static final class MasterElement { + + private final int elementId; + private final long elementEndPosition; + + private MasterElement(int elementId, long elementEndPosition) { + this.elementId = elementId; + this.elementEndPosition = elementEndPosition; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/EbmlProcessor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/EbmlProcessor.java new file mode 100644 index 0000000000..188ced0554 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/EbmlProcessor.java @@ -0,0 +1,150 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mkv; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** Defines EBML element IDs/types and processes events. */ +public interface EbmlProcessor { + + /** + * EBML element types. One of {@link #ELEMENT_TYPE_UNKNOWN}, {@link #ELEMENT_TYPE_MASTER}, {@link + * #ELEMENT_TYPE_UNSIGNED_INT}, {@link #ELEMENT_TYPE_STRING}, {@link #ELEMENT_TYPE_BINARY} or + * {@link #ELEMENT_TYPE_FLOAT}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + ELEMENT_TYPE_UNKNOWN, + ELEMENT_TYPE_MASTER, + ELEMENT_TYPE_UNSIGNED_INT, + ELEMENT_TYPE_STRING, + ELEMENT_TYPE_BINARY, + ELEMENT_TYPE_FLOAT + }) + @interface ElementType {} + /** Type for unknown elements. */ + int ELEMENT_TYPE_UNKNOWN = 0; + /** Type for elements that contain child elements. */ + int ELEMENT_TYPE_MASTER = 1; + /** Type for integer value elements of up to 8 bytes. */ + int ELEMENT_TYPE_UNSIGNED_INT = 2; + /** Type for string elements. */ + int ELEMENT_TYPE_STRING = 3; + /** Type for binary elements. */ + int ELEMENT_TYPE_BINARY = 4; + /** Type for IEEE floating point value elements of either 4 or 8 bytes. */ + int ELEMENT_TYPE_FLOAT = 5; + + /** + * Maps an element ID to a corresponding type. + * + *

If {@link #ELEMENT_TYPE_UNKNOWN} is returned then the element is skipped. Note that all + * children of a skipped element are also skipped. + * + * @param id The element ID to map. + * @return One of {@link #ELEMENT_TYPE_UNKNOWN}, {@link #ELEMENT_TYPE_MASTER}, {@link + * #ELEMENT_TYPE_UNSIGNED_INT}, {@link #ELEMENT_TYPE_STRING}, {@link #ELEMENT_TYPE_BINARY} and + * {@link #ELEMENT_TYPE_FLOAT}. + */ + @ElementType + int getElementType(int id); + + /** + * Checks if the given id is that of a level 1 element. + * + * @param id The element ID. + * @return Whether the given id is that of a level 1 element. + */ + boolean isLevel1Element(int id); + + /** + * Called when the start of a master element is encountered. + *

+ * Following events should be considered as taking place within this element until a matching call + * to {@link #endMasterElement(int)} is made. + *

+ * Note that it is possible for another master element of the same element ID to be nested within + * itself. + * + * @param id The element ID. + * @param contentPosition The position of the start of the element's content in the stream. + * @param contentSize The size of the element's content in bytes. + * @throws ParserException If a parsing error occurs. + */ + void startMasterElement(int id, long contentPosition, long contentSize) throws ParserException; + + /** + * Called when the end of a master element is encountered. + * + * @param id The element ID. + * @throws ParserException If a parsing error occurs. + */ + void endMasterElement(int id) throws ParserException; + + /** + * Called when an integer element is encountered. + * + * @param id The element ID. + * @param value The integer value that the element contains. + * @throws ParserException If a parsing error occurs. + */ + void integerElement(int id, long value) throws ParserException; + + /** + * Called when a float element is encountered. + * + * @param id The element ID. + * @param value The float value that the element contains + * @throws ParserException If a parsing error occurs. + */ + void floatElement(int id, double value) throws ParserException; + + /** + * Called when a string element is encountered. + * + * @param id The element ID. + * @param value The string value that the element contains. + * @throws ParserException If a parsing error occurs. + */ + void stringElement(int id, String value) throws ParserException; + + /** + * Called when a binary element is encountered. + *

+ * The element header (containing the element ID and content size) will already have been read. + * Implementations are required to consume the whole remainder of the element, which is + * {@code contentSize} bytes in length, before returning. Implementations are permitted to fail + * (by throwing an exception) having partially consumed the data, however if they do this, they + * must consume the remainder of the content when called again. + * + * @param id The element ID. + * @param contentsSize The element's content size. + * @param input The {@link ExtractorInput} from which data should be read. + * @throws ParserException If a parsing error occurs. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + void binaryElement(int id, int contentsSize, ExtractorInput input) + throws IOException, InterruptedException; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/EbmlReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/EbmlReader.java new file mode 100644 index 0000000000..1416a9087e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/EbmlReader.java @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mkv; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import java.io.IOException; + +/** + * Event-driven EBML reader that delivers events to an {@link EbmlProcessor}. + * + *

EBML can be summarized as a binary XML format somewhat similar to Protocol Buffers. It was + * originally designed for the Matroska container format. More information about EBML and Matroska + * is available here. + */ +/* package */ interface EbmlReader { + + /** + * Initializes the extractor with an {@link EbmlProcessor}. + * + * @param processor An {@link EbmlProcessor} to process events. + */ + void init(EbmlProcessor processor); + + /** + * Resets the state of the reader. + *

+ * Subsequent calls to {@link #read(ExtractorInput)} will start reading a new EBML structure + * from scratch. + */ + void reset(); + + /** + * Reads from an {@link ExtractorInput}, invoking an event callback if possible. + * + * @param input The {@link ExtractorInput} from which data should be read. + * @return True if data can continue to be read. False if the end of the input was encountered. + * @throws ParserException If parsing fails. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + boolean read(ExtractorInput input) throws IOException, InterruptedException; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/MatroskaExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/MatroskaExtractor.java new file mode 100644 index 0000000000..d9587cd27e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/MatroskaExtractor.java @@ -0,0 +1,2331 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mkv; + +import android.util.Pair; +import android.util.SparseArray; +import androidx.annotation.CallSuper; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac3Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData.SchemeData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ChunkIndex; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.MpegAudioHeader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.LongArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.AvcConfig; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.ColorInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.HevcConfig; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; +import java.util.Locale; +import java.util.UUID; + +/** Extracts data from the Matroska and WebM container formats. */ +public class MatroskaExtractor implements Extractor { + + /** Factory for {@link MatroskaExtractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new MatroskaExtractor()}; + + /** + * Flags controlling the behavior of the extractor. Possible flag value is {@link + * #FLAG_DISABLE_SEEK_FOR_CUES}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {FLAG_DISABLE_SEEK_FOR_CUES}) + public @interface Flags {} + /** + * Flag to disable seeking for cues. + *

+ * Normally (i.e. when this flag is not set) the extractor will seek to the cues element if its + * position is specified in the seek head and if it's after the first cluster. Setting this flag + * disables seeking to the cues element. If the cues element is after the first cluster then the + * media is treated as being unseekable. + */ + public static final int FLAG_DISABLE_SEEK_FOR_CUES = 1; + + private static final String TAG = "MatroskaExtractor"; + + private static final int UNSET_ENTRY_ID = -1; + + private static final int BLOCK_STATE_START = 0; + private static final int BLOCK_STATE_HEADER = 1; + private static final int BLOCK_STATE_DATA = 2; + + private static final String DOC_TYPE_MATROSKA = "matroska"; + private static final String DOC_TYPE_WEBM = "webm"; + private static final String CODEC_ID_VP8 = "V_VP8"; + private static final String CODEC_ID_VP9 = "V_VP9"; + private static final String CODEC_ID_AV1 = "V_AV1"; + private static final String CODEC_ID_MPEG2 = "V_MPEG2"; + private static final String CODEC_ID_MPEG4_SP = "V_MPEG4/ISO/SP"; + private static final String CODEC_ID_MPEG4_ASP = "V_MPEG4/ISO/ASP"; + private static final String CODEC_ID_MPEG4_AP = "V_MPEG4/ISO/AP"; + private static final String CODEC_ID_H264 = "V_MPEG4/ISO/AVC"; + private static final String CODEC_ID_H265 = "V_MPEGH/ISO/HEVC"; + private static final String CODEC_ID_FOURCC = "V_MS/VFW/FOURCC"; + private static final String CODEC_ID_THEORA = "V_THEORA"; + private static final String CODEC_ID_VORBIS = "A_VORBIS"; + private static final String CODEC_ID_OPUS = "A_OPUS"; + private static final String CODEC_ID_AAC = "A_AAC"; + private static final String CODEC_ID_MP2 = "A_MPEG/L2"; + private static final String CODEC_ID_MP3 = "A_MPEG/L3"; + private static final String CODEC_ID_AC3 = "A_AC3"; + private static final String CODEC_ID_E_AC3 = "A_EAC3"; + private static final String CODEC_ID_TRUEHD = "A_TRUEHD"; + private static final String CODEC_ID_DTS = "A_DTS"; + private static final String CODEC_ID_DTS_EXPRESS = "A_DTS/EXPRESS"; + private static final String CODEC_ID_DTS_LOSSLESS = "A_DTS/LOSSLESS"; + private static final String CODEC_ID_FLAC = "A_FLAC"; + private static final String CODEC_ID_ACM = "A_MS/ACM"; + private static final String CODEC_ID_PCM_INT_LIT = "A_PCM/INT/LIT"; + private static final String CODEC_ID_SUBRIP = "S_TEXT/UTF8"; + private static final String CODEC_ID_ASS = "S_TEXT/ASS"; + private static final String CODEC_ID_VOBSUB = "S_VOBSUB"; + private static final String CODEC_ID_PGS = "S_HDMV/PGS"; + private static final String CODEC_ID_DVBSUB = "S_DVBSUB"; + + private static final int VORBIS_MAX_INPUT_SIZE = 8192; + private static final int OPUS_MAX_INPUT_SIZE = 5760; + private static final int ENCRYPTION_IV_SIZE = 8; + private static final int TRACK_TYPE_AUDIO = 2; + + private static final int ID_EBML = 0x1A45DFA3; + private static final int ID_EBML_READ_VERSION = 0x42F7; + private static final int ID_DOC_TYPE = 0x4282; + private static final int ID_DOC_TYPE_READ_VERSION = 0x4285; + private static final int ID_SEGMENT = 0x18538067; + private static final int ID_SEGMENT_INFO = 0x1549A966; + private static final int ID_SEEK_HEAD = 0x114D9B74; + private static final int ID_SEEK = 0x4DBB; + private static final int ID_SEEK_ID = 0x53AB; + private static final int ID_SEEK_POSITION = 0x53AC; + private static final int ID_INFO = 0x1549A966; + private static final int ID_TIMECODE_SCALE = 0x2AD7B1; + private static final int ID_DURATION = 0x4489; + private static final int ID_CLUSTER = 0x1F43B675; + private static final int ID_TIME_CODE = 0xE7; + private static final int ID_SIMPLE_BLOCK = 0xA3; + private static final int ID_BLOCK_GROUP = 0xA0; + private static final int ID_BLOCK = 0xA1; + private static final int ID_BLOCK_DURATION = 0x9B; + private static final int ID_BLOCK_ADDITIONS = 0x75A1; + private static final int ID_BLOCK_MORE = 0xA6; + private static final int ID_BLOCK_ADD_ID = 0xEE; + private static final int ID_BLOCK_ADDITIONAL = 0xA5; + private static final int ID_REFERENCE_BLOCK = 0xFB; + private static final int ID_TRACKS = 0x1654AE6B; + private static final int ID_TRACK_ENTRY = 0xAE; + private static final int ID_TRACK_NUMBER = 0xD7; + private static final int ID_TRACK_TYPE = 0x83; + private static final int ID_FLAG_DEFAULT = 0x88; + private static final int ID_FLAG_FORCED = 0x55AA; + private static final int ID_DEFAULT_DURATION = 0x23E383; + private static final int ID_MAX_BLOCK_ADDITION_ID = 0x55EE; + private static final int ID_NAME = 0x536E; + private static final int ID_CODEC_ID = 0x86; + private static final int ID_CODEC_PRIVATE = 0x63A2; + private static final int ID_CODEC_DELAY = 0x56AA; + private static final int ID_SEEK_PRE_ROLL = 0x56BB; + private static final int ID_VIDEO = 0xE0; + private static final int ID_PIXEL_WIDTH = 0xB0; + private static final int ID_PIXEL_HEIGHT = 0xBA; + private static final int ID_DISPLAY_WIDTH = 0x54B0; + private static final int ID_DISPLAY_HEIGHT = 0x54BA; + private static final int ID_DISPLAY_UNIT = 0x54B2; + private static final int ID_AUDIO = 0xE1; + private static final int ID_CHANNELS = 0x9F; + private static final int ID_AUDIO_BIT_DEPTH = 0x6264; + private static final int ID_SAMPLING_FREQUENCY = 0xB5; + private static final int ID_CONTENT_ENCODINGS = 0x6D80; + private static final int ID_CONTENT_ENCODING = 0x6240; + private static final int ID_CONTENT_ENCODING_ORDER = 0x5031; + private static final int ID_CONTENT_ENCODING_SCOPE = 0x5032; + private static final int ID_CONTENT_COMPRESSION = 0x5034; + private static final int ID_CONTENT_COMPRESSION_ALGORITHM = 0x4254; + private static final int ID_CONTENT_COMPRESSION_SETTINGS = 0x4255; + private static final int ID_CONTENT_ENCRYPTION = 0x5035; + private static final int ID_CONTENT_ENCRYPTION_ALGORITHM = 0x47E1; + private static final int ID_CONTENT_ENCRYPTION_KEY_ID = 0x47E2; + private static final int ID_CONTENT_ENCRYPTION_AES_SETTINGS = 0x47E7; + private static final int ID_CONTENT_ENCRYPTION_AES_SETTINGS_CIPHER_MODE = 0x47E8; + private static final int ID_CUES = 0x1C53BB6B; + private static final int ID_CUE_POINT = 0xBB; + private static final int ID_CUE_TIME = 0xB3; + private static final int ID_CUE_TRACK_POSITIONS = 0xB7; + private static final int ID_CUE_CLUSTER_POSITION = 0xF1; + private static final int ID_LANGUAGE = 0x22B59C; + private static final int ID_PROJECTION = 0x7670; + private static final int ID_PROJECTION_TYPE = 0x7671; + private static final int ID_PROJECTION_PRIVATE = 0x7672; + private static final int ID_PROJECTION_POSE_YAW = 0x7673; + private static final int ID_PROJECTION_POSE_PITCH = 0x7674; + private static final int ID_PROJECTION_POSE_ROLL = 0x7675; + private static final int ID_STEREO_MODE = 0x53B8; + private static final int ID_COLOUR = 0x55B0; + private static final int ID_COLOUR_RANGE = 0x55B9; + private static final int ID_COLOUR_TRANSFER = 0x55BA; + private static final int ID_COLOUR_PRIMARIES = 0x55BB; + private static final int ID_MAX_CLL = 0x55BC; + private static final int ID_MAX_FALL = 0x55BD; + private static final int ID_MASTERING_METADATA = 0x55D0; + private static final int ID_PRIMARY_R_CHROMATICITY_X = 0x55D1; + private static final int ID_PRIMARY_R_CHROMATICITY_Y = 0x55D2; + private static final int ID_PRIMARY_G_CHROMATICITY_X = 0x55D3; + private static final int ID_PRIMARY_G_CHROMATICITY_Y = 0x55D4; + private static final int ID_PRIMARY_B_CHROMATICITY_X = 0x55D5; + private static final int ID_PRIMARY_B_CHROMATICITY_Y = 0x55D6; + private static final int ID_WHITE_POINT_CHROMATICITY_X = 0x55D7; + private static final int ID_WHITE_POINT_CHROMATICITY_Y = 0x55D8; + private static final int ID_LUMNINANCE_MAX = 0x55D9; + private static final int ID_LUMNINANCE_MIN = 0x55DA; + + /** + * BlockAddID value for ITU T.35 metadata in a VP9 track. See also + * https://www.webmproject.org/docs/container/. + */ + private static final int BLOCK_ADDITIONAL_ID_VP9_ITU_T_35 = 4; + + private static final int LACING_NONE = 0; + private static final int LACING_XIPH = 1; + private static final int LACING_FIXED_SIZE = 2; + private static final int LACING_EBML = 3; + + private static final int FOURCC_COMPRESSION_DIVX = 0x58564944; + private static final int FOURCC_COMPRESSION_H263 = 0x33363248; + private static final int FOURCC_COMPRESSION_VC1 = 0x31435657; + + /** + * A template for the prefix that must be added to each subrip sample. + * + *

The display time of each subtitle is passed as {@code timeUs} to {@link + * TrackOutput#sampleMetadata}. The start and end timecodes in this template are relative to + * {@code timeUs}. Hence the start timecode is always zero. The 12 byte end timecode starting at + * {@link #SUBRIP_PREFIX_END_TIMECODE_OFFSET} is set to a dummy value, and must be replaced with + * the duration of the subtitle. + * + *

Equivalent to the UTF-8 string: "1\n00:00:00,000 --> 00:00:00,000\n". + */ + private static final byte[] SUBRIP_PREFIX = + new byte[] { + 49, 10, 48, 48, 58, 48, 48, 58, 48, 48, 44, 48, 48, 48, 32, 45, 45, 62, 32, 48, 48, 58, 48, + 48, 58, 48, 48, 44, 48, 48, 48, 10 + }; + /** + * The byte offset of the end timecode in {@link #SUBRIP_PREFIX}. + */ + private static final int SUBRIP_PREFIX_END_TIMECODE_OFFSET = 19; + /** + * The value by which to divide a time in microseconds to convert it to the unit of the last value + * in a subrip timecode (milliseconds). + */ + private static final long SUBRIP_TIMECODE_LAST_VALUE_SCALING_FACTOR = 1000; + /** + * The format of a subrip timecode. + */ + private static final String SUBRIP_TIMECODE_FORMAT = "%02d:%02d:%02d,%03d"; + + /** + * Matroska specific format line for SSA subtitles. + */ + private static final byte[] SSA_DIALOGUE_FORMAT = Util.getUtf8Bytes("Format: Start, End, " + + "ReadOrder, Layer, Style, Name, MarginL, MarginR, MarginV, Effect, Text"); + /** + * A template for the prefix that must be added to each SSA sample. + * + *

The display time of each subtitle is passed as {@code timeUs} to {@link + * TrackOutput#sampleMetadata}. The start and end timecodes in this template are relative to + * {@code timeUs}. Hence the start timecode is always zero. The 12 byte end timecode starting at + * {@link #SUBRIP_PREFIX_END_TIMECODE_OFFSET} is set to a dummy value, and must be replaced with + * the duration of the subtitle. + * + *

Equivalent to the UTF-8 string: "Dialogue: 0:00:00:00,0:00:00:00,". + */ + private static final byte[] SSA_PREFIX = + new byte[] { + 68, 105, 97, 108, 111, 103, 117, 101, 58, 32, 48, 58, 48, 48, 58, 48, 48, 58, 48, 48, 44, + 48, 58, 48, 48, 58, 48, 48, 58, 48, 48, 44 + }; + /** + * The byte offset of the end timecode in {@link #SSA_PREFIX}. + */ + private static final int SSA_PREFIX_END_TIMECODE_OFFSET = 21; + /** + * The value by which to divide a time in microseconds to convert it to the unit of the last value + * in an SSA timecode (1/100ths of a second). + */ + private static final long SSA_TIMECODE_LAST_VALUE_SCALING_FACTOR = 10000; + /** + * The format of an SSA timecode. + */ + private static final String SSA_TIMECODE_FORMAT = "%01d:%02d:%02d:%02d"; + + /** + * The length in bytes of a WAVEFORMATEX structure. + */ + private static final int WAVE_FORMAT_SIZE = 18; + /** + * Format tag indicating a WAVEFORMATEXTENSIBLE structure. + */ + private static final int WAVE_FORMAT_EXTENSIBLE = 0xFFFE; + /** + * Format tag for PCM. + */ + private static final int WAVE_FORMAT_PCM = 1; + /** + * Sub format for PCM. + */ + private static final UUID WAVE_SUBFORMAT_PCM = new UUID(0x0100000000001000L, 0x800000AA00389B71L); + + private final EbmlReader reader; + private final VarintReader varintReader; + private final SparseArray tracks; + private final boolean seekForCuesEnabled; + + // Temporary arrays. + private final ParsableByteArray nalStartCode; + private final ParsableByteArray nalLength; + private final ParsableByteArray scratch; + private final ParsableByteArray vorbisNumPageSamples; + private final ParsableByteArray seekEntryIdBytes; + private final ParsableByteArray sampleStrippedBytes; + private final ParsableByteArray subtitleSample; + private final ParsableByteArray encryptionInitializationVector; + private final ParsableByteArray encryptionSubsampleData; + private final ParsableByteArray blockAdditionalData; + private ByteBuffer encryptionSubsampleDataBuffer; + + private long segmentContentSize; + private long segmentContentPosition = C.POSITION_UNSET; + private long timecodeScale = C.TIME_UNSET; + private long durationTimecode = C.TIME_UNSET; + private long durationUs = C.TIME_UNSET; + + // The track corresponding to the current TrackEntry element, or null. + private Track currentTrack; + + // Whether a seek map has been sent to the output. + private boolean sentSeekMap; + + // Master seek entry related elements. + private int seekEntryId; + private long seekEntryPosition; + + // Cue related elements. + private boolean seekForCues; + private long cuesContentPosition = C.POSITION_UNSET; + private long seekPositionAfterBuildingCues = C.POSITION_UNSET; + private long clusterTimecodeUs = C.TIME_UNSET; + private LongArray cueTimesUs; + private LongArray cueClusterPositions; + private boolean seenClusterPositionForCurrentCuePoint; + + // Reading state. + private boolean haveOutputSample; + + // Block reading state. + private int blockState; + private long blockTimeUs; + private long blockDurationUs; + private int blockSampleIndex; + private int blockSampleCount; + private int[] blockSampleSizes; + private int blockTrackNumber; + private int blockTrackNumberLength; + @C.BufferFlags + private int blockFlags; + private int blockAdditionalId; + private boolean blockHasReferenceBlock; + + // Sample writing state. + private int sampleBytesRead; + private int sampleBytesWritten; + private int sampleCurrentNalBytesRemaining; + private boolean sampleEncodingHandled; + private boolean sampleSignalByteRead; + private boolean samplePartitionCountRead; + private int samplePartitionCount; + private byte sampleSignalByte; + private boolean sampleInitializationVectorRead; + + // Extractor outputs. + private ExtractorOutput extractorOutput; + + public MatroskaExtractor() { + this(0); + } + + public MatroskaExtractor(@Flags int flags) { + this(new DefaultEbmlReader(), flags); + } + + /* package */ MatroskaExtractor(EbmlReader reader, @Flags int flags) { + this.reader = reader; + this.reader.init(new InnerEbmlProcessor()); + seekForCuesEnabled = (flags & FLAG_DISABLE_SEEK_FOR_CUES) == 0; + varintReader = new VarintReader(); + tracks = new SparseArray<>(); + scratch = new ParsableByteArray(4); + vorbisNumPageSamples = new ParsableByteArray(ByteBuffer.allocate(4).putInt(-1).array()); + seekEntryIdBytes = new ParsableByteArray(4); + nalStartCode = new ParsableByteArray(NalUnitUtil.NAL_START_CODE); + nalLength = new ParsableByteArray(4); + sampleStrippedBytes = new ParsableByteArray(); + subtitleSample = new ParsableByteArray(); + encryptionInitializationVector = new ParsableByteArray(ENCRYPTION_IV_SIZE); + encryptionSubsampleData = new ParsableByteArray(); + blockAdditionalData = new ParsableByteArray(); + } + + @Override + public final boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + return new Sniffer().sniff(input); + } + + @Override + public final void init(ExtractorOutput output) { + extractorOutput = output; + } + + @CallSuper + @Override + public void seek(long position, long timeUs) { + clusterTimecodeUs = C.TIME_UNSET; + blockState = BLOCK_STATE_START; + reader.reset(); + varintReader.reset(); + resetWriteSampleData(); + for (int i = 0; i < tracks.size(); i++) { + tracks.valueAt(i).reset(); + } + } + + @Override + public final void release() { + // Do nothing + } + + @Override + public final int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + haveOutputSample = false; + boolean continueReading = true; + while (continueReading && !haveOutputSample) { + continueReading = reader.read(input); + if (continueReading && maybeSeekForCues(seekPosition, input.getPosition())) { + return Extractor.RESULT_SEEK; + } + } + if (!continueReading) { + for (int i = 0; i < tracks.size(); i++) { + tracks.valueAt(i).outputPendingSampleMetadata(); + } + return Extractor.RESULT_END_OF_INPUT; + } + return Extractor.RESULT_CONTINUE; + } + + /** + * Maps an element ID to a corresponding type. + * + * @see EbmlProcessor#getElementType(int) + */ + @CallSuper + @EbmlProcessor.ElementType + protected int getElementType(int id) { + switch (id) { + case ID_EBML: + case ID_SEGMENT: + case ID_SEEK_HEAD: + case ID_SEEK: + case ID_INFO: + case ID_CLUSTER: + case ID_TRACKS: + case ID_TRACK_ENTRY: + case ID_AUDIO: + case ID_VIDEO: + case ID_CONTENT_ENCODINGS: + case ID_CONTENT_ENCODING: + case ID_CONTENT_COMPRESSION: + case ID_CONTENT_ENCRYPTION: + case ID_CONTENT_ENCRYPTION_AES_SETTINGS: + case ID_CUES: + case ID_CUE_POINT: + case ID_CUE_TRACK_POSITIONS: + case ID_BLOCK_GROUP: + case ID_BLOCK_ADDITIONS: + case ID_BLOCK_MORE: + case ID_PROJECTION: + case ID_COLOUR: + case ID_MASTERING_METADATA: + return EbmlProcessor.ELEMENT_TYPE_MASTER; + case ID_EBML_READ_VERSION: + case ID_DOC_TYPE_READ_VERSION: + case ID_SEEK_POSITION: + case ID_TIMECODE_SCALE: + case ID_TIME_CODE: + case ID_BLOCK_DURATION: + case ID_PIXEL_WIDTH: + case ID_PIXEL_HEIGHT: + case ID_DISPLAY_WIDTH: + case ID_DISPLAY_HEIGHT: + case ID_DISPLAY_UNIT: + case ID_TRACK_NUMBER: + case ID_TRACK_TYPE: + case ID_FLAG_DEFAULT: + case ID_FLAG_FORCED: + case ID_DEFAULT_DURATION: + case ID_MAX_BLOCK_ADDITION_ID: + case ID_CODEC_DELAY: + case ID_SEEK_PRE_ROLL: + case ID_CHANNELS: + case ID_AUDIO_BIT_DEPTH: + case ID_CONTENT_ENCODING_ORDER: + case ID_CONTENT_ENCODING_SCOPE: + case ID_CONTENT_COMPRESSION_ALGORITHM: + case ID_CONTENT_ENCRYPTION_ALGORITHM: + case ID_CONTENT_ENCRYPTION_AES_SETTINGS_CIPHER_MODE: + case ID_CUE_TIME: + case ID_CUE_CLUSTER_POSITION: + case ID_REFERENCE_BLOCK: + case ID_STEREO_MODE: + case ID_COLOUR_RANGE: + case ID_COLOUR_TRANSFER: + case ID_COLOUR_PRIMARIES: + case ID_MAX_CLL: + case ID_MAX_FALL: + case ID_PROJECTION_TYPE: + case ID_BLOCK_ADD_ID: + return EbmlProcessor.ELEMENT_TYPE_UNSIGNED_INT; + case ID_DOC_TYPE: + case ID_NAME: + case ID_CODEC_ID: + case ID_LANGUAGE: + return EbmlProcessor.ELEMENT_TYPE_STRING; + case ID_SEEK_ID: + case ID_CONTENT_COMPRESSION_SETTINGS: + case ID_CONTENT_ENCRYPTION_KEY_ID: + case ID_SIMPLE_BLOCK: + case ID_BLOCK: + case ID_CODEC_PRIVATE: + case ID_PROJECTION_PRIVATE: + case ID_BLOCK_ADDITIONAL: + return EbmlProcessor.ELEMENT_TYPE_BINARY; + case ID_DURATION: + case ID_SAMPLING_FREQUENCY: + case ID_PRIMARY_R_CHROMATICITY_X: + case ID_PRIMARY_R_CHROMATICITY_Y: + case ID_PRIMARY_G_CHROMATICITY_X: + case ID_PRIMARY_G_CHROMATICITY_Y: + case ID_PRIMARY_B_CHROMATICITY_X: + case ID_PRIMARY_B_CHROMATICITY_Y: + case ID_WHITE_POINT_CHROMATICITY_X: + case ID_WHITE_POINT_CHROMATICITY_Y: + case ID_LUMNINANCE_MAX: + case ID_LUMNINANCE_MIN: + case ID_PROJECTION_POSE_YAW: + case ID_PROJECTION_POSE_PITCH: + case ID_PROJECTION_POSE_ROLL: + return EbmlProcessor.ELEMENT_TYPE_FLOAT; + default: + return EbmlProcessor.ELEMENT_TYPE_UNKNOWN; + } + } + + /** + * Checks if the given id is that of a level 1 element. + * + * @see EbmlProcessor#isLevel1Element(int) + */ + @CallSuper + protected boolean isLevel1Element(int id) { + return id == ID_SEGMENT_INFO || id == ID_CLUSTER || id == ID_CUES || id == ID_TRACKS; + } + + /** + * Called when the start of a master element is encountered. + * + * @see EbmlProcessor#startMasterElement(int, long, long) + */ + @CallSuper + protected void startMasterElement(int id, long contentPosition, long contentSize) + throws ParserException { + switch (id) { + case ID_SEGMENT: + if (segmentContentPosition != C.POSITION_UNSET + && segmentContentPosition != contentPosition) { + throw new ParserException("Multiple Segment elements not supported"); + } + segmentContentPosition = contentPosition; + segmentContentSize = contentSize; + break; + case ID_SEEK: + seekEntryId = UNSET_ENTRY_ID; + seekEntryPosition = C.POSITION_UNSET; + break; + case ID_CUES: + cueTimesUs = new LongArray(); + cueClusterPositions = new LongArray(); + break; + case ID_CUE_POINT: + seenClusterPositionForCurrentCuePoint = false; + break; + case ID_CLUSTER: + if (!sentSeekMap) { + // We need to build cues before parsing the cluster. + if (seekForCuesEnabled && cuesContentPosition != C.POSITION_UNSET) { + // We know where the Cues element is located. Seek to request it. + seekForCues = true; + } else { + // We don't know where the Cues element is located. It's most likely omitted. Allow + // playback, but disable seeking. + extractorOutput.seekMap(new SeekMap.Unseekable(durationUs)); + sentSeekMap = true; + } + } + break; + case ID_BLOCK_GROUP: + blockHasReferenceBlock = false; + break; + case ID_CONTENT_ENCODING: + // TODO: check and fail if more than one content encoding is present. + break; + case ID_CONTENT_ENCRYPTION: + currentTrack.hasContentEncryption = true; + break; + case ID_TRACK_ENTRY: + currentTrack = new Track(); + break; + case ID_MASTERING_METADATA: + currentTrack.hasColorInfo = true; + break; + default: + break; + } + } + + /** + * Called when the end of a master element is encountered. + * + * @see EbmlProcessor#endMasterElement(int) + */ + @CallSuper + protected void endMasterElement(int id) throws ParserException { + switch (id) { + case ID_SEGMENT_INFO: + if (timecodeScale == C.TIME_UNSET) { + // timecodeScale was omitted. Use the default value. + timecodeScale = 1000000; + } + if (durationTimecode != C.TIME_UNSET) { + durationUs = scaleTimecodeToUs(durationTimecode); + } + break; + case ID_SEEK: + if (seekEntryId == UNSET_ENTRY_ID || seekEntryPosition == C.POSITION_UNSET) { + throw new ParserException("Mandatory element SeekID or SeekPosition not found"); + } + if (seekEntryId == ID_CUES) { + cuesContentPosition = seekEntryPosition; + } + break; + case ID_CUES: + if (!sentSeekMap) { + extractorOutput.seekMap(buildSeekMap()); + sentSeekMap = true; + } else { + // We have already built the cues. Ignore. + } + break; + case ID_BLOCK_GROUP: + if (blockState != BLOCK_STATE_DATA) { + // We've skipped this block (due to incompatible track number). + return; + } + // Commit sample metadata. + int sampleOffset = 0; + for (int i = 0; i < blockSampleCount; i++) { + sampleOffset += blockSampleSizes[i]; + } + Track track = tracks.get(blockTrackNumber); + for (int i = 0; i < blockSampleCount; i++) { + long sampleTimeUs = blockTimeUs + (i * track.defaultSampleDurationNs) / 1000; + int sampleFlags = blockFlags; + if (i == 0 && !blockHasReferenceBlock) { + // If the ReferenceBlock element was not found in this block, then the first frame is a + // keyframe. + sampleFlags |= C.BUFFER_FLAG_KEY_FRAME; + } + int sampleSize = blockSampleSizes[i]; + sampleOffset -= sampleSize; // The offset is to the end of the sample. + commitSampleToOutput(track, sampleTimeUs, sampleFlags, sampleSize, sampleOffset); + } + blockState = BLOCK_STATE_START; + break; + case ID_CONTENT_ENCODING: + if (currentTrack.hasContentEncryption) { + if (currentTrack.cryptoData == null) { + throw new ParserException("Encrypted Track found but ContentEncKeyID was not found"); + } + currentTrack.drmInitData = new DrmInitData(new SchemeData(C.UUID_NIL, + MimeTypes.VIDEO_WEBM, currentTrack.cryptoData.encryptionKey)); + } + break; + case ID_CONTENT_ENCODINGS: + if (currentTrack.hasContentEncryption && currentTrack.sampleStrippedBytes != null) { + throw new ParserException("Combining encryption and compression is not supported"); + } + break; + case ID_TRACK_ENTRY: + if (isCodecSupported(currentTrack.codecId)) { + currentTrack.initializeOutput(extractorOutput, currentTrack.number); + tracks.put(currentTrack.number, currentTrack); + } + currentTrack = null; + break; + case ID_TRACKS: + if (tracks.size() == 0) { + throw new ParserException("No valid tracks were found"); + } + extractorOutput.endTracks(); + break; + default: + break; + } + } + + /** + * Called when an integer element is encountered. + * + * @see EbmlProcessor#integerElement(int, long) + */ + @CallSuper + protected void integerElement(int id, long value) throws ParserException { + switch (id) { + case ID_EBML_READ_VERSION: + // Validate that EBMLReadVersion is supported. This extractor only supports v1. + if (value != 1) { + throw new ParserException("EBMLReadVersion " + value + " not supported"); + } + break; + case ID_DOC_TYPE_READ_VERSION: + // Validate that DocTypeReadVersion is supported. This extractor only supports up to v2. + if (value < 1 || value > 2) { + throw new ParserException("DocTypeReadVersion " + value + " not supported"); + } + break; + case ID_SEEK_POSITION: + // Seek Position is the relative offset beginning from the Segment. So to get absolute + // offset from the beginning of the file, we need to add segmentContentPosition to it. + seekEntryPosition = value + segmentContentPosition; + break; + case ID_TIMECODE_SCALE: + timecodeScale = value; + break; + case ID_PIXEL_WIDTH: + currentTrack.width = (int) value; + break; + case ID_PIXEL_HEIGHT: + currentTrack.height = (int) value; + break; + case ID_DISPLAY_WIDTH: + currentTrack.displayWidth = (int) value; + break; + case ID_DISPLAY_HEIGHT: + currentTrack.displayHeight = (int) value; + break; + case ID_DISPLAY_UNIT: + currentTrack.displayUnit = (int) value; + break; + case ID_TRACK_NUMBER: + currentTrack.number = (int) value; + break; + case ID_FLAG_DEFAULT: + currentTrack.flagDefault = value == 1; + break; + case ID_FLAG_FORCED: + currentTrack.flagForced = value == 1; + break; + case ID_TRACK_TYPE: + currentTrack.type = (int) value; + break; + case ID_DEFAULT_DURATION: + currentTrack.defaultSampleDurationNs = (int) value; + break; + case ID_MAX_BLOCK_ADDITION_ID: + currentTrack.maxBlockAdditionId = (int) value; + break; + case ID_CODEC_DELAY: + currentTrack.codecDelayNs = value; + break; + case ID_SEEK_PRE_ROLL: + currentTrack.seekPreRollNs = value; + break; + case ID_CHANNELS: + currentTrack.channelCount = (int) value; + break; + case ID_AUDIO_BIT_DEPTH: + currentTrack.audioBitDepth = (int) value; + break; + case ID_REFERENCE_BLOCK: + blockHasReferenceBlock = true; + break; + case ID_CONTENT_ENCODING_ORDER: + // This extractor only supports one ContentEncoding element and hence the order has to be 0. + if (value != 0) { + throw new ParserException("ContentEncodingOrder " + value + " not supported"); + } + break; + case ID_CONTENT_ENCODING_SCOPE: + // This extractor only supports the scope of all frames. + if (value != 1) { + throw new ParserException("ContentEncodingScope " + value + " not supported"); + } + break; + case ID_CONTENT_COMPRESSION_ALGORITHM: + // This extractor only supports header stripping. + if (value != 3) { + throw new ParserException("ContentCompAlgo " + value + " not supported"); + } + break; + case ID_CONTENT_ENCRYPTION_ALGORITHM: + // Only the value 5 (AES) is allowed according to the WebM specification. + if (value != 5) { + throw new ParserException("ContentEncAlgo " + value + " not supported"); + } + break; + case ID_CONTENT_ENCRYPTION_AES_SETTINGS_CIPHER_MODE: + // Only the value 1 is allowed according to the WebM specification. + if (value != 1) { + throw new ParserException("AESSettingsCipherMode " + value + " not supported"); + } + break; + case ID_CUE_TIME: + cueTimesUs.add(scaleTimecodeToUs(value)); + break; + case ID_CUE_CLUSTER_POSITION: + if (!seenClusterPositionForCurrentCuePoint) { + // If there's more than one video/audio track, then there could be more than one + // CueTrackPositions within a single CuePoint. In such a case, ignore all but the first + // one (since the cluster position will be quite close for all the tracks). + cueClusterPositions.add(value); + seenClusterPositionForCurrentCuePoint = true; + } + break; + case ID_TIME_CODE: + clusterTimecodeUs = scaleTimecodeToUs(value); + break; + case ID_BLOCK_DURATION: + blockDurationUs = scaleTimecodeToUs(value); + break; + case ID_STEREO_MODE: + int layout = (int) value; + switch (layout) { + case 0: + currentTrack.stereoMode = C.STEREO_MODE_MONO; + break; + case 1: + currentTrack.stereoMode = C.STEREO_MODE_LEFT_RIGHT; + break; + case 3: + currentTrack.stereoMode = C.STEREO_MODE_TOP_BOTTOM; + break; + case 15: + currentTrack.stereoMode = C.STEREO_MODE_STEREO_MESH; + break; + default: + break; + } + break; + case ID_COLOUR_PRIMARIES: + currentTrack.hasColorInfo = true; + switch ((int) value) { + case 1: + currentTrack.colorSpace = C.COLOR_SPACE_BT709; + break; + case 4: // BT.470M. + case 5: // BT.470BG. + case 6: // SMPTE 170M. + case 7: // SMPTE 240M. + currentTrack.colorSpace = C.COLOR_SPACE_BT601; + break; + case 9: + currentTrack.colorSpace = C.COLOR_SPACE_BT2020; + break; + default: + break; + } + break; + case ID_COLOUR_TRANSFER: + switch ((int) value) { + case 1: // BT.709. + case 6: // SMPTE 170M. + case 7: // SMPTE 240M. + currentTrack.colorTransfer = C.COLOR_TRANSFER_SDR; + break; + case 16: + currentTrack.colorTransfer = C.COLOR_TRANSFER_ST2084; + break; + case 18: + currentTrack.colorTransfer = C.COLOR_TRANSFER_HLG; + break; + default: + break; + } + break; + case ID_COLOUR_RANGE: + switch((int) value) { + case 1: // Broadcast range. + currentTrack.colorRange = C.COLOR_RANGE_LIMITED; + break; + case 2: + currentTrack.colorRange = C.COLOR_RANGE_FULL; + break; + default: + break; + } + break; + case ID_MAX_CLL: + currentTrack.maxContentLuminance = (int) value; + break; + case ID_MAX_FALL: + currentTrack.maxFrameAverageLuminance = (int) value; + break; + case ID_PROJECTION_TYPE: + switch ((int) value) { + case 0: + currentTrack.projectionType = C.PROJECTION_RECTANGULAR; + break; + case 1: + currentTrack.projectionType = C.PROJECTION_EQUIRECTANGULAR; + break; + case 2: + currentTrack.projectionType = C.PROJECTION_CUBEMAP; + break; + case 3: + currentTrack.projectionType = C.PROJECTION_MESH; + break; + default: + break; + } + break; + case ID_BLOCK_ADD_ID: + blockAdditionalId = (int) value; + break; + default: + break; + } + } + + /** + * Called when a float element is encountered. + * + * @see EbmlProcessor#floatElement(int, double) + */ + @CallSuper + protected void floatElement(int id, double value) throws ParserException { + switch (id) { + case ID_DURATION: + durationTimecode = (long) value; + break; + case ID_SAMPLING_FREQUENCY: + currentTrack.sampleRate = (int) value; + break; + case ID_PRIMARY_R_CHROMATICITY_X: + currentTrack.primaryRChromaticityX = (float) value; + break; + case ID_PRIMARY_R_CHROMATICITY_Y: + currentTrack.primaryRChromaticityY = (float) value; + break; + case ID_PRIMARY_G_CHROMATICITY_X: + currentTrack.primaryGChromaticityX = (float) value; + break; + case ID_PRIMARY_G_CHROMATICITY_Y: + currentTrack.primaryGChromaticityY = (float) value; + break; + case ID_PRIMARY_B_CHROMATICITY_X: + currentTrack.primaryBChromaticityX = (float) value; + break; + case ID_PRIMARY_B_CHROMATICITY_Y: + currentTrack.primaryBChromaticityY = (float) value; + break; + case ID_WHITE_POINT_CHROMATICITY_X: + currentTrack.whitePointChromaticityX = (float) value; + break; + case ID_WHITE_POINT_CHROMATICITY_Y: + currentTrack.whitePointChromaticityY = (float) value; + break; + case ID_LUMNINANCE_MAX: + currentTrack.maxMasteringLuminance = (float) value; + break; + case ID_LUMNINANCE_MIN: + currentTrack.minMasteringLuminance = (float) value; + break; + case ID_PROJECTION_POSE_YAW: + currentTrack.projectionPoseYaw = (float) value; + break; + case ID_PROJECTION_POSE_PITCH: + currentTrack.projectionPosePitch = (float) value; + break; + case ID_PROJECTION_POSE_ROLL: + currentTrack.projectionPoseRoll = (float) value; + break; + default: + break; + } + } + + /** + * Called when a string element is encountered. + * + * @see EbmlProcessor#stringElement(int, String) + */ + @CallSuper + protected void stringElement(int id, String value) throws ParserException { + switch (id) { + case ID_DOC_TYPE: + // Validate that DocType is supported. + if (!DOC_TYPE_WEBM.equals(value) && !DOC_TYPE_MATROSKA.equals(value)) { + throw new ParserException("DocType " + value + " not supported"); + } + break; + case ID_NAME: + currentTrack.name = value; + break; + case ID_CODEC_ID: + currentTrack.codecId = value; + break; + case ID_LANGUAGE: + currentTrack.language = value; + break; + default: + break; + } + } + + /** + * Called when a binary element is encountered. + * + * @see EbmlProcessor#binaryElement(int, int, ExtractorInput) + */ + @CallSuper + protected void binaryElement(int id, int contentSize, ExtractorInput input) + throws IOException, InterruptedException { + switch (id) { + case ID_SEEK_ID: + Arrays.fill(seekEntryIdBytes.data, (byte) 0); + input.readFully(seekEntryIdBytes.data, 4 - contentSize, contentSize); + seekEntryIdBytes.setPosition(0); + seekEntryId = (int) seekEntryIdBytes.readUnsignedInt(); + break; + case ID_CODEC_PRIVATE: + currentTrack.codecPrivate = new byte[contentSize]; + input.readFully(currentTrack.codecPrivate, 0, contentSize); + break; + case ID_PROJECTION_PRIVATE: + currentTrack.projectionData = new byte[contentSize]; + input.readFully(currentTrack.projectionData, 0, contentSize); + break; + case ID_CONTENT_COMPRESSION_SETTINGS: + // This extractor only supports header stripping, so the payload is the stripped bytes. + currentTrack.sampleStrippedBytes = new byte[contentSize]; + input.readFully(currentTrack.sampleStrippedBytes, 0, contentSize); + break; + case ID_CONTENT_ENCRYPTION_KEY_ID: + byte[] encryptionKey = new byte[contentSize]; + input.readFully(encryptionKey, 0, contentSize); + currentTrack.cryptoData = new TrackOutput.CryptoData(C.CRYPTO_MODE_AES_CTR, encryptionKey, + 0, 0); // We assume patternless AES-CTR. + break; + case ID_SIMPLE_BLOCK: + case ID_BLOCK: + // Please refer to http://www.matroska.org/technical/specs/index.html#simpleblock_structure + // and http://matroska.org/technical/specs/index.html#block_structure + // for info about how data is organized in SimpleBlock and Block elements respectively. They + // differ only in the way flags are specified. + + if (blockState == BLOCK_STATE_START) { + blockTrackNumber = (int) varintReader.readUnsignedVarint(input, false, true, 8); + blockTrackNumberLength = varintReader.getLastLength(); + blockDurationUs = C.TIME_UNSET; + blockState = BLOCK_STATE_HEADER; + scratch.reset(); + } + + Track track = tracks.get(blockTrackNumber); + + // Ignore the block if we don't know about the track to which it belongs. + if (track == null) { + input.skipFully(contentSize - blockTrackNumberLength); + blockState = BLOCK_STATE_START; + return; + } + + if (blockState == BLOCK_STATE_HEADER) { + // Read the relative timecode (2 bytes) and flags (1 byte). + readScratch(input, 3); + int lacing = (scratch.data[2] & 0x06) >> 1; + if (lacing == LACING_NONE) { + blockSampleCount = 1; + blockSampleSizes = ensureArrayCapacity(blockSampleSizes, 1); + blockSampleSizes[0] = contentSize - blockTrackNumberLength - 3; + } else { + // Read the sample count (1 byte). + readScratch(input, 4); + blockSampleCount = (scratch.data[3] & 0xFF) + 1; + blockSampleSizes = ensureArrayCapacity(blockSampleSizes, blockSampleCount); + if (lacing == LACING_FIXED_SIZE) { + int blockLacingSampleSize = + (contentSize - blockTrackNumberLength - 4) / blockSampleCount; + Arrays.fill(blockSampleSizes, 0, blockSampleCount, blockLacingSampleSize); + } else if (lacing == LACING_XIPH) { + int totalSamplesSize = 0; + int headerSize = 4; + for (int sampleIndex = 0; sampleIndex < blockSampleCount - 1; sampleIndex++) { + blockSampleSizes[sampleIndex] = 0; + int byteValue; + do { + readScratch(input, ++headerSize); + byteValue = scratch.data[headerSize - 1] & 0xFF; + blockSampleSizes[sampleIndex] += byteValue; + } while (byteValue == 0xFF); + totalSamplesSize += blockSampleSizes[sampleIndex]; + } + blockSampleSizes[blockSampleCount - 1] = + contentSize - blockTrackNumberLength - headerSize - totalSamplesSize; + } else if (lacing == LACING_EBML) { + int totalSamplesSize = 0; + int headerSize = 4; + for (int sampleIndex = 0; sampleIndex < blockSampleCount - 1; sampleIndex++) { + blockSampleSizes[sampleIndex] = 0; + readScratch(input, ++headerSize); + if (scratch.data[headerSize - 1] == 0) { + throw new ParserException("No valid varint length mask found"); + } + long readValue = 0; + for (int i = 0; i < 8; i++) { + int lengthMask = 1 << (7 - i); + if ((scratch.data[headerSize - 1] & lengthMask) != 0) { + int readPosition = headerSize - 1; + headerSize += i; + readScratch(input, headerSize); + readValue = (scratch.data[readPosition++] & 0xFF) & ~lengthMask; + while (readPosition < headerSize) { + readValue <<= 8; + readValue |= (scratch.data[readPosition++] & 0xFF); + } + // The first read value is the first size. Later values are signed offsets. + if (sampleIndex > 0) { + readValue -= (1L << (6 + i * 7)) - 1; + } + break; + } + } + if (readValue < Integer.MIN_VALUE || readValue > Integer.MAX_VALUE) { + throw new ParserException("EBML lacing sample size out of range."); + } + int intReadValue = (int) readValue; + blockSampleSizes[sampleIndex] = + sampleIndex == 0 + ? intReadValue + : blockSampleSizes[sampleIndex - 1] + intReadValue; + totalSamplesSize += blockSampleSizes[sampleIndex]; + } + blockSampleSizes[blockSampleCount - 1] = + contentSize - blockTrackNumberLength - headerSize - totalSamplesSize; + } else { + // Lacing is always in the range 0--3. + throw new ParserException("Unexpected lacing value: " + lacing); + } + } + + int timecode = (scratch.data[0] << 8) | (scratch.data[1] & 0xFF); + blockTimeUs = clusterTimecodeUs + scaleTimecodeToUs(timecode); + boolean isInvisible = (scratch.data[2] & 0x08) == 0x08; + boolean isKeyframe = track.type == TRACK_TYPE_AUDIO + || (id == ID_SIMPLE_BLOCK && (scratch.data[2] & 0x80) == 0x80); + blockFlags = (isKeyframe ? C.BUFFER_FLAG_KEY_FRAME : 0) + | (isInvisible ? C.BUFFER_FLAG_DECODE_ONLY : 0); + blockState = BLOCK_STATE_DATA; + blockSampleIndex = 0; + } + + if (id == ID_SIMPLE_BLOCK) { + // For SimpleBlock, we can write sample data and immediately commit the corresponding + // sample metadata. + while (blockSampleIndex < blockSampleCount) { + int sampleSize = writeSampleData(input, track, blockSampleSizes[blockSampleIndex]); + long sampleTimeUs = + blockTimeUs + (blockSampleIndex * track.defaultSampleDurationNs) / 1000; + commitSampleToOutput(track, sampleTimeUs, blockFlags, sampleSize, /* offset= */ 0); + blockSampleIndex++; + } + blockState = BLOCK_STATE_START; + } else { + // For Block, we need to wait until the end of the BlockGroup element before committing + // sample metadata. This is so that we can handle ReferenceBlock (which can be used to + // infer whether the first sample in the block is a keyframe), and BlockAdditions (which + // can contain additional sample data to append) contained in the block group. Just output + // the sample data, storing the final sample sizes for when we commit the metadata. + while (blockSampleIndex < blockSampleCount) { + blockSampleSizes[blockSampleIndex] = + writeSampleData(input, track, blockSampleSizes[blockSampleIndex]); + blockSampleIndex++; + } + } + + break; + case ID_BLOCK_ADDITIONAL: + if (blockState != BLOCK_STATE_DATA) { + return; + } + handleBlockAdditionalData( + tracks.get(blockTrackNumber), blockAdditionalId, input, contentSize); + break; + default: + throw new ParserException("Unexpected id: " + id); + } + } + + protected void handleBlockAdditionalData( + Track track, int blockAdditionalId, ExtractorInput input, int contentSize) + throws IOException, InterruptedException { + if (blockAdditionalId == BLOCK_ADDITIONAL_ID_VP9_ITU_T_35 + && CODEC_ID_VP9.equals(track.codecId)) { + blockAdditionalData.reset(contentSize); + input.readFully(blockAdditionalData.data, 0, contentSize); + } else { + // Unhandled block additional data. + input.skipFully(contentSize); + } + } + + private void commitSampleToOutput( + Track track, long timeUs, @C.BufferFlags int flags, int size, int offset) { + if (track.trueHdSampleRechunker != null) { + track.trueHdSampleRechunker.sampleMetadata(track, timeUs, flags, size, offset); + } else { + if (CODEC_ID_SUBRIP.equals(track.codecId) || CODEC_ID_ASS.equals(track.codecId)) { + if (blockSampleCount > 1) { + Log.w(TAG, "Skipping subtitle sample in laced block."); + } else if (blockDurationUs == C.TIME_UNSET) { + Log.w(TAG, "Skipping subtitle sample with no duration."); + } else { + setSubtitleEndTime(track.codecId, blockDurationUs, subtitleSample.data); + // Note: If we ever want to support DRM protected subtitles then we'll need to output the + // appropriate encryption data here. + track.output.sampleData(subtitleSample, subtitleSample.limit()); + size += subtitleSample.limit(); + } + } + + if ((flags & C.BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA) != 0) { + if (blockSampleCount > 1) { + // There were multiple samples in the block. Appending the additional data to the last + // sample doesn't make sense. Skip instead. + flags &= ~C.BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA; + } else { + // Append supplemental data. + int blockAdditionalSize = blockAdditionalData.limit(); + track.output.sampleData(blockAdditionalData, blockAdditionalSize); + size += blockAdditionalSize; + } + } + track.output.sampleMetadata(timeUs, flags, size, offset, track.cryptoData); + } + haveOutputSample = true; + } + + /** + * Ensures {@link #scratch} contains at least {@code requiredLength} bytes of data, reading from + * the extractor input if necessary. + */ + private void readScratch(ExtractorInput input, int requiredLength) + throws IOException, InterruptedException { + if (scratch.limit() >= requiredLength) { + return; + } + if (scratch.capacity() < requiredLength) { + scratch.reset(Arrays.copyOf(scratch.data, Math.max(scratch.data.length * 2, requiredLength)), + scratch.limit()); + } + input.readFully(scratch.data, scratch.limit(), requiredLength - scratch.limit()); + scratch.setLimit(requiredLength); + } + + /** + * Writes data for a single sample to the track output. + * + * @param input The input from which to read sample data. + * @param track The track to output the sample to. + * @param size The size of the sample data on the input side. + * @return The final size of the written sample. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + private int writeSampleData(ExtractorInput input, Track track, int size) + throws IOException, InterruptedException { + if (CODEC_ID_SUBRIP.equals(track.codecId)) { + writeSubtitleSampleData(input, SUBRIP_PREFIX, size); + return finishWriteSampleData(); + } else if (CODEC_ID_ASS.equals(track.codecId)) { + writeSubtitleSampleData(input, SSA_PREFIX, size); + return finishWriteSampleData(); + } + + TrackOutput output = track.output; + if (!sampleEncodingHandled) { + if (track.hasContentEncryption) { + // If the sample is encrypted, read its encryption signal byte and set the IV size. + // Clear the encrypted flag. + blockFlags &= ~C.BUFFER_FLAG_ENCRYPTED; + if (!sampleSignalByteRead) { + input.readFully(scratch.data, 0, 1); + sampleBytesRead++; + if ((scratch.data[0] & 0x80) == 0x80) { + throw new ParserException("Extension bit is set in signal byte"); + } + sampleSignalByte = scratch.data[0]; + sampleSignalByteRead = true; + } + boolean isEncrypted = (sampleSignalByte & 0x01) == 0x01; + if (isEncrypted) { + boolean hasSubsampleEncryption = (sampleSignalByte & 0x02) == 0x02; + blockFlags |= C.BUFFER_FLAG_ENCRYPTED; + if (!sampleInitializationVectorRead) { + input.readFully(encryptionInitializationVector.data, 0, ENCRYPTION_IV_SIZE); + sampleBytesRead += ENCRYPTION_IV_SIZE; + sampleInitializationVectorRead = true; + // Write the signal byte, containing the IV size and the subsample encryption flag. + scratch.data[0] = (byte) (ENCRYPTION_IV_SIZE | (hasSubsampleEncryption ? 0x80 : 0x00)); + scratch.setPosition(0); + output.sampleData(scratch, 1); + sampleBytesWritten++; + // Write the IV. + encryptionInitializationVector.setPosition(0); + output.sampleData(encryptionInitializationVector, ENCRYPTION_IV_SIZE); + sampleBytesWritten += ENCRYPTION_IV_SIZE; + } + if (hasSubsampleEncryption) { + if (!samplePartitionCountRead) { + input.readFully(scratch.data, 0, 1); + sampleBytesRead++; + scratch.setPosition(0); + samplePartitionCount = scratch.readUnsignedByte(); + samplePartitionCountRead = true; + } + int samplePartitionDataSize = samplePartitionCount * 4; + scratch.reset(samplePartitionDataSize); + input.readFully(scratch.data, 0, samplePartitionDataSize); + sampleBytesRead += samplePartitionDataSize; + short subsampleCount = (short) (1 + (samplePartitionCount / 2)); + int subsampleDataSize = 2 + 6 * subsampleCount; + if (encryptionSubsampleDataBuffer == null + || encryptionSubsampleDataBuffer.capacity() < subsampleDataSize) { + encryptionSubsampleDataBuffer = ByteBuffer.allocate(subsampleDataSize); + } + encryptionSubsampleDataBuffer.position(0); + encryptionSubsampleDataBuffer.putShort(subsampleCount); + // Loop through the partition offsets and write out the data in the way ExoPlayer + // wants it (ISO 23001-7 Part 7): + // 2 bytes - sub sample count. + // for each sub sample: + // 2 bytes - clear data size. + // 4 bytes - encrypted data size. + int partitionOffset = 0; + for (int i = 0; i < samplePartitionCount; i++) { + int previousPartitionOffset = partitionOffset; + partitionOffset = scratch.readUnsignedIntToInt(); + if ((i % 2) == 0) { + encryptionSubsampleDataBuffer.putShort( + (short) (partitionOffset - previousPartitionOffset)); + } else { + encryptionSubsampleDataBuffer.putInt(partitionOffset - previousPartitionOffset); + } + } + int finalPartitionSize = size - sampleBytesRead - partitionOffset; + if ((samplePartitionCount % 2) == 1) { + encryptionSubsampleDataBuffer.putInt(finalPartitionSize); + } else { + encryptionSubsampleDataBuffer.putShort((short) finalPartitionSize); + encryptionSubsampleDataBuffer.putInt(0); + } + encryptionSubsampleData.reset(encryptionSubsampleDataBuffer.array(), subsampleDataSize); + output.sampleData(encryptionSubsampleData, subsampleDataSize); + sampleBytesWritten += subsampleDataSize; + } + } + } else if (track.sampleStrippedBytes != null) { + // If the sample has header stripping, prepare to read/output the stripped bytes first. + sampleStrippedBytes.reset(track.sampleStrippedBytes, track.sampleStrippedBytes.length); + } + + if (track.maxBlockAdditionId > 0) { + blockFlags |= C.BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA; + blockAdditionalData.reset(); + // If there is supplemental data, the structure of the sample data is: + // sample size (4 bytes) || sample data || supplemental data + scratch.reset(/* limit= */ 4); + scratch.data[0] = (byte) ((size >> 24) & 0xFF); + scratch.data[1] = (byte) ((size >> 16) & 0xFF); + scratch.data[2] = (byte) ((size >> 8) & 0xFF); + scratch.data[3] = (byte) (size & 0xFF); + output.sampleData(scratch, 4); + sampleBytesWritten += 4; + } + + sampleEncodingHandled = true; + } + size += sampleStrippedBytes.limit(); + + if (CODEC_ID_H264.equals(track.codecId) || CODEC_ID_H265.equals(track.codecId)) { + // TODO: Deduplicate with Mp4Extractor. + + // Zero the top three bytes of the array that we'll use to decode nal unit lengths, in case + // they're only 1 or 2 bytes long. + byte[] nalLengthData = nalLength.data; + nalLengthData[0] = 0; + nalLengthData[1] = 0; + nalLengthData[2] = 0; + int nalUnitLengthFieldLength = track.nalUnitLengthFieldLength; + int nalUnitLengthFieldLengthDiff = 4 - track.nalUnitLengthFieldLength; + // NAL units are length delimited, but the decoder requires start code delimited units. + // Loop until we've written the sample to the track output, replacing length delimiters with + // start codes as we encounter them. + while (sampleBytesRead < size) { + if (sampleCurrentNalBytesRemaining == 0) { + // Read the NAL length so that we know where we find the next one. + writeToTarget( + input, nalLengthData, nalUnitLengthFieldLengthDiff, nalUnitLengthFieldLength); + sampleBytesRead += nalUnitLengthFieldLength; + nalLength.setPosition(0); + sampleCurrentNalBytesRemaining = nalLength.readUnsignedIntToInt(); + // Write a start code for the current NAL unit. + nalStartCode.setPosition(0); + output.sampleData(nalStartCode, 4); + sampleBytesWritten += 4; + } else { + // Write the payload of the NAL unit. + int bytesWritten = writeToOutput(input, output, sampleCurrentNalBytesRemaining); + sampleBytesRead += bytesWritten; + sampleBytesWritten += bytesWritten; + sampleCurrentNalBytesRemaining -= bytesWritten; + } + } + } else { + if (track.trueHdSampleRechunker != null) { + Assertions.checkState(sampleStrippedBytes.limit() == 0); + track.trueHdSampleRechunker.startSample(input); + } + while (sampleBytesRead < size) { + int bytesWritten = writeToOutput(input, output, size - sampleBytesRead); + sampleBytesRead += bytesWritten; + sampleBytesWritten += bytesWritten; + } + } + + if (CODEC_ID_VORBIS.equals(track.codecId)) { + // Vorbis decoder in android MediaCodec [1] expects the last 4 bytes of the sample to be the + // number of samples in the current page. This definition holds good only for Ogg and + // irrelevant for Matroska. So we always set this to -1 (the decoder will ignore this value if + // we set it to -1). The android platform media extractor [2] does the same. + // [1] https://android.googlesource.com/platform/frameworks/av/+/lollipop-release/media/libstagefright/codecs/vorbis/dec/SoftVorbis.cpp#314 + // [2] https://android.googlesource.com/platform/frameworks/av/+/lollipop-release/media/libstagefright/NuMediaExtractor.cpp#474 + vorbisNumPageSamples.setPosition(0); + output.sampleData(vorbisNumPageSamples, 4); + sampleBytesWritten += 4; + } + + return finishWriteSampleData(); + } + + /** + * Called by {@link #writeSampleData(ExtractorInput, Track, int)} when the sample has been + * written. Returns the final sample size and resets state for the next sample. + */ + private int finishWriteSampleData() { + int sampleSize = sampleBytesWritten; + resetWriteSampleData(); + return sampleSize; + } + + /** Resets state used by {@link #writeSampleData(ExtractorInput, Track, int)}. */ + private void resetWriteSampleData() { + sampleBytesRead = 0; + sampleBytesWritten = 0; + sampleCurrentNalBytesRemaining = 0; + sampleEncodingHandled = false; + sampleSignalByteRead = false; + samplePartitionCountRead = false; + samplePartitionCount = 0; + sampleSignalByte = (byte) 0; + sampleInitializationVectorRead = false; + sampleStrippedBytes.reset(); + } + + private void writeSubtitleSampleData(ExtractorInput input, byte[] samplePrefix, int size) + throws IOException, InterruptedException { + int sizeWithPrefix = samplePrefix.length + size; + if (subtitleSample.capacity() < sizeWithPrefix) { + // Initialize subripSample to contain the required prefix and have space to hold a subtitle + // twice as long as this one. + subtitleSample.data = Arrays.copyOf(samplePrefix, sizeWithPrefix + size); + } else { + System.arraycopy(samplePrefix, 0, subtitleSample.data, 0, samplePrefix.length); + } + input.readFully(subtitleSample.data, samplePrefix.length, size); + subtitleSample.reset(sizeWithPrefix); + // Defer writing the data to the track output. We need to modify the sample data by setting + // the correct end timecode, which we might not have yet. + } + + /** + * Overwrites the end timecode in {@code subtitleData} with the correctly formatted time derived + * from {@code durationUs}. + * + *

See documentation on {@link #SSA_DIALOGUE_FORMAT} and {@link #SUBRIP_PREFIX} for why we use + * the duration as the end timecode. + * + * @param codecId The subtitle codec; must be {@link #CODEC_ID_SUBRIP} or {@link #CODEC_ID_ASS}. + * @param durationUs The duration of the sample, in microseconds. + * @param subtitleData The subtitle sample in which to overwrite the end timecode (output + * parameter). + */ + private static void setSubtitleEndTime(String codecId, long durationUs, byte[] subtitleData) { + byte[] endTimecode; + int endTimecodeOffset; + switch (codecId) { + case CODEC_ID_SUBRIP: + endTimecode = + formatSubtitleTimecode( + durationUs, SUBRIP_TIMECODE_FORMAT, SUBRIP_TIMECODE_LAST_VALUE_SCALING_FACTOR); + endTimecodeOffset = SUBRIP_PREFIX_END_TIMECODE_OFFSET; + break; + case CODEC_ID_ASS: + endTimecode = + formatSubtitleTimecode( + durationUs, SSA_TIMECODE_FORMAT, SSA_TIMECODE_LAST_VALUE_SCALING_FACTOR); + endTimecodeOffset = SSA_PREFIX_END_TIMECODE_OFFSET; + break; + default: + throw new IllegalArgumentException(); + } + System.arraycopy(endTimecode, 0, subtitleData, endTimecodeOffset, endTimecode.length); + } + + /** + * Formats {@code timeUs} using {@code timecodeFormat}, and sets it as the end timecode in {@code + * subtitleSampleData}. + */ + private static byte[] formatSubtitleTimecode( + long timeUs, String timecodeFormat, long lastTimecodeValueScalingFactor) { + Assertions.checkArgument(timeUs != C.TIME_UNSET); + byte[] timeCodeData; + int hours = (int) (timeUs / (3600 * C.MICROS_PER_SECOND)); + timeUs -= (hours * 3600 * C.MICROS_PER_SECOND); + int minutes = (int) (timeUs / (60 * C.MICROS_PER_SECOND)); + timeUs -= (minutes * 60 * C.MICROS_PER_SECOND); + int seconds = (int) (timeUs / C.MICROS_PER_SECOND); + timeUs -= (seconds * C.MICROS_PER_SECOND); + int lastValue = (int) (timeUs / lastTimecodeValueScalingFactor); + timeCodeData = + Util.getUtf8Bytes( + String.format(Locale.US, timecodeFormat, hours, minutes, seconds, lastValue)); + return timeCodeData; + } + + /** + * Writes {@code length} bytes of sample data into {@code target} at {@code offset}, consisting of + * pending {@link #sampleStrippedBytes} and any remaining data read from {@code input}. + */ + private void writeToTarget(ExtractorInput input, byte[] target, int offset, int length) + throws IOException, InterruptedException { + int pendingStrippedBytes = Math.min(length, sampleStrippedBytes.bytesLeft()); + input.readFully(target, offset + pendingStrippedBytes, length - pendingStrippedBytes); + if (pendingStrippedBytes > 0) { + sampleStrippedBytes.readBytes(target, offset, pendingStrippedBytes); + } + } + + /** + * Outputs up to {@code length} bytes of sample data to {@code output}, consisting of either + * {@link #sampleStrippedBytes} or data read from {@code input}. + */ + private int writeToOutput(ExtractorInput input, TrackOutput output, int length) + throws IOException, InterruptedException { + int bytesWritten; + int strippedBytesLeft = sampleStrippedBytes.bytesLeft(); + if (strippedBytesLeft > 0) { + bytesWritten = Math.min(length, strippedBytesLeft); + output.sampleData(sampleStrippedBytes, bytesWritten); + } else { + bytesWritten = output.sampleData(input, length, false); + } + return bytesWritten; + } + + /** + * Builds a {@link SeekMap} from the recently gathered Cues information. + * + * @return The built {@link SeekMap}. The returned {@link SeekMap} may be unseekable if cues + * information was missing or incomplete. + */ + private SeekMap buildSeekMap() { + if (segmentContentPosition == C.POSITION_UNSET || durationUs == C.TIME_UNSET + || cueTimesUs == null || cueTimesUs.size() == 0 + || cueClusterPositions == null || cueClusterPositions.size() != cueTimesUs.size()) { + // Cues information is missing or incomplete. + cueTimesUs = null; + cueClusterPositions = null; + return new SeekMap.Unseekable(durationUs); + } + int cuePointsSize = cueTimesUs.size(); + int[] sizes = new int[cuePointsSize]; + long[] offsets = new long[cuePointsSize]; + long[] durationsUs = new long[cuePointsSize]; + long[] timesUs = new long[cuePointsSize]; + for (int i = 0; i < cuePointsSize; i++) { + timesUs[i] = cueTimesUs.get(i); + offsets[i] = segmentContentPosition + cueClusterPositions.get(i); + } + for (int i = 0; i < cuePointsSize - 1; i++) { + sizes[i] = (int) (offsets[i + 1] - offsets[i]); + durationsUs[i] = timesUs[i + 1] - timesUs[i]; + } + sizes[cuePointsSize - 1] = + (int) (segmentContentPosition + segmentContentSize - offsets[cuePointsSize - 1]); + durationsUs[cuePointsSize - 1] = durationUs - timesUs[cuePointsSize - 1]; + + long lastDurationUs = durationsUs[cuePointsSize - 1]; + if (lastDurationUs <= 0) { + Log.w(TAG, "Discarding last cue point with unexpected duration: " + lastDurationUs); + sizes = Arrays.copyOf(sizes, sizes.length - 1); + offsets = Arrays.copyOf(offsets, offsets.length - 1); + durationsUs = Arrays.copyOf(durationsUs, durationsUs.length - 1); + timesUs = Arrays.copyOf(timesUs, timesUs.length - 1); + } + + cueTimesUs = null; + cueClusterPositions = null; + return new ChunkIndex(sizes, offsets, durationsUs, timesUs); + } + + /** + * Updates the position of the holder to Cues element's position if the extractor configuration + * permits use of master seek entry. After building Cues sets the holder's position back to where + * it was before. + * + * @param seekPosition The holder whose position will be updated. + * @param currentPosition Current position of the input. + * @return Whether the seek position was updated. + */ + private boolean maybeSeekForCues(PositionHolder seekPosition, long currentPosition) { + if (seekForCues) { + seekPositionAfterBuildingCues = currentPosition; + seekPosition.position = cuesContentPosition; + seekForCues = false; + return true; + } + // After parsing Cues, seek back to original position if available. We will not do this unless + // we seeked to get to the Cues in the first place. + if (sentSeekMap && seekPositionAfterBuildingCues != C.POSITION_UNSET) { + seekPosition.position = seekPositionAfterBuildingCues; + seekPositionAfterBuildingCues = C.POSITION_UNSET; + return true; + } + return false; + } + + private long scaleTimecodeToUs(long unscaledTimecode) throws ParserException { + if (timecodeScale == C.TIME_UNSET) { + throw new ParserException("Can't scale timecode prior to timecodeScale being set."); + } + return Util.scaleLargeTimestamp(unscaledTimecode, timecodeScale, 1000); + } + + private static boolean isCodecSupported(String codecId) { + return CODEC_ID_VP8.equals(codecId) + || CODEC_ID_VP9.equals(codecId) + || CODEC_ID_AV1.equals(codecId) + || CODEC_ID_MPEG2.equals(codecId) + || CODEC_ID_MPEG4_SP.equals(codecId) + || CODEC_ID_MPEG4_ASP.equals(codecId) + || CODEC_ID_MPEG4_AP.equals(codecId) + || CODEC_ID_H264.equals(codecId) + || CODEC_ID_H265.equals(codecId) + || CODEC_ID_FOURCC.equals(codecId) + || CODEC_ID_THEORA.equals(codecId) + || CODEC_ID_OPUS.equals(codecId) + || CODEC_ID_VORBIS.equals(codecId) + || CODEC_ID_AAC.equals(codecId) + || CODEC_ID_MP2.equals(codecId) + || CODEC_ID_MP3.equals(codecId) + || CODEC_ID_AC3.equals(codecId) + || CODEC_ID_E_AC3.equals(codecId) + || CODEC_ID_TRUEHD.equals(codecId) + || CODEC_ID_DTS.equals(codecId) + || CODEC_ID_DTS_EXPRESS.equals(codecId) + || CODEC_ID_DTS_LOSSLESS.equals(codecId) + || CODEC_ID_FLAC.equals(codecId) + || CODEC_ID_ACM.equals(codecId) + || CODEC_ID_PCM_INT_LIT.equals(codecId) + || CODEC_ID_SUBRIP.equals(codecId) + || CODEC_ID_ASS.equals(codecId) + || CODEC_ID_VOBSUB.equals(codecId) + || CODEC_ID_PGS.equals(codecId) + || CODEC_ID_DVBSUB.equals(codecId); + } + + /** + * Returns an array that can store (at least) {@code length} elements, which will be either a new + * array or {@code array} if it's not null and large enough. + */ + private static int[] ensureArrayCapacity(int[] array, int length) { + if (array == null) { + return new int[length]; + } else if (array.length >= length) { + return array; + } else { + // Double the size to avoid allocating constantly if the required length increases gradually. + return new int[Math.max(array.length * 2, length)]; + } + } + + /** Passes events through to the outer {@link MatroskaExtractor}. */ + private final class InnerEbmlProcessor implements EbmlProcessor { + + @Override + @ElementType + public int getElementType(int id) { + return MatroskaExtractor.this.getElementType(id); + } + + @Override + public boolean isLevel1Element(int id) { + return MatroskaExtractor.this.isLevel1Element(id); + } + + @Override + public void startMasterElement(int id, long contentPosition, long contentSize) + throws ParserException { + MatroskaExtractor.this.startMasterElement(id, contentPosition, contentSize); + } + + @Override + public void endMasterElement(int id) throws ParserException { + MatroskaExtractor.this.endMasterElement(id); + } + + @Override + public void integerElement(int id, long value) throws ParserException { + MatroskaExtractor.this.integerElement(id, value); + } + + @Override + public void floatElement(int id, double value) throws ParserException { + MatroskaExtractor.this.floatElement(id, value); + } + + @Override + public void stringElement(int id, String value) throws ParserException { + MatroskaExtractor.this.stringElement(id, value); + } + + @Override + public void binaryElement(int id, int contentsSize, ExtractorInput input) + throws IOException, InterruptedException { + MatroskaExtractor.this.binaryElement(id, contentsSize, input); + } + } + + /** + * Rechunks TrueHD sample data into groups of {@link Ac3Util#TRUEHD_RECHUNK_SAMPLE_COUNT} samples. + */ + private static final class TrueHdSampleRechunker { + + private final byte[] syncframePrefix; + + private boolean foundSyncframe; + private int chunkSampleCount; + private long chunkTimeUs; + private @C.BufferFlags int chunkFlags; + private int chunkSize; + private int chunkOffset; + + public TrueHdSampleRechunker() { + syncframePrefix = new byte[Ac3Util.TRUEHD_SYNCFRAME_PREFIX_LENGTH]; + } + + public void reset() { + foundSyncframe = false; + chunkSampleCount = 0; + } + + public void startSample(ExtractorInput input) throws IOException, InterruptedException { + if (foundSyncframe) { + return; + } + input.peekFully(syncframePrefix, 0, Ac3Util.TRUEHD_SYNCFRAME_PREFIX_LENGTH); + input.resetPeekPosition(); + if (Ac3Util.parseTrueHdSyncframeAudioSampleCount(syncframePrefix) == 0) { + return; + } + foundSyncframe = true; + } + + public void sampleMetadata( + Track track, long timeUs, @C.BufferFlags int flags, int size, int offset) { + if (!foundSyncframe) { + return; + } + if (chunkSampleCount++ == 0) { + // This is the first sample in the chunk. + chunkTimeUs = timeUs; + chunkFlags = flags; + chunkSize = 0; + } + chunkSize += size; + chunkOffset = offset; // The offset is to the end of the sample. + if (chunkSampleCount >= Ac3Util.TRUEHD_RECHUNK_SAMPLE_COUNT) { + outputPendingSampleMetadata(track); + } + } + + public void outputPendingSampleMetadata(Track track) { + if (chunkSampleCount > 0) { + track.output.sampleMetadata( + chunkTimeUs, chunkFlags, chunkSize, chunkOffset, track.cryptoData); + chunkSampleCount = 0; + } + } + } + + private static final class Track { + + private static final int DISPLAY_UNIT_PIXELS = 0; + private static final int MAX_CHROMATICITY = 50000; // Defined in CTA-861.3. + /** + * Default max content light level (CLL) that should be encoded into hdrStaticInfo. + */ + private static final int DEFAULT_MAX_CLL = 1000; // nits. + + /** + * Default frame-average light level (FALL) that should be encoded into hdrStaticInfo. + */ + private static final int DEFAULT_MAX_FALL = 200; // nits. + + // Common elements. + public String name; + public String codecId; + public int number; + public int type; + public int defaultSampleDurationNs; + public int maxBlockAdditionId; + public boolean hasContentEncryption; + public byte[] sampleStrippedBytes; + public TrackOutput.CryptoData cryptoData; + public byte[] codecPrivate; + public DrmInitData drmInitData; + + // Video elements. + public int width = Format.NO_VALUE; + public int height = Format.NO_VALUE; + public int displayWidth = Format.NO_VALUE; + public int displayHeight = Format.NO_VALUE; + public int displayUnit = DISPLAY_UNIT_PIXELS; + @C.Projection public int projectionType = Format.NO_VALUE; + public float projectionPoseYaw = 0f; + public float projectionPosePitch = 0f; + public float projectionPoseRoll = 0f; + public byte[] projectionData = null; + @C.StereoMode + public int stereoMode = Format.NO_VALUE; + public boolean hasColorInfo = false; + @C.ColorSpace + public int colorSpace = Format.NO_VALUE; + @C.ColorTransfer + public int colorTransfer = Format.NO_VALUE; + @C.ColorRange + public int colorRange = Format.NO_VALUE; + public int maxContentLuminance = DEFAULT_MAX_CLL; + public int maxFrameAverageLuminance = DEFAULT_MAX_FALL; + public float primaryRChromaticityX = Format.NO_VALUE; + public float primaryRChromaticityY = Format.NO_VALUE; + public float primaryGChromaticityX = Format.NO_VALUE; + public float primaryGChromaticityY = Format.NO_VALUE; + public float primaryBChromaticityX = Format.NO_VALUE; + public float primaryBChromaticityY = Format.NO_VALUE; + public float whitePointChromaticityX = Format.NO_VALUE; + public float whitePointChromaticityY = Format.NO_VALUE; + public float maxMasteringLuminance = Format.NO_VALUE; + public float minMasteringLuminance = Format.NO_VALUE; + + // Audio elements. Initially set to their default values. + public int channelCount = 1; + public int audioBitDepth = Format.NO_VALUE; + public int sampleRate = 8000; + public long codecDelayNs = 0; + public long seekPreRollNs = 0; + @Nullable public TrueHdSampleRechunker trueHdSampleRechunker; + + // Text elements. + public boolean flagForced; + public boolean flagDefault = true; + private String language = "eng"; + + // Set when the output is initialized. nalUnitLengthFieldLength is only set for H264/H265. + public TrackOutput output; + public int nalUnitLengthFieldLength; + + /** Initializes the track with an output. */ + public void initializeOutput(ExtractorOutput output, int trackId) throws ParserException { + String mimeType; + int maxInputSize = Format.NO_VALUE; + @C.PcmEncoding int pcmEncoding = Format.NO_VALUE; + List initializationData = null; + switch (codecId) { + case CODEC_ID_VP8: + mimeType = MimeTypes.VIDEO_VP8; + break; + case CODEC_ID_VP9: + mimeType = MimeTypes.VIDEO_VP9; + break; + case CODEC_ID_AV1: + mimeType = MimeTypes.VIDEO_AV1; + break; + case CODEC_ID_MPEG2: + mimeType = MimeTypes.VIDEO_MPEG2; + break; + case CODEC_ID_MPEG4_SP: + case CODEC_ID_MPEG4_ASP: + case CODEC_ID_MPEG4_AP: + mimeType = MimeTypes.VIDEO_MP4V; + initializationData = + codecPrivate == null ? null : Collections.singletonList(codecPrivate); + break; + case CODEC_ID_H264: + mimeType = MimeTypes.VIDEO_H264; + AvcConfig avcConfig = AvcConfig.parse(new ParsableByteArray(codecPrivate)); + initializationData = avcConfig.initializationData; + nalUnitLengthFieldLength = avcConfig.nalUnitLengthFieldLength; + break; + case CODEC_ID_H265: + mimeType = MimeTypes.VIDEO_H265; + HevcConfig hevcConfig = HevcConfig.parse(new ParsableByteArray(codecPrivate)); + initializationData = hevcConfig.initializationData; + nalUnitLengthFieldLength = hevcConfig.nalUnitLengthFieldLength; + break; + case CODEC_ID_FOURCC: + Pair> pair = parseFourCcPrivate(new ParsableByteArray(codecPrivate)); + mimeType = pair.first; + initializationData = pair.second; + break; + case CODEC_ID_THEORA: + // TODO: This can be set to the real mimeType if/when we work out what initializationData + // should be set to for this case. + mimeType = MimeTypes.VIDEO_UNKNOWN; + break; + case CODEC_ID_VORBIS: + mimeType = MimeTypes.AUDIO_VORBIS; + maxInputSize = VORBIS_MAX_INPUT_SIZE; + initializationData = parseVorbisCodecPrivate(codecPrivate); + break; + case CODEC_ID_OPUS: + mimeType = MimeTypes.AUDIO_OPUS; + maxInputSize = OPUS_MAX_INPUT_SIZE; + initializationData = new ArrayList<>(3); + initializationData.add(codecPrivate); + initializationData.add( + ByteBuffer.allocate(8).order(ByteOrder.LITTLE_ENDIAN).putLong(codecDelayNs).array()); + initializationData.add( + ByteBuffer.allocate(8).order(ByteOrder.LITTLE_ENDIAN).putLong(seekPreRollNs).array()); + break; + case CODEC_ID_AAC: + mimeType = MimeTypes.AUDIO_AAC; + initializationData = Collections.singletonList(codecPrivate); + break; + case CODEC_ID_MP2: + mimeType = MimeTypes.AUDIO_MPEG_L2; + maxInputSize = MpegAudioHeader.MAX_FRAME_SIZE_BYTES; + break; + case CODEC_ID_MP3: + mimeType = MimeTypes.AUDIO_MPEG; + maxInputSize = MpegAudioHeader.MAX_FRAME_SIZE_BYTES; + break; + case CODEC_ID_AC3: + mimeType = MimeTypes.AUDIO_AC3; + break; + case CODEC_ID_E_AC3: + mimeType = MimeTypes.AUDIO_E_AC3; + break; + case CODEC_ID_TRUEHD: + mimeType = MimeTypes.AUDIO_TRUEHD; + trueHdSampleRechunker = new TrueHdSampleRechunker(); + break; + case CODEC_ID_DTS: + case CODEC_ID_DTS_EXPRESS: + mimeType = MimeTypes.AUDIO_DTS; + break; + case CODEC_ID_DTS_LOSSLESS: + mimeType = MimeTypes.AUDIO_DTS_HD; + break; + case CODEC_ID_FLAC: + mimeType = MimeTypes.AUDIO_FLAC; + initializationData = Collections.singletonList(codecPrivate); + break; + case CODEC_ID_ACM: + mimeType = MimeTypes.AUDIO_RAW; + if (parseMsAcmCodecPrivate(new ParsableByteArray(codecPrivate))) { + pcmEncoding = Util.getPcmEncoding(audioBitDepth); + if (pcmEncoding == C.ENCODING_INVALID) { + pcmEncoding = Format.NO_VALUE; + mimeType = MimeTypes.AUDIO_UNKNOWN; + Log.w(TAG, "Unsupported PCM bit depth: " + audioBitDepth + ". Setting mimeType to " + + mimeType); + } + } else { + mimeType = MimeTypes.AUDIO_UNKNOWN; + Log.w(TAG, "Non-PCM MS/ACM is unsupported. Setting mimeType to " + mimeType); + } + break; + case CODEC_ID_PCM_INT_LIT: + mimeType = MimeTypes.AUDIO_RAW; + pcmEncoding = Util.getPcmEncoding(audioBitDepth); + if (pcmEncoding == C.ENCODING_INVALID) { + pcmEncoding = Format.NO_VALUE; + mimeType = MimeTypes.AUDIO_UNKNOWN; + Log.w(TAG, "Unsupported PCM bit depth: " + audioBitDepth + ". Setting mimeType to " + + mimeType); + } + break; + case CODEC_ID_SUBRIP: + mimeType = MimeTypes.APPLICATION_SUBRIP; + break; + case CODEC_ID_ASS: + mimeType = MimeTypes.TEXT_SSA; + break; + case CODEC_ID_VOBSUB: + mimeType = MimeTypes.APPLICATION_VOBSUB; + initializationData = Collections.singletonList(codecPrivate); + break; + case CODEC_ID_PGS: + mimeType = MimeTypes.APPLICATION_PGS; + break; + case CODEC_ID_DVBSUB: + mimeType = MimeTypes.APPLICATION_DVBSUBS; + // Init data: composition_page (2), ancillary_page (2) + initializationData = Collections.singletonList(new byte[] {codecPrivate[0], + codecPrivate[1], codecPrivate[2], codecPrivate[3]}); + break; + default: + throw new ParserException("Unrecognized codec identifier."); + } + + int type; + Format format; + @C.SelectionFlags int selectionFlags = 0; + selectionFlags |= flagDefault ? C.SELECTION_FLAG_DEFAULT : 0; + selectionFlags |= flagForced ? C.SELECTION_FLAG_FORCED : 0; + // TODO: Consider reading the name elements of the tracks and, if present, incorporating them + // into the trackId passed when creating the formats. + if (MimeTypes.isAudio(mimeType)) { + type = C.TRACK_TYPE_AUDIO; + format = Format.createAudioSampleFormat(Integer.toString(trackId), mimeType, null, + Format.NO_VALUE, maxInputSize, channelCount, sampleRate, pcmEncoding, + initializationData, drmInitData, selectionFlags, language); + } else if (MimeTypes.isVideo(mimeType)) { + type = C.TRACK_TYPE_VIDEO; + if (displayUnit == Track.DISPLAY_UNIT_PIXELS) { + displayWidth = displayWidth == Format.NO_VALUE ? width : displayWidth; + displayHeight = displayHeight == Format.NO_VALUE ? height : displayHeight; + } + float pixelWidthHeightRatio = Format.NO_VALUE; + if (displayWidth != Format.NO_VALUE && displayHeight != Format.NO_VALUE) { + pixelWidthHeightRatio = ((float) (height * displayWidth)) / (width * displayHeight); + } + ColorInfo colorInfo = null; + if (hasColorInfo) { + byte[] hdrStaticInfo = getHdrStaticInfo(); + colorInfo = new ColorInfo(colorSpace, colorRange, colorTransfer, hdrStaticInfo); + } + int rotationDegrees = Format.NO_VALUE; + // Some HTC devices signal rotation in track names. + if ("htc_video_rotA-000".equals(name)) { + rotationDegrees = 0; + } else if ("htc_video_rotA-090".equals(name)) { + rotationDegrees = 90; + } else if ("htc_video_rotA-180".equals(name)) { + rotationDegrees = 180; + } else if ("htc_video_rotA-270".equals(name)) { + rotationDegrees = 270; + } + if (projectionType == C.PROJECTION_RECTANGULAR + && Float.compare(projectionPoseYaw, 0f) == 0 + && Float.compare(projectionPosePitch, 0f) == 0) { + // The range of projectionPoseRoll is [-180, 180]. + if (Float.compare(projectionPoseRoll, 0f) == 0) { + rotationDegrees = 0; + } else if (Float.compare(projectionPosePitch, 90f) == 0) { + rotationDegrees = 90; + } else if (Float.compare(projectionPosePitch, -180f) == 0 + || Float.compare(projectionPosePitch, 180f) == 0) { + rotationDegrees = 180; + } else if (Float.compare(projectionPosePitch, -90f) == 0) { + rotationDegrees = 270; + } + } + format = + Format.createVideoSampleFormat( + Integer.toString(trackId), + mimeType, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + maxInputSize, + width, + height, + /* frameRate= */ Format.NO_VALUE, + initializationData, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + colorInfo, + drmInitData); + } else if (MimeTypes.APPLICATION_SUBRIP.equals(mimeType)) { + type = C.TRACK_TYPE_TEXT; + format = Format.createTextSampleFormat(Integer.toString(trackId), mimeType, selectionFlags, + language, drmInitData); + } else if (MimeTypes.TEXT_SSA.equals(mimeType)) { + type = C.TRACK_TYPE_TEXT; + initializationData = new ArrayList<>(2); + initializationData.add(SSA_DIALOGUE_FORMAT); + initializationData.add(codecPrivate); + format = Format.createTextSampleFormat(Integer.toString(trackId), mimeType, null, + Format.NO_VALUE, selectionFlags, language, Format.NO_VALUE, drmInitData, + Format.OFFSET_SAMPLE_RELATIVE, initializationData); + } else if (MimeTypes.APPLICATION_VOBSUB.equals(mimeType) + || MimeTypes.APPLICATION_PGS.equals(mimeType) + || MimeTypes.APPLICATION_DVBSUBS.equals(mimeType)) { + type = C.TRACK_TYPE_TEXT; + format = + Format.createImageSampleFormat( + Integer.toString(trackId), + mimeType, + null, + Format.NO_VALUE, + selectionFlags, + initializationData, + language, + drmInitData); + } else { + throw new ParserException("Unexpected MIME type."); + } + + this.output = output.track(number, type); + this.output.format(format); + } + + /** Forces any pending sample metadata to be flushed to the output. */ + public void outputPendingSampleMetadata() { + if (trueHdSampleRechunker != null) { + trueHdSampleRechunker.outputPendingSampleMetadata(this); + } + } + + /** Resets any state stored in the track in response to a seek. */ + public void reset() { + if (trueHdSampleRechunker != null) { + trueHdSampleRechunker.reset(); + } + } + + /** Returns the HDR Static Info as defined in CTA-861.3. */ + @Nullable + private byte[] getHdrStaticInfo() { + // Are all fields present. + if (primaryRChromaticityX == Format.NO_VALUE || primaryRChromaticityY == Format.NO_VALUE + || primaryGChromaticityX == Format.NO_VALUE || primaryGChromaticityY == Format.NO_VALUE + || primaryBChromaticityX == Format.NO_VALUE || primaryBChromaticityY == Format.NO_VALUE + || whitePointChromaticityX == Format.NO_VALUE + || whitePointChromaticityY == Format.NO_VALUE || maxMasteringLuminance == Format.NO_VALUE + || minMasteringLuminance == Format.NO_VALUE) { + return null; + } + + byte[] hdrStaticInfoData = new byte[25]; + ByteBuffer hdrStaticInfo = ByteBuffer.wrap(hdrStaticInfoData).order(ByteOrder.LITTLE_ENDIAN); + hdrStaticInfo.put((byte) 0); // Type. + hdrStaticInfo.putShort((short) ((primaryRChromaticityX * MAX_CHROMATICITY) + 0.5f)); + hdrStaticInfo.putShort((short) ((primaryRChromaticityY * MAX_CHROMATICITY) + 0.5f)); + hdrStaticInfo.putShort((short) ((primaryGChromaticityX * MAX_CHROMATICITY) + 0.5f)); + hdrStaticInfo.putShort((short) ((primaryGChromaticityY * MAX_CHROMATICITY) + 0.5f)); + hdrStaticInfo.putShort((short) ((primaryBChromaticityX * MAX_CHROMATICITY) + 0.5f)); + hdrStaticInfo.putShort((short) ((primaryBChromaticityY * MAX_CHROMATICITY) + 0.5f)); + hdrStaticInfo.putShort((short) ((whitePointChromaticityX * MAX_CHROMATICITY) + 0.5f)); + hdrStaticInfo.putShort((short) ((whitePointChromaticityY * MAX_CHROMATICITY) + 0.5f)); + hdrStaticInfo.putShort((short) (maxMasteringLuminance + 0.5f)); + hdrStaticInfo.putShort((short) (minMasteringLuminance + 0.5f)); + hdrStaticInfo.putShort((short) maxContentLuminance); + hdrStaticInfo.putShort((short) maxFrameAverageLuminance); + return hdrStaticInfoData; + } + + /** + * Builds initialization data for a {@link Format} from FourCC codec private data. + * + * @return The codec mime type and initialization data. If the compression type is not supported + * then the mime type is set to {@link MimeTypes#VIDEO_UNKNOWN} and the initialization data + * is {@code null}. + * @throws ParserException If the initialization data could not be built. + */ + private static Pair> parseFourCcPrivate(ParsableByteArray buffer) + throws ParserException { + try { + buffer.skipBytes(16); // size(4), width(4), height(4), planes(2), bitcount(2). + long compression = buffer.readLittleEndianUnsignedInt(); + if (compression == FOURCC_COMPRESSION_DIVX) { + return new Pair<>(MimeTypes.VIDEO_DIVX, null); + } else if (compression == FOURCC_COMPRESSION_H263) { + return new Pair<>(MimeTypes.VIDEO_H263, null); + } else if (compression == FOURCC_COMPRESSION_VC1) { + // Search for the initialization data from the end of the BITMAPINFOHEADER. The last 20 + // bytes of which are: sizeImage(4), xPel/m (4), yPel/m (4), clrUsed(4), clrImportant(4). + int startOffset = buffer.getPosition() + 20; + byte[] bufferData = buffer.data; + for (int offset = startOffset; offset < bufferData.length - 4; offset++) { + if (bufferData[offset] == 0x00 + && bufferData[offset + 1] == 0x00 + && bufferData[offset + 2] == 0x01 + && bufferData[offset + 3] == 0x0F) { + // We've found the initialization data. + byte[] initializationData = Arrays.copyOfRange(bufferData, offset, bufferData.length); + return new Pair<>(MimeTypes.VIDEO_VC1, Collections.singletonList(initializationData)); + } + } + throw new ParserException("Failed to find FourCC VC1 initialization data"); + } + } catch (ArrayIndexOutOfBoundsException e) { + throw new ParserException("Error parsing FourCC private data"); + } + + Log.w(TAG, "Unknown FourCC. Setting mimeType to " + MimeTypes.VIDEO_UNKNOWN); + return new Pair<>(MimeTypes.VIDEO_UNKNOWN, null); + } + + /** + * Builds initialization data for a {@link Format} from Vorbis codec private data. + * + * @return The initialization data for the {@link Format}. + * @throws ParserException If the initialization data could not be built. + */ + private static List parseVorbisCodecPrivate(byte[] codecPrivate) + throws ParserException { + try { + if (codecPrivate[0] != 0x02) { + throw new ParserException("Error parsing vorbis codec private"); + } + int offset = 1; + int vorbisInfoLength = 0; + while (codecPrivate[offset] == (byte) 0xFF) { + vorbisInfoLength += 0xFF; + offset++; + } + vorbisInfoLength += codecPrivate[offset++]; + + int vorbisSkipLength = 0; + while (codecPrivate[offset] == (byte) 0xFF) { + vorbisSkipLength += 0xFF; + offset++; + } + vorbisSkipLength += codecPrivate[offset++]; + + if (codecPrivate[offset] != 0x01) { + throw new ParserException("Error parsing vorbis codec private"); + } + byte[] vorbisInfo = new byte[vorbisInfoLength]; + System.arraycopy(codecPrivate, offset, vorbisInfo, 0, vorbisInfoLength); + offset += vorbisInfoLength; + if (codecPrivate[offset] != 0x03) { + throw new ParserException("Error parsing vorbis codec private"); + } + offset += vorbisSkipLength; + if (codecPrivate[offset] != 0x05) { + throw new ParserException("Error parsing vorbis codec private"); + } + byte[] vorbisBooks = new byte[codecPrivate.length - offset]; + System.arraycopy(codecPrivate, offset, vorbisBooks, 0, codecPrivate.length - offset); + List initializationData = new ArrayList<>(2); + initializationData.add(vorbisInfo); + initializationData.add(vorbisBooks); + return initializationData; + } catch (ArrayIndexOutOfBoundsException e) { + throw new ParserException("Error parsing vorbis codec private"); + } + } + + /** + * Parses an MS/ACM codec private, returning whether it indicates PCM audio. + * + * @return Whether the codec private indicates PCM audio. + * @throws ParserException If a parsing error occurs. + */ + private static boolean parseMsAcmCodecPrivate(ParsableByteArray buffer) throws ParserException { + try { + int formatTag = buffer.readLittleEndianUnsignedShort(); + if (formatTag == WAVE_FORMAT_PCM) { + return true; + } else if (formatTag == WAVE_FORMAT_EXTENSIBLE) { + buffer.setPosition(WAVE_FORMAT_SIZE + 6); // unionSamples(2), channelMask(4) + return buffer.readLong() == WAVE_SUBFORMAT_PCM.getMostSignificantBits() + && buffer.readLong() == WAVE_SUBFORMAT_PCM.getLeastSignificantBits(); + } else { + return false; + } + } catch (ArrayIndexOutOfBoundsException e) { + throw new ParserException("Error parsing MS/ACM codec private"); + } + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/Sniffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/Sniffer.java new file mode 100644 index 0000000000..f84cd084a3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/Sniffer.java @@ -0,0 +1,114 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mkv; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; + +/** + * Utility class that peeks from the input stream in order to determine whether it appears to be + * compatible input for this extractor. + */ +/* package */ final class Sniffer { + + /** + * The number of bytes to search for a valid header in {@link #sniff(ExtractorInput)}. + */ + private static final int SEARCH_LENGTH = 1024; + private static final int ID_EBML = 0x1A45DFA3; + + private final ParsableByteArray scratch; + private int peekLength; + + public Sniffer() { + scratch = new ParsableByteArray(8); + } + + /** + * @see com.google.android.exoplayer2.extractor.Extractor#sniff(ExtractorInput) + */ + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + long inputLength = input.getLength(); + int bytesToSearch = (int) (inputLength == C.LENGTH_UNSET || inputLength > SEARCH_LENGTH + ? SEARCH_LENGTH : inputLength); + // Find four bytes equal to ID_EBML near the start of the input. + input.peekFully(scratch.data, 0, 4); + long tag = scratch.readUnsignedInt(); + peekLength = 4; + while (tag != ID_EBML) { + if (++peekLength == bytesToSearch) { + return false; + } + input.peekFully(scratch.data, 0, 1); + tag = (tag << 8) & 0xFFFFFF00; + tag |= scratch.data[0] & 0xFF; + } + + // Read the size of the EBML header and make sure it is within the stream. + long headerSize = readUint(input); + long headerStart = peekLength; + if (headerSize == Long.MIN_VALUE + || (inputLength != C.LENGTH_UNSET && headerStart + headerSize >= inputLength)) { + return false; + } + + // Read the payload elements in the EBML header. + while (peekLength < headerStart + headerSize) { + long id = readUint(input); + if (id == Long.MIN_VALUE) { + return false; + } + long size = readUint(input); + if (size < 0 || size > Integer.MAX_VALUE) { + return false; + } + if (size != 0) { + int sizeInt = (int) size; + input.advancePeekPosition(sizeInt); + peekLength += sizeInt; + } + } + return peekLength == headerStart + headerSize; + } + + /** + * Peeks a variable-length unsigned EBML integer from the input. + */ + private long readUint(ExtractorInput input) throws IOException, InterruptedException { + input.peekFully(scratch.data, 0, 1); + int value = scratch.data[0] & 0xFF; + if (value == 0) { + return Long.MIN_VALUE; + } + int mask = 0x80; + int length = 0; + while ((value & mask) == 0) { + mask >>= 1; + length++; + } + value &= ~mask; + input.peekFully(scratch.data, 1, length); + for (int i = 0; i < length; i++) { + value <<= 8; + value += scratch.data[i + 1] & 0xFF; + } + peekLength += length + 1; + return value; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/VarintReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/VarintReader.java new file mode 100644 index 0000000000..8a8d572ea5 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mkv/VarintReader.java @@ -0,0 +1,155 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mkv; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import java.io.EOFException; +import java.io.IOException; + +/** + * Reads EBML variable-length integers (varints) from an {@link ExtractorInput}. + */ +/* package */ final class VarintReader { + + private static final int STATE_BEGIN_READING = 0; + private static final int STATE_READ_CONTENTS = 1; + + /** + * The first byte of a variable-length integer (varint) will have one of these bit masks + * indicating the total length in bytes. + * + *

{@code 0x80} is a one-byte integer, {@code 0x40} is two bytes, and so on up to eight bytes. + */ + private static final long[] VARINT_LENGTH_MASKS = new long[] { + 0x80L, 0x40L, 0x20L, 0x10L, 0x08L, 0x04L, 0x02L, 0x01L + }; + + private final byte[] scratch; + + private int state; + private int length; + + public VarintReader() { + scratch = new byte[8]; + } + + /** + * Resets the reader to start reading a new variable-length integer. + */ + public void reset() { + state = STATE_BEGIN_READING; + length = 0; + } + + /** + * Reads an EBML variable-length integer (varint) from an {@link ExtractorInput} such that + * reading can be resumed later if an error occurs having read only some of it. + *

+ * If an value is successfully read, then the reader will automatically reset itself ready to + * read another value. + *

+ * If an {@link IOException} or {@link InterruptedException} is throw, the read can be resumed + * later by calling this method again, passing an {@link ExtractorInput} providing data starting + * where the previous one left off. + * + * @param input The {@link ExtractorInput} from which the integer should be read. + * @param allowEndOfInput True if encountering the end of the input having read no data is + * allowed, and should result in {@link C#RESULT_END_OF_INPUT} being returned. False if it + * should be considered an error, causing an {@link EOFException} to be thrown. + * @param removeLengthMask Removes the variable-length integer length mask from the value. + * @param maximumAllowedLength Maximum allowed length of the variable integer to be read. + * @return The read value, or {@link C#RESULT_END_OF_INPUT} if {@code allowEndOfStream} is true + * and the end of the input was encountered, or {@link C#RESULT_MAX_LENGTH_EXCEEDED} if the + * length of the varint exceeded maximumAllowedLength. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + public long readUnsignedVarint(ExtractorInput input, boolean allowEndOfInput, + boolean removeLengthMask, int maximumAllowedLength) throws IOException, InterruptedException { + if (state == STATE_BEGIN_READING) { + // Read the first byte to establish the length. + if (!input.readFully(scratch, 0, 1, allowEndOfInput)) { + return C.RESULT_END_OF_INPUT; + } + int firstByte = scratch[0] & 0xFF; + length = parseUnsignedVarintLength(firstByte); + if (length == C.LENGTH_UNSET) { + throw new IllegalStateException("No valid varint length mask found"); + } + state = STATE_READ_CONTENTS; + } + + if (length > maximumAllowedLength) { + state = STATE_BEGIN_READING; + return C.RESULT_MAX_LENGTH_EXCEEDED; + } + + if (length != 1) { + // Read the remaining bytes. + input.readFully(scratch, 1, length - 1); + } + + state = STATE_BEGIN_READING; + return assembleVarint(scratch, length, removeLengthMask); + } + + /** + * Returns the number of bytes occupied by the most recently parsed varint. + */ + public int getLastLength() { + return length; + } + + /** + * Parses and the length of the varint given the first byte. + * + * @param firstByte First byte of the varint. + * @return Length of the varint beginning with the given byte if it was valid, + * {@link C#LENGTH_UNSET} otherwise. + */ + public static int parseUnsignedVarintLength(int firstByte) { + int varIntLength = C.LENGTH_UNSET; + for (int i = 0; i < VARINT_LENGTH_MASKS.length; i++) { + if ((VARINT_LENGTH_MASKS[i] & firstByte) != 0) { + varIntLength = i + 1; + break; + } + } + return varIntLength; + } + + /** + * Assemble a varint from the given byte array. + * + * @param varintBytes Bytes that make up the varint. + * @param varintLength Length of the varint to assemble. + * @param removeLengthMask Removes the variable-length integer length mask from the value. + * @return Parsed and assembled varint. + */ + public static long assembleVarint(byte[] varintBytes, int varintLength, + boolean removeLengthMask) { + long varint = varintBytes[0] & 0xFFL; + if (removeLengthMask) { + varint &= ~VARINT_LENGTH_MASKS[varintLength - 1]; + } + for (int i = 1; i < varintLength; i++) { + varint = (varint << 8) | (varintBytes[i] & 0xFFL); + } + return varint; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/ConstantBitrateSeeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/ConstantBitrateSeeker.java new file mode 100644 index 0000000000..1a442110e3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/ConstantBitrateSeeker.java @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp3; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ConstantBitrateSeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.MpegAudioHeader; + +/** + * MP3 seeker that doesn't rely on metadata and seeks assuming the source has a constant bitrate. + */ +/* package */ final class ConstantBitrateSeeker extends ConstantBitrateSeekMap implements Seeker { + + /** + * @param inputLength The length of the stream in bytes, or {@link C#LENGTH_UNSET} if unknown. + * @param firstFramePosition The position of the first frame in the stream. + * @param mpegAudioHeader The MPEG audio header associated with the first frame. + */ + public ConstantBitrateSeeker( + long inputLength, long firstFramePosition, MpegAudioHeader mpegAudioHeader) { + super(inputLength, firstFramePosition, mpegAudioHeader.bitrate, mpegAudioHeader.frameSize); + } + + @Override + public long getTimeUs(long position) { + return getTimeUsAtPosition(position); + } + + @Override + public long getDataEndPosition() { + return C.POSITION_UNSET; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/MlltSeeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/MlltSeeker.java new file mode 100644 index 0000000000..662ded4ec3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/MlltSeeker.java @@ -0,0 +1,125 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp3; + +import android.util.Pair; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekPoint; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.MlltFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** MP3 seeker that uses metadata from an {@link MlltFrame}. */ +/* package */ final class MlltSeeker implements Seeker { + + /** + * Returns an {@link MlltSeeker} for seeking in the stream. + * + * @param firstFramePosition The position of the start of the first frame in the stream. + * @param mlltFrame The MLLT frame with seeking metadata. + * @return An {@link MlltSeeker} for seeking in the stream. + */ + public static MlltSeeker create(long firstFramePosition, MlltFrame mlltFrame) { + int referenceCount = mlltFrame.bytesDeviations.length; + long[] referencePositions = new long[1 + referenceCount]; + long[] referenceTimesMs = new long[1 + referenceCount]; + referencePositions[0] = firstFramePosition; + referenceTimesMs[0] = 0; + long position = firstFramePosition; + long timeMs = 0; + for (int i = 1; i <= referenceCount; i++) { + position += mlltFrame.bytesBetweenReference + mlltFrame.bytesDeviations[i - 1]; + timeMs += mlltFrame.millisecondsBetweenReference + mlltFrame.millisecondsDeviations[i - 1]; + referencePositions[i] = position; + referenceTimesMs[i] = timeMs; + } + return new MlltSeeker(referencePositions, referenceTimesMs); + } + + private final long[] referencePositions; + private final long[] referenceTimesMs; + private final long durationUs; + + private MlltSeeker(long[] referencePositions, long[] referenceTimesMs) { + this.referencePositions = referencePositions; + this.referenceTimesMs = referenceTimesMs; + // Use the last reference point as the duration, as extrapolating variable bitrate at the end of + // the stream may give a large error. + durationUs = C.msToUs(referenceTimesMs[referenceTimesMs.length - 1]); + } + + @Override + public boolean isSeekable() { + return true; + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + timeUs = Util.constrainValue(timeUs, 0, durationUs); + Pair timeMsAndPosition = + linearlyInterpolate(C.usToMs(timeUs), referenceTimesMs, referencePositions); + timeUs = C.msToUs(timeMsAndPosition.first); + long position = timeMsAndPosition.second; + return new SeekPoints(new SeekPoint(timeUs, position)); + } + + @Override + public long getTimeUs(long position) { + Pair positionAndTimeMs = + linearlyInterpolate(position, referencePositions, referenceTimesMs); + return C.msToUs(positionAndTimeMs.second); + } + + @Override + public long getDurationUs() { + return durationUs; + } + + /** + * Given a set of reference points as coordinates in {@code xReferences} and {@code yReferences} + * and an x-axis value, linearly interpolates between corresponding reference points to give a + * y-axis value. + * + * @param x The x-axis value for which a y-axis value is needed. + * @param xReferences x coordinates of reference points. + * @param yReferences y coordinates of reference points. + * @return The linearly interpolated y-axis value. + */ + private static Pair linearlyInterpolate( + long x, long[] xReferences, long[] yReferences) { + int previousReferenceIndex = + Util.binarySearchFloor(xReferences, x, /* inclusive= */ true, /* stayInBounds= */ true); + long xPreviousReference = xReferences[previousReferenceIndex]; + long yPreviousReference = yReferences[previousReferenceIndex]; + int nextReferenceIndex = previousReferenceIndex + 1; + if (nextReferenceIndex == xReferences.length) { + return Pair.create(xPreviousReference, yPreviousReference); + } else { + long xNextReference = xReferences[nextReferenceIndex]; + long yNextReference = yReferences[nextReferenceIndex]; + double proportion = + xNextReference == xPreviousReference + ? 0.0 + : ((double) x - xPreviousReference) / (xNextReference - xPreviousReference); + long y = (long) (proportion * (yNextReference - yPreviousReference)) + yPreviousReference; + return Pair.create(x, y); + } + } + + @Override + public long getDataEndPosition() { + return C.POSITION_UNSET; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/Mp3Extractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/Mp3Extractor.java new file mode 100644 index 0000000000..2829a1e519 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/Mp3Extractor.java @@ -0,0 +1,482 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp3; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.GaplessInfoHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Id3Peeker; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.MpegAudioHeader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp3.Seeker.UnseekableSeeker; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder.FramePredicate; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.MlltFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.EOFException; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Extracts data from the MP3 container format. + */ +public final class Mp3Extractor implements Extractor { + + /** Factory for {@link Mp3Extractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new Mp3Extractor()}; + + /** + * Flags controlling the behavior of the extractor. Possible flag values are {@link + * #FLAG_ENABLE_CONSTANT_BITRATE_SEEKING} and {@link #FLAG_DISABLE_ID3_METADATA}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {FLAG_ENABLE_CONSTANT_BITRATE_SEEKING, FLAG_DISABLE_ID3_METADATA}) + public @interface Flags {} + /** + * Flag to force enable seeking using a constant bitrate assumption in cases where seeking would + * otherwise not be possible. + */ + public static final int FLAG_ENABLE_CONSTANT_BITRATE_SEEKING = 1; + /** + * Flag to disable parsing of ID3 metadata. Can be set to save memory if ID3 metadata is not + * required. + */ + public static final int FLAG_DISABLE_ID3_METADATA = 2; + + /** Predicate that matches ID3 frames containing only required gapless/seeking metadata. */ + private static final FramePredicate REQUIRED_ID3_FRAME_PREDICATE = + (majorVersion, id0, id1, id2, id3) -> + ((id0 == 'C' && id1 == 'O' && id2 == 'M' && (id3 == 'M' || majorVersion == 2)) + || (id0 == 'M' && id1 == 'L' && id2 == 'L' && (id3 == 'T' || majorVersion == 2))); + + /** + * The maximum number of bytes to search when synchronizing, before giving up. + */ + private static final int MAX_SYNC_BYTES = 128 * 1024; + /** + * The maximum number of bytes to peek when sniffing, excluding the ID3 header, before giving up. + */ + private static final int MAX_SNIFF_BYTES = 16 * 1024; + /** + * Maximum length of data read into {@link #scratch}. + */ + private static final int SCRATCH_LENGTH = 10; + + /** + * Mask that includes the audio header values that must match between frames. + */ + private static final int MPEG_AUDIO_HEADER_MASK = 0xFFFE0C00; + + private static final int SEEK_HEADER_XING = 0x58696e67; + private static final int SEEK_HEADER_INFO = 0x496e666f; + private static final int SEEK_HEADER_VBRI = 0x56425249; + private static final int SEEK_HEADER_UNSET = 0; + + @Flags private final int flags; + private final long forcedFirstSampleTimestampUs; + private final ParsableByteArray scratch; + private final MpegAudioHeader synchronizedHeader; + private final GaplessInfoHolder gaplessInfoHolder; + private final Id3Peeker id3Peeker; + + // Extractor outputs. + private ExtractorOutput extractorOutput; + private TrackOutput trackOutput; + + private int synchronizedHeaderData; + + private Metadata metadata; + @Nullable private Seeker seeker; + private boolean disableSeeking; + private long basisTimeUs; + private long samplesRead; + private long firstSamplePosition; + private int sampleBytesRemaining; + + public Mp3Extractor() { + this(0); + } + + /** + * @param flags Flags that control the extractor's behavior. + */ + public Mp3Extractor(@Flags int flags) { + this(flags, C.TIME_UNSET); + } + + /** + * @param flags Flags that control the extractor's behavior. + * @param forcedFirstSampleTimestampUs A timestamp to force for the first sample, or + * {@link C#TIME_UNSET} if forcing is not required. + */ + public Mp3Extractor(@Flags int flags, long forcedFirstSampleTimestampUs) { + this.flags = flags; + this.forcedFirstSampleTimestampUs = forcedFirstSampleTimestampUs; + scratch = new ParsableByteArray(SCRATCH_LENGTH); + synchronizedHeader = new MpegAudioHeader(); + gaplessInfoHolder = new GaplessInfoHolder(); + basisTimeUs = C.TIME_UNSET; + id3Peeker = new Id3Peeker(); + } + + // Extractor implementation. + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + return synchronize(input, true); + } + + @Override + public void init(ExtractorOutput output) { + extractorOutput = output; + trackOutput = extractorOutput.track(0, C.TRACK_TYPE_AUDIO); + extractorOutput.endTracks(); + } + + @Override + public void seek(long position, long timeUs) { + synchronizedHeaderData = 0; + basisTimeUs = C.TIME_UNSET; + samplesRead = 0; + sampleBytesRemaining = 0; + } + + @Override + public void release() { + // Do nothing + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + if (synchronizedHeaderData == 0) { + try { + synchronize(input, false); + } catch (EOFException e) { + return RESULT_END_OF_INPUT; + } + } + if (seeker == null) { + // Read past any seek frame and set the seeker based on metadata or a seek frame. Metadata + // takes priority as it can provide greater precision. + Seeker seekFrameSeeker = maybeReadSeekFrame(input); + Seeker metadataSeeker = maybeHandleSeekMetadata(metadata, input.getPosition()); + + if (disableSeeking) { + seeker = new UnseekableSeeker(); + } else { + if (metadataSeeker != null) { + seeker = metadataSeeker; + } else if (seekFrameSeeker != null) { + seeker = seekFrameSeeker; + } + if (seeker == null + || (!seeker.isSeekable() && (flags & FLAG_ENABLE_CONSTANT_BITRATE_SEEKING) != 0)) { + seeker = getConstantBitrateSeeker(input); + } + } + extractorOutput.seekMap(seeker); + trackOutput.format( + Format.createAudioSampleFormat( + /* id= */ null, + synchronizedHeader.mimeType, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + MpegAudioHeader.MAX_FRAME_SIZE_BYTES, + synchronizedHeader.channels, + synchronizedHeader.sampleRate, + /* pcmEncoding= */ Format.NO_VALUE, + gaplessInfoHolder.encoderDelay, + gaplessInfoHolder.encoderPadding, + /* initializationData= */ null, + /* drmInitData= */ null, + /* selectionFlags= */ 0, + /* language= */ null, + (flags & FLAG_DISABLE_ID3_METADATA) != 0 ? null : metadata)); + firstSamplePosition = input.getPosition(); + } else if (firstSamplePosition != 0) { + long inputPosition = input.getPosition(); + if (inputPosition < firstSamplePosition) { + // Skip past the seek frame. + input.skipFully((int) (firstSamplePosition - inputPosition)); + } + } + return readSample(input); + } + + /** + * Disables the extractor from being able to seek through the media. + * + *

Please note that this needs to be called before {@link #read}. + */ + public void disableSeeking() { + disableSeeking = true; + } + + // Internal methods. + + private int readSample(ExtractorInput extractorInput) throws IOException, InterruptedException { + if (sampleBytesRemaining == 0) { + extractorInput.resetPeekPosition(); + if (peekEndOfStreamOrHeader(extractorInput)) { + return RESULT_END_OF_INPUT; + } + scratch.setPosition(0); + int sampleHeaderData = scratch.readInt(); + if (!headersMatch(sampleHeaderData, synchronizedHeaderData) + || MpegAudioHeader.getFrameSize(sampleHeaderData) == C.LENGTH_UNSET) { + // We have lost synchronization, so attempt to resynchronize starting at the next byte. + extractorInput.skipFully(1); + synchronizedHeaderData = 0; + return RESULT_CONTINUE; + } + MpegAudioHeader.populateHeader(sampleHeaderData, synchronizedHeader); + if (basisTimeUs == C.TIME_UNSET) { + basisTimeUs = seeker.getTimeUs(extractorInput.getPosition()); + if (forcedFirstSampleTimestampUs != C.TIME_UNSET) { + long embeddedFirstSampleTimestampUs = seeker.getTimeUs(0); + basisTimeUs += forcedFirstSampleTimestampUs - embeddedFirstSampleTimestampUs; + } + } + sampleBytesRemaining = synchronizedHeader.frameSize; + } + int bytesAppended = trackOutput.sampleData(extractorInput, sampleBytesRemaining, true); + if (bytesAppended == C.RESULT_END_OF_INPUT) { + return RESULT_END_OF_INPUT; + } + sampleBytesRemaining -= bytesAppended; + if (sampleBytesRemaining > 0) { + return RESULT_CONTINUE; + } + long timeUs = basisTimeUs + (samplesRead * C.MICROS_PER_SECOND / synchronizedHeader.sampleRate); + trackOutput.sampleMetadata(timeUs, C.BUFFER_FLAG_KEY_FRAME, synchronizedHeader.frameSize, 0, + null); + samplesRead += synchronizedHeader.samplesPerFrame; + sampleBytesRemaining = 0; + return RESULT_CONTINUE; + } + + private boolean synchronize(ExtractorInput input, boolean sniffing) + throws IOException, InterruptedException { + int validFrameCount = 0; + int candidateSynchronizedHeaderData = 0; + int peekedId3Bytes = 0; + int searchedBytes = 0; + int searchLimitBytes = sniffing ? MAX_SNIFF_BYTES : MAX_SYNC_BYTES; + input.resetPeekPosition(); + if (input.getPosition() == 0) { + // We need to parse enough ID3 metadata to retrieve any gapless/seeking playback information + // even if ID3 metadata parsing is disabled. + boolean parseAllId3Frames = (flags & FLAG_DISABLE_ID3_METADATA) == 0; + Id3Decoder.FramePredicate id3FramePredicate = + parseAllId3Frames ? null : REQUIRED_ID3_FRAME_PREDICATE; + metadata = id3Peeker.peekId3Data(input, id3FramePredicate); + if (metadata != null) { + gaplessInfoHolder.setFromMetadata(metadata); + } + peekedId3Bytes = (int) input.getPeekPosition(); + if (!sniffing) { + input.skipFully(peekedId3Bytes); + } + } + while (true) { + if (peekEndOfStreamOrHeader(input)) { + if (validFrameCount > 0) { + // We reached the end of the stream but found at least one valid frame. + break; + } + throw new EOFException(); + } + scratch.setPosition(0); + int headerData = scratch.readInt(); + int frameSize; + if ((candidateSynchronizedHeaderData != 0 + && !headersMatch(headerData, candidateSynchronizedHeaderData)) + || (frameSize = MpegAudioHeader.getFrameSize(headerData)) == C.LENGTH_UNSET) { + // The header doesn't match the candidate header or is invalid. Try the next byte offset. + if (searchedBytes++ == searchLimitBytes) { + if (!sniffing) { + throw new ParserException("Searched too many bytes."); + } + return false; + } + validFrameCount = 0; + candidateSynchronizedHeaderData = 0; + if (sniffing) { + input.resetPeekPosition(); + input.advancePeekPosition(peekedId3Bytes + searchedBytes); + } else { + input.skipFully(1); + } + } else { + // The header matches the candidate header and/or is valid. + validFrameCount++; + if (validFrameCount == 1) { + MpegAudioHeader.populateHeader(headerData, synchronizedHeader); + candidateSynchronizedHeaderData = headerData; + } else if (validFrameCount == 4) { + break; + } + input.advancePeekPosition(frameSize - 4); + } + } + // Prepare to read the synchronized frame. + if (sniffing) { + input.skipFully(peekedId3Bytes + searchedBytes); + } else { + input.resetPeekPosition(); + } + synchronizedHeaderData = candidateSynchronizedHeaderData; + return true; + } + + /** + * Returns whether the extractor input is peeking the end of the stream. If {@code false}, + * populates the scratch buffer with the next four bytes. + */ + private boolean peekEndOfStreamOrHeader(ExtractorInput extractorInput) + throws IOException, InterruptedException { + if (seeker != null) { + long dataEndPosition = seeker.getDataEndPosition(); + if (dataEndPosition != C.POSITION_UNSET + && extractorInput.getPeekPosition() > dataEndPosition - 4) { + return true; + } + } + try { + return !extractorInput.peekFully( + scratch.data, /* offset= */ 0, /* length= */ 4, /* allowEndOfInput= */ true); + } catch (EOFException e) { + return true; + } + } + + /** + * Consumes the next frame from the {@code input} if it contains VBRI or Xing seeking metadata, + * returning a {@link Seeker} if the metadata was present and valid, or {@code null} otherwise. + * After this method returns, the input position is the start of the first frame of audio. + * + * @param input The {@link ExtractorInput} from which to read. + * @return A {@link Seeker} if seeking metadata was present and valid, or {@code null} otherwise. + * @throws IOException Thrown if there was an error reading from the stream. Not expected if the + * next two frames were already peeked during synchronization. + * @throws InterruptedException Thrown if reading from the stream was interrupted. Not expected if + * the next two frames were already peeked during synchronization. + */ + private Seeker maybeReadSeekFrame(ExtractorInput input) throws IOException, InterruptedException { + ParsableByteArray frame = new ParsableByteArray(synchronizedHeader.frameSize); + input.peekFully(frame.data, 0, synchronizedHeader.frameSize); + int xingBase = (synchronizedHeader.version & 1) != 0 + ? (synchronizedHeader.channels != 1 ? 36 : 21) // MPEG 1 + : (synchronizedHeader.channels != 1 ? 21 : 13); // MPEG 2 or 2.5 + int seekHeader = getSeekFrameHeader(frame, xingBase); + Seeker seeker; + if (seekHeader == SEEK_HEADER_XING || seekHeader == SEEK_HEADER_INFO) { + seeker = XingSeeker.create(input.getLength(), input.getPosition(), synchronizedHeader, frame); + if (seeker != null && !gaplessInfoHolder.hasGaplessInfo()) { + // If there is a Xing header, read gapless playback metadata at a fixed offset. + input.resetPeekPosition(); + input.advancePeekPosition(xingBase + 141); + input.peekFully(scratch.data, 0, 3); + scratch.setPosition(0); + gaplessInfoHolder.setFromXingHeaderValue(scratch.readUnsignedInt24()); + } + input.skipFully(synchronizedHeader.frameSize); + if (seeker != null && !seeker.isSeekable() && seekHeader == SEEK_HEADER_INFO) { + // Fall back to constant bitrate seeking for Info headers missing a table of contents. + return getConstantBitrateSeeker(input); + } + } else if (seekHeader == SEEK_HEADER_VBRI) { + seeker = VbriSeeker.create(input.getLength(), input.getPosition(), synchronizedHeader, frame); + input.skipFully(synchronizedHeader.frameSize); + } else { // seekerHeader == SEEK_HEADER_UNSET + // This frame doesn't contain seeking information, so reset the peek position. + seeker = null; + input.resetPeekPosition(); + } + return seeker; + } + + /** + * Peeks the next frame and returns a {@link ConstantBitrateSeeker} based on its bitrate. + */ + private Seeker getConstantBitrateSeeker(ExtractorInput input) + throws IOException, InterruptedException { + input.peekFully(scratch.data, 0, 4); + scratch.setPosition(0); + MpegAudioHeader.populateHeader(scratch.readInt(), synchronizedHeader); + return new ConstantBitrateSeeker(input.getLength(), input.getPosition(), synchronizedHeader); + } + + /** + * Returns whether the headers match in those bits masked by {@link #MPEG_AUDIO_HEADER_MASK}. + */ + private static boolean headersMatch(int headerA, long headerB) { + return (headerA & MPEG_AUDIO_HEADER_MASK) == (headerB & MPEG_AUDIO_HEADER_MASK); + } + + /** + * Returns {@link #SEEK_HEADER_XING}, {@link #SEEK_HEADER_INFO} or {@link #SEEK_HEADER_VBRI} if + * the provided {@code frame} may have seeking metadata, or {@link #SEEK_HEADER_UNSET} otherwise. + * If seeking metadata is present, {@code frame}'s position is advanced past the header. + */ + private static int getSeekFrameHeader(ParsableByteArray frame, int xingBase) { + if (frame.limit() >= xingBase + 4) { + frame.setPosition(xingBase); + int headerData = frame.readInt(); + if (headerData == SEEK_HEADER_XING || headerData == SEEK_HEADER_INFO) { + return headerData; + } + } + if (frame.limit() >= 40) { + frame.setPosition(36); // MPEG audio header (4 bytes) + 32 bytes. + if (frame.readInt() == SEEK_HEADER_VBRI) { + return SEEK_HEADER_VBRI; + } + } + return SEEK_HEADER_UNSET; + } + + @Nullable + private static MlltSeeker maybeHandleSeekMetadata(Metadata metadata, long firstFramePosition) { + if (metadata != null) { + int length = metadata.length(); + for (int i = 0; i < length; i++) { + Metadata.Entry entry = metadata.get(i); + if (entry instanceof MlltFrame) { + return MlltSeeker.create(firstFramePosition, (MlltFrame) entry); + } + } + } + return null; + } + + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/Seeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/Seeker.java new file mode 100644 index 0000000000..da0306cc60 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/Seeker.java @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp3; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; + +/** + * {@link SeekMap} that provides the end position of audio data and also allows mapping from + * position (byte offset) back to time, which can be used to work out the new sample basis timestamp + * after seeking and resynchronization. + */ +/* package */ interface Seeker extends SeekMap { + + /** + * Maps a position (byte offset) to a corresponding sample timestamp. + * + * @param position A seek position (byte offset) relative to the start of the stream. + * @return The corresponding timestamp of the next sample to be read, in microseconds. + */ + long getTimeUs(long position); + + /** + * Returns the position (byte offset) in the stream that is immediately after audio data, or + * {@link C#POSITION_UNSET} if not known. + */ + long getDataEndPosition(); + + /** A {@link Seeker} that does not support seeking through audio data. */ + /* package */ class UnseekableSeeker extends SeekMap.Unseekable implements Seeker { + + public UnseekableSeeker() { + super(/* durationUs= */ C.TIME_UNSET); + } + + @Override + public long getTimeUs(long position) { + return 0; + } + + @Override + public long getDataEndPosition() { + // Position unset as we do not know the data end position. Note that returning 0 doesn't work. + return C.POSITION_UNSET; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/VbriSeeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/VbriSeeker.java new file mode 100644 index 0000000000..8bb142f496 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/VbriSeeker.java @@ -0,0 +1,136 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp3; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.MpegAudioHeader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekPoint; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** MP3 seeker that uses metadata from a VBRI header. */ +/* package */ final class VbriSeeker implements Seeker { + + private static final String TAG = "VbriSeeker"; + + /** + * Returns a {@link VbriSeeker} for seeking in the stream, if required information is present. + * Returns {@code null} if not. On returning, {@code frame}'s position is not specified so the + * caller should reset it. + * + * @param inputLength The length of the stream in bytes, or {@link C#LENGTH_UNSET} if unknown. + * @param position The position of the start of this frame in the stream. + * @param mpegAudioHeader The MPEG audio header associated with the frame. + * @param frame The data in this audio frame, with its position set to immediately after the + * 'VBRI' tag. + * @return A {@link VbriSeeker} for seeking in the stream, or {@code null} if the required + * information is not present. + */ + public static @Nullable VbriSeeker create( + long inputLength, long position, MpegAudioHeader mpegAudioHeader, ParsableByteArray frame) { + frame.skipBytes(10); + int numFrames = frame.readInt(); + if (numFrames <= 0) { + return null; + } + int sampleRate = mpegAudioHeader.sampleRate; + long durationUs = Util.scaleLargeTimestamp(numFrames, + C.MICROS_PER_SECOND * (sampleRate >= 32000 ? 1152 : 576), sampleRate); + int entryCount = frame.readUnsignedShort(); + int scale = frame.readUnsignedShort(); + int entrySize = frame.readUnsignedShort(); + frame.skipBytes(2); + + long minPosition = position + mpegAudioHeader.frameSize; + // Read table of contents entries. + long[] timesUs = new long[entryCount]; + long[] positions = new long[entryCount]; + for (int index = 0; index < entryCount; index++) { + timesUs[index] = (index * durationUs) / entryCount; + // Ensure positions do not fall within the frame containing the VBRI header. This constraint + // will normally only apply to the first entry in the table. + positions[index] = Math.max(position, minPosition); + int segmentSize; + switch (entrySize) { + case 1: + segmentSize = frame.readUnsignedByte(); + break; + case 2: + segmentSize = frame.readUnsignedShort(); + break; + case 3: + segmentSize = frame.readUnsignedInt24(); + break; + case 4: + segmentSize = frame.readUnsignedIntToInt(); + break; + default: + return null; + } + position += segmentSize * scale; + } + if (inputLength != C.LENGTH_UNSET && inputLength != position) { + Log.w(TAG, "VBRI data size mismatch: " + inputLength + ", " + position); + } + return new VbriSeeker(timesUs, positions, durationUs, /* dataEndPosition= */ position); + } + + private final long[] timesUs; + private final long[] positions; + private final long durationUs; + private final long dataEndPosition; + + private VbriSeeker(long[] timesUs, long[] positions, long durationUs, long dataEndPosition) { + this.timesUs = timesUs; + this.positions = positions; + this.durationUs = durationUs; + this.dataEndPosition = dataEndPosition; + } + + @Override + public boolean isSeekable() { + return true; + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + int tableIndex = Util.binarySearchFloor(timesUs, timeUs, true, true); + SeekPoint seekPoint = new SeekPoint(timesUs[tableIndex], positions[tableIndex]); + if (seekPoint.timeUs >= timeUs || tableIndex == timesUs.length - 1) { + return new SeekPoints(seekPoint); + } else { + SeekPoint nextSeekPoint = new SeekPoint(timesUs[tableIndex + 1], positions[tableIndex + 1]); + return new SeekPoints(seekPoint, nextSeekPoint); + } + } + + @Override + public long getTimeUs(long position) { + return timesUs[Util.binarySearchFloor(positions, position, true, true)]; + } + + @Override + public long getDurationUs() { + return durationUs; + } + + @Override + public long getDataEndPosition() { + return dataEndPosition; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/XingSeeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/XingSeeker.java new file mode 100644 index 0000000000..61568aac93 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp3/XingSeeker.java @@ -0,0 +1,188 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp3; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.MpegAudioHeader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekPoint; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** MP3 seeker that uses metadata from a Xing header. */ +/* package */ final class XingSeeker implements Seeker { + + private static final String TAG = "XingSeeker"; + + /** + * Returns a {@link XingSeeker} for seeking in the stream, if required information is present. + * Returns {@code null} if not. On returning, {@code frame}'s position is not specified so the + * caller should reset it. + * + * @param inputLength The length of the stream in bytes, or {@link C#LENGTH_UNSET} if unknown. + * @param position The position of the start of this frame in the stream. + * @param mpegAudioHeader The MPEG audio header associated with the frame. + * @param frame The data in this audio frame, with its position set to immediately after the + * 'Xing' or 'Info' tag. + * @return A {@link XingSeeker} for seeking in the stream, or {@code null} if the required + * information is not present. + */ + public static @Nullable XingSeeker create( + long inputLength, long position, MpegAudioHeader mpegAudioHeader, ParsableByteArray frame) { + int samplesPerFrame = mpegAudioHeader.samplesPerFrame; + int sampleRate = mpegAudioHeader.sampleRate; + + int flags = frame.readInt(); + int frameCount; + if ((flags & 0x01) != 0x01 || (frameCount = frame.readUnsignedIntToInt()) == 0) { + // If the frame count is missing/invalid, the header can't be used to determine the duration. + return null; + } + long durationUs = Util.scaleLargeTimestamp(frameCount, samplesPerFrame * C.MICROS_PER_SECOND, + sampleRate); + if ((flags & 0x06) != 0x06) { + // If the size in bytes or table of contents is missing, the stream is not seekable. + return new XingSeeker(position, mpegAudioHeader.frameSize, durationUs); + } + + long dataSize = frame.readUnsignedIntToInt(); + long[] tableOfContents = new long[100]; + for (int i = 0; i < 100; i++) { + tableOfContents[i] = frame.readUnsignedByte(); + } + + // TODO: Handle encoder delay and padding in 3 bytes offset by xingBase + 213 bytes: + // delay = (frame.readUnsignedByte() << 4) + (frame.readUnsignedByte() >> 4); + // padding = ((frame.readUnsignedByte() & 0x0F) << 8) + frame.readUnsignedByte(); + + if (inputLength != C.LENGTH_UNSET && inputLength != position + dataSize) { + Log.w(TAG, "XING data size mismatch: " + inputLength + ", " + (position + dataSize)); + } + return new XingSeeker( + position, mpegAudioHeader.frameSize, durationUs, dataSize, tableOfContents); + } + + private final long dataStartPosition; + private final int xingFrameSize; + private final long durationUs; + /** Data size, including the XING frame. */ + private final long dataSize; + + private final long dataEndPosition; + /** + * Entries are in the range [0, 255], but are stored as long integers for convenience. Null if the + * table of contents was missing from the header, in which case seeking is not be supported. + */ + @Nullable private final long[] tableOfContents; + + private XingSeeker(long dataStartPosition, int xingFrameSize, long durationUs) { + this( + dataStartPosition, + xingFrameSize, + durationUs, + /* dataSize= */ C.LENGTH_UNSET, + /* tableOfContents= */ null); + } + + private XingSeeker( + long dataStartPosition, + int xingFrameSize, + long durationUs, + long dataSize, + @Nullable long[] tableOfContents) { + this.dataStartPosition = dataStartPosition; + this.xingFrameSize = xingFrameSize; + this.durationUs = durationUs; + this.tableOfContents = tableOfContents; + this.dataSize = dataSize; + dataEndPosition = dataSize == C.LENGTH_UNSET ? C.POSITION_UNSET : dataStartPosition + dataSize; + } + + @Override + public boolean isSeekable() { + return tableOfContents != null; + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + if (!isSeekable()) { + return new SeekPoints(new SeekPoint(0, dataStartPosition + xingFrameSize)); + } + timeUs = Util.constrainValue(timeUs, 0, durationUs); + double percent = (timeUs * 100d) / durationUs; + double scaledPosition; + if (percent <= 0) { + scaledPosition = 0; + } else if (percent >= 100) { + scaledPosition = 256; + } else { + int prevTableIndex = (int) percent; + long[] tableOfContents = Assertions.checkNotNull(this.tableOfContents); + double prevScaledPosition = tableOfContents[prevTableIndex]; + double nextScaledPosition = prevTableIndex == 99 ? 256 : tableOfContents[prevTableIndex + 1]; + // Linearly interpolate between the two scaled positions. + double interpolateFraction = percent - prevTableIndex; + scaledPosition = prevScaledPosition + + (interpolateFraction * (nextScaledPosition - prevScaledPosition)); + } + long positionOffset = Math.round((scaledPosition / 256) * dataSize); + // Ensure returned positions skip the frame containing the XING header. + positionOffset = Util.constrainValue(positionOffset, xingFrameSize, dataSize - 1); + return new SeekPoints(new SeekPoint(timeUs, dataStartPosition + positionOffset)); + } + + @Override + public long getTimeUs(long position) { + long positionOffset = position - dataStartPosition; + if (!isSeekable() || positionOffset <= xingFrameSize) { + return 0L; + } + long[] tableOfContents = Assertions.checkNotNull(this.tableOfContents); + double scaledPosition = (positionOffset * 256d) / dataSize; + int prevTableIndex = Util.binarySearchFloor(tableOfContents, (long) scaledPosition, true, true); + long prevTimeUs = getTimeUsForTableIndex(prevTableIndex); + long prevScaledPosition = tableOfContents[prevTableIndex]; + long nextTimeUs = getTimeUsForTableIndex(prevTableIndex + 1); + long nextScaledPosition = prevTableIndex == 99 ? 256 : tableOfContents[prevTableIndex + 1]; + // Linearly interpolate between the two table entries. + double interpolateFraction = prevScaledPosition == nextScaledPosition ? 0 + : ((scaledPosition - prevScaledPosition) / (nextScaledPosition - prevScaledPosition)); + return prevTimeUs + Math.round(interpolateFraction * (nextTimeUs - prevTimeUs)); + } + + @Override + public long getDurationUs() { + return durationUs; + } + + @Override + public long getDataEndPosition() { + return dataEndPosition; + } + + /** + * Returns the time in microseconds for a given table index. + * + * @param tableIndex A table index in the range [0, 100]. + * @return The corresponding time in microseconds. + */ + private long getTimeUsForTableIndex(int tableIndex) { + return (durationUs * tableIndex) / 100; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Atom.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Atom.java new file mode 100644 index 0000000000..56f0eab1cd --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Atom.java @@ -0,0 +1,558 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; + +@SuppressWarnings("ConstantField") +/* package */ abstract class Atom { + + /** + * Size of an atom header, in bytes. + */ + public static final int HEADER_SIZE = 8; + + /** + * Size of a full atom header, in bytes. + */ + public static final int FULL_HEADER_SIZE = 12; + + /** + * Size of a long atom header, in bytes. + */ + public static final int LONG_HEADER_SIZE = 16; + + /** + * Value for the size field in an atom that defines its size in the largesize field. + */ + public static final int DEFINES_LARGE_SIZE = 1; + + /** + * Value for the size field in an atom that extends to the end of the file. + */ + public static final int EXTENDS_TO_END_SIZE = 0; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_ftyp = 0x66747970; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_avc1 = 0x61766331; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_avc3 = 0x61766333; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_avcC = 0x61766343; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_hvc1 = 0x68766331; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_hev1 = 0x68657631; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_hvcC = 0x68766343; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_vp08 = 0x76703038; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_vp09 = 0x76703039; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_vpcC = 0x76706343; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_av01 = 0x61763031; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_av1C = 0x61763143; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dvav = 0x64766176; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dva1 = 0x64766131; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dvhe = 0x64766865; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dvh1 = 0x64766831; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dvcC = 0x64766343; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dvvC = 0x64767643; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_s263 = 0x73323633; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_d263 = 0x64323633; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_mdat = 0x6d646174; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_mp4a = 0x6d703461; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE__mp3 = 0x2e6d7033; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_wave = 0x77617665; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_lpcm = 0x6c70636d; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_sowt = 0x736f7774; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_ac_3 = 0x61632d33; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dac3 = 0x64616333; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_ec_3 = 0x65632d33; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dec3 = 0x64656333; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_ac_4 = 0x61632d34; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dac4 = 0x64616334; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dtsc = 0x64747363; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dtsh = 0x64747368; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dtsl = 0x6474736c; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dtse = 0x64747365; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_ddts = 0x64647473; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_tfdt = 0x74666474; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_tfhd = 0x74666864; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_trex = 0x74726578; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_trun = 0x7472756e; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_sidx = 0x73696478; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_moov = 0x6d6f6f76; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_mvhd = 0x6d766864; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_trak = 0x7472616b; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_mdia = 0x6d646961; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_minf = 0x6d696e66; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_stbl = 0x7374626c; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_esds = 0x65736473; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_moof = 0x6d6f6f66; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_traf = 0x74726166; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_mvex = 0x6d766578; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_mehd = 0x6d656864; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_tkhd = 0x746b6864; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_edts = 0x65647473; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_elst = 0x656c7374; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_mdhd = 0x6d646864; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_hdlr = 0x68646c72; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_stsd = 0x73747364; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_pssh = 0x70737368; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_sinf = 0x73696e66; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_schm = 0x7363686d; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_schi = 0x73636869; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_tenc = 0x74656e63; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_encv = 0x656e6376; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_enca = 0x656e6361; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_frma = 0x66726d61; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_saiz = 0x7361697a; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_saio = 0x7361696f; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_sbgp = 0x73626770; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_sgpd = 0x73677064; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_uuid = 0x75756964; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_senc = 0x73656e63; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_pasp = 0x70617370; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_TTML = 0x54544d4c; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_vmhd = 0x766d6864; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_mp4v = 0x6d703476; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_stts = 0x73747473; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_stss = 0x73747373; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_ctts = 0x63747473; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_stsc = 0x73747363; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_stsz = 0x7374737a; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_stz2 = 0x73747a32; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_stco = 0x7374636f; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_co64 = 0x636f3634; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_tx3g = 0x74783367; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_wvtt = 0x77767474; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_stpp = 0x73747070; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_c608 = 0x63363038; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_samr = 0x73616d72; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_sawb = 0x73617762; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_udta = 0x75647461; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_meta = 0x6d657461; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_keys = 0x6b657973; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_ilst = 0x696c7374; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_mean = 0x6d65616e; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_name = 0x6e616d65; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_data = 0x64617461; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_emsg = 0x656d7367; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_st3d = 0x73743364; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_sv3d = 0x73763364; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_proj = 0x70726f6a; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_camm = 0x63616d6d; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_alac = 0x616c6163; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_alaw = 0x616c6177; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_ulaw = 0x756c6177; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_Opus = 0x4f707573; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dOps = 0x644f7073; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_fLaC = 0x664c6143; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_dfLa = 0x64664c61; + + @SuppressWarnings("ConstantCaseForConstants") + public static final int TYPE_twos = 0x74776f73; + + public final int type; + + public Atom(int type) { + this.type = type; + } + + @Override + public String toString() { + return getAtomTypeString(type); + } + + /** + * An MP4 atom that is a leaf. + */ + /* package */ static final class LeafAtom extends Atom { + + /** + * The atom data. + */ + public final ParsableByteArray data; + + /** + * @param type The type of the atom. + * @param data The atom data. + */ + public LeafAtom(int type, ParsableByteArray data) { + super(type); + this.data = data; + } + + } + + /** + * An MP4 atom that has child atoms. + */ + /* package */ static final class ContainerAtom extends Atom { + + public final long endPosition; + public final List leafChildren; + public final List containerChildren; + + /** + * @param type The type of the atom. + * @param endPosition The position of the first byte after the end of the atom. + */ + public ContainerAtom(int type, long endPosition) { + super(type); + this.endPosition = endPosition; + leafChildren = new ArrayList<>(); + containerChildren = new ArrayList<>(); + } + + /** + * Adds a child leaf to this container. + * + * @param atom The child to add. + */ + public void add(LeafAtom atom) { + leafChildren.add(atom); + } + + /** + * Adds a child container to this container. + * + * @param atom The child to add. + */ + public void add(ContainerAtom atom) { + containerChildren.add(atom); + } + + /** + * Returns the child leaf of the given type. + * + *

If no child exists with the given type then null is returned. If multiple children exist + * with the given type then the first one to have been added is returned. + * + * @param type The leaf type. + * @return The child leaf of the given type, or null if no such child exists. + */ + @Nullable + public LeafAtom getLeafAtomOfType(int type) { + int childrenSize = leafChildren.size(); + for (int i = 0; i < childrenSize; i++) { + LeafAtom atom = leafChildren.get(i); + if (atom.type == type) { + return atom; + } + } + return null; + } + + /** + * Returns the child container of the given type. + * + *

If no child exists with the given type then null is returned. If multiple children exist + * with the given type then the first one to have been added is returned. + * + * @param type The container type. + * @return The child container of the given type, or null if no such child exists. + */ + @Nullable + public ContainerAtom getContainerAtomOfType(int type) { + int childrenSize = containerChildren.size(); + for (int i = 0; i < childrenSize; i++) { + ContainerAtom atom = containerChildren.get(i); + if (atom.type == type) { + return atom; + } + } + return null; + } + + /** + * Returns the total number of leaf/container children of this atom with the given type. + * + * @param type The type of child atoms to count. + * @return The total number of leaf/container children of this atom with the given type. + */ + public int getChildAtomOfTypeCount(int type) { + int count = 0; + int size = leafChildren.size(); + for (int i = 0; i < size; i++) { + LeafAtom atom = leafChildren.get(i); + if (atom.type == type) { + count++; + } + } + size = containerChildren.size(); + for (int i = 0; i < size; i++) { + ContainerAtom atom = containerChildren.get(i); + if (atom.type == type) { + count++; + } + } + return count; + } + + @Override + public String toString() { + return getAtomTypeString(type) + + " leaves: " + Arrays.toString(leafChildren.toArray()) + + " containers: " + Arrays.toString(containerChildren.toArray()); + } + + } + + /** + * Parses the version number out of the additional integer component of a full atom. + */ + public static int parseFullAtomVersion(int fullAtomInt) { + return 0x000000FF & (fullAtomInt >> 24); + } + + /** + * Parses the atom flags out of the additional integer component of a full atom. + */ + public static int parseFullAtomFlags(int fullAtomInt) { + return 0x00FFFFFF & fullAtomInt; + } + + /** + * Converts a numeric atom type to the corresponding four character string. + * + * @param type The numeric atom type. + * @return The corresponding four character string. + */ + public static String getAtomTypeString(int type) { + return "" + (char) ((type >> 24) & 0xFF) + + (char) ((type >> 16) & 0xFF) + + (char) ((type >> 8) & 0xFF) + + (char) (type & 0xFF); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/AtomParsers.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/AtomParsers.java new file mode 100644 index 0000000000..93ee2d6810 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/AtomParsers.java @@ -0,0 +1,1607 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes.getMimeTypeFromMp4ObjectType; + +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac3Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac4Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.GaplessInfoHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.CodecSpecificDataUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.AvcConfig; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.DolbyVisionConfig; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.HevcConfig; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; + +/** Utility methods for parsing MP4 format atom payloads according to ISO 14496-12. */ +@SuppressWarnings({"ConstantField"}) +/* package */ final class AtomParsers { + + private static final String TAG = "AtomParsers"; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_vide = 0x76696465; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_soun = 0x736f756e; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_text = 0x74657874; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_sbtl = 0x7362746c; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_subt = 0x73756274; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_clcp = 0x636c6370; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_meta = 0x6d657461; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_mdta = 0x6d647461; + + /** + * The threshold number of samples to trim from the start/end of an audio track when applying an + * edit below which gapless info can be used (rather than removing samples from the sample table). + */ + private static final int MAX_GAPLESS_TRIM_SIZE_SAMPLES = 4; + + /** The magic signature for an Opus Identification header, as defined in RFC-7845. */ + private static final byte[] opusMagic = Util.getUtf8Bytes("OpusHead"); + + /** + * Parses a trak atom (defined in 14496-12). + * + * @param trak Atom to decode. + * @param mvhd Movie header atom, used to get the timescale. + * @param duration The duration in units of the timescale declared in the mvhd atom, or + * {@link C#TIME_UNSET} if the duration should be parsed from the tkhd atom. + * @param drmInitData {@link DrmInitData} to be included in the format. + * @param ignoreEditLists Whether to ignore any edit lists in the trak box. + * @param isQuickTime True for QuickTime media. False otherwise. + * @return A {@link Track} instance, or {@code null} if the track's type isn't supported. + */ + public static Track parseTrak(Atom.ContainerAtom trak, Atom.LeafAtom mvhd, long duration, + DrmInitData drmInitData, boolean ignoreEditLists, boolean isQuickTime) + throws ParserException { + Atom.ContainerAtom mdia = trak.getContainerAtomOfType(Atom.TYPE_mdia); + int trackType = getTrackTypeForHdlr(parseHdlr(mdia.getLeafAtomOfType(Atom.TYPE_hdlr).data)); + if (trackType == C.TRACK_TYPE_UNKNOWN) { + return null; + } + + TkhdData tkhdData = parseTkhd(trak.getLeafAtomOfType(Atom.TYPE_tkhd).data); + if (duration == C.TIME_UNSET) { + duration = tkhdData.duration; + } + long movieTimescale = parseMvhd(mvhd.data); + long durationUs; + if (duration == C.TIME_UNSET) { + durationUs = C.TIME_UNSET; + } else { + durationUs = Util.scaleLargeTimestamp(duration, C.MICROS_PER_SECOND, movieTimescale); + } + Atom.ContainerAtom stbl = mdia.getContainerAtomOfType(Atom.TYPE_minf) + .getContainerAtomOfType(Atom.TYPE_stbl); + + Pair mdhdData = parseMdhd(mdia.getLeafAtomOfType(Atom.TYPE_mdhd).data); + StsdData stsdData = parseStsd(stbl.getLeafAtomOfType(Atom.TYPE_stsd).data, tkhdData.id, + tkhdData.rotationDegrees, mdhdData.second, drmInitData, isQuickTime); + long[] editListDurations = null; + long[] editListMediaTimes = null; + if (!ignoreEditLists) { + Pair edtsData = parseEdts(trak.getContainerAtomOfType(Atom.TYPE_edts)); + editListDurations = edtsData.first; + editListMediaTimes = edtsData.second; + } + return stsdData.format == null ? null + : new Track(tkhdData.id, trackType, mdhdData.first, movieTimescale, durationUs, + stsdData.format, stsdData.requiredSampleTransformation, stsdData.trackEncryptionBoxes, + stsdData.nalUnitLengthFieldLength, editListDurations, editListMediaTimes); + } + + /** + * Parses an stbl atom (defined in 14496-12). + * + * @param track Track to which this sample table corresponds. + * @param stblAtom stbl (sample table) atom to decode. + * @param gaplessInfoHolder Holder to populate with gapless playback information. + * @return Sample table described by the stbl atom. + * @throws ParserException Thrown if the stbl atom can't be parsed. + */ + public static TrackSampleTable parseStbl( + Track track, Atom.ContainerAtom stblAtom, GaplessInfoHolder gaplessInfoHolder) + throws ParserException { + SampleSizeBox sampleSizeBox; + Atom.LeafAtom stszAtom = stblAtom.getLeafAtomOfType(Atom.TYPE_stsz); + if (stszAtom != null) { + sampleSizeBox = new StszSampleSizeBox(stszAtom); + } else { + Atom.LeafAtom stz2Atom = stblAtom.getLeafAtomOfType(Atom.TYPE_stz2); + if (stz2Atom == null) { + throw new ParserException("Track has no sample table size information"); + } + sampleSizeBox = new Stz2SampleSizeBox(stz2Atom); + } + + int sampleCount = sampleSizeBox.getSampleCount(); + if (sampleCount == 0) { + return new TrackSampleTable( + track, + /* offsets= */ new long[0], + /* sizes= */ new int[0], + /* maximumSize= */ 0, + /* timestampsUs= */ new long[0], + /* flags= */ new int[0], + /* durationUs= */ C.TIME_UNSET); + } + + // Entries are byte offsets of chunks. + boolean chunkOffsetsAreLongs = false; + Atom.LeafAtom chunkOffsetsAtom = stblAtom.getLeafAtomOfType(Atom.TYPE_stco); + if (chunkOffsetsAtom == null) { + chunkOffsetsAreLongs = true; + chunkOffsetsAtom = stblAtom.getLeafAtomOfType(Atom.TYPE_co64); + } + ParsableByteArray chunkOffsets = chunkOffsetsAtom.data; + // Entries are (chunk number, number of samples per chunk, sample description index). + ParsableByteArray stsc = stblAtom.getLeafAtomOfType(Atom.TYPE_stsc).data; + // Entries are (number of samples, timestamp delta between those samples). + ParsableByteArray stts = stblAtom.getLeafAtomOfType(Atom.TYPE_stts).data; + // Entries are the indices of samples that are synchronization samples. + Atom.LeafAtom stssAtom = stblAtom.getLeafAtomOfType(Atom.TYPE_stss); + ParsableByteArray stss = stssAtom != null ? stssAtom.data : null; + // Entries are (number of samples, timestamp offset). + Atom.LeafAtom cttsAtom = stblAtom.getLeafAtomOfType(Atom.TYPE_ctts); + ParsableByteArray ctts = cttsAtom != null ? cttsAtom.data : null; + + // Prepare to read chunk information. + ChunkIterator chunkIterator = new ChunkIterator(stsc, chunkOffsets, chunkOffsetsAreLongs); + + // Prepare to read sample timestamps. + stts.setPosition(Atom.FULL_HEADER_SIZE); + int remainingTimestampDeltaChanges = stts.readUnsignedIntToInt() - 1; + int remainingSamplesAtTimestampDelta = stts.readUnsignedIntToInt(); + int timestampDeltaInTimeUnits = stts.readUnsignedIntToInt(); + + // Prepare to read sample timestamp offsets, if ctts is present. + int remainingSamplesAtTimestampOffset = 0; + int remainingTimestampOffsetChanges = 0; + int timestampOffset = 0; + if (ctts != null) { + ctts.setPosition(Atom.FULL_HEADER_SIZE); + remainingTimestampOffsetChanges = ctts.readUnsignedIntToInt(); + } + + int nextSynchronizationSampleIndex = C.INDEX_UNSET; + int remainingSynchronizationSamples = 0; + if (stss != null) { + stss.setPosition(Atom.FULL_HEADER_SIZE); + remainingSynchronizationSamples = stss.readUnsignedIntToInt(); + if (remainingSynchronizationSamples > 0) { + nextSynchronizationSampleIndex = stss.readUnsignedIntToInt() - 1; + } else { + // Ignore empty stss boxes, which causes all samples to be treated as sync samples. + stss = null; + } + } + + // Fixed sample size raw audio may need to be rechunked. + boolean isFixedSampleSizeRawAudio = + sampleSizeBox.isFixedSampleSize() + && MimeTypes.AUDIO_RAW.equals(track.format.sampleMimeType) + && remainingTimestampDeltaChanges == 0 + && remainingTimestampOffsetChanges == 0 + && remainingSynchronizationSamples == 0; + + long[] offsets; + int[] sizes; + int maximumSize = 0; + long[] timestamps; + int[] flags; + long timestampTimeUnits = 0; + long duration; + + if (!isFixedSampleSizeRawAudio) { + offsets = new long[sampleCount]; + sizes = new int[sampleCount]; + timestamps = new long[sampleCount]; + flags = new int[sampleCount]; + long offset = 0; + int remainingSamplesInChunk = 0; + + for (int i = 0; i < sampleCount; i++) { + // Advance to the next chunk if necessary. + boolean chunkDataComplete = true; + while (remainingSamplesInChunk == 0 && (chunkDataComplete = chunkIterator.moveNext())) { + offset = chunkIterator.offset; + remainingSamplesInChunk = chunkIterator.numSamples; + } + if (!chunkDataComplete) { + Log.w(TAG, "Unexpected end of chunk data"); + sampleCount = i; + offsets = Arrays.copyOf(offsets, sampleCount); + sizes = Arrays.copyOf(sizes, sampleCount); + timestamps = Arrays.copyOf(timestamps, sampleCount); + flags = Arrays.copyOf(flags, sampleCount); + break; + } + + // Add on the timestamp offset if ctts is present. + if (ctts != null) { + while (remainingSamplesAtTimestampOffset == 0 && remainingTimestampOffsetChanges > 0) { + remainingSamplesAtTimestampOffset = ctts.readUnsignedIntToInt(); + // The BMFF spec (ISO 14496-12) states that sample offsets should be unsigned integers + // in version 0 ctts boxes, however some streams violate the spec and use signed + // integers instead. It's safe to always decode sample offsets as signed integers here, + // because unsigned integers will still be parsed correctly (unless their top bit is + // set, which is never true in practice because sample offsets are always small). + timestampOffset = ctts.readInt(); + remainingTimestampOffsetChanges--; + } + remainingSamplesAtTimestampOffset--; + } + + offsets[i] = offset; + sizes[i] = sampleSizeBox.readNextSampleSize(); + if (sizes[i] > maximumSize) { + maximumSize = sizes[i]; + } + timestamps[i] = timestampTimeUnits + timestampOffset; + + // All samples are synchronization samples if the stss is not present. + flags[i] = stss == null ? C.BUFFER_FLAG_KEY_FRAME : 0; + if (i == nextSynchronizationSampleIndex) { + flags[i] = C.BUFFER_FLAG_KEY_FRAME; + remainingSynchronizationSamples--; + if (remainingSynchronizationSamples > 0) { + nextSynchronizationSampleIndex = stss.readUnsignedIntToInt() - 1; + } + } + + // Add on the duration of this sample. + timestampTimeUnits += timestampDeltaInTimeUnits; + remainingSamplesAtTimestampDelta--; + if (remainingSamplesAtTimestampDelta == 0 && remainingTimestampDeltaChanges > 0) { + remainingSamplesAtTimestampDelta = stts.readUnsignedIntToInt(); + // The BMFF spec (ISO 14496-12) states that sample deltas should be unsigned integers + // in stts boxes, however some streams violate the spec and use signed integers instead. + // See https://github.com/google/ExoPlayer/issues/3384. It's safe to always decode sample + // deltas as signed integers here, because unsigned integers will still be parsed + // correctly (unless their top bit is set, which is never true in practice because sample + // deltas are always small). + timestampDeltaInTimeUnits = stts.readInt(); + remainingTimestampDeltaChanges--; + } + + offset += sizes[i]; + remainingSamplesInChunk--; + } + duration = timestampTimeUnits + timestampOffset; + + // If the stbl's child boxes are not consistent the container is malformed, but the stream may + // still be playable. + boolean isCttsValid = true; + while (remainingTimestampOffsetChanges > 0) { + if (ctts.readUnsignedIntToInt() != 0) { + isCttsValid = false; + break; + } + ctts.readInt(); // Ignore offset. + remainingTimestampOffsetChanges--; + } + if (remainingSynchronizationSamples != 0 + || remainingSamplesAtTimestampDelta != 0 + || remainingSamplesInChunk != 0 + || remainingTimestampDeltaChanges != 0 + || remainingSamplesAtTimestampOffset != 0 + || !isCttsValid) { + Log.w( + TAG, + "Inconsistent stbl box for track " + + track.id + + ": remainingSynchronizationSamples " + + remainingSynchronizationSamples + + ", remainingSamplesAtTimestampDelta " + + remainingSamplesAtTimestampDelta + + ", remainingSamplesInChunk " + + remainingSamplesInChunk + + ", remainingTimestampDeltaChanges " + + remainingTimestampDeltaChanges + + ", remainingSamplesAtTimestampOffset " + + remainingSamplesAtTimestampOffset + + (!isCttsValid ? ", ctts invalid" : "")); + } + } else { + long[] chunkOffsetsBytes = new long[chunkIterator.length]; + int[] chunkSampleCounts = new int[chunkIterator.length]; + while (chunkIterator.moveNext()) { + chunkOffsetsBytes[chunkIterator.index] = chunkIterator.offset; + chunkSampleCounts[chunkIterator.index] = chunkIterator.numSamples; + } + int fixedSampleSize = + Util.getPcmFrameSize(track.format.pcmEncoding, track.format.channelCount); + FixedSampleSizeRechunker.Results rechunkedResults = FixedSampleSizeRechunker.rechunk( + fixedSampleSize, chunkOffsetsBytes, chunkSampleCounts, timestampDeltaInTimeUnits); + offsets = rechunkedResults.offsets; + sizes = rechunkedResults.sizes; + maximumSize = rechunkedResults.maximumSize; + timestamps = rechunkedResults.timestamps; + flags = rechunkedResults.flags; + duration = rechunkedResults.duration; + } + long durationUs = Util.scaleLargeTimestamp(duration, C.MICROS_PER_SECOND, track.timescale); + + if (track.editListDurations == null) { + Util.scaleLargeTimestampsInPlace(timestamps, C.MICROS_PER_SECOND, track.timescale); + return new TrackSampleTable( + track, offsets, sizes, maximumSize, timestamps, flags, durationUs); + } + + // See the BMFF spec (ISO 14496-12) subsection 8.6.6. Edit lists that require prerolling from a + // sync sample after reordering are not supported. Partial audio sample truncation is only + // supported in edit lists with one edit that removes less than MAX_GAPLESS_TRIM_SIZE_SAMPLES + // samples from the start/end of the track. This implementation handles simple + // discarding/delaying of samples. The extractor may place further restrictions on what edited + // streams are playable. + + if (track.editListDurations.length == 1 + && track.type == C.TRACK_TYPE_AUDIO + && timestamps.length >= 2) { + long editStartTime = track.editListMediaTimes[0]; + long editEndTime = editStartTime + Util.scaleLargeTimestamp(track.editListDurations[0], + track.timescale, track.movieTimescale); + if (canApplyEditWithGaplessInfo(timestamps, duration, editStartTime, editEndTime)) { + long paddingTimeUnits = duration - editEndTime; + long encoderDelay = Util.scaleLargeTimestamp(editStartTime - timestamps[0], + track.format.sampleRate, track.timescale); + long encoderPadding = Util.scaleLargeTimestamp(paddingTimeUnits, + track.format.sampleRate, track.timescale); + if ((encoderDelay != 0 || encoderPadding != 0) && encoderDelay <= Integer.MAX_VALUE + && encoderPadding <= Integer.MAX_VALUE) { + gaplessInfoHolder.encoderDelay = (int) encoderDelay; + gaplessInfoHolder.encoderPadding = (int) encoderPadding; + Util.scaleLargeTimestampsInPlace(timestamps, C.MICROS_PER_SECOND, track.timescale); + long editedDurationUs = + Util.scaleLargeTimestamp( + track.editListDurations[0], C.MICROS_PER_SECOND, track.movieTimescale); + return new TrackSampleTable( + track, offsets, sizes, maximumSize, timestamps, flags, editedDurationUs); + } + } + } + + if (track.editListDurations.length == 1 && track.editListDurations[0] == 0) { + // The current version of the spec leaves handling of an edit with zero segment_duration in + // unfragmented files open to interpretation. We handle this as a special case and include all + // samples in the edit. + long editStartTime = track.editListMediaTimes[0]; + for (int i = 0; i < timestamps.length; i++) { + timestamps[i] = + Util.scaleLargeTimestamp( + timestamps[i] - editStartTime, C.MICROS_PER_SECOND, track.timescale); + } + durationUs = + Util.scaleLargeTimestamp(duration - editStartTime, C.MICROS_PER_SECOND, track.timescale); + return new TrackSampleTable( + track, offsets, sizes, maximumSize, timestamps, flags, durationUs); + } + + // Omit any sample at the end point of an edit for audio tracks. + boolean omitClippedSample = track.type == C.TRACK_TYPE_AUDIO; + + // Count the number of samples after applying edits. + int editedSampleCount = 0; + int nextSampleIndex = 0; + boolean copyMetadata = false; + int[] startIndices = new int[track.editListDurations.length]; + int[] endIndices = new int[track.editListDurations.length]; + for (int i = 0; i < track.editListDurations.length; i++) { + long editMediaTime = track.editListMediaTimes[i]; + if (editMediaTime != -1) { + long editDuration = + Util.scaleLargeTimestamp( + track.editListDurations[i], track.timescale, track.movieTimescale); + startIndices[i] = + Util.binarySearchFloor( + timestamps, editMediaTime, /* inclusive= */ true, /* stayInBounds= */ true); + endIndices[i] = + Util.binarySearchCeil( + timestamps, + editMediaTime + editDuration, + /* inclusive= */ omitClippedSample, + /* stayInBounds= */ false); + while (startIndices[i] < endIndices[i] + && (flags[startIndices[i]] & C.BUFFER_FLAG_KEY_FRAME) == 0) { + // Applying the edit correctly would require prerolling from the previous sync sample. In + // the current implementation we advance to the next sync sample instead. Only other + // tracks (i.e. audio) will be rendered until the time of the first sync sample. + // See https://github.com/google/ExoPlayer/issues/1659. + startIndices[i]++; + } + editedSampleCount += endIndices[i] - startIndices[i]; + copyMetadata |= nextSampleIndex != startIndices[i]; + nextSampleIndex = endIndices[i]; + } + } + copyMetadata |= editedSampleCount != sampleCount; + + // Calculate edited sample timestamps and update the corresponding metadata arrays. + long[] editedOffsets = copyMetadata ? new long[editedSampleCount] : offsets; + int[] editedSizes = copyMetadata ? new int[editedSampleCount] : sizes; + int editedMaximumSize = copyMetadata ? 0 : maximumSize; + int[] editedFlags = copyMetadata ? new int[editedSampleCount] : flags; + long[] editedTimestamps = new long[editedSampleCount]; + long pts = 0; + int sampleIndex = 0; + for (int i = 0; i < track.editListDurations.length; i++) { + long editMediaTime = track.editListMediaTimes[i]; + int startIndex = startIndices[i]; + int endIndex = endIndices[i]; + if (copyMetadata) { + int count = endIndex - startIndex; + System.arraycopy(offsets, startIndex, editedOffsets, sampleIndex, count); + System.arraycopy(sizes, startIndex, editedSizes, sampleIndex, count); + System.arraycopy(flags, startIndex, editedFlags, sampleIndex, count); + } + for (int j = startIndex; j < endIndex; j++) { + long ptsUs = Util.scaleLargeTimestamp(pts, C.MICROS_PER_SECOND, track.movieTimescale); + long timeInSegmentUs = + Util.scaleLargeTimestamp( + Math.max(0, timestamps[j] - editMediaTime), C.MICROS_PER_SECOND, track.timescale); + editedTimestamps[sampleIndex] = ptsUs + timeInSegmentUs; + if (copyMetadata && editedSizes[sampleIndex] > editedMaximumSize) { + editedMaximumSize = sizes[j]; + } + sampleIndex++; + } + pts += track.editListDurations[i]; + } + long editedDurationUs = + Util.scaleLargeTimestamp(pts, C.MICROS_PER_SECOND, track.movieTimescale); + return new TrackSampleTable( + track, + editedOffsets, + editedSizes, + editedMaximumSize, + editedTimestamps, + editedFlags, + editedDurationUs); + } + + /** + * Parses a udta atom. + * + * @param udtaAtom The udta (user data) atom to decode. + * @param isQuickTime True for QuickTime media. False otherwise. + * @return Parsed metadata, or null. + */ + @Nullable + public static Metadata parseUdta(Atom.LeafAtom udtaAtom, boolean isQuickTime) { + if (isQuickTime) { + // Meta boxes are regular boxes rather than full boxes in QuickTime. For now, don't try and + // decode one. + return null; + } + ParsableByteArray udtaData = udtaAtom.data; + udtaData.setPosition(Atom.HEADER_SIZE); + while (udtaData.bytesLeft() >= Atom.HEADER_SIZE) { + int atomPosition = udtaData.getPosition(); + int atomSize = udtaData.readInt(); + int atomType = udtaData.readInt(); + if (atomType == Atom.TYPE_meta) { + udtaData.setPosition(atomPosition); + return parseUdtaMeta(udtaData, atomPosition + atomSize); + } + udtaData.setPosition(atomPosition + atomSize); + } + return null; + } + + /** + * Parses a metadata meta atom if it contains metadata with handler 'mdta'. + * + * @param meta The metadata atom to decode. + * @return Parsed metadata, or null. + */ + @Nullable + public static Metadata parseMdtaFromMeta(Atom.ContainerAtom meta) { + Atom.LeafAtom hdlrAtom = meta.getLeafAtomOfType(Atom.TYPE_hdlr); + Atom.LeafAtom keysAtom = meta.getLeafAtomOfType(Atom.TYPE_keys); + Atom.LeafAtom ilstAtom = meta.getLeafAtomOfType(Atom.TYPE_ilst); + if (hdlrAtom == null + || keysAtom == null + || ilstAtom == null + || AtomParsers.parseHdlr(hdlrAtom.data) != TYPE_mdta) { + // There isn't enough information to parse the metadata, or the handler type is unexpected. + return null; + } + + // Parse metadata keys. + ParsableByteArray keys = keysAtom.data; + keys.setPosition(Atom.FULL_HEADER_SIZE); + int entryCount = keys.readInt(); + String[] keyNames = new String[entryCount]; + for (int i = 0; i < entryCount; i++) { + int entrySize = keys.readInt(); + keys.skipBytes(4); // keyNamespace + int keySize = entrySize - 8; + keyNames[i] = keys.readString(keySize); + } + + // Parse metadata items. + ParsableByteArray ilst = ilstAtom.data; + ilst.setPosition(Atom.HEADER_SIZE); + ArrayList entries = new ArrayList<>(); + while (ilst.bytesLeft() > Atom.HEADER_SIZE) { + int atomPosition = ilst.getPosition(); + int atomSize = ilst.readInt(); + int keyIndex = ilst.readInt() - 1; + if (keyIndex >= 0 && keyIndex < keyNames.length) { + String key = keyNames[keyIndex]; + Metadata.Entry entry = + MetadataUtil.parseMdtaMetadataEntryFromIlst(ilst, atomPosition + atomSize, key); + if (entry != null) { + entries.add(entry); + } + } else { + Log.w(TAG, "Skipped metadata with unknown key index: " + keyIndex); + } + ilst.setPosition(atomPosition + atomSize); + } + return entries.isEmpty() ? null : new Metadata(entries); + } + + @Nullable + private static Metadata parseUdtaMeta(ParsableByteArray meta, int limit) { + meta.skipBytes(Atom.FULL_HEADER_SIZE); + while (meta.getPosition() < limit) { + int atomPosition = meta.getPosition(); + int atomSize = meta.readInt(); + int atomType = meta.readInt(); + if (atomType == Atom.TYPE_ilst) { + meta.setPosition(atomPosition); + return parseIlst(meta, atomPosition + atomSize); + } + meta.setPosition(atomPosition + atomSize); + } + return null; + } + + @Nullable + private static Metadata parseIlst(ParsableByteArray ilst, int limit) { + ilst.skipBytes(Atom.HEADER_SIZE); + ArrayList entries = new ArrayList<>(); + while (ilst.getPosition() < limit) { + Metadata.Entry entry = MetadataUtil.parseIlstElement(ilst); + if (entry != null) { + entries.add(entry); + } + } + return entries.isEmpty() ? null : new Metadata(entries); + } + + /** + * Parses a mvhd atom (defined in 14496-12), returning the timescale for the movie. + * + * @param mvhd Contents of the mvhd atom to be parsed. + * @return Timescale for the movie. + */ + private static long parseMvhd(ParsableByteArray mvhd) { + mvhd.setPosition(Atom.HEADER_SIZE); + int fullAtom = mvhd.readInt(); + int version = Atom.parseFullAtomVersion(fullAtom); + mvhd.skipBytes(version == 0 ? 8 : 16); + return mvhd.readUnsignedInt(); + } + + /** + * Parses a tkhd atom (defined in 14496-12). + * + * @return An object containing the parsed data. + */ + private static TkhdData parseTkhd(ParsableByteArray tkhd) { + tkhd.setPosition(Atom.HEADER_SIZE); + int fullAtom = tkhd.readInt(); + int version = Atom.parseFullAtomVersion(fullAtom); + + tkhd.skipBytes(version == 0 ? 8 : 16); + int trackId = tkhd.readInt(); + + tkhd.skipBytes(4); + boolean durationUnknown = true; + int durationPosition = tkhd.getPosition(); + int durationByteCount = version == 0 ? 4 : 8; + for (int i = 0; i < durationByteCount; i++) { + if (tkhd.data[durationPosition + i] != -1) { + durationUnknown = false; + break; + } + } + long duration; + if (durationUnknown) { + tkhd.skipBytes(durationByteCount); + duration = C.TIME_UNSET; + } else { + duration = version == 0 ? tkhd.readUnsignedInt() : tkhd.readUnsignedLongToLong(); + if (duration == 0) { + // 0 duration normally indicates that the file is fully fragmented (i.e. all of the media + // samples are in fragments). Treat as unknown. + duration = C.TIME_UNSET; + } + } + + tkhd.skipBytes(16); + int a00 = tkhd.readInt(); + int a01 = tkhd.readInt(); + tkhd.skipBytes(4); + int a10 = tkhd.readInt(); + int a11 = tkhd.readInt(); + + int rotationDegrees; + int fixedOne = 65536; + if (a00 == 0 && a01 == fixedOne && a10 == -fixedOne && a11 == 0) { + rotationDegrees = 90; + } else if (a00 == 0 && a01 == -fixedOne && a10 == fixedOne && a11 == 0) { + rotationDegrees = 270; + } else if (a00 == -fixedOne && a01 == 0 && a10 == 0 && a11 == -fixedOne) { + rotationDegrees = 180; + } else { + // Only 0, 90, 180 and 270 are supported. Treat anything else as 0. + rotationDegrees = 0; + } + + return new TkhdData(trackId, duration, rotationDegrees); + } + + /** + * Parses an hdlr atom. + * + * @param hdlr The hdlr atom to decode. + * @return The handler value. + */ + private static int parseHdlr(ParsableByteArray hdlr) { + hdlr.setPosition(Atom.FULL_HEADER_SIZE + 4); + return hdlr.readInt(); + } + + /** Returns the track type for a given handler value. */ + private static int getTrackTypeForHdlr(int hdlr) { + if (hdlr == TYPE_soun) { + return C.TRACK_TYPE_AUDIO; + } else if (hdlr == TYPE_vide) { + return C.TRACK_TYPE_VIDEO; + } else if (hdlr == TYPE_text || hdlr == TYPE_sbtl || hdlr == TYPE_subt || hdlr == TYPE_clcp) { + return C.TRACK_TYPE_TEXT; + } else if (hdlr == TYPE_meta) { + return C.TRACK_TYPE_METADATA; + } else { + return C.TRACK_TYPE_UNKNOWN; + } + } + + /** + * Parses an mdhd atom (defined in 14496-12). + * + * @param mdhd The mdhd atom to decode. + * @return A pair consisting of the media timescale defined as the number of time units that pass + * in one second, and the language code. + */ + private static Pair parseMdhd(ParsableByteArray mdhd) { + mdhd.setPosition(Atom.HEADER_SIZE); + int fullAtom = mdhd.readInt(); + int version = Atom.parseFullAtomVersion(fullAtom); + mdhd.skipBytes(version == 0 ? 8 : 16); + long timescale = mdhd.readUnsignedInt(); + mdhd.skipBytes(version == 0 ? 4 : 8); + int languageCode = mdhd.readUnsignedShort(); + String language = + "" + + (char) (((languageCode >> 10) & 0x1F) + 0x60) + + (char) (((languageCode >> 5) & 0x1F) + 0x60) + + (char) ((languageCode & 0x1F) + 0x60); + return Pair.create(timescale, language); + } + + /** + * Parses a stsd atom (defined in 14496-12). + * + * @param stsd The stsd atom to decode. + * @param trackId The track's identifier in its container. + * @param rotationDegrees The rotation of the track in degrees. + * @param language The language of the track. + * @param drmInitData {@link DrmInitData} to be included in the format. + * @param isQuickTime True for QuickTime media. False otherwise. + * @return An object containing the parsed data. + */ + private static StsdData parseStsd(ParsableByteArray stsd, int trackId, int rotationDegrees, + String language, DrmInitData drmInitData, boolean isQuickTime) throws ParserException { + stsd.setPosition(Atom.FULL_HEADER_SIZE); + int numberOfEntries = stsd.readInt(); + StsdData out = new StsdData(numberOfEntries); + for (int i = 0; i < numberOfEntries; i++) { + int childStartPosition = stsd.getPosition(); + int childAtomSize = stsd.readInt(); + Assertions.checkArgument(childAtomSize > 0, "childAtomSize should be positive"); + int childAtomType = stsd.readInt(); + if (childAtomType == Atom.TYPE_avc1 + || childAtomType == Atom.TYPE_avc3 + || childAtomType == Atom.TYPE_encv + || childAtomType == Atom.TYPE_mp4v + || childAtomType == Atom.TYPE_hvc1 + || childAtomType == Atom.TYPE_hev1 + || childAtomType == Atom.TYPE_s263 + || childAtomType == Atom.TYPE_vp08 + || childAtomType == Atom.TYPE_vp09 + || childAtomType == Atom.TYPE_av01 + || childAtomType == Atom.TYPE_dvav + || childAtomType == Atom.TYPE_dva1 + || childAtomType == Atom.TYPE_dvhe + || childAtomType == Atom.TYPE_dvh1) { + parseVideoSampleEntry(stsd, childAtomType, childStartPosition, childAtomSize, trackId, + rotationDegrees, drmInitData, out, i); + } else if (childAtomType == Atom.TYPE_mp4a + || childAtomType == Atom.TYPE_enca + || childAtomType == Atom.TYPE_ac_3 + || childAtomType == Atom.TYPE_ec_3 + || childAtomType == Atom.TYPE_ac_4 + || childAtomType == Atom.TYPE_dtsc + || childAtomType == Atom.TYPE_dtse + || childAtomType == Atom.TYPE_dtsh + || childAtomType == Atom.TYPE_dtsl + || childAtomType == Atom.TYPE_samr + || childAtomType == Atom.TYPE_sawb + || childAtomType == Atom.TYPE_lpcm + || childAtomType == Atom.TYPE_sowt + || childAtomType == Atom.TYPE_twos + || childAtomType == Atom.TYPE__mp3 + || childAtomType == Atom.TYPE_alac + || childAtomType == Atom.TYPE_alaw + || childAtomType == Atom.TYPE_ulaw + || childAtomType == Atom.TYPE_Opus + || childAtomType == Atom.TYPE_fLaC) { + parseAudioSampleEntry(stsd, childAtomType, childStartPosition, childAtomSize, trackId, + language, isQuickTime, drmInitData, out, i); + } else if (childAtomType == Atom.TYPE_TTML || childAtomType == Atom.TYPE_tx3g + || childAtomType == Atom.TYPE_wvtt || childAtomType == Atom.TYPE_stpp + || childAtomType == Atom.TYPE_c608) { + parseTextSampleEntry(stsd, childAtomType, childStartPosition, childAtomSize, trackId, + language, out); + } else if (childAtomType == Atom.TYPE_camm) { + out.format = Format.createSampleFormat(Integer.toString(trackId), + MimeTypes.APPLICATION_CAMERA_MOTION, null, Format.NO_VALUE, null); + } + stsd.setPosition(childStartPosition + childAtomSize); + } + return out; + } + + private static void parseTextSampleEntry(ParsableByteArray parent, int atomType, int position, + int atomSize, int trackId, String language, StsdData out) throws ParserException { + parent.setPosition(position + Atom.HEADER_SIZE + StsdData.STSD_HEADER_SIZE); + + // Default values. + List initializationData = null; + long subsampleOffsetUs = Format.OFFSET_SAMPLE_RELATIVE; + + String mimeType; + if (atomType == Atom.TYPE_TTML) { + mimeType = MimeTypes.APPLICATION_TTML; + } else if (atomType == Atom.TYPE_tx3g) { + mimeType = MimeTypes.APPLICATION_TX3G; + int sampleDescriptionLength = atomSize - Atom.HEADER_SIZE - 8; + byte[] sampleDescriptionData = new byte[sampleDescriptionLength]; + parent.readBytes(sampleDescriptionData, 0, sampleDescriptionLength); + initializationData = Collections.singletonList(sampleDescriptionData); + } else if (atomType == Atom.TYPE_wvtt) { + mimeType = MimeTypes.APPLICATION_MP4VTT; + } else if (atomType == Atom.TYPE_stpp) { + mimeType = MimeTypes.APPLICATION_TTML; + subsampleOffsetUs = 0; // Subsample timing is absolute. + } else if (atomType == Atom.TYPE_c608) { + // Defined by the QuickTime File Format specification. + mimeType = MimeTypes.APPLICATION_MP4CEA608; + out.requiredSampleTransformation = Track.TRANSFORMATION_CEA608_CDAT; + } else { + // Never happens. + throw new IllegalStateException(); + } + + out.format = + Format.createTextSampleFormat( + Integer.toString(trackId), + mimeType, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + /* selectionFlags= */ 0, + language, + /* accessibilityChannel= */ Format.NO_VALUE, + /* drmInitData= */ null, + subsampleOffsetUs, + initializationData); + } + + private static void parseVideoSampleEntry(ParsableByteArray parent, int atomType, int position, + int size, int trackId, int rotationDegrees, DrmInitData drmInitData, StsdData out, + int entryIndex) throws ParserException { + parent.setPosition(position + Atom.HEADER_SIZE + StsdData.STSD_HEADER_SIZE); + + parent.skipBytes(16); + int width = parent.readUnsignedShort(); + int height = parent.readUnsignedShort(); + boolean pixelWidthHeightRatioFromPasp = false; + float pixelWidthHeightRatio = 1; + parent.skipBytes(50); + + int childPosition = parent.getPosition(); + if (atomType == Atom.TYPE_encv) { + Pair sampleEntryEncryptionData = parseSampleEntryEncryptionData( + parent, position, size); + if (sampleEntryEncryptionData != null) { + atomType = sampleEntryEncryptionData.first; + drmInitData = drmInitData == null ? null + : drmInitData.copyWithSchemeType(sampleEntryEncryptionData.second.schemeType); + out.trackEncryptionBoxes[entryIndex] = sampleEntryEncryptionData.second; + } + parent.setPosition(childPosition); + } + // TODO: Uncomment when [Internal: b/63092960] is fixed. + // else { + // drmInitData = null; + // } + + List initializationData = null; + String mimeType = null; + String codecs = null; + byte[] projectionData = null; + @C.StereoMode + int stereoMode = Format.NO_VALUE; + while (childPosition - position < size) { + parent.setPosition(childPosition); + int childStartPosition = parent.getPosition(); + int childAtomSize = parent.readInt(); + if (childAtomSize == 0 && parent.getPosition() - position == size) { + // Handle optional terminating four zero bytes in MOV files. + break; + } + Assertions.checkArgument(childAtomSize > 0, "childAtomSize should be positive"); + int childAtomType = parent.readInt(); + if (childAtomType == Atom.TYPE_avcC) { + Assertions.checkState(mimeType == null); + mimeType = MimeTypes.VIDEO_H264; + parent.setPosition(childStartPosition + Atom.HEADER_SIZE); + AvcConfig avcConfig = AvcConfig.parse(parent); + initializationData = avcConfig.initializationData; + out.nalUnitLengthFieldLength = avcConfig.nalUnitLengthFieldLength; + if (!pixelWidthHeightRatioFromPasp) { + pixelWidthHeightRatio = avcConfig.pixelWidthAspectRatio; + } + } else if (childAtomType == Atom.TYPE_hvcC) { + Assertions.checkState(mimeType == null); + mimeType = MimeTypes.VIDEO_H265; + parent.setPosition(childStartPosition + Atom.HEADER_SIZE); + HevcConfig hevcConfig = HevcConfig.parse(parent); + initializationData = hevcConfig.initializationData; + out.nalUnitLengthFieldLength = hevcConfig.nalUnitLengthFieldLength; + } else if (childAtomType == Atom.TYPE_dvcC || childAtomType == Atom.TYPE_dvvC) { + DolbyVisionConfig dolbyVisionConfig = DolbyVisionConfig.parse(parent); + if (dolbyVisionConfig != null) { + codecs = dolbyVisionConfig.codecs; + mimeType = MimeTypes.VIDEO_DOLBY_VISION; + } + } else if (childAtomType == Atom.TYPE_vpcC) { + Assertions.checkState(mimeType == null); + mimeType = (atomType == Atom.TYPE_vp08) ? MimeTypes.VIDEO_VP8 : MimeTypes.VIDEO_VP9; + } else if (childAtomType == Atom.TYPE_av1C) { + Assertions.checkState(mimeType == null); + mimeType = MimeTypes.VIDEO_AV1; + } else if (childAtomType == Atom.TYPE_d263) { + Assertions.checkState(mimeType == null); + mimeType = MimeTypes.VIDEO_H263; + } else if (childAtomType == Atom.TYPE_esds) { + Assertions.checkState(mimeType == null); + Pair mimeTypeAndInitializationData = + parseEsdsFromParent(parent, childStartPosition); + mimeType = mimeTypeAndInitializationData.first; + initializationData = Collections.singletonList(mimeTypeAndInitializationData.second); + } else if (childAtomType == Atom.TYPE_pasp) { + pixelWidthHeightRatio = parsePaspFromParent(parent, childStartPosition); + pixelWidthHeightRatioFromPasp = true; + } else if (childAtomType == Atom.TYPE_sv3d) { + projectionData = parseProjFromParent(parent, childStartPosition, childAtomSize); + } else if (childAtomType == Atom.TYPE_st3d) { + int version = parent.readUnsignedByte(); + parent.skipBytes(3); // Flags. + if (version == 0) { + int layout = parent.readUnsignedByte(); + switch (layout) { + case 0: + stereoMode = C.STEREO_MODE_MONO; + break; + case 1: + stereoMode = C.STEREO_MODE_TOP_BOTTOM; + break; + case 2: + stereoMode = C.STEREO_MODE_LEFT_RIGHT; + break; + case 3: + stereoMode = C.STEREO_MODE_STEREO_MESH; + break; + default: + break; + } + } + } + childPosition += childAtomSize; + } + + // If the media type was not recognized, ignore the track. + if (mimeType == null) { + return; + } + + out.format = + Format.createVideoSampleFormat( + Integer.toString(trackId), + mimeType, + codecs, + /* bitrate= */ Format.NO_VALUE, + /* maxInputSize= */ Format.NO_VALUE, + width, + height, + /* frameRate= */ Format.NO_VALUE, + initializationData, + rotationDegrees, + pixelWidthHeightRatio, + projectionData, + stereoMode, + /* colorInfo= */ null, + drmInitData); + } + + /** + * Parses the edts atom (defined in 14496-12 subsection 8.6.5). + * + * @param edtsAtom edts (edit box) atom to decode. + * @return Pair of edit list durations and edit list media times, or a pair of nulls if they are + * not present. + */ + private static Pair parseEdts(Atom.ContainerAtom edtsAtom) { + Atom.LeafAtom elst; + if (edtsAtom == null || (elst = edtsAtom.getLeafAtomOfType(Atom.TYPE_elst)) == null) { + return Pair.create(null, null); + } + ParsableByteArray elstData = elst.data; + elstData.setPosition(Atom.HEADER_SIZE); + int fullAtom = elstData.readInt(); + int version = Atom.parseFullAtomVersion(fullAtom); + int entryCount = elstData.readUnsignedIntToInt(); + long[] editListDurations = new long[entryCount]; + long[] editListMediaTimes = new long[entryCount]; + for (int i = 0; i < entryCount; i++) { + editListDurations[i] = + version == 1 ? elstData.readUnsignedLongToLong() : elstData.readUnsignedInt(); + editListMediaTimes[i] = version == 1 ? elstData.readLong() : elstData.readInt(); + int mediaRateInteger = elstData.readShort(); + if (mediaRateInteger != 1) { + // The extractor does not handle dwell edits (mediaRateInteger == 0). + throw new IllegalArgumentException("Unsupported media rate."); + } + elstData.skipBytes(2); + } + return Pair.create(editListDurations, editListMediaTimes); + } + + private static float parsePaspFromParent(ParsableByteArray parent, int position) { + parent.setPosition(position + Atom.HEADER_SIZE); + int hSpacing = parent.readUnsignedIntToInt(); + int vSpacing = parent.readUnsignedIntToInt(); + return (float) hSpacing / vSpacing; + } + + private static void parseAudioSampleEntry(ParsableByteArray parent, int atomType, int position, + int size, int trackId, String language, boolean isQuickTime, DrmInitData drmInitData, + StsdData out, int entryIndex) throws ParserException { + parent.setPosition(position + Atom.HEADER_SIZE + StsdData.STSD_HEADER_SIZE); + + int quickTimeSoundDescriptionVersion = 0; + if (isQuickTime) { + quickTimeSoundDescriptionVersion = parent.readUnsignedShort(); + parent.skipBytes(6); + } else { + parent.skipBytes(8); + } + + int channelCount; + int sampleRate; + @C.PcmEncoding int pcmEncoding = Format.NO_VALUE; + + if (quickTimeSoundDescriptionVersion == 0 || quickTimeSoundDescriptionVersion == 1) { + channelCount = parent.readUnsignedShort(); + parent.skipBytes(6); // sampleSize, compressionId, packetSize. + sampleRate = parent.readUnsignedFixedPoint1616(); + + if (quickTimeSoundDescriptionVersion == 1) { + parent.skipBytes(16); + } + } else if (quickTimeSoundDescriptionVersion == 2) { + parent.skipBytes(16); // always[3,16,Minus2,0,65536], sizeOfStructOnly + + sampleRate = (int) Math.round(parent.readDouble()); + channelCount = parent.readUnsignedIntToInt(); + + // Skip always7F000000, sampleSize, formatSpecificFlags, constBytesPerAudioPacket, + // constLPCMFramesPerAudioPacket. + parent.skipBytes(20); + } else { + // Unsupported version. + return; + } + + int childPosition = parent.getPosition(); + if (atomType == Atom.TYPE_enca) { + Pair sampleEntryEncryptionData = parseSampleEntryEncryptionData( + parent, position, size); + if (sampleEntryEncryptionData != null) { + atomType = sampleEntryEncryptionData.first; + drmInitData = drmInitData == null ? null + : drmInitData.copyWithSchemeType(sampleEntryEncryptionData.second.schemeType); + out.trackEncryptionBoxes[entryIndex] = sampleEntryEncryptionData.second; + } + parent.setPosition(childPosition); + } + // TODO: Uncomment when [Internal: b/63092960] is fixed. + // else { + // drmInitData = null; + // } + + // If the atom type determines a MIME type, set it immediately. + String mimeType = null; + if (atomType == Atom.TYPE_ac_3) { + mimeType = MimeTypes.AUDIO_AC3; + } else if (atomType == Atom.TYPE_ec_3) { + mimeType = MimeTypes.AUDIO_E_AC3; + } else if (atomType == Atom.TYPE_ac_4) { + mimeType = MimeTypes.AUDIO_AC4; + } else if (atomType == Atom.TYPE_dtsc) { + mimeType = MimeTypes.AUDIO_DTS; + } else if (atomType == Atom.TYPE_dtsh || atomType == Atom.TYPE_dtsl) { + mimeType = MimeTypes.AUDIO_DTS_HD; + } else if (atomType == Atom.TYPE_dtse) { + mimeType = MimeTypes.AUDIO_DTS_EXPRESS; + } else if (atomType == Atom.TYPE_samr) { + mimeType = MimeTypes.AUDIO_AMR_NB; + } else if (atomType == Atom.TYPE_sawb) { + mimeType = MimeTypes.AUDIO_AMR_WB; + } else if (atomType == Atom.TYPE_lpcm || atomType == Atom.TYPE_sowt) { + mimeType = MimeTypes.AUDIO_RAW; + pcmEncoding = C.ENCODING_PCM_16BIT; + } else if (atomType == Atom.TYPE_twos) { + mimeType = MimeTypes.AUDIO_RAW; + pcmEncoding = C.ENCODING_PCM_16BIT_BIG_ENDIAN; + } else if (atomType == Atom.TYPE__mp3) { + mimeType = MimeTypes.AUDIO_MPEG; + } else if (atomType == Atom.TYPE_alac) { + mimeType = MimeTypes.AUDIO_ALAC; + } else if (atomType == Atom.TYPE_alaw) { + mimeType = MimeTypes.AUDIO_ALAW; + } else if (atomType == Atom.TYPE_ulaw) { + mimeType = MimeTypes.AUDIO_MLAW; + } else if (atomType == Atom.TYPE_Opus) { + mimeType = MimeTypes.AUDIO_OPUS; + } else if (atomType == Atom.TYPE_fLaC) { + mimeType = MimeTypes.AUDIO_FLAC; + } + + byte[] initializationData = null; + while (childPosition - position < size) { + parent.setPosition(childPosition); + int childAtomSize = parent.readInt(); + Assertions.checkArgument(childAtomSize > 0, "childAtomSize should be positive"); + int childAtomType = parent.readInt(); + if (childAtomType == Atom.TYPE_esds || (isQuickTime && childAtomType == Atom.TYPE_wave)) { + int esdsAtomPosition = childAtomType == Atom.TYPE_esds ? childPosition + : findEsdsPosition(parent, childPosition, childAtomSize); + if (esdsAtomPosition != C.POSITION_UNSET) { + Pair mimeTypeAndInitializationData = + parseEsdsFromParent(parent, esdsAtomPosition); + mimeType = mimeTypeAndInitializationData.first; + initializationData = mimeTypeAndInitializationData.second; + if (MimeTypes.AUDIO_AAC.equals(mimeType)) { + // Update sampleRate and channelCount from the AudioSpecificConfig initialization data, + // which is more reliable. See [Internal: b/10903778]. + Pair audioSpecificConfig = + CodecSpecificDataUtil.parseAacAudioSpecificConfig(initializationData); + sampleRate = audioSpecificConfig.first; + channelCount = audioSpecificConfig.second; + } + } + } else if (childAtomType == Atom.TYPE_dac3) { + parent.setPosition(Atom.HEADER_SIZE + childPosition); + out.format = Ac3Util.parseAc3AnnexFFormat(parent, Integer.toString(trackId), language, + drmInitData); + } else if (childAtomType == Atom.TYPE_dec3) { + parent.setPosition(Atom.HEADER_SIZE + childPosition); + out.format = Ac3Util.parseEAc3AnnexFFormat(parent, Integer.toString(trackId), language, + drmInitData); + } else if (childAtomType == Atom.TYPE_dac4) { + parent.setPosition(Atom.HEADER_SIZE + childPosition); + out.format = + Ac4Util.parseAc4AnnexEFormat(parent, Integer.toString(trackId), language, drmInitData); + } else if (childAtomType == Atom.TYPE_ddts) { + out.format = Format.createAudioSampleFormat(Integer.toString(trackId), mimeType, null, + Format.NO_VALUE, Format.NO_VALUE, channelCount, sampleRate, null, drmInitData, 0, + language); + } else if (childAtomType == Atom.TYPE_dOps) { + // Build an Opus Identification Header (defined in RFC-7845) by concatenating the Opus Magic + // Signature and the body of the dOps atom. + int childAtomBodySize = childAtomSize - Atom.HEADER_SIZE; + initializationData = new byte[opusMagic.length + childAtomBodySize]; + System.arraycopy(opusMagic, 0, initializationData, 0, opusMagic.length); + parent.setPosition(childPosition + Atom.HEADER_SIZE); + parent.readBytes(initializationData, opusMagic.length, childAtomBodySize); + } else if (childAtomType == Atom.TYPE_dfLa) { + int childAtomBodySize = childAtomSize - Atom.FULL_HEADER_SIZE; + initializationData = new byte[4 + childAtomBodySize]; + initializationData[0] = 0x66; // f + initializationData[1] = 0x4C; // L + initializationData[2] = 0x61; // a + initializationData[3] = 0x43; // C + parent.setPosition(childPosition + Atom.FULL_HEADER_SIZE); + parent.readBytes(initializationData, /* offset= */ 4, childAtomBodySize); + } else if (childAtomType == Atom.TYPE_alac) { + int childAtomBodySize = childAtomSize - Atom.FULL_HEADER_SIZE; + initializationData = new byte[childAtomBodySize]; + parent.setPosition(childPosition + Atom.FULL_HEADER_SIZE); + parent.readBytes(initializationData, /* offset= */ 0, childAtomBodySize); + // Update sampleRate and channelCount from the AudioSpecificConfig initialization data, + // which is more reliable. See https://github.com/google/ExoPlayer/pull/6629. + Pair audioSpecificConfig = + CodecSpecificDataUtil.parseAlacAudioSpecificConfig(initializationData); + sampleRate = audioSpecificConfig.first; + channelCount = audioSpecificConfig.second; + } + childPosition += childAtomSize; + } + + if (out.format == null && mimeType != null) { + out.format = Format.createAudioSampleFormat(Integer.toString(trackId), mimeType, null, + Format.NO_VALUE, Format.NO_VALUE, channelCount, sampleRate, pcmEncoding, + initializationData == null ? null : Collections.singletonList(initializationData), + drmInitData, 0, language); + } + } + + /** + * Returns the position of the esds box within a parent, or {@link C#POSITION_UNSET} if no esds + * box is found + */ + private static int findEsdsPosition(ParsableByteArray parent, int position, int size) { + int childAtomPosition = parent.getPosition(); + while (childAtomPosition - position < size) { + parent.setPosition(childAtomPosition); + int childAtomSize = parent.readInt(); + Assertions.checkArgument(childAtomSize > 0, "childAtomSize should be positive"); + int childType = parent.readInt(); + if (childType == Atom.TYPE_esds) { + return childAtomPosition; + } + childAtomPosition += childAtomSize; + } + return C.POSITION_UNSET; + } + + /** + * Returns codec-specific initialization data contained in an esds box. + */ + private static Pair parseEsdsFromParent(ParsableByteArray parent, int position) { + parent.setPosition(position + Atom.HEADER_SIZE + 4); + // Start of the ES_Descriptor (defined in 14496-1) + parent.skipBytes(1); // ES_Descriptor tag + parseExpandableClassSize(parent); + parent.skipBytes(2); // ES_ID + + int flags = parent.readUnsignedByte(); + if ((flags & 0x80 /* streamDependenceFlag */) != 0) { + parent.skipBytes(2); + } + if ((flags & 0x40 /* URL_Flag */) != 0) { + parent.skipBytes(parent.readUnsignedShort()); + } + if ((flags & 0x20 /* OCRstreamFlag */) != 0) { + parent.skipBytes(2); + } + + // Start of the DecoderConfigDescriptor (defined in 14496-1) + parent.skipBytes(1); // DecoderConfigDescriptor tag + parseExpandableClassSize(parent); + + // Set the MIME type based on the object type indication (14496-1 table 5). + int objectTypeIndication = parent.readUnsignedByte(); + String mimeType = getMimeTypeFromMp4ObjectType(objectTypeIndication); + if (MimeTypes.AUDIO_MPEG.equals(mimeType) + || MimeTypes.AUDIO_DTS.equals(mimeType) + || MimeTypes.AUDIO_DTS_HD.equals(mimeType)) { + return Pair.create(mimeType, null); + } + + parent.skipBytes(12); + + // Start of the DecoderSpecificInfo. + parent.skipBytes(1); // DecoderSpecificInfo tag + int initializationDataSize = parseExpandableClassSize(parent); + byte[] initializationData = new byte[initializationDataSize]; + parent.readBytes(initializationData, 0, initializationDataSize); + return Pair.create(mimeType, initializationData); + } + + /** + * Parses encryption data from an audio/video sample entry, returning a pair consisting of the + * unencrypted atom type and a {@link TrackEncryptionBox}. Null is returned if no common + * encryption sinf atom was present. + */ + private static Pair parseSampleEntryEncryptionData( + ParsableByteArray parent, int position, int size) { + int childPosition = parent.getPosition(); + while (childPosition - position < size) { + parent.setPosition(childPosition); + int childAtomSize = parent.readInt(); + Assertions.checkArgument(childAtomSize > 0, "childAtomSize should be positive"); + int childAtomType = parent.readInt(); + if (childAtomType == Atom.TYPE_sinf) { + Pair result = parseCommonEncryptionSinfFromParent(parent, + childPosition, childAtomSize); + if (result != null) { + return result; + } + } + childPosition += childAtomSize; + } + return null; + } + + /* package */ static Pair parseCommonEncryptionSinfFromParent( + ParsableByteArray parent, int position, int size) { + int childPosition = position + Atom.HEADER_SIZE; + int schemeInformationBoxPosition = C.POSITION_UNSET; + int schemeInformationBoxSize = 0; + String schemeType = null; + Integer dataFormat = null; + while (childPosition - position < size) { + parent.setPosition(childPosition); + int childAtomSize = parent.readInt(); + int childAtomType = parent.readInt(); + if (childAtomType == Atom.TYPE_frma) { + dataFormat = parent.readInt(); + } else if (childAtomType == Atom.TYPE_schm) { + parent.skipBytes(4); + // Common encryption scheme_type values are defined in ISO/IEC 23001-7:2016, section 4.1. + schemeType = parent.readString(4); + } else if (childAtomType == Atom.TYPE_schi) { + schemeInformationBoxPosition = childPosition; + schemeInformationBoxSize = childAtomSize; + } + childPosition += childAtomSize; + } + + if (C.CENC_TYPE_cenc.equals(schemeType) || C.CENC_TYPE_cbc1.equals(schemeType) + || C.CENC_TYPE_cens.equals(schemeType) || C.CENC_TYPE_cbcs.equals(schemeType)) { + Assertions.checkArgument(dataFormat != null, "frma atom is mandatory"); + Assertions.checkArgument(schemeInformationBoxPosition != C.POSITION_UNSET, + "schi atom is mandatory"); + TrackEncryptionBox encryptionBox = parseSchiFromParent(parent, schemeInformationBoxPosition, + schemeInformationBoxSize, schemeType); + Assertions.checkArgument(encryptionBox != null, "tenc atom is mandatory"); + return Pair.create(dataFormat, encryptionBox); + } else { + return null; + } + } + + private static TrackEncryptionBox parseSchiFromParent(ParsableByteArray parent, int position, + int size, String schemeType) { + int childPosition = position + Atom.HEADER_SIZE; + while (childPosition - position < size) { + parent.setPosition(childPosition); + int childAtomSize = parent.readInt(); + int childAtomType = parent.readInt(); + if (childAtomType == Atom.TYPE_tenc) { + int fullAtom = parent.readInt(); + int version = Atom.parseFullAtomVersion(fullAtom); + parent.skipBytes(1); // reserved = 0. + int defaultCryptByteBlock = 0; + int defaultSkipByteBlock = 0; + if (version == 0) { + parent.skipBytes(1); // reserved = 0. + } else /* version 1 or greater */ { + int patternByte = parent.readUnsignedByte(); + defaultCryptByteBlock = (patternByte & 0xF0) >> 4; + defaultSkipByteBlock = patternByte & 0x0F; + } + boolean defaultIsProtected = parent.readUnsignedByte() == 1; + int defaultPerSampleIvSize = parent.readUnsignedByte(); + byte[] defaultKeyId = new byte[16]; + parent.readBytes(defaultKeyId, 0, defaultKeyId.length); + byte[] constantIv = null; + if (defaultIsProtected && defaultPerSampleIvSize == 0) { + int constantIvSize = parent.readUnsignedByte(); + constantIv = new byte[constantIvSize]; + parent.readBytes(constantIv, 0, constantIvSize); + } + return new TrackEncryptionBox(defaultIsProtected, schemeType, defaultPerSampleIvSize, + defaultKeyId, defaultCryptByteBlock, defaultSkipByteBlock, constantIv); + } + childPosition += childAtomSize; + } + return null; + } + + /** + * Parses the proj box from sv3d box, as specified by https://github.com/google/spatial-media. + */ + private static byte[] parseProjFromParent(ParsableByteArray parent, int position, int size) { + int childPosition = position + Atom.HEADER_SIZE; + while (childPosition - position < size) { + parent.setPosition(childPosition); + int childAtomSize = parent.readInt(); + int childAtomType = parent.readInt(); + if (childAtomType == Atom.TYPE_proj) { + return Arrays.copyOfRange(parent.data, childPosition, childPosition + childAtomSize); + } + childPosition += childAtomSize; + } + return null; + } + + /** + * Parses the size of an expandable class, as specified by ISO 14496-1 subsection 8.3.3. + */ + private static int parseExpandableClassSize(ParsableByteArray data) { + int currentByte = data.readUnsignedByte(); + int size = currentByte & 0x7F; + while ((currentByte & 0x80) == 0x80) { + currentByte = data.readUnsignedByte(); + size = (size << 7) | (currentByte & 0x7F); + } + return size; + } + + /** Returns whether it's possible to apply the specified edit using gapless playback info. */ + private static boolean canApplyEditWithGaplessInfo( + long[] timestamps, long duration, long editStartTime, long editEndTime) { + int lastIndex = timestamps.length - 1; + int latestDelayIndex = Util.constrainValue(MAX_GAPLESS_TRIM_SIZE_SAMPLES, 0, lastIndex); + int earliestPaddingIndex = + Util.constrainValue(timestamps.length - MAX_GAPLESS_TRIM_SIZE_SAMPLES, 0, lastIndex); + return timestamps[0] <= editStartTime + && editStartTime < timestamps[latestDelayIndex] + && timestamps[earliestPaddingIndex] < editEndTime + && editEndTime <= duration; + } + + private AtomParsers() { + // Prevent instantiation. + } + + private static final class ChunkIterator { + + public final int length; + + public int index; + public int numSamples; + public long offset; + + private final boolean chunkOffsetsAreLongs; + private final ParsableByteArray chunkOffsets; + private final ParsableByteArray stsc; + + private int nextSamplesPerChunkChangeIndex; + private int remainingSamplesPerChunkChanges; + + public ChunkIterator(ParsableByteArray stsc, ParsableByteArray chunkOffsets, + boolean chunkOffsetsAreLongs) { + this.stsc = stsc; + this.chunkOffsets = chunkOffsets; + this.chunkOffsetsAreLongs = chunkOffsetsAreLongs; + chunkOffsets.setPosition(Atom.FULL_HEADER_SIZE); + length = chunkOffsets.readUnsignedIntToInt(); + stsc.setPosition(Atom.FULL_HEADER_SIZE); + remainingSamplesPerChunkChanges = stsc.readUnsignedIntToInt(); + Assertions.checkState(stsc.readInt() == 1, "first_chunk must be 1"); + index = -1; + } + + public boolean moveNext() { + if (++index == length) { + return false; + } + offset = chunkOffsetsAreLongs ? chunkOffsets.readUnsignedLongToLong() + : chunkOffsets.readUnsignedInt(); + if (index == nextSamplesPerChunkChangeIndex) { + numSamples = stsc.readUnsignedIntToInt(); + stsc.skipBytes(4); // Skip sample_description_index + nextSamplesPerChunkChangeIndex = --remainingSamplesPerChunkChanges > 0 + ? (stsc.readUnsignedIntToInt() - 1) : C.INDEX_UNSET; + } + return true; + } + + } + + /** + * Holds data parsed from a tkhd atom. + */ + private static final class TkhdData { + + private final int id; + private final long duration; + private final int rotationDegrees; + + public TkhdData(int id, long duration, int rotationDegrees) { + this.id = id; + this.duration = duration; + this.rotationDegrees = rotationDegrees; + } + + } + + /** + * Holds data parsed from an stsd atom and its children. + */ + private static final class StsdData { + + public static final int STSD_HEADER_SIZE = 8; + + public final TrackEncryptionBox[] trackEncryptionBoxes; + + public Format format; + public int nalUnitLengthFieldLength; + @Track.Transformation + public int requiredSampleTransformation; + + public StsdData(int numberOfEntries) { + trackEncryptionBoxes = new TrackEncryptionBox[numberOfEntries]; + requiredSampleTransformation = Track.TRANSFORMATION_NONE; + } + + } + + /** + * A box containing sample sizes (e.g. stsz, stz2). + */ + private interface SampleSizeBox { + + /** + * Returns the number of samples. + */ + int getSampleCount(); + + /** + * Returns the size for the next sample. + */ + int readNextSampleSize(); + + /** + * Returns whether samples have a fixed size. + */ + boolean isFixedSampleSize(); + + } + + /** + * An stsz sample size box. + */ + /* package */ static final class StszSampleSizeBox implements SampleSizeBox { + + private final int fixedSampleSize; + private final int sampleCount; + private final ParsableByteArray data; + + public StszSampleSizeBox(Atom.LeafAtom stszAtom) { + data = stszAtom.data; + data.setPosition(Atom.FULL_HEADER_SIZE); + fixedSampleSize = data.readUnsignedIntToInt(); + sampleCount = data.readUnsignedIntToInt(); + } + + @Override + public int getSampleCount() { + return sampleCount; + } + + @Override + public int readNextSampleSize() { + return fixedSampleSize == 0 ? data.readUnsignedIntToInt() : fixedSampleSize; + } + + @Override + public boolean isFixedSampleSize() { + return fixedSampleSize != 0; + } + + } + + /** + * An stz2 sample size box. + */ + /* package */ static final class Stz2SampleSizeBox implements SampleSizeBox { + + private final ParsableByteArray data; + private final int sampleCount; + private final int fieldSize; // Can be 4, 8, or 16. + + // Used only if fieldSize == 4. + private int sampleIndex; + private int currentByte; + + public Stz2SampleSizeBox(Atom.LeafAtom stz2Atom) { + data = stz2Atom.data; + data.setPosition(Atom.FULL_HEADER_SIZE); + fieldSize = data.readUnsignedIntToInt() & 0x000000FF; + sampleCount = data.readUnsignedIntToInt(); + } + + @Override + public int getSampleCount() { + return sampleCount; + } + + @Override + public int readNextSampleSize() { + if (fieldSize == 8) { + return data.readUnsignedByte(); + } else if (fieldSize == 16) { + return data.readUnsignedShort(); + } else { + // fieldSize == 4. + if ((sampleIndex++ % 2) == 0) { + // Read the next byte into our cached byte when we are reading the upper bits. + currentByte = data.readUnsignedByte(); + // Read the upper bits from the byte and shift them to the lower 4 bits. + return (currentByte & 0xF0) >> 4; + } else { + // Mask out the upper 4 bits of the last byte we read. + return currentByte & 0x0F; + } + } + } + + @Override + public boolean isFixedSampleSize() { + return false; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/DefaultSampleValues.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/DefaultSampleValues.java new file mode 100644 index 0000000000..0942673435 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/DefaultSampleValues.java @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +/* package */ final class DefaultSampleValues { + + public final int sampleDescriptionIndex; + public final int duration; + public final int size; + public final int flags; + + public DefaultSampleValues(int sampleDescriptionIndex, int duration, int size, int flags) { + this.sampleDescriptionIndex = sampleDescriptionIndex; + this.duration = duration; + this.size = size; + this.flags = flags; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/FixedSampleSizeRechunker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/FixedSampleSizeRechunker.java new file mode 100644 index 0000000000..78d30ba582 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/FixedSampleSizeRechunker.java @@ -0,0 +1,114 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Rechunks fixed sample size media in which every sample is a key frame (e.g. uncompressed audio). + */ +/* package */ final class FixedSampleSizeRechunker { + + /** + * The result of a rechunking operation. + */ + public static final class Results { + + public final long[] offsets; + public final int[] sizes; + public final int maximumSize; + public final long[] timestamps; + public final int[] flags; + public final long duration; + + private Results( + long[] offsets, + int[] sizes, + int maximumSize, + long[] timestamps, + int[] flags, + long duration) { + this.offsets = offsets; + this.sizes = sizes; + this.maximumSize = maximumSize; + this.timestamps = timestamps; + this.flags = flags; + this.duration = duration; + } + + } + + /** + * Maximum number of bytes for each buffer in rechunked output. + */ + private static final int MAX_SAMPLE_SIZE = 8 * 1024; + + /** + * Rechunk the given fixed sample size input to produce a new sequence of samples. + * + * @param fixedSampleSize Size in bytes of each sample. + * @param chunkOffsets Chunk offsets in the MP4 stream to rechunk. + * @param chunkSampleCounts Sample counts for each of the MP4 stream's chunks. + * @param timestampDeltaInTimeUnits Timestamp delta between each sample in time units. + */ + public static Results rechunk(int fixedSampleSize, long[] chunkOffsets, int[] chunkSampleCounts, + long timestampDeltaInTimeUnits) { + int maxSampleCount = MAX_SAMPLE_SIZE / fixedSampleSize; + + // Count the number of new, rechunked buffers. + int rechunkedSampleCount = 0; + for (int chunkSampleCount : chunkSampleCounts) { + rechunkedSampleCount += Util.ceilDivide(chunkSampleCount, maxSampleCount); + } + + long[] offsets = new long[rechunkedSampleCount]; + int[] sizes = new int[rechunkedSampleCount]; + int maximumSize = 0; + long[] timestamps = new long[rechunkedSampleCount]; + int[] flags = new int[rechunkedSampleCount]; + + int originalSampleIndex = 0; + int newSampleIndex = 0; + for (int chunkIndex = 0; chunkIndex < chunkSampleCounts.length; chunkIndex++) { + int chunkSamplesRemaining = chunkSampleCounts[chunkIndex]; + long sampleOffset = chunkOffsets[chunkIndex]; + + while (chunkSamplesRemaining > 0) { + int bufferSampleCount = Math.min(maxSampleCount, chunkSamplesRemaining); + + offsets[newSampleIndex] = sampleOffset; + sizes[newSampleIndex] = fixedSampleSize * bufferSampleCount; + maximumSize = Math.max(maximumSize, sizes[newSampleIndex]); + timestamps[newSampleIndex] = (timestampDeltaInTimeUnits * originalSampleIndex); + flags[newSampleIndex] = C.BUFFER_FLAG_KEY_FRAME; + + sampleOffset += sizes[newSampleIndex]; + originalSampleIndex += bufferSampleCount; + + chunkSamplesRemaining -= bufferSampleCount; + newSampleIndex++; + } + } + long duration = timestampDeltaInTimeUnits * originalSampleIndex; + + return new Results(offsets, sizes, maximumSize, timestamps, flags, duration); + } + + private FixedSampleSizeRechunker() { + // Prevent instantiation. + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/FragmentedMp4Extractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/FragmentedMp4Extractor.java new file mode 100644 index 0000000000..291a9ade27 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/FragmentedMp4Extractor.java @@ -0,0 +1,1660 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import android.util.Pair; +import android.util.SparseArray; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac4Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData.SchemeData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ChunkIndex; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4.Atom.ContainerAtom; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4.Atom.LeafAtom; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.emsg.EventMessage; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.emsg.EventMessageEncoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea.CeaUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.ArrayDeque; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; +import java.util.UUID; + +/** Extracts data from the FMP4 container format. */ +@SuppressWarnings("ConstantField") +public class FragmentedMp4Extractor implements Extractor { + + /** Factory for {@link FragmentedMp4Extractor} instances. */ + public static final ExtractorsFactory FACTORY = + () -> new Extractor[] {new FragmentedMp4Extractor()}; + + /** + * Flags controlling the behavior of the extractor. Possible flag values are {@link + * #FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME}, {@link #FLAG_WORKAROUND_IGNORE_TFDT_BOX}, + * {@link #FLAG_ENABLE_EMSG_TRACK}, {@link #FLAG_SIDELOADED} and {@link + * #FLAG_WORKAROUND_IGNORE_EDIT_LISTS}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = { + FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME, + FLAG_WORKAROUND_IGNORE_TFDT_BOX, + FLAG_ENABLE_EMSG_TRACK, + FLAG_SIDELOADED, + FLAG_WORKAROUND_IGNORE_EDIT_LISTS + }) + public @interface Flags {} + /** + * Flag to work around an issue in some video streams where every frame is marked as a sync frame. + * The workaround overrides the sync frame flags in the stream, forcing them to false except for + * the first sample in each segment. + *

+ * This flag does nothing if the stream is not a video stream. + */ + public static final int FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME = 1; + /** Flag to ignore any tfdt boxes in the stream. */ + public static final int FLAG_WORKAROUND_IGNORE_TFDT_BOX = 1 << 1; // 2 + /** + * Flag to indicate that the extractor should output an event message metadata track. Any event + * messages in the stream will be delivered as samples to this track. + */ + public static final int FLAG_ENABLE_EMSG_TRACK = 1 << 2; // 4 + /** + * Flag to indicate that the {@link Track} was sideloaded, instead of being declared by the MP4 + * container. + */ + private static final int FLAG_SIDELOADED = 1 << 3; // 8 + /** Flag to ignore any edit lists in the stream. */ + public static final int FLAG_WORKAROUND_IGNORE_EDIT_LISTS = 1 << 4; // 16 + + private static final String TAG = "FragmentedMp4Extractor"; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int SAMPLE_GROUP_TYPE_seig = 0x73656967; + + private static final byte[] PIFF_SAMPLE_ENCRYPTION_BOX_EXTENDED_TYPE = + new byte[] {-94, 57, 79, 82, 90, -101, 79, 20, -94, 68, 108, 66, 124, 100, -115, -12}; + private static final Format EMSG_FORMAT = + Format.createSampleFormat(null, MimeTypes.APPLICATION_EMSG, Format.OFFSET_SAMPLE_RELATIVE); + + // Parser states. + private static final int STATE_READING_ATOM_HEADER = 0; + private static final int STATE_READING_ATOM_PAYLOAD = 1; + private static final int STATE_READING_ENCRYPTION_DATA = 2; + private static final int STATE_READING_SAMPLE_START = 3; + private static final int STATE_READING_SAMPLE_CONTINUE = 4; + + // Workarounds. + @Flags private final int flags; + @Nullable private final Track sideloadedTrack; + + // Sideloaded data. + private final List closedCaptionFormats; + + // Track-linked data bundle, accessible as a whole through trackID. + private final SparseArray trackBundles; + + // Temporary arrays. + private final ParsableByteArray nalStartCode; + private final ParsableByteArray nalPrefix; + private final ParsableByteArray nalBuffer; + private final byte[] scratchBytes; + private final ParsableByteArray scratch; + + // Adjusts sample timestamps. + @Nullable private final TimestampAdjuster timestampAdjuster; + + private final EventMessageEncoder eventMessageEncoder; + + // Parser state. + private final ParsableByteArray atomHeader; + private final ArrayDeque containerAtoms; + private final ArrayDeque pendingMetadataSampleInfos; + @Nullable private final TrackOutput additionalEmsgTrackOutput; + + private int parserState; + private int atomType; + private long atomSize; + private int atomHeaderBytesRead; + private ParsableByteArray atomData; + private long endOfMdatPosition; + private int pendingMetadataSampleBytes; + private long pendingSeekTimeUs; + + private long durationUs; + private long segmentIndexEarliestPresentationTimeUs; + private TrackBundle currentTrackBundle; + private int sampleSize; + private int sampleBytesWritten; + private int sampleCurrentNalBytesRemaining; + private boolean processSeiNalUnitPayload; + + // Extractor output. + private ExtractorOutput extractorOutput; + private TrackOutput[] emsgTrackOutputs; + private TrackOutput[] cea608TrackOutputs; + + // Whether extractorOutput.seekMap has been called. + private boolean haveOutputSeekMap; + + public FragmentedMp4Extractor() { + this(0); + } + + /** + * @param flags Flags that control the extractor's behavior. + */ + public FragmentedMp4Extractor(@Flags int flags) { + this(flags, /* timestampAdjuster= */ null); + } + + /** + * @param flags Flags that control the extractor's behavior. + * @param timestampAdjuster Adjusts sample timestamps. May be null if no adjustment is needed. + */ + public FragmentedMp4Extractor(@Flags int flags, @Nullable TimestampAdjuster timestampAdjuster) { + this(flags, timestampAdjuster, /* sideloadedTrack= */ null, Collections.emptyList()); + } + + /** + * @param flags Flags that control the extractor's behavior. + * @param timestampAdjuster Adjusts sample timestamps. May be null if no adjustment is needed. + * @param sideloadedTrack Sideloaded track information, in the case that the extractor will not + * receive a moov box in the input data. Null if a moov box is expected. + */ + public FragmentedMp4Extractor( + @Flags int flags, + @Nullable TimestampAdjuster timestampAdjuster, + @Nullable Track sideloadedTrack) { + this(flags, timestampAdjuster, sideloadedTrack, Collections.emptyList()); + } + + /** + * @param flags Flags that control the extractor's behavior. + * @param timestampAdjuster Adjusts sample timestamps. May be null if no adjustment is needed. + * @param sideloadedTrack Sideloaded track information, in the case that the extractor will not + * receive a moov box in the input data. Null if a moov box is expected. + * @param closedCaptionFormats For tracks that contain SEI messages, the formats of the closed + * caption channels to expose. + */ + public FragmentedMp4Extractor( + @Flags int flags, + @Nullable TimestampAdjuster timestampAdjuster, + @Nullable Track sideloadedTrack, + List closedCaptionFormats) { + this( + flags, + timestampAdjuster, + sideloadedTrack, + closedCaptionFormats, + /* additionalEmsgTrackOutput= */ null); + } + + /** + * @param flags Flags that control the extractor's behavior. + * @param timestampAdjuster Adjusts sample timestamps. May be null if no adjustment is needed. + * @param sideloadedTrack Sideloaded track information, in the case that the extractor will not + * receive a moov box in the input data. Null if a moov box is expected. + * @param closedCaptionFormats For tracks that contain SEI messages, the formats of the closed + * caption channels to expose. + * @param additionalEmsgTrackOutput An extra track output that will receive all emsg messages + * targeting the player, even if {@link #FLAG_ENABLE_EMSG_TRACK} is not set. Null if special + * handling of emsg messages for players is not required. + */ + public FragmentedMp4Extractor( + @Flags int flags, + @Nullable TimestampAdjuster timestampAdjuster, + @Nullable Track sideloadedTrack, + List closedCaptionFormats, + @Nullable TrackOutput additionalEmsgTrackOutput) { + this.flags = flags | (sideloadedTrack != null ? FLAG_SIDELOADED : 0); + this.timestampAdjuster = timestampAdjuster; + this.sideloadedTrack = sideloadedTrack; + this.closedCaptionFormats = Collections.unmodifiableList(closedCaptionFormats); + this.additionalEmsgTrackOutput = additionalEmsgTrackOutput; + eventMessageEncoder = new EventMessageEncoder(); + atomHeader = new ParsableByteArray(Atom.LONG_HEADER_SIZE); + nalStartCode = new ParsableByteArray(NalUnitUtil.NAL_START_CODE); + nalPrefix = new ParsableByteArray(5); + nalBuffer = new ParsableByteArray(); + scratchBytes = new byte[16]; + scratch = new ParsableByteArray(scratchBytes); + containerAtoms = new ArrayDeque<>(); + pendingMetadataSampleInfos = new ArrayDeque<>(); + trackBundles = new SparseArray<>(); + durationUs = C.TIME_UNSET; + pendingSeekTimeUs = C.TIME_UNSET; + segmentIndexEarliestPresentationTimeUs = C.TIME_UNSET; + enterReadingAtomHeaderState(); + } + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + return Sniffer.sniffFragmented(input); + } + + @Override + public void init(ExtractorOutput output) { + extractorOutput = output; + if (sideloadedTrack != null) { + TrackBundle bundle = new TrackBundle(output.track(0, sideloadedTrack.type)); + bundle.init(sideloadedTrack, new DefaultSampleValues(0, 0, 0, 0)); + trackBundles.put(0, bundle); + maybeInitExtraTracks(); + extractorOutput.endTracks(); + } + } + + @Override + public void seek(long position, long timeUs) { + int trackCount = trackBundles.size(); + for (int i = 0; i < trackCount; i++) { + trackBundles.valueAt(i).reset(); + } + pendingMetadataSampleInfos.clear(); + pendingMetadataSampleBytes = 0; + pendingSeekTimeUs = timeUs; + containerAtoms.clear(); + enterReadingAtomHeaderState(); + } + + @Override + public void release() { + // Do nothing + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + while (true) { + switch (parserState) { + case STATE_READING_ATOM_HEADER: + if (!readAtomHeader(input)) { + return Extractor.RESULT_END_OF_INPUT; + } + break; + case STATE_READING_ATOM_PAYLOAD: + readAtomPayload(input); + break; + case STATE_READING_ENCRYPTION_DATA: + readEncryptionData(input); + break; + default: + if (readSample(input)) { + return RESULT_CONTINUE; + } + } + } + } + + private void enterReadingAtomHeaderState() { + parserState = STATE_READING_ATOM_HEADER; + atomHeaderBytesRead = 0; + } + + private boolean readAtomHeader(ExtractorInput input) throws IOException, InterruptedException { + if (atomHeaderBytesRead == 0) { + // Read the standard length atom header. + if (!input.readFully(atomHeader.data, 0, Atom.HEADER_SIZE, true)) { + return false; + } + atomHeaderBytesRead = Atom.HEADER_SIZE; + atomHeader.setPosition(0); + atomSize = atomHeader.readUnsignedInt(); + atomType = atomHeader.readInt(); + } + + if (atomSize == Atom.DEFINES_LARGE_SIZE) { + // Read the large size. + int headerBytesRemaining = Atom.LONG_HEADER_SIZE - Atom.HEADER_SIZE; + input.readFully(atomHeader.data, Atom.HEADER_SIZE, headerBytesRemaining); + atomHeaderBytesRead += headerBytesRemaining; + atomSize = atomHeader.readUnsignedLongToLong(); + } else if (atomSize == Atom.EXTENDS_TO_END_SIZE) { + // The atom extends to the end of the file. Note that if the atom is within a container we can + // work out its size even if the input length is unknown. + long endPosition = input.getLength(); + if (endPosition == C.LENGTH_UNSET && !containerAtoms.isEmpty()) { + endPosition = containerAtoms.peek().endPosition; + } + if (endPosition != C.LENGTH_UNSET) { + atomSize = endPosition - input.getPosition() + atomHeaderBytesRead; + } + } + + if (atomSize < atomHeaderBytesRead) { + throw new ParserException("Atom size less than header length (unsupported)."); + } + + long atomPosition = input.getPosition() - atomHeaderBytesRead; + if (atomType == Atom.TYPE_moof) { + // The data positions may be updated when parsing the tfhd/trun. + int trackCount = trackBundles.size(); + for (int i = 0; i < trackCount; i++) { + TrackFragment fragment = trackBundles.valueAt(i).fragment; + fragment.atomPosition = atomPosition; + fragment.auxiliaryDataPosition = atomPosition; + fragment.dataPosition = atomPosition; + } + } + + if (atomType == Atom.TYPE_mdat) { + currentTrackBundle = null; + endOfMdatPosition = atomPosition + atomSize; + if (!haveOutputSeekMap) { + // This must be the first mdat in the stream. + extractorOutput.seekMap(new SeekMap.Unseekable(durationUs, atomPosition)); + haveOutputSeekMap = true; + } + parserState = STATE_READING_ENCRYPTION_DATA; + return true; + } + + if (shouldParseContainerAtom(atomType)) { + long endPosition = input.getPosition() + atomSize - Atom.HEADER_SIZE; + containerAtoms.push(new ContainerAtom(atomType, endPosition)); + if (atomSize == atomHeaderBytesRead) { + processAtomEnded(endPosition); + } else { + // Start reading the first child atom. + enterReadingAtomHeaderState(); + } + } else if (shouldParseLeafAtom(atomType)) { + if (atomHeaderBytesRead != Atom.HEADER_SIZE) { + throw new ParserException("Leaf atom defines extended atom size (unsupported)."); + } + if (atomSize > Integer.MAX_VALUE) { + throw new ParserException("Leaf atom with length > 2147483647 (unsupported)."); + } + atomData = new ParsableByteArray((int) atomSize); + System.arraycopy(atomHeader.data, 0, atomData.data, 0, Atom.HEADER_SIZE); + parserState = STATE_READING_ATOM_PAYLOAD; + } else { + if (atomSize > Integer.MAX_VALUE) { + throw new ParserException("Skipping atom with length > 2147483647 (unsupported)."); + } + atomData = null; + parserState = STATE_READING_ATOM_PAYLOAD; + } + + return true; + } + + private void readAtomPayload(ExtractorInput input) throws IOException, InterruptedException { + int atomPayloadSize = (int) atomSize - atomHeaderBytesRead; + if (atomData != null) { + input.readFully(atomData.data, Atom.HEADER_SIZE, atomPayloadSize); + onLeafAtomRead(new LeafAtom(atomType, atomData), input.getPosition()); + } else { + input.skipFully(atomPayloadSize); + } + processAtomEnded(input.getPosition()); + } + + private void processAtomEnded(long atomEndPosition) throws ParserException { + while (!containerAtoms.isEmpty() && containerAtoms.peek().endPosition == atomEndPosition) { + onContainerAtomRead(containerAtoms.pop()); + } + enterReadingAtomHeaderState(); + } + + private void onLeafAtomRead(LeafAtom leaf, long inputPosition) throws ParserException { + if (!containerAtoms.isEmpty()) { + containerAtoms.peek().add(leaf); + } else if (leaf.type == Atom.TYPE_sidx) { + Pair result = parseSidx(leaf.data, inputPosition); + segmentIndexEarliestPresentationTimeUs = result.first; + extractorOutput.seekMap(result.second); + haveOutputSeekMap = true; + } else if (leaf.type == Atom.TYPE_emsg) { + onEmsgLeafAtomRead(leaf.data); + } + } + + private void onContainerAtomRead(ContainerAtom container) throws ParserException { + if (container.type == Atom.TYPE_moov) { + onMoovContainerAtomRead(container); + } else if (container.type == Atom.TYPE_moof) { + onMoofContainerAtomRead(container); + } else if (!containerAtoms.isEmpty()) { + containerAtoms.peek().add(container); + } + } + + private void onMoovContainerAtomRead(ContainerAtom moov) throws ParserException { + Assertions.checkState(sideloadedTrack == null, "Unexpected moov box."); + + @Nullable DrmInitData drmInitData = getDrmInitDataFromAtoms(moov.leafChildren); + + // Read declaration of track fragments in the Moov box. + ContainerAtom mvex = moov.getContainerAtomOfType(Atom.TYPE_mvex); + SparseArray defaultSampleValuesArray = new SparseArray<>(); + long duration = C.TIME_UNSET; + int mvexChildrenSize = mvex.leafChildren.size(); + for (int i = 0; i < mvexChildrenSize; i++) { + Atom.LeafAtom atom = mvex.leafChildren.get(i); + if (atom.type == Atom.TYPE_trex) { + Pair trexData = parseTrex(atom.data); + defaultSampleValuesArray.put(trexData.first, trexData.second); + } else if (atom.type == Atom.TYPE_mehd) { + duration = parseMehd(atom.data); + } + } + + // Construction of tracks. + SparseArray tracks = new SparseArray<>(); + int moovContainerChildrenSize = moov.containerChildren.size(); + for (int i = 0; i < moovContainerChildrenSize; i++) { + Atom.ContainerAtom atom = moov.containerChildren.get(i); + if (atom.type == Atom.TYPE_trak) { + Track track = + modifyTrack( + AtomParsers.parseTrak( + atom, + moov.getLeafAtomOfType(Atom.TYPE_mvhd), + duration, + drmInitData, + (flags & FLAG_WORKAROUND_IGNORE_EDIT_LISTS) != 0, + false)); + if (track != null) { + tracks.put(track.id, track); + } + } + } + + int trackCount = tracks.size(); + if (trackBundles.size() == 0) { + // We need to create the track bundles. + for (int i = 0; i < trackCount; i++) { + Track track = tracks.valueAt(i); + TrackBundle trackBundle = new TrackBundle(extractorOutput.track(i, track.type)); + trackBundle.init(track, getDefaultSampleValues(defaultSampleValuesArray, track.id)); + trackBundles.put(track.id, trackBundle); + durationUs = Math.max(durationUs, track.durationUs); + } + maybeInitExtraTracks(); + extractorOutput.endTracks(); + } else { + Assertions.checkState(trackBundles.size() == trackCount); + for (int i = 0; i < trackCount; i++) { + Track track = tracks.valueAt(i); + trackBundles + .get(track.id) + .init(track, getDefaultSampleValues(defaultSampleValuesArray, track.id)); + } + } + } + + @Nullable + protected Track modifyTrack(@Nullable Track track) { + return track; + } + + private DefaultSampleValues getDefaultSampleValues( + SparseArray defaultSampleValuesArray, int trackId) { + if (defaultSampleValuesArray.size() == 1) { + // Ignore track id if there is only one track to cope with non-matching track indices. + // See https://github.com/google/ExoPlayer/issues/4477. + return defaultSampleValuesArray.valueAt(/* index= */ 0); + } + return Assertions.checkNotNull(defaultSampleValuesArray.get(trackId)); + } + + private void onMoofContainerAtomRead(ContainerAtom moof) throws ParserException { + parseMoof(moof, trackBundles, flags, scratchBytes); + + @Nullable DrmInitData drmInitData = getDrmInitDataFromAtoms(moof.leafChildren); + if (drmInitData != null) { + int trackCount = trackBundles.size(); + for (int i = 0; i < trackCount; i++) { + trackBundles.valueAt(i).updateDrmInitData(drmInitData); + } + } + // If we have a pending seek, advance tracks to their preceding sync frames. + if (pendingSeekTimeUs != C.TIME_UNSET) { + int trackCount = trackBundles.size(); + for (int i = 0; i < trackCount; i++) { + trackBundles.valueAt(i).seek(pendingSeekTimeUs); + } + pendingSeekTimeUs = C.TIME_UNSET; + } + } + + private void maybeInitExtraTracks() { + if (emsgTrackOutputs == null) { + emsgTrackOutputs = new TrackOutput[2]; + int emsgTrackOutputCount = 0; + if (additionalEmsgTrackOutput != null) { + emsgTrackOutputs[emsgTrackOutputCount++] = additionalEmsgTrackOutput; + } + if ((flags & FLAG_ENABLE_EMSG_TRACK) != 0) { + emsgTrackOutputs[emsgTrackOutputCount++] = + extractorOutput.track(trackBundles.size(), C.TRACK_TYPE_METADATA); + } + emsgTrackOutputs = Arrays.copyOf(emsgTrackOutputs, emsgTrackOutputCount); + + for (TrackOutput eventMessageTrackOutput : emsgTrackOutputs) { + eventMessageTrackOutput.format(EMSG_FORMAT); + } + } + if (cea608TrackOutputs == null) { + cea608TrackOutputs = new TrackOutput[closedCaptionFormats.size()]; + for (int i = 0; i < cea608TrackOutputs.length; i++) { + TrackOutput output = extractorOutput.track(trackBundles.size() + 1 + i, C.TRACK_TYPE_TEXT); + output.format(closedCaptionFormats.get(i)); + cea608TrackOutputs[i] = output; + } + } + } + + /** Handles an emsg atom (defined in 23009-1). */ + private void onEmsgLeafAtomRead(ParsableByteArray atom) { + if (emsgTrackOutputs == null || emsgTrackOutputs.length == 0) { + return; + } + atom.setPosition(Atom.HEADER_SIZE); + int fullAtom = atom.readInt(); + int version = Atom.parseFullAtomVersion(fullAtom); + String schemeIdUri; + String value; + long timescale; + long presentationTimeDeltaUs = C.TIME_UNSET; // Only set if version == 0 + long sampleTimeUs = C.TIME_UNSET; + long durationMs; + long id; + switch (version) { + case 0: + schemeIdUri = Assertions.checkNotNull(atom.readNullTerminatedString()); + value = Assertions.checkNotNull(atom.readNullTerminatedString()); + timescale = atom.readUnsignedInt(); + presentationTimeDeltaUs = + Util.scaleLargeTimestamp(atom.readUnsignedInt(), C.MICROS_PER_SECOND, timescale); + if (segmentIndexEarliestPresentationTimeUs != C.TIME_UNSET) { + sampleTimeUs = segmentIndexEarliestPresentationTimeUs + presentationTimeDeltaUs; + } + durationMs = + Util.scaleLargeTimestamp(atom.readUnsignedInt(), C.MILLIS_PER_SECOND, timescale); + id = atom.readUnsignedInt(); + break; + case 1: + timescale = atom.readUnsignedInt(); + sampleTimeUs = + Util.scaleLargeTimestamp(atom.readUnsignedLongToLong(), C.MICROS_PER_SECOND, timescale); + durationMs = + Util.scaleLargeTimestamp(atom.readUnsignedInt(), C.MILLIS_PER_SECOND, timescale); + id = atom.readUnsignedInt(); + schemeIdUri = Assertions.checkNotNull(atom.readNullTerminatedString()); + value = Assertions.checkNotNull(atom.readNullTerminatedString()); + break; + default: + Log.w(TAG, "Skipping unsupported emsg version: " + version); + return; + } + + byte[] messageData = new byte[atom.bytesLeft()]; + atom.readBytes(messageData, /*offset=*/ 0, atom.bytesLeft()); + EventMessage eventMessage = new EventMessage(schemeIdUri, value, durationMs, id, messageData); + ParsableByteArray encodedEventMessage = + new ParsableByteArray(eventMessageEncoder.encode(eventMessage)); + int sampleSize = encodedEventMessage.bytesLeft(); + + // Output the sample data. + for (TrackOutput emsgTrackOutput : emsgTrackOutputs) { + encodedEventMessage.setPosition(0); + emsgTrackOutput.sampleData(encodedEventMessage, sampleSize); + } + + // Output the sample metadata. This is made a little complicated because emsg-v0 atoms + // have presentation time *delta* while v1 atoms have absolute presentation time. + if (sampleTimeUs == C.TIME_UNSET) { + // We need the first sample timestamp in the segment before we can output the metadata. + pendingMetadataSampleInfos.addLast( + new MetadataSampleInfo(presentationTimeDeltaUs, sampleSize)); + pendingMetadataSampleBytes += sampleSize; + } else { + if (timestampAdjuster != null) { + sampleTimeUs = timestampAdjuster.adjustSampleTimestamp(sampleTimeUs); + } + for (TrackOutput emsgTrackOutput : emsgTrackOutputs) { + emsgTrackOutput.sampleMetadata( + sampleTimeUs, C.BUFFER_FLAG_KEY_FRAME, sampleSize, /* offset= */ 0, null); + } + } + } + + /** Parses a trex atom (defined in 14496-12). */ + private static Pair parseTrex(ParsableByteArray trex) { + trex.setPosition(Atom.FULL_HEADER_SIZE); + int trackId = trex.readInt(); + int defaultSampleDescriptionIndex = trex.readUnsignedIntToInt() - 1; + int defaultSampleDuration = trex.readUnsignedIntToInt(); + int defaultSampleSize = trex.readUnsignedIntToInt(); + int defaultSampleFlags = trex.readInt(); + + return Pair.create(trackId, new DefaultSampleValues(defaultSampleDescriptionIndex, + defaultSampleDuration, defaultSampleSize, defaultSampleFlags)); + } + + /** + * Parses an mehd atom (defined in 14496-12). + */ + private static long parseMehd(ParsableByteArray mehd) { + mehd.setPosition(Atom.HEADER_SIZE); + int fullAtom = mehd.readInt(); + int version = Atom.parseFullAtomVersion(fullAtom); + return version == 0 ? mehd.readUnsignedInt() : mehd.readUnsignedLongToLong(); + } + + private static void parseMoof(ContainerAtom moof, SparseArray trackBundleArray, + @Flags int flags, byte[] extendedTypeScratch) throws ParserException { + int moofContainerChildrenSize = moof.containerChildren.size(); + for (int i = 0; i < moofContainerChildrenSize; i++) { + Atom.ContainerAtom child = moof.containerChildren.get(i); + // TODO: Support multiple traf boxes per track in a single moof. + if (child.type == Atom.TYPE_traf) { + parseTraf(child, trackBundleArray, flags, extendedTypeScratch); + } + } + } + + /** + * Parses a traf atom (defined in 14496-12). + */ + private static void parseTraf(ContainerAtom traf, SparseArray trackBundleArray, + @Flags int flags, byte[] extendedTypeScratch) throws ParserException { + LeafAtom tfhd = traf.getLeafAtomOfType(Atom.TYPE_tfhd); + TrackBundle trackBundle = parseTfhd(tfhd.data, trackBundleArray); + if (trackBundle == null) { + return; + } + + TrackFragment fragment = trackBundle.fragment; + long decodeTime = fragment.nextFragmentDecodeTime; + trackBundle.reset(); + + LeafAtom tfdtAtom = traf.getLeafAtomOfType(Atom.TYPE_tfdt); + if (tfdtAtom != null && (flags & FLAG_WORKAROUND_IGNORE_TFDT_BOX) == 0) { + decodeTime = parseTfdt(traf.getLeafAtomOfType(Atom.TYPE_tfdt).data); + } + + parseTruns(traf, trackBundle, decodeTime, flags); + + TrackEncryptionBox encryptionBox = trackBundle.track + .getSampleDescriptionEncryptionBox(fragment.header.sampleDescriptionIndex); + + LeafAtom saiz = traf.getLeafAtomOfType(Atom.TYPE_saiz); + if (saiz != null) { + parseSaiz(encryptionBox, saiz.data, fragment); + } + + LeafAtom saio = traf.getLeafAtomOfType(Atom.TYPE_saio); + if (saio != null) { + parseSaio(saio.data, fragment); + } + + LeafAtom senc = traf.getLeafAtomOfType(Atom.TYPE_senc); + if (senc != null) { + parseSenc(senc.data, fragment); + } + + LeafAtom sbgp = traf.getLeafAtomOfType(Atom.TYPE_sbgp); + LeafAtom sgpd = traf.getLeafAtomOfType(Atom.TYPE_sgpd); + if (sbgp != null && sgpd != null) { + parseSgpd(sbgp.data, sgpd.data, encryptionBox != null ? encryptionBox.schemeType : null, + fragment); + } + + int leafChildrenSize = traf.leafChildren.size(); + for (int i = 0; i < leafChildrenSize; i++) { + LeafAtom atom = traf.leafChildren.get(i); + if (atom.type == Atom.TYPE_uuid) { + parseUuid(atom.data, fragment, extendedTypeScratch); + } + } + } + + private static void parseTruns(ContainerAtom traf, TrackBundle trackBundle, long decodeTime, + @Flags int flags) { + int trunCount = 0; + int totalSampleCount = 0; + List leafChildren = traf.leafChildren; + int leafChildrenSize = leafChildren.size(); + for (int i = 0; i < leafChildrenSize; i++) { + LeafAtom atom = leafChildren.get(i); + if (atom.type == Atom.TYPE_trun) { + ParsableByteArray trunData = atom.data; + trunData.setPosition(Atom.FULL_HEADER_SIZE); + int trunSampleCount = trunData.readUnsignedIntToInt(); + if (trunSampleCount > 0) { + totalSampleCount += trunSampleCount; + trunCount++; + } + } + } + trackBundle.currentTrackRunIndex = 0; + trackBundle.currentSampleInTrackRun = 0; + trackBundle.currentSampleIndex = 0; + trackBundle.fragment.initTables(trunCount, totalSampleCount); + + int trunIndex = 0; + int trunStartPosition = 0; + for (int i = 0; i < leafChildrenSize; i++) { + LeafAtom trun = leafChildren.get(i); + if (trun.type == Atom.TYPE_trun) { + trunStartPosition = parseTrun(trackBundle, trunIndex++, decodeTime, flags, trun.data, + trunStartPosition); + } + } + } + + private static void parseSaiz(TrackEncryptionBox encryptionBox, ParsableByteArray saiz, + TrackFragment out) throws ParserException { + int vectorSize = encryptionBox.perSampleIvSize; + saiz.setPosition(Atom.HEADER_SIZE); + int fullAtom = saiz.readInt(); + int flags = Atom.parseFullAtomFlags(fullAtom); + if ((flags & 0x01) == 1) { + saiz.skipBytes(8); + } + int defaultSampleInfoSize = saiz.readUnsignedByte(); + + int sampleCount = saiz.readUnsignedIntToInt(); + if (sampleCount != out.sampleCount) { + throw new ParserException("Length mismatch: " + sampleCount + ", " + out.sampleCount); + } + + int totalSize = 0; + if (defaultSampleInfoSize == 0) { + boolean[] sampleHasSubsampleEncryptionTable = out.sampleHasSubsampleEncryptionTable; + for (int i = 0; i < sampleCount; i++) { + int sampleInfoSize = saiz.readUnsignedByte(); + totalSize += sampleInfoSize; + sampleHasSubsampleEncryptionTable[i] = sampleInfoSize > vectorSize; + } + } else { + boolean subsampleEncryption = defaultSampleInfoSize > vectorSize; + totalSize += defaultSampleInfoSize * sampleCount; + Arrays.fill(out.sampleHasSubsampleEncryptionTable, 0, sampleCount, subsampleEncryption); + } + out.initEncryptionData(totalSize); + } + + /** + * Parses a saio atom (defined in 14496-12). + * + * @param saio The saio atom to decode. + * @param out The {@link TrackFragment} to populate with data from the saio atom. + */ + private static void parseSaio(ParsableByteArray saio, TrackFragment out) throws ParserException { + saio.setPosition(Atom.HEADER_SIZE); + int fullAtom = saio.readInt(); + int flags = Atom.parseFullAtomFlags(fullAtom); + if ((flags & 0x01) == 1) { + saio.skipBytes(8); + } + + int entryCount = saio.readUnsignedIntToInt(); + if (entryCount != 1) { + // We only support one trun element currently, so always expect one entry. + throw new ParserException("Unexpected saio entry count: " + entryCount); + } + + int version = Atom.parseFullAtomVersion(fullAtom); + out.auxiliaryDataPosition += + version == 0 ? saio.readUnsignedInt() : saio.readUnsignedLongToLong(); + } + + /** + * Parses a tfhd atom (defined in 14496-12), updates the corresponding {@link TrackFragment} and + * returns the {@link TrackBundle} of the corresponding {@link Track}. If the tfhd does not refer + * to any {@link TrackBundle}, {@code null} is returned and no changes are made. + * + * @param tfhd The tfhd atom to decode. + * @param trackBundles The track bundles, one of which corresponds to the tfhd atom being parsed. + * @return The {@link TrackBundle} to which the {@link TrackFragment} belongs, or null if the tfhd + * does not refer to any {@link TrackBundle}. + */ + private static TrackBundle parseTfhd( + ParsableByteArray tfhd, SparseArray trackBundles) { + tfhd.setPosition(Atom.HEADER_SIZE); + int fullAtom = tfhd.readInt(); + int atomFlags = Atom.parseFullAtomFlags(fullAtom); + int trackId = tfhd.readInt(); + TrackBundle trackBundle = getTrackBundle(trackBundles, trackId); + if (trackBundle == null) { + return null; + } + if ((atomFlags & 0x01 /* base_data_offset_present */) != 0) { + long baseDataPosition = tfhd.readUnsignedLongToLong(); + trackBundle.fragment.dataPosition = baseDataPosition; + trackBundle.fragment.auxiliaryDataPosition = baseDataPosition; + } + + DefaultSampleValues defaultSampleValues = trackBundle.defaultSampleValues; + int defaultSampleDescriptionIndex = + ((atomFlags & 0x02 /* default_sample_description_index_present */) != 0) + ? tfhd.readUnsignedIntToInt() - 1 : defaultSampleValues.sampleDescriptionIndex; + int defaultSampleDuration = ((atomFlags & 0x08 /* default_sample_duration_present */) != 0) + ? tfhd.readUnsignedIntToInt() : defaultSampleValues.duration; + int defaultSampleSize = ((atomFlags & 0x10 /* default_sample_size_present */) != 0) + ? tfhd.readUnsignedIntToInt() : defaultSampleValues.size; + int defaultSampleFlags = ((atomFlags & 0x20 /* default_sample_flags_present */) != 0) + ? tfhd.readUnsignedIntToInt() : defaultSampleValues.flags; + trackBundle.fragment.header = new DefaultSampleValues(defaultSampleDescriptionIndex, + defaultSampleDuration, defaultSampleSize, defaultSampleFlags); + return trackBundle; + } + + private static @Nullable TrackBundle getTrackBundle( + SparseArray trackBundles, int trackId) { + if (trackBundles.size() == 1) { + // Ignore track id if there is only one track. This is either because we have a side-loaded + // track (flag FLAG_SIDELOADED) or to cope with non-matching track indices (see + // https://github.com/google/ExoPlayer/issues/4083). + return trackBundles.valueAt(/* index= */ 0); + } + return trackBundles.get(trackId); + } + + /** + * Parses a tfdt atom (defined in 14496-12). + * + * @return baseMediaDecodeTime The sum of the decode durations of all earlier samples in the + * media, expressed in the media's timescale. + */ + private static long parseTfdt(ParsableByteArray tfdt) { + tfdt.setPosition(Atom.HEADER_SIZE); + int fullAtom = tfdt.readInt(); + int version = Atom.parseFullAtomVersion(fullAtom); + return version == 1 ? tfdt.readUnsignedLongToLong() : tfdt.readUnsignedInt(); + } + + /** + * Parses a trun atom (defined in 14496-12). + * + * @param trackBundle The {@link TrackBundle} that contains the {@link TrackFragment} into + * which parsed data should be placed. + * @param index Index of the track run in the fragment. + * @param decodeTime The decode time of the first sample in the fragment run. + * @param flags Flags to allow any required workaround to be executed. + * @param trun The trun atom to decode. + * @return The starting position of samples for the next run. + */ + private static int parseTrun(TrackBundle trackBundle, int index, long decodeTime, + @Flags int flags, ParsableByteArray trun, int trackRunStart) { + trun.setPosition(Atom.HEADER_SIZE); + int fullAtom = trun.readInt(); + int atomFlags = Atom.parseFullAtomFlags(fullAtom); + + Track track = trackBundle.track; + TrackFragment fragment = trackBundle.fragment; + DefaultSampleValues defaultSampleValues = fragment.header; + + fragment.trunLength[index] = trun.readUnsignedIntToInt(); + fragment.trunDataPosition[index] = fragment.dataPosition; + if ((atomFlags & 0x01 /* data_offset_present */) != 0) { + fragment.trunDataPosition[index] += trun.readInt(); + } + + boolean firstSampleFlagsPresent = (atomFlags & 0x04 /* first_sample_flags_present */) != 0; + int firstSampleFlags = defaultSampleValues.flags; + if (firstSampleFlagsPresent) { + firstSampleFlags = trun.readUnsignedIntToInt(); + } + + boolean sampleDurationsPresent = (atomFlags & 0x100 /* sample_duration_present */) != 0; + boolean sampleSizesPresent = (atomFlags & 0x200 /* sample_size_present */) != 0; + boolean sampleFlagsPresent = (atomFlags & 0x400 /* sample_flags_present */) != 0; + boolean sampleCompositionTimeOffsetsPresent = + (atomFlags & 0x800 /* sample_composition_time_offsets_present */) != 0; + + // Offset to the entire video timeline. In the presence of B-frames this is usually used to + // ensure that the first frame's presentation timestamp is zero. + long edtsOffset = 0; + + // Currently we only support a single edit that moves the entire media timeline (indicated by + // duration == 0). Other uses of edit lists are uncommon and unsupported. + if (track.editListDurations != null && track.editListDurations.length == 1 + && track.editListDurations[0] == 0) { + edtsOffset = + Util.scaleLargeTimestamp( + track.editListMediaTimes[0], C.MILLIS_PER_SECOND, track.timescale); + } + + int[] sampleSizeTable = fragment.sampleSizeTable; + int[] sampleCompositionTimeOffsetTable = fragment.sampleCompositionTimeOffsetTable; + long[] sampleDecodingTimeTable = fragment.sampleDecodingTimeTable; + boolean[] sampleIsSyncFrameTable = fragment.sampleIsSyncFrameTable; + + boolean workaroundEveryVideoFrameIsSyncFrame = track.type == C.TRACK_TYPE_VIDEO + && (flags & FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME) != 0; + + int trackRunEnd = trackRunStart + fragment.trunLength[index]; + long timescale = track.timescale; + long cumulativeTime = index > 0 ? fragment.nextFragmentDecodeTime : decodeTime; + for (int i = trackRunStart; i < trackRunEnd; i++) { + // Use trun values if present, otherwise tfhd, otherwise trex. + int sampleDuration = sampleDurationsPresent ? trun.readUnsignedIntToInt() + : defaultSampleValues.duration; + int sampleSize = sampleSizesPresent ? trun.readUnsignedIntToInt() : defaultSampleValues.size; + int sampleFlags = (i == 0 && firstSampleFlagsPresent) ? firstSampleFlags + : sampleFlagsPresent ? trun.readInt() : defaultSampleValues.flags; + if (sampleCompositionTimeOffsetsPresent) { + // The BMFF spec (ISO 14496-12) states that sample offsets should be unsigned integers in + // version 0 trun boxes, however a significant number of streams violate the spec and use + // signed integers instead. It's safe to always decode sample offsets as signed integers + // here, because unsigned integers will still be parsed correctly (unless their top bit is + // set, which is never true in practice because sample offsets are always small). + int sampleOffset = trun.readInt(); + sampleCompositionTimeOffsetTable[i] = + (int) ((sampleOffset * C.MILLIS_PER_SECOND) / timescale); + } else { + sampleCompositionTimeOffsetTable[i] = 0; + } + sampleDecodingTimeTable[i] = + Util.scaleLargeTimestamp(cumulativeTime, C.MILLIS_PER_SECOND, timescale) - edtsOffset; + sampleSizeTable[i] = sampleSize; + sampleIsSyncFrameTable[i] = ((sampleFlags >> 16) & 0x1) == 0 + && (!workaroundEveryVideoFrameIsSyncFrame || i == 0); + cumulativeTime += sampleDuration; + } + fragment.nextFragmentDecodeTime = cumulativeTime; + return trackRunEnd; + } + + private static void parseUuid(ParsableByteArray uuid, TrackFragment out, + byte[] extendedTypeScratch) throws ParserException { + uuid.setPosition(Atom.HEADER_SIZE); + uuid.readBytes(extendedTypeScratch, 0, 16); + + // Currently this parser only supports Microsoft's PIFF SampleEncryptionBox. + if (!Arrays.equals(extendedTypeScratch, PIFF_SAMPLE_ENCRYPTION_BOX_EXTENDED_TYPE)) { + return; + } + + // Except for the extended type, this box is identical to a SENC box. See "Portable encoding of + // audio-video objects: The Protected Interoperable File Format (PIFF), John A. Bocharov et al, + // Section 5.3.2.1." + parseSenc(uuid, 16, out); + } + + private static void parseSenc(ParsableByteArray senc, TrackFragment out) throws ParserException { + parseSenc(senc, 0, out); + } + + private static void parseSenc(ParsableByteArray senc, int offset, TrackFragment out) + throws ParserException { + senc.setPosition(Atom.HEADER_SIZE + offset); + int fullAtom = senc.readInt(); + int flags = Atom.parseFullAtomFlags(fullAtom); + + if ((flags & 0x01 /* override_track_encryption_box_parameters */) != 0) { + // TODO: Implement this. + throw new ParserException("Overriding TrackEncryptionBox parameters is unsupported."); + } + + boolean subsampleEncryption = (flags & 0x02 /* use_subsample_encryption */) != 0; + int sampleCount = senc.readUnsignedIntToInt(); + if (sampleCount != out.sampleCount) { + throw new ParserException("Length mismatch: " + sampleCount + ", " + out.sampleCount); + } + + Arrays.fill(out.sampleHasSubsampleEncryptionTable, 0, sampleCount, subsampleEncryption); + out.initEncryptionData(senc.bytesLeft()); + out.fillEncryptionData(senc); + } + + private static void parseSgpd(ParsableByteArray sbgp, ParsableByteArray sgpd, String schemeType, + TrackFragment out) throws ParserException { + sbgp.setPosition(Atom.HEADER_SIZE); + int sbgpFullAtom = sbgp.readInt(); + if (sbgp.readInt() != SAMPLE_GROUP_TYPE_seig) { + // Only seig grouping type is supported. + return; + } + if (Atom.parseFullAtomVersion(sbgpFullAtom) == 1) { + sbgp.skipBytes(4); // default_length. + } + if (sbgp.readInt() != 1) { // entry_count. + throw new ParserException("Entry count in sbgp != 1 (unsupported)."); + } + + sgpd.setPosition(Atom.HEADER_SIZE); + int sgpdFullAtom = sgpd.readInt(); + if (sgpd.readInt() != SAMPLE_GROUP_TYPE_seig) { + // Only seig grouping type is supported. + return; + } + int sgpdVersion = Atom.parseFullAtomVersion(sgpdFullAtom); + if (sgpdVersion == 1) { + if (sgpd.readUnsignedInt() == 0) { + throw new ParserException("Variable length description in sgpd found (unsupported)"); + } + } else if (sgpdVersion >= 2) { + sgpd.skipBytes(4); // default_sample_description_index. + } + if (sgpd.readUnsignedInt() != 1) { // entry_count. + throw new ParserException("Entry count in sgpd != 1 (unsupported)."); + } + // CencSampleEncryptionInformationGroupEntry + sgpd.skipBytes(1); // reserved = 0. + int patternByte = sgpd.readUnsignedByte(); + int cryptByteBlock = (patternByte & 0xF0) >> 4; + int skipByteBlock = patternByte & 0x0F; + boolean isProtected = sgpd.readUnsignedByte() == 1; + if (!isProtected) { + return; + } + int perSampleIvSize = sgpd.readUnsignedByte(); + byte[] keyId = new byte[16]; + sgpd.readBytes(keyId, 0, keyId.length); + byte[] constantIv = null; + if (perSampleIvSize == 0) { + int constantIvSize = sgpd.readUnsignedByte(); + constantIv = new byte[constantIvSize]; + sgpd.readBytes(constantIv, 0, constantIvSize); + } + out.definesEncryptionData = true; + out.trackEncryptionBox = new TrackEncryptionBox(isProtected, schemeType, perSampleIvSize, keyId, + cryptByteBlock, skipByteBlock, constantIv); + } + + /** + * Parses a sidx atom (defined in 14496-12). + * + * @param atom The atom data. + * @param inputPosition The input position of the first byte after the atom. + * @return A pair consisting of the earliest presentation time in microseconds, and the parsed + * {@link ChunkIndex}. + */ + private static Pair parseSidx(ParsableByteArray atom, long inputPosition) + throws ParserException { + atom.setPosition(Atom.HEADER_SIZE); + int fullAtom = atom.readInt(); + int version = Atom.parseFullAtomVersion(fullAtom); + + atom.skipBytes(4); + long timescale = atom.readUnsignedInt(); + long earliestPresentationTime; + long offset = inputPosition; + if (version == 0) { + earliestPresentationTime = atom.readUnsignedInt(); + offset += atom.readUnsignedInt(); + } else { + earliestPresentationTime = atom.readUnsignedLongToLong(); + offset += atom.readUnsignedLongToLong(); + } + long earliestPresentationTimeUs = Util.scaleLargeTimestamp(earliestPresentationTime, + C.MICROS_PER_SECOND, timescale); + + atom.skipBytes(2); + + int referenceCount = atom.readUnsignedShort(); + int[] sizes = new int[referenceCount]; + long[] offsets = new long[referenceCount]; + long[] durationsUs = new long[referenceCount]; + long[] timesUs = new long[referenceCount]; + + long time = earliestPresentationTime; + long timeUs = earliestPresentationTimeUs; + for (int i = 0; i < referenceCount; i++) { + int firstInt = atom.readInt(); + + int type = 0x80000000 & firstInt; + if (type != 0) { + throw new ParserException("Unhandled indirect reference"); + } + long referenceDuration = atom.readUnsignedInt(); + + sizes[i] = 0x7FFFFFFF & firstInt; + offsets[i] = offset; + + // Calculate time and duration values such that any rounding errors are consistent. i.e. That + // timesUs[i] + durationsUs[i] == timesUs[i + 1]. + timesUs[i] = timeUs; + time += referenceDuration; + timeUs = Util.scaleLargeTimestamp(time, C.MICROS_PER_SECOND, timescale); + durationsUs[i] = timeUs - timesUs[i]; + + atom.skipBytes(4); + offset += sizes[i]; + } + + return Pair.create(earliestPresentationTimeUs, + new ChunkIndex(sizes, offsets, durationsUs, timesUs)); + } + + private void readEncryptionData(ExtractorInput input) throws IOException, InterruptedException { + TrackBundle nextTrackBundle = null; + long nextDataOffset = Long.MAX_VALUE; + int trackBundlesSize = trackBundles.size(); + for (int i = 0; i < trackBundlesSize; i++) { + TrackFragment trackFragment = trackBundles.valueAt(i).fragment; + if (trackFragment.sampleEncryptionDataNeedsFill + && trackFragment.auxiliaryDataPosition < nextDataOffset) { + nextDataOffset = trackFragment.auxiliaryDataPosition; + nextTrackBundle = trackBundles.valueAt(i); + } + } + if (nextTrackBundle == null) { + parserState = STATE_READING_SAMPLE_START; + return; + } + int bytesToSkip = (int) (nextDataOffset - input.getPosition()); + if (bytesToSkip < 0) { + throw new ParserException("Offset to encryption data was negative."); + } + input.skipFully(bytesToSkip); + nextTrackBundle.fragment.fillEncryptionData(input); + } + + /** + * Attempts to read the next sample in the current mdat atom. The read sample may be output or + * skipped. + * + *

If there are no more samples in the current mdat atom then the parser state is transitioned + * to {@link #STATE_READING_ATOM_HEADER} and {@code false} is returned. + * + *

It is possible for a sample to be partially read in the case that an exception is thrown. In + * this case the method can be called again to read the remainder of the sample. + * + * @param input The {@link ExtractorInput} from which to read data. + * @return Whether a sample was read. The read sample may have been output or skipped. False + * indicates that there are no samples left to read in the current mdat. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + private boolean readSample(ExtractorInput input) throws IOException, InterruptedException { + if (parserState == STATE_READING_SAMPLE_START) { + if (currentTrackBundle == null) { + TrackBundle currentTrackBundle = getNextFragmentRun(trackBundles); + if (currentTrackBundle == null) { + // We've run out of samples in the current mdat. Discard any trailing data and prepare to + // read the header of the next atom. + int bytesToSkip = (int) (endOfMdatPosition - input.getPosition()); + if (bytesToSkip < 0) { + throw new ParserException("Offset to end of mdat was negative."); + } + input.skipFully(bytesToSkip); + enterReadingAtomHeaderState(); + return false; + } + + long nextDataPosition = currentTrackBundle.fragment + .trunDataPosition[currentTrackBundle.currentTrackRunIndex]; + // We skip bytes preceding the next sample to read. + int bytesToSkip = (int) (nextDataPosition - input.getPosition()); + if (bytesToSkip < 0) { + // Assume the sample data must be contiguous in the mdat with no preceding data. + Log.w(TAG, "Ignoring negative offset to sample data."); + bytesToSkip = 0; + } + input.skipFully(bytesToSkip); + this.currentTrackBundle = currentTrackBundle; + } + + sampleSize = currentTrackBundle.fragment + .sampleSizeTable[currentTrackBundle.currentSampleIndex]; + + if (currentTrackBundle.currentSampleIndex < currentTrackBundle.firstSampleToOutputIndex) { + input.skipFully(sampleSize); + currentTrackBundle.skipSampleEncryptionData(); + if (!currentTrackBundle.next()) { + currentTrackBundle = null; + } + parserState = STATE_READING_SAMPLE_START; + return true; + } + + if (currentTrackBundle.track.sampleTransformation == Track.TRANSFORMATION_CEA608_CDAT) { + sampleSize -= Atom.HEADER_SIZE; + input.skipFully(Atom.HEADER_SIZE); + } + + if (MimeTypes.AUDIO_AC4.equals(currentTrackBundle.track.format.sampleMimeType)) { + // AC4 samples need to be prefixed with a clear sample header. + sampleBytesWritten = + currentTrackBundle.outputSampleEncryptionData(sampleSize, Ac4Util.SAMPLE_HEADER_SIZE); + Ac4Util.getAc4SampleHeader(sampleSize, scratch); + currentTrackBundle.output.sampleData(scratch, Ac4Util.SAMPLE_HEADER_SIZE); + sampleBytesWritten += Ac4Util.SAMPLE_HEADER_SIZE; + } else { + sampleBytesWritten = + currentTrackBundle.outputSampleEncryptionData(sampleSize, /* clearHeaderSize= */ 0); + } + sampleSize += sampleBytesWritten; + parserState = STATE_READING_SAMPLE_CONTINUE; + sampleCurrentNalBytesRemaining = 0; + } + + TrackFragment fragment = currentTrackBundle.fragment; + Track track = currentTrackBundle.track; + TrackOutput output = currentTrackBundle.output; + int sampleIndex = currentTrackBundle.currentSampleIndex; + long sampleTimeUs = fragment.getSamplePresentationTime(sampleIndex) * 1000L; + if (timestampAdjuster != null) { + sampleTimeUs = timestampAdjuster.adjustSampleTimestamp(sampleTimeUs); + } + if (track.nalUnitLengthFieldLength != 0) { + // Zero the top three bytes of the array that we'll use to decode nal unit lengths, in case + // they're only 1 or 2 bytes long. + byte[] nalPrefixData = nalPrefix.data; + nalPrefixData[0] = 0; + nalPrefixData[1] = 0; + nalPrefixData[2] = 0; + int nalUnitPrefixLength = track.nalUnitLengthFieldLength + 1; + int nalUnitLengthFieldLengthDiff = 4 - track.nalUnitLengthFieldLength; + // NAL units are length delimited, but the decoder requires start code delimited units. + // Loop until we've written the sample to the track output, replacing length delimiters with + // start codes as we encounter them. + while (sampleBytesWritten < sampleSize) { + if (sampleCurrentNalBytesRemaining == 0) { + // Read the NAL length so that we know where we find the next one, and its type. + input.readFully(nalPrefixData, nalUnitLengthFieldLengthDiff, nalUnitPrefixLength); + nalPrefix.setPosition(0); + int nalLengthInt = nalPrefix.readInt(); + if (nalLengthInt < 1) { + throw new ParserException("Invalid NAL length"); + } + sampleCurrentNalBytesRemaining = nalLengthInt - 1; + // Write a start code for the current NAL unit. + nalStartCode.setPosition(0); + output.sampleData(nalStartCode, 4); + // Write the NAL unit type byte. + output.sampleData(nalPrefix, 1); + processSeiNalUnitPayload = cea608TrackOutputs.length > 0 + && NalUnitUtil.isNalUnitSei(track.format.sampleMimeType, nalPrefixData[4]); + sampleBytesWritten += 5; + sampleSize += nalUnitLengthFieldLengthDiff; + } else { + int writtenBytes; + if (processSeiNalUnitPayload) { + // Read and write the payload of the SEI NAL unit. + nalBuffer.reset(sampleCurrentNalBytesRemaining); + input.readFully(nalBuffer.data, 0, sampleCurrentNalBytesRemaining); + output.sampleData(nalBuffer, sampleCurrentNalBytesRemaining); + writtenBytes = sampleCurrentNalBytesRemaining; + // Unescape and process the SEI NAL unit. + int unescapedLength = NalUnitUtil.unescapeStream(nalBuffer.data, nalBuffer.limit()); + // If the format is H.265/HEVC the NAL unit header has two bytes so skip one more byte. + nalBuffer.setPosition(MimeTypes.VIDEO_H265.equals(track.format.sampleMimeType) ? 1 : 0); + nalBuffer.setLimit(unescapedLength); + CeaUtil.consume(sampleTimeUs, nalBuffer, cea608TrackOutputs); + } else { + // Write the payload of the NAL unit. + writtenBytes = output.sampleData(input, sampleCurrentNalBytesRemaining, false); + } + sampleBytesWritten += writtenBytes; + sampleCurrentNalBytesRemaining -= writtenBytes; + } + } + } else { + while (sampleBytesWritten < sampleSize) { + int writtenBytes = output.sampleData(input, sampleSize - sampleBytesWritten, false); + sampleBytesWritten += writtenBytes; + } + } + + @C.BufferFlags int sampleFlags = fragment.sampleIsSyncFrameTable[sampleIndex] + ? C.BUFFER_FLAG_KEY_FRAME : 0; + + // Encryption data. + TrackOutput.CryptoData cryptoData = null; + TrackEncryptionBox encryptionBox = currentTrackBundle.getEncryptionBoxIfEncrypted(); + if (encryptionBox != null) { + sampleFlags |= C.BUFFER_FLAG_ENCRYPTED; + cryptoData = encryptionBox.cryptoData; + } + + output.sampleMetadata(sampleTimeUs, sampleFlags, sampleSize, 0, cryptoData); + + // After we have the sampleTimeUs, we can commit all the pending metadata samples + outputPendingMetadataSamples(sampleTimeUs); + if (!currentTrackBundle.next()) { + currentTrackBundle = null; + } + parserState = STATE_READING_SAMPLE_START; + return true; + } + + private void outputPendingMetadataSamples(long sampleTimeUs) { + while (!pendingMetadataSampleInfos.isEmpty()) { + MetadataSampleInfo sampleInfo = pendingMetadataSampleInfos.removeFirst(); + pendingMetadataSampleBytes -= sampleInfo.size; + long metadataTimeUs = sampleTimeUs + sampleInfo.presentationTimeDeltaUs; + if (timestampAdjuster != null) { + metadataTimeUs = timestampAdjuster.adjustSampleTimestamp(metadataTimeUs); + } + for (TrackOutput emsgTrackOutput : emsgTrackOutputs) { + emsgTrackOutput.sampleMetadata( + metadataTimeUs, + C.BUFFER_FLAG_KEY_FRAME, + sampleInfo.size, + pendingMetadataSampleBytes, + null); + } + } + } + + /** + * Returns the {@link TrackBundle} whose fragment run has the earliest file position out of those + * yet to be consumed, or null if all have been consumed. + */ + private static TrackBundle getNextFragmentRun(SparseArray trackBundles) { + TrackBundle nextTrackBundle = null; + long nextTrackRunOffset = Long.MAX_VALUE; + + int trackBundlesSize = trackBundles.size(); + for (int i = 0; i < trackBundlesSize; i++) { + TrackBundle trackBundle = trackBundles.valueAt(i); + if (trackBundle.currentTrackRunIndex == trackBundle.fragment.trunCount) { + // This track fragment contains no more runs in the next mdat box. + } else { + long trunOffset = trackBundle.fragment.trunDataPosition[trackBundle.currentTrackRunIndex]; + if (trunOffset < nextTrackRunOffset) { + nextTrackBundle = trackBundle; + nextTrackRunOffset = trunOffset; + } + } + } + return nextTrackBundle; + } + + /** Returns DrmInitData from leaf atoms. */ + @Nullable + private static DrmInitData getDrmInitDataFromAtoms(List leafChildren) { + ArrayList schemeDatas = null; + int leafChildrenSize = leafChildren.size(); + for (int i = 0; i < leafChildrenSize; i++) { + LeafAtom child = leafChildren.get(i); + if (child.type == Atom.TYPE_pssh) { + if (schemeDatas == null) { + schemeDatas = new ArrayList<>(); + } + byte[] psshData = child.data.data; + UUID uuid = PsshAtomUtil.parseUuid(psshData); + if (uuid == null) { + Log.w(TAG, "Skipped pssh atom (failed to extract uuid)"); + } else { + schemeDatas.add(new SchemeData(uuid, MimeTypes.VIDEO_MP4, psshData)); + } + } + } + return schemeDatas == null ? null : new DrmInitData(schemeDatas); + } + + /** Returns whether the extractor should decode a leaf atom with type {@code atom}. */ + private static boolean shouldParseLeafAtom(int atom) { + return atom == Atom.TYPE_hdlr || atom == Atom.TYPE_mdhd || atom == Atom.TYPE_mvhd + || atom == Atom.TYPE_sidx || atom == Atom.TYPE_stsd || atom == Atom.TYPE_tfdt + || atom == Atom.TYPE_tfhd || atom == Atom.TYPE_tkhd || atom == Atom.TYPE_trex + || atom == Atom.TYPE_trun || atom == Atom.TYPE_pssh || atom == Atom.TYPE_saiz + || atom == Atom.TYPE_saio || atom == Atom.TYPE_senc || atom == Atom.TYPE_uuid + || atom == Atom.TYPE_sbgp || atom == Atom.TYPE_sgpd || atom == Atom.TYPE_elst + || atom == Atom.TYPE_mehd || atom == Atom.TYPE_emsg; + } + + /** Returns whether the extractor should decode a container atom with type {@code atom}. */ + private static boolean shouldParseContainerAtom(int atom) { + return atom == Atom.TYPE_moov || atom == Atom.TYPE_trak || atom == Atom.TYPE_mdia + || atom == Atom.TYPE_minf || atom == Atom.TYPE_stbl || atom == Atom.TYPE_moof + || atom == Atom.TYPE_traf || atom == Atom.TYPE_mvex || atom == Atom.TYPE_edts; + } + + /** + * Holds data corresponding to a metadata sample. + */ + private static final class MetadataSampleInfo { + + public final long presentationTimeDeltaUs; + public final int size; + + public MetadataSampleInfo(long presentationTimeDeltaUs, int size) { + this.presentationTimeDeltaUs = presentationTimeDeltaUs; + this.size = size; + } + + } + + /** + * Holds data corresponding to a single track. + */ + private static final class TrackBundle { + + private static final int SINGLE_SUBSAMPLE_ENCRYPTION_DATA_LENGTH = 8; + + public final TrackOutput output; + public final TrackFragment fragment; + public final ParsableByteArray scratch; + + public Track track; + public DefaultSampleValues defaultSampleValues; + public int currentSampleIndex; + public int currentSampleInTrackRun; + public int currentTrackRunIndex; + public int firstSampleToOutputIndex; + + private final ParsableByteArray encryptionSignalByte; + private final ParsableByteArray defaultInitializationVector; + + public TrackBundle(TrackOutput output) { + this.output = output; + fragment = new TrackFragment(); + scratch = new ParsableByteArray(); + encryptionSignalByte = new ParsableByteArray(1); + defaultInitializationVector = new ParsableByteArray(); + } + + public void init(Track track, DefaultSampleValues defaultSampleValues) { + this.track = Assertions.checkNotNull(track); + this.defaultSampleValues = Assertions.checkNotNull(defaultSampleValues); + output.format(track.format); + reset(); + } + + public void updateDrmInitData(DrmInitData drmInitData) { + TrackEncryptionBox encryptionBox = + track.getSampleDescriptionEncryptionBox(fragment.header.sampleDescriptionIndex); + String schemeType = encryptionBox != null ? encryptionBox.schemeType : null; + output.format(track.format.copyWithDrmInitData(drmInitData.copyWithSchemeType(schemeType))); + } + + /** Resets the current fragment and sample indices. */ + public void reset() { + fragment.reset(); + currentSampleIndex = 0; + currentTrackRunIndex = 0; + currentSampleInTrackRun = 0; + firstSampleToOutputIndex = 0; + } + + /** + * Advances {@link #firstSampleToOutputIndex} to point to the sync sample before the specified + * seek time in the current fragment. + * + * @param timeUs The seek time, in microseconds. + */ + public void seek(long timeUs) { + long timeMs = C.usToMs(timeUs); + int searchIndex = currentSampleIndex; + while (searchIndex < fragment.sampleCount + && fragment.getSamplePresentationTime(searchIndex) < timeMs) { + if (fragment.sampleIsSyncFrameTable[searchIndex]) { + firstSampleToOutputIndex = searchIndex; + } + searchIndex++; + } + } + + /** + * Advances the indices in the bundle to point to the next sample in the current fragment. If + * the current sample is the last one in the current fragment, then the advanced state will be + * {@code currentSampleIndex == fragment.sampleCount}, {@code currentTrackRunIndex == + * fragment.trunCount} and {@code #currentSampleInTrackRun == 0}. + * + * @return Whether the next sample is in the same track run as the previous one. + */ + public boolean next() { + currentSampleIndex++; + currentSampleInTrackRun++; + if (currentSampleInTrackRun == fragment.trunLength[currentTrackRunIndex]) { + currentTrackRunIndex++; + currentSampleInTrackRun = 0; + return false; + } + return true; + } + + /** + * Outputs the encryption data for the current sample. + * + * @param sampleSize The size of the current sample in bytes, excluding any additional clear + * header that will be prefixed to the sample by the extractor. + * @param clearHeaderSize The size of a clear header that will be prefixed to the sample by the + * extractor, or 0. + * @return The number of written bytes. + */ + public int outputSampleEncryptionData(int sampleSize, int clearHeaderSize) { + TrackEncryptionBox encryptionBox = getEncryptionBoxIfEncrypted(); + if (encryptionBox == null) { + return 0; + } + + ParsableByteArray initializationVectorData; + int vectorSize; + if (encryptionBox.perSampleIvSize != 0) { + initializationVectorData = fragment.sampleEncryptionData; + vectorSize = encryptionBox.perSampleIvSize; + } else { + // The default initialization vector should be used. + byte[] initVectorData = encryptionBox.defaultInitializationVector; + defaultInitializationVector.reset(initVectorData, initVectorData.length); + initializationVectorData = defaultInitializationVector; + vectorSize = initVectorData.length; + } + + boolean haveSubsampleEncryptionTable = + fragment.sampleHasSubsampleEncryptionTable(currentSampleIndex); + boolean writeSubsampleEncryptionData = haveSubsampleEncryptionTable || clearHeaderSize != 0; + + // Write the signal byte, containing the vector size and the subsample encryption flag. + encryptionSignalByte.data[0] = + (byte) (vectorSize | (writeSubsampleEncryptionData ? 0x80 : 0)); + encryptionSignalByte.setPosition(0); + output.sampleData(encryptionSignalByte, 1); + // Write the vector. + output.sampleData(initializationVectorData, vectorSize); + + if (!writeSubsampleEncryptionData) { + return 1 + vectorSize; + } + + if (!haveSubsampleEncryptionTable) { + // The sample is fully encrypted, except for the additional clear header that the extractor + // is going to prefix. We need to synthesize subsample encryption data that takes the header + // into account. + scratch.reset(SINGLE_SUBSAMPLE_ENCRYPTION_DATA_LENGTH); + // subsampleCount = 1 (unsigned short) + scratch.data[0] = (byte) 0; + scratch.data[1] = (byte) 1; + // clearDataSize = clearHeaderSize (unsigned short) + scratch.data[2] = (byte) ((clearHeaderSize >> 8) & 0xFF); + scratch.data[3] = (byte) (clearHeaderSize & 0xFF); + // encryptedDataSize = sampleSize (unsigned short) + scratch.data[4] = (byte) ((sampleSize >> 24) & 0xFF); + scratch.data[5] = (byte) ((sampleSize >> 16) & 0xFF); + scratch.data[6] = (byte) ((sampleSize >> 8) & 0xFF); + scratch.data[7] = (byte) (sampleSize & 0xFF); + output.sampleData(scratch, SINGLE_SUBSAMPLE_ENCRYPTION_DATA_LENGTH); + return 1 + vectorSize + SINGLE_SUBSAMPLE_ENCRYPTION_DATA_LENGTH; + } + + ParsableByteArray subsampleEncryptionData = fragment.sampleEncryptionData; + int subsampleCount = subsampleEncryptionData.readUnsignedShort(); + subsampleEncryptionData.skipBytes(-2); + int subsampleDataLength = 2 + 6 * subsampleCount; + + if (clearHeaderSize != 0) { + // We need to account for the additional clear header by adding clearHeaderSize to + // clearDataSize for the first subsample specified in the subsample encryption data. + scratch.reset(subsampleDataLength); + scratch.readBytes(subsampleEncryptionData.data, /* offset= */ 0, subsampleDataLength); + subsampleEncryptionData.skipBytes(subsampleDataLength); + + int clearDataSize = (scratch.data[2] & 0xFF) << 8 | (scratch.data[3] & 0xFF); + int adjustedClearDataSize = clearDataSize + clearHeaderSize; + scratch.data[2] = (byte) ((adjustedClearDataSize >> 8) & 0xFF); + scratch.data[3] = (byte) (adjustedClearDataSize & 0xFF); + subsampleEncryptionData = scratch; + } + + output.sampleData(subsampleEncryptionData, subsampleDataLength); + return 1 + vectorSize + subsampleDataLength; + } + + /** Skips the encryption data for the current sample. */ + private void skipSampleEncryptionData() { + TrackEncryptionBox encryptionBox = getEncryptionBoxIfEncrypted(); + if (encryptionBox == null) { + return; + } + + ParsableByteArray sampleEncryptionData = fragment.sampleEncryptionData; + if (encryptionBox.perSampleIvSize != 0) { + sampleEncryptionData.skipBytes(encryptionBox.perSampleIvSize); + } + if (fragment.sampleHasSubsampleEncryptionTable(currentSampleIndex)) { + sampleEncryptionData.skipBytes(6 * sampleEncryptionData.readUnsignedShort()); + } + } + + private TrackEncryptionBox getEncryptionBoxIfEncrypted() { + int sampleDescriptionIndex = fragment.header.sampleDescriptionIndex; + TrackEncryptionBox encryptionBox = + fragment.trackEncryptionBox != null + ? fragment.trackEncryptionBox + : track.getSampleDescriptionEncryptionBox(sampleDescriptionIndex); + return encryptionBox != null && encryptionBox.isEncrypted ? encryptionBox : null; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/MdtaMetadataEntry.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/MdtaMetadataEntry.java new file mode 100644 index 0000000000..7040df6425 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/MdtaMetadataEntry.java @@ -0,0 +1,115 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** + * Stores extensible metadata with handler type 'mdta'. See also the QuickTime File Format + * Specification. + */ +public final class MdtaMetadataEntry implements Metadata.Entry { + + /** The metadata key name. */ + public final String key; + /** The payload. The interpretation of the value depends on {@link #typeIndicator}. */ + public final byte[] value; + /** The four byte locale indicator. */ + public final int localeIndicator; + /** The four byte type indicator. */ + public final int typeIndicator; + + /** Creates a new metadata entry for the specified metadata key/value. */ + public MdtaMetadataEntry(String key, byte[] value, int localeIndicator, int typeIndicator) { + this.key = key; + this.value = value; + this.localeIndicator = localeIndicator; + this.typeIndicator = typeIndicator; + } + + private MdtaMetadataEntry(Parcel in) { + key = Util.castNonNull(in.readString()); + value = new byte[in.readInt()]; + in.readByteArray(value); + localeIndicator = in.readInt(); + typeIndicator = in.readInt(); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + MdtaMetadataEntry other = (MdtaMetadataEntry) obj; + return key.equals(other.key) + && Arrays.equals(value, other.value) + && localeIndicator == other.localeIndicator + && typeIndicator == other.typeIndicator; + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + key.hashCode(); + result = 31 * result + Arrays.hashCode(value); + result = 31 * result + localeIndicator; + result = 31 * result + typeIndicator; + return result; + } + + @Override + public String toString() { + return "mdta: key=" + key; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(key); + dest.writeInt(value.length); + dest.writeByteArray(value); + dest.writeInt(localeIndicator); + dest.writeInt(typeIndicator); + } + + @Override + public int describeContents() { + return 0; + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public MdtaMetadataEntry createFromParcel(Parcel in) { + return new MdtaMetadataEntry(in); + } + + @Override + public MdtaMetadataEntry[] newArray(int size) { + return new MdtaMetadataEntry[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/MetadataUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/MetadataUtil.java new file mode 100644 index 0000000000..7d4de0e498 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/MetadataUtil.java @@ -0,0 +1,588 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import androidx.annotation.Nullable; +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.GaplessInfoHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.ApicFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.CommentFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Frame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.InternalFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.TextInformationFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.nio.ByteBuffer; + +/** Utilities for handling metadata in MP4. */ +/* package */ final class MetadataUtil { + + private static final String TAG = "MetadataUtil"; + + // Codes that start with the copyright character (omitted) and have equivalent ID3 frames. + private static final int SHORT_TYPE_NAME_1 = 0x006e616d; + private static final int SHORT_TYPE_NAME_2 = 0x0074726b; + private static final int SHORT_TYPE_COMMENT = 0x00636d74; + private static final int SHORT_TYPE_YEAR = 0x00646179; + private static final int SHORT_TYPE_ARTIST = 0x00415254; + private static final int SHORT_TYPE_ENCODER = 0x00746f6f; + private static final int SHORT_TYPE_ALBUM = 0x00616c62; + private static final int SHORT_TYPE_COMPOSER_1 = 0x00636f6d; + private static final int SHORT_TYPE_COMPOSER_2 = 0x00777274; + private static final int SHORT_TYPE_LYRICS = 0x006c7972; + private static final int SHORT_TYPE_GENRE = 0x0067656e; + + // Codes that have equivalent ID3 frames. + private static final int TYPE_COVER_ART = 0x636f7672; + private static final int TYPE_GENRE = 0x676e7265; + private static final int TYPE_GROUPING = 0x00677270; + private static final int TYPE_DISK_NUMBER = 0x6469736b; + private static final int TYPE_TRACK_NUMBER = 0x74726b6e; + private static final int TYPE_TEMPO = 0x746d706f; + private static final int TYPE_COMPILATION = 0x6370696c; + private static final int TYPE_ALBUM_ARTIST = 0x61415254; + private static final int TYPE_SORT_TRACK_NAME = 0x736f6e6d; + private static final int TYPE_SORT_ALBUM = 0x736f616c; + private static final int TYPE_SORT_ARTIST = 0x736f6172; + private static final int TYPE_SORT_ALBUM_ARTIST = 0x736f6161; + private static final int TYPE_SORT_COMPOSER = 0x736f636f; + + // Types that do not have equivalent ID3 frames. + private static final int TYPE_RATING = 0x72746e67; + private static final int TYPE_GAPLESS_ALBUM = 0x70676170; + private static final int TYPE_TV_SORT_SHOW = 0x736f736e; + private static final int TYPE_TV_SHOW = 0x74767368; + + // Type for items that are intended for internal use by the player. + private static final int TYPE_INTERNAL = 0x2d2d2d2d; + + private static final int PICTURE_TYPE_FRONT_COVER = 3; + + // Standard genres. + @VisibleForTesting + /* package */ static final String[] STANDARD_GENRES = + new String[] { + // These are the official ID3v1 genres. + "Blues", + "Classic Rock", + "Country", + "Dance", + "Disco", + "Funk", + "Grunge", + "Hip-Hop", + "Jazz", + "Metal", + "New Age", + "Oldies", + "Other", + "Pop", + "R&B", + "Rap", + "Reggae", + "Rock", + "Techno", + "Industrial", + "Alternative", + "Ska", + "Death Metal", + "Pranks", + "Soundtrack", + "Euro-Techno", + "Ambient", + "Trip-Hop", + "Vocal", + "Jazz+Funk", + "Fusion", + "Trance", + "Classical", + "Instrumental", + "Acid", + "House", + "Game", + "Sound Clip", + "Gospel", + "Noise", + "AlternRock", + "Bass", + "Soul", + "Punk", + "Space", + "Meditative", + "Instrumental Pop", + "Instrumental Rock", + "Ethnic", + "Gothic", + "Darkwave", + "Techno-Industrial", + "Electronic", + "Pop-Folk", + "Eurodance", + "Dream", + "Southern Rock", + "Comedy", + "Cult", + "Gangsta", + "Top 40", + "Christian Rap", + "Pop/Funk", + "Jungle", + "Native American", + "Cabaret", + "New Wave", + "Psychadelic", + "Rave", + "Showtunes", + "Trailer", + "Lo-Fi", + "Tribal", + "Acid Punk", + "Acid Jazz", + "Polka", + "Retro", + "Musical", + "Rock & Roll", + "Hard Rock", + // Genres made up by the authors of Winamp (v1.91) and later added to the ID3 spec. + "Folk", + "Folk-Rock", + "National Folk", + "Swing", + "Fast Fusion", + "Bebob", + "Latin", + "Revival", + "Celtic", + "Bluegrass", + "Avantgarde", + "Gothic Rock", + "Progressive Rock", + "Psychedelic Rock", + "Symphonic Rock", + "Slow Rock", + "Big Band", + "Chorus", + "Easy Listening", + "Acoustic", + "Humour", + "Speech", + "Chanson", + "Opera", + "Chamber Music", + "Sonata", + "Symphony", + "Booty Bass", + "Primus", + "Porn Groove", + "Satire", + "Slow Jam", + "Club", + "Tango", + "Samba", + "Folklore", + "Ballad", + "Power Ballad", + "Rhythmic Soul", + "Freestyle", + "Duet", + "Punk Rock", + "Drum Solo", + "A capella", + "Euro-House", + "Dance Hall", + // Genres made up by the authors of Winamp (v1.91) but have not been added to the ID3 spec. + "Goa", + "Drum & Bass", + "Club-House", + "Hardcore", + "Terror", + "Indie", + "BritPop", + "Afro-Punk", + "Polsk Punk", + "Beat", + "Christian Gangsta Rap", + "Heavy Metal", + "Black Metal", + "Crossover", + "Contemporary Christian", + "Christian Rock", + "Merengue", + "Salsa", + "Thrash Metal", + "Anime", + "Jpop", + "Synthpop", + // Genres made up by the authors of Winamp (v5.6) but have not been added to the ID3 spec. + "Abstract", + "Art Rock", + "Baroque", + "Bhangra", + "Big beat", + "Breakbeat", + "Chillout", + "Downtempo", + "Dub", + "EBM", + "Eclectic", + "Electro", + "Electroclash", + "Emo", + "Experimental", + "Garage", + "Global", + "IDM", + "Illbient", + "Industro-Goth", + "Jam Band", + "Krautrock", + "Leftfield", + "Lounge", + "Math Rock", + "New Romantic", + "Nu-Breakz", + "Post-Punk", + "Post-Rock", + "Psytrance", + "Shoegaze", + "Space Rock", + "Trop Rock", + "World Music", + "Neoclassical", + "Audiobook", + "Audio theatre", + "Neue Deutsche Welle", + "Podcast", + "Indie-Rock", + "G-Funk", + "Dubstep", + "Garage Rock", + "Psybient" + }; + + private static final String LANGUAGE_UNDEFINED = "und"; + + private static final int TYPE_TOP_BYTE_COPYRIGHT = 0xA9; + private static final int TYPE_TOP_BYTE_REPLACEMENT = 0xFD; // Truncated value of \uFFFD. + + private static final String MDTA_KEY_ANDROID_CAPTURE_FPS = "com.android.capture.fps"; + private static final int MDTA_TYPE_INDICATOR_FLOAT = 23; + + private MetadataUtil() {} + + /** + * Returns a {@link Format} that is the same as the input format but includes information from the + * specified sources of metadata. + */ + public static Format getFormatWithMetadata( + int trackType, + Format format, + @Nullable Metadata udtaMetadata, + @Nullable Metadata mdtaMetadata, + GaplessInfoHolder gaplessInfoHolder) { + if (trackType == C.TRACK_TYPE_AUDIO) { + if (gaplessInfoHolder.hasGaplessInfo()) { + format = + format.copyWithGaplessInfo( + gaplessInfoHolder.encoderDelay, gaplessInfoHolder.encoderPadding); + } + // We assume all udta metadata is associated with the audio track. + if (udtaMetadata != null) { + format = format.copyWithMetadata(udtaMetadata); + } + } else if (trackType == C.TRACK_TYPE_VIDEO && mdtaMetadata != null) { + // Populate only metadata keys that are known to be specific to video. + for (int i = 0; i < mdtaMetadata.length(); i++) { + Metadata.Entry entry = mdtaMetadata.get(i); + if (entry instanceof MdtaMetadataEntry) { + MdtaMetadataEntry mdtaMetadataEntry = (MdtaMetadataEntry) entry; + if (MDTA_KEY_ANDROID_CAPTURE_FPS.equals(mdtaMetadataEntry.key) + && mdtaMetadataEntry.typeIndicator == MDTA_TYPE_INDICATOR_FLOAT) { + try { + float fps = ByteBuffer.wrap(mdtaMetadataEntry.value).asFloatBuffer().get(); + format = format.copyWithFrameRate(fps); + format = format.copyWithMetadata(new Metadata(mdtaMetadataEntry)); + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring invalid framerate"); + } + } + } + } + } + return format; + } + + /** + * Parses a single userdata ilst element from a {@link ParsableByteArray}. The element is read + * starting from the current position of the {@link ParsableByteArray}, and the position is + * advanced by the size of the element. The position is advanced even if the element's type is + * unrecognized. + * + * @param ilst Holds the data to be parsed. + * @return The parsed element, or null if the element's type was not recognized. + */ + @Nullable + public static Metadata.Entry parseIlstElement(ParsableByteArray ilst) { + int position = ilst.getPosition(); + int endPosition = position + ilst.readInt(); + int type = ilst.readInt(); + int typeTopByte = (type >> 24) & 0xFF; + try { + if (typeTopByte == TYPE_TOP_BYTE_COPYRIGHT || typeTopByte == TYPE_TOP_BYTE_REPLACEMENT) { + int shortType = type & 0x00FFFFFF; + if (shortType == SHORT_TYPE_COMMENT) { + return parseCommentAttribute(type, ilst); + } else if (shortType == SHORT_TYPE_NAME_1 || shortType == SHORT_TYPE_NAME_2) { + return parseTextAttribute(type, "TIT2", ilst); + } else if (shortType == SHORT_TYPE_COMPOSER_1 || shortType == SHORT_TYPE_COMPOSER_2) { + return parseTextAttribute(type, "TCOM", ilst); + } else if (shortType == SHORT_TYPE_YEAR) { + return parseTextAttribute(type, "TDRC", ilst); + } else if (shortType == SHORT_TYPE_ARTIST) { + return parseTextAttribute(type, "TPE1", ilst); + } else if (shortType == SHORT_TYPE_ENCODER) { + return parseTextAttribute(type, "TSSE", ilst); + } else if (shortType == SHORT_TYPE_ALBUM) { + return parseTextAttribute(type, "TALB", ilst); + } else if (shortType == SHORT_TYPE_LYRICS) { + return parseTextAttribute(type, "USLT", ilst); + } else if (shortType == SHORT_TYPE_GENRE) { + return parseTextAttribute(type, "TCON", ilst); + } else if (shortType == TYPE_GROUPING) { + return parseTextAttribute(type, "TIT1", ilst); + } + } else if (type == TYPE_GENRE) { + return parseStandardGenreAttribute(ilst); + } else if (type == TYPE_DISK_NUMBER) { + return parseIndexAndCountAttribute(type, "TPOS", ilst); + } else if (type == TYPE_TRACK_NUMBER) { + return parseIndexAndCountAttribute(type, "TRCK", ilst); + } else if (type == TYPE_TEMPO) { + return parseUint8Attribute(type, "TBPM", ilst, true, false); + } else if (type == TYPE_COMPILATION) { + return parseUint8Attribute(type, "TCMP", ilst, true, true); + } else if (type == TYPE_COVER_ART) { + return parseCoverArt(ilst); + } else if (type == TYPE_ALBUM_ARTIST) { + return parseTextAttribute(type, "TPE2", ilst); + } else if (type == TYPE_SORT_TRACK_NAME) { + return parseTextAttribute(type, "TSOT", ilst); + } else if (type == TYPE_SORT_ALBUM) { + return parseTextAttribute(type, "TSO2", ilst); + } else if (type == TYPE_SORT_ARTIST) { + return parseTextAttribute(type, "TSOA", ilst); + } else if (type == TYPE_SORT_ALBUM_ARTIST) { + return parseTextAttribute(type, "TSOP", ilst); + } else if (type == TYPE_SORT_COMPOSER) { + return parseTextAttribute(type, "TSOC", ilst); + } else if (type == TYPE_RATING) { + return parseUint8Attribute(type, "ITUNESADVISORY", ilst, false, false); + } else if (type == TYPE_GAPLESS_ALBUM) { + return parseUint8Attribute(type, "ITUNESGAPLESS", ilst, false, true); + } else if (type == TYPE_TV_SORT_SHOW) { + return parseTextAttribute(type, "TVSHOWSORT", ilst); + } else if (type == TYPE_TV_SHOW) { + return parseTextAttribute(type, "TVSHOW", ilst); + } else if (type == TYPE_INTERNAL) { + return parseInternalAttribute(ilst, endPosition); + } + Log.d(TAG, "Skipped unknown metadata entry: " + Atom.getAtomTypeString(type)); + return null; + } finally { + ilst.setPosition(endPosition); + } + } + + /** + * Parses an 'mdta' metadata entry starting at the current position in an ilst box. + * + * @param ilst The ilst box. + * @param endPosition The end position of the entry in the ilst box. + * @param key The mdta metadata entry key for the entry. + * @return The parsed element, or null if the entry wasn't recognized. + */ + @Nullable + public static MdtaMetadataEntry parseMdtaMetadataEntryFromIlst( + ParsableByteArray ilst, int endPosition, String key) { + int atomPosition; + while ((atomPosition = ilst.getPosition()) < endPosition) { + int atomSize = ilst.readInt(); + int atomType = ilst.readInt(); + if (atomType == Atom.TYPE_data) { + int typeIndicator = ilst.readInt(); + int localeIndicator = ilst.readInt(); + int dataSize = atomSize - 16; + byte[] value = new byte[dataSize]; + ilst.readBytes(value, 0, dataSize); + return new MdtaMetadataEntry(key, value, localeIndicator, typeIndicator); + } + ilst.setPosition(atomPosition + atomSize); + } + return null; + } + + @Nullable + private static TextInformationFrame parseTextAttribute( + int type, String id, ParsableByteArray data) { + int atomSize = data.readInt(); + int atomType = data.readInt(); + if (atomType == Atom.TYPE_data) { + data.skipBytes(8); // version (1), flags (3), empty (4) + String value = data.readNullTerminatedString(atomSize - 16); + return new TextInformationFrame(id, /* description= */ null, value); + } + Log.w(TAG, "Failed to parse text attribute: " + Atom.getAtomTypeString(type)); + return null; + } + + @Nullable + private static CommentFrame parseCommentAttribute(int type, ParsableByteArray data) { + int atomSize = data.readInt(); + int atomType = data.readInt(); + if (atomType == Atom.TYPE_data) { + data.skipBytes(8); // version (1), flags (3), empty (4) + String value = data.readNullTerminatedString(atomSize - 16); + return new CommentFrame(LANGUAGE_UNDEFINED, value, value); + } + Log.w(TAG, "Failed to parse comment attribute: " + Atom.getAtomTypeString(type)); + return null; + } + + @Nullable + private static Id3Frame parseUint8Attribute( + int type, + String id, + ParsableByteArray data, + boolean isTextInformationFrame, + boolean isBoolean) { + int value = parseUint8AttributeValue(data); + if (isBoolean) { + value = Math.min(1, value); + } + if (value >= 0) { + return isTextInformationFrame + ? new TextInformationFrame(id, /* description= */ null, Integer.toString(value)) + : new CommentFrame(LANGUAGE_UNDEFINED, id, Integer.toString(value)); + } + Log.w(TAG, "Failed to parse uint8 attribute: " + Atom.getAtomTypeString(type)); + return null; + } + + @Nullable + private static TextInformationFrame parseIndexAndCountAttribute( + int type, String attributeName, ParsableByteArray data) { + int atomSize = data.readInt(); + int atomType = data.readInt(); + if (atomType == Atom.TYPE_data && atomSize >= 22) { + data.skipBytes(10); // version (1), flags (3), empty (4), empty (2) + int index = data.readUnsignedShort(); + if (index > 0) { + String value = "" + index; + int count = data.readUnsignedShort(); + if (count > 0) { + value += "/" + count; + } + return new TextInformationFrame(attributeName, /* description= */ null, value); + } + } + Log.w(TAG, "Failed to parse index/count attribute: " + Atom.getAtomTypeString(type)); + return null; + } + + @Nullable + private static TextInformationFrame parseStandardGenreAttribute(ParsableByteArray data) { + int genreCode = parseUint8AttributeValue(data); + String genreString = (0 < genreCode && genreCode <= STANDARD_GENRES.length) + ? STANDARD_GENRES[genreCode - 1] : null; + if (genreString != null) { + return new TextInformationFrame("TCON", /* description= */ null, genreString); + } + Log.w(TAG, "Failed to parse standard genre code"); + return null; + } + + @Nullable + private static ApicFrame parseCoverArt(ParsableByteArray data) { + int atomSize = data.readInt(); + int atomType = data.readInt(); + if (atomType == Atom.TYPE_data) { + int fullVersionInt = data.readInt(); + int flags = Atom.parseFullAtomFlags(fullVersionInt); + String mimeType = flags == 13 ? "image/jpeg" : flags == 14 ? "image/png" : null; + if (mimeType == null) { + Log.w(TAG, "Unrecognized cover art flags: " + flags); + return null; + } + data.skipBytes(4); // empty (4) + byte[] pictureData = new byte[atomSize - 16]; + data.readBytes(pictureData, 0, pictureData.length); + return new ApicFrame( + mimeType, + /* description= */ null, + /* pictureType= */ PICTURE_TYPE_FRONT_COVER, + pictureData); + } + Log.w(TAG, "Failed to parse cover art attribute"); + return null; + } + + @Nullable + private static Id3Frame parseInternalAttribute(ParsableByteArray data, int endPosition) { + String domain = null; + String name = null; + int dataAtomPosition = -1; + int dataAtomSize = -1; + while (data.getPosition() < endPosition) { + int atomPosition = data.getPosition(); + int atomSize = data.readInt(); + int atomType = data.readInt(); + data.skipBytes(4); // version (1), flags (3) + if (atomType == Atom.TYPE_mean) { + domain = data.readNullTerminatedString(atomSize - 12); + } else if (atomType == Atom.TYPE_name) { + name = data.readNullTerminatedString(atomSize - 12); + } else { + if (atomType == Atom.TYPE_data) { + dataAtomPosition = atomPosition; + dataAtomSize = atomSize; + } + data.skipBytes(atomSize - 12); + } + } + if (domain == null || name == null || dataAtomPosition == -1) { + return null; + } + data.setPosition(dataAtomPosition); + data.skipBytes(16); // size (4), type (4), version (1), flags (3), empty (4) + String value = data.readNullTerminatedString(dataAtomSize - 16); + return new InternalFrame(domain, name, value); + } + + private static int parseUint8AttributeValue(ParsableByteArray data) { + data.skipBytes(4); // atomSize + int atomType = data.readInt(); + if (atomType == Atom.TYPE_data) { + data.skipBytes(8); // version (1), flags (3), empty (4) + return data.readUnsignedByte(); + } + Log.w(TAG, "Failed to parse uint8 attribute value"); + return -1; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Mp4Extractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Mp4Extractor.java new file mode 100644 index 0000000000..254cad1eb1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Mp4Extractor.java @@ -0,0 +1,824 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac4Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.GaplessInfoHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekPoint; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4.Atom.ContainerAtom; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.ArrayDeque; +import java.util.ArrayList; +import java.util.List; + +/** + * Extracts data from the MP4 container format. + */ +public final class Mp4Extractor implements Extractor, SeekMap { + + /** Factory for {@link Mp4Extractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new Mp4Extractor()}; + + /** + * Flags controlling the behavior of the extractor. Possible flag value is {@link + * #FLAG_WORKAROUND_IGNORE_EDIT_LISTS}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {FLAG_WORKAROUND_IGNORE_EDIT_LISTS}) + public @interface Flags {} + /** + * Flag to ignore any edit lists in the stream. + */ + public static final int FLAG_WORKAROUND_IGNORE_EDIT_LISTS = 1; + + /** Parser states. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({STATE_READING_ATOM_HEADER, STATE_READING_ATOM_PAYLOAD, STATE_READING_SAMPLE}) + private @interface State {} + + private static final int STATE_READING_ATOM_HEADER = 0; + private static final int STATE_READING_ATOM_PAYLOAD = 1; + private static final int STATE_READING_SAMPLE = 2; + + /** Brand stored in the ftyp atom for QuickTime media. */ + private static final int BRAND_QUICKTIME = 0x71742020; + + /** + * When seeking within the source, if the offset is greater than or equal to this value (or the + * offset is negative), the source will be reloaded. + */ + private static final long RELOAD_MINIMUM_SEEK_DISTANCE = 256 * 1024; + + /** + * For poorly interleaved streams, the maximum byte difference one track is allowed to be read + * ahead before the source will be reloaded at a new position to read another track. + */ + private static final long MAXIMUM_READ_AHEAD_BYTES_STREAM = 10 * 1024 * 1024; + + private final @Flags int flags; + + // Temporary arrays. + private final ParsableByteArray nalStartCode; + private final ParsableByteArray nalLength; + private final ParsableByteArray scratch; + + private final ParsableByteArray atomHeader; + private final ArrayDeque containerAtoms; + + @State private int parserState; + private int atomType; + private long atomSize; + private int atomHeaderBytesRead; + private ParsableByteArray atomData; + + private int sampleTrackIndex; + private int sampleBytesRead; + private int sampleBytesWritten; + private int sampleCurrentNalBytesRemaining; + + // Extractor outputs. + private ExtractorOutput extractorOutput; + private Mp4Track[] tracks; + private long[][] accumulatedSampleSizes; + private int firstVideoTrackIndex; + private long durationUs; + private boolean isQuickTime; + + /** + * Creates a new extractor for unfragmented MP4 streams. + */ + public Mp4Extractor() { + this(0); + } + + /** + * Creates a new extractor for unfragmented MP4 streams, using the specified flags to control the + * extractor's behavior. + * + * @param flags Flags that control the extractor's behavior. + */ + public Mp4Extractor(@Flags int flags) { + this.flags = flags; + atomHeader = new ParsableByteArray(Atom.LONG_HEADER_SIZE); + containerAtoms = new ArrayDeque<>(); + nalStartCode = new ParsableByteArray(NalUnitUtil.NAL_START_CODE); + nalLength = new ParsableByteArray(4); + scratch = new ParsableByteArray(); + sampleTrackIndex = C.INDEX_UNSET; + } + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + return Sniffer.sniffUnfragmented(input); + } + + @Override + public void init(ExtractorOutput output) { + extractorOutput = output; + } + + @Override + public void seek(long position, long timeUs) { + containerAtoms.clear(); + atomHeaderBytesRead = 0; + sampleTrackIndex = C.INDEX_UNSET; + sampleBytesRead = 0; + sampleBytesWritten = 0; + sampleCurrentNalBytesRemaining = 0; + if (position == 0) { + enterReadingAtomHeaderState(); + } else if (tracks != null) { + updateSampleIndices(timeUs); + } + } + + @Override + public void release() { + // Do nothing + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + while (true) { + switch (parserState) { + case STATE_READING_ATOM_HEADER: + if (!readAtomHeader(input)) { + return RESULT_END_OF_INPUT; + } + break; + case STATE_READING_ATOM_PAYLOAD: + if (readAtomPayload(input, seekPosition)) { + return RESULT_SEEK; + } + break; + case STATE_READING_SAMPLE: + return readSample(input, seekPosition); + default: + throw new IllegalStateException(); + } + } + } + + // SeekMap implementation. + + @Override + public boolean isSeekable() { + return true; + } + + @Override + public long getDurationUs() { + return durationUs; + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + if (tracks.length == 0) { + return new SeekPoints(SeekPoint.START); + } + + long firstTimeUs; + long firstOffset; + long secondTimeUs = C.TIME_UNSET; + long secondOffset = C.POSITION_UNSET; + + // If we have a video track, use it to establish one or two seek points. + if (firstVideoTrackIndex != C.INDEX_UNSET) { + TrackSampleTable sampleTable = tracks[firstVideoTrackIndex].sampleTable; + int sampleIndex = getSynchronizationSampleIndex(sampleTable, timeUs); + if (sampleIndex == C.INDEX_UNSET) { + return new SeekPoints(SeekPoint.START); + } + long sampleTimeUs = sampleTable.timestampsUs[sampleIndex]; + firstTimeUs = sampleTimeUs; + firstOffset = sampleTable.offsets[sampleIndex]; + if (sampleTimeUs < timeUs && sampleIndex < sampleTable.sampleCount - 1) { + int secondSampleIndex = sampleTable.getIndexOfLaterOrEqualSynchronizationSample(timeUs); + if (secondSampleIndex != C.INDEX_UNSET && secondSampleIndex != sampleIndex) { + secondTimeUs = sampleTable.timestampsUs[secondSampleIndex]; + secondOffset = sampleTable.offsets[secondSampleIndex]; + } + } + } else { + firstTimeUs = timeUs; + firstOffset = Long.MAX_VALUE; + } + + // Take into account other tracks. + for (int i = 0; i < tracks.length; i++) { + if (i != firstVideoTrackIndex) { + TrackSampleTable sampleTable = tracks[i].sampleTable; + firstOffset = maybeAdjustSeekOffset(sampleTable, firstTimeUs, firstOffset); + if (secondTimeUs != C.TIME_UNSET) { + secondOffset = maybeAdjustSeekOffset(sampleTable, secondTimeUs, secondOffset); + } + } + } + + SeekPoint firstSeekPoint = new SeekPoint(firstTimeUs, firstOffset); + if (secondTimeUs == C.TIME_UNSET) { + return new SeekPoints(firstSeekPoint); + } else { + SeekPoint secondSeekPoint = new SeekPoint(secondTimeUs, secondOffset); + return new SeekPoints(firstSeekPoint, secondSeekPoint); + } + } + + // Private methods. + + private void enterReadingAtomHeaderState() { + parserState = STATE_READING_ATOM_HEADER; + atomHeaderBytesRead = 0; + } + + private boolean readAtomHeader(ExtractorInput input) throws IOException, InterruptedException { + if (atomHeaderBytesRead == 0) { + // Read the standard length atom header. + if (!input.readFully(atomHeader.data, 0, Atom.HEADER_SIZE, true)) { + return false; + } + atomHeaderBytesRead = Atom.HEADER_SIZE; + atomHeader.setPosition(0); + atomSize = atomHeader.readUnsignedInt(); + atomType = atomHeader.readInt(); + } + + if (atomSize == Atom.DEFINES_LARGE_SIZE) { + // Read the large size. + int headerBytesRemaining = Atom.LONG_HEADER_SIZE - Atom.HEADER_SIZE; + input.readFully(atomHeader.data, Atom.HEADER_SIZE, headerBytesRemaining); + atomHeaderBytesRead += headerBytesRemaining; + atomSize = atomHeader.readUnsignedLongToLong(); + } else if (atomSize == Atom.EXTENDS_TO_END_SIZE) { + // The atom extends to the end of the file. Note that if the atom is within a container we can + // work out its size even if the input length is unknown. + long endPosition = input.getLength(); + if (endPosition == C.LENGTH_UNSET && !containerAtoms.isEmpty()) { + endPosition = containerAtoms.peek().endPosition; + } + if (endPosition != C.LENGTH_UNSET) { + atomSize = endPosition - input.getPosition() + atomHeaderBytesRead; + } + } + + if (atomSize < atomHeaderBytesRead) { + throw new ParserException("Atom size less than header length (unsupported)."); + } + + if (shouldParseContainerAtom(atomType)) { + long endPosition = input.getPosition() + atomSize - atomHeaderBytesRead; + if (atomSize != atomHeaderBytesRead && atomType == Atom.TYPE_meta) { + maybeSkipRemainingMetaAtomHeaderBytes(input); + } + containerAtoms.push(new ContainerAtom(atomType, endPosition)); + if (atomSize == atomHeaderBytesRead) { + processAtomEnded(endPosition); + } else { + // Start reading the first child atom. + enterReadingAtomHeaderState(); + } + } else if (shouldParseLeafAtom(atomType)) { + // We don't support parsing of leaf atoms that define extended atom sizes, or that have + // lengths greater than Integer.MAX_VALUE. + Assertions.checkState(atomHeaderBytesRead == Atom.HEADER_SIZE); + Assertions.checkState(atomSize <= Integer.MAX_VALUE); + atomData = new ParsableByteArray((int) atomSize); + System.arraycopy(atomHeader.data, 0, atomData.data, 0, Atom.HEADER_SIZE); + parserState = STATE_READING_ATOM_PAYLOAD; + } else { + atomData = null; + parserState = STATE_READING_ATOM_PAYLOAD; + } + + return true; + } + + /** + * Processes the atom payload. If {@link #atomData} is null and the size is at or above the + * threshold {@link #RELOAD_MINIMUM_SEEK_DISTANCE}, {@code true} is returned and the caller should + * restart loading at the position in {@code positionHolder}. Otherwise, the atom is read/skipped. + */ + private boolean readAtomPayload(ExtractorInput input, PositionHolder positionHolder) + throws IOException, InterruptedException { + long atomPayloadSize = atomSize - atomHeaderBytesRead; + long atomEndPosition = input.getPosition() + atomPayloadSize; + boolean seekRequired = false; + if (atomData != null) { + input.readFully(atomData.data, atomHeaderBytesRead, (int) atomPayloadSize); + if (atomType == Atom.TYPE_ftyp) { + isQuickTime = processFtypAtom(atomData); + } else if (!containerAtoms.isEmpty()) { + containerAtoms.peek().add(new Atom.LeafAtom(atomType, atomData)); + } + } else { + // We don't need the data. Skip or seek, depending on how large the atom is. + if (atomPayloadSize < RELOAD_MINIMUM_SEEK_DISTANCE) { + input.skipFully((int) atomPayloadSize); + } else { + positionHolder.position = input.getPosition() + atomPayloadSize; + seekRequired = true; + } + } + processAtomEnded(atomEndPosition); + return seekRequired && parserState != STATE_READING_SAMPLE; + } + + private void processAtomEnded(long atomEndPosition) throws ParserException { + while (!containerAtoms.isEmpty() && containerAtoms.peek().endPosition == atomEndPosition) { + Atom.ContainerAtom containerAtom = containerAtoms.pop(); + if (containerAtom.type == Atom.TYPE_moov) { + // We've reached the end of the moov atom. Process it and prepare to read samples. + processMoovAtom(containerAtom); + containerAtoms.clear(); + parserState = STATE_READING_SAMPLE; + } else if (!containerAtoms.isEmpty()) { + containerAtoms.peek().add(containerAtom); + } + } + if (parserState != STATE_READING_SAMPLE) { + enterReadingAtomHeaderState(); + } + } + + /** + * Updates the stored track metadata to reflect the contents of the specified moov atom. + */ + private void processMoovAtom(ContainerAtom moov) throws ParserException { + int firstVideoTrackIndex = C.INDEX_UNSET; + long durationUs = C.TIME_UNSET; + List tracks = new ArrayList<>(); + + // Process metadata. + Metadata udtaMetadata = null; + GaplessInfoHolder gaplessInfoHolder = new GaplessInfoHolder(); + Atom.LeafAtom udta = moov.getLeafAtomOfType(Atom.TYPE_udta); + if (udta != null) { + udtaMetadata = AtomParsers.parseUdta(udta, isQuickTime); + if (udtaMetadata != null) { + gaplessInfoHolder.setFromMetadata(udtaMetadata); + } + } + Metadata mdtaMetadata = null; + Atom.ContainerAtom meta = moov.getContainerAtomOfType(Atom.TYPE_meta); + if (meta != null) { + mdtaMetadata = AtomParsers.parseMdtaFromMeta(meta); + } + + boolean ignoreEditLists = (flags & FLAG_WORKAROUND_IGNORE_EDIT_LISTS) != 0; + ArrayList trackSampleTables = + getTrackSampleTables(moov, gaplessInfoHolder, ignoreEditLists); + + int trackCount = trackSampleTables.size(); + for (int i = 0; i < trackCount; i++) { + TrackSampleTable trackSampleTable = trackSampleTables.get(i); + Track track = trackSampleTable.track; + long trackDurationUs = + track.durationUs != C.TIME_UNSET ? track.durationUs : trackSampleTable.durationUs; + durationUs = Math.max(durationUs, trackDurationUs); + Mp4Track mp4Track = new Mp4Track(track, trackSampleTable, + extractorOutput.track(i, track.type)); + + // Each sample has up to three bytes of overhead for the start code that replaces its length. + // Allow ten source samples per output sample, like the platform extractor. + int maxInputSize = trackSampleTable.maximumSize + 3 * 10; + Format format = track.format.copyWithMaxInputSize(maxInputSize); + if (track.type == C.TRACK_TYPE_VIDEO + && trackDurationUs > 0 + && trackSampleTable.sampleCount > 1) { + float frameRate = trackSampleTable.sampleCount / (trackDurationUs / 1000000f); + format = format.copyWithFrameRate(frameRate); + } + format = + MetadataUtil.getFormatWithMetadata( + track.type, format, udtaMetadata, mdtaMetadata, gaplessInfoHolder); + mp4Track.trackOutput.format(format); + + if (track.type == C.TRACK_TYPE_VIDEO && firstVideoTrackIndex == C.INDEX_UNSET) { + firstVideoTrackIndex = tracks.size(); + } + tracks.add(mp4Track); + } + this.firstVideoTrackIndex = firstVideoTrackIndex; + this.durationUs = durationUs; + this.tracks = tracks.toArray(new Mp4Track[0]); + accumulatedSampleSizes = calculateAccumulatedSampleSizes(this.tracks); + + extractorOutput.endTracks(); + extractorOutput.seekMap(this); + } + + private ArrayList getTrackSampleTables( + ContainerAtom moov, GaplessInfoHolder gaplessInfoHolder, boolean ignoreEditLists) + throws ParserException { + ArrayList trackSampleTables = new ArrayList<>(); + for (int i = 0; i < moov.containerChildren.size(); i++) { + Atom.ContainerAtom atom = moov.containerChildren.get(i); + if (atom.type != Atom.TYPE_trak) { + continue; + } + Track track = + AtomParsers.parseTrak( + atom, + moov.getLeafAtomOfType(Atom.TYPE_mvhd), + /* duration= */ C.TIME_UNSET, + /* drmInitData= */ null, + ignoreEditLists, + isQuickTime); + if (track == null) { + continue; + } + Atom.ContainerAtom stblAtom = + atom.getContainerAtomOfType(Atom.TYPE_mdia) + .getContainerAtomOfType(Atom.TYPE_minf) + .getContainerAtomOfType(Atom.TYPE_stbl); + TrackSampleTable trackSampleTable = AtomParsers.parseStbl(track, stblAtom, gaplessInfoHolder); + if (trackSampleTable.sampleCount == 0) { + continue; + } + trackSampleTables.add(trackSampleTable); + } + return trackSampleTables; + } + + /** + * Attempts to extract the next sample in the current mdat atom for the specified track. + *

+ * Returns {@link #RESULT_SEEK} if the source should be reloaded from the position in + * {@code positionHolder}. + *

+ * Returns {@link #RESULT_END_OF_INPUT} if no samples are left. Otherwise, returns + * {@link #RESULT_CONTINUE}. + * + * @param input The {@link ExtractorInput} from which to read data. + * @param positionHolder If {@link #RESULT_SEEK} is returned, this holder is updated to hold the + * position of the required data. + * @return One of the {@code RESULT_*} flags in {@link Extractor}. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread is interrupted. + */ + private int readSample(ExtractorInput input, PositionHolder positionHolder) + throws IOException, InterruptedException { + long inputPosition = input.getPosition(); + if (sampleTrackIndex == C.INDEX_UNSET) { + sampleTrackIndex = getTrackIndexOfNextReadSample(inputPosition); + if (sampleTrackIndex == C.INDEX_UNSET) { + return RESULT_END_OF_INPUT; + } + } + Mp4Track track = tracks[sampleTrackIndex]; + TrackOutput trackOutput = track.trackOutput; + int sampleIndex = track.sampleIndex; + long position = track.sampleTable.offsets[sampleIndex]; + int sampleSize = track.sampleTable.sizes[sampleIndex]; + long skipAmount = position - inputPosition + sampleBytesRead; + if (skipAmount < 0 || skipAmount >= RELOAD_MINIMUM_SEEK_DISTANCE) { + positionHolder.position = position; + return RESULT_SEEK; + } + if (track.track.sampleTransformation == Track.TRANSFORMATION_CEA608_CDAT) { + // The sample information is contained in a cdat atom. The header must be discarded for + // committing. + skipAmount += Atom.HEADER_SIZE; + sampleSize -= Atom.HEADER_SIZE; + } + input.skipFully((int) skipAmount); + if (track.track.nalUnitLengthFieldLength != 0) { + // Zero the top three bytes of the array that we'll use to decode nal unit lengths, in case + // they're only 1 or 2 bytes long. + byte[] nalLengthData = nalLength.data; + nalLengthData[0] = 0; + nalLengthData[1] = 0; + nalLengthData[2] = 0; + int nalUnitLengthFieldLength = track.track.nalUnitLengthFieldLength; + int nalUnitLengthFieldLengthDiff = 4 - track.track.nalUnitLengthFieldLength; + // NAL units are length delimited, but the decoder requires start code delimited units. + // Loop until we've written the sample to the track output, replacing length delimiters with + // start codes as we encounter them. + while (sampleBytesWritten < sampleSize) { + if (sampleCurrentNalBytesRemaining == 0) { + // Read the NAL length so that we know where we find the next one. + input.readFully(nalLengthData, nalUnitLengthFieldLengthDiff, nalUnitLengthFieldLength); + sampleBytesRead += nalUnitLengthFieldLength; + nalLength.setPosition(0); + int nalLengthInt = nalLength.readInt(); + if (nalLengthInt < 0) { + throw new ParserException("Invalid NAL length"); + } + sampleCurrentNalBytesRemaining = nalLengthInt; + // Write a start code for the current NAL unit. + nalStartCode.setPosition(0); + trackOutput.sampleData(nalStartCode, 4); + sampleBytesWritten += 4; + sampleSize += nalUnitLengthFieldLengthDiff; + } else { + // Write the payload of the NAL unit. + int writtenBytes = trackOutput.sampleData(input, sampleCurrentNalBytesRemaining, false); + sampleBytesRead += writtenBytes; + sampleBytesWritten += writtenBytes; + sampleCurrentNalBytesRemaining -= writtenBytes; + } + } + } else { + if (MimeTypes.AUDIO_AC4.equals(track.track.format.sampleMimeType)) { + if (sampleBytesWritten == 0) { + Ac4Util.getAc4SampleHeader(sampleSize, scratch); + trackOutput.sampleData(scratch, Ac4Util.SAMPLE_HEADER_SIZE); + sampleBytesWritten += Ac4Util.SAMPLE_HEADER_SIZE; + } + sampleSize += Ac4Util.SAMPLE_HEADER_SIZE; + } + while (sampleBytesWritten < sampleSize) { + int writtenBytes = trackOutput.sampleData(input, sampleSize - sampleBytesWritten, false); + sampleBytesRead += writtenBytes; + sampleBytesWritten += writtenBytes; + sampleCurrentNalBytesRemaining -= writtenBytes; + } + } + trackOutput.sampleMetadata(track.sampleTable.timestampsUs[sampleIndex], + track.sampleTable.flags[sampleIndex], sampleSize, 0, null); + track.sampleIndex++; + sampleTrackIndex = C.INDEX_UNSET; + sampleBytesRead = 0; + sampleBytesWritten = 0; + sampleCurrentNalBytesRemaining = 0; + return RESULT_CONTINUE; + } + + /** + * Returns the index of the track that contains the next sample to be read, or {@link + * C#INDEX_UNSET} if no samples remain. + * + *

The preferred choice is the sample with the smallest offset not requiring a source reload, + * or if not available the sample with the smallest overall offset to avoid subsequent source + * reloads. + * + *

To deal with poor sample interleaving, we also check whether the required memory to catch up + * with the next logical sample (based on sample time) exceeds {@link + * #MAXIMUM_READ_AHEAD_BYTES_STREAM}. If this is the case, we continue with this sample even + * though it may require a source reload. + */ + private int getTrackIndexOfNextReadSample(long inputPosition) { + long preferredSkipAmount = Long.MAX_VALUE; + boolean preferredRequiresReload = true; + int preferredTrackIndex = C.INDEX_UNSET; + long preferredAccumulatedBytes = Long.MAX_VALUE; + long minAccumulatedBytes = Long.MAX_VALUE; + boolean minAccumulatedBytesRequiresReload = true; + int minAccumulatedBytesTrackIndex = C.INDEX_UNSET; + for (int trackIndex = 0; trackIndex < tracks.length; trackIndex++) { + Mp4Track track = tracks[trackIndex]; + int sampleIndex = track.sampleIndex; + if (sampleIndex == track.sampleTable.sampleCount) { + continue; + } + long sampleOffset = track.sampleTable.offsets[sampleIndex]; + long sampleAccumulatedBytes = accumulatedSampleSizes[trackIndex][sampleIndex]; + long skipAmount = sampleOffset - inputPosition; + boolean requiresReload = skipAmount < 0 || skipAmount >= RELOAD_MINIMUM_SEEK_DISTANCE; + if ((!requiresReload && preferredRequiresReload) + || (requiresReload == preferredRequiresReload && skipAmount < preferredSkipAmount)) { + preferredRequiresReload = requiresReload; + preferredSkipAmount = skipAmount; + preferredTrackIndex = trackIndex; + preferredAccumulatedBytes = sampleAccumulatedBytes; + } + if (sampleAccumulatedBytes < minAccumulatedBytes) { + minAccumulatedBytes = sampleAccumulatedBytes; + minAccumulatedBytesRequiresReload = requiresReload; + minAccumulatedBytesTrackIndex = trackIndex; + } + } + return minAccumulatedBytes == Long.MAX_VALUE + || !minAccumulatedBytesRequiresReload + || preferredAccumulatedBytes < minAccumulatedBytes + MAXIMUM_READ_AHEAD_BYTES_STREAM + ? preferredTrackIndex + : minAccumulatedBytesTrackIndex; + } + + /** + * Updates every track's sample index to point its latest sync sample before/at {@code timeUs}. + */ + private void updateSampleIndices(long timeUs) { + for (Mp4Track track : tracks) { + TrackSampleTable sampleTable = track.sampleTable; + int sampleIndex = sampleTable.getIndexOfEarlierOrEqualSynchronizationSample(timeUs); + if (sampleIndex == C.INDEX_UNSET) { + // Handle the case where the requested time is before the first synchronization sample. + sampleIndex = sampleTable.getIndexOfLaterOrEqualSynchronizationSample(timeUs); + } + track.sampleIndex = sampleIndex; + } + } + + /** + * Possibly skips the version and flags fields (1+3 byte) of a full meta atom of the {@code + * input}. + * + *

Atoms of type {@link Atom#TYPE_meta} are defined to be full atoms which have four additional + * bytes for a version and a flags field (see 4.2 'Object Structure' in ISO/IEC 14496-12:2005). + * QuickTime do not have such a full box structure. Since some of these files are encoded wrongly, + * we can't rely on the file type though. Instead we must check the 8 bytes after the common + * header bytes ourselves. + */ + private void maybeSkipRemainingMetaAtomHeaderBytes(ExtractorInput input) + throws IOException, InterruptedException { + scratch.reset(8); + // Peek the next 8 bytes which can be either + // (iso) [1 byte version + 3 bytes flags][4 byte size of next atom] + // (qt) [4 byte size of next atom ][4 byte hdlr atom type ] + // In case of (iso) we need to skip the next 4 bytes. + input.peekFully(scratch.data, 0, 8); + scratch.skipBytes(4); + if (scratch.readInt() == Atom.TYPE_hdlr) { + input.resetPeekPosition(); + } else { + input.skipFully(4); + } + } + + /** + * For each sample of each track, calculates accumulated size of all samples which need to be read + * before this sample can be used. + */ + private static long[][] calculateAccumulatedSampleSizes(Mp4Track[] tracks) { + long[][] accumulatedSampleSizes = new long[tracks.length][]; + int[] nextSampleIndex = new int[tracks.length]; + long[] nextSampleTimesUs = new long[tracks.length]; + boolean[] tracksFinished = new boolean[tracks.length]; + for (int i = 0; i < tracks.length; i++) { + accumulatedSampleSizes[i] = new long[tracks[i].sampleTable.sampleCount]; + nextSampleTimesUs[i] = tracks[i].sampleTable.timestampsUs[0]; + } + long accumulatedSampleSize = 0; + int finishedTracks = 0; + while (finishedTracks < tracks.length) { + long minTimeUs = Long.MAX_VALUE; + int minTimeTrackIndex = -1; + for (int i = 0; i < tracks.length; i++) { + if (!tracksFinished[i] && nextSampleTimesUs[i] <= minTimeUs) { + minTimeTrackIndex = i; + minTimeUs = nextSampleTimesUs[i]; + } + } + int trackSampleIndex = nextSampleIndex[minTimeTrackIndex]; + accumulatedSampleSizes[minTimeTrackIndex][trackSampleIndex] = accumulatedSampleSize; + accumulatedSampleSize += tracks[minTimeTrackIndex].sampleTable.sizes[trackSampleIndex]; + nextSampleIndex[minTimeTrackIndex] = ++trackSampleIndex; + if (trackSampleIndex < accumulatedSampleSizes[minTimeTrackIndex].length) { + nextSampleTimesUs[minTimeTrackIndex] = + tracks[minTimeTrackIndex].sampleTable.timestampsUs[trackSampleIndex]; + } else { + tracksFinished[minTimeTrackIndex] = true; + finishedTracks++; + } + } + return accumulatedSampleSizes; + } + + /** + * Adjusts a seek point offset to take into account the track with the given {@code sampleTable}, + * for a given {@code seekTimeUs}. + * + * @param sampleTable The sample table to use. + * @param seekTimeUs The seek time in microseconds. + * @param offset The current offset. + * @return The adjusted offset. + */ + private static long maybeAdjustSeekOffset( + TrackSampleTable sampleTable, long seekTimeUs, long offset) { + int sampleIndex = getSynchronizationSampleIndex(sampleTable, seekTimeUs); + if (sampleIndex == C.INDEX_UNSET) { + return offset; + } + long sampleOffset = sampleTable.offsets[sampleIndex]; + return Math.min(sampleOffset, offset); + } + + /** + * Returns the index of the synchronization sample before or at {@code timeUs}, or the index of + * the first synchronization sample if located after {@code timeUs}, or {@link C#INDEX_UNSET} if + * there are no synchronization samples in the table. + * + * @param sampleTable The sample table in which to locate a synchronization sample. + * @param timeUs A time in microseconds. + * @return The index of the synchronization sample before or at {@code timeUs}, or the index of + * the first synchronization sample if located after {@code timeUs}, or {@link C#INDEX_UNSET} + * if there are no synchronization samples in the table. + */ + private static int getSynchronizationSampleIndex(TrackSampleTable sampleTable, long timeUs) { + int sampleIndex = sampleTable.getIndexOfEarlierOrEqualSynchronizationSample(timeUs); + if (sampleIndex == C.INDEX_UNSET) { + // Handle the case where the requested time is before the first synchronization sample. + sampleIndex = sampleTable.getIndexOfLaterOrEqualSynchronizationSample(timeUs); + } + return sampleIndex; + } + + /** + * Process an ftyp atom to determine whether the media is QuickTime. + * + * @param atomData The ftyp atom data. + * @return Whether the media is QuickTime. + */ + private static boolean processFtypAtom(ParsableByteArray atomData) { + atomData.setPosition(Atom.HEADER_SIZE); + int majorBrand = atomData.readInt(); + if (majorBrand == BRAND_QUICKTIME) { + return true; + } + atomData.skipBytes(4); // minor_version + while (atomData.bytesLeft() > 0) { + if (atomData.readInt() == BRAND_QUICKTIME) { + return true; + } + } + return false; + } + + /** Returns whether the extractor should decode a leaf atom with type {@code atom}. */ + private static boolean shouldParseLeafAtom(int atom) { + return atom == Atom.TYPE_mdhd + || atom == Atom.TYPE_mvhd + || atom == Atom.TYPE_hdlr + || atom == Atom.TYPE_stsd + || atom == Atom.TYPE_stts + || atom == Atom.TYPE_stss + || atom == Atom.TYPE_ctts + || atom == Atom.TYPE_elst + || atom == Atom.TYPE_stsc + || atom == Atom.TYPE_stsz + || atom == Atom.TYPE_stz2 + || atom == Atom.TYPE_stco + || atom == Atom.TYPE_co64 + || atom == Atom.TYPE_tkhd + || atom == Atom.TYPE_ftyp + || atom == Atom.TYPE_udta + || atom == Atom.TYPE_keys + || atom == Atom.TYPE_ilst; + } + + /** Returns whether the extractor should decode a container atom with type {@code atom}. */ + private static boolean shouldParseContainerAtom(int atom) { + return atom == Atom.TYPE_moov + || atom == Atom.TYPE_trak + || atom == Atom.TYPE_mdia + || atom == Atom.TYPE_minf + || atom == Atom.TYPE_stbl + || atom == Atom.TYPE_edts + || atom == Atom.TYPE_meta; + } + + private static final class Mp4Track { + + public final Track track; + public final TrackSampleTable sampleTable; + public final TrackOutput trackOutput; + + public int sampleIndex; + + public Mp4Track(Track track, TrackSampleTable sampleTable, TrackOutput trackOutput) { + this.track = track; + this.sampleTable = sampleTable; + this.trackOutput = trackOutput; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/PsshAtomUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/PsshAtomUtil.java new file mode 100644 index 0000000000..ddb13aeb9c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/PsshAtomUtil.java @@ -0,0 +1,208 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.nio.ByteBuffer; +import java.util.UUID; + +/** + * Utility methods for handling PSSH atoms. + */ +public final class PsshAtomUtil { + + private static final String TAG = "PsshAtomUtil"; + + private PsshAtomUtil() {} + + /** + * Builds a version 0 PSSH atom for a given system id, containing the given data. + * + * @param systemId The system id of the scheme. + * @param data The scheme specific data. + * @return The PSSH atom. + */ + public static byte[] buildPsshAtom(UUID systemId, @Nullable byte[] data) { + return buildPsshAtom(systemId, null, data); + } + + /** + * Builds a PSSH atom for the given system id, containing the given key ids and data. + * + * @param systemId The system id of the scheme. + * @param keyIds The key ids for a version 1 PSSH atom, or null for a version 0 PSSH atom. + * @param data The scheme specific data. + * @return The PSSH atom. + */ + // dereference of possibly-null reference keyId + @SuppressWarnings({"ParameterNotNullable", "nullness:dereference.of.nullable"}) + public static byte[] buildPsshAtom( + UUID systemId, @Nullable UUID[] keyIds, @Nullable byte[] data) { + int dataLength = data != null ? data.length : 0; + int psshBoxLength = Atom.FULL_HEADER_SIZE + 16 /* SystemId */ + 4 /* DataSize */ + dataLength; + if (keyIds != null) { + psshBoxLength += 4 /* KID_count */ + (keyIds.length * 16) /* KIDs */; + } + ByteBuffer psshBox = ByteBuffer.allocate(psshBoxLength); + psshBox.putInt(psshBoxLength); + psshBox.putInt(Atom.TYPE_pssh); + psshBox.putInt(keyIds != null ? 0x01000000 : 0 /* version=(buildV1Atom ? 1 : 0), flags=0 */); + psshBox.putLong(systemId.getMostSignificantBits()); + psshBox.putLong(systemId.getLeastSignificantBits()); + if (keyIds != null) { + psshBox.putInt(keyIds.length); + for (UUID keyId : keyIds) { + psshBox.putLong(keyId.getMostSignificantBits()); + psshBox.putLong(keyId.getLeastSignificantBits()); + } + } + if (data != null && data.length != 0) { + psshBox.putInt(data.length); + psshBox.put(data); + } // Else the last 4 bytes are a 0 DataSize. + return psshBox.array(); + } + + /** + * Returns whether the data is a valid PSSH atom. + * + * @param data The data to parse. + * @return Whether the data is a valid PSSH atom. + */ + public static boolean isPsshAtom(byte[] data) { + return parsePsshAtom(data) != null; + } + + /** + * Parses the UUID from a PSSH atom. Version 0 and 1 PSSH atoms are supported. + * + *

The UUID is only parsed if the data is a valid PSSH atom. + * + * @param atom The atom to parse. + * @return The parsed UUID. Null if the input is not a valid PSSH atom, or if the PSSH atom has an + * unsupported version. + */ + public static @Nullable UUID parseUuid(byte[] atom) { + PsshAtom parsedAtom = parsePsshAtom(atom); + if (parsedAtom == null) { + return null; + } + return parsedAtom.uuid; + } + + /** + * Parses the version from a PSSH atom. Version 0 and 1 PSSH atoms are supported. + *

+ * The version is only parsed if the data is a valid PSSH atom. + * + * @param atom The atom to parse. + * @return The parsed version. -1 if the input is not a valid PSSH atom, or if the PSSH atom has + * an unsupported version. + */ + public static int parseVersion(byte[] atom) { + PsshAtom parsedAtom = parsePsshAtom(atom); + if (parsedAtom == null) { + return -1; + } + return parsedAtom.version; + } + + /** + * Parses the scheme specific data from a PSSH atom. Version 0 and 1 PSSH atoms are supported. + * + *

The scheme specific data is only parsed if the data is a valid PSSH atom matching the given + * UUID, or if the data is a valid PSSH atom of any type in the case that the passed UUID is null. + * + * @param atom The atom to parse. + * @param uuid The required UUID of the PSSH atom, or null to accept any UUID. + * @return The parsed scheme specific data. Null if the input is not a valid PSSH atom, or if the + * PSSH atom has an unsupported version, or if the PSSH atom does not match the passed UUID. + */ + public static @Nullable byte[] parseSchemeSpecificData(byte[] atom, UUID uuid) { + PsshAtom parsedAtom = parsePsshAtom(atom); + if (parsedAtom == null) { + return null; + } + if (uuid != null && !uuid.equals(parsedAtom.uuid)) { + Log.w(TAG, "UUID mismatch. Expected: " + uuid + ", got: " + parsedAtom.uuid + "."); + return null; + } + return parsedAtom.schemeData; + } + + /** + * Parses a PSSH atom. Version 0 and 1 PSSH atoms are supported. + * + * @param atom The atom to parse. + * @return The parsed PSSH atom. Null if the input is not a valid PSSH atom, or if the PSSH atom + * has an unsupported version. + */ + // TODO: Support parsing of the key ids for version 1 PSSH atoms. + private static @Nullable PsshAtom parsePsshAtom(byte[] atom) { + ParsableByteArray atomData = new ParsableByteArray(atom); + if (atomData.limit() < Atom.FULL_HEADER_SIZE + 16 /* UUID */ + 4 /* DataSize */) { + // Data too short. + return null; + } + atomData.setPosition(0); + int atomSize = atomData.readInt(); + if (atomSize != atomData.bytesLeft() + 4) { + // Not an atom, or incorrect atom size. + return null; + } + int atomType = atomData.readInt(); + if (atomType != Atom.TYPE_pssh) { + // Not an atom, or incorrect atom type. + return null; + } + int atomVersion = Atom.parseFullAtomVersion(atomData.readInt()); + if (atomVersion > 1) { + Log.w(TAG, "Unsupported pssh version: " + atomVersion); + return null; + } + UUID uuid = new UUID(atomData.readLong(), atomData.readLong()); + if (atomVersion == 1) { + int keyIdCount = atomData.readUnsignedIntToInt(); + atomData.skipBytes(16 * keyIdCount); + } + int dataSize = atomData.readUnsignedIntToInt(); + if (dataSize != atomData.bytesLeft()) { + // Incorrect dataSize. + return null; + } + byte[] data = new byte[dataSize]; + atomData.readBytes(data, 0, dataSize); + return new PsshAtom(uuid, atomVersion, data); + } + + // TODO: Consider exposing this and making parsePsshAtom public. + private static class PsshAtom { + + private final UUID uuid; + private final int version; + private final byte[] schemeData; + + public PsshAtom(UUID uuid, int version, byte[] schemeData) { + this.uuid = uuid; + this.version = version; + this.schemeData = schemeData; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Sniffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Sniffer.java new file mode 100644 index 0000000000..d58c2f06eb --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Sniffer.java @@ -0,0 +1,201 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; + +/** + * Provides methods that peek data from an {@link ExtractorInput} and return whether the input + * appears to be in MP4 format. + */ +/* package */ final class Sniffer { + + /** The maximum number of bytes to peek when sniffing. */ + private static final int SEARCH_LENGTH = 4 * 1024; + + private static final int[] COMPATIBLE_BRANDS = + new int[] { + 0x69736f6d, // isom + 0x69736f32, // iso2 + 0x69736f33, // iso3 + 0x69736f34, // iso4 + 0x69736f35, // iso5 + 0x69736f36, // iso6 + 0x61766331, // avc1 + 0x68766331, // hvc1 + 0x68657631, // hev1 + 0x61763031, // av01 + 0x6d703431, // mp41 + 0x6d703432, // mp42 + 0x33673261, // 3g2a + 0x33673262, // 3g2b + 0x33677236, // 3gr6 + 0x33677336, // 3gs6 + 0x33676536, // 3ge6 + 0x33676736, // 3gg6 + 0x4d345620, // M4V[space] + 0x4d344120, // M4A[space] + 0x66347620, // f4v[space] + 0x6b646469, // kddi + 0x4d345650, // M4VP + 0x71742020, // qt[space][space], Apple QuickTime + 0x4d534e56, // MSNV, Sony PSP + 0x64627931, // dby1, Dolby Vision + }; + + /** + * Returns whether data peeked from the current position in {@code input} is consistent with the + * input being a fragmented MP4 file. + * + * @param input The extractor input from which to peek data. The peek position will be modified. + * @return Whether the input appears to be in the fragmented MP4 format. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread has been interrupted. + */ + public static boolean sniffFragmented(ExtractorInput input) + throws IOException, InterruptedException { + return sniffInternal(input, true); + } + + /** + * Returns whether data peeked from the current position in {@code input} is consistent with the + * input being an unfragmented MP4 file. + * + * @param input The extractor input from which to peek data. The peek position will be modified. + * @return Whether the input appears to be in the unfragmented MP4 format. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread has been interrupted. + */ + public static boolean sniffUnfragmented(ExtractorInput input) + throws IOException, InterruptedException { + return sniffInternal(input, false); + } + + private static boolean sniffInternal(ExtractorInput input, boolean fragmented) + throws IOException, InterruptedException { + long inputLength = input.getLength(); + int bytesToSearch = (int) (inputLength == C.LENGTH_UNSET || inputLength > SEARCH_LENGTH + ? SEARCH_LENGTH : inputLength); + + ParsableByteArray buffer = new ParsableByteArray(64); + int bytesSearched = 0; + boolean foundGoodFileType = false; + boolean isFragmented = false; + while (bytesSearched < bytesToSearch) { + // Read an atom header. + int headerSize = Atom.HEADER_SIZE; + buffer.reset(headerSize); + input.peekFully(buffer.data, 0, headerSize); + long atomSize = buffer.readUnsignedInt(); + int atomType = buffer.readInt(); + if (atomSize == Atom.DEFINES_LARGE_SIZE) { + // Read the large atom size. + headerSize = Atom.LONG_HEADER_SIZE; + input.peekFully(buffer.data, Atom.HEADER_SIZE, Atom.LONG_HEADER_SIZE - Atom.HEADER_SIZE); + buffer.setLimit(Atom.LONG_HEADER_SIZE); + atomSize = buffer.readLong(); + } else if (atomSize == Atom.EXTENDS_TO_END_SIZE) { + // The atom extends to the end of the file. + long fileEndPosition = input.getLength(); + if (fileEndPosition != C.LENGTH_UNSET) { + atomSize = fileEndPosition - input.getPeekPosition() + headerSize; + } + } + + if (atomSize < headerSize) { + // The file is invalid because the atom size is too small for its header. + return false; + } + bytesSearched += headerSize; + + if (atomType == Atom.TYPE_moov) { + // We have seen the moov atom. We increase the search size to make sure we don't miss an + // mvex atom because the moov's size exceeds the search length. + bytesToSearch += (int) atomSize; + if (inputLength != C.LENGTH_UNSET && bytesToSearch > inputLength) { + // Make sure we don't exceed the file size. + bytesToSearch = (int) inputLength; + } + // Check for an mvex atom inside the moov atom to identify whether the file is fragmented. + continue; + } + + if (atomType == Atom.TYPE_moof || atomType == Atom.TYPE_mvex) { + // The movie is fragmented. Stop searching as we must have read any ftyp atom already. + isFragmented = true; + break; + } + + if (bytesSearched + atomSize - headerSize >= bytesToSearch) { + // Stop searching as peeking this atom would exceed the search limit. + break; + } + + int atomDataSize = (int) (atomSize - headerSize); + bytesSearched += atomDataSize; + if (atomType == Atom.TYPE_ftyp) { + // Parse the atom and check the file type/brand is compatible with the extractors. + if (atomDataSize < 8) { + return false; + } + buffer.reset(atomDataSize); + input.peekFully(buffer.data, 0, atomDataSize); + int brandsCount = atomDataSize / 4; + for (int i = 0; i < brandsCount; i++) { + if (i == 1) { + // This index refers to the minorVersion, not a brand, so skip it. + buffer.skipBytes(4); + } else if (isCompatibleBrand(buffer.readInt())) { + foundGoodFileType = true; + break; + } + } + if (!foundGoodFileType) { + // The types were not compatible and there is only one ftyp atom, so reject the file. + return false; + } + } else if (atomDataSize != 0) { + // Skip the atom. + input.advancePeekPosition(atomDataSize); + } + } + return foundGoodFileType && fragmented == isFragmented; + } + + /** + * Returns whether {@code brand} is an ftyp atom brand that is compatible with the MP4 extractors. + */ + private static boolean isCompatibleBrand(int brand) { + // Accept all brands starting '3gp'. + if (brand >>> 8 == 0x00336770) { + return true; + } + for (int compatibleBrand : COMPATIBLE_BRANDS) { + if (compatibleBrand == brand) { + return true; + } + } + return false; + } + + private Sniffer() { + // Prevent instantiation. + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Track.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Track.java new file mode 100644 index 0000000000..b7a1555a76 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/Track.java @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Encapsulates information describing an MP4 track. + */ +public final class Track { + + /** + * The transformation to apply to samples in the track, if any. One of {@link + * #TRANSFORMATION_NONE} or {@link #TRANSFORMATION_CEA608_CDAT}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({TRANSFORMATION_NONE, TRANSFORMATION_CEA608_CDAT}) + public @interface Transformation {} + /** + * A no-op sample transformation. + */ + public static final int TRANSFORMATION_NONE = 0; + /** + * A transformation for caption samples in cdat atoms. + */ + public static final int TRANSFORMATION_CEA608_CDAT = 1; + + /** + * The track identifier. + */ + public final int id; + + /** + * One of {@link C#TRACK_TYPE_AUDIO}, {@link C#TRACK_TYPE_VIDEO} and {@link C#TRACK_TYPE_TEXT}. + */ + public final int type; + + /** + * The track timescale, defined as the number of time units that pass in one second. + */ + public final long timescale; + + /** + * The movie timescale. + */ + public final long movieTimescale; + + /** + * The duration of the track in microseconds, or {@link C#TIME_UNSET} if unknown. + */ + public final long durationUs; + + /** + * The format. + */ + public final Format format; + + /** + * One of {@code TRANSFORMATION_*}. Defines the transformation to apply before outputting each + * sample. + */ + @Transformation public final int sampleTransformation; + + /** + * Durations of edit list segments in the movie timescale. Null if there is no edit list. + */ + @Nullable public final long[] editListDurations; + + /** + * Media times for edit list segments in the track timescale. Null if there is no edit list. + */ + @Nullable public final long[] editListMediaTimes; + + /** + * For H264 video tracks, the length in bytes of the NALUnitLength field in each sample. 0 for + * other track types. + */ + public final int nalUnitLengthFieldLength; + + @Nullable private final TrackEncryptionBox[] sampleDescriptionEncryptionBoxes; + + public Track(int id, int type, long timescale, long movieTimescale, long durationUs, + Format format, @Transformation int sampleTransformation, + @Nullable TrackEncryptionBox[] sampleDescriptionEncryptionBoxes, int nalUnitLengthFieldLength, + @Nullable long[] editListDurations, @Nullable long[] editListMediaTimes) { + this.id = id; + this.type = type; + this.timescale = timescale; + this.movieTimescale = movieTimescale; + this.durationUs = durationUs; + this.format = format; + this.sampleTransformation = sampleTransformation; + this.sampleDescriptionEncryptionBoxes = sampleDescriptionEncryptionBoxes; + this.nalUnitLengthFieldLength = nalUnitLengthFieldLength; + this.editListDurations = editListDurations; + this.editListMediaTimes = editListMediaTimes; + } + + /** + * Returns the {@link TrackEncryptionBox} for the given sample description index. + * + * @param sampleDescriptionIndex The given sample description index + * @return The {@link TrackEncryptionBox} for the given sample description index. Maybe null if no + * such entry exists. + */ + @Nullable + public TrackEncryptionBox getSampleDescriptionEncryptionBox(int sampleDescriptionIndex) { + return sampleDescriptionEncryptionBoxes == null ? null + : sampleDescriptionEncryptionBoxes[sampleDescriptionIndex]; + } + + // incompatible types in argument. + @SuppressWarnings("nullness:argument.type.incompatible") + public Track copyWithFormat(Format format) { + return new Track( + id, + type, + timescale, + movieTimescale, + durationUs, + format, + sampleTransformation, + sampleDescriptionEncryptionBoxes, + nalUnitLengthFieldLength, + editListDurations, + editListMediaTimes); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/TrackEncryptionBox.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/TrackEncryptionBox.java new file mode 100644 index 0000000000..04bfb82210 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/TrackEncryptionBox.java @@ -0,0 +1,103 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; + +/** + * Encapsulates information parsed from a track encryption (tenc) box or sample group description + * (sgpd) box in an MP4 stream. + */ +public final class TrackEncryptionBox { + + private static final String TAG = "TrackEncryptionBox"; + + /** + * Indicates the encryption state of the samples in the sample group. + */ + public final boolean isEncrypted; + + /** + * The protection scheme type, as defined by the 'schm' box, or null if unknown. + */ + @Nullable public final String schemeType; + + /** + * A {@link TrackOutput.CryptoData} instance containing the encryption information from this + * {@link TrackEncryptionBox}. + */ + public final TrackOutput.CryptoData cryptoData; + + /** The initialization vector size in bytes for the samples in the corresponding sample group. */ + public final int perSampleIvSize; + + /** + * If {@link #perSampleIvSize} is 0, holds the default initialization vector as defined in the + * track encryption box or sample group description box. Null otherwise. + */ + @Nullable public final byte[] defaultInitializationVector; + + /** + * @param isEncrypted See {@link #isEncrypted}. + * @param schemeType See {@link #schemeType}. + * @param perSampleIvSize See {@link #perSampleIvSize}. + * @param keyId See {@link TrackOutput.CryptoData#encryptionKey}. + * @param defaultEncryptedBlocks See {@link TrackOutput.CryptoData#encryptedBlocks}. + * @param defaultClearBlocks See {@link TrackOutput.CryptoData#clearBlocks}. + * @param defaultInitializationVector See {@link #defaultInitializationVector}. + */ + public TrackEncryptionBox( + boolean isEncrypted, + @Nullable String schemeType, + int perSampleIvSize, + byte[] keyId, + int defaultEncryptedBlocks, + int defaultClearBlocks, + @Nullable byte[] defaultInitializationVector) { + Assertions.checkArgument(perSampleIvSize == 0 ^ defaultInitializationVector == null); + this.isEncrypted = isEncrypted; + this.schemeType = schemeType; + this.perSampleIvSize = perSampleIvSize; + this.defaultInitializationVector = defaultInitializationVector; + cryptoData = new TrackOutput.CryptoData(schemeToCryptoMode(schemeType), keyId, + defaultEncryptedBlocks, defaultClearBlocks); + } + + @C.CryptoMode + private static int schemeToCryptoMode(@Nullable String schemeType) { + if (schemeType == null) { + // If unknown, assume cenc. + return C.CRYPTO_MODE_AES_CTR; + } + switch (schemeType) { + case C.CENC_TYPE_cenc: + case C.CENC_TYPE_cens: + return C.CRYPTO_MODE_AES_CTR; + case C.CENC_TYPE_cbc1: + case C.CENC_TYPE_cbcs: + return C.CRYPTO_MODE_AES_CBC; + default: + Log.w(TAG, "Unsupported protection scheme type '" + schemeType + "'. Assuming AES-CTR " + + "crypto mode."); + return C.CRYPTO_MODE_AES_CTR; + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/TrackFragment.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/TrackFragment.java new file mode 100644 index 0000000000..e027d6ed76 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/TrackFragment.java @@ -0,0 +1,197 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; + +/** + * A holder for information corresponding to a single fragment of an mp4 file. + */ +/* package */ final class TrackFragment { + + /** + * The default values for samples from the track fragment header. + */ + public DefaultSampleValues header; + /** + * The position (byte offset) of the start of fragment. + */ + public long atomPosition; + /** + * The position (byte offset) of the start of data contained in the fragment. + */ + public long dataPosition; + /** + * The position (byte offset) of the start of auxiliary data. + */ + public long auxiliaryDataPosition; + /** + * The number of track runs of the fragment. + */ + public int trunCount; + /** + * The total number of samples in the fragment. + */ + public int sampleCount; + /** + * The position (byte offset) of the start of sample data of each track run in the fragment. + */ + public long[] trunDataPosition; + /** + * The number of samples contained by each track run in the fragment. + */ + public int[] trunLength; + /** + * The size of each sample in the fragment. + */ + public int[] sampleSizeTable; + /** + * The composition time offset of each sample in the fragment. + */ + public int[] sampleCompositionTimeOffsetTable; + /** + * The decoding time of each sample in the fragment. + */ + public long[] sampleDecodingTimeTable; + /** + * Indicates which samples are sync frames. + */ + public boolean[] sampleIsSyncFrameTable; + /** + * Whether the fragment defines encryption data. + */ + public boolean definesEncryptionData; + /** + * If {@link #definesEncryptionData} is true, indicates which samples use sub-sample encryption. + * Undefined otherwise. + */ + public boolean[] sampleHasSubsampleEncryptionTable; + /** + * Fragment specific track encryption. May be null. + */ + public TrackEncryptionBox trackEncryptionBox; + /** + * If {@link #definesEncryptionData} is true, indicates the length of the sample encryption data. + * Undefined otherwise. + */ + public int sampleEncryptionDataLength; + /** + * If {@link #definesEncryptionData} is true, contains binary sample encryption data. Undefined + * otherwise. + */ + public ParsableByteArray sampleEncryptionData; + /** + * Whether {@link #sampleEncryptionData} needs populating with the actual encryption data. + */ + public boolean sampleEncryptionDataNeedsFill; + /** + * The absolute decode time of the start of the next fragment. + */ + public long nextFragmentDecodeTime; + + /** + * Resets the fragment. + *

+ * {@link #sampleCount} and {@link #nextFragmentDecodeTime} are set to 0, and both + * {@link #definesEncryptionData} and {@link #sampleEncryptionDataNeedsFill} is set to false, + * and {@link #trackEncryptionBox} is set to null. + */ + public void reset() { + trunCount = 0; + nextFragmentDecodeTime = 0; + definesEncryptionData = false; + sampleEncryptionDataNeedsFill = false; + trackEncryptionBox = null; + } + + /** + * Configures the fragment for the specified number of samples. + *

+ * The {@link #sampleCount} of the fragment is set to the specified sample count, and the + * contained tables are resized if necessary such that they are at least this length. + * + * @param sampleCount The number of samples in the new run. + */ + public void initTables(int trunCount, int sampleCount) { + this.trunCount = trunCount; + this.sampleCount = sampleCount; + if (trunLength == null || trunLength.length < trunCount) { + trunDataPosition = new long[trunCount]; + trunLength = new int[trunCount]; + } + if (sampleSizeTable == null || sampleSizeTable.length < sampleCount) { + // Size the tables 25% larger than needed, so as to make future resize operations less + // likely. The choice of 25% is relatively arbitrary. + int tableSize = (sampleCount * 125) / 100; + sampleSizeTable = new int[tableSize]; + sampleCompositionTimeOffsetTable = new int[tableSize]; + sampleDecodingTimeTable = new long[tableSize]; + sampleIsSyncFrameTable = new boolean[tableSize]; + sampleHasSubsampleEncryptionTable = new boolean[tableSize]; + } + } + + /** + * Configures the fragment to be one that defines encryption data of the specified length. + *

+ * {@link #definesEncryptionData} is set to true, {@link #sampleEncryptionDataLength} is set to + * the specified length, and {@link #sampleEncryptionData} is resized if necessary such that it + * is at least this length. + * + * @param length The length in bytes of the encryption data. + */ + public void initEncryptionData(int length) { + if (sampleEncryptionData == null || sampleEncryptionData.limit() < length) { + sampleEncryptionData = new ParsableByteArray(length); + } + sampleEncryptionDataLength = length; + definesEncryptionData = true; + sampleEncryptionDataNeedsFill = true; + } + + /** + * Fills {@link #sampleEncryptionData} from the provided input. + * + * @param input An {@link ExtractorInput} from which to read the encryption data. + */ + public void fillEncryptionData(ExtractorInput input) throws IOException, InterruptedException { + input.readFully(sampleEncryptionData.data, 0, sampleEncryptionDataLength); + sampleEncryptionData.setPosition(0); + sampleEncryptionDataNeedsFill = false; + } + + /** + * Fills {@link #sampleEncryptionData} from the provided source. + * + * @param source A source from which to read the encryption data. + */ + public void fillEncryptionData(ParsableByteArray source) { + source.readBytes(sampleEncryptionData.data, 0, sampleEncryptionDataLength); + sampleEncryptionData.setPosition(0); + sampleEncryptionDataNeedsFill = false; + } + + public long getSamplePresentationTime(int index) { + return sampleDecodingTimeTable[index] + sampleCompositionTimeOffsetTable[index]; + } + + /** Returns whether the sample at the given index has a subsample encryption table. */ + public boolean sampleHasSubsampleEncryptionTable(int index) { + return definesEncryptionData && sampleHasSubsampleEncryptionTable[index]; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/TrackSampleTable.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/TrackSampleTable.java new file mode 100644 index 0000000000..bb9891b302 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/mp4/TrackSampleTable.java @@ -0,0 +1,108 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Sample table for a track in an MP4 file. + */ +/* package */ final class TrackSampleTable { + + /** The track corresponding to this sample table. */ + public final Track track; + /** Number of samples. */ + public final int sampleCount; + /** Sample offsets in bytes. */ + public final long[] offsets; + /** Sample sizes in bytes. */ + public final int[] sizes; + /** Maximum sample size in {@link #sizes}. */ + public final int maximumSize; + /** Sample timestamps in microseconds. */ + public final long[] timestampsUs; + /** Sample flags. */ + public final int[] flags; + /** + * The duration of the track sample table in microseconds, or {@link C#TIME_UNSET} if the sample + * table is empty. + */ + public final long durationUs; + + public TrackSampleTable( + Track track, + long[] offsets, + int[] sizes, + int maximumSize, + long[] timestampsUs, + int[] flags, + long durationUs) { + Assertions.checkArgument(sizes.length == timestampsUs.length); + Assertions.checkArgument(offsets.length == timestampsUs.length); + Assertions.checkArgument(flags.length == timestampsUs.length); + + this.track = track; + this.offsets = offsets; + this.sizes = sizes; + this.maximumSize = maximumSize; + this.timestampsUs = timestampsUs; + this.flags = flags; + this.durationUs = durationUs; + sampleCount = offsets.length; + if (flags.length > 0) { + flags[flags.length - 1] |= C.BUFFER_FLAG_LAST_SAMPLE; + } + } + + /** + * Returns the sample index of the closest synchronization sample at or before the given + * timestamp, if one is available. + * + * @param timeUs Timestamp adjacent to which to find a synchronization sample. + * @return Index of the synchronization sample, or {@link C#INDEX_UNSET} if none. + */ + public int getIndexOfEarlierOrEqualSynchronizationSample(long timeUs) { + // Video frame timestamps may not be sorted, so the behavior of this call can be undefined. + // Frames are not reordered past synchronization samples so this works in practice. + int startIndex = Util.binarySearchFloor(timestampsUs, timeUs, true, false); + for (int i = startIndex; i >= 0; i--) { + if ((flags[i] & C.BUFFER_FLAG_KEY_FRAME) != 0) { + return i; + } + } + return C.INDEX_UNSET; + } + + /** + * Returns the sample index of the closest synchronization sample at or after the given timestamp, + * if one is available. + * + * @param timeUs Timestamp adjacent to which to find a synchronization sample. + * @return index Index of the synchronization sample, or {@link C#INDEX_UNSET} if none. + */ + public int getIndexOfLaterOrEqualSynchronizationSample(long timeUs) { + int startIndex = Util.binarySearchCeil(timestampsUs, timeUs, true, false); + for (int i = startIndex; i < timestampsUs.length; i++) { + if ((flags[i] & C.BUFFER_FLAG_KEY_FRAME) != 0) { + return i; + } + } + return C.INDEX_UNSET; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/DefaultOggSeeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/DefaultOggSeeker.java new file mode 100644 index 0000000000..5d3b27e294 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/DefaultOggSeeker.java @@ -0,0 +1,313 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ogg; + +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekPoint; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.EOFException; +import java.io.IOException; + +/** Seeks in an Ogg stream. */ +/* package */ final class DefaultOggSeeker implements OggSeeker { + + private static final int MATCH_RANGE = 72000; + private static final int MATCH_BYTE_RANGE = 100000; + private static final int DEFAULT_OFFSET = 30000; + + private static final int STATE_SEEK_TO_END = 0; + private static final int STATE_READ_LAST_PAGE = 1; + private static final int STATE_SEEK = 2; + private static final int STATE_SKIP = 3; + private static final int STATE_IDLE = 4; + + private final OggPageHeader pageHeader = new OggPageHeader(); + private final long payloadStartPosition; + private final long payloadEndPosition; + private final StreamReader streamReader; + + private int state; + private long totalGranules; + private long positionBeforeSeekToEnd; + private long targetGranule; + + private long start; + private long end; + private long startGranule; + private long endGranule; + + /** + * Constructs an OggSeeker. + * + * @param streamReader The {@link StreamReader} that owns this seeker. + * @param payloadStartPosition Start position of the payload (inclusive). + * @param payloadEndPosition End position of the payload (exclusive). + * @param firstPayloadPageSize The total size of the first payload page, in bytes. + * @param firstPayloadPageGranulePosition The granule position of the first payload page. + * @param firstPayloadPageIsLastPage Whether the first payload page is also the last page. + */ + public DefaultOggSeeker( + StreamReader streamReader, + long payloadStartPosition, + long payloadEndPosition, + long firstPayloadPageSize, + long firstPayloadPageGranulePosition, + boolean firstPayloadPageIsLastPage) { + Assertions.checkArgument( + payloadStartPosition >= 0 && payloadEndPosition > payloadStartPosition); + this.streamReader = streamReader; + this.payloadStartPosition = payloadStartPosition; + this.payloadEndPosition = payloadEndPosition; + if (firstPayloadPageSize == payloadEndPosition - payloadStartPosition + || firstPayloadPageIsLastPage) { + totalGranules = firstPayloadPageGranulePosition; + state = STATE_IDLE; + } else { + state = STATE_SEEK_TO_END; + } + } + + @Override + @SuppressWarnings("fallthrough") + public long read(ExtractorInput input) throws IOException, InterruptedException { + switch (state) { + case STATE_IDLE: + return -1; + case STATE_SEEK_TO_END: + positionBeforeSeekToEnd = input.getPosition(); + state = STATE_READ_LAST_PAGE; + // Seek to the end just before the last page of stream to get the duration. + long lastPageSearchPosition = payloadEndPosition - OggPageHeader.MAX_PAGE_SIZE; + if (lastPageSearchPosition > positionBeforeSeekToEnd) { + return lastPageSearchPosition; + } + // Fall through. + case STATE_READ_LAST_PAGE: + totalGranules = readGranuleOfLastPage(input); + state = STATE_IDLE; + return positionBeforeSeekToEnd; + case STATE_SEEK: + long position = getNextSeekPosition(input); + if (position != C.POSITION_UNSET) { + return position; + } + state = STATE_SKIP; + // Fall through. + case STATE_SKIP: + skipToPageOfTargetGranule(input); + state = STATE_IDLE; + return -(startGranule + 2); + default: + // Never happens. + throw new IllegalStateException(); + } + } + + @Override + public OggSeekMap createSeekMap() { + return totalGranules != 0 ? new OggSeekMap() : null; + } + + @Override + public void startSeek(long targetGranule) { + this.targetGranule = Util.constrainValue(targetGranule, 0, totalGranules - 1); + state = STATE_SEEK; + start = payloadStartPosition; + end = payloadEndPosition; + startGranule = 0; + endGranule = totalGranules; + } + + /** + * Performs a single step of a seeking binary search, returning the byte position from which data + * should be provided for the next step, or {@link C#POSITION_UNSET} if the search has converged. + * If the search has converged then {@link #skipToPageOfTargetGranule(ExtractorInput)} should be + * called to skip to the target page. + * + * @param input The {@link ExtractorInput} to read from. + * @return The byte position from which data should be provided for the next step, or {@link + * C#POSITION_UNSET} if the search has converged. + * @throws IOException If reading from the input fails. + * @throws InterruptedException If interrupted while reading from the input. + */ + private long getNextSeekPosition(ExtractorInput input) throws IOException, InterruptedException { + if (start == end) { + return C.POSITION_UNSET; + } + + long currentPosition = input.getPosition(); + if (!skipToNextPage(input, end)) { + if (start == currentPosition) { + throw new IOException("No ogg page can be found."); + } + return start; + } + + pageHeader.populate(input, /* quiet= */ false); + input.resetPeekPosition(); + + long granuleDistance = targetGranule - pageHeader.granulePosition; + int pageSize = pageHeader.headerSize + pageHeader.bodySize; + if (0 <= granuleDistance && granuleDistance < MATCH_RANGE) { + return C.POSITION_UNSET; + } + + if (granuleDistance < 0) { + end = currentPosition; + endGranule = pageHeader.granulePosition; + } else { + start = input.getPosition() + pageSize; + startGranule = pageHeader.granulePosition; + } + + if (end - start < MATCH_BYTE_RANGE) { + end = start; + return start; + } + + long offset = pageSize * (granuleDistance <= 0 ? 2L : 1L); + long nextPosition = + input.getPosition() + - offset + + (granuleDistance * (end - start) / (endGranule - startGranule)); + return Util.constrainValue(nextPosition, start, end - 1); + } + + /** + * Skips forward to the start of the page containing the {@code targetGranule}. + * + * @param input The {@link ExtractorInput} to read from. + * @throws ParserException If populating the page header fails. + * @throws IOException If reading from the input fails. + * @throws InterruptedException If interrupted while reading from the input. + */ + private void skipToPageOfTargetGranule(ExtractorInput input) + throws IOException, InterruptedException { + pageHeader.populate(input, /* quiet= */ false); + while (pageHeader.granulePosition <= targetGranule) { + input.skipFully(pageHeader.headerSize + pageHeader.bodySize); + start = input.getPosition(); + startGranule = pageHeader.granulePosition; + pageHeader.populate(input, /* quiet= */ false); + } + input.resetPeekPosition(); + } + + /** + * Skips to the next page. + * + * @param input The {@code ExtractorInput} to skip to the next page. + * @throws IOException If peeking/reading from the input fails. + * @throws InterruptedException If the thread is interrupted. + * @throws EOFException If the next page can't be found before the end of the input. + */ + @VisibleForTesting + void skipToNextPage(ExtractorInput input) throws IOException, InterruptedException { + if (!skipToNextPage(input, payloadEndPosition)) { + // Not found until eof. + throw new EOFException(); + } + } + + /** + * Skips to the next page. Searches for the next page header. + * + * @param input The {@code ExtractorInput} to skip to the next page. + * @param limit The limit up to which the search should take place. + * @return Whether the next page was found. + * @throws IOException If peeking/reading from the input fails. + * @throws InterruptedException If interrupted while peeking/reading from the input. + */ + private boolean skipToNextPage(ExtractorInput input, long limit) + throws IOException, InterruptedException { + limit = Math.min(limit + 3, payloadEndPosition); + byte[] buffer = new byte[2048]; + int peekLength = buffer.length; + while (true) { + if (input.getPosition() + peekLength > limit) { + // Make sure to not peek beyond the end of the input. + peekLength = (int) (limit - input.getPosition()); + if (peekLength < 4) { + // Not found until end. + return false; + } + } + input.peekFully(buffer, 0, peekLength, false); + for (int i = 0; i < peekLength - 3; i++) { + if (buffer[i] == 'O' + && buffer[i + 1] == 'g' + && buffer[i + 2] == 'g' + && buffer[i + 3] == 'S') { + // Match! Skip to the start of the pattern. + input.skipFully(i); + return true; + } + } + // Overlap by not skipping the entire peekLength. + input.skipFully(peekLength - 3); + } + } + + /** + * Skips to the last Ogg page in the stream and reads the header's granule field which is the + * total number of samples per channel. + * + * @param input The {@link ExtractorInput} to read from. + * @return The total number of samples of this input. + * @throws IOException If reading from the input fails. + * @throws InterruptedException If the thread is interrupted. + */ + @VisibleForTesting + long readGranuleOfLastPage(ExtractorInput input) throws IOException, InterruptedException { + skipToNextPage(input); + pageHeader.reset(); + while ((pageHeader.type & 0x04) != 0x04 && input.getPosition() < payloadEndPosition) { + pageHeader.populate(input, /* quiet= */ false); + input.skipFully(pageHeader.headerSize + pageHeader.bodySize); + } + return pageHeader.granulePosition; + } + + private final class OggSeekMap implements SeekMap { + + @Override + public boolean isSeekable() { + return true; + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + long targetGranule = streamReader.convertTimeToGranule(timeUs); + long estimatedPosition = + payloadStartPosition + + (targetGranule * (payloadEndPosition - payloadStartPosition) / totalGranules) + - DEFAULT_OFFSET; + estimatedPosition = + Util.constrainValue(estimatedPosition, payloadStartPosition, payloadEndPosition - 1); + return new SeekPoints(new SeekPoint(timeUs, estimatedPosition)); + } + + @Override + public long getDurationUs() { + return streamReader.convertGranuleToTime(totalGranules); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/FlacReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/FlacReader.java new file mode 100644 index 0000000000..449bf35f78 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/FlacReader.java @@ -0,0 +1,143 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ogg; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.FlacFrameReader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.FlacMetadataReader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.FlacSeekTableSeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacConstants; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.FlacStreamMetadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.Arrays; + +/** + * {@link StreamReader} to extract Flac data out of Ogg byte stream. + */ +/* package */ final class FlacReader extends StreamReader { + + private static final byte AUDIO_PACKET_TYPE = (byte) 0xFF; + + private static final int FRAME_HEADER_SAMPLE_NUMBER_OFFSET = 4; + + private FlacStreamMetadata streamMetadata; + private FlacOggSeeker flacOggSeeker; + + public static boolean verifyBitstreamType(ParsableByteArray data) { + return data.bytesLeft() >= 5 && data.readUnsignedByte() == 0x7F && // packet type + data.readUnsignedInt() == 0x464C4143; // ASCII signature "FLAC" + } + + @Override + protected void reset(boolean headerData) { + super.reset(headerData); + if (headerData) { + streamMetadata = null; + flacOggSeeker = null; + } + } + + private static boolean isAudioPacket(byte[] data) { + return data[0] == AUDIO_PACKET_TYPE; + } + + @Override + protected long preparePayload(ParsableByteArray packet) { + if (!isAudioPacket(packet.data)) { + return -1; + } + return getFlacFrameBlockSize(packet); + } + + @Override + protected boolean readHeaders(ParsableByteArray packet, long position, SetupData setupData) { + byte[] data = packet.data; + if (streamMetadata == null) { + streamMetadata = new FlacStreamMetadata(data, 17); + byte[] metadata = Arrays.copyOfRange(data, 9, packet.limit()); + setupData.format = streamMetadata.getFormat(metadata, /* id3Metadata= */ null); + } else if ((data[0] & 0x7F) == FlacConstants.METADATA_TYPE_SEEK_TABLE) { + flacOggSeeker = new FlacOggSeeker(); + FlacStreamMetadata.SeekTable seekTable = + FlacMetadataReader.readSeekTableMetadataBlock(packet); + streamMetadata = streamMetadata.copyWithSeekTable(seekTable); + } else if (isAudioPacket(data)) { + if (flacOggSeeker != null) { + flacOggSeeker.setFirstFrameOffset(position); + setupData.oggSeeker = flacOggSeeker; + } + return false; + } + return true; + } + + private int getFlacFrameBlockSize(ParsableByteArray packet) { + int blockSizeKey = (packet.data[2] & 0xFF) >> 4; + if (blockSizeKey == 6 || blockSizeKey == 7) { + // Skip the sample number. + packet.skipBytes(FRAME_HEADER_SAMPLE_NUMBER_OFFSET); + packet.readUtf8EncodedLong(); + } + int result = FlacFrameReader.readFrameBlockSizeSamplesFromKey(packet, blockSizeKey); + packet.setPosition(0); + return result; + } + + private class FlacOggSeeker implements OggSeeker { + + private long firstFrameOffset; + private long pendingSeekGranule; + + public FlacOggSeeker() { + firstFrameOffset = -1; + pendingSeekGranule = -1; + } + + public void setFirstFrameOffset(long firstFrameOffset) { + this.firstFrameOffset = firstFrameOffset; + } + + @Override + public long read(ExtractorInput input) throws IOException, InterruptedException { + if (pendingSeekGranule >= 0) { + long result = -(pendingSeekGranule + 2); + pendingSeekGranule = -1; + return result; + } + return -1; + } + + @Override + public void startSeek(long targetGranule) { + Assertions.checkNotNull(streamMetadata.seekTable); + long[] seekPointGranules = streamMetadata.seekTable.pointSampleNumbers; + int index = Util.binarySearchFloor(seekPointGranules, targetGranule, true, true); + pendingSeekGranule = seekPointGranules[index]; + } + + @Override + public SeekMap createSeekMap() { + Assertions.checkState(firstFrameOffset != -1); + return new FlacSeekTableSeekMap(streamMetadata, firstFrameOffset); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggExtractor.java new file mode 100644 index 0000000000..da53a47dc0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggExtractor.java @@ -0,0 +1,114 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ogg; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; + +/** + * Extracts data from the Ogg container format. + */ +public class OggExtractor implements Extractor { + + /** Factory for {@link OggExtractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new OggExtractor()}; + + private static final int MAX_VERIFICATION_BYTES = 8; + + private ExtractorOutput output; + private StreamReader streamReader; + private boolean streamReaderInitialized; + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + try { + return sniffInternal(input); + } catch (ParserException e) { + return false; + } + } + + @Override + public void init(ExtractorOutput output) { + this.output = output; + } + + @Override + public void seek(long position, long timeUs) { + if (streamReader != null) { + streamReader.seek(position, timeUs); + } + } + + @Override + public void release() { + // Do nothing + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + if (streamReader == null) { + if (!sniffInternal(input)) { + throw new ParserException("Failed to determine bitstream type"); + } + input.resetPeekPosition(); + } + if (!streamReaderInitialized) { + TrackOutput trackOutput = output.track(0, C.TRACK_TYPE_AUDIO); + output.endTracks(); + streamReader.init(output, trackOutput); + streamReaderInitialized = true; + } + return streamReader.read(input, seekPosition); + } + + private boolean sniffInternal(ExtractorInput input) throws IOException, InterruptedException { + OggPageHeader header = new OggPageHeader(); + if (!header.populate(input, true) || (header.type & 0x02) != 0x02) { + return false; + } + + int length = Math.min(header.bodySize, MAX_VERIFICATION_BYTES); + ParsableByteArray scratch = new ParsableByteArray(length); + input.peekFully(scratch.data, 0, length); + + if (FlacReader.verifyBitstreamType(resetPosition(scratch))) { + streamReader = new FlacReader(); + } else if (VorbisReader.verifyBitstreamType(resetPosition(scratch))) { + streamReader = new VorbisReader(); + } else if (OpusReader.verifyBitstreamType(resetPosition(scratch))) { + streamReader = new OpusReader(); + } else { + return false; + } + return true; + } + + private static ParsableByteArray resetPosition(ParsableByteArray scratch) { + scratch.setPosition(0); + return scratch; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggPacket.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggPacket.java new file mode 100644 index 0000000000..1f3bf38c73 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggPacket.java @@ -0,0 +1,155 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ogg; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; +import java.util.Arrays; + +/** + * OGG packet class. + */ +/* package */ final class OggPacket { + + private final OggPageHeader pageHeader = new OggPageHeader(); + private final ParsableByteArray packetArray = new ParsableByteArray( + new byte[OggPageHeader.MAX_PAGE_PAYLOAD], 0); + + private int currentSegmentIndex = C.INDEX_UNSET; + private int segmentCount; + private boolean populated; + + /** + * Resets this reader. + */ + public void reset() { + pageHeader.reset(); + packetArray.reset(); + currentSegmentIndex = C.INDEX_UNSET; + populated = false; + } + + /** + * Reads the next packet of the ogg stream. In case of an {@code IOException} the caller must make + * sure to pass the same instance of {@code ParsableByteArray} to this method again so this reader + * can resume properly from an error while reading a continued packet spanned across multiple + * pages. + * + * @param input The {@link ExtractorInput} to read data from. + * @return {@code true} if the read was successful. The read fails if the end of the input is + * encountered without reading data. + * @throws IOException If reading from the input fails. + * @throws InterruptedException If the thread is interrupted. + */ + public boolean populate(ExtractorInput input) throws IOException, InterruptedException { + Assertions.checkState(input != null); + + if (populated) { + populated = false; + packetArray.reset(); + } + + while (!populated) { + if (currentSegmentIndex < 0) { + // We're at the start of a page. + if (!pageHeader.populate(input, true)) { + return false; + } + int segmentIndex = 0; + int bytesToSkip = pageHeader.headerSize; + if ((pageHeader.type & 0x01) == 0x01 && packetArray.limit() == 0) { + // After seeking, the first packet may be the remainder + // part of a continued packet which has to be discarded. + bytesToSkip += calculatePacketSize(segmentIndex); + segmentIndex += segmentCount; + } + input.skipFully(bytesToSkip); + currentSegmentIndex = segmentIndex; + } + + int size = calculatePacketSize(currentSegmentIndex); + int segmentIndex = currentSegmentIndex + segmentCount; + if (size > 0) { + if (packetArray.capacity() < packetArray.limit() + size) { + packetArray.data = Arrays.copyOf(packetArray.data, packetArray.limit() + size); + } + input.readFully(packetArray.data, packetArray.limit(), size); + packetArray.setLimit(packetArray.limit() + size); + populated = pageHeader.laces[segmentIndex - 1] != 255; + } + // Advance now since we are sure reading didn't throw an exception. + currentSegmentIndex = segmentIndex == pageHeader.pageSegmentCount ? C.INDEX_UNSET + : segmentIndex; + } + return true; + } + + /** + * An OGG Packet may span multiple pages. Returns the {@link OggPageHeader} of the last page read, + * or an empty header if the packet has yet to be populated. + * + *

Note that the returned {@link OggPageHeader} is mutable and may be updated during subsequent + * calls to {@link #populate(ExtractorInput)}. + * + * @return the {@code PageHeader} of the last page read or an empty header if the packet has yet + * to be populated. + */ + public OggPageHeader getPageHeader() { + return pageHeader; + } + + /** + * Returns a {@link ParsableByteArray} containing the packet's payload. + */ + public ParsableByteArray getPayload() { + return packetArray; + } + + /** + * Trims the packet data array. + */ + public void trimPayload() { + if (packetArray.data.length == OggPageHeader.MAX_PAGE_PAYLOAD) { + return; + } + packetArray.data = Arrays.copyOf(packetArray.data, Math.max(OggPageHeader.MAX_PAGE_PAYLOAD, + packetArray.limit())); + } + + /** + * Calculates the size of the packet starting from {@code startSegmentIndex}. + * + * @param startSegmentIndex the index of the first segment of the packet. + * @return Size of the packet. + */ + private int calculatePacketSize(int startSegmentIndex) { + segmentCount = 0; + int size = 0; + while (startSegmentIndex + segmentCount < pageHeader.pageSegmentCount) { + int segmentLength = pageHeader.laces[startSegmentIndex + segmentCount++]; + size += segmentLength; + if (segmentLength != 255) { + // packets end at first lace < 255 + break; + } + } + return size; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggPageHeader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggPageHeader.java new file mode 100644 index 0000000000..afdccf80fd --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggPageHeader.java @@ -0,0 +1,135 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ogg; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.EOFException; +import java.io.IOException; + +/** + * Data object to store header information. + */ +/* package */ final class OggPageHeader { + + public static final int EMPTY_PAGE_HEADER_SIZE = 27; + public static final int MAX_SEGMENT_COUNT = 255; + public static final int MAX_PAGE_PAYLOAD = 255 * 255; + public static final int MAX_PAGE_SIZE = EMPTY_PAGE_HEADER_SIZE + MAX_SEGMENT_COUNT + + MAX_PAGE_PAYLOAD; + + private static final int TYPE_OGGS = 0x4f676753; + + public int revision; + public int type; + /** + * The absolute granule position of the page. This is the total number of samples from the start + * of the file up to the end of the page. Samples partially in the page that continue on + * the next page do not count. + */ + public long granulePosition; + + public long streamSerialNumber; + public long pageSequenceNumber; + public long pageChecksum; + public int pageSegmentCount; + public int headerSize; + public int bodySize; + /** + * Be aware that {@code laces.length} is always {@link #MAX_SEGMENT_COUNT}. Instead use + * {@link #pageSegmentCount} to iterate. + */ + public final int[] laces = new int[MAX_SEGMENT_COUNT]; + + private final ParsableByteArray scratch = new ParsableByteArray(MAX_SEGMENT_COUNT); + + /** + * Resets all primitive member fields to zero. + */ + public void reset() { + revision = 0; + type = 0; + granulePosition = 0; + streamSerialNumber = 0; + pageSequenceNumber = 0; + pageChecksum = 0; + pageSegmentCount = 0; + headerSize = 0; + bodySize = 0; + } + + /** + * Peeks an Ogg page header and updates this {@link OggPageHeader}. + * + * @param input The {@link ExtractorInput} to read from. + * @param quiet Whether to return {@code false} rather than throwing an exception if the header + * cannot be populated. + * @return Whether the read was successful. The read fails if the end of the input is encountered + * without reading data. + * @throws IOException If reading data fails or the stream is invalid. + * @throws InterruptedException If the thread is interrupted. + */ + public boolean populate(ExtractorInput input, boolean quiet) + throws IOException, InterruptedException { + scratch.reset(); + reset(); + boolean hasEnoughBytes = input.getLength() == C.LENGTH_UNSET + || input.getLength() - input.getPeekPosition() >= EMPTY_PAGE_HEADER_SIZE; + if (!hasEnoughBytes || !input.peekFully(scratch.data, 0, EMPTY_PAGE_HEADER_SIZE, true)) { + if (quiet) { + return false; + } else { + throw new EOFException(); + } + } + if (scratch.readUnsignedInt() != TYPE_OGGS) { + if (quiet) { + return false; + } else { + throw new ParserException("expected OggS capture pattern at begin of page"); + } + } + + revision = scratch.readUnsignedByte(); + if (revision != 0x00) { + if (quiet) { + return false; + } else { + throw new ParserException("unsupported bit stream revision"); + } + } + type = scratch.readUnsignedByte(); + + granulePosition = scratch.readLittleEndianLong(); + streamSerialNumber = scratch.readLittleEndianUnsignedInt(); + pageSequenceNumber = scratch.readLittleEndianUnsignedInt(); + pageChecksum = scratch.readLittleEndianUnsignedInt(); + pageSegmentCount = scratch.readUnsignedByte(); + headerSize = EMPTY_PAGE_HEADER_SIZE + pageSegmentCount; + + // calculate total size of header including laces + scratch.reset(); + input.peekFully(scratch.data, 0, pageSegmentCount); + for (int i = 0; i < pageSegmentCount; i++) { + laces[i] = scratch.readUnsignedByte(); + bodySize += laces[i]; + } + + return true; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggSeeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggSeeker.java new file mode 100644 index 0000000000..0a0be963f7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OggSeeker.java @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ogg; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import java.io.IOException; + +/** + * Used to seek in an Ogg stream. OggSeeker implementation may do direct seeking or progressive + * seeking. OggSeeker works together with a {@link SeekMap} instance to capture the queried position + * and start the seeking with an initial estimated position. + */ +/* package */ interface OggSeeker { + + /** + * Returns a {@link SeekMap} that returns an initial estimated position for progressive seeking + * or the final position for direct seeking. Returns null if {@link #read} has yet to return -1. + */ + SeekMap createSeekMap(); + + /** + * Starts a seek operation. + * + * @param targetGranule The target granule position. + */ + void startSeek(long targetGranule); + + /** + * Reads data from the {@link ExtractorInput} to build the {@link SeekMap} or to continue a seek. + *

+ * If more data is required or if the position of the input needs to be modified then a position + * from which data should be provided is returned. Else a negative value is returned. If a seek + * has been completed then the value returned is -(currentGranule + 2). Else it is -1. + * + * @param input The {@link ExtractorInput} to read from. + * @return A non-negative position to seek the {@link ExtractorInput} to, or -(currentGranule + 2) + * if the progressive seek has completed, or -1 otherwise. + * @throws IOException If reading from the {@link ExtractorInput} fails. + * @throws InterruptedException If the thread is interrupted. + */ + long read(ExtractorInput input) throws IOException, InterruptedException; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OpusReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OpusReader.java new file mode 100644 index 0000000000..c3f3a13d54 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/OpusReader.java @@ -0,0 +1,132 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ogg; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; + +/** + * {@link StreamReader} to extract Opus data out of Ogg byte stream. + */ +/* package */ final class OpusReader extends StreamReader { + + private static final int DEFAULT_SEEK_PRE_ROLL_SAMPLES = 3840; + + /** + * Opus streams are always decoded at 48000 Hz. + */ + private static final int SAMPLE_RATE = 48000; + + private static final int OPUS_CODE = 0x4f707573; + private static final byte[] OPUS_SIGNATURE = {'O', 'p', 'u', 's', 'H', 'e', 'a', 'd'}; + + private boolean headerRead; + + public static boolean verifyBitstreamType(ParsableByteArray data) { + if (data.bytesLeft() < OPUS_SIGNATURE.length) { + return false; + } + byte[] header = new byte[OPUS_SIGNATURE.length]; + data.readBytes(header, 0, OPUS_SIGNATURE.length); + return Arrays.equals(header, OPUS_SIGNATURE); + } + + @Override + protected void reset(boolean headerData) { + super.reset(headerData); + if (headerData) { + headerRead = false; + } + } + + @Override + protected long preparePayload(ParsableByteArray packet) { + return convertTimeToGranule(getPacketDurationUs(packet.data)); + } + + @Override + protected boolean readHeaders(ParsableByteArray packet, long position, SetupData setupData) { + if (!headerRead) { + byte[] metadata = Arrays.copyOf(packet.data, packet.limit()); + int channelCount = metadata[9] & 0xFF; + int preskip = ((metadata[11] & 0xFF) << 8) | (metadata[10] & 0xFF); + + List initializationData = new ArrayList<>(3); + initializationData.add(metadata); + putNativeOrderLong(initializationData, preskip); + putNativeOrderLong(initializationData, DEFAULT_SEEK_PRE_ROLL_SAMPLES); + + setupData.format = Format.createAudioSampleFormat(null, MimeTypes.AUDIO_OPUS, null, + Format.NO_VALUE, Format.NO_VALUE, channelCount, SAMPLE_RATE, initializationData, null, 0, + null); + headerRead = true; + } else { + boolean headerPacket = packet.readInt() == OPUS_CODE; + packet.setPosition(0); + return headerPacket; + } + return true; + } + + private void putNativeOrderLong(List initializationData, int samples) { + long ns = (samples * C.NANOS_PER_SECOND) / SAMPLE_RATE; + byte[] array = ByteBuffer.allocate(8).order(ByteOrder.nativeOrder()).putLong(ns).array(); + initializationData.add(array); + } + + /** + * Returns the duration of the given audio packet. + * + * @param packet Contains audio data. + * @return Returns the duration of the given audio packet. + */ + private long getPacketDurationUs(byte[] packet) { + int toc = packet[0] & 0xFF; + int frames; + switch (toc & 0x3) { + case 0: + frames = 1; + break; + case 1: + case 2: + frames = 2; + break; + default: + frames = packet[1] & 0x3F; + break; + } + + int config = toc >> 3; + int length = config & 0x3; + if (config >= 16) { + length = 2500 << length; + } else if (config >= 12) { + length = 10000 << (length & 0x1); + } else if (length == 3) { + length = 60000; + } else { + length = 10000 << length; + } + return (long) frames * length; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/StreamReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/StreamReader.java new file mode 100644 index 0000000000..067c8aef03 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/StreamReader.java @@ -0,0 +1,268 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ogg; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; + +/** StreamReader abstract class. */ +@SuppressWarnings("UngroupedOverloads") +/* package */ abstract class StreamReader { + + private static final int STATE_READ_HEADERS = 0; + private static final int STATE_SKIP_HEADERS = 1; + private static final int STATE_READ_PAYLOAD = 2; + private static final int STATE_END_OF_INPUT = 3; + + static class SetupData { + Format format; + OggSeeker oggSeeker; + } + + private final OggPacket oggPacket; + + private TrackOutput trackOutput; + private ExtractorOutput extractorOutput; + private OggSeeker oggSeeker; + private long targetGranule; + private long payloadStartPosition; + private long currentGranule; + private int state; + private int sampleRate; + private SetupData setupData; + private long lengthOfReadPacket; + private boolean seekMapSet; + private boolean formatSet; + + public StreamReader() { + oggPacket = new OggPacket(); + } + + void init(ExtractorOutput output, TrackOutput trackOutput) { + this.extractorOutput = output; + this.trackOutput = trackOutput; + reset(true); + } + + /** + * Resets the state of the {@link StreamReader}. + * + * @param headerData Resets parsed header data too. + */ + protected void reset(boolean headerData) { + if (headerData) { + setupData = new SetupData(); + payloadStartPosition = 0; + state = STATE_READ_HEADERS; + } else { + state = STATE_SKIP_HEADERS; + } + targetGranule = -1; + currentGranule = 0; + } + + /** + * @see Extractor#seek(long, long) + */ + final void seek(long position, long timeUs) { + oggPacket.reset(); + if (position == 0) { + reset(!seekMapSet); + } else { + if (state != STATE_READ_HEADERS) { + targetGranule = convertTimeToGranule(timeUs); + oggSeeker.startSeek(targetGranule); + state = STATE_READ_PAYLOAD; + } + } + } + + /** + * @see Extractor#read(ExtractorInput, PositionHolder) + */ + final int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + switch (state) { + case STATE_READ_HEADERS: + return readHeaders(input); + case STATE_SKIP_HEADERS: + input.skipFully((int) payloadStartPosition); + state = STATE_READ_PAYLOAD; + return Extractor.RESULT_CONTINUE; + case STATE_READ_PAYLOAD: + return readPayload(input, seekPosition); + default: + // Never happens. + throw new IllegalStateException(); + } + } + + private int readHeaders(ExtractorInput input) throws IOException, InterruptedException { + boolean readingHeaders = true; + while (readingHeaders) { + if (!oggPacket.populate(input)) { + state = STATE_END_OF_INPUT; + return Extractor.RESULT_END_OF_INPUT; + } + lengthOfReadPacket = input.getPosition() - payloadStartPosition; + + readingHeaders = readHeaders(oggPacket.getPayload(), payloadStartPosition, setupData); + if (readingHeaders) { + payloadStartPosition = input.getPosition(); + } + } + + sampleRate = setupData.format.sampleRate; + if (!formatSet) { + trackOutput.format(setupData.format); + formatSet = true; + } + + if (setupData.oggSeeker != null) { + oggSeeker = setupData.oggSeeker; + } else if (input.getLength() == C.LENGTH_UNSET) { + oggSeeker = new UnseekableOggSeeker(); + } else { + OggPageHeader firstPayloadPageHeader = oggPacket.getPageHeader(); + boolean isLastPage = (firstPayloadPageHeader.type & 0x04) != 0; // Type 4 is end of stream. + oggSeeker = + new DefaultOggSeeker( + this, + payloadStartPosition, + input.getLength(), + firstPayloadPageHeader.headerSize + firstPayloadPageHeader.bodySize, + firstPayloadPageHeader.granulePosition, + isLastPage); + } + + setupData = null; + state = STATE_READ_PAYLOAD; + // First payload packet. Trim the payload array of the ogg packet after headers have been read. + oggPacket.trimPayload(); + return Extractor.RESULT_CONTINUE; + } + + private int readPayload(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + long position = oggSeeker.read(input); + if (position >= 0) { + seekPosition.position = position; + return Extractor.RESULT_SEEK; + } else if (position < -1) { + onSeekEnd(-(position + 2)); + } + if (!seekMapSet) { + SeekMap seekMap = oggSeeker.createSeekMap(); + extractorOutput.seekMap(seekMap); + seekMapSet = true; + } + + if (lengthOfReadPacket > 0 || oggPacket.populate(input)) { + lengthOfReadPacket = 0; + ParsableByteArray payload = oggPacket.getPayload(); + long granulesInPacket = preparePayload(payload); + if (granulesInPacket >= 0 && currentGranule + granulesInPacket >= targetGranule) { + // calculate time and send payload data to codec + long timeUs = convertGranuleToTime(currentGranule); + trackOutput.sampleData(payload, payload.limit()); + trackOutput.sampleMetadata(timeUs, C.BUFFER_FLAG_KEY_FRAME, payload.limit(), 0, null); + targetGranule = -1; + } + currentGranule += granulesInPacket; + } else { + state = STATE_END_OF_INPUT; + return Extractor.RESULT_END_OF_INPUT; + } + return Extractor.RESULT_CONTINUE; + } + + /** + * Converts granule value to time. + * + * @param granule The granule value. + * @return Time in milliseconds. + */ + protected long convertGranuleToTime(long granule) { + return (granule * C.MICROS_PER_SECOND) / sampleRate; + } + + /** + * Converts time value to granule. + * + * @param timeUs Time in milliseconds. + * @return The granule value. + */ + protected long convertTimeToGranule(long timeUs) { + return (sampleRate * timeUs) / C.MICROS_PER_SECOND; + } + + /** + * Prepares payload data in the packet for submitting to TrackOutput and returns number of + * granules in the packet. + * + * @param packet Ogg payload data packet. + * @return Number of granules in the packet or -1 if the packet doesn't contain payload data. + */ + protected abstract long preparePayload(ParsableByteArray packet); + + /** + * Checks if the given packet is a header packet and reads it. + * + * @param packet An ogg packet. + * @param position Position of the given header packet. + * @param setupData Setup data to be filled. + * @return Whether the packet contains header data. + */ + protected abstract boolean readHeaders(ParsableByteArray packet, long position, + SetupData setupData) throws IOException, InterruptedException; + + /** + * Called on end of seeking. + * + * @param currentGranule The granule at the current input position. + */ + protected void onSeekEnd(long currentGranule) { + this.currentGranule = currentGranule; + } + + private static final class UnseekableOggSeeker implements OggSeeker { + + @Override + public long read(ExtractorInput input) { + return -1; + } + + @Override + public void startSeek(long targetGranule) { + // Do nothing. + } + + @Override + public SeekMap createSeekMap() { + return new SeekMap.Unseekable(C.TIME_UNSET); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/VorbisReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/VorbisReader.java new file mode 100644 index 0000000000..cb0678a285 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ogg/VorbisReader.java @@ -0,0 +1,198 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ogg; + +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.VorbisUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.VorbisUtil.Mode; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; +import java.util.ArrayList; + +/** + * {@link StreamReader} to extract Vorbis data out of Ogg byte stream. + */ +/* package */ final class VorbisReader extends StreamReader { + + private VorbisSetup vorbisSetup; + private int previousPacketBlockSize; + private boolean seenFirstAudioPacket; + + private VorbisUtil.VorbisIdHeader vorbisIdHeader; + private VorbisUtil.CommentHeader commentHeader; + + public static boolean verifyBitstreamType(ParsableByteArray data) { + try { + return VorbisUtil.verifyVorbisHeaderCapturePattern(0x01, data, true); + } catch (ParserException e) { + return false; + } + } + + @Override + protected void reset(boolean headerData) { + super.reset(headerData); + if (headerData) { + vorbisSetup = null; + vorbisIdHeader = null; + commentHeader = null; + } + previousPacketBlockSize = 0; + seenFirstAudioPacket = false; + } + + @Override + protected void onSeekEnd(long currentGranule) { + super.onSeekEnd(currentGranule); + seenFirstAudioPacket = currentGranule != 0; + previousPacketBlockSize = vorbisIdHeader != null ? vorbisIdHeader.blockSize0 : 0; + } + + @Override + protected long preparePayload(ParsableByteArray packet) { + // if this is not an audio packet... + if ((packet.data[0] & 0x01) == 1) { + return -1; + } + + // ... we need to decode the block size + int packetBlockSize = decodeBlockSize(packet.data[0], vorbisSetup); + // a packet contains samples produced from overlapping the previous and current frame data + // (https://www.xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-350001.3.2) + int samplesInPacket = seenFirstAudioPacket ? (packetBlockSize + previousPacketBlockSize) / 4 + : 0; + // codec expects the number of samples appended to audio data + appendNumberOfSamples(packet, samplesInPacket); + + // update state in members for next iteration + seenFirstAudioPacket = true; + previousPacketBlockSize = packetBlockSize; + return samplesInPacket; + } + + @Override + protected boolean readHeaders(ParsableByteArray packet, long position, SetupData setupData) + throws IOException, InterruptedException { + if (vorbisSetup != null) { + return false; + } + + vorbisSetup = readSetupHeaders(packet); + if (vorbisSetup == null) { + return true; + } + + ArrayList codecInitialisationData = new ArrayList<>(); + codecInitialisationData.add(vorbisSetup.idHeader.data); + codecInitialisationData.add(vorbisSetup.setupHeaderData); + + setupData.format = Format.createAudioSampleFormat(null, MimeTypes.AUDIO_VORBIS, null, + this.vorbisSetup.idHeader.bitrateNominal, Format.NO_VALUE, + this.vorbisSetup.idHeader.channels, (int) this.vorbisSetup.idHeader.sampleRate, + codecInitialisationData, null, 0, null); + return true; + } + + @VisibleForTesting + /* package */ VorbisSetup readSetupHeaders(ParsableByteArray scratch) throws IOException { + + if (vorbisIdHeader == null) { + vorbisIdHeader = VorbisUtil.readVorbisIdentificationHeader(scratch); + return null; + } + + if (commentHeader == null) { + commentHeader = VorbisUtil.readVorbisCommentHeader(scratch); + return null; + } + + // the third packet contains the setup header + byte[] setupHeaderData = new byte[scratch.limit()]; + // raw data of vorbis setup header has to be passed to decoder as CSD buffer #2 + System.arraycopy(scratch.data, 0, setupHeaderData, 0, scratch.limit()); + // partially decode setup header to get the modes + Mode[] modes = VorbisUtil.readVorbisModes(scratch, vorbisIdHeader.channels); + // we need the ilog of modes all the time when extracting, so we compute it once + int iLogModes = VorbisUtil.iLog(modes.length - 1); + + return new VorbisSetup(vorbisIdHeader, commentHeader, setupHeaderData, modes, iLogModes); + } + + /** + * Reads an int of {@code length} bits from {@code src} starting at {@code + * leastSignificantBitIndex}. + * + * @param src the {@code byte} to read from. + * @param length the length in bits of the int to read. + * @param leastSignificantBitIndex the index of the least significant bit of the int to read. + * @return the int value read. + */ + @VisibleForTesting + /* package */ static int readBits(byte src, int length, int leastSignificantBitIndex) { + return (src >> leastSignificantBitIndex) & (255 >>> (8 - length)); + } + + @VisibleForTesting + /* package */ static void appendNumberOfSamples( + ParsableByteArray buffer, long packetSampleCount) { + + buffer.setLimit(buffer.limit() + 4); + // The vorbis decoder expects the number of samples in the packet + // to be appended to the audio data as an int32 + buffer.data[buffer.limit() - 4] = (byte) (packetSampleCount & 0xFF); + buffer.data[buffer.limit() - 3] = (byte) ((packetSampleCount >>> 8) & 0xFF); + buffer.data[buffer.limit() - 2] = (byte) ((packetSampleCount >>> 16) & 0xFF); + buffer.data[buffer.limit() - 1] = (byte) ((packetSampleCount >>> 24) & 0xFF); + } + + private static int decodeBlockSize(byte firstByteOfAudioPacket, VorbisSetup vorbisSetup) { + // read modeNumber (https://www.xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-730004.3.1) + int modeNumber = readBits(firstByteOfAudioPacket, vorbisSetup.iLogModes, 1); + int currentBlockSize; + if (!vorbisSetup.modes[modeNumber].blockFlag) { + currentBlockSize = vorbisSetup.idHeader.blockSize0; + } else { + currentBlockSize = vorbisSetup.idHeader.blockSize1; + } + return currentBlockSize; + } + + /** + * Class to hold all data read from Vorbis setup headers. + */ + /* package */ static final class VorbisSetup { + + public final VorbisUtil.VorbisIdHeader idHeader; + public final VorbisUtil.CommentHeader commentHeader; + public final byte[] setupHeaderData; + public final Mode[] modes; + public final int iLogModes; + + public VorbisSetup(VorbisUtil.VorbisIdHeader idHeader, VorbisUtil.CommentHeader + commentHeader, byte[] setupHeaderData, Mode[] modes, int iLogModes) { + this.idHeader = idHeader; + this.commentHeader = commentHeader; + this.setupHeaderData = setupHeaderData; + this.modes = modes; + this.iLogModes = iLogModes; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/rawcc/RawCcExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/rawcc/RawCcExtractor.java new file mode 100644 index 0000000000..a7b32782ff --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/rawcc/RawCcExtractor.java @@ -0,0 +1,170 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.rawcc; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; + +/** + * Extracts data from the RawCC container format. + */ +public final class RawCcExtractor implements Extractor { + + private static final int SCRATCH_SIZE = 9; + private static final int HEADER_SIZE = 8; + private static final int HEADER_ID = 0x52434301; + private static final int TIMESTAMP_SIZE_V0 = 4; + private static final int TIMESTAMP_SIZE_V1 = 8; + + // Parser states. + private static final int STATE_READING_HEADER = 0; + private static final int STATE_READING_TIMESTAMP_AND_COUNT = 1; + private static final int STATE_READING_SAMPLES = 2; + + private final Format format; + + private final ParsableByteArray dataScratch; + + private TrackOutput trackOutput; + + private int parserState; + private int version; + private long timestampUs; + private int remainingSampleCount; + private int sampleBytesWritten; + + public RawCcExtractor(Format format) { + this.format = format; + dataScratch = new ParsableByteArray(SCRATCH_SIZE); + parserState = STATE_READING_HEADER; + } + + @Override + public void init(ExtractorOutput output) { + output.seekMap(new SeekMap.Unseekable(C.TIME_UNSET)); + trackOutput = output.track(0, C.TRACK_TYPE_TEXT); + output.endTracks(); + trackOutput.format(format); + } + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + dataScratch.reset(); + input.peekFully(dataScratch.data, 0, HEADER_SIZE); + return dataScratch.readInt() == HEADER_ID; + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + while (true) { + switch (parserState) { + case STATE_READING_HEADER: + if (parseHeader(input)) { + parserState = STATE_READING_TIMESTAMP_AND_COUNT; + } else { + return RESULT_END_OF_INPUT; + } + break; + case STATE_READING_TIMESTAMP_AND_COUNT: + if (parseTimestampAndSampleCount(input)) { + parserState = STATE_READING_SAMPLES; + } else { + parserState = STATE_READING_HEADER; + return RESULT_END_OF_INPUT; + } + break; + case STATE_READING_SAMPLES: + parseSamples(input); + parserState = STATE_READING_TIMESTAMP_AND_COUNT; + return RESULT_CONTINUE; + default: + throw new IllegalStateException(); + } + } + } + + @Override + public void seek(long position, long timeUs) { + parserState = STATE_READING_HEADER; + } + + @Override + public void release() { + // Do nothing + } + + private boolean parseHeader(ExtractorInput input) throws IOException, InterruptedException { + dataScratch.reset(); + if (input.readFully(dataScratch.data, 0, HEADER_SIZE, true)) { + if (dataScratch.readInt() != HEADER_ID) { + throw new IOException("Input not RawCC"); + } + version = dataScratch.readUnsignedByte(); + // no versions use the flag fields yet + return true; + } else { + return false; + } + } + + private boolean parseTimestampAndSampleCount(ExtractorInput input) throws IOException, + InterruptedException { + dataScratch.reset(); + if (version == 0) { + if (!input.readFully(dataScratch.data, 0, TIMESTAMP_SIZE_V0 + 1, true)) { + return false; + } + // version 0 timestamps are 45kHz, so we need to convert them into us + timestampUs = dataScratch.readUnsignedInt() * 1000 / 45; + } else if (version == 1) { + if (!input.readFully(dataScratch.data, 0, TIMESTAMP_SIZE_V1 + 1, true)) { + return false; + } + timestampUs = dataScratch.readLong(); + } else { + throw new ParserException("Unsupported version number: " + version); + } + + remainingSampleCount = dataScratch.readUnsignedByte(); + sampleBytesWritten = 0; + return true; + } + + private void parseSamples(ExtractorInput input) throws IOException, InterruptedException { + for (; remainingSampleCount > 0; remainingSampleCount--) { + dataScratch.reset(); + input.readFully(dataScratch.data, 0, 3); + + trackOutput.sampleData(dataScratch, 3); + sampleBytesWritten += 3; + } + + if (sampleBytesWritten > 0) { + trackOutput.sampleMetadata(timestampUs, C.BUFFER_FLAG_KEY_FRAME, sampleBytesWritten, 0, null); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac3Extractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac3Extractor.java new file mode 100644 index 0000000000..a0a1365935 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac3Extractor.java @@ -0,0 +1,149 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.FLAG_DATA_ALIGNMENT_INDICATOR; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder.ID3_HEADER_LENGTH; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder.ID3_TAG; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac3Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; + +/** + * Extracts data from (E-)AC-3 bitstreams. + */ +public final class Ac3Extractor implements Extractor { + + /** Factory for {@link Ac3Extractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new Ac3Extractor()}; + + /** + * The maximum number of bytes to search when sniffing, excluding ID3 information, before giving + * up. + */ + private static final int MAX_SNIFF_BYTES = 8 * 1024; + private static final int AC3_SYNC_WORD = 0x0B77; + private static final int MAX_SYNC_FRAME_SIZE = 2786; + + private final Ac3Reader reader; + private final ParsableByteArray sampleData; + + private boolean startedPacket; + + /** Creates a new extractor for AC-3 bitstreams. */ + public Ac3Extractor() { + reader = new Ac3Reader(); + sampleData = new ParsableByteArray(MAX_SYNC_FRAME_SIZE); + } + + // Extractor implementation. + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + // Skip any ID3 headers. + ParsableByteArray scratch = new ParsableByteArray(ID3_HEADER_LENGTH); + int startPosition = 0; + while (true) { + input.peekFully(scratch.data, /* offset= */ 0, ID3_HEADER_LENGTH); + scratch.setPosition(0); + if (scratch.readUnsignedInt24() != ID3_TAG) { + break; + } + scratch.skipBytes(3); // version, flags + int length = scratch.readSynchSafeInt(); + startPosition += 10 + length; + input.advancePeekPosition(length); + } + input.resetPeekPosition(); + input.advancePeekPosition(startPosition); + + int headerPosition = startPosition; + int validFramesCount = 0; + while (true) { + input.peekFully(scratch.data, 0, 6); + scratch.setPosition(0); + int syncBytes = scratch.readUnsignedShort(); + if (syncBytes != AC3_SYNC_WORD) { + validFramesCount = 0; + input.resetPeekPosition(); + if (++headerPosition - startPosition >= MAX_SNIFF_BYTES) { + return false; + } + input.advancePeekPosition(headerPosition); + } else { + if (++validFramesCount >= 4) { + return true; + } + int frameSize = Ac3Util.parseAc3SyncframeSize(scratch.data); + if (frameSize == C.LENGTH_UNSET) { + return false; + } + input.advancePeekPosition(frameSize - 6); + } + } + } + + @Override + public void init(ExtractorOutput output) { + reader.createTracks(output, new TrackIdGenerator(0, 1)); + output.endTracks(); + output.seekMap(new SeekMap.Unseekable(C.TIME_UNSET)); + } + + @Override + public void seek(long position, long timeUs) { + startedPacket = false; + reader.seek(); + } + + @Override + public void release() { + // Do nothing. + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) throws IOException, + InterruptedException { + int bytesRead = input.read(sampleData.data, 0, MAX_SYNC_FRAME_SIZE); + if (bytesRead == C.RESULT_END_OF_INPUT) { + return RESULT_END_OF_INPUT; + } + + // Feed whatever data we have to the reader, regardless of whether the read finished or not. + sampleData.setPosition(0); + sampleData.setLimit(bytesRead); + + if (!startedPacket) { + // Pass data to the reader as though it's contained within a single infinitely long packet. + reader.packetStarted(/* pesTimeUs= */ 0, FLAG_DATA_ALIGNMENT_INDICATOR); + startedPacket = true; + } + // TODO: Make it possible for the reader to consume the dataSource directly, so that it becomes + // unnecessary to copy the data through packetBuffer. + reader.consume(sampleData); + return RESULT_CONTINUE; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac3Reader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac3Reader.java new file mode 100644 index 0000000000..3a6eebbcd2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac3Reader.java @@ -0,0 +1,209 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac3Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac3Util.SyncFrameInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Parses a continuous (E-)AC-3 byte stream and extracts individual samples. + */ +public final class Ac3Reader implements ElementaryStreamReader { + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({STATE_FINDING_SYNC, STATE_READING_HEADER, STATE_READING_SAMPLE}) + private @interface State {} + + private static final int STATE_FINDING_SYNC = 0; + private static final int STATE_READING_HEADER = 1; + private static final int STATE_READING_SAMPLE = 2; + + private static final int HEADER_SIZE = 128; + + private final ParsableBitArray headerScratchBits; + private final ParsableByteArray headerScratchBytes; + private final String language; + + private String trackFormatId; + private TrackOutput output; + + @State private int state; + private int bytesRead; + + // Used to find the header. + private boolean lastByteWas0B; + + // Used when parsing the header. + private long sampleDurationUs; + private Format format; + private int sampleSize; + + // Used when reading the samples. + private long timeUs; + + /** + * Constructs a new reader for (E-)AC-3 elementary streams. + */ + public Ac3Reader() { + this(null); + } + + /** + * Constructs a new reader for (E-)AC-3 elementary streams. + * + * @param language Track language. + */ + public Ac3Reader(String language) { + headerScratchBits = new ParsableBitArray(new byte[HEADER_SIZE]); + headerScratchBytes = new ParsableByteArray(headerScratchBits.data); + state = STATE_FINDING_SYNC; + this.language = language; + } + + @Override + public void seek() { + state = STATE_FINDING_SYNC; + bytesRead = 0; + lastByteWas0B = false; + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator generator) { + generator.generateNewId(); + trackFormatId = generator.getFormatId(); + output = extractorOutput.track(generator.getTrackId(), C.TRACK_TYPE_AUDIO); + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + timeUs = pesTimeUs; + } + + @Override + public void consume(ParsableByteArray data) { + while (data.bytesLeft() > 0) { + switch (state) { + case STATE_FINDING_SYNC: + if (skipToNextSync(data)) { + state = STATE_READING_HEADER; + headerScratchBytes.data[0] = 0x0B; + headerScratchBytes.data[1] = 0x77; + bytesRead = 2; + } + break; + case STATE_READING_HEADER: + if (continueRead(data, headerScratchBytes.data, HEADER_SIZE)) { + parseHeader(); + headerScratchBytes.setPosition(0); + output.sampleData(headerScratchBytes, HEADER_SIZE); + state = STATE_READING_SAMPLE; + } + break; + case STATE_READING_SAMPLE: + int bytesToRead = Math.min(data.bytesLeft(), sampleSize - bytesRead); + output.sampleData(data, bytesToRead); + bytesRead += bytesToRead; + if (bytesRead == sampleSize) { + output.sampleMetadata(timeUs, C.BUFFER_FLAG_KEY_FRAME, sampleSize, 0, null); + timeUs += sampleDurationUs; + state = STATE_FINDING_SYNC; + } + break; + default: + break; + } + } + } + + @Override + public void packetFinished() { + // Do nothing. + } + + /** + * Continues a read from the provided {@code source} into a given {@code target}. It's assumed + * that the data should be written into {@code target} starting from an offset of zero. + * + * @param source The source from which to read. + * @param target The target into which data is to be read. + * @param targetLength The target length of the read. + * @return Whether the target length was reached. + */ + private boolean continueRead(ParsableByteArray source, byte[] target, int targetLength) { + int bytesToRead = Math.min(source.bytesLeft(), targetLength - bytesRead); + source.readBytes(target, bytesRead, bytesToRead); + bytesRead += bytesToRead; + return bytesRead == targetLength; + } + + /** + * Locates the next syncword, advancing the position to the byte that immediately follows it. If a + * syncword was not located, the position is advanced to the limit. + * + * @param pesBuffer The buffer whose position should be advanced. + * @return Whether a syncword position was found. + */ + private boolean skipToNextSync(ParsableByteArray pesBuffer) { + while (pesBuffer.bytesLeft() > 0) { + if (!lastByteWas0B) { + lastByteWas0B = pesBuffer.readUnsignedByte() == 0x0B; + continue; + } + int secondByte = pesBuffer.readUnsignedByte(); + if (secondByte == 0x77) { + lastByteWas0B = false; + return true; + } else { + lastByteWas0B = secondByte == 0x0B; + } + } + return false; + } + + /** + * Parses the sample header. + */ + @SuppressWarnings("ReferenceEquality") + private void parseHeader() { + headerScratchBits.setPosition(0); + SyncFrameInfo frameInfo = Ac3Util.parseAc3SyncframeInfo(headerScratchBits); + if (format == null || frameInfo.channelCount != format.channelCount + || frameInfo.sampleRate != format.sampleRate + || frameInfo.mimeType != format.sampleMimeType) { + format = Format.createAudioSampleFormat(trackFormatId, frameInfo.mimeType, null, + Format.NO_VALUE, Format.NO_VALUE, frameInfo.channelCount, frameInfo.sampleRate, null, + null, 0, language); + output.format(format); + } + sampleSize = frameInfo.frameSize; + // In this class a sample is an access unit (syncframe in AC-3), but Format#sampleRate + // specifies the number of PCM audio samples per second. + sampleDurationUs = C.MICROS_PER_SECOND * frameInfo.sampleCount / format.sampleRate; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac4Extractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac4Extractor.java new file mode 100644 index 0000000000..9578d110b7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac4Extractor.java @@ -0,0 +1,156 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac4Util.AC40_SYNCWORD; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac4Util.AC41_SYNCWORD; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.FLAG_DATA_ALIGNMENT_INDICATOR; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder.ID3_HEADER_LENGTH; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder.ID3_TAG; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac4Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; + +/** Extracts data from AC-4 bitstreams. */ +public final class Ac4Extractor implements Extractor { + + /** Factory for {@link Ac4Extractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new Ac4Extractor()}; + + /** + * The maximum number of bytes to search when sniffing, excluding ID3 information, before giving + * up. + */ + private static final int MAX_SNIFF_BYTES = 8 * 1024; + + /** + * The size of the reading buffer, in bytes. This value is determined based on the maximum frame + * size used in broadcast applications. + */ + private static final int READ_BUFFER_SIZE = 16384; + + /** The size of the frame header, in bytes. */ + private static final int FRAME_HEADER_SIZE = 7; + + private final Ac4Reader reader; + private final ParsableByteArray sampleData; + + private boolean startedPacket; + + /** Creates a new extractor for AC-4 bitstreams. */ + public Ac4Extractor() { + reader = new Ac4Reader(); + sampleData = new ParsableByteArray(READ_BUFFER_SIZE); + } + + // Extractor implementation. + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + // Skip any ID3 headers. + ParsableByteArray scratch = new ParsableByteArray(ID3_HEADER_LENGTH); + int startPosition = 0; + while (true) { + input.peekFully(scratch.data, /* offset= */ 0, ID3_HEADER_LENGTH); + scratch.setPosition(0); + if (scratch.readUnsignedInt24() != ID3_TAG) { + break; + } + scratch.skipBytes(3); // version, flags + int length = scratch.readSynchSafeInt(); + startPosition += 10 + length; + input.advancePeekPosition(length); + } + input.resetPeekPosition(); + input.advancePeekPosition(startPosition); + + int headerPosition = startPosition; + int validFramesCount = 0; + while (true) { + input.peekFully(scratch.data, /* offset= */ 0, /* length= */ FRAME_HEADER_SIZE); + scratch.setPosition(0); + int syncBytes = scratch.readUnsignedShort(); + if (syncBytes != AC40_SYNCWORD && syncBytes != AC41_SYNCWORD) { + validFramesCount = 0; + input.resetPeekPosition(); + if (++headerPosition - startPosition >= MAX_SNIFF_BYTES) { + return false; + } + input.advancePeekPosition(headerPosition); + } else { + if (++validFramesCount >= 4) { + return true; + } + int frameSize = Ac4Util.parseAc4SyncframeSize(scratch.data, syncBytes); + if (frameSize == C.LENGTH_UNSET) { + return false; + } + input.advancePeekPosition(frameSize - FRAME_HEADER_SIZE); + } + } + } + + @Override + public void init(ExtractorOutput output) { + reader.createTracks( + output, new TrackIdGenerator(/* firstTrackId= */ 0, /* trackIdIncrement= */ 1)); + output.endTracks(); + output.seekMap(new SeekMap.Unseekable(/* durationUs= */ C.TIME_UNSET)); + } + + @Override + public void seek(long position, long timeUs) { + startedPacket = false; + reader.seek(); + } + + @Override + public void release() { + // Do nothing. + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + int bytesRead = input.read(sampleData.data, /* offset= */ 0, /* length= */ READ_BUFFER_SIZE); + if (bytesRead == C.RESULT_END_OF_INPUT) { + return RESULT_END_OF_INPUT; + } + + // Feed whatever data we have to the reader, regardless of whether the read finished or not. + sampleData.setPosition(0); + sampleData.setLimit(bytesRead); + + if (!startedPacket) { + // Pass data to the reader as though it's contained within a single infinitely long packet. + reader.packetStarted(/* pesTimeUs= */ 0, FLAG_DATA_ALIGNMENT_INDICATOR); + startedPacket = true; + } + // TODO: Make it possible for the reader to consume the dataSource directly, so that it becomes + // unnecessary to copy the data through packetBuffer. + reader.consume(sampleData); + return RESULT_CONTINUE; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac4Reader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac4Reader.java new file mode 100644 index 0000000000..2b9965b19b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Ac4Reader.java @@ -0,0 +1,216 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac4Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.Ac4Util.SyncFrameInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** Parses a continuous AC-4 byte stream and extracts individual samples. */ +public final class Ac4Reader implements ElementaryStreamReader { + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({STATE_FINDING_SYNC, STATE_READING_HEADER, STATE_READING_SAMPLE}) + private @interface State {} + + private static final int STATE_FINDING_SYNC = 0; + private static final int STATE_READING_HEADER = 1; + private static final int STATE_READING_SAMPLE = 2; + + private final ParsableBitArray headerScratchBits; + private final ParsableByteArray headerScratchBytes; + private final String language; + + private String trackFormatId; + private TrackOutput output; + + @State private int state; + private int bytesRead; + + // Used to find the header. + private boolean lastByteWasAC; + private boolean hasCRC; + + // Used when parsing the header. + private long sampleDurationUs; + private Format format; + private int sampleSize; + + // Used when reading the samples. + private long timeUs; + + /** Constructs a new reader for AC-4 elementary streams. */ + public Ac4Reader() { + this(null); + } + + /** + * Constructs a new reader for AC-4 elementary streams. + * + * @param language Track language. + */ + public Ac4Reader(String language) { + headerScratchBits = new ParsableBitArray(new byte[Ac4Util.HEADER_SIZE_FOR_PARSER]); + headerScratchBytes = new ParsableByteArray(headerScratchBits.data); + state = STATE_FINDING_SYNC; + bytesRead = 0; + lastByteWasAC = false; + hasCRC = false; + this.language = language; + } + + @Override + public void seek() { + state = STATE_FINDING_SYNC; + bytesRead = 0; + lastByteWasAC = false; + hasCRC = false; + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator generator) { + generator.generateNewId(); + trackFormatId = generator.getFormatId(); + output = extractorOutput.track(generator.getTrackId(), C.TRACK_TYPE_AUDIO); + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + timeUs = pesTimeUs; + } + + @Override + public void consume(ParsableByteArray data) { + while (data.bytesLeft() > 0) { + switch (state) { + case STATE_FINDING_SYNC: + if (skipToNextSync(data)) { + state = STATE_READING_HEADER; + headerScratchBytes.data[0] = (byte) 0xAC; + headerScratchBytes.data[1] = (byte) (hasCRC ? 0x41 : 0x40); + bytesRead = 2; + } + break; + case STATE_READING_HEADER: + if (continueRead(data, headerScratchBytes.data, Ac4Util.HEADER_SIZE_FOR_PARSER)) { + parseHeader(); + headerScratchBytes.setPosition(0); + output.sampleData(headerScratchBytes, Ac4Util.HEADER_SIZE_FOR_PARSER); + state = STATE_READING_SAMPLE; + } + break; + case STATE_READING_SAMPLE: + int bytesToRead = Math.min(data.bytesLeft(), sampleSize - bytesRead); + output.sampleData(data, bytesToRead); + bytesRead += bytesToRead; + if (bytesRead == sampleSize) { + output.sampleMetadata(timeUs, C.BUFFER_FLAG_KEY_FRAME, sampleSize, 0, null); + timeUs += sampleDurationUs; + state = STATE_FINDING_SYNC; + } + break; + default: + break; + } + } + } + + @Override + public void packetFinished() { + // Do nothing. + } + + /** + * Continues a read from the provided {@code source} into a given {@code target}. It's assumed + * that the data should be written into {@code target} starting from an offset of zero. + * + * @param source The source from which to read. + * @param target The target into which data is to be read. + * @param targetLength The target length of the read. + * @return Whether the target length was reached. + */ + private boolean continueRead(ParsableByteArray source, byte[] target, int targetLength) { + int bytesToRead = Math.min(source.bytesLeft(), targetLength - bytesRead); + source.readBytes(target, bytesRead, bytesToRead); + bytesRead += bytesToRead; + return bytesRead == targetLength; + } + + /** + * Locates the next syncword, advancing the position to the byte that immediately follows it. If a + * syncword was not located, the position is advanced to the limit. + * + * @param pesBuffer The buffer whose position should be advanced. + * @return Whether a syncword position was found. + */ + private boolean skipToNextSync(ParsableByteArray pesBuffer) { + while (pesBuffer.bytesLeft() > 0) { + if (!lastByteWasAC) { + lastByteWasAC = (pesBuffer.readUnsignedByte() == 0xAC); + continue; + } + int secondByte = pesBuffer.readUnsignedByte(); + lastByteWasAC = secondByte == 0xAC; + if (secondByte == 0x40 || secondByte == 0x41) { + hasCRC = secondByte == 0x41; + return true; + } + } + return false; + } + + /** Parses the sample header. */ + @SuppressWarnings("ReferenceEquality") + private void parseHeader() { + headerScratchBits.setPosition(0); + SyncFrameInfo frameInfo = Ac4Util.parseAc4SyncframeInfo(headerScratchBits); + if (format == null + || frameInfo.channelCount != format.channelCount + || frameInfo.sampleRate != format.sampleRate + || !MimeTypes.AUDIO_AC4.equals(format.sampleMimeType)) { + format = + Format.createAudioSampleFormat( + trackFormatId, + MimeTypes.AUDIO_AC4, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + /* maxInputSize= */ Format.NO_VALUE, + frameInfo.channelCount, + frameInfo.sampleRate, + /* initializationData= */ null, + /* drmInitData= */ null, + /* selectionFlags= */ 0, + language); + output.format(format); + } + sampleSize = frameInfo.frameSize; + // In this class a sample is an AC-4 sync frame, but Format#sampleRate specifies the number of + // PCM audio samples per second. + sampleDurationUs = C.MICROS_PER_SECOND * frameInfo.sampleCount / format.sampleRate; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/AdtsExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/AdtsExtractor.java new file mode 100644 index 0000000000..b91abfc75a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/AdtsExtractor.java @@ -0,0 +1,332 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.FLAG_DATA_ALIGNMENT_INDICATOR; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder.ID3_HEADER_LENGTH; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder.ID3_TAG; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ConstantBitrateSeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.EOFException; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Extracts data from AAC bit streams with ADTS framing. + */ +public final class AdtsExtractor implements Extractor { + + /** Factory for {@link AdtsExtractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new AdtsExtractor()}; + + /** + * Flags controlling the behavior of the extractor. Possible flag value is {@link + * #FLAG_ENABLE_CONSTANT_BITRATE_SEEKING}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {FLAG_ENABLE_CONSTANT_BITRATE_SEEKING}) + public @interface Flags {} + /** + * Flag to force enable seeking using a constant bitrate assumption in cases where seeking would + * otherwise not be possible. + * + *

Note that this approach may result in approximated stream duration and seek position that + * are not precise, especially when the stream bitrate varies a lot. + */ + public static final int FLAG_ENABLE_CONSTANT_BITRATE_SEEKING = 1; + + private static final int MAX_PACKET_SIZE = 2 * 1024; + /** + * The maximum number of bytes to search when sniffing, excluding the header, before giving up. + * Frame sizes are represented by 13-bit fields, so expect a valid frame in the first 8192 bytes. + */ + private static final int MAX_SNIFF_BYTES = 8 * 1024; + /** + * The maximum number of frames to use when calculating the average frame size for constant + * bitrate seeking. + */ + private static final int NUM_FRAMES_FOR_AVERAGE_FRAME_SIZE = 1000; + + private final @Flags int flags; + + private final AdtsReader reader; + private final ParsableByteArray packetBuffer; + private final ParsableByteArray scratch; + private final ParsableBitArray scratchBits; + + @Nullable private ExtractorOutput extractorOutput; + + private long firstSampleTimestampUs; + private long firstFramePosition; + private int averageFrameSize; + private boolean hasCalculatedAverageFrameSize; + private boolean startedPacket; + private boolean hasOutputSeekMap; + + /** Creates a new extractor for ADTS bitstreams. */ + public AdtsExtractor() { + this(/* flags= */ 0); + } + + /** + * Creates a new extractor for ADTS bitstreams. + * + * @param flags Flags that control the extractor's behavior. + */ + public AdtsExtractor(@Flags int flags) { + this.flags = flags; + reader = new AdtsReader(true); + packetBuffer = new ParsableByteArray(MAX_PACKET_SIZE); + averageFrameSize = C.LENGTH_UNSET; + firstFramePosition = C.POSITION_UNSET; + // Allocate scratch space for an ID3 header. The same buffer is also used to read 4 byte values. + scratch = new ParsableByteArray(ID3_HEADER_LENGTH); + scratchBits = new ParsableBitArray(scratch.data); + } + + // Extractor implementation. + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + // Skip any ID3 headers. + int startPosition = peekId3Header(input); + + // Try to find four or more consecutive AAC audio frames, exceeding the MPEG TS packet size. + int headerPosition = startPosition; + int totalValidFramesSize = 0; + int validFramesCount = 0; + while (true) { + input.peekFully(scratch.data, 0, 2); + scratch.setPosition(0); + int syncBytes = scratch.readUnsignedShort(); + if (!AdtsReader.isAdtsSyncWord(syncBytes)) { + validFramesCount = 0; + totalValidFramesSize = 0; + input.resetPeekPosition(); + if (++headerPosition - startPosition >= MAX_SNIFF_BYTES) { + return false; + } + input.advancePeekPosition(headerPosition); + } else { + if (++validFramesCount >= 4 && totalValidFramesSize > TsExtractor.TS_PACKET_SIZE) { + return true; + } + + // Skip the frame. + input.peekFully(scratch.data, 0, 4); + scratchBits.setPosition(14); + int frameSize = scratchBits.readBits(13); + // Either the stream is malformed OR we're not parsing an ADTS stream. + if (frameSize <= 6) { + return false; + } + input.advancePeekPosition(frameSize - 6); + totalValidFramesSize += frameSize; + } + } + } + + @Override + public void init(ExtractorOutput output) { + this.extractorOutput = output; + reader.createTracks(output, new TrackIdGenerator(0, 1)); + output.endTracks(); + } + + @Override + public void seek(long position, long timeUs) { + startedPacket = false; + reader.seek(); + firstSampleTimestampUs = timeUs; + } + + @Override + public void release() { + // Do nothing + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + long inputLength = input.getLength(); + boolean canUseConstantBitrateSeeking = + (flags & FLAG_ENABLE_CONSTANT_BITRATE_SEEKING) != 0 && inputLength != C.LENGTH_UNSET; + if (canUseConstantBitrateSeeking) { + calculateAverageFrameSize(input); + } + + int bytesRead = input.read(packetBuffer.data, 0, MAX_PACKET_SIZE); + boolean readEndOfStream = bytesRead == RESULT_END_OF_INPUT; + maybeOutputSeekMap(inputLength, canUseConstantBitrateSeeking, readEndOfStream); + if (readEndOfStream) { + return RESULT_END_OF_INPUT; + } + + // Feed whatever data we have to the reader, regardless of whether the read finished or not. + packetBuffer.setPosition(0); + packetBuffer.setLimit(bytesRead); + + if (!startedPacket) { + // Pass data to the reader as though it's contained within a single infinitely long packet. + reader.packetStarted(firstSampleTimestampUs, FLAG_DATA_ALIGNMENT_INDICATOR); + startedPacket = true; + } + // TODO: Make it possible for reader to consume the dataSource directly, so that it becomes + // unnecessary to copy the data through packetBuffer. + reader.consume(packetBuffer); + return RESULT_CONTINUE; + } + + private int peekId3Header(ExtractorInput input) throws IOException, InterruptedException { + int firstFramePosition = 0; + while (true) { + input.peekFully(scratch.data, /* offset= */ 0, ID3_HEADER_LENGTH); + scratch.setPosition(0); + if (scratch.readUnsignedInt24() != ID3_TAG) { + break; + } + scratch.skipBytes(3); + int length = scratch.readSynchSafeInt(); + firstFramePosition += ID3_HEADER_LENGTH + length; + input.advancePeekPosition(length); + } + input.resetPeekPosition(); + input.advancePeekPosition(firstFramePosition); + if (this.firstFramePosition == C.POSITION_UNSET) { + this.firstFramePosition = firstFramePosition; + } + return firstFramePosition; + } + + private void maybeOutputSeekMap( + long inputLength, boolean canUseConstantBitrateSeeking, boolean readEndOfStream) { + if (hasOutputSeekMap) { + return; + } + boolean useConstantBitrateSeeking = canUseConstantBitrateSeeking && averageFrameSize > 0; + if (useConstantBitrateSeeking + && reader.getSampleDurationUs() == C.TIME_UNSET + && !readEndOfStream) { + // Wait for the sampleDurationUs to be available, or for the end of the stream to be reached, + // before creating seek map. + return; + } + + ExtractorOutput extractorOutput = Assertions.checkNotNull(this.extractorOutput); + if (useConstantBitrateSeeking && reader.getSampleDurationUs() != C.TIME_UNSET) { + extractorOutput.seekMap(getConstantBitrateSeekMap(inputLength)); + } else { + extractorOutput.seekMap(new SeekMap.Unseekable(C.TIME_UNSET)); + } + hasOutputSeekMap = true; + } + + private void calculateAverageFrameSize(ExtractorInput input) + throws IOException, InterruptedException { + if (hasCalculatedAverageFrameSize) { + return; + } + averageFrameSize = C.LENGTH_UNSET; + input.resetPeekPosition(); + if (input.getPosition() == 0) { + // Skip any ID3 headers. + peekId3Header(input); + } + + int numValidFrames = 0; + long totalValidFramesSize = 0; + try { + while (input.peekFully( + scratch.data, /* offset= */ 0, /* length= */ 2, /* allowEndOfInput= */ true)) { + scratch.setPosition(0); + int syncBytes = scratch.readUnsignedShort(); + if (!AdtsReader.isAdtsSyncWord(syncBytes)) { + // Invalid sync byte pattern. + // Constant bit-rate seeking will probably fail for this stream. + numValidFrames = 0; + break; + } else { + // Read the frame size. + if (!input.peekFully( + scratch.data, /* offset= */ 0, /* length= */ 4, /* allowEndOfInput= */ true)) { + break; + } + scratchBits.setPosition(14); + int currentFrameSize = scratchBits.readBits(13); + // Either the stream is malformed OR we're not parsing an ADTS stream. + if (currentFrameSize <= 6) { + hasCalculatedAverageFrameSize = true; + throw new ParserException("Malformed ADTS stream"); + } + totalValidFramesSize += currentFrameSize; + if (++numValidFrames == NUM_FRAMES_FOR_AVERAGE_FRAME_SIZE) { + break; + } + if (!input.advancePeekPosition(currentFrameSize - 6, /* allowEndOfInput= */ true)) { + break; + } + } + } + } catch (EOFException e) { + // We reached the end of the input during a peekFully() or advancePeekPosition() operation. + // This is OK, it just means the input has an incomplete ADTS frame at the end. Ideally + // ExtractorInput would allow these operations to encounter end-of-input without throwing an + // exception [internal: b/145586657]. + } + input.resetPeekPosition(); + if (numValidFrames > 0) { + averageFrameSize = (int) (totalValidFramesSize / numValidFrames); + } else { + averageFrameSize = C.LENGTH_UNSET; + } + hasCalculatedAverageFrameSize = true; + } + + private SeekMap getConstantBitrateSeekMap(long inputLength) { + int bitrate = getBitrateFromFrameSize(averageFrameSize, reader.getSampleDurationUs()); + return new ConstantBitrateSeekMap(inputLength, firstFramePosition, bitrate, averageFrameSize); + } + + /** + * Returns the stream bitrate, given a frame size and the duration of that frame in microseconds. + * + * @param frameSize The size of each frame in the stream. + * @param durationUsPerFrame The duration of the given frame in microseconds. + * @return The stream bitrate. + */ + private static int getBitrateFromFrameSize(int frameSize, long durationUsPerFrame) { + return (int) ((frameSize * C.BITS_PER_BYTE * C.MICROS_PER_SECOND) / durationUsPerFrame); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/AdtsReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/AdtsReader.java new file mode 100644 index 0000000000..f577747ec2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/AdtsReader.java @@ -0,0 +1,532 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import android.util.Pair; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DummyTrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.CodecSpecificDataUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.Arrays; +import java.util.Collections; + +/** + * Parses a continuous ADTS byte stream and extracts individual frames. + */ +public final class AdtsReader implements ElementaryStreamReader { + + private static final String TAG = "AdtsReader"; + + private static final int STATE_FINDING_SAMPLE = 0; + private static final int STATE_CHECKING_ADTS_HEADER = 1; + private static final int STATE_READING_ID3_HEADER = 2; + private static final int STATE_READING_ADTS_HEADER = 3; + private static final int STATE_READING_SAMPLE = 4; + + private static final int HEADER_SIZE = 5; + private static final int CRC_SIZE = 2; + + // Match states used while looking for the next sample + private static final int MATCH_STATE_VALUE_SHIFT = 8; + private static final int MATCH_STATE_START = 1 << MATCH_STATE_VALUE_SHIFT; + private static final int MATCH_STATE_FF = 2 << MATCH_STATE_VALUE_SHIFT; + private static final int MATCH_STATE_I = 3 << MATCH_STATE_VALUE_SHIFT; + private static final int MATCH_STATE_ID = 4 << MATCH_STATE_VALUE_SHIFT; + + private static final int ID3_HEADER_SIZE = 10; + private static final int ID3_SIZE_OFFSET = 6; + private static final byte[] ID3_IDENTIFIER = {'I', 'D', '3'}; + private static final int VERSION_UNSET = -1; + + private final boolean exposeId3; + private final ParsableBitArray adtsScratch; + private final ParsableByteArray id3HeaderBuffer; + private final String language; + + private String formatId; + private TrackOutput output; + private TrackOutput id3Output; + + private int state; + private int bytesRead; + + private int matchState; + + private boolean hasCrc; + private boolean foundFirstFrame; + + // Used to verifies sync words + private int firstFrameVersion; + private int firstFrameSampleRateIndex; + + private int currentFrameVersion; + + // Used when parsing the header. + private boolean hasOutputFormat; + private long sampleDurationUs; + private int sampleSize; + + // Used when reading the samples. + private long timeUs; + + private TrackOutput currentOutput; + private long currentSampleDuration; + + /** + * @param exposeId3 True if the reader should expose ID3 information. + */ + public AdtsReader(boolean exposeId3) { + this(exposeId3, null); + } + + /** + * @param exposeId3 True if the reader should expose ID3 information. + * @param language Track language. + */ + public AdtsReader(boolean exposeId3, String language) { + adtsScratch = new ParsableBitArray(new byte[HEADER_SIZE + CRC_SIZE]); + id3HeaderBuffer = new ParsableByteArray(Arrays.copyOf(ID3_IDENTIFIER, ID3_HEADER_SIZE)); + setFindingSampleState(); + firstFrameVersion = VERSION_UNSET; + firstFrameSampleRateIndex = C.INDEX_UNSET; + sampleDurationUs = C.TIME_UNSET; + this.exposeId3 = exposeId3; + this.language = language; + } + + /** Returns whether an integer matches an ADTS SYNC word. */ + public static boolean isAdtsSyncWord(int candidateSyncWord) { + return (candidateSyncWord & 0xFFF6) == 0xFFF0; + } + + @Override + public void seek() { + resetSync(); + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) { + idGenerator.generateNewId(); + formatId = idGenerator.getFormatId(); + output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_AUDIO); + if (exposeId3) { + idGenerator.generateNewId(); + id3Output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_METADATA); + id3Output.format(Format.createSampleFormat(idGenerator.getFormatId(), + MimeTypes.APPLICATION_ID3, null, Format.NO_VALUE, null)); + } else { + id3Output = new DummyTrackOutput(); + } + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + timeUs = pesTimeUs; + } + + @Override + public void consume(ParsableByteArray data) throws ParserException { + while (data.bytesLeft() > 0) { + switch (state) { + case STATE_FINDING_SAMPLE: + findNextSample(data); + break; + case STATE_READING_ID3_HEADER: + if (continueRead(data, id3HeaderBuffer.data, ID3_HEADER_SIZE)) { + parseId3Header(); + } + break; + case STATE_CHECKING_ADTS_HEADER: + checkAdtsHeader(data); + break; + case STATE_READING_ADTS_HEADER: + int targetLength = hasCrc ? HEADER_SIZE + CRC_SIZE : HEADER_SIZE; + if (continueRead(data, adtsScratch.data, targetLength)) { + parseAdtsHeader(); + } + break; + case STATE_READING_SAMPLE: + readSample(data); + break; + default: + throw new IllegalStateException(); + } + } + } + + @Override + public void packetFinished() { + // Do nothing. + } + + /** + * Returns the duration in microseconds per sample, or {@link C#TIME_UNSET} if the sample duration + * is not available. + */ + public long getSampleDurationUs() { + return sampleDurationUs; + } + + private void resetSync() { + foundFirstFrame = false; + setFindingSampleState(); + } + + /** + * Continues a read from the provided {@code source} into a given {@code target}. It's assumed + * that the data should be written into {@code target} starting from an offset of zero. + * + * @param source The source from which to read. + * @param target The target into which data is to be read. + * @param targetLength The target length of the read. + * @return Whether the target length was reached. + */ + private boolean continueRead(ParsableByteArray source, byte[] target, int targetLength) { + int bytesToRead = Math.min(source.bytesLeft(), targetLength - bytesRead); + source.readBytes(target, bytesRead, bytesToRead); + bytesRead += bytesToRead; + return bytesRead == targetLength; + } + + /** + * Sets the state to STATE_FINDING_SAMPLE. + */ + private void setFindingSampleState() { + state = STATE_FINDING_SAMPLE; + bytesRead = 0; + matchState = MATCH_STATE_START; + } + + /** + * Sets the state to STATE_READING_ID3_HEADER and resets the fields required for + * {@link #parseId3Header()}. + */ + private void setReadingId3HeaderState() { + state = STATE_READING_ID3_HEADER; + bytesRead = ID3_IDENTIFIER.length; + sampleSize = 0; + id3HeaderBuffer.setPosition(0); + } + + /** + * Sets the state to STATE_READING_SAMPLE. + * + * @param outputToUse TrackOutput object to write the sample to + * @param currentSampleDuration Duration of the sample to be read + * @param priorReadBytes Size of prior read bytes + * @param sampleSize Size of the sample + */ + private void setReadingSampleState(TrackOutput outputToUse, long currentSampleDuration, + int priorReadBytes, int sampleSize) { + state = STATE_READING_SAMPLE; + bytesRead = priorReadBytes; + this.currentOutput = outputToUse; + this.currentSampleDuration = currentSampleDuration; + this.sampleSize = sampleSize; + } + + /** + * Sets the state to STATE_READING_ADTS_HEADER. + */ + private void setReadingAdtsHeaderState() { + state = STATE_READING_ADTS_HEADER; + bytesRead = 0; + } + + /** Sets the state to STATE_CHECKING_ADTS_HEADER. */ + private void setCheckingAdtsHeaderState() { + state = STATE_CHECKING_ADTS_HEADER; + bytesRead = 0; + } + + /** + * Locates the next sample start, advancing the position to the byte that immediately follows + * identifier. If a sample was not located, the position is advanced to the limit. + * + * @param pesBuffer The buffer whose position should be advanced. + */ + private void findNextSample(ParsableByteArray pesBuffer) { + byte[] adtsData = pesBuffer.data; + int position = pesBuffer.getPosition(); + int endOffset = pesBuffer.limit(); + while (position < endOffset) { + int data = adtsData[position++] & 0xFF; + if (matchState == MATCH_STATE_FF && isAdtsSyncBytes((byte) 0xFF, (byte) data)) { + if (foundFirstFrame + || checkSyncPositionValid(pesBuffer, /* syncPositionCandidate= */ position - 2)) { + currentFrameVersion = (data & 0x8) >> 3; + hasCrc = (data & 0x1) == 0; + if (!foundFirstFrame) { + setCheckingAdtsHeaderState(); + } else { + setReadingAdtsHeaderState(); + } + pesBuffer.setPosition(position); + return; + } + } + + switch (matchState | data) { + case MATCH_STATE_START | 0xFF: + matchState = MATCH_STATE_FF; + break; + case MATCH_STATE_START | 'I': + matchState = MATCH_STATE_I; + break; + case MATCH_STATE_I | 'D': + matchState = MATCH_STATE_ID; + break; + case MATCH_STATE_ID | '3': + setReadingId3HeaderState(); + pesBuffer.setPosition(position); + return; + default: + if (matchState != MATCH_STATE_START) { + // If matching fails in a later state, revert to MATCH_STATE_START and + // check this byte again + matchState = MATCH_STATE_START; + position--; + } + break; + } + } + pesBuffer.setPosition(position); + } + + /** + * Peeks the Adts header of the current frame and checks if it is valid. If the header is valid, + * transition to {@link #STATE_READING_ADTS_HEADER}; else, transition to {@link + * #STATE_FINDING_SAMPLE}. + */ + private void checkAdtsHeader(ParsableByteArray buffer) { + if (buffer.bytesLeft() == 0) { + // Not enough data to check yet, defer this check. + return; + } + // Peek the next byte of buffer into scratch array. + adtsScratch.data[0] = buffer.data[buffer.getPosition()]; + + adtsScratch.setPosition(2); + int currentFrameSampleRateIndex = adtsScratch.readBits(4); + if (firstFrameSampleRateIndex != C.INDEX_UNSET + && currentFrameSampleRateIndex != firstFrameSampleRateIndex) { + // Invalid header. + resetSync(); + return; + } + + if (!foundFirstFrame) { + foundFirstFrame = true; + firstFrameVersion = currentFrameVersion; + firstFrameSampleRateIndex = currentFrameSampleRateIndex; + } + setReadingAdtsHeaderState(); + } + + /** + * Checks whether a candidate SYNC word position is likely to be the position of a real SYNC word. + * The caller must check that the first byte of the SYNC word is 0xFF before calling this method. + * This method performs the following checks: + * + *

    + *
  • The MPEG version of this frame must match the previously detected version. + *
  • The sample rate index of this frame must match the previously detected sample rate index. + *
  • The frame size must be at least 7 bytes + *
  • The bytes following the frame must be either another SYNC word with the same MPEG + * version, or the start of an ID3 header. + *
+ * + * With the exception of the first check, if there is insufficient data in the buffer then checks + * are optimistically skipped and {@code true} is returned. + * + * @param pesBuffer The buffer containing at data to check. + * @param syncPositionCandidate The candidate SYNC word position. May be -1 if the first byte of + * the candidate was the last byte of the previously consumed buffer. + * @return True if all checks were passed or skipped, indicating the position is likely to be the + * position of a real SYNC word. False otherwise. + */ + private boolean checkSyncPositionValid(ParsableByteArray pesBuffer, int syncPositionCandidate) { + pesBuffer.setPosition(syncPositionCandidate + 1); + if (!tryRead(pesBuffer, adtsScratch.data, 1)) { + return false; + } + + // The MPEG version of this frame must match the previously detected version. + adtsScratch.setPosition(4); + int currentFrameVersion = adtsScratch.readBits(1); + if (firstFrameVersion != VERSION_UNSET && currentFrameVersion != firstFrameVersion) { + return false; + } + + // The sample rate index of this frame must match the previously detected sample rate index. + if (firstFrameSampleRateIndex != C.INDEX_UNSET) { + if (!tryRead(pesBuffer, adtsScratch.data, 1)) { + // Insufficient data for further checks. + return true; + } + adtsScratch.setPosition(2); + int currentFrameSampleRateIndex = adtsScratch.readBits(4); + if (currentFrameSampleRateIndex != firstFrameSampleRateIndex) { + return false; + } + pesBuffer.setPosition(syncPositionCandidate + 2); + } + + // The frame size must be at least 7 bytes. + if (!tryRead(pesBuffer, adtsScratch.data, 4)) { + // Insufficient data for further checks. + return true; + } + adtsScratch.setPosition(14); + int frameSize = adtsScratch.readBits(13); + if (frameSize < 7) { + return false; + } + + // The bytes following the frame must be either another SYNC word with the same MPEG version, or + // the start of an ID3 header. + byte[] data = pesBuffer.data; + int dataLimit = pesBuffer.limit(); + int nextSyncPosition = syncPositionCandidate + frameSize; + if (nextSyncPosition >= dataLimit) { + // Insufficient data for further checks. + return true; + } + if (data[nextSyncPosition] == (byte) 0xFF) { + if (nextSyncPosition + 1 == dataLimit) { + // Insufficient data for further checks. + return true; + } + return isAdtsSyncBytes((byte) 0xFF, data[nextSyncPosition + 1]) + && ((data[nextSyncPosition + 1] & 0x8) >> 3) == currentFrameVersion; + } else { + if (data[nextSyncPosition] != 'I') { + return false; + } + if (nextSyncPosition + 1 == dataLimit) { + // Insufficient data for further checks. + return true; + } + if (data[nextSyncPosition + 1] != 'D') { + return false; + } + if (nextSyncPosition + 2 == dataLimit) { + // Insufficient data for further checks. + return true; + } + return data[nextSyncPosition + 2] == '3'; + } + } + + private boolean isAdtsSyncBytes(byte firstByte, byte secondByte) { + int syncWord = (firstByte & 0xFF) << 8 | (secondByte & 0xFF); + return isAdtsSyncWord(syncWord); + } + + /** Reads {@code targetLength} bytes into target, and returns whether the read succeeded. */ + private boolean tryRead(ParsableByteArray source, byte[] target, int targetLength) { + if (source.bytesLeft() < targetLength) { + return false; + } + source.readBytes(target, /* offset= */ 0, targetLength); + return true; + } + + /** + * Parses the Id3 header. + */ + private void parseId3Header() { + id3Output.sampleData(id3HeaderBuffer, ID3_HEADER_SIZE); + id3HeaderBuffer.setPosition(ID3_SIZE_OFFSET); + setReadingSampleState(id3Output, 0, ID3_HEADER_SIZE, + id3HeaderBuffer.readSynchSafeInt() + ID3_HEADER_SIZE); + } + + /** + * Parses the sample header. + */ + private void parseAdtsHeader() throws ParserException { + adtsScratch.setPosition(0); + + if (!hasOutputFormat) { + int audioObjectType = adtsScratch.readBits(2) + 1; + if (audioObjectType != 2) { + // The stream indicates AAC-Main (1), AAC-SSR (3) or AAC-LTP (4). When the stream indicates + // AAC-Main it's more likely that the stream contains HE-AAC (5), which cannot be + // represented correctly in the 2 bit audio_object_type field in the ADTS header. In + // practice when the stream indicates AAC-SSR or AAC-LTP it more commonly contains AAC-LC or + // HE-AAC. Since most Android devices don't support AAC-Main, AAC-SSR or AAC-LTP, and since + // indicating AAC-LC works for HE-AAC streams, we pretend that we're dealing with AAC-LC and + // hope for the best. In practice this often works. + // See: https://github.com/google/ExoPlayer/issues/774 + // See: https://github.com/google/ExoPlayer/issues/1383 + Log.w(TAG, "Detected audio object type: " + audioObjectType + ", but assuming AAC LC."); + audioObjectType = 2; + } + + adtsScratch.skipBits(5); + int channelConfig = adtsScratch.readBits(3); + + byte[] audioSpecificConfig = + CodecSpecificDataUtil.buildAacAudioSpecificConfig( + audioObjectType, firstFrameSampleRateIndex, channelConfig); + Pair audioParams = CodecSpecificDataUtil.parseAacAudioSpecificConfig( + audioSpecificConfig); + + Format format = Format.createAudioSampleFormat(formatId, MimeTypes.AUDIO_AAC, null, + Format.NO_VALUE, Format.NO_VALUE, audioParams.second, audioParams.first, + Collections.singletonList(audioSpecificConfig), null, 0, language); + // In this class a sample is an access unit, but the MediaFormat sample rate specifies the + // number of PCM audio samples per second. + sampleDurationUs = (C.MICROS_PER_SECOND * 1024) / format.sampleRate; + output.format(format); + hasOutputFormat = true; + } else { + adtsScratch.skipBits(10); + } + + adtsScratch.skipBits(4); + int sampleSize = adtsScratch.readBits(13) - 2 /* the sync word */ - HEADER_SIZE; + if (hasCrc) { + sampleSize -= CRC_SIZE; + } + + setReadingSampleState(output, sampleDurationUs, 0, sampleSize); + } + + /** + * Reads the rest of the sample + */ + private void readSample(ParsableByteArray data) { + int bytesToRead = Math.min(data.bytesLeft(), sampleSize - bytesRead); + currentOutput.sampleData(data, bytesToRead); + bytesRead += bytesToRead; + if (bytesRead == sampleSize) { + currentOutput.sampleMetadata(timeUs, C.BUFFER_FLAG_KEY_FRAME, sampleSize, 0, null); + timeUs += currentSampleDuration; + setFindingSampleState(); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/DefaultTsPayloadReaderFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/DefaultTsPayloadReaderFactory.java new file mode 100644 index 0000000000..cfbc64d2ee --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/DefaultTsPayloadReaderFactory.java @@ -0,0 +1,283 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import android.util.SparseArray; +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.EsInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea.Cea708InitializationData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** + * Default {@link TsPayloadReader.Factory} implementation. + */ +public final class DefaultTsPayloadReaderFactory implements TsPayloadReader.Factory { + + /** + * Flags controlling elementary stream readers' behavior. Possible flag values are {@link + * #FLAG_ALLOW_NON_IDR_KEYFRAMES}, {@link #FLAG_IGNORE_AAC_STREAM}, {@link + * #FLAG_IGNORE_H264_STREAM}, {@link #FLAG_DETECT_ACCESS_UNITS}, {@link + * #FLAG_IGNORE_SPLICE_INFO_STREAM}, {@link #FLAG_OVERRIDE_CAPTION_DESCRIPTORS} and {@link + * #FLAG_ENABLE_HDMV_DTS_AUDIO_STREAMS}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = { + FLAG_ALLOW_NON_IDR_KEYFRAMES, + FLAG_IGNORE_AAC_STREAM, + FLAG_IGNORE_H264_STREAM, + FLAG_DETECT_ACCESS_UNITS, + FLAG_IGNORE_SPLICE_INFO_STREAM, + FLAG_OVERRIDE_CAPTION_DESCRIPTORS, + FLAG_ENABLE_HDMV_DTS_AUDIO_STREAMS + }) + public @interface Flags {} + + /** + * When extracting H.264 samples, whether to treat samples consisting of non-IDR I slices as + * synchronization samples (key-frames). + */ + public static final int FLAG_ALLOW_NON_IDR_KEYFRAMES = 1; + /** + * Prevents the creation of {@link AdtsReader} and {@link LatmReader} instances. This flag should + * be enabled if the transport stream contains no packets for an AAC elementary stream that is + * declared in the PMT. + */ + public static final int FLAG_IGNORE_AAC_STREAM = 1 << 1; + /** + * Prevents the creation of {@link H264Reader} instances. This flag should be enabled if the + * transport stream contains no packets for an H.264 elementary stream that is declared in the + * PMT. + */ + public static final int FLAG_IGNORE_H264_STREAM = 1 << 2; + /** + * When extracting H.264 samples, whether to split the input stream into access units (samples) + * based on slice headers. This flag should be disabled if the stream contains access unit + * delimiters (AUDs). + */ + public static final int FLAG_DETECT_ACCESS_UNITS = 1 << 3; + /** Prevents the creation of {@link SpliceInfoSectionReader} instances. */ + public static final int FLAG_IGNORE_SPLICE_INFO_STREAM = 1 << 4; + /** + * Whether the list of {@code closedCaptionFormats} passed to {@link + * DefaultTsPayloadReaderFactory#DefaultTsPayloadReaderFactory(int, List)} should be used in spite + * of any closed captions service descriptors. If this flag is disabled, {@code + * closedCaptionFormats} will be ignored if the PMT contains closed captions service descriptors. + */ + public static final int FLAG_OVERRIDE_CAPTION_DESCRIPTORS = 1 << 5; + /** + * Sets whether HDMV DTS audio streams will be handled. If this flag is set, SCTE subtitles will + * not be detected, as they share the same elementary stream type as HDMV DTS. + */ + public static final int FLAG_ENABLE_HDMV_DTS_AUDIO_STREAMS = 1 << 6; + + private static final int DESCRIPTOR_TAG_CAPTION_SERVICE = 0x86; + + @Flags private final int flags; + private final List closedCaptionFormats; + + public DefaultTsPayloadReaderFactory() { + this(0); + } + + /** + * @param flags A combination of {@code FLAG_*} values that control the behavior of the created + * readers. + */ + public DefaultTsPayloadReaderFactory(@Flags int flags) { + this( + flags, + Collections.singletonList( + Format.createTextSampleFormat(null, MimeTypes.APPLICATION_CEA608, 0, null))); + } + + /** + * @param flags A combination of {@code FLAG_*} values that control the behavior of the created + * readers. + * @param closedCaptionFormats {@link Format}s to be exposed by payload readers for streams with + * embedded closed captions when no caption service descriptors are provided. If + * {@link #FLAG_OVERRIDE_CAPTION_DESCRIPTORS} is set, {@code closedCaptionFormats} overrides + * any descriptor information. If not set, and {@code closedCaptionFormats} is empty, a + * closed caption track with {@link Format#accessibilityChannel} {@link Format#NO_VALUE} will + * be exposed. + */ + public DefaultTsPayloadReaderFactory(@Flags int flags, List closedCaptionFormats) { + this.flags = flags; + this.closedCaptionFormats = closedCaptionFormats; + } + + @Override + public SparseArray createInitialPayloadReaders() { + return new SparseArray<>(); + } + + @Override + @SuppressWarnings("fallthrough") + public TsPayloadReader createPayloadReader(int streamType, EsInfo esInfo) { + switch (streamType) { + case TsExtractor.TS_STREAM_TYPE_MPA: + case TsExtractor.TS_STREAM_TYPE_MPA_LSF: + return new PesReader(new MpegAudioReader(esInfo.language)); + case TsExtractor.TS_STREAM_TYPE_AAC_ADTS: + return isSet(FLAG_IGNORE_AAC_STREAM) + ? null : new PesReader(new AdtsReader(false, esInfo.language)); + case TsExtractor.TS_STREAM_TYPE_AAC_LATM: + return isSet(FLAG_IGNORE_AAC_STREAM) + ? null : new PesReader(new LatmReader(esInfo.language)); + case TsExtractor.TS_STREAM_TYPE_AC3: + case TsExtractor.TS_STREAM_TYPE_E_AC3: + return new PesReader(new Ac3Reader(esInfo.language)); + case TsExtractor.TS_STREAM_TYPE_AC4: + return new PesReader(new Ac4Reader(esInfo.language)); + case TsExtractor.TS_STREAM_TYPE_HDMV_DTS: + if (!isSet(FLAG_ENABLE_HDMV_DTS_AUDIO_STREAMS)) { + return null; + } + // Fall through. + case TsExtractor.TS_STREAM_TYPE_DTS: + return new PesReader(new DtsReader(esInfo.language)); + case TsExtractor.TS_STREAM_TYPE_H262: + return new PesReader(new H262Reader(buildUserDataReader(esInfo))); + case TsExtractor.TS_STREAM_TYPE_H264: + return isSet(FLAG_IGNORE_H264_STREAM) ? null + : new PesReader(new H264Reader(buildSeiReader(esInfo), + isSet(FLAG_ALLOW_NON_IDR_KEYFRAMES), isSet(FLAG_DETECT_ACCESS_UNITS))); + case TsExtractor.TS_STREAM_TYPE_H265: + return new PesReader(new H265Reader(buildSeiReader(esInfo))); + case TsExtractor.TS_STREAM_TYPE_SPLICE_INFO: + return isSet(FLAG_IGNORE_SPLICE_INFO_STREAM) + ? null : new SectionReader(new SpliceInfoSectionReader()); + case TsExtractor.TS_STREAM_TYPE_ID3: + return new PesReader(new Id3Reader()); + case TsExtractor.TS_STREAM_TYPE_DVBSUBS: + return new PesReader( + new DvbSubtitleReader(esInfo.dvbSubtitleInfos)); + default: + return null; + } + } + + /** + * If {@link #FLAG_OVERRIDE_CAPTION_DESCRIPTORS} is set, returns a {@link SeiReader} for + * {@link #closedCaptionFormats}. If unset, parses the PMT descriptor information and returns a + * {@link SeiReader} for the declared formats, or {@link #closedCaptionFormats} if the descriptor + * is not present. + * + * @param esInfo The {@link EsInfo} passed to {@link #createPayloadReader(int, EsInfo)}. + * @return A {@link SeiReader} for closed caption tracks. + */ + private SeiReader buildSeiReader(EsInfo esInfo) { + return new SeiReader(getClosedCaptionFormats(esInfo)); + } + + /** + * If {@link #FLAG_OVERRIDE_CAPTION_DESCRIPTORS} is set, returns a {@link UserDataReader} for + * {@link #closedCaptionFormats}. If unset, parses the PMT descriptor information and returns a + * {@link UserDataReader} for the declared formats, or {@link #closedCaptionFormats} if the + * descriptor is not present. + * + * @param esInfo The {@link EsInfo} passed to {@link #createPayloadReader(int, EsInfo)}. + * @return A {@link UserDataReader} for closed caption tracks. + */ + private UserDataReader buildUserDataReader(EsInfo esInfo) { + return new UserDataReader(getClosedCaptionFormats(esInfo)); + } + + /** + * If {@link #FLAG_OVERRIDE_CAPTION_DESCRIPTORS} is set, returns a {@link List} of {@link + * #closedCaptionFormats}. If unset, parses the PMT descriptor information and returns a {@link + * List} for the declared formats, or {@link #closedCaptionFormats} if the descriptor is + * not present. + * + * @param esInfo The {@link EsInfo} passed to {@link #createPayloadReader(int, EsInfo)}. + * @return A {@link List} containing list of closed caption formats. + */ + private List getClosedCaptionFormats(EsInfo esInfo) { + if (isSet(FLAG_OVERRIDE_CAPTION_DESCRIPTORS)) { + return closedCaptionFormats; + } + ParsableByteArray scratchDescriptorData = new ParsableByteArray(esInfo.descriptorBytes); + List closedCaptionFormats = this.closedCaptionFormats; + while (scratchDescriptorData.bytesLeft() > 0) { + int descriptorTag = scratchDescriptorData.readUnsignedByte(); + int descriptorLength = scratchDescriptorData.readUnsignedByte(); + int nextDescriptorPosition = scratchDescriptorData.getPosition() + descriptorLength; + if (descriptorTag == DESCRIPTOR_TAG_CAPTION_SERVICE) { + // Note: see ATSC A/65 for detailed information about the caption service descriptor. + closedCaptionFormats = new ArrayList<>(); + int numberOfServices = scratchDescriptorData.readUnsignedByte() & 0x1F; + for (int i = 0; i < numberOfServices; i++) { + String language = scratchDescriptorData.readString(3); + int captionTypeByte = scratchDescriptorData.readUnsignedByte(); + boolean isDigital = (captionTypeByte & 0x80) != 0; + String mimeType; + int accessibilityChannel; + if (isDigital) { + mimeType = MimeTypes.APPLICATION_CEA708; + accessibilityChannel = captionTypeByte & 0x3F; + } else { + mimeType = MimeTypes.APPLICATION_CEA608; + accessibilityChannel = 1; + } + + // easy_reader(1), wide_aspect_ratio(1), reserved(6). + byte flags = (byte) scratchDescriptorData.readUnsignedByte(); + // Skip reserved (8). + scratchDescriptorData.skipBytes(1); + + List initializationData = null; + // The wide_aspect_ratio flag only has meaning for CEA-708. + if (isDigital) { + boolean isWideAspectRatio = (flags & 0x40) != 0; + initializationData = Cea708InitializationData.buildData(isWideAspectRatio); + } + + closedCaptionFormats.add( + Format.createTextSampleFormat( + /* id= */ null, + mimeType, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + /* selectionFlags= */ 0, + language, + accessibilityChannel, + /* drmInitData= */ null, + Format.OFFSET_SAMPLE_RELATIVE, + initializationData)); + } + } else { + // Unknown descriptor. Ignore. + } + scratchDescriptorData.setPosition(nextDescriptorPosition); + } + + return closedCaptionFormats; + } + + private boolean isSet(@Flags int flag) { + return (flags & flag) != 0; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/DtsReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/DtsReader.java new file mode 100644 index 0000000000..a4205add7b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/DtsReader.java @@ -0,0 +1,181 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.DtsUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; + +/** + * Parses a continuous DTS byte stream and extracts individual samples. + */ +public final class DtsReader implements ElementaryStreamReader { + + private static final int STATE_FINDING_SYNC = 0; + private static final int STATE_READING_HEADER = 1; + private static final int STATE_READING_SAMPLE = 2; + + private static final int HEADER_SIZE = 18; + + private final ParsableByteArray headerScratchBytes; + private final String language; + + private String formatId; + private TrackOutput output; + + private int state; + private int bytesRead; + + // Used to find the header. + private int syncBytes; + + // Used when parsing the header. + private long sampleDurationUs; + private Format format; + private int sampleSize; + + // Used when reading the samples. + private long timeUs; + + /** + * Constructs a new reader for DTS elementary streams. + * + * @param language Track language. + */ + public DtsReader(String language) { + headerScratchBytes = new ParsableByteArray(new byte[HEADER_SIZE]); + state = STATE_FINDING_SYNC; + this.language = language; + } + + @Override + public void seek() { + state = STATE_FINDING_SYNC; + bytesRead = 0; + syncBytes = 0; + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) { + idGenerator.generateNewId(); + formatId = idGenerator.getFormatId(); + output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_AUDIO); + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + timeUs = pesTimeUs; + } + + @Override + public void consume(ParsableByteArray data) { + while (data.bytesLeft() > 0) { + switch (state) { + case STATE_FINDING_SYNC: + if (skipToNextSync(data)) { + state = STATE_READING_HEADER; + } + break; + case STATE_READING_HEADER: + if (continueRead(data, headerScratchBytes.data, HEADER_SIZE)) { + parseHeader(); + headerScratchBytes.setPosition(0); + output.sampleData(headerScratchBytes, HEADER_SIZE); + state = STATE_READING_SAMPLE; + } + break; + case STATE_READING_SAMPLE: + int bytesToRead = Math.min(data.bytesLeft(), sampleSize - bytesRead); + output.sampleData(data, bytesToRead); + bytesRead += bytesToRead; + if (bytesRead == sampleSize) { + output.sampleMetadata(timeUs, C.BUFFER_FLAG_KEY_FRAME, sampleSize, 0, null); + timeUs += sampleDurationUs; + state = STATE_FINDING_SYNC; + } + break; + default: + throw new IllegalStateException(); + } + } + } + + @Override + public void packetFinished() { + // Do nothing. + } + + /** + * Continues a read from the provided {@code source} into a given {@code target}. It's assumed + * that the data should be written into {@code target} starting from an offset of zero. + * + * @param source The source from which to read. + * @param target The target into which data is to be read. + * @param targetLength The target length of the read. + * @return Whether the target length was reached. + */ + private boolean continueRead(ParsableByteArray source, byte[] target, int targetLength) { + int bytesToRead = Math.min(source.bytesLeft(), targetLength - bytesRead); + source.readBytes(target, bytesRead, bytesToRead); + bytesRead += bytesToRead; + return bytesRead == targetLength; + } + + /** + * Locates the next SYNC value in the buffer, advancing the position to the byte that immediately + * follows it. If SYNC was not located, the position is advanced to the limit. + * + * @param pesBuffer The buffer whose position should be advanced. + * @return Whether SYNC was found. + */ + private boolean skipToNextSync(ParsableByteArray pesBuffer) { + while (pesBuffer.bytesLeft() > 0) { + syncBytes <<= 8; + syncBytes |= pesBuffer.readUnsignedByte(); + if (DtsUtil.isSyncWord(syncBytes)) { + headerScratchBytes.data[0] = (byte) ((syncBytes >> 24) & 0xFF); + headerScratchBytes.data[1] = (byte) ((syncBytes >> 16) & 0xFF); + headerScratchBytes.data[2] = (byte) ((syncBytes >> 8) & 0xFF); + headerScratchBytes.data[3] = (byte) (syncBytes & 0xFF); + bytesRead = 4; + syncBytes = 0; + return true; + } + } + return false; + } + + /** + * Parses the sample header. + */ + private void parseHeader() { + byte[] frameData = headerScratchBytes.data; + if (format == null) { + format = DtsUtil.parseDtsFormat(frameData, formatId, language, null); + output.format(format); + } + sampleSize = DtsUtil.getDtsFrameSize(frameData); + // In this class a sample is an access unit (frame in DTS), but the format's sample rate + // specifies the number of PCM audio samples per second. + sampleDurationUs = (int) (C.MICROS_PER_SECOND + * DtsUtil.parseDtsAudioSampleCount(frameData) / format.sampleRate); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/DvbSubtitleReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/DvbSubtitleReader.java new file mode 100644 index 0000000000..aceab78bf0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/DvbSubtitleReader.java @@ -0,0 +1,130 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.FLAG_DATA_ALIGNMENT_INDICATOR; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.DvbSubtitleInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.Collections; +import java.util.List; + +/** + * Parses DVB subtitle data and extracts individual frames. + */ +public final class DvbSubtitleReader implements ElementaryStreamReader { + + private final List subtitleInfos; + private final TrackOutput[] outputs; + + private boolean writingSample; + private int bytesToCheck; + private int sampleBytesWritten; + private long sampleTimeUs; + + /** + * @param subtitleInfos Information about the DVB subtitles associated to the stream. + */ + public DvbSubtitleReader(List subtitleInfos) { + this.subtitleInfos = subtitleInfos; + outputs = new TrackOutput[subtitleInfos.size()]; + } + + @Override + public void seek() { + writingSample = false; + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) { + for (int i = 0; i < outputs.length; i++) { + DvbSubtitleInfo subtitleInfo = subtitleInfos.get(i); + idGenerator.generateNewId(); + TrackOutput output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_TEXT); + output.format( + Format.createImageSampleFormat( + idGenerator.getFormatId(), + MimeTypes.APPLICATION_DVBSUBS, + null, + Format.NO_VALUE, + 0, + Collections.singletonList(subtitleInfo.initializationData), + subtitleInfo.language, + null)); + outputs[i] = output; + } + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + if ((flags & FLAG_DATA_ALIGNMENT_INDICATOR) == 0) { + return; + } + writingSample = true; + sampleTimeUs = pesTimeUs; + sampleBytesWritten = 0; + bytesToCheck = 2; + } + + @Override + public void packetFinished() { + if (writingSample) { + for (TrackOutput output : outputs) { + output.sampleMetadata(sampleTimeUs, C.BUFFER_FLAG_KEY_FRAME, sampleBytesWritten, 0, null); + } + writingSample = false; + } + } + + @Override + public void consume(ParsableByteArray data) { + if (writingSample) { + if (bytesToCheck == 2 && !checkNextByte(data, 0x20)) { + // Failed to check data_identifier + return; + } + if (bytesToCheck == 1 && !checkNextByte(data, 0x00)) { + // Check and discard the subtitle_stream_id + return; + } + int dataPosition = data.getPosition(); + int bytesAvailable = data.bytesLeft(); + for (TrackOutput output : outputs) { + data.setPosition(dataPosition); + output.sampleData(data, bytesAvailable); + } + sampleBytesWritten += bytesAvailable; + } + } + + private boolean checkNextByte(ParsableByteArray data, int expectedValue) { + if (data.bytesLeft() == 0) { + return false; + } + if (data.readUnsignedByte() != expectedValue) { + writingSample = false; + } + bytesToCheck--; + return writingSample; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/ElementaryStreamReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/ElementaryStreamReader.java new file mode 100644 index 0000000000..edd33d02c2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/ElementaryStreamReader.java @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; + +/** + * Extracts individual samples from an elementary media stream, preserving original order. + */ +public interface ElementaryStreamReader { + + /** + * Notifies the reader that a seek has occurred. + */ + void seek(); + + /** + * Initializes the reader by providing outputs and ids for the tracks. + * + * @param extractorOutput The {@link ExtractorOutput} that receives the extracted data. + * @param idGenerator A {@link PesReader.TrackIdGenerator} that generates unique track ids for the + * {@link TrackOutput}s. + */ + void createTracks(ExtractorOutput extractorOutput, PesReader.TrackIdGenerator idGenerator); + + /** + * Called when a packet starts. + * + * @param pesTimeUs The timestamp associated with the packet. + * @param flags See {@link TsPayloadReader.Flags}. + */ + void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags); + + /** + * Consumes (possibly partial) data from the current packet. + * + * @param data The data to consume. + * @throws ParserException If the data could not be parsed. + */ + void consume(ParsableByteArray data) throws ParserException; + + /** + * Called when a packet ends. + */ + void packetFinished(); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/H262Reader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/H262Reader.java new file mode 100644 index 0000000000..576607366e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/H262Reader.java @@ -0,0 +1,333 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import android.util.Pair; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.Arrays; +import java.util.Collections; + +/** + * Parses a continuous H262 byte stream and extracts individual frames. + */ +public final class H262Reader implements ElementaryStreamReader { + + private static final int START_PICTURE = 0x00; + private static final int START_SEQUENCE_HEADER = 0xB3; + private static final int START_EXTENSION = 0xB5; + private static final int START_GROUP = 0xB8; + private static final int START_USER_DATA = 0xB2; + + private String formatId; + private TrackOutput output; + + // Maps (frame_rate_code - 1) indices to values, as defined in ITU-T H.262 Table 6-4. + private static final double[] FRAME_RATE_VALUES = new double[] { + 24000d / 1001, 24, 25, 30000d / 1001, 30, 50, 60000d / 1001, 60}; + + // State that should not be reset on seek. + private boolean hasOutputFormat; + private long frameDurationUs; + + private final UserDataReader userDataReader; + private final ParsableByteArray userDataParsable; + + // State that should be reset on seek. + private final boolean[] prefixFlags; + private final CsdBuffer csdBuffer; + private final NalUnitTargetBuffer userData; + private long totalBytesWritten; + private boolean startedFirstSample; + + // Per packet state that gets reset at the start of each packet. + private long pesTimeUs; + + // Per sample state that gets reset at the start of each sample. + private long samplePosition; + private long sampleTimeUs; + private boolean sampleIsKeyframe; + private boolean sampleHasPicture; + + public H262Reader() { + this(null); + } + + /* package */ H262Reader(UserDataReader userDataReader) { + this.userDataReader = userDataReader; + prefixFlags = new boolean[4]; + csdBuffer = new CsdBuffer(128); + if (userDataReader != null) { + userData = new NalUnitTargetBuffer(START_USER_DATA, 128); + userDataParsable = new ParsableByteArray(); + } else { + userData = null; + userDataParsable = null; + } + } + + @Override + public void seek() { + NalUnitUtil.clearPrefixFlags(prefixFlags); + csdBuffer.reset(); + if (userDataReader != null) { + userData.reset(); + } + totalBytesWritten = 0; + startedFirstSample = false; + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) { + idGenerator.generateNewId(); + formatId = idGenerator.getFormatId(); + output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_VIDEO); + if (userDataReader != null) { + userDataReader.createTracks(extractorOutput, idGenerator); + } + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + // TODO (Internal b/32267012): Consider using random access indicator. + this.pesTimeUs = pesTimeUs; + } + + @Override + public void consume(ParsableByteArray data) { + int offset = data.getPosition(); + int limit = data.limit(); + byte[] dataArray = data.data; + + // Append the data to the buffer. + totalBytesWritten += data.bytesLeft(); + output.sampleData(data, data.bytesLeft()); + + while (true) { + int startCodeOffset = NalUnitUtil.findNalUnit(dataArray, offset, limit, prefixFlags); + + if (startCodeOffset == limit) { + // We've scanned to the end of the data without finding another start code. + if (!hasOutputFormat) { + csdBuffer.onData(dataArray, offset, limit); + } + if (userDataReader != null) { + userData.appendToNalUnit(dataArray, offset, limit); + } + return; + } + + // We've found a start code with the following value. + int startCodeValue = data.data[startCodeOffset + 3] & 0xFF; + // This is the number of bytes from the current offset to the start of the next start + // code. It may be negative if the start code started in the previously consumed data. + int lengthToStartCode = startCodeOffset - offset; + + if (!hasOutputFormat) { + if (lengthToStartCode > 0) { + csdBuffer.onData(dataArray, offset, startCodeOffset); + } + // This is the number of bytes belonging to the next start code that have already been + // passed to csdBuffer. + int bytesAlreadyPassed = lengthToStartCode < 0 ? -lengthToStartCode : 0; + if (csdBuffer.onStartCode(startCodeValue, bytesAlreadyPassed)) { + // The csd data is complete, so we can decode and output the media format. + Pair result = parseCsdBuffer(csdBuffer, formatId); + output.format(result.first); + frameDurationUs = result.second; + hasOutputFormat = true; + } + } + if (userDataReader != null) { + int bytesAlreadyPassed = 0; + if (lengthToStartCode > 0) { + userData.appendToNalUnit(dataArray, offset, startCodeOffset); + } else { + bytesAlreadyPassed = -lengthToStartCode; + } + + if (userData.endNalUnit(bytesAlreadyPassed)) { + int unescapedLength = NalUnitUtil.unescapeStream(userData.nalData, userData.nalLength); + userDataParsable.reset(userData.nalData, unescapedLength); + userDataReader.consume(sampleTimeUs, userDataParsable); + } + + if (startCodeValue == START_USER_DATA && data.data[startCodeOffset + 2] == 0x1) { + userData.startNalUnit(startCodeValue); + } + } + if (startCodeValue == START_PICTURE || startCodeValue == START_SEQUENCE_HEADER) { + int bytesWrittenPastStartCode = limit - startCodeOffset; + if (startedFirstSample && sampleHasPicture && hasOutputFormat) { + // Output the sample. + @C.BufferFlags int flags = sampleIsKeyframe ? C.BUFFER_FLAG_KEY_FRAME : 0; + int size = (int) (totalBytesWritten - samplePosition) - bytesWrittenPastStartCode; + output.sampleMetadata(sampleTimeUs, flags, size, bytesWrittenPastStartCode, null); + } + if (!startedFirstSample || sampleHasPicture) { + // Start the next sample. + samplePosition = totalBytesWritten - bytesWrittenPastStartCode; + sampleTimeUs = pesTimeUs != C.TIME_UNSET ? pesTimeUs + : (startedFirstSample ? (sampleTimeUs + frameDurationUs) : 0); + sampleIsKeyframe = false; + pesTimeUs = C.TIME_UNSET; + startedFirstSample = true; + } + sampleHasPicture = startCodeValue == START_PICTURE; + } else if (startCodeValue == START_GROUP) { + sampleIsKeyframe = true; + } + + offset = startCodeOffset + 3; + } + } + + @Override + public void packetFinished() { + // Do nothing. + } + + /** + * Parses the {@link Format} and frame duration from a csd buffer. + * + * @param csdBuffer The csd buffer. + * @param formatId The id for the generated format. May be null. + * @return A pair consisting of the {@link Format} and the frame duration in microseconds, or + * 0 if the duration could not be determined. + */ + private static Pair parseCsdBuffer(CsdBuffer csdBuffer, String formatId) { + byte[] csdData = Arrays.copyOf(csdBuffer.data, csdBuffer.length); + + int firstByte = csdData[4] & 0xFF; + int secondByte = csdData[5] & 0xFF; + int thirdByte = csdData[6] & 0xFF; + int width = (firstByte << 4) | (secondByte >> 4); + int height = (secondByte & 0x0F) << 8 | thirdByte; + + float pixelWidthHeightRatio = 1f; + int aspectRatioCode = (csdData[7] & 0xF0) >> 4; + switch(aspectRatioCode) { + case 2: + pixelWidthHeightRatio = (4 * height) / (float) (3 * width); + break; + case 3: + pixelWidthHeightRatio = (16 * height) / (float) (9 * width); + break; + case 4: + pixelWidthHeightRatio = (121 * height) / (float) (100 * width); + break; + default: + // Do nothing. + break; + } + + Format format = Format.createVideoSampleFormat(formatId, MimeTypes.VIDEO_MPEG2, null, + Format.NO_VALUE, Format.NO_VALUE, width, height, Format.NO_VALUE, + Collections.singletonList(csdData), Format.NO_VALUE, pixelWidthHeightRatio, null); + + long frameDurationUs = 0; + int frameRateCodeMinusOne = (csdData[7] & 0x0F) - 1; + if (0 <= frameRateCodeMinusOne && frameRateCodeMinusOne < FRAME_RATE_VALUES.length) { + double frameRate = FRAME_RATE_VALUES[frameRateCodeMinusOne]; + int sequenceExtensionPosition = csdBuffer.sequenceExtensionPosition; + int frameRateExtensionN = (csdData[sequenceExtensionPosition + 9] & 0x60) >> 5; + int frameRateExtensionD = (csdData[sequenceExtensionPosition + 9] & 0x1F); + if (frameRateExtensionN != frameRateExtensionD) { + frameRate *= (frameRateExtensionN + 1d) / (frameRateExtensionD + 1); + } + frameDurationUs = (long) (C.MICROS_PER_SECOND / frameRate); + } + + return Pair.create(format, frameDurationUs); + } + + private static final class CsdBuffer { + + private static final byte[] START_CODE = new byte[] {0, 0, 1}; + + private boolean isFilling; + + public int length; + public int sequenceExtensionPosition; + public byte[] data; + + public CsdBuffer(int initialCapacity) { + data = new byte[initialCapacity]; + } + + /** + * Resets the buffer, clearing any data that it holds. + */ + public void reset() { + isFilling = false; + length = 0; + sequenceExtensionPosition = 0; + } + + /** + * Called when a start code is encountered in the stream. + * + * @param startCodeValue The start code value. + * @param bytesAlreadyPassed The number of bytes of the start code that have been passed to + * {@link #onData(byte[], int, int)}, or 0. + * @return Whether the csd data is now complete. If true is returned, neither + * this method nor {@link #onData(byte[], int, int)} should be called again without an + * interleaving call to {@link #reset()}. + */ + public boolean onStartCode(int startCodeValue, int bytesAlreadyPassed) { + if (isFilling) { + length -= bytesAlreadyPassed; + if (sequenceExtensionPosition == 0 && startCodeValue == START_EXTENSION) { + sequenceExtensionPosition = length; + } else { + isFilling = false; + return true; + } + } else if (startCodeValue == START_SEQUENCE_HEADER) { + isFilling = true; + } + onData(START_CODE, 0, START_CODE.length); + return false; + } + + /** + * Called to pass stream data. + * + * @param newData Holds the data being passed. + * @param offset The offset of the data in {@code data}. + * @param limit The limit (exclusive) of the data in {@code data}. + */ + public void onData(byte[] newData, int offset, int limit) { + if (!isFilling) { + return; + } + int readLength = limit - offset; + if (data.length < length + readLength) { + data = Arrays.copyOf(data, (length + readLength) * 2); + } + System.arraycopy(newData, offset, data, length, readLength); + length += readLength; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/H264Reader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/H264Reader.java new file mode 100644 index 0000000000..164c115159 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/H264Reader.java @@ -0,0 +1,567 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.FLAG_RANDOM_ACCESS_INDICATOR; + +import android.util.SparseArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.CodecSpecificDataUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil.SpsData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableNalUnitBitArray; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; + +/** + * Parses a continuous H264 byte stream and extracts individual frames. + */ +public final class H264Reader implements ElementaryStreamReader { + + private static final int NAL_UNIT_TYPE_SEI = 6; // Supplemental enhancement information + private static final int NAL_UNIT_TYPE_SPS = 7; // Sequence parameter set + private static final int NAL_UNIT_TYPE_PPS = 8; // Picture parameter set + + private final SeiReader seiReader; + private final boolean allowNonIdrKeyframes; + private final boolean detectAccessUnits; + private final NalUnitTargetBuffer sps; + private final NalUnitTargetBuffer pps; + private final NalUnitTargetBuffer sei; + private long totalBytesWritten; + private final boolean[] prefixFlags; + + private String formatId; + private TrackOutput output; + private SampleReader sampleReader; + + // State that should not be reset on seek. + private boolean hasOutputFormat; + + // Per PES packet state that gets reset at the start of each PES packet. + private long pesTimeUs; + + // State inherited from the TS packet header. + private boolean randomAccessIndicator; + + // Scratch variables to avoid allocations. + private final ParsableByteArray seiWrapper; + + /** + * @param seiReader An SEI reader for consuming closed caption channels. + * @param allowNonIdrKeyframes Whether to treat samples consisting of non-IDR I slices as + * synchronization samples (key-frames). + * @param detectAccessUnits Whether to split the input stream into access units (samples) based on + * slice headers. Pass {@code false} if the stream contains access unit delimiters (AUDs). + */ + public H264Reader(SeiReader seiReader, boolean allowNonIdrKeyframes, boolean detectAccessUnits) { + this.seiReader = seiReader; + this.allowNonIdrKeyframes = allowNonIdrKeyframes; + this.detectAccessUnits = detectAccessUnits; + prefixFlags = new boolean[3]; + sps = new NalUnitTargetBuffer(NAL_UNIT_TYPE_SPS, 128); + pps = new NalUnitTargetBuffer(NAL_UNIT_TYPE_PPS, 128); + sei = new NalUnitTargetBuffer(NAL_UNIT_TYPE_SEI, 128); + seiWrapper = new ParsableByteArray(); + } + + @Override + public void seek() { + NalUnitUtil.clearPrefixFlags(prefixFlags); + sps.reset(); + pps.reset(); + sei.reset(); + sampleReader.reset(); + totalBytesWritten = 0; + randomAccessIndicator = false; + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) { + idGenerator.generateNewId(); + formatId = idGenerator.getFormatId(); + output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_VIDEO); + sampleReader = new SampleReader(output, allowNonIdrKeyframes, detectAccessUnits); + seiReader.createTracks(extractorOutput, idGenerator); + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + this.pesTimeUs = pesTimeUs; + randomAccessIndicator |= (flags & FLAG_RANDOM_ACCESS_INDICATOR) != 0; + } + + @Override + public void consume(ParsableByteArray data) { + int offset = data.getPosition(); + int limit = data.limit(); + byte[] dataArray = data.data; + + // Append the data to the buffer. + totalBytesWritten += data.bytesLeft(); + output.sampleData(data, data.bytesLeft()); + + // Scan the appended data, processing NAL units as they are encountered + while (true) { + int nalUnitOffset = NalUnitUtil.findNalUnit(dataArray, offset, limit, prefixFlags); + + if (nalUnitOffset == limit) { + // We've scanned to the end of the data without finding the start of another NAL unit. + nalUnitData(dataArray, offset, limit); + return; + } + + // We've seen the start of a NAL unit of the following type. + int nalUnitType = NalUnitUtil.getNalUnitType(dataArray, nalUnitOffset); + + // This is the number of bytes from the current offset to the start of the next NAL unit. + // It may be negative if the NAL unit started in the previously consumed data. + int lengthToNalUnit = nalUnitOffset - offset; + if (lengthToNalUnit > 0) { + nalUnitData(dataArray, offset, nalUnitOffset); + } + int bytesWrittenPastPosition = limit - nalUnitOffset; + long absolutePosition = totalBytesWritten - bytesWrittenPastPosition; + // Indicate the end of the previous NAL unit. If the length to the start of the next unit + // is negative then we wrote too many bytes to the NAL buffers. Discard the excess bytes + // when notifying that the unit has ended. + endNalUnit(absolutePosition, bytesWrittenPastPosition, + lengthToNalUnit < 0 ? -lengthToNalUnit : 0, pesTimeUs); + // Indicate the start of the next NAL unit. + startNalUnit(absolutePosition, nalUnitType, pesTimeUs); + // Continue scanning the data. + offset = nalUnitOffset + 3; + } + } + + @Override + public void packetFinished() { + // Do nothing. + } + + private void startNalUnit(long position, int nalUnitType, long pesTimeUs) { + if (!hasOutputFormat || sampleReader.needsSpsPps()) { + sps.startNalUnit(nalUnitType); + pps.startNalUnit(nalUnitType); + } + sei.startNalUnit(nalUnitType); + sampleReader.startNalUnit(position, nalUnitType, pesTimeUs); + } + + private void nalUnitData(byte[] dataArray, int offset, int limit) { + if (!hasOutputFormat || sampleReader.needsSpsPps()) { + sps.appendToNalUnit(dataArray, offset, limit); + pps.appendToNalUnit(dataArray, offset, limit); + } + sei.appendToNalUnit(dataArray, offset, limit); + sampleReader.appendToNalUnit(dataArray, offset, limit); + } + + private void endNalUnit(long position, int offset, int discardPadding, long pesTimeUs) { + if (!hasOutputFormat || sampleReader.needsSpsPps()) { + sps.endNalUnit(discardPadding); + pps.endNalUnit(discardPadding); + if (!hasOutputFormat) { + if (sps.isCompleted() && pps.isCompleted()) { + List initializationData = new ArrayList<>(); + initializationData.add(Arrays.copyOf(sps.nalData, sps.nalLength)); + initializationData.add(Arrays.copyOf(pps.nalData, pps.nalLength)); + NalUnitUtil.SpsData spsData = NalUnitUtil.parseSpsNalUnit(sps.nalData, 3, sps.nalLength); + NalUnitUtil.PpsData ppsData = NalUnitUtil.parsePpsNalUnit(pps.nalData, 3, pps.nalLength); + output.format( + Format.createVideoSampleFormat( + formatId, + MimeTypes.VIDEO_H264, + CodecSpecificDataUtil.buildAvcCodecString( + spsData.profileIdc, + spsData.constraintsFlagsAndReservedZero2Bits, + spsData.levelIdc), + /* bitrate= */ Format.NO_VALUE, + /* maxInputSize= */ Format.NO_VALUE, + spsData.width, + spsData.height, + /* frameRate= */ Format.NO_VALUE, + initializationData, + /* rotationDegrees= */ Format.NO_VALUE, + spsData.pixelWidthAspectRatio, + /* drmInitData= */ null)); + hasOutputFormat = true; + sampleReader.putSps(spsData); + sampleReader.putPps(ppsData); + sps.reset(); + pps.reset(); + } + } else if (sps.isCompleted()) { + NalUnitUtil.SpsData spsData = NalUnitUtil.parseSpsNalUnit(sps.nalData, 3, sps.nalLength); + sampleReader.putSps(spsData); + sps.reset(); + } else if (pps.isCompleted()) { + NalUnitUtil.PpsData ppsData = NalUnitUtil.parsePpsNalUnit(pps.nalData, 3, pps.nalLength); + sampleReader.putPps(ppsData); + pps.reset(); + } + } + if (sei.endNalUnit(discardPadding)) { + int unescapedLength = NalUnitUtil.unescapeStream(sei.nalData, sei.nalLength); + seiWrapper.reset(sei.nalData, unescapedLength); + seiWrapper.setPosition(4); // NAL prefix and nal_unit() header. + seiReader.consume(pesTimeUs, seiWrapper); + } + boolean sampleIsKeyFrame = + sampleReader.endNalUnit(position, offset, hasOutputFormat, randomAccessIndicator); + if (sampleIsKeyFrame) { + // This is either an IDR frame or the first I-frame since the random access indicator, so mark + // it as a keyframe. Clear the flag so that subsequent non-IDR I-frames are not marked as + // keyframes until we see another random access indicator. + randomAccessIndicator = false; + } + } + + /** Consumes a stream of NAL units and outputs samples. */ + private static final class SampleReader { + + private static final int DEFAULT_BUFFER_SIZE = 128; + + private static final int NAL_UNIT_TYPE_NON_IDR = 1; // Coded slice of a non-IDR picture + private static final int NAL_UNIT_TYPE_PARTITION_A = 2; // Coded slice data partition A + private static final int NAL_UNIT_TYPE_IDR = 5; // Coded slice of an IDR picture + private static final int NAL_UNIT_TYPE_AUD = 9; // Access unit delimiter + + private final TrackOutput output; + private final boolean allowNonIdrKeyframes; + private final boolean detectAccessUnits; + private final SparseArray sps; + private final SparseArray pps; + private final ParsableNalUnitBitArray bitArray; + + private byte[] buffer; + private int bufferLength; + + // Per NAL unit state. A sample consists of one or more NAL units. + private int nalUnitType; + private long nalUnitStartPosition; + private boolean isFilling; + private long nalUnitTimeUs; + private SliceHeaderData previousSliceHeader; + private SliceHeaderData sliceHeader; + + // Per sample state that gets reset at the start of each sample. + private boolean readingSample; + private long samplePosition; + private long sampleTimeUs; + private boolean sampleIsKeyframe; + + public SampleReader(TrackOutput output, boolean allowNonIdrKeyframes, + boolean detectAccessUnits) { + this.output = output; + this.allowNonIdrKeyframes = allowNonIdrKeyframes; + this.detectAccessUnits = detectAccessUnits; + sps = new SparseArray<>(); + pps = new SparseArray<>(); + previousSliceHeader = new SliceHeaderData(); + sliceHeader = new SliceHeaderData(); + buffer = new byte[DEFAULT_BUFFER_SIZE]; + bitArray = new ParsableNalUnitBitArray(buffer, 0, 0); + reset(); + } + + public boolean needsSpsPps() { + return detectAccessUnits; + } + + public void putSps(NalUnitUtil.SpsData spsData) { + sps.append(spsData.seqParameterSetId, spsData); + } + + public void putPps(NalUnitUtil.PpsData ppsData) { + pps.append(ppsData.picParameterSetId, ppsData); + } + + public void reset() { + isFilling = false; + readingSample = false; + sliceHeader.clear(); + } + + public void startNalUnit(long position, int type, long pesTimeUs) { + nalUnitType = type; + nalUnitTimeUs = pesTimeUs; + nalUnitStartPosition = position; + if ((allowNonIdrKeyframes && nalUnitType == NAL_UNIT_TYPE_NON_IDR) + || (detectAccessUnits && (nalUnitType == NAL_UNIT_TYPE_IDR + || nalUnitType == NAL_UNIT_TYPE_NON_IDR + || nalUnitType == NAL_UNIT_TYPE_PARTITION_A))) { + // Store the previous header and prepare to populate the new one. + SliceHeaderData newSliceHeader = previousSliceHeader; + previousSliceHeader = sliceHeader; + sliceHeader = newSliceHeader; + sliceHeader.clear(); + bufferLength = 0; + isFilling = true; + } + } + + /** + * Called to pass stream data. The data passed should not include the 3 byte start code. + * + * @param data Holds the data being passed. + * @param offset The offset of the data in {@code data}. + * @param limit The limit (exclusive) of the data in {@code data}. + */ + public void appendToNalUnit(byte[] data, int offset, int limit) { + if (!isFilling) { + return; + } + int readLength = limit - offset; + if (buffer.length < bufferLength + readLength) { + buffer = Arrays.copyOf(buffer, (bufferLength + readLength) * 2); + } + System.arraycopy(data, offset, buffer, bufferLength, readLength); + bufferLength += readLength; + + bitArray.reset(buffer, 0, bufferLength); + if (!bitArray.canReadBits(8)) { + return; + } + bitArray.skipBit(); // forbidden_zero_bit + int nalRefIdc = bitArray.readBits(2); + bitArray.skipBits(5); // nal_unit_type + + // Read the slice header using the syntax defined in ITU-T Recommendation H.264 (2013) + // subsection 7.3.3. + if (!bitArray.canReadExpGolombCodedNum()) { + return; + } + bitArray.readUnsignedExpGolombCodedInt(); // first_mb_in_slice + if (!bitArray.canReadExpGolombCodedNum()) { + return; + } + int sliceType = bitArray.readUnsignedExpGolombCodedInt(); + if (!detectAccessUnits) { + // There are AUDs in the stream so the rest of the header can be ignored. + isFilling = false; + sliceHeader.setSliceType(sliceType); + return; + } + if (!bitArray.canReadExpGolombCodedNum()) { + return; + } + int picParameterSetId = bitArray.readUnsignedExpGolombCodedInt(); + if (pps.indexOfKey(picParameterSetId) < 0) { + // We have not seen the PPS yet, so don't try to decode the slice header. + isFilling = false; + return; + } + NalUnitUtil.PpsData ppsData = pps.get(picParameterSetId); + NalUnitUtil.SpsData spsData = sps.get(ppsData.seqParameterSetId); + if (spsData.separateColorPlaneFlag) { + if (!bitArray.canReadBits(2)) { + return; + } + bitArray.skipBits(2); // colour_plane_id + } + if (!bitArray.canReadBits(spsData.frameNumLength)) { + return; + } + boolean fieldPicFlag = false; + boolean bottomFieldFlagPresent = false; + boolean bottomFieldFlag = false; + int frameNum = bitArray.readBits(spsData.frameNumLength); + if (!spsData.frameMbsOnlyFlag) { + if (!bitArray.canReadBits(1)) { + return; + } + fieldPicFlag = bitArray.readBit(); + if (fieldPicFlag) { + if (!bitArray.canReadBits(1)) { + return; + } + bottomFieldFlag = bitArray.readBit(); + bottomFieldFlagPresent = true; + } + } + boolean idrPicFlag = nalUnitType == NAL_UNIT_TYPE_IDR; + int idrPicId = 0; + if (idrPicFlag) { + if (!bitArray.canReadExpGolombCodedNum()) { + return; + } + idrPicId = bitArray.readUnsignedExpGolombCodedInt(); + } + int picOrderCntLsb = 0; + int deltaPicOrderCntBottom = 0; + int deltaPicOrderCnt0 = 0; + int deltaPicOrderCnt1 = 0; + if (spsData.picOrderCountType == 0) { + if (!bitArray.canReadBits(spsData.picOrderCntLsbLength)) { + return; + } + picOrderCntLsb = bitArray.readBits(spsData.picOrderCntLsbLength); + if (ppsData.bottomFieldPicOrderInFramePresentFlag && !fieldPicFlag) { + if (!bitArray.canReadExpGolombCodedNum()) { + return; + } + deltaPicOrderCntBottom = bitArray.readSignedExpGolombCodedInt(); + } + } else if (spsData.picOrderCountType == 1 + && !spsData.deltaPicOrderAlwaysZeroFlag) { + if (!bitArray.canReadExpGolombCodedNum()) { + return; + } + deltaPicOrderCnt0 = bitArray.readSignedExpGolombCodedInt(); + if (ppsData.bottomFieldPicOrderInFramePresentFlag && !fieldPicFlag) { + if (!bitArray.canReadExpGolombCodedNum()) { + return; + } + deltaPicOrderCnt1 = bitArray.readSignedExpGolombCodedInt(); + } + } + sliceHeader.setAll(spsData, nalRefIdc, sliceType, frameNum, picParameterSetId, fieldPicFlag, + bottomFieldFlagPresent, bottomFieldFlag, idrPicFlag, idrPicId, picOrderCntLsb, + deltaPicOrderCntBottom, deltaPicOrderCnt0, deltaPicOrderCnt1); + isFilling = false; + } + + public boolean endNalUnit( + long position, int offset, boolean hasOutputFormat, boolean randomAccessIndicator) { + if (nalUnitType == NAL_UNIT_TYPE_AUD + || (detectAccessUnits && sliceHeader.isFirstVclNalUnitOfPicture(previousSliceHeader))) { + // If the NAL unit ending is the start of a new sample, output the previous one. + if (hasOutputFormat && readingSample) { + int nalUnitLength = (int) (position - nalUnitStartPosition); + outputSample(offset + nalUnitLength); + } + samplePosition = nalUnitStartPosition; + sampleTimeUs = nalUnitTimeUs; + sampleIsKeyframe = false; + readingSample = true; + } + boolean treatIFrameAsKeyframe = + allowNonIdrKeyframes ? sliceHeader.isISlice() : randomAccessIndicator; + sampleIsKeyframe |= + nalUnitType == NAL_UNIT_TYPE_IDR + || (treatIFrameAsKeyframe && nalUnitType == NAL_UNIT_TYPE_NON_IDR); + return sampleIsKeyframe; + } + + private void outputSample(int offset) { + @C.BufferFlags int flags = sampleIsKeyframe ? C.BUFFER_FLAG_KEY_FRAME : 0; + int size = (int) (nalUnitStartPosition - samplePosition); + output.sampleMetadata(sampleTimeUs, flags, size, offset, null); + } + + private static final class SliceHeaderData { + + private static final int SLICE_TYPE_I = 2; + private static final int SLICE_TYPE_ALL_I = 7; + + private boolean isComplete; + private boolean hasSliceType; + + private SpsData spsData; + private int nalRefIdc; + private int sliceType; + private int frameNum; + private int picParameterSetId; + private boolean fieldPicFlag; + private boolean bottomFieldFlagPresent; + private boolean bottomFieldFlag; + private boolean idrPicFlag; + private int idrPicId; + private int picOrderCntLsb; + private int deltaPicOrderCntBottom; + private int deltaPicOrderCnt0; + private int deltaPicOrderCnt1; + + public void clear() { + hasSliceType = false; + isComplete = false; + } + + public void setSliceType(int sliceType) { + this.sliceType = sliceType; + hasSliceType = true; + } + + public void setAll( + SpsData spsData, + int nalRefIdc, + int sliceType, + int frameNum, + int picParameterSetId, + boolean fieldPicFlag, + boolean bottomFieldFlagPresent, + boolean bottomFieldFlag, + boolean idrPicFlag, + int idrPicId, + int picOrderCntLsb, + int deltaPicOrderCntBottom, + int deltaPicOrderCnt0, + int deltaPicOrderCnt1) { + this.spsData = spsData; + this.nalRefIdc = nalRefIdc; + this.sliceType = sliceType; + this.frameNum = frameNum; + this.picParameterSetId = picParameterSetId; + this.fieldPicFlag = fieldPicFlag; + this.bottomFieldFlagPresent = bottomFieldFlagPresent; + this.bottomFieldFlag = bottomFieldFlag; + this.idrPicFlag = idrPicFlag; + this.idrPicId = idrPicId; + this.picOrderCntLsb = picOrderCntLsb; + this.deltaPicOrderCntBottom = deltaPicOrderCntBottom; + this.deltaPicOrderCnt0 = deltaPicOrderCnt0; + this.deltaPicOrderCnt1 = deltaPicOrderCnt1; + isComplete = true; + hasSliceType = true; + } + + public boolean isISlice() { + return hasSliceType && (sliceType == SLICE_TYPE_ALL_I || sliceType == SLICE_TYPE_I); + } + + private boolean isFirstVclNalUnitOfPicture(SliceHeaderData other) { + // See ISO 14496-10 subsection 7.4.1.2.4. + return isComplete + && (!other.isComplete + || frameNum != other.frameNum + || picParameterSetId != other.picParameterSetId + || fieldPicFlag != other.fieldPicFlag + || (bottomFieldFlagPresent + && other.bottomFieldFlagPresent + && bottomFieldFlag != other.bottomFieldFlag) + || (nalRefIdc != other.nalRefIdc && (nalRefIdc == 0 || other.nalRefIdc == 0)) + || (spsData.picOrderCountType == 0 + && other.spsData.picOrderCountType == 0 + && (picOrderCntLsb != other.picOrderCntLsb + || deltaPicOrderCntBottom != other.deltaPicOrderCntBottom)) + || (spsData.picOrderCountType == 1 + && other.spsData.picOrderCountType == 1 + && (deltaPicOrderCnt0 != other.deltaPicOrderCnt0 + || deltaPicOrderCnt1 != other.deltaPicOrderCnt1)) + || idrPicFlag != other.idrPicFlag + || (idrPicFlag && other.idrPicFlag && idrPicId != other.idrPicId)); + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/H265Reader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/H265Reader.java new file mode 100644 index 0000000000..6aa7c5d71d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/H265Reader.java @@ -0,0 +1,494 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableNalUnitBitArray; +import java.util.Collections; + +/** + * Parses a continuous H.265 byte stream and extracts individual frames. + */ +public final class H265Reader implements ElementaryStreamReader { + + private static final String TAG = "H265Reader"; + + // nal_unit_type values from H.265/HEVC (2014) Table 7-1. + private static final int RASL_R = 9; + private static final int BLA_W_LP = 16; + private static final int CRA_NUT = 21; + private static final int VPS_NUT = 32; + private static final int SPS_NUT = 33; + private static final int PPS_NUT = 34; + private static final int PREFIX_SEI_NUT = 39; + private static final int SUFFIX_SEI_NUT = 40; + + private final SeiReader seiReader; + + private String formatId; + private TrackOutput output; + private SampleReader sampleReader; + + // State that should not be reset on seek. + private boolean hasOutputFormat; + + // State that should be reset on seek. + private final boolean[] prefixFlags; + private final NalUnitTargetBuffer vps; + private final NalUnitTargetBuffer sps; + private final NalUnitTargetBuffer pps; + private final NalUnitTargetBuffer prefixSei; + private final NalUnitTargetBuffer suffixSei; // TODO: Are both needed? + private long totalBytesWritten; + + // Per packet state that gets reset at the start of each packet. + private long pesTimeUs; + + // Scratch variables to avoid allocations. + private final ParsableByteArray seiWrapper; + + /** + * @param seiReader An SEI reader for consuming closed caption channels. + */ + public H265Reader(SeiReader seiReader) { + this.seiReader = seiReader; + prefixFlags = new boolean[3]; + vps = new NalUnitTargetBuffer(VPS_NUT, 128); + sps = new NalUnitTargetBuffer(SPS_NUT, 128); + pps = new NalUnitTargetBuffer(PPS_NUT, 128); + prefixSei = new NalUnitTargetBuffer(PREFIX_SEI_NUT, 128); + suffixSei = new NalUnitTargetBuffer(SUFFIX_SEI_NUT, 128); + seiWrapper = new ParsableByteArray(); + } + + @Override + public void seek() { + NalUnitUtil.clearPrefixFlags(prefixFlags); + vps.reset(); + sps.reset(); + pps.reset(); + prefixSei.reset(); + suffixSei.reset(); + sampleReader.reset(); + totalBytesWritten = 0; + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) { + idGenerator.generateNewId(); + formatId = idGenerator.getFormatId(); + output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_VIDEO); + sampleReader = new SampleReader(output); + seiReader.createTracks(extractorOutput, idGenerator); + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + // TODO (Internal b/32267012): Consider using random access indicator. + this.pesTimeUs = pesTimeUs; + } + + @Override + public void consume(ParsableByteArray data) { + while (data.bytesLeft() > 0) { + int offset = data.getPosition(); + int limit = data.limit(); + byte[] dataArray = data.data; + + // Append the data to the buffer. + totalBytesWritten += data.bytesLeft(); + output.sampleData(data, data.bytesLeft()); + + // Scan the appended data, processing NAL units as they are encountered + while (offset < limit) { + int nalUnitOffset = NalUnitUtil.findNalUnit(dataArray, offset, limit, prefixFlags); + + if (nalUnitOffset == limit) { + // We've scanned to the end of the data without finding the start of another NAL unit. + nalUnitData(dataArray, offset, limit); + return; + } + + // We've seen the start of a NAL unit of the following type. + int nalUnitType = NalUnitUtil.getH265NalUnitType(dataArray, nalUnitOffset); + + // This is the number of bytes from the current offset to the start of the next NAL unit. + // It may be negative if the NAL unit started in the previously consumed data. + int lengthToNalUnit = nalUnitOffset - offset; + if (lengthToNalUnit > 0) { + nalUnitData(dataArray, offset, nalUnitOffset); + } + + int bytesWrittenPastPosition = limit - nalUnitOffset; + long absolutePosition = totalBytesWritten - bytesWrittenPastPosition; + // Indicate the end of the previous NAL unit. If the length to the start of the next unit + // is negative then we wrote too many bytes to the NAL buffers. Discard the excess bytes + // when notifying that the unit has ended. + endNalUnit(absolutePosition, bytesWrittenPastPosition, + lengthToNalUnit < 0 ? -lengthToNalUnit : 0, pesTimeUs); + // Indicate the start of the next NAL unit. + startNalUnit(absolutePosition, bytesWrittenPastPosition, nalUnitType, pesTimeUs); + // Continue scanning the data. + offset = nalUnitOffset + 3; + } + } + } + + @Override + public void packetFinished() { + // Do nothing. + } + + private void startNalUnit(long position, int offset, int nalUnitType, long pesTimeUs) { + if (hasOutputFormat) { + sampleReader.startNalUnit(position, offset, nalUnitType, pesTimeUs); + } else { + vps.startNalUnit(nalUnitType); + sps.startNalUnit(nalUnitType); + pps.startNalUnit(nalUnitType); + } + prefixSei.startNalUnit(nalUnitType); + suffixSei.startNalUnit(nalUnitType); + } + + private void nalUnitData(byte[] dataArray, int offset, int limit) { + if (hasOutputFormat) { + sampleReader.readNalUnitData(dataArray, offset, limit); + } else { + vps.appendToNalUnit(dataArray, offset, limit); + sps.appendToNalUnit(dataArray, offset, limit); + pps.appendToNalUnit(dataArray, offset, limit); + } + prefixSei.appendToNalUnit(dataArray, offset, limit); + suffixSei.appendToNalUnit(dataArray, offset, limit); + } + + private void endNalUnit(long position, int offset, int discardPadding, long pesTimeUs) { + if (hasOutputFormat) { + sampleReader.endNalUnit(position, offset); + } else { + vps.endNalUnit(discardPadding); + sps.endNalUnit(discardPadding); + pps.endNalUnit(discardPadding); + if (vps.isCompleted() && sps.isCompleted() && pps.isCompleted()) { + output.format(parseMediaFormat(formatId, vps, sps, pps)); + hasOutputFormat = true; + } + } + if (prefixSei.endNalUnit(discardPadding)) { + int unescapedLength = NalUnitUtil.unescapeStream(prefixSei.nalData, prefixSei.nalLength); + seiWrapper.reset(prefixSei.nalData, unescapedLength); + + // Skip the NAL prefix and type. + seiWrapper.skipBytes(5); + seiReader.consume(pesTimeUs, seiWrapper); + } + if (suffixSei.endNalUnit(discardPadding)) { + int unescapedLength = NalUnitUtil.unescapeStream(suffixSei.nalData, suffixSei.nalLength); + seiWrapper.reset(suffixSei.nalData, unescapedLength); + + // Skip the NAL prefix and type. + seiWrapper.skipBytes(5); + seiReader.consume(pesTimeUs, seiWrapper); + } + } + + private static Format parseMediaFormat(String formatId, NalUnitTargetBuffer vps, + NalUnitTargetBuffer sps, NalUnitTargetBuffer pps) { + // Build codec-specific data. + byte[] csd = new byte[vps.nalLength + sps.nalLength + pps.nalLength]; + System.arraycopy(vps.nalData, 0, csd, 0, vps.nalLength); + System.arraycopy(sps.nalData, 0, csd, vps.nalLength, sps.nalLength); + System.arraycopy(pps.nalData, 0, csd, vps.nalLength + sps.nalLength, pps.nalLength); + + // Parse the SPS NAL unit, as per H.265/HEVC (2014) 7.3.2.2.1. + ParsableNalUnitBitArray bitArray = new ParsableNalUnitBitArray(sps.nalData, 0, sps.nalLength); + bitArray.skipBits(40 + 4); // NAL header, sps_video_parameter_set_id + int maxSubLayersMinus1 = bitArray.readBits(3); + bitArray.skipBit(); // sps_temporal_id_nesting_flag + + // profile_tier_level(1, sps_max_sub_layers_minus1) + bitArray.skipBits(88); // if (profilePresentFlag) {...} + bitArray.skipBits(8); // general_level_idc + int toSkip = 0; + for (int i = 0; i < maxSubLayersMinus1; i++) { + if (bitArray.readBit()) { // sub_layer_profile_present_flag[i] + toSkip += 89; + } + if (bitArray.readBit()) { // sub_layer_level_present_flag[i] + toSkip += 8; + } + } + bitArray.skipBits(toSkip); + if (maxSubLayersMinus1 > 0) { + bitArray.skipBits(2 * (8 - maxSubLayersMinus1)); + } + + bitArray.readUnsignedExpGolombCodedInt(); // sps_seq_parameter_set_id + int chromaFormatIdc = bitArray.readUnsignedExpGolombCodedInt(); + if (chromaFormatIdc == 3) { + bitArray.skipBit(); // separate_colour_plane_flag + } + int picWidthInLumaSamples = bitArray.readUnsignedExpGolombCodedInt(); + int picHeightInLumaSamples = bitArray.readUnsignedExpGolombCodedInt(); + if (bitArray.readBit()) { // conformance_window_flag + int confWinLeftOffset = bitArray.readUnsignedExpGolombCodedInt(); + int confWinRightOffset = bitArray.readUnsignedExpGolombCodedInt(); + int confWinTopOffset = bitArray.readUnsignedExpGolombCodedInt(); + int confWinBottomOffset = bitArray.readUnsignedExpGolombCodedInt(); + // H.265/HEVC (2014) Table 6-1 + int subWidthC = chromaFormatIdc == 1 || chromaFormatIdc == 2 ? 2 : 1; + int subHeightC = chromaFormatIdc == 1 ? 2 : 1; + picWidthInLumaSamples -= subWidthC * (confWinLeftOffset + confWinRightOffset); + picHeightInLumaSamples -= subHeightC * (confWinTopOffset + confWinBottomOffset); + } + bitArray.readUnsignedExpGolombCodedInt(); // bit_depth_luma_minus8 + bitArray.readUnsignedExpGolombCodedInt(); // bit_depth_chroma_minus8 + int log2MaxPicOrderCntLsbMinus4 = bitArray.readUnsignedExpGolombCodedInt(); + // for (i = sps_sub_layer_ordering_info_present_flag ? 0 : sps_max_sub_layers_minus1; ...) + for (int i = bitArray.readBit() ? 0 : maxSubLayersMinus1; i <= maxSubLayersMinus1; i++) { + bitArray.readUnsignedExpGolombCodedInt(); // sps_max_dec_pic_buffering_minus1[i] + bitArray.readUnsignedExpGolombCodedInt(); // sps_max_num_reorder_pics[i] + bitArray.readUnsignedExpGolombCodedInt(); // sps_max_latency_increase_plus1[i] + } + bitArray.readUnsignedExpGolombCodedInt(); // log2_min_luma_coding_block_size_minus3 + bitArray.readUnsignedExpGolombCodedInt(); // log2_diff_max_min_luma_coding_block_size + bitArray.readUnsignedExpGolombCodedInt(); // log2_min_luma_transform_block_size_minus2 + bitArray.readUnsignedExpGolombCodedInt(); // log2_diff_max_min_luma_transform_block_size + bitArray.readUnsignedExpGolombCodedInt(); // max_transform_hierarchy_depth_inter + bitArray.readUnsignedExpGolombCodedInt(); // max_transform_hierarchy_depth_intra + // if (scaling_list_enabled_flag) { if (sps_scaling_list_data_present_flag) {...}} + boolean scalingListEnabled = bitArray.readBit(); + if (scalingListEnabled && bitArray.readBit()) { + skipScalingList(bitArray); + } + bitArray.skipBits(2); // amp_enabled_flag (1), sample_adaptive_offset_enabled_flag (1) + if (bitArray.readBit()) { // pcm_enabled_flag + // pcm_sample_bit_depth_luma_minus1 (4), pcm_sample_bit_depth_chroma_minus1 (4) + bitArray.skipBits(8); + bitArray.readUnsignedExpGolombCodedInt(); // log2_min_pcm_luma_coding_block_size_minus3 + bitArray.readUnsignedExpGolombCodedInt(); // log2_diff_max_min_pcm_luma_coding_block_size + bitArray.skipBit(); // pcm_loop_filter_disabled_flag + } + // Skips all short term reference picture sets. + skipShortTermRefPicSets(bitArray); + if (bitArray.readBit()) { // long_term_ref_pics_present_flag + // num_long_term_ref_pics_sps + for (int i = 0; i < bitArray.readUnsignedExpGolombCodedInt(); i++) { + int ltRefPicPocLsbSpsLength = log2MaxPicOrderCntLsbMinus4 + 4; + // lt_ref_pic_poc_lsb_sps[i], used_by_curr_pic_lt_sps_flag[i] + bitArray.skipBits(ltRefPicPocLsbSpsLength + 1); + } + } + bitArray.skipBits(2); // sps_temporal_mvp_enabled_flag, strong_intra_smoothing_enabled_flag + float pixelWidthHeightRatio = 1; + if (bitArray.readBit()) { // vui_parameters_present_flag + if (bitArray.readBit()) { // aspect_ratio_info_present_flag + int aspectRatioIdc = bitArray.readBits(8); + if (aspectRatioIdc == NalUnitUtil.EXTENDED_SAR) { + int sarWidth = bitArray.readBits(16); + int sarHeight = bitArray.readBits(16); + if (sarWidth != 0 && sarHeight != 0) { + pixelWidthHeightRatio = (float) sarWidth / sarHeight; + } + } else if (aspectRatioIdc < NalUnitUtil.ASPECT_RATIO_IDC_VALUES.length) { + pixelWidthHeightRatio = NalUnitUtil.ASPECT_RATIO_IDC_VALUES[aspectRatioIdc]; + } else { + Log.w(TAG, "Unexpected aspect_ratio_idc value: " + aspectRatioIdc); + } + } + } + + return Format.createVideoSampleFormat(formatId, MimeTypes.VIDEO_H265, null, Format.NO_VALUE, + Format.NO_VALUE, picWidthInLumaSamples, picHeightInLumaSamples, Format.NO_VALUE, + Collections.singletonList(csd), Format.NO_VALUE, pixelWidthHeightRatio, null); + } + + /** + * Skips scaling_list_data(). See H.265/HEVC (2014) 7.3.4. + */ + private static void skipScalingList(ParsableNalUnitBitArray bitArray) { + for (int sizeId = 0; sizeId < 4; sizeId++) { + for (int matrixId = 0; matrixId < 6; matrixId += sizeId == 3 ? 3 : 1) { + if (!bitArray.readBit()) { // scaling_list_pred_mode_flag[sizeId][matrixId] + // scaling_list_pred_matrix_id_delta[sizeId][matrixId] + bitArray.readUnsignedExpGolombCodedInt(); + } else { + int coefNum = Math.min(64, 1 << (4 + (sizeId << 1))); + if (sizeId > 1) { + // scaling_list_dc_coef_minus8[sizeId - 2][matrixId] + bitArray.readSignedExpGolombCodedInt(); + } + for (int i = 0; i < coefNum; i++) { + bitArray.readSignedExpGolombCodedInt(); // scaling_list_delta_coef + } + } + } + } + } + + /** + * Reads the number of short term reference picture sets in a SPS as ue(v), then skips all of + * them. See H.265/HEVC (2014) 7.3.7. + */ + private static void skipShortTermRefPicSets(ParsableNalUnitBitArray bitArray) { + int numShortTermRefPicSets = bitArray.readUnsignedExpGolombCodedInt(); + boolean interRefPicSetPredictionFlag = false; + int numNegativePics; + int numPositivePics; + // As this method applies in a SPS, the only element of NumDeltaPocs accessed is the previous + // one, so we just keep track of that rather than storing the whole array. + // RefRpsIdx = stRpsIdx - (delta_idx_minus1 + 1) and delta_idx_minus1 is always zero in SPS. + int previousNumDeltaPocs = 0; + for (int stRpsIdx = 0; stRpsIdx < numShortTermRefPicSets; stRpsIdx++) { + if (stRpsIdx != 0) { + interRefPicSetPredictionFlag = bitArray.readBit(); + } + if (interRefPicSetPredictionFlag) { + bitArray.skipBit(); // delta_rps_sign + bitArray.readUnsignedExpGolombCodedInt(); // abs_delta_rps_minus1 + for (int j = 0; j <= previousNumDeltaPocs; j++) { + if (bitArray.readBit()) { // used_by_curr_pic_flag[j] + bitArray.skipBit(); // use_delta_flag[j] + } + } + } else { + numNegativePics = bitArray.readUnsignedExpGolombCodedInt(); + numPositivePics = bitArray.readUnsignedExpGolombCodedInt(); + previousNumDeltaPocs = numNegativePics + numPositivePics; + for (int i = 0; i < numNegativePics; i++) { + bitArray.readUnsignedExpGolombCodedInt(); // delta_poc_s0_minus1[i] + bitArray.skipBit(); // used_by_curr_pic_s0_flag[i] + } + for (int i = 0; i < numPositivePics; i++) { + bitArray.readUnsignedExpGolombCodedInt(); // delta_poc_s1_minus1[i] + bitArray.skipBit(); // used_by_curr_pic_s1_flag[i] + } + } + } + } + + private static final class SampleReader { + + /** + * Offset in bytes of the first_slice_segment_in_pic_flag in a NAL unit containing a + * slice_segment_layer_rbsp. + */ + private static final int FIRST_SLICE_FLAG_OFFSET = 2; + + private final TrackOutput output; + + // Per NAL unit state. A sample consists of one or more NAL units. + private long nalUnitStartPosition; + private boolean nalUnitHasKeyframeData; + private int nalUnitBytesRead; + private long nalUnitTimeUs; + private boolean lookingForFirstSliceFlag; + private boolean isFirstSlice; + private boolean isFirstParameterSet; + + // Per sample state that gets reset at the start of each sample. + private boolean readingSample; + private boolean writingParameterSets; + private long samplePosition; + private long sampleTimeUs; + private boolean sampleIsKeyframe; + + public SampleReader(TrackOutput output) { + this.output = output; + } + + public void reset() { + lookingForFirstSliceFlag = false; + isFirstSlice = false; + isFirstParameterSet = false; + readingSample = false; + writingParameterSets = false; + } + + public void startNalUnit(long position, int offset, int nalUnitType, long pesTimeUs) { + isFirstSlice = false; + isFirstParameterSet = false; + nalUnitTimeUs = pesTimeUs; + nalUnitBytesRead = 0; + nalUnitStartPosition = position; + + if (nalUnitType >= VPS_NUT) { + if (!writingParameterSets && readingSample) { + // This is a non-VCL NAL unit, so flush the previous sample. + outputSample(offset); + readingSample = false; + } + if (nalUnitType <= PPS_NUT) { + // This sample will have parameter sets at the start. + isFirstParameterSet = !writingParameterSets; + writingParameterSets = true; + } + } + + // Look for the flag if this NAL unit contains a slice_segment_layer_rbsp. + nalUnitHasKeyframeData = (nalUnitType >= BLA_W_LP && nalUnitType <= CRA_NUT); + lookingForFirstSliceFlag = nalUnitHasKeyframeData || nalUnitType <= RASL_R; + } + + public void readNalUnitData(byte[] data, int offset, int limit) { + if (lookingForFirstSliceFlag) { + int headerOffset = offset + FIRST_SLICE_FLAG_OFFSET - nalUnitBytesRead; + if (headerOffset < limit) { + isFirstSlice = (data[headerOffset] & 0x80) != 0; + lookingForFirstSliceFlag = false; + } else { + nalUnitBytesRead += limit - offset; + } + } + } + + public void endNalUnit(long position, int offset) { + if (writingParameterSets && isFirstSlice) { + // This sample has parameter sets. Reset the key-frame flag based on the first slice. + sampleIsKeyframe = nalUnitHasKeyframeData; + writingParameterSets = false; + } else if (isFirstParameterSet || isFirstSlice) { + // This NAL unit is at the start of a new sample (access unit). + if (readingSample) { + // Output the sample ending before this NAL unit. + int nalUnitLength = (int) (position - nalUnitStartPosition); + outputSample(offset + nalUnitLength); + } + samplePosition = nalUnitStartPosition; + sampleTimeUs = nalUnitTimeUs; + readingSample = true; + sampleIsKeyframe = nalUnitHasKeyframeData; + } + } + + private void outputSample(int offset) { + @C.BufferFlags int flags = sampleIsKeyframe ? C.BUFFER_FLAG_KEY_FRAME : 0; + int size = (int) (nalUnitStartPosition - samplePosition); + output.sampleMetadata(sampleTimeUs, flags, size, offset, null); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Id3Reader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Id3Reader.java new file mode 100644 index 0000000000..da63e143c2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/Id3Reader.java @@ -0,0 +1,116 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.FLAG_DATA_ALIGNMENT_INDICATOR; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder.ID3_HEADER_LENGTH; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; + +/** + * Parses ID3 data and extracts individual text information frames. + */ +public final class Id3Reader implements ElementaryStreamReader { + + private static final String TAG = "Id3Reader"; + + private final ParsableByteArray id3Header; + + private TrackOutput output; + + // State that should be reset on seek. + private boolean writingSample; + + // Per sample state that gets reset at the start of each sample. + private long sampleTimeUs; + private int sampleSize; + private int sampleBytesRead; + + public Id3Reader() { + id3Header = new ParsableByteArray(ID3_HEADER_LENGTH); + } + + @Override + public void seek() { + writingSample = false; + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) { + idGenerator.generateNewId(); + output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_METADATA); + output.format(Format.createSampleFormat(idGenerator.getFormatId(), MimeTypes.APPLICATION_ID3, + null, Format.NO_VALUE, null)); + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + if ((flags & FLAG_DATA_ALIGNMENT_INDICATOR) == 0) { + return; + } + writingSample = true; + sampleTimeUs = pesTimeUs; + sampleSize = 0; + sampleBytesRead = 0; + } + + @Override + public void consume(ParsableByteArray data) { + if (!writingSample) { + return; + } + int bytesAvailable = data.bytesLeft(); + if (sampleBytesRead < ID3_HEADER_LENGTH) { + // We're still reading the ID3 header. + int headerBytesAvailable = Math.min(bytesAvailable, ID3_HEADER_LENGTH - sampleBytesRead); + System.arraycopy(data.data, data.getPosition(), id3Header.data, sampleBytesRead, + headerBytesAvailable); + if (sampleBytesRead + headerBytesAvailable == ID3_HEADER_LENGTH) { + // We've finished reading the ID3 header. Extract the sample size. + id3Header.setPosition(0); + if ('I' != id3Header.readUnsignedByte() || 'D' != id3Header.readUnsignedByte() + || '3' != id3Header.readUnsignedByte()) { + Log.w(TAG, "Discarding invalid ID3 tag"); + writingSample = false; + return; + } + id3Header.skipBytes(3); // version (2) + flags (1) + sampleSize = ID3_HEADER_LENGTH + id3Header.readSynchSafeInt(); + } + } + // Write data to the output. + int bytesToWrite = Math.min(bytesAvailable, sampleSize - sampleBytesRead); + output.sampleData(data, bytesToWrite); + sampleBytesRead += bytesToWrite; + } + + @Override + public void packetFinished() { + if (!writingSample || sampleSize == 0 || sampleBytesRead != sampleSize) { + return; + } + output.sampleMetadata(sampleTimeUs, C.BUFFER_FLAG_KEY_FRAME, sampleSize, 0, null); + writingSample = false; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/LatmReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/LatmReader.java new file mode 100644 index 0000000000..1a41adfa69 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/LatmReader.java @@ -0,0 +1,310 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.CodecSpecificDataUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.Collections; + +/** + * Parses and extracts samples from an AAC/LATM elementary stream. + */ +public final class LatmReader implements ElementaryStreamReader { + + private static final int STATE_FINDING_SYNC_1 = 0; + private static final int STATE_FINDING_SYNC_2 = 1; + private static final int STATE_READING_HEADER = 2; + private static final int STATE_READING_SAMPLE = 3; + + private static final int INITIAL_BUFFER_SIZE = 1024; + private static final int SYNC_BYTE_FIRST = 0x56; + private static final int SYNC_BYTE_SECOND = 0xE0; + + private final String language; + private final ParsableByteArray sampleDataBuffer; + private final ParsableBitArray sampleBitArray; + + // Track output info. + private TrackOutput output; + private Format format; + private String formatId; + + // Parser state info. + private int state; + private int bytesRead; + private int sampleSize; + private int secondHeaderByte; + private long timeUs; + + // Container data. + private boolean streamMuxRead; + private int audioMuxVersionA; + private int numSubframes; + private int frameLengthType; + private boolean otherDataPresent; + private long otherDataLenBits; + private int sampleRateHz; + private long sampleDurationUs; + private int channelCount; + + /** + * @param language Track language. + */ + public LatmReader(@Nullable String language) { + this.language = language; + sampleDataBuffer = new ParsableByteArray(INITIAL_BUFFER_SIZE); + sampleBitArray = new ParsableBitArray(sampleDataBuffer.data); + } + + @Override + public void seek() { + state = STATE_FINDING_SYNC_1; + streamMuxRead = false; + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) { + idGenerator.generateNewId(); + output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_AUDIO); + formatId = idGenerator.getFormatId(); + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + timeUs = pesTimeUs; + } + + @Override + public void consume(ParsableByteArray data) throws ParserException { + int bytesToRead; + while (data.bytesLeft() > 0) { + switch (state) { + case STATE_FINDING_SYNC_1: + if (data.readUnsignedByte() == SYNC_BYTE_FIRST) { + state = STATE_FINDING_SYNC_2; + } + break; + case STATE_FINDING_SYNC_2: + int secondByte = data.readUnsignedByte(); + if ((secondByte & SYNC_BYTE_SECOND) == SYNC_BYTE_SECOND) { + secondHeaderByte = secondByte; + state = STATE_READING_HEADER; + } else if (secondByte != SYNC_BYTE_FIRST) { + state = STATE_FINDING_SYNC_1; + } + break; + case STATE_READING_HEADER: + sampleSize = ((secondHeaderByte & ~SYNC_BYTE_SECOND) << 8) | data.readUnsignedByte(); + if (sampleSize > sampleDataBuffer.data.length) { + resetBufferForSize(sampleSize); + } + bytesRead = 0; + state = STATE_READING_SAMPLE; + break; + case STATE_READING_SAMPLE: + bytesToRead = Math.min(data.bytesLeft(), sampleSize - bytesRead); + data.readBytes(sampleBitArray.data, bytesRead, bytesToRead); + bytesRead += bytesToRead; + if (bytesRead == sampleSize) { + sampleBitArray.setPosition(0); + parseAudioMuxElement(sampleBitArray); + state = STATE_FINDING_SYNC_1; + } + break; + default: + throw new IllegalStateException(); + } + } + } + + @Override + public void packetFinished() { + // Do nothing. + } + + /** + * Parses an AudioMuxElement as defined in 14496-3:2009, Section 1.7.3.1, Table 1.41. + * + * @param data A {@link ParsableBitArray} containing the AudioMuxElement's bytes. + */ + private void parseAudioMuxElement(ParsableBitArray data) throws ParserException { + boolean useSameStreamMux = data.readBit(); + if (!useSameStreamMux) { + streamMuxRead = true; + parseStreamMuxConfig(data); + } else if (!streamMuxRead) { + return; // Parsing cannot continue without StreamMuxConfig information. + } + + if (audioMuxVersionA == 0) { + if (numSubframes != 0) { + throw new ParserException(); + } + int muxSlotLengthBytes = parsePayloadLengthInfo(data); + parsePayloadMux(data, muxSlotLengthBytes); + if (otherDataPresent) { + data.skipBits((int) otherDataLenBits); + } + } else { + throw new ParserException(); // Not defined by ISO/IEC 14496-3:2009. + } + } + + /** + * Parses a StreamMuxConfig as defined in ISO/IEC 14496-3:2009 Section 1.7.3.1, Table 1.42. + */ + private void parseStreamMuxConfig(ParsableBitArray data) throws ParserException { + int audioMuxVersion = data.readBits(1); + audioMuxVersionA = audioMuxVersion == 1 ? data.readBits(1) : 0; + if (audioMuxVersionA == 0) { + if (audioMuxVersion == 1) { + latmGetValue(data); // Skip taraBufferFullness. + } + if (!data.readBit()) { + throw new ParserException(); + } + numSubframes = data.readBits(6); + int numProgram = data.readBits(4); + int numLayer = data.readBits(3); + if (numProgram != 0 || numLayer != 0) { + throw new ParserException(); + } + if (audioMuxVersion == 0) { + int startPosition = data.getPosition(); + int readBits = parseAudioSpecificConfig(data); + data.setPosition(startPosition); + byte[] initData = new byte[(readBits + 7) / 8]; + data.readBits(initData, 0, readBits); + Format format = Format.createAudioSampleFormat(formatId, MimeTypes.AUDIO_AAC, null, + Format.NO_VALUE, Format.NO_VALUE, channelCount, sampleRateHz, + Collections.singletonList(initData), null, 0, language); + if (!format.equals(this.format)) { + this.format = format; + sampleDurationUs = (C.MICROS_PER_SECOND * 1024) / format.sampleRate; + output.format(format); + } + } else { + int ascLen = (int) latmGetValue(data); + int bitsRead = parseAudioSpecificConfig(data); + data.skipBits(ascLen - bitsRead); // fillBits. + } + parseFrameLength(data); + otherDataPresent = data.readBit(); + otherDataLenBits = 0; + if (otherDataPresent) { + if (audioMuxVersion == 1) { + otherDataLenBits = latmGetValue(data); + } else { + boolean otherDataLenEsc; + do { + otherDataLenEsc = data.readBit(); + otherDataLenBits = (otherDataLenBits << 8) + data.readBits(8); + } while (otherDataLenEsc); + } + } + boolean crcCheckPresent = data.readBit(); + if (crcCheckPresent) { + data.skipBits(8); // crcCheckSum. + } + } else { + throw new ParserException(); // This is not defined by ISO/IEC 14496-3:2009. + } + } + + private void parseFrameLength(ParsableBitArray data) { + frameLengthType = data.readBits(3); + switch (frameLengthType) { + case 0: + data.skipBits(8); // latmBufferFullness. + break; + case 1: + data.skipBits(9); // frameLength. + break; + case 3: + case 4: + case 5: + data.skipBits(6); // CELPframeLengthTableIndex. + break; + case 6: + case 7: + data.skipBits(1); // HVXCframeLengthTableIndex. + break; + default: + throw new IllegalStateException(); + } + } + + private int parseAudioSpecificConfig(ParsableBitArray data) throws ParserException { + int bitsLeft = data.bitsLeft(); + Pair config = CodecSpecificDataUtil.parseAacAudioSpecificConfig(data, true); + sampleRateHz = config.first; + channelCount = config.second; + return bitsLeft - data.bitsLeft(); + } + + private int parsePayloadLengthInfo(ParsableBitArray data) throws ParserException { + int muxSlotLengthBytes = 0; + // Assuming single program and single layer. + if (frameLengthType == 0) { + int tmp; + do { + tmp = data.readBits(8); + muxSlotLengthBytes += tmp; + } while (tmp == 255); + return muxSlotLengthBytes; + } else { + throw new ParserException(); + } + } + + private void parsePayloadMux(ParsableBitArray data, int muxLengthBytes) { + // The start of sample data in + int bitPosition = data.getPosition(); + if ((bitPosition & 0x07) == 0) { + // Sample data is byte-aligned. We can output it directly. + sampleDataBuffer.setPosition(bitPosition >> 3); + } else { + // Sample data is not byte-aligned and we need align it ourselves before outputting. + // Byte alignment is needed because LATM framing is not supported by MediaCodec. + data.readBits(sampleDataBuffer.data, 0, muxLengthBytes * 8); + sampleDataBuffer.setPosition(0); + } + output.sampleData(sampleDataBuffer, muxLengthBytes); + output.sampleMetadata(timeUs, C.BUFFER_FLAG_KEY_FRAME, muxLengthBytes, 0, null); + timeUs += sampleDurationUs; + } + + private void resetBufferForSize(int newSize) { + sampleDataBuffer.reset(newSize); + sampleBitArray.reset(sampleDataBuffer.data); + } + + private static long latmGetValue(ParsableBitArray data) { + int bytesForValue = data.readBits(2); + return data.readBits((bytesForValue + 1) * 8); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/MpegAudioReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/MpegAudioReader.java new file mode 100644 index 0000000000..6fefab6314 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/MpegAudioReader.java @@ -0,0 +1,223 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.MpegAudioHeader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; + +/** + * Parses a continuous MPEG Audio byte stream and extracts individual frames. + */ +public final class MpegAudioReader implements ElementaryStreamReader { + + private static final int STATE_FINDING_HEADER = 0; + private static final int STATE_READING_HEADER = 1; + private static final int STATE_READING_FRAME = 2; + + private static final int HEADER_SIZE = 4; + + private final ParsableByteArray headerScratch; + private final MpegAudioHeader header; + private final String language; + + private String formatId; + private TrackOutput output; + + private int state; + private int frameBytesRead; + private boolean hasOutputFormat; + + // Used when finding the frame header. + private boolean lastByteWasFF; + + // Parsed from the frame header. + private long frameDurationUs; + private int frameSize; + + // The timestamp to attach to the next sample in the current packet. + private long timeUs; + + public MpegAudioReader() { + this(null); + } + + public MpegAudioReader(String language) { + state = STATE_FINDING_HEADER; + // The first byte of an MPEG Audio frame header is always 0xFF. + headerScratch = new ParsableByteArray(4); + headerScratch.data[0] = (byte) 0xFF; + header = new MpegAudioHeader(); + this.language = language; + } + + @Override + public void seek() { + state = STATE_FINDING_HEADER; + frameBytesRead = 0; + lastByteWasFF = false; + } + + @Override + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) { + idGenerator.generateNewId(); + formatId = idGenerator.getFormatId(); + output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_AUDIO); + } + + @Override + public void packetStarted(long pesTimeUs, @TsPayloadReader.Flags int flags) { + timeUs = pesTimeUs; + } + + @Override + public void consume(ParsableByteArray data) { + while (data.bytesLeft() > 0) { + switch (state) { + case STATE_FINDING_HEADER: + findHeader(data); + break; + case STATE_READING_HEADER: + readHeaderRemainder(data); + break; + case STATE_READING_FRAME: + readFrameRemainder(data); + break; + default: + throw new IllegalStateException(); + } + } + } + + @Override + public void packetFinished() { + // Do nothing. + } + + /** + * Attempts to locate the start of the next frame header. + *

+ * If a frame header is located then the state is changed to {@link #STATE_READING_HEADER}, the + * first two bytes of the header are written into {@link #headerScratch}, and the position of the + * source is advanced to the byte that immediately follows these two bytes. + *

+ * If a frame header is not located then the position of the source is advanced to the limit, and + * the method should be called again with the next source to continue the search. + * + * @param source The source from which to read. + */ + private void findHeader(ParsableByteArray source) { + byte[] data = source.data; + int startOffset = source.getPosition(); + int endOffset = source.limit(); + for (int i = startOffset; i < endOffset; i++) { + boolean byteIsFF = (data[i] & 0xFF) == 0xFF; + boolean found = lastByteWasFF && (data[i] & 0xE0) == 0xE0; + lastByteWasFF = byteIsFF; + if (found) { + source.setPosition(i + 1); + // Reset lastByteWasFF for next time. + lastByteWasFF = false; + headerScratch.data[1] = data[i]; + frameBytesRead = 2; + state = STATE_READING_HEADER; + return; + } + } + source.setPosition(endOffset); + } + + /** + * Attempts to read the remaining two bytes of the frame header. + *

+ * If a frame header is read in full then the state is changed to {@link #STATE_READING_FRAME}, + * the media format is output if this has not previously occurred, the four header bytes are + * output as sample data, and the position of the source is advanced to the byte that immediately + * follows the header. + *

+ * If a frame header is read in full but cannot be parsed then the state is changed to + * {@link #STATE_READING_HEADER}. + *

+ * If a frame header is not read in full then the position of the source is advanced to the limit, + * and the method should be called again with the next source to continue the read. + * + * @param source The source from which to read. + */ + private void readHeaderRemainder(ParsableByteArray source) { + int bytesToRead = Math.min(source.bytesLeft(), HEADER_SIZE - frameBytesRead); + source.readBytes(headerScratch.data, frameBytesRead, bytesToRead); + frameBytesRead += bytesToRead; + if (frameBytesRead < HEADER_SIZE) { + // We haven't read the whole header yet. + return; + } + + headerScratch.setPosition(0); + boolean parsedHeader = MpegAudioHeader.populateHeader(headerScratch.readInt(), header); + if (!parsedHeader) { + // We thought we'd located a frame header, but we hadn't. + frameBytesRead = 0; + state = STATE_READING_HEADER; + return; + } + + frameSize = header.frameSize; + if (!hasOutputFormat) { + frameDurationUs = (C.MICROS_PER_SECOND * header.samplesPerFrame) / header.sampleRate; + Format format = Format.createAudioSampleFormat(formatId, header.mimeType, null, + Format.NO_VALUE, MpegAudioHeader.MAX_FRAME_SIZE_BYTES, header.channels, header.sampleRate, + null, null, 0, language); + output.format(format); + hasOutputFormat = true; + } + + headerScratch.setPosition(0); + output.sampleData(headerScratch, HEADER_SIZE); + state = STATE_READING_FRAME; + } + + /** + * Attempts to read the remainder of the frame. + *

+ * If a frame is read in full then true is returned. The frame will have been output, and the + * position of the source will have been advanced to the byte that immediately follows the end of + * the frame. + *

+ * If a frame is not read in full then the position of the source will have been advanced to the + * limit, and the method should be called again with the next source to continue the read. + * + * @param source The source from which to read. + */ + private void readFrameRemainder(ParsableByteArray source) { + int bytesToRead = Math.min(source.bytesLeft(), frameSize - frameBytesRead); + output.sampleData(source, bytesToRead); + frameBytesRead += bytesToRead; + if (frameBytesRead < frameSize) { + // We haven't read the whole of the frame yet. + return; + } + + output.sampleMetadata(timeUs, C.BUFFER_FLAG_KEY_FRAME, frameSize, 0, null); + timeUs += frameDurationUs; + frameBytesRead = 0; + state = STATE_FINDING_HEADER; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/NalUnitTargetBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/NalUnitTargetBuffer.java new file mode 100644 index 0000000000..4941aa29a0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/NalUnitTargetBuffer.java @@ -0,0 +1,109 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.Arrays; + +/** + * A buffer that fills itself with data corresponding to a specific NAL unit, as it is + * encountered in the stream. + */ +/* package */ final class NalUnitTargetBuffer { + + private final int targetType; + + private boolean isFilling; + private boolean isCompleted; + + public byte[] nalData; + public int nalLength; + + public NalUnitTargetBuffer(int targetType, int initialCapacity) { + this.targetType = targetType; + + // Initialize data with a start code in the first three bytes. + nalData = new byte[3 + initialCapacity]; + nalData[2] = 1; + } + + /** + * Resets the buffer, clearing any data that it holds. + */ + public void reset() { + isFilling = false; + isCompleted = false; + } + + /** + * Returns whether the buffer currently holds a complete NAL unit of the target type. + */ + public boolean isCompleted() { + return isCompleted; + } + + /** + * Called to indicate that a NAL unit has started. + * + * @param type The type of the NAL unit. + */ + public void startNalUnit(int type) { + Assertions.checkState(!isFilling); + isFilling = type == targetType; + if (isFilling) { + // Skip the three byte start code when writing data. + nalLength = 3; + isCompleted = false; + } + } + + /** + * Called to pass stream data. The data passed should not include the 3 byte start code. + * + * @param data Holds the data being passed. + * @param offset The offset of the data in {@code data}. + * @param limit The limit (exclusive) of the data in {@code data}. + */ + public void appendToNalUnit(byte[] data, int offset, int limit) { + if (!isFilling) { + return; + } + int readLength = limit - offset; + if (nalData.length < nalLength + readLength) { + nalData = Arrays.copyOf(nalData, (nalLength + readLength) * 2); + } + System.arraycopy(data, offset, nalData, nalLength, readLength); + nalLength += readLength; + } + + /** + * Called to indicate that a NAL unit has ended. + * + * @param discardPadding The number of excess bytes that were passed to + * {@link #appendToNalUnit(byte[], int, int)}, which should be discarded. + * @return Whether the ended NAL unit is of the target type. + */ + public boolean endNalUnit(int discardPadding) { + if (!isFilling) { + return false; + } + nalLength -= discardPadding; + isFilling = false; + isCompleted = true; + return true; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PesReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PesReader.java new file mode 100644 index 0000000000..86afe22563 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PesReader.java @@ -0,0 +1,241 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; + +/** + * Parses PES packet data and extracts samples. + */ +public final class PesReader implements TsPayloadReader { + + private static final String TAG = "PesReader"; + + private static final int STATE_FINDING_HEADER = 0; + private static final int STATE_READING_HEADER = 1; + private static final int STATE_READING_HEADER_EXTENSION = 2; + private static final int STATE_READING_BODY = 3; + + private static final int HEADER_SIZE = 9; + private static final int MAX_HEADER_EXTENSION_SIZE = 10; + private static final int PES_SCRATCH_SIZE = 10; // max(HEADER_SIZE, MAX_HEADER_EXTENSION_SIZE) + + private final ElementaryStreamReader reader; + private final ParsableBitArray pesScratch; + + private int state; + private int bytesRead; + + private TimestampAdjuster timestampAdjuster; + private boolean ptsFlag; + private boolean dtsFlag; + private boolean seenFirstDts; + private int extendedHeaderLength; + private int payloadSize; + private boolean dataAlignmentIndicator; + private long timeUs; + + public PesReader(ElementaryStreamReader reader) { + this.reader = reader; + pesScratch = new ParsableBitArray(new byte[PES_SCRATCH_SIZE]); + state = STATE_FINDING_HEADER; + } + + @Override + public void init(TimestampAdjuster timestampAdjuster, ExtractorOutput extractorOutput, + TrackIdGenerator idGenerator) { + this.timestampAdjuster = timestampAdjuster; + reader.createTracks(extractorOutput, idGenerator); + } + + // TsPayloadReader implementation. + + @Override + public final void seek() { + state = STATE_FINDING_HEADER; + bytesRead = 0; + seenFirstDts = false; + reader.seek(); + } + + @Override + public final void consume(ParsableByteArray data, @Flags int flags) throws ParserException { + if ((flags & FLAG_PAYLOAD_UNIT_START_INDICATOR) != 0) { + switch (state) { + case STATE_FINDING_HEADER: + case STATE_READING_HEADER: + // Expected. + break; + case STATE_READING_HEADER_EXTENSION: + Log.w(TAG, "Unexpected start indicator reading extended header"); + break; + case STATE_READING_BODY: + // If payloadSize == -1 then the length of the previous packet was unspecified, and so + // we only know that it's finished now that we've seen the start of the next one. This + // is expected. If payloadSize != -1, then the length of the previous packet was known, + // but we didn't receive that amount of data. This is not expected. + if (payloadSize != -1) { + Log.w(TAG, "Unexpected start indicator: expected " + payloadSize + " more bytes"); + } + // Either way, notify the reader that it has now finished. + reader.packetFinished(); + break; + default: + throw new IllegalStateException(); + } + setState(STATE_READING_HEADER); + } + + while (data.bytesLeft() > 0) { + switch (state) { + case STATE_FINDING_HEADER: + data.skipBytes(data.bytesLeft()); + break; + case STATE_READING_HEADER: + if (continueRead(data, pesScratch.data, HEADER_SIZE)) { + setState(parseHeader() ? STATE_READING_HEADER_EXTENSION : STATE_FINDING_HEADER); + } + break; + case STATE_READING_HEADER_EXTENSION: + int readLength = Math.min(MAX_HEADER_EXTENSION_SIZE, extendedHeaderLength); + // Read as much of the extended header as we're interested in, and skip the rest. + if (continueRead(data, pesScratch.data, readLength) + && continueRead(data, null, extendedHeaderLength)) { + parseHeaderExtension(); + flags |= dataAlignmentIndicator ? FLAG_DATA_ALIGNMENT_INDICATOR : 0; + reader.packetStarted(timeUs, flags); + setState(STATE_READING_BODY); + } + break; + case STATE_READING_BODY: + readLength = data.bytesLeft(); + int padding = payloadSize == -1 ? 0 : readLength - payloadSize; + if (padding > 0) { + readLength -= padding; + data.setLimit(data.getPosition() + readLength); + } + reader.consume(data); + if (payloadSize != -1) { + payloadSize -= readLength; + if (payloadSize == 0) { + reader.packetFinished(); + setState(STATE_READING_HEADER); + } + } + break; + default: + throw new IllegalStateException(); + } + } + } + + private void setState(int state) { + this.state = state; + bytesRead = 0; + } + + /** + * Continues a read from the provided {@code source} into a given {@code target}. It's assumed + * that the data should be written into {@code target} starting from an offset of zero. + * + * @param source The source from which to read. + * @param target The target into which data is to be read, or {@code null} to skip. + * @param targetLength The target length of the read. + * @return Whether the target length has been reached. + */ + private boolean continueRead(ParsableByteArray source, byte[] target, int targetLength) { + int bytesToRead = Math.min(source.bytesLeft(), targetLength - bytesRead); + if (bytesToRead <= 0) { + return true; + } else if (target == null) { + source.skipBytes(bytesToRead); + } else { + source.readBytes(target, bytesRead, bytesToRead); + } + bytesRead += bytesToRead; + return bytesRead == targetLength; + } + + private boolean parseHeader() { + // Note: see ISO/IEC 13818-1, section 2.4.3.6 for detailed information on the format of + // the header. + pesScratch.setPosition(0); + int startCodePrefix = pesScratch.readBits(24); + if (startCodePrefix != 0x000001) { + Log.w(TAG, "Unexpected start code prefix: " + startCodePrefix); + payloadSize = -1; + return false; + } + + pesScratch.skipBits(8); // stream_id. + int packetLength = pesScratch.readBits(16); + pesScratch.skipBits(5); // '10' (2), PES_scrambling_control (2), PES_priority (1) + dataAlignmentIndicator = pesScratch.readBit(); + pesScratch.skipBits(2); // copyright (1), original_or_copy (1) + ptsFlag = pesScratch.readBit(); + dtsFlag = pesScratch.readBit(); + // ESCR_flag (1), ES_rate_flag (1), DSM_trick_mode_flag (1), + // additional_copy_info_flag (1), PES_CRC_flag (1), PES_extension_flag (1) + pesScratch.skipBits(6); + extendedHeaderLength = pesScratch.readBits(8); + + if (packetLength == 0) { + payloadSize = -1; + } else { + payloadSize = packetLength + 6 /* packetLength does not include the first 6 bytes */ + - HEADER_SIZE - extendedHeaderLength; + } + return true; + } + + private void parseHeaderExtension() { + pesScratch.setPosition(0); + timeUs = C.TIME_UNSET; + if (ptsFlag) { + pesScratch.skipBits(4); // '0010' or '0011' + long pts = (long) pesScratch.readBits(3) << 30; + pesScratch.skipBits(1); // marker_bit + pts |= pesScratch.readBits(15) << 15; + pesScratch.skipBits(1); // marker_bit + pts |= pesScratch.readBits(15); + pesScratch.skipBits(1); // marker_bit + if (!seenFirstDts && dtsFlag) { + pesScratch.skipBits(4); // '0011' + long dts = (long) pesScratch.readBits(3) << 30; + pesScratch.skipBits(1); // marker_bit + dts |= pesScratch.readBits(15) << 15; + pesScratch.skipBits(1); // marker_bit + dts |= pesScratch.readBits(15); + pesScratch.skipBits(1); // marker_bit + // Subsequent PES packets may have earlier presentation timestamps than this one, but they + // should all be greater than or equal to this packet's decode timestamp. We feed the + // decode timestamp to the adjuster here so that in the case that this is the first to be + // fed, the adjuster will be able to compute an offset to apply such that the adjusted + // presentation timestamps of all future packets are non-negative. + timestampAdjuster.adjustTsTimestamp(dts); + seenFirstDts = true; + } + timeUs = timestampAdjuster.adjustTsTimestamp(pts); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PsBinarySearchSeeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PsBinarySearchSeeker.java new file mode 100644 index 0000000000..acd08a2f12 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PsBinarySearchSeeker.java @@ -0,0 +1,209 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.BinarySearchSeeker; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** + * A seeker that supports seeking within PS stream using binary search. + * + *

This seeker uses the first and last SCR values within the stream, as well as the stream + * duration to interpolate the SCR value of the seeking position. Then it performs binary search + * within the stream to find a packets whose SCR value is with in {@link #SEEK_TOLERANCE_US} from + * the target SCR. + */ +/* package */ final class PsBinarySearchSeeker extends BinarySearchSeeker { + + private static final long SEEK_TOLERANCE_US = 100_000; + private static final int MINIMUM_SEARCH_RANGE_BYTES = 1000; + private static final int TIMESTAMP_SEARCH_BYTES = 20000; + + public PsBinarySearchSeeker( + TimestampAdjuster scrTimestampAdjuster, long streamDurationUs, long inputLength) { + super( + new DefaultSeekTimestampConverter(), + new PsScrSeeker(scrTimestampAdjuster), + streamDurationUs, + /* floorTimePosition= */ 0, + /* ceilingTimePosition= */ streamDurationUs + 1, + /* floorBytePosition= */ 0, + /* ceilingBytePosition= */ inputLength, + /* approxBytesPerFrame= */ TsExtractor.TS_PACKET_SIZE, + MINIMUM_SEARCH_RANGE_BYTES); + } + + /** + * A seeker that looks for a given SCR timestamp at a given position in a PS stream. + * + *

Given a SCR timestamp, and a position within a PS stream, this seeker will peek up to {@link + * #TIMESTAMP_SEARCH_BYTES} bytes from that stream position, look for all packs in that range, and + * then compare the SCR timestamps (if available) of these packets to the target timestamp. + */ + private static final class PsScrSeeker implements TimestampSeeker { + + private final TimestampAdjuster scrTimestampAdjuster; + private final ParsableByteArray packetBuffer; + + private PsScrSeeker(TimestampAdjuster scrTimestampAdjuster) { + this.scrTimestampAdjuster = scrTimestampAdjuster; + packetBuffer = new ParsableByteArray(); + } + + @Override + public TimestampSearchResult searchForTimestamp(ExtractorInput input, long targetTimestamp) + throws IOException, InterruptedException { + long inputPosition = input.getPosition(); + int bytesToSearch = (int) Math.min(TIMESTAMP_SEARCH_BYTES, input.getLength() - inputPosition); + + packetBuffer.reset(bytesToSearch); + input.peekFully(packetBuffer.data, /* offset= */ 0, bytesToSearch); + + return searchForScrValueInBuffer(packetBuffer, targetTimestamp, inputPosition); + } + + @Override + public void onSeekFinished() { + packetBuffer.reset(Util.EMPTY_BYTE_ARRAY); + } + + private TimestampSearchResult searchForScrValueInBuffer( + ParsableByteArray packetBuffer, long targetScrTimeUs, long bufferStartOffset) { + int startOfLastPacketPosition = C.POSITION_UNSET; + int endOfLastPacketPosition = C.POSITION_UNSET; + long lastScrTimeUsInRange = C.TIME_UNSET; + + while (packetBuffer.bytesLeft() >= 4) { + int nextStartCode = peekIntAtPosition(packetBuffer.data, packetBuffer.getPosition()); + if (nextStartCode != PsExtractor.PACK_START_CODE) { + packetBuffer.skipBytes(1); + continue; + } else { + packetBuffer.skipBytes(4); + } + + // We found a pack. + long scrValue = PsDurationReader.readScrValueFromPack(packetBuffer); + if (scrValue != C.TIME_UNSET) { + long scrTimeUs = scrTimestampAdjuster.adjustTsTimestamp(scrValue); + if (scrTimeUs > targetScrTimeUs) { + if (lastScrTimeUsInRange == C.TIME_UNSET) { + // First SCR timestamp is already over target. + return TimestampSearchResult.overestimatedResult(scrTimeUs, bufferStartOffset); + } else { + // Last SCR timestamp < target timestamp < this timestamp. + return TimestampSearchResult.targetFoundResult( + bufferStartOffset + startOfLastPacketPosition); + } + } else if (scrTimeUs + SEEK_TOLERANCE_US > targetScrTimeUs) { + long startOfPacketInStream = bufferStartOffset + packetBuffer.getPosition(); + return TimestampSearchResult.targetFoundResult(startOfPacketInStream); + } + + lastScrTimeUsInRange = scrTimeUs; + startOfLastPacketPosition = packetBuffer.getPosition(); + } + skipToEndOfCurrentPack(packetBuffer); + endOfLastPacketPosition = packetBuffer.getPosition(); + } + + if (lastScrTimeUsInRange != C.TIME_UNSET) { + long endOfLastPacketPositionInStream = bufferStartOffset + endOfLastPacketPosition; + return TimestampSearchResult.underestimatedResult( + lastScrTimeUsInRange, endOfLastPacketPositionInStream); + } else { + return TimestampSearchResult.NO_TIMESTAMP_IN_RANGE_RESULT; + } + } + + /** + * Skips the buffer position to the position after the end of the current PS pack in the buffer, + * given the byte position right after the {@link PsExtractor#PACK_START_CODE} of the pack in + * the buffer. If the pack ends after the end of the buffer, skips to the end of the buffer. + */ + private static void skipToEndOfCurrentPack(ParsableByteArray packetBuffer) { + int limit = packetBuffer.limit(); + + if (packetBuffer.bytesLeft() < 10) { + // We require at least 9 bytes for pack header to read SCR value + 1 byte for pack_stuffing + // length. + packetBuffer.setPosition(limit); + return; + } + packetBuffer.skipBytes(9); + + int packStuffingLength = packetBuffer.readUnsignedByte() & 0x07; + if (packetBuffer.bytesLeft() < packStuffingLength) { + packetBuffer.setPosition(limit); + return; + } + packetBuffer.skipBytes(packStuffingLength); + + if (packetBuffer.bytesLeft() < 4) { + packetBuffer.setPosition(limit); + return; + } + + int nextStartCode = peekIntAtPosition(packetBuffer.data, packetBuffer.getPosition()); + if (nextStartCode == PsExtractor.SYSTEM_HEADER_START_CODE) { + packetBuffer.skipBytes(4); + int systemHeaderLength = packetBuffer.readUnsignedShort(); + if (packetBuffer.bytesLeft() < systemHeaderLength) { + packetBuffer.setPosition(limit); + return; + } + packetBuffer.skipBytes(systemHeaderLength); + } + + // Find the position of the next PACK_START_CODE or MPEG_PROGRAM_END_CODE, which is right + // after the end position of this pack. + // If we couldn't find these codes within the buffer, return the buffer limit, or return + // the first position which PES packets pattern does not match (some malformed packets). + while (packetBuffer.bytesLeft() >= 4) { + nextStartCode = peekIntAtPosition(packetBuffer.data, packetBuffer.getPosition()); + if (nextStartCode == PsExtractor.PACK_START_CODE + || nextStartCode == PsExtractor.MPEG_PROGRAM_END_CODE) { + break; + } + if (nextStartCode >>> 8 != PsExtractor.PACKET_START_CODE_PREFIX) { + break; + } + packetBuffer.skipBytes(4); + + if (packetBuffer.bytesLeft() < 2) { + // 2 bytes for PES_packet length. + packetBuffer.setPosition(limit); + return; + } + int pesPacketLength = packetBuffer.readUnsignedShort(); + packetBuffer.setPosition( + Math.min(packetBuffer.limit(), packetBuffer.getPosition() + pesPacketLength)); + } + } + } + + private static int peekIntAtPosition(byte[] data, int position) { + return (data[position] & 0xFF) << 24 + | (data[position + 1] & 0xFF) << 16 + | (data[position + 2] & 0xFF) << 8 + | (data[position + 3] & 0xFF); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PsDurationReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PsDurationReader.java new file mode 100644 index 0000000000..a5960fbe15 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PsDurationReader.java @@ -0,0 +1,259 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** + * A reader that can extract the approximate duration from a given MPEG program stream (PS). + * + *

This reader extracts the duration by reading system clock reference (SCR) values from the + * header of a pack at the start and at the end of the stream, calculating the difference, and + * converting that into stream duration. This reader also handles the case when a single SCR + * wraparound takes place within the stream, which can make SCR values at the beginning of the + * stream larger than SCR values at the end. This class can only be used once to read duration from + * a given stream, and the usage of the class is not thread-safe, so all calls should be made from + * the same thread. + * + *

Note: See ISO/IEC 13818-1, Table 2-33 for details of the SCR field in pack_header. + */ +/* package */ final class PsDurationReader { + + private static final int TIMESTAMP_SEARCH_BYTES = 20000; + + private final TimestampAdjuster scrTimestampAdjuster; + private final ParsableByteArray packetBuffer; + + private boolean isDurationRead; + private boolean isFirstScrValueRead; + private boolean isLastScrValueRead; + + private long firstScrValue; + private long lastScrValue; + private long durationUs; + + /* package */ PsDurationReader() { + scrTimestampAdjuster = new TimestampAdjuster(/* firstSampleTimestampUs= */ 0); + firstScrValue = C.TIME_UNSET; + lastScrValue = C.TIME_UNSET; + durationUs = C.TIME_UNSET; + packetBuffer = new ParsableByteArray(); + } + + /** Returns true if a PS duration has been read. */ + public boolean isDurationReadFinished() { + return isDurationRead; + } + + public TimestampAdjuster getScrTimestampAdjuster() { + return scrTimestampAdjuster; + } + + /** + * Reads a PS duration from the input. + * + *

This reader reads the duration by reading SCR values from the header of a pack at the start + * and at the end of the stream, calculating the difference, and converting that into stream + * duration. + * + * @param input The {@link ExtractorInput} from which data should be read. + * @param seekPositionHolder If {@link Extractor#RESULT_SEEK} is returned, this holder is updated + * to hold the position of the required seek. + * @return One of the {@code RESULT_} values defined in {@link Extractor}. + * @throws IOException If an error occurred reading from the input. + * @throws InterruptedException If the thread was interrupted. + */ + public @Extractor.ReadResult int readDuration( + ExtractorInput input, PositionHolder seekPositionHolder) + throws IOException, InterruptedException { + if (!isLastScrValueRead) { + return readLastScrValue(input, seekPositionHolder); + } + if (lastScrValue == C.TIME_UNSET) { + return finishReadDuration(input); + } + if (!isFirstScrValueRead) { + return readFirstScrValue(input, seekPositionHolder); + } + if (firstScrValue == C.TIME_UNSET) { + return finishReadDuration(input); + } + + long minScrPositionUs = scrTimestampAdjuster.adjustTsTimestamp(firstScrValue); + long maxScrPositionUs = scrTimestampAdjuster.adjustTsTimestamp(lastScrValue); + durationUs = maxScrPositionUs - minScrPositionUs; + return finishReadDuration(input); + } + + /** Returns the duration last read from {@link #readDuration(ExtractorInput, PositionHolder)}. */ + public long getDurationUs() { + return durationUs; + } + + /** + * Returns the SCR value read from the next pack in the stream, given the buffer at the pack + * header start position (just behind the pack start code). + */ + public static long readScrValueFromPack(ParsableByteArray packetBuffer) { + int originalPosition = packetBuffer.getPosition(); + if (packetBuffer.bytesLeft() < 9) { + // We require at 9 bytes for pack header to read scr value + return C.TIME_UNSET; + } + byte[] scrBytes = new byte[9]; + packetBuffer.readBytes(scrBytes, /* offset= */ 0, scrBytes.length); + packetBuffer.setPosition(originalPosition); + if (!checkMarkerBits(scrBytes)) { + return C.TIME_UNSET; + } + return readScrValueFromPackHeader(scrBytes); + } + + private int finishReadDuration(ExtractorInput input) { + packetBuffer.reset(Util.EMPTY_BYTE_ARRAY); + isDurationRead = true; + input.resetPeekPosition(); + return Extractor.RESULT_CONTINUE; + } + + private int readFirstScrValue(ExtractorInput input, PositionHolder seekPositionHolder) + throws IOException, InterruptedException { + int bytesToSearch = (int) Math.min(TIMESTAMP_SEARCH_BYTES, input.getLength()); + int searchStartPosition = 0; + if (input.getPosition() != searchStartPosition) { + seekPositionHolder.position = searchStartPosition; + return Extractor.RESULT_SEEK; + } + + packetBuffer.reset(bytesToSearch); + input.resetPeekPosition(); + input.peekFully(packetBuffer.data, /* offset= */ 0, bytesToSearch); + + firstScrValue = readFirstScrValueFromBuffer(packetBuffer); + isFirstScrValueRead = true; + return Extractor.RESULT_CONTINUE; + } + + private long readFirstScrValueFromBuffer(ParsableByteArray packetBuffer) { + int searchStartPosition = packetBuffer.getPosition(); + int searchEndPosition = packetBuffer.limit(); + for (int searchPosition = searchStartPosition; + searchPosition < searchEndPosition - 3; + searchPosition++) { + int nextStartCode = peekIntAtPosition(packetBuffer.data, searchPosition); + if (nextStartCode == PsExtractor.PACK_START_CODE) { + packetBuffer.setPosition(searchPosition + 4); + long scrValue = readScrValueFromPack(packetBuffer); + if (scrValue != C.TIME_UNSET) { + return scrValue; + } + } + } + return C.TIME_UNSET; + } + + private int readLastScrValue(ExtractorInput input, PositionHolder seekPositionHolder) + throws IOException, InterruptedException { + long inputLength = input.getLength(); + int bytesToSearch = (int) Math.min(TIMESTAMP_SEARCH_BYTES, inputLength); + long searchStartPosition = inputLength - bytesToSearch; + if (input.getPosition() != searchStartPosition) { + seekPositionHolder.position = searchStartPosition; + return Extractor.RESULT_SEEK; + } + + packetBuffer.reset(bytesToSearch); + input.resetPeekPosition(); + input.peekFully(packetBuffer.data, /* offset= */ 0, bytesToSearch); + + lastScrValue = readLastScrValueFromBuffer(packetBuffer); + isLastScrValueRead = true; + return Extractor.RESULT_CONTINUE; + } + + private long readLastScrValueFromBuffer(ParsableByteArray packetBuffer) { + int searchStartPosition = packetBuffer.getPosition(); + int searchEndPosition = packetBuffer.limit(); + for (int searchPosition = searchEndPosition - 4; + searchPosition >= searchStartPosition; + searchPosition--) { + int nextStartCode = peekIntAtPosition(packetBuffer.data, searchPosition); + if (nextStartCode == PsExtractor.PACK_START_CODE) { + packetBuffer.setPosition(searchPosition + 4); + long scrValue = readScrValueFromPack(packetBuffer); + if (scrValue != C.TIME_UNSET) { + return scrValue; + } + } + } + return C.TIME_UNSET; + } + + private int peekIntAtPosition(byte[] data, int position) { + return (data[position] & 0xFF) << 24 + | (data[position + 1] & 0xFF) << 16 + | (data[position + 2] & 0xFF) << 8 + | (data[position + 3] & 0xFF); + } + + private static boolean checkMarkerBits(byte[] scrBytes) { + // Verify the 01xxx1xx marker on the 0th byte + if ((scrBytes[0] & 0xC4) != 0x44) { + return false; + } + // 1st byte belongs to scr field. + // Verify the xxxxx1xx marker on the 2nd byte + if ((scrBytes[2] & 0x04) != 0x04) { + return false; + } + // 3rd byte belongs to scr field. + // Verify the xxxxx1xx marker on the 4rd byte + if ((scrBytes[4] & 0x04) != 0x04) { + return false; + } + // Verify the xxxxxxx1 marker on the 5th byte + if ((scrBytes[5] & 0x01) != 0x01) { + return false; + } + // 6th and 7th bytes belongs to program_max_rate field. + // Verify the xxxxxx11 marker on the 8th byte + return (scrBytes[8] & 0x03) == 0x03; + } + + /** + * Returns the value of SCR base - 33 bits in big endian order from the PS pack header, ignoring + * the marker bits. Note: See ISO/IEC 13818-1, Table 2-33 for details of the SCR field in + * pack_header. + * + *

We ignore SCR Ext, because it's too small to have any significance. + */ + private static long readScrValueFromPackHeader(byte[] scrBytes) { + return ((scrBytes[0] & 0b00111000L) >> 3) << 30 + | (scrBytes[0] & 0b00000011L) << 28 + | (scrBytes[1] & 0xFFL) << 20 + | ((scrBytes[2] & 0b11111000L) >> 3) << 15 + | (scrBytes[2] & 0b00000011L) << 13 + | (scrBytes[3] & 0xFFL) << 5 + | (scrBytes[4] & 0b11111000L) >> 3; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PsExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PsExtractor.java new file mode 100644 index 0000000000..8dcccbe459 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/PsExtractor.java @@ -0,0 +1,397 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import android.util.SparseArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import java.io.IOException; + +/** + * Extracts data from the MPEG-2 PS container format. + */ +public final class PsExtractor implements Extractor { + + /** Factory for {@link PsExtractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new PsExtractor()}; + + /* package */ static final int PACK_START_CODE = 0x000001BA; + /* package */ static final int SYSTEM_HEADER_START_CODE = 0x000001BB; + /* package */ static final int PACKET_START_CODE_PREFIX = 0x000001; + /* package */ static final int MPEG_PROGRAM_END_CODE = 0x000001B9; + private static final int MAX_STREAM_ID_PLUS_ONE = 0x100; + + // Max search length for first audio and video track in input data. + private static final long MAX_SEARCH_LENGTH = 1024 * 1024; + // Max search length for additional audio and video tracks in input data after at least one audio + // and video track has been found. + private static final long MAX_SEARCH_LENGTH_AFTER_AUDIO_AND_VIDEO_FOUND = 8 * 1024; + + public static final int PRIVATE_STREAM_1 = 0xBD; + public static final int AUDIO_STREAM = 0xC0; + public static final int AUDIO_STREAM_MASK = 0xE0; + public static final int VIDEO_STREAM = 0xE0; + public static final int VIDEO_STREAM_MASK = 0xF0; + + private final TimestampAdjuster timestampAdjuster; + private final SparseArray psPayloadReaders; // Indexed by pid + private final ParsableByteArray psPacketBuffer; + private final PsDurationReader durationReader; + + private boolean foundAllTracks; + private boolean foundAudioTrack; + private boolean foundVideoTrack; + private long lastTrackPosition; + + // Accessed only by the loading thread. + private PsBinarySearchSeeker psBinarySearchSeeker; + private ExtractorOutput output; + private boolean hasOutputSeekMap; + + public PsExtractor() { + this(new TimestampAdjuster(0)); + } + + public PsExtractor(TimestampAdjuster timestampAdjuster) { + this.timestampAdjuster = timestampAdjuster; + psPacketBuffer = new ParsableByteArray(4096); + psPayloadReaders = new SparseArray<>(); + durationReader = new PsDurationReader(); + } + + // Extractor implementation. + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + byte[] scratch = new byte[14]; + input.peekFully(scratch, 0, 14); + + // Verify the PACK_START_CODE for the first 4 bytes + if (PACK_START_CODE != (((scratch[0] & 0xFF) << 24) | ((scratch[1] & 0xFF) << 16) + | ((scratch[2] & 0xFF) << 8) | (scratch[3] & 0xFF))) { + return false; + } + // Verify the 01xxx1xx marker on the 5th byte + if ((scratch[4] & 0xC4) != 0x44) { + return false; + } + // Verify the xxxxx1xx marker on the 7th byte + if ((scratch[6] & 0x04) != 0x04) { + return false; + } + // Verify the xxxxx1xx marker on the 9th byte + if ((scratch[8] & 0x04) != 0x04) { + return false; + } + // Verify the xxxxxxx1 marker on the 10th byte + if ((scratch[9] & 0x01) != 0x01) { + return false; + } + // Verify the xxxxxx11 marker on the 13th byte + if ((scratch[12] & 0x03) != 0x03) { + return false; + } + // Read the stuffing length from the 14th byte (last 3 bits) + int packStuffingLength = scratch[13] & 0x07; + input.advancePeekPosition(packStuffingLength); + // Now check that the next 3 bytes are the beginning of an MPEG start code + input.peekFully(scratch, 0, 3); + return (PACKET_START_CODE_PREFIX == (((scratch[0] & 0xFF) << 16) | ((scratch[1] & 0xFF) << 8) + | (scratch[2] & 0xFF))); + } + + @Override + public void init(ExtractorOutput output) { + this.output = output; + } + + @Override + public void seek(long position, long timeUs) { + boolean hasNotEncounteredFirstTimestamp = + timestampAdjuster.getTimestampOffsetUs() == C.TIME_UNSET; + if (hasNotEncounteredFirstTimestamp + || (timestampAdjuster.getFirstSampleTimestampUs() != 0 + && timestampAdjuster.getFirstSampleTimestampUs() != timeUs)) { + // - If the timestamp adjuster in the PS stream has not encountered any sample, it's going to + // treat the first timestamp encountered as sample time 0, which is incorrect. In this case, + // we have to set the first sample timestamp manually. + // - If the timestamp adjuster has its timestamp set manually before, and now we seek to a + // different position, we need to set the first sample timestamp manually again. + timestampAdjuster.reset(); + timestampAdjuster.setFirstSampleTimestampUs(timeUs); + } + + if (psBinarySearchSeeker != null) { + psBinarySearchSeeker.setSeekTargetUs(timeUs); + } + for (int i = 0; i < psPayloadReaders.size(); i++) { + psPayloadReaders.valueAt(i).seek(); + } + } + + @Override + public void release() { + // Do nothing + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + + long inputLength = input.getLength(); + boolean canReadDuration = inputLength != C.LENGTH_UNSET; + if (canReadDuration && !durationReader.isDurationReadFinished()) { + return durationReader.readDuration(input, seekPosition); + } + maybeOutputSeekMap(inputLength); + if (psBinarySearchSeeker != null && psBinarySearchSeeker.isSeeking()) { + return psBinarySearchSeeker.handlePendingSeek(input, seekPosition); + } + + input.resetPeekPosition(); + long peekBytesLeft = + inputLength != C.LENGTH_UNSET ? inputLength - input.getPeekPosition() : C.LENGTH_UNSET; + if (peekBytesLeft != C.LENGTH_UNSET && peekBytesLeft < 4) { + return RESULT_END_OF_INPUT; + } + // First peek and check what type of start code is next. + if (!input.peekFully(psPacketBuffer.data, 0, 4, true)) { + return RESULT_END_OF_INPUT; + } + + psPacketBuffer.setPosition(0); + int nextStartCode = psPacketBuffer.readInt(); + if (nextStartCode == MPEG_PROGRAM_END_CODE) { + return RESULT_END_OF_INPUT; + } else if (nextStartCode == PACK_START_CODE) { + // Now peek the rest of the pack_header. + input.peekFully(psPacketBuffer.data, 0, 10); + + // We only care about the pack_stuffing_length in here, skip the first 77 bits. + psPacketBuffer.setPosition(9); + + // Last 3 bits is the length. + int packStuffingLength = psPacketBuffer.readUnsignedByte() & 0x07; + + // Now skip the stuffing and the pack header. + input.skipFully(packStuffingLength + 14); + return RESULT_CONTINUE; + } else if (nextStartCode == SYSTEM_HEADER_START_CODE) { + // We just skip all this, but we need to get the length first. + input.peekFully(psPacketBuffer.data, 0, 2); + + // Length is the next 2 bytes. + psPacketBuffer.setPosition(0); + int systemHeaderLength = psPacketBuffer.readUnsignedShort(); + input.skipFully(systemHeaderLength + 6); + return RESULT_CONTINUE; + } else if (((nextStartCode & 0xFFFFFF00) >> 8) != PACKET_START_CODE_PREFIX) { + input.skipFully(1); // Skip bytes until we see a valid start code again. + return RESULT_CONTINUE; + } + + // We're at the start of a regular PES packet now. + // Get the stream ID off the last byte of the start code. + int streamId = nextStartCode & 0xFF; + + // Check to see if we have this one in our map yet, and if not, then add it. + PesReader payloadReader = psPayloadReaders.get(streamId); + if (!foundAllTracks) { + if (payloadReader == null) { + ElementaryStreamReader elementaryStreamReader = null; + if (streamId == PRIVATE_STREAM_1) { + // Private stream, used for AC3 audio. + // NOTE: This may need further parsing to determine if its DTS, but that's likely only + // valid for DVDs. + elementaryStreamReader = new Ac3Reader(); + foundAudioTrack = true; + lastTrackPosition = input.getPosition(); + } else if ((streamId & AUDIO_STREAM_MASK) == AUDIO_STREAM) { + elementaryStreamReader = new MpegAudioReader(); + foundAudioTrack = true; + lastTrackPosition = input.getPosition(); + } else if ((streamId & VIDEO_STREAM_MASK) == VIDEO_STREAM) { + elementaryStreamReader = new H262Reader(); + foundVideoTrack = true; + lastTrackPosition = input.getPosition(); + } + if (elementaryStreamReader != null) { + TrackIdGenerator idGenerator = new TrackIdGenerator(streamId, MAX_STREAM_ID_PLUS_ONE); + elementaryStreamReader.createTracks(output, idGenerator); + payloadReader = new PesReader(elementaryStreamReader, timestampAdjuster); + psPayloadReaders.put(streamId, payloadReader); + } + } + long maxSearchPosition = + foundAudioTrack && foundVideoTrack + ? lastTrackPosition + MAX_SEARCH_LENGTH_AFTER_AUDIO_AND_VIDEO_FOUND + : MAX_SEARCH_LENGTH; + if (input.getPosition() > maxSearchPosition) { + foundAllTracks = true; + output.endTracks(); + } + } + + // The next 2 bytes are the length. Once we have that we can consume the complete packet. + input.peekFully(psPacketBuffer.data, 0, 2); + psPacketBuffer.setPosition(0); + int payloadLength = psPacketBuffer.readUnsignedShort(); + int pesLength = payloadLength + 6; + + if (payloadReader == null) { + // Just skip this data. + input.skipFully(pesLength); + } else { + psPacketBuffer.reset(pesLength); + // Read the whole packet and the header for consumption. + input.readFully(psPacketBuffer.data, 0, pesLength); + psPacketBuffer.setPosition(6); + payloadReader.consume(psPacketBuffer); + psPacketBuffer.setLimit(psPacketBuffer.capacity()); + } + + return RESULT_CONTINUE; + } + + // Internals. + + private void maybeOutputSeekMap(long inputLength) { + if (!hasOutputSeekMap) { + hasOutputSeekMap = true; + if (durationReader.getDurationUs() != C.TIME_UNSET) { + psBinarySearchSeeker = + new PsBinarySearchSeeker( + durationReader.getScrTimestampAdjuster(), + durationReader.getDurationUs(), + inputLength); + output.seekMap(psBinarySearchSeeker.getSeekMap()); + } else { + output.seekMap(new SeekMap.Unseekable(durationReader.getDurationUs())); + } + } + } + + /** + * Parses PES packet data and extracts samples. + */ + private static final class PesReader { + + private static final int PES_SCRATCH_SIZE = 64; + + private final ElementaryStreamReader pesPayloadReader; + private final TimestampAdjuster timestampAdjuster; + private final ParsableBitArray pesScratch; + + private boolean ptsFlag; + private boolean dtsFlag; + private boolean seenFirstDts; + private int extendedHeaderLength; + private long timeUs; + + public PesReader(ElementaryStreamReader pesPayloadReader, TimestampAdjuster timestampAdjuster) { + this.pesPayloadReader = pesPayloadReader; + this.timestampAdjuster = timestampAdjuster; + pesScratch = new ParsableBitArray(new byte[PES_SCRATCH_SIZE]); + } + + /** + * Notifies the reader that a seek has occurred. + *

+ * Following a call to this method, the data passed to the next invocation of + * {@link #consume(ParsableByteArray)} will not be a continuation of the data that was + * previously passed. Hence the reader should reset any internal state. + */ + public void seek() { + seenFirstDts = false; + pesPayloadReader.seek(); + } + + /** + * Consumes the payload of a PS packet. + * + * @param data The PES packet. The position will be set to the start of the payload. + * @throws ParserException If the payload could not be parsed. + */ + public void consume(ParsableByteArray data) throws ParserException { + data.readBytes(pesScratch.data, 0, 3); + pesScratch.setPosition(0); + parseHeader(); + data.readBytes(pesScratch.data, 0, extendedHeaderLength); + pesScratch.setPosition(0); + parseHeaderExtension(); + pesPayloadReader.packetStarted(timeUs, TsPayloadReader.FLAG_DATA_ALIGNMENT_INDICATOR); + pesPayloadReader.consume(data); + // We always have complete PES packets with program stream. + pesPayloadReader.packetFinished(); + } + + private void parseHeader() { + // Note: see ISO/IEC 13818-1, section 2.4.3.6 for detailed information on the format of + // the header. + // First 8 bits are skipped: '10' (2), PES_scrambling_control (2), PES_priority (1), + // data_alignment_indicator (1), copyright (1), original_or_copy (1) + pesScratch.skipBits(8); + ptsFlag = pesScratch.readBit(); + dtsFlag = pesScratch.readBit(); + // ESCR_flag (1), ES_rate_flag (1), DSM_trick_mode_flag (1), + // additional_copy_info_flag (1), PES_CRC_flag (1), PES_extension_flag (1) + pesScratch.skipBits(6); + extendedHeaderLength = pesScratch.readBits(8); + } + + private void parseHeaderExtension() { + timeUs = 0; + if (ptsFlag) { + pesScratch.skipBits(4); // '0010' or '0011' + long pts = (long) pesScratch.readBits(3) << 30; + pesScratch.skipBits(1); // marker_bit + pts |= pesScratch.readBits(15) << 15; + pesScratch.skipBits(1); // marker_bit + pts |= pesScratch.readBits(15); + pesScratch.skipBits(1); // marker_bit + if (!seenFirstDts && dtsFlag) { + pesScratch.skipBits(4); // '0011' + long dts = (long) pesScratch.readBits(3) << 30; + pesScratch.skipBits(1); // marker_bit + dts |= pesScratch.readBits(15) << 15; + pesScratch.skipBits(1); // marker_bit + dts |= pesScratch.readBits(15); + pesScratch.skipBits(1); // marker_bit + // Subsequent PES packets may have earlier presentation timestamps than this one, but they + // should all be greater than or equal to this packet's decode timestamp. We feed the + // decode timestamp to the adjuster here so that in the case that this is the first to be + // fed, the adjuster will be able to compute an offset to apply such that the adjusted + // presentation timestamps of all future packets are non-negative. + timestampAdjuster.adjustTsTimestamp(dts); + seenFirstDts = true; + } + timeUs = timestampAdjuster.adjustTsTimestamp(pts); + } + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SectionPayloadReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SectionPayloadReader.java new file mode 100644 index 0000000000..b5942b8bcc --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SectionPayloadReader.java @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; + +/** + * Reads section data. + */ +public interface SectionPayloadReader { + + /** + * Initializes the section payload reader. + * + * @param timestampAdjuster A timestamp adjuster for offsetting and scaling sample timestamps. + * @param extractorOutput The {@link ExtractorOutput} that receives the extracted data. + * @param idGenerator A {@link PesReader.TrackIdGenerator} that generates unique track ids for the + * {@link TrackOutput}s. + */ + void init(TimestampAdjuster timestampAdjuster, ExtractorOutput extractorOutput, + TrackIdGenerator idGenerator); + + /** + * Called by a {@link SectionReader} when a full section is received. + * + * @param sectionData The data belonging to a section starting from the table_id. If + * section_syntax_indicator is set to '1', {@code sectionData} excludes the CRC_32 field. + * Otherwise, all bytes belonging to the table section are included. + */ + void consume(ParsableByteArray sectionData); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SectionReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SectionReader.java new file mode 100644 index 0000000000..61b53cfa72 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SectionReader.java @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Reads section data packets and feeds the whole sections to a given {@link SectionPayloadReader}. + * Useful information on PSI sections can be found in ISO/IEC 13818-1, section 2.4.4. + */ +public final class SectionReader implements TsPayloadReader { + + private static final int SECTION_HEADER_LENGTH = 3; + private static final int DEFAULT_SECTION_BUFFER_LENGTH = 32; + private static final int MAX_SECTION_LENGTH = 4098; + + private final SectionPayloadReader reader; + private final ParsableByteArray sectionData; + + private int totalSectionLength; + private int bytesRead; + private boolean sectionSyntaxIndicator; + private boolean waitingForPayloadStart; + + public SectionReader(SectionPayloadReader reader) { + this.reader = reader; + sectionData = new ParsableByteArray(DEFAULT_SECTION_BUFFER_LENGTH); + } + + @Override + public void init(TimestampAdjuster timestampAdjuster, ExtractorOutput extractorOutput, + TrackIdGenerator idGenerator) { + reader.init(timestampAdjuster, extractorOutput, idGenerator); + waitingForPayloadStart = true; + } + + @Override + public void seek() { + waitingForPayloadStart = true; + } + + @Override + public void consume(ParsableByteArray data, @Flags int flags) { + boolean payloadUnitStartIndicator = (flags & FLAG_PAYLOAD_UNIT_START_INDICATOR) != 0; + int payloadStartPosition = C.POSITION_UNSET; + if (payloadUnitStartIndicator) { + int payloadStartOffset = data.readUnsignedByte(); + payloadStartPosition = data.getPosition() + payloadStartOffset; + } + + if (waitingForPayloadStart) { + if (!payloadUnitStartIndicator) { + return; + } + waitingForPayloadStart = false; + data.setPosition(payloadStartPosition); + bytesRead = 0; + } + + while (data.bytesLeft() > 0) { + if (bytesRead < SECTION_HEADER_LENGTH) { + // Note: see ISO/IEC 13818-1, section 2.4.4.3 for detailed information on the format of + // the header. + if (bytesRead == 0) { + int tableId = data.readUnsignedByte(); + data.setPosition(data.getPosition() - 1); + if (tableId == 0xFF /* forbidden value */) { + // No more sections in this ts packet. + waitingForPayloadStart = true; + return; + } + } + int headerBytesToRead = Math.min(data.bytesLeft(), SECTION_HEADER_LENGTH - bytesRead); + data.readBytes(sectionData.data, bytesRead, headerBytesToRead); + bytesRead += headerBytesToRead; + if (bytesRead == SECTION_HEADER_LENGTH) { + sectionData.reset(SECTION_HEADER_LENGTH); + sectionData.skipBytes(1); // Skip table id (8). + int secondHeaderByte = sectionData.readUnsignedByte(); + int thirdHeaderByte = sectionData.readUnsignedByte(); + sectionSyntaxIndicator = (secondHeaderByte & 0x80) != 0; + totalSectionLength = + (((secondHeaderByte & 0x0F) << 8) | thirdHeaderByte) + SECTION_HEADER_LENGTH; + if (sectionData.capacity() < totalSectionLength) { + // Ensure there is enough space to keep the whole section. + byte[] bytes = sectionData.data; + sectionData.reset( + Math.min(MAX_SECTION_LENGTH, Math.max(totalSectionLength, bytes.length * 2))); + System.arraycopy(bytes, 0, sectionData.data, 0, SECTION_HEADER_LENGTH); + } + } + } else { + // Reading the body. + int bodyBytesToRead = Math.min(data.bytesLeft(), totalSectionLength - bytesRead); + data.readBytes(sectionData.data, bytesRead, bodyBytesToRead); + bytesRead += bodyBytesToRead; + if (bytesRead == totalSectionLength) { + if (sectionSyntaxIndicator) { + // This section has common syntax as defined in ISO/IEC 13818-1, section 2.4.4.11. + if (Util.crc32(sectionData.data, 0, totalSectionLength, 0xFFFFFFFF) != 0) { + // The CRC is invalid so discard the section. + waitingForPayloadStart = true; + return; + } + sectionData.reset(totalSectionLength - 4); // Exclude the CRC_32 field. + } else { + // This is a private section with private defined syntax. + sectionData.reset(totalSectionLength); + } + reader.consume(sectionData); + bytesRead = 0; + } + } + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SeiReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SeiReader.java new file mode 100644 index 0000000000..88ea482be4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SeiReader.java @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea.CeaUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.List; + +/** Consumes SEI buffers, outputting contained CEA-608 messages to a {@link TrackOutput}. */ +public final class SeiReader { + + private final List closedCaptionFormats; + private final TrackOutput[] outputs; + + /** + * @param closedCaptionFormats A list of formats for the closed caption channels to expose. + */ + public SeiReader(List closedCaptionFormats) { + this.closedCaptionFormats = closedCaptionFormats; + outputs = new TrackOutput[closedCaptionFormats.size()]; + } + + public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) { + for (int i = 0; i < outputs.length; i++) { + idGenerator.generateNewId(); + TrackOutput output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_TEXT); + Format channelFormat = closedCaptionFormats.get(i); + String channelMimeType = channelFormat.sampleMimeType; + Assertions.checkArgument(MimeTypes.APPLICATION_CEA608.equals(channelMimeType) + || MimeTypes.APPLICATION_CEA708.equals(channelMimeType), + "Invalid closed caption mime type provided: " + channelMimeType); + String formatId = channelFormat.id != null ? channelFormat.id : idGenerator.getFormatId(); + output.format( + Format.createTextSampleFormat( + formatId, + channelMimeType, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + channelFormat.selectionFlags, + channelFormat.language, + channelFormat.accessibilityChannel, + /* drmInitData= */ null, + Format.OFFSET_SAMPLE_RELATIVE, + channelFormat.initializationData)); + outputs[i] = output; + } + } + + public void consume(long pesTimeUs, ParsableByteArray seiBuffer) { + CeaUtil.consume(pesTimeUs, seiBuffer, outputs); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SpliceInfoSectionReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SpliceInfoSectionReader.java new file mode 100644 index 0000000000..17223bad7c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/SpliceInfoSectionReader.java @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; + +/** + * Parses splice info sections as defined by SCTE35. + */ +public final class SpliceInfoSectionReader implements SectionPayloadReader { + + private TimestampAdjuster timestampAdjuster; + private TrackOutput output; + private boolean formatDeclared; + + @Override + public void init(TimestampAdjuster timestampAdjuster, ExtractorOutput extractorOutput, + TsPayloadReader.TrackIdGenerator idGenerator) { + this.timestampAdjuster = timestampAdjuster; + idGenerator.generateNewId(); + output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_METADATA); + output.format(Format.createSampleFormat(idGenerator.getFormatId(), MimeTypes.APPLICATION_SCTE35, + null, Format.NO_VALUE, null)); + } + + @Override + public void consume(ParsableByteArray sectionData) { + if (!formatDeclared) { + if (timestampAdjuster.getTimestampOffsetUs() == C.TIME_UNSET) { + // There is not enough information to initialize the timestamp adjuster. + return; + } + output.format(Format.createSampleFormat(null, MimeTypes.APPLICATION_SCTE35, + timestampAdjuster.getTimestampOffsetUs())); + formatDeclared = true; + } + int sampleSize = sectionData.bytesLeft(); + output.sampleData(sectionData, sampleSize); + output.sampleMetadata(timestampAdjuster.getLastAdjustedTimestampUs(), C.BUFFER_FLAG_KEY_FRAME, + sampleSize, 0, null); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsBinarySearchSeeker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsBinarySearchSeeker.java new file mode 100644 index 0000000000..136691bdaf --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsBinarySearchSeeker.java @@ -0,0 +1,140 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.BinarySearchSeeker; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** + * A seeker that supports seeking within TS stream using binary search. + * + *

This seeker uses the first and last PCR values within the stream, as well as the stream + * duration to interpolate the PCR value of the seeking position. Then it performs binary search + * within the stream to find a packets whose PCR value is within {@link #SEEK_TOLERANCE_US} from the + * target PCR. + */ +/* package */ final class TsBinarySearchSeeker extends BinarySearchSeeker { + + private static final long SEEK_TOLERANCE_US = 100_000; + private static final int MINIMUM_SEARCH_RANGE_BYTES = 5 * TsExtractor.TS_PACKET_SIZE; + private static final int TIMESTAMP_SEARCH_BYTES = 600 * TsExtractor.TS_PACKET_SIZE; + + public TsBinarySearchSeeker( + TimestampAdjuster pcrTimestampAdjuster, long streamDurationUs, long inputLength, int pcrPid) { + super( + new DefaultSeekTimestampConverter(), + new TsPcrSeeker(pcrPid, pcrTimestampAdjuster), + streamDurationUs, + /* floorTimePosition= */ 0, + /* ceilingTimePosition= */ streamDurationUs + 1, + /* floorBytePosition= */ 0, + /* ceilingBytePosition= */ inputLength, + /* approxBytesPerFrame= */ TsExtractor.TS_PACKET_SIZE, + MINIMUM_SEARCH_RANGE_BYTES); + } + + /** + * A {@link TimestampSeeker} implementation that looks for a given PCR timestamp at a given + * position in a TS stream. + * + *

Given a PCR timestamp, and a position within a TS stream, this seeker will peek up to {@link + * #TIMESTAMP_SEARCH_BYTES} from that stream position, look for all packets with PID equal to + * PCR_PID, and then compare the PCR timestamps (if available) of these packets to the target + * timestamp. + */ + private static final class TsPcrSeeker implements TimestampSeeker { + + private final TimestampAdjuster pcrTimestampAdjuster; + private final ParsableByteArray packetBuffer; + private final int pcrPid; + + public TsPcrSeeker(int pcrPid, TimestampAdjuster pcrTimestampAdjuster) { + this.pcrPid = pcrPid; + this.pcrTimestampAdjuster = pcrTimestampAdjuster; + packetBuffer = new ParsableByteArray(); + } + + @Override + public TimestampSearchResult searchForTimestamp(ExtractorInput input, long targetTimestamp) + throws IOException, InterruptedException { + long inputPosition = input.getPosition(); + int bytesToSearch = (int) Math.min(TIMESTAMP_SEARCH_BYTES, input.getLength() - inputPosition); + + packetBuffer.reset(bytesToSearch); + input.peekFully(packetBuffer.data, /* offset= */ 0, bytesToSearch); + + return searchForPcrValueInBuffer(packetBuffer, targetTimestamp, inputPosition); + } + + private TimestampSearchResult searchForPcrValueInBuffer( + ParsableByteArray packetBuffer, long targetPcrTimeUs, long bufferStartOffset) { + int limit = packetBuffer.limit(); + + long startOfLastPacketPosition = C.POSITION_UNSET; + long endOfLastPacketPosition = C.POSITION_UNSET; + long lastPcrTimeUsInRange = C.TIME_UNSET; + + while (packetBuffer.bytesLeft() >= TsExtractor.TS_PACKET_SIZE) { + int startOfPacket = + TsUtil.findSyncBytePosition(packetBuffer.data, packetBuffer.getPosition(), limit); + int endOfPacket = startOfPacket + TsExtractor.TS_PACKET_SIZE; + if (endOfPacket > limit) { + break; + } + long pcrValue = TsUtil.readPcrFromPacket(packetBuffer, startOfPacket, pcrPid); + if (pcrValue != C.TIME_UNSET) { + long pcrTimeUs = pcrTimestampAdjuster.adjustTsTimestamp(pcrValue); + if (pcrTimeUs > targetPcrTimeUs) { + if (lastPcrTimeUsInRange == C.TIME_UNSET) { + // First PCR timestamp is already over target. + return TimestampSearchResult.overestimatedResult(pcrTimeUs, bufferStartOffset); + } else { + // Last PCR timestamp < target timestamp < this timestamp. + return TimestampSearchResult.targetFoundResult( + bufferStartOffset + startOfLastPacketPosition); + } + } else if (pcrTimeUs + SEEK_TOLERANCE_US > targetPcrTimeUs) { + long startOfPacketInStream = bufferStartOffset + startOfPacket; + return TimestampSearchResult.targetFoundResult(startOfPacketInStream); + } + + lastPcrTimeUsInRange = pcrTimeUs; + startOfLastPacketPosition = startOfPacket; + } + packetBuffer.setPosition(endOfPacket); + endOfLastPacketPosition = endOfPacket; + } + + if (lastPcrTimeUsInRange != C.TIME_UNSET) { + long endOfLastPacketPositionInStream = bufferStartOffset + endOfLastPacketPosition; + return TimestampSearchResult.underestimatedResult( + lastPcrTimeUsInRange, endOfLastPacketPositionInStream); + } else { + return TimestampSearchResult.NO_TIMESTAMP_IN_RANGE_RESULT; + } + } + + @Override + public void onSeekFinished() { + packetBuffer.reset(Util.EMPTY_BYTE_ARRAY); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsDurationReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsDurationReader.java new file mode 100644 index 0000000000..ed4b66a7e4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsDurationReader.java @@ -0,0 +1,197 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** + * A reader that can extract the approximate duration from a given MPEG transport stream (TS). + * + *

This reader extracts the duration by reading PCR values of the PCR PID packets at the start + * and at the end of the stream, calculating the difference, and converting that into stream + * duration. This reader also handles the case when a single PCR wraparound takes place within the + * stream, which can make PCR values at the beginning of the stream larger than PCR values at the + * end. This class can only be used once to read duration from a given stream, and the usage of the + * class is not thread-safe, so all calls should be made from the same thread. + */ +/* package */ final class TsDurationReader { + + private static final int TIMESTAMP_SEARCH_BYTES = 600 * TsExtractor.TS_PACKET_SIZE; + + private final TimestampAdjuster pcrTimestampAdjuster; + private final ParsableByteArray packetBuffer; + + private boolean isDurationRead; + private boolean isFirstPcrValueRead; + private boolean isLastPcrValueRead; + + private long firstPcrValue; + private long lastPcrValue; + private long durationUs; + + /* package */ TsDurationReader() { + pcrTimestampAdjuster = new TimestampAdjuster(/* firstSampleTimestampUs= */ 0); + firstPcrValue = C.TIME_UNSET; + lastPcrValue = C.TIME_UNSET; + durationUs = C.TIME_UNSET; + packetBuffer = new ParsableByteArray(); + } + + /** Returns true if a TS duration has been read. */ + public boolean isDurationReadFinished() { + return isDurationRead; + } + + /** + * Reads a TS duration from the input, using the given PCR PID. + * + *

This reader reads the duration by reading PCR values of the PCR PID packets at the start and + * at the end of the stream, calculating the difference, and converting that into stream duration. + * + * @param input The {@link ExtractorInput} from which data should be read. + * @param seekPositionHolder If {@link Extractor#RESULT_SEEK} is returned, this holder is updated + * to hold the position of the required seek. + * @param pcrPid The PID of the packet stream within this TS stream that contains PCR values. + * @return One of the {@code RESULT_} values defined in {@link Extractor}. + * @throws IOException If an error occurred reading from the input. + * @throws InterruptedException If the thread was interrupted. + */ + public @Extractor.ReadResult int readDuration( + ExtractorInput input, PositionHolder seekPositionHolder, int pcrPid) + throws IOException, InterruptedException { + if (pcrPid <= 0) { + return finishReadDuration(input); + } + if (!isLastPcrValueRead) { + return readLastPcrValue(input, seekPositionHolder, pcrPid); + } + if (lastPcrValue == C.TIME_UNSET) { + return finishReadDuration(input); + } + if (!isFirstPcrValueRead) { + return readFirstPcrValue(input, seekPositionHolder, pcrPid); + } + if (firstPcrValue == C.TIME_UNSET) { + return finishReadDuration(input); + } + + long minPcrPositionUs = pcrTimestampAdjuster.adjustTsTimestamp(firstPcrValue); + long maxPcrPositionUs = pcrTimestampAdjuster.adjustTsTimestamp(lastPcrValue); + durationUs = maxPcrPositionUs - minPcrPositionUs; + return finishReadDuration(input); + } + + /** + * Returns the duration last read from {@link #readDuration(ExtractorInput, PositionHolder, int)}. + */ + public long getDurationUs() { + return durationUs; + } + + /** + * Returns the {@link TimestampAdjuster} that this class uses to adjust timestamps read from the + * input TS stream. + */ + public TimestampAdjuster getPcrTimestampAdjuster() { + return pcrTimestampAdjuster; + } + + private int finishReadDuration(ExtractorInput input) { + packetBuffer.reset(Util.EMPTY_BYTE_ARRAY); + isDurationRead = true; + input.resetPeekPosition(); + return Extractor.RESULT_CONTINUE; + } + + private int readFirstPcrValue(ExtractorInput input, PositionHolder seekPositionHolder, int pcrPid) + throws IOException, InterruptedException { + int bytesToSearch = (int) Math.min(TIMESTAMP_SEARCH_BYTES, input.getLength()); + int searchStartPosition = 0; + if (input.getPosition() != searchStartPosition) { + seekPositionHolder.position = searchStartPosition; + return Extractor.RESULT_SEEK; + } + + packetBuffer.reset(bytesToSearch); + input.resetPeekPosition(); + input.peekFully(packetBuffer.data, /* offset= */ 0, bytesToSearch); + + firstPcrValue = readFirstPcrValueFromBuffer(packetBuffer, pcrPid); + isFirstPcrValueRead = true; + return Extractor.RESULT_CONTINUE; + } + + private long readFirstPcrValueFromBuffer(ParsableByteArray packetBuffer, int pcrPid) { + int searchStartPosition = packetBuffer.getPosition(); + int searchEndPosition = packetBuffer.limit(); + for (int searchPosition = searchStartPosition; + searchPosition < searchEndPosition; + searchPosition++) { + if (packetBuffer.data[searchPosition] != TsExtractor.TS_SYNC_BYTE) { + continue; + } + long pcrValue = TsUtil.readPcrFromPacket(packetBuffer, searchPosition, pcrPid); + if (pcrValue != C.TIME_UNSET) { + return pcrValue; + } + } + return C.TIME_UNSET; + } + + private int readLastPcrValue(ExtractorInput input, PositionHolder seekPositionHolder, int pcrPid) + throws IOException, InterruptedException { + long inputLength = input.getLength(); + int bytesToSearch = (int) Math.min(TIMESTAMP_SEARCH_BYTES, inputLength); + long searchStartPosition = inputLength - bytesToSearch; + if (input.getPosition() != searchStartPosition) { + seekPositionHolder.position = searchStartPosition; + return Extractor.RESULT_SEEK; + } + + packetBuffer.reset(bytesToSearch); + input.resetPeekPosition(); + input.peekFully(packetBuffer.data, /* offset= */ 0, bytesToSearch); + + lastPcrValue = readLastPcrValueFromBuffer(packetBuffer, pcrPid); + isLastPcrValueRead = true; + return Extractor.RESULT_CONTINUE; + } + + private long readLastPcrValueFromBuffer(ParsableByteArray packetBuffer, int pcrPid) { + int searchStartPosition = packetBuffer.getPosition(); + int searchEndPosition = packetBuffer.limit(); + for (int searchPosition = searchEndPosition - 1; + searchPosition >= searchStartPosition; + searchPosition--) { + if (packetBuffer.data[searchPosition] != TsExtractor.TS_SYNC_BYTE) { + continue; + } + long pcrValue = TsUtil.readPcrFromPacket(packetBuffer, searchPosition, pcrPid); + if (pcrValue != C.TIME_UNSET) { + return pcrValue; + } + } + return C.TIME_UNSET; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsExtractor.java new file mode 100644 index 0000000000..a52e56bd32 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsExtractor.java @@ -0,0 +1,698 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.FLAG_PAYLOAD_UNIT_START_INDICATOR; + +import android.util.SparseArray; +import android.util.SparseBooleanArray; +import android.util.SparseIntArray; +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.DefaultTsPayloadReaderFactory.Flags; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.DvbSubtitleInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.EsInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsPayloadReader.TrackIdGenerator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; + +/** + * Extracts data from the MPEG-2 TS container format. + */ +public final class TsExtractor implements Extractor { + + /** Factory for {@link TsExtractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new TsExtractor()}; + + /** + * Modes for the extractor. One of {@link #MODE_MULTI_PMT}, {@link #MODE_SINGLE_PMT} or {@link + * #MODE_HLS}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({MODE_MULTI_PMT, MODE_SINGLE_PMT, MODE_HLS}) + public @interface Mode {} + + /** + * Behave as defined in ISO/IEC 13818-1. + */ + public static final int MODE_MULTI_PMT = 0; + /** + * Assume only one PMT will be contained in the stream, even if more are declared by the PAT. + */ + public static final int MODE_SINGLE_PMT = 1; + /** + * Enable single PMT mode, map {@link TrackOutput}s by their type (instead of PID) and ignore + * continuity counters. + */ + public static final int MODE_HLS = 2; + + public static final int TS_STREAM_TYPE_MPA = 0x03; + public static final int TS_STREAM_TYPE_MPA_LSF = 0x04; + public static final int TS_STREAM_TYPE_AAC_ADTS = 0x0F; + public static final int TS_STREAM_TYPE_AAC_LATM = 0x11; + public static final int TS_STREAM_TYPE_AC3 = 0x81; + public static final int TS_STREAM_TYPE_DTS = 0x8A; + public static final int TS_STREAM_TYPE_HDMV_DTS = 0x82; + public static final int TS_STREAM_TYPE_E_AC3 = 0x87; + public static final int TS_STREAM_TYPE_AC4 = 0xAC; // DVB/ATSC AC-4 Descriptor + public static final int TS_STREAM_TYPE_H262 = 0x02; + public static final int TS_STREAM_TYPE_H264 = 0x1B; + public static final int TS_STREAM_TYPE_H265 = 0x24; + public static final int TS_STREAM_TYPE_ID3 = 0x15; + public static final int TS_STREAM_TYPE_SPLICE_INFO = 0x86; + public static final int TS_STREAM_TYPE_DVBSUBS = 0x59; + + public static final int TS_PACKET_SIZE = 188; + public static final int TS_SYNC_BYTE = 0x47; // First byte of each TS packet. + + private static final int TS_PAT_PID = 0; + private static final int MAX_PID_PLUS_ONE = 0x2000; + + private static final long AC3_FORMAT_IDENTIFIER = 0x41432d33; + private static final long E_AC3_FORMAT_IDENTIFIER = 0x45414333; + private static final long AC4_FORMAT_IDENTIFIER = 0x41432d34; + private static final long HEVC_FORMAT_IDENTIFIER = 0x48455643; + + private static final int BUFFER_SIZE = TS_PACKET_SIZE * 50; + private static final int SNIFF_TS_PACKET_COUNT = 5; + + private final @Mode int mode; + private final List timestampAdjusters; + private final ParsableByteArray tsPacketBuffer; + private final SparseIntArray continuityCounters; + private final TsPayloadReader.Factory payloadReaderFactory; + private final SparseArray tsPayloadReaders; // Indexed by pid + private final SparseBooleanArray trackIds; + private final SparseBooleanArray trackPids; + private final TsDurationReader durationReader; + + // Accessed only by the loading thread. + private TsBinarySearchSeeker tsBinarySearchSeeker; + private ExtractorOutput output; + private int remainingPmts; + private boolean tracksEnded; + private boolean hasOutputSeekMap; + private boolean pendingSeekToStart; + private TsPayloadReader id3Reader; + private int bytesSinceLastSync; + private int pcrPid; + + public TsExtractor() { + this(0); + } + + /** + * @param defaultTsPayloadReaderFlags A combination of {@link DefaultTsPayloadReaderFactory} + * {@code FLAG_*} values that control the behavior of the payload readers. + */ + public TsExtractor(@Flags int defaultTsPayloadReaderFlags) { + this(MODE_SINGLE_PMT, defaultTsPayloadReaderFlags); + } + + /** + * @param mode Mode for the extractor. One of {@link #MODE_MULTI_PMT}, {@link #MODE_SINGLE_PMT} + * and {@link #MODE_HLS}. + * @param defaultTsPayloadReaderFlags A combination of {@link DefaultTsPayloadReaderFactory} + * {@code FLAG_*} values that control the behavior of the payload readers. + */ + public TsExtractor(@Mode int mode, @Flags int defaultTsPayloadReaderFlags) { + this( + mode, + new TimestampAdjuster(0), + new DefaultTsPayloadReaderFactory(defaultTsPayloadReaderFlags)); + } + + /** + * @param mode Mode for the extractor. One of {@link #MODE_MULTI_PMT}, {@link #MODE_SINGLE_PMT} + * and {@link #MODE_HLS}. + * @param timestampAdjuster A timestamp adjuster for offsetting and scaling sample timestamps. + * @param payloadReaderFactory Factory for injecting a custom set of payload readers. + */ + public TsExtractor( + @Mode int mode, + TimestampAdjuster timestampAdjuster, + TsPayloadReader.Factory payloadReaderFactory) { + this.payloadReaderFactory = Assertions.checkNotNull(payloadReaderFactory); + this.mode = mode; + if (mode == MODE_SINGLE_PMT || mode == MODE_HLS) { + timestampAdjusters = Collections.singletonList(timestampAdjuster); + } else { + timestampAdjusters = new ArrayList<>(); + timestampAdjusters.add(timestampAdjuster); + } + tsPacketBuffer = new ParsableByteArray(new byte[BUFFER_SIZE], 0); + trackIds = new SparseBooleanArray(); + trackPids = new SparseBooleanArray(); + tsPayloadReaders = new SparseArray<>(); + continuityCounters = new SparseIntArray(); + durationReader = new TsDurationReader(); + pcrPid = -1; + resetPayloadReaders(); + } + + // Extractor implementation. + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + byte[] buffer = tsPacketBuffer.data; + input.peekFully(buffer, 0, TS_PACKET_SIZE * SNIFF_TS_PACKET_COUNT); + for (int startPosCandidate = 0; startPosCandidate < TS_PACKET_SIZE; startPosCandidate++) { + // Try to identify at least SNIFF_TS_PACKET_COUNT packets starting with TS_SYNC_BYTE. + boolean isSyncBytePatternCorrect = true; + for (int i = 0; i < SNIFF_TS_PACKET_COUNT; i++) { + if (buffer[startPosCandidate + i * TS_PACKET_SIZE] != TS_SYNC_BYTE) { + isSyncBytePatternCorrect = false; + break; + } + } + if (isSyncBytePatternCorrect) { + input.skipFully(startPosCandidate); + return true; + } + } + return false; + } + + @Override + public void init(ExtractorOutput output) { + this.output = output; + } + + @Override + public void seek(long position, long timeUs) { + Assertions.checkState(mode != MODE_HLS); + int timestampAdjustersCount = timestampAdjusters.size(); + for (int i = 0; i < timestampAdjustersCount; i++) { + TimestampAdjuster timestampAdjuster = timestampAdjusters.get(i); + boolean hasNotEncounteredFirstTimestamp = + timestampAdjuster.getTimestampOffsetUs() == C.TIME_UNSET; + if (hasNotEncounteredFirstTimestamp + || (timestampAdjuster.getTimestampOffsetUs() != 0 + && timestampAdjuster.getFirstSampleTimestampUs() != timeUs)) { + // - If a track in the TS stream has not encountered any sample, it's going to treat the + // first sample encountered as timestamp 0, which is incorrect. So we have to set the first + // sample timestamp for that track manually. + // - If the timestamp adjuster has its timestamp set manually before, and now we seek to a + // different position, we need to set the first sample timestamp manually again. + timestampAdjuster.reset(); + timestampAdjuster.setFirstSampleTimestampUs(timeUs); + } + } + if (timeUs != 0 && tsBinarySearchSeeker != null) { + tsBinarySearchSeeker.setSeekTargetUs(timeUs); + } + tsPacketBuffer.reset(); + continuityCounters.clear(); + for (int i = 0; i < tsPayloadReaders.size(); i++) { + tsPayloadReaders.valueAt(i).seek(); + } + bytesSinceLastSync = 0; + } + + @Override + public void release() { + // Do nothing + } + + @Override + public @ReadResult int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + long inputLength = input.getLength(); + if (tracksEnded) { + boolean canReadDuration = inputLength != C.LENGTH_UNSET && mode != MODE_HLS; + if (canReadDuration && !durationReader.isDurationReadFinished()) { + return durationReader.readDuration(input, seekPosition, pcrPid); + } + maybeOutputSeekMap(inputLength); + + if (pendingSeekToStart) { + pendingSeekToStart = false; + seek(/* position= */ 0, /* timeUs= */ 0); + if (input.getPosition() != 0) { + seekPosition.position = 0; + return RESULT_SEEK; + } + } + + if (tsBinarySearchSeeker != null && tsBinarySearchSeeker.isSeeking()) { + return tsBinarySearchSeeker.handlePendingSeek(input, seekPosition); + } + } + + if (!fillBufferWithAtLeastOnePacket(input)) { + return RESULT_END_OF_INPUT; + } + + int endOfPacket = findEndOfFirstTsPacketInBuffer(); + int limit = tsPacketBuffer.limit(); + if (endOfPacket > limit) { + return RESULT_CONTINUE; + } + + @TsPayloadReader.Flags int packetHeaderFlags = 0; + + // Note: See ISO/IEC 13818-1, section 2.4.3.2 for details of the header format. + int tsPacketHeader = tsPacketBuffer.readInt(); + if ((tsPacketHeader & 0x800000) != 0) { // transport_error_indicator + // There are uncorrectable errors in this packet. + tsPacketBuffer.setPosition(endOfPacket); + return RESULT_CONTINUE; + } + packetHeaderFlags |= (tsPacketHeader & 0x400000) != 0 ? FLAG_PAYLOAD_UNIT_START_INDICATOR : 0; + // Ignoring transport_priority (tsPacketHeader & 0x200000) + int pid = (tsPacketHeader & 0x1FFF00) >> 8; + // Ignoring transport_scrambling_control (tsPacketHeader & 0xC0) + boolean adaptationFieldExists = (tsPacketHeader & 0x20) != 0; + boolean payloadExists = (tsPacketHeader & 0x10) != 0; + + TsPayloadReader payloadReader = payloadExists ? tsPayloadReaders.get(pid) : null; + if (payloadReader == null) { + tsPacketBuffer.setPosition(endOfPacket); + return RESULT_CONTINUE; + } + + // Discontinuity check. + if (mode != MODE_HLS) { + int continuityCounter = tsPacketHeader & 0xF; + int previousCounter = continuityCounters.get(pid, continuityCounter - 1); + continuityCounters.put(pid, continuityCounter); + if (previousCounter == continuityCounter) { + // Duplicate packet found. + tsPacketBuffer.setPosition(endOfPacket); + return RESULT_CONTINUE; + } else if (continuityCounter != ((previousCounter + 1) & 0xF)) { + // Discontinuity found. + payloadReader.seek(); + } + } + + // Skip the adaptation field. + if (adaptationFieldExists) { + int adaptationFieldLength = tsPacketBuffer.readUnsignedByte(); + int adaptationFieldFlags = tsPacketBuffer.readUnsignedByte(); + + packetHeaderFlags |= + (adaptationFieldFlags & 0x40) != 0 // random_access_indicator. + ? TsPayloadReader.FLAG_RANDOM_ACCESS_INDICATOR + : 0; + tsPacketBuffer.skipBytes(adaptationFieldLength - 1 /* flags */); + } + + // Read the payload. + boolean wereTracksEnded = tracksEnded; + if (shouldConsumePacketPayload(pid)) { + tsPacketBuffer.setLimit(endOfPacket); + payloadReader.consume(tsPacketBuffer, packetHeaderFlags); + tsPacketBuffer.setLimit(limit); + } + if (mode != MODE_HLS && !wereTracksEnded && tracksEnded && inputLength != C.LENGTH_UNSET) { + // We have read all tracks from all PMTs in this non-live stream. Now seek to the beginning + // and read again to make sure we output all media, including any contained in packets prior + // to those containing the track information. + pendingSeekToStart = true; + } + + tsPacketBuffer.setPosition(endOfPacket); + return RESULT_CONTINUE; + } + + // Internals. + + private void maybeOutputSeekMap(long inputLength) { + if (!hasOutputSeekMap) { + hasOutputSeekMap = true; + if (durationReader.getDurationUs() != C.TIME_UNSET) { + tsBinarySearchSeeker = + new TsBinarySearchSeeker( + durationReader.getPcrTimestampAdjuster(), + durationReader.getDurationUs(), + inputLength, + pcrPid); + output.seekMap(tsBinarySearchSeeker.getSeekMap()); + } else { + output.seekMap(new SeekMap.Unseekable(durationReader.getDurationUs())); + } + } + } + + private boolean fillBufferWithAtLeastOnePacket(ExtractorInput input) + throws IOException, InterruptedException { + byte[] data = tsPacketBuffer.data; + // Shift bytes to the start of the buffer if there isn't enough space left at the end. + if (BUFFER_SIZE - tsPacketBuffer.getPosition() < TS_PACKET_SIZE) { + int bytesLeft = tsPacketBuffer.bytesLeft(); + if (bytesLeft > 0) { + System.arraycopy(data, tsPacketBuffer.getPosition(), data, 0, bytesLeft); + } + tsPacketBuffer.reset(data, bytesLeft); + } + // Read more bytes until we have at least one packet. + while (tsPacketBuffer.bytesLeft() < TS_PACKET_SIZE) { + int limit = tsPacketBuffer.limit(); + int read = input.read(data, limit, BUFFER_SIZE - limit); + if (read == C.RESULT_END_OF_INPUT) { + return false; + } + tsPacketBuffer.setLimit(limit + read); + } + return true; + } + + /** + * Returns the position of the end of the first TS packet (exclusive) in the packet buffer. + * + *

This may be a position beyond the buffer limit if the packet has not been read fully into + * the buffer, or if no packet could be found within the buffer. + */ + private int findEndOfFirstTsPacketInBuffer() throws ParserException { + int searchStart = tsPacketBuffer.getPosition(); + int limit = tsPacketBuffer.limit(); + int syncBytePosition = TsUtil.findSyncBytePosition(tsPacketBuffer.data, searchStart, limit); + // Discard all bytes before the sync byte. + // If sync byte is not found, this means discard the whole buffer. + tsPacketBuffer.setPosition(syncBytePosition); + int endOfPacket = syncBytePosition + TS_PACKET_SIZE; + if (endOfPacket > limit) { + bytesSinceLastSync += syncBytePosition - searchStart; + if (mode == MODE_HLS && bytesSinceLastSync > TS_PACKET_SIZE * 2) { + throw new ParserException("Cannot find sync byte. Most likely not a Transport Stream."); + } + } else { + // We have found a packet within the buffer. + bytesSinceLastSync = 0; + } + return endOfPacket; + } + + private boolean shouldConsumePacketPayload(int packetPid) { + return mode == MODE_HLS + || tracksEnded + || !trackPids.get(packetPid, /* valueIfKeyNotFound= */ false); // It's a PSI packet + } + + private void resetPayloadReaders() { + trackIds.clear(); + tsPayloadReaders.clear(); + SparseArray initialPayloadReaders = + payloadReaderFactory.createInitialPayloadReaders(); + int initialPayloadReadersSize = initialPayloadReaders.size(); + for (int i = 0; i < initialPayloadReadersSize; i++) { + tsPayloadReaders.put(initialPayloadReaders.keyAt(i), initialPayloadReaders.valueAt(i)); + } + tsPayloadReaders.put(TS_PAT_PID, new SectionReader(new PatReader())); + id3Reader = null; + } + + /** + * Parses Program Association Table data. + */ + private class PatReader implements SectionPayloadReader { + + private final ParsableBitArray patScratch; + + public PatReader() { + patScratch = new ParsableBitArray(new byte[4]); + } + + @Override + public void init(TimestampAdjuster timestampAdjuster, ExtractorOutput extractorOutput, + TrackIdGenerator idGenerator) { + // Do nothing. + } + + @Override + public void consume(ParsableByteArray sectionData) { + int tableId = sectionData.readUnsignedByte(); + if (tableId != 0x00 /* program_association_section */) { + // See ISO/IEC 13818-1, section 2.4.4.4 for more information on table id assignment. + return; + } + // section_syntax_indicator(1), '0'(1), reserved(2), section_length(12), + // transport_stream_id (16), reserved (2), version_number (5), current_next_indicator (1), + // section_number (8), last_section_number (8) + sectionData.skipBytes(7); + + int programCount = sectionData.bytesLeft() / 4; + for (int i = 0; i < programCount; i++) { + sectionData.readBytes(patScratch, 4); + int programNumber = patScratch.readBits(16); + patScratch.skipBits(3); // reserved (3) + if (programNumber == 0) { + patScratch.skipBits(13); // network_PID (13) + } else { + int pid = patScratch.readBits(13); + tsPayloadReaders.put(pid, new SectionReader(new PmtReader(pid))); + remainingPmts++; + } + } + if (mode != MODE_HLS) { + tsPayloadReaders.remove(TS_PAT_PID); + } + } + + } + + /** + * Parses Program Map Table. + */ + private class PmtReader implements SectionPayloadReader { + + private static final int TS_PMT_DESC_REGISTRATION = 0x05; + private static final int TS_PMT_DESC_ISO639_LANG = 0x0A; + private static final int TS_PMT_DESC_AC3 = 0x6A; + private static final int TS_PMT_DESC_EAC3 = 0x7A; + private static final int TS_PMT_DESC_DTS = 0x7B; + private static final int TS_PMT_DESC_DVB_EXT = 0x7F; + private static final int TS_PMT_DESC_DVBSUBS = 0x59; + + private static final int TS_PMT_DESC_DVB_EXT_AC4 = 0x15; + + private final ParsableBitArray pmtScratch; + private final SparseArray trackIdToReaderScratch; + private final SparseIntArray trackIdToPidScratch; + private final int pid; + + public PmtReader(int pid) { + pmtScratch = new ParsableBitArray(new byte[5]); + trackIdToReaderScratch = new SparseArray<>(); + trackIdToPidScratch = new SparseIntArray(); + this.pid = pid; + } + + @Override + public void init(TimestampAdjuster timestampAdjuster, ExtractorOutput extractorOutput, + TrackIdGenerator idGenerator) { + // Do nothing. + } + + @Override + public void consume(ParsableByteArray sectionData) { + int tableId = sectionData.readUnsignedByte(); + if (tableId != 0x02 /* TS_program_map_section */) { + // See ISO/IEC 13818-1, section 2.4.4.4 for more information on table id assignment. + return; + } + // TimestampAdjuster assignment. + TimestampAdjuster timestampAdjuster; + if (mode == MODE_SINGLE_PMT || mode == MODE_HLS || remainingPmts == 1) { + timestampAdjuster = timestampAdjusters.get(0); + } else { + timestampAdjuster = new TimestampAdjuster( + timestampAdjusters.get(0).getFirstSampleTimestampUs()); + timestampAdjusters.add(timestampAdjuster); + } + + // section_syntax_indicator(1), '0'(1), reserved(2), section_length(12) + sectionData.skipBytes(2); + int programNumber = sectionData.readUnsignedShort(); + + // Skip 3 bytes (24 bits), including: + // reserved (2), version_number (5), current_next_indicator (1), section_number (8), + // last_section_number (8) + sectionData.skipBytes(3); + + sectionData.readBytes(pmtScratch, 2); + // reserved (3), PCR_PID (13) + pmtScratch.skipBits(3); + pcrPid = pmtScratch.readBits(13); + + // Read program_info_length. + sectionData.readBytes(pmtScratch, 2); + pmtScratch.skipBits(4); + int programInfoLength = pmtScratch.readBits(12); + + // Skip the descriptors. + sectionData.skipBytes(programInfoLength); + + if (mode == MODE_HLS && id3Reader == null) { + // Setup an ID3 track regardless of whether there's a corresponding entry, in case one + // appears intermittently during playback. See [Internal: b/20261500]. + EsInfo dummyEsInfo = new EsInfo(TS_STREAM_TYPE_ID3, null, null, Util.EMPTY_BYTE_ARRAY); + id3Reader = payloadReaderFactory.createPayloadReader(TS_STREAM_TYPE_ID3, dummyEsInfo); + id3Reader.init(timestampAdjuster, output, + new TrackIdGenerator(programNumber, TS_STREAM_TYPE_ID3, MAX_PID_PLUS_ONE)); + } + + trackIdToReaderScratch.clear(); + trackIdToPidScratch.clear(); + int remainingEntriesLength = sectionData.bytesLeft(); + while (remainingEntriesLength > 0) { + sectionData.readBytes(pmtScratch, 5); + int streamType = pmtScratch.readBits(8); + pmtScratch.skipBits(3); // reserved + int elementaryPid = pmtScratch.readBits(13); + pmtScratch.skipBits(4); // reserved + int esInfoLength = pmtScratch.readBits(12); // ES_info_length. + EsInfo esInfo = readEsInfo(sectionData, esInfoLength); + if (streamType == 0x06) { + streamType = esInfo.streamType; + } + remainingEntriesLength -= esInfoLength + 5; + + int trackId = mode == MODE_HLS ? streamType : elementaryPid; + if (trackIds.get(trackId)) { + continue; + } + + TsPayloadReader reader = mode == MODE_HLS && streamType == TS_STREAM_TYPE_ID3 ? id3Reader + : payloadReaderFactory.createPayloadReader(streamType, esInfo); + if (mode != MODE_HLS + || elementaryPid < trackIdToPidScratch.get(trackId, MAX_PID_PLUS_ONE)) { + trackIdToPidScratch.put(trackId, elementaryPid); + trackIdToReaderScratch.put(trackId, reader); + } + } + + int trackIdCount = trackIdToPidScratch.size(); + for (int i = 0; i < trackIdCount; i++) { + int trackId = trackIdToPidScratch.keyAt(i); + int trackPid = trackIdToPidScratch.valueAt(i); + trackIds.put(trackId, true); + trackPids.put(trackPid, true); + TsPayloadReader reader = trackIdToReaderScratch.valueAt(i); + if (reader != null) { + if (reader != id3Reader) { + reader.init(timestampAdjuster, output, + new TrackIdGenerator(programNumber, trackId, MAX_PID_PLUS_ONE)); + } + tsPayloadReaders.put(trackPid, reader); + } + } + + if (mode == MODE_HLS) { + if (!tracksEnded) { + output.endTracks(); + remainingPmts = 0; + tracksEnded = true; + } + } else { + tsPayloadReaders.remove(pid); + remainingPmts = mode == MODE_SINGLE_PMT ? 0 : remainingPmts - 1; + if (remainingPmts == 0) { + output.endTracks(); + tracksEnded = true; + } + } + } + + /** + * Returns the stream info read from the available descriptors. Sets {@code data}'s position to + * the end of the descriptors. + * + * @param data A buffer with its position set to the start of the first descriptor. + * @param length The length of descriptors to read from the current position in {@code data}. + * @return The stream info read from the available descriptors. + */ + private EsInfo readEsInfo(ParsableByteArray data, int length) { + int descriptorsStartPosition = data.getPosition(); + int descriptorsEndPosition = descriptorsStartPosition + length; + int streamType = -1; + String language = null; + List dvbSubtitleInfos = null; + while (data.getPosition() < descriptorsEndPosition) { + int descriptorTag = data.readUnsignedByte(); + int descriptorLength = data.readUnsignedByte(); + int positionOfNextDescriptor = data.getPosition() + descriptorLength; + if (descriptorTag == TS_PMT_DESC_REGISTRATION) { // registration_descriptor + long formatIdentifier = data.readUnsignedInt(); + if (formatIdentifier == AC3_FORMAT_IDENTIFIER) { + streamType = TS_STREAM_TYPE_AC3; + } else if (formatIdentifier == E_AC3_FORMAT_IDENTIFIER) { + streamType = TS_STREAM_TYPE_E_AC3; + } else if (formatIdentifier == AC4_FORMAT_IDENTIFIER) { + streamType = TS_STREAM_TYPE_AC4; + } else if (formatIdentifier == HEVC_FORMAT_IDENTIFIER) { + streamType = TS_STREAM_TYPE_H265; + } + } else if (descriptorTag == TS_PMT_DESC_AC3) { // AC-3_descriptor in DVB (ETSI EN 300 468) + streamType = TS_STREAM_TYPE_AC3; + } else if (descriptorTag == TS_PMT_DESC_EAC3) { // enhanced_AC-3_descriptor + streamType = TS_STREAM_TYPE_E_AC3; + } else if (descriptorTag == TS_PMT_DESC_DVB_EXT) { + // Extension descriptor in DVB (ETSI EN 300 468). + int descriptorTagExt = data.readUnsignedByte(); + if (descriptorTagExt == TS_PMT_DESC_DVB_EXT_AC4) { + // AC-4_descriptor in DVB (ETSI EN 300 468). + streamType = TS_STREAM_TYPE_AC4; + } + } else if (descriptorTag == TS_PMT_DESC_DTS) { // DTS_descriptor + streamType = TS_STREAM_TYPE_DTS; + } else if (descriptorTag == TS_PMT_DESC_ISO639_LANG) { + language = data.readString(3).trim(); + // Audio type is ignored. + } else if (descriptorTag == TS_PMT_DESC_DVBSUBS) { + streamType = TS_STREAM_TYPE_DVBSUBS; + dvbSubtitleInfos = new ArrayList<>(); + while (data.getPosition() < positionOfNextDescriptor) { + String dvbLanguage = data.readString(3).trim(); + int dvbSubtitlingType = data.readUnsignedByte(); + byte[] initializationData = new byte[4]; + data.readBytes(initializationData, 0, 4); + dvbSubtitleInfos.add(new DvbSubtitleInfo(dvbLanguage, dvbSubtitlingType, + initializationData)); + } + } + // Skip unused bytes of current descriptor. + data.skipBytes(positionOfNextDescriptor - data.getPosition()); + } + data.setPosition(descriptorsEndPosition); + return new EsInfo(streamType, language, dvbSubtitleInfos, + Arrays.copyOfRange(data.data, descriptorsStartPosition, descriptorsEndPosition)); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsPayloadReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsPayloadReader.java new file mode 100644 index 0000000000..940c1c7937 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsPayloadReader.java @@ -0,0 +1,232 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import android.util.SparseArray; +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Collections; +import java.util.List; + +/** + * Parses TS packet payload data. + */ +public interface TsPayloadReader { + + /** + * Factory of {@link TsPayloadReader} instances. + */ + interface Factory { + + /** + * Returns the initial mapping from PIDs to payload readers. + *

+ * This method allows the injection of payload readers for reserved PIDs, excluding PID 0. + * + * @return A {@link SparseArray} that maps PIDs to payload readers. + */ + SparseArray createInitialPayloadReaders(); + + /** + * Returns a {@link TsPayloadReader} for a given stream type and elementary stream information. + * May return null if the stream type is not supported. + * + * @param streamType Stream type value as defined in the PMT entry or associated descriptors. + * @param esInfo Information associated to the elementary stream provided in the PMT. + * @return A {@link TsPayloadReader} for the packet stream carried by the provided pid. + * {@code null} if the stream is not supported. + */ + TsPayloadReader createPayloadReader(int streamType, EsInfo esInfo); + + } + + /** + * Holds information associated with a PMT entry. + */ + final class EsInfo { + + public final int streamType; + public final String language; + public final List dvbSubtitleInfos; + public final byte[] descriptorBytes; + + /** + * @param streamType The type of the stream as defined by the + * {@link TsExtractor}{@code .TS_STREAM_TYPE_*}. + * @param language The language of the stream, as defined by ISO/IEC 13818-1, section 2.6.18. + * @param dvbSubtitleInfos Information about DVB subtitles associated to the stream. + * @param descriptorBytes The descriptor bytes associated to the stream. + */ + public EsInfo(int streamType, String language, List dvbSubtitleInfos, + byte[] descriptorBytes) { + this.streamType = streamType; + this.language = language; + this.dvbSubtitleInfos = + dvbSubtitleInfos == null + ? Collections.emptyList() + : Collections.unmodifiableList(dvbSubtitleInfos); + this.descriptorBytes = descriptorBytes; + } + + } + + /** + * Holds information about a DVB subtitle, as defined in ETSI EN 300 468 V1.11.1 section 6.2.41. + */ + final class DvbSubtitleInfo { + + public final String language; + public final int type; + public final byte[] initializationData; + + /** + * @param language The ISO 639-2 three-letter language code. + * @param type The subtitling type. + * @param initializationData The composition and ancillary page ids. + */ + public DvbSubtitleInfo(String language, int type, byte[] initializationData) { + this.language = language; + this.type = type; + this.initializationData = initializationData; + } + + } + + /** + * Generates track ids for initializing {@link TsPayloadReader}s' {@link TrackOutput}s. + */ + final class TrackIdGenerator { + + private static final int ID_UNSET = Integer.MIN_VALUE; + + private final String formatIdPrefix; + private final int firstTrackId; + private final int trackIdIncrement; + private int trackId; + private String formatId; + + public TrackIdGenerator(int firstTrackId, int trackIdIncrement) { + this(ID_UNSET, firstTrackId, trackIdIncrement); + } + + public TrackIdGenerator(int programNumber, int firstTrackId, int trackIdIncrement) { + this.formatIdPrefix = programNumber != ID_UNSET ? programNumber + "/" : ""; + this.firstTrackId = firstTrackId; + this.trackIdIncrement = trackIdIncrement; + trackId = ID_UNSET; + } + + /** + * Generates a new set of track and track format ids. Must be called before {@code get*} + * methods. + */ + public void generateNewId() { + trackId = trackId == ID_UNSET ? firstTrackId : trackId + trackIdIncrement; + formatId = formatIdPrefix + trackId; + } + + /** + * Returns the last generated track id. Must be called after the first {@link #generateNewId()} + * call. + * + * @return The last generated track id. + */ + public int getTrackId() { + maybeThrowUninitializedError(); + return trackId; + } + + /** + * Returns the last generated format id, with the format {@code "programNumber/trackId"}. If no + * {@code programNumber} was provided, the {@code trackId} alone is used as format id. Must be + * called after the first {@link #generateNewId()} call. + * + * @return The last generated format id, with the format {@code "programNumber/trackId"}. If no + * {@code programNumber} was provided, the {@code trackId} alone is used as + * format id. + */ + public String getFormatId() { + maybeThrowUninitializedError(); + return formatId; + } + + private void maybeThrowUninitializedError() { + if (trackId == ID_UNSET) { + throw new IllegalStateException("generateNewId() must be called before retrieving ids."); + } + } + + } + + /** + * Contextual flags indicating the presence of indicators in the TS packet or PES packet headers. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = { + FLAG_PAYLOAD_UNIT_START_INDICATOR, + FLAG_RANDOM_ACCESS_INDICATOR, + FLAG_DATA_ALIGNMENT_INDICATOR + }) + @interface Flags {} + + /** Indicates the presence of the payload_unit_start_indicator in the TS packet header. */ + int FLAG_PAYLOAD_UNIT_START_INDICATOR = 1; + /** + * Indicates the presence of the random_access_indicator in the TS packet header adaptation field. + */ + int FLAG_RANDOM_ACCESS_INDICATOR = 1 << 1; + /** Indicates the presence of the data_alignment_indicator in the PES header. */ + int FLAG_DATA_ALIGNMENT_INDICATOR = 1 << 2; + + /** + * Initializes the payload reader. + * + * @param timestampAdjuster A timestamp adjuster for offsetting and scaling sample timestamps. + * @param extractorOutput The {@link ExtractorOutput} that receives the extracted data. + * @param idGenerator A {@link PesReader.TrackIdGenerator} that generates unique track ids for the + * {@link TrackOutput}s. + */ + void init(TimestampAdjuster timestampAdjuster, ExtractorOutput extractorOutput, + TrackIdGenerator idGenerator); + + /** + * Notifies the reader that a seek has occurred. + * + *

Following a call to this method, the data passed to the next invocation of {@link #consume} + * will not be a continuation of the data that was previously passed. Hence the reader should + * reset any internal state. + */ + void seek(); + + /** + * Consumes the payload of a TS packet. + * + * @param data The TS packet. The position will be set to the start of the payload. + * @param flags See {@link Flags}. + * @throws ParserException If the payload could not be parsed. + */ + void consume(ParsableByteArray data, @Flags int flags) throws ParserException; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsUtil.java new file mode 100644 index 0000000000..8cd24ff1e9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/TsUtil.java @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; + +/** Utilities method for extracting MPEG-TS streams. */ +public final class TsUtil { + /** + * Returns the position of the first TS_SYNC_BYTE within the range [startPosition, limitPosition) + * from the provided data array, or returns limitPosition if sync byte could not be found. + */ + public static int findSyncBytePosition(byte[] data, int startPosition, int limitPosition) { + int position = startPosition; + while (position < limitPosition && data[position] != TsExtractor.TS_SYNC_BYTE) { + position++; + } + return position; + } + + /** + * Returns the PCR value read from a given TS packet. + * + * @param packetBuffer The buffer that holds the packet. + * @param startOfPacket The starting position of the packet in the buffer. + * @param pcrPid The PID for valid packets that contain PCR values. + * @return The PCR value read from the packet, if its PID is equal to {@code pcrPid} and it + * contains a valid PCR value. Returns {@link C#TIME_UNSET} otherwise. + */ + public static long readPcrFromPacket( + ParsableByteArray packetBuffer, int startOfPacket, int pcrPid) { + packetBuffer.setPosition(startOfPacket); + if (packetBuffer.bytesLeft() < 5) { + // Header = 4 bytes, adaptationFieldLength = 1 byte. + return C.TIME_UNSET; + } + // Note: See ISO/IEC 13818-1, section 2.4.3.2 for details of the header format. + int tsPacketHeader = packetBuffer.readInt(); + if ((tsPacketHeader & 0x800000) != 0) { + // transport_error_indicator != 0 means there are uncorrectable errors in this packet. + return C.TIME_UNSET; + } + int pid = (tsPacketHeader & 0x1FFF00) >> 8; + if (pid != pcrPid) { + return C.TIME_UNSET; + } + boolean adaptationFieldExists = (tsPacketHeader & 0x20) != 0; + if (!adaptationFieldExists) { + return C.TIME_UNSET; + } + + int adaptationFieldLength = packetBuffer.readUnsignedByte(); + if (adaptationFieldLength >= 7 && packetBuffer.bytesLeft() >= 7) { + int flags = packetBuffer.readUnsignedByte(); + boolean pcrFlagSet = (flags & 0x10) == 0x10; + if (pcrFlagSet) { + byte[] pcrBytes = new byte[6]; + packetBuffer.readBytes(pcrBytes, /* offset= */ 0, pcrBytes.length); + return readPcrValueFromPcrBytes(pcrBytes); + } + } + return C.TIME_UNSET; + } + + /** + * Returns the value of PCR base - first 33 bits in big endian order from the PCR bytes. + * + *

We ignore PCR Ext, because it's too small to have any significance. + */ + private static long readPcrValueFromPcrBytes(byte[] pcrBytes) { + return (pcrBytes[0] & 0xFFL) << 25 + | (pcrBytes[1] & 0xFFL) << 17 + | (pcrBytes[2] & 0xFFL) << 9 + | (pcrBytes[3] & 0xFFL) << 1 + | (pcrBytes[4] & 0xFFL) >> 7; + } + + private TsUtil() { + // Prevent instantiation. + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/UserDataReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/UserDataReader.java new file mode 100644 index 0000000000..fb56fe379c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/ts/UserDataReader.java @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea.CeaUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.List; + +/** Consumes user data, outputting contained CEA-608/708 messages to a {@link TrackOutput}. */ +/* package */ final class UserDataReader { + + private static final int USER_DATA_START_CODE = 0x0001B2; + + private final List closedCaptionFormats; + private final TrackOutput[] outputs; + + public UserDataReader(List closedCaptionFormats) { + this.closedCaptionFormats = closedCaptionFormats; + outputs = new TrackOutput[closedCaptionFormats.size()]; + } + + public void createTracks( + ExtractorOutput extractorOutput, TsPayloadReader.TrackIdGenerator idGenerator) { + for (int i = 0; i < outputs.length; i++) { + idGenerator.generateNewId(); + TrackOutput output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_TEXT); + Format channelFormat = closedCaptionFormats.get(i); + String channelMimeType = channelFormat.sampleMimeType; + Assertions.checkArgument( + MimeTypes.APPLICATION_CEA608.equals(channelMimeType) + || MimeTypes.APPLICATION_CEA708.equals(channelMimeType), + "Invalid closed caption mime type provided: " + channelMimeType); + output.format( + Format.createTextSampleFormat( + idGenerator.getFormatId(), + channelMimeType, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + channelFormat.selectionFlags, + channelFormat.language, + channelFormat.accessibilityChannel, + /* drmInitData= */ null, + Format.OFFSET_SAMPLE_RELATIVE, + channelFormat.initializationData)); + outputs[i] = output; + } + } + + public void consume(long pesTimeUs, ParsableByteArray userDataPayload) { + if (userDataPayload.bytesLeft() < 9) { + return; + } + int userDataStartCode = userDataPayload.readInt(); + int userDataIdentifier = userDataPayload.readInt(); + int userDataTypeCode = userDataPayload.readUnsignedByte(); + if (userDataStartCode == USER_DATA_START_CODE + && userDataIdentifier == CeaUtil.USER_DATA_IDENTIFIER_GA94 + && userDataTypeCode == CeaUtil.USER_DATA_TYPE_CODE_MPEG_CC) { + CeaUtil.consumeCcData(pesTimeUs, userDataPayload, outputs); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavExtractor.java new file mode 100644 index 0000000000..d4ac3ef8e1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavExtractor.java @@ -0,0 +1,562 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.wav; + +import android.util.Pair; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.WavUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import org.checkerframework.checker.nullness.qual.EnsuresNonNull; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * Extracts data from WAV byte streams. + */ +public final class WavExtractor implements Extractor { + + /** + * When outputting PCM data to a {@link TrackOutput}, we can choose how many frames are grouped + * into each sample, and hence each sample's duration. This is the target number of samples to + * output for each second of media, meaning that each sample will have a duration of ~100ms. + */ + private static final int TARGET_SAMPLES_PER_SECOND = 10; + + /** Factory for {@link WavExtractor} instances. */ + public static final ExtractorsFactory FACTORY = () -> new Extractor[] {new WavExtractor()}; + + @MonotonicNonNull private ExtractorOutput extractorOutput; + @MonotonicNonNull private TrackOutput trackOutput; + @MonotonicNonNull private OutputWriter outputWriter; + private int dataStartPosition; + private long dataEndPosition; + + public WavExtractor() { + dataStartPosition = C.POSITION_UNSET; + dataEndPosition = C.POSITION_UNSET; + } + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + return WavHeaderReader.peek(input) != null; + } + + @Override + public void init(ExtractorOutput output) { + extractorOutput = output; + trackOutput = output.track(0, C.TRACK_TYPE_AUDIO); + output.endTracks(); + } + + @Override + public void seek(long position, long timeUs) { + if (outputWriter != null) { + outputWriter.reset(timeUs); + } + } + + @Override + public void release() { + // Do nothing + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + assertInitialized(); + if (outputWriter == null) { + WavHeader header = WavHeaderReader.peek(input); + if (header == null) { + // Should only happen if the media wasn't sniffed. + throw new ParserException("Unsupported or unrecognized wav header."); + } + + if (header.formatType == WavUtil.TYPE_IMA_ADPCM) { + outputWriter = new ImaAdPcmOutputWriter(extractorOutput, trackOutput, header); + } else if (header.formatType == WavUtil.TYPE_ALAW) { + outputWriter = + new PassthroughOutputWriter( + extractorOutput, + trackOutput, + header, + MimeTypes.AUDIO_ALAW, + /* pcmEncoding= */ Format.NO_VALUE); + } else if (header.formatType == WavUtil.TYPE_MLAW) { + outputWriter = + new PassthroughOutputWriter( + extractorOutput, + trackOutput, + header, + MimeTypes.AUDIO_MLAW, + /* pcmEncoding= */ Format.NO_VALUE); + } else { + @C.PcmEncoding + int pcmEncoding = WavUtil.getPcmEncodingForType(header.formatType, header.bitsPerSample); + if (pcmEncoding == C.ENCODING_INVALID) { + throw new ParserException("Unsupported WAV format type: " + header.formatType); + } + outputWriter = + new PassthroughOutputWriter( + extractorOutput, trackOutput, header, MimeTypes.AUDIO_RAW, pcmEncoding); + } + } + + if (dataStartPosition == C.POSITION_UNSET) { + Pair dataBounds = WavHeaderReader.skipToData(input); + dataStartPosition = dataBounds.first.intValue(); + dataEndPosition = dataBounds.second; + outputWriter.init(dataStartPosition, dataEndPosition); + } else if (input.getPosition() == 0) { + input.skipFully(dataStartPosition); + } + + Assertions.checkState(dataEndPosition != C.POSITION_UNSET); + long bytesLeft = dataEndPosition - input.getPosition(); + return outputWriter.sampleData(input, bytesLeft) ? RESULT_END_OF_INPUT : RESULT_CONTINUE; + } + + @EnsuresNonNull({"extractorOutput", "trackOutput"}) + private void assertInitialized() { + Assertions.checkStateNotNull(trackOutput); + Util.castNonNull(extractorOutput); + } + + /** Writes to the extractor's output. */ + private interface OutputWriter { + + /** + * Resets the writer. + * + * @param timeUs The new start position in microseconds. + */ + void reset(long timeUs); + + /** + * Initializes the writer. + * + *

Must be called once, before any calls to {@link #sampleData(ExtractorInput, long)}. + * + * @param dataStartPosition The byte position (inclusive) in the stream at which data starts. + * @param dataEndPosition The end position (exclusive) in the stream at which data ends. + * @throws ParserException If an error occurs initializing the writer. + */ + void init(int dataStartPosition, long dataEndPosition) throws ParserException; + + /** + * Consumes sample data from {@code input}, writing corresponding samples to the extractor's + * output. + * + *

Must not be called until after {@link #init(int, long)} has been called. + * + * @param input The input from which to read. + * @param bytesLeft The number of sample data bytes left to be read from the input. + * @return Whether the end of the sample data has been reached. + * @throws IOException If an error occurs reading from the input. + * @throws InterruptedException If the thread has been interrupted. + */ + boolean sampleData(ExtractorInput input, long bytesLeft) + throws IOException, InterruptedException; + } + + private static final class PassthroughOutputWriter implements OutputWriter { + + private final ExtractorOutput extractorOutput; + private final TrackOutput trackOutput; + private final WavHeader header; + private final Format format; + /** The target size of each output sample, in bytes. */ + private final int targetSampleSizeBytes; + + /** The time at which the writer was last {@link #reset}. */ + private long startTimeUs; + /** + * The number of bytes that have been written to {@link #trackOutput} but have yet to be + * included as part of a sample (i.e. the corresponding call to {@link + * TrackOutput#sampleMetadata} has yet to be made). + */ + private int pendingOutputBytes; + /** + * The total number of frames in samples that have been written to the trackOutput since the + * last call to {@link #reset}. + */ + private long outputFrameCount; + + public PassthroughOutputWriter( + ExtractorOutput extractorOutput, + TrackOutput trackOutput, + WavHeader header, + String mimeType, + @C.PcmEncoding int pcmEncoding) + throws ParserException { + this.extractorOutput = extractorOutput; + this.trackOutput = trackOutput; + this.header = header; + + int bytesPerFrame = header.numChannels * header.bitsPerSample / 8; + // Validate the header. Blocks are expected to correspond to single frames. + if (header.blockSize != bytesPerFrame) { + throw new ParserException( + "Expected block size: " + bytesPerFrame + "; got: " + header.blockSize); + } + + targetSampleSizeBytes = + Math.max(bytesPerFrame, header.frameRateHz * bytesPerFrame / TARGET_SAMPLES_PER_SECOND); + format = + Format.createAudioSampleFormat( + /* id= */ null, + mimeType, + /* codecs= */ null, + /* bitrate= */ header.frameRateHz * bytesPerFrame * 8, + /* maxInputSize= */ targetSampleSizeBytes, + header.numChannels, + header.frameRateHz, + pcmEncoding, + /* initializationData= */ null, + /* drmInitData= */ null, + /* selectionFlags= */ 0, + /* language= */ null); + } + + @Override + public void reset(long timeUs) { + startTimeUs = timeUs; + pendingOutputBytes = 0; + outputFrameCount = 0; + } + + @Override + public void init(int dataStartPosition, long dataEndPosition) { + extractorOutput.seekMap( + new WavSeekMap(header, /* framesPerBlock= */ 1, dataStartPosition, dataEndPosition)); + trackOutput.format(format); + } + + @Override + public boolean sampleData(ExtractorInput input, long bytesLeft) + throws IOException, InterruptedException { + // Write sample data until we've reached the target sample size, or the end of the data. + while (bytesLeft > 0 && pendingOutputBytes < targetSampleSizeBytes) { + int bytesToRead = (int) Math.min(targetSampleSizeBytes - pendingOutputBytes, bytesLeft); + int bytesAppended = trackOutput.sampleData(input, bytesToRead, true); + if (bytesAppended == RESULT_END_OF_INPUT) { + bytesLeft = 0; + } else { + pendingOutputBytes += bytesAppended; + bytesLeft -= bytesAppended; + } + } + + // Write the corresponding sample metadata. Samples must be a whole number of frames. It's + // possible that the number of pending output bytes is not a whole number of frames if the + // stream ended unexpectedly. + int bytesPerFrame = header.blockSize; + int pendingFrames = pendingOutputBytes / bytesPerFrame; + if (pendingFrames > 0) { + long timeUs = + startTimeUs + + Util.scaleLargeTimestamp( + outputFrameCount, C.MICROS_PER_SECOND, header.frameRateHz); + int size = pendingFrames * bytesPerFrame; + int offset = pendingOutputBytes - size; + trackOutput.sampleMetadata( + timeUs, C.BUFFER_FLAG_KEY_FRAME, size, offset, /* encryptionData= */ null); + outputFrameCount += pendingFrames; + pendingOutputBytes = offset; + } + + return bytesLeft <= 0; + } + } + + private static final class ImaAdPcmOutputWriter implements OutputWriter { + + private static final int[] INDEX_TABLE = { + -1, -1, -1, -1, 2, 4, 6, 8, -1, -1, -1, -1, 2, 4, 6, 8 + }; + + private static final int[] STEP_TABLE = { + 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 19, 21, 23, 25, 28, 31, 34, 37, 41, 45, 50, 55, 60, 66, + 73, 80, 88, 97, 107, 118, 130, 143, 157, 173, 190, 209, 230, 253, 279, 307, 337, 371, 408, + 449, 494, 544, 598, 658, 724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066, + 2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358, 5894, 6484, 7132, 7845, 8630, + 9493, 10442, 11487, 12635, 13899, 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, + 32767 + }; + + private final ExtractorOutput extractorOutput; + private final TrackOutput trackOutput; + private final WavHeader header; + + /** Number of frames per block of the input (yet to be decoded) data. */ + private final int framesPerBlock; + /** Target for the input (yet to be decoded) data. */ + private final byte[] inputData; + /** Target for decoded (yet to be output) data. */ + private final ParsableByteArray decodedData; + /** The target size of each output sample, in frames. */ + private final int targetSampleSizeFrames; + /** The output format. */ + private final Format format; + + /** The number of pending bytes in {@link #inputData}. */ + private int pendingInputBytes; + /** The time at which the writer was last {@link #reset}. */ + private long startTimeUs; + /** + * The number of bytes that have been written to {@link #trackOutput} but have yet to be + * included as part of a sample (i.e. the corresponding call to {@link + * TrackOutput#sampleMetadata} has yet to be made). + */ + private int pendingOutputBytes; + /** + * The total number of frames in samples that have been written to the trackOutput since the + * last call to {@link #reset}. + */ + private long outputFrameCount; + + public ImaAdPcmOutputWriter( + ExtractorOutput extractorOutput, TrackOutput trackOutput, WavHeader header) + throws ParserException { + this.extractorOutput = extractorOutput; + this.trackOutput = trackOutput; + this.header = header; + targetSampleSizeFrames = Math.max(1, header.frameRateHz / TARGET_SAMPLES_PER_SECOND); + + ParsableByteArray scratch = new ParsableByteArray(header.extraData); + scratch.readLittleEndianUnsignedShort(); + framesPerBlock = scratch.readLittleEndianUnsignedShort(); + + int numChannels = header.numChannels; + // Validate the header. This calculation is defined in "Microsoft Multimedia Standards Update + // - New Multimedia Types and Data Techniques" (1994). See the "IMA ADPCM Wave Type" and "DVI + // ADPCM Wave Type" sections, and the calculation of wSamplesPerBlock in the latter. + int expectedFramesPerBlock = + (((header.blockSize - (4 * numChannels)) * 8) / (header.bitsPerSample * numChannels)) + 1; + if (framesPerBlock != expectedFramesPerBlock) { + throw new ParserException( + "Expected frames per block: " + expectedFramesPerBlock + "; got: " + framesPerBlock); + } + + // Calculate the number of blocks we'll need to decode to obtain an output sample of the + // target sample size, and allocate suitably sized buffers for input and decoded data. + int maxBlocksToDecode = Util.ceilDivide(targetSampleSizeFrames, framesPerBlock); + inputData = new byte[maxBlocksToDecode * header.blockSize]; + decodedData = + new ParsableByteArray( + maxBlocksToDecode * numOutputFramesToBytes(framesPerBlock, numChannels)); + + // Create the format. We calculate the bitrate of the data before decoding, since this is the + // bitrate of the stream itself. + int bitrate = header.frameRateHz * header.blockSize * 8 / framesPerBlock; + format = + Format.createAudioSampleFormat( + /* id= */ null, + MimeTypes.AUDIO_RAW, + /* codecs= */ null, + bitrate, + /* maxInputSize= */ numOutputFramesToBytes(targetSampleSizeFrames, numChannels), + header.numChannels, + header.frameRateHz, + C.ENCODING_PCM_16BIT, + /* initializationData= */ null, + /* drmInitData= */ null, + /* selectionFlags= */ 0, + /* language= */ null); + } + + @Override + public void reset(long timeUs) { + pendingInputBytes = 0; + startTimeUs = timeUs; + pendingOutputBytes = 0; + outputFrameCount = 0; + } + + @Override + public void init(int dataStartPosition, long dataEndPosition) { + extractorOutput.seekMap( + new WavSeekMap(header, framesPerBlock, dataStartPosition, dataEndPosition)); + trackOutput.format(format); + } + + @Override + public boolean sampleData(ExtractorInput input, long bytesLeft) + throws IOException, InterruptedException { + // Calculate the number of additional frames that we need on the output side to complete a + // sample of the target size. + int targetFramesRemaining = + targetSampleSizeFrames - numOutputBytesToFrames(pendingOutputBytes); + // Calculate the whole number of blocks that we need to decode to obtain this many frames. + int blocksToDecode = Util.ceilDivide(targetFramesRemaining, framesPerBlock); + int targetReadBytes = blocksToDecode * header.blockSize; + + // Read input data until we've reached the target number of blocks, or the end of the data. + boolean endOfSampleData = bytesLeft == 0; + while (!endOfSampleData && pendingInputBytes < targetReadBytes) { + int bytesToRead = (int) Math.min(targetReadBytes - pendingInputBytes, bytesLeft); + int bytesAppended = input.read(inputData, pendingInputBytes, bytesToRead); + if (bytesAppended == RESULT_END_OF_INPUT) { + endOfSampleData = true; + } else { + pendingInputBytes += bytesAppended; + } + } + + int pendingBlockCount = pendingInputBytes / header.blockSize; + if (pendingBlockCount > 0) { + // We have at least one whole block to decode. + decode(inputData, pendingBlockCount, decodedData); + pendingInputBytes -= pendingBlockCount * header.blockSize; + + // Write all of the decoded data to the track output. + int decodedDataSize = decodedData.limit(); + trackOutput.sampleData(decodedData, decodedDataSize); + pendingOutputBytes += decodedDataSize; + + // Output the next sample at the target size. + int pendingOutputFrames = numOutputBytesToFrames(pendingOutputBytes); + if (pendingOutputFrames >= targetSampleSizeFrames) { + writeSampleMetadata(targetSampleSizeFrames); + } + } + + // If we've reached the end of the data, we might need to output a final partial sample. + if (endOfSampleData) { + int pendingOutputFrames = numOutputBytesToFrames(pendingOutputBytes); + if (pendingOutputFrames > 0) { + writeSampleMetadata(pendingOutputFrames); + } + } + + return endOfSampleData; + } + + private void writeSampleMetadata(int sampleFrames) { + long timeUs = + startTimeUs + + Util.scaleLargeTimestamp(outputFrameCount, C.MICROS_PER_SECOND, header.frameRateHz); + int size = numOutputFramesToBytes(sampleFrames); + int offset = pendingOutputBytes - size; + trackOutput.sampleMetadata( + timeUs, C.BUFFER_FLAG_KEY_FRAME, size, offset, /* encryptionData= */ null); + outputFrameCount += sampleFrames; + pendingOutputBytes -= size; + } + + /** + * Decodes IMA ADPCM data to 16 bit PCM. + * + * @param input The input data to decode. + * @param blockCount The number of blocks to decode. + * @param output The output into which the decoded data will be written. + */ + private void decode(byte[] input, int blockCount, ParsableByteArray output) { + for (int blockIndex = 0; blockIndex < blockCount; blockIndex++) { + for (int channelIndex = 0; channelIndex < header.numChannels; channelIndex++) { + decodeBlockForChannel(input, blockIndex, channelIndex, output.data); + } + } + int decodedDataSize = numOutputFramesToBytes(framesPerBlock * blockCount); + output.reset(decodedDataSize); + } + + private void decodeBlockForChannel( + byte[] input, int blockIndex, int channelIndex, byte[] output) { + int blockSize = header.blockSize; + int numChannels = header.numChannels; + + // The input data consists for a four byte header [Ci] for each of the N channels, followed + // by interleaved data segments [Ci-DATAj], each of which are four bytes long. + // + // [C1][C2]...[CN] [C1-Data0][C2-Data0]...[CN-Data0] [C1-Data1][C2-Data1]...[CN-Data1] etc + // + // Compute the start indices for the [Ci] and [Ci-Data0] for the current channel, as well as + // the number of data bytes for the channel in the block. + int blockStartIndex = blockIndex * blockSize; + int headerStartIndex = blockStartIndex + channelIndex * 4; + int dataStartIndex = headerStartIndex + numChannels * 4; + int dataSizeBytes = blockSize / numChannels - 4; + + // Decode initialization. Casting to a short is necessary for the most significant bit to be + // treated as -2^15 rather than 2^15. + int predictedSample = + (short) (((input[headerStartIndex + 1] & 0xFF) << 8) | (input[headerStartIndex] & 0xFF)); + int stepIndex = Math.min(input[headerStartIndex + 2] & 0xFF, 88); + int step = STEP_TABLE[stepIndex]; + + // Output the initial 16 bit PCM sample from the header. + int outputIndex = (blockIndex * framesPerBlock * numChannels + channelIndex) * 2; + output[outputIndex] = (byte) (predictedSample & 0xFF); + output[outputIndex + 1] = (byte) (predictedSample >> 8); + + // We examine each data byte twice during decode. + for (int i = 0; i < dataSizeBytes * 2; i++) { + int dataSegmentIndex = i / 8; + int dataSegmentOffset = (i / 2) % 4; + int dataIndex = dataStartIndex + (dataSegmentIndex * numChannels * 4) + dataSegmentOffset; + + int originalSample = input[dataIndex] & 0xFF; + if (i % 2 == 0) { + originalSample &= 0x0F; // Bottom four bits. + } else { + originalSample >>= 4; // Top four bits. + } + + int delta = originalSample & 0x07; + int difference = ((2 * delta + 1) * step) >> 3; + + if ((originalSample & 0x08) != 0) { + difference = -difference; + } + + predictedSample += difference; + predictedSample = Util.constrainValue(predictedSample, /* min= */ -32768, /* max= */ 32767); + + // Output the next 16 bit PCM sample to the correct position in the output. + outputIndex += 2 * numChannels; + output[outputIndex] = (byte) (predictedSample & 0xFF); + output[outputIndex + 1] = (byte) (predictedSample >> 8); + + stepIndex += INDEX_TABLE[originalSample]; + stepIndex = Util.constrainValue(stepIndex, /* min= */ 0, /* max= */ STEP_TABLE.length - 1); + step = STEP_TABLE[stepIndex]; + } + } + + private int numOutputBytesToFrames(int bytes) { + return bytes / (2 * header.numChannels); + } + + private int numOutputFramesToBytes(int frames) { + return numOutputFramesToBytes(frames, header.numChannels); + } + + private static int numOutputFramesToBytes(int frames, int numChannels) { + return frames * 2 * numChannels; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavHeader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavHeader.java new file mode 100644 index 0000000000..bc6cf8999b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavHeader.java @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.wav; + +/** Header for a WAV file. */ +/* package */ final class WavHeader { + + /** + * The format type. Standard format types are the "WAVE form Registration Number" constants + * defined in RFC 2361 Appendix A. + */ + public final int formatType; + /** The number of channels. */ + public final int numChannels; + /** The sample rate in Hertz. */ + public final int frameRateHz; + /** The average bytes per second for the sample data. */ + public final int averageBytesPerSecond; + /** The block size in bytes. */ + public final int blockSize; + /** Bits per sample for a single channel. */ + public final int bitsPerSample; + /** Extra data appended to the format chunk of the header. */ + public final byte[] extraData; + + public WavHeader( + int formatType, + int numChannels, + int frameRateHz, + int averageBytesPerSecond, + int blockSize, + int bitsPerSample, + byte[] extraData) { + this.formatType = formatType; + this.numChannels = numChannels; + this.frameRateHz = frameRateHz; + this.averageBytesPerSecond = averageBytesPerSecond; + this.blockSize = blockSize; + this.bitsPerSample = bitsPerSample; + this.extraData = extraData; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavHeaderReader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavHeaderReader.java new file mode 100644 index 0000000000..1c36aaa3c3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavHeaderReader.java @@ -0,0 +1,191 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.wav; + +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.WavUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** Reads a {@code WavHeader} from an input stream; supports resuming from input failures. */ +/* package */ final class WavHeaderReader { + + private static final String TAG = "WavHeaderReader"; + + /** + * Peeks and returns a {@code WavHeader}. + * + * @param input Input stream to peek the WAV header from. + * @throws ParserException If the input file is an incorrect RIFF WAV. + * @throws IOException If peeking from the input fails. + * @throws InterruptedException If interrupted while peeking from input. + * @return A new {@code WavHeader} peeked from {@code input}, or null if the input is not a + * supported WAV format. + */ + @Nullable + public static WavHeader peek(ExtractorInput input) throws IOException, InterruptedException { + Assertions.checkNotNull(input); + + // Allocate a scratch buffer large enough to store the format chunk. + ParsableByteArray scratch = new ParsableByteArray(16); + + // Attempt to read the RIFF chunk. + ChunkHeader chunkHeader = ChunkHeader.peek(input, scratch); + if (chunkHeader.id != WavUtil.RIFF_FOURCC) { + return null; + } + + input.peekFully(scratch.data, 0, 4); + scratch.setPosition(0); + int riffFormat = scratch.readInt(); + if (riffFormat != WavUtil.WAVE_FOURCC) { + Log.e(TAG, "Unsupported RIFF format: " + riffFormat); + return null; + } + + // Skip chunks until we find the format chunk. + chunkHeader = ChunkHeader.peek(input, scratch); + while (chunkHeader.id != WavUtil.FMT_FOURCC) { + input.advancePeekPosition((int) chunkHeader.size); + chunkHeader = ChunkHeader.peek(input, scratch); + } + + Assertions.checkState(chunkHeader.size >= 16); + input.peekFully(scratch.data, 0, 16); + scratch.setPosition(0); + int audioFormatType = scratch.readLittleEndianUnsignedShort(); + int numChannels = scratch.readLittleEndianUnsignedShort(); + int frameRateHz = scratch.readLittleEndianUnsignedIntToInt(); + int averageBytesPerSecond = scratch.readLittleEndianUnsignedIntToInt(); + int blockSize = scratch.readLittleEndianUnsignedShort(); + int bitsPerSample = scratch.readLittleEndianUnsignedShort(); + + int bytesLeft = (int) chunkHeader.size - 16; + byte[] extraData; + if (bytesLeft > 0) { + extraData = new byte[bytesLeft]; + input.peekFully(extraData, 0, bytesLeft); + } else { + extraData = Util.EMPTY_BYTE_ARRAY; + } + + return new WavHeader( + audioFormatType, + numChannels, + frameRateHz, + averageBytesPerSecond, + blockSize, + bitsPerSample, + extraData); + } + + /** + * Skips to the data in the given WAV input stream, and returns its bounds. After calling, the + * input stream's position will point to the start of sample data in the WAV. If an exception is + * thrown, the input position will be left pointing to a chunk header. + * + * @param input The input stream, whose read position must be pointing to a valid chunk header. + * @return The byte positions at which the data starts (inclusive) and ends (exclusive). + * @throws ParserException If an error occurs parsing chunks. + * @throws IOException If reading from the input fails. + * @throws InterruptedException If interrupted while reading from input. + */ + public static Pair skipToData(ExtractorInput input) + throws IOException, InterruptedException { + Assertions.checkNotNull(input); + + // Make sure the peek position is set to the read position before we peek the first header. + input.resetPeekPosition(); + + ParsableByteArray scratch = new ParsableByteArray(ChunkHeader.SIZE_IN_BYTES); + // Skip all chunks until we hit the data header. + ChunkHeader chunkHeader = ChunkHeader.peek(input, scratch); + while (chunkHeader.id != WavUtil.DATA_FOURCC) { + if (chunkHeader.id != WavUtil.RIFF_FOURCC && chunkHeader.id != WavUtil.FMT_FOURCC) { + Log.w(TAG, "Ignoring unknown WAV chunk: " + chunkHeader.id); + } + long bytesToSkip = ChunkHeader.SIZE_IN_BYTES + chunkHeader.size; + // Override size of RIFF chunk, since it describes its size as the entire file. + if (chunkHeader.id == WavUtil.RIFF_FOURCC) { + bytesToSkip = ChunkHeader.SIZE_IN_BYTES + 4; + } + if (bytesToSkip > Integer.MAX_VALUE) { + throw new ParserException("Chunk is too large (~2GB+) to skip; id: " + chunkHeader.id); + } + input.skipFully((int) bytesToSkip); + chunkHeader = ChunkHeader.peek(input, scratch); + } + // Skip past the "data" header. + input.skipFully(ChunkHeader.SIZE_IN_BYTES); + + long dataStartPosition = input.getPosition(); + long dataEndPosition = dataStartPosition + chunkHeader.size; + long inputLength = input.getLength(); + if (inputLength != C.LENGTH_UNSET && dataEndPosition > inputLength) { + Log.w(TAG, "Data exceeds input length: " + dataEndPosition + ", " + inputLength); + dataEndPosition = inputLength; + } + return Pair.create(dataStartPosition, dataEndPosition); + } + + private WavHeaderReader() { + // Prevent instantiation. + } + + /** Container for a WAV chunk header. */ + private static final class ChunkHeader { + + /** Size in bytes of a WAV chunk header. */ + public static final int SIZE_IN_BYTES = 8; + + /** 4-character identifier, stored as an integer, for this chunk. */ + public final int id; + /** Size of this chunk in bytes. */ + public final long size; + + private ChunkHeader(int id, long size) { + this.id = id; + this.size = size; + } + + /** + * Peeks and returns a {@link ChunkHeader}. + * + * @param input Input stream to peek the chunk header from. + * @param scratch Buffer for temporary use. + * @throws IOException If peeking from the input fails. + * @throws InterruptedException If interrupted while peeking from input. + * @return A new {@code ChunkHeader} peeked from {@code input}. + */ + public static ChunkHeader peek(ExtractorInput input, ParsableByteArray scratch) + throws IOException, InterruptedException { + input.peekFully(scratch.data, /* offset= */ 0, /* length= */ SIZE_IN_BYTES); + scratch.setPosition(0); + + int id = scratch.readInt(); + long size = scratch.readLittleEndianUnsignedInt(); + + return new ChunkHeader(id, size); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavSeekMap.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavSeekMap.java new file mode 100644 index 0000000000..d14268d120 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/extractor/wav/WavSeekMap.java @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.wav; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekPoint; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/* package */ final class WavSeekMap implements SeekMap { + + private final WavHeader wavHeader; + private final int framesPerBlock; + private final long firstBlockPosition; + private final long blockCount; + private final long durationUs; + + public WavSeekMap( + WavHeader wavHeader, int framesPerBlock, long dataStartPosition, long dataEndPosition) { + this.wavHeader = wavHeader; + this.framesPerBlock = framesPerBlock; + this.firstBlockPosition = dataStartPosition; + this.blockCount = (dataEndPosition - dataStartPosition) / wavHeader.blockSize; + durationUs = blockIndexToTimeUs(blockCount); + } + + @Override + public boolean isSeekable() { + return true; + } + + @Override + public long getDurationUs() { + return durationUs; + } + + @Override + public SeekPoints getSeekPoints(long timeUs) { + // Calculate the containing block index, constraining to valid indices. + long blockIndex = (timeUs * wavHeader.frameRateHz) / (C.MICROS_PER_SECOND * framesPerBlock); + blockIndex = Util.constrainValue(blockIndex, 0, blockCount - 1); + + long seekPosition = firstBlockPosition + (blockIndex * wavHeader.blockSize); + long seekTimeUs = blockIndexToTimeUs(blockIndex); + SeekPoint seekPoint = new SeekPoint(seekTimeUs, seekPosition); + if (seekTimeUs >= timeUs || blockIndex == blockCount - 1) { + return new SeekPoints(seekPoint); + } else { + long secondBlockIndex = blockIndex + 1; + long secondSeekPosition = firstBlockPosition + (secondBlockIndex * wavHeader.blockSize); + long secondSeekTimeUs = blockIndexToTimeUs(secondBlockIndex); + SeekPoint secondSeekPoint = new SeekPoint(secondSeekTimeUs, secondSeekPosition); + return new SeekPoints(seekPoint, secondSeekPoint); + } + } + + private long blockIndexToTimeUs(long blockIndex) { + return Util.scaleLargeTimestamp( + blockIndex * framesPerBlock, C.MICROS_PER_SECOND, wavHeader.frameRateHz); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecInfo.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecInfo.java new file mode 100644 index 0000000000..7e38c9a173 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecInfo.java @@ -0,0 +1,617 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec; + +import android.annotation.TargetApi; +import android.graphics.Point; +import android.media.MediaCodec; +import android.media.MediaCodecInfo.AudioCapabilities; +import android.media.MediaCodecInfo.CodecCapabilities; +import android.media.MediaCodecInfo.CodecProfileLevel; +import android.media.MediaCodecInfo.VideoCapabilities; +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** Information about a {@link MediaCodec} for a given mime type. */ +@SuppressWarnings("InlinedApi") +public final class MediaCodecInfo { + + public static final String TAG = "MediaCodecInfo"; + + /** + * The value returned by {@link #getMaxSupportedInstances()} if the upper bound on the maximum + * number of supported instances is unknown. + */ + public static final int MAX_SUPPORTED_INSTANCES_UNKNOWN = -1; + + /** + * The name of the decoder. + *

+ * May be passed to {@link MediaCodec#createByCodecName(String)} to create an instance of the + * decoder. + */ + public final String name; + + /** The MIME type handled by the codec, or {@code null} if this is a passthrough codec. */ + @Nullable public final String mimeType; + + /** + * The MIME type that the codec uses for media of type {@link #mimeType}, or {@code null} if this + * is a passthrough codec. Equal to {@link #mimeType} unless the codec is known to use a + * non-standard MIME type alias. + */ + @Nullable public final String codecMimeType; + + /** + * The capabilities of the decoder, like the profiles/levels it supports, or {@code null} if not + * known. + */ + @Nullable public final CodecCapabilities capabilities; + + /** + * Whether the decoder supports seamless resolution switches. + * + * @see CodecCapabilities#isFeatureSupported(String) + * @see CodecCapabilities#FEATURE_AdaptivePlayback + */ + public final boolean adaptive; + + /** + * Whether the decoder supports tunneling. + * + * @see CodecCapabilities#isFeatureSupported(String) + * @see CodecCapabilities#FEATURE_TunneledPlayback + */ + public final boolean tunneling; + + /** + * Whether the decoder is secure. + * + * @see CodecCapabilities#isFeatureSupported(String) + * @see CodecCapabilities#FEATURE_SecurePlayback + */ + public final boolean secure; + + /** Whether this instance describes a passthrough codec. */ + public final boolean passthrough; + + /** + * Whether the codec is hardware accelerated. + * + *

This could be an approximation as the exact information is only provided in API levels 29+. + * + * @see android.media.MediaCodecInfo#isHardwareAccelerated() + */ + public final boolean hardwareAccelerated; + + /** + * Whether the codec is software only. + * + *

This could be an approximation as the exact information is only provided in API levels 29+. + * + * @see android.media.MediaCodecInfo#isSoftwareOnly() + */ + public final boolean softwareOnly; + + /** + * Whether the codec is from the vendor. + * + *

This could be an approximation as the exact information is only provided in API levels 29+. + * + * @see android.media.MediaCodecInfo#isVendor() + */ + public final boolean vendor; + + private final boolean isVideo; + + /** + * Creates an instance representing an audio passthrough decoder. + * + * @param name The name of the {@link MediaCodec}. + * @return The created instance. + */ + public static MediaCodecInfo newPassthroughInstance(String name) { + return new MediaCodecInfo( + name, + /* mimeType= */ null, + /* codecMimeType= */ null, + /* capabilities= */ null, + /* passthrough= */ true, + /* hardwareAccelerated= */ false, + /* softwareOnly= */ true, + /* vendor= */ false, + /* forceDisableAdaptive= */ false, + /* forceSecure= */ false); + } + + /** + * Creates an instance. + * + * @param name The name of the {@link MediaCodec}. + * @param mimeType A mime type supported by the {@link MediaCodec}. + * @param codecMimeType The MIME type that the codec uses for media of type {@code #mimeType}. + * Equal to {@code mimeType} unless the codec is known to use a non-standard MIME type alias. + * @param capabilities The capabilities of the {@link MediaCodec} for the specified mime type, or + * {@code null} if not known. + * @param hardwareAccelerated Whether the {@link MediaCodec} is hardware accelerated. + * @param softwareOnly Whether the {@link MediaCodec} is software only. + * @param vendor Whether the {@link MediaCodec} is provided by the vendor. + * @param forceDisableAdaptive Whether {@link #adaptive} should be forced to {@code false}. + * @param forceSecure Whether {@link #secure} should be forced to {@code true}. + * @return The created instance. + */ + public static MediaCodecInfo newInstance( + String name, + String mimeType, + String codecMimeType, + @Nullable CodecCapabilities capabilities, + boolean hardwareAccelerated, + boolean softwareOnly, + boolean vendor, + boolean forceDisableAdaptive, + boolean forceSecure) { + return new MediaCodecInfo( + name, + mimeType, + codecMimeType, + capabilities, + /* passthrough= */ false, + hardwareAccelerated, + softwareOnly, + vendor, + forceDisableAdaptive, + forceSecure); + } + + private MediaCodecInfo( + String name, + @Nullable String mimeType, + @Nullable String codecMimeType, + @Nullable CodecCapabilities capabilities, + boolean passthrough, + boolean hardwareAccelerated, + boolean softwareOnly, + boolean vendor, + boolean forceDisableAdaptive, + boolean forceSecure) { + this.name = Assertions.checkNotNull(name); + this.mimeType = mimeType; + this.codecMimeType = codecMimeType; + this.capabilities = capabilities; + this.passthrough = passthrough; + this.hardwareAccelerated = hardwareAccelerated; + this.softwareOnly = softwareOnly; + this.vendor = vendor; + adaptive = !forceDisableAdaptive && capabilities != null && isAdaptive(capabilities); + tunneling = capabilities != null && isTunneling(capabilities); + secure = forceSecure || (capabilities != null && isSecure(capabilities)); + isVideo = MimeTypes.isVideo(mimeType); + } + + @Override + public String toString() { + return name; + } + + /** + * The profile levels supported by the decoder. + * + * @return The profile levels supported by the decoder. + */ + public CodecProfileLevel[] getProfileLevels() { + return capabilities == null || capabilities.profileLevels == null ? new CodecProfileLevel[0] + : capabilities.profileLevels; + } + + /** + * Returns an upper bound on the maximum number of supported instances, or {@link + * #MAX_SUPPORTED_INSTANCES_UNKNOWN} if unknown. Applications should not expect to operate more + * instances than the returned maximum. + * + * @see CodecCapabilities#getMaxSupportedInstances() + */ + public int getMaxSupportedInstances() { + return (Util.SDK_INT < 23 || capabilities == null) + ? MAX_SUPPORTED_INSTANCES_UNKNOWN + : getMaxSupportedInstancesV23(capabilities); + } + + /** + * Returns whether the decoder may support decoding the given {@code format}. + * + * @param format The input media format. + * @return Whether the decoder may support decoding the given {@code format}. + * @throws MediaCodecUtil.DecoderQueryException Thrown if an error occurs while querying decoders. + */ + public boolean isFormatSupported(Format format) throws MediaCodecUtil.DecoderQueryException { + if (!isCodecSupported(format)) { + return false; + } + + if (isVideo) { + if (format.width <= 0 || format.height <= 0) { + return true; + } + if (Util.SDK_INT >= 21) { + return isVideoSizeAndRateSupportedV21(format.width, format.height, format.frameRate); + } else { + boolean isFormatSupported = + format.width * format.height <= MediaCodecUtil.maxH264DecodableFrameSize(); + if (!isFormatSupported) { + logNoSupport("legacyFrameSize, " + format.width + "x" + format.height); + } + return isFormatSupported; + } + } else { // Audio + return Util.SDK_INT < 21 + || ((format.sampleRate == Format.NO_VALUE + || isAudioSampleRateSupportedV21(format.sampleRate)) + && (format.channelCount == Format.NO_VALUE + || isAudioChannelCountSupportedV21(format.channelCount))); + } + } + + /** + * Whether the decoder supports the codec of the given {@code format}. If there is insufficient + * information to decide, returns true. + * + * @param format The input media format. + * @return True if the codec of the given {@code format} is supported by the decoder. + */ + public boolean isCodecSupported(Format format) { + if (format.codecs == null || mimeType == null) { + return true; + } + String codecMimeType = MimeTypes.getMediaMimeType(format.codecs); + if (codecMimeType == null) { + return true; + } + if (!mimeType.equals(codecMimeType)) { + logNoSupport("codec.mime " + format.codecs + ", " + codecMimeType); + return false; + } + Pair codecProfileAndLevel = MediaCodecUtil.getCodecProfileAndLevel(format); + if (codecProfileAndLevel == null) { + // If we don't know any better, we assume that the profile and level are supported. + return true; + } + int profile = codecProfileAndLevel.first; + int level = codecProfileAndLevel.second; + if (!isVideo && profile != CodecProfileLevel.AACObjectXHE) { + // Some devices/builds underreport audio capabilities, so assume support except for xHE-AAC + // which may not be widely supported. See https://github.com/google/ExoPlayer/issues/5145. + return true; + } + for (CodecProfileLevel capabilities : getProfileLevels()) { + if (capabilities.profile == profile && capabilities.level >= level) { + return true; + } + } + logNoSupport("codec.profileLevel, " + format.codecs + ", " + codecMimeType); + return false; + } + + /** Whether the codec handles HDR10+ out-of-band metadata. */ + public boolean isHdr10PlusOutOfBandMetadataSupported() { + if (Util.SDK_INT >= 29 && MimeTypes.VIDEO_VP9.equals(mimeType)) { + for (CodecProfileLevel capabilities : getProfileLevels()) { + if (capabilities.profile == CodecProfileLevel.VP9Profile2HDR10Plus) { + return true; + } + } + } + return false; + } + + /** + * Returns whether it may be possible to adapt to playing a different format when the codec is + * configured to play media in the specified {@code format}. For adaptation to succeed, the codec + * must also be configured with appropriate maximum values and {@link + * #isSeamlessAdaptationSupported(Format, Format, boolean)} must return {@code true} for the + * old/new formats. + * + * @param format The format of media for which the decoder will be configured. + * @return Whether adaptation may be possible + */ + public boolean isSeamlessAdaptationSupported(Format format) { + if (isVideo) { + return adaptive; + } else { + Pair codecProfileLevel = MediaCodecUtil.getCodecProfileAndLevel(format); + return codecProfileLevel != null && codecProfileLevel.first == CodecProfileLevel.AACObjectXHE; + } + } + + /** + * Returns whether it is possible to adapt the decoder seamlessly from {@code oldFormat} to {@code + * newFormat}. If {@code newFormat} may not be completely populated, pass {@code false} for {@code + * isNewFormatComplete}. + * + * @param oldFormat The format being decoded. + * @param newFormat The new format. + * @param isNewFormatComplete Whether {@code newFormat} is populated with format-specific + * metadata. + * @return Whether it is possible to adapt the decoder seamlessly. + */ + public boolean isSeamlessAdaptationSupported( + Format oldFormat, Format newFormat, boolean isNewFormatComplete) { + if (isVideo) { + return oldFormat.sampleMimeType.equals(newFormat.sampleMimeType) + && oldFormat.rotationDegrees == newFormat.rotationDegrees + && (adaptive + || (oldFormat.width == newFormat.width && oldFormat.height == newFormat.height)) + && ((!isNewFormatComplete && newFormat.colorInfo == null) + || Util.areEqual(oldFormat.colorInfo, newFormat.colorInfo)); + } else { + if (!MimeTypes.AUDIO_AAC.equals(mimeType) + || !oldFormat.sampleMimeType.equals(newFormat.sampleMimeType) + || oldFormat.channelCount != newFormat.channelCount + || oldFormat.sampleRate != newFormat.sampleRate) { + return false; + } + // Check the codec profile levels support adaptation. + Pair oldCodecProfileLevel = + MediaCodecUtil.getCodecProfileAndLevel(oldFormat); + Pair newCodecProfileLevel = + MediaCodecUtil.getCodecProfileAndLevel(newFormat); + if (oldCodecProfileLevel == null || newCodecProfileLevel == null) { + return false; + } + int oldProfile = oldCodecProfileLevel.first; + int newProfile = newCodecProfileLevel.first; + return oldProfile == CodecProfileLevel.AACObjectXHE + && newProfile == CodecProfileLevel.AACObjectXHE; + } + } + + /** + * Whether the decoder supports video with a given width, height and frame rate. + * + *

Must not be called if the device SDK version is less than 21. + * + * @param width Width in pixels. + * @param height Height in pixels. + * @param frameRate Optional frame rate in frames per second. Ignored if set to {@link + * Format#NO_VALUE} or any value less than or equal to 0. + * @return Whether the decoder supports video with the given width, height and frame rate. + */ + @TargetApi(21) + public boolean isVideoSizeAndRateSupportedV21(int width, int height, double frameRate) { + if (capabilities == null) { + logNoSupport("sizeAndRate.caps"); + return false; + } + VideoCapabilities videoCapabilities = capabilities.getVideoCapabilities(); + if (videoCapabilities == null) { + logNoSupport("sizeAndRate.vCaps"); + return false; + } + if (!areSizeAndRateSupportedV21(videoCapabilities, width, height, frameRate)) { + if (width >= height + || !enableRotatedVerticalResolutionWorkaround(name) + || !areSizeAndRateSupportedV21(videoCapabilities, height, width, frameRate)) { + logNoSupport("sizeAndRate.support, " + width + "x" + height + "x" + frameRate); + return false; + } + logAssumedSupport("sizeAndRate.rotated, " + width + "x" + height + "x" + frameRate); + } + return true; + } + + /** + * Returns the smallest video size greater than or equal to a specified size that also satisfies + * the {@link MediaCodec}'s width and height alignment requirements. + *

+ * Must not be called if the device SDK version is less than 21. + * + * @param width Width in pixels. + * @param height Height in pixels. + * @return The smallest video size greater than or equal to the specified size that also satisfies + * the {@link MediaCodec}'s width and height alignment requirements, or null if not a video + * codec. + */ + @TargetApi(21) + public Point alignVideoSizeV21(int width, int height) { + if (capabilities == null) { + return null; + } + VideoCapabilities videoCapabilities = capabilities.getVideoCapabilities(); + if (videoCapabilities == null) { + return null; + } + return alignVideoSizeV21(videoCapabilities, width, height); + } + + /** + * Whether the decoder supports audio with a given sample rate. + *

+ * Must not be called if the device SDK version is less than 21. + * + * @param sampleRate The sample rate in Hz. + * @return Whether the decoder supports audio with the given sample rate. + */ + @TargetApi(21) + public boolean isAudioSampleRateSupportedV21(int sampleRate) { + if (capabilities == null) { + logNoSupport("sampleRate.caps"); + return false; + } + AudioCapabilities audioCapabilities = capabilities.getAudioCapabilities(); + if (audioCapabilities == null) { + logNoSupport("sampleRate.aCaps"); + return false; + } + if (!audioCapabilities.isSampleRateSupported(sampleRate)) { + logNoSupport("sampleRate.support, " + sampleRate); + return false; + } + return true; + } + + /** + * Whether the decoder supports audio with a given channel count. + *

+ * Must not be called if the device SDK version is less than 21. + * + * @param channelCount The channel count. + * @return Whether the decoder supports audio with the given channel count. + */ + @TargetApi(21) + public boolean isAudioChannelCountSupportedV21(int channelCount) { + if (capabilities == null) { + logNoSupport("channelCount.caps"); + return false; + } + AudioCapabilities audioCapabilities = capabilities.getAudioCapabilities(); + if (audioCapabilities == null) { + logNoSupport("channelCount.aCaps"); + return false; + } + int maxInputChannelCount = adjustMaxInputChannelCount(name, mimeType, + audioCapabilities.getMaxInputChannelCount()); + if (maxInputChannelCount < channelCount) { + logNoSupport("channelCount.support, " + channelCount); + return false; + } + return true; + } + + private void logNoSupport(String message) { + Log.d(TAG, "NoSupport [" + message + "] [" + name + ", " + mimeType + "] [" + + Util.DEVICE_DEBUG_INFO + "]"); + } + + private void logAssumedSupport(String message) { + Log.d(TAG, "AssumedSupport [" + message + "] [" + name + ", " + mimeType + "] [" + + Util.DEVICE_DEBUG_INFO + "]"); + } + + private static int adjustMaxInputChannelCount(String name, String mimeType, int maxChannelCount) { + if (maxChannelCount > 1 || (Util.SDK_INT >= 26 && maxChannelCount > 0)) { + // The maximum channel count looks like it's been set correctly. + return maxChannelCount; + } + if (MimeTypes.AUDIO_MPEG.equals(mimeType) + || MimeTypes.AUDIO_AMR_NB.equals(mimeType) + || MimeTypes.AUDIO_AMR_WB.equals(mimeType) + || MimeTypes.AUDIO_AAC.equals(mimeType) + || MimeTypes.AUDIO_VORBIS.equals(mimeType) + || MimeTypes.AUDIO_OPUS.equals(mimeType) + || MimeTypes.AUDIO_RAW.equals(mimeType) + || MimeTypes.AUDIO_FLAC.equals(mimeType) + || MimeTypes.AUDIO_ALAW.equals(mimeType) + || MimeTypes.AUDIO_MLAW.equals(mimeType) + || MimeTypes.AUDIO_MSGSM.equals(mimeType)) { + // Platform code should have set a default. + return maxChannelCount; + } + // The maximum channel count looks incorrect. Adjust it to an assumed default. + int assumedMaxChannelCount; + if (MimeTypes.AUDIO_AC3.equals(mimeType)) { + assumedMaxChannelCount = 6; + } else if (MimeTypes.AUDIO_E_AC3.equals(mimeType)) { + assumedMaxChannelCount = 16; + } else { + // Default to the platform limit, which is 30. + assumedMaxChannelCount = 30; + } + Log.w(TAG, "AssumedMaxChannelAdjustment: " + name + ", [" + maxChannelCount + " to " + + assumedMaxChannelCount + "]"); + return assumedMaxChannelCount; + } + + private static boolean isAdaptive(CodecCapabilities capabilities) { + return Util.SDK_INT >= 19 && isAdaptiveV19(capabilities); + } + + @TargetApi(19) + private static boolean isAdaptiveV19(CodecCapabilities capabilities) { + return capabilities.isFeatureSupported(CodecCapabilities.FEATURE_AdaptivePlayback); + } + + private static boolean isTunneling(CodecCapabilities capabilities) { + return Util.SDK_INT >= 21 && isTunnelingV21(capabilities); + } + + @TargetApi(21) + private static boolean isTunnelingV21(CodecCapabilities capabilities) { + return capabilities.isFeatureSupported(CodecCapabilities.FEATURE_TunneledPlayback); + } + + private static boolean isSecure(CodecCapabilities capabilities) { + return Util.SDK_INT >= 21 && isSecureV21(capabilities); + } + + @TargetApi(21) + private static boolean isSecureV21(CodecCapabilities capabilities) { + return capabilities.isFeatureSupported(CodecCapabilities.FEATURE_SecurePlayback); + } + + @TargetApi(21) + private static boolean areSizeAndRateSupportedV21(VideoCapabilities capabilities, int width, + int height, double frameRate) { + // Don't ever fail due to alignment. See: https://github.com/google/ExoPlayer/issues/6551. + Point alignedSize = alignVideoSizeV21(capabilities, width, height); + width = alignedSize.x; + height = alignedSize.y; + + if (frameRate == Format.NO_VALUE || frameRate <= 0) { + return capabilities.isSizeSupported(width, height); + } else { + // The signaled frame rate may be slightly higher than the actual frame rate, so we take the + // floor to avoid situations where a range check in areSizeAndRateSupported fails due to + // slightly exceeding the limits for a standard format (e.g., 1080p at 30 fps). + double floorFrameRate = Math.floor(frameRate); + return capabilities.areSizeAndRateSupported(width, height, floorFrameRate); + } + } + + @TargetApi(21) + private static Point alignVideoSizeV21(VideoCapabilities capabilities, int width, int height) { + int widthAlignment = capabilities.getWidthAlignment(); + int heightAlignment = capabilities.getHeightAlignment(); + return new Point( + Util.ceilDivide(width, widthAlignment) * widthAlignment, + Util.ceilDivide(height, heightAlignment) * heightAlignment); + } + + @TargetApi(23) + private static int getMaxSupportedInstancesV23(CodecCapabilities capabilities) { + return capabilities.getMaxSupportedInstances(); + } + + /** + * Capabilities are known to be inaccurately reported for vertical resolutions on some devices. + * [Internal ref: b/31387661]. When this workaround is enabled, we also check whether the + * capabilities indicate support if the width and height are swapped. If they do, we assume that + * the vertical resolution is also supported. + * + * @param name The name of the codec. + * @return Whether to enable the workaround. + */ + private static final boolean enableRotatedVerticalResolutionWorkaround(String name) { + if ("OMX.MTK.VIDEO.DECODER.HEVC".equals(name) && "mcv5a".equals(Util.DEVICE)) { + // See https://github.com/google/ExoPlayer/issues/6612. + return false; + } + return true; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java new file mode 100644 index 0000000000..8d2f4574fd --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java @@ -0,0 +1,2014 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec; + +import android.annotation.TargetApi; +import android.media.MediaCodec; +import android.media.MediaCodec.CodecException; +import android.media.MediaCodec.CryptoException; +import android.media.MediaCrypto; +import android.media.MediaCryptoException; +import android.media.MediaFormat; +import android.os.Bundle; +import android.os.SystemClock; +import androidx.annotation.CheckResult; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.BaseRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderCounters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession.DrmSessionException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.FrameworkMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecUtil.DecoderQueryException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimedValueQueue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TraceUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.nio.ByteBuffer; +import java.util.ArrayDeque; +import java.util.ArrayList; +import java.util.List; + +/** + * An abstract renderer that uses {@link MediaCodec} to decode samples for rendering. + */ +public abstract class MediaCodecRenderer extends BaseRenderer { + + /** Thrown when a failure occurs instantiating a decoder. */ + public static class DecoderInitializationException extends Exception { + + private static final int CUSTOM_ERROR_CODE_BASE = -50000; + private static final int NO_SUITABLE_DECODER_ERROR = CUSTOM_ERROR_CODE_BASE + 1; + private static final int DECODER_QUERY_ERROR = CUSTOM_ERROR_CODE_BASE + 2; + + /** + * The mime type for which a decoder was being initialized. + */ + public final String mimeType; + + /** + * Whether it was required that the decoder support a secure output path. + */ + public final boolean secureDecoderRequired; + + /** + * The {@link MediaCodecInfo} of the decoder that failed to initialize. Null if no suitable + * decoder was found. + */ + @Nullable public final MediaCodecInfo codecInfo; + + /** An optional developer-readable diagnostic information string. May be null. */ + @Nullable public final String diagnosticInfo; + + /** + * If the decoder failed to initialize and another decoder being used as a fallback also failed + * to initialize, the {@link DecoderInitializationException} for the fallback decoder. Null if + * there was no fallback decoder or no suitable decoders were found. + */ + @Nullable public final DecoderInitializationException fallbackDecoderInitializationException; + + public DecoderInitializationException(Format format, Throwable cause, + boolean secureDecoderRequired, int errorCode) { + this( + "Decoder init failed: [" + errorCode + "], " + format, + cause, + format.sampleMimeType, + secureDecoderRequired, + /* mediaCodecInfo= */ null, + buildCustomDiagnosticInfo(errorCode), + /* fallbackDecoderInitializationException= */ null); + } + + public DecoderInitializationException( + Format format, + Throwable cause, + boolean secureDecoderRequired, + MediaCodecInfo mediaCodecInfo) { + this( + "Decoder init failed: " + mediaCodecInfo.name + ", " + format, + cause, + format.sampleMimeType, + secureDecoderRequired, + mediaCodecInfo, + Util.SDK_INT >= 21 ? getDiagnosticInfoV21(cause) : null, + /* fallbackDecoderInitializationException= */ null); + } + + private DecoderInitializationException( + String message, + Throwable cause, + String mimeType, + boolean secureDecoderRequired, + @Nullable MediaCodecInfo mediaCodecInfo, + @Nullable String diagnosticInfo, + @Nullable DecoderInitializationException fallbackDecoderInitializationException) { + super(message, cause); + this.mimeType = mimeType; + this.secureDecoderRequired = secureDecoderRequired; + this.codecInfo = mediaCodecInfo; + this.diagnosticInfo = diagnosticInfo; + this.fallbackDecoderInitializationException = fallbackDecoderInitializationException; + } + + @CheckResult + private DecoderInitializationException copyWithFallbackException( + DecoderInitializationException fallbackException) { + return new DecoderInitializationException( + getMessage(), + getCause(), + mimeType, + secureDecoderRequired, + codecInfo, + diagnosticInfo, + fallbackException); + } + + @TargetApi(21) + private static String getDiagnosticInfoV21(Throwable cause) { + if (cause instanceof CodecException) { + return ((CodecException) cause).getDiagnosticInfo(); + } + return null; + } + + private static String buildCustomDiagnosticInfo(int errorCode) { + String sign = errorCode < 0 ? "neg_" : ""; + return "com.google.android.exoplayer2.mediacodec.MediaCodecRenderer_" + + sign + + Math.abs(errorCode); + } + } + + /** Thrown when a failure occurs in the decoder. */ + public static class DecoderException extends Exception { + + /** The {@link MediaCodecInfo} of the decoder that failed. Null if unknown. */ + @Nullable public final MediaCodecInfo codecInfo; + + /** An optional developer-readable diagnostic information string. May be null. */ + @Nullable public final String diagnosticInfo; + + public DecoderException(Throwable cause, @Nullable MediaCodecInfo codecInfo) { + super("Decoder failed: " + (codecInfo == null ? null : codecInfo.name), cause); + this.codecInfo = codecInfo; + diagnosticInfo = Util.SDK_INT >= 21 ? getDiagnosticInfoV21(cause) : null; + } + + @TargetApi(21) + private static String getDiagnosticInfoV21(Throwable cause) { + if (cause instanceof CodecException) { + return ((CodecException) cause).getDiagnosticInfo(); + } + return null; + } + } + + /** Indicates no codec operating rate should be set. */ + protected static final float CODEC_OPERATING_RATE_UNSET = -1; + + private static final String TAG = "MediaCodecRenderer"; + + /** + * If the {@link MediaCodec} is hotswapped (i.e. replaced during playback), this is the period of + * time during which {@link #isReady()} will report true regardless of whether the new codec has + * output frames that are ready to be rendered. + *

+ * This allows codec hotswapping to be performed seamlessly, without interrupting the playback of + * other renderers, provided the new codec is able to decode some frames within this time period. + */ + private static final long MAX_CODEC_HOTSWAP_TIME_MS = 1000; + + /** + * The possible return values for {@link #canKeepCodec(MediaCodec, MediaCodecInfo, Format, + * Format)}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + KEEP_CODEC_RESULT_NO, + KEEP_CODEC_RESULT_YES_WITH_FLUSH, + KEEP_CODEC_RESULT_YES_WITH_RECONFIGURATION, + KEEP_CODEC_RESULT_YES_WITHOUT_RECONFIGURATION + }) + protected @interface KeepCodecResult {} + /** The codec cannot be kept. */ + protected static final int KEEP_CODEC_RESULT_NO = 0; + /** The codec can be kept, but must be flushed. */ + protected static final int KEEP_CODEC_RESULT_YES_WITH_FLUSH = 1; + /** + * The codec can be kept. It does not need to be flushed, but must be reconfigured by prefixing + * the next input buffer with the new format's configuration data. + */ + protected static final int KEEP_CODEC_RESULT_YES_WITH_RECONFIGURATION = 2; + /** The codec can be kept. It does not need to be flushed and no reconfiguration is required. */ + protected static final int KEEP_CODEC_RESULT_YES_WITHOUT_RECONFIGURATION = 3; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + RECONFIGURATION_STATE_NONE, + RECONFIGURATION_STATE_WRITE_PENDING, + RECONFIGURATION_STATE_QUEUE_PENDING + }) + private @interface ReconfigurationState {} + /** + * There is no pending adaptive reconfiguration work. + */ + private static final int RECONFIGURATION_STATE_NONE = 0; + /** + * Codec configuration data needs to be written into the next buffer. + */ + private static final int RECONFIGURATION_STATE_WRITE_PENDING = 1; + /** + * Codec configuration data has been written into the next buffer, but that buffer still needs to + * be returned to the codec. + */ + private static final int RECONFIGURATION_STATE_QUEUE_PENDING = 2; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({DRAIN_STATE_NONE, DRAIN_STATE_SIGNAL_END_OF_STREAM, DRAIN_STATE_WAIT_END_OF_STREAM}) + private @interface DrainState {} + /** The codec is not being drained. */ + private static final int DRAIN_STATE_NONE = 0; + /** The codec needs to be drained, but we haven't signaled an end of stream to it yet. */ + private static final int DRAIN_STATE_SIGNAL_END_OF_STREAM = 1; + /** The codec needs to be drained, and we're waiting for it to output an end of stream. */ + private static final int DRAIN_STATE_WAIT_END_OF_STREAM = 2; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + DRAIN_ACTION_NONE, + DRAIN_ACTION_FLUSH, + DRAIN_ACTION_UPDATE_DRM_SESSION, + DRAIN_ACTION_REINITIALIZE + }) + private @interface DrainAction {} + /** No special action should be taken. */ + private static final int DRAIN_ACTION_NONE = 0; + /** The codec should be flushed. */ + private static final int DRAIN_ACTION_FLUSH = 1; + /** The codec should be flushed and updated to use the pending DRM session. */ + private static final int DRAIN_ACTION_UPDATE_DRM_SESSION = 2; + /** The codec should be reinitialized. */ + private static final int DRAIN_ACTION_REINITIALIZE = 3; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + ADAPTATION_WORKAROUND_MODE_NEVER, + ADAPTATION_WORKAROUND_MODE_SAME_RESOLUTION, + ADAPTATION_WORKAROUND_MODE_ALWAYS + }) + private @interface AdaptationWorkaroundMode {} + /** + * The adaptation workaround is never used. + */ + private static final int ADAPTATION_WORKAROUND_MODE_NEVER = 0; + /** + * The adaptation workaround is used when adapting between formats of the same resolution only. + */ + private static final int ADAPTATION_WORKAROUND_MODE_SAME_RESOLUTION = 1; + /** + * The adaptation workaround is always used when adapting between formats. + */ + private static final int ADAPTATION_WORKAROUND_MODE_ALWAYS = 2; + + /** + * H.264/AVC buffer to queue when using the adaptation workaround (see {@link + * #codecAdaptationWorkaroundMode(String)}. Consists of three NAL units with start codes: Baseline + * sequence/picture parameter sets and a 32 * 32 pixel IDR slice. This stream can be queued to + * force a resolution change when adapting to a new format. + */ + private static final byte[] ADAPTATION_WORKAROUND_BUFFER = + new byte[] { + 0, 0, 1, 103, 66, -64, 11, -38, 37, -112, 0, 0, 1, 104, -50, 15, 19, 32, 0, 0, 1, 101, -120, + -124, 13, -50, 113, 24, -96, 0, 47, -65, 28, 49, -61, 39, 93, 120 + }; + + private static final int ADAPTATION_WORKAROUND_SLICE_WIDTH_HEIGHT = 32; + + private final MediaCodecSelector mediaCodecSelector; + @Nullable private final DrmSessionManager drmSessionManager; + private final boolean playClearSamplesWithoutKeys; + private final boolean enableDecoderFallback; + private final float assumedMinimumCodecOperatingRate; + private final DecoderInputBuffer buffer; + private final DecoderInputBuffer flagsOnlyBuffer; + private final TimedValueQueue formatQueue; + private final ArrayList decodeOnlyPresentationTimestamps; + private final MediaCodec.BufferInfo outputBufferInfo; + + private boolean drmResourcesAcquired; + @Nullable private Format inputFormat; + private Format outputFormat; + @Nullable private DrmSession codecDrmSession; + @Nullable private DrmSession sourceDrmSession; + @Nullable private MediaCrypto mediaCrypto; + private boolean mediaCryptoRequiresSecureDecoder; + private long renderTimeLimitMs; + private float rendererOperatingRate; + @Nullable private MediaCodec codec; + @Nullable private Format codecFormat; + private float codecOperatingRate; + @Nullable private ArrayDeque availableCodecInfos; + @Nullable private DecoderInitializationException preferredDecoderInitializationException; + @Nullable private MediaCodecInfo codecInfo; + @AdaptationWorkaroundMode private int codecAdaptationWorkaroundMode; + private boolean codecNeedsReconfigureWorkaround; + private boolean codecNeedsDiscardToSpsWorkaround; + private boolean codecNeedsFlushWorkaround; + private boolean codecNeedsSosFlushWorkaround; + private boolean codecNeedsEosFlushWorkaround; + private boolean codecNeedsEosOutputExceptionWorkaround; + private boolean codecNeedsMonoChannelCountWorkaround; + private boolean codecNeedsAdaptationWorkaroundBuffer; + private boolean shouldSkipAdaptationWorkaroundOutputBuffer; + private boolean codecNeedsEosPropagation; + private ByteBuffer[] inputBuffers; + private ByteBuffer[] outputBuffers; + private long codecHotswapDeadlineMs; + private int inputIndex; + private int outputIndex; + private ByteBuffer outputBuffer; + private boolean isDecodeOnlyOutputBuffer; + private boolean isLastOutputBuffer; + private boolean codecReconfigured; + @ReconfigurationState private int codecReconfigurationState; + @DrainState private int codecDrainState; + @DrainAction private int codecDrainAction; + private boolean codecReceivedBuffers; + private boolean codecReceivedEos; + private boolean codecHasOutputMediaFormat; + private long largestQueuedPresentationTimeUs; + private long lastBufferInStreamPresentationTimeUs; + private boolean inputStreamEnded; + private boolean outputStreamEnded; + private boolean waitingForKeys; + private boolean waitingForFirstSyncSample; + private boolean waitingForFirstSampleInFormat; + private boolean skipMediaCodecStopOnRelease; + private boolean pendingOutputEndOfStream; + + protected DecoderCounters decoderCounters; + + /** + * @param trackType The track type that the renderer handles. One of the {@code C.TRACK_TYPE_*} + * constants defined in {@link C}. + * @param mediaCodecSelector A decoder selector. + * @param drmSessionManager For use with encrypted media. May be null if support for encrypted + * media is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + * @param enableDecoderFallback Whether to enable fallback to lower-priority decoders if decoder + * initialization fails. This may result in using a decoder that is less efficient or slower + * than the primary decoder. + * @param assumedMinimumCodecOperatingRate A codec operating rate that all codecs instantiated by + * this renderer are assumed to meet implicitly (i.e. without the operating rate being set + * explicitly using {@link MediaFormat#KEY_OPERATING_RATE}). + */ + public MediaCodecRenderer( + int trackType, + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + boolean enableDecoderFallback, + float assumedMinimumCodecOperatingRate) { + super(trackType); + this.mediaCodecSelector = Assertions.checkNotNull(mediaCodecSelector); + this.drmSessionManager = drmSessionManager; + this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys; + this.enableDecoderFallback = enableDecoderFallback; + this.assumedMinimumCodecOperatingRate = assumedMinimumCodecOperatingRate; + buffer = new DecoderInputBuffer(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_DISABLED); + flagsOnlyBuffer = DecoderInputBuffer.newFlagsOnlyInstance(); + formatQueue = new TimedValueQueue<>(); + decodeOnlyPresentationTimestamps = new ArrayList<>(); + outputBufferInfo = new MediaCodec.BufferInfo(); + codecReconfigurationState = RECONFIGURATION_STATE_NONE; + codecDrainState = DRAIN_STATE_NONE; + codecDrainAction = DRAIN_ACTION_NONE; + codecOperatingRate = CODEC_OPERATING_RATE_UNSET; + rendererOperatingRate = 1f; + renderTimeLimitMs = C.TIME_UNSET; + } + + /** + * Set a limit on the time a single {@link #render(long, long)} call can spend draining and + * filling the decoder. + * + *

This method is experimental, and will be renamed or removed in a future release. It should + * only be called before the renderer is used. + * + * @param renderTimeLimitMs The render time limit in milliseconds, or {@link C#TIME_UNSET} for no + * limit. + */ + public void experimental_setRenderTimeLimitMs(long renderTimeLimitMs) { + this.renderTimeLimitMs = renderTimeLimitMs; + } + + /** + * Skip calling {@link MediaCodec#stop()} when the underlying MediaCodec is going to be released. + * + *

By default, when the MediaCodecRenderer is releasing the underlying {@link MediaCodec}, it + * first calls {@link MediaCodec#stop()} and then calls {@link MediaCodec#release()}. If this + * feature is enabled, the MediaCodecRenderer will skip the call to {@link MediaCodec#stop()}. + * + *

This method is experimental, and will be renamed or removed in a future release. It should + * only be called before the renderer is used. + * + * @param enabled enable or disable the feature. + */ + public void experimental_setSkipMediaCodecStopOnRelease(boolean enabled) { + skipMediaCodecStopOnRelease = enabled; + } + + @Override + @AdaptiveSupport + public final int supportsMixedMimeTypeAdaptation() { + return ADAPTIVE_NOT_SEAMLESS; + } + + @Override + @Capabilities + public final int supportsFormat(Format format) throws ExoPlaybackException { + try { + return supportsFormat(mediaCodecSelector, drmSessionManager, format); + } catch (DecoderQueryException e) { + throw createRendererException(e, format); + } + } + + /** + * Returns the {@link Capabilities} for the given {@link Format}. + * + * @param mediaCodecSelector The decoder selector. + * @param drmSessionManager The renderer's {@link DrmSessionManager}. + * @param format The {@link Format}. + * @return The {@link Capabilities} for this {@link Format}. + * @throws DecoderQueryException If there was an error querying decoders. + */ + @Capabilities + protected abstract int supportsFormat( + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + Format format) + throws DecoderQueryException; + + /** + * Returns a list of decoders that can decode media in the specified format, in priority order. + * + * @param mediaCodecSelector The decoder selector. + * @param format The {@link Format} for which a decoder is required. + * @param requiresSecureDecoder Whether a secure decoder is required. + * @return A list of {@link MediaCodecInfo}s corresponding to decoders. May be empty. + * @throws DecoderQueryException Thrown if there was an error querying decoders. + */ + protected abstract List getDecoderInfos( + MediaCodecSelector mediaCodecSelector, Format format, boolean requiresSecureDecoder) + throws DecoderQueryException; + + /** + * Configures a newly created {@link MediaCodec}. + * + * @param codecInfo Information about the {@link MediaCodec} being configured. + * @param codec The {@link MediaCodec} to configure. + * @param format The {@link Format} for which the codec is being configured. + * @param crypto For drm protected playbacks, a {@link MediaCrypto} to use for decryption. + * @param codecOperatingRate The codec operating rate, or {@link #CODEC_OPERATING_RATE_UNSET} if + * no codec operating rate should be set. + */ + protected abstract void configureCodec( + MediaCodecInfo codecInfo, + MediaCodec codec, + Format format, + @Nullable MediaCrypto crypto, + float codecOperatingRate); + + protected final void maybeInitCodec() throws ExoPlaybackException { + if (codec != null || inputFormat == null) { + // We have a codec already, or we don't have a format with which to instantiate one. + return; + } + + setCodecDrmSession(sourceDrmSession); + + String mimeType = inputFormat.sampleMimeType; + if (codecDrmSession != null) { + if (mediaCrypto == null) { + FrameworkMediaCrypto sessionMediaCrypto = codecDrmSession.getMediaCrypto(); + if (sessionMediaCrypto == null) { + DrmSessionException drmError = codecDrmSession.getError(); + if (drmError != null) { + // Continue for now. We may be able to avoid failure if the session recovers, or if a + // new input format causes the session to be replaced before it's used. + } else { + // The drm session isn't open yet. + return; + } + } else { + try { + mediaCrypto = new MediaCrypto(sessionMediaCrypto.uuid, sessionMediaCrypto.sessionId); + } catch (MediaCryptoException e) { + throw createRendererException(e, inputFormat); + } + mediaCryptoRequiresSecureDecoder = + !sessionMediaCrypto.forceAllowInsecureDecoderComponents + && mediaCrypto.requiresSecureDecoderComponent(mimeType); + } + } + if (FrameworkMediaCrypto.WORKAROUND_DEVICE_NEEDS_KEYS_TO_CONFIGURE_CODEC) { + @DrmSession.State int drmSessionState = codecDrmSession.getState(); + if (drmSessionState == DrmSession.STATE_ERROR) { + throw createRendererException(codecDrmSession.getError(), inputFormat); + } else if (drmSessionState != DrmSession.STATE_OPENED_WITH_KEYS) { + // Wait for keys. + return; + } + } + } + + try { + maybeInitCodecWithFallback(mediaCrypto, mediaCryptoRequiresSecureDecoder); + } catch (DecoderInitializationException e) { + throw createRendererException(e, inputFormat); + } + } + + protected boolean shouldInitCodec(MediaCodecInfo codecInfo) { + return true; + } + + /** + * Returns whether the codec needs the renderer to propagate the end-of-stream signal directly, + * rather than by using an end-of-stream buffer queued to the codec. + */ + protected boolean getCodecNeedsEosPropagation() { + return false; + } + + /** + * Polls the pending output format queue for a given buffer timestamp. If a format is present, it + * is removed and returned. Otherwise returns {@code null}. Subclasses should only call this + * method if they are taking over responsibility for output format propagation (e.g., when using + * video tunneling). + */ + protected final @Nullable Format updateOutputFormatForTime(long presentationTimeUs) { + Format format = formatQueue.pollFloor(presentationTimeUs); + if (format != null) { + outputFormat = format; + } + return format; + } + + protected final MediaCodec getCodec() { + return codec; + } + + protected final @Nullable MediaCodecInfo getCodecInfo() { + return codecInfo; + } + + @Override + protected void onEnabled(boolean joining) throws ExoPlaybackException { + if (drmSessionManager != null && !drmResourcesAcquired) { + drmResourcesAcquired = true; + drmSessionManager.prepare(); + } + decoderCounters = new DecoderCounters(); + } + + @Override + protected void onPositionReset(long positionUs, boolean joining) throws ExoPlaybackException { + inputStreamEnded = false; + outputStreamEnded = false; + pendingOutputEndOfStream = false; + flushOrReinitializeCodec(); + formatQueue.clear(); + } + + @Override + public final void setOperatingRate(float operatingRate) throws ExoPlaybackException { + rendererOperatingRate = operatingRate; + if (codec != null + && codecDrainAction != DRAIN_ACTION_REINITIALIZE + && getState() != STATE_DISABLED) { + updateCodecOperatingRate(); + } + } + + @Override + protected void onDisabled() { + inputFormat = null; + if (sourceDrmSession != null || codecDrmSession != null) { + // TODO: Do something better with this case. + onReset(); + } else { + flushOrReleaseCodec(); + } + } + + @Override + protected void onReset() { + try { + releaseCodec(); + } finally { + setSourceDrmSession(null); + } + if (drmSessionManager != null && drmResourcesAcquired) { + drmResourcesAcquired = false; + drmSessionManager.release(); + } + } + + protected void releaseCodec() { + availableCodecInfos = null; + codecInfo = null; + codecFormat = null; + codecHasOutputMediaFormat = false; + resetInputBuffer(); + resetOutputBuffer(); + resetCodecBuffers(); + waitingForKeys = false; + codecHotswapDeadlineMs = C.TIME_UNSET; + decodeOnlyPresentationTimestamps.clear(); + largestQueuedPresentationTimeUs = C.TIME_UNSET; + lastBufferInStreamPresentationTimeUs = C.TIME_UNSET; + try { + if (codec != null) { + decoderCounters.decoderReleaseCount++; + try { + if (!skipMediaCodecStopOnRelease) { + codec.stop(); + } + } finally { + codec.release(); + } + } + } finally { + codec = null; + try { + if (mediaCrypto != null) { + mediaCrypto.release(); + } + } finally { + mediaCrypto = null; + mediaCryptoRequiresSecureDecoder = false; + setCodecDrmSession(null); + } + } + } + + @Override + protected void onStarted() { + // Do nothing. Overridden to remove throws clause. + } + + @Override + protected void onStopped() { + // Do nothing. Overridden to remove throws clause. + } + + @Override + public void render(long positionUs, long elapsedRealtimeUs) throws ExoPlaybackException { + if (pendingOutputEndOfStream) { + pendingOutputEndOfStream = false; + processEndOfStream(); + } + try { + if (outputStreamEnded) { + renderToEndOfStream(); + return; + } + if (inputFormat == null && !readToFlagsOnlyBuffer(/* requireFormat= */ true)) { + // We still don't have a format and can't make progress without one. + return; + } + // We have a format. + maybeInitCodec(); + if (codec != null) { + long drainStartTimeMs = SystemClock.elapsedRealtime(); + TraceUtil.beginSection("drainAndFeed"); + while (drainOutputBuffer(positionUs, elapsedRealtimeUs)) {} + while (feedInputBuffer() && shouldContinueFeeding(drainStartTimeMs)) {} + TraceUtil.endSection(); + } else { + decoderCounters.skippedInputBufferCount += skipSource(positionUs); + // We need to read any format changes despite not having a codec so that drmSession can be + // updated, and so that we have the most recent format should the codec be initialized. We + // may also reach the end of the stream. Note that readSource will not read a sample into a + // flags-only buffer. + readToFlagsOnlyBuffer(/* requireFormat= */ false); + } + decoderCounters.ensureUpdated(); + } catch (IllegalStateException e) { + if (isMediaCodecException(e)) { + throw createRendererException(e, inputFormat); + } + throw e; + } + } + + /** + * Flushes the codec. If flushing is not possible, the codec will be released and re-instantiated. + * This method is a no-op if the codec is {@code null}. + * + *

The implementation of this method calls {@link #flushOrReleaseCodec()}, and {@link + * #maybeInitCodec()} if the codec needs to be re-instantiated. + * + * @return Whether the codec was released and reinitialized, rather than being flushed. + * @throws ExoPlaybackException If an error occurs re-instantiating the codec. + */ + protected final boolean flushOrReinitializeCodec() throws ExoPlaybackException { + boolean released = flushOrReleaseCodec(); + if (released) { + maybeInitCodec(); + } + return released; + } + + /** + * Flushes the codec. If flushing is not possible, the codec will be released. This method is a + * no-op if the codec is {@code null}. + * + * @return Whether the codec was released. + */ + protected boolean flushOrReleaseCodec() { + if (codec == null) { + return false; + } + if (codecDrainAction == DRAIN_ACTION_REINITIALIZE + || codecNeedsFlushWorkaround + || (codecNeedsSosFlushWorkaround && !codecHasOutputMediaFormat) + || (codecNeedsEosFlushWorkaround && codecReceivedEos)) { + releaseCodec(); + return true; + } + + codec.flush(); + resetInputBuffer(); + resetOutputBuffer(); + codecHotswapDeadlineMs = C.TIME_UNSET; + codecReceivedEos = false; + codecReceivedBuffers = false; + waitingForFirstSyncSample = true; + codecNeedsAdaptationWorkaroundBuffer = false; + shouldSkipAdaptationWorkaroundOutputBuffer = false; + isDecodeOnlyOutputBuffer = false; + isLastOutputBuffer = false; + + waitingForKeys = false; + decodeOnlyPresentationTimestamps.clear(); + largestQueuedPresentationTimeUs = C.TIME_UNSET; + lastBufferInStreamPresentationTimeUs = C.TIME_UNSET; + codecDrainState = DRAIN_STATE_NONE; + codecDrainAction = DRAIN_ACTION_NONE; + // Reconfiguration data sent shortly before the flush may not have been processed by the + // decoder. If the codec has been reconfigured we always send reconfiguration data again to + // guarantee that it's processed. + codecReconfigurationState = + codecReconfigured ? RECONFIGURATION_STATE_WRITE_PENDING : RECONFIGURATION_STATE_NONE; + return false; + } + + protected DecoderException createDecoderException( + Throwable cause, @Nullable MediaCodecInfo codecInfo) { + return new DecoderException(cause, codecInfo); + } + + /** Reads into {@link #flagsOnlyBuffer} and returns whether a {@link Format} was read. */ + private boolean readToFlagsOnlyBuffer(boolean requireFormat) throws ExoPlaybackException { + FormatHolder formatHolder = getFormatHolder(); + flagsOnlyBuffer.clear(); + int result = readSource(formatHolder, flagsOnlyBuffer, requireFormat); + if (result == C.RESULT_FORMAT_READ) { + onInputFormatChanged(formatHolder); + return true; + } else if (result == C.RESULT_BUFFER_READ && flagsOnlyBuffer.isEndOfStream()) { + inputStreamEnded = true; + processEndOfStream(); + } + return false; + } + + private void maybeInitCodecWithFallback( + MediaCrypto crypto, boolean mediaCryptoRequiresSecureDecoder) + throws DecoderInitializationException { + if (availableCodecInfos == null) { + try { + List allAvailableCodecInfos = + getAvailableCodecInfos(mediaCryptoRequiresSecureDecoder); + availableCodecInfos = new ArrayDeque<>(); + if (enableDecoderFallback) { + availableCodecInfos.addAll(allAvailableCodecInfos); + } else if (!allAvailableCodecInfos.isEmpty()) { + availableCodecInfos.add(allAvailableCodecInfos.get(0)); + } + preferredDecoderInitializationException = null; + } catch (DecoderQueryException e) { + throw new DecoderInitializationException( + inputFormat, + e, + mediaCryptoRequiresSecureDecoder, + DecoderInitializationException.DECODER_QUERY_ERROR); + } + } + + if (availableCodecInfos.isEmpty()) { + throw new DecoderInitializationException( + inputFormat, + /* cause= */ null, + mediaCryptoRequiresSecureDecoder, + DecoderInitializationException.NO_SUITABLE_DECODER_ERROR); + } + + while (codec == null) { + MediaCodecInfo codecInfo = availableCodecInfos.peekFirst(); + if (!shouldInitCodec(codecInfo)) { + return; + } + try { + initCodec(codecInfo, crypto); + } catch (Exception e) { + Log.w(TAG, "Failed to initialize decoder: " + codecInfo, e); + // This codec failed to initialize, so fall back to the next codec in the list (if any). We + // won't try to use this codec again unless there's a format change or the renderer is + // disabled and re-enabled. + availableCodecInfos.removeFirst(); + DecoderInitializationException exception = + new DecoderInitializationException( + inputFormat, e, mediaCryptoRequiresSecureDecoder, codecInfo); + if (preferredDecoderInitializationException == null) { + preferredDecoderInitializationException = exception; + } else { + preferredDecoderInitializationException = + preferredDecoderInitializationException.copyWithFallbackException(exception); + } + if (availableCodecInfos.isEmpty()) { + throw preferredDecoderInitializationException; + } + } + } + + availableCodecInfos = null; + } + + private List getAvailableCodecInfos(boolean mediaCryptoRequiresSecureDecoder) + throws DecoderQueryException { + List codecInfos = + getDecoderInfos(mediaCodecSelector, inputFormat, mediaCryptoRequiresSecureDecoder); + if (codecInfos.isEmpty() && mediaCryptoRequiresSecureDecoder) { + // The drm session indicates that a secure decoder is required, but the device does not + // have one. Assuming that supportsFormat indicated support for the media being played, we + // know that it does not require a secure output path. Most CDM implementations allow + // playback to proceed with a non-secure decoder in this case, so we try our luck. + codecInfos = + getDecoderInfos(mediaCodecSelector, inputFormat, /* requiresSecureDecoder= */ false); + if (!codecInfos.isEmpty()) { + Log.w( + TAG, + "Drm session requires secure decoder for " + + inputFormat.sampleMimeType + + ", but no secure decoder available. Trying to proceed with " + + codecInfos + + "."); + } + } + return codecInfos; + } + + private void initCodec(MediaCodecInfo codecInfo, MediaCrypto crypto) throws Exception { + long codecInitializingTimestamp; + long codecInitializedTimestamp; + MediaCodec codec = null; + String codecName = codecInfo.name; + + float codecOperatingRate = + Util.SDK_INT < 23 + ? CODEC_OPERATING_RATE_UNSET + : getCodecOperatingRateV23(rendererOperatingRate, inputFormat, getStreamFormats()); + if (codecOperatingRate <= assumedMinimumCodecOperatingRate) { + codecOperatingRate = CODEC_OPERATING_RATE_UNSET; + } + try { + codecInitializingTimestamp = SystemClock.elapsedRealtime(); + TraceUtil.beginSection("createCodec:" + codecName); + codec = MediaCodec.createByCodecName(codecName); + TraceUtil.endSection(); + TraceUtil.beginSection("configureCodec"); + configureCodec(codecInfo, codec, inputFormat, crypto, codecOperatingRate); + TraceUtil.endSection(); + TraceUtil.beginSection("startCodec"); + codec.start(); + TraceUtil.endSection(); + codecInitializedTimestamp = SystemClock.elapsedRealtime(); + getCodecBuffers(codec); + } catch (Exception e) { + if (codec != null) { + resetCodecBuffers(); + codec.release(); + } + throw e; + } + + this.codec = codec; + this.codecInfo = codecInfo; + this.codecOperatingRate = codecOperatingRate; + codecFormat = inputFormat; + codecAdaptationWorkaroundMode = codecAdaptationWorkaroundMode(codecName); + codecNeedsReconfigureWorkaround = codecNeedsReconfigureWorkaround(codecName); + codecNeedsDiscardToSpsWorkaround = codecNeedsDiscardToSpsWorkaround(codecName, codecFormat); + codecNeedsFlushWorkaround = codecNeedsFlushWorkaround(codecName); + codecNeedsSosFlushWorkaround = codecNeedsSosFlushWorkaround(codecName); + codecNeedsEosFlushWorkaround = codecNeedsEosFlushWorkaround(codecName); + codecNeedsEosOutputExceptionWorkaround = codecNeedsEosOutputExceptionWorkaround(codecName); + codecNeedsMonoChannelCountWorkaround = + codecNeedsMonoChannelCountWorkaround(codecName, codecFormat); + codecNeedsEosPropagation = + codecNeedsEosPropagationWorkaround(codecInfo) || getCodecNeedsEosPropagation(); + + resetInputBuffer(); + resetOutputBuffer(); + codecHotswapDeadlineMs = + getState() == STATE_STARTED + ? (SystemClock.elapsedRealtime() + MAX_CODEC_HOTSWAP_TIME_MS) + : C.TIME_UNSET; + codecReconfigured = false; + codecReconfigurationState = RECONFIGURATION_STATE_NONE; + codecReceivedEos = false; + codecReceivedBuffers = false; + largestQueuedPresentationTimeUs = C.TIME_UNSET; + lastBufferInStreamPresentationTimeUs = C.TIME_UNSET; + codecDrainState = DRAIN_STATE_NONE; + codecDrainAction = DRAIN_ACTION_NONE; + codecNeedsAdaptationWorkaroundBuffer = false; + shouldSkipAdaptationWorkaroundOutputBuffer = false; + isDecodeOnlyOutputBuffer = false; + isLastOutputBuffer = false; + waitingForFirstSyncSample = true; + + decoderCounters.decoderInitCount++; + long elapsed = codecInitializedTimestamp - codecInitializingTimestamp; + onCodecInitialized(codecName, codecInitializedTimestamp, elapsed); + } + + private boolean shouldContinueFeeding(long drainStartTimeMs) { + return renderTimeLimitMs == C.TIME_UNSET + || SystemClock.elapsedRealtime() - drainStartTimeMs < renderTimeLimitMs; + } + + private void getCodecBuffers(MediaCodec codec) { + if (Util.SDK_INT < 21) { + inputBuffers = codec.getInputBuffers(); + outputBuffers = codec.getOutputBuffers(); + } + } + + private void resetCodecBuffers() { + if (Util.SDK_INT < 21) { + inputBuffers = null; + outputBuffers = null; + } + } + + private ByteBuffer getInputBuffer(int inputIndex) { + if (Util.SDK_INT >= 21) { + return codec.getInputBuffer(inputIndex); + } else { + return inputBuffers[inputIndex]; + } + } + + private ByteBuffer getOutputBuffer(int outputIndex) { + if (Util.SDK_INT >= 21) { + return codec.getOutputBuffer(outputIndex); + } else { + return outputBuffers[outputIndex]; + } + } + + private boolean hasOutputBuffer() { + return outputIndex >= 0; + } + + private void resetInputBuffer() { + inputIndex = C.INDEX_UNSET; + buffer.data = null; + } + + private void resetOutputBuffer() { + outputIndex = C.INDEX_UNSET; + outputBuffer = null; + } + + private void setSourceDrmSession(@Nullable DrmSession session) { + DrmSession.replaceSession(sourceDrmSession, session); + sourceDrmSession = session; + } + + private void setCodecDrmSession(@Nullable DrmSession session) { + DrmSession.replaceSession(codecDrmSession, session); + codecDrmSession = session; + } + + /** + * @return Whether it may be possible to feed more input data. + * @throws ExoPlaybackException If an error occurs feeding the input buffer. + */ + private boolean feedInputBuffer() throws ExoPlaybackException { + if (codec == null || codecDrainState == DRAIN_STATE_WAIT_END_OF_STREAM || inputStreamEnded) { + return false; + } + + if (inputIndex < 0) { + inputIndex = codec.dequeueInputBuffer(0); + if (inputIndex < 0) { + return false; + } + buffer.data = getInputBuffer(inputIndex); + buffer.clear(); + } + + if (codecDrainState == DRAIN_STATE_SIGNAL_END_OF_STREAM) { + // We need to re-initialize the codec. Send an end of stream signal to the existing codec so + // that it outputs any remaining buffers before we release it. + if (codecNeedsEosPropagation) { + // Do nothing. + } else { + codecReceivedEos = true; + codec.queueInputBuffer(inputIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM); + resetInputBuffer(); + } + codecDrainState = DRAIN_STATE_WAIT_END_OF_STREAM; + return false; + } + + if (codecNeedsAdaptationWorkaroundBuffer) { + codecNeedsAdaptationWorkaroundBuffer = false; + buffer.data.put(ADAPTATION_WORKAROUND_BUFFER); + codec.queueInputBuffer(inputIndex, 0, ADAPTATION_WORKAROUND_BUFFER.length, 0, 0); + resetInputBuffer(); + codecReceivedBuffers = true; + return true; + } + + int result; + FormatHolder formatHolder = getFormatHolder(); + int adaptiveReconfigurationBytes = 0; + if (waitingForKeys) { + // We've already read an encrypted sample into buffer, and are waiting for keys. + result = C.RESULT_BUFFER_READ; + } else { + // For adaptive reconfiguration OMX decoders expect all reconfiguration data to be supplied + // at the start of the buffer that also contains the first frame in the new format. + if (codecReconfigurationState == RECONFIGURATION_STATE_WRITE_PENDING) { + for (int i = 0; i < codecFormat.initializationData.size(); i++) { + byte[] data = codecFormat.initializationData.get(i); + buffer.data.put(data); + } + codecReconfigurationState = RECONFIGURATION_STATE_QUEUE_PENDING; + } + adaptiveReconfigurationBytes = buffer.data.position(); + result = readSource(formatHolder, buffer, false); + } + + if (hasReadStreamToEnd()) { + // Notify output queue of the last buffer's timestamp. + lastBufferInStreamPresentationTimeUs = largestQueuedPresentationTimeUs; + } + + if (result == C.RESULT_NOTHING_READ) { + return false; + } + if (result == C.RESULT_FORMAT_READ) { + if (codecReconfigurationState == RECONFIGURATION_STATE_QUEUE_PENDING) { + // We received two formats in a row. Clear the current buffer of any reconfiguration data + // associated with the first format. + buffer.clear(); + codecReconfigurationState = RECONFIGURATION_STATE_WRITE_PENDING; + } + onInputFormatChanged(formatHolder); + return true; + } + + // We've read a buffer. + if (buffer.isEndOfStream()) { + if (codecReconfigurationState == RECONFIGURATION_STATE_QUEUE_PENDING) { + // We received a new format immediately before the end of the stream. We need to clear + // the corresponding reconfiguration data from the current buffer, but re-write it into + // a subsequent buffer if there are any (e.g. if the user seeks backwards). + buffer.clear(); + codecReconfigurationState = RECONFIGURATION_STATE_WRITE_PENDING; + } + inputStreamEnded = true; + if (!codecReceivedBuffers) { + processEndOfStream(); + return false; + } + try { + if (codecNeedsEosPropagation) { + // Do nothing. + } else { + codecReceivedEos = true; + codec.queueInputBuffer(inputIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM); + resetInputBuffer(); + } + } catch (CryptoException e) { + throw createRendererException(e, inputFormat); + } + return false; + } + if (waitingForFirstSyncSample && !buffer.isKeyFrame()) { + buffer.clear(); + if (codecReconfigurationState == RECONFIGURATION_STATE_QUEUE_PENDING) { + // The buffer we just cleared contained reconfiguration data. We need to re-write this + // data into a subsequent buffer (if there is one). + codecReconfigurationState = RECONFIGURATION_STATE_WRITE_PENDING; + } + return true; + } + waitingForFirstSyncSample = false; + boolean bufferEncrypted = buffer.isEncrypted(); + waitingForKeys = shouldWaitForKeys(bufferEncrypted); + if (waitingForKeys) { + return false; + } + if (codecNeedsDiscardToSpsWorkaround && !bufferEncrypted) { + NalUnitUtil.discardToSps(buffer.data); + if (buffer.data.position() == 0) { + return true; + } + codecNeedsDiscardToSpsWorkaround = false; + } + try { + long presentationTimeUs = buffer.timeUs; + if (buffer.isDecodeOnly()) { + decodeOnlyPresentationTimestamps.add(presentationTimeUs); + } + if (waitingForFirstSampleInFormat) { + formatQueue.add(presentationTimeUs, inputFormat); + waitingForFirstSampleInFormat = false; + } + largestQueuedPresentationTimeUs = + Math.max(largestQueuedPresentationTimeUs, presentationTimeUs); + + buffer.flip(); + if (buffer.hasSupplementalData()) { + handleInputBufferSupplementalData(buffer); + } + onQueueInputBuffer(buffer); + + if (bufferEncrypted) { + MediaCodec.CryptoInfo cryptoInfo = getFrameworkCryptoInfo(buffer, + adaptiveReconfigurationBytes); + codec.queueSecureInputBuffer(inputIndex, 0, cryptoInfo, presentationTimeUs, 0); + } else { + codec.queueInputBuffer(inputIndex, 0, buffer.data.limit(), presentationTimeUs, 0); + } + resetInputBuffer(); + codecReceivedBuffers = true; + codecReconfigurationState = RECONFIGURATION_STATE_NONE; + decoderCounters.inputBufferCount++; + } catch (CryptoException e) { + throw createRendererException(e, inputFormat); + } + return true; + } + + private boolean shouldWaitForKeys(boolean bufferEncrypted) throws ExoPlaybackException { + if (codecDrmSession == null + || (!bufferEncrypted + && (playClearSamplesWithoutKeys || codecDrmSession.playClearSamplesWithoutKeys()))) { + return false; + } + @DrmSession.State int drmSessionState = codecDrmSession.getState(); + if (drmSessionState == DrmSession.STATE_ERROR) { + throw createRendererException(codecDrmSession.getError(), inputFormat); + } + return drmSessionState != DrmSession.STATE_OPENED_WITH_KEYS; + } + + /** + * Called when a {@link MediaCodec} has been created and configured. + *

+ * The default implementation is a no-op. + * + * @param name The name of the codec that was initialized. + * @param initializedTimestampMs {@link SystemClock#elapsedRealtime()} when initialization + * finished. + * @param initializationDurationMs The time taken to initialize the codec in milliseconds. + */ + protected void onCodecInitialized(String name, long initializedTimestampMs, + long initializationDurationMs) { + // Do nothing. + } + + /** + * Called when a new {@link Format} is read from the upstream {@link MediaPeriod}. + * + * @param formatHolder A {@link FormatHolder} that holds the new {@link Format}. + * @throws ExoPlaybackException If an error occurs re-initializing the {@link MediaCodec}. + */ + @SuppressWarnings("unchecked") + protected void onInputFormatChanged(FormatHolder formatHolder) throws ExoPlaybackException { + waitingForFirstSampleInFormat = true; + Format newFormat = Assertions.checkNotNull(formatHolder.format); + if (formatHolder.includesDrmSession) { + setSourceDrmSession((DrmSession) formatHolder.drmSession); + } else { + sourceDrmSession = + getUpdatedSourceDrmSession(inputFormat, newFormat, drmSessionManager, sourceDrmSession); + } + inputFormat = newFormat; + + if (codec == null) { + maybeInitCodec(); + return; + } + + // We have an existing codec that we may need to reconfigure or re-initialize. If the existing + // codec instance is being kept then its operating rate may need to be updated. + + if ((sourceDrmSession == null && codecDrmSession != null) + || (sourceDrmSession != null && codecDrmSession == null) + || (sourceDrmSession != codecDrmSession + && !codecInfo.secure + && maybeRequiresSecureDecoder(sourceDrmSession, newFormat)) + || (Util.SDK_INT < 23 && sourceDrmSession != codecDrmSession)) { + // We might need to switch between the clear and protected output paths, or we're using DRM + // prior to API level 23 where the codec needs to be re-initialized to switch to the new DRM + // session. + drainAndReinitializeCodec(); + return; + } + + switch (canKeepCodec(codec, codecInfo, codecFormat, newFormat)) { + case KEEP_CODEC_RESULT_NO: + drainAndReinitializeCodec(); + break; + case KEEP_CODEC_RESULT_YES_WITH_FLUSH: + codecFormat = newFormat; + updateCodecOperatingRate(); + if (sourceDrmSession != codecDrmSession) { + drainAndUpdateCodecDrmSession(); + } else { + drainAndFlushCodec(); + } + break; + case KEEP_CODEC_RESULT_YES_WITH_RECONFIGURATION: + if (codecNeedsReconfigureWorkaround) { + drainAndReinitializeCodec(); + } else { + codecReconfigured = true; + codecReconfigurationState = RECONFIGURATION_STATE_WRITE_PENDING; + codecNeedsAdaptationWorkaroundBuffer = + codecAdaptationWorkaroundMode == ADAPTATION_WORKAROUND_MODE_ALWAYS + || (codecAdaptationWorkaroundMode == ADAPTATION_WORKAROUND_MODE_SAME_RESOLUTION + && newFormat.width == codecFormat.width + && newFormat.height == codecFormat.height); + codecFormat = newFormat; + updateCodecOperatingRate(); + if (sourceDrmSession != codecDrmSession) { + drainAndUpdateCodecDrmSession(); + } + } + break; + case KEEP_CODEC_RESULT_YES_WITHOUT_RECONFIGURATION: + codecFormat = newFormat; + updateCodecOperatingRate(); + if (sourceDrmSession != codecDrmSession) { + drainAndUpdateCodecDrmSession(); + } + break; + default: + throw new IllegalStateException(); // Never happens. + } + } + + /** + * Called when the output {@link MediaFormat} of the {@link MediaCodec} changes. + * + *

The default implementation is a no-op. + * + * @param codec The {@link MediaCodec} instance. + * @param outputMediaFormat The new output {@link MediaFormat}. + * @throws ExoPlaybackException Thrown if an error occurs handling the new output media format. + */ + protected void onOutputFormatChanged(MediaCodec codec, MediaFormat outputMediaFormat) + throws ExoPlaybackException { + // Do nothing. + } + + /** + * Handles supplemental data associated with an input buffer. + * + *

The default implementation is a no-op. + * + * @param buffer The input buffer that is about to be queued. + * @throws ExoPlaybackException Thrown if an error occurs handling supplemental data. + */ + protected void handleInputBufferSupplementalData(DecoderInputBuffer buffer) + throws ExoPlaybackException { + // Do nothing. + } + + /** + * Called immediately before an input buffer is queued into the codec. + * + *

The default implementation is a no-op. + * + * @param buffer The buffer to be queued. + */ + protected void onQueueInputBuffer(DecoderInputBuffer buffer) { + // Do nothing. + } + + /** + * Called when an output buffer is successfully processed. + *

+ * The default implementation is a no-op. + * + * @param presentationTimeUs The timestamp associated with the output buffer. + */ + protected void onProcessedOutputBuffer(long presentationTimeUs) { + // Do nothing. + } + + /** + * Determines whether the existing {@link MediaCodec} can be kept for a new {@link Format}, and if + * it can whether it requires reconfiguration. + * + *

The default implementation returns {@link #KEEP_CODEC_RESULT_NO}. + * + * @param codec The existing {@link MediaCodec} instance. + * @param codecInfo A {@link MediaCodecInfo} describing the decoder. + * @param oldFormat The {@link Format} for which the existing instance is configured. + * @param newFormat The new {@link Format}. + * @return Whether the instance can be kept, and if it can whether it requires reconfiguration. + */ + protected @KeepCodecResult int canKeepCodec( + MediaCodec codec, MediaCodecInfo codecInfo, Format oldFormat, Format newFormat) { + return KEEP_CODEC_RESULT_NO; + } + + @Override + public boolean isEnded() { + return outputStreamEnded; + } + + @Override + public boolean isReady() { + return inputFormat != null + && !waitingForKeys + && (isSourceReady() + || hasOutputBuffer() + || (codecHotswapDeadlineMs != C.TIME_UNSET + && SystemClock.elapsedRealtime() < codecHotswapDeadlineMs)); + } + + /** + * Returns the maximum time to block whilst waiting for a decoded output buffer. + * + * @return The maximum time to block, in microseconds. + */ + protected long getDequeueOutputBufferTimeoutUs() { + return 0; + } + + /** + * Returns the {@link MediaFormat#KEY_OPERATING_RATE} value for a given renderer operating rate, + * current {@link Format} and set of possible stream formats. + * + *

The default implementation returns {@link #CODEC_OPERATING_RATE_UNSET}. + * + * @param operatingRate The renderer operating rate. + * @param format The {@link Format} for which the codec is being configured. + * @param streamFormats The possible stream formats. + * @return The codec operating rate, or {@link #CODEC_OPERATING_RATE_UNSET} if no codec operating + * rate should be set. + */ + protected float getCodecOperatingRateV23( + float operatingRate, Format format, Format[] streamFormats) { + return CODEC_OPERATING_RATE_UNSET; + } + + /** + * Updates the codec operating rate. + * + * @throws ExoPlaybackException If an error occurs releasing or initializing a codec. + */ + private void updateCodecOperatingRate() throws ExoPlaybackException { + if (Util.SDK_INT < 23) { + return; + } + + float newCodecOperatingRate = + getCodecOperatingRateV23(rendererOperatingRate, codecFormat, getStreamFormats()); + if (codecOperatingRate == newCodecOperatingRate) { + // No change. + } else if (newCodecOperatingRate == CODEC_OPERATING_RATE_UNSET) { + // The only way to clear the operating rate is to instantiate a new codec instance. See + // [Internal ref: b/71987865]. + drainAndReinitializeCodec(); + } else if (codecOperatingRate != CODEC_OPERATING_RATE_UNSET + || newCodecOperatingRate > assumedMinimumCodecOperatingRate) { + // We need to set the operating rate, either because we've set it previously or because it's + // above the assumed minimum rate. + Bundle codecParameters = new Bundle(); + codecParameters.putFloat(MediaFormat.KEY_OPERATING_RATE, newCodecOperatingRate); + codec.setParameters(codecParameters); + codecOperatingRate = newCodecOperatingRate; + } + } + + /** Starts draining the codec for flush. */ + private void drainAndFlushCodec() { + if (codecReceivedBuffers) { + codecDrainState = DRAIN_STATE_SIGNAL_END_OF_STREAM; + codecDrainAction = DRAIN_ACTION_FLUSH; + } + } + + /** + * Starts draining the codec to update its DRM session. The update may occur immediately if no + * buffers have been queued to the codec. + * + * @throws ExoPlaybackException If an error occurs updating the codec's DRM session. + */ + private void drainAndUpdateCodecDrmSession() throws ExoPlaybackException { + if (Util.SDK_INT < 23) { + // The codec needs to be re-initialized to switch to the source DRM session. + drainAndReinitializeCodec(); + return; + } + if (codecReceivedBuffers) { + codecDrainState = DRAIN_STATE_SIGNAL_END_OF_STREAM; + codecDrainAction = DRAIN_ACTION_UPDATE_DRM_SESSION; + } else { + // Nothing has been queued to the decoder, so we can do the update immediately. + updateDrmSessionOrReinitializeCodecV23(); + } + } + + /** + * Starts draining the codec for re-initialization. Re-initialization may occur immediately if no + * buffers have been queued to the codec. + * + * @throws ExoPlaybackException If an error occurs re-initializing a codec. + */ + private void drainAndReinitializeCodec() throws ExoPlaybackException { + if (codecReceivedBuffers) { + codecDrainState = DRAIN_STATE_SIGNAL_END_OF_STREAM; + codecDrainAction = DRAIN_ACTION_REINITIALIZE; + } else { + // Nothing has been queued to the decoder, so we can re-initialize immediately. + reinitializeCodec(); + } + } + + /** + * @return Whether it may be possible to drain more output data. + * @throws ExoPlaybackException If an error occurs draining the output buffer. + */ + private boolean drainOutputBuffer(long positionUs, long elapsedRealtimeUs) + throws ExoPlaybackException { + if (!hasOutputBuffer()) { + int outputIndex; + if (codecNeedsEosOutputExceptionWorkaround && codecReceivedEos) { + try { + outputIndex = + codec.dequeueOutputBuffer(outputBufferInfo, getDequeueOutputBufferTimeoutUs()); + } catch (IllegalStateException e) { + processEndOfStream(); + if (outputStreamEnded) { + // Release the codec, as it's in an error state. + releaseCodec(); + } + return false; + } + } else { + outputIndex = + codec.dequeueOutputBuffer(outputBufferInfo, getDequeueOutputBufferTimeoutUs()); + } + + if (outputIndex < 0) { + if (outputIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED /* (-2) */) { + processOutputFormat(); + return true; + } else if (outputIndex == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED /* (-3) */) { + processOutputBuffersChanged(); + return true; + } + /* MediaCodec.INFO_TRY_AGAIN_LATER (-1) or unknown negative return value */ + if (codecNeedsEosPropagation + && (inputStreamEnded || codecDrainState == DRAIN_STATE_WAIT_END_OF_STREAM)) { + processEndOfStream(); + } + return false; + } + + // We've dequeued a buffer. + if (shouldSkipAdaptationWorkaroundOutputBuffer) { + shouldSkipAdaptationWorkaroundOutputBuffer = false; + codec.releaseOutputBuffer(outputIndex, false); + return true; + } else if (outputBufferInfo.size == 0 + && (outputBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) { + // The dequeued buffer indicates the end of the stream. Process it immediately. + processEndOfStream(); + return false; + } + + this.outputIndex = outputIndex; + outputBuffer = getOutputBuffer(outputIndex); + // The dequeued buffer is a media buffer. Do some initial setup. + // It will be processed by calling processOutputBuffer (possibly multiple times). + if (outputBuffer != null) { + outputBuffer.position(outputBufferInfo.offset); + outputBuffer.limit(outputBufferInfo.offset + outputBufferInfo.size); + } + isDecodeOnlyOutputBuffer = isDecodeOnlyBuffer(outputBufferInfo.presentationTimeUs); + isLastOutputBuffer = + lastBufferInStreamPresentationTimeUs == outputBufferInfo.presentationTimeUs; + updateOutputFormatForTime(outputBufferInfo.presentationTimeUs); + } + + boolean processedOutputBuffer; + if (codecNeedsEosOutputExceptionWorkaround && codecReceivedEos) { + try { + processedOutputBuffer = + processOutputBuffer( + positionUs, + elapsedRealtimeUs, + codec, + outputBuffer, + outputIndex, + outputBufferInfo.flags, + outputBufferInfo.presentationTimeUs, + isDecodeOnlyOutputBuffer, + isLastOutputBuffer, + outputFormat); + } catch (IllegalStateException e) { + processEndOfStream(); + if (outputStreamEnded) { + // Release the codec, as it's in an error state. + releaseCodec(); + } + return false; + } + } else { + processedOutputBuffer = + processOutputBuffer( + positionUs, + elapsedRealtimeUs, + codec, + outputBuffer, + outputIndex, + outputBufferInfo.flags, + outputBufferInfo.presentationTimeUs, + isDecodeOnlyOutputBuffer, + isLastOutputBuffer, + outputFormat); + } + + if (processedOutputBuffer) { + onProcessedOutputBuffer(outputBufferInfo.presentationTimeUs); + boolean isEndOfStream = (outputBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0; + resetOutputBuffer(); + if (!isEndOfStream) { + return true; + } + processEndOfStream(); + } + + return false; + } + + /** Processes a new output {@link MediaFormat}. */ + private void processOutputFormat() throws ExoPlaybackException { + codecHasOutputMediaFormat = true; + MediaFormat mediaFormat = codec.getOutputFormat(); + if (codecAdaptationWorkaroundMode != ADAPTATION_WORKAROUND_MODE_NEVER + && mediaFormat.getInteger(MediaFormat.KEY_WIDTH) == ADAPTATION_WORKAROUND_SLICE_WIDTH_HEIGHT + && mediaFormat.getInteger(MediaFormat.KEY_HEIGHT) + == ADAPTATION_WORKAROUND_SLICE_WIDTH_HEIGHT) { + // We assume this format changed event was caused by the adaptation workaround. + shouldSkipAdaptationWorkaroundOutputBuffer = true; + return; + } + if (codecNeedsMonoChannelCountWorkaround) { + mediaFormat.setInteger(MediaFormat.KEY_CHANNEL_COUNT, 1); + } + onOutputFormatChanged(codec, mediaFormat); + } + + /** + * Processes a change in the output buffers. + */ + private void processOutputBuffersChanged() { + if (Util.SDK_INT < 21) { + outputBuffers = codec.getOutputBuffers(); + } + } + + /** + * Processes an output media buffer. + * + *

When a new {@link ByteBuffer} is passed to this method its position and limit delineate the + * data to be processed. The return value indicates whether the buffer was processed in full. If + * true is returned then the next call to this method will receive a new buffer to be processed. + * If false is returned then the same buffer will be passed to the next call. An implementation of + * this method is free to modify the buffer and can assume that the buffer will not be externally + * modified between successive calls. Hence an implementation can, for example, modify the + * buffer's position to keep track of how much of the data it has processed. + * + *

Note that the first call to this method following a call to {@link #onPositionReset(long, + * boolean)} will always receive a new {@link ByteBuffer} to be processed. + * + * @param positionUs The current media time in microseconds, measured at the start of the current + * iteration of the rendering loop. + * @param elapsedRealtimeUs {@link SystemClock#elapsedRealtime()} in microseconds, measured at the + * start of the current iteration of the rendering loop. + * @param codec The {@link MediaCodec} instance. + * @param buffer The output buffer to process. + * @param bufferIndex The index of the output buffer. + * @param bufferFlags The flags attached to the output buffer. + * @param bufferPresentationTimeUs The presentation time of the output buffer in microseconds. + * @param isDecodeOnlyBuffer Whether the buffer was marked with {@link C#BUFFER_FLAG_DECODE_ONLY} + * by the source. + * @param isLastBuffer Whether the buffer is the last sample of the current stream. + * @param format The {@link Format} associated with the buffer. + * @return Whether the output buffer was fully processed (e.g. rendered or skipped). + * @throws ExoPlaybackException If an error occurs processing the output buffer. + */ + protected abstract boolean processOutputBuffer( + long positionUs, + long elapsedRealtimeUs, + MediaCodec codec, + ByteBuffer buffer, + int bufferIndex, + int bufferFlags, + long bufferPresentationTimeUs, + boolean isDecodeOnlyBuffer, + boolean isLastBuffer, + Format format) + throws ExoPlaybackException; + + /** + * Incrementally renders any remaining output. + *

+ * The default implementation is a no-op. + * + * @throws ExoPlaybackException Thrown if an error occurs rendering remaining output. + */ + protected void renderToEndOfStream() throws ExoPlaybackException { + // Do nothing. + } + + /** + * Processes an end of stream signal. + * + * @throws ExoPlaybackException If an error occurs processing the signal. + */ + private void processEndOfStream() throws ExoPlaybackException { + switch (codecDrainAction) { + case DRAIN_ACTION_REINITIALIZE: + reinitializeCodec(); + break; + case DRAIN_ACTION_UPDATE_DRM_SESSION: + updateDrmSessionOrReinitializeCodecV23(); + break; + case DRAIN_ACTION_FLUSH: + flushOrReinitializeCodec(); + break; + case DRAIN_ACTION_NONE: + default: + outputStreamEnded = true; + renderToEndOfStream(); + break; + } + } + + /** + * Notifies the renderer that output end of stream is pending and should be handled on the next + * render. + */ + protected final void setPendingOutputEndOfStream() { + pendingOutputEndOfStream = true; + } + + private void reinitializeCodec() throws ExoPlaybackException { + releaseCodec(); + maybeInitCodec(); + } + + private boolean isDecodeOnlyBuffer(long presentationTimeUs) { + // We avoid using decodeOnlyPresentationTimestamps.remove(presentationTimeUs) because it would + // box presentationTimeUs, creating a Long object that would need to be garbage collected. + int size = decodeOnlyPresentationTimestamps.size(); + for (int i = 0; i < size; i++) { + if (decodeOnlyPresentationTimestamps.get(i) == presentationTimeUs) { + decodeOnlyPresentationTimestamps.remove(i); + return true; + } + } + return false; + } + + @TargetApi(23) + private void updateDrmSessionOrReinitializeCodecV23() throws ExoPlaybackException { + @Nullable FrameworkMediaCrypto sessionMediaCrypto = sourceDrmSession.getMediaCrypto(); + if (sessionMediaCrypto == null) { + // We'd only expect this to happen if the CDM from which the pending session is obtained needs + // provisioning. This is unlikely to happen (it probably requires a switch from one DRM scheme + // to another, where the new CDM hasn't been used before and needs provisioning). It would be + // possible to handle this case more efficiently (i.e. with a new renderer state that waits + // for provisioning to finish and then calls mediaCrypto.setMediaDrmSession), but the extra + // complexity is not warranted given how unlikely the case is to occur. + reinitializeCodec(); + return; + } + if (C.PLAYREADY_UUID.equals(sessionMediaCrypto.uuid)) { + // The PlayReady CDM does not implement setMediaDrmSession. + // TODO: Add API check once [Internal ref: b/128835874] is fixed. + reinitializeCodec(); + return; + } + + if (flushOrReinitializeCodec()) { + // The codec was reinitialized. The new codec will be using the new DRM session, so there's + // nothing more to do. + return; + } + + try { + mediaCrypto.setMediaDrmSession(sessionMediaCrypto.sessionId); + } catch (MediaCryptoException e) { + throw createRendererException(e, inputFormat); + } + setCodecDrmSession(sourceDrmSession); + codecDrainState = DRAIN_STATE_NONE; + codecDrainAction = DRAIN_ACTION_NONE; + } + + /** + * Returns whether a {@link DrmSession} may require a secure decoder for a given {@link Format}. + * + * @param drmSession The {@link DrmSession}. + * @param format The {@link Format}. + * @return Whether a secure decoder may be required. + */ + private static boolean maybeRequiresSecureDecoder( + DrmSession drmSession, Format format) { + @Nullable FrameworkMediaCrypto sessionMediaCrypto = drmSession.getMediaCrypto(); + if (sessionMediaCrypto == null) { + // We'd only expect this to happen if the CDM from which the pending session is obtained needs + // provisioning. This is unlikely to happen (it probably requires a switch from one DRM scheme + // to another, where the new CDM hasn't been used before and needs provisioning). Assume that + // a secure decoder may be required. + return true; + } + if (sessionMediaCrypto.forceAllowInsecureDecoderComponents) { + return false; + } + MediaCrypto mediaCrypto; + try { + mediaCrypto = new MediaCrypto(sessionMediaCrypto.uuid, sessionMediaCrypto.sessionId); + } catch (MediaCryptoException e) { + // This shouldn't happen, but if it does then assume that a secure decoder may be required. + return true; + } + try { + return mediaCrypto.requiresSecureDecoderComponent(format.sampleMimeType); + } finally { + mediaCrypto.release(); + } + } + + private static MediaCodec.CryptoInfo getFrameworkCryptoInfo( + DecoderInputBuffer buffer, int adaptiveReconfigurationBytes) { + MediaCodec.CryptoInfo cryptoInfo = buffer.cryptoInfo.getFrameworkCryptoInfo(); + if (adaptiveReconfigurationBytes == 0) { + return cryptoInfo; + } + // There must be at least one sub-sample, although numBytesOfClearData is permitted to be + // null if it contains no clear data. Instantiate it if needed, and add the reconfiguration + // bytes to the clear byte count of the first sub-sample. + if (cryptoInfo.numBytesOfClearData == null) { + cryptoInfo.numBytesOfClearData = new int[1]; + } + cryptoInfo.numBytesOfClearData[0] += adaptiveReconfigurationBytes; + return cryptoInfo; + } + + private static boolean isMediaCodecException(IllegalStateException error) { + if (Util.SDK_INT >= 21 && isMediaCodecExceptionV21(error)) { + return true; + } + StackTraceElement[] stackTrace = error.getStackTrace(); + return stackTrace.length > 0 && stackTrace[0].getClassName().equals("android.media.MediaCodec"); + } + + @TargetApi(21) + private static boolean isMediaCodecExceptionV21(IllegalStateException error) { + return error instanceof MediaCodec.CodecException; + } + + /** + * Returns whether the decoder is known to fail when flushed. + *

+ * If true is returned, the renderer will work around the issue by releasing the decoder and + * instantiating a new one rather than flushing the current instance. + *

+ * See [Internal: b/8347958, b/8543366]. + * + * @param name The name of the decoder. + * @return True if the decoder is known to fail when flushed. + */ + private static boolean codecNeedsFlushWorkaround(String name) { + return Util.SDK_INT < 18 + || (Util.SDK_INT == 18 + && ("OMX.SEC.avc.dec".equals(name) || "OMX.SEC.avc.dec.secure".equals(name))) + || (Util.SDK_INT == 19 && Util.MODEL.startsWith("SM-G800") + && ("OMX.Exynos.avc.dec".equals(name) || "OMX.Exynos.avc.dec.secure".equals(name))); + } + + /** + * Returns a mode that specifies when the adaptation workaround should be enabled. + * + *

When enabled, the workaround queues and discards a blank frame with a resolution whose width + * and height both equal {@link #ADAPTATION_WORKAROUND_SLICE_WIDTH_HEIGHT}, to reset the decoder's + * internal state when a format change occurs. + * + *

See [Internal: b/27807182]. See GitHub issue #3257. + * + * @param name The name of the decoder. + * @return The mode specifying when the adaptation workaround should be enabled. + */ + private @AdaptationWorkaroundMode int codecAdaptationWorkaroundMode(String name) { + if (Util.SDK_INT <= 25 && "OMX.Exynos.avc.dec.secure".equals(name) + && (Util.MODEL.startsWith("SM-T585") || Util.MODEL.startsWith("SM-A510") + || Util.MODEL.startsWith("SM-A520") || Util.MODEL.startsWith("SM-J700"))) { + return ADAPTATION_WORKAROUND_MODE_ALWAYS; + } else if (Util.SDK_INT < 24 + && ("OMX.Nvidia.h264.decode".equals(name) || "OMX.Nvidia.h264.decode.secure".equals(name)) + && ("flounder".equals(Util.DEVICE) || "flounder_lte".equals(Util.DEVICE) + || "grouper".equals(Util.DEVICE) || "tilapia".equals(Util.DEVICE))) { + return ADAPTATION_WORKAROUND_MODE_SAME_RESOLUTION; + } else { + return ADAPTATION_WORKAROUND_MODE_NEVER; + } + } + + /** + * Returns whether the decoder is known to fail when an attempt is made to reconfigure it with a + * new format's configuration data. + * + *

When enabled, the workaround will always release and recreate the decoder, rather than + * attempting to reconfigure the existing instance. + * + * @param name The name of the decoder. + * @return True if the decoder is known to fail when an attempt is made to reconfigure it with a + * new format's configuration data. + */ + private static boolean codecNeedsReconfigureWorkaround(String name) { + return Util.MODEL.startsWith("SM-T230") && "OMX.MARVELL.VIDEO.HW.CODA7542DECODER".equals(name); + } + + /** + * Returns whether the decoder is an H.264/AVC decoder known to fail if NAL units are queued + * before the codec specific data. + * + *

If true is returned, the renderer will work around the issue by discarding data up to the + * SPS. + * + * @param name The name of the decoder. + * @param format The {@link Format} used to configure the decoder. + * @return True if the decoder is known to fail if NAL units are queued before CSD. + */ + private static boolean codecNeedsDiscardToSpsWorkaround(String name, Format format) { + return Util.SDK_INT < 21 && format.initializationData.isEmpty() + && "OMX.MTK.VIDEO.DECODER.AVC".equals(name); + } + + /** + * Returns whether the decoder is known to handle the propagation of the {@link + * MediaCodec#BUFFER_FLAG_END_OF_STREAM} flag incorrectly on the host device. + * + *

If true is returned, the renderer will work around the issue by approximating end of stream + * behavior without relying on the flag being propagated through to an output buffer by the + * underlying decoder. + * + * @param codecInfo Information about the {@link MediaCodec}. + * @return True if the decoder is known to handle {@link MediaCodec#BUFFER_FLAG_END_OF_STREAM} + * propagation incorrectly on the host device. False otherwise. + */ + private static boolean codecNeedsEosPropagationWorkaround(MediaCodecInfo codecInfo) { + String name = codecInfo.name; + return (Util.SDK_INT <= 25 && "OMX.rk.video_decoder.avc".equals(name)) + || (Util.SDK_INT <= 17 && "OMX.allwinner.video.decoder.avc".equals(name)) + || ("Amazon".equals(Util.MANUFACTURER) && "AFTS".equals(Util.MODEL) && codecInfo.secure); + } + + /** + * Returns whether the decoder is known to behave incorrectly if flushed after receiving an input + * buffer with {@link MediaCodec#BUFFER_FLAG_END_OF_STREAM} set. + *

+ * If true is returned, the renderer will work around the issue by instantiating a new decoder + * when this case occurs. + *

+ * See [Internal: b/8578467, b/23361053]. + * + * @param name The name of the decoder. + * @return True if the decoder is known to behave incorrectly if flushed after receiving an input + * buffer with {@link MediaCodec#BUFFER_FLAG_END_OF_STREAM} set. False otherwise. + */ + private static boolean codecNeedsEosFlushWorkaround(String name) { + return (Util.SDK_INT <= 23 && "OMX.google.vorbis.decoder".equals(name)) + || (Util.SDK_INT <= 19 + && ("hb2000".equals(Util.DEVICE) || "stvm8".equals(Util.DEVICE)) + && ("OMX.amlogic.avc.decoder.awesome".equals(name) + || "OMX.amlogic.avc.decoder.awesome.secure".equals(name))); + } + + /** + * Returns whether the decoder may throw an {@link IllegalStateException} from + * {@link MediaCodec#dequeueOutputBuffer(MediaCodec.BufferInfo, long)} or + * {@link MediaCodec#releaseOutputBuffer(int, boolean)} after receiving an input + * buffer with {@link MediaCodec#BUFFER_FLAG_END_OF_STREAM} set. + *

+ * See [Internal: b/17933838]. + * + * @param name The name of the decoder. + * @return True if the decoder may throw an exception after receiving an end-of-stream buffer. + */ + private static boolean codecNeedsEosOutputExceptionWorkaround(String name) { + return Util.SDK_INT == 21 && "OMX.google.aac.decoder".equals(name); + } + + /** + * Returns whether the decoder is known to set the number of audio channels in the output {@link + * Format} to 2 for the given input {@link Format}, whilst only actually outputting a single + * channel. + * + *

If true is returned then we explicitly override the number of channels in the output {@link + * Format}, setting it to 1. + * + * @param name The decoder name. + * @param format The input {@link Format}. + * @return True if the decoder is known to set the number of audio channels in the output {@link + * Format} to 2 for the given input {@link Format}, whilst only actually outputting a single + * channel. False otherwise. + */ + private static boolean codecNeedsMonoChannelCountWorkaround(String name, Format format) { + return Util.SDK_INT <= 18 && format.channelCount == 1 + && "OMX.MTK.AUDIO.DECODER.MP3".equals(name); + } + + /** + * Returns whether the decoder is known to behave incorrectly if flushed prior to having output a + * {@link MediaFormat}. + * + *

If true is returned, the renderer will work around the issue by instantiating a new decoder + * when this case occurs. + * + *

See [Internal: b/141097367]. + * + * @param name The name of the decoder. + * @return True if the decoder is known to behave incorrectly if flushed prior to having output a + * {@link MediaFormat}. False otherwise. + */ + private static boolean codecNeedsSosFlushWorkaround(String name) { + return Util.SDK_INT == 29 && "c2.android.aac.decoder".equals(name); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecSelector.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecSelector.java new file mode 100644 index 0000000000..3f90c3a105 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecSelector.java @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec; + +import android.media.MediaCodec; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecUtil.DecoderQueryException; +import java.util.List; + +/** + * Selector of {@link MediaCodec} instances. + */ +public interface MediaCodecSelector { + + /** + * Default implementation of {@link MediaCodecSelector}, which returns the preferred decoder for + * the given format. + */ + MediaCodecSelector DEFAULT = + new MediaCodecSelector() { + @Override + public List getDecoderInfos( + String mimeType, boolean requiresSecureDecoder, boolean requiresTunnelingDecoder) + throws DecoderQueryException { + return MediaCodecUtil.getDecoderInfos( + mimeType, requiresSecureDecoder, requiresTunnelingDecoder); + } + + @Override + @Nullable + public MediaCodecInfo getPassthroughDecoderInfo() throws DecoderQueryException { + return MediaCodecUtil.getPassthroughDecoderInfo(); + } + }; + + /** + * Returns a list of decoders that can decode media in the specified MIME type, in priority order. + * + * @param mimeType The MIME type for which a decoder is required. + * @param requiresSecureDecoder Whether a secure decoder is required. + * @param requiresTunnelingDecoder Whether a tunneling decoder is required. + * @return An unmodifiable list of {@link MediaCodecInfo}s corresponding to decoders. May be + * empty. + * @throws DecoderQueryException Thrown if there was an error querying decoders. + */ + List getDecoderInfos( + String mimeType, boolean requiresSecureDecoder, boolean requiresTunnelingDecoder) + throws DecoderQueryException; + + /** + * Selects a decoder to instantiate for audio passthrough. + * + * @return A {@link MediaCodecInfo} describing the decoder, or null if no suitable decoder exists. + * @throws DecoderQueryException Thrown if there was an error querying decoders. + */ + @Nullable + MediaCodecInfo getPassthroughDecoderInfo() throws DecoderQueryException; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecUtil.java new file mode 100644 index 0000000000..11fe931305 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaCodecUtil.java @@ -0,0 +1,1232 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec; + +import android.annotation.SuppressLint; +import android.annotation.TargetApi; +import android.media.MediaCodecInfo.CodecCapabilities; +import android.media.MediaCodecInfo.CodecProfileLevel; +import android.media.MediaCodecList; +import android.text.TextUtils; +import android.util.Pair; +import android.util.SparseIntArray; +import androidx.annotation.CheckResult; +import androidx.annotation.Nullable; +import androidx.annotation.RequiresApi; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.ColorInfo; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import org.checkerframework.checker.nullness.qual.EnsuresNonNull; + +/** + * A utility class for querying the available codecs. + */ +@SuppressLint("InlinedApi") +public final class MediaCodecUtil { + + /** + * Thrown when an error occurs querying the device for its underlying media capabilities. + *

+ * Such failures are not expected in normal operation and are normally temporary (e.g. if the + * mediaserver process has crashed and is yet to restart). + */ + public static class DecoderQueryException extends Exception { + + private DecoderQueryException(Throwable cause) { + super("Failed to query underlying media codecs", cause); + } + + } + + private static final String TAG = "MediaCodecUtil"; + private static final Pattern PROFILE_PATTERN = Pattern.compile("^\\D?(\\d+)$"); + + private static final HashMap> decoderInfosCache = new HashMap<>(); + + // Codecs to constant mappings. + // AVC. + private static final SparseIntArray AVC_PROFILE_NUMBER_TO_CONST; + private static final SparseIntArray AVC_LEVEL_NUMBER_TO_CONST; + private static final String CODEC_ID_AVC1 = "avc1"; + private static final String CODEC_ID_AVC2 = "avc2"; + // VP9 + private static final SparseIntArray VP9_PROFILE_NUMBER_TO_CONST; + private static final SparseIntArray VP9_LEVEL_NUMBER_TO_CONST; + private static final String CODEC_ID_VP09 = "vp09"; + // HEVC. + private static final Map HEVC_CODEC_STRING_TO_PROFILE_LEVEL; + private static final String CODEC_ID_HEV1 = "hev1"; + private static final String CODEC_ID_HVC1 = "hvc1"; + // Dolby Vision. + private static final Map DOLBY_VISION_STRING_TO_PROFILE; + private static final Map DOLBY_VISION_STRING_TO_LEVEL; + // AV1. + private static final SparseIntArray AV1_LEVEL_NUMBER_TO_CONST; + private static final String CODEC_ID_AV01 = "av01"; + // MP4A AAC. + private static final SparseIntArray MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE; + private static final String CODEC_ID_MP4A = "mp4a"; + + // Lazily initialized. + private static int maxH264DecodableFrameSize = -1; + + private MediaCodecUtil() {} + + /** + * Optional call to warm the codec cache for a given mime type. + * + *

Calling this method may speed up subsequent calls to {@link #getDecoderInfo(String, boolean, + * boolean)} and {@link #getDecoderInfos(String, boolean, boolean)}. + * + * @param mimeType The mime type. + * @param secure Whether the decoder is required to support secure decryption. Always pass false + * unless secure decryption really is required. + * @param tunneling Whether the decoder is required to support tunneling. Always pass false unless + * tunneling really is required. + */ + public static void warmDecoderInfoCache(String mimeType, boolean secure, boolean tunneling) { + try { + getDecoderInfos(mimeType, secure, tunneling); + } catch (DecoderQueryException e) { + // Codec warming is best effort, so we can swallow the exception. + Log.e(TAG, "Codec warming failed", e); + } + } + + /** + * Returns information about a decoder suitable for audio passthrough. + * + * @return A {@link MediaCodecInfo} describing the decoder, or null if no suitable decoder exists. + * @throws DecoderQueryException If there was an error querying the available decoders. + */ + @Nullable + public static MediaCodecInfo getPassthroughDecoderInfo() throws DecoderQueryException { + @Nullable + MediaCodecInfo decoderInfo = + getDecoderInfo(MimeTypes.AUDIO_RAW, /* secure= */ false, /* tunneling= */ false); + return decoderInfo == null ? null : MediaCodecInfo.newPassthroughInstance(decoderInfo.name); + } + + /** + * Returns information about the preferred decoder for a given mime type. + * + * @param mimeType The MIME type. + * @param secure Whether the decoder is required to support secure decryption. Always pass false + * unless secure decryption really is required. + * @param tunneling Whether the decoder is required to support tunneling. Always pass false unless + * tunneling really is required. + * @return A {@link MediaCodecInfo} describing the decoder, or null if no suitable decoder exists. + * @throws DecoderQueryException If there was an error querying the available decoders. + */ + @Nullable + public static MediaCodecInfo getDecoderInfo(String mimeType, boolean secure, boolean tunneling) + throws DecoderQueryException { + List decoderInfos = getDecoderInfos(mimeType, secure, tunneling); + return decoderInfos.isEmpty() ? null : decoderInfos.get(0); + } + + /** + * Returns all {@link MediaCodecInfo}s for the given mime type, in the order given by {@link + * MediaCodecList}. + * + * @param mimeType The MIME type. + * @param secure Whether the decoder is required to support secure decryption. Always pass false + * unless secure decryption really is required. + * @param tunneling Whether the decoder is required to support tunneling. Always pass false unless + * tunneling really is required. + * @return An unmodifiable list of all {@link MediaCodecInfo}s for the given mime type, in the + * order given by {@link MediaCodecList}. + * @throws DecoderQueryException If there was an error querying the available decoders. + */ + public static synchronized List getDecoderInfos( + String mimeType, boolean secure, boolean tunneling) throws DecoderQueryException { + CodecKey key = new CodecKey(mimeType, secure, tunneling); + @Nullable List cachedDecoderInfos = decoderInfosCache.get(key); + if (cachedDecoderInfos != null) { + return cachedDecoderInfos; + } + MediaCodecListCompat mediaCodecList = + Util.SDK_INT >= 21 + ? new MediaCodecListCompatV21(secure, tunneling) + : new MediaCodecListCompatV16(); + ArrayList decoderInfos = getDecoderInfosInternal(key, mediaCodecList); + if (secure && decoderInfos.isEmpty() && 21 <= Util.SDK_INT && Util.SDK_INT <= 23) { + // Some devices don't list secure decoders on API level 21 [Internal: b/18678462]. Try the + // legacy path. We also try this path on API levels 22 and 23 as a defensive measure. + mediaCodecList = new MediaCodecListCompatV16(); + decoderInfos = getDecoderInfosInternal(key, mediaCodecList); + if (!decoderInfos.isEmpty()) { + Log.w(TAG, "MediaCodecList API didn't list secure decoder for: " + mimeType + + ". Assuming: " + decoderInfos.get(0).name); + } + } + applyWorkarounds(mimeType, decoderInfos); + List unmodifiableDecoderInfos = Collections.unmodifiableList(decoderInfos); + decoderInfosCache.put(key, unmodifiableDecoderInfos); + return unmodifiableDecoderInfos; + } + + /** + * Returns a copy of the provided decoder list sorted such that decoders with format support are + * listed first. The returned list is modifiable for convenience. + */ + @CheckResult + public static List getDecoderInfosSortedByFormatSupport( + List decoderInfos, Format format) { + decoderInfos = new ArrayList<>(decoderInfos); + sortByScore( + decoderInfos, + decoderInfo -> { + try { + return decoderInfo.isFormatSupported(format) ? 1 : 0; + } catch (DecoderQueryException e) { + return -1; + } + }); + return decoderInfos; + } + + /** + * Returns the maximum frame size supported by the default H264 decoder. + * + * @return The maximum frame size for an H264 stream that can be decoded on the device. + */ + public static int maxH264DecodableFrameSize() throws DecoderQueryException { + if (maxH264DecodableFrameSize == -1) { + int result = 0; + @Nullable + MediaCodecInfo decoderInfo = + getDecoderInfo(MimeTypes.VIDEO_H264, /* secure= */ false, /* tunneling= */ false); + if (decoderInfo != null) { + for (CodecProfileLevel profileLevel : decoderInfo.getProfileLevels()) { + result = Math.max(avcLevelToMaxFrameSize(profileLevel.level), result); + } + // We assume support for at least 480p (SDK_INT >= 21) or 360p (SDK_INT < 21), which are + // the levels mandated by the Android CDD. + result = Math.max(result, Util.SDK_INT >= 21 ? (720 * 480) : (480 * 360)); + } + maxH264DecodableFrameSize = result; + } + return maxH264DecodableFrameSize; + } + + /** + * Returns profile and level (as defined by {@link CodecProfileLevel}) corresponding to the codec + * description string (as defined by RFC 6381) of the given format. + * + * @param format Media format with a codec description string, as defined by RFC 6381. + * @return A pair (profile constant, level constant) if the codec of the {@code format} is + * well-formed and recognized, or null otherwise. + */ + @Nullable + public static Pair getCodecProfileAndLevel(Format format) { + if (format.codecs == null) { + return null; + } + String[] parts = format.codecs.split("\\."); + // Dolby Vision can use DV, AVC or HEVC codec IDs, so check the MIME type first. + if (MimeTypes.VIDEO_DOLBY_VISION.equals(format.sampleMimeType)) { + return getDolbyVisionProfileAndLevel(format.codecs, parts); + } + switch (parts[0]) { + case CODEC_ID_AVC1: + case CODEC_ID_AVC2: + return getAvcProfileAndLevel(format.codecs, parts); + case CODEC_ID_VP09: + return getVp9ProfileAndLevel(format.codecs, parts); + case CODEC_ID_HEV1: + case CODEC_ID_HVC1: + return getHevcProfileAndLevel(format.codecs, parts); + case CODEC_ID_AV01: + return getAv1ProfileAndLevel(format.codecs, parts, format.colorInfo); + case CODEC_ID_MP4A: + return getAacCodecProfileAndLevel(format.codecs, parts); + default: + return null; + } + } + + // Internal methods. + + /** + * Returns {@link MediaCodecInfo}s for the given codec {@link CodecKey} in the order given by + * {@code mediaCodecList}. + * + * @param key The codec key. + * @param mediaCodecList The codec list. + * @return The codec information for usable codecs matching the specified key. + * @throws DecoderQueryException If there was an error querying the available decoders. + */ + private static ArrayList getDecoderInfosInternal( + CodecKey key, MediaCodecListCompat mediaCodecList) throws DecoderQueryException { + try { + ArrayList decoderInfos = new ArrayList<>(); + String mimeType = key.mimeType; + int numberOfCodecs = mediaCodecList.getCodecCount(); + boolean secureDecodersExplicit = mediaCodecList.secureDecodersExplicit(); + // Note: MediaCodecList is sorted by the framework such that the best decoders come first. + for (int i = 0; i < numberOfCodecs; i++) { + android.media.MediaCodecInfo codecInfo = mediaCodecList.getCodecInfoAt(i); + if (isAlias(codecInfo)) { + // Skip aliases of other codecs, since they will also be listed under their canonical + // names. + continue; + } + String name = codecInfo.getName(); + if (!isCodecUsableDecoder(codecInfo, name, secureDecodersExplicit, mimeType)) { + continue; + } + @Nullable String codecMimeType = getCodecMimeType(codecInfo, name, mimeType); + if (codecMimeType == null) { + continue; + } + try { + CodecCapabilities capabilities = codecInfo.getCapabilitiesForType(codecMimeType); + boolean tunnelingSupported = + mediaCodecList.isFeatureSupported( + CodecCapabilities.FEATURE_TunneledPlayback, codecMimeType, capabilities); + boolean tunnelingRequired = + mediaCodecList.isFeatureRequired( + CodecCapabilities.FEATURE_TunneledPlayback, codecMimeType, capabilities); + if ((!key.tunneling && tunnelingRequired) || (key.tunneling && !tunnelingSupported)) { + continue; + } + boolean secureSupported = + mediaCodecList.isFeatureSupported( + CodecCapabilities.FEATURE_SecurePlayback, codecMimeType, capabilities); + boolean secureRequired = + mediaCodecList.isFeatureRequired( + CodecCapabilities.FEATURE_SecurePlayback, codecMimeType, capabilities); + if ((!key.secure && secureRequired) || (key.secure && !secureSupported)) { + continue; + } + boolean hardwareAccelerated = isHardwareAccelerated(codecInfo); + boolean softwareOnly = isSoftwareOnly(codecInfo); + boolean vendor = isVendor(codecInfo); + boolean forceDisableAdaptive = codecNeedsDisableAdaptationWorkaround(name); + if ((secureDecodersExplicit && key.secure == secureSupported) + || (!secureDecodersExplicit && !key.secure)) { + decoderInfos.add( + MediaCodecInfo.newInstance( + name, + mimeType, + codecMimeType, + capabilities, + hardwareAccelerated, + softwareOnly, + vendor, + forceDisableAdaptive, + /* forceSecure= */ false)); + } else if (!secureDecodersExplicit && secureSupported) { + decoderInfos.add( + MediaCodecInfo.newInstance( + name + ".secure", + mimeType, + codecMimeType, + capabilities, + hardwareAccelerated, + softwareOnly, + vendor, + forceDisableAdaptive, + /* forceSecure= */ true)); + // It only makes sense to have one synthesized secure decoder, return immediately. + return decoderInfos; + } + } catch (Exception e) { + if (Util.SDK_INT <= 23 && !decoderInfos.isEmpty()) { + // Suppress error querying secondary codec capabilities up to API level 23. + Log.e(TAG, "Skipping codec " + name + " (failed to query capabilities)"); + } else { + // Rethrow error querying primary codec capabilities, or secondary codec + // capabilities if API level is greater than 23. + Log.e(TAG, "Failed to query codec " + name + " (" + codecMimeType + ")"); + throw e; + } + } + } + return decoderInfos; + } catch (Exception e) { + // If the underlying mediaserver is in a bad state, we may catch an IllegalStateException + // or an IllegalArgumentException here. + throw new DecoderQueryException(e); + } + } + + /** + * Returns the codec's supported MIME type for media of type {@code mimeType}, or {@code null} if + * the codec can't be used. + * + * @param info The codec information. + * @param name The name of the codec + * @param mimeType The MIME type. + * @return The codec's supported MIME type for media of type {@code mimeType}, or {@code null} if + * the codec can't be used. If non-null, the returned type will be equal to {@code mimeType} + * except in cases where the codec is known to use a non-standard MIME type alias. + */ + @Nullable + private static String getCodecMimeType( + android.media.MediaCodecInfo info, + String name, + String mimeType) { + String[] supportedTypes = info.getSupportedTypes(); + for (String supportedType : supportedTypes) { + if (supportedType.equalsIgnoreCase(mimeType)) { + return supportedType; + } + } + + if (mimeType.equals(MimeTypes.VIDEO_DOLBY_VISION)) { + // Handle decoders that declare support for DV via MIME types that aren't + // video/dolby-vision. + if ("OMX.MS.HEVCDV.Decoder".equals(name)) { + return "video/hevcdv"; + } else if ("OMX.RTK.video.decoder".equals(name) + || "OMX.realtek.video.decoder.tunneled".equals(name)) { + return "video/dv_hevc"; + } + } else if (mimeType.equals(MimeTypes.AUDIO_ALAC) && "OMX.lge.alac.decoder".equals(name)) { + return "audio/x-lg-alac"; + } else if (mimeType.equals(MimeTypes.AUDIO_FLAC) && "OMX.lge.flac.decoder".equals(name)) { + return "audio/x-lg-flac"; + } + + return null; + } + + /** + * Returns whether the specified codec is usable for decoding on the current device. + * + * @param info The codec information. + * @param name The name of the codec + * @param secureDecodersExplicit Whether secure decoders were explicitly listed, if present. + * @param mimeType The MIME type. + * @return Whether the specified codec is usable for decoding on the current device. + */ + private static boolean isCodecUsableDecoder( + android.media.MediaCodecInfo info, + String name, + boolean secureDecodersExplicit, + String mimeType) { + if (info.isEncoder() || (!secureDecodersExplicit && name.endsWith(".secure"))) { + return false; + } + + // Work around broken audio decoders. + if (Util.SDK_INT < 21 + && ("CIPAACDecoder".equals(name) + || "CIPMP3Decoder".equals(name) + || "CIPVorbisDecoder".equals(name) + || "CIPAMRNBDecoder".equals(name) + || "AACDecoder".equals(name) + || "MP3Decoder".equals(name))) { + return false; + } + + // Work around https://github.com/google/ExoPlayer/issues/1528 and + // https://github.com/google/ExoPlayer/issues/3171. + if (Util.SDK_INT < 18 + && "OMX.MTK.AUDIO.DECODER.AAC".equals(name) + && ("a70".equals(Util.DEVICE) + || ("Xiaomi".equals(Util.MANUFACTURER) && Util.DEVICE.startsWith("HM")))) { + return false; + } + + // Work around an issue where querying/creating a particular MP3 decoder on some devices on + // platform API version 16 fails. + if (Util.SDK_INT == 16 + && "OMX.qcom.audio.decoder.mp3".equals(name) + && ("dlxu".equals(Util.DEVICE) // HTC Butterfly + || "protou".equals(Util.DEVICE) // HTC Desire X + || "ville".equals(Util.DEVICE) // HTC One S + || "villeplus".equals(Util.DEVICE) + || "villec2".equals(Util.DEVICE) + || Util.DEVICE.startsWith("gee") // LGE Optimus G + || "C6602".equals(Util.DEVICE) // Sony Xperia Z + || "C6603".equals(Util.DEVICE) + || "C6606".equals(Util.DEVICE) + || "C6616".equals(Util.DEVICE) + || "L36h".equals(Util.DEVICE) + || "SO-02E".equals(Util.DEVICE))) { + return false; + } + + // Work around an issue where large timestamps are not propagated correctly. + if (Util.SDK_INT == 16 + && "OMX.qcom.audio.decoder.aac".equals(name) + && ("C1504".equals(Util.DEVICE) // Sony Xperia E + || "C1505".equals(Util.DEVICE) + || "C1604".equals(Util.DEVICE) // Sony Xperia E dual + || "C1605".equals(Util.DEVICE))) { + return false; + } + + // Work around https://github.com/google/ExoPlayer/issues/3249. + if (Util.SDK_INT < 24 + && ("OMX.SEC.aac.dec".equals(name) || "OMX.Exynos.AAC.Decoder".equals(name)) + && "samsung".equals(Util.MANUFACTURER) + && (Util.DEVICE.startsWith("zeroflte") // Galaxy S6 + || Util.DEVICE.startsWith("zerolte") // Galaxy S6 Edge + || Util.DEVICE.startsWith("zenlte") // Galaxy S6 Edge+ + || "SC-05G".equals(Util.DEVICE) // Galaxy S6 + || "marinelteatt".equals(Util.DEVICE) // Galaxy S6 Active + || "404SC".equals(Util.DEVICE) // Galaxy S6 Edge + || "SC-04G".equals(Util.DEVICE) + || "SCV31".equals(Util.DEVICE))) { + return false; + } + + // Work around https://github.com/google/ExoPlayer/issues/548. + // VP8 decoder on Samsung Galaxy S3/S4/S4 Mini/Tab 3/Note 2 does not render video. + if (Util.SDK_INT <= 19 + && "OMX.SEC.vp8.dec".equals(name) + && "samsung".equals(Util.MANUFACTURER) + && (Util.DEVICE.startsWith("d2") + || Util.DEVICE.startsWith("serrano") + || Util.DEVICE.startsWith("jflte") + || Util.DEVICE.startsWith("santos") + || Util.DEVICE.startsWith("t0"))) { + return false; + } + + // VP8 decoder on Samsung Galaxy S4 cannot be queried. + if (Util.SDK_INT <= 19 && Util.DEVICE.startsWith("jflte") + && "OMX.qcom.video.decoder.vp8".equals(name)) { + return false; + } + + // MTK E-AC3 decoder doesn't support decoding JOC streams in 2-D. See [Internal: b/69400041]. + if (MimeTypes.AUDIO_E_AC3_JOC.equals(mimeType) && "OMX.MTK.AUDIO.DECODER.DSPAC3".equals(name)) { + return false; + } + + return true; + } + + /** + * Modifies a list of {@link MediaCodecInfo}s to apply workarounds where we know better than the + * platform. + * + * @param mimeType The MIME type of input media. + * @param decoderInfos The list to modify. + */ + private static void applyWorkarounds(String mimeType, List decoderInfos) { + if (MimeTypes.AUDIO_RAW.equals(mimeType)) { + if (Util.SDK_INT < 26 + && Util.DEVICE.equals("R9") + && decoderInfos.size() == 1 + && decoderInfos.get(0).name.equals("OMX.MTK.AUDIO.DECODER.RAW")) { + // This device does not list a generic raw audio decoder, yet it can be instantiated by + // name. See Issue #5782. + decoderInfos.add( + MediaCodecInfo.newInstance( + /* name= */ "OMX.google.raw.decoder", + /* mimeType= */ MimeTypes.AUDIO_RAW, + /* codecMimeType= */ MimeTypes.AUDIO_RAW, + /* capabilities= */ null, + /* hardwareAccelerated= */ false, + /* softwareOnly= */ true, + /* vendor= */ false, + /* forceDisableAdaptive= */ false, + /* forceSecure= */ false)); + } + // Work around inconsistent raw audio decoding behavior across different devices. + sortByScore( + decoderInfos, + decoderInfo -> { + String name = decoderInfo.name; + if (name.startsWith("OMX.google") || name.startsWith("c2.android")) { + // Prefer generic decoders over ones provided by the device. + return 1; + } + if (Util.SDK_INT < 26 && name.equals("OMX.MTK.AUDIO.DECODER.RAW")) { + // This decoder may modify the audio, so any other compatible decoders take + // precedence. See [Internal: b/62337687]. + return -1; + } + return 0; + }); + } + + if (Util.SDK_INT < 21 && decoderInfos.size() > 1) { + String firstCodecName = decoderInfos.get(0).name; + if ("OMX.SEC.mp3.dec".equals(firstCodecName) + || "OMX.SEC.MP3.Decoder".equals(firstCodecName) + || "OMX.brcm.audio.mp3.decoder".equals(firstCodecName)) { + // Prefer OMX.google codecs over OMX.SEC.mp3.dec, OMX.SEC.MP3.Decoder and + // OMX.brcm.audio.mp3.decoder on older devices. See: + // https://github.com/google/ExoPlayer/issues/398 and + // https://github.com/google/ExoPlayer/issues/4519. + sortByScore(decoderInfos, decoderInfo -> decoderInfo.name.startsWith("OMX.google") ? 1 : 0); + } + } + + if (Util.SDK_INT < 30 && decoderInfos.size() > 1) { + String firstCodecName = decoderInfos.get(0).name; + // Prefer anything other than OMX.qti.audio.decoder.flac on older devices. See [Internal + // ref: b/147278539] and [Internal ref: b/147354613]. + if ("OMX.qti.audio.decoder.flac".equals(firstCodecName)) { + decoderInfos.add(decoderInfos.remove(0)); + } + } + } + + private static boolean isAlias(android.media.MediaCodecInfo info) { + return Util.SDK_INT >= 29 && isAliasV29(info); + } + + @RequiresApi(29) + private static boolean isAliasV29(android.media.MediaCodecInfo info) { + return info.isAlias(); + } + + /** + * The result of {@link android.media.MediaCodecInfo#isHardwareAccelerated()} for API levels 29+, + * or a best-effort approximation for lower levels. + */ + private static boolean isHardwareAccelerated(android.media.MediaCodecInfo codecInfo) { + if (Util.SDK_INT >= 29) { + return isHardwareAcceleratedV29(codecInfo); + } + // codecInfo.isHardwareAccelerated() != codecInfo.isSoftwareOnly() is not necessarily true. + // However, we assume this to be true as an approximation. + return !isSoftwareOnly(codecInfo); + } + + @TargetApi(29) + private static boolean isHardwareAcceleratedV29(android.media.MediaCodecInfo codecInfo) { + return codecInfo.isHardwareAccelerated(); + } + + /** + * The result of {@link android.media.MediaCodecInfo#isSoftwareOnly()} for API levels 29+, or a + * best-effort approximation for lower levels. + */ + private static boolean isSoftwareOnly(android.media.MediaCodecInfo codecInfo) { + if (Util.SDK_INT >= 29) { + return isSoftwareOnlyV29(codecInfo); + } + String codecName = Util.toLowerInvariant(codecInfo.getName()); + if (codecName.startsWith("arc.")) { // App Runtime for Chrome (ARC) codecs + return false; + } + return codecName.startsWith("omx.google.") + || codecName.startsWith("omx.ffmpeg.") + || (codecName.startsWith("omx.sec.") && codecName.contains(".sw.")) + || codecName.equals("omx.qcom.video.decoder.hevcswvdec") + || codecName.startsWith("c2.android.") + || codecName.startsWith("c2.google.") + || (!codecName.startsWith("omx.") && !codecName.startsWith("c2.")); + } + + @TargetApi(29) + private static boolean isSoftwareOnlyV29(android.media.MediaCodecInfo codecInfo) { + return codecInfo.isSoftwareOnly(); + } + + /** + * The result of {@link android.media.MediaCodecInfo#isVendor()} for API levels 29+, or a + * best-effort approximation for lower levels. + */ + private static boolean isVendor(android.media.MediaCodecInfo codecInfo) { + if (Util.SDK_INT >= 29) { + return isVendorV29(codecInfo); + } + String codecName = Util.toLowerInvariant(codecInfo.getName()); + return !codecName.startsWith("omx.google.") + && !codecName.startsWith("c2.android.") + && !codecName.startsWith("c2.google."); + } + + @TargetApi(29) + private static boolean isVendorV29(android.media.MediaCodecInfo codecInfo) { + return codecInfo.isVendor(); + } + + /** + * Returns whether the decoder is known to fail when adapting, despite advertising itself as an + * adaptive decoder. + * + * @param name The decoder name. + * @return True if the decoder is known to fail when adapting. + */ + private static boolean codecNeedsDisableAdaptationWorkaround(String name) { + return Util.SDK_INT <= 22 + && ("ODROID-XU3".equals(Util.MODEL) || "Nexus 10".equals(Util.MODEL)) + && ("OMX.Exynos.AVC.Decoder".equals(name) || "OMX.Exynos.AVC.Decoder.secure".equals(name)); + } + + @Nullable + private static Pair getDolbyVisionProfileAndLevel( + String codec, String[] parts) { + if (parts.length < 3) { + // The codec has fewer parts than required by the Dolby Vision codec string format. + Log.w(TAG, "Ignoring malformed Dolby Vision codec string: " + codec); + return null; + } + // The profile_space gets ignored. + Matcher matcher = PROFILE_PATTERN.matcher(parts[1]); + if (!matcher.matches()) { + Log.w(TAG, "Ignoring malformed Dolby Vision codec string: " + codec); + return null; + } + @Nullable String profileString = matcher.group(1); + @Nullable Integer profile = DOLBY_VISION_STRING_TO_PROFILE.get(profileString); + if (profile == null) { + Log.w(TAG, "Unknown Dolby Vision profile string: " + profileString); + return null; + } + String levelString = parts[2]; + @Nullable Integer level = DOLBY_VISION_STRING_TO_LEVEL.get(levelString); + if (level == null) { + Log.w(TAG, "Unknown Dolby Vision level string: " + levelString); + return null; + } + return new Pair<>(profile, level); + } + + @Nullable + private static Pair getHevcProfileAndLevel(String codec, String[] parts) { + if (parts.length < 4) { + // The codec has fewer parts than required by the HEVC codec string format. + Log.w(TAG, "Ignoring malformed HEVC codec string: " + codec); + return null; + } + // The profile_space gets ignored. + Matcher matcher = PROFILE_PATTERN.matcher(parts[1]); + if (!matcher.matches()) { + Log.w(TAG, "Ignoring malformed HEVC codec string: " + codec); + return null; + } + @Nullable String profileString = matcher.group(1); + int profile; + if ("1".equals(profileString)) { + profile = CodecProfileLevel.HEVCProfileMain; + } else if ("2".equals(profileString)) { + profile = CodecProfileLevel.HEVCProfileMain10; + } else { + Log.w(TAG, "Unknown HEVC profile string: " + profileString); + return null; + } + @Nullable String levelString = parts[3]; + @Nullable Integer level = HEVC_CODEC_STRING_TO_PROFILE_LEVEL.get(levelString); + if (level == null) { + Log.w(TAG, "Unknown HEVC level string: " + levelString); + return null; + } + return new Pair<>(profile, level); + } + + @Nullable + private static Pair getAvcProfileAndLevel(String codec, String[] parts) { + if (parts.length < 2) { + // The codec has fewer parts than required by the AVC codec string format. + Log.w(TAG, "Ignoring malformed AVC codec string: " + codec); + return null; + } + int profileInteger; + int levelInteger; + try { + if (parts[1].length() == 6) { + // Format: avc1.xxccyy, where xx is profile and yy level, both hexadecimal. + profileInteger = Integer.parseInt(parts[1].substring(0, 2), 16); + levelInteger = Integer.parseInt(parts[1].substring(4), 16); + } else if (parts.length >= 3) { + // Format: avc1.xx.[y]yy where xx is profile and [y]yy level, both decimal. + profileInteger = Integer.parseInt(parts[1]); + levelInteger = Integer.parseInt(parts[2]); + } else { + // We don't recognize the format. + Log.w(TAG, "Ignoring malformed AVC codec string: " + codec); + return null; + } + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring malformed AVC codec string: " + codec); + return null; + } + + int profile = AVC_PROFILE_NUMBER_TO_CONST.get(profileInteger, -1); + if (profile == -1) { + Log.w(TAG, "Unknown AVC profile: " + profileInteger); + return null; + } + int level = AVC_LEVEL_NUMBER_TO_CONST.get(levelInteger, -1); + if (level == -1) { + Log.w(TAG, "Unknown AVC level: " + levelInteger); + return null; + } + return new Pair<>(profile, level); + } + + @Nullable + private static Pair getVp9ProfileAndLevel(String codec, String[] parts) { + if (parts.length < 3) { + Log.w(TAG, "Ignoring malformed VP9 codec string: " + codec); + return null; + } + int profileInteger; + int levelInteger; + try { + profileInteger = Integer.parseInt(parts[1]); + levelInteger = Integer.parseInt(parts[2]); + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring malformed VP9 codec string: " + codec); + return null; + } + + int profile = VP9_PROFILE_NUMBER_TO_CONST.get(profileInteger, -1); + if (profile == -1) { + Log.w(TAG, "Unknown VP9 profile: " + profileInteger); + return null; + } + int level = VP9_LEVEL_NUMBER_TO_CONST.get(levelInteger, -1); + if (level == -1) { + Log.w(TAG, "Unknown VP9 level: " + levelInteger); + return null; + } + return new Pair<>(profile, level); + } + + @Nullable + private static Pair getAv1ProfileAndLevel( + String codec, String[] parts, @Nullable ColorInfo colorInfo) { + if (parts.length < 4) { + Log.w(TAG, "Ignoring malformed AV1 codec string: " + codec); + return null; + } + int profileInteger; + int levelInteger; + int bitDepthInteger; + try { + profileInteger = Integer.parseInt(parts[1]); + levelInteger = Integer.parseInt(parts[2].substring(0, 2)); + bitDepthInteger = Integer.parseInt(parts[3]); + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring malformed AV1 codec string: " + codec); + return null; + } + + if (profileInteger != 0) { + Log.w(TAG, "Unknown AV1 profile: " + profileInteger); + return null; + } + if (bitDepthInteger != 8 && bitDepthInteger != 10) { + Log.w(TAG, "Unknown AV1 bit depth: " + bitDepthInteger); + return null; + } + int profile; + if (bitDepthInteger == 8) { + profile = CodecProfileLevel.AV1ProfileMain8; + } else if (colorInfo != null + && (colorInfo.hdrStaticInfo != null + || colorInfo.colorTransfer == C.COLOR_TRANSFER_HLG + || colorInfo.colorTransfer == C.COLOR_TRANSFER_ST2084)) { + profile = CodecProfileLevel.AV1ProfileMain10HDR10; + } else { + profile = CodecProfileLevel.AV1ProfileMain10; + } + + int level = AV1_LEVEL_NUMBER_TO_CONST.get(levelInteger, -1); + if (level == -1) { + Log.w(TAG, "Unknown AV1 level: " + levelInteger); + return null; + } + return new Pair<>(profile, level); + } + + /** + * Conversion values taken from ISO 14496-10 Table A-1. + * + * @param avcLevel one of CodecProfileLevel.AVCLevel* constants. + * @return maximum frame size that can be decoded by a decoder with the specified avc level + * (or {@code -1} if the level is not recognized) + */ + private static int avcLevelToMaxFrameSize(int avcLevel) { + switch (avcLevel) { + case CodecProfileLevel.AVCLevel1: + case CodecProfileLevel.AVCLevel1b: + return 99 * 16 * 16; + case CodecProfileLevel.AVCLevel12: + case CodecProfileLevel.AVCLevel13: + case CodecProfileLevel.AVCLevel2: + return 396 * 16 * 16; + case CodecProfileLevel.AVCLevel21: + return 792 * 16 * 16; + case CodecProfileLevel.AVCLevel22: + case CodecProfileLevel.AVCLevel3: + return 1620 * 16 * 16; + case CodecProfileLevel.AVCLevel31: + return 3600 * 16 * 16; + case CodecProfileLevel.AVCLevel32: + return 5120 * 16 * 16; + case CodecProfileLevel.AVCLevel4: + case CodecProfileLevel.AVCLevel41: + return 8192 * 16 * 16; + case CodecProfileLevel.AVCLevel42: + return 8704 * 16 * 16; + case CodecProfileLevel.AVCLevel5: + return 22080 * 16 * 16; + case CodecProfileLevel.AVCLevel51: + case CodecProfileLevel.AVCLevel52: + return 36864 * 16 * 16; + default: + return -1; + } + } + + @Nullable + private static Pair getAacCodecProfileAndLevel(String codec, String[] parts) { + if (parts.length != 3) { + Log.w(TAG, "Ignoring malformed MP4A codec string: " + codec); + return null; + } + try { + // Get the object type indication, which is a hexadecimal value (see RFC 6381/ISO 14496-1). + int objectTypeIndication = Integer.parseInt(parts[1], 16); + @Nullable String mimeType = MimeTypes.getMimeTypeFromMp4ObjectType(objectTypeIndication); + if (MimeTypes.AUDIO_AAC.equals(mimeType)) { + // For MPEG-4 audio this is followed by an audio object type indication as a decimal number. + int audioObjectTypeIndication = Integer.parseInt(parts[2]); + int profile = MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.get(audioObjectTypeIndication, -1); + if (profile != -1) { + // Level is set to zero in AAC decoder CodecProfileLevels. + return new Pair<>(profile, 0); + } + } + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring malformed MP4A codec string: " + codec); + } + return null; + } + + /** Stably sorts the provided {@code list} in-place, in order of decreasing score. */ + private static void sortByScore(List list, ScoreProvider scoreProvider) { + Collections.sort(list, (a, b) -> scoreProvider.getScore(b) - scoreProvider.getScore(a)); + } + + /** Interface for providers of item scores. */ + private interface ScoreProvider { + /** Returns the score of the provided item. */ + int getScore(T t); + } + + private interface MediaCodecListCompat { + + /** + * The number of codecs in the list. + */ + int getCodecCount(); + + /** + * The info at the specified index in the list. + * + * @param index The index. + */ + android.media.MediaCodecInfo getCodecInfoAt(int index); + + /** + * Returns whether secure decoders are explicitly listed, if present. + */ + boolean secureDecodersExplicit(); + + /** Whether the specified {@link CodecCapabilities} {@code feature} is supported. */ + boolean isFeatureSupported(String feature, String mimeType, CodecCapabilities capabilities); + + /** Whether the specified {@link CodecCapabilities} {@code feature} is required. */ + boolean isFeatureRequired(String feature, String mimeType, CodecCapabilities capabilities); + } + + @TargetApi(21) + private static final class MediaCodecListCompatV21 implements MediaCodecListCompat { + + private final int codecKind; + + @Nullable private android.media.MediaCodecInfo[] mediaCodecInfos; + + // the constructor does not initialize fields: mediaCodecInfos + @SuppressWarnings("nullness:initialization.fields.uninitialized") + public MediaCodecListCompatV21(boolean includeSecure, boolean includeTunneling) { + codecKind = + includeSecure || includeTunneling + ? MediaCodecList.ALL_CODECS + : MediaCodecList.REGULAR_CODECS; + } + + @Override + public int getCodecCount() { + ensureMediaCodecInfosInitialized(); + return mediaCodecInfos.length; + } + + // incompatible types in return. + @SuppressWarnings("nullness:return.type.incompatible") + @Override + public android.media.MediaCodecInfo getCodecInfoAt(int index) { + ensureMediaCodecInfosInitialized(); + return mediaCodecInfos[index]; + } + + @Override + public boolean secureDecodersExplicit() { + return true; + } + + @Override + public boolean isFeatureSupported( + String feature, String mimeType, CodecCapabilities capabilities) { + return capabilities.isFeatureSupported(feature); + } + + @Override + public boolean isFeatureRequired( + String feature, String mimeType, CodecCapabilities capabilities) { + return capabilities.isFeatureRequired(feature); + } + + @EnsuresNonNull({"mediaCodecInfos"}) + private void ensureMediaCodecInfosInitialized() { + if (mediaCodecInfos == null) { + mediaCodecInfos = new MediaCodecList(codecKind).getCodecInfos(); + } + } + + } + + private static final class MediaCodecListCompatV16 implements MediaCodecListCompat { + + @Override + public int getCodecCount() { + return MediaCodecList.getCodecCount(); + } + + @Override + public android.media.MediaCodecInfo getCodecInfoAt(int index) { + return MediaCodecList.getCodecInfoAt(index); + } + + @Override + public boolean secureDecodersExplicit() { + return false; + } + + @Override + public boolean isFeatureSupported( + String feature, String mimeType, CodecCapabilities capabilities) { + // Secure decoders weren't explicitly listed prior to API level 21. We assume that a secure + // H264 decoder exists. + return CodecCapabilities.FEATURE_SecurePlayback.equals(feature) + && MimeTypes.VIDEO_H264.equals(mimeType); + } + + @Override + public boolean isFeatureRequired( + String feature, String mimeType, CodecCapabilities capabilities) { + return false; + } + + } + + private static final class CodecKey { + + public final String mimeType; + public final boolean secure; + public final boolean tunneling; + + public CodecKey(String mimeType, boolean secure, boolean tunneling) { + this.mimeType = mimeType; + this.secure = secure; + this.tunneling = tunneling; + } + + @Override + public int hashCode() { + final int prime = 31; + int result = 1; + result = prime * result + mimeType.hashCode(); + result = prime * result + (secure ? 1231 : 1237); + result = prime * result + (tunneling ? 1231 : 1237); + return result; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || obj.getClass() != CodecKey.class) { + return false; + } + CodecKey other = (CodecKey) obj; + return TextUtils.equals(mimeType, other.mimeType) + && secure == other.secure + && tunneling == other.tunneling; + } + + } + + static { + AVC_PROFILE_NUMBER_TO_CONST = new SparseIntArray(); + AVC_PROFILE_NUMBER_TO_CONST.put(66, CodecProfileLevel.AVCProfileBaseline); + AVC_PROFILE_NUMBER_TO_CONST.put(77, CodecProfileLevel.AVCProfileMain); + AVC_PROFILE_NUMBER_TO_CONST.put(88, CodecProfileLevel.AVCProfileExtended); + AVC_PROFILE_NUMBER_TO_CONST.put(100, CodecProfileLevel.AVCProfileHigh); + AVC_PROFILE_NUMBER_TO_CONST.put(110, CodecProfileLevel.AVCProfileHigh10); + AVC_PROFILE_NUMBER_TO_CONST.put(122, CodecProfileLevel.AVCProfileHigh422); + AVC_PROFILE_NUMBER_TO_CONST.put(244, CodecProfileLevel.AVCProfileHigh444); + + AVC_LEVEL_NUMBER_TO_CONST = new SparseIntArray(); + AVC_LEVEL_NUMBER_TO_CONST.put(10, CodecProfileLevel.AVCLevel1); + // TODO: Find int for CodecProfileLevel.AVCLevel1b. + AVC_LEVEL_NUMBER_TO_CONST.put(11, CodecProfileLevel.AVCLevel11); + AVC_LEVEL_NUMBER_TO_CONST.put(12, CodecProfileLevel.AVCLevel12); + AVC_LEVEL_NUMBER_TO_CONST.put(13, CodecProfileLevel.AVCLevel13); + AVC_LEVEL_NUMBER_TO_CONST.put(20, CodecProfileLevel.AVCLevel2); + AVC_LEVEL_NUMBER_TO_CONST.put(21, CodecProfileLevel.AVCLevel21); + AVC_LEVEL_NUMBER_TO_CONST.put(22, CodecProfileLevel.AVCLevel22); + AVC_LEVEL_NUMBER_TO_CONST.put(30, CodecProfileLevel.AVCLevel3); + AVC_LEVEL_NUMBER_TO_CONST.put(31, CodecProfileLevel.AVCLevel31); + AVC_LEVEL_NUMBER_TO_CONST.put(32, CodecProfileLevel.AVCLevel32); + AVC_LEVEL_NUMBER_TO_CONST.put(40, CodecProfileLevel.AVCLevel4); + AVC_LEVEL_NUMBER_TO_CONST.put(41, CodecProfileLevel.AVCLevel41); + AVC_LEVEL_NUMBER_TO_CONST.put(42, CodecProfileLevel.AVCLevel42); + AVC_LEVEL_NUMBER_TO_CONST.put(50, CodecProfileLevel.AVCLevel5); + AVC_LEVEL_NUMBER_TO_CONST.put(51, CodecProfileLevel.AVCLevel51); + AVC_LEVEL_NUMBER_TO_CONST.put(52, CodecProfileLevel.AVCLevel52); + + VP9_PROFILE_NUMBER_TO_CONST = new SparseIntArray(); + VP9_PROFILE_NUMBER_TO_CONST.put(0, CodecProfileLevel.VP9Profile0); + VP9_PROFILE_NUMBER_TO_CONST.put(1, CodecProfileLevel.VP9Profile1); + VP9_PROFILE_NUMBER_TO_CONST.put(2, CodecProfileLevel.VP9Profile2); + VP9_PROFILE_NUMBER_TO_CONST.put(3, CodecProfileLevel.VP9Profile3); + VP9_LEVEL_NUMBER_TO_CONST = new SparseIntArray(); + VP9_LEVEL_NUMBER_TO_CONST.put(10, CodecProfileLevel.VP9Level1); + VP9_LEVEL_NUMBER_TO_CONST.put(11, CodecProfileLevel.VP9Level11); + VP9_LEVEL_NUMBER_TO_CONST.put(20, CodecProfileLevel.VP9Level2); + VP9_LEVEL_NUMBER_TO_CONST.put(21, CodecProfileLevel.VP9Level21); + VP9_LEVEL_NUMBER_TO_CONST.put(30, CodecProfileLevel.VP9Level3); + VP9_LEVEL_NUMBER_TO_CONST.put(31, CodecProfileLevel.VP9Level31); + VP9_LEVEL_NUMBER_TO_CONST.put(40, CodecProfileLevel.VP9Level4); + VP9_LEVEL_NUMBER_TO_CONST.put(41, CodecProfileLevel.VP9Level41); + VP9_LEVEL_NUMBER_TO_CONST.put(50, CodecProfileLevel.VP9Level5); + VP9_LEVEL_NUMBER_TO_CONST.put(51, CodecProfileLevel.VP9Level51); + VP9_LEVEL_NUMBER_TO_CONST.put(60, CodecProfileLevel.VP9Level6); + VP9_LEVEL_NUMBER_TO_CONST.put(61, CodecProfileLevel.VP9Level61); + VP9_LEVEL_NUMBER_TO_CONST.put(62, CodecProfileLevel.VP9Level62); + + HEVC_CODEC_STRING_TO_PROFILE_LEVEL = new HashMap<>(); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L30", CodecProfileLevel.HEVCMainTierLevel1); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L60", CodecProfileLevel.HEVCMainTierLevel2); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L63", CodecProfileLevel.HEVCMainTierLevel21); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L90", CodecProfileLevel.HEVCMainTierLevel3); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L93", CodecProfileLevel.HEVCMainTierLevel31); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L120", CodecProfileLevel.HEVCMainTierLevel4); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L123", CodecProfileLevel.HEVCMainTierLevel41); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L150", CodecProfileLevel.HEVCMainTierLevel5); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L153", CodecProfileLevel.HEVCMainTierLevel51); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L156", CodecProfileLevel.HEVCMainTierLevel52); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L180", CodecProfileLevel.HEVCMainTierLevel6); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L183", CodecProfileLevel.HEVCMainTierLevel61); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("L186", CodecProfileLevel.HEVCMainTierLevel62); + + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H30", CodecProfileLevel.HEVCHighTierLevel1); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H60", CodecProfileLevel.HEVCHighTierLevel2); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H63", CodecProfileLevel.HEVCHighTierLevel21); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H90", CodecProfileLevel.HEVCHighTierLevel3); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H93", CodecProfileLevel.HEVCHighTierLevel31); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H120", CodecProfileLevel.HEVCHighTierLevel4); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H123", CodecProfileLevel.HEVCHighTierLevel41); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H150", CodecProfileLevel.HEVCHighTierLevel5); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H153", CodecProfileLevel.HEVCHighTierLevel51); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H156", CodecProfileLevel.HEVCHighTierLevel52); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H180", CodecProfileLevel.HEVCHighTierLevel6); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H183", CodecProfileLevel.HEVCHighTierLevel61); + HEVC_CODEC_STRING_TO_PROFILE_LEVEL.put("H186", CodecProfileLevel.HEVCHighTierLevel62); + + DOLBY_VISION_STRING_TO_PROFILE = new HashMap<>(); + DOLBY_VISION_STRING_TO_PROFILE.put("00", CodecProfileLevel.DolbyVisionProfileDvavPer); + DOLBY_VISION_STRING_TO_PROFILE.put("01", CodecProfileLevel.DolbyVisionProfileDvavPen); + DOLBY_VISION_STRING_TO_PROFILE.put("02", CodecProfileLevel.DolbyVisionProfileDvheDer); + DOLBY_VISION_STRING_TO_PROFILE.put("03", CodecProfileLevel.DolbyVisionProfileDvheDen); + DOLBY_VISION_STRING_TO_PROFILE.put("04", CodecProfileLevel.DolbyVisionProfileDvheDtr); + DOLBY_VISION_STRING_TO_PROFILE.put("05", CodecProfileLevel.DolbyVisionProfileDvheStn); + DOLBY_VISION_STRING_TO_PROFILE.put("06", CodecProfileLevel.DolbyVisionProfileDvheDth); + DOLBY_VISION_STRING_TO_PROFILE.put("07", CodecProfileLevel.DolbyVisionProfileDvheDtb); + DOLBY_VISION_STRING_TO_PROFILE.put("08", CodecProfileLevel.DolbyVisionProfileDvheSt); + DOLBY_VISION_STRING_TO_PROFILE.put("09", CodecProfileLevel.DolbyVisionProfileDvavSe); + + DOLBY_VISION_STRING_TO_LEVEL = new HashMap<>(); + DOLBY_VISION_STRING_TO_LEVEL.put("01", CodecProfileLevel.DolbyVisionLevelHd24); + DOLBY_VISION_STRING_TO_LEVEL.put("02", CodecProfileLevel.DolbyVisionLevelHd30); + DOLBY_VISION_STRING_TO_LEVEL.put("03", CodecProfileLevel.DolbyVisionLevelFhd24); + DOLBY_VISION_STRING_TO_LEVEL.put("04", CodecProfileLevel.DolbyVisionLevelFhd30); + DOLBY_VISION_STRING_TO_LEVEL.put("05", CodecProfileLevel.DolbyVisionLevelFhd60); + DOLBY_VISION_STRING_TO_LEVEL.put("06", CodecProfileLevel.DolbyVisionLevelUhd24); + DOLBY_VISION_STRING_TO_LEVEL.put("07", CodecProfileLevel.DolbyVisionLevelUhd30); + DOLBY_VISION_STRING_TO_LEVEL.put("08", CodecProfileLevel.DolbyVisionLevelUhd48); + DOLBY_VISION_STRING_TO_LEVEL.put("09", CodecProfileLevel.DolbyVisionLevelUhd60); + + // See https://aomediacodec.github.io/av1-spec/av1-spec.pdf Annex A: Profiles and levels for + // more information on mapping AV1 codec strings to levels. + AV1_LEVEL_NUMBER_TO_CONST = new SparseIntArray(); + AV1_LEVEL_NUMBER_TO_CONST.put(0, CodecProfileLevel.AV1Level2); + AV1_LEVEL_NUMBER_TO_CONST.put(1, CodecProfileLevel.AV1Level21); + AV1_LEVEL_NUMBER_TO_CONST.put(2, CodecProfileLevel.AV1Level22); + AV1_LEVEL_NUMBER_TO_CONST.put(3, CodecProfileLevel.AV1Level23); + AV1_LEVEL_NUMBER_TO_CONST.put(4, CodecProfileLevel.AV1Level3); + AV1_LEVEL_NUMBER_TO_CONST.put(5, CodecProfileLevel.AV1Level31); + AV1_LEVEL_NUMBER_TO_CONST.put(6, CodecProfileLevel.AV1Level32); + AV1_LEVEL_NUMBER_TO_CONST.put(7, CodecProfileLevel.AV1Level33); + AV1_LEVEL_NUMBER_TO_CONST.put(8, CodecProfileLevel.AV1Level4); + AV1_LEVEL_NUMBER_TO_CONST.put(9, CodecProfileLevel.AV1Level41); + AV1_LEVEL_NUMBER_TO_CONST.put(10, CodecProfileLevel.AV1Level42); + AV1_LEVEL_NUMBER_TO_CONST.put(11, CodecProfileLevel.AV1Level43); + AV1_LEVEL_NUMBER_TO_CONST.put(12, CodecProfileLevel.AV1Level5); + AV1_LEVEL_NUMBER_TO_CONST.put(13, CodecProfileLevel.AV1Level51); + AV1_LEVEL_NUMBER_TO_CONST.put(14, CodecProfileLevel.AV1Level52); + AV1_LEVEL_NUMBER_TO_CONST.put(15, CodecProfileLevel.AV1Level53); + AV1_LEVEL_NUMBER_TO_CONST.put(16, CodecProfileLevel.AV1Level6); + AV1_LEVEL_NUMBER_TO_CONST.put(17, CodecProfileLevel.AV1Level61); + AV1_LEVEL_NUMBER_TO_CONST.put(18, CodecProfileLevel.AV1Level62); + AV1_LEVEL_NUMBER_TO_CONST.put(19, CodecProfileLevel.AV1Level63); + AV1_LEVEL_NUMBER_TO_CONST.put(20, CodecProfileLevel.AV1Level7); + AV1_LEVEL_NUMBER_TO_CONST.put(21, CodecProfileLevel.AV1Level71); + AV1_LEVEL_NUMBER_TO_CONST.put(22, CodecProfileLevel.AV1Level72); + AV1_LEVEL_NUMBER_TO_CONST.put(23, CodecProfileLevel.AV1Level73); + + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE = new SparseIntArray(); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(1, CodecProfileLevel.AACObjectMain); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(2, CodecProfileLevel.AACObjectLC); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(3, CodecProfileLevel.AACObjectSSR); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(4, CodecProfileLevel.AACObjectLTP); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(5, CodecProfileLevel.AACObjectHE); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(6, CodecProfileLevel.AACObjectScalable); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(17, CodecProfileLevel.AACObjectERLC); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(20, CodecProfileLevel.AACObjectERScalable); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(23, CodecProfileLevel.AACObjectLD); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(29, CodecProfileLevel.AACObjectHE_PS); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(39, CodecProfileLevel.AACObjectELD); + MP4A_AUDIO_OBJECT_TYPE_TO_PROFILE.put(42, CodecProfileLevel.AACObjectXHE); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaFormatUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaFormatUtil.java new file mode 100644 index 0000000000..cafaaa7c83 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/MediaFormatUtil.java @@ -0,0 +1,109 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec; + +import android.media.MediaFormat; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.ColorInfo; +import java.nio.ByteBuffer; +import java.util.List; + +/** Helper class for configuring {@link MediaFormat} instances. */ +public final class MediaFormatUtil { + + private MediaFormatUtil() {} + + /** + * Sets a {@link MediaFormat} {@link String} value. + * + * @param format The {@link MediaFormat} being configured. + * @param key The key to set. + * @param value The value to set. + */ + public static void setString(MediaFormat format, String key, String value) { + format.setString(key, value); + } + + /** + * Sets a {@link MediaFormat}'s codec specific data buffers. + * + * @param format The {@link MediaFormat} being configured. + * @param csdBuffers The csd buffers to set. + */ + public static void setCsdBuffers(MediaFormat format, List csdBuffers) { + for (int i = 0; i < csdBuffers.size(); i++) { + format.setByteBuffer("csd-" + i, ByteBuffer.wrap(csdBuffers.get(i))); + } + } + + /** + * Sets a {@link MediaFormat} integer value. Does nothing if {@code value} is {@link + * Format#NO_VALUE}. + * + * @param format The {@link MediaFormat} being configured. + * @param key The key to set. + * @param value The value to set. + */ + public static void maybeSetInteger(MediaFormat format, String key, int value) { + if (value != Format.NO_VALUE) { + format.setInteger(key, value); + } + } + + /** + * Sets a {@link MediaFormat} float value. Does nothing if {@code value} is {@link + * Format#NO_VALUE}. + * + * @param format The {@link MediaFormat} being configured. + * @param key The key to set. + * @param value The value to set. + */ + public static void maybeSetFloat(MediaFormat format, String key, float value) { + if (value != Format.NO_VALUE) { + format.setFloat(key, value); + } + } + + /** + * Sets a {@link MediaFormat} {@link ByteBuffer} value. Does nothing if {@code value} is null. + * + * @param format The {@link MediaFormat} being configured. + * @param key The key to set. + * @param value The {@link byte[]} that will be wrapped to obtain the value. + */ + public static void maybeSetByteBuffer(MediaFormat format, String key, @Nullable byte[] value) { + if (value != null) { + format.setByteBuffer(key, ByteBuffer.wrap(value)); + } + } + + /** + * Sets a {@link MediaFormat}'s color information. Does nothing if {@code colorInfo} is null. + * + * @param format The {@link MediaFormat} being configured. + * @param colorInfo The color info to set. + */ + @SuppressWarnings("InlinedApi") + public static void maybeSetColorInfo(MediaFormat format, @Nullable ColorInfo colorInfo) { + if (colorInfo != null) { + maybeSetInteger(format, MediaFormat.KEY_COLOR_TRANSFER, colorInfo.colorTransfer); + maybeSetInteger(format, MediaFormat.KEY_COLOR_STANDARD, colorInfo.colorSpace); + maybeSetInteger(format, MediaFormat.KEY_COLOR_RANGE, colorInfo.colorRange); + maybeSetByteBuffer(format, MediaFormat.KEY_HDR_STATIC_INFO, colorInfo.hdrStaticInfo); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/package-info.java new file mode 100644 index 0000000000..c8dd17d0df --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/mediacodec/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/Metadata.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/Metadata.java new file mode 100644 index 0000000000..16f01c4627 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/Metadata.java @@ -0,0 +1,171 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; +import java.util.List; + +/** + * A collection of metadata entries. + */ +public final class Metadata implements Parcelable { + + /** A metadata entry. */ + public interface Entry extends Parcelable { + + /** + * Returns the {@link Format} that can be used to decode the wrapped metadata in {@link + * #getWrappedMetadataBytes()}, or null if this Entry doesn't contain wrapped metadata. + */ + @Nullable + default Format getWrappedMetadataFormat() { + return null; + } + + /** + * Returns the bytes of the wrapped metadata in this Entry, or null if it doesn't contain + * wrapped metadata. + */ + @Nullable + default byte[] getWrappedMetadataBytes() { + return null; + } + } + + private final Entry[] entries; + + /** + * @param entries The metadata entries. + */ + public Metadata(Entry... entries) { + this.entries = entries; + } + + /** + * @param entries The metadata entries. + */ + public Metadata(List entries) { + this.entries = new Entry[entries.size()]; + entries.toArray(this.entries); + } + + /* package */ Metadata(Parcel in) { + entries = new Metadata.Entry[in.readInt()]; + for (int i = 0; i < entries.length; i++) { + entries[i] = in.readParcelable(Entry.class.getClassLoader()); + } + } + + /** + * Returns the number of metadata entries. + */ + public int length() { + return entries.length; + } + + /** + * Returns the entry at the specified index. + * + * @param index The index of the entry. + * @return The entry at the specified index. + */ + public Metadata.Entry get(int index) { + return entries[index]; + } + + /** + * Returns a copy of this metadata with the entries of the specified metadata appended. Returns + * this instance if {@code other} is null. + * + * @param other The metadata that holds the entries to append. If null, this methods returns this + * instance. + * @return The metadata instance with the appended entries. + */ + public Metadata copyWithAppendedEntriesFrom(@Nullable Metadata other) { + if (other == null) { + return this; + } + return copyWithAppendedEntries(other.entries); + } + + /** + * Returns a copy of this metadata with the specified entries appended. + * + * @param entriesToAppend The entries to append. + * @return The metadata instance with the appended entries. + */ + public Metadata copyWithAppendedEntries(Entry... entriesToAppend) { + if (entriesToAppend.length == 0) { + return this; + } + return new Metadata(Util.nullSafeArrayConcatenation(entries, entriesToAppend)); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + Metadata other = (Metadata) obj; + return Arrays.equals(entries, other.entries); + } + + @Override + public int hashCode() { + return Arrays.hashCode(entries); + } + + @Override + public String toString() { + return "entries=" + Arrays.toString(entries); + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeInt(entries.length); + for (Entry entry : entries) { + dest.writeParcelable(entry, 0); + } + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + @Override + public Metadata createFromParcel(Parcel in) { + return new Metadata(in); + } + + @Override + public Metadata[] newArray(int size) { + return new Metadata[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataDecoder.java new file mode 100644 index 0000000000..1bc1c7dc06 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataDecoder.java @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata; + +import androidx.annotation.Nullable; + +/** + * Decodes metadata from binary data. + */ +public interface MetadataDecoder { + + /** + * Decodes a {@link Metadata} element from the provided input buffer. + * + * @param inputBuffer The input buffer to decode. + * @return The decoded metadata object, or null if the metadata could not be decoded. + */ + @Nullable + Metadata decode(MetadataInputBuffer inputBuffer); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataDecoderFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataDecoderFactory.java new file mode 100644 index 0000000000..30f6aad4a9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataDecoderFactory.java @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.emsg.EventMessageDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.icy.IcyDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.scte35.SpliceInfoDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; + +/** + * A factory for {@link MetadataDecoder} instances. + */ +public interface MetadataDecoderFactory { + + /** + * Returns whether the factory is able to instantiate a {@link MetadataDecoder} for the given + * {@link Format}. + * + * @param format The {@link Format}. + * @return Whether the factory can instantiate a suitable {@link MetadataDecoder}. + */ + boolean supportsFormat(Format format); + + /** + * Creates a {@link MetadataDecoder} for the given {@link Format}. + * + * @param format The {@link Format}. + * @return A new {@link MetadataDecoder}. + * @throws IllegalArgumentException If the {@link Format} is not supported. + */ + MetadataDecoder createDecoder(Format format); + + /** + * Default {@link MetadataDecoder} implementation. + * + *

The formats supported by this factory are: + * + *

    + *
  • ID3 ({@link Id3Decoder}) + *
  • EMSG ({@link EventMessageDecoder}) + *
  • SCTE-35 ({@link SpliceInfoDecoder}) + *
  • ICY ({@link IcyDecoder}) + *
+ */ + MetadataDecoderFactory DEFAULT = + new MetadataDecoderFactory() { + + @Override + public boolean supportsFormat(Format format) { + @Nullable String mimeType = format.sampleMimeType; + return MimeTypes.APPLICATION_ID3.equals(mimeType) + || MimeTypes.APPLICATION_EMSG.equals(mimeType) + || MimeTypes.APPLICATION_SCTE35.equals(mimeType) + || MimeTypes.APPLICATION_ICY.equals(mimeType); + } + + @Override + public MetadataDecoder createDecoder(Format format) { + @Nullable String mimeType = format.sampleMimeType; + if (mimeType != null) { + switch (mimeType) { + case MimeTypes.APPLICATION_ID3: + return new Id3Decoder(); + case MimeTypes.APPLICATION_EMSG: + return new EventMessageDecoder(); + case MimeTypes.APPLICATION_SCTE35: + return new SpliceInfoDecoder(); + case MimeTypes.APPLICATION_ICY: + return new IcyDecoder(); + default: + break; + } + } + throw new IllegalArgumentException( + "Attempted to create decoder for unsupported MIME type: " + mimeType); + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataInputBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataInputBuffer.java new file mode 100644 index 0000000000..9a265744ec --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataInputBuffer.java @@ -0,0 +1,36 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; + +/** + * A {@link DecoderInputBuffer} for a {@link MetadataDecoder}. + */ +public final class MetadataInputBuffer extends DecoderInputBuffer { + + /** + * An offset that must be added to the metadata's timestamps after it's been decoded, or + * {@link Format#OFFSET_SAMPLE_RELATIVE} if {@link #timeUs} should be added. + */ + public long subsampleOffsetUs; + + public MetadataInputBuffer() { + super(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_NORMAL); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataOutput.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataOutput.java new file mode 100644 index 0000000000..025f9f01bc --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataOutput.java @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata; + +/** + * Receives metadata output. + */ +public interface MetadataOutput { + + /** + * Called when there is metadata associated with current playback time. + * + * @param metadata The metadata. + */ + void onMetadata(Metadata metadata); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataRenderer.java new file mode 100644 index 0000000000..329f9ffa7d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/MetadataRenderer.java @@ -0,0 +1,236 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Handler; +import android.os.Handler.Callback; +import android.os.Looper; +import android.os.Message; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.BaseRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * A renderer for metadata. + */ +public final class MetadataRenderer extends BaseRenderer implements Callback { + + private static final int MSG_INVOKE_RENDERER = 0; + // TODO: Holding multiple pending metadata objects is temporary mitigation against + // https://github.com/google/ExoPlayer/issues/1874. It should be removed once this issue has been + // addressed. + private static final int MAX_PENDING_METADATA_COUNT = 5; + + private final MetadataDecoderFactory decoderFactory; + private final MetadataOutput output; + @Nullable private final Handler outputHandler; + private final MetadataInputBuffer buffer; + private final @NullableType Metadata[] pendingMetadata; + private final long[] pendingMetadataTimestamps; + + private int pendingMetadataIndex; + private int pendingMetadataCount; + @Nullable private MetadataDecoder decoder; + private boolean inputStreamEnded; + private long subsampleOffsetUs; + + /** + * @param output The output. + * @param outputLooper The looper associated with the thread on which the output should be called. + * If the output makes use of standard Android UI components, then this should normally be the + * looper associated with the application's main thread, which can be obtained using {@link + * android.app.Activity#getMainLooper()}. Null may be passed if the output should be called + * directly on the player's internal rendering thread. + */ + public MetadataRenderer(MetadataOutput output, @Nullable Looper outputLooper) { + this(output, outputLooper, MetadataDecoderFactory.DEFAULT); + } + + /** + * @param output The output. + * @param outputLooper The looper associated with the thread on which the output should be called. + * If the output makes use of standard Android UI components, then this should normally be the + * looper associated with the application's main thread, which can be obtained using {@link + * android.app.Activity#getMainLooper()}. Null may be passed if the output should be called + * directly on the player's internal rendering thread. + * @param decoderFactory A factory from which to obtain {@link MetadataDecoder} instances. + */ + public MetadataRenderer( + MetadataOutput output, @Nullable Looper outputLooper, MetadataDecoderFactory decoderFactory) { + super(C.TRACK_TYPE_METADATA); + this.output = Assertions.checkNotNull(output); + this.outputHandler = + outputLooper == null ? null : Util.createHandler(outputLooper, /* callback= */ this); + this.decoderFactory = Assertions.checkNotNull(decoderFactory); + buffer = new MetadataInputBuffer(); + pendingMetadata = new Metadata[MAX_PENDING_METADATA_COUNT]; + pendingMetadataTimestamps = new long[MAX_PENDING_METADATA_COUNT]; + } + + @Override + @Capabilities + public int supportsFormat(Format format) { + if (decoderFactory.supportsFormat(format)) { + return RendererCapabilities.create( + supportsFormatDrm(null, format.drmInitData) ? FORMAT_HANDLED : FORMAT_UNSUPPORTED_DRM); + } else { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_TYPE); + } + } + + @Override + protected void onStreamChanged(Format[] formats, long offsetUs) { + decoder = decoderFactory.createDecoder(formats[0]); + } + + @Override + protected void onPositionReset(long positionUs, boolean joining) { + flushPendingMetadata(); + inputStreamEnded = false; + } + + @Override + public void render(long positionUs, long elapsedRealtimeUs) { + if (!inputStreamEnded && pendingMetadataCount < MAX_PENDING_METADATA_COUNT) { + buffer.clear(); + FormatHolder formatHolder = getFormatHolder(); + int result = readSource(formatHolder, buffer, false); + if (result == C.RESULT_BUFFER_READ) { + if (buffer.isEndOfStream()) { + inputStreamEnded = true; + } else if (buffer.isDecodeOnly()) { + // Do nothing. Note this assumes that all metadata buffers can be decoded independently. + // If we ever need to support a metadata format where this is not the case, we'll need to + // pass the buffer to the decoder and discard the output. + } else { + buffer.subsampleOffsetUs = subsampleOffsetUs; + buffer.flip(); + @Nullable Metadata metadata = castNonNull(decoder).decode(buffer); + if (metadata != null) { + List entries = new ArrayList<>(metadata.length()); + decodeWrappedMetadata(metadata, entries); + if (!entries.isEmpty()) { + Metadata expandedMetadata = new Metadata(entries); + int index = + (pendingMetadataIndex + pendingMetadataCount) % MAX_PENDING_METADATA_COUNT; + pendingMetadata[index] = expandedMetadata; + pendingMetadataTimestamps[index] = buffer.timeUs; + pendingMetadataCount++; + } + } + } + } else if (result == C.RESULT_FORMAT_READ) { + subsampleOffsetUs = Assertions.checkNotNull(formatHolder.format).subsampleOffsetUs; + } + } + + if (pendingMetadataCount > 0 && pendingMetadataTimestamps[pendingMetadataIndex] <= positionUs) { + Metadata metadata = castNonNull(pendingMetadata[pendingMetadataIndex]); + invokeRenderer(metadata); + pendingMetadata[pendingMetadataIndex] = null; + pendingMetadataIndex = (pendingMetadataIndex + 1) % MAX_PENDING_METADATA_COUNT; + pendingMetadataCount--; + } + } + + /** + * Iterates through {@code metadata.entries} and checks each one to see if contains wrapped + * metadata. If it does, then we recursively decode the wrapped metadata. If it doesn't (recursion + * base-case), we add the {@link Metadata.Entry} to {@code decodedEntries} (output parameter). + */ + private void decodeWrappedMetadata(Metadata metadata, List decodedEntries) { + for (int i = 0; i < metadata.length(); i++) { + @Nullable Format wrappedMetadataFormat = metadata.get(i).getWrappedMetadataFormat(); + if (wrappedMetadataFormat != null && decoderFactory.supportsFormat(wrappedMetadataFormat)) { + MetadataDecoder wrappedMetadataDecoder = + decoderFactory.createDecoder(wrappedMetadataFormat); + // wrappedMetadataFormat != null so wrappedMetadataBytes must be non-null too. + byte[] wrappedMetadataBytes = + Assertions.checkNotNull(metadata.get(i).getWrappedMetadataBytes()); + buffer.clear(); + buffer.ensureSpaceForWrite(wrappedMetadataBytes.length); + castNonNull(buffer.data).put(wrappedMetadataBytes); + buffer.flip(); + @Nullable Metadata innerMetadata = wrappedMetadataDecoder.decode(buffer); + if (innerMetadata != null) { + // The decoding succeeded, so we'll try another level of unwrapping. + decodeWrappedMetadata(innerMetadata, decodedEntries); + } + } else { + // Entry doesn't contain any wrapped metadata, so output it directly. + decodedEntries.add(metadata.get(i)); + } + } + } + + @Override + protected void onDisabled() { + flushPendingMetadata(); + decoder = null; + } + + @Override + public boolean isEnded() { + return inputStreamEnded; + } + + @Override + public boolean isReady() { + return true; + } + + private void invokeRenderer(Metadata metadata) { + if (outputHandler != null) { + outputHandler.obtainMessage(MSG_INVOKE_RENDERER, metadata).sendToTarget(); + } else { + invokeRendererInternal(metadata); + } + } + + private void flushPendingMetadata() { + Arrays.fill(pendingMetadata, null); + pendingMetadataIndex = 0; + pendingMetadataCount = 0; + } + + @Override + public boolean handleMessage(Message msg) { + switch (msg.what) { + case MSG_INVOKE_RENDERER: + invokeRendererInternal((Metadata) msg.obj); + return true; + default: + // Should never happen. + throw new IllegalStateException(); + } + } + + private void invokeRendererInternal(Metadata metadata) { + output.onMetadata(metadata); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessage.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessage.java new file mode 100644 index 0000000000..01aac27a27 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessage.java @@ -0,0 +1,202 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.emsg; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** An Event Message (emsg) as defined in ISO 23009-1. */ +public final class EventMessage implements Metadata.Entry { + + /** + * emsg scheme_id_uri from the CMAF + * spec. + */ + @VisibleForTesting public static final String ID3_SCHEME_ID_AOM = "https://aomedia.org/emsg/ID3"; + + /** + * The Apple-hosted scheme_id equivalent to {@code ID3_SCHEME_ID_AOM} - used before AOM adoption. + */ + private static final String ID3_SCHEME_ID_APPLE = + "https://developer.apple.com/streaming/emsg-id3"; + + /** + * scheme_id_uri from section 7.3.2 of SCTE 214-3 + * 2015. + */ + @VisibleForTesting public static final String SCTE35_SCHEME_ID = "urn:scte:scte35:2014:bin"; + + private static final Format ID3_FORMAT = + Format.createSampleFormat( + /* id= */ null, MimeTypes.APPLICATION_ID3, Format.OFFSET_SAMPLE_RELATIVE); + private static final Format SCTE35_FORMAT = + Format.createSampleFormat( + /* id= */ null, MimeTypes.APPLICATION_SCTE35, Format.OFFSET_SAMPLE_RELATIVE); + + /** The message scheme. */ + public final String schemeIdUri; + + /** + * The value for the event. + */ + public final String value; + + /** + * The duration of the event in milliseconds. + */ + public final long durationMs; + + /** + * The instance identifier. + */ + public final long id; + + /** + * The body of the message. + */ + public final byte[] messageData; + + // Lazily initialized hashcode. + private int hashCode; + + /** + * @param schemeIdUri The message scheme. + * @param value The value for the event. + * @param durationMs The duration of the event in milliseconds. + * @param id The instance identifier. + * @param messageData The body of the message. + */ + public EventMessage( + String schemeIdUri, String value, long durationMs, long id, byte[] messageData) { + this.schemeIdUri = schemeIdUri; + this.value = value; + this.durationMs = durationMs; + this.id = id; + this.messageData = messageData; + } + + /* package */ EventMessage(Parcel in) { + schemeIdUri = castNonNull(in.readString()); + value = castNonNull(in.readString()); + durationMs = in.readLong(); + id = in.readLong(); + messageData = castNonNull(in.createByteArray()); + } + + @Override + @Nullable + public Format getWrappedMetadataFormat() { + switch (schemeIdUri) { + case ID3_SCHEME_ID_AOM: + case ID3_SCHEME_ID_APPLE: + return ID3_FORMAT; + case SCTE35_SCHEME_ID: + return SCTE35_FORMAT; + default: + return null; + } + } + + @Override + @Nullable + public byte[] getWrappedMetadataBytes() { + return getWrappedMetadataFormat() != null ? messageData : null; + } + + @Override + public int hashCode() { + if (hashCode == 0) { + int result = 17; + result = 31 * result + (schemeIdUri != null ? schemeIdUri.hashCode() : 0); + result = 31 * result + (value != null ? value.hashCode() : 0); + result = 31 * result + (int) (durationMs ^ (durationMs >>> 32)); + result = 31 * result + (int) (id ^ (id >>> 32)); + result = 31 * result + Arrays.hashCode(messageData); + hashCode = result; + } + return hashCode; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + EventMessage other = (EventMessage) obj; + return durationMs == other.durationMs + && id == other.id + && Util.areEqual(schemeIdUri, other.schemeIdUri) + && Util.areEqual(value, other.value) + && Arrays.equals(messageData, other.messageData); + } + + @Override + public String toString() { + return "EMSG: scheme=" + + schemeIdUri + + ", id=" + + id + + ", durationMs=" + + durationMs + + ", value=" + + value; + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(schemeIdUri); + dest.writeString(value); + dest.writeLong(durationMs); + dest.writeLong(id); + dest.writeByteArray(messageData); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public EventMessage createFromParcel(Parcel in) { + return new EventMessage(in); + } + + @Override + public EventMessage[] newArray(int size) { + return new EventMessage[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessageDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessageDecoder.java new file mode 100644 index 0000000000..09b0a69395 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessageDecoder.java @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.emsg; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.nio.ByteBuffer; +import java.util.Arrays; + +/** Decodes data encoded by {@link EventMessageEncoder}. */ +public final class EventMessageDecoder implements MetadataDecoder { + + @SuppressWarnings("ByteBufferBackingArray") + @Override + public Metadata decode(MetadataInputBuffer inputBuffer) { + ByteBuffer buffer = Assertions.checkNotNull(inputBuffer.data); + byte[] data = buffer.array(); + int size = buffer.limit(); + return new Metadata(decode(new ParsableByteArray(data, size))); + } + + public EventMessage decode(ParsableByteArray emsgData) { + String schemeIdUri = Assertions.checkNotNull(emsgData.readNullTerminatedString()); + String value = Assertions.checkNotNull(emsgData.readNullTerminatedString()); + long durationMs = emsgData.readUnsignedInt(); + long id = emsgData.readUnsignedInt(); + byte[] messageData = + Arrays.copyOfRange(emsgData.data, emsgData.getPosition(), emsgData.limit()); + return new EventMessage(schemeIdUri, value, durationMs, id, messageData); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessageEncoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessageEncoder.java new file mode 100644 index 0000000000..261e39ae70 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/EventMessageEncoder.java @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.emsg; + +import java.io.ByteArrayOutputStream; +import java.io.DataOutputStream; +import java.io.IOException; + +/** + * Encodes data that can be decoded by {@link EventMessageDecoder}. This class isn't thread safe. + */ +public final class EventMessageEncoder { + + private final ByteArrayOutputStream byteArrayOutputStream; + private final DataOutputStream dataOutputStream; + + public EventMessageEncoder() { + byteArrayOutputStream = new ByteArrayOutputStream(512); + dataOutputStream = new DataOutputStream(byteArrayOutputStream); + } + + /** + * Encodes an {@link EventMessage} to a byte array that can be decoded by {@link + * EventMessageDecoder}. + * + * @param eventMessage The event message to be encoded. + * @return The serialized byte array. + */ + public byte[] encode(EventMessage eventMessage) { + byteArrayOutputStream.reset(); + try { + writeNullTerminatedString(dataOutputStream, eventMessage.schemeIdUri); + String nonNullValue = eventMessage.value != null ? eventMessage.value : ""; + writeNullTerminatedString(dataOutputStream, nonNullValue); + writeUnsignedInt(dataOutputStream, eventMessage.durationMs); + writeUnsignedInt(dataOutputStream, eventMessage.id); + dataOutputStream.write(eventMessage.messageData); + dataOutputStream.flush(); + return byteArrayOutputStream.toByteArray(); + } catch (IOException e) { + // Should never happen. + throw new RuntimeException(e); + } + } + + private static void writeNullTerminatedString(DataOutputStream dataOutputStream, String value) + throws IOException { + dataOutputStream.writeBytes(value); + dataOutputStream.writeByte(0); + } + + private static void writeUnsignedInt(DataOutputStream outputStream, long value) + throws IOException { + outputStream.writeByte((int) (value >>> 24) & 0xFF); + outputStream.writeByte((int) (value >>> 16) & 0xFF); + outputStream.writeByte((int) (value >>> 8) & 0xFF); + outputStream.writeByte((int) value & 0xFF); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/package-info.java new file mode 100644 index 0000000000..3e54b59a8c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/emsg/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.emsg; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/flac/PictureFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/flac/PictureFrame.java new file mode 100644 index 0000000000..8a7ffbd976 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/flac/PictureFrame.java @@ -0,0 +1,144 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.flac; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import java.util.Arrays; + +/** A picture parsed from a FLAC file. */ +public final class PictureFrame implements Metadata.Entry { + + /** The type of the picture. */ + public final int pictureType; + /** The mime type of the picture. */ + public final String mimeType; + /** A description of the picture. */ + public final String description; + /** The width of the picture in pixels. */ + public final int width; + /** The height of the picture in pixels. */ + public final int height; + /** The color depth of the picture in bits-per-pixel. */ + public final int depth; + /** For indexed-color pictures (e.g. GIF), the number of colors used. 0 otherwise. */ + public final int colors; + /** The encoded picture data. */ + public final byte[] pictureData; + + public PictureFrame( + int pictureType, + String mimeType, + String description, + int width, + int height, + int depth, + int colors, + byte[] pictureData) { + this.pictureType = pictureType; + this.mimeType = mimeType; + this.description = description; + this.width = width; + this.height = height; + this.depth = depth; + this.colors = colors; + this.pictureData = pictureData; + } + + /* package */ PictureFrame(Parcel in) { + this.pictureType = in.readInt(); + this.mimeType = castNonNull(in.readString()); + this.description = castNonNull(in.readString()); + this.width = in.readInt(); + this.height = in.readInt(); + this.depth = in.readInt(); + this.colors = in.readInt(); + this.pictureData = castNonNull(in.createByteArray()); + } + + @Override + public String toString() { + return "Picture: mimeType=" + mimeType + ", description=" + description; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + PictureFrame other = (PictureFrame) obj; + return (pictureType == other.pictureType) + && mimeType.equals(other.mimeType) + && description.equals(other.description) + && (width == other.width) + && (height == other.height) + && (depth == other.depth) + && (colors == other.colors) + && Arrays.equals(pictureData, other.pictureData); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + pictureType; + result = 31 * result + mimeType.hashCode(); + result = 31 * result + description.hashCode(); + result = 31 * result + width; + result = 31 * result + height; + result = 31 * result + depth; + result = 31 * result + colors; + result = 31 * result + Arrays.hashCode(pictureData); + return result; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeInt(pictureType); + dest.writeString(mimeType); + dest.writeString(description); + dest.writeInt(width); + dest.writeInt(height); + dest.writeInt(depth); + dest.writeInt(colors); + dest.writeByteArray(pictureData); + } + + @Override + public int describeContents() { + return 0; + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public PictureFrame createFromParcel(Parcel in) { + return new PictureFrame(in); + } + + @Override + public PictureFrame[] newArray(int size) { + return new PictureFrame[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/flac/VorbisComment.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/flac/VorbisComment.java new file mode 100644 index 0000000000..b777582b5d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/flac/VorbisComment.java @@ -0,0 +1,99 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.flac; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; + +/** A vorbis comment. */ +public final class VorbisComment implements Metadata.Entry { + + /** The key. */ + public final String key; + + /** The value. */ + public final String value; + + /** + * @param key The key. + * @param value The value. + */ + public VorbisComment(String key, String value) { + this.key = key; + this.value = value; + } + + /* package */ VorbisComment(Parcel in) { + this.key = castNonNull(in.readString()); + this.value = castNonNull(in.readString()); + } + + @Override + public String toString() { + return "VC: " + key + "=" + value; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + VorbisComment other = (VorbisComment) obj; + return key.equals(other.key) && value.equals(other.value); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + key.hashCode(); + result = 31 * result + value.hashCode(); + return result; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(key); + dest.writeString(value); + } + + @Override + public int describeContents() { + return 0; + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public VorbisComment createFromParcel(Parcel in) { + return new VorbisComment(in); + } + + @Override + public VorbisComment[] newArray(int size) { + return new VorbisComment[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/flac/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/flac/package-info.java new file mode 100644 index 0000000000..02353ec303 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/flac/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.flac; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/IcyDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/IcyDecoder.java new file mode 100644 index 0000000000..1d44219eda --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/IcyDecoder.java @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.icy; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.nio.ByteBuffer; +import java.nio.charset.CharacterCodingException; +import java.nio.charset.Charset; +import java.nio.charset.CharsetDecoder; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** Decodes ICY stream information. */ +public final class IcyDecoder implements MetadataDecoder { + + private static final Pattern METADATA_ELEMENT = Pattern.compile("(.+?)='(.*?)';", Pattern.DOTALL); + private static final String STREAM_KEY_NAME = "streamtitle"; + private static final String STREAM_KEY_URL = "streamurl"; + + private final CharsetDecoder utf8Decoder; + private final CharsetDecoder iso88591Decoder; + + public IcyDecoder() { + utf8Decoder = Charset.forName(C.UTF8_NAME).newDecoder(); + iso88591Decoder = Charset.forName(C.ISO88591_NAME).newDecoder(); + } + + @Override + @SuppressWarnings("ByteBufferBackingArray") + public Metadata decode(MetadataInputBuffer inputBuffer) { + ByteBuffer buffer = Assertions.checkNotNull(inputBuffer.data); + @Nullable String icyString = decodeToString(buffer); + byte[] icyBytes = new byte[buffer.limit()]; + buffer.get(icyBytes); + + if (icyString == null) { + return new Metadata(new IcyInfo(icyBytes, /* title= */ null, /* url= */ null)); + } + + @Nullable String name = null; + @Nullable String url = null; + int index = 0; + Matcher matcher = METADATA_ELEMENT.matcher(icyString); + while (matcher.find(index)) { + @Nullable String key = Util.toLowerInvariant(matcher.group(1)); + @Nullable String value = matcher.group(2); + switch (key) { + case STREAM_KEY_NAME: + name = value; + break; + case STREAM_KEY_URL: + url = value; + break; + } + index = matcher.end(); + } + return new Metadata(new IcyInfo(icyBytes, name, url)); + } + + // The ICY spec doesn't specify a character encoding, and there's no way to communicate one + // either. So try decoding UTF-8 first, then fall back to ISO-8859-1. + // https://github.com/google/ExoPlayer/issues/6753 + @Nullable + private String decodeToString(ByteBuffer data) { + try { + return utf8Decoder.decode(data).toString(); + } catch (CharacterCodingException e) { + // Fall through to try ISO-8859-1 decoding. + } finally { + utf8Decoder.reset(); + data.rewind(); + } + try { + return iso88591Decoder.decode(data).toString(); + } catch (CharacterCodingException e) { + return null; + } finally { + iso88591Decoder.reset(); + data.rewind(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/IcyHeaders.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/IcyHeaders.java new file mode 100644 index 0000000000..638e7594eb --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/IcyHeaders.java @@ -0,0 +1,243 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.icy; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.List; +import java.util.Map; + +/** ICY headers. */ +public final class IcyHeaders implements Metadata.Entry { + + public static final String REQUEST_HEADER_ENABLE_METADATA_NAME = "Icy-MetaData"; + public static final String REQUEST_HEADER_ENABLE_METADATA_VALUE = "1"; + + private static final String TAG = "IcyHeaders"; + + private static final String RESPONSE_HEADER_BITRATE = "icy-br"; + private static final String RESPONSE_HEADER_GENRE = "icy-genre"; + private static final String RESPONSE_HEADER_NAME = "icy-name"; + private static final String RESPONSE_HEADER_URL = "icy-url"; + private static final String RESPONSE_HEADER_PUB = "icy-pub"; + private static final String RESPONSE_HEADER_METADATA_INTERVAL = "icy-metaint"; + + /** + * Parses {@link IcyHeaders} from response headers. + * + * @param responseHeaders The response headers. + * @return The parsed {@link IcyHeaders}, or {@code null} if no ICY headers were present. + */ + @Nullable + public static IcyHeaders parse(Map> responseHeaders) { + boolean icyHeadersPresent = false; + int bitrate = Format.NO_VALUE; + String genre = null; + String name = null; + String url = null; + boolean isPublic = false; + int metadataInterval = C.LENGTH_UNSET; + + List headers = responseHeaders.get(RESPONSE_HEADER_BITRATE); + if (headers != null) { + String bitrateHeader = headers.get(0); + try { + bitrate = Integer.parseInt(bitrateHeader) * 1000; + if (bitrate > 0) { + icyHeadersPresent = true; + } else { + Log.w(TAG, "Invalid bitrate: " + bitrateHeader); + bitrate = Format.NO_VALUE; + } + } catch (NumberFormatException e) { + Log.w(TAG, "Invalid bitrate header: " + bitrateHeader); + } + } + headers = responseHeaders.get(RESPONSE_HEADER_GENRE); + if (headers != null) { + genre = headers.get(0); + icyHeadersPresent = true; + } + headers = responseHeaders.get(RESPONSE_HEADER_NAME); + if (headers != null) { + name = headers.get(0); + icyHeadersPresent = true; + } + headers = responseHeaders.get(RESPONSE_HEADER_URL); + if (headers != null) { + url = headers.get(0); + icyHeadersPresent = true; + } + headers = responseHeaders.get(RESPONSE_HEADER_PUB); + if (headers != null) { + isPublic = headers.get(0).equals("1"); + icyHeadersPresent = true; + } + headers = responseHeaders.get(RESPONSE_HEADER_METADATA_INTERVAL); + if (headers != null) { + String metadataIntervalHeader = headers.get(0); + try { + metadataInterval = Integer.parseInt(metadataIntervalHeader); + if (metadataInterval > 0) { + icyHeadersPresent = true; + } else { + Log.w(TAG, "Invalid metadata interval: " + metadataIntervalHeader); + metadataInterval = C.LENGTH_UNSET; + } + } catch (NumberFormatException e) { + Log.w(TAG, "Invalid metadata interval: " + metadataIntervalHeader); + } + } + return icyHeadersPresent + ? new IcyHeaders(bitrate, genre, name, url, isPublic, metadataInterval) + : null; + } + + /** + * Bitrate in bits per second ({@code (icy-br * 1000)}), or {@link Format#NO_VALUE} if the header + * was not present. + */ + public final int bitrate; + /** The genre ({@code icy-genre}). */ + @Nullable public final String genre; + /** The stream name ({@code icy-name}). */ + @Nullable public final String name; + /** The URL of the radio station ({@code icy-url}). */ + @Nullable public final String url; + /** + * Whether the radio station is listed ({@code icy-pub}), or {@code false} if the header was not + * present. + */ + public final boolean isPublic; + + /** + * The interval in bytes between metadata chunks ({@code icy-metaint}), or {@link C#LENGTH_UNSET} + * if the header was not present. + */ + public final int metadataInterval; + + /** + * @param bitrate See {@link #bitrate}. + * @param genre See {@link #genre}. + * @param name See {@link #name See}. + * @param url See {@link #url}. + * @param isPublic See {@link #isPublic}. + * @param metadataInterval See {@link #metadataInterval}. + */ + public IcyHeaders( + int bitrate, + @Nullable String genre, + @Nullable String name, + @Nullable String url, + boolean isPublic, + int metadataInterval) { + Assertions.checkArgument(metadataInterval == C.LENGTH_UNSET || metadataInterval > 0); + this.bitrate = bitrate; + this.genre = genre; + this.name = name; + this.url = url; + this.isPublic = isPublic; + this.metadataInterval = metadataInterval; + } + + /* package */ IcyHeaders(Parcel in) { + bitrate = in.readInt(); + genre = in.readString(); + name = in.readString(); + url = in.readString(); + isPublic = Util.readBoolean(in); + metadataInterval = in.readInt(); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + IcyHeaders other = (IcyHeaders) obj; + return bitrate == other.bitrate + && Util.areEqual(genre, other.genre) + && Util.areEqual(name, other.name) + && Util.areEqual(url, other.url) + && isPublic == other.isPublic + && metadataInterval == other.metadataInterval; + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + bitrate; + result = 31 * result + (genre != null ? genre.hashCode() : 0); + result = 31 * result + (name != null ? name.hashCode() : 0); + result = 31 * result + (url != null ? url.hashCode() : 0); + result = 31 * result + (isPublic ? 1 : 0); + result = 31 * result + metadataInterval; + return result; + } + + @Override + public String toString() { + return "IcyHeaders: name=\"" + + name + + "\", genre=\"" + + genre + + "\", bitrate=" + + bitrate + + ", metadataInterval=" + + metadataInterval; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeInt(bitrate); + dest.writeString(genre); + dest.writeString(name); + dest.writeString(url); + Util.writeBoolean(dest, isPublic); + dest.writeInt(metadataInterval); + } + + @Override + public int describeContents() { + return 0; + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public IcyHeaders createFromParcel(Parcel in) { + return new IcyHeaders(in); + } + + @Override + public IcyHeaders[] newArray(int size) { + return new IcyHeaders[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/IcyInfo.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/IcyInfo.java new file mode 100644 index 0000000000..4104e41c64 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/IcyInfo.java @@ -0,0 +1,107 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.icy; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.Arrays; + +/** ICY in-stream information. */ +public final class IcyInfo implements Metadata.Entry { + + /** The complete metadata bytes used to construct this IcyInfo. */ + public final byte[] rawMetadata; + /** The stream title if present and decodable, or {@code null}. */ + @Nullable public final String title; + /** The stream URL if present and decodable, or {@code null}. */ + @Nullable public final String url; + + /** + * Construct a new IcyInfo from the source metadata, and optionally a StreamTitle and StreamUrl + * that have been extracted. + * + * @param rawMetadata See {@link #rawMetadata}. + * @param title See {@link #title}. + * @param url See {@link #url}. + */ + public IcyInfo(byte[] rawMetadata, @Nullable String title, @Nullable String url) { + this.rawMetadata = rawMetadata; + this.title = title; + this.url = url; + } + + /* package */ IcyInfo(Parcel in) { + rawMetadata = Assertions.checkNotNull(in.createByteArray()); + title = in.readString(); + url = in.readString(); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + IcyInfo other = (IcyInfo) obj; + // title & url are derived from rawMetadata, so no need to include them in the comparison. + return Arrays.equals(rawMetadata, other.rawMetadata); + } + + @Override + public int hashCode() { + // title & url are derived from rawMetadata, so no need to include them in the hash. + return Arrays.hashCode(rawMetadata); + } + + @Override + public String toString() { + return String.format( + "ICY: title=\"%s\", url=\"%s\", rawMetadata.length=\"%s\"", title, url, rawMetadata.length); + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeByteArray(rawMetadata); + dest.writeString(title); + dest.writeString(url); + } + + @Override + public int describeContents() { + return 0; + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public IcyInfo createFromParcel(Parcel in) { + return new IcyInfo(in); + } + + @Override + public IcyInfo[] newArray(int size) { + return new IcyInfo[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/package-info.java new file mode 100644 index 0000000000..a8a45e2ef1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/icy/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.icy; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/ApicFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/ApicFrame.java new file mode 100644 index 0000000000..f151707e4b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/ApicFrame.java @@ -0,0 +1,108 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** + * APIC (Attached Picture) ID3 frame. + */ +public final class ApicFrame extends Id3Frame { + + public static final String ID = "APIC"; + + public final String mimeType; + @Nullable public final String description; + public final int pictureType; + public final byte[] pictureData; + + public ApicFrame( + String mimeType, @Nullable String description, int pictureType, byte[] pictureData) { + super(ID); + this.mimeType = mimeType; + this.description = description; + this.pictureType = pictureType; + this.pictureData = pictureData; + } + + /* package */ ApicFrame(Parcel in) { + super(ID); + mimeType = castNonNull(in.readString()); + description = in.readString(); + pictureType = in.readInt(); + pictureData = castNonNull(in.createByteArray()); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + ApicFrame other = (ApicFrame) obj; + return pictureType == other.pictureType && Util.areEqual(mimeType, other.mimeType) + && Util.areEqual(description, other.description) + && Arrays.equals(pictureData, other.pictureData); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + pictureType; + result = 31 * result + (mimeType != null ? mimeType.hashCode() : 0); + result = 31 * result + (description != null ? description.hashCode() : 0); + result = 31 * result + Arrays.hashCode(pictureData); + return result; + } + + @Override + public String toString() { + return id + ": mimeType=" + mimeType + ", description=" + description; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(mimeType); + dest.writeString(description); + dest.writeInt(pictureType); + dest.writeByteArray(pictureData); + } + + public static final Parcelable.Creator CREATOR = new Parcelable.Creator() { + + @Override + public ApicFrame createFromParcel(Parcel in) { + return new ApicFrame(in); + } + + @Override + public ApicFrame[] newArray(int size) { + return new ApicFrame[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/BinaryFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/BinaryFrame.java new file mode 100644 index 0000000000..adc66ccdfe --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/BinaryFrame.java @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import java.util.Arrays; + +/** + * Binary ID3 frame. + */ +public final class BinaryFrame extends Id3Frame { + + public final byte[] data; + + public BinaryFrame(String id, byte[] data) { + super(id); + this.data = data; + } + + /* package */ BinaryFrame(Parcel in) { + super(castNonNull(in.readString())); + data = castNonNull(in.createByteArray()); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + BinaryFrame other = (BinaryFrame) obj; + return id.equals(other.id) && Arrays.equals(data, other.data); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + id.hashCode(); + result = 31 * result + Arrays.hashCode(data); + return result; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(id); + dest.writeByteArray(data); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public BinaryFrame createFromParcel(Parcel in) { + return new BinaryFrame(in); + } + + @Override + public BinaryFrame[] newArray(int size) { + return new BinaryFrame[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/ChapterFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/ChapterFrame.java new file mode 100644 index 0000000000..348781dddf --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/ChapterFrame.java @@ -0,0 +1,145 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** + * Chapter information ID3 frame. + */ +public final class ChapterFrame extends Id3Frame { + + public static final String ID = "CHAP"; + + public final String chapterId; + public final int startTimeMs; + public final int endTimeMs; + /** + * The byte offset of the start of the chapter, or {@link C#POSITION_UNSET} if not set. + */ + public final long startOffset; + /** + * The byte offset of the end of the chapter, or {@link C#POSITION_UNSET} if not set. + */ + public final long endOffset; + private final Id3Frame[] subFrames; + + public ChapterFrame(String chapterId, int startTimeMs, int endTimeMs, long startOffset, + long endOffset, Id3Frame[] subFrames) { + super(ID); + this.chapterId = chapterId; + this.startTimeMs = startTimeMs; + this.endTimeMs = endTimeMs; + this.startOffset = startOffset; + this.endOffset = endOffset; + this.subFrames = subFrames; + } + + /* package */ ChapterFrame(Parcel in) { + super(ID); + this.chapterId = castNonNull(in.readString()); + this.startTimeMs = in.readInt(); + this.endTimeMs = in.readInt(); + this.startOffset = in.readLong(); + this.endOffset = in.readLong(); + int subFrameCount = in.readInt(); + subFrames = new Id3Frame[subFrameCount]; + for (int i = 0; i < subFrameCount; i++) { + subFrames[i] = in.readParcelable(Id3Frame.class.getClassLoader()); + } + } + + /** + * Returns the number of sub-frames. + */ + public int getSubFrameCount() { + return subFrames.length; + } + + /** + * Returns the sub-frame at {@code index}. + */ + public Id3Frame getSubFrame(int index) { + return subFrames[index]; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + ChapterFrame other = (ChapterFrame) obj; + return startTimeMs == other.startTimeMs + && endTimeMs == other.endTimeMs + && startOffset == other.startOffset + && endOffset == other.endOffset + && Util.areEqual(chapterId, other.chapterId) + && Arrays.equals(subFrames, other.subFrames); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + startTimeMs; + result = 31 * result + endTimeMs; + result = 31 * result + (int) startOffset; + result = 31 * result + (int) endOffset; + result = 31 * result + (chapterId != null ? chapterId.hashCode() : 0); + return result; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(chapterId); + dest.writeInt(startTimeMs); + dest.writeInt(endTimeMs); + dest.writeLong(startOffset); + dest.writeLong(endOffset); + dest.writeInt(subFrames.length); + for (Id3Frame subFrame : subFrames) { + dest.writeParcelable(subFrame, 0); + } + } + + @Override + public int describeContents() { + return 0; + } + + public static final Creator CREATOR = new Creator() { + + @Override + public ChapterFrame createFromParcel(Parcel in) { + return new ChapterFrame(in); + } + + @Override + public ChapterFrame[] newArray(int size) { + return new ChapterFrame[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/ChapterTocFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/ChapterTocFrame.java new file mode 100644 index 0000000000..9451151c16 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/ChapterTocFrame.java @@ -0,0 +1,127 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** + * Chapter table of contents ID3 frame. + */ +public final class ChapterTocFrame extends Id3Frame { + + public static final String ID = "CTOC"; + + public final String elementId; + public final boolean isRoot; + public final boolean isOrdered; + public final String[] children; + private final Id3Frame[] subFrames; + + public ChapterTocFrame(String elementId, boolean isRoot, boolean isOrdered, String[] children, + Id3Frame[] subFrames) { + super(ID); + this.elementId = elementId; + this.isRoot = isRoot; + this.isOrdered = isOrdered; + this.children = children; + this.subFrames = subFrames; + } + + /* package */ + ChapterTocFrame(Parcel in) { + super(ID); + this.elementId = castNonNull(in.readString()); + this.isRoot = in.readByte() != 0; + this.isOrdered = in.readByte() != 0; + this.children = castNonNull(in.createStringArray()); + int subFrameCount = in.readInt(); + subFrames = new Id3Frame[subFrameCount]; + for (int i = 0; i < subFrameCount; i++) { + subFrames[i] = in.readParcelable(Id3Frame.class.getClassLoader()); + } + } + + /** + * Returns the number of sub-frames. + */ + public int getSubFrameCount() { + return subFrames.length; + } + + /** + * Returns the sub-frame at {@code index}. + */ + public Id3Frame getSubFrame(int index) { + return subFrames[index]; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + ChapterTocFrame other = (ChapterTocFrame) obj; + return isRoot == other.isRoot + && isOrdered == other.isOrdered + && Util.areEqual(elementId, other.elementId) + && Arrays.equals(children, other.children) + && Arrays.equals(subFrames, other.subFrames); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + (isRoot ? 1 : 0); + result = 31 * result + (isOrdered ? 1 : 0); + result = 31 * result + (elementId != null ? elementId.hashCode() : 0); + return result; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(elementId); + dest.writeByte((byte) (isRoot ? 1 : 0)); + dest.writeByte((byte) (isOrdered ? 1 : 0)); + dest.writeStringArray(children); + dest.writeInt(subFrames.length); + for (Id3Frame subFrame : subFrames) { + dest.writeParcelable(subFrame, 0); + } + } + + public static final Creator CREATOR = new Creator() { + + @Override + public ChapterTocFrame createFromParcel(Parcel in) { + return new ChapterTocFrame(in); + } + + @Override + public ChapterTocFrame[] newArray(int size) { + return new ChapterTocFrame[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/CommentFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/CommentFrame.java new file mode 100644 index 0000000000..98b8c79a96 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/CommentFrame.java @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Comment ID3 frame. + */ +public final class CommentFrame extends Id3Frame { + + public static final String ID = "COMM"; + + public final String language; + public final String description; + public final String text; + + public CommentFrame(String language, String description, String text) { + super(ID); + this.language = language; + this.description = description; + this.text = text; + } + + /* package */ CommentFrame(Parcel in) { + super(ID); + language = castNonNull(in.readString()); + description = castNonNull(in.readString()); + text = castNonNull(in.readString()); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + CommentFrame other = (CommentFrame) obj; + return Util.areEqual(description, other.description) && Util.areEqual(language, other.language) + && Util.areEqual(text, other.text); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + (language != null ? language.hashCode() : 0); + result = 31 * result + (description != null ? description.hashCode() : 0); + result = 31 * result + (text != null ? text.hashCode() : 0); + return result; + } + + @Override + public String toString() { + return id + ": language=" + language + ", description=" + description; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(id); + dest.writeString(language); + dest.writeString(text); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public CommentFrame createFromParcel(Parcel in) { + return new CommentFrame(in); + } + + @Override + public CommentFrame[] newArray(int size) { + return new CommentFrame[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/GeobFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/GeobFrame.java new file mode 100644 index 0000000000..58a208a76a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/GeobFrame.java @@ -0,0 +1,112 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** + * GEOB (General Encapsulated Object) ID3 frame. + */ +public final class GeobFrame extends Id3Frame { + + public static final String ID = "GEOB"; + + public final String mimeType; + public final String filename; + public final String description; + public final byte[] data; + + public GeobFrame(String mimeType, String filename, String description, byte[] data) { + super(ID); + this.mimeType = mimeType; + this.filename = filename; + this.description = description; + this.data = data; + } + + /* package */ GeobFrame(Parcel in) { + super(ID); + mimeType = castNonNull(in.readString()); + filename = castNonNull(in.readString()); + description = castNonNull(in.readString()); + data = castNonNull(in.createByteArray()); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + GeobFrame other = (GeobFrame) obj; + return Util.areEqual(mimeType, other.mimeType) && Util.areEqual(filename, other.filename) + && Util.areEqual(description, other.description) && Arrays.equals(data, other.data); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + (mimeType != null ? mimeType.hashCode() : 0); + result = 31 * result + (filename != null ? filename.hashCode() : 0); + result = 31 * result + (description != null ? description.hashCode() : 0); + result = 31 * result + Arrays.hashCode(data); + return result; + } + + @Override + public String toString() { + return id + + ": mimeType=" + + mimeType + + ", filename=" + + filename + + ", description=" + + description; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(mimeType); + dest.writeString(filename); + dest.writeString(description); + dest.writeByteArray(data); + } + + public static final Parcelable.Creator CREATOR = new Parcelable.Creator() { + + @Override + public GeobFrame createFromParcel(Parcel in) { + return new GeobFrame(in); + } + + @Override + public GeobFrame[] newArray(int size) { + return new GeobFrame[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/Id3Decoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/Id3Decoder.java new file mode 100644 index 0000000000..36e004ed52 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/Id3Decoder.java @@ -0,0 +1,842 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.UnsupportedEncodingException; +import java.nio.ByteBuffer; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Locale; + +/** + * Decodes ID3 tags. + */ +public final class Id3Decoder implements MetadataDecoder { + + /** + * A predicate for determining whether individual frames should be decoded. + */ + public interface FramePredicate { + + /** + * Returns whether a frame with the specified parameters should be decoded. + * + * @param majorVersion The major version of the ID3 tag. + * @param id0 The first byte of the frame ID. + * @param id1 The second byte of the frame ID. + * @param id2 The third byte of the frame ID. + * @param id3 The fourth byte of the frame ID. + * @return Whether the frame should be decoded. + */ + boolean evaluate(int majorVersion, int id0, int id1, int id2, int id3); + + } + + /** A predicate that indicates no frames should be decoded. */ + public static final FramePredicate NO_FRAMES_PREDICATE = + (majorVersion, id0, id1, id2, id3) -> false; + + private static final String TAG = "Id3Decoder"; + + /** The first three bytes of a well formed ID3 tag header. */ + public static final int ID3_TAG = 0x00494433; + /** + * Length of an ID3 tag header. + */ + public static final int ID3_HEADER_LENGTH = 10; + + private static final int FRAME_FLAG_V3_IS_COMPRESSED = 0x0080; + private static final int FRAME_FLAG_V3_IS_ENCRYPTED = 0x0040; + private static final int FRAME_FLAG_V3_HAS_GROUP_IDENTIFIER = 0x0020; + private static final int FRAME_FLAG_V4_IS_COMPRESSED = 0x0008; + private static final int FRAME_FLAG_V4_IS_ENCRYPTED = 0x0004; + private static final int FRAME_FLAG_V4_HAS_GROUP_IDENTIFIER = 0x0040; + private static final int FRAME_FLAG_V4_IS_UNSYNCHRONIZED = 0x0002; + private static final int FRAME_FLAG_V4_HAS_DATA_LENGTH = 0x0001; + + private static final int ID3_TEXT_ENCODING_ISO_8859_1 = 0; + private static final int ID3_TEXT_ENCODING_UTF_16 = 1; + private static final int ID3_TEXT_ENCODING_UTF_16BE = 2; + private static final int ID3_TEXT_ENCODING_UTF_8 = 3; + + @Nullable private final FramePredicate framePredicate; + + public Id3Decoder() { + this(null); + } + + /** + * @param framePredicate Determines which frames are decoded. May be null to decode all frames. + */ + public Id3Decoder(@Nullable FramePredicate framePredicate) { + this.framePredicate = framePredicate; + } + + @SuppressWarnings("ByteBufferBackingArray") + @Override + @Nullable + public Metadata decode(MetadataInputBuffer inputBuffer) { + ByteBuffer buffer = Assertions.checkNotNull(inputBuffer.data); + return decode(buffer.array(), buffer.limit()); + } + + /** + * Decodes ID3 tags. + * + * @param data The bytes to decode ID3 tags from. + * @param size Amount of bytes in {@code data} to read. + * @return A {@link Metadata} object containing the decoded ID3 tags, or null if the data could + * not be decoded. + */ + @Nullable + public Metadata decode(byte[] data, int size) { + List id3Frames = new ArrayList<>(); + ParsableByteArray id3Data = new ParsableByteArray(data, size); + + Id3Header id3Header = decodeHeader(id3Data); + if (id3Header == null) { + return null; + } + + int startPosition = id3Data.getPosition(); + int frameHeaderSize = id3Header.majorVersion == 2 ? 6 : 10; + int framesSize = id3Header.framesSize; + if (id3Header.isUnsynchronized) { + framesSize = removeUnsynchronization(id3Data, id3Header.framesSize); + } + id3Data.setLimit(startPosition + framesSize); + + boolean unsignedIntFrameSizeHack = false; + if (!validateFrames(id3Data, id3Header.majorVersion, frameHeaderSize, false)) { + if (id3Header.majorVersion == 4 && validateFrames(id3Data, 4, frameHeaderSize, true)) { + unsignedIntFrameSizeHack = true; + } else { + Log.w(TAG, "Failed to validate ID3 tag with majorVersion=" + id3Header.majorVersion); + return null; + } + } + + while (id3Data.bytesLeft() >= frameHeaderSize) { + Id3Frame frame = decodeFrame(id3Header.majorVersion, id3Data, unsignedIntFrameSizeHack, + frameHeaderSize, framePredicate); + if (frame != null) { + id3Frames.add(frame); + } + } + + return new Metadata(id3Frames); + } + + /** + * @param data A {@link ParsableByteArray} from which the header should be read. + * @return The parsed header, or null if the ID3 tag is unsupported. + */ + @Nullable + private static Id3Header decodeHeader(ParsableByteArray data) { + if (data.bytesLeft() < ID3_HEADER_LENGTH) { + Log.w(TAG, "Data too short to be an ID3 tag"); + return null; + } + + int id = data.readUnsignedInt24(); + if (id != ID3_TAG) { + Log.w(TAG, "Unexpected first three bytes of ID3 tag header: 0x" + String.format("%06X", id)); + return null; + } + + int majorVersion = data.readUnsignedByte(); + data.skipBytes(1); // Skip minor version. + int flags = data.readUnsignedByte(); + int framesSize = data.readSynchSafeInt(); + + if (majorVersion == 2) { + boolean isCompressed = (flags & 0x40) != 0; + if (isCompressed) { + Log.w(TAG, "Skipped ID3 tag with majorVersion=2 and undefined compression scheme"); + return null; + } + } else if (majorVersion == 3) { + boolean hasExtendedHeader = (flags & 0x40) != 0; + if (hasExtendedHeader) { + int extendedHeaderSize = data.readInt(); // Size excluding size field. + data.skipBytes(extendedHeaderSize); + framesSize -= (extendedHeaderSize + 4); + } + } else if (majorVersion == 4) { + boolean hasExtendedHeader = (flags & 0x40) != 0; + if (hasExtendedHeader) { + int extendedHeaderSize = data.readSynchSafeInt(); // Size including size field. + data.skipBytes(extendedHeaderSize - 4); + framesSize -= extendedHeaderSize; + } + boolean hasFooter = (flags & 0x10) != 0; + if (hasFooter) { + framesSize -= 10; + } + } else { + Log.w(TAG, "Skipped ID3 tag with unsupported majorVersion=" + majorVersion); + return null; + } + + // isUnsynchronized is advisory only in version 4. Frame level flags are used instead. + boolean isUnsynchronized = majorVersion < 4 && (flags & 0x80) != 0; + return new Id3Header(majorVersion, isUnsynchronized, framesSize); + } + + private static boolean validateFrames(ParsableByteArray id3Data, int majorVersion, + int frameHeaderSize, boolean unsignedIntFrameSizeHack) { + int startPosition = id3Data.getPosition(); + try { + while (id3Data.bytesLeft() >= frameHeaderSize) { + // Read the next frame header. + int id; + long frameSize; + int flags; + if (majorVersion >= 3) { + id = id3Data.readInt(); + frameSize = id3Data.readUnsignedInt(); + flags = id3Data.readUnsignedShort(); + } else { + id = id3Data.readUnsignedInt24(); + frameSize = id3Data.readUnsignedInt24(); + flags = 0; + } + // Validate the frame header and skip to the next one. + if (id == 0 && frameSize == 0 && flags == 0) { + // We've reached zero padding after the end of the final frame. + return true; + } else { + if (majorVersion == 4 && !unsignedIntFrameSizeHack) { + // Parse the data size as a synchsafe integer, as per the spec. + if ((frameSize & 0x808080L) != 0) { + return false; + } + frameSize = (frameSize & 0xFF) | (((frameSize >> 8) & 0xFF) << 7) + | (((frameSize >> 16) & 0xFF) << 14) | (((frameSize >> 24) & 0xFF) << 21); + } + boolean hasGroupIdentifier = false; + boolean hasDataLength = false; + if (majorVersion == 4) { + hasGroupIdentifier = (flags & FRAME_FLAG_V4_HAS_GROUP_IDENTIFIER) != 0; + hasDataLength = (flags & FRAME_FLAG_V4_HAS_DATA_LENGTH) != 0; + } else if (majorVersion == 3) { + hasGroupIdentifier = (flags & FRAME_FLAG_V3_HAS_GROUP_IDENTIFIER) != 0; + // A V3 frame has data length if and only if it's compressed. + hasDataLength = (flags & FRAME_FLAG_V3_IS_COMPRESSED) != 0; + } + int minimumFrameSize = 0; + if (hasGroupIdentifier) { + minimumFrameSize++; + } + if (hasDataLength) { + minimumFrameSize += 4; + } + if (frameSize < minimumFrameSize) { + return false; + } + if (id3Data.bytesLeft() < frameSize) { + return false; + } + id3Data.skipBytes((int) frameSize); // flags + } + } + return true; + } finally { + id3Data.setPosition(startPosition); + } + } + + @Nullable + private static Id3Frame decodeFrame( + int majorVersion, + ParsableByteArray id3Data, + boolean unsignedIntFrameSizeHack, + int frameHeaderSize, + @Nullable FramePredicate framePredicate) { + int frameId0 = id3Data.readUnsignedByte(); + int frameId1 = id3Data.readUnsignedByte(); + int frameId2 = id3Data.readUnsignedByte(); + int frameId3 = majorVersion >= 3 ? id3Data.readUnsignedByte() : 0; + + int frameSize; + if (majorVersion == 4) { + frameSize = id3Data.readUnsignedIntToInt(); + if (!unsignedIntFrameSizeHack) { + frameSize = (frameSize & 0xFF) | (((frameSize >> 8) & 0xFF) << 7) + | (((frameSize >> 16) & 0xFF) << 14) | (((frameSize >> 24) & 0xFF) << 21); + } + } else if (majorVersion == 3) { + frameSize = id3Data.readUnsignedIntToInt(); + } else /* id3Header.majorVersion == 2 */ { + frameSize = id3Data.readUnsignedInt24(); + } + + int flags = majorVersion >= 3 ? id3Data.readUnsignedShort() : 0; + if (frameId0 == 0 && frameId1 == 0 && frameId2 == 0 && frameId3 == 0 && frameSize == 0 + && flags == 0) { + // We must be reading zero padding at the end of the tag. + id3Data.setPosition(id3Data.limit()); + return null; + } + + int nextFramePosition = id3Data.getPosition() + frameSize; + if (nextFramePosition > id3Data.limit()) { + Log.w(TAG, "Frame size exceeds remaining tag data"); + id3Data.setPosition(id3Data.limit()); + return null; + } + + if (framePredicate != null + && !framePredicate.evaluate(majorVersion, frameId0, frameId1, frameId2, frameId3)) { + // Filtered by the predicate. + id3Data.setPosition(nextFramePosition); + return null; + } + + // Frame flags. + boolean isCompressed = false; + boolean isEncrypted = false; + boolean isUnsynchronized = false; + boolean hasDataLength = false; + boolean hasGroupIdentifier = false; + if (majorVersion == 3) { + isCompressed = (flags & FRAME_FLAG_V3_IS_COMPRESSED) != 0; + isEncrypted = (flags & FRAME_FLAG_V3_IS_ENCRYPTED) != 0; + hasGroupIdentifier = (flags & FRAME_FLAG_V3_HAS_GROUP_IDENTIFIER) != 0; + // A V3 frame has data length if and only if it's compressed. + hasDataLength = isCompressed; + } else if (majorVersion == 4) { + hasGroupIdentifier = (flags & FRAME_FLAG_V4_HAS_GROUP_IDENTIFIER) != 0; + isCompressed = (flags & FRAME_FLAG_V4_IS_COMPRESSED) != 0; + isEncrypted = (flags & FRAME_FLAG_V4_IS_ENCRYPTED) != 0; + isUnsynchronized = (flags & FRAME_FLAG_V4_IS_UNSYNCHRONIZED) != 0; + hasDataLength = (flags & FRAME_FLAG_V4_HAS_DATA_LENGTH) != 0; + } + + if (isCompressed || isEncrypted) { + Log.w(TAG, "Skipping unsupported compressed or encrypted frame"); + id3Data.setPosition(nextFramePosition); + return null; + } + + if (hasGroupIdentifier) { + frameSize--; + id3Data.skipBytes(1); + } + if (hasDataLength) { + frameSize -= 4; + id3Data.skipBytes(4); + } + if (isUnsynchronized) { + frameSize = removeUnsynchronization(id3Data, frameSize); + } + + try { + Id3Frame frame; + if (frameId0 == 'T' && frameId1 == 'X' && frameId2 == 'X' + && (majorVersion == 2 || frameId3 == 'X')) { + frame = decodeTxxxFrame(id3Data, frameSize); + } else if (frameId0 == 'T') { + String id = getFrameId(majorVersion, frameId0, frameId1, frameId2, frameId3); + frame = decodeTextInformationFrame(id3Data, frameSize, id); + } else if (frameId0 == 'W' && frameId1 == 'X' && frameId2 == 'X' + && (majorVersion == 2 || frameId3 == 'X')) { + frame = decodeWxxxFrame(id3Data, frameSize); + } else if (frameId0 == 'W') { + String id = getFrameId(majorVersion, frameId0, frameId1, frameId2, frameId3); + frame = decodeUrlLinkFrame(id3Data, frameSize, id); + } else if (frameId0 == 'P' && frameId1 == 'R' && frameId2 == 'I' && frameId3 == 'V') { + frame = decodePrivFrame(id3Data, frameSize); + } else if (frameId0 == 'G' && frameId1 == 'E' && frameId2 == 'O' + && (frameId3 == 'B' || majorVersion == 2)) { + frame = decodeGeobFrame(id3Data, frameSize); + } else if (majorVersion == 2 ? (frameId0 == 'P' && frameId1 == 'I' && frameId2 == 'C') + : (frameId0 == 'A' && frameId1 == 'P' && frameId2 == 'I' && frameId3 == 'C')) { + frame = decodeApicFrame(id3Data, frameSize, majorVersion); + } else if (frameId0 == 'C' && frameId1 == 'O' && frameId2 == 'M' + && (frameId3 == 'M' || majorVersion == 2)) { + frame = decodeCommentFrame(id3Data, frameSize); + } else if (frameId0 == 'C' && frameId1 == 'H' && frameId2 == 'A' && frameId3 == 'P') { + frame = decodeChapterFrame(id3Data, frameSize, majorVersion, unsignedIntFrameSizeHack, + frameHeaderSize, framePredicate); + } else if (frameId0 == 'C' && frameId1 == 'T' && frameId2 == 'O' && frameId3 == 'C') { + frame = decodeChapterTOCFrame(id3Data, frameSize, majorVersion, unsignedIntFrameSizeHack, + frameHeaderSize, framePredicate); + } else if (frameId0 == 'M' && frameId1 == 'L' && frameId2 == 'L' && frameId3 == 'T') { + frame = decodeMlltFrame(id3Data, frameSize); + } else { + String id = getFrameId(majorVersion, frameId0, frameId1, frameId2, frameId3); + frame = decodeBinaryFrame(id3Data, frameSize, id); + } + if (frame == null) { + Log.w(TAG, "Failed to decode frame: id=" + + getFrameId(majorVersion, frameId0, frameId1, frameId2, frameId3) + ", frameSize=" + + frameSize); + } + return frame; + } catch (UnsupportedEncodingException e) { + Log.w(TAG, "Unsupported character encoding"); + return null; + } finally { + id3Data.setPosition(nextFramePosition); + } + } + + @Nullable + private static TextInformationFrame decodeTxxxFrame(ParsableByteArray id3Data, int frameSize) + throws UnsupportedEncodingException { + if (frameSize < 1) { + // Frame is malformed. + return null; + } + + int encoding = id3Data.readUnsignedByte(); + String charset = getCharsetName(encoding); + + byte[] data = new byte[frameSize - 1]; + id3Data.readBytes(data, 0, frameSize - 1); + + int descriptionEndIndex = indexOfEos(data, 0, encoding); + String description = new String(data, 0, descriptionEndIndex, charset); + + int valueStartIndex = descriptionEndIndex + delimiterLength(encoding); + int valueEndIndex = indexOfEos(data, valueStartIndex, encoding); + String value = decodeStringIfValid(data, valueStartIndex, valueEndIndex, charset); + + return new TextInformationFrame("TXXX", description, value); + } + + @Nullable + private static TextInformationFrame decodeTextInformationFrame( + ParsableByteArray id3Data, int frameSize, String id) throws UnsupportedEncodingException { + if (frameSize < 1) { + // Frame is malformed. + return null; + } + + int encoding = id3Data.readUnsignedByte(); + String charset = getCharsetName(encoding); + + byte[] data = new byte[frameSize - 1]; + id3Data.readBytes(data, 0, frameSize - 1); + + int valueEndIndex = indexOfEos(data, 0, encoding); + String value = new String(data, 0, valueEndIndex, charset); + + return new TextInformationFrame(id, null, value); + } + + @Nullable + private static UrlLinkFrame decodeWxxxFrame(ParsableByteArray id3Data, int frameSize) + throws UnsupportedEncodingException { + if (frameSize < 1) { + // Frame is malformed. + return null; + } + + int encoding = id3Data.readUnsignedByte(); + String charset = getCharsetName(encoding); + + byte[] data = new byte[frameSize - 1]; + id3Data.readBytes(data, 0, frameSize - 1); + + int descriptionEndIndex = indexOfEos(data, 0, encoding); + String description = new String(data, 0, descriptionEndIndex, charset); + + int urlStartIndex = descriptionEndIndex + delimiterLength(encoding); + int urlEndIndex = indexOfZeroByte(data, urlStartIndex); + String url = decodeStringIfValid(data, urlStartIndex, urlEndIndex, "ISO-8859-1"); + + return new UrlLinkFrame("WXXX", description, url); + } + + private static UrlLinkFrame decodeUrlLinkFrame(ParsableByteArray id3Data, int frameSize, + String id) throws UnsupportedEncodingException { + byte[] data = new byte[frameSize]; + id3Data.readBytes(data, 0, frameSize); + + int urlEndIndex = indexOfZeroByte(data, 0); + String url = new String(data, 0, urlEndIndex, "ISO-8859-1"); + + return new UrlLinkFrame(id, null, url); + } + + private static PrivFrame decodePrivFrame(ParsableByteArray id3Data, int frameSize) + throws UnsupportedEncodingException { + byte[] data = new byte[frameSize]; + id3Data.readBytes(data, 0, frameSize); + + int ownerEndIndex = indexOfZeroByte(data, 0); + String owner = new String(data, 0, ownerEndIndex, "ISO-8859-1"); + + int privateDataStartIndex = ownerEndIndex + 1; + byte[] privateData = copyOfRangeIfValid(data, privateDataStartIndex, data.length); + + return new PrivFrame(owner, privateData); + } + + private static GeobFrame decodeGeobFrame(ParsableByteArray id3Data, int frameSize) + throws UnsupportedEncodingException { + int encoding = id3Data.readUnsignedByte(); + String charset = getCharsetName(encoding); + + byte[] data = new byte[frameSize - 1]; + id3Data.readBytes(data, 0, frameSize - 1); + + int mimeTypeEndIndex = indexOfZeroByte(data, 0); + String mimeType = new String(data, 0, mimeTypeEndIndex, "ISO-8859-1"); + + int filenameStartIndex = mimeTypeEndIndex + 1; + int filenameEndIndex = indexOfEos(data, filenameStartIndex, encoding); + String filename = decodeStringIfValid(data, filenameStartIndex, filenameEndIndex, charset); + + int descriptionStartIndex = filenameEndIndex + delimiterLength(encoding); + int descriptionEndIndex = indexOfEos(data, descriptionStartIndex, encoding); + String description = + decodeStringIfValid(data, descriptionStartIndex, descriptionEndIndex, charset); + + int objectDataStartIndex = descriptionEndIndex + delimiterLength(encoding); + byte[] objectData = copyOfRangeIfValid(data, objectDataStartIndex, data.length); + + return new GeobFrame(mimeType, filename, description, objectData); + } + + private static ApicFrame decodeApicFrame(ParsableByteArray id3Data, int frameSize, + int majorVersion) throws UnsupportedEncodingException { + int encoding = id3Data.readUnsignedByte(); + String charset = getCharsetName(encoding); + + byte[] data = new byte[frameSize - 1]; + id3Data.readBytes(data, 0, frameSize - 1); + + String mimeType; + int mimeTypeEndIndex; + if (majorVersion == 2) { + mimeTypeEndIndex = 2; + mimeType = "image/" + Util.toLowerInvariant(new String(data, 0, 3, "ISO-8859-1")); + if ("image/jpg".equals(mimeType)) { + mimeType = "image/jpeg"; + } + } else { + mimeTypeEndIndex = indexOfZeroByte(data, 0); + mimeType = Util.toLowerInvariant(new String(data, 0, mimeTypeEndIndex, "ISO-8859-1")); + if (mimeType.indexOf('/') == -1) { + mimeType = "image/" + mimeType; + } + } + + int pictureType = data[mimeTypeEndIndex + 1] & 0xFF; + + int descriptionStartIndex = mimeTypeEndIndex + 2; + int descriptionEndIndex = indexOfEos(data, descriptionStartIndex, encoding); + String description = new String(data, descriptionStartIndex, + descriptionEndIndex - descriptionStartIndex, charset); + + int pictureDataStartIndex = descriptionEndIndex + delimiterLength(encoding); + byte[] pictureData = copyOfRangeIfValid(data, pictureDataStartIndex, data.length); + + return new ApicFrame(mimeType, description, pictureType, pictureData); + } + + @Nullable + private static CommentFrame decodeCommentFrame(ParsableByteArray id3Data, int frameSize) + throws UnsupportedEncodingException { + if (frameSize < 4) { + // Frame is malformed. + return null; + } + + int encoding = id3Data.readUnsignedByte(); + String charset = getCharsetName(encoding); + + byte[] data = new byte[3]; + id3Data.readBytes(data, 0, 3); + String language = new String(data, 0, 3); + + data = new byte[frameSize - 4]; + id3Data.readBytes(data, 0, frameSize - 4); + + int descriptionEndIndex = indexOfEos(data, 0, encoding); + String description = new String(data, 0, descriptionEndIndex, charset); + + int textStartIndex = descriptionEndIndex + delimiterLength(encoding); + int textEndIndex = indexOfEos(data, textStartIndex, encoding); + String text = decodeStringIfValid(data, textStartIndex, textEndIndex, charset); + + return new CommentFrame(language, description, text); + } + + private static ChapterFrame decodeChapterFrame( + ParsableByteArray id3Data, + int frameSize, + int majorVersion, + boolean unsignedIntFrameSizeHack, + int frameHeaderSize, + @Nullable FramePredicate framePredicate) + throws UnsupportedEncodingException { + int framePosition = id3Data.getPosition(); + int chapterIdEndIndex = indexOfZeroByte(id3Data.data, framePosition); + String chapterId = new String(id3Data.data, framePosition, chapterIdEndIndex - framePosition, + "ISO-8859-1"); + id3Data.setPosition(chapterIdEndIndex + 1); + + int startTime = id3Data.readInt(); + int endTime = id3Data.readInt(); + long startOffset = id3Data.readUnsignedInt(); + if (startOffset == 0xFFFFFFFFL) { + startOffset = C.POSITION_UNSET; + } + long endOffset = id3Data.readUnsignedInt(); + if (endOffset == 0xFFFFFFFFL) { + endOffset = C.POSITION_UNSET; + } + + ArrayList subFrames = new ArrayList<>(); + int limit = framePosition + frameSize; + while (id3Data.getPosition() < limit) { + Id3Frame frame = decodeFrame(majorVersion, id3Data, unsignedIntFrameSizeHack, + frameHeaderSize, framePredicate); + if (frame != null) { + subFrames.add(frame); + } + } + + Id3Frame[] subFrameArray = new Id3Frame[subFrames.size()]; + subFrames.toArray(subFrameArray); + return new ChapterFrame(chapterId, startTime, endTime, startOffset, endOffset, subFrameArray); + } + + private static ChapterTocFrame decodeChapterTOCFrame( + ParsableByteArray id3Data, + int frameSize, + int majorVersion, + boolean unsignedIntFrameSizeHack, + int frameHeaderSize, + @Nullable FramePredicate framePredicate) + throws UnsupportedEncodingException { + int framePosition = id3Data.getPosition(); + int elementIdEndIndex = indexOfZeroByte(id3Data.data, framePosition); + String elementId = new String(id3Data.data, framePosition, elementIdEndIndex - framePosition, + "ISO-8859-1"); + id3Data.setPosition(elementIdEndIndex + 1); + + int ctocFlags = id3Data.readUnsignedByte(); + boolean isRoot = (ctocFlags & 0x0002) != 0; + boolean isOrdered = (ctocFlags & 0x0001) != 0; + + int childCount = id3Data.readUnsignedByte(); + String[] children = new String[childCount]; + for (int i = 0; i < childCount; i++) { + int startIndex = id3Data.getPosition(); + int endIndex = indexOfZeroByte(id3Data.data, startIndex); + children[i] = new String(id3Data.data, startIndex, endIndex - startIndex, "ISO-8859-1"); + id3Data.setPosition(endIndex + 1); + } + + ArrayList subFrames = new ArrayList<>(); + int limit = framePosition + frameSize; + while (id3Data.getPosition() < limit) { + Id3Frame frame = decodeFrame(majorVersion, id3Data, unsignedIntFrameSizeHack, + frameHeaderSize, framePredicate); + if (frame != null) { + subFrames.add(frame); + } + } + + Id3Frame[] subFrameArray = new Id3Frame[subFrames.size()]; + subFrames.toArray(subFrameArray); + return new ChapterTocFrame(elementId, isRoot, isOrdered, children, subFrameArray); + } + + private static MlltFrame decodeMlltFrame(ParsableByteArray id3Data, int frameSize) { + // See ID3v2.4.0 native frames subsection 4.6. + int mpegFramesBetweenReference = id3Data.readUnsignedShort(); + int bytesBetweenReference = id3Data.readUnsignedInt24(); + int millisecondsBetweenReference = id3Data.readUnsignedInt24(); + int bitsForBytesDeviation = id3Data.readUnsignedByte(); + int bitsForMillisecondsDeviation = id3Data.readUnsignedByte(); + + ParsableBitArray references = new ParsableBitArray(); + references.reset(id3Data); + int referencesBits = 8 * (frameSize - 10); + int bitsPerReference = bitsForBytesDeviation + bitsForMillisecondsDeviation; + int referencesCount = referencesBits / bitsPerReference; + int[] bytesDeviations = new int[referencesCount]; + int[] millisecondsDeviations = new int[referencesCount]; + for (int i = 0; i < referencesCount; i++) { + int bytesDeviation = references.readBits(bitsForBytesDeviation); + int millisecondsDeviation = references.readBits(bitsForMillisecondsDeviation); + bytesDeviations[i] = bytesDeviation; + millisecondsDeviations[i] = millisecondsDeviation; + } + + return new MlltFrame( + mpegFramesBetweenReference, + bytesBetweenReference, + millisecondsBetweenReference, + bytesDeviations, + millisecondsDeviations); + } + + private static BinaryFrame decodeBinaryFrame(ParsableByteArray id3Data, int frameSize, + String id) { + byte[] frame = new byte[frameSize]; + id3Data.readBytes(frame, 0, frameSize); + + return new BinaryFrame(id, frame); + } + + /** + * Performs in-place removal of unsynchronization for {@code length} bytes starting from + * {@link ParsableByteArray#getPosition()} + * + * @param data Contains the data to be processed. + * @param length The length of the data to be processed. + * @return The length of the data after processing. + */ + private static int removeUnsynchronization(ParsableByteArray data, int length) { + byte[] bytes = data.data; + int startPosition = data.getPosition(); + for (int i = startPosition; i + 1 < startPosition + length; i++) { + if ((bytes[i] & 0xFF) == 0xFF && bytes[i + 1] == 0x00) { + int relativePosition = i - startPosition; + System.arraycopy(bytes, i + 2, bytes, i + 1, length - relativePosition - 2); + length--; + } + } + return length; + } + + /** + * Maps encoding byte from ID3v2 frame to a Charset. + * + * @param encodingByte The value of encoding byte from ID3v2 frame. + * @return Charset name. + */ + private static String getCharsetName(int encodingByte) { + switch (encodingByte) { + case ID3_TEXT_ENCODING_UTF_16: + return "UTF-16"; + case ID3_TEXT_ENCODING_UTF_16BE: + return "UTF-16BE"; + case ID3_TEXT_ENCODING_UTF_8: + return "UTF-8"; + case ID3_TEXT_ENCODING_ISO_8859_1: + default: + return "ISO-8859-1"; + } + } + + private static String getFrameId(int majorVersion, int frameId0, int frameId1, int frameId2, + int frameId3) { + return majorVersion == 2 ? String.format(Locale.US, "%c%c%c", frameId0, frameId1, frameId2) + : String.format(Locale.US, "%c%c%c%c", frameId0, frameId1, frameId2, frameId3); + } + + private static int indexOfEos(byte[] data, int fromIndex, int encoding) { + int terminationPos = indexOfZeroByte(data, fromIndex); + + // For single byte encoding charsets, we're done. + if (encoding == ID3_TEXT_ENCODING_ISO_8859_1 || encoding == ID3_TEXT_ENCODING_UTF_8) { + return terminationPos; + } + + // Otherwise ensure an even index and look for a second zero byte. + while (terminationPos < data.length - 1) { + if (terminationPos % 2 == 0 && data[terminationPos + 1] == (byte) 0) { + return terminationPos; + } + terminationPos = indexOfZeroByte(data, terminationPos + 1); + } + + return data.length; + } + + private static int indexOfZeroByte(byte[] data, int fromIndex) { + for (int i = fromIndex; i < data.length; i++) { + if (data[i] == (byte) 0) { + return i; + } + } + return data.length; + } + + private static int delimiterLength(int encodingByte) { + return (encodingByte == ID3_TEXT_ENCODING_ISO_8859_1 || encodingByte == ID3_TEXT_ENCODING_UTF_8) + ? 1 : 2; + } + + /** + * Copies the specified range of an array, or returns a zero length array if the range is invalid. + * + * @param data The array from which to copy. + * @param from The start of the range to copy (inclusive). + * @param to The end of the range to copy (exclusive). + * @return The copied data, or a zero length array if the range is invalid. + */ + private static byte[] copyOfRangeIfValid(byte[] data, int from, int to) { + if (to <= from) { + // Invalid or zero length range. + return Util.EMPTY_BYTE_ARRAY; + } + return Arrays.copyOfRange(data, from, to); + } + + /** + * Returns a string obtained by decoding the specified range of {@code data} using the specified + * {@code charsetName}. An empty string is returned if the range is invalid. + * + * @param data The array from which to decode the string. + * @param from The start of the range. + * @param to The end of the range (exclusive). + * @param charsetName The name of the Charset to use. + * @return The decoded string, or an empty string if the range is invalid. + * @throws UnsupportedEncodingException If the Charset is not supported. + */ + private static String decodeStringIfValid(byte[] data, int from, int to, String charsetName) + throws UnsupportedEncodingException { + if (to <= from || to > data.length) { + return ""; + } + return new String(data, from, to - from, charsetName); + } + + private static final class Id3Header { + + private final int majorVersion; + private final boolean isUnsynchronized; + private final int framesSize; + + public Id3Header(int majorVersion, boolean isUnsynchronized, int framesSize) { + this.majorVersion = majorVersion; + this.isUnsynchronized = isUnsynchronized; + this.framesSize = framesSize; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/Id3Frame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/Id3Frame.java new file mode 100644 index 0000000000..f96b5e752c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/Id3Frame.java @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; + +/** + * Base class for ID3 frames. + */ +public abstract class Id3Frame implements Metadata.Entry { + + /** + * The frame ID. + */ + public final String id; + + public Id3Frame(String id) { + this.id = id; + } + + @Override + public String toString() { + return id; + } + + @Override + public int describeContents() { + return 0; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/InternalFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/InternalFrame.java new file mode 100644 index 0000000000..ab8ccff343 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/InternalFrame.java @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** Internal ID3 frame that is intended for use by the player. */ +public final class InternalFrame extends Id3Frame { + + public static final String ID = "----"; + + public final String domain; + public final String description; + public final String text; + + public InternalFrame(String domain, String description, String text) { + super(ID); + this.domain = domain; + this.description = description; + this.text = text; + } + + /* package */ InternalFrame(Parcel in) { + super(ID); + domain = castNonNull(in.readString()); + description = castNonNull(in.readString()); + text = castNonNull(in.readString()); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + InternalFrame other = (InternalFrame) obj; + return Util.areEqual(description, other.description) + && Util.areEqual(domain, other.domain) + && Util.areEqual(text, other.text); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + (domain != null ? domain.hashCode() : 0); + result = 31 * result + (description != null ? description.hashCode() : 0); + result = 31 * result + (text != null ? text.hashCode() : 0); + return result; + } + + @Override + public String toString() { + return id + ": domain=" + domain + ", description=" + description; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(id); + dest.writeString(domain); + dest.writeString(text); + } + + public static final Creator CREATOR = + new Creator() { + + @Override + public InternalFrame createFromParcel(Parcel in) { + return new InternalFrame(in); + } + + @Override + public InternalFrame[] newArray(int size) { + return new InternalFrame[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/MlltFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/MlltFrame.java new file mode 100644 index 0000000000..441235d7c9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/MlltFrame.java @@ -0,0 +1,114 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import android.os.Parcel; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** MPEG location lookup table frame. */ +public final class MlltFrame extends Id3Frame { + + public static final String ID = "MLLT"; + + public final int mpegFramesBetweenReference; + public final int bytesBetweenReference; + public final int millisecondsBetweenReference; + public final int[] bytesDeviations; + public final int[] millisecondsDeviations; + + public MlltFrame( + int mpegFramesBetweenReference, + int bytesBetweenReference, + int millisecondsBetweenReference, + int[] bytesDeviations, + int[] millisecondsDeviations) { + super(ID); + this.mpegFramesBetweenReference = mpegFramesBetweenReference; + this.bytesBetweenReference = bytesBetweenReference; + this.millisecondsBetweenReference = millisecondsBetweenReference; + this.bytesDeviations = bytesDeviations; + this.millisecondsDeviations = millisecondsDeviations; + } + + /* package */ + MlltFrame(Parcel in) { + super(ID); + this.mpegFramesBetweenReference = in.readInt(); + this.bytesBetweenReference = in.readInt(); + this.millisecondsBetweenReference = in.readInt(); + this.bytesDeviations = Util.castNonNull(in.createIntArray()); + this.millisecondsDeviations = Util.castNonNull(in.createIntArray()); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + MlltFrame other = (MlltFrame) obj; + return mpegFramesBetweenReference == other.mpegFramesBetweenReference + && bytesBetweenReference == other.bytesBetweenReference + && millisecondsBetweenReference == other.millisecondsBetweenReference + && Arrays.equals(bytesDeviations, other.bytesDeviations) + && Arrays.equals(millisecondsDeviations, other.millisecondsDeviations); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + mpegFramesBetweenReference; + result = 31 * result + bytesBetweenReference; + result = 31 * result + millisecondsBetweenReference; + result = 31 * result + Arrays.hashCode(bytesDeviations); + result = 31 * result + Arrays.hashCode(millisecondsDeviations); + return result; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeInt(mpegFramesBetweenReference); + dest.writeInt(bytesBetweenReference); + dest.writeInt(millisecondsBetweenReference); + dest.writeIntArray(bytesDeviations); + dest.writeIntArray(millisecondsDeviations); + } + + @Override + public int describeContents() { + return 0; + } + + public static final Creator CREATOR = + new Creator() { + + @Override + public MlltFrame createFromParcel(Parcel in) { + return new MlltFrame(in); + } + + @Override + public MlltFrame[] newArray(int size) { + return new MlltFrame[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/PrivFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/PrivFrame.java new file mode 100644 index 0000000000..248d9996dd --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/PrivFrame.java @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** + * PRIV (Private) ID3 frame. + */ +public final class PrivFrame extends Id3Frame { + + public static final String ID = "PRIV"; + + public final String owner; + public final byte[] privateData; + + public PrivFrame(String owner, byte[] privateData) { + super(ID); + this.owner = owner; + this.privateData = privateData; + } + + /* package */ PrivFrame(Parcel in) { + super(ID); + owner = castNonNull(in.readString()); + privateData = castNonNull(in.createByteArray()); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + PrivFrame other = (PrivFrame) obj; + return Util.areEqual(owner, other.owner) && Arrays.equals(privateData, other.privateData); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + (owner != null ? owner.hashCode() : 0); + result = 31 * result + Arrays.hashCode(privateData); + return result; + } + + @Override + public String toString() { + return id + ": owner=" + owner; + } + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(owner); + dest.writeByteArray(privateData); + } + + public static final Parcelable.Creator CREATOR = new Parcelable.Creator() { + + @Override + public PrivFrame createFromParcel(Parcel in) { + return new PrivFrame(in); + } + + @Override + public PrivFrame[] newArray(int size) { + return new PrivFrame[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/TextInformationFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/TextInformationFrame.java new file mode 100644 index 0000000000..c0bd36ccf7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/TextInformationFrame.java @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Text information ID3 frame. + */ +public final class TextInformationFrame extends Id3Frame { + + @Nullable public final String description; + public final String value; + + public TextInformationFrame(String id, @Nullable String description, String value) { + super(id); + this.description = description; + this.value = value; + } + + /* package */ TextInformationFrame(Parcel in) { + super(castNonNull(in.readString())); + description = in.readString(); + value = castNonNull(in.readString()); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + TextInformationFrame other = (TextInformationFrame) obj; + return id.equals(other.id) && Util.areEqual(description, other.description) + && Util.areEqual(value, other.value); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + id.hashCode(); + result = 31 * result + (description != null ? description.hashCode() : 0); + result = 31 * result + (value != null ? value.hashCode() : 0); + return result; + } + + @Override + public String toString() { + return id + ": description=" + description + ": value=" + value; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(id); + dest.writeString(description); + dest.writeString(value); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public TextInformationFrame createFromParcel(Parcel in) { + return new TextInformationFrame(in); + } + + @Override + public TextInformationFrame[] newArray(int size) { + return new TextInformationFrame[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/UrlLinkFrame.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/UrlLinkFrame.java new file mode 100644 index 0000000000..ced474960e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/UrlLinkFrame.java @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Url link ID3 frame. + */ +public final class UrlLinkFrame extends Id3Frame { + + @Nullable public final String description; + public final String url; + + public UrlLinkFrame(String id, @Nullable String description, String url) { + super(id); + this.description = description; + this.url = url; + } + + /* package */ UrlLinkFrame(Parcel in) { + super(castNonNull(in.readString())); + description = in.readString(); + url = castNonNull(in.readString()); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + UrlLinkFrame other = (UrlLinkFrame) obj; + return id.equals(other.id) && Util.areEqual(description, other.description) + && Util.areEqual(url, other.url); + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + id.hashCode(); + result = 31 * result + (description != null ? description.hashCode() : 0); + result = 31 * result + (url != null ? url.hashCode() : 0); + return result; + } + + @Override + public String toString() { + return id + ": url=" + url; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(id); + dest.writeString(description); + dest.writeString(url); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public UrlLinkFrame createFromParcel(Parcel in) { + return new UrlLinkFrame(in); + } + + @Override + public UrlLinkFrame[] newArray(int size) { + return new UrlLinkFrame[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/package-info.java new file mode 100644 index 0000000000..87b20161df --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/id3/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/package-info.java new file mode 100644 index 0000000000..e5775f7acc --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/PrivateCommand.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/PrivateCommand.java new file mode 100644 index 0000000000..3437c8dd73 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/PrivateCommand.java @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.scte35; + +import android.os.Parcel; +import android.os.Parcelable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Represents a private command as defined in SCTE35, Section 9.3.6. + */ +public final class PrivateCommand extends SpliceCommand { + + /** + * The {@code pts_adjustment} as defined in SCTE35, Section 9.2. + */ + public final long ptsAdjustment; + /** + * The identifier as defined in SCTE35, Section 9.3.6. + */ + public final long identifier; + /** + * The private bytes as defined in SCTE35, Section 9.3.6. + */ + public final byte[] commandBytes; + + private PrivateCommand(long identifier, byte[] commandBytes, long ptsAdjustment) { + this.ptsAdjustment = ptsAdjustment; + this.identifier = identifier; + this.commandBytes = commandBytes; + } + + private PrivateCommand(Parcel in) { + ptsAdjustment = in.readLong(); + identifier = in.readLong(); + commandBytes = Util.castNonNull(in.createByteArray()); + } + + /* package */ static PrivateCommand parseFromSection(ParsableByteArray sectionData, + int commandLength, long ptsAdjustment) { + long identifier = sectionData.readUnsignedInt(); + byte[] privateBytes = new byte[commandLength - 4 /* identifier size */]; + sectionData.readBytes(privateBytes, 0, privateBytes.length); + return new PrivateCommand(identifier, privateBytes, ptsAdjustment); + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeLong(ptsAdjustment); + dest.writeLong(identifier); + dest.writeByteArray(commandBytes); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public PrivateCommand createFromParcel(Parcel in) { + return new PrivateCommand(in); + } + + @Override + public PrivateCommand[] newArray(int size) { + return new PrivateCommand[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceCommand.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceCommand.java new file mode 100644 index 0000000000..866a7ec8bc --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceCommand.java @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.scte35; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; + +/** + * Superclass for SCTE35 splice commands. + */ +public abstract class SpliceCommand implements Metadata.Entry { + + @Override + public String toString() { + return "SCTE-35 splice command: type=" + getClass().getSimpleName(); + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceInfoDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceInfoDecoder.java new file mode 100644 index 0000000000..a90bddb078 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceInfoDecoder.java @@ -0,0 +1,102 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.scte35; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.MetadataInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import java.nio.ByteBuffer; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * Decodes splice info sections and produces splice commands. + */ +public final class SpliceInfoDecoder implements MetadataDecoder { + + private static final int TYPE_SPLICE_NULL = 0x00; + private static final int TYPE_SPLICE_SCHEDULE = 0x04; + private static final int TYPE_SPLICE_INSERT = 0x05; + private static final int TYPE_TIME_SIGNAL = 0x06; + private static final int TYPE_PRIVATE_COMMAND = 0xFF; + + private final ParsableByteArray sectionData; + private final ParsableBitArray sectionHeader; + + @MonotonicNonNull private TimestampAdjuster timestampAdjuster; + + public SpliceInfoDecoder() { + sectionData = new ParsableByteArray(); + sectionHeader = new ParsableBitArray(); + } + + @SuppressWarnings("ByteBufferBackingArray") + @Override + public Metadata decode(MetadataInputBuffer inputBuffer) { + ByteBuffer buffer = Assertions.checkNotNull(inputBuffer.data); + + // Internal timestamps adjustment. + if (timestampAdjuster == null + || inputBuffer.subsampleOffsetUs != timestampAdjuster.getTimestampOffsetUs()) { + timestampAdjuster = new TimestampAdjuster(inputBuffer.timeUs); + timestampAdjuster.adjustSampleTimestamp(inputBuffer.timeUs - inputBuffer.subsampleOffsetUs); + } + + byte[] data = buffer.array(); + int size = buffer.limit(); + sectionData.reset(data, size); + sectionHeader.reset(data, size); + // table_id(8), section_syntax_indicator(1), private_indicator(1), reserved(2), + // section_length(12), protocol_version(8), encrypted_packet(1), encryption_algorithm(6). + sectionHeader.skipBits(39); + long ptsAdjustment = sectionHeader.readBits(1); + ptsAdjustment = (ptsAdjustment << 32) | sectionHeader.readBits(32); + // cw_index(8), tier(12). + sectionHeader.skipBits(20); + int spliceCommandLength = sectionHeader.readBits(12); + int spliceCommandType = sectionHeader.readBits(8); + @Nullable SpliceCommand command = null; + // Go to the start of the command by skipping all fields up to command_type. + sectionData.skipBytes(14); + switch (spliceCommandType) { + case TYPE_SPLICE_NULL: + command = new SpliceNullCommand(); + break; + case TYPE_SPLICE_SCHEDULE: + command = SpliceScheduleCommand.parseFromSection(sectionData); + break; + case TYPE_SPLICE_INSERT: + command = SpliceInsertCommand.parseFromSection(sectionData, ptsAdjustment, + timestampAdjuster); + break; + case TYPE_TIME_SIGNAL: + command = TimeSignalCommand.parseFromSection(sectionData, ptsAdjustment, timestampAdjuster); + break; + case TYPE_PRIVATE_COMMAND: + command = PrivateCommand.parseFromSection(sectionData, spliceCommandLength, ptsAdjustment); + break; + default: + // Do nothing. + break; + } + return command == null ? new Metadata() : new Metadata(command); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceInsertCommand.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceInsertCommand.java new file mode 100644 index 0000000000..5993efb10f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceInsertCommand.java @@ -0,0 +1,254 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.scte35; + +import android.os.Parcel; +import android.os.Parcelable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** + * Represents a splice insert command defined in SCTE35, Section 9.3.3. + */ +public final class SpliceInsertCommand extends SpliceCommand { + + /** + * The splice event id. + */ + public final long spliceEventId; + /** + * True if the event with id {@link #spliceEventId} has been canceled. + */ + public final boolean spliceEventCancelIndicator; + /** + * If true, the splice event is an opportunity to exit from the network feed. If false, indicates + * an opportunity to return to the network feed. + */ + public final boolean outOfNetworkIndicator; + /** + * Whether the splice mode is program splice mode, whereby all PIDs/components are to be spliced. + * If false, splicing is done per PID/component. + */ + public final boolean programSpliceFlag; + /** + * Whether splicing should be done at the nearest opportunity. If false, splicing should be done + * at the moment indicated by {@link #programSplicePlaybackPositionUs} or + * {@link ComponentSplice#componentSplicePlaybackPositionUs}, depending on + * {@link #programSpliceFlag}. + */ + public final boolean spliceImmediateFlag; + /** + * If {@link #programSpliceFlag} is true, the PTS at which the program splice should occur. + * {@link C#TIME_UNSET} otherwise. + */ + public final long programSplicePts; + /** + * Equivalent to {@link #programSplicePts} but in the playback timebase. + */ + public final long programSplicePlaybackPositionUs; + /** + * If {@link #programSpliceFlag} is false, a non-empty list containing the + * {@link ComponentSplice}s. Otherwise, an empty list. + */ + public final List componentSpliceList; + /** + * If {@link #breakDurationUs} is not {@link C#TIME_UNSET}, defines whether + * {@link #breakDurationUs} should be used to know when to return to the network feed. If + * {@link #breakDurationUs} is {@link C#TIME_UNSET}, the value is undefined. + */ + public final boolean autoReturn; + /** + * The duration of the splice in microseconds, or {@link C#TIME_UNSET} if no duration is present. + */ + public final long breakDurationUs; + /** + * The unique program id as defined in SCTE35, Section 9.3.3. + */ + public final int uniqueProgramId; + /** + * Holds the value of {@code avail_num} as defined in SCTE35, Section 9.3.3. + */ + public final int availNum; + /** + * Holds the value of {@code avails_expected} as defined in SCTE35, Section 9.3.3. + */ + public final int availsExpected; + + private SpliceInsertCommand(long spliceEventId, boolean spliceEventCancelIndicator, + boolean outOfNetworkIndicator, boolean programSpliceFlag, boolean spliceImmediateFlag, + long programSplicePts, long programSplicePlaybackPositionUs, + List componentSpliceList, boolean autoReturn, long breakDurationUs, + int uniqueProgramId, int availNum, int availsExpected) { + this.spliceEventId = spliceEventId; + this.spliceEventCancelIndicator = spliceEventCancelIndicator; + this.outOfNetworkIndicator = outOfNetworkIndicator; + this.programSpliceFlag = programSpliceFlag; + this.spliceImmediateFlag = spliceImmediateFlag; + this.programSplicePts = programSplicePts; + this.programSplicePlaybackPositionUs = programSplicePlaybackPositionUs; + this.componentSpliceList = Collections.unmodifiableList(componentSpliceList); + this.autoReturn = autoReturn; + this.breakDurationUs = breakDurationUs; + this.uniqueProgramId = uniqueProgramId; + this.availNum = availNum; + this.availsExpected = availsExpected; + } + + private SpliceInsertCommand(Parcel in) { + spliceEventId = in.readLong(); + spliceEventCancelIndicator = in.readByte() == 1; + outOfNetworkIndicator = in.readByte() == 1; + programSpliceFlag = in.readByte() == 1; + spliceImmediateFlag = in.readByte() == 1; + programSplicePts = in.readLong(); + programSplicePlaybackPositionUs = in.readLong(); + int componentSpliceListSize = in.readInt(); + List componentSpliceList = new ArrayList<>(componentSpliceListSize); + for (int i = 0; i < componentSpliceListSize; i++) { + componentSpliceList.add(ComponentSplice.createFromParcel(in)); + } + this.componentSpliceList = Collections.unmodifiableList(componentSpliceList); + autoReturn = in.readByte() == 1; + breakDurationUs = in.readLong(); + uniqueProgramId = in.readInt(); + availNum = in.readInt(); + availsExpected = in.readInt(); + } + + /* package */ static SpliceInsertCommand parseFromSection(ParsableByteArray sectionData, + long ptsAdjustment, TimestampAdjuster timestampAdjuster) { + long spliceEventId = sectionData.readUnsignedInt(); + // splice_event_cancel_indicator(1), reserved(7). + boolean spliceEventCancelIndicator = (sectionData.readUnsignedByte() & 0x80) != 0; + boolean outOfNetworkIndicator = false; + boolean programSpliceFlag = false; + boolean spliceImmediateFlag = false; + long programSplicePts = C.TIME_UNSET; + List componentSplices = Collections.emptyList(); + int uniqueProgramId = 0; + int availNum = 0; + int availsExpected = 0; + boolean autoReturn = false; + long breakDurationUs = C.TIME_UNSET; + if (!spliceEventCancelIndicator) { + int headerByte = sectionData.readUnsignedByte(); + outOfNetworkIndicator = (headerByte & 0x80) != 0; + programSpliceFlag = (headerByte & 0x40) != 0; + boolean durationFlag = (headerByte & 0x20) != 0; + spliceImmediateFlag = (headerByte & 0x10) != 0; + if (programSpliceFlag && !spliceImmediateFlag) { + programSplicePts = TimeSignalCommand.parseSpliceTime(sectionData, ptsAdjustment); + } + if (!programSpliceFlag) { + int componentCount = sectionData.readUnsignedByte(); + componentSplices = new ArrayList<>(componentCount); + for (int i = 0; i < componentCount; i++) { + int componentTag = sectionData.readUnsignedByte(); + long componentSplicePts = C.TIME_UNSET; + if (!spliceImmediateFlag) { + componentSplicePts = TimeSignalCommand.parseSpliceTime(sectionData, ptsAdjustment); + } + componentSplices.add(new ComponentSplice(componentTag, componentSplicePts, + timestampAdjuster.adjustTsTimestamp(componentSplicePts))); + } + } + if (durationFlag) { + long firstByte = sectionData.readUnsignedByte(); + autoReturn = (firstByte & 0x80) != 0; + long breakDuration90khz = ((firstByte & 0x01) << 32) | sectionData.readUnsignedInt(); + breakDurationUs = breakDuration90khz * 1000 / 90; + } + uniqueProgramId = sectionData.readUnsignedShort(); + availNum = sectionData.readUnsignedByte(); + availsExpected = sectionData.readUnsignedByte(); + } + return new SpliceInsertCommand(spliceEventId, spliceEventCancelIndicator, outOfNetworkIndicator, + programSpliceFlag, spliceImmediateFlag, programSplicePts, + timestampAdjuster.adjustTsTimestamp(programSplicePts), componentSplices, autoReturn, + breakDurationUs, uniqueProgramId, availNum, availsExpected); + } + + /** + * Holds splicing information for specific splice insert command components. + */ + public static final class ComponentSplice { + + public final int componentTag; + public final long componentSplicePts; + public final long componentSplicePlaybackPositionUs; + + private ComponentSplice(int componentTag, long componentSplicePts, + long componentSplicePlaybackPositionUs) { + this.componentTag = componentTag; + this.componentSplicePts = componentSplicePts; + this.componentSplicePlaybackPositionUs = componentSplicePlaybackPositionUs; + } + + public void writeToParcel(Parcel dest) { + dest.writeInt(componentTag); + dest.writeLong(componentSplicePts); + dest.writeLong(componentSplicePlaybackPositionUs); + } + + public static ComponentSplice createFromParcel(Parcel in) { + return new ComponentSplice(in.readInt(), in.readLong(), in.readLong()); + } + + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeLong(spliceEventId); + dest.writeByte((byte) (spliceEventCancelIndicator ? 1 : 0)); + dest.writeByte((byte) (outOfNetworkIndicator ? 1 : 0)); + dest.writeByte((byte) (programSpliceFlag ? 1 : 0)); + dest.writeByte((byte) (spliceImmediateFlag ? 1 : 0)); + dest.writeLong(programSplicePts); + dest.writeLong(programSplicePlaybackPositionUs); + int componentSpliceListSize = componentSpliceList.size(); + dest.writeInt(componentSpliceListSize); + for (int i = 0; i < componentSpliceListSize; i++) { + componentSpliceList.get(i).writeToParcel(dest); + } + dest.writeByte((byte) (autoReturn ? 1 : 0)); + dest.writeLong(breakDurationUs); + dest.writeInt(uniqueProgramId); + dest.writeInt(availNum); + dest.writeInt(availsExpected); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public SpliceInsertCommand createFromParcel(Parcel in) { + return new SpliceInsertCommand(in); + } + + @Override + public SpliceInsertCommand[] newArray(int size) { + return new SpliceInsertCommand[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceNullCommand.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceNullCommand.java new file mode 100644 index 0000000000..afc88bbeab --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceNullCommand.java @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.scte35; + +import android.os.Parcel; + +/** + * Represents a splice null command as defined in SCTE35, Section 9.3.1. + */ +public final class SpliceNullCommand extends SpliceCommand { + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + // Do nothing. + } + + public static final Creator CREATOR = + new Creator() { + + @Override + public SpliceNullCommand createFromParcel(Parcel in) { + return new SpliceNullCommand(); + } + + @Override + public SpliceNullCommand[] newArray(int size) { + return new SpliceNullCommand[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceScheduleCommand.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceScheduleCommand.java new file mode 100644 index 0000000000..e1d369bc87 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/SpliceScheduleCommand.java @@ -0,0 +1,270 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.scte35; + +import android.os.Parcel; +import android.os.Parcelable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** + * Represents a splice schedule command as defined in SCTE35, Section 9.3.2. + */ +public final class SpliceScheduleCommand extends SpliceCommand { + + /** + * Represents a splice event as contained in a {@link SpliceScheduleCommand}. + */ + public static final class Event { + + /** + * The splice event id. + */ + public final long spliceEventId; + /** + * True if the event with id {@link #spliceEventId} has been canceled. + */ + public final boolean spliceEventCancelIndicator; + /** + * If true, the splice event is an opportunity to exit from the network feed. If false, + * indicates an opportunity to return to the network feed. + */ + public final boolean outOfNetworkIndicator; + /** + * Whether the splice mode is program splice mode, whereby all PIDs/components are to be + * spliced. If false, splicing is done per PID/component. + */ + public final boolean programSpliceFlag; + /** + * Represents the time of the signaled splice event as the number of seconds since 00 hours UTC, + * January 6th, 1980, with the count of intervening leap seconds included. + */ + public final long utcSpliceTime; + /** + * If {@link #programSpliceFlag} is false, a non-empty list containing the + * {@link ComponentSplice}s. Otherwise, an empty list. + */ + public final List componentSpliceList; + /** + * If {@link #breakDurationUs} is not {@link C#TIME_UNSET}, defines whether + * {@link #breakDurationUs} should be used to know when to return to the network feed. If + * {@link #breakDurationUs} is {@link C#TIME_UNSET}, the value is undefined. + */ + public final boolean autoReturn; + /** + * The duration of the splice in microseconds, or {@link C#TIME_UNSET} if no duration is + * present. + */ + public final long breakDurationUs; + /** + * The unique program id as defined in SCTE35, Section 9.3.2. + */ + public final int uniqueProgramId; + /** + * Holds the value of {@code avail_num} as defined in SCTE35, Section 9.3.2. + */ + public final int availNum; + /** + * Holds the value of {@code avails_expected} as defined in SCTE35, Section 9.3.2. + */ + public final int availsExpected; + + private Event(long spliceEventId, boolean spliceEventCancelIndicator, + boolean outOfNetworkIndicator, boolean programSpliceFlag, + List componentSpliceList, long utcSpliceTime, boolean autoReturn, + long breakDurationUs, int uniqueProgramId, int availNum, int availsExpected) { + this.spliceEventId = spliceEventId; + this.spliceEventCancelIndicator = spliceEventCancelIndicator; + this.outOfNetworkIndicator = outOfNetworkIndicator; + this.programSpliceFlag = programSpliceFlag; + this.componentSpliceList = Collections.unmodifiableList(componentSpliceList); + this.utcSpliceTime = utcSpliceTime; + this.autoReturn = autoReturn; + this.breakDurationUs = breakDurationUs; + this.uniqueProgramId = uniqueProgramId; + this.availNum = availNum; + this.availsExpected = availsExpected; + } + + private Event(Parcel in) { + this.spliceEventId = in.readLong(); + this.spliceEventCancelIndicator = in.readByte() == 1; + this.outOfNetworkIndicator = in.readByte() == 1; + this.programSpliceFlag = in.readByte() == 1; + int componentSpliceListLength = in.readInt(); + ArrayList componentSpliceList = new ArrayList<>(componentSpliceListLength); + for (int i = 0; i < componentSpliceListLength; i++) { + componentSpliceList.add(ComponentSplice.createFromParcel(in)); + } + this.componentSpliceList = Collections.unmodifiableList(componentSpliceList); + this.utcSpliceTime = in.readLong(); + this.autoReturn = in.readByte() == 1; + this.breakDurationUs = in.readLong(); + this.uniqueProgramId = in.readInt(); + this.availNum = in.readInt(); + this.availsExpected = in.readInt(); + } + + private static Event parseFromSection(ParsableByteArray sectionData) { + long spliceEventId = sectionData.readUnsignedInt(); + // splice_event_cancel_indicator(1), reserved(7). + boolean spliceEventCancelIndicator = (sectionData.readUnsignedByte() & 0x80) != 0; + boolean outOfNetworkIndicator = false; + boolean programSpliceFlag = false; + long utcSpliceTime = C.TIME_UNSET; + ArrayList componentSplices = new ArrayList<>(); + int uniqueProgramId = 0; + int availNum = 0; + int availsExpected = 0; + boolean autoReturn = false; + long breakDurationUs = C.TIME_UNSET; + if (!spliceEventCancelIndicator) { + int headerByte = sectionData.readUnsignedByte(); + outOfNetworkIndicator = (headerByte & 0x80) != 0; + programSpliceFlag = (headerByte & 0x40) != 0; + boolean durationFlag = (headerByte & 0x20) != 0; + if (programSpliceFlag) { + utcSpliceTime = sectionData.readUnsignedInt(); + } + if (!programSpliceFlag) { + int componentCount = sectionData.readUnsignedByte(); + componentSplices = new ArrayList<>(componentCount); + for (int i = 0; i < componentCount; i++) { + int componentTag = sectionData.readUnsignedByte(); + long componentUtcSpliceTime = sectionData.readUnsignedInt(); + componentSplices.add(new ComponentSplice(componentTag, componentUtcSpliceTime)); + } + } + if (durationFlag) { + long firstByte = sectionData.readUnsignedByte(); + autoReturn = (firstByte & 0x80) != 0; + long breakDuration90khz = ((firstByte & 0x01) << 32) | sectionData.readUnsignedInt(); + breakDurationUs = breakDuration90khz * 1000 / 90; + } + uniqueProgramId = sectionData.readUnsignedShort(); + availNum = sectionData.readUnsignedByte(); + availsExpected = sectionData.readUnsignedByte(); + } + return new Event(spliceEventId, spliceEventCancelIndicator, outOfNetworkIndicator, + programSpliceFlag, componentSplices, utcSpliceTime, autoReturn, breakDurationUs, + uniqueProgramId, availNum, availsExpected); + } + + private void writeToParcel(Parcel dest) { + dest.writeLong(spliceEventId); + dest.writeByte((byte) (spliceEventCancelIndicator ? 1 : 0)); + dest.writeByte((byte) (outOfNetworkIndicator ? 1 : 0)); + dest.writeByte((byte) (programSpliceFlag ? 1 : 0)); + int componentSpliceListSize = componentSpliceList.size(); + dest.writeInt(componentSpliceListSize); + for (int i = 0; i < componentSpliceListSize; i++) { + componentSpliceList.get(i).writeToParcel(dest); + } + dest.writeLong(utcSpliceTime); + dest.writeByte((byte) (autoReturn ? 1 : 0)); + dest.writeLong(breakDurationUs); + dest.writeInt(uniqueProgramId); + dest.writeInt(availNum); + dest.writeInt(availsExpected); + } + + private static Event createFromParcel(Parcel in) { + return new Event(in); + } + + } + + /** + * Holds splicing information for specific splice schedule command components. + */ + public static final class ComponentSplice { + + public final int componentTag; + public final long utcSpliceTime; + + private ComponentSplice(int componentTag, long utcSpliceTime) { + this.componentTag = componentTag; + this.utcSpliceTime = utcSpliceTime; + } + + private static ComponentSplice createFromParcel(Parcel in) { + return new ComponentSplice(in.readInt(), in.readLong()); + } + + private void writeToParcel(Parcel dest) { + dest.writeInt(componentTag); + dest.writeLong(utcSpliceTime); + } + + } + + /** + * The list of scheduled events. + */ + public final List events; + + private SpliceScheduleCommand(List events) { + this.events = Collections.unmodifiableList(events); + } + + private SpliceScheduleCommand(Parcel in) { + int eventsSize = in.readInt(); + ArrayList events = new ArrayList<>(eventsSize); + for (int i = 0; i < eventsSize; i++) { + events.add(Event.createFromParcel(in)); + } + this.events = Collections.unmodifiableList(events); + } + + /* package */ static SpliceScheduleCommand parseFromSection(ParsableByteArray sectionData) { + int spliceCount = sectionData.readUnsignedByte(); + ArrayList events = new ArrayList<>(spliceCount); + for (int i = 0; i < spliceCount; i++) { + events.add(Event.parseFromSection(sectionData)); + } + return new SpliceScheduleCommand(events); + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + int eventsSize = events.size(); + dest.writeInt(eventsSize); + for (int i = 0; i < eventsSize; i++) { + events.get(i).writeToParcel(dest); + } + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public SpliceScheduleCommand createFromParcel(Parcel in) { + return new SpliceScheduleCommand(in); + } + + @Override + public SpliceScheduleCommand[] newArray(int size) { + return new SpliceScheduleCommand[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/TimeSignalCommand.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/TimeSignalCommand.java new file mode 100644 index 0000000000..f50a029f1b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/TimeSignalCommand.java @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.scte35; + +import android.os.Parcel; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; + +/** + * Represents a time signal command as defined in SCTE35, Section 9.3.4. + */ +public final class TimeSignalCommand extends SpliceCommand { + + /** + * A PTS value, as defined in SCTE35, Section 9.3.4. + */ + public final long ptsTime; + /** + * Equivalent to {@link #ptsTime} but in the playback timebase. + */ + public final long playbackPositionUs; + + private TimeSignalCommand(long ptsTime, long playbackPositionUs) { + this.ptsTime = ptsTime; + this.playbackPositionUs = playbackPositionUs; + } + + /* package */ static TimeSignalCommand parseFromSection(ParsableByteArray sectionData, + long ptsAdjustment, TimestampAdjuster timestampAdjuster) { + long ptsTime = parseSpliceTime(sectionData, ptsAdjustment); + long playbackPositionUs = timestampAdjuster.adjustTsTimestamp(ptsTime); + return new TimeSignalCommand(ptsTime, playbackPositionUs); + } + + /** + * Parses pts_time from splice_time(), defined in Section 9.4.1. Returns {@link C#TIME_UNSET}, if + * time_specified_flag is false. + * + * @param sectionData The section data from which the pts_time is parsed. + * @param ptsAdjustment The pts adjustment provided by the splice info section header. + * @return The pts_time defined by splice_time(), or {@link C#TIME_UNSET}, if time_specified_flag + * is false. + */ + /* package */ static long parseSpliceTime(ParsableByteArray sectionData, long ptsAdjustment) { + long firstByte = sectionData.readUnsignedByte(); + long ptsTime = C.TIME_UNSET; + if ((firstByte & 0x80) != 0 /* time_specified_flag */) { + // See SCTE35 9.2.1 for more information about pts adjustment. + ptsTime = (firstByte & 0x01) << 32 | sectionData.readUnsignedInt(); + ptsTime += ptsAdjustment; + ptsTime &= 0x1FFFFFFFFL; + } + return ptsTime; + } + + // Parcelable implementation. + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeLong(ptsTime); + dest.writeLong(playbackPositionUs); + } + + public static final Creator CREATOR = + new Creator() { + + @Override + public TimeSignalCommand createFromParcel(Parcel in) { + return new TimeSignalCommand(in.readLong(), in.readLong()); + } + + @Override + public TimeSignalCommand[] newArray(int size) { + return new TimeSignalCommand[size]; + } + + }; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/package-info.java new file mode 100644 index 0000000000..17ce76bb9f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/metadata/scte35/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.scte35; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/ActionFile.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/ActionFile.java new file mode 100644 index 0000000000..5451ea5530 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/ActionFile.java @@ -0,0 +1,164 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.DownloadRequest.UnsupportedRequestException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.AtomicFile; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.DataInputStream; +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.util.ArrayList; +import java.util.List; + +/** + * Loads {@link DownloadRequest DownloadRequests} from legacy action files. + * + * @deprecated Legacy action files should be merged into download indices using {@link + * ActionFileUpgradeUtil}. + */ +@Deprecated +/* package */ final class ActionFile { + + private static final int VERSION = 0; + + private final AtomicFile atomicFile; + + /** + * @param actionFile The file from which {@link DownloadRequest DownloadRequests} will be loaded. + */ + public ActionFile(File actionFile) { + atomicFile = new AtomicFile(actionFile); + } + + /** Returns whether the file or its backup exists. */ + public boolean exists() { + return atomicFile.exists(); + } + + /** Deletes the action file and its backup. */ + public void delete() { + atomicFile.delete(); + } + + /** + * Loads {@link DownloadRequest DownloadRequests} from the file. + * + * @return The loaded {@link DownloadRequest DownloadRequests}, or an empty array if the file does + * not exist. + * @throws IOException If there is an error reading the file. + */ + public DownloadRequest[] load() throws IOException { + if (!exists()) { + return new DownloadRequest[0]; + } + @Nullable InputStream inputStream = null; + try { + inputStream = atomicFile.openRead(); + DataInputStream dataInputStream = new DataInputStream(inputStream); + int version = dataInputStream.readInt(); + if (version > VERSION) { + throw new IOException("Unsupported action file version: " + version); + } + int actionCount = dataInputStream.readInt(); + ArrayList actions = new ArrayList<>(); + for (int i = 0; i < actionCount; i++) { + try { + actions.add(readDownloadRequest(dataInputStream)); + } catch (UnsupportedRequestException e) { + // remove DownloadRequest is not supported. Ignore and continue loading rest. + } + } + return actions.toArray(new DownloadRequest[0]); + } finally { + Util.closeQuietly(inputStream); + } + } + + private static DownloadRequest readDownloadRequest(DataInputStream input) throws IOException { + String type = input.readUTF(); + int version = input.readInt(); + + Uri uri = Uri.parse(input.readUTF()); + boolean isRemoveAction = input.readBoolean(); + + int dataLength = input.readInt(); + @Nullable byte[] data; + if (dataLength != 0) { + data = new byte[dataLength]; + input.readFully(data); + } else { + data = null; + } + + // Serialized version 0 progressive actions did not contain keys. + boolean isLegacyProgressive = version == 0 && DownloadRequest.TYPE_PROGRESSIVE.equals(type); + List keys = new ArrayList<>(); + if (!isLegacyProgressive) { + int keyCount = input.readInt(); + for (int i = 0; i < keyCount; i++) { + keys.add(readKey(type, version, input)); + } + } + + // Serialized version 0 and 1 DASH/HLS/SS actions did not contain a custom cache key. + boolean isLegacySegmented = + version < 2 + && (DownloadRequest.TYPE_DASH.equals(type) + || DownloadRequest.TYPE_HLS.equals(type) + || DownloadRequest.TYPE_SS.equals(type)); + @Nullable String customCacheKey = null; + if (!isLegacySegmented) { + customCacheKey = input.readBoolean() ? input.readUTF() : null; + } + + // Serialized version 0, 1 and 2 did not contain an id. We need to generate one. + String id = version < 3 ? generateDownloadId(uri, customCacheKey) : input.readUTF(); + + if (isRemoveAction) { + // Remove actions are not supported anymore. + throw new UnsupportedRequestException(); + } + return new DownloadRequest(id, type, uri, keys, customCacheKey, data); + } + + private static StreamKey readKey(String type, int version, DataInputStream input) + throws IOException { + int periodIndex; + int groupIndex; + int trackIndex; + + // Serialized version 0 HLS/SS actions did not contain a period index. + if ((DownloadRequest.TYPE_HLS.equals(type) || DownloadRequest.TYPE_SS.equals(type)) + && version == 0) { + periodIndex = 0; + groupIndex = input.readInt(); + trackIndex = input.readInt(); + } else { + periodIndex = input.readInt(); + groupIndex = input.readInt(); + trackIndex = input.readInt(); + } + return new StreamKey(periodIndex, groupIndex, trackIndex); + } + + private static String generateDownloadId(Uri uri, @Nullable String customCacheKey) { + return customCacheKey != null ? customCacheKey : uri.toString(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/ActionFileUpgradeUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/ActionFileUpgradeUtil.java new file mode 100644 index 0000000000..aa66c73e6b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/ActionFileUpgradeUtil.java @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.STATE_QUEUED; + +import androidx.annotation.Nullable; +import androidx.annotation.WorkerThread; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.File; +import java.io.IOException; + +/** Utility class for upgrading legacy action files into {@link DefaultDownloadIndex}. */ +public final class ActionFileUpgradeUtil { + + /** Provides download IDs during action file upgrade. */ + public interface DownloadIdProvider { + + /** + * Returns a download id for given request. + * + * @param downloadRequest The request for which an ID is required. + * @return A corresponding download ID. + */ + String getId(DownloadRequest downloadRequest); + } + + private ActionFileUpgradeUtil() {} + + /** + * Merges {@link DownloadRequest DownloadRequests} contained in a legacy action file into a {@link + * DefaultDownloadIndex}, deleting the action file if the merge is successful or if {@code + * deleteOnFailure} is {@code true}. + * + *

This method must not be called while the {@link DefaultDownloadIndex} is being used by a + * {@link DownloadManager}. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param actionFilePath The action file path. + * @param downloadIdProvider A download ID provider, or {@code null}. If {@code null} then ID of + * each download will be its custom cache key if one is specified, or else its URL. + * @param downloadIndex The index into which the requests will be merged. + * @param deleteOnFailure Whether to delete the action file if the merge fails. + * @param addNewDownloadsAsCompleted Whether to add new downloads as completed. + * @throws IOException If an error occurs loading or merging the requests. + */ + @WorkerThread + @SuppressWarnings("deprecation") + public static void upgradeAndDelete( + File actionFilePath, + @Nullable DownloadIdProvider downloadIdProvider, + DefaultDownloadIndex downloadIndex, + boolean deleteOnFailure, + boolean addNewDownloadsAsCompleted) + throws IOException { + ActionFile actionFile = new ActionFile(actionFilePath); + if (actionFile.exists()) { + boolean success = false; + try { + long nowMs = System.currentTimeMillis(); + for (DownloadRequest request : actionFile.load()) { + if (downloadIdProvider != null) { + request = request.copyWithId(downloadIdProvider.getId(request)); + } + mergeRequest(request, downloadIndex, addNewDownloadsAsCompleted, nowMs); + } + success = true; + } finally { + if (success || deleteOnFailure) { + actionFile.delete(); + } + } + } + } + + /** + * Merges a {@link DownloadRequest} into a {@link DefaultDownloadIndex}. + * + * @param request The request to be merged. + * @param downloadIndex The index into which the request will be merged. + * @param addNewDownloadAsCompleted Whether to add new downloads as completed. + * @throws IOException If an error occurs merging the request. + */ + /* package */ static void mergeRequest( + DownloadRequest request, + DefaultDownloadIndex downloadIndex, + boolean addNewDownloadAsCompleted, + long nowMs) + throws IOException { + @Nullable Download download = downloadIndex.getDownload(request.id); + if (download != null) { + download = DownloadManager.mergeRequest(download, request, download.stopReason, nowMs); + } else { + download = + new Download( + request, + addNewDownloadAsCompleted ? Download.STATE_COMPLETED : STATE_QUEUED, + /* startTimeMs= */ nowMs, + /* updateTimeMs= */ nowMs, + /* contentLength= */ C.LENGTH_UNSET, + Download.STOP_REASON_NONE, + Download.FAILURE_REASON_NONE); + } + downloadIndex.putDownload(download); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DefaultDownloadIndex.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DefaultDownloadIndex.java new file mode 100644 index 0000000000..cc1a2873f5 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DefaultDownloadIndex.java @@ -0,0 +1,452 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import android.content.ContentValues; +import android.database.Cursor; +import android.database.SQLException; +import android.database.sqlite.SQLiteDatabase; +import android.database.sqlite.SQLiteException; +import android.net.Uri; +import androidx.annotation.Nullable; +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.DatabaseIOException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.DatabaseProvider; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.VersionTable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.FailureReason; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.State; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.List; + +/** A {@link DownloadIndex} that uses SQLite to persist {@link Download Downloads}. */ +public final class DefaultDownloadIndex implements WritableDownloadIndex { + + private static final String TABLE_PREFIX = DatabaseProvider.TABLE_PREFIX + "Downloads"; + + @VisibleForTesting /* package */ static final int TABLE_VERSION = 2; + + private static final String COLUMN_ID = "id"; + private static final String COLUMN_TYPE = "title"; + private static final String COLUMN_URI = "uri"; + private static final String COLUMN_STREAM_KEYS = "stream_keys"; + private static final String COLUMN_CUSTOM_CACHE_KEY = "custom_cache_key"; + private static final String COLUMN_DATA = "data"; + private static final String COLUMN_STATE = "state"; + private static final String COLUMN_START_TIME_MS = "start_time_ms"; + private static final String COLUMN_UPDATE_TIME_MS = "update_time_ms"; + private static final String COLUMN_CONTENT_LENGTH = "content_length"; + private static final String COLUMN_STOP_REASON = "stop_reason"; + private static final String COLUMN_FAILURE_REASON = "failure_reason"; + private static final String COLUMN_PERCENT_DOWNLOADED = "percent_downloaded"; + private static final String COLUMN_BYTES_DOWNLOADED = "bytes_downloaded"; + + private static final int COLUMN_INDEX_ID = 0; + private static final int COLUMN_INDEX_TYPE = 1; + private static final int COLUMN_INDEX_URI = 2; + private static final int COLUMN_INDEX_STREAM_KEYS = 3; + private static final int COLUMN_INDEX_CUSTOM_CACHE_KEY = 4; + private static final int COLUMN_INDEX_DATA = 5; + private static final int COLUMN_INDEX_STATE = 6; + private static final int COLUMN_INDEX_START_TIME_MS = 7; + private static final int COLUMN_INDEX_UPDATE_TIME_MS = 8; + private static final int COLUMN_INDEX_CONTENT_LENGTH = 9; + private static final int COLUMN_INDEX_STOP_REASON = 10; + private static final int COLUMN_INDEX_FAILURE_REASON = 11; + private static final int COLUMN_INDEX_PERCENT_DOWNLOADED = 12; + private static final int COLUMN_INDEX_BYTES_DOWNLOADED = 13; + + private static final String WHERE_ID_EQUALS = COLUMN_ID + " = ?"; + private static final String WHERE_STATE_IS_DOWNLOADING = + COLUMN_STATE + " = " + Download.STATE_DOWNLOADING; + private static final String WHERE_STATE_IS_TERMINAL = + getStateQuery(Download.STATE_COMPLETED, Download.STATE_FAILED); + + private static final String[] COLUMNS = + new String[] { + COLUMN_ID, + COLUMN_TYPE, + COLUMN_URI, + COLUMN_STREAM_KEYS, + COLUMN_CUSTOM_CACHE_KEY, + COLUMN_DATA, + COLUMN_STATE, + COLUMN_START_TIME_MS, + COLUMN_UPDATE_TIME_MS, + COLUMN_CONTENT_LENGTH, + COLUMN_STOP_REASON, + COLUMN_FAILURE_REASON, + COLUMN_PERCENT_DOWNLOADED, + COLUMN_BYTES_DOWNLOADED, + }; + + private static final String TABLE_SCHEMA = + "(" + + COLUMN_ID + + " TEXT PRIMARY KEY NOT NULL," + + COLUMN_TYPE + + " TEXT NOT NULL," + + COLUMN_URI + + " TEXT NOT NULL," + + COLUMN_STREAM_KEYS + + " TEXT NOT NULL," + + COLUMN_CUSTOM_CACHE_KEY + + " TEXT," + + COLUMN_DATA + + " BLOB NOT NULL," + + COLUMN_STATE + + " INTEGER NOT NULL," + + COLUMN_START_TIME_MS + + " INTEGER NOT NULL," + + COLUMN_UPDATE_TIME_MS + + " INTEGER NOT NULL," + + COLUMN_CONTENT_LENGTH + + " INTEGER NOT NULL," + + COLUMN_STOP_REASON + + " INTEGER NOT NULL," + + COLUMN_FAILURE_REASON + + " INTEGER NOT NULL," + + COLUMN_PERCENT_DOWNLOADED + + " REAL NOT NULL," + + COLUMN_BYTES_DOWNLOADED + + " INTEGER NOT NULL)"; + + private static final String TRUE = "1"; + + private final String name; + private final String tableName; + private final DatabaseProvider databaseProvider; + + private boolean initialized; + + /** + * Creates an instance that stores the {@link Download Downloads} in an SQLite database provided + * by a {@link DatabaseProvider}. + * + *

Equivalent to calling {@link #DefaultDownloadIndex(DatabaseProvider, String)} with {@code + * name=""}. + * + *

Applications that only have one download index may use this constructor. Applications that + * have multiple download indices should call {@link #DefaultDownloadIndex(DatabaseProvider, + * String)} to specify a unique name for each index. + * + * @param databaseProvider Provides the SQLite database in which downloads are persisted. + */ + public DefaultDownloadIndex(DatabaseProvider databaseProvider) { + this(databaseProvider, ""); + } + + /** + * Creates an instance that stores the {@link Download Downloads} in an SQLite database provided + * by a {@link DatabaseProvider}. + * + * @param databaseProvider Provides the SQLite database in which downloads are persisted. + * @param name The name of the index. This name is incorporated into the names of the SQLite + * tables in which downloads are persisted. + */ + public DefaultDownloadIndex(DatabaseProvider databaseProvider, String name) { + this.name = name; + this.databaseProvider = databaseProvider; + tableName = TABLE_PREFIX + name; + } + + @Override + @Nullable + public Download getDownload(String id) throws DatabaseIOException { + ensureInitialized(); + try (Cursor cursor = getCursor(WHERE_ID_EQUALS, new String[] {id})) { + if (cursor.getCount() == 0) { + return null; + } + cursor.moveToNext(); + return getDownloadForCurrentRow(cursor); + } catch (SQLiteException e) { + throw new DatabaseIOException(e); + } + } + + @Override + public DownloadCursor getDownloads(@Download.State int... states) throws DatabaseIOException { + ensureInitialized(); + Cursor cursor = getCursor(getStateQuery(states), /* selectionArgs= */ null); + return new DownloadCursorImpl(cursor); + } + + @Override + public void putDownload(Download download) throws DatabaseIOException { + ensureInitialized(); + ContentValues values = new ContentValues(); + values.put(COLUMN_ID, download.request.id); + values.put(COLUMN_TYPE, download.request.type); + values.put(COLUMN_URI, download.request.uri.toString()); + values.put(COLUMN_STREAM_KEYS, encodeStreamKeys(download.request.streamKeys)); + values.put(COLUMN_CUSTOM_CACHE_KEY, download.request.customCacheKey); + values.put(COLUMN_DATA, download.request.data); + values.put(COLUMN_STATE, download.state); + values.put(COLUMN_START_TIME_MS, download.startTimeMs); + values.put(COLUMN_UPDATE_TIME_MS, download.updateTimeMs); + values.put(COLUMN_CONTENT_LENGTH, download.contentLength); + values.put(COLUMN_STOP_REASON, download.stopReason); + values.put(COLUMN_FAILURE_REASON, download.failureReason); + values.put(COLUMN_PERCENT_DOWNLOADED, download.getPercentDownloaded()); + values.put(COLUMN_BYTES_DOWNLOADED, download.getBytesDownloaded()); + try { + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.replaceOrThrow(tableName, /* nullColumnHack= */ null, values); + } catch (SQLiteException e) { + throw new DatabaseIOException(e); + } + } + + @Override + public void removeDownload(String id) throws DatabaseIOException { + ensureInitialized(); + try { + databaseProvider.getWritableDatabase().delete(tableName, WHERE_ID_EQUALS, new String[] {id}); + } catch (SQLiteException e) { + throw new DatabaseIOException(e); + } + } + + @Override + public void setDownloadingStatesToQueued() throws DatabaseIOException { + ensureInitialized(); + try { + ContentValues values = new ContentValues(); + values.put(COLUMN_STATE, Download.STATE_QUEUED); + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.update(tableName, values, WHERE_STATE_IS_DOWNLOADING, /* whereArgs= */ null); + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + @Override + public void setStatesToRemoving() throws DatabaseIOException { + ensureInitialized(); + try { + ContentValues values = new ContentValues(); + values.put(COLUMN_STATE, Download.STATE_REMOVING); + // Only downloads in STATE_FAILED are allowed a failure reason, so we need to clear it here in + // case we're moving downloads from STATE_FAILED to STATE_REMOVING. + values.put(COLUMN_FAILURE_REASON, Download.FAILURE_REASON_NONE); + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.update(tableName, values, /* whereClause= */ null, /* whereArgs= */ null); + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + @Override + public void setStopReason(int stopReason) throws DatabaseIOException { + ensureInitialized(); + try { + ContentValues values = new ContentValues(); + values.put(COLUMN_STOP_REASON, stopReason); + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.update(tableName, values, WHERE_STATE_IS_TERMINAL, /* whereArgs= */ null); + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + @Override + public void setStopReason(String id, int stopReason) throws DatabaseIOException { + ensureInitialized(); + try { + ContentValues values = new ContentValues(); + values.put(COLUMN_STOP_REASON, stopReason); + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.update( + tableName, + values, + WHERE_STATE_IS_TERMINAL + " AND " + WHERE_ID_EQUALS, + new String[] {id}); + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + private void ensureInitialized() throws DatabaseIOException { + if (initialized) { + return; + } + try { + SQLiteDatabase readableDatabase = databaseProvider.getReadableDatabase(); + int version = VersionTable.getVersion(readableDatabase, VersionTable.FEATURE_OFFLINE, name); + if (version != TABLE_VERSION) { + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.beginTransactionNonExclusive(); + try { + VersionTable.setVersion( + writableDatabase, VersionTable.FEATURE_OFFLINE, name, TABLE_VERSION); + writableDatabase.execSQL("DROP TABLE IF EXISTS " + tableName); + writableDatabase.execSQL("CREATE TABLE " + tableName + " " + TABLE_SCHEMA); + writableDatabase.setTransactionSuccessful(); + } finally { + writableDatabase.endTransaction(); + } + } + initialized = true; + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + // incompatible types in argument. + @SuppressWarnings("nullness:argument.type.incompatible") + private Cursor getCursor(String selection, @Nullable String[] selectionArgs) + throws DatabaseIOException { + try { + String sortOrder = COLUMN_START_TIME_MS + " ASC"; + return databaseProvider + .getReadableDatabase() + .query( + tableName, + COLUMNS, + selection, + selectionArgs, + /* groupBy= */ null, + /* having= */ null, + sortOrder); + } catch (SQLiteException e) { + throw new DatabaseIOException(e); + } + } + + private static String getStateQuery(@Download.State int... states) { + if (states.length == 0) { + return TRUE; + } + StringBuilder selectionBuilder = new StringBuilder(); + selectionBuilder.append(COLUMN_STATE).append(" IN ("); + for (int i = 0; i < states.length; i++) { + if (i > 0) { + selectionBuilder.append(','); + } + selectionBuilder.append(states[i]); + } + selectionBuilder.append(')'); + return selectionBuilder.toString(); + } + + private static Download getDownloadForCurrentRow(Cursor cursor) { + DownloadRequest request = + new DownloadRequest( + /* id= */ cursor.getString(COLUMN_INDEX_ID), + /* type= */ cursor.getString(COLUMN_INDEX_TYPE), + /* uri= */ Uri.parse(cursor.getString(COLUMN_INDEX_URI)), + /* streamKeys= */ decodeStreamKeys(cursor.getString(COLUMN_INDEX_STREAM_KEYS)), + /* customCacheKey= */ cursor.getString(COLUMN_INDEX_CUSTOM_CACHE_KEY), + /* data= */ cursor.getBlob(COLUMN_INDEX_DATA)); + DownloadProgress downloadProgress = new DownloadProgress(); + downloadProgress.bytesDownloaded = cursor.getLong(COLUMN_INDEX_BYTES_DOWNLOADED); + downloadProgress.percentDownloaded = cursor.getFloat(COLUMN_INDEX_PERCENT_DOWNLOADED); + @State int state = cursor.getInt(COLUMN_INDEX_STATE); + // It's possible the database contains failure reasons for non-failed downloads, which is + // invalid. Clear them here. See https://github.com/google/ExoPlayer/issues/6785. + @FailureReason + int failureReason = + state == Download.STATE_FAILED + ? cursor.getInt(COLUMN_INDEX_FAILURE_REASON) + : Download.FAILURE_REASON_NONE; + return new Download( + request, + state, + /* startTimeMs= */ cursor.getLong(COLUMN_INDEX_START_TIME_MS), + /* updateTimeMs= */ cursor.getLong(COLUMN_INDEX_UPDATE_TIME_MS), + /* contentLength= */ cursor.getLong(COLUMN_INDEX_CONTENT_LENGTH), + /* stopReason= */ cursor.getInt(COLUMN_INDEX_STOP_REASON), + failureReason, + downloadProgress); + } + + private static String encodeStreamKeys(List streamKeys) { + StringBuilder stringBuilder = new StringBuilder(); + for (int i = 0; i < streamKeys.size(); i++) { + StreamKey streamKey = streamKeys.get(i); + stringBuilder + .append(streamKey.periodIndex) + .append('.') + .append(streamKey.groupIndex) + .append('.') + .append(streamKey.trackIndex) + .append(','); + } + if (stringBuilder.length() > 0) { + stringBuilder.setLength(stringBuilder.length() - 1); + } + return stringBuilder.toString(); + } + + private static List decodeStreamKeys(String encodedStreamKeys) { + ArrayList streamKeys = new ArrayList<>(); + if (encodedStreamKeys.isEmpty()) { + return streamKeys; + } + String[] streamKeysStrings = Util.split(encodedStreamKeys, ","); + for (String streamKeysString : streamKeysStrings) { + String[] indices = Util.split(streamKeysString, "\\."); + Assertions.checkState(indices.length == 3); + streamKeys.add( + new StreamKey( + Integer.parseInt(indices[0]), + Integer.parseInt(indices[1]), + Integer.parseInt(indices[2]))); + } + return streamKeys; + } + + private static final class DownloadCursorImpl implements DownloadCursor { + + private final Cursor cursor; + + private DownloadCursorImpl(Cursor cursor) { + this.cursor = cursor; + } + + @Override + public Download getDownload() { + return getDownloadForCurrentRow(cursor); + } + + @Override + public int getCount() { + return cursor.getCount(); + } + + @Override + public int getPosition() { + return cursor.getPosition(); + } + + @Override + public boolean moveToPosition(int position) { + return cursor.moveToPosition(position); + } + + @Override + public void close() { + cursor.close(); + } + + @Override + public boolean isClosed() { + return cursor.isClosed(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DefaultDownloaderFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DefaultDownloaderFactory.java new file mode 100644 index 0000000000..6391af8a95 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DefaultDownloaderFactory.java @@ -0,0 +1,119 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import android.net.Uri; +import androidx.annotation.Nullable; +import java.lang.reflect.Constructor; +import java.util.List; + +/** + * Default {@link DownloaderFactory}, supporting creation of progressive, DASH, HLS and + * SmoothStreaming downloaders. Note that for the latter three, the corresponding library module + * must be built into the application. + */ +public class DefaultDownloaderFactory implements DownloaderFactory { + + @Nullable private static final Constructor DASH_DOWNLOADER_CONSTRUCTOR; + @Nullable private static final Constructor HLS_DOWNLOADER_CONSTRUCTOR; + @Nullable private static final Constructor SS_DOWNLOADER_CONSTRUCTOR; + + static { + Constructor dashDownloaderConstructor = null; + try { + // LINT.IfChange + dashDownloaderConstructor = + getDownloaderConstructor( + Class.forName("com.google.android.exoplayer2.source.dash.offline.DashDownloader")); + // LINT.ThenChange(../../../../../../../../proguard-rules.txt) + } catch (ClassNotFoundException e) { + // Expected if the app was built without the DASH module. + } + DASH_DOWNLOADER_CONSTRUCTOR = dashDownloaderConstructor; + Constructor hlsDownloaderConstructor = null; + try { + // LINT.IfChange + hlsDownloaderConstructor = + getDownloaderConstructor( + Class.forName("com.google.android.exoplayer2.source.hls.offline.HlsDownloader")); + // LINT.ThenChange(../../../../../../../../proguard-rules.txt) + } catch (ClassNotFoundException e) { + // Expected if the app was built without the HLS module. + } + HLS_DOWNLOADER_CONSTRUCTOR = hlsDownloaderConstructor; + Constructor ssDownloaderConstructor = null; + try { + // LINT.IfChange + ssDownloaderConstructor = + getDownloaderConstructor( + Class.forName( + "com.google.android.exoplayer2.source.smoothstreaming.offline.SsDownloader")); + // LINT.ThenChange(../../../../../../../../proguard-rules.txt) + } catch (ClassNotFoundException e) { + // Expected if the app was built without the SmoothStreaming module. + } + SS_DOWNLOADER_CONSTRUCTOR = ssDownloaderConstructor; + } + + private final DownloaderConstructorHelper downloaderConstructorHelper; + + /** @param downloaderConstructorHelper A helper for instantiating downloaders. */ + public DefaultDownloaderFactory(DownloaderConstructorHelper downloaderConstructorHelper) { + this.downloaderConstructorHelper = downloaderConstructorHelper; + } + + @Override + public Downloader createDownloader(DownloadRequest request) { + switch (request.type) { + case DownloadRequest.TYPE_PROGRESSIVE: + return new ProgressiveDownloader( + request.uri, request.customCacheKey, downloaderConstructorHelper); + case DownloadRequest.TYPE_DASH: + return createDownloader(request, DASH_DOWNLOADER_CONSTRUCTOR); + case DownloadRequest.TYPE_HLS: + return createDownloader(request, HLS_DOWNLOADER_CONSTRUCTOR); + case DownloadRequest.TYPE_SS: + return createDownloader(request, SS_DOWNLOADER_CONSTRUCTOR); + default: + throw new IllegalArgumentException("Unsupported type: " + request.type); + } + } + + private Downloader createDownloader( + DownloadRequest request, @Nullable Constructor constructor) { + if (constructor == null) { + throw new IllegalStateException("Module missing for: " + request.type); + } + try { + return constructor.newInstance(request.uri, request.streamKeys, downloaderConstructorHelper); + } catch (Exception e) { + throw new RuntimeException("Failed to instantiate downloader for: " + request.type, e); + } + } + + // LINT.IfChange + private static Constructor getDownloaderConstructor(Class clazz) { + try { + return clazz + .asSubclass(Downloader.class) + .getConstructor(Uri.class, List.class, DownloaderConstructorHelper.class); + } catch (NoSuchMethodException e) { + // The downloader is present, but the expected constructor is missing. + throw new RuntimeException("Downloader constructor missing", e); + } + } + // LINT.ThenChange(../../../../../../../../proguard-rules.txt) +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/Download.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/Download.java new file mode 100644 index 0000000000..a3bc253a6e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/Download.java @@ -0,0 +1,164 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** Represents state of a download. */ +public final class Download { + + /** + * Download states. One of {@link #STATE_QUEUED}, {@link #STATE_STOPPED}, {@link + * #STATE_DOWNLOADING}, {@link #STATE_COMPLETED}, {@link #STATE_FAILED}, {@link #STATE_REMOVING} + * or {@link #STATE_RESTARTING}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + STATE_QUEUED, + STATE_STOPPED, + STATE_DOWNLOADING, + STATE_COMPLETED, + STATE_FAILED, + STATE_REMOVING, + STATE_RESTARTING + }) + public @interface State {} + // Important: These constants are persisted into DownloadIndex. Do not change them. + /** + * The download is waiting to be started. A download may be queued because the {@link + * DownloadManager} + * + *

    + *
  • Is {@link DownloadManager#getDownloadsPaused() paused} + *
  • Has {@link DownloadManager#getRequirements() Requirements} that are not met + *
  • Has already started {@link DownloadManager#getMaxParallelDownloads() + * maxParallelDownloads} + *
+ */ + public static final int STATE_QUEUED = 0; + /** The download is stopped for a specified {@link #stopReason}. */ + public static final int STATE_STOPPED = 1; + /** The download is currently started. */ + public static final int STATE_DOWNLOADING = 2; + /** The download completed. */ + public static final int STATE_COMPLETED = 3; + /** The download failed. */ + public static final int STATE_FAILED = 4; + /** The download is being removed. */ + public static final int STATE_REMOVING = 5; + /** The download will restart after all downloaded data is removed. */ + public static final int STATE_RESTARTING = 7; + + /** Failure reasons. Either {@link #FAILURE_REASON_NONE} or {@link #FAILURE_REASON_UNKNOWN}. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({FAILURE_REASON_NONE, FAILURE_REASON_UNKNOWN}) + public @interface FailureReason {} + /** The download isn't failed. */ + public static final int FAILURE_REASON_NONE = 0; + /** The download is failed because of unknown reason. */ + public static final int FAILURE_REASON_UNKNOWN = 1; + + /** The download isn't stopped. */ + public static final int STOP_REASON_NONE = 0; + + /** The download request. */ + public final DownloadRequest request; + /** The state of the download. */ + @State public final int state; + /** The first time when download entry is created. */ + public final long startTimeMs; + /** The last update time. */ + public final long updateTimeMs; + /** The total size of the content in bytes, or {@link C#LENGTH_UNSET} if unknown. */ + public final long contentLength; + /** The reason the download is stopped, or {@link #STOP_REASON_NONE}. */ + public final int stopReason; + /** + * If {@link #state} is {@link #STATE_FAILED} then this is the cause, otherwise {@link + * #FAILURE_REASON_NONE}. + */ + @FailureReason public final int failureReason; + + /* package */ final DownloadProgress progress; + + public Download( + DownloadRequest request, + @State int state, + long startTimeMs, + long updateTimeMs, + long contentLength, + int stopReason, + @FailureReason int failureReason) { + this( + request, + state, + startTimeMs, + updateTimeMs, + contentLength, + stopReason, + failureReason, + new DownloadProgress()); + } + + public Download( + DownloadRequest request, + @State int state, + long startTimeMs, + long updateTimeMs, + long contentLength, + int stopReason, + @FailureReason int failureReason, + DownloadProgress progress) { + Assertions.checkNotNull(progress); + Assertions.checkArgument((failureReason == FAILURE_REASON_NONE) == (state != STATE_FAILED)); + if (stopReason != 0) { + Assertions.checkArgument(state != STATE_DOWNLOADING && state != STATE_QUEUED); + } + this.request = request; + this.state = state; + this.startTimeMs = startTimeMs; + this.updateTimeMs = updateTimeMs; + this.contentLength = contentLength; + this.stopReason = stopReason; + this.failureReason = failureReason; + this.progress = progress; + } + + /** Returns whether the download is completed or failed. These are terminal states. */ + public boolean isTerminalState() { + return state == STATE_COMPLETED || state == STATE_FAILED; + } + + /** Returns the total number of downloaded bytes. */ + public long getBytesDownloaded() { + return progress.bytesDownloaded; + } + + /** + * Returns the estimated download percentage, or {@link C#PERCENTAGE_UNSET} if no estimate is + * available. + */ + public float getPercentDownloaded() { + return progress.percentDownloaded; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadCursor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadCursor.java new file mode 100644 index 0000000000..9693e43002 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadCursor.java @@ -0,0 +1,129 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import java.io.Closeable; + +/** Provides random read-write access to the result set returned by a database query. */ +public interface DownloadCursor extends Closeable { + + /** Returns the download at the current position. */ + Download getDownload(); + + /** Returns the numbers of downloads in the cursor. */ + int getCount(); + + /** + * Returns the current position of the cursor in the download set. The value is zero-based. When + * the download set is first returned the cursor will be at positon -1, which is before the first + * download. After the last download is returned another call to next() will leave the cursor past + * the last entry, at a position of count(). + * + * @return the current cursor position. + */ + int getPosition(); + + /** + * Move the cursor to an absolute position. The valid range of values is -1 <= position <= + * count. + * + *

This method will return true if the request destination was reachable, otherwise, it returns + * false. + * + * @param position the zero-based position to move to. + * @return whether the requested move fully succeeded. + */ + boolean moveToPosition(int position); + + /** + * Move the cursor to the first download. + * + *

This method will return false if the cursor is empty. + * + * @return whether the move succeeded. + */ + default boolean moveToFirst() { + return moveToPosition(0); + } + + /** + * Move the cursor to the last download. + * + *

This method will return false if the cursor is empty. + * + * @return whether the move succeeded. + */ + default boolean moveToLast() { + return moveToPosition(getCount() - 1); + } + + /** + * Move the cursor to the next download. + * + *

This method will return false if the cursor is already past the last entry in the result + * set. + * + * @return whether the move succeeded. + */ + default boolean moveToNext() { + return moveToPosition(getPosition() + 1); + } + + /** + * Move the cursor to the previous download. + * + *

This method will return false if the cursor is already before the first entry in the result + * set. + * + * @return whether the move succeeded. + */ + default boolean moveToPrevious() { + return moveToPosition(getPosition() - 1); + } + + /** Returns whether the cursor is pointing to the first download. */ + default boolean isFirst() { + return getPosition() == 0 && getCount() != 0; + } + + /** Returns whether the cursor is pointing to the last download. */ + default boolean isLast() { + int count = getCount(); + return getPosition() == (count - 1) && count != 0; + } + + /** Returns whether the cursor is pointing to the position before the first download. */ + default boolean isBeforeFirst() { + if (getCount() == 0) { + return true; + } + return getPosition() == -1; + } + + /** Returns whether the cursor is pointing to the position after the last download. */ + default boolean isAfterLast() { + if (getCount() == 0) { + return true; + } + return getPosition() == getCount(); + } + + /** Returns whether the cursor is closed */ + boolean isClosed(); + + @Override + void close(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadException.java new file mode 100644 index 0000000000..cd95b5f922 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadException.java @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import java.io.IOException; + +/** Thrown on an error during downloading. */ +public final class DownloadException extends IOException { + + /** @param message The message for the exception. */ + public DownloadException(String message) { + super(message); + } + + /** @param cause The cause for the exception. */ + public DownloadException(Throwable cause) { + super(cause); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadHelper.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadHelper.java new file mode 100644 index 0000000000..6070b3a80f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadHelper.java @@ -0,0 +1,1174 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import android.content.Context; +import android.net.Uri; +import android.os.Handler; +import android.os.HandlerThread; +import android.os.Message; +import android.util.SparseIntArray; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RenderersFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.FrameworkMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ProgressiveMediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunkIterator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.BaseTrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.DefaultTrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.DefaultTrackSelector.Parameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.DefaultTrackSelector.SelectionOverride; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.MappingTrackSelector.MappedTrackInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectorResult; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource.Factory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultAllocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.lang.reflect.Constructor; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import org.checkerframework.checker.nullness.compatqual.NullableType; +import org.checkerframework.checker.nullness.qual.EnsuresNonNull; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; +import org.checkerframework.checker.nullness.qual.RequiresNonNull; + +/** + * A helper for initializing and removing downloads. + * + *

The helper extracts track information from the media, selects tracks for downloading, and + * creates {@link DownloadRequest download requests} based on the selected tracks. + * + *

A typical usage of DownloadHelper follows these steps: + * + *

    + *
  1. Build the helper using one of the {@code forXXX} methods. + *
  2. Prepare the helper using {@link #prepare(Callback)} and wait for the callback. + *
  3. Optional: Inspect the selected tracks using {@link #getMappedTrackInfo(int)} and {@link + * #getTrackSelections(int, int)}, and make adjustments using {@link + * #clearTrackSelections(int)}, {@link #replaceTrackSelections(int, Parameters)} and {@link + * #addTrackSelection(int, Parameters)}. + *
  4. Create a download request for the selected track using {@link #getDownloadRequest(byte[])}. + *
  5. Release the helper using {@link #release()}. + *
+ */ +public final class DownloadHelper { + + /** + * Default track selection parameters for downloading, but without any {@link Context} + * constraints. + * + *

If possible, use {@link #getDefaultTrackSelectorParameters(Context)} instead. + * + * @see Parameters#DEFAULT_WITHOUT_CONTEXT + */ + public static final Parameters DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_CONTEXT = + Parameters.DEFAULT_WITHOUT_CONTEXT.buildUpon().setForceHighestSupportedBitrate(true).build(); + + /** + * @deprecated This instance does not have {@link Context} constraints. Use {@link + * #getDefaultTrackSelectorParameters(Context)} instead. + */ + @Deprecated + public static final Parameters DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_VIEWPORT = + DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_CONTEXT; + + /** + * @deprecated This instance does not have {@link Context} constraints. Use {@link + * #getDefaultTrackSelectorParameters(Context)} instead. + */ + @Deprecated + public static final DefaultTrackSelector.Parameters DEFAULT_TRACK_SELECTOR_PARAMETERS = + DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_CONTEXT; + + /** Returns the default parameters used for track selection for downloading. */ + public static DefaultTrackSelector.Parameters getDefaultTrackSelectorParameters(Context context) { + return Parameters.getDefaults(context) + .buildUpon() + .setForceHighestSupportedBitrate(true) + .build(); + } + + /** A callback to be notified when the {@link DownloadHelper} is prepared. */ + public interface Callback { + + /** + * Called when preparation completes. + * + * @param helper The reporting {@link DownloadHelper}. + */ + void onPrepared(DownloadHelper helper); + + /** + * Called when preparation fails. + * + * @param helper The reporting {@link DownloadHelper}. + * @param e The error. + */ + void onPrepareError(DownloadHelper helper, IOException e); + } + + /** Thrown at an attempt to download live content. */ + public static class LiveContentUnsupportedException extends IOException {} + + @Nullable + private static final Constructor DASH_FACTORY_CONSTRUCTOR = + getConstructor("com.google.android.exoplayer2.source.dash.DashMediaSource$Factory"); + + @Nullable + private static final Constructor SS_FACTORY_CONSTRUCTOR = + getConstructor("com.google.android.exoplayer2.source.smoothstreaming.SsMediaSource$Factory"); + + @Nullable + private static final Constructor HLS_FACTORY_CONSTRUCTOR = + getConstructor("com.google.android.exoplayer2.source.hls.HlsMediaSource$Factory"); + + /** @deprecated Use {@link #forProgressive(Context, Uri)} */ + @Deprecated + @SuppressWarnings("deprecation") + public static DownloadHelper forProgressive(Uri uri) { + return forProgressive(uri, /* cacheKey= */ null); + } + + /** + * Creates a {@link DownloadHelper} for progressive streams. + * + * @param context Any {@link Context}. + * @param uri A stream {@link Uri}. + * @return A {@link DownloadHelper} for progressive streams. + */ + public static DownloadHelper forProgressive(Context context, Uri uri) { + return forProgressive(context, uri, /* cacheKey= */ null); + } + + /** @deprecated Use {@link #forProgressive(Context, Uri, String)} */ + @Deprecated + public static DownloadHelper forProgressive(Uri uri, @Nullable String cacheKey) { + return new DownloadHelper( + DownloadRequest.TYPE_PROGRESSIVE, + uri, + cacheKey, + /* mediaSource= */ null, + DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_VIEWPORT, + /* rendererCapabilities= */ new RendererCapabilities[0]); + } + + /** + * Creates a {@link DownloadHelper} for progressive streams. + * + * @param context Any {@link Context}. + * @param uri A stream {@link Uri}. + * @param cacheKey An optional cache key. + * @return A {@link DownloadHelper} for progressive streams. + */ + public static DownloadHelper forProgressive(Context context, Uri uri, @Nullable String cacheKey) { + return new DownloadHelper( + DownloadRequest.TYPE_PROGRESSIVE, + uri, + cacheKey, + /* mediaSource= */ null, + getDefaultTrackSelectorParameters(context), + /* rendererCapabilities= */ new RendererCapabilities[0]); + } + + /** @deprecated Use {@link #forDash(Context, Uri, Factory, RenderersFactory)} */ + @Deprecated + public static DownloadHelper forDash( + Uri uri, DataSource.Factory dataSourceFactory, RenderersFactory renderersFactory) { + return forDash( + uri, + dataSourceFactory, + renderersFactory, + /* drmSessionManager= */ null, + DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_VIEWPORT); + } + + /** + * Creates a {@link DownloadHelper} for DASH streams. + * + * @param context Any {@link Context}. + * @param uri A manifest {@link Uri}. + * @param dataSourceFactory A {@link DataSource.Factory} used to load the manifest. + * @param renderersFactory A {@link RenderersFactory} creating the renderers for which tracks are + * selected. + * @return A {@link DownloadHelper} for DASH streams. + * @throws IllegalStateException If the DASH module is missing. + */ + public static DownloadHelper forDash( + Context context, + Uri uri, + DataSource.Factory dataSourceFactory, + RenderersFactory renderersFactory) { + return forDash( + uri, + dataSourceFactory, + renderersFactory, + /* drmSessionManager= */ null, + getDefaultTrackSelectorParameters(context)); + } + + /** + * Creates a {@link DownloadHelper} for DASH streams. + * + * @param uri A manifest {@link Uri}. + * @param dataSourceFactory A {@link DataSource.Factory} used to load the manifest. + * @param renderersFactory A {@link RenderersFactory} creating the renderers for which tracks are + * selected. + * @param drmSessionManager An optional {@link DrmSessionManager}. Used to help determine which + * tracks can be selected. + * @param trackSelectorParameters {@link DefaultTrackSelector.Parameters} for selecting tracks for + * downloading. + * @return A {@link DownloadHelper} for DASH streams. + * @throws IllegalStateException If the DASH module is missing. + */ + public static DownloadHelper forDash( + Uri uri, + DataSource.Factory dataSourceFactory, + RenderersFactory renderersFactory, + @Nullable DrmSessionManager drmSessionManager, + DefaultTrackSelector.Parameters trackSelectorParameters) { + return new DownloadHelper( + DownloadRequest.TYPE_DASH, + uri, + /* cacheKey= */ null, + createMediaSourceInternal( + DASH_FACTORY_CONSTRUCTOR, + uri, + dataSourceFactory, + drmSessionManager, + /* streamKeys= */ null), + trackSelectorParameters, + Util.getRendererCapabilities(renderersFactory)); + } + + /** @deprecated Use {@link #forHls(Context, Uri, Factory, RenderersFactory)} */ + @Deprecated + public static DownloadHelper forHls( + Uri uri, DataSource.Factory dataSourceFactory, RenderersFactory renderersFactory) { + return forHls( + uri, + dataSourceFactory, + renderersFactory, + /* drmSessionManager= */ null, + DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_VIEWPORT); + } + + /** + * Creates a {@link DownloadHelper} for HLS streams. + * + * @param context Any {@link Context}. + * @param uri A playlist {@link Uri}. + * @param dataSourceFactory A {@link DataSource.Factory} used to load the playlist. + * @param renderersFactory A {@link RenderersFactory} creating the renderers for which tracks are + * selected. + * @return A {@link DownloadHelper} for HLS streams. + * @throws IllegalStateException If the HLS module is missing. + */ + public static DownloadHelper forHls( + Context context, + Uri uri, + DataSource.Factory dataSourceFactory, + RenderersFactory renderersFactory) { + return forHls( + uri, + dataSourceFactory, + renderersFactory, + /* drmSessionManager= */ null, + getDefaultTrackSelectorParameters(context)); + } + + /** + * Creates a {@link DownloadHelper} for HLS streams. + * + * @param uri A playlist {@link Uri}. + * @param dataSourceFactory A {@link DataSource.Factory} used to load the playlist. + * @param renderersFactory A {@link RenderersFactory} creating the renderers for which tracks are + * selected. + * @param drmSessionManager An optional {@link DrmSessionManager}. Used to help determine which + * tracks can be selected. + * @param trackSelectorParameters {@link DefaultTrackSelector.Parameters} for selecting tracks for + * downloading. + * @return A {@link DownloadHelper} for HLS streams. + * @throws IllegalStateException If the HLS module is missing. + */ + public static DownloadHelper forHls( + Uri uri, + DataSource.Factory dataSourceFactory, + RenderersFactory renderersFactory, + @Nullable DrmSessionManager drmSessionManager, + DefaultTrackSelector.Parameters trackSelectorParameters) { + return new DownloadHelper( + DownloadRequest.TYPE_HLS, + uri, + /* cacheKey= */ null, + createMediaSourceInternal( + HLS_FACTORY_CONSTRUCTOR, + uri, + dataSourceFactory, + drmSessionManager, + /* streamKeys= */ null), + trackSelectorParameters, + Util.getRendererCapabilities(renderersFactory)); + } + + /** @deprecated Use {@link #forSmoothStreaming(Context, Uri, Factory, RenderersFactory)} */ + @Deprecated + public static DownloadHelper forSmoothStreaming( + Uri uri, DataSource.Factory dataSourceFactory, RenderersFactory renderersFactory) { + return forSmoothStreaming( + uri, + dataSourceFactory, + renderersFactory, + /* drmSessionManager= */ null, + DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_VIEWPORT); + } + + /** + * Creates a {@link DownloadHelper} for SmoothStreaming streams. + * + * @param context Any {@link Context}. + * @param uri A manifest {@link Uri}. + * @param dataSourceFactory A {@link DataSource.Factory} used to load the manifest. + * @param renderersFactory A {@link RenderersFactory} creating the renderers for which tracks are + * selected. + * @return A {@link DownloadHelper} for SmoothStreaming streams. + * @throws IllegalStateException If the SmoothStreaming module is missing. + */ + public static DownloadHelper forSmoothStreaming( + Context context, + Uri uri, + DataSource.Factory dataSourceFactory, + RenderersFactory renderersFactory) { + return forSmoothStreaming( + uri, + dataSourceFactory, + renderersFactory, + /* drmSessionManager= */ null, + getDefaultTrackSelectorParameters(context)); + } + + /** + * Creates a {@link DownloadHelper} for SmoothStreaming streams. + * + * @param uri A manifest {@link Uri}. + * @param dataSourceFactory A {@link DataSource.Factory} used to load the manifest. + * @param renderersFactory A {@link RenderersFactory} creating the renderers for which tracks are + * selected. + * @param drmSessionManager An optional {@link DrmSessionManager}. Used to help determine which + * tracks can be selected. + * @param trackSelectorParameters {@link DefaultTrackSelector.Parameters} for selecting tracks for + * downloading. + * @return A {@link DownloadHelper} for SmoothStreaming streams. + * @throws IllegalStateException If the SmoothStreaming module is missing. + */ + public static DownloadHelper forSmoothStreaming( + Uri uri, + DataSource.Factory dataSourceFactory, + RenderersFactory renderersFactory, + @Nullable DrmSessionManager drmSessionManager, + DefaultTrackSelector.Parameters trackSelectorParameters) { + return new DownloadHelper( + DownloadRequest.TYPE_SS, + uri, + /* cacheKey= */ null, + createMediaSourceInternal( + SS_FACTORY_CONSTRUCTOR, + uri, + dataSourceFactory, + drmSessionManager, + /* streamKeys= */ null), + trackSelectorParameters, + Util.getRendererCapabilities(renderersFactory)); + } + + /** + * Equivalent to {@link #createMediaSource(DownloadRequest, Factory, DrmSessionManager) + * createMediaSource(downloadRequest, dataSourceFactory, null)}. + */ + public static MediaSource createMediaSource( + DownloadRequest downloadRequest, DataSource.Factory dataSourceFactory) { + return createMediaSource(downloadRequest, dataSourceFactory, /* drmSessionManager= */ null); + } + + /** + * Utility method to create a {@link MediaSource} that only exposes the tracks defined in {@code + * downloadRequest}. + * + * @param downloadRequest A {@link DownloadRequest}. + * @param dataSourceFactory A factory for {@link DataSource}s to read the media. + * @param drmSessionManager An optional {@link DrmSessionManager} to be passed to the {@link + * MediaSource}. + * @return A {@link MediaSource} that only exposes the tracks defined in {@code downloadRequest}. + */ + public static MediaSource createMediaSource( + DownloadRequest downloadRequest, + DataSource.Factory dataSourceFactory, + @Nullable DrmSessionManager drmSessionManager) { + @Nullable Constructor constructor; + switch (downloadRequest.type) { + case DownloadRequest.TYPE_DASH: + constructor = DASH_FACTORY_CONSTRUCTOR; + break; + case DownloadRequest.TYPE_SS: + constructor = SS_FACTORY_CONSTRUCTOR; + break; + case DownloadRequest.TYPE_HLS: + constructor = HLS_FACTORY_CONSTRUCTOR; + break; + case DownloadRequest.TYPE_PROGRESSIVE: + return new ProgressiveMediaSource.Factory(dataSourceFactory) + .setCustomCacheKey(downloadRequest.customCacheKey) + .createMediaSource(downloadRequest.uri); + default: + throw new IllegalStateException("Unsupported type: " + downloadRequest.type); + } + return createMediaSourceInternal( + constructor, + downloadRequest.uri, + dataSourceFactory, + drmSessionManager, + downloadRequest.streamKeys); + } + + private final String downloadType; + private final Uri uri; + @Nullable private final String cacheKey; + @Nullable private final MediaSource mediaSource; + private final DefaultTrackSelector trackSelector; + private final RendererCapabilities[] rendererCapabilities; + private final SparseIntArray scratchSet; + private final Handler callbackHandler; + private final Timeline.Window window; + + private boolean isPreparedWithMedia; + private @MonotonicNonNull Callback callback; + private @MonotonicNonNull MediaPreparer mediaPreparer; + private TrackGroupArray @MonotonicNonNull [] trackGroupArrays; + private MappedTrackInfo @MonotonicNonNull [] mappedTrackInfos; + private List @MonotonicNonNull [][] trackSelectionsByPeriodAndRenderer; + private List @MonotonicNonNull [][] immutableTrackSelectionsByPeriodAndRenderer; + + /** + * Creates download helper. + * + * @param downloadType A download type. This value will be used as {@link DownloadRequest#type}. + * @param uri A {@link Uri}. + * @param cacheKey An optional cache key. + * @param mediaSource A {@link MediaSource} for which tracks are selected, or null if no track + * selection needs to be made. + * @param trackSelectorParameters {@link DefaultTrackSelector.Parameters} for selecting tracks for + * downloading. + * @param rendererCapabilities The {@link RendererCapabilities} of the renderers for which tracks + * are selected. + */ + public DownloadHelper( + String downloadType, + Uri uri, + @Nullable String cacheKey, + @Nullable MediaSource mediaSource, + DefaultTrackSelector.Parameters trackSelectorParameters, + RendererCapabilities[] rendererCapabilities) { + this.downloadType = downloadType; + this.uri = uri; + this.cacheKey = cacheKey; + this.mediaSource = mediaSource; + this.trackSelector = + new DefaultTrackSelector(trackSelectorParameters, new DownloadTrackSelection.Factory()); + this.rendererCapabilities = rendererCapabilities; + this.scratchSet = new SparseIntArray(); + trackSelector.init(/* listener= */ () -> {}, new DummyBandwidthMeter()); + callbackHandler = new Handler(Util.getLooper()); + window = new Timeline.Window(); + } + + /** + * Initializes the helper for starting a download. + * + * @param callback A callback to be notified when preparation completes or fails. + * @throws IllegalStateException If the download helper has already been prepared. + */ + public void prepare(Callback callback) { + Assertions.checkState(this.callback == null); + this.callback = callback; + if (mediaSource != null) { + mediaPreparer = new MediaPreparer(mediaSource, /* downloadHelper= */ this); + } else { + callbackHandler.post(() -> callback.onPrepared(this)); + } + } + + /** Releases the helper and all resources it is holding. */ + public void release() { + if (mediaPreparer != null) { + mediaPreparer.release(); + } + } + + /** + * Returns the manifest, or null if no manifest is loaded. Must not be called until after + * preparation completes. + */ + @Nullable + public Object getManifest() { + if (mediaSource == null) { + return null; + } + assertPreparedWithMedia(); + return mediaPreparer.timeline.getWindowCount() > 0 + ? mediaPreparer.timeline.getWindow(/* windowIndex= */ 0, window).manifest + : null; + } + + /** + * Returns the number of periods for which media is available. Must not be called until after + * preparation completes. + */ + public int getPeriodCount() { + if (mediaSource == null) { + return 0; + } + assertPreparedWithMedia(); + return trackGroupArrays.length; + } + + /** + * Returns the track groups for the given period. Must not be called until after preparation + * completes. + * + *

Use {@link #getMappedTrackInfo(int)} to get the track groups mapped to renderers. + * + * @param periodIndex The period index. + * @return The track groups for the period. May be {@link TrackGroupArray#EMPTY} for single stream + * content. + */ + public TrackGroupArray getTrackGroups(int periodIndex) { + assertPreparedWithMedia(); + return trackGroupArrays[periodIndex]; + } + + /** + * Returns the mapped track info for the given period. Must not be called until after preparation + * completes. + * + * @param periodIndex The period index. + * @return The {@link MappedTrackInfo} for the period. + */ + public MappedTrackInfo getMappedTrackInfo(int periodIndex) { + assertPreparedWithMedia(); + return mappedTrackInfos[periodIndex]; + } + + /** + * Returns all {@link TrackSelection track selections} for a period and renderer. Must not be + * called until after preparation completes. + * + * @param periodIndex The period index. + * @param rendererIndex The renderer index. + * @return A list of selected {@link TrackSelection track selections}. + */ + public List getTrackSelections(int periodIndex, int rendererIndex) { + assertPreparedWithMedia(); + return immutableTrackSelectionsByPeriodAndRenderer[periodIndex][rendererIndex]; + } + + /** + * Clears the selection of tracks for a period. Must not be called until after preparation + * completes. + * + * @param periodIndex The period index for which track selections are cleared. + */ + public void clearTrackSelections(int periodIndex) { + assertPreparedWithMedia(); + for (int i = 0; i < rendererCapabilities.length; i++) { + trackSelectionsByPeriodAndRenderer[periodIndex][i].clear(); + } + } + + /** + * Replaces a selection of tracks to be downloaded. Must not be called until after preparation + * completes. + * + * @param periodIndex The period index for which the track selection is replaced. + * @param trackSelectorParameters The {@link DefaultTrackSelector.Parameters} to obtain the new + * selection of tracks. + */ + public void replaceTrackSelections( + int periodIndex, DefaultTrackSelector.Parameters trackSelectorParameters) { + clearTrackSelections(periodIndex); + addTrackSelection(periodIndex, trackSelectorParameters); + } + + /** + * Adds a selection of tracks to be downloaded. Must not be called until after preparation + * completes. + * + * @param periodIndex The period index this track selection is added for. + * @param trackSelectorParameters The {@link DefaultTrackSelector.Parameters} to obtain the new + * selection of tracks. + */ + public void addTrackSelection( + int periodIndex, DefaultTrackSelector.Parameters trackSelectorParameters) { + assertPreparedWithMedia(); + trackSelector.setParameters(trackSelectorParameters); + runTrackSelection(periodIndex); + } + + /** + * Convenience method to add selections of tracks for all specified audio languages. If an audio + * track in one of the specified languages is not available, the default fallback audio track is + * used instead. Must not be called until after preparation completes. + * + * @param languages A list of audio languages for which tracks should be added to the download + * selection, as IETF BCP 47 conformant tags. + */ + public void addAudioLanguagesToSelection(String... languages) { + assertPreparedWithMedia(); + for (int periodIndex = 0; periodIndex < mappedTrackInfos.length; periodIndex++) { + DefaultTrackSelector.ParametersBuilder parametersBuilder = + DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_CONTEXT.buildUpon(); + MappedTrackInfo mappedTrackInfo = mappedTrackInfos[periodIndex]; + int rendererCount = mappedTrackInfo.getRendererCount(); + for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) { + if (mappedTrackInfo.getRendererType(rendererIndex) != C.TRACK_TYPE_AUDIO) { + parametersBuilder.setRendererDisabled(rendererIndex, /* disabled= */ true); + } + } + for (String language : languages) { + parametersBuilder.setPreferredAudioLanguage(language); + addTrackSelection(periodIndex, parametersBuilder.build()); + } + } + } + + /** + * Convenience method to add selections of tracks for all specified text languages. Must not be + * called until after preparation completes. + * + * @param selectUndeterminedTextLanguage Whether a text track with undetermined language should be + * selected for downloading if no track with one of the specified {@code languages} is + * available. + * @param languages A list of text languages for which tracks should be added to the download + * selection, as IETF BCP 47 conformant tags. + */ + public void addTextLanguagesToSelection( + boolean selectUndeterminedTextLanguage, String... languages) { + assertPreparedWithMedia(); + for (int periodIndex = 0; periodIndex < mappedTrackInfos.length; periodIndex++) { + DefaultTrackSelector.ParametersBuilder parametersBuilder = + DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_CONTEXT.buildUpon(); + MappedTrackInfo mappedTrackInfo = mappedTrackInfos[periodIndex]; + int rendererCount = mappedTrackInfo.getRendererCount(); + for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) { + if (mappedTrackInfo.getRendererType(rendererIndex) != C.TRACK_TYPE_TEXT) { + parametersBuilder.setRendererDisabled(rendererIndex, /* disabled= */ true); + } + } + parametersBuilder.setSelectUndeterminedTextLanguage(selectUndeterminedTextLanguage); + for (String language : languages) { + parametersBuilder.setPreferredTextLanguage(language); + addTrackSelection(periodIndex, parametersBuilder.build()); + } + } + } + + /** + * Convenience method to add a selection of tracks to be downloaded for a single renderer. Must + * not be called until after preparation completes. + * + * @param periodIndex The period index the track selection is added for. + * @param rendererIndex The renderer index the track selection is added for. + * @param trackSelectorParameters The {@link DefaultTrackSelector.Parameters} to obtain the new + * selection of tracks. + * @param overrides A list of {@link SelectionOverride SelectionOverrides} to apply to the {@code + * trackSelectorParameters}. If empty, {@code trackSelectorParameters} are used as they are. + */ + public void addTrackSelectionForSingleRenderer( + int periodIndex, + int rendererIndex, + DefaultTrackSelector.Parameters trackSelectorParameters, + List overrides) { + assertPreparedWithMedia(); + DefaultTrackSelector.ParametersBuilder builder = trackSelectorParameters.buildUpon(); + for (int i = 0; i < mappedTrackInfos[periodIndex].getRendererCount(); i++) { + builder.setRendererDisabled(/* rendererIndex= */ i, /* disabled= */ i != rendererIndex); + } + if (overrides.isEmpty()) { + addTrackSelection(periodIndex, builder.build()); + } else { + TrackGroupArray trackGroupArray = mappedTrackInfos[periodIndex].getTrackGroups(rendererIndex); + for (int i = 0; i < overrides.size(); i++) { + builder.setSelectionOverride(rendererIndex, trackGroupArray, overrides.get(i)); + addTrackSelection(periodIndex, builder.build()); + } + } + } + + /** + * Builds a {@link DownloadRequest} for downloading the selected tracks. Must not be called until + * after preparation completes. The uri of the {@link DownloadRequest} will be used as content id. + * + * @param data Application provided data to store in {@link DownloadRequest#data}. + * @return The built {@link DownloadRequest}. + */ + public DownloadRequest getDownloadRequest(@Nullable byte[] data) { + return getDownloadRequest(uri.toString(), data); + } + + /** + * Builds a {@link DownloadRequest} for downloading the selected tracks. Must not be called until + * after preparation completes. + * + * @param id The unique content id. + * @param data Application provided data to store in {@link DownloadRequest#data}. + * @return The built {@link DownloadRequest}. + */ + public DownloadRequest getDownloadRequest(String id, @Nullable byte[] data) { + if (mediaSource == null) { + return new DownloadRequest( + id, downloadType, uri, /* streamKeys= */ Collections.emptyList(), cacheKey, data); + } + assertPreparedWithMedia(); + List streamKeys = new ArrayList<>(); + List allSelections = new ArrayList<>(); + int periodCount = trackSelectionsByPeriodAndRenderer.length; + for (int periodIndex = 0; periodIndex < periodCount; periodIndex++) { + allSelections.clear(); + int rendererCount = trackSelectionsByPeriodAndRenderer[periodIndex].length; + for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) { + allSelections.addAll(trackSelectionsByPeriodAndRenderer[periodIndex][rendererIndex]); + } + streamKeys.addAll(mediaPreparer.mediaPeriods[periodIndex].getStreamKeys(allSelections)); + } + return new DownloadRequest(id, downloadType, uri, streamKeys, cacheKey, data); + } + + // Initialization of array of Lists. + @SuppressWarnings("unchecked") + private void onMediaPrepared() { + Assertions.checkNotNull(mediaPreparer); + Assertions.checkNotNull(mediaPreparer.mediaPeriods); + Assertions.checkNotNull(mediaPreparer.timeline); + int periodCount = mediaPreparer.mediaPeriods.length; + int rendererCount = rendererCapabilities.length; + trackSelectionsByPeriodAndRenderer = + (List[][]) new List[periodCount][rendererCount]; + immutableTrackSelectionsByPeriodAndRenderer = + (List[][]) new List[periodCount][rendererCount]; + for (int i = 0; i < periodCount; i++) { + for (int j = 0; j < rendererCount; j++) { + trackSelectionsByPeriodAndRenderer[i][j] = new ArrayList<>(); + immutableTrackSelectionsByPeriodAndRenderer[i][j] = + Collections.unmodifiableList(trackSelectionsByPeriodAndRenderer[i][j]); + } + } + trackGroupArrays = new TrackGroupArray[periodCount]; + mappedTrackInfos = new MappedTrackInfo[periodCount]; + for (int i = 0; i < periodCount; i++) { + trackGroupArrays[i] = mediaPreparer.mediaPeriods[i].getTrackGroups(); + TrackSelectorResult trackSelectorResult = runTrackSelection(/* periodIndex= */ i); + trackSelector.onSelectionActivated(trackSelectorResult.info); + mappedTrackInfos[i] = Assertions.checkNotNull(trackSelector.getCurrentMappedTrackInfo()); + } + setPreparedWithMedia(); + Assertions.checkNotNull(callbackHandler) + .post(() -> Assertions.checkNotNull(callback).onPrepared(this)); + } + + private void onMediaPreparationFailed(IOException error) { + Assertions.checkNotNull(callbackHandler) + .post(() -> Assertions.checkNotNull(callback).onPrepareError(this, error)); + } + + @RequiresNonNull({ + "trackGroupArrays", + "mappedTrackInfos", + "trackSelectionsByPeriodAndRenderer", + "immutableTrackSelectionsByPeriodAndRenderer", + "mediaPreparer", + "mediaPreparer.timeline", + "mediaPreparer.mediaPeriods" + }) + private void setPreparedWithMedia() { + isPreparedWithMedia = true; + } + + @EnsuresNonNull({ + "trackGroupArrays", + "mappedTrackInfos", + "trackSelectionsByPeriodAndRenderer", + "immutableTrackSelectionsByPeriodAndRenderer", + "mediaPreparer", + "mediaPreparer.timeline", + "mediaPreparer.mediaPeriods" + }) + @SuppressWarnings("nullness:contracts.postcondition.not.satisfied") + private void assertPreparedWithMedia() { + Assertions.checkState(isPreparedWithMedia); + } + + /** + * Runs the track selection for a given period index with the current parameters. The selected + * tracks will be added to {@link #trackSelectionsByPeriodAndRenderer}. + */ + // Intentional reference comparison of track group instances. + @SuppressWarnings("ReferenceEquality") + @RequiresNonNull({ + "trackGroupArrays", + "trackSelectionsByPeriodAndRenderer", + "mediaPreparer", + "mediaPreparer.timeline" + }) + private TrackSelectorResult runTrackSelection(int periodIndex) { + try { + TrackSelectorResult trackSelectorResult = + trackSelector.selectTracks( + rendererCapabilities, + trackGroupArrays[periodIndex], + new MediaPeriodId(mediaPreparer.timeline.getUidOfPeriod(periodIndex)), + mediaPreparer.timeline); + for (int i = 0; i < trackSelectorResult.length; i++) { + @Nullable TrackSelection newSelection = trackSelectorResult.selections.get(i); + if (newSelection == null) { + continue; + } + List existingSelectionList = + trackSelectionsByPeriodAndRenderer[periodIndex][i]; + boolean mergedWithExistingSelection = false; + for (int j = 0; j < existingSelectionList.size(); j++) { + TrackSelection existingSelection = existingSelectionList.get(j); + if (existingSelection.getTrackGroup() == newSelection.getTrackGroup()) { + // Merge with existing selection. + scratchSet.clear(); + for (int k = 0; k < existingSelection.length(); k++) { + scratchSet.put(existingSelection.getIndexInTrackGroup(k), 0); + } + for (int k = 0; k < newSelection.length(); k++) { + scratchSet.put(newSelection.getIndexInTrackGroup(k), 0); + } + int[] mergedTracks = new int[scratchSet.size()]; + for (int k = 0; k < scratchSet.size(); k++) { + mergedTracks[k] = scratchSet.keyAt(k); + } + existingSelectionList.set( + j, new DownloadTrackSelection(existingSelection.getTrackGroup(), mergedTracks)); + mergedWithExistingSelection = true; + break; + } + } + if (!mergedWithExistingSelection) { + existingSelectionList.add(newSelection); + } + } + return trackSelectorResult; + } catch (ExoPlaybackException e) { + // DefaultTrackSelector does not throw exceptions during track selection. + throw new UnsupportedOperationException(e); + } + } + + @Nullable + private static Constructor getConstructor(String className) { + try { + // LINT.IfChange + Class factoryClazz = + Class.forName(className).asSubclass(MediaSourceFactory.class); + return factoryClazz.getConstructor(Factory.class); + // LINT.ThenChange(../../../../../../../../proguard-rules.txt) + } catch (ClassNotFoundException e) { + // Expected if the app was built without the respective module. + return null; + } catch (NoSuchMethodException e) { + // Something is wrong with the library or the proguard configuration. + throw new IllegalStateException(e); + } + } + + private static MediaSource createMediaSourceInternal( + @Nullable Constructor constructor, + Uri uri, + Factory dataSourceFactory, + @Nullable DrmSessionManager drmSessionManager, + @Nullable List streamKeys) { + if (constructor == null) { + throw new IllegalStateException("Module missing to create media source."); + } + try { + MediaSourceFactory factory = constructor.newInstance(dataSourceFactory); + if (drmSessionManager != null) { + factory.setDrmSessionManager(drmSessionManager); + } + if (streamKeys != null) { + factory.setStreamKeys(streamKeys); + } + return Assertions.checkNotNull(factory.createMediaSource(uri)); + } catch (Exception e) { + throw new IllegalStateException("Failed to instantiate media source.", e); + } + } + + private static final class MediaPreparer + implements MediaSourceCaller, MediaPeriod.Callback, Handler.Callback { + + private static final int MESSAGE_PREPARE_SOURCE = 0; + private static final int MESSAGE_CHECK_FOR_FAILURE = 1; + private static final int MESSAGE_CONTINUE_LOADING = 2; + private static final int MESSAGE_RELEASE = 3; + + private static final int DOWNLOAD_HELPER_CALLBACK_MESSAGE_PREPARED = 0; + private static final int DOWNLOAD_HELPER_CALLBACK_MESSAGE_FAILED = 1; + + private final MediaSource mediaSource; + private final DownloadHelper downloadHelper; + private final Allocator allocator; + private final ArrayList pendingMediaPeriods; + private final Handler downloadHelperHandler; + private final HandlerThread mediaSourceThread; + private final Handler mediaSourceHandler; + + public @MonotonicNonNull Timeline timeline; + public MediaPeriod @MonotonicNonNull [] mediaPeriods; + + private boolean released; + + public MediaPreparer(MediaSource mediaSource, DownloadHelper downloadHelper) { + this.mediaSource = mediaSource; + this.downloadHelper = downloadHelper; + allocator = new DefaultAllocator(true, C.DEFAULT_BUFFER_SEGMENT_SIZE); + pendingMediaPeriods = new ArrayList<>(); + @SuppressWarnings("methodref.receiver.bound.invalid") + Handler downloadThreadHandler = Util.createHandler(this::handleDownloadHelperCallbackMessage); + this.downloadHelperHandler = downloadThreadHandler; + mediaSourceThread = new HandlerThread("DownloadHelper"); + mediaSourceThread.start(); + mediaSourceHandler = Util.createHandler(mediaSourceThread.getLooper(), /* callback= */ this); + mediaSourceHandler.sendEmptyMessage(MESSAGE_PREPARE_SOURCE); + } + + public void release() { + if (released) { + return; + } + released = true; + mediaSourceHandler.sendEmptyMessage(MESSAGE_RELEASE); + } + + // Handler.Callback + + @Override + public boolean handleMessage(Message msg) { + switch (msg.what) { + case MESSAGE_PREPARE_SOURCE: + mediaSource.prepareSource(/* caller= */ this, /* mediaTransferListener= */ null); + mediaSourceHandler.sendEmptyMessage(MESSAGE_CHECK_FOR_FAILURE); + return true; + case MESSAGE_CHECK_FOR_FAILURE: + try { + if (mediaPeriods == null) { + mediaSource.maybeThrowSourceInfoRefreshError(); + } else { + for (int i = 0; i < pendingMediaPeriods.size(); i++) { + pendingMediaPeriods.get(i).maybeThrowPrepareError(); + } + } + mediaSourceHandler.sendEmptyMessageDelayed( + MESSAGE_CHECK_FOR_FAILURE, /* delayMillis= */ 100); + } catch (IOException e) { + downloadHelperHandler + .obtainMessage(DOWNLOAD_HELPER_CALLBACK_MESSAGE_FAILED, /* obj= */ e) + .sendToTarget(); + } + return true; + case MESSAGE_CONTINUE_LOADING: + MediaPeriod mediaPeriod = (MediaPeriod) msg.obj; + if (pendingMediaPeriods.contains(mediaPeriod)) { + mediaPeriod.continueLoading(/* positionUs= */ 0); + } + return true; + case MESSAGE_RELEASE: + if (mediaPeriods != null) { + for (MediaPeriod period : mediaPeriods) { + mediaSource.releasePeriod(period); + } + } + mediaSource.releaseSource(this); + mediaSourceHandler.removeCallbacksAndMessages(null); + mediaSourceThread.quit(); + return true; + default: + return false; + } + } + + // MediaSource.MediaSourceCaller implementation. + + @Override + public void onSourceInfoRefreshed(MediaSource source, Timeline timeline) { + if (this.timeline != null) { + // Ignore dynamic updates. + return; + } + if (timeline.getWindow(/* windowIndex= */ 0, new Timeline.Window()).isLive) { + downloadHelperHandler + .obtainMessage( + DOWNLOAD_HELPER_CALLBACK_MESSAGE_FAILED, + /* obj= */ new LiveContentUnsupportedException()) + .sendToTarget(); + return; + } + this.timeline = timeline; + mediaPeriods = new MediaPeriod[timeline.getPeriodCount()]; + for (int i = 0; i < mediaPeriods.length; i++) { + MediaPeriod mediaPeriod = + mediaSource.createPeriod( + new MediaPeriodId(timeline.getUidOfPeriod(/* periodIndex= */ i)), + allocator, + /* startPositionUs= */ 0); + mediaPeriods[i] = mediaPeriod; + pendingMediaPeriods.add(mediaPeriod); + } + for (MediaPeriod mediaPeriod : mediaPeriods) { + mediaPeriod.prepare(/* callback= */ this, /* positionUs= */ 0); + } + } + + // MediaPeriod.Callback implementation. + + @Override + public void onPrepared(MediaPeriod mediaPeriod) { + pendingMediaPeriods.remove(mediaPeriod); + if (pendingMediaPeriods.isEmpty()) { + mediaSourceHandler.removeMessages(MESSAGE_CHECK_FOR_FAILURE); + downloadHelperHandler.sendEmptyMessage(DOWNLOAD_HELPER_CALLBACK_MESSAGE_PREPARED); + } + } + + @Override + public void onContinueLoadingRequested(MediaPeriod mediaPeriod) { + if (pendingMediaPeriods.contains(mediaPeriod)) { + mediaSourceHandler.obtainMessage(MESSAGE_CONTINUE_LOADING, mediaPeriod).sendToTarget(); + } + } + + private boolean handleDownloadHelperCallbackMessage(Message msg) { + if (released) { + // Stale message. + return false; + } + switch (msg.what) { + case DOWNLOAD_HELPER_CALLBACK_MESSAGE_PREPARED: + downloadHelper.onMediaPrepared(); + return true; + case DOWNLOAD_HELPER_CALLBACK_MESSAGE_FAILED: + release(); + downloadHelper.onMediaPreparationFailed((IOException) Util.castNonNull(msg.obj)); + return true; + default: + return false; + } + } + } + + private static final class DownloadTrackSelection extends BaseTrackSelection { + + private static final class Factory implements TrackSelection.Factory { + + @Override + public @NullableType TrackSelection[] createTrackSelections( + @NullableType Definition[] definitions, BandwidthMeter bandwidthMeter) { + @NullableType TrackSelection[] selections = new TrackSelection[definitions.length]; + for (int i = 0; i < definitions.length; i++) { + selections[i] = + definitions[i] == null + ? null + : new DownloadTrackSelection(definitions[i].group, definitions[i].tracks); + } + return selections; + } + } + + public DownloadTrackSelection(TrackGroup trackGroup, int[] tracks) { + super(trackGroup, tracks); + } + + @Override + public int getSelectedIndex() { + return 0; + } + + @Override + public int getSelectionReason() { + return C.SELECTION_REASON_UNKNOWN; + } + + @Nullable + @Override + public Object getSelectionData() { + return null; + } + + @Override + public void updateSelectedTrack( + long playbackPositionUs, + long bufferedDurationUs, + long availableDurationUs, + List queue, + MediaChunkIterator[] mediaChunkIterators) { + // Do nothing. + } + } + + private static final class DummyBandwidthMeter implements BandwidthMeter { + + @Override + public long getBitrateEstimate() { + return 0; + } + + @Nullable + @Override + public TransferListener getTransferListener() { + return null; + } + + @Override + public void addEventListener(Handler eventHandler, EventListener eventListener) { + // Do nothing. + } + + @Override + public void removeEventListener(EventListener eventListener) { + // Do nothing. + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadIndex.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadIndex.java new file mode 100644 index 0000000000..5fbb3e7c0b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadIndex.java @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import androidx.annotation.Nullable; +import androidx.annotation.WorkerThread; +import java.io.IOException; + +/** An index of {@link Download Downloads}. */ +@WorkerThread +public interface DownloadIndex { + + /** + * Returns the {@link Download} with the given {@code id}, or null. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param id ID of a {@link Download}. + * @return The {@link Download} with the given {@code id}, or null if a download state with this + * id doesn't exist. + * @throws IOException If an error occurs reading the state. + */ + @Nullable + Download getDownload(String id) throws IOException; + + /** + * Returns a {@link DownloadCursor} to {@link Download}s with the given {@code states}. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param states Returns only the {@link Download}s with this states. If empty, returns all. + * @return A cursor to {@link Download}s with the given {@code states}. + * @throws IOException If an error occurs reading the state. + */ + DownloadCursor getDownloads(@Download.State int... states) throws IOException; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadManager.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadManager.java new file mode 100644 index 0000000000..a6ace12343 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadManager.java @@ -0,0 +1,1346 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.FAILURE_REASON_NONE; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.FAILURE_REASON_UNKNOWN; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.STATE_COMPLETED; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.STATE_DOWNLOADING; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.STATE_FAILED; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.STATE_QUEUED; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.STATE_REMOVING; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.STATE_RESTARTING; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.STATE_STOPPED; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.STOP_REASON_NONE; + +import android.content.Context; +import android.os.Handler; +import android.os.HandlerThread; +import android.os.Looper; +import android.os.Message; +import androidx.annotation.CheckResult; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.DatabaseProvider; +import org.mozilla.thirdparty.com.google.android.exoplayer2.scheduler.Requirements; +import org.mozilla.thirdparty.com.google.android.exoplayer2.scheduler.RequirementsWatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource.Factory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.Cache; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheEvictor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.NoOpCacheEvictor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.concurrent.CopyOnWriteArraySet; + +/** + * Manages downloads. + * + *

Normally a download manager should be accessed via a {@link DownloadService}. When a download + * manager is used directly instead, downloads will be initially paused and so must be resumed by + * calling {@link #resumeDownloads()}. + * + *

A download manager instance must be accessed only from the thread that created it, unless that + * thread does not have a {@link Looper}. In that case, it must be accessed only from the + * application's main thread. Registered listeners will be called on the same thread. + */ +public final class DownloadManager { + + /** Listener for {@link DownloadManager} events. */ + public interface Listener { + + /** + * Called when all downloads have been restored. + * + * @param downloadManager The reporting instance. + */ + default void onInitialized(DownloadManager downloadManager) {} + + /** + * Called when downloads are ({@link #pauseDownloads() paused} or {@link #resumeDownloads() + * resumed}. + * + * @param downloadManager The reporting instance. + * @param downloadsPaused Whether downloads are currently paused. + */ + default void onDownloadsPausedChanged( + DownloadManager downloadManager, boolean downloadsPaused) {} + + /** + * Called when the state of a download changes. + * + * @param downloadManager The reporting instance. + * @param download The state of the download. + */ + default void onDownloadChanged(DownloadManager downloadManager, Download download) {} + + /** + * Called when a download is removed. + * + * @param downloadManager The reporting instance. + * @param download The last state of the download before it was removed. + */ + default void onDownloadRemoved(DownloadManager downloadManager, Download download) {} + + /** + * Called when there is no active download left. + * + * @param downloadManager The reporting instance. + */ + default void onIdle(DownloadManager downloadManager) {} + + /** + * Called when the download requirements state changed. + * + * @param downloadManager The reporting instance. + * @param requirements Requirements needed to be met to start downloads. + * @param notMetRequirements {@link Requirements.RequirementFlags RequirementFlags} that are not + * met, or 0. + */ + default void onRequirementsStateChanged( + DownloadManager downloadManager, + Requirements requirements, + @Requirements.RequirementFlags int notMetRequirements) {} + + /** + * Called when there is a change in whether this manager has one or more downloads that are not + * progressing for the sole reason that the {@link #getRequirements() Requirements} are not met. + * See {@link #isWaitingForRequirements()} for more information. + * + * @param downloadManager The reporting instance. + * @param waitingForRequirements Whether this manager has one or more downloads that are not + * progressing for the sole reason that the {@link #getRequirements() Requirements} are not + * met. + */ + default void onWaitingForRequirementsChanged( + DownloadManager downloadManager, boolean waitingForRequirements) {} + } + + /** The default maximum number of parallel downloads. */ + public static final int DEFAULT_MAX_PARALLEL_DOWNLOADS = 3; + /** The default minimum number of times a download must be retried before failing. */ + public static final int DEFAULT_MIN_RETRY_COUNT = 5; + /** The default requirement is that the device has network connectivity. */ + public static final Requirements DEFAULT_REQUIREMENTS = new Requirements(Requirements.NETWORK); + + // Messages posted to the main handler. + private static final int MSG_INITIALIZED = 0; + private static final int MSG_PROCESSED = 1; + private static final int MSG_DOWNLOAD_UPDATE = 2; + + // Messages posted to the background handler. + private static final int MSG_INITIALIZE = 0; + private static final int MSG_SET_DOWNLOADS_PAUSED = 1; + private static final int MSG_SET_NOT_MET_REQUIREMENTS = 2; + private static final int MSG_SET_STOP_REASON = 3; + private static final int MSG_SET_MAX_PARALLEL_DOWNLOADS = 4; + private static final int MSG_SET_MIN_RETRY_COUNT = 5; + private static final int MSG_ADD_DOWNLOAD = 6; + private static final int MSG_REMOVE_DOWNLOAD = 7; + private static final int MSG_REMOVE_ALL_DOWNLOADS = 8; + private static final int MSG_TASK_STOPPED = 9; + private static final int MSG_CONTENT_LENGTH_CHANGED = 10; + private static final int MSG_UPDATE_PROGRESS = 11; + private static final int MSG_RELEASE = 12; + + private static final String TAG = "DownloadManager"; + + private final Context context; + private final WritableDownloadIndex downloadIndex; + private final Handler mainHandler; + private final InternalHandler internalHandler; + private final RequirementsWatcher.Listener requirementsListener; + private final CopyOnWriteArraySet listeners; + + private int pendingMessages; + private int activeTaskCount; + private boolean initialized; + private boolean downloadsPaused; + private int maxParallelDownloads; + private int minRetryCount; + private int notMetRequirements; + private boolean waitingForRequirements; + private List downloads; + private RequirementsWatcher requirementsWatcher; + + /** + * Constructs a {@link DownloadManager}. + * + * @param context Any context. + * @param databaseProvider Provides the SQLite database in which downloads are persisted. + * @param cache A cache to be used to store downloaded data. The cache should be configured with + * an {@link CacheEvictor} that will not evict downloaded content, for example {@link + * NoOpCacheEvictor}. + * @param upstreamFactory A {@link Factory} for creating {@link DataSource}s for downloading data. + */ + public DownloadManager( + Context context, DatabaseProvider databaseProvider, Cache cache, Factory upstreamFactory) { + this( + context, + new DefaultDownloadIndex(databaseProvider), + new DefaultDownloaderFactory(new DownloaderConstructorHelper(cache, upstreamFactory))); + } + + /** + * Constructs a {@link DownloadManager}. + * + * @param context Any context. + * @param downloadIndex The download index used to hold the download information. + * @param downloaderFactory A factory for creating {@link Downloader}s. + */ + public DownloadManager( + Context context, WritableDownloadIndex downloadIndex, DownloaderFactory downloaderFactory) { + this.context = context.getApplicationContext(); + this.downloadIndex = downloadIndex; + + maxParallelDownloads = DEFAULT_MAX_PARALLEL_DOWNLOADS; + minRetryCount = DEFAULT_MIN_RETRY_COUNT; + downloadsPaused = true; + downloads = Collections.emptyList(); + listeners = new CopyOnWriteArraySet<>(); + + @SuppressWarnings("methodref.receiver.bound.invalid") + Handler mainHandler = Util.createHandler(this::handleMainMessage); + this.mainHandler = mainHandler; + HandlerThread internalThread = new HandlerThread("DownloadManager file i/o"); + internalThread.start(); + internalHandler = + new InternalHandler( + internalThread, + downloadIndex, + downloaderFactory, + mainHandler, + maxParallelDownloads, + minRetryCount, + downloadsPaused); + + @SuppressWarnings("methodref.receiver.bound.invalid") + RequirementsWatcher.Listener requirementsListener = this::onRequirementsStateChanged; + this.requirementsListener = requirementsListener; + requirementsWatcher = + new RequirementsWatcher(context, requirementsListener, DEFAULT_REQUIREMENTS); + notMetRequirements = requirementsWatcher.start(); + + pendingMessages = 1; + internalHandler + .obtainMessage(MSG_INITIALIZE, notMetRequirements, /* unused */ 0) + .sendToTarget(); + } + + /** Returns whether the manager has completed initialization. */ + public boolean isInitialized() { + return initialized; + } + + /** + * Returns whether the manager is currently idle. The manager is idle if all downloads are in a + * terminal state (i.e. completed or failed), or if no progress can be made (e.g. because the + * download requirements are not met). + */ + public boolean isIdle() { + return activeTaskCount == 0 && pendingMessages == 0; + } + + /** + * Returns whether this manager has one or more downloads that are not progressing for the sole + * reason that the {@link #getRequirements() Requirements} are not met. This is true if: + * + *

    + *
  • The {@link #getRequirements() Requirements} are not met. + *
  • The downloads are not paused (i.e. {@link #getDownloadsPaused()} is {@code false}). + *
  • There are downloads in the {@link Download#STATE_QUEUED queued state}. + *
+ */ + public boolean isWaitingForRequirements() { + return waitingForRequirements; + } + + /** + * Adds a {@link Listener}. + * + * @param listener The listener to be added. + */ + public void addListener(Listener listener) { + listeners.add(listener); + } + + /** + * Removes a {@link Listener}. + * + * @param listener The listener to be removed. + */ + public void removeListener(Listener listener) { + listeners.remove(listener); + } + + /** Returns the requirements needed to be met to progress. */ + public Requirements getRequirements() { + return requirementsWatcher.getRequirements(); + } + + /** + * Returns the requirements needed for downloads to progress that are not currently met. + * + * @return The not met {@link Requirements.RequirementFlags}, or 0 if all requirements are met. + */ + @Requirements.RequirementFlags + public int getNotMetRequirements() { + return notMetRequirements; + } + + /** + * Sets the requirements that need to be met for downloads to progress. + * + * @param requirements A {@link Requirements}. + */ + public void setRequirements(Requirements requirements) { + if (requirements.equals(requirementsWatcher.getRequirements())) { + return; + } + requirementsWatcher.stop(); + requirementsWatcher = new RequirementsWatcher(context, requirementsListener, requirements); + int notMetRequirements = requirementsWatcher.start(); + onRequirementsStateChanged(requirementsWatcher, notMetRequirements); + } + + /** Returns the maximum number of parallel downloads. */ + public int getMaxParallelDownloads() { + return maxParallelDownloads; + } + + /** + * Sets the maximum number of parallel downloads. + * + * @param maxParallelDownloads The maximum number of parallel downloads. Must be greater than 0. + */ + public void setMaxParallelDownloads(int maxParallelDownloads) { + Assertions.checkArgument(maxParallelDownloads > 0); + if (this.maxParallelDownloads == maxParallelDownloads) { + return; + } + this.maxParallelDownloads = maxParallelDownloads; + pendingMessages++; + internalHandler + .obtainMessage(MSG_SET_MAX_PARALLEL_DOWNLOADS, maxParallelDownloads, /* unused */ 0) + .sendToTarget(); + } + + /** + * Returns the minimum number of times that a download will be retried. A download will fail if + * the specified number of retries is exceeded without any progress being made. + */ + public int getMinRetryCount() { + return minRetryCount; + } + + /** + * Sets the minimum number of times that a download will be retried. A download will fail if the + * specified number of retries is exceeded without any progress being made. + * + * @param minRetryCount The minimum number of times that a download will be retried. + */ + public void setMinRetryCount(int minRetryCount) { + Assertions.checkArgument(minRetryCount >= 0); + if (this.minRetryCount == minRetryCount) { + return; + } + this.minRetryCount = minRetryCount; + pendingMessages++; + internalHandler + .obtainMessage(MSG_SET_MIN_RETRY_COUNT, minRetryCount, /* unused */ 0) + .sendToTarget(); + } + + /** Returns the used {@link DownloadIndex}. */ + public DownloadIndex getDownloadIndex() { + return downloadIndex; + } + + /** + * Returns current downloads. Downloads that are in terminal states (i.e. completed or failed) are + * not included. To query all downloads including those in terminal states, use {@link + * #getDownloadIndex()} instead. + */ + public List getCurrentDownloads() { + return downloads; + } + + /** Returns whether downloads are currently paused. */ + public boolean getDownloadsPaused() { + return downloadsPaused; + } + + /** + * Resumes downloads. + * + *

If the {@link #setRequirements(Requirements) Requirements} are met up to {@link + * #getMaxParallelDownloads() maxParallelDownloads} will be started, excluding those with non-zero + * {@link Download#stopReason stopReasons}. + */ + public void resumeDownloads() { + setDownloadsPaused(/* downloadsPaused= */ false); + } + + /** + * Pauses downloads. Downloads that would otherwise be making progress will transition to {@link + * Download#STATE_QUEUED}. + */ + public void pauseDownloads() { + setDownloadsPaused(/* downloadsPaused= */ true); + } + + /** + * Sets the stop reason for one or all downloads. To clear the stop reason, pass {@link + * Download#STOP_REASON_NONE}. + * + * @param id The content id of the download to update, or {@code null} to set the stop reason for + * all downloads. + * @param stopReason The stop reason, or {@link Download#STOP_REASON_NONE}. + */ + public void setStopReason(@Nullable String id, int stopReason) { + pendingMessages++; + internalHandler + .obtainMessage(MSG_SET_STOP_REASON, stopReason, /* unused */ 0, id) + .sendToTarget(); + } + + /** + * Adds a download defined by the given request. + * + * @param request The download request. + */ + public void addDownload(DownloadRequest request) { + addDownload(request, STOP_REASON_NONE); + } + + /** + * Adds a download defined by the given request and with the specified stop reason. + * + * @param request The download request. + * @param stopReason An initial stop reason for the download, or {@link Download#STOP_REASON_NONE} + * if the download should be started. + */ + public void addDownload(DownloadRequest request, int stopReason) { + pendingMessages++; + internalHandler + .obtainMessage(MSG_ADD_DOWNLOAD, stopReason, /* unused */ 0, request) + .sendToTarget(); + } + + /** + * Cancels the download with the {@code id} and removes all downloaded data. + * + * @param id The unique content id of the download to be started. + */ + public void removeDownload(String id) { + pendingMessages++; + internalHandler.obtainMessage(MSG_REMOVE_DOWNLOAD, id).sendToTarget(); + } + + /** Cancels all pending downloads and removes all downloaded data. */ + public void removeAllDownloads() { + pendingMessages++; + internalHandler.obtainMessage(MSG_REMOVE_ALL_DOWNLOADS).sendToTarget(); + } + + /** + * Stops the downloads and releases resources. Waits until the downloads are persisted to the + * download index. The manager must not be accessed after this method has been called. + */ + public void release() { + synchronized (internalHandler) { + if (internalHandler.released) { + return; + } + internalHandler.sendEmptyMessage(MSG_RELEASE); + boolean wasInterrupted = false; + while (!internalHandler.released) { + try { + internalHandler.wait(); + } catch (InterruptedException e) { + wasInterrupted = true; + } + } + if (wasInterrupted) { + // Restore the interrupted status. + Thread.currentThread().interrupt(); + } + mainHandler.removeCallbacksAndMessages(/* token= */ null); + // Reset state. + downloads = Collections.emptyList(); + pendingMessages = 0; + activeTaskCount = 0; + initialized = false; + notMetRequirements = 0; + waitingForRequirements = false; + } + } + + private void setDownloadsPaused(boolean downloadsPaused) { + if (this.downloadsPaused == downloadsPaused) { + return; + } + this.downloadsPaused = downloadsPaused; + pendingMessages++; + internalHandler + .obtainMessage(MSG_SET_DOWNLOADS_PAUSED, downloadsPaused ? 1 : 0, /* unused */ 0) + .sendToTarget(); + boolean waitingForRequirementsChanged = updateWaitingForRequirements(); + for (Listener listener : listeners) { + listener.onDownloadsPausedChanged(this, downloadsPaused); + } + if (waitingForRequirementsChanged) { + notifyWaitingForRequirementsChanged(); + } + } + + private void onRequirementsStateChanged( + RequirementsWatcher requirementsWatcher, + @Requirements.RequirementFlags int notMetRequirements) { + Requirements requirements = requirementsWatcher.getRequirements(); + if (this.notMetRequirements != notMetRequirements) { + this.notMetRequirements = notMetRequirements; + pendingMessages++; + internalHandler + .obtainMessage(MSG_SET_NOT_MET_REQUIREMENTS, notMetRequirements, /* unused */ 0) + .sendToTarget(); + } + boolean waitingForRequirementsChanged = updateWaitingForRequirements(); + for (Listener listener : listeners) { + listener.onRequirementsStateChanged(this, requirements, notMetRequirements); + } + if (waitingForRequirementsChanged) { + notifyWaitingForRequirementsChanged(); + } + } + + private boolean updateWaitingForRequirements() { + boolean waitingForRequirements = false; + if (!downloadsPaused && notMetRequirements != 0) { + for (int i = 0; i < downloads.size(); i++) { + if (downloads.get(i).state == STATE_QUEUED) { + waitingForRequirements = true; + break; + } + } + } + boolean waitingForRequirementsChanged = this.waitingForRequirements != waitingForRequirements; + this.waitingForRequirements = waitingForRequirements; + return waitingForRequirementsChanged; + } + + private void notifyWaitingForRequirementsChanged() { + for (Listener listener : listeners) { + listener.onWaitingForRequirementsChanged(this, waitingForRequirements); + } + } + + // Main thread message handling. + + @SuppressWarnings("unchecked") + private boolean handleMainMessage(Message message) { + switch (message.what) { + case MSG_INITIALIZED: + List downloads = (List) message.obj; + onInitialized(downloads); + break; + case MSG_DOWNLOAD_UPDATE: + DownloadUpdate update = (DownloadUpdate) message.obj; + onDownloadUpdate(update); + break; + case MSG_PROCESSED: + int processedMessageCount = message.arg1; + int activeTaskCount = message.arg2; + onMessageProcessed(processedMessageCount, activeTaskCount); + break; + default: + throw new IllegalStateException(); + } + return true; + } + + private void onInitialized(List downloads) { + initialized = true; + this.downloads = Collections.unmodifiableList(downloads); + boolean waitingForRequirementsChanged = updateWaitingForRequirements(); + for (Listener listener : listeners) { + listener.onInitialized(DownloadManager.this); + } + if (waitingForRequirementsChanged) { + notifyWaitingForRequirementsChanged(); + } + } + + private void onDownloadUpdate(DownloadUpdate update) { + downloads = Collections.unmodifiableList(update.downloads); + Download updatedDownload = update.download; + boolean waitingForRequirementsChanged = updateWaitingForRequirements(); + if (update.isRemove) { + for (Listener listener : listeners) { + listener.onDownloadRemoved(this, updatedDownload); + } + } else { + for (Listener listener : listeners) { + listener.onDownloadChanged(this, updatedDownload); + } + } + if (waitingForRequirementsChanged) { + notifyWaitingForRequirementsChanged(); + } + } + + private void onMessageProcessed(int processedMessageCount, int activeTaskCount) { + this.pendingMessages -= processedMessageCount; + this.activeTaskCount = activeTaskCount; + if (isIdle()) { + for (Listener listener : listeners) { + listener.onIdle(this); + } + } + } + + /* package */ static Download mergeRequest( + Download download, DownloadRequest request, int stopReason, long nowMs) { + @Download.State int state = download.state; + // Treat the merge as creating a new download if we're currently removing the existing one, or + // if the existing download is in a terminal state. Else treat the merge as updating the + // existing download. + long startTimeMs = + state == STATE_REMOVING || download.isTerminalState() ? nowMs : download.startTimeMs; + if (state == STATE_REMOVING || state == STATE_RESTARTING) { + state = STATE_RESTARTING; + } else if (stopReason != STOP_REASON_NONE) { + state = STATE_STOPPED; + } else { + state = STATE_QUEUED; + } + return new Download( + download.request.copyWithMergedRequest(request), + state, + startTimeMs, + /* updateTimeMs= */ nowMs, + /* contentLength= */ C.LENGTH_UNSET, + stopReason, + FAILURE_REASON_NONE); + } + + private static final class InternalHandler extends Handler { + + private static final int UPDATE_PROGRESS_INTERVAL_MS = 5000; + + public boolean released; + + private final HandlerThread thread; + private final WritableDownloadIndex downloadIndex; + private final DownloaderFactory downloaderFactory; + private final Handler mainHandler; + private final ArrayList downloads; + private final HashMap activeTasks; + + @Requirements.RequirementFlags private int notMetRequirements; + private boolean downloadsPaused; + private int maxParallelDownloads; + private int minRetryCount; + private int activeDownloadTaskCount; + + public InternalHandler( + HandlerThread thread, + WritableDownloadIndex downloadIndex, + DownloaderFactory downloaderFactory, + Handler mainHandler, + int maxParallelDownloads, + int minRetryCount, + boolean downloadsPaused) { + super(thread.getLooper()); + this.thread = thread; + this.downloadIndex = downloadIndex; + this.downloaderFactory = downloaderFactory; + this.mainHandler = mainHandler; + this.maxParallelDownloads = maxParallelDownloads; + this.minRetryCount = minRetryCount; + this.downloadsPaused = downloadsPaused; + downloads = new ArrayList<>(); + activeTasks = new HashMap<>(); + } + + @Override + public void handleMessage(Message message) { + boolean processedExternalMessage = true; + switch (message.what) { + case MSG_INITIALIZE: + int notMetRequirements = message.arg1; + initialize(notMetRequirements); + break; + case MSG_SET_DOWNLOADS_PAUSED: + boolean downloadsPaused = message.arg1 != 0; + setDownloadsPaused(downloadsPaused); + break; + case MSG_SET_NOT_MET_REQUIREMENTS: + notMetRequirements = message.arg1; + setNotMetRequirements(notMetRequirements); + break; + case MSG_SET_STOP_REASON: + String id = (String) message.obj; + int stopReason = message.arg1; + setStopReason(id, stopReason); + break; + case MSG_SET_MAX_PARALLEL_DOWNLOADS: + int maxParallelDownloads = message.arg1; + setMaxParallelDownloads(maxParallelDownloads); + break; + case MSG_SET_MIN_RETRY_COUNT: + int minRetryCount = message.arg1; + setMinRetryCount(minRetryCount); + break; + case MSG_ADD_DOWNLOAD: + DownloadRequest request = (DownloadRequest) message.obj; + stopReason = message.arg1; + addDownload(request, stopReason); + break; + case MSG_REMOVE_DOWNLOAD: + id = (String) message.obj; + removeDownload(id); + break; + case MSG_REMOVE_ALL_DOWNLOADS: + removeAllDownloads(); + break; + case MSG_TASK_STOPPED: + Task task = (Task) message.obj; + onTaskStopped(task); + processedExternalMessage = false; // This message is posted internally. + break; + case MSG_CONTENT_LENGTH_CHANGED: + task = (Task) message.obj; + onContentLengthChanged(task); + return; // No need to post back to mainHandler. + case MSG_UPDATE_PROGRESS: + updateProgress(); + return; // No need to post back to mainHandler. + case MSG_RELEASE: + release(); + return; // No need to post back to mainHandler. + default: + throw new IllegalStateException(); + } + mainHandler + .obtainMessage(MSG_PROCESSED, processedExternalMessage ? 1 : 0, activeTasks.size()) + .sendToTarget(); + } + + private void initialize(int notMetRequirements) { + this.notMetRequirements = notMetRequirements; + DownloadCursor cursor = null; + try { + downloadIndex.setDownloadingStatesToQueued(); + cursor = + downloadIndex.getDownloads( + STATE_QUEUED, STATE_STOPPED, STATE_DOWNLOADING, STATE_REMOVING, STATE_RESTARTING); + while (cursor.moveToNext()) { + downloads.add(cursor.getDownload()); + } + } catch (IOException e) { + Log.e(TAG, "Failed to load index.", e); + downloads.clear(); + } finally { + Util.closeQuietly(cursor); + } + // A copy must be used for the message to ensure that subsequent changes to the downloads list + // are not visible to the main thread when it processes the message. + ArrayList downloadsForMessage = new ArrayList<>(downloads); + mainHandler.obtainMessage(MSG_INITIALIZED, downloadsForMessage).sendToTarget(); + syncTasks(); + } + + private void setDownloadsPaused(boolean downloadsPaused) { + this.downloadsPaused = downloadsPaused; + syncTasks(); + } + + private void setNotMetRequirements(@Requirements.RequirementFlags int notMetRequirements) { + this.notMetRequirements = notMetRequirements; + syncTasks(); + } + + private void setStopReason(@Nullable String id, int stopReason) { + if (id == null) { + for (int i = 0; i < downloads.size(); i++) { + setStopReason(downloads.get(i), stopReason); + } + try { + // Set the stop reason for downloads in terminal states as well. + downloadIndex.setStopReason(stopReason); + } catch (IOException e) { + Log.e(TAG, "Failed to set manual stop reason", e); + } + } else { + @Nullable Download download = getDownload(id, /* loadFromIndex= */ false); + if (download != null) { + setStopReason(download, stopReason); + } else { + try { + // Set the stop reason if the download is in a terminal state. + downloadIndex.setStopReason(id, stopReason); + } catch (IOException e) { + Log.e(TAG, "Failed to set manual stop reason: " + id, e); + } + } + } + syncTasks(); + } + + private void setStopReason(Download download, int stopReason) { + if (stopReason == STOP_REASON_NONE) { + if (download.state == STATE_STOPPED) { + putDownloadWithState(download, STATE_QUEUED); + } + } else if (stopReason != download.stopReason) { + @Download.State int state = download.state; + if (state == STATE_QUEUED || state == STATE_DOWNLOADING) { + state = STATE_STOPPED; + } + putDownload( + new Download( + download.request, + state, + download.startTimeMs, + /* updateTimeMs= */ System.currentTimeMillis(), + download.contentLength, + stopReason, + FAILURE_REASON_NONE, + download.progress)); + } + } + + private void setMaxParallelDownloads(int maxParallelDownloads) { + this.maxParallelDownloads = maxParallelDownloads; + syncTasks(); + } + + private void setMinRetryCount(int minRetryCount) { + this.minRetryCount = minRetryCount; + } + + private void addDownload(DownloadRequest request, int stopReason) { + @Nullable Download download = getDownload(request.id, /* loadFromIndex= */ true); + long nowMs = System.currentTimeMillis(); + if (download != null) { + putDownload(mergeRequest(download, request, stopReason, nowMs)); + } else { + putDownload( + new Download( + request, + stopReason != STOP_REASON_NONE ? STATE_STOPPED : STATE_QUEUED, + /* startTimeMs= */ nowMs, + /* updateTimeMs= */ nowMs, + /* contentLength= */ C.LENGTH_UNSET, + stopReason, + FAILURE_REASON_NONE)); + } + syncTasks(); + } + + private void removeDownload(String id) { + @Nullable Download download = getDownload(id, /* loadFromIndex= */ true); + if (download == null) { + Log.e(TAG, "Failed to remove nonexistent download: " + id); + return; + } + putDownloadWithState(download, STATE_REMOVING); + syncTasks(); + } + + private void removeAllDownloads() { + List terminalDownloads = new ArrayList<>(); + try (DownloadCursor cursor = downloadIndex.getDownloads(STATE_COMPLETED, STATE_FAILED)) { + while (cursor.moveToNext()) { + terminalDownloads.add(cursor.getDownload()); + } + } catch (IOException e) { + Log.e(TAG, "Failed to load downloads."); + } + for (int i = 0; i < downloads.size(); i++) { + downloads.set(i, copyDownloadWithState(downloads.get(i), STATE_REMOVING)); + } + for (int i = 0; i < terminalDownloads.size(); i++) { + downloads.add(copyDownloadWithState(terminalDownloads.get(i), STATE_REMOVING)); + } + Collections.sort(downloads, InternalHandler::compareStartTimes); + try { + downloadIndex.setStatesToRemoving(); + } catch (IOException e) { + Log.e(TAG, "Failed to update index.", e); + } + ArrayList updateList = new ArrayList<>(downloads); + for (int i = 0; i < downloads.size(); i++) { + DownloadUpdate update = + new DownloadUpdate(downloads.get(i), /* isRemove= */ false, updateList); + mainHandler.obtainMessage(MSG_DOWNLOAD_UPDATE, update).sendToTarget(); + } + syncTasks(); + } + + private void release() { + for (Task task : activeTasks.values()) { + task.cancel(/* released= */ true); + } + try { + downloadIndex.setDownloadingStatesToQueued(); + } catch (IOException e) { + Log.e(TAG, "Failed to update index.", e); + } + downloads.clear(); + thread.quit(); + synchronized (this) { + released = true; + notifyAll(); + } + } + + // Start and cancel tasks based on the current download and manager states. + + private void syncTasks() { + int accumulatingDownloadTaskCount = 0; + for (int i = 0; i < downloads.size(); i++) { + Download download = downloads.get(i); + @Nullable Task activeTask = activeTasks.get(download.request.id); + switch (download.state) { + case STATE_STOPPED: + syncStoppedDownload(activeTask); + break; + case STATE_QUEUED: + activeTask = syncQueuedDownload(activeTask, download); + break; + case STATE_DOWNLOADING: + Assertions.checkNotNull(activeTask); + syncDownloadingDownload(activeTask, download, accumulatingDownloadTaskCount); + break; + case STATE_REMOVING: + case STATE_RESTARTING: + syncRemovingDownload(activeTask, download); + break; + case STATE_COMPLETED: + case STATE_FAILED: + default: + throw new IllegalStateException(); + } + if (activeTask != null && !activeTask.isRemove) { + accumulatingDownloadTaskCount++; + } + } + } + + private void syncStoppedDownload(@Nullable Task activeTask) { + if (activeTask != null) { + // We have a task, which must be a download task. Cancel it. + Assertions.checkState(!activeTask.isRemove); + activeTask.cancel(/* released= */ false); + } + } + + @Nullable + @CheckResult + private Task syncQueuedDownload(@Nullable Task activeTask, Download download) { + if (activeTask != null) { + // We have a task, which must be a download task. If the download state is queued we need to + // cancel it and start a new one, since a new request has been merged into the download. + Assertions.checkState(!activeTask.isRemove); + activeTask.cancel(/* released= */ false); + return activeTask; + } + + if (!canDownloadsRun() || activeDownloadTaskCount >= maxParallelDownloads) { + return null; + } + + // We can start a download task. + download = putDownloadWithState(download, STATE_DOWNLOADING); + Downloader downloader = downloaderFactory.createDownloader(download.request); + activeTask = + new Task( + download.request, + downloader, + download.progress, + /* isRemove= */ false, + minRetryCount, + /* internalHandler= */ this); + activeTasks.put(download.request.id, activeTask); + if (activeDownloadTaskCount++ == 0) { + sendEmptyMessageDelayed(MSG_UPDATE_PROGRESS, UPDATE_PROGRESS_INTERVAL_MS); + } + activeTask.start(); + return activeTask; + } + + private void syncDownloadingDownload( + Task activeTask, Download download, int accumulatingDownloadTaskCount) { + Assertions.checkState(!activeTask.isRemove); + if (!canDownloadsRun() || accumulatingDownloadTaskCount >= maxParallelDownloads) { + putDownloadWithState(download, STATE_QUEUED); + activeTask.cancel(/* released= */ false); + } + } + + private void syncRemovingDownload(@Nullable Task activeTask, Download download) { + if (activeTask != null) { + if (!activeTask.isRemove) { + // Cancel the downloading task. + activeTask.cancel(/* released= */ false); + } + // The activeTask is either a remove task, or a downloading task that we just cancelled. In + // the latter case we need to wait for the task to stop before we start a remove task. + return; + } + + // We can start a remove task. + Downloader downloader = downloaderFactory.createDownloader(download.request); + activeTask = + new Task( + download.request, + downloader, + download.progress, + /* isRemove= */ true, + minRetryCount, + /* internalHandler= */ this); + activeTasks.put(download.request.id, activeTask); + activeTask.start(); + } + + // Task event processing. + + private void onContentLengthChanged(Task task) { + String downloadId = task.request.id; + long contentLength = task.contentLength; + Download download = + Assertions.checkNotNull(getDownload(downloadId, /* loadFromIndex= */ false)); + if (contentLength == download.contentLength || contentLength == C.LENGTH_UNSET) { + return; + } + putDownload( + new Download( + download.request, + download.state, + download.startTimeMs, + /* updateTimeMs= */ System.currentTimeMillis(), + contentLength, + download.stopReason, + download.failureReason, + download.progress)); + } + + private void onTaskStopped(Task task) { + String downloadId = task.request.id; + activeTasks.remove(downloadId); + + boolean isRemove = task.isRemove; + if (!isRemove && --activeDownloadTaskCount == 0) { + removeMessages(MSG_UPDATE_PROGRESS); + } + + if (task.isCanceled) { + syncTasks(); + return; + } + + @Nullable Throwable finalError = task.finalError; + if (finalError != null) { + Log.e(TAG, "Task failed: " + task.request + ", " + isRemove, finalError); + } + + Download download = + Assertions.checkNotNull(getDownload(downloadId, /* loadFromIndex= */ false)); + switch (download.state) { + case STATE_DOWNLOADING: + Assertions.checkState(!isRemove); + onDownloadTaskStopped(download, finalError); + break; + case STATE_REMOVING: + case STATE_RESTARTING: + Assertions.checkState(isRemove); + onRemoveTaskStopped(download); + break; + case STATE_QUEUED: + case STATE_STOPPED: + case STATE_COMPLETED: + case STATE_FAILED: + default: + throw new IllegalStateException(); + } + + syncTasks(); + } + + private void onDownloadTaskStopped(Download download, @Nullable Throwable finalError) { + download = + new Download( + download.request, + finalError == null ? STATE_COMPLETED : STATE_FAILED, + download.startTimeMs, + /* updateTimeMs= */ System.currentTimeMillis(), + download.contentLength, + download.stopReason, + finalError == null ? FAILURE_REASON_NONE : FAILURE_REASON_UNKNOWN, + download.progress); + // The download is now in a terminal state, so should not be in the downloads list. + downloads.remove(getDownloadIndex(download.request.id)); + // We still need to update the download index and main thread. + try { + downloadIndex.putDownload(download); + } catch (IOException e) { + Log.e(TAG, "Failed to update index.", e); + } + DownloadUpdate update = + new DownloadUpdate(download, /* isRemove= */ false, new ArrayList<>(downloads)); + mainHandler.obtainMessage(MSG_DOWNLOAD_UPDATE, update).sendToTarget(); + } + + private void onRemoveTaskStopped(Download download) { + if (download.state == STATE_RESTARTING) { + putDownloadWithState( + download, download.stopReason == STOP_REASON_NONE ? STATE_QUEUED : STATE_STOPPED); + syncTasks(); + } else { + int removeIndex = getDownloadIndex(download.request.id); + downloads.remove(removeIndex); + try { + downloadIndex.removeDownload(download.request.id); + } catch (IOException e) { + Log.e(TAG, "Failed to remove from database"); + } + DownloadUpdate update = + new DownloadUpdate(download, /* isRemove= */ true, new ArrayList<>(downloads)); + mainHandler.obtainMessage(MSG_DOWNLOAD_UPDATE, update).sendToTarget(); + } + } + + // Progress updates. + + private void updateProgress() { + for (int i = 0; i < downloads.size(); i++) { + Download download = downloads.get(i); + if (download.state == STATE_DOWNLOADING) { + try { + downloadIndex.putDownload(download); + } catch (IOException e) { + Log.e(TAG, "Failed to update index.", e); + } + } + } + sendEmptyMessageDelayed(MSG_UPDATE_PROGRESS, UPDATE_PROGRESS_INTERVAL_MS); + } + + // Helper methods. + + private boolean canDownloadsRun() { + return !downloadsPaused && notMetRequirements == 0; + } + + private Download putDownloadWithState(Download download, @Download.State int state) { + // Downloads in terminal states shouldn't be in the downloads list. This method cannot be used + // to set STATE_STOPPED either, because it doesn't have a stopReason argument. + Assertions.checkState( + state != STATE_COMPLETED && state != STATE_FAILED && state != STATE_STOPPED); + return putDownload(copyDownloadWithState(download, state)); + } + + private Download putDownload(Download download) { + // Downloads in terminal states shouldn't be in the downloads list. + Assertions.checkState(download.state != STATE_COMPLETED && download.state != STATE_FAILED); + int changedIndex = getDownloadIndex(download.request.id); + if (changedIndex == C.INDEX_UNSET) { + downloads.add(download); + Collections.sort(downloads, InternalHandler::compareStartTimes); + } else { + boolean needsSort = download.startTimeMs != downloads.get(changedIndex).startTimeMs; + downloads.set(changedIndex, download); + if (needsSort) { + Collections.sort(downloads, InternalHandler::compareStartTimes); + } + } + try { + downloadIndex.putDownload(download); + } catch (IOException e) { + Log.e(TAG, "Failed to update index.", e); + } + DownloadUpdate update = + new DownloadUpdate(download, /* isRemove= */ false, new ArrayList<>(downloads)); + mainHandler.obtainMessage(MSG_DOWNLOAD_UPDATE, update).sendToTarget(); + return download; + } + + @Nullable + private Download getDownload(String id, boolean loadFromIndex) { + int index = getDownloadIndex(id); + if (index != C.INDEX_UNSET) { + return downloads.get(index); + } + if (loadFromIndex) { + try { + return downloadIndex.getDownload(id); + } catch (IOException e) { + Log.e(TAG, "Failed to load download: " + id, e); + } + } + return null; + } + + private int getDownloadIndex(String id) { + for (int i = 0; i < downloads.size(); i++) { + Download download = downloads.get(i); + if (download.request.id.equals(id)) { + return i; + } + } + return C.INDEX_UNSET; + } + + private static Download copyDownloadWithState(Download download, @Download.State int state) { + return new Download( + download.request, + state, + download.startTimeMs, + /* updateTimeMs= */ System.currentTimeMillis(), + download.contentLength, + /* stopReason= */ 0, + FAILURE_REASON_NONE, + download.progress); + } + + private static int compareStartTimes(Download first, Download second) { + return Util.compareLong(first.startTimeMs, second.startTimeMs); + } + } + + private static class Task extends Thread implements Downloader.ProgressListener { + + private final DownloadRequest request; + private final Downloader downloader; + private final DownloadProgress downloadProgress; + private final boolean isRemove; + private final int minRetryCount; + + @Nullable private volatile InternalHandler internalHandler; + private volatile boolean isCanceled; + @Nullable private Throwable finalError; + + private long contentLength; + + private Task( + DownloadRequest request, + Downloader downloader, + DownloadProgress downloadProgress, + boolean isRemove, + int minRetryCount, + InternalHandler internalHandler) { + this.request = request; + this.downloader = downloader; + this.downloadProgress = downloadProgress; + this.isRemove = isRemove; + this.minRetryCount = minRetryCount; + this.internalHandler = internalHandler; + contentLength = C.LENGTH_UNSET; + } + + @SuppressWarnings("nullness:assignment.type.incompatible") + public void cancel(boolean released) { + if (released) { + // Download threads are GC roots for as long as they're running. The time taken for + // cancellation to complete depends on the implementation of the downloader being used. We + // null the handler reference here so that it doesn't prevent garbage collection of the + // download manager whilst cancellation is ongoing. + internalHandler = null; + } + if (!isCanceled) { + isCanceled = true; + downloader.cancel(); + interrupt(); + } + } + + // Methods running on download thread. + + @Override + public void run() { + try { + if (isRemove) { + downloader.remove(); + } else { + int errorCount = 0; + long errorPosition = C.LENGTH_UNSET; + while (!isCanceled) { + try { + downloader.download(/* progressListener= */ this); + break; + } catch (IOException e) { + if (!isCanceled) { + long bytesDownloaded = downloadProgress.bytesDownloaded; + if (bytesDownloaded != errorPosition) { + errorPosition = bytesDownloaded; + errorCount = 0; + } + if (++errorCount > minRetryCount) { + throw e; + } + Thread.sleep(getRetryDelayMillis(errorCount)); + } + } + } + } + } catch (Throwable e) { + finalError = e; + } + @Nullable Handler internalHandler = this.internalHandler; + if (internalHandler != null) { + internalHandler.obtainMessage(MSG_TASK_STOPPED, this).sendToTarget(); + } + } + + @Override + public void onProgress(long contentLength, long bytesDownloaded, float percentDownloaded) { + downloadProgress.bytesDownloaded = bytesDownloaded; + downloadProgress.percentDownloaded = percentDownloaded; + if (contentLength != this.contentLength) { + this.contentLength = contentLength; + @Nullable Handler internalHandler = this.internalHandler; + if (internalHandler != null) { + internalHandler.obtainMessage(MSG_CONTENT_LENGTH_CHANGED, this).sendToTarget(); + } + } + } + + private static int getRetryDelayMillis(int errorCount) { + return Math.min((errorCount - 1) * 1000, 5000); + } + } + + private static final class DownloadUpdate { + + public final Download download; + public final boolean isRemove; + public final List downloads; + + public DownloadUpdate(Download download, boolean isRemove, List downloads) { + this.download = download; + this.isRemove = isRemove; + this.downloads = downloads; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadProgress.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadProgress.java new file mode 100644 index 0000000000..177698ec1e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadProgress.java @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; + +/** Mutable {@link Download} progress. */ +public class DownloadProgress { + + /** The number of bytes that have been downloaded. */ + public long bytesDownloaded; + + /** The percentage that has been downloaded, or {@link C#PERCENTAGE_UNSET} if unknown. */ + public float percentDownloaded; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadRequest.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadRequest.java new file mode 100644 index 0000000000..31a441aa2d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadRequest.java @@ -0,0 +1,212 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.net.Uri; +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; + +/** Defines content to be downloaded. */ +public final class DownloadRequest implements Parcelable { + + /** Thrown when the encoded request data belongs to an unsupported request type. */ + public static class UnsupportedRequestException extends IOException {} + + /** Type for progressive downloads. */ + public static final String TYPE_PROGRESSIVE = "progressive"; + /** Type for DASH downloads. */ + public static final String TYPE_DASH = "dash"; + /** Type for HLS downloads. */ + public static final String TYPE_HLS = "hls"; + /** Type for SmoothStreaming downloads. */ + public static final String TYPE_SS = "ss"; + + /** The unique content id. */ + public final String id; + /** The type of the request. */ + public final String type; + /** The uri being downloaded. */ + public final Uri uri; + /** Stream keys to be downloaded. If empty, all streams will be downloaded. */ + public final List streamKeys; + /** + * Custom key for cache indexing, or null. Must be null for DASH, HLS and SmoothStreaming + * downloads. + */ + @Nullable public final String customCacheKey; + /** Application defined data associated with the download. May be empty. */ + public final byte[] data; + + /** + * @param id See {@link #id}. + * @param type See {@link #type}. + * @param uri See {@link #uri}. + * @param streamKeys See {@link #streamKeys}. + * @param customCacheKey See {@link #customCacheKey}. + * @param data See {@link #data}. + */ + public DownloadRequest( + String id, + String type, + Uri uri, + List streamKeys, + @Nullable String customCacheKey, + @Nullable byte[] data) { + if (TYPE_DASH.equals(type) || TYPE_HLS.equals(type) || TYPE_SS.equals(type)) { + Assertions.checkArgument( + customCacheKey == null, "customCacheKey must be null for type: " + type); + } + this.id = id; + this.type = type; + this.uri = uri; + ArrayList mutableKeys = new ArrayList<>(streamKeys); + Collections.sort(mutableKeys); + this.streamKeys = Collections.unmodifiableList(mutableKeys); + this.customCacheKey = customCacheKey; + this.data = data != null ? Arrays.copyOf(data, data.length) : Util.EMPTY_BYTE_ARRAY; + } + + /* package */ DownloadRequest(Parcel in) { + id = castNonNull(in.readString()); + type = castNonNull(in.readString()); + uri = Uri.parse(castNonNull(in.readString())); + int streamKeyCount = in.readInt(); + ArrayList mutableStreamKeys = new ArrayList<>(streamKeyCount); + for (int i = 0; i < streamKeyCount; i++) { + mutableStreamKeys.add(in.readParcelable(StreamKey.class.getClassLoader())); + } + streamKeys = Collections.unmodifiableList(mutableStreamKeys); + customCacheKey = in.readString(); + data = castNonNull(in.createByteArray()); + } + + /** + * Returns a copy with the specified ID. + * + * @param id The ID of the copy. + * @return The copy with the specified ID. + */ + public DownloadRequest copyWithId(String id) { + return new DownloadRequest(id, type, uri, streamKeys, customCacheKey, data); + } + + /** + * Returns the result of merging {@code newRequest} into this request. The requests must have the + * same {@link #id} and {@link #type}. + * + *

If the requests have different {@link #uri}, {@link #customCacheKey} and {@link #data} + * values, then those from the request being merged are included in the result. + * + * @param newRequest The request being merged. + * @return The merged result. + * @throws IllegalArgumentException If the requests do not have the same {@link #id} and {@link + * #type}. + */ + public DownloadRequest copyWithMergedRequest(DownloadRequest newRequest) { + Assertions.checkArgument(id.equals(newRequest.id)); + Assertions.checkArgument(type.equals(newRequest.type)); + List mergedKeys; + if (streamKeys.isEmpty() || newRequest.streamKeys.isEmpty()) { + // If either streamKeys is empty then all streams should be downloaded. + mergedKeys = Collections.emptyList(); + } else { + mergedKeys = new ArrayList<>(streamKeys); + for (int i = 0; i < newRequest.streamKeys.size(); i++) { + StreamKey newKey = newRequest.streamKeys.get(i); + if (!mergedKeys.contains(newKey)) { + mergedKeys.add(newKey); + } + } + } + return new DownloadRequest( + id, type, newRequest.uri, mergedKeys, newRequest.customCacheKey, newRequest.data); + } + + @Override + public String toString() { + return type + ":" + id; + } + + @Override + public boolean equals(@Nullable Object o) { + if (!(o instanceof DownloadRequest)) { + return false; + } + DownloadRequest that = (DownloadRequest) o; + return id.equals(that.id) + && type.equals(that.type) + && uri.equals(that.uri) + && streamKeys.equals(that.streamKeys) + && Util.areEqual(customCacheKey, that.customCacheKey) + && Arrays.equals(data, that.data); + } + + @Override + public final int hashCode() { + int result = type.hashCode(); + result = 31 * result + id.hashCode(); + result = 31 * result + type.hashCode(); + result = 31 * result + uri.hashCode(); + result = 31 * result + streamKeys.hashCode(); + result = 31 * result + (customCacheKey != null ? customCacheKey.hashCode() : 0); + result = 31 * result + Arrays.hashCode(data); + return result; + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(id); + dest.writeString(type); + dest.writeString(uri.toString()); + dest.writeInt(streamKeys.size()); + for (int i = 0; i < streamKeys.size(); i++) { + dest.writeParcelable(streamKeys.get(i), /* parcelableFlags= */ 0); + } + dest.writeString(customCacheKey); + dest.writeByteArray(data); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public DownloadRequest createFromParcel(Parcel in) { + return new DownloadRequest(in); + } + + @Override + public DownloadRequest[] newArray(int size) { + return new DownloadRequest[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadService.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadService.java new file mode 100644 index 0000000000..a2d7d82438 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloadService.java @@ -0,0 +1,1049 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.offline.Download.STOP_REASON_NONE; + +import android.app.Notification; +import android.app.Service; +import android.content.Context; +import android.content.Intent; +import android.os.Handler; +import android.os.IBinder; +import android.os.Looper; +import androidx.annotation.Nullable; +import androidx.annotation.StringRes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.scheduler.Requirements; +import org.mozilla.thirdparty.com.google.android.exoplayer2.scheduler.Scheduler; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NotificationUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.HashMap; +import java.util.List; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** A {@link Service} for downloading media. */ +public abstract class DownloadService extends Service { + + /** + * Starts a download service to resume any ongoing downloads. Extras: + * + *

    + *
  • {@link #KEY_FOREGROUND} - See {@link #KEY_FOREGROUND}. + *
+ */ + public static final String ACTION_INIT = + "com.google.android.exoplayer.downloadService.action.INIT"; + + /** Like {@link #ACTION_INIT}, but with {@link #KEY_FOREGROUND} implicitly set to true. */ + private static final String ACTION_RESTART = + "com.google.android.exoplayer.downloadService.action.RESTART"; + + /** + * Adds a new download. Extras: + * + *
    + *
  • {@link #KEY_DOWNLOAD_REQUEST} - A {@link DownloadRequest} defining the download to be + * added. + *
  • {@link #KEY_STOP_REASON} - An initial stop reason for the download. If omitted {@link + * Download#STOP_REASON_NONE} is used. + *
  • {@link #KEY_FOREGROUND} - See {@link #KEY_FOREGROUND}. + *
+ */ + public static final String ACTION_ADD_DOWNLOAD = + "com.google.android.exoplayer.downloadService.action.ADD_DOWNLOAD"; + + /** + * Removes a download. Extras: + * + *
    + *
  • {@link #KEY_CONTENT_ID} - The content id of a download to remove. + *
  • {@link #KEY_FOREGROUND} - See {@link #KEY_FOREGROUND}. + *
+ */ + public static final String ACTION_REMOVE_DOWNLOAD = + "com.google.android.exoplayer.downloadService.action.REMOVE_DOWNLOAD"; + + /** + * Removes all downloads. Extras: + * + *
    + *
  • {@link #KEY_FOREGROUND} - See {@link #KEY_FOREGROUND}. + *
+ */ + public static final String ACTION_REMOVE_ALL_DOWNLOADS = + "com.google.android.exoplayer.downloadService.action.REMOVE_ALL_DOWNLOADS"; + + /** + * Resumes all downloads except those that have a non-zero {@link Download#stopReason}. Extras: + * + *
    + *
  • {@link #KEY_FOREGROUND} - See {@link #KEY_FOREGROUND}. + *
+ */ + public static final String ACTION_RESUME_DOWNLOADS = + "com.google.android.exoplayer.downloadService.action.RESUME_DOWNLOADS"; + + /** + * Pauses all downloads. Extras: + * + *
    + *
  • {@link #KEY_FOREGROUND} - See {@link #KEY_FOREGROUND}. + *
+ */ + public static final String ACTION_PAUSE_DOWNLOADS = + "com.google.android.exoplayer.downloadService.action.PAUSE_DOWNLOADS"; + + /** + * Sets the stop reason for one or all downloads. To clear the stop reason, pass {@link + * Download#STOP_REASON_NONE}. Extras: + * + *
    + *
  • {@link #KEY_CONTENT_ID} - The content id of a single download to update with the stop + * reason. If omitted, all downloads will be updated. + *
  • {@link #KEY_STOP_REASON} - An application provided reason for stopping the download or + * downloads, or {@link Download#STOP_REASON_NONE} to clear the stop reason. + *
  • {@link #KEY_FOREGROUND} - See {@link #KEY_FOREGROUND}. + *
+ */ + public static final String ACTION_SET_STOP_REASON = + "com.google.android.exoplayer.downloadService.action.SET_STOP_REASON"; + + /** + * Sets the requirements that need to be met for downloads to progress. Extras: + * + *
    + *
  • {@link #KEY_REQUIREMENTS} - A {@link Requirements}. + *
  • {@link #KEY_FOREGROUND} - See {@link #KEY_FOREGROUND}. + *
+ */ + public static final String ACTION_SET_REQUIREMENTS = + "com.google.android.exoplayer.downloadService.action.SET_REQUIREMENTS"; + + /** Key for the {@link DownloadRequest} in {@link #ACTION_ADD_DOWNLOAD} intents. */ + public static final String KEY_DOWNLOAD_REQUEST = "download_request"; + + /** + * Key for the {@link String} content id in {@link #ACTION_SET_STOP_REASON} and {@link + * #ACTION_REMOVE_DOWNLOAD} intents. + */ + public static final String KEY_CONTENT_ID = "content_id"; + + /** + * Key for the integer stop reason in {@link #ACTION_SET_STOP_REASON} and {@link + * #ACTION_ADD_DOWNLOAD} intents. + */ + public static final String KEY_STOP_REASON = "stop_reason"; + + /** Key for the {@link Requirements} in {@link #ACTION_SET_REQUIREMENTS} intents. */ + public static final String KEY_REQUIREMENTS = "requirements"; + + /** + * Key for a boolean extra that can be set on any intent to indicate whether the service was + * started in the foreground. If set, the service is guaranteed to call {@link + * #startForeground(int, Notification)}. + */ + public static final String KEY_FOREGROUND = "foreground"; + + /** Invalid foreground notification id that can be used to run the service in the background. */ + public static final int FOREGROUND_NOTIFICATION_ID_NONE = 0; + + /** Default foreground notification update interval in milliseconds. */ + public static final long DEFAULT_FOREGROUND_NOTIFICATION_UPDATE_INTERVAL = 1000; + + private static final String TAG = "DownloadService"; + + // Keep a DownloadManagerHelper for each DownloadService as long as the process is running. The + // helper is needed to restart the DownloadService when there's no scheduler. Even when there is a + // scheduler, the DownloadManagerHelper is typically able to restart the DownloadService faster. + private static final HashMap, DownloadManagerHelper> + downloadManagerHelpers = new HashMap<>(); + + @Nullable private final ForegroundNotificationUpdater foregroundNotificationUpdater; + @Nullable private final String channelId; + @StringRes private final int channelNameResourceId; + @StringRes private final int channelDescriptionResourceId; + + @MonotonicNonNull private DownloadManager downloadManager; + private int lastStartId; + private boolean startedInForeground; + private boolean taskRemoved; + private boolean isStopped; + private boolean isDestroyed; + + /** + * Creates a DownloadService. + * + *

If {@code foregroundNotificationId} is {@link #FOREGROUND_NOTIFICATION_ID_NONE} then the + * service will only ever run in the background. No foreground notification will be displayed and + * {@link #getScheduler()} will not be called. + * + *

If {@code foregroundNotificationId} is not {@link #FOREGROUND_NOTIFICATION_ID_NONE} then the + * service will run in the foreground. The foreground notification will be updated at least as + * often as the interval specified by {@link #DEFAULT_FOREGROUND_NOTIFICATION_UPDATE_INTERVAL}. + * + * @param foregroundNotificationId The notification id for the foreground notification, or {@link + * #FOREGROUND_NOTIFICATION_ID_NONE} if the service should only ever run in the background. + */ + protected DownloadService(int foregroundNotificationId) { + this(foregroundNotificationId, DEFAULT_FOREGROUND_NOTIFICATION_UPDATE_INTERVAL); + } + + /** + * Creates a DownloadService. + * + * @param foregroundNotificationId The notification id for the foreground notification, or {@link + * #FOREGROUND_NOTIFICATION_ID_NONE} if the service should only ever run in the background. + * @param foregroundNotificationUpdateInterval The maximum interval between updates to the + * foreground notification, in milliseconds. Ignored if {@code foregroundNotificationId} is + * {@link #FOREGROUND_NOTIFICATION_ID_NONE}. + */ + protected DownloadService( + int foregroundNotificationId, long foregroundNotificationUpdateInterval) { + this( + foregroundNotificationId, + foregroundNotificationUpdateInterval, + /* channelId= */ null, + /* channelNameResourceId= */ 0, + /* channelDescriptionResourceId= */ 0); + } + + /** @deprecated Use {@link #DownloadService(int, long, String, int, int)}. */ + @Deprecated + protected DownloadService( + int foregroundNotificationId, + long foregroundNotificationUpdateInterval, + @Nullable String channelId, + @StringRes int channelNameResourceId) { + this( + foregroundNotificationId, + foregroundNotificationUpdateInterval, + channelId, + channelNameResourceId, + /* channelDescriptionResourceId= */ 0); + } + + /** + * Creates a DownloadService. + * + * @param foregroundNotificationId The notification id for the foreground notification, or {@link + * #FOREGROUND_NOTIFICATION_ID_NONE} if the service should only ever run in the background. + * @param foregroundNotificationUpdateInterval The maximum interval between updates to the + * foreground notification, in milliseconds. Ignored if {@code foregroundNotificationId} is + * {@link #FOREGROUND_NOTIFICATION_ID_NONE}. + * @param channelId An id for a low priority notification channel to create, or {@code null} if + * the app will take care of creating a notification channel if needed. If specified, must be + * unique per package. The value may be truncated if it's too long. Ignored if {@code + * foregroundNotificationId} is {@link #FOREGROUND_NOTIFICATION_ID_NONE}. + * @param channelNameResourceId A string resource identifier for the user visible name of the + * notification channel. The recommended maximum length is 40 characters. The value may be + * truncated if it's too long. Ignored if {@code channelId} is null or if {@code + * foregroundNotificationId} is {@link #FOREGROUND_NOTIFICATION_ID_NONE}. + * @param channelDescriptionResourceId A string resource identifier for the user visible + * description of the notification channel, or 0 if no description is provided. The + * recommended maximum length is 300 characters. The value may be truncated if it is too long. + * Ignored if {@code channelId} is null or if {@code foregroundNotificationId} is {@link + * #FOREGROUND_NOTIFICATION_ID_NONE}. + */ + protected DownloadService( + int foregroundNotificationId, + long foregroundNotificationUpdateInterval, + @Nullable String channelId, + @StringRes int channelNameResourceId, + @StringRes int channelDescriptionResourceId) { + if (foregroundNotificationId == FOREGROUND_NOTIFICATION_ID_NONE) { + this.foregroundNotificationUpdater = null; + this.channelId = null; + this.channelNameResourceId = 0; + this.channelDescriptionResourceId = 0; + } else { + this.foregroundNotificationUpdater = + new ForegroundNotificationUpdater( + foregroundNotificationId, foregroundNotificationUpdateInterval); + this.channelId = channelId; + this.channelNameResourceId = channelNameResourceId; + this.channelDescriptionResourceId = channelDescriptionResourceId; + } + } + + /** + * Builds an {@link Intent} for adding a new download. + * + * @param context A {@link Context}. + * @param clazz The concrete download service being targeted by the intent. + * @param downloadRequest The request to be executed. + * @param foreground Whether this intent will be used to start the service in the foreground. + * @return The created intent. + */ + public static Intent buildAddDownloadIntent( + Context context, + Class clazz, + DownloadRequest downloadRequest, + boolean foreground) { + return buildAddDownloadIntent(context, clazz, downloadRequest, STOP_REASON_NONE, foreground); + } + + /** + * Builds an {@link Intent} for adding a new download. + * + * @param context A {@link Context}. + * @param clazz The concrete download service being targeted by the intent. + * @param downloadRequest The request to be executed. + * @param stopReason An initial stop reason for the download, or {@link Download#STOP_REASON_NONE} + * if the download should be started. + * @param foreground Whether this intent will be used to start the service in the foreground. + * @return The created intent. + */ + public static Intent buildAddDownloadIntent( + Context context, + Class clazz, + DownloadRequest downloadRequest, + int stopReason, + boolean foreground) { + return getIntent(context, clazz, ACTION_ADD_DOWNLOAD, foreground) + .putExtra(KEY_DOWNLOAD_REQUEST, downloadRequest) + .putExtra(KEY_STOP_REASON, stopReason); + } + + /** + * Builds an {@link Intent} for removing the download with the {@code id}. + * + * @param context A {@link Context}. + * @param clazz The concrete download service being targeted by the intent. + * @param id The content id. + * @param foreground Whether this intent will be used to start the service in the foreground. + * @return The created intent. + */ + public static Intent buildRemoveDownloadIntent( + Context context, Class clazz, String id, boolean foreground) { + return getIntent(context, clazz, ACTION_REMOVE_DOWNLOAD, foreground) + .putExtra(KEY_CONTENT_ID, id); + } + + /** + * Builds an {@link Intent} for removing all downloads. + * + * @param context A {@link Context}. + * @param clazz The concrete download service being targeted by the intent. + * @param foreground Whether this intent will be used to start the service in the foreground. + * @return The created intent. + */ + public static Intent buildRemoveAllDownloadsIntent( + Context context, Class clazz, boolean foreground) { + return getIntent(context, clazz, ACTION_REMOVE_ALL_DOWNLOADS, foreground); + } + + /** + * Builds an {@link Intent} for resuming all downloads. + * + * @param context A {@link Context}. + * @param clazz The concrete download service being targeted by the intent. + * @param foreground Whether this intent will be used to start the service in the foreground. + * @return The created intent. + */ + public static Intent buildResumeDownloadsIntent( + Context context, Class clazz, boolean foreground) { + return getIntent(context, clazz, ACTION_RESUME_DOWNLOADS, foreground); + } + + /** + * Builds an {@link Intent} to pause all downloads. + * + * @param context A {@link Context}. + * @param clazz The concrete download service being targeted by the intent. + * @param foreground Whether this intent will be used to start the service in the foreground. + * @return The created intent. + */ + public static Intent buildPauseDownloadsIntent( + Context context, Class clazz, boolean foreground) { + return getIntent(context, clazz, ACTION_PAUSE_DOWNLOADS, foreground); + } + + /** + * Builds an {@link Intent} for setting the stop reason for one or all downloads. To clear the + * stop reason, pass {@link Download#STOP_REASON_NONE}. + * + * @param context A {@link Context}. + * @param clazz The concrete download service being targeted by the intent. + * @param id The content id, or {@code null} to set the stop reason for all downloads. + * @param stopReason An application defined stop reason. + * @param foreground Whether this intent will be used to start the service in the foreground. + * @return The created intent. + */ + public static Intent buildSetStopReasonIntent( + Context context, + Class clazz, + @Nullable String id, + int stopReason, + boolean foreground) { + return getIntent(context, clazz, ACTION_SET_STOP_REASON, foreground) + .putExtra(KEY_CONTENT_ID, id) + .putExtra(KEY_STOP_REASON, stopReason); + } + + /** + * Builds an {@link Intent} for setting the requirements that need to be met for downloads to + * progress. + * + * @param context A {@link Context}. + * @param clazz The concrete download service being targeted by the intent. + * @param requirements A {@link Requirements}. + * @param foreground Whether this intent will be used to start the service in the foreground. + * @return The created intent. + */ + public static Intent buildSetRequirementsIntent( + Context context, + Class clazz, + Requirements requirements, + boolean foreground) { + return getIntent(context, clazz, ACTION_SET_REQUIREMENTS, foreground) + .putExtra(KEY_REQUIREMENTS, requirements); + } + + /** + * Starts the service if not started already and adds a new download. + * + * @param context A {@link Context}. + * @param clazz The concrete download service to be started. + * @param downloadRequest The request to be executed. + * @param foreground Whether the service is started in the foreground. + */ + public static void sendAddDownload( + Context context, + Class clazz, + DownloadRequest downloadRequest, + boolean foreground) { + Intent intent = buildAddDownloadIntent(context, clazz, downloadRequest, foreground); + startService(context, intent, foreground); + } + + /** + * Starts the service if not started already and adds a new download. + * + * @param context A {@link Context}. + * @param clazz The concrete download service to be started. + * @param downloadRequest The request to be executed. + * @param stopReason An initial stop reason for the download, or {@link Download#STOP_REASON_NONE} + * if the download should be started. + * @param foreground Whether the service is started in the foreground. + */ + public static void sendAddDownload( + Context context, + Class clazz, + DownloadRequest downloadRequest, + int stopReason, + boolean foreground) { + Intent intent = buildAddDownloadIntent(context, clazz, downloadRequest, stopReason, foreground); + startService(context, intent, foreground); + } + + /** + * Starts the service if not started already and removes a download. + * + * @param context A {@link Context}. + * @param clazz The concrete download service to be started. + * @param id The content id. + * @param foreground Whether the service is started in the foreground. + */ + public static void sendRemoveDownload( + Context context, Class clazz, String id, boolean foreground) { + Intent intent = buildRemoveDownloadIntent(context, clazz, id, foreground); + startService(context, intent, foreground); + } + + /** + * Starts the service if not started already and removes all downloads. + * + * @param context A {@link Context}. + * @param clazz The concrete download service to be started. + * @param foreground Whether the service is started in the foreground. + */ + public static void sendRemoveAllDownloads( + Context context, Class clazz, boolean foreground) { + Intent intent = buildRemoveAllDownloadsIntent(context, clazz, foreground); + startService(context, intent, foreground); + } + + /** + * Starts the service if not started already and resumes all downloads. + * + * @param context A {@link Context}. + * @param clazz The concrete download service to be started. + * @param foreground Whether the service is started in the foreground. + */ + public static void sendResumeDownloads( + Context context, Class clazz, boolean foreground) { + Intent intent = buildResumeDownloadsIntent(context, clazz, foreground); + startService(context, intent, foreground); + } + + /** + * Starts the service if not started already and pauses all downloads. + * + * @param context A {@link Context}. + * @param clazz The concrete download service to be started. + * @param foreground Whether the service is started in the foreground. + */ + public static void sendPauseDownloads( + Context context, Class clazz, boolean foreground) { + Intent intent = buildPauseDownloadsIntent(context, clazz, foreground); + startService(context, intent, foreground); + } + + /** + * Starts the service if not started already and sets the stop reason for one or all downloads. To + * clear stop reason, pass {@link Download#STOP_REASON_NONE}. + * + * @param context A {@link Context}. + * @param clazz The concrete download service to be started. + * @param id The content id, or {@code null} to set the stop reason for all downloads. + * @param stopReason An application defined stop reason. + * @param foreground Whether the service is started in the foreground. + */ + public static void sendSetStopReason( + Context context, + Class clazz, + @Nullable String id, + int stopReason, + boolean foreground) { + Intent intent = buildSetStopReasonIntent(context, clazz, id, stopReason, foreground); + startService(context, intent, foreground); + } + + /** + * Starts the service if not started already and sets the requirements that need to be met for + * downloads to progress. + * + * @param context A {@link Context}. + * @param clazz The concrete download service to be started. + * @param requirements A {@link Requirements}. + * @param foreground Whether the service is started in the foreground. + */ + public static void sendSetRequirements( + Context context, + Class clazz, + Requirements requirements, + boolean foreground) { + Intent intent = buildSetRequirementsIntent(context, clazz, requirements, foreground); + startService(context, intent, foreground); + } + + /** + * Starts a download service to resume any ongoing downloads. + * + * @param context A {@link Context}. + * @param clazz The concrete download service to be started. + * @see #startForeground(Context, Class) + */ + public static void start(Context context, Class clazz) { + context.startService(getIntent(context, clazz, ACTION_INIT)); + } + + /** + * Starts the service in the foreground without adding a new download request. If there are any + * not finished downloads and the requirements are met, the service resumes downloading. Otherwise + * it stops immediately. + * + * @param context A {@link Context}. + * @param clazz The concrete download service to be started. + * @see #start(Context, Class) + */ + public static void startForeground(Context context, Class clazz) { + Intent intent = getIntent(context, clazz, ACTION_INIT, true); + Util.startForegroundService(context, intent); + } + + @Override + public void onCreate() { + if (channelId != null) { + NotificationUtil.createNotificationChannel( + this, + channelId, + channelNameResourceId, + channelDescriptionResourceId, + NotificationUtil.IMPORTANCE_LOW); + } + Class clazz = getClass(); + @Nullable DownloadManagerHelper downloadManagerHelper = downloadManagerHelpers.get(clazz); + if (downloadManagerHelper == null) { + boolean foregroundAllowed = foregroundNotificationUpdater != null; + @Nullable Scheduler scheduler = foregroundAllowed ? getScheduler() : null; + downloadManager = getDownloadManager(); + downloadManager.resumeDownloads(); + downloadManagerHelper = + new DownloadManagerHelper( + getApplicationContext(), downloadManager, foregroundAllowed, scheduler, clazz); + downloadManagerHelpers.put(clazz, downloadManagerHelper); + } else { + downloadManager = downloadManagerHelper.downloadManager; + } + downloadManagerHelper.attachService(this); + } + + @Override + public int onStartCommand(@Nullable Intent intent, int flags, int startId) { + lastStartId = startId; + taskRemoved = false; + @Nullable String intentAction = null; + @Nullable String contentId = null; + if (intent != null) { + intentAction = intent.getAction(); + contentId = intent.getStringExtra(KEY_CONTENT_ID); + startedInForeground |= + intent.getBooleanExtra(KEY_FOREGROUND, false) || ACTION_RESTART.equals(intentAction); + } + // intentAction is null if the service is restarted or no action is specified. + if (intentAction == null) { + intentAction = ACTION_INIT; + } + DownloadManager downloadManager = Assertions.checkNotNull(this.downloadManager); + switch (intentAction) { + case ACTION_INIT: + case ACTION_RESTART: + // Do nothing. + break; + case ACTION_ADD_DOWNLOAD: + @Nullable + DownloadRequest downloadRequest = + Assertions.checkNotNull(intent).getParcelableExtra(KEY_DOWNLOAD_REQUEST); + if (downloadRequest == null) { + Log.e(TAG, "Ignored ADD_DOWNLOAD: Missing " + KEY_DOWNLOAD_REQUEST + " extra"); + } else { + int stopReason = intent.getIntExtra(KEY_STOP_REASON, Download.STOP_REASON_NONE); + downloadManager.addDownload(downloadRequest, stopReason); + } + break; + case ACTION_REMOVE_DOWNLOAD: + if (contentId == null) { + Log.e(TAG, "Ignored REMOVE_DOWNLOAD: Missing " + KEY_CONTENT_ID + " extra"); + } else { + downloadManager.removeDownload(contentId); + } + break; + case ACTION_REMOVE_ALL_DOWNLOADS: + downloadManager.removeAllDownloads(); + break; + case ACTION_RESUME_DOWNLOADS: + downloadManager.resumeDownloads(); + break; + case ACTION_PAUSE_DOWNLOADS: + downloadManager.pauseDownloads(); + break; + case ACTION_SET_STOP_REASON: + if (!Assertions.checkNotNull(intent).hasExtra(KEY_STOP_REASON)) { + Log.e(TAG, "Ignored SET_STOP_REASON: Missing " + KEY_STOP_REASON + " extra"); + } else { + int stopReason = intent.getIntExtra(KEY_STOP_REASON, /* defaultValue= */ 0); + downloadManager.setStopReason(contentId, stopReason); + } + break; + case ACTION_SET_REQUIREMENTS: + @Nullable + Requirements requirements = + Assertions.checkNotNull(intent).getParcelableExtra(KEY_REQUIREMENTS); + if (requirements == null) { + Log.e(TAG, "Ignored SET_REQUIREMENTS: Missing " + KEY_REQUIREMENTS + " extra"); + } else { + downloadManager.setRequirements(requirements); + } + break; + default: + Log.e(TAG, "Ignored unrecognized action: " + intentAction); + break; + } + + if (Util.SDK_INT >= 26 && startedInForeground && foregroundNotificationUpdater != null) { + // From API level 26, services started in the foreground are required to show a notification. + foregroundNotificationUpdater.showNotificationIfNotAlready(); + } + + isStopped = false; + if (downloadManager.isIdle()) { + stop(); + } + return START_STICKY; + } + + @Override + public void onTaskRemoved(Intent rootIntent) { + taskRemoved = true; + } + + @Override + public void onDestroy() { + isDestroyed = true; + DownloadManagerHelper downloadManagerHelper = + Assertions.checkNotNull(downloadManagerHelpers.get(getClass())); + downloadManagerHelper.detachService(this); + if (foregroundNotificationUpdater != null) { + foregroundNotificationUpdater.stopPeriodicUpdates(); + } + } + + /** + * Throws {@link UnsupportedOperationException} because this service is not designed to be bound. + */ + @Nullable + @Override + public final IBinder onBind(Intent intent) { + throw new UnsupportedOperationException(); + } + + /** + * Returns a {@link DownloadManager} to be used to downloaded content. Called only once in the + * life cycle of the process. + */ + protected abstract DownloadManager getDownloadManager(); + + /** + * Returns a {@link Scheduler} to restart the service when requirements allowing downloads to take + * place are met. If {@code null}, the service will only be restarted if the process is still in + * memory when the requirements are met. + * + *

This method is not called for services whose {@code foregroundNotificationId} is set to + * {@link #FOREGROUND_NOTIFICATION_ID_NONE}. Such services will only be restarted if the process + * is still in memory and considered non-idle, meaning that it's either in the foreground or was + * backgrounded within the last few minutes. + */ + @Nullable + protected abstract Scheduler getScheduler(); + + /** + * Returns a notification to be displayed when this service running in the foreground. + * + *

Download services that do not wish to run in the foreground should be created by setting the + * {@code foregroundNotificationId} constructor argument to {@link + * #FOREGROUND_NOTIFICATION_ID_NONE}. This method is not called for such services, meaning it can + * be implemented to throw {@link UnsupportedOperationException}. + * + * @param downloads The current downloads. + * @return The foreground notification to display. + */ + protected abstract Notification getForegroundNotification(List downloads); + + /** + * Invalidates the current foreground notification and causes {@link + * #getForegroundNotification(List)} to be invoked again if the service isn't stopped. + */ + protected final void invalidateForegroundNotification() { + if (foregroundNotificationUpdater != null && !isDestroyed) { + foregroundNotificationUpdater.invalidate(); + } + } + + /** + * @deprecated Some state change events may not be delivered to this method. Instead, use {@link + * DownloadManager#addListener(DownloadManager.Listener)} to register a listener directly to + * the {@link DownloadManager} that you return through {@link #getDownloadManager()}. + */ + @Deprecated + protected void onDownloadChanged(Download download) { + // Do nothing. + } + + /** + * @deprecated Some download removal events may not be delivered to this method. Instead, use + * {@link DownloadManager#addListener(DownloadManager.Listener)} to register a listener + * directly to the {@link DownloadManager} that you return through {@link + * #getDownloadManager()}. + */ + @Deprecated + protected void onDownloadRemoved(Download download) { + // Do nothing. + } + + /** + * Called after the service is created, once the downloads are known. + * + * @param downloads The current downloads. + */ + private void notifyDownloads(List downloads) { + if (foregroundNotificationUpdater != null) { + for (int i = 0; i < downloads.size(); i++) { + if (needsStartedService(downloads.get(i).state)) { + foregroundNotificationUpdater.startPeriodicUpdates(); + break; + } + } + } + } + + /** + * Called when the state of a download changes. + * + * @param download The state of the download. + */ + @SuppressWarnings("deprecation") + private void notifyDownloadChanged(Download download) { + onDownloadChanged(download); + if (foregroundNotificationUpdater != null) { + if (needsStartedService(download.state)) { + foregroundNotificationUpdater.startPeriodicUpdates(); + } else { + foregroundNotificationUpdater.invalidate(); + } + } + } + + /** + * Called when a download is removed. + * + * @param download The last state of the download before it was removed. + */ + @SuppressWarnings("deprecation") + private void notifyDownloadRemoved(Download download) { + onDownloadRemoved(download); + if (foregroundNotificationUpdater != null) { + foregroundNotificationUpdater.invalidate(); + } + } + + /** Returns whether the service is stopped. */ + private boolean isStopped() { + return isStopped; + } + + private void stop() { + if (foregroundNotificationUpdater != null) { + foregroundNotificationUpdater.stopPeriodicUpdates(); + } + if (Util.SDK_INT < 28 && taskRemoved) { // See [Internal: b/74248644]. + stopSelf(); + isStopped = true; + } else { + isStopped |= stopSelfResult(lastStartId); + } + } + + private static boolean needsStartedService(@Download.State int state) { + return state == Download.STATE_DOWNLOADING + || state == Download.STATE_REMOVING + || state == Download.STATE_RESTARTING; + } + + private static Intent getIntent( + Context context, Class clazz, String action, boolean foreground) { + return getIntent(context, clazz, action).putExtra(KEY_FOREGROUND, foreground); + } + + private static Intent getIntent( + Context context, Class clazz, String action) { + return new Intent(context, clazz).setAction(action); + } + + private static void startService(Context context, Intent intent, boolean foreground) { + if (foreground) { + Util.startForegroundService(context, intent); + } else { + context.startService(intent); + } + } + + private final class ForegroundNotificationUpdater { + + private final int notificationId; + private final long updateInterval; + private final Handler handler; + + private boolean periodicUpdatesStarted; + private boolean notificationDisplayed; + + public ForegroundNotificationUpdater(int notificationId, long updateInterval) { + this.notificationId = notificationId; + this.updateInterval = updateInterval; + this.handler = new Handler(Looper.getMainLooper()); + } + + public void startPeriodicUpdates() { + periodicUpdatesStarted = true; + update(); + } + + public void stopPeriodicUpdates() { + periodicUpdatesStarted = false; + handler.removeCallbacksAndMessages(null); + } + + public void showNotificationIfNotAlready() { + if (!notificationDisplayed) { + update(); + } + } + + public void invalidate() { + if (notificationDisplayed) { + update(); + } + } + + private void update() { + List downloads = Assertions.checkNotNull(downloadManager).getCurrentDownloads(); + startForeground(notificationId, getForegroundNotification(downloads)); + notificationDisplayed = true; + if (periodicUpdatesStarted) { + handler.removeCallbacksAndMessages(null); + handler.postDelayed(this::update, updateInterval); + } + } + } + + private static final class DownloadManagerHelper implements DownloadManager.Listener { + + private final Context context; + private final DownloadManager downloadManager; + private final boolean foregroundAllowed; + @Nullable private final Scheduler scheduler; + private final Class serviceClass; + @Nullable private DownloadService downloadService; + + private DownloadManagerHelper( + Context context, + DownloadManager downloadManager, + boolean foregroundAllowed, + @Nullable Scheduler scheduler, + Class serviceClass) { + this.context = context; + this.downloadManager = downloadManager; + this.foregroundAllowed = foregroundAllowed; + this.scheduler = scheduler; + this.serviceClass = serviceClass; + downloadManager.addListener(this); + updateScheduler(); + } + + public void attachService(DownloadService downloadService) { + Assertions.checkState(this.downloadService == null); + this.downloadService = downloadService; + if (downloadManager.isInitialized()) { + // The call to DownloadService.notifyDownloads is posted to avoid it being called directly + // from DownloadService.onCreate. This is a good idea because it may in turn call + // DownloadService.getForegroundNotification, and concrete subclass implementations may + // not anticipate the possibility of this method being called before their onCreate + // implementation has finished executing. + new Handler() + .postAtFrontOfQueue( + () -> downloadService.notifyDownloads(downloadManager.getCurrentDownloads())); + } + } + + public void detachService(DownloadService downloadService) { + Assertions.checkState(this.downloadService == downloadService); + this.downloadService = null; + if (scheduler != null && !downloadManager.isWaitingForRequirements()) { + scheduler.cancel(); + } + } + + // DownloadManager.Listener implementation. + + @Override + public void onInitialized(DownloadManager downloadManager) { + if (downloadService != null) { + downloadService.notifyDownloads(downloadManager.getCurrentDownloads()); + } + } + + @Override + public void onDownloadChanged(DownloadManager downloadManager, Download download) { + if (downloadService != null) { + downloadService.notifyDownloadChanged(download); + } + if (serviceMayNeedRestart() && needsStartedService(download.state)) { + // This shouldn't happen unless (a) application code is changing the downloads by calling + // the DownloadManager directly rather than sending actions through the service, or (b) if + // the service is background only and a previous attempt to start it was prevented. Try and + // restart the service to robust against such cases. + Log.w(TAG, "DownloadService wasn't running. Restarting."); + restartService(); + } + } + + @Override + public void onDownloadRemoved(DownloadManager downloadManager, Download download) { + if (downloadService != null) { + downloadService.notifyDownloadRemoved(download); + } + } + + @Override + public final void onIdle(DownloadManager downloadManager) { + if (downloadService != null) { + downloadService.stop(); + } + } + + @Override + public void onWaitingForRequirementsChanged( + DownloadManager downloadManager, boolean waitingForRequirements) { + if (!waitingForRequirements + && !downloadManager.getDownloadsPaused() + && serviceMayNeedRestart()) { + // We're no longer waiting for requirements and downloads aren't paused, meaning the manager + // will be able to resume downloads that are currently queued. If there exist queued + // downloads then we should ensure the service is started. + List downloads = downloadManager.getCurrentDownloads(); + for (int i = 0; i < downloads.size(); i++) { + if (downloads.get(i).state == Download.STATE_QUEUED) { + restartService(); + break; + } + } + } + updateScheduler(); + } + + // Internal methods. + + private boolean serviceMayNeedRestart() { + return downloadService == null || downloadService.isStopped(); + } + + private void restartService() { + if (foregroundAllowed) { + Intent intent = getIntent(context, serviceClass, DownloadService.ACTION_RESTART); + Util.startForegroundService(context, intent); + } else { + // The service is background only. Use ACTION_INIT rather than ACTION_RESTART because + // ACTION_RESTART is handled as though KEY_FOREGROUND is set to true. + try { + Intent intent = getIntent(context, serviceClass, DownloadService.ACTION_INIT); + context.startService(intent); + } catch (IllegalArgumentException e) { + // The process is classed as idle by the platform. Starting a background service is not + // allowed in this state. + Log.w(TAG, "Failed to restart DownloadService (process is idle)."); + } + } + } + + private void updateScheduler() { + if (scheduler == null) { + return; + } + if (downloadManager.isWaitingForRequirements()) { + String servicePackage = context.getPackageName(); + Requirements requirements = downloadManager.getRequirements(); + boolean success = scheduler.schedule(requirements, servicePackage, ACTION_RESTART); + if (!success) { + Log.e(TAG, "Scheduling downloads failed."); + } + } else { + scheduler.cancel(); + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/Downloader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/Downloader.java new file mode 100644 index 0000000000..894d908e72 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/Downloader.java @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.IOException; + +/** Downloads and removes a piece of content. */ +public interface Downloader { + + /** Receives progress updates during download operations. */ + interface ProgressListener { + + /** + * Called when progress is made during a download operation. + * + * @param contentLength The length of the content in bytes, or {@link C#LENGTH_UNSET} if + * unknown. + * @param bytesDownloaded The number of bytes that have been downloaded. + * @param percentDownloaded The percentage of the content that has been downloaded, or {@link + * C#PERCENTAGE_UNSET}. + */ + void onProgress(long contentLength, long bytesDownloaded, float percentDownloaded); + } + + /** + * Downloads the content. + * + * @param progressListener A listener to receive progress updates, or {@code null}. + * @throws DownloadException Thrown if the content cannot be downloaded. + * @throws InterruptedException If the thread has been interrupted. + * @throws IOException Thrown when there is an io error while downloading. + */ + void download(@Nullable ProgressListener progressListener) + throws InterruptedException, IOException; + + /** Cancels the download operation and prevents future download operations from running. */ + void cancel(); + + /** + * Removes the content. + * + * @throws InterruptedException Thrown if the thread was interrupted. + */ + void remove() throws InterruptedException; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloaderConstructorHelper.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloaderConstructorHelper.java new file mode 100644 index 0000000000..5b2f579868 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloaderConstructorHelper.java @@ -0,0 +1,170 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSink; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DummyDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.FileDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.PriorityDataSourceFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.Cache; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheDataSink; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheDataSinkFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheDataSourceFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheKeyFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.PriorityTaskManager; + +/** A helper class that holds necessary parameters for {@link Downloader} construction. */ +public final class DownloaderConstructorHelper { + + private final Cache cache; + @Nullable private final CacheKeyFactory cacheKeyFactory; + @Nullable private final PriorityTaskManager priorityTaskManager; + private final CacheDataSourceFactory onlineCacheDataSourceFactory; + private final CacheDataSourceFactory offlineCacheDataSourceFactory; + + /** + * @param cache Cache instance to be used to store downloaded data. + * @param upstreamFactory A {@link DataSource.Factory} for creating {@link DataSource}s for + * downloading data. + */ + public DownloaderConstructorHelper(Cache cache, DataSource.Factory upstreamFactory) { + this( + cache, + upstreamFactory, + /* cacheReadDataSourceFactory= */ null, + /* cacheWriteDataSinkFactory= */ null, + /* priorityTaskManager= */ null); + } + + /** + * @param cache Cache instance to be used to store downloaded data. + * @param upstreamFactory A {@link DataSource.Factory} for creating {@link DataSource}s for + * downloading data. + * @param cacheReadDataSourceFactory A {@link DataSource.Factory} for creating {@link DataSource}s + * for reading data from the cache. If null then a {@link FileDataSource.Factory} will be + * used. + * @param cacheWriteDataSinkFactory A {@link DataSink.Factory} for creating {@link DataSource}s + * for writing data to the cache. If null then a {@link CacheDataSinkFactory} will be used. + * @param priorityTaskManager A {@link PriorityTaskManager} to use when downloading. If non-null, + * downloaders will register as tasks with priority {@link C#PRIORITY_DOWNLOAD} whilst + * downloading. + */ + public DownloaderConstructorHelper( + Cache cache, + DataSource.Factory upstreamFactory, + @Nullable DataSource.Factory cacheReadDataSourceFactory, + @Nullable DataSink.Factory cacheWriteDataSinkFactory, + @Nullable PriorityTaskManager priorityTaskManager) { + this( + cache, + upstreamFactory, + cacheReadDataSourceFactory, + cacheWriteDataSinkFactory, + priorityTaskManager, + /* cacheKeyFactory= */ null); + } + + /** + * @param cache Cache instance to be used to store downloaded data. + * @param upstreamFactory A {@link DataSource.Factory} for creating {@link DataSource}s for + * downloading data. + * @param cacheReadDataSourceFactory A {@link DataSource.Factory} for creating {@link DataSource}s + * for reading data from the cache. If null then a {@link FileDataSource.Factory} will be + * used. + * @param cacheWriteDataSinkFactory A {@link DataSink.Factory} for creating {@link DataSource}s + * for writing data to the cache. If null then a {@link CacheDataSinkFactory} will be used. + * @param priorityTaskManager A {@link PriorityTaskManager} to use when downloading. If non-null, + * downloaders will register as tasks with priority {@link C#PRIORITY_DOWNLOAD} whilst + * downloading. + * @param cacheKeyFactory An optional factory for cache keys. + */ + public DownloaderConstructorHelper( + Cache cache, + DataSource.Factory upstreamFactory, + @Nullable DataSource.Factory cacheReadDataSourceFactory, + @Nullable DataSink.Factory cacheWriteDataSinkFactory, + @Nullable PriorityTaskManager priorityTaskManager, + @Nullable CacheKeyFactory cacheKeyFactory) { + if (priorityTaskManager != null) { + upstreamFactory = + new PriorityDataSourceFactory(upstreamFactory, priorityTaskManager, C.PRIORITY_DOWNLOAD); + } + DataSource.Factory readDataSourceFactory = + cacheReadDataSourceFactory != null + ? cacheReadDataSourceFactory + : new FileDataSource.Factory(); + if (cacheWriteDataSinkFactory == null) { + cacheWriteDataSinkFactory = + new CacheDataSinkFactory(cache, CacheDataSink.DEFAULT_FRAGMENT_SIZE); + } + onlineCacheDataSourceFactory = + new CacheDataSourceFactory( + cache, + upstreamFactory, + readDataSourceFactory, + cacheWriteDataSinkFactory, + CacheDataSource.FLAG_BLOCK_ON_CACHE, + /* eventListener= */ null, + cacheKeyFactory); + offlineCacheDataSourceFactory = + new CacheDataSourceFactory( + cache, + DummyDataSource.FACTORY, + readDataSourceFactory, + null, + CacheDataSource.FLAG_BLOCK_ON_CACHE, + /* eventListener= */ null, + cacheKeyFactory); + this.cache = cache; + this.priorityTaskManager = priorityTaskManager; + this.cacheKeyFactory = cacheKeyFactory; + } + + /** Returns the {@link Cache} instance. */ + public Cache getCache() { + return cache; + } + + /** Returns the {@link CacheKeyFactory}. */ + public CacheKeyFactory getCacheKeyFactory() { + return cacheKeyFactory != null ? cacheKeyFactory : CacheUtil.DEFAULT_CACHE_KEY_FACTORY; + } + + /** Returns a {@link PriorityTaskManager} instance. */ + public PriorityTaskManager getPriorityTaskManager() { + // Return a dummy PriorityTaskManager if none is provided. Create a new PriorityTaskManager + // each time so clients don't affect each other over the dummy PriorityTaskManager instance. + return priorityTaskManager != null ? priorityTaskManager : new PriorityTaskManager(); + } + + /** Returns a new {@link CacheDataSource} instance. */ + public CacheDataSource createCacheDataSource() { + return onlineCacheDataSourceFactory.createDataSource(); + } + + /** + * Returns a new {@link CacheDataSource} instance which accesses cache read-only and throws an + * exception on cache miss. + */ + public CacheDataSource createOfflineCacheDataSource() { + return offlineCacheDataSourceFactory.createDataSource(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloaderFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloaderFactory.java new file mode 100644 index 0000000000..944f55f161 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/DownloaderFactory.java @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +/** Creates {@link Downloader Downloaders} for given {@link DownloadRequest DownloadRequests}. */ +public interface DownloaderFactory { + + /** + * Creates a {@link Downloader} to perform the given {@link DownloadRequest}. + * + * @param action The action. + * @return The downloader. + */ + Downloader createDownloader(DownloadRequest action); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/FilterableManifest.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/FilterableManifest.java new file mode 100644 index 0000000000..1bd32f7d45 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/FilterableManifest.java @@ -0,0 +1,36 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import java.util.List; + +/** + * A manifest that can generate copies of itself including only the streams specified by the given + * keys. + * + * @param The manifest type. + */ +public interface FilterableManifest { + + /** + * Returns a copy of the manifest including only the streams specified by the given keys. If the + * manifest is unchanged then the instance may return itself. + * + * @param streamKeys A non-empty list of stream keys. + * @return The filtered manifest. + */ + T copy(List streamKeys); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/FilteringManifestParser.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/FilteringManifestParser.java new file mode 100644 index 0000000000..a34d749039 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/FilteringManifestParser.java @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.ParsingLoadable.Parser; +import java.io.IOException; +import java.io.InputStream; +import java.util.List; + +/** + * A manifest parser that includes only the streams identified by the given stream keys. + * + * @param The {@link FilterableManifest} type. + */ +public final class FilteringManifestParser> implements Parser { + + private final Parser parser; + @Nullable private final List streamKeys; + + /** + * @param parser A parser for the manifest that will be filtered. + * @param streamKeys The stream keys. If null or empty then filtering will not occur. + */ + public FilteringManifestParser(Parser parser, @Nullable List streamKeys) { + this.parser = parser; + this.streamKeys = streamKeys; + } + + @Override + public T parse(Uri uri, InputStream inputStream) throws IOException { + T manifest = parser.parse(uri, inputStream); + return streamKeys == null || streamKeys.isEmpty() ? manifest : manifest.copy(streamKeys); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/ProgressiveDownloader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/ProgressiveDownloader.java new file mode 100644 index 0000000000..7437dab5ca --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/ProgressiveDownloader.java @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.Cache; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheKeyFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.PriorityTaskManager; +import java.io.IOException; +import java.util.concurrent.atomic.AtomicBoolean; + +/** + * A downloader for progressive media streams. + * + *

The downloader attempts to download the entire media bytes referenced by a {@link Uri} into a + * cache as defined by {@link DownloaderConstructorHelper}. Callers can use the constructor to + * specify a custom cache key for the downloaded bytes. + * + *

The downloader will avoid downloading already-downloaded media bytes. + */ +public final class ProgressiveDownloader implements Downloader { + + private static final int BUFFER_SIZE_BYTES = 128 * 1024; + + private final DataSpec dataSpec; + private final Cache cache; + private final CacheDataSource dataSource; + private final CacheKeyFactory cacheKeyFactory; + private final PriorityTaskManager priorityTaskManager; + private final AtomicBoolean isCanceled; + + /** + * @param uri Uri of the data to be downloaded. + * @param customCacheKey A custom key that uniquely identifies the original stream. Used for cache + * indexing. May be null. + * @param constructorHelper A {@link DownloaderConstructorHelper} instance. + */ + public ProgressiveDownloader( + Uri uri, @Nullable String customCacheKey, DownloaderConstructorHelper constructorHelper) { + this.dataSpec = + new DataSpec( + uri, + /* absoluteStreamPosition= */ 0, + C.LENGTH_UNSET, + customCacheKey, + /* flags= */ DataSpec.FLAG_ALLOW_CACHE_FRAGMENTATION); + this.cache = constructorHelper.getCache(); + this.dataSource = constructorHelper.createCacheDataSource(); + this.cacheKeyFactory = constructorHelper.getCacheKeyFactory(); + this.priorityTaskManager = constructorHelper.getPriorityTaskManager(); + isCanceled = new AtomicBoolean(); + } + + @Override + public void download(@Nullable ProgressListener progressListener) + throws InterruptedException, IOException { + priorityTaskManager.add(C.PRIORITY_DOWNLOAD); + try { + CacheUtil.cache( + dataSpec, + cache, + cacheKeyFactory, + dataSource, + new byte[BUFFER_SIZE_BYTES], + priorityTaskManager, + C.PRIORITY_DOWNLOAD, + progressListener == null ? null : new ProgressForwarder(progressListener), + isCanceled, + /* enableEOFException= */ true); + } finally { + priorityTaskManager.remove(C.PRIORITY_DOWNLOAD); + } + } + + @Override + public void cancel() { + isCanceled.set(true); + } + + @Override + public void remove() { + CacheUtil.remove(dataSpec, cache, cacheKeyFactory); + } + + private static final class ProgressForwarder implements CacheUtil.ProgressListener { + + private final ProgressListener progessListener; + + public ProgressForwarder(ProgressListener progressListener) { + this.progessListener = progressListener; + } + + @Override + public void onProgress(long contentLength, long bytesCached, long newBytesCached) { + float percentDownloaded = + contentLength == C.LENGTH_UNSET || contentLength == 0 + ? C.PERCENTAGE_UNSET + : ((bytesCached * 100f) / contentLength); + progessListener.onProgress(contentLength, bytesCached, percentDownloaded); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/SegmentDownloader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/SegmentDownloader.java new file mode 100644 index 0000000000..92947b9bc9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/SegmentDownloader.java @@ -0,0 +1,279 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import android.net.Uri; +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.Cache; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheKeyFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.CacheUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.PriorityTaskManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.concurrent.atomic.AtomicBoolean; + +/** + * Base class for multi segment stream downloaders. + * + * @param The type of the manifest object. + */ +public abstract class SegmentDownloader> implements Downloader { + + /** Smallest unit of content to be downloaded. */ + protected static class Segment implements Comparable { + + /** The start time of the segment in microseconds. */ + public final long startTimeUs; + + /** The {@link DataSpec} of the segment. */ + public final DataSpec dataSpec; + + /** Constructs a Segment. */ + public Segment(long startTimeUs, DataSpec dataSpec) { + this.startTimeUs = startTimeUs; + this.dataSpec = dataSpec; + } + + @Override + public int compareTo(Segment other) { + return Util.compareLong(startTimeUs, other.startTimeUs); + } + } + + private static final int BUFFER_SIZE_BYTES = 128 * 1024; + + private final DataSpec manifestDataSpec; + private final Cache cache; + private final CacheDataSource dataSource; + private final CacheDataSource offlineDataSource; + private final CacheKeyFactory cacheKeyFactory; + private final PriorityTaskManager priorityTaskManager; + private final ArrayList streamKeys; + private final AtomicBoolean isCanceled; + + /** + * @param manifestUri The {@link Uri} of the manifest to be downloaded. + * @param streamKeys Keys defining which streams in the manifest should be selected for download. + * If empty, all streams are downloaded. + * @param constructorHelper A {@link DownloaderConstructorHelper} instance. + */ + public SegmentDownloader( + Uri manifestUri, List streamKeys, DownloaderConstructorHelper constructorHelper) { + this.manifestDataSpec = getCompressibleDataSpec(manifestUri); + this.streamKeys = new ArrayList<>(streamKeys); + this.cache = constructorHelper.getCache(); + this.dataSource = constructorHelper.createCacheDataSource(); + this.offlineDataSource = constructorHelper.createOfflineCacheDataSource(); + this.cacheKeyFactory = constructorHelper.getCacheKeyFactory(); + this.priorityTaskManager = constructorHelper.getPriorityTaskManager(); + isCanceled = new AtomicBoolean(); + } + + /** + * Downloads the selected streams in the media. If multiple streams are selected, they are + * downloaded in sync with one another. + * + * @throws IOException Thrown when there is an error downloading. + * @throws InterruptedException If the thread has been interrupted. + */ + @Override + public final void download(@Nullable ProgressListener progressListener) + throws IOException, InterruptedException { + priorityTaskManager.add(C.PRIORITY_DOWNLOAD); + try { + // Get the manifest and all of the segments. + M manifest = getManifest(dataSource, manifestDataSpec); + if (!streamKeys.isEmpty()) { + manifest = manifest.copy(streamKeys); + } + List segments = getSegments(dataSource, manifest, /* allowIncompleteList= */ false); + + // Scan the segments, removing any that are fully downloaded. + int totalSegments = segments.size(); + int segmentsDownloaded = 0; + long contentLength = 0; + long bytesDownloaded = 0; + for (int i = segments.size() - 1; i >= 0; i--) { + Segment segment = segments.get(i); + Pair segmentLengthAndBytesDownloaded = + CacheUtil.getCached(segment.dataSpec, cache, cacheKeyFactory); + long segmentLength = segmentLengthAndBytesDownloaded.first; + long segmentBytesDownloaded = segmentLengthAndBytesDownloaded.second; + bytesDownloaded += segmentBytesDownloaded; + if (segmentLength != C.LENGTH_UNSET) { + if (segmentLength == segmentBytesDownloaded) { + // The segment is fully downloaded. + segmentsDownloaded++; + segments.remove(i); + } + if (contentLength != C.LENGTH_UNSET) { + contentLength += segmentLength; + } + } else { + contentLength = C.LENGTH_UNSET; + } + } + Collections.sort(segments); + + // Download the segments. + @Nullable ProgressNotifier progressNotifier = null; + if (progressListener != null) { + progressNotifier = + new ProgressNotifier( + progressListener, + contentLength, + totalSegments, + bytesDownloaded, + segmentsDownloaded); + } + byte[] buffer = new byte[BUFFER_SIZE_BYTES]; + for (int i = 0; i < segments.size(); i++) { + CacheUtil.cache( + segments.get(i).dataSpec, + cache, + cacheKeyFactory, + dataSource, + buffer, + priorityTaskManager, + C.PRIORITY_DOWNLOAD, + progressNotifier, + isCanceled, + true); + if (progressNotifier != null) { + progressNotifier.onSegmentDownloaded(); + } + } + } finally { + priorityTaskManager.remove(C.PRIORITY_DOWNLOAD); + } + } + + @Override + public void cancel() { + isCanceled.set(true); + } + + @Override + public final void remove() throws InterruptedException { + try { + M manifest = getManifest(offlineDataSource, manifestDataSpec); + List segments = getSegments(offlineDataSource, manifest, true); + for (int i = 0; i < segments.size(); i++) { + removeDataSpec(segments.get(i).dataSpec); + } + } catch (IOException e) { + // Ignore exceptions when removing. + } finally { + // Always attempt to remove the manifest. + removeDataSpec(manifestDataSpec); + } + } + + // Internal methods. + + /** + * Loads and parses the manifest. + * + * @param dataSource The {@link DataSource} through which to load. + * @param dataSpec The manifest {@link DataSpec}. + * @return The manifest. + * @throws IOException If an error occurs reading data. + */ + protected abstract M getManifest(DataSource dataSource, DataSpec dataSpec) throws IOException; + + /** + * Returns a list of all downloadable {@link Segment}s for a given manifest. + * + * @param dataSource The {@link DataSource} through which to load any required data. + * @param manifest The manifest containing the segments. + * @param allowIncompleteList Whether to continue in the case that a load error prevents all + * segments from being listed. If true then a partial segment list will be returned. If false + * an {@link IOException} will be thrown. + * @return The list of downloadable {@link Segment}s. + * @throws InterruptedException Thrown if the thread was interrupted. + * @throws IOException Thrown if {@code allowPartialIndex} is false and a load error occurs, or if + * the media is not in a form that allows for its segments to be listed. + */ + protected abstract List getSegments( + DataSource dataSource, M manifest, boolean allowIncompleteList) + throws InterruptedException, IOException; + + private void removeDataSpec(DataSpec dataSpec) { + CacheUtil.remove(dataSpec, cache, cacheKeyFactory); + } + + protected static DataSpec getCompressibleDataSpec(Uri uri) { + return new DataSpec( + uri, + /* absoluteStreamPosition= */ 0, + /* length= */ C.LENGTH_UNSET, + /* key= */ null, + /* flags= */ DataSpec.FLAG_ALLOW_GZIP); + } + + private static final class ProgressNotifier implements CacheUtil.ProgressListener { + + private final ProgressListener progressListener; + + private final long contentLength; + private final int totalSegments; + + private long bytesDownloaded; + private int segmentsDownloaded; + + public ProgressNotifier( + ProgressListener progressListener, + long contentLength, + int totalSegments, + long bytesDownloaded, + int segmentsDownloaded) { + this.progressListener = progressListener; + this.contentLength = contentLength; + this.totalSegments = totalSegments; + this.bytesDownloaded = bytesDownloaded; + this.segmentsDownloaded = segmentsDownloaded; + } + + @Override + public void onProgress(long requestLength, long bytesCached, long newBytesCached) { + bytesDownloaded += newBytesCached; + progressListener.onProgress(contentLength, bytesDownloaded, getPercentDownloaded()); + } + + public void onSegmentDownloaded() { + segmentsDownloaded++; + progressListener.onProgress(contentLength, bytesDownloaded, getPercentDownloaded()); + } + + private float getPercentDownloaded() { + if (contentLength != C.LENGTH_UNSET && contentLength != 0) { + return (bytesDownloaded * 100f) / contentLength; + } else if (totalSegments != 0) { + return (segmentsDownloaded * 100f) / totalSegments; + } else { + return C.PERCENTAGE_UNSET; + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/StreamKey.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/StreamKey.java new file mode 100644 index 0000000000..acbcc9afa4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/StreamKey.java @@ -0,0 +1,132 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; + +/** + * A key for a subset of media which can be separately loaded (a "stream"). + * + *

The stream key consists of a period index, a group index within the period and a track index + * within the group. The interpretation of these indices depends on the type of media for which the + * stream key is used. + */ +public final class StreamKey implements Comparable, Parcelable { + + /** The period index. */ + public final int periodIndex; + /** The group index. */ + public final int groupIndex; + /** The track index. */ + public final int trackIndex; + + /** + * @param groupIndex The group index. + * @param trackIndex The track index. + */ + public StreamKey(int groupIndex, int trackIndex) { + this(0, groupIndex, trackIndex); + } + + /** + * @param periodIndex The period index. + * @param groupIndex The group index. + * @param trackIndex The track index. + */ + public StreamKey(int periodIndex, int groupIndex, int trackIndex) { + this.periodIndex = periodIndex; + this.groupIndex = groupIndex; + this.trackIndex = trackIndex; + } + + /* package */ StreamKey(Parcel in) { + periodIndex = in.readInt(); + groupIndex = in.readInt(); + trackIndex = in.readInt(); + } + + @Override + public String toString() { + return periodIndex + "." + groupIndex + "." + trackIndex; + } + + @Override + public boolean equals(@Nullable Object o) { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + + StreamKey that = (StreamKey) o; + return periodIndex == that.periodIndex + && groupIndex == that.groupIndex + && trackIndex == that.trackIndex; + } + + @Override + public int hashCode() { + int result = periodIndex; + result = 31 * result + groupIndex; + result = 31 * result + trackIndex; + return result; + } + + // Comparable implementation. + + @Override + public int compareTo(StreamKey o) { + int result = periodIndex - o.periodIndex; + if (result == 0) { + result = groupIndex - o.groupIndex; + if (result == 0) { + result = trackIndex - o.trackIndex; + } + } + return result; + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeInt(periodIndex); + dest.writeInt(groupIndex); + dest.writeInt(trackIndex); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public StreamKey createFromParcel(Parcel in) { + return new StreamKey(in); + } + + @Override + public StreamKey[] newArray(int size) { + return new StreamKey[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/WritableDownloadIndex.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/WritableDownloadIndex.java new file mode 100644 index 0000000000..f57619f0c4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/WritableDownloadIndex.java @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import androidx.annotation.WorkerThread; +import java.io.IOException; + +/** A writable index of {@link Download Downloads}. */ +@WorkerThread +public interface WritableDownloadIndex extends DownloadIndex { + + /** + * Adds or replaces a {@link Download}. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param download The {@link Download} to be added. + * @throws IOException If an error occurs setting the state. + */ + void putDownload(Download download) throws IOException; + + /** + * Removes the download with the given ID. Does nothing if a download with the given ID does not + * exist. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param id The ID of the download to remove. + * @throws IOException If an error occurs removing the state. + */ + void removeDownload(String id) throws IOException; + + /** + * Sets all {@link Download#STATE_DOWNLOADING} states to {@link Download#STATE_QUEUED}. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @throws IOException If an error occurs updating the state. + */ + void setDownloadingStatesToQueued() throws IOException; + + /** + * Sets all states to {@link Download#STATE_REMOVING}. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @throws IOException If an error occurs updating the state. + */ + void setStatesToRemoving() throws IOException; + + /** + * Sets the stop reason of the downloads in a terminal state ({@link Download#STATE_COMPLETED}, + * {@link Download#STATE_FAILED}). + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param stopReason The stop reason. + * @throws IOException If an error occurs updating the state. + */ + void setStopReason(int stopReason) throws IOException; + + /** + * Sets the stop reason of the download with the given ID in a terminal state ({@link + * Download#STATE_COMPLETED}, {@link Download#STATE_FAILED}). Does nothing if a download with the + * given ID does not exist, or if it's not in a terminal state. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param id The ID of the download to update. + * @param stopReason The stop reason. + * @throws IOException If an error occurs updating the state. + */ + void setStopReason(String id, int stopReason) throws IOException; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/package-info.java new file mode 100644 index 0000000000..a353e22107 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/offline/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.offline; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/package-info.java new file mode 100644 index 0000000000..d9cb1c1493 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/PlatformScheduler.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/PlatformScheduler.java new file mode 100644 index 0000000000..bb866944d4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/PlatformScheduler.java @@ -0,0 +1,150 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.scheduler; + +import android.annotation.TargetApi; +import android.app.job.JobInfo; +import android.app.job.JobParameters; +import android.app.job.JobScheduler; +import android.app.job.JobService; +import android.content.ComponentName; +import android.content.Context; +import android.content.Intent; +import android.os.PersistableBundle; +import androidx.annotation.RequiresPermission; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * A {@link Scheduler} that uses {@link JobScheduler}. To use this scheduler, you must add {@link + * PlatformSchedulerService} to your manifest: + * + * 

{@literal
+ * 
+ * 
+ *
+ * 
+ * }
+ */ +@TargetApi(21) +public final class PlatformScheduler implements Scheduler { + + private static final boolean DEBUG = false; + private static final String TAG = "PlatformScheduler"; + private static final String KEY_SERVICE_ACTION = "service_action"; + private static final String KEY_SERVICE_PACKAGE = "service_package"; + private static final String KEY_REQUIREMENTS = "requirements"; + + private final int jobId; + private final ComponentName jobServiceComponentName; + private final JobScheduler jobScheduler; + + /** + * @param context Any context. + * @param jobId An identifier for the jobs scheduled by this instance. If the same identifier was + * used by a previous instance, anything scheduled by the previous instance will be canceled + * by this instance if {@link #schedule(Requirements, String, String)} or {@link #cancel()} + * are called. + */ + @RequiresPermission(android.Manifest.permission.RECEIVE_BOOT_COMPLETED) + public PlatformScheduler(Context context, int jobId) { + context = context.getApplicationContext(); + this.jobId = jobId; + jobServiceComponentName = new ComponentName(context, PlatformSchedulerService.class); + jobScheduler = (JobScheduler) context.getSystemService(Context.JOB_SCHEDULER_SERVICE); + } + + @Override + public boolean schedule(Requirements requirements, String servicePackage, String serviceAction) { + JobInfo jobInfo = + buildJobInfo(jobId, jobServiceComponentName, requirements, serviceAction, servicePackage); + int result = jobScheduler.schedule(jobInfo); + logd("Scheduling job: " + jobId + " result: " + result); + return result == JobScheduler.RESULT_SUCCESS; + } + + @Override + public boolean cancel() { + logd("Canceling job: " + jobId); + jobScheduler.cancel(jobId); + return true; + } + + // @RequiresPermission constructor annotation should ensure the permission is present. + @SuppressWarnings("MissingPermission") + private static JobInfo buildJobInfo( + int jobId, + ComponentName jobServiceComponentName, + Requirements requirements, + String serviceAction, + String servicePackage) { + JobInfo.Builder builder = new JobInfo.Builder(jobId, jobServiceComponentName); + + if (requirements.isUnmeteredNetworkRequired()) { + builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED); + } else if (requirements.isNetworkRequired()) { + builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_ANY); + } + builder.setRequiresDeviceIdle(requirements.isIdleRequired()); + builder.setRequiresCharging(requirements.isChargingRequired()); + builder.setPersisted(true); + + PersistableBundle extras = new PersistableBundle(); + extras.putString(KEY_SERVICE_ACTION, serviceAction); + extras.putString(KEY_SERVICE_PACKAGE, servicePackage); + extras.putInt(KEY_REQUIREMENTS, requirements.getRequirements()); + builder.setExtras(extras); + + return builder.build(); + } + + private static void logd(String message) { + if (DEBUG) { + Log.d(TAG, message); + } + } + + /** A {@link JobService} that starts the target service if the requirements are met. */ + public static final class PlatformSchedulerService extends JobService { + @Override + public boolean onStartJob(JobParameters params) { + logd("PlatformSchedulerService started"); + PersistableBundle extras = params.getExtras(); + Requirements requirements = new Requirements(extras.getInt(KEY_REQUIREMENTS)); + if (requirements.checkRequirements(this)) { + logd("Requirements are met"); + String serviceAction = extras.getString(KEY_SERVICE_ACTION); + String servicePackage = extras.getString(KEY_SERVICE_PACKAGE); + Intent intent = + new Intent(Assertions.checkNotNull(serviceAction)).setPackage(servicePackage); + logd("Starting service action: " + serviceAction + " package: " + servicePackage); + Util.startForegroundService(this, intent); + } else { + logd("Requirements are not met"); + jobFinished(params, /* needsReschedule */ true); + } + return false; + } + + @Override + public boolean onStopJob(JobParameters params) { + return false; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/Requirements.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/Requirements.java new file mode 100644 index 0000000000..9ef8fdb3f6 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/Requirements.java @@ -0,0 +1,223 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.scheduler; + +import android.content.Context; +import android.content.Intent; +import android.content.IntentFilter; +import android.net.ConnectivityManager; +import android.net.Network; +import android.net.NetworkCapabilities; +import android.net.NetworkInfo; +import android.os.BatteryManager; +import android.os.Parcel; +import android.os.Parcelable; +import android.os.PowerManager; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** Defines a set of device state requirements. */ +public final class Requirements implements Parcelable { + + /** + * Requirement flags. Possible flag values are {@link #NETWORK}, {@link #NETWORK_UNMETERED}, + * {@link #DEVICE_IDLE} and {@link #DEVICE_CHARGING}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {NETWORK, NETWORK_UNMETERED, DEVICE_IDLE, DEVICE_CHARGING}) + public @interface RequirementFlags {} + + /** Requirement that the device has network connectivity. */ + public static final int NETWORK = 1; + /** Requirement that the device has a network connection that is unmetered. */ + public static final int NETWORK_UNMETERED = 1 << 1; + /** Requirement that the device is idle. */ + public static final int DEVICE_IDLE = 1 << 2; + /** Requirement that the device is charging. */ + public static final int DEVICE_CHARGING = 1 << 3; + + @RequirementFlags private final int requirements; + + /** @param requirements A combination of requirement flags. */ + public Requirements(@RequirementFlags int requirements) { + if ((requirements & NETWORK_UNMETERED) != 0) { + // Make sure network requirement flags are consistent. + requirements |= NETWORK; + } + this.requirements = requirements; + } + + /** Returns the requirements. */ + @RequirementFlags + public int getRequirements() { + return requirements; + } + + /** Returns whether network connectivity is required. */ + public boolean isNetworkRequired() { + return (requirements & NETWORK) != 0; + } + + /** Returns whether un-metered network connectivity is required. */ + public boolean isUnmeteredNetworkRequired() { + return (requirements & NETWORK_UNMETERED) != 0; + } + + /** Returns whether the device is required to be charging. */ + public boolean isChargingRequired() { + return (requirements & DEVICE_CHARGING) != 0; + } + + /** Returns whether the device is required to be idle. */ + public boolean isIdleRequired() { + return (requirements & DEVICE_IDLE) != 0; + } + + /** + * Returns whether the requirements are met. + * + * @param context Any context. + * @return Whether the requirements are met. + */ + public boolean checkRequirements(Context context) { + return getNotMetRequirements(context) == 0; + } + + /** + * Returns requirements that are not met, or 0. + * + * @param context Any context. + * @return The requirements that are not met, or 0. + */ + @RequirementFlags + public int getNotMetRequirements(Context context) { + @RequirementFlags int notMetRequirements = getNotMetNetworkRequirements(context); + if (isChargingRequired() && !isDeviceCharging(context)) { + notMetRequirements |= DEVICE_CHARGING; + } + if (isIdleRequired() && !isDeviceIdle(context)) { + notMetRequirements |= DEVICE_IDLE; + } + return notMetRequirements; + } + + @RequirementFlags + private int getNotMetNetworkRequirements(Context context) { + if (!isNetworkRequired()) { + return 0; + } + + ConnectivityManager connectivityManager = + (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); + NetworkInfo networkInfo = Assertions.checkNotNull(connectivityManager).getActiveNetworkInfo(); + if (networkInfo == null + || !networkInfo.isConnected() + || !isInternetConnectivityValidated(connectivityManager)) { + return requirements & (NETWORK | NETWORK_UNMETERED); + } + + if (isUnmeteredNetworkRequired() && connectivityManager.isActiveNetworkMetered()) { + return NETWORK_UNMETERED; + } + + return 0; + } + + private boolean isDeviceCharging(Context context) { + Intent batteryStatus = + context.registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); + if (batteryStatus == null) { + return false; + } + int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1); + return status == BatteryManager.BATTERY_STATUS_CHARGING + || status == BatteryManager.BATTERY_STATUS_FULL; + } + + private boolean isDeviceIdle(Context context) { + PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); + return Util.SDK_INT >= 23 + ? powerManager.isDeviceIdleMode() + : Util.SDK_INT >= 20 ? !powerManager.isInteractive() : !powerManager.isScreenOn(); + } + + private static boolean isInternetConnectivityValidated(ConnectivityManager connectivityManager) { + // It's possible to query NetworkCapabilities from API level 23, but RequirementsWatcher only + // fires an event to update its Requirements when NetworkCapabilities change from API level 24. + // Since Requirements won't be updated, we assume connectivity is validated on API level 23. + if (Util.SDK_INT < 24) { + return true; + } + Network activeNetwork = connectivityManager.getActiveNetwork(); + if (activeNetwork == null) { + return false; + } + NetworkCapabilities networkCapabilities = + connectivityManager.getNetworkCapabilities(activeNetwork); + return networkCapabilities != null + && networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); + } + + @Override + public boolean equals(@Nullable Object o) { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + return requirements == ((Requirements) o).requirements; + } + + @Override + public int hashCode() { + return requirements; + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeInt(requirements); + } + + public static final Parcelable.Creator CREATOR = + new Creator() { + + @Override + public Requirements createFromParcel(Parcel in) { + return new Requirements(in.readInt()); + } + + @Override + public Requirements[] newArray(int size) { + return new Requirements[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/RequirementsWatcher.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/RequirementsWatcher.java new file mode 100644 index 0000000000..edb860ac05 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/RequirementsWatcher.java @@ -0,0 +1,197 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.scheduler; + +import android.annotation.TargetApi; +import android.content.BroadcastReceiver; +import android.content.Context; +import android.content.Intent; +import android.content.IntentFilter; +import android.net.ConnectivityManager; +import android.net.Network; +import android.net.NetworkCapabilities; +import android.os.Handler; +import android.os.Looper; +import android.os.PowerManager; +import androidx.annotation.Nullable; +import androidx.annotation.RequiresApi; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Watches whether the {@link Requirements} are met and notifies the {@link Listener} on changes. + */ +public final class RequirementsWatcher { + + /** + * Notified when RequirementsWatcher instance first created and on changes whether the {@link + * Requirements} are met. + */ + public interface Listener { + /** + * Called when there is a change on the met requirements. + * + * @param requirementsWatcher Calling instance. + * @param notMetRequirements {@link Requirements.RequirementFlags RequirementFlags} that are not + * met, or 0. + */ + void onRequirementsStateChanged( + RequirementsWatcher requirementsWatcher, + @Requirements.RequirementFlags int notMetRequirements); + } + + private final Context context; + private final Listener listener; + private final Requirements requirements; + private final Handler handler; + + @Nullable private DeviceStatusChangeReceiver receiver; + + @Requirements.RequirementFlags private int notMetRequirements; + @Nullable private NetworkCallback networkCallback; + + /** + * @param context Any context. + * @param listener Notified whether the {@link Requirements} are met. + * @param requirements The requirements to watch. + */ + public RequirementsWatcher(Context context, Listener listener, Requirements requirements) { + this.context = context.getApplicationContext(); + this.listener = listener; + this.requirements = requirements; + handler = new Handler(Util.getLooper()); + } + + /** + * Starts watching for changes. Must be called from a thread that has an associated {@link + * Looper}. Listener methods are called on the caller thread. + * + * @return Initial {@link Requirements.RequirementFlags RequirementFlags} that are not met, or 0. + */ + @Requirements.RequirementFlags + public int start() { + notMetRequirements = requirements.getNotMetRequirements(context); + + IntentFilter filter = new IntentFilter(); + if (requirements.isNetworkRequired()) { + if (Util.SDK_INT >= 24) { + registerNetworkCallbackV24(); + } else { + filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION); + } + } + if (requirements.isChargingRequired()) { + filter.addAction(Intent.ACTION_POWER_CONNECTED); + filter.addAction(Intent.ACTION_POWER_DISCONNECTED); + } + if (requirements.isIdleRequired()) { + if (Util.SDK_INT >= 23) { + filter.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED); + } else { + filter.addAction(Intent.ACTION_SCREEN_ON); + filter.addAction(Intent.ACTION_SCREEN_OFF); + } + } + receiver = new DeviceStatusChangeReceiver(); + context.registerReceiver(receiver, filter, null, handler); + return notMetRequirements; + } + + /** Stops watching for changes. */ + public void stop() { + context.unregisterReceiver(Assertions.checkNotNull(receiver)); + receiver = null; + if (Util.SDK_INT >= 24 && networkCallback != null) { + unregisterNetworkCallbackV24(); + } + } + + /** Returns watched {@link Requirements}. */ + public Requirements getRequirements() { + return requirements; + } + + @TargetApi(24) + private void registerNetworkCallbackV24() { + ConnectivityManager connectivityManager = + Assertions.checkNotNull( + (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE)); + networkCallback = new NetworkCallback(); + connectivityManager.registerDefaultNetworkCallback(networkCallback); + } + + @TargetApi(24) + private void unregisterNetworkCallbackV24() { + ConnectivityManager connectivityManager = + (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); + connectivityManager.unregisterNetworkCallback(Assertions.checkNotNull(networkCallback)); + networkCallback = null; + } + + private void checkRequirements() { + @Requirements.RequirementFlags + int notMetRequirements = requirements.getNotMetRequirements(context); + if (this.notMetRequirements != notMetRequirements) { + this.notMetRequirements = notMetRequirements; + listener.onRequirementsStateChanged(this, notMetRequirements); + } + } + + private class DeviceStatusChangeReceiver extends BroadcastReceiver { + @Override + public void onReceive(Context context, Intent intent) { + if (!isInitialStickyBroadcast()) { + checkRequirements(); + } + } + } + + @RequiresApi(24) + private final class NetworkCallback extends ConnectivityManager.NetworkCallback { + boolean receivedCapabilitiesChange; + boolean networkValidated; + + @Override + public void onAvailable(Network network) { + onNetworkCallback(); + } + + @Override + public void onLost(Network network) { + onNetworkCallback(); + } + + @Override + public void onCapabilitiesChanged(Network network, NetworkCapabilities networkCapabilities) { + boolean networkValidated = + networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); + if (!receivedCapabilitiesChange || this.networkValidated != networkValidated) { + receivedCapabilitiesChange = true; + this.networkValidated = networkValidated; + onNetworkCallback(); + } + } + + private void onNetworkCallback() { + handler.post( + () -> { + if (networkCallback != null) { + checkRequirements(); + } + }); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/Scheduler.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/Scheduler.java new file mode 100644 index 0000000000..c7a7afcd2d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/Scheduler.java @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.scheduler; + +import android.app.Notification; +import android.app.Service; +import android.content.Intent; + +/** Schedules a service to be started in the foreground when some {@link Requirements} are met. */ +public interface Scheduler { + + /** + * Schedules a service to be started in the foreground when some {@link Requirements} are met. + * Anything that was previously scheduled will be canceled. + * + *

The service to be started must be declared in the manifest of {@code servicePackage} with an + * intent filter containing {@code serviceAction}. Note that when started with {@code + * serviceAction}, the service must call {@link Service#startForeground(int, Notification)} to + * make itself a foreground service, as documented by {@link + * Service#startForegroundService(Intent)}. + * + * @param requirements The requirements. + * @param servicePackage The package name. + * @param serviceAction The action with which the service will be started. + * @return Whether scheduling was successful. + */ + boolean schedule(Requirements requirements, String servicePackage, String serviceAction); + + /** + * Cancels anything that was previously scheduled, or else does nothing. + * + * @return Whether cancellation was successful. + */ + boolean cancel(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/package-info.java new file mode 100644 index 0000000000..b4e68ebfff --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.scheduler; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/AbstractConcatenatedTimeline.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/AbstractConcatenatedTimeline.java new file mode 100644 index 0000000000..1f67f7e645 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/AbstractConcatenatedTimeline.java @@ -0,0 +1,327 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.util.Pair; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** Abstract base class for the concatenation of one or more {@link Timeline}s. */ +/* package */ abstract class AbstractConcatenatedTimeline extends Timeline { + + private final int childCount; + private final ShuffleOrder shuffleOrder; + private final boolean isAtomic; + + /** + * Returns UID of child timeline from a concatenated period UID. + * + * @param concatenatedUid UID of a period in a concatenated timeline. + * @return UID of the child timeline this period belongs to. + */ + @SuppressWarnings("nullness:return.type.incompatible") + public static Object getChildTimelineUidFromConcatenatedUid(Object concatenatedUid) { + return ((Pair) concatenatedUid).first; + } + + /** + * Returns UID of the period in the child timeline from a concatenated period UID. + * + * @param concatenatedUid UID of a period in a concatenated timeline. + * @return UID of the period in the child timeline. + */ + @SuppressWarnings("nullness:return.type.incompatible") + public static Object getChildPeriodUidFromConcatenatedUid(Object concatenatedUid) { + return ((Pair) concatenatedUid).second; + } + + /** + * Returns a concatenated UID for a period or window in a child timeline. + * + * @param childTimelineUid UID of the child timeline this period or window belongs to. + * @param childPeriodOrWindowUid UID of the period or window in the child timeline. + * @return UID of the period or window in the concatenated timeline. + */ + public static Object getConcatenatedUid(Object childTimelineUid, Object childPeriodOrWindowUid) { + return Pair.create(childTimelineUid, childPeriodOrWindowUid); + } + + /** + * Sets up a concatenated timeline with a shuffle order of child timelines. + * + * @param isAtomic Whether the child timelines shall be treated as atomic, i.e., treated as a + * single item for repeating and shuffling. + * @param shuffleOrder A shuffle order of child timelines. The number of child timelines must + * match the number of elements in the shuffle order. + */ + public AbstractConcatenatedTimeline(boolean isAtomic, ShuffleOrder shuffleOrder) { + this.isAtomic = isAtomic; + this.shuffleOrder = shuffleOrder; + this.childCount = shuffleOrder.getLength(); + } + + @Override + public int getNextWindowIndex( + int windowIndex, @Player.RepeatMode int repeatMode, boolean shuffleModeEnabled) { + if (isAtomic) { + // Adapt repeat and shuffle mode to atomic concatenation. + repeatMode = repeatMode == Player.REPEAT_MODE_ONE ? Player.REPEAT_MODE_ALL : repeatMode; + shuffleModeEnabled = false; + } + // Find next window within current child. + int childIndex = getChildIndexByWindowIndex(windowIndex); + int firstWindowIndexInChild = getFirstWindowIndexByChildIndex(childIndex); + int nextWindowIndexInChild = + getTimelineByChildIndex(childIndex) + .getNextWindowIndex( + windowIndex - firstWindowIndexInChild, + repeatMode == Player.REPEAT_MODE_ALL ? Player.REPEAT_MODE_OFF : repeatMode, + shuffleModeEnabled); + if (nextWindowIndexInChild != C.INDEX_UNSET) { + return firstWindowIndexInChild + nextWindowIndexInChild; + } + // If not found, find first window of next non-empty child. + int nextChildIndex = getNextChildIndex(childIndex, shuffleModeEnabled); + while (nextChildIndex != C.INDEX_UNSET && getTimelineByChildIndex(nextChildIndex).isEmpty()) { + nextChildIndex = getNextChildIndex(nextChildIndex, shuffleModeEnabled); + } + if (nextChildIndex != C.INDEX_UNSET) { + return getFirstWindowIndexByChildIndex(nextChildIndex) + + getTimelineByChildIndex(nextChildIndex).getFirstWindowIndex(shuffleModeEnabled); + } + // If not found, this is the last window. + if (repeatMode == Player.REPEAT_MODE_ALL) { + return getFirstWindowIndex(shuffleModeEnabled); + } + return C.INDEX_UNSET; + } + + @Override + public int getPreviousWindowIndex( + int windowIndex, @Player.RepeatMode int repeatMode, boolean shuffleModeEnabled) { + if (isAtomic) { + // Adapt repeat and shuffle mode to atomic concatenation. + repeatMode = repeatMode == Player.REPEAT_MODE_ONE ? Player.REPEAT_MODE_ALL : repeatMode; + shuffleModeEnabled = false; + } + // Find previous window within current child. + int childIndex = getChildIndexByWindowIndex(windowIndex); + int firstWindowIndexInChild = getFirstWindowIndexByChildIndex(childIndex); + int previousWindowIndexInChild = + getTimelineByChildIndex(childIndex) + .getPreviousWindowIndex( + windowIndex - firstWindowIndexInChild, + repeatMode == Player.REPEAT_MODE_ALL ? Player.REPEAT_MODE_OFF : repeatMode, + shuffleModeEnabled); + if (previousWindowIndexInChild != C.INDEX_UNSET) { + return firstWindowIndexInChild + previousWindowIndexInChild; + } + // If not found, find last window of previous non-empty child. + int previousChildIndex = getPreviousChildIndex(childIndex, shuffleModeEnabled); + while (previousChildIndex != C.INDEX_UNSET + && getTimelineByChildIndex(previousChildIndex).isEmpty()) { + previousChildIndex = getPreviousChildIndex(previousChildIndex, shuffleModeEnabled); + } + if (previousChildIndex != C.INDEX_UNSET) { + return getFirstWindowIndexByChildIndex(previousChildIndex) + + getTimelineByChildIndex(previousChildIndex).getLastWindowIndex(shuffleModeEnabled); + } + // If not found, this is the first window. + if (repeatMode == Player.REPEAT_MODE_ALL) { + return getLastWindowIndex(shuffleModeEnabled); + } + return C.INDEX_UNSET; + } + + @Override + public int getLastWindowIndex(boolean shuffleModeEnabled) { + if (childCount == 0) { + return C.INDEX_UNSET; + } + if (isAtomic) { + shuffleModeEnabled = false; + } + // Find last non-empty child. + int lastChildIndex = shuffleModeEnabled ? shuffleOrder.getLastIndex() : childCount - 1; + while (getTimelineByChildIndex(lastChildIndex).isEmpty()) { + lastChildIndex = getPreviousChildIndex(lastChildIndex, shuffleModeEnabled); + if (lastChildIndex == C.INDEX_UNSET) { + // All children are empty. + return C.INDEX_UNSET; + } + } + return getFirstWindowIndexByChildIndex(lastChildIndex) + + getTimelineByChildIndex(lastChildIndex).getLastWindowIndex(shuffleModeEnabled); + } + + @Override + public int getFirstWindowIndex(boolean shuffleModeEnabled) { + if (childCount == 0) { + return C.INDEX_UNSET; + } + if (isAtomic) { + shuffleModeEnabled = false; + } + // Find first non-empty child. + int firstChildIndex = shuffleModeEnabled ? shuffleOrder.getFirstIndex() : 0; + while (getTimelineByChildIndex(firstChildIndex).isEmpty()) { + firstChildIndex = getNextChildIndex(firstChildIndex, shuffleModeEnabled); + if (firstChildIndex == C.INDEX_UNSET) { + // All children are empty. + return C.INDEX_UNSET; + } + } + return getFirstWindowIndexByChildIndex(firstChildIndex) + + getTimelineByChildIndex(firstChildIndex).getFirstWindowIndex(shuffleModeEnabled); + } + + @Override + public final Window getWindow(int windowIndex, Window window, long defaultPositionProjectionUs) { + int childIndex = getChildIndexByWindowIndex(windowIndex); + int firstWindowIndexInChild = getFirstWindowIndexByChildIndex(childIndex); + int firstPeriodIndexInChild = getFirstPeriodIndexByChildIndex(childIndex); + getTimelineByChildIndex(childIndex) + .getWindow(windowIndex - firstWindowIndexInChild, window, defaultPositionProjectionUs); + Object childUid = getChildUidByChildIndex(childIndex); + // Don't create new objects if the child is using SINGLE_WINDOW_UID. + window.uid = + Window.SINGLE_WINDOW_UID.equals(window.uid) + ? childUid + : getConcatenatedUid(childUid, window.uid); + window.firstPeriodIndex += firstPeriodIndexInChild; + window.lastPeriodIndex += firstPeriodIndexInChild; + return window; + } + + @Override + public final Period getPeriodByUid(Object uid, Period period) { + Object childUid = getChildTimelineUidFromConcatenatedUid(uid); + Object periodUid = getChildPeriodUidFromConcatenatedUid(uid); + int childIndex = getChildIndexByChildUid(childUid); + int firstWindowIndexInChild = getFirstWindowIndexByChildIndex(childIndex); + getTimelineByChildIndex(childIndex).getPeriodByUid(periodUid, period); + period.windowIndex += firstWindowIndexInChild; + period.uid = uid; + return period; + } + + @Override + public final Period getPeriod(int periodIndex, Period period, boolean setIds) { + int childIndex = getChildIndexByPeriodIndex(periodIndex); + int firstWindowIndexInChild = getFirstWindowIndexByChildIndex(childIndex); + int firstPeriodIndexInChild = getFirstPeriodIndexByChildIndex(childIndex); + getTimelineByChildIndex(childIndex) + .getPeriod(periodIndex - firstPeriodIndexInChild, period, setIds); + period.windowIndex += firstWindowIndexInChild; + if (setIds) { + period.uid = + getConcatenatedUid( + getChildUidByChildIndex(childIndex), Assertions.checkNotNull(period.uid)); + } + return period; + } + + @Override + public final int getIndexOfPeriod(Object uid) { + if (!(uid instanceof Pair)) { + return C.INDEX_UNSET; + } + Object childUid = getChildTimelineUidFromConcatenatedUid(uid); + Object periodUid = getChildPeriodUidFromConcatenatedUid(uid); + int childIndex = getChildIndexByChildUid(childUid); + if (childIndex == C.INDEX_UNSET) { + return C.INDEX_UNSET; + } + int periodIndexInChild = getTimelineByChildIndex(childIndex).getIndexOfPeriod(periodUid); + return periodIndexInChild == C.INDEX_UNSET + ? C.INDEX_UNSET + : getFirstPeriodIndexByChildIndex(childIndex) + periodIndexInChild; + } + + @Override + public final Object getUidOfPeriod(int periodIndex) { + int childIndex = getChildIndexByPeriodIndex(periodIndex); + int firstPeriodIndexInChild = getFirstPeriodIndexByChildIndex(childIndex); + Object periodUidInChild = + getTimelineByChildIndex(childIndex).getUidOfPeriod(periodIndex - firstPeriodIndexInChild); + return getConcatenatedUid(getChildUidByChildIndex(childIndex), periodUidInChild); + } + + /** + * Returns the index of the child timeline containing the given period index. + * + * @param periodIndex A valid period index within the bounds of the timeline. + */ + protected abstract int getChildIndexByPeriodIndex(int periodIndex); + + /** + * Returns the index of the child timeline containing the given window index. + * + * @param windowIndex A valid window index within the bounds of the timeline. + */ + protected abstract int getChildIndexByWindowIndex(int windowIndex); + + /** + * Returns the index of the child timeline with the given UID or {@link C#INDEX_UNSET} if not + * found. + * + * @param childUid A child UID. + * @return Index of child timeline or {@link C#INDEX_UNSET} if UID was not found. + */ + protected abstract int getChildIndexByChildUid(Object childUid); + + /** + * Returns the child timeline for the child with the given index. + * + * @param childIndex A valid child index within the bounds of the timeline. + */ + protected abstract Timeline getTimelineByChildIndex(int childIndex); + + /** + * Returns the first period index belonging to the child timeline with the given index. + * + * @param childIndex A valid child index within the bounds of the timeline. + */ + protected abstract int getFirstPeriodIndexByChildIndex(int childIndex); + + /** + * Returns the first window index belonging to the child timeline with the given index. + * + * @param childIndex A valid child index within the bounds of the timeline. + */ + protected abstract int getFirstWindowIndexByChildIndex(int childIndex); + + /** + * Returns the UID of the child timeline with the given index. + * + * @param childIndex A valid child index within the bounds of the timeline. + */ + protected abstract Object getChildUidByChildIndex(int childIndex); + + private int getNextChildIndex(int childIndex, boolean shuffleModeEnabled) { + return shuffleModeEnabled + ? shuffleOrder.getNextIndex(childIndex) + : childIndex < childCount - 1 ? childIndex + 1 : C.INDEX_UNSET; + } + + private int getPreviousChildIndex(int childIndex, boolean shuffleModeEnabled) { + return shuffleModeEnabled + ? shuffleOrder.getPreviousIndex(childIndex) + : childIndex > 0 ? childIndex - 1 : C.INDEX_UNSET; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/AdaptiveMediaSourceEventListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/AdaptiveMediaSourceEventListener.java new file mode 100644 index 0000000000..dba911f622 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/AdaptiveMediaSourceEventListener.java @@ -0,0 +1,24 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +/** + * Interface for callbacks to be notified of {@link MediaSource} events. + * + * @deprecated Use {@link MediaSourceEventListener}. + */ +@Deprecated +public interface AdaptiveMediaSourceEventListener extends MediaSourceEventListener {} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/BaseMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/BaseMediaSource.java new file mode 100644 index 0000000000..f9ca6ff311 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/BaseMediaSource.java @@ -0,0 +1,191 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.os.Handler; +import android.os.Looper; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.ArrayList; +import java.util.HashSet; + +/** + * Base {@link MediaSource} implementation to handle parallel reuse and to keep a list of {@link + * MediaSourceEventListener}s. + * + *

Whenever an implementing subclass needs to provide a new timeline, it must call {@link + * #refreshSourceInfo(Timeline)} to notify all listeners. + */ +public abstract class BaseMediaSource implements MediaSource { + + private final ArrayList mediaSourceCallers; + private final HashSet enabledMediaSourceCallers; + private final MediaSourceEventListener.EventDispatcher eventDispatcher; + + @Nullable private Looper looper; + @Nullable private Timeline timeline; + + public BaseMediaSource() { + mediaSourceCallers = new ArrayList<>(/* initialCapacity= */ 1); + enabledMediaSourceCallers = new HashSet<>(/* initialCapacity= */ 1); + eventDispatcher = new MediaSourceEventListener.EventDispatcher(); + } + + /** + * Starts source preparation and enables the source, see {@link #prepareSource(MediaSourceCaller, + * TransferListener)}. This method is called at most once until the next call to {@link + * #releaseSourceInternal()}. + * + * @param mediaTransferListener The transfer listener which should be informed of any media data + * transfers. May be null if no listener is available. Note that this listener should usually + * be only informed of transfers related to the media loads and not of auxiliary loads for + * manifests and other data. + */ + protected abstract void prepareSourceInternal(@Nullable TransferListener mediaTransferListener); + + /** Enables the source, see {@link #enable(MediaSourceCaller)}. */ + protected void enableInternal() {} + + /** Disables the source, see {@link #disable(MediaSourceCaller)}. */ + protected void disableInternal() {} + + /** + * Releases the source, see {@link #releaseSource(MediaSourceCaller)}. This method is called + * exactly once after each call to {@link #prepareSourceInternal(TransferListener)}. + */ + protected abstract void releaseSourceInternal(); + + /** + * Updates timeline and manifest and notifies all listeners of the update. + * + * @param timeline The new {@link Timeline}. + */ + protected final void refreshSourceInfo(Timeline timeline) { + this.timeline = timeline; + for (MediaSourceCaller caller : mediaSourceCallers) { + caller.onSourceInfoRefreshed(/* source= */ this, timeline); + } + } + + /** + * Returns a {@link MediaSourceEventListener.EventDispatcher} which dispatches all events to the + * registered listeners with the specified media period id. + * + * @param mediaPeriodId The {@link MediaPeriodId} to be reported with the events. May be null, if + * the events do not belong to a specific media period. + * @return An event dispatcher with pre-configured media period id. + */ + protected final MediaSourceEventListener.EventDispatcher createEventDispatcher( + @Nullable MediaPeriodId mediaPeriodId) { + return eventDispatcher.withParameters( + /* windowIndex= */ 0, mediaPeriodId, /* mediaTimeOffsetMs= */ 0); + } + + /** + * Returns a {@link MediaSourceEventListener.EventDispatcher} which dispatches all events to the + * registered listeners with the specified media period id and time offset. + * + * @param mediaPeriodId The {@link MediaPeriodId} to be reported with the events. + * @param mediaTimeOffsetMs The offset to be added to all media times, in milliseconds. + * @return An event dispatcher with pre-configured media period id and time offset. + */ + protected final MediaSourceEventListener.EventDispatcher createEventDispatcher( + MediaPeriodId mediaPeriodId, long mediaTimeOffsetMs) { + Assertions.checkArgument(mediaPeriodId != null); + return eventDispatcher.withParameters(/* windowIndex= */ 0, mediaPeriodId, mediaTimeOffsetMs); + } + + /** + * Returns a {@link MediaSourceEventListener.EventDispatcher} which dispatches all events to the + * registered listeners with the specified window index, media period id and time offset. + * + * @param windowIndex The timeline window index to be reported with the events. + * @param mediaPeriodId The {@link MediaPeriodId} to be reported with the events. May be null, if + * the events do not belong to a specific media period. + * @param mediaTimeOffsetMs The offset to be added to all media times, in milliseconds. + * @return An event dispatcher with pre-configured media period id and time offset. + */ + protected final MediaSourceEventListener.EventDispatcher createEventDispatcher( + int windowIndex, @Nullable MediaPeriodId mediaPeriodId, long mediaTimeOffsetMs) { + return eventDispatcher.withParameters(windowIndex, mediaPeriodId, mediaTimeOffsetMs); + } + + /** Returns whether the source is enabled. */ + protected final boolean isEnabled() { + return !enabledMediaSourceCallers.isEmpty(); + } + + @Override + public final void addEventListener(Handler handler, MediaSourceEventListener eventListener) { + eventDispatcher.addEventListener(handler, eventListener); + } + + @Override + public final void removeEventListener(MediaSourceEventListener eventListener) { + eventDispatcher.removeEventListener(eventListener); + } + + @Override + public final void prepareSource( + MediaSourceCaller caller, @Nullable TransferListener mediaTransferListener) { + Looper looper = Looper.myLooper(); + Assertions.checkArgument(this.looper == null || this.looper == looper); + Timeline timeline = this.timeline; + mediaSourceCallers.add(caller); + if (this.looper == null) { + this.looper = looper; + enabledMediaSourceCallers.add(caller); + prepareSourceInternal(mediaTransferListener); + } else if (timeline != null) { + enable(caller); + caller.onSourceInfoRefreshed(/* source= */ this, timeline); + } + } + + @Override + public final void enable(MediaSourceCaller caller) { + Assertions.checkNotNull(looper); + boolean wasDisabled = enabledMediaSourceCallers.isEmpty(); + enabledMediaSourceCallers.add(caller); + if (wasDisabled) { + enableInternal(); + } + } + + @Override + public final void disable(MediaSourceCaller caller) { + boolean wasEnabled = !enabledMediaSourceCallers.isEmpty(); + enabledMediaSourceCallers.remove(caller); + if (wasEnabled && enabledMediaSourceCallers.isEmpty()) { + disableInternal(); + } + } + + @Override + public final void releaseSource(MediaSourceCaller caller) { + mediaSourceCallers.remove(caller); + if (mediaSourceCallers.isEmpty()) { + looper = null; + timeline = null; + enabledMediaSourceCallers.clear(); + releaseSourceInternal(); + } else { + disable(caller); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/BehindLiveWindowException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/BehindLiveWindowException.java new file mode 100644 index 0000000000..d5eeeb89a6 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/BehindLiveWindowException.java @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import java.io.IOException; + +/** + * Thrown when a live playback falls behind the available media window. + */ +public final class BehindLiveWindowException extends IOException { + + public BehindLiveWindowException() { + super(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ClippingMediaPeriod.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ClippingMediaPeriod.java new file mode 100644 index 0000000000..7467d946cc --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ClippingMediaPeriod.java @@ -0,0 +1,345 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * Wraps a {@link MediaPeriod} and clips its {@link SampleStream}s to provide a subsequence of their + * samples. + */ +public final class ClippingMediaPeriod implements MediaPeriod, MediaPeriod.Callback { + + /** + * The {@link MediaPeriod} wrapped by this clipping media period. + */ + public final MediaPeriod mediaPeriod; + + @Nullable private MediaPeriod.Callback callback; + private @NullableType ClippingSampleStream[] sampleStreams; + private long pendingInitialDiscontinuityPositionUs; + /* package */ long startUs; + /* package */ long endUs; + + /** + * Creates a new clipping media period that provides a clipped view of the specified {@link + * MediaPeriod}'s sample streams. + * + *

If the start point is guaranteed to be a key frame, pass {@code false} to {@code + * enableInitialPositionDiscontinuity} to suppress an initial discontinuity when the period is + * first read from. + * + * @param mediaPeriod The media period to clip. + * @param enableInitialDiscontinuity Whether the initial discontinuity should be enabled. + * @param startUs The clipping start time, in microseconds. + * @param endUs The clipping end time, in microseconds, or {@link C#TIME_END_OF_SOURCE} to + * indicate the end of the period. + */ + public ClippingMediaPeriod( + MediaPeriod mediaPeriod, boolean enableInitialDiscontinuity, long startUs, long endUs) { + this.mediaPeriod = mediaPeriod; + sampleStreams = new ClippingSampleStream[0]; + pendingInitialDiscontinuityPositionUs = enableInitialDiscontinuity ? startUs : C.TIME_UNSET; + this.startUs = startUs; + this.endUs = endUs; + } + + /** + * Updates the clipping start/end times for this period, in microseconds. + * + * @param startUs The clipping start time, in microseconds. + * @param endUs The clipping end time, in microseconds, or {@link C#TIME_END_OF_SOURCE} to + * indicate the end of the period. + */ + public void updateClipping(long startUs, long endUs) { + this.startUs = startUs; + this.endUs = endUs; + } + + @Override + public void prepare(MediaPeriod.Callback callback, long positionUs) { + this.callback = callback; + mediaPeriod.prepare(this, positionUs); + } + + @Override + public void maybeThrowPrepareError() throws IOException { + mediaPeriod.maybeThrowPrepareError(); + } + + @Override + public TrackGroupArray getTrackGroups() { + return mediaPeriod.getTrackGroups(); + } + + @Override + public long selectTracks( + @NullableType TrackSelection[] selections, + boolean[] mayRetainStreamFlags, + @NullableType SampleStream[] streams, + boolean[] streamResetFlags, + long positionUs) { + sampleStreams = new ClippingSampleStream[streams.length]; + @NullableType SampleStream[] childStreams = new SampleStream[streams.length]; + for (int i = 0; i < streams.length; i++) { + sampleStreams[i] = (ClippingSampleStream) streams[i]; + childStreams[i] = sampleStreams[i] != null ? sampleStreams[i].childStream : null; + } + long enablePositionUs = + mediaPeriod.selectTracks( + selections, mayRetainStreamFlags, childStreams, streamResetFlags, positionUs); + pendingInitialDiscontinuityPositionUs = + isPendingInitialDiscontinuity() + && positionUs == startUs + && shouldKeepInitialDiscontinuity(startUs, selections) + ? enablePositionUs + : C.TIME_UNSET; + Assertions.checkState( + enablePositionUs == positionUs + || (enablePositionUs >= startUs + && (endUs == C.TIME_END_OF_SOURCE || enablePositionUs <= endUs))); + for (int i = 0; i < streams.length; i++) { + if (childStreams[i] == null) { + sampleStreams[i] = null; + } else if (sampleStreams[i] == null || sampleStreams[i].childStream != childStreams[i]) { + sampleStreams[i] = new ClippingSampleStream(childStreams[i]); + } + streams[i] = sampleStreams[i]; + } + return enablePositionUs; + } + + @Override + public void discardBuffer(long positionUs, boolean toKeyframe) { + mediaPeriod.discardBuffer(positionUs, toKeyframe); + } + + @Override + public void reevaluateBuffer(long positionUs) { + mediaPeriod.reevaluateBuffer(positionUs); + } + + @Override + public long readDiscontinuity() { + if (isPendingInitialDiscontinuity()) { + long initialDiscontinuityUs = pendingInitialDiscontinuityPositionUs; + pendingInitialDiscontinuityPositionUs = C.TIME_UNSET; + // Always read an initial discontinuity from the child, and use it if set. + long childDiscontinuityUs = readDiscontinuity(); + return childDiscontinuityUs != C.TIME_UNSET ? childDiscontinuityUs : initialDiscontinuityUs; + } + long discontinuityUs = mediaPeriod.readDiscontinuity(); + if (discontinuityUs == C.TIME_UNSET) { + return C.TIME_UNSET; + } + Assertions.checkState(discontinuityUs >= startUs); + Assertions.checkState(endUs == C.TIME_END_OF_SOURCE || discontinuityUs <= endUs); + return discontinuityUs; + } + + @Override + public long getBufferedPositionUs() { + long bufferedPositionUs = mediaPeriod.getBufferedPositionUs(); + if (bufferedPositionUs == C.TIME_END_OF_SOURCE + || (endUs != C.TIME_END_OF_SOURCE && bufferedPositionUs >= endUs)) { + return C.TIME_END_OF_SOURCE; + } + return bufferedPositionUs; + } + + @Override + public long seekToUs(long positionUs) { + pendingInitialDiscontinuityPositionUs = C.TIME_UNSET; + for (ClippingSampleStream sampleStream : sampleStreams) { + if (sampleStream != null) { + sampleStream.clearSentEos(); + } + } + long seekUs = mediaPeriod.seekToUs(positionUs); + Assertions.checkState( + seekUs == positionUs + || (seekUs >= startUs && (endUs == C.TIME_END_OF_SOURCE || seekUs <= endUs))); + return seekUs; + } + + @Override + public long getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters) { + if (positionUs == startUs) { + // Never adjust seeks to the start of the clipped view. + return startUs; + } + SeekParameters clippedSeekParameters = clipSeekParameters(positionUs, seekParameters); + return mediaPeriod.getAdjustedSeekPositionUs(positionUs, clippedSeekParameters); + } + + @Override + public long getNextLoadPositionUs() { + long nextLoadPositionUs = mediaPeriod.getNextLoadPositionUs(); + if (nextLoadPositionUs == C.TIME_END_OF_SOURCE + || (endUs != C.TIME_END_OF_SOURCE && nextLoadPositionUs >= endUs)) { + return C.TIME_END_OF_SOURCE; + } + return nextLoadPositionUs; + } + + @Override + public boolean continueLoading(long positionUs) { + return mediaPeriod.continueLoading(positionUs); + } + + @Override + public boolean isLoading() { + return mediaPeriod.isLoading(); + } + + // MediaPeriod.Callback implementation. + + @Override + public void onPrepared(MediaPeriod mediaPeriod) { + Assertions.checkNotNull(callback).onPrepared(this); + } + + @Override + public void onContinueLoadingRequested(MediaPeriod source) { + Assertions.checkNotNull(callback).onContinueLoadingRequested(this); + } + + /* package */ boolean isPendingInitialDiscontinuity() { + return pendingInitialDiscontinuityPositionUs != C.TIME_UNSET; + } + + private SeekParameters clipSeekParameters(long positionUs, SeekParameters seekParameters) { + long toleranceBeforeUs = + Util.constrainValue( + seekParameters.toleranceBeforeUs, /* min= */ 0, /* max= */ positionUs - startUs); + long toleranceAfterUs = + Util.constrainValue( + seekParameters.toleranceAfterUs, + /* min= */ 0, + /* max= */ endUs == C.TIME_END_OF_SOURCE ? Long.MAX_VALUE : endUs - positionUs); + if (toleranceBeforeUs == seekParameters.toleranceBeforeUs + && toleranceAfterUs == seekParameters.toleranceAfterUs) { + return seekParameters; + } else { + return new SeekParameters(toleranceBeforeUs, toleranceAfterUs); + } + } + + private static boolean shouldKeepInitialDiscontinuity( + long startUs, @NullableType TrackSelection[] selections) { + // If the clipping start position is non-zero, the clipping sample streams will adjust + // timestamps on buffers they read from the unclipped sample streams. These adjusted buffer + // timestamps can be negative, because sample streams provide buffers starting at a key-frame, + // which may be before the clipping start point. When the renderer reads a buffer with a + // negative timestamp, its offset timestamp can jump backwards compared to the last timestamp + // read in the previous period. Renderer implementations may not allow this, so we signal a + // discontinuity which resets the renderers before they read the clipping sample stream. + // However, for audio-only track selections we assume to have random access seek behaviour and + // do not need an initial discontinuity to reset the renderer. + if (startUs != 0) { + for (TrackSelection trackSelection : selections) { + if (trackSelection != null) { + Format selectedFormat = trackSelection.getSelectedFormat(); + if (!MimeTypes.isAudio(selectedFormat.sampleMimeType)) { + return true; + } + } + } + } + return false; + } + + /** + * Wraps a {@link SampleStream} and clips its samples. + */ + private final class ClippingSampleStream implements SampleStream { + + public final SampleStream childStream; + + private boolean sentEos; + + public ClippingSampleStream(SampleStream childStream) { + this.childStream = childStream; + } + + public void clearSentEos() { + sentEos = false; + } + + @Override + public boolean isReady() { + return !isPendingInitialDiscontinuity() && childStream.isReady(); + } + + @Override + public void maybeThrowError() throws IOException { + childStream.maybeThrowError(); + } + + @Override + public int readData(FormatHolder formatHolder, DecoderInputBuffer buffer, + boolean requireFormat) { + if (isPendingInitialDiscontinuity()) { + return C.RESULT_NOTHING_READ; + } + if (sentEos) { + buffer.setFlags(C.BUFFER_FLAG_END_OF_STREAM); + return C.RESULT_BUFFER_READ; + } + int result = childStream.readData(formatHolder, buffer, requireFormat); + if (result == C.RESULT_FORMAT_READ) { + Format format = Assertions.checkNotNull(formatHolder.format); + if (format.encoderDelay != 0 || format.encoderPadding != 0) { + // Clear gapless playback metadata if the start/end points don't match the media. + int encoderDelay = startUs != 0 ? 0 : format.encoderDelay; + int encoderPadding = endUs != C.TIME_END_OF_SOURCE ? 0 : format.encoderPadding; + formatHolder.format = format.copyWithGaplessInfo(encoderDelay, encoderPadding); + } + return C.RESULT_FORMAT_READ; + } + if (endUs != C.TIME_END_OF_SOURCE + && ((result == C.RESULT_BUFFER_READ && buffer.timeUs >= endUs) + || (result == C.RESULT_NOTHING_READ + && getBufferedPositionUs() == C.TIME_END_OF_SOURCE + && !buffer.waitingForKeys))) { + buffer.clear(); + buffer.setFlags(C.BUFFER_FLAG_END_OF_STREAM); + sentEos = true; + return C.RESULT_BUFFER_READ; + } + return result; + } + + @Override + public int skipData(long positionUs) { + if (isPendingInitialDiscontinuity()) { + return C.RESULT_NOTHING_READ; + } + return childStream.skipData(positionUs); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ClippingMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ClippingMediaSource.java new file mode 100644 index 0000000000..373076957d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ClippingMediaSource.java @@ -0,0 +1,375 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.ArrayList; + +/** + * {@link MediaSource} that wraps a source and clips its timeline based on specified start/end + * positions. The wrapped source must consist of a single period. + */ +public final class ClippingMediaSource extends CompositeMediaSource { + + /** Thrown when a {@link ClippingMediaSource} cannot clip its wrapped source. */ + public static final class IllegalClippingException extends IOException { + + /** + * The reason clipping failed. One of {@link #REASON_INVALID_PERIOD_COUNT}, {@link + * #REASON_NOT_SEEKABLE_TO_START} or {@link #REASON_START_EXCEEDS_END}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({REASON_INVALID_PERIOD_COUNT, REASON_NOT_SEEKABLE_TO_START, REASON_START_EXCEEDS_END}) + public @interface Reason {} + /** The wrapped source doesn't consist of a single period. */ + public static final int REASON_INVALID_PERIOD_COUNT = 0; + /** The wrapped source is not seekable and a non-zero clipping start position was specified. */ + public static final int REASON_NOT_SEEKABLE_TO_START = 1; + /** The wrapped source ends before the specified clipping start position. */ + public static final int REASON_START_EXCEEDS_END = 2; + + /** The reason clipping failed. */ + public final @Reason int reason; + + /** + * @param reason The reason clipping failed. + */ + public IllegalClippingException(@Reason int reason) { + super("Illegal clipping: " + getReasonDescription(reason)); + this.reason = reason; + } + + private static String getReasonDescription(@Reason int reason) { + switch (reason) { + case REASON_INVALID_PERIOD_COUNT: + return "invalid period count"; + case REASON_NOT_SEEKABLE_TO_START: + return "not seekable to start"; + case REASON_START_EXCEEDS_END: + return "start exceeds end"; + default: + return "unknown"; + } + } + } + + private final MediaSource mediaSource; + private final long startUs; + private final long endUs; + private final boolean enableInitialDiscontinuity; + private final boolean allowDynamicClippingUpdates; + private final boolean relativeToDefaultPosition; + private final ArrayList mediaPeriods; + private final Timeline.Window window; + + @Nullable private ClippingTimeline clippingTimeline; + @Nullable private IllegalClippingException clippingError; + private long periodStartUs; + private long periodEndUs; + + /** + * Creates a new clipping source that wraps the specified source and provides samples between the + * specified start and end position. + * + * @param mediaSource The single-period source to wrap. + * @param startPositionUs The start position within {@code mediaSource}'s window at which to start + * providing samples, in microseconds. + * @param endPositionUs The end position within {@code mediaSource}'s window at which to stop + * providing samples, in microseconds. Specify {@link C#TIME_END_OF_SOURCE} to provide samples + * from the specified start point up to the end of the source. Specifying a position that + * exceeds the {@code mediaSource}'s duration will also result in the end of the source not + * being clipped. + */ + public ClippingMediaSource(MediaSource mediaSource, long startPositionUs, long endPositionUs) { + this( + mediaSource, + startPositionUs, + endPositionUs, + /* enableInitialDiscontinuity= */ true, + /* allowDynamicClippingUpdates= */ false, + /* relativeToDefaultPosition= */ false); + } + + /** + * Creates a new clipping source that wraps the specified source and provides samples from the + * default position for the specified duration. + * + * @param mediaSource The single-period source to wrap. + * @param durationUs The duration from the default position in the window in {@code mediaSource}'s + * timeline at which to stop providing samples. Specifying a duration that exceeds the {@code + * mediaSource}'s duration will result in the end of the source not being clipped. + */ + public ClippingMediaSource(MediaSource mediaSource, long durationUs) { + this( + mediaSource, + /* startPositionUs= */ 0, + /* endPositionUs= */ durationUs, + /* enableInitialDiscontinuity= */ true, + /* allowDynamicClippingUpdates= */ false, + /* relativeToDefaultPosition= */ true); + } + + /** + * Creates a new clipping source that wraps the specified source. + * + *

If the start point is guaranteed to be a key frame, pass {@code false} to {@code + * enableInitialPositionDiscontinuity} to suppress an initial discontinuity when a period is first + * read from. + * + *

For live streams, if the clipping positions should move with the live window, pass {@code + * true} to {@code allowDynamicClippingUpdates}. Otherwise, the live stream ends when the playback + * reaches {@code endPositionUs} in the last reported live window at the time a media period was + * created. + * + * @param mediaSource The single-period source to wrap. + * @param startPositionUs The start position at which to start providing samples, in microseconds. + * If {@code relativeToDefaultPosition} is {@code false}, this position is relative to the + * start of the window in {@code mediaSource}'s timeline. If {@code relativeToDefaultPosition} + * is {@code true}, this position is relative to the default position in the window in {@code + * mediaSource}'s timeline. + * @param endPositionUs The end position at which to stop providing samples, in microseconds. + * Specify {@link C#TIME_END_OF_SOURCE} to provide samples from the specified start point up + * to the end of the source. Specifying a position that exceeds the {@code mediaSource}'s + * duration will also result in the end of the source not being clipped. If {@code + * relativeToDefaultPosition} is {@code false}, the specified position is relative to the + * start of the window in {@code mediaSource}'s timeline. If {@code relativeToDefaultPosition} + * is {@code true}, this position is relative to the default position in the window in {@code + * mediaSource}'s timeline. + * @param enableInitialDiscontinuity Whether the initial discontinuity should be enabled. + * @param allowDynamicClippingUpdates Whether the clipping of active media periods moves with a + * live window. If {@code false}, playback ends when it reaches {@code endPositionUs} in the + * last reported live window at the time a media period was created. + * @param relativeToDefaultPosition Whether {@code startPositionUs} and {@code endPositionUs} are + * relative to the default position in the window in {@code mediaSource}'s timeline. + */ + public ClippingMediaSource( + MediaSource mediaSource, + long startPositionUs, + long endPositionUs, + boolean enableInitialDiscontinuity, + boolean allowDynamicClippingUpdates, + boolean relativeToDefaultPosition) { + Assertions.checkArgument(startPositionUs >= 0); + this.mediaSource = Assertions.checkNotNull(mediaSource); + startUs = startPositionUs; + endUs = endPositionUs; + this.enableInitialDiscontinuity = enableInitialDiscontinuity; + this.allowDynamicClippingUpdates = allowDynamicClippingUpdates; + this.relativeToDefaultPosition = relativeToDefaultPosition; + mediaPeriods = new ArrayList<>(); + window = new Timeline.Window(); + } + + @Override + @Nullable + public Object getTag() { + return mediaSource.getTag(); + } + + @Override + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + super.prepareSourceInternal(mediaTransferListener); + prepareChildSource(/* id= */ null, mediaSource); + } + + @Override + public void maybeThrowSourceInfoRefreshError() throws IOException { + if (clippingError != null) { + throw clippingError; + } + super.maybeThrowSourceInfoRefreshError(); + } + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + ClippingMediaPeriod mediaPeriod = + new ClippingMediaPeriod( + mediaSource.createPeriod(id, allocator, startPositionUs), + enableInitialDiscontinuity, + periodStartUs, + periodEndUs); + mediaPeriods.add(mediaPeriod); + return mediaPeriod; + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + Assertions.checkState(mediaPeriods.remove(mediaPeriod)); + mediaSource.releasePeriod(((ClippingMediaPeriod) mediaPeriod).mediaPeriod); + if (mediaPeriods.isEmpty() && !allowDynamicClippingUpdates) { + refreshClippedTimeline(Assertions.checkNotNull(clippingTimeline).timeline); + } + } + + @Override + protected void releaseSourceInternal() { + super.releaseSourceInternal(); + clippingError = null; + clippingTimeline = null; + } + + @Override + protected void onChildSourceInfoRefreshed(Void id, MediaSource mediaSource, Timeline timeline) { + if (clippingError != null) { + return; + } + refreshClippedTimeline(timeline); + } + + private void refreshClippedTimeline(Timeline timeline) { + long windowStartUs; + long windowEndUs; + timeline.getWindow(/* windowIndex= */ 0, window); + long windowPositionInPeriodUs = window.getPositionInFirstPeriodUs(); + if (clippingTimeline == null || mediaPeriods.isEmpty() || allowDynamicClippingUpdates) { + windowStartUs = startUs; + windowEndUs = endUs; + if (relativeToDefaultPosition) { + long windowDefaultPositionUs = window.getDefaultPositionUs(); + windowStartUs += windowDefaultPositionUs; + windowEndUs += windowDefaultPositionUs; + } + periodStartUs = windowPositionInPeriodUs + windowStartUs; + periodEndUs = + endUs == C.TIME_END_OF_SOURCE + ? C.TIME_END_OF_SOURCE + : windowPositionInPeriodUs + windowEndUs; + int count = mediaPeriods.size(); + for (int i = 0; i < count; i++) { + mediaPeriods.get(i).updateClipping(periodStartUs, periodEndUs); + } + } else { + // Keep window fixed at previous period position. + windowStartUs = periodStartUs - windowPositionInPeriodUs; + windowEndUs = + endUs == C.TIME_END_OF_SOURCE + ? C.TIME_END_OF_SOURCE + : periodEndUs - windowPositionInPeriodUs; + } + try { + clippingTimeline = new ClippingTimeline(timeline, windowStartUs, windowEndUs); + } catch (IllegalClippingException e) { + clippingError = e; + return; + } + refreshSourceInfo(clippingTimeline); + } + + @Override + protected long getMediaTimeForChildMediaTime(Void id, long mediaTimeMs) { + if (mediaTimeMs == C.TIME_UNSET) { + return C.TIME_UNSET; + } + long startMs = C.usToMs(startUs); + long clippedTimeMs = Math.max(0, mediaTimeMs - startMs); + if (endUs != C.TIME_END_OF_SOURCE) { + clippedTimeMs = Math.min(C.usToMs(endUs) - startMs, clippedTimeMs); + } + return clippedTimeMs; + } + + /** + * Provides a clipped view of a specified timeline. + */ + private static final class ClippingTimeline extends ForwardingTimeline { + + private final long startUs; + private final long endUs; + private final long durationUs; + private final boolean isDynamic; + + /** + * Creates a new clipping timeline that wraps the specified timeline. + * + * @param timeline The timeline to clip. + * @param startUs The number of microseconds to clip from the start of {@code timeline}. + * @param endUs The end position in microseconds for the clipped timeline relative to the start + * of {@code timeline}, or {@link C#TIME_END_OF_SOURCE} to clip no samples from the end. + * @throws IllegalClippingException If the timeline could not be clipped. + */ + public ClippingTimeline(Timeline timeline, long startUs, long endUs) + throws IllegalClippingException { + super(timeline); + if (timeline.getPeriodCount() != 1) { + throw new IllegalClippingException(IllegalClippingException.REASON_INVALID_PERIOD_COUNT); + } + Window window = timeline.getWindow(0, new Window()); + startUs = Math.max(0, startUs); + long resolvedEndUs = endUs == C.TIME_END_OF_SOURCE ? window.durationUs : Math.max(0, endUs); + if (window.durationUs != C.TIME_UNSET) { + if (resolvedEndUs > window.durationUs) { + resolvedEndUs = window.durationUs; + } + if (startUs != 0 && !window.isSeekable) { + throw new IllegalClippingException(IllegalClippingException.REASON_NOT_SEEKABLE_TO_START); + } + if (startUs > resolvedEndUs) { + throw new IllegalClippingException(IllegalClippingException.REASON_START_EXCEEDS_END); + } + } + this.startUs = startUs; + this.endUs = resolvedEndUs; + durationUs = resolvedEndUs == C.TIME_UNSET ? C.TIME_UNSET : (resolvedEndUs - startUs); + isDynamic = + window.isDynamic + && (resolvedEndUs == C.TIME_UNSET + || (window.durationUs != C.TIME_UNSET && resolvedEndUs == window.durationUs)); + } + + @Override + public Window getWindow(int windowIndex, Window window, long defaultPositionProjectionUs) { + timeline.getWindow(/* windowIndex= */ 0, window, /* defaultPositionProjectionUs= */ 0); + window.positionInFirstPeriodUs += startUs; + window.durationUs = durationUs; + window.isDynamic = isDynamic; + if (window.defaultPositionUs != C.TIME_UNSET) { + window.defaultPositionUs = Math.max(window.defaultPositionUs, startUs); + window.defaultPositionUs = endUs == C.TIME_UNSET ? window.defaultPositionUs + : Math.min(window.defaultPositionUs, endUs); + window.defaultPositionUs -= startUs; + } + long startMs = C.usToMs(startUs); + if (window.presentationStartTimeMs != C.TIME_UNSET) { + window.presentationStartTimeMs += startMs; + } + if (window.windowStartTimeMs != C.TIME_UNSET) { + window.windowStartTimeMs += startMs; + } + return window; + } + + @Override + public Period getPeriod(int periodIndex, Period period, boolean setIds) { + timeline.getPeriod(/* periodIndex= */ 0, period, setIds); + long positionInClippedWindowUs = period.getPositionInWindowUs() - startUs; + long periodDurationUs = + durationUs == C.TIME_UNSET ? C.TIME_UNSET : durationUs - positionInClippedWindowUs; + return period.set( + period.id, period.uid, /* windowIndex= */ 0, periodDurationUs, positionInClippedWindowUs); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeMediaSource.java new file mode 100644 index 0000000000..ed46b8ee94 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeMediaSource.java @@ -0,0 +1,354 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.os.Handler; +import androidx.annotation.CallSuper; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.HashMap; + +/** + * Composite {@link MediaSource} consisting of multiple child sources. + * + * @param The type of the id used to identify prepared child sources. + */ +public abstract class CompositeMediaSource extends BaseMediaSource { + + private final HashMap childSources; + + @Nullable private Handler eventHandler; + @Nullable private TransferListener mediaTransferListener; + + /** Creates composite media source without child sources. */ + protected CompositeMediaSource() { + childSources = new HashMap<>(); + } + + @Override + @CallSuper + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + this.mediaTransferListener = mediaTransferListener; + eventHandler = new Handler(); + } + + @Override + @CallSuper + public void maybeThrowSourceInfoRefreshError() throws IOException { + for (MediaSourceAndListener childSource : childSources.values()) { + childSource.mediaSource.maybeThrowSourceInfoRefreshError(); + } + } + + @Override + @CallSuper + protected void enableInternal() { + for (MediaSourceAndListener childSource : childSources.values()) { + childSource.mediaSource.enable(childSource.caller); + } + } + + @Override + @CallSuper + protected void disableInternal() { + for (MediaSourceAndListener childSource : childSources.values()) { + childSource.mediaSource.disable(childSource.caller); + } + } + + @Override + @CallSuper + protected void releaseSourceInternal() { + for (MediaSourceAndListener childSource : childSources.values()) { + childSource.mediaSource.releaseSource(childSource.caller); + childSource.mediaSource.removeEventListener(childSource.eventListener); + } + childSources.clear(); + } + + /** + * Called when the source info of a child source has been refreshed. + * + * @param id The unique id used to prepare the child source. + * @param mediaSource The child source whose source info has been refreshed. + * @param timeline The timeline of the child source. + */ + protected abstract void onChildSourceInfoRefreshed( + T id, MediaSource mediaSource, Timeline timeline); + + /** + * Prepares a child source. + * + *

{@link #onChildSourceInfoRefreshed(Object, MediaSource, Timeline)} will be called when the + * child source updates its timeline with the same {@code id} passed to this method. + * + *

Any child sources that aren't explicitly released with {@link #releaseChildSource(Object)} + * will be released in {@link #releaseSourceInternal()}. + * + * @param id A unique id to identify the child source preparation. Null is allowed as an id. + * @param mediaSource The child {@link MediaSource}. + */ + protected final void prepareChildSource(final T id, MediaSource mediaSource) { + Assertions.checkArgument(!childSources.containsKey(id)); + MediaSourceCaller caller = + (source, timeline) -> onChildSourceInfoRefreshed(id, source, timeline); + MediaSourceEventListener eventListener = new ForwardingEventListener(id); + childSources.put(id, new MediaSourceAndListener(mediaSource, caller, eventListener)); + mediaSource.addEventListener(Assertions.checkNotNull(eventHandler), eventListener); + mediaSource.prepareSource(caller, mediaTransferListener); + if (!isEnabled()) { + mediaSource.disable(caller); + } + } + + /** + * Enables a child source. + * + * @param id The unique id used to prepare the child source. + */ + protected final void enableChildSource(final T id) { + MediaSourceAndListener enabledChild = Assertions.checkNotNull(childSources.get(id)); + enabledChild.mediaSource.enable(enabledChild.caller); + } + + /** + * Disables a child source. + * + * @param id The unique id used to prepare the child source. + */ + protected final void disableChildSource(final T id) { + MediaSourceAndListener disabledChild = Assertions.checkNotNull(childSources.get(id)); + disabledChild.mediaSource.disable(disabledChild.caller); + } + + /** + * Releases a child source. + * + * @param id The unique id used to prepare the child source. + */ + protected final void releaseChildSource(T id) { + MediaSourceAndListener removedChild = Assertions.checkNotNull(childSources.remove(id)); + removedChild.mediaSource.releaseSource(removedChild.caller); + removedChild.mediaSource.removeEventListener(removedChild.eventListener); + } + + /** + * Returns the window index in the composite source corresponding to the specified window index in + * a child source. The default implementation does not change the window index. + * + * @param id The unique id used to prepare the child source. + * @param windowIndex A window index of the child source. + * @return The corresponding window index in the composite source. + */ + protected int getWindowIndexForChildWindowIndex(T id, int windowIndex) { + return windowIndex; + } + + /** + * Returns the {@link MediaPeriodId} in the composite source corresponding to the specified {@link + * MediaPeriodId} in a child source. The default implementation does not change the media period + * id. + * + * @param id The unique id used to prepare the child source. + * @param mediaPeriodId A {@link MediaPeriodId} of the child source. + * @return The corresponding {@link MediaPeriodId} in the composite source. Null if no + * corresponding media period id can be determined. + */ + protected @Nullable MediaPeriodId getMediaPeriodIdForChildMediaPeriodId( + T id, MediaPeriodId mediaPeriodId) { + return mediaPeriodId; + } + + /** + * Returns the media time in the composite source corresponding to the specified media time in a + * child source. The default implementation does not change the media time. + * + * @param id The unique id used to prepare the child source. + * @param mediaTimeMs A media time of the child source, in milliseconds. + * @return The corresponding media time in the composite source, in milliseconds. + */ + protected long getMediaTimeForChildMediaTime(@Nullable T id, long mediaTimeMs) { + return mediaTimeMs; + } + + /** + * Returns whether {@link MediaSourceEventListener#onMediaPeriodCreated(int, MediaPeriodId)} and + * {@link MediaSourceEventListener#onMediaPeriodReleased(int, MediaPeriodId)} events of the given + * media period should be reported. The default implementation is to always report these events. + * + * @param mediaPeriodId A {@link MediaPeriodId} in the composite media source. + * @return Whether create and release events for this media period should be reported. + */ + protected boolean shouldDispatchCreateOrReleaseEvent(MediaPeriodId mediaPeriodId) { + return true; + } + + private static final class MediaSourceAndListener { + + public final MediaSource mediaSource; + public final MediaSourceCaller caller; + public final MediaSourceEventListener eventListener; + + public MediaSourceAndListener( + MediaSource mediaSource, MediaSourceCaller caller, MediaSourceEventListener eventListener) { + this.mediaSource = mediaSource; + this.caller = caller; + this.eventListener = eventListener; + } + } + + private final class ForwardingEventListener implements MediaSourceEventListener { + + private final T id; + private EventDispatcher eventDispatcher; + + public ForwardingEventListener(T id) { + this.eventDispatcher = createEventDispatcher(/* mediaPeriodId= */ null); + this.id = id; + } + + @Override + public void onMediaPeriodCreated(int windowIndex, MediaPeriodId mediaPeriodId) { + if (maybeUpdateEventDispatcher(windowIndex, mediaPeriodId)) { + if (shouldDispatchCreateOrReleaseEvent( + Assertions.checkNotNull(eventDispatcher.mediaPeriodId))) { + eventDispatcher.mediaPeriodCreated(); + } + } + } + + @Override + public void onMediaPeriodReleased(int windowIndex, MediaPeriodId mediaPeriodId) { + if (maybeUpdateEventDispatcher(windowIndex, mediaPeriodId)) { + if (shouldDispatchCreateOrReleaseEvent( + Assertions.checkNotNull(eventDispatcher.mediaPeriodId))) { + eventDispatcher.mediaPeriodReleased(); + } + } + } + + @Override + public void onLoadStarted( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventData, + MediaLoadData mediaLoadData) { + if (maybeUpdateEventDispatcher(windowIndex, mediaPeriodId)) { + eventDispatcher.loadStarted(loadEventData, maybeUpdateMediaLoadData(mediaLoadData)); + } + } + + @Override + public void onLoadCompleted( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventData, + MediaLoadData mediaLoadData) { + if (maybeUpdateEventDispatcher(windowIndex, mediaPeriodId)) { + eventDispatcher.loadCompleted(loadEventData, maybeUpdateMediaLoadData(mediaLoadData)); + } + } + + @Override + public void onLoadCanceled( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventData, + MediaLoadData mediaLoadData) { + if (maybeUpdateEventDispatcher(windowIndex, mediaPeriodId)) { + eventDispatcher.loadCanceled(loadEventData, maybeUpdateMediaLoadData(mediaLoadData)); + } + } + + @Override + public void onLoadError( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventData, + MediaLoadData mediaLoadData, + IOException error, + boolean wasCanceled) { + if (maybeUpdateEventDispatcher(windowIndex, mediaPeriodId)) { + eventDispatcher.loadError( + loadEventData, maybeUpdateMediaLoadData(mediaLoadData), error, wasCanceled); + } + } + + @Override + public void onReadingStarted(int windowIndex, MediaPeriodId mediaPeriodId) { + if (maybeUpdateEventDispatcher(windowIndex, mediaPeriodId)) { + eventDispatcher.readingStarted(); + } + } + + @Override + public void onUpstreamDiscarded( + int windowIndex, @Nullable MediaPeriodId mediaPeriodId, MediaLoadData mediaLoadData) { + if (maybeUpdateEventDispatcher(windowIndex, mediaPeriodId)) { + eventDispatcher.upstreamDiscarded(maybeUpdateMediaLoadData(mediaLoadData)); + } + } + + @Override + public void onDownstreamFormatChanged( + int windowIndex, @Nullable MediaPeriodId mediaPeriodId, MediaLoadData mediaLoadData) { + if (maybeUpdateEventDispatcher(windowIndex, mediaPeriodId)) { + eventDispatcher.downstreamFormatChanged(maybeUpdateMediaLoadData(mediaLoadData)); + } + } + + /** Updates the event dispatcher and returns whether the event should be dispatched. */ + private boolean maybeUpdateEventDispatcher( + int childWindowIndex, @Nullable MediaPeriodId childMediaPeriodId) { + MediaPeriodId mediaPeriodId = null; + if (childMediaPeriodId != null) { + mediaPeriodId = getMediaPeriodIdForChildMediaPeriodId(id, childMediaPeriodId); + if (mediaPeriodId == null) { + // Media period not found. Ignore event. + return false; + } + } + int windowIndex = getWindowIndexForChildWindowIndex(id, childWindowIndex); + if (eventDispatcher.windowIndex != windowIndex + || !Util.areEqual(eventDispatcher.mediaPeriodId, mediaPeriodId)) { + eventDispatcher = + createEventDispatcher(windowIndex, mediaPeriodId, /* mediaTimeOffsetMs= */ 0); + } + return true; + } + + private MediaLoadData maybeUpdateMediaLoadData(MediaLoadData mediaLoadData) { + long mediaStartTimeMs = getMediaTimeForChildMediaTime(id, mediaLoadData.mediaStartTimeMs); + long mediaEndTimeMs = getMediaTimeForChildMediaTime(id, mediaLoadData.mediaEndTimeMs); + if (mediaStartTimeMs == mediaLoadData.mediaStartTimeMs + && mediaEndTimeMs == mediaLoadData.mediaEndTimeMs) { + return mediaLoadData; + } + return new MediaLoadData( + mediaLoadData.dataType, + mediaLoadData.trackType, + mediaLoadData.trackFormat, + mediaLoadData.trackSelectionReason, + mediaLoadData.trackSelectionData, + mediaStartTimeMs, + mediaEndTimeMs); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoader.java new file mode 100644 index 0000000000..9a72903528 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoader.java @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; + +/** + * A {@link SequenceableLoader} that encapsulates multiple other {@link SequenceableLoader}s. + */ +public class CompositeSequenceableLoader implements SequenceableLoader { + + protected final SequenceableLoader[] loaders; + + public CompositeSequenceableLoader(SequenceableLoader[] loaders) { + this.loaders = loaders; + } + + @Override + public final long getBufferedPositionUs() { + long bufferedPositionUs = Long.MAX_VALUE; + for (SequenceableLoader loader : loaders) { + long loaderBufferedPositionUs = loader.getBufferedPositionUs(); + if (loaderBufferedPositionUs != C.TIME_END_OF_SOURCE) { + bufferedPositionUs = Math.min(bufferedPositionUs, loaderBufferedPositionUs); + } + } + return bufferedPositionUs == Long.MAX_VALUE ? C.TIME_END_OF_SOURCE : bufferedPositionUs; + } + + @Override + public final long getNextLoadPositionUs() { + long nextLoadPositionUs = Long.MAX_VALUE; + for (SequenceableLoader loader : loaders) { + long loaderNextLoadPositionUs = loader.getNextLoadPositionUs(); + if (loaderNextLoadPositionUs != C.TIME_END_OF_SOURCE) { + nextLoadPositionUs = Math.min(nextLoadPositionUs, loaderNextLoadPositionUs); + } + } + return nextLoadPositionUs == Long.MAX_VALUE ? C.TIME_END_OF_SOURCE : nextLoadPositionUs; + } + + @Override + public final void reevaluateBuffer(long positionUs) { + for (SequenceableLoader loader : loaders) { + loader.reevaluateBuffer(positionUs); + } + } + + @Override + public boolean continueLoading(long positionUs) { + boolean madeProgress = false; + boolean madeProgressThisIteration; + do { + madeProgressThisIteration = false; + long nextLoadPositionUs = getNextLoadPositionUs(); + if (nextLoadPositionUs == C.TIME_END_OF_SOURCE) { + break; + } + for (SequenceableLoader loader : loaders) { + long loaderNextLoadPositionUs = loader.getNextLoadPositionUs(); + boolean isLoaderBehind = + loaderNextLoadPositionUs != C.TIME_END_OF_SOURCE + && loaderNextLoadPositionUs <= positionUs; + if (loaderNextLoadPositionUs == nextLoadPositionUs || isLoaderBehind) { + madeProgressThisIteration |= loader.continueLoading(positionUs); + } + } + madeProgress |= madeProgressThisIteration; + } while (madeProgressThisIteration); + return madeProgress; + } + + @Override + public boolean isLoading() { + for (SequenceableLoader loader : loaders) { + if (loader.isLoading()) { + return true; + } + } + return false; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoaderFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoaderFactory.java new file mode 100644 index 0000000000..1ac76d6167 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/CompositeSequenceableLoaderFactory.java @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +/** + * A factory to create composite {@link SequenceableLoader}s. + */ +public interface CompositeSequenceableLoaderFactory { + + /** + * Creates a composite {@link SequenceableLoader}. + * + * @param loaders The sub-loaders that make up the {@link SequenceableLoader} to be built. + * @return A composite {@link SequenceableLoader} that comprises the given loaders. + */ + SequenceableLoader createCompositeSequenceableLoader(SequenceableLoader... loaders); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ConcatenatingMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ConcatenatingMediaSource.java new file mode 100644 index 0000000000..aa6f486473 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ConcatenatingMediaSource.java @@ -0,0 +1,1017 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.os.Handler; +import android.os.Message; +import androidx.annotation.GuardedBy; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ConcatenatingMediaSource.MediaSourceHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ShuffleOrder.DefaultShuffleOrder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.IdentityHashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Set; + +/** + * Concatenates multiple {@link MediaSource}s. The list of {@link MediaSource}s can be modified + * during playback. It is valid for the same {@link MediaSource} instance to be present more than + * once in the concatenation. Access to this class is thread-safe. + */ +public final class ConcatenatingMediaSource extends CompositeMediaSource { + + private static final int MSG_ADD = 0; + private static final int MSG_REMOVE = 1; + private static final int MSG_MOVE = 2; + private static final int MSG_SET_SHUFFLE_ORDER = 3; + private static final int MSG_UPDATE_TIMELINE = 4; + private static final int MSG_ON_COMPLETION = 5; + + // Accessed on any thread. + @GuardedBy("this") + private final List mediaSourcesPublic; + + @GuardedBy("this") + private final Set pendingOnCompletionActions; + + @GuardedBy("this") + @Nullable + private Handler playbackThreadHandler; + + // Accessed on the playback thread only. + private final List mediaSourceHolders; + private final Map mediaSourceByMediaPeriod; + private final Map mediaSourceByUid; + private final Set enabledMediaSourceHolders; + private final boolean isAtomic; + private final boolean useLazyPreparation; + + private boolean timelineUpdateScheduled; + private Set nextTimelineUpdateOnCompletionActions; + private ShuffleOrder shuffleOrder; + + /** + * @param mediaSources The {@link MediaSource}s to concatenate. It is valid for the same + * {@link MediaSource} instance to be present more than once in the array. + */ + public ConcatenatingMediaSource(MediaSource... mediaSources) { + this(/* isAtomic= */ false, mediaSources); + } + + /** + * @param isAtomic Whether the concatenating media source will be treated as atomic, i.e., treated + * as a single item for repeating and shuffling. + * @param mediaSources The {@link MediaSource}s to concatenate. It is valid for the same {@link + * MediaSource} instance to be present more than once in the array. + */ + public ConcatenatingMediaSource(boolean isAtomic, MediaSource... mediaSources) { + this(isAtomic, new DefaultShuffleOrder(0), mediaSources); + } + + /** + * @param isAtomic Whether the concatenating media source will be treated as atomic, i.e., treated + * as a single item for repeating and shuffling. + * @param shuffleOrder The {@link ShuffleOrder} to use when shuffling the child media sources. + * @param mediaSources The {@link MediaSource}s to concatenate. It is valid for the same {@link + * MediaSource} instance to be present more than once in the array. + */ + public ConcatenatingMediaSource( + boolean isAtomic, ShuffleOrder shuffleOrder, MediaSource... mediaSources) { + this(isAtomic, /* useLazyPreparation= */ false, shuffleOrder, mediaSources); + } + + /** + * @param isAtomic Whether the concatenating media source will be treated as atomic, i.e., treated + * as a single item for repeating and shuffling. + * @param useLazyPreparation Whether playlist items are prepared lazily. If false, all manifest + * loads and other initial preparation steps happen immediately. If true, these initial + * preparations are triggered only when the player starts buffering the media. + * @param shuffleOrder The {@link ShuffleOrder} to use when shuffling the child media sources. + * @param mediaSources The {@link MediaSource}s to concatenate. It is valid for the same {@link + * MediaSource} instance to be present more than once in the array. + */ + @SuppressWarnings("initialization") + public ConcatenatingMediaSource( + boolean isAtomic, + boolean useLazyPreparation, + ShuffleOrder shuffleOrder, + MediaSource... mediaSources) { + for (MediaSource mediaSource : mediaSources) { + Assertions.checkNotNull(mediaSource); + } + this.shuffleOrder = shuffleOrder.getLength() > 0 ? shuffleOrder.cloneAndClear() : shuffleOrder; + this.mediaSourceByMediaPeriod = new IdentityHashMap<>(); + this.mediaSourceByUid = new HashMap<>(); + this.mediaSourcesPublic = new ArrayList<>(); + this.mediaSourceHolders = new ArrayList<>(); + this.nextTimelineUpdateOnCompletionActions = new HashSet<>(); + this.pendingOnCompletionActions = new HashSet<>(); + this.enabledMediaSourceHolders = new HashSet<>(); + this.isAtomic = isAtomic; + this.useLazyPreparation = useLazyPreparation; + addMediaSources(Arrays.asList(mediaSources)); + } + + /** + * Appends a {@link MediaSource} to the playlist. + * + * @param mediaSource The {@link MediaSource} to be added to the list. + */ + public synchronized void addMediaSource(MediaSource mediaSource) { + addMediaSource(mediaSourcesPublic.size(), mediaSource); + } + + /** + * Appends a {@link MediaSource} to the playlist and executes a custom action on completion. + * + * @param mediaSource The {@link MediaSource} to be added to the list. + * @param handler The {@link Handler} to run {@code onCompletionAction}. + * @param onCompletionAction A {@link Runnable} which is executed immediately after the media + * source has been added to the playlist. + */ + public synchronized void addMediaSource( + MediaSource mediaSource, Handler handler, Runnable onCompletionAction) { + addMediaSource(mediaSourcesPublic.size(), mediaSource, handler, onCompletionAction); + } + + /** + * Adds a {@link MediaSource} to the playlist. + * + * @param index The index at which the new {@link MediaSource} will be inserted. This index must + * be in the range of 0 <= index <= {@link #getSize()}. + * @param mediaSource The {@link MediaSource} to be added to the list. + */ + public synchronized void addMediaSource(int index, MediaSource mediaSource) { + addPublicMediaSources( + index, + Collections.singletonList(mediaSource), + /* handler= */ null, + /* onCompletionAction= */ null); + } + + /** + * Adds a {@link MediaSource} to the playlist and executes a custom action on completion. + * + * @param index The index at which the new {@link MediaSource} will be inserted. This index must + * be in the range of 0 <= index <= {@link #getSize()}. + * @param mediaSource The {@link MediaSource} to be added to the list. + * @param handler The {@link Handler} to run {@code onCompletionAction}. + * @param onCompletionAction A {@link Runnable} which is executed immediately after the media + * source has been added to the playlist. + */ + public synchronized void addMediaSource( + int index, MediaSource mediaSource, Handler handler, Runnable onCompletionAction) { + addPublicMediaSources( + index, Collections.singletonList(mediaSource), handler, onCompletionAction); + } + + /** + * Appends multiple {@link MediaSource}s to the playlist. + * + * @param mediaSources A collection of {@link MediaSource}s to be added to the list. The media + * sources are added in the order in which they appear in this collection. + */ + public synchronized void addMediaSources(Collection mediaSources) { + addPublicMediaSources( + mediaSourcesPublic.size(), + mediaSources, + /* handler= */ null, + /* onCompletionAction= */ null); + } + + /** + * Appends multiple {@link MediaSource}s to the playlist and executes a custom action on + * completion. + * + * @param mediaSources A collection of {@link MediaSource}s to be added to the list. The media + * sources are added in the order in which they appear in this collection. + * @param handler The {@link Handler} to run {@code onCompletionAction}. + * @param onCompletionAction A {@link Runnable} which is executed immediately after the media + * sources have been added to the playlist. + */ + public synchronized void addMediaSources( + Collection mediaSources, Handler handler, Runnable onCompletionAction) { + addPublicMediaSources(mediaSourcesPublic.size(), mediaSources, handler, onCompletionAction); + } + + /** + * Adds multiple {@link MediaSource}s to the playlist. + * + * @param index The index at which the new {@link MediaSource}s will be inserted. This index must + * be in the range of 0 <= index <= {@link #getSize()}. + * @param mediaSources A collection of {@link MediaSource}s to be added to the list. The media + * sources are added in the order in which they appear in this collection. + */ + public synchronized void addMediaSources(int index, Collection mediaSources) { + addPublicMediaSources(index, mediaSources, /* handler= */ null, /* onCompletionAction= */ null); + } + + /** + * Adds multiple {@link MediaSource}s to the playlist and executes a custom action on completion. + * + * @param index The index at which the new {@link MediaSource}s will be inserted. This index must + * be in the range of 0 <= index <= {@link #getSize()}. + * @param mediaSources A collection of {@link MediaSource}s to be added to the list. The media + * sources are added in the order in which they appear in this collection. + * @param handler The {@link Handler} to run {@code onCompletionAction}. + * @param onCompletionAction A {@link Runnable} which is executed immediately after the media + * sources have been added to the playlist. + */ + public synchronized void addMediaSources( + int index, + Collection mediaSources, + Handler handler, + Runnable onCompletionAction) { + addPublicMediaSources(index, mediaSources, handler, onCompletionAction); + } + + /** + * Removes a {@link MediaSource} from the playlist. + * + *

Note: If you want to move the instance, it's preferable to use {@link #moveMediaSource(int, + * int)} instead. + * + *

Note: If you want to remove a set of contiguous sources, it's preferable to use {@link + * #removeMediaSourceRange(int, int)} instead. + * + * @param index The index at which the media source will be removed. This index must be in the + * range of 0 <= index < {@link #getSize()}. + * @return The removed {@link MediaSource}. + */ + public synchronized MediaSource removeMediaSource(int index) { + MediaSource removedMediaSource = getMediaSource(index); + removePublicMediaSources(index, index + 1, /* handler= */ null, /* onCompletionAction= */ null); + return removedMediaSource; + } + + /** + * Removes a {@link MediaSource} from the playlist and executes a custom action on completion. + * + *

Note: If you want to move the instance, it's preferable to use {@link #moveMediaSource(int, + * int, Handler, Runnable)} instead. + * + *

Note: If you want to remove a set of contiguous sources, it's preferable to use {@link + * #removeMediaSourceRange(int, int, Handler, Runnable)} instead. + * + * @param index The index at which the media source will be removed. This index must be in the + * range of 0 <= index < {@link #getSize()}. + * @param handler The {@link Handler} to run {@code onCompletionAction}. + * @param onCompletionAction A {@link Runnable} which is executed immediately after the media + * source has been removed from the playlist. + * @return The removed {@link MediaSource}. + */ + public synchronized MediaSource removeMediaSource( + int index, Handler handler, Runnable onCompletionAction) { + MediaSource removedMediaSource = getMediaSource(index); + removePublicMediaSources(index, index + 1, handler, onCompletionAction); + return removedMediaSource; + } + + /** + * Removes a range of {@link MediaSource}s from the playlist, by specifying an initial index + * (included) and a final index (excluded). + * + *

Note: when specified range is empty, no actual media source is removed and no exception is + * thrown. + * + * @param fromIndex The initial range index, pointing to the first media source that will be + * removed. This index must be in the range of 0 <= index <= {@link #getSize()}. + * @param toIndex The final range index, pointing to the first media source that will be left + * untouched. This index must be in the range of 0 <= index <= {@link #getSize()}. + * @throws IndexOutOfBoundsException When the range is malformed, i.e. {@code fromIndex} < 0, + * {@code toIndex} > {@link #getSize()}, {@code fromIndex} > {@code toIndex} + */ + public synchronized void removeMediaSourceRange(int fromIndex, int toIndex) { + removePublicMediaSources( + fromIndex, toIndex, /* handler= */ null, /* onCompletionAction= */ null); + } + + /** + * Removes a range of {@link MediaSource}s from the playlist, by specifying an initial index + * (included) and a final index (excluded), and executes a custom action on completion. + * + *

Note: when specified range is empty, no actual media source is removed and no exception is + * thrown. + * + * @param fromIndex The initial range index, pointing to the first media source that will be + * removed. This index must be in the range of 0 <= index <= {@link #getSize()}. + * @param toIndex The final range index, pointing to the first media source that will be left + * untouched. This index must be in the range of 0 <= index <= {@link #getSize()}. + * @param handler The {@link Handler} to run {@code onCompletionAction}. + * @param onCompletionAction A {@link Runnable} which is executed immediately after the media + * source range has been removed from the playlist. + * @throws IllegalArgumentException When the range is malformed, i.e. {@code fromIndex} < 0, + * {@code toIndex} > {@link #getSize()}, {@code fromIndex} > {@code toIndex} + */ + public synchronized void removeMediaSourceRange( + int fromIndex, int toIndex, Handler handler, Runnable onCompletionAction) { + removePublicMediaSources(fromIndex, toIndex, handler, onCompletionAction); + } + + /** + * Moves an existing {@link MediaSource} within the playlist. + * + * @param currentIndex The current index of the media source in the playlist. This index must be + * in the range of 0 <= index < {@link #getSize()}. + * @param newIndex The target index of the media source in the playlist. This index must be in the + * range of 0 <= index < {@link #getSize()}. + */ + public synchronized void moveMediaSource(int currentIndex, int newIndex) { + movePublicMediaSource( + currentIndex, newIndex, /* handler= */ null, /* onCompletionAction= */ null); + } + + /** + * Moves an existing {@link MediaSource} within the playlist and executes a custom action on + * completion. + * + * @param currentIndex The current index of the media source in the playlist. This index must be + * in the range of 0 <= index < {@link #getSize()}. + * @param newIndex The target index of the media source in the playlist. This index must be in the + * range of 0 <= index < {@link #getSize()}. + * @param handler The {@link Handler} to run {@code onCompletionAction}. + * @param onCompletionAction A {@link Runnable} which is executed immediately after the media + * source has been moved. + */ + public synchronized void moveMediaSource( + int currentIndex, int newIndex, Handler handler, Runnable onCompletionAction) { + movePublicMediaSource(currentIndex, newIndex, handler, onCompletionAction); + } + + /** Clears the playlist. */ + public synchronized void clear() { + removeMediaSourceRange(0, getSize()); + } + + /** + * Clears the playlist and executes a custom action on completion. + * + * @param handler The {@link Handler} to run {@code onCompletionAction}. + * @param onCompletionAction A {@link Runnable} which is executed immediately after the playlist + * has been cleared. + */ + public synchronized void clear(Handler handler, Runnable onCompletionAction) { + removeMediaSourceRange(0, getSize(), handler, onCompletionAction); + } + + /** Returns the number of media sources in the playlist. */ + public synchronized int getSize() { + return mediaSourcesPublic.size(); + } + + /** + * Returns the {@link MediaSource} at a specified index. + * + * @param index An index in the range of 0 <= index <= {@link #getSize()}. + * @return The {@link MediaSource} at this index. + */ + public synchronized MediaSource getMediaSource(int index) { + return mediaSourcesPublic.get(index).mediaSource; + } + + /** + * Sets a new shuffle order to use when shuffling the child media sources. + * + * @param shuffleOrder A {@link ShuffleOrder}. + */ + public synchronized void setShuffleOrder(ShuffleOrder shuffleOrder) { + setPublicShuffleOrder(shuffleOrder, /* handler= */ null, /* onCompletionAction= */ null); + } + + /** + * Sets a new shuffle order to use when shuffling the child media sources. + * + * @param shuffleOrder A {@link ShuffleOrder}. + * @param handler The {@link Handler} to run {@code onCompletionAction}. + * @param onCompletionAction A {@link Runnable} which is executed immediately after the shuffle + * order has been changed. + */ + public synchronized void setShuffleOrder( + ShuffleOrder shuffleOrder, Handler handler, Runnable onCompletionAction) { + setPublicShuffleOrder(shuffleOrder, handler, onCompletionAction); + } + + // CompositeMediaSource implementation. + + @Override + @Nullable + public Object getTag() { + return null; + } + + @Override + protected synchronized void prepareSourceInternal( + @Nullable TransferListener mediaTransferListener) { + super.prepareSourceInternal(mediaTransferListener); + playbackThreadHandler = new Handler(/* callback= */ this::handleMessage); + if (mediaSourcesPublic.isEmpty()) { + updateTimelineAndScheduleOnCompletionActions(); + } else { + shuffleOrder = shuffleOrder.cloneAndInsert(0, mediaSourcesPublic.size()); + addMediaSourcesInternal(0, mediaSourcesPublic); + scheduleTimelineUpdate(); + } + } + + @SuppressWarnings("MissingSuperCall") + @Override + protected void enableInternal() { + // Suppress enabling all child sources here as they can be lazily enabled when creating periods. + } + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + Object mediaSourceHolderUid = getMediaSourceHolderUid(id.periodUid); + MediaPeriodId childMediaPeriodId = id.copyWithPeriodUid(getChildPeriodUid(id.periodUid)); + MediaSourceHolder holder = mediaSourceByUid.get(mediaSourceHolderUid); + if (holder == null) { + // Stale event. The media source has already been removed. + holder = new MediaSourceHolder(new DummyMediaSource(), useLazyPreparation); + holder.isRemoved = true; + prepareChildSource(holder, holder.mediaSource); + } + enableMediaSource(holder); + holder.activeMediaPeriodIds.add(childMediaPeriodId); + MediaPeriod mediaPeriod = + holder.mediaSource.createPeriod(childMediaPeriodId, allocator, startPositionUs); + mediaSourceByMediaPeriod.put(mediaPeriod, holder); + disableUnusedMediaSources(); + return mediaPeriod; + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + MediaSourceHolder holder = + Assertions.checkNotNull(mediaSourceByMediaPeriod.remove(mediaPeriod)); + holder.mediaSource.releasePeriod(mediaPeriod); + holder.activeMediaPeriodIds.remove(((MaskingMediaPeriod) mediaPeriod).id); + if (!mediaSourceByMediaPeriod.isEmpty()) { + disableUnusedMediaSources(); + } + maybeReleaseChildSource(holder); + } + + @Override + protected void disableInternal() { + super.disableInternal(); + enabledMediaSourceHolders.clear(); + } + + @Override + protected synchronized void releaseSourceInternal() { + super.releaseSourceInternal(); + mediaSourceHolders.clear(); + enabledMediaSourceHolders.clear(); + mediaSourceByUid.clear(); + shuffleOrder = shuffleOrder.cloneAndClear(); + if (playbackThreadHandler != null) { + playbackThreadHandler.removeCallbacksAndMessages(null); + playbackThreadHandler = null; + } + timelineUpdateScheduled = false; + nextTimelineUpdateOnCompletionActions.clear(); + dispatchOnCompletionActions(pendingOnCompletionActions); + } + + @Override + protected void onChildSourceInfoRefreshed( + MediaSourceHolder mediaSourceHolder, MediaSource mediaSource, Timeline timeline) { + updateMediaSourceInternal(mediaSourceHolder, timeline); + } + + @Override + @Nullable + protected MediaPeriodId getMediaPeriodIdForChildMediaPeriodId( + MediaSourceHolder mediaSourceHolder, MediaPeriodId mediaPeriodId) { + for (int i = 0; i < mediaSourceHolder.activeMediaPeriodIds.size(); i++) { + // Ensure the reported media period id has the same window sequence number as the one created + // by this media source. Otherwise it does not belong to this child source. + if (mediaSourceHolder.activeMediaPeriodIds.get(i).windowSequenceNumber + == mediaPeriodId.windowSequenceNumber) { + Object periodUid = getPeriodUid(mediaSourceHolder, mediaPeriodId.periodUid); + return mediaPeriodId.copyWithPeriodUid(periodUid); + } + } + return null; + } + + @Override + protected int getWindowIndexForChildWindowIndex( + MediaSourceHolder mediaSourceHolder, int windowIndex) { + return windowIndex + mediaSourceHolder.firstWindowIndexInChild; + } + + // Internal methods. Called from any thread. + + @GuardedBy("this") + private void addPublicMediaSources( + int index, + Collection mediaSources, + @Nullable Handler handler, + @Nullable Runnable onCompletionAction) { + Assertions.checkArgument((handler == null) == (onCompletionAction == null)); + Handler playbackThreadHandler = this.playbackThreadHandler; + for (MediaSource mediaSource : mediaSources) { + Assertions.checkNotNull(mediaSource); + } + List mediaSourceHolders = new ArrayList<>(mediaSources.size()); + for (MediaSource mediaSource : mediaSources) { + mediaSourceHolders.add(new MediaSourceHolder(mediaSource, useLazyPreparation)); + } + mediaSourcesPublic.addAll(index, mediaSourceHolders); + if (playbackThreadHandler != null && !mediaSources.isEmpty()) { + HandlerAndRunnable callbackAction = createOnCompletionAction(handler, onCompletionAction); + playbackThreadHandler + .obtainMessage(MSG_ADD, new MessageData<>(index, mediaSourceHolders, callbackAction)) + .sendToTarget(); + } else if (onCompletionAction != null && handler != null) { + handler.post(onCompletionAction); + } + } + + @GuardedBy("this") + private void removePublicMediaSources( + int fromIndex, + int toIndex, + @Nullable Handler handler, + @Nullable Runnable onCompletionAction) { + Assertions.checkArgument((handler == null) == (onCompletionAction == null)); + Handler playbackThreadHandler = this.playbackThreadHandler; + Util.removeRange(mediaSourcesPublic, fromIndex, toIndex); + if (playbackThreadHandler != null) { + HandlerAndRunnable callbackAction = createOnCompletionAction(handler, onCompletionAction); + playbackThreadHandler + .obtainMessage(MSG_REMOVE, new MessageData<>(fromIndex, toIndex, callbackAction)) + .sendToTarget(); + } else if (onCompletionAction != null && handler != null) { + handler.post(onCompletionAction); + } + } + + @GuardedBy("this") + private void movePublicMediaSource( + int currentIndex, + int newIndex, + @Nullable Handler handler, + @Nullable Runnable onCompletionAction) { + Assertions.checkArgument((handler == null) == (onCompletionAction == null)); + Handler playbackThreadHandler = this.playbackThreadHandler; + mediaSourcesPublic.add(newIndex, mediaSourcesPublic.remove(currentIndex)); + if (playbackThreadHandler != null) { + HandlerAndRunnable callbackAction = createOnCompletionAction(handler, onCompletionAction); + playbackThreadHandler + .obtainMessage(MSG_MOVE, new MessageData<>(currentIndex, newIndex, callbackAction)) + .sendToTarget(); + } else if (onCompletionAction != null && handler != null) { + handler.post(onCompletionAction); + } + } + + @GuardedBy("this") + private void setPublicShuffleOrder( + ShuffleOrder shuffleOrder, @Nullable Handler handler, @Nullable Runnable onCompletionAction) { + Assertions.checkArgument((handler == null) == (onCompletionAction == null)); + Handler playbackThreadHandler = this.playbackThreadHandler; + if (playbackThreadHandler != null) { + int size = getSize(); + if (shuffleOrder.getLength() != size) { + shuffleOrder = + shuffleOrder + .cloneAndClear() + .cloneAndInsert(/* insertionIndex= */ 0, /* insertionCount= */ size); + } + HandlerAndRunnable callbackAction = createOnCompletionAction(handler, onCompletionAction); + playbackThreadHandler + .obtainMessage( + MSG_SET_SHUFFLE_ORDER, + new MessageData<>(/* index= */ 0, shuffleOrder, callbackAction)) + .sendToTarget(); + } else { + this.shuffleOrder = + shuffleOrder.getLength() > 0 ? shuffleOrder.cloneAndClear() : shuffleOrder; + if (onCompletionAction != null && handler != null) { + handler.post(onCompletionAction); + } + } + } + + @GuardedBy("this") + @Nullable + private HandlerAndRunnable createOnCompletionAction( + @Nullable Handler handler, @Nullable Runnable runnable) { + if (handler == null || runnable == null) { + return null; + } + HandlerAndRunnable handlerAndRunnable = new HandlerAndRunnable(handler, runnable); + pendingOnCompletionActions.add(handlerAndRunnable); + return handlerAndRunnable; + } + + // Internal methods. Called on the playback thread. + + @SuppressWarnings("unchecked") + private boolean handleMessage(Message msg) { + switch (msg.what) { + case MSG_ADD: + MessageData> addMessage = + (MessageData>) Util.castNonNull(msg.obj); + shuffleOrder = shuffleOrder.cloneAndInsert(addMessage.index, addMessage.customData.size()); + addMediaSourcesInternal(addMessage.index, addMessage.customData); + scheduleTimelineUpdate(addMessage.onCompletionAction); + break; + case MSG_REMOVE: + MessageData removeMessage = (MessageData) Util.castNonNull(msg.obj); + int fromIndex = removeMessage.index; + int toIndex = removeMessage.customData; + if (fromIndex == 0 && toIndex == shuffleOrder.getLength()) { + shuffleOrder = shuffleOrder.cloneAndClear(); + } else { + shuffleOrder = shuffleOrder.cloneAndRemove(fromIndex, toIndex); + } + for (int index = toIndex - 1; index >= fromIndex; index--) { + removeMediaSourceInternal(index); + } + scheduleTimelineUpdate(removeMessage.onCompletionAction); + break; + case MSG_MOVE: + MessageData moveMessage = (MessageData) Util.castNonNull(msg.obj); + shuffleOrder = shuffleOrder.cloneAndRemove(moveMessage.index, moveMessage.index + 1); + shuffleOrder = shuffleOrder.cloneAndInsert(moveMessage.customData, 1); + moveMediaSourceInternal(moveMessage.index, moveMessage.customData); + scheduleTimelineUpdate(moveMessage.onCompletionAction); + break; + case MSG_SET_SHUFFLE_ORDER: + MessageData shuffleOrderMessage = + (MessageData) Util.castNonNull(msg.obj); + shuffleOrder = shuffleOrderMessage.customData; + scheduleTimelineUpdate(shuffleOrderMessage.onCompletionAction); + break; + case MSG_UPDATE_TIMELINE: + updateTimelineAndScheduleOnCompletionActions(); + break; + case MSG_ON_COMPLETION: + Set actions = (Set) Util.castNonNull(msg.obj); + dispatchOnCompletionActions(actions); + break; + default: + throw new IllegalStateException(); + } + return true; + } + + private void scheduleTimelineUpdate() { + scheduleTimelineUpdate(/* onCompletionAction= */ null); + } + + private void scheduleTimelineUpdate(@Nullable HandlerAndRunnable onCompletionAction) { + if (!timelineUpdateScheduled) { + getPlaybackThreadHandlerOnPlaybackThread().obtainMessage(MSG_UPDATE_TIMELINE).sendToTarget(); + timelineUpdateScheduled = true; + } + if (onCompletionAction != null) { + nextTimelineUpdateOnCompletionActions.add(onCompletionAction); + } + } + + private void updateTimelineAndScheduleOnCompletionActions() { + timelineUpdateScheduled = false; + Set onCompletionActions = nextTimelineUpdateOnCompletionActions; + nextTimelineUpdateOnCompletionActions = new HashSet<>(); + refreshSourceInfo(new ConcatenatedTimeline(mediaSourceHolders, shuffleOrder, isAtomic)); + getPlaybackThreadHandlerOnPlaybackThread() + .obtainMessage(MSG_ON_COMPLETION, onCompletionActions) + .sendToTarget(); + } + + @SuppressWarnings("GuardedBy") + private Handler getPlaybackThreadHandlerOnPlaybackThread() { + // Write access to this value happens on the playback thread only, so playback thread reads + // don't need to be synchronized. + return Assertions.checkNotNull(playbackThreadHandler); + } + + private synchronized void dispatchOnCompletionActions( + Set onCompletionActions) { + for (HandlerAndRunnable pendingAction : onCompletionActions) { + pendingAction.dispatch(); + } + pendingOnCompletionActions.removeAll(onCompletionActions); + } + + private void addMediaSourcesInternal( + int index, Collection mediaSourceHolders) { + for (MediaSourceHolder mediaSourceHolder : mediaSourceHolders) { + addMediaSourceInternal(index++, mediaSourceHolder); + } + } + + private void addMediaSourceInternal(int newIndex, MediaSourceHolder newMediaSourceHolder) { + if (newIndex > 0) { + MediaSourceHolder previousHolder = mediaSourceHolders.get(newIndex - 1); + Timeline previousTimeline = previousHolder.mediaSource.getTimeline(); + newMediaSourceHolder.reset( + newIndex, previousHolder.firstWindowIndexInChild + previousTimeline.getWindowCount()); + } else { + newMediaSourceHolder.reset(newIndex, /* firstWindowIndexInChild= */ 0); + } + Timeline newTimeline = newMediaSourceHolder.mediaSource.getTimeline(); + correctOffsets(newIndex, /* childIndexUpdate= */ 1, newTimeline.getWindowCount()); + mediaSourceHolders.add(newIndex, newMediaSourceHolder); + mediaSourceByUid.put(newMediaSourceHolder.uid, newMediaSourceHolder); + prepareChildSource(newMediaSourceHolder, newMediaSourceHolder.mediaSource); + if (isEnabled() && mediaSourceByMediaPeriod.isEmpty()) { + enabledMediaSourceHolders.add(newMediaSourceHolder); + } else { + disableChildSource(newMediaSourceHolder); + } + } + + private void updateMediaSourceInternal(MediaSourceHolder mediaSourceHolder, Timeline timeline) { + if (mediaSourceHolder == null) { + throw new IllegalArgumentException(); + } + if (mediaSourceHolder.childIndex + 1 < mediaSourceHolders.size()) { + MediaSourceHolder nextHolder = mediaSourceHolders.get(mediaSourceHolder.childIndex + 1); + int windowOffsetUpdate = + timeline.getWindowCount() + - (nextHolder.firstWindowIndexInChild - mediaSourceHolder.firstWindowIndexInChild); + if (windowOffsetUpdate != 0) { + correctOffsets( + mediaSourceHolder.childIndex + 1, /* childIndexUpdate= */ 0, windowOffsetUpdate); + } + } + scheduleTimelineUpdate(); + } + + private void removeMediaSourceInternal(int index) { + MediaSourceHolder holder = mediaSourceHolders.remove(index); + mediaSourceByUid.remove(holder.uid); + Timeline oldTimeline = holder.mediaSource.getTimeline(); + correctOffsets(index, /* childIndexUpdate= */ -1, -oldTimeline.getWindowCount()); + holder.isRemoved = true; + maybeReleaseChildSource(holder); + } + + private void moveMediaSourceInternal(int currentIndex, int newIndex) { + int startIndex = Math.min(currentIndex, newIndex); + int endIndex = Math.max(currentIndex, newIndex); + int windowOffset = mediaSourceHolders.get(startIndex).firstWindowIndexInChild; + mediaSourceHolders.add(newIndex, mediaSourceHolders.remove(currentIndex)); + for (int i = startIndex; i <= endIndex; i++) { + MediaSourceHolder holder = mediaSourceHolders.get(i); + holder.childIndex = i; + holder.firstWindowIndexInChild = windowOffset; + windowOffset += holder.mediaSource.getTimeline().getWindowCount(); + } + } + + private void correctOffsets(int startIndex, int childIndexUpdate, int windowOffsetUpdate) { + // TODO: Replace window index with uid in reporting to get rid of this inefficient method and + // the childIndex and firstWindowIndexInChild variables. + for (int i = startIndex; i < mediaSourceHolders.size(); i++) { + MediaSourceHolder holder = mediaSourceHolders.get(i); + holder.childIndex += childIndexUpdate; + holder.firstWindowIndexInChild += windowOffsetUpdate; + } + } + + private void maybeReleaseChildSource(MediaSourceHolder mediaSourceHolder) { + // Release if the source has been removed from the playlist and no periods are still active. + if (mediaSourceHolder.isRemoved && mediaSourceHolder.activeMediaPeriodIds.isEmpty()) { + enabledMediaSourceHolders.remove(mediaSourceHolder); + releaseChildSource(mediaSourceHolder); + } + } + + private void enableMediaSource(MediaSourceHolder mediaSourceHolder) { + enabledMediaSourceHolders.add(mediaSourceHolder); + enableChildSource(mediaSourceHolder); + } + + private void disableUnusedMediaSources() { + Iterator iterator = enabledMediaSourceHolders.iterator(); + while (iterator.hasNext()) { + MediaSourceHolder holder = iterator.next(); + if (holder.activeMediaPeriodIds.isEmpty()) { + disableChildSource(holder); + iterator.remove(); + } + } + } + + /** Return uid of media source holder from period uid of concatenated source. */ + private static Object getMediaSourceHolderUid(Object periodUid) { + return ConcatenatedTimeline.getChildTimelineUidFromConcatenatedUid(periodUid); + } + + /** Return uid of child period from period uid of concatenated source. */ + private static Object getChildPeriodUid(Object periodUid) { + return ConcatenatedTimeline.getChildPeriodUidFromConcatenatedUid(periodUid); + } + + private static Object getPeriodUid(MediaSourceHolder holder, Object childPeriodUid) { + return ConcatenatedTimeline.getConcatenatedUid(holder.uid, childPeriodUid); + } + + /** Data class to hold playlist media sources together with meta data needed to process them. */ + /* package */ static final class MediaSourceHolder { + + public final MaskingMediaSource mediaSource; + public final Object uid; + public final List activeMediaPeriodIds; + + public int childIndex; + public int firstWindowIndexInChild; + public boolean isRemoved; + + public MediaSourceHolder(MediaSource mediaSource, boolean useLazyPreparation) { + this.mediaSource = new MaskingMediaSource(mediaSource, useLazyPreparation); + this.activeMediaPeriodIds = new ArrayList<>(); + this.uid = new Object(); + } + + public void reset(int childIndex, int firstWindowIndexInChild) { + this.childIndex = childIndex; + this.firstWindowIndexInChild = firstWindowIndexInChild; + this.isRemoved = false; + this.activeMediaPeriodIds.clear(); + } + } + + /** Message used to post actions from app thread to playback thread. */ + private static final class MessageData { + + public final int index; + public final T customData; + @Nullable public final HandlerAndRunnable onCompletionAction; + + public MessageData(int index, T customData, @Nullable HandlerAndRunnable onCompletionAction) { + this.index = index; + this.customData = customData; + this.onCompletionAction = onCompletionAction; + } + } + + /** Timeline exposing concatenated timelines of playlist media sources. */ + private static final class ConcatenatedTimeline extends AbstractConcatenatedTimeline { + + private final int windowCount; + private final int periodCount; + private final int[] firstPeriodInChildIndices; + private final int[] firstWindowInChildIndices; + private final Timeline[] timelines; + private final Object[] uids; + private final HashMap childIndexByUid; + + public ConcatenatedTimeline( + Collection mediaSourceHolders, + ShuffleOrder shuffleOrder, + boolean isAtomic) { + super(isAtomic, shuffleOrder); + int childCount = mediaSourceHolders.size(); + firstPeriodInChildIndices = new int[childCount]; + firstWindowInChildIndices = new int[childCount]; + timelines = new Timeline[childCount]; + uids = new Object[childCount]; + childIndexByUid = new HashMap<>(); + int index = 0; + int windowCount = 0; + int periodCount = 0; + for (MediaSourceHolder mediaSourceHolder : mediaSourceHolders) { + timelines[index] = mediaSourceHolder.mediaSource.getTimeline(); + firstWindowInChildIndices[index] = windowCount; + firstPeriodInChildIndices[index] = periodCount; + windowCount += timelines[index].getWindowCount(); + periodCount += timelines[index].getPeriodCount(); + uids[index] = mediaSourceHolder.uid; + childIndexByUid.put(uids[index], index++); + } + this.windowCount = windowCount; + this.periodCount = periodCount; + } + + @Override + protected int getChildIndexByPeriodIndex(int periodIndex) { + return Util.binarySearchFloor(firstPeriodInChildIndices, periodIndex + 1, false, false); + } + + @Override + protected int getChildIndexByWindowIndex(int windowIndex) { + return Util.binarySearchFloor(firstWindowInChildIndices, windowIndex + 1, false, false); + } + + @Override + protected int getChildIndexByChildUid(Object childUid) { + Integer index = childIndexByUid.get(childUid); + return index == null ? C.INDEX_UNSET : index; + } + + @Override + protected Timeline getTimelineByChildIndex(int childIndex) { + return timelines[childIndex]; + } + + @Override + protected int getFirstPeriodIndexByChildIndex(int childIndex) { + return firstPeriodInChildIndices[childIndex]; + } + + @Override + protected int getFirstWindowIndexByChildIndex(int childIndex) { + return firstWindowInChildIndices[childIndex]; + } + + @Override + protected Object getChildUidByChildIndex(int childIndex) { + return uids[childIndex]; + } + + @Override + public int getWindowCount() { + return windowCount; + } + + @Override + public int getPeriodCount() { + return periodCount; + } + } + + /** Dummy media source which does nothing and does not support creating periods. */ + private static final class DummyMediaSource extends BaseMediaSource { + + @Override + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + // Do nothing. + } + + @Override + @Nullable + public Object getTag() { + return null; + } + + @Override + protected void releaseSourceInternal() { + // Do nothing. + } + + @Override + public void maybeThrowSourceInfoRefreshError() throws IOException { + // Do nothing. + } + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + throw new UnsupportedOperationException(); + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + // Do nothing. + } + } + + private static final class HandlerAndRunnable { + + private final Handler handler; + private final Runnable runnable; + + public HandlerAndRunnable(Handler handler, Runnable runnable) { + this.handler = handler; + this.runnable = runnable; + } + + public void dispatch() { + handler.post(runnable); + } + } +} + diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/DefaultCompositeSequenceableLoaderFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/DefaultCompositeSequenceableLoaderFactory.java new file mode 100644 index 0000000000..237510bea3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/DefaultCompositeSequenceableLoaderFactory.java @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +/** + * Default implementation of {@link CompositeSequenceableLoaderFactory}. + */ +public final class DefaultCompositeSequenceableLoaderFactory + implements CompositeSequenceableLoaderFactory { + + @Override + public SequenceableLoader createCompositeSequenceableLoader(SequenceableLoader... loaders) { + return new CompositeSequenceableLoader(loaders); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/DefaultMediaSourceEventListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/DefaultMediaSourceEventListener.java new file mode 100644 index 0000000000..c25750247f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/DefaultMediaSourceEventListener.java @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +/** + * @deprecated Use {@link MediaSourceEventListener} interface directly for selective overrides as + * all methods are implemented as no-op default methods. + */ +@Deprecated +public abstract class DefaultMediaSourceEventListener implements MediaSourceEventListener {} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/EmptySampleStream.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/EmptySampleStream.java new file mode 100644 index 0000000000..398c6b91fc --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/EmptySampleStream.java @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import java.io.IOException; + +/** + * An empty {@link SampleStream}. + */ +public final class EmptySampleStream implements SampleStream { + + @Override + public boolean isReady() { + return true; + } + + @Override + public void maybeThrowError() throws IOException { + // Do nothing. + } + + @Override + public int readData(FormatHolder formatHolder, DecoderInputBuffer buffer, + boolean formatRequired) { + buffer.setFlags(C.BUFFER_FLAG_END_OF_STREAM); + return C.RESULT_BUFFER_READ; + } + + @Override + public int skipData(long positionUs) { + return 0; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ExtractorMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ExtractorMediaSource.java new file mode 100644 index 0000000000..3b72f51c44 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ExtractorMediaSource.java @@ -0,0 +1,394 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.net.Uri; +import android.os.Handler; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DefaultExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultLoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; + +/** @deprecated Use {@link ProgressiveMediaSource} instead. */ +@Deprecated +@SuppressWarnings("deprecation") +public final class ExtractorMediaSource extends CompositeMediaSource { + + /** @deprecated Use {@link MediaSourceEventListener} instead. */ + @Deprecated + public interface EventListener { + + /** + * Called when an error occurs loading media data. + *

+ * This method being called does not indicate that playback has failed, or that it will fail. + * The player may be able to recover from the error and continue. Hence applications should + * not implement this method to display a user visible error or initiate an application + * level retry ({@link Player.EventListener#onPlayerError} is the appropriate place to implement + * such behavior). This method is called to provide the application with an opportunity to log + * the error if it wishes to do so. + * + * @param error The load error. + */ + void onLoadError(IOException error); + + } + + /** @deprecated Use {@link ProgressiveMediaSource.Factory} instead. */ + @Deprecated + public static final class Factory implements MediaSourceFactory { + + private final DataSource.Factory dataSourceFactory; + + @Nullable private ExtractorsFactory extractorsFactory; + @Nullable private String customCacheKey; + @Nullable private Object tag; + private LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private int continueLoadingCheckIntervalBytes; + private boolean isCreateCalled; + + /** + * Creates a new factory for {@link ExtractorMediaSource}s. + * + * @param dataSourceFactory A factory for {@link DataSource}s to read the media. + */ + public Factory(DataSource.Factory dataSourceFactory) { + this.dataSourceFactory = dataSourceFactory; + loadErrorHandlingPolicy = new DefaultLoadErrorHandlingPolicy(); + continueLoadingCheckIntervalBytes = DEFAULT_LOADING_CHECK_INTERVAL_BYTES; + } + + /** + * Sets the factory for {@link Extractor}s to process the media stream. The default value is an + * instance of {@link DefaultExtractorsFactory}. + * + * @param extractorsFactory A factory for {@link Extractor}s to process the media stream. If the + * possible formats are known, pass a factory that instantiates extractors for those + * formats. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setExtractorsFactory(ExtractorsFactory extractorsFactory) { + Assertions.checkState(!isCreateCalled); + this.extractorsFactory = extractorsFactory; + return this; + } + + /** + * Sets the custom key that uniquely identifies the original stream. Used for cache indexing. + * The default value is {@code null}. + * + * @param customCacheKey A custom key that uniquely identifies the original stream. Used for + * cache indexing. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setCustomCacheKey(String customCacheKey) { + Assertions.checkState(!isCreateCalled); + this.customCacheKey = customCacheKey; + return this; + } + + /** + * Sets a tag for the media source which will be published in the {@link + * com.google.android.exoplayer2.Timeline} of the source as {@link + * com.google.android.exoplayer2.Timeline.Window#tag}. + * + * @param tag A tag for the media source. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setTag(Object tag) { + Assertions.checkState(!isCreateCalled); + this.tag = tag; + return this; + } + + /** + * Sets the minimum number of times to retry if a loading error occurs. See {@link + * #setLoadErrorHandlingPolicy} for the default value. + * + *

Calling this method is equivalent to calling {@link #setLoadErrorHandlingPolicy} with + * {@link DefaultLoadErrorHandlingPolicy#DefaultLoadErrorHandlingPolicy(int) + * DefaultLoadErrorHandlingPolicy(minLoadableRetryCount)} + * + * @param minLoadableRetryCount The minimum number of times to retry if a loading error occurs. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + * @deprecated Use {@link #setLoadErrorHandlingPolicy(LoadErrorHandlingPolicy)} instead. + */ + @Deprecated + public Factory setMinLoadableRetryCount(int minLoadableRetryCount) { + return setLoadErrorHandlingPolicy(new DefaultLoadErrorHandlingPolicy(minLoadableRetryCount)); + } + + /** + * Sets the {@link LoadErrorHandlingPolicy}. The default value is created by calling {@link + * DefaultLoadErrorHandlingPolicy#DefaultLoadErrorHandlingPolicy()}. + * + *

Calling this method overrides any calls to {@link #setMinLoadableRetryCount(int)}. + * + * @param loadErrorHandlingPolicy A {@link LoadErrorHandlingPolicy}. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setLoadErrorHandlingPolicy(LoadErrorHandlingPolicy loadErrorHandlingPolicy) { + Assertions.checkState(!isCreateCalled); + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + return this; + } + + /** + * Sets the number of bytes that should be loaded between each invocation of {@link + * MediaPeriod.Callback#onContinueLoadingRequested(SequenceableLoader)}. The default value is + * {@link #DEFAULT_LOADING_CHECK_INTERVAL_BYTES}. + * + * @param continueLoadingCheckIntervalBytes The number of bytes that should be loaded between + * each invocation of {@link + * MediaPeriod.Callback#onContinueLoadingRequested(SequenceableLoader)}. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setContinueLoadingCheckIntervalBytes(int continueLoadingCheckIntervalBytes) { + Assertions.checkState(!isCreateCalled); + this.continueLoadingCheckIntervalBytes = continueLoadingCheckIntervalBytes; + return this; + } + + /** @deprecated Use {@link ProgressiveMediaSource.Factory#setDrmSessionManager} instead. */ + @Override + @Deprecated + public Factory setDrmSessionManager(DrmSessionManager drmSessionManager) { + throw new UnsupportedOperationException(); + } + + /** + * Returns a new {@link ExtractorMediaSource} using the current parameters. + * + * @param uri The {@link Uri}. + * @return The new {@link ExtractorMediaSource}. + */ + @Override + public ExtractorMediaSource createMediaSource(Uri uri) { + isCreateCalled = true; + if (extractorsFactory == null) { + extractorsFactory = new DefaultExtractorsFactory(); + } + return new ExtractorMediaSource( + uri, + dataSourceFactory, + extractorsFactory, + loadErrorHandlingPolicy, + customCacheKey, + continueLoadingCheckIntervalBytes, + tag); + } + + /** + * @deprecated Use {@link #createMediaSource(Uri)} and {@link #addEventListener(Handler, + * MediaSourceEventListener)} instead. + */ + @Deprecated + public ExtractorMediaSource createMediaSource( + Uri uri, @Nullable Handler eventHandler, @Nullable MediaSourceEventListener eventListener) { + ExtractorMediaSource mediaSource = createMediaSource(uri); + if (eventHandler != null && eventListener != null) { + mediaSource.addEventListener(eventHandler, eventListener); + } + return mediaSource; + } + + @Override + public int[] getSupportedTypes() { + return new int[] {C.TYPE_OTHER}; + } + } + + /** + * @deprecated Use {@link ProgressiveMediaSource#DEFAULT_LOADING_CHECK_INTERVAL_BYTES} instead. + */ + @Deprecated + public static final int DEFAULT_LOADING_CHECK_INTERVAL_BYTES = + ProgressiveMediaSource.DEFAULT_LOADING_CHECK_INTERVAL_BYTES; + + private final ProgressiveMediaSource progressiveMediaSource; + + /** + * @param uri The {@link Uri} of the media stream. + * @param dataSourceFactory A factory for {@link DataSource}s to read the media. + * @param extractorsFactory A factory for {@link Extractor}s to process the media stream. If the + * possible formats are known, pass a factory that instantiates extractors for those formats. + * Otherwise, pass a {@link DefaultExtractorsFactory} to use default extractors. + * @param eventHandler A handler for events. May be null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @deprecated Use {@link Factory} instead. + */ + @Deprecated + public ExtractorMediaSource( + Uri uri, + DataSource.Factory dataSourceFactory, + ExtractorsFactory extractorsFactory, + @Nullable Handler eventHandler, + @Nullable EventListener eventListener) { + this(uri, dataSourceFactory, extractorsFactory, eventHandler, eventListener, null); + } + + /** + * @param uri The {@link Uri} of the media stream. + * @param dataSourceFactory A factory for {@link DataSource}s to read the media. + * @param extractorsFactory A factory for {@link Extractor}s to process the media stream. If the + * possible formats are known, pass a factory that instantiates extractors for those formats. + * Otherwise, pass a {@link DefaultExtractorsFactory} to use default extractors. + * @param eventHandler A handler for events. May be null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param customCacheKey A custom key that uniquely identifies the original stream. Used for cache + * indexing. May be null. + * @deprecated Use {@link Factory} instead. + */ + @Deprecated + public ExtractorMediaSource( + Uri uri, + DataSource.Factory dataSourceFactory, + ExtractorsFactory extractorsFactory, + @Nullable Handler eventHandler, + @Nullable EventListener eventListener, + @Nullable String customCacheKey) { + this( + uri, + dataSourceFactory, + extractorsFactory, + eventHandler, + eventListener, + customCacheKey, + DEFAULT_LOADING_CHECK_INTERVAL_BYTES); + } + + /** + * @param uri The {@link Uri} of the media stream. + * @param dataSourceFactory A factory for {@link DataSource}s to read the media. + * @param extractorsFactory A factory for {@link Extractor}s to process the media stream. If the + * possible formats are known, pass a factory that instantiates extractors for those formats. + * Otherwise, pass a {@link DefaultExtractorsFactory} to use default extractors. + * @param eventHandler A handler for events. May be null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param customCacheKey A custom key that uniquely identifies the original stream. Used for cache + * indexing. May be null. + * @param continueLoadingCheckIntervalBytes The number of bytes that should be loaded between each + * invocation of {@link MediaPeriod.Callback#onContinueLoadingRequested(SequenceableLoader)}. + * @deprecated Use {@link Factory} instead. + */ + @Deprecated + public ExtractorMediaSource( + Uri uri, + DataSource.Factory dataSourceFactory, + ExtractorsFactory extractorsFactory, + @Nullable Handler eventHandler, + @Nullable EventListener eventListener, + @Nullable String customCacheKey, + int continueLoadingCheckIntervalBytes) { + this( + uri, + dataSourceFactory, + extractorsFactory, + new DefaultLoadErrorHandlingPolicy(), + customCacheKey, + continueLoadingCheckIntervalBytes, + /* tag= */ null); + if (eventListener != null && eventHandler != null) { + addEventListener(eventHandler, new EventListenerWrapper(eventListener)); + } + } + + private ExtractorMediaSource( + Uri uri, + DataSource.Factory dataSourceFactory, + ExtractorsFactory extractorsFactory, + LoadErrorHandlingPolicy loadableLoadErrorHandlingPolicy, + @Nullable String customCacheKey, + int continueLoadingCheckIntervalBytes, + @Nullable Object tag) { + progressiveMediaSource = + new ProgressiveMediaSource( + uri, + dataSourceFactory, + extractorsFactory, + DrmSessionManager.getDummyDrmSessionManager(), + loadableLoadErrorHandlingPolicy, + customCacheKey, + continueLoadingCheckIntervalBytes, + tag); + } + + @Override + @Nullable + public Object getTag() { + return progressiveMediaSource.getTag(); + } + + @Override + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + super.prepareSourceInternal(mediaTransferListener); + prepareChildSource(/* id= */ null, progressiveMediaSource); + } + + @Override + protected void onChildSourceInfoRefreshed( + @Nullable Void id, MediaSource mediaSource, Timeline timeline) { + refreshSourceInfo(timeline); + } + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + return progressiveMediaSource.createPeriod(id, allocator, startPositionUs); + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + progressiveMediaSource.releasePeriod(mediaPeriod); + } + + @Deprecated + private static final class EventListenerWrapper implements MediaSourceEventListener { + + private final EventListener eventListener; + + public EventListenerWrapper(EventListener eventListener) { + this.eventListener = Assertions.checkNotNull(eventListener); + } + + @Override + public void onLoadError( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData, + IOException error, + boolean wasCanceled) { + eventListener.onLoadError(error); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ForwardingTimeline.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ForwardingTimeline.java new file mode 100644 index 0000000000..ce985708d0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ForwardingTimeline.java @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; + +/** + * An overridable {@link Timeline} implementation forwarding all methods to another timeline. + */ +public abstract class ForwardingTimeline extends Timeline { + + protected final Timeline timeline; + + public ForwardingTimeline(Timeline timeline) { + this.timeline = timeline; + } + + @Override + public int getWindowCount() { + return timeline.getWindowCount(); + } + + @Override + public int getNextWindowIndex(int windowIndex, @Player.RepeatMode int repeatMode, + boolean shuffleModeEnabled) { + return timeline.getNextWindowIndex(windowIndex, repeatMode, shuffleModeEnabled); + } + + @Override + public int getPreviousWindowIndex(int windowIndex, @Player.RepeatMode int repeatMode, + boolean shuffleModeEnabled) { + return timeline.getPreviousWindowIndex(windowIndex, repeatMode, shuffleModeEnabled); + } + + @Override + public int getLastWindowIndex(boolean shuffleModeEnabled) { + return timeline.getLastWindowIndex(shuffleModeEnabled); + } + + @Override + public int getFirstWindowIndex(boolean shuffleModeEnabled) { + return timeline.getFirstWindowIndex(shuffleModeEnabled); + } + + @Override + public Window getWindow(int windowIndex, Window window, long defaultPositionProjectionUs) { + return timeline.getWindow(windowIndex, window, defaultPositionProjectionUs); + } + + @Override + public int getPeriodCount() { + return timeline.getPeriodCount(); + } + + @Override + public Period getPeriod(int periodIndex, Period period, boolean setIds) { + return timeline.getPeriod(periodIndex, period, setIds); + } + + @Override + public int getIndexOfPeriod(Object uid) { + return timeline.getIndexOfPeriod(uid); + } + + @Override + public Object getUidOfPeriod(int periodIndex) { + return timeline.getUidOfPeriod(periodIndex); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/IcyDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/IcyDataSource.java new file mode 100644 index 0000000000..b35525743a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/IcyDataSource.java @@ -0,0 +1,149 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; +import java.util.List; +import java.util.Map; + +/** + * Splits ICY stream metadata out from a stream. + * + *

Note: {@link #open(DataSpec)} and {@link #close()} are not supported. This implementation is + * intended to wrap upstream {@link DataSource} instances that are opened and closed directly. + */ +/* package */ final class IcyDataSource implements DataSource { + + public interface Listener { + + /** + * Called when ICY stream metadata has been split from the stream. + * + * @param metadata The stream metadata in binary form. + */ + void onIcyMetadata(ParsableByteArray metadata); + } + + private final DataSource upstream; + private final int metadataIntervalBytes; + private final Listener listener; + private final byte[] metadataLengthByteHolder; + private int bytesUntilMetadata; + + /** + * @param upstream The upstream {@link DataSource}. + * @param metadataIntervalBytes The interval between ICY stream metadata, in bytes. + * @param listener A listener to which stream metadata is delivered. + */ + public IcyDataSource(DataSource upstream, int metadataIntervalBytes, Listener listener) { + Assertions.checkArgument(metadataIntervalBytes > 0); + this.upstream = upstream; + this.metadataIntervalBytes = metadataIntervalBytes; + this.listener = listener; + metadataLengthByteHolder = new byte[1]; + bytesUntilMetadata = metadataIntervalBytes; + } + + @Override + public void addTransferListener(TransferListener transferListener) { + upstream.addTransferListener(transferListener); + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + throw new UnsupportedOperationException(); + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws IOException { + if (bytesUntilMetadata == 0) { + if (readMetadata()) { + bytesUntilMetadata = metadataIntervalBytes; + } else { + return C.RESULT_END_OF_INPUT; + } + } + int bytesRead = upstream.read(buffer, offset, Math.min(bytesUntilMetadata, readLength)); + if (bytesRead != C.RESULT_END_OF_INPUT) { + bytesUntilMetadata -= bytesRead; + } + return bytesRead; + } + + @Nullable + @Override + public Uri getUri() { + return upstream.getUri(); + } + + @Override + public Map> getResponseHeaders() { + return upstream.getResponseHeaders(); + } + + @Override + public void close() throws IOException { + throw new UnsupportedOperationException(); + } + + /** + * Reads an ICY stream metadata block, passing it to {@link #listener} unless the block is empty. + * + * @return True if the block was extracted, including if its length byte indicated a length of + * zero. False if the end of the stream was reached. + * @throws IOException If an error occurs reading from the wrapped {@link DataSource}. + */ + private boolean readMetadata() throws IOException { + int bytesRead = upstream.read(metadataLengthByteHolder, 0, 1); + if (bytesRead == C.RESULT_END_OF_INPUT) { + return false; + } + int metadataLength = (metadataLengthByteHolder[0] & 0xFF) << 4; + if (metadataLength == 0) { + return true; + } + + int offset = 0; + int lengthRemaining = metadataLength; + byte[] metadata = new byte[metadataLength]; + while (lengthRemaining > 0) { + bytesRead = upstream.read(metadata, offset, lengthRemaining); + if (bytesRead == C.RESULT_END_OF_INPUT) { + return false; + } + offset += bytesRead; + lengthRemaining -= bytesRead; + } + + // Discard trailing zero bytes. + while (metadataLength > 0 && metadata[metadataLength - 1] == 0) { + metadataLength--; + } + + if (metadataLength > 0) { + listener.onIcyMetadata(new ParsableByteArray(metadata, metadataLength)); + } + return true; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/LoopingMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/LoopingMediaSource.java new file mode 100644 index 0000000000..880bfd6a4f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/LoopingMediaSource.java @@ -0,0 +1,214 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ShuffleOrder.UnshuffledShuffleOrder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.HashMap; +import java.util.Map; + +/** + * Loops a {@link MediaSource} a specified number of times. + * + *

Note: To loop a {@link MediaSource} indefinitely, it is usually better to use {@link + * ExoPlayer#setRepeatMode(int)} instead of this class. + */ +public final class LoopingMediaSource extends CompositeMediaSource { + + private final MediaSource childSource; + private final int loopCount; + private final Map childMediaPeriodIdToMediaPeriodId; + private final Map mediaPeriodToChildMediaPeriodId; + + /** + * Loops the provided source indefinitely. Note that it is usually better to use + * {@link ExoPlayer#setRepeatMode(int)}. + * + * @param childSource The {@link MediaSource} to loop. + */ + public LoopingMediaSource(MediaSource childSource) { + this(childSource, Integer.MAX_VALUE); + } + + /** + * Loops the provided source a specified number of times. + * + * @param childSource The {@link MediaSource} to loop. + * @param loopCount The desired number of loops. Must be strictly positive. + */ + public LoopingMediaSource(MediaSource childSource, int loopCount) { + Assertions.checkArgument(loopCount > 0); + this.childSource = childSource; + this.loopCount = loopCount; + childMediaPeriodIdToMediaPeriodId = new HashMap<>(); + mediaPeriodToChildMediaPeriodId = new HashMap<>(); + } + + @Override + @Nullable + public Object getTag() { + return childSource.getTag(); + } + + @Override + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + super.prepareSourceInternal(mediaTransferListener); + prepareChildSource(/* id= */ null, childSource); + } + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + if (loopCount == Integer.MAX_VALUE) { + return childSource.createPeriod(id, allocator, startPositionUs); + } + Object childPeriodUid = LoopingTimeline.getChildPeriodUidFromConcatenatedUid(id.periodUid); + MediaPeriodId childMediaPeriodId = id.copyWithPeriodUid(childPeriodUid); + childMediaPeriodIdToMediaPeriodId.put(childMediaPeriodId, id); + MediaPeriod mediaPeriod = + childSource.createPeriod(childMediaPeriodId, allocator, startPositionUs); + mediaPeriodToChildMediaPeriodId.put(mediaPeriod, childMediaPeriodId); + return mediaPeriod; + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + childSource.releasePeriod(mediaPeriod); + MediaPeriodId childMediaPeriodId = mediaPeriodToChildMediaPeriodId.remove(mediaPeriod); + if (childMediaPeriodId != null) { + childMediaPeriodIdToMediaPeriodId.remove(childMediaPeriodId); + } + } + + @Override + protected void onChildSourceInfoRefreshed(Void id, MediaSource mediaSource, Timeline timeline) { + Timeline loopingTimeline = + loopCount != Integer.MAX_VALUE + ? new LoopingTimeline(timeline, loopCount) + : new InfinitelyLoopingTimeline(timeline); + refreshSourceInfo(loopingTimeline); + } + + @Override + protected @Nullable MediaPeriodId getMediaPeriodIdForChildMediaPeriodId( + Void id, MediaPeriodId mediaPeriodId) { + return loopCount != Integer.MAX_VALUE + ? childMediaPeriodIdToMediaPeriodId.get(mediaPeriodId) + : mediaPeriodId; + } + + private static final class LoopingTimeline extends AbstractConcatenatedTimeline { + + private final Timeline childTimeline; + private final int childPeriodCount; + private final int childWindowCount; + private final int loopCount; + + public LoopingTimeline(Timeline childTimeline, int loopCount) { + super(/* isAtomic= */ false, new UnshuffledShuffleOrder(loopCount)); + this.childTimeline = childTimeline; + childPeriodCount = childTimeline.getPeriodCount(); + childWindowCount = childTimeline.getWindowCount(); + this.loopCount = loopCount; + if (childPeriodCount > 0) { + Assertions.checkState(loopCount <= Integer.MAX_VALUE / childPeriodCount, + "LoopingMediaSource contains too many periods"); + } + } + + @Override + public int getWindowCount() { + return childWindowCount * loopCount; + } + + @Override + public int getPeriodCount() { + return childPeriodCount * loopCount; + } + + @Override + protected int getChildIndexByPeriodIndex(int periodIndex) { + return periodIndex / childPeriodCount; + } + + @Override + protected int getChildIndexByWindowIndex(int windowIndex) { + return windowIndex / childWindowCount; + } + + @Override + protected int getChildIndexByChildUid(Object childUid) { + if (!(childUid instanceof Integer)) { + return C.INDEX_UNSET; + } + return (Integer) childUid; + } + + @Override + protected Timeline getTimelineByChildIndex(int childIndex) { + return childTimeline; + } + + @Override + protected int getFirstPeriodIndexByChildIndex(int childIndex) { + return childIndex * childPeriodCount; + } + + @Override + protected int getFirstWindowIndexByChildIndex(int childIndex) { + return childIndex * childWindowCount; + } + + @Override + protected Object getChildUidByChildIndex(int childIndex) { + return childIndex; + } + + } + + private static final class InfinitelyLoopingTimeline extends ForwardingTimeline { + + public InfinitelyLoopingTimeline(Timeline timeline) { + super(timeline); + } + + @Override + public int getNextWindowIndex(int windowIndex, @Player.RepeatMode int repeatMode, + boolean shuffleModeEnabled) { + int childNextWindowIndex = timeline.getNextWindowIndex(windowIndex, repeatMode, + shuffleModeEnabled); + return childNextWindowIndex == C.INDEX_UNSET ? getFirstWindowIndex(shuffleModeEnabled) + : childNextWindowIndex; + } + + @Override + public int getPreviousWindowIndex(int windowIndex, @Player.RepeatMode int repeatMode, + boolean shuffleModeEnabled) { + int childPreviousWindowIndex = timeline.getPreviousWindowIndex(windowIndex, repeatMode, + shuffleModeEnabled); + return childPreviousWindowIndex == C.INDEX_UNSET ? getLastWindowIndex(shuffleModeEnabled) + : childPreviousWindowIndex; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MaskingMediaPeriod.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MaskingMediaPeriod.java new file mode 100644 index 0000000000..4fe7b137b6 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MaskingMediaPeriod.java @@ -0,0 +1,236 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import java.io.IOException; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * Media period that wraps a media source and defers calling its {@link + * MediaSource#createPeriod(MediaPeriodId, Allocator, long)} method until {@link + * #createPeriod(MediaPeriodId)} has been called. This is useful if you need to return a media + * period immediately but the media source that should create it is not yet prepared. + */ +public final class MaskingMediaPeriod implements MediaPeriod, MediaPeriod.Callback { + + /** Listener for preparation errors. */ + public interface PrepareErrorListener { + + /** + * Called the first time an error occurs while refreshing source info or preparing the period. + */ + void onPrepareError(MediaPeriodId mediaPeriodId, IOException exception); + } + + /** The {@link MediaSource} which will create the actual media period. */ + public final MediaSource mediaSource; + /** The {@link MediaPeriodId} used to create the masking media period. */ + public final MediaPeriodId id; + + private final Allocator allocator; + + @Nullable private MediaPeriod mediaPeriod; + @Nullable private Callback callback; + private long preparePositionUs; + @Nullable private PrepareErrorListener listener; + private boolean notifiedPrepareError; + private long preparePositionOverrideUs; + + /** + * Creates a new masking media period. + * + * @param mediaSource The media source to wrap. + * @param id The identifier used to create the masking media period. + * @param allocator The allocator used to create the media period. + * @param preparePositionUs The expected start position, in microseconds. + */ + public MaskingMediaPeriod( + MediaSource mediaSource, MediaPeriodId id, Allocator allocator, long preparePositionUs) { + this.id = id; + this.allocator = allocator; + this.mediaSource = mediaSource; + this.preparePositionUs = preparePositionUs; + preparePositionOverrideUs = C.TIME_UNSET; + } + + /** + * Sets a listener for preparation errors. + * + * @param listener An listener to be notified of media period preparation errors. If a listener is + * set, {@link #maybeThrowPrepareError()} will not throw but will instead pass the first + * preparation error (if any) to the listener. + */ + public void setPrepareErrorListener(PrepareErrorListener listener) { + this.listener = listener; + } + + /** Returns the position at which the masking media period was prepared, in microseconds. */ + public long getPreparePositionUs() { + return preparePositionUs; + } + + /** + * Overrides the default prepare position at which to prepare the media period. This value is only + * used if called before {@link #createPeriod(MediaPeriodId)}. + * + * @param preparePositionUs The default prepare position to use, in microseconds. + */ + public void overridePreparePositionUs(long preparePositionUs) { + preparePositionOverrideUs = preparePositionUs; + } + + /** + * Calls {@link MediaSource#createPeriod(MediaPeriodId, Allocator, long)} on the wrapped source + * then prepares it if {@link #prepare(Callback, long)} has been called. Call {@link + * #releasePeriod()} to release the period. + * + * @param id The identifier that should be used to create the media period from the media source. + */ + public void createPeriod(MediaPeriodId id) { + long preparePositionUs = getPreparePositionWithOverride(this.preparePositionUs); + mediaPeriod = mediaSource.createPeriod(id, allocator, preparePositionUs); + if (callback != null) { + mediaPeriod.prepare(this, preparePositionUs); + } + } + + /** + * Releases the period. + */ + public void releasePeriod() { + if (mediaPeriod != null) { + mediaSource.releasePeriod(mediaPeriod); + } + } + + @Override + public void prepare(Callback callback, long preparePositionUs) { + this.callback = callback; + if (mediaPeriod != null) { + mediaPeriod.prepare(this, getPreparePositionWithOverride(this.preparePositionUs)); + } + } + + @Override + public void maybeThrowPrepareError() throws IOException { + try { + if (mediaPeriod != null) { + mediaPeriod.maybeThrowPrepareError(); + } else { + mediaSource.maybeThrowSourceInfoRefreshError(); + } + } catch (final IOException e) { + if (listener == null) { + throw e; + } + if (!notifiedPrepareError) { + notifiedPrepareError = true; + listener.onPrepareError(id, e); + } + } + } + + @Override + public TrackGroupArray getTrackGroups() { + return castNonNull(mediaPeriod).getTrackGroups(); + } + + @Override + public long selectTracks( + @NullableType TrackSelection[] selections, + boolean[] mayRetainStreamFlags, + @NullableType SampleStream[] streams, + boolean[] streamResetFlags, + long positionUs) { + if (preparePositionOverrideUs != C.TIME_UNSET && positionUs == preparePositionUs) { + positionUs = preparePositionOverrideUs; + preparePositionOverrideUs = C.TIME_UNSET; + } + return castNonNull(mediaPeriod) + .selectTracks(selections, mayRetainStreamFlags, streams, streamResetFlags, positionUs); + } + + @Override + public void discardBuffer(long positionUs, boolean toKeyframe) { + castNonNull(mediaPeriod).discardBuffer(positionUs, toKeyframe); + } + + @Override + public long readDiscontinuity() { + return castNonNull(mediaPeriod).readDiscontinuity(); + } + + @Override + public long getBufferedPositionUs() { + return castNonNull(mediaPeriod).getBufferedPositionUs(); + } + + @Override + public long seekToUs(long positionUs) { + return castNonNull(mediaPeriod).seekToUs(positionUs); + } + + @Override + public long getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters) { + return castNonNull(mediaPeriod).getAdjustedSeekPositionUs(positionUs, seekParameters); + } + + @Override + public long getNextLoadPositionUs() { + return castNonNull(mediaPeriod).getNextLoadPositionUs(); + } + + @Override + public void reevaluateBuffer(long positionUs) { + castNonNull(mediaPeriod).reevaluateBuffer(positionUs); + } + + @Override + public boolean continueLoading(long positionUs) { + return mediaPeriod != null && mediaPeriod.continueLoading(positionUs); + } + + @Override + public boolean isLoading() { + return mediaPeriod != null && mediaPeriod.isLoading(); + } + + @Override + public void onContinueLoadingRequested(MediaPeriod source) { + castNonNull(callback).onContinueLoadingRequested(this); + } + + // MediaPeriod.Callback implementation + + @Override + public void onPrepared(MediaPeriod mediaPeriod) { + castNonNull(callback).onPrepared(this); + } + + private long getPreparePositionWithOverride(long preparePositionUs) { + return preparePositionOverrideUs != C.TIME_UNSET + ? preparePositionOverrideUs + : preparePositionUs; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MaskingMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MaskingMediaSource.java new file mode 100644 index 0000000000..8c867a8c26 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MaskingMediaSource.java @@ -0,0 +1,353 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline.Window; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** + * A {@link MediaSource} that masks the {@link Timeline} with a placeholder until the actual media + * structure is known. + */ +public final class MaskingMediaSource extends CompositeMediaSource { + + private final MediaSource mediaSource; + private final boolean useLazyPreparation; + private final Timeline.Window window; + private final Timeline.Period period; + + private MaskingTimeline timeline; + @Nullable private MaskingMediaPeriod unpreparedMaskingMediaPeriod; + @Nullable private EventDispatcher unpreparedMaskingMediaPeriodEventDispatcher; + private boolean hasStartedPreparing; + private boolean isPrepared; + + /** + * Creates the masking media source. + * + * @param mediaSource A {@link MediaSource}. + * @param useLazyPreparation Whether the {@code mediaSource} is prepared lazily. If false, all + * manifest loads and other initial preparation steps happen immediately. If true, these + * initial preparations are triggered only when the player starts buffering the media. + */ + public MaskingMediaSource(MediaSource mediaSource, boolean useLazyPreparation) { + this.mediaSource = mediaSource; + this.useLazyPreparation = useLazyPreparation; + window = new Timeline.Window(); + period = new Timeline.Period(); + timeline = MaskingTimeline.createWithDummyTimeline(mediaSource.getTag()); + } + + /** Returns the {@link Timeline}. */ + public Timeline getTimeline() { + return timeline; + } + + @Override + public void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + super.prepareSourceInternal(mediaTransferListener); + if (!useLazyPreparation) { + hasStartedPreparing = true; + prepareChildSource(/* id= */ null, mediaSource); + } + } + + @Nullable + @Override + public Object getTag() { + return mediaSource.getTag(); + } + + @Override + @SuppressWarnings("MissingSuperCall") + public void maybeThrowSourceInfoRefreshError() throws IOException { + // Do nothing. Source info refresh errors will be thrown when calling + // MaskingMediaPeriod.maybeThrowPrepareError. + } + + @Override + public MaskingMediaPeriod createPeriod( + MediaPeriodId id, Allocator allocator, long startPositionUs) { + MaskingMediaPeriod mediaPeriod = + new MaskingMediaPeriod(mediaSource, id, allocator, startPositionUs); + if (isPrepared) { + MediaPeriodId idInSource = id.copyWithPeriodUid(getInternalPeriodUid(id.periodUid)); + mediaPeriod.createPeriod(idInSource); + } else { + // We should have at most one media period while source is unprepared because the duration is + // unset and we don't load beyond periods with unset duration. We need to figure out how to + // handle the prepare positions of multiple deferred media periods, should that ever change. + unpreparedMaskingMediaPeriod = mediaPeriod; + unpreparedMaskingMediaPeriodEventDispatcher = + createEventDispatcher(/* windowIndex= */ 0, id, /* mediaTimeOffsetMs= */ 0); + unpreparedMaskingMediaPeriodEventDispatcher.mediaPeriodCreated(); + if (!hasStartedPreparing) { + hasStartedPreparing = true; + prepareChildSource(/* id= */ null, mediaSource); + } + } + return mediaPeriod; + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + ((MaskingMediaPeriod) mediaPeriod).releasePeriod(); + if (mediaPeriod == unpreparedMaskingMediaPeriod) { + Assertions.checkNotNull(unpreparedMaskingMediaPeriodEventDispatcher).mediaPeriodReleased(); + unpreparedMaskingMediaPeriodEventDispatcher = null; + unpreparedMaskingMediaPeriod = null; + } + } + + @Override + public void releaseSourceInternal() { + isPrepared = false; + hasStartedPreparing = false; + super.releaseSourceInternal(); + } + + @Override + protected void onChildSourceInfoRefreshed( + Void id, MediaSource mediaSource, Timeline newTimeline) { + if (isPrepared) { + timeline = timeline.cloneWithUpdatedTimeline(newTimeline); + } else if (newTimeline.isEmpty()) { + timeline = + MaskingTimeline.createWithRealTimeline( + newTimeline, Window.SINGLE_WINDOW_UID, MaskingTimeline.DUMMY_EXTERNAL_PERIOD_UID); + } else { + // Determine first period and the start position. + // This will be: + // 1. The default window start position if no deferred period has been created yet. + // 2. The non-zero prepare position of the deferred period under the assumption that this is + // a non-zero initial seek position in the window. + // 3. The default window start position if the deferred period has a prepare position of zero + // under the assumption that the prepare position of zero was used because it's the + // default position of the DummyTimeline window. Note that this will override an + // intentional seek to zero for a window with a non-zero default position. This is + // unlikely to be a problem as a non-zero default position usually only occurs for live + // playbacks and seeking to zero in a live window would cause BehindLiveWindowExceptions + // anyway. + newTimeline.getWindow(/* windowIndex= */ 0, window); + long windowStartPositionUs = window.getDefaultPositionUs(); + if (unpreparedMaskingMediaPeriod != null) { + long periodPreparePositionUs = unpreparedMaskingMediaPeriod.getPreparePositionUs(); + if (periodPreparePositionUs != 0) { + windowStartPositionUs = periodPreparePositionUs; + } + } + Object windowUid = window.uid; + Pair periodPosition = + newTimeline.getPeriodPosition( + window, period, /* windowIndex= */ 0, windowStartPositionUs); + Object periodUid = periodPosition.first; + long periodPositionUs = periodPosition.second; + timeline = MaskingTimeline.createWithRealTimeline(newTimeline, windowUid, periodUid); + if (unpreparedMaskingMediaPeriod != null) { + MaskingMediaPeriod maskingPeriod = unpreparedMaskingMediaPeriod; + maskingPeriod.overridePreparePositionUs(periodPositionUs); + MediaPeriodId idInSource = + maskingPeriod.id.copyWithPeriodUid(getInternalPeriodUid(maskingPeriod.id.periodUid)); + maskingPeriod.createPeriod(idInSource); + } + } + isPrepared = true; + refreshSourceInfo(this.timeline); + } + + @Nullable + @Override + protected MediaPeriodId getMediaPeriodIdForChildMediaPeriodId( + Void id, MediaPeriodId mediaPeriodId) { + return mediaPeriodId.copyWithPeriodUid(getExternalPeriodUid(mediaPeriodId.periodUid)); + } + + @Override + protected boolean shouldDispatchCreateOrReleaseEvent(MediaPeriodId mediaPeriodId) { + // Suppress create and release events for the period created while the source was still + // unprepared, as we send these events from this class. + return unpreparedMaskingMediaPeriod == null + || !mediaPeriodId.equals(unpreparedMaskingMediaPeriod.id); + } + + private Object getInternalPeriodUid(Object externalPeriodUid) { + return externalPeriodUid.equals(MaskingTimeline.DUMMY_EXTERNAL_PERIOD_UID) + ? timeline.replacedInternalPeriodUid + : externalPeriodUid; + } + + private Object getExternalPeriodUid(Object internalPeriodUid) { + return timeline.replacedInternalPeriodUid.equals(internalPeriodUid) + ? MaskingTimeline.DUMMY_EXTERNAL_PERIOD_UID + : internalPeriodUid; + } + + /** + * Timeline used as placeholder for an unprepared media source. After preparation, a + * MaskingTimeline is used to keep the originally assigned dummy period ID. + */ + private static final class MaskingTimeline extends ForwardingTimeline { + + public static final Object DUMMY_EXTERNAL_PERIOD_UID = new Object(); + + private final Object replacedInternalWindowUid; + private final Object replacedInternalPeriodUid; + + /** + * Returns an instance with a dummy timeline using the provided window tag. + * + * @param windowTag A window tag. + */ + public static MaskingTimeline createWithDummyTimeline(@Nullable Object windowTag) { + return new MaskingTimeline( + new DummyTimeline(windowTag), Window.SINGLE_WINDOW_UID, DUMMY_EXTERNAL_PERIOD_UID); + } + + /** + * Returns an instance with a real timeline, replacing the provided period ID with the already + * assigned dummy period ID. + * + * @param timeline The real timeline. + * @param firstWindowUid The window UID in the timeline which will be replaced by the already + * assigned {@link Window#SINGLE_WINDOW_UID}. + * @param firstPeriodUid The period UID in the timeline which will be replaced by the already + * assigned {@link #DUMMY_EXTERNAL_PERIOD_UID}. + */ + public static MaskingTimeline createWithRealTimeline( + Timeline timeline, Object firstWindowUid, Object firstPeriodUid) { + return new MaskingTimeline(timeline, firstWindowUid, firstPeriodUid); + } + + private MaskingTimeline( + Timeline timeline, Object replacedInternalWindowUid, Object replacedInternalPeriodUid) { + super(timeline); + this.replacedInternalWindowUid = replacedInternalWindowUid; + this.replacedInternalPeriodUid = replacedInternalPeriodUid; + } + + /** + * Returns a copy with an updated timeline. This keeps the existing period replacement. + * + * @param timeline The new timeline. + */ + public MaskingTimeline cloneWithUpdatedTimeline(Timeline timeline) { + return new MaskingTimeline(timeline, replacedInternalWindowUid, replacedInternalPeriodUid); + } + + /** Returns the wrapped timeline. */ + public Timeline getTimeline() { + return timeline; + } + + @Override + public Window getWindow(int windowIndex, Window window, long defaultPositionProjectionUs) { + timeline.getWindow(windowIndex, window, defaultPositionProjectionUs); + if (Util.areEqual(window.uid, replacedInternalWindowUid)) { + window.uid = Window.SINGLE_WINDOW_UID; + } + return window; + } + + @Override + public Period getPeriod(int periodIndex, Period period, boolean setIds) { + timeline.getPeriod(periodIndex, period, setIds); + if (Util.areEqual(period.uid, replacedInternalPeriodUid)) { + period.uid = DUMMY_EXTERNAL_PERIOD_UID; + } + return period; + } + + @Override + public int getIndexOfPeriod(Object uid) { + return timeline.getIndexOfPeriod( + DUMMY_EXTERNAL_PERIOD_UID.equals(uid) ? replacedInternalPeriodUid : uid); + } + + @Override + public Object getUidOfPeriod(int periodIndex) { + Object uid = timeline.getUidOfPeriod(periodIndex); + return Util.areEqual(uid, replacedInternalPeriodUid) ? DUMMY_EXTERNAL_PERIOD_UID : uid; + } + } + + /** Dummy placeholder timeline with one dynamic window with a period of indeterminate duration. */ + private static final class DummyTimeline extends Timeline { + + @Nullable private final Object tag; + + public DummyTimeline(@Nullable Object tag) { + this.tag = tag; + } + + @Override + public int getWindowCount() { + return 1; + } + + @Override + public Window getWindow(int windowIndex, Window window, long defaultPositionProjectionUs) { + return window.set( + Window.SINGLE_WINDOW_UID, + tag, + /* manifest= */ null, + /* presentationStartTimeMs= */ C.TIME_UNSET, + /* windowStartTimeMs= */ C.TIME_UNSET, + /* isSeekable= */ false, + // Dynamic window to indicate pending timeline updates. + /* isDynamic= */ true, + /* isLive= */ false, + /* defaultPositionUs= */ 0, + /* durationUs= */ C.TIME_UNSET, + /* firstPeriodIndex= */ 0, + /* lastPeriodIndex= */ 0, + /* positionInFirstPeriodUs= */ 0); + } + + @Override + public int getPeriodCount() { + return 1; + } + + @Override + public Period getPeriod(int periodIndex, Period period, boolean setIds) { + return period.set( + /* id= */ 0, + /* uid= */ MaskingTimeline.DUMMY_EXTERNAL_PERIOD_UID, + /* windowIndex= */ 0, + /* durationUs = */ C.TIME_UNSET, + /* positionInWindowUs= */ 0); + } + + @Override + public int getIndexOfPeriod(Object uid) { + return uid == MaskingTimeline.DUMMY_EXTERNAL_PERIOD_UID ? 0 : C.INDEX_UNSET; + } + + @Override + public Object getUidOfPeriod(int periodIndex) { + return MaskingTimeline.DUMMY_EXTERNAL_PERIOD_UID; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaPeriod.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaPeriod.java new file mode 100644 index 0000000000..3effcec904 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaPeriod.java @@ -0,0 +1,251 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.StreamKey; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaSourceCaller; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import java.io.IOException; +import java.util.Collections; +import java.util.List; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * Loads media corresponding to a {@link Timeline.Period}, and allows that media to be read. All + * methods are called on the player's internal playback thread, as described in the + * {@link ExoPlayer} Javadoc. + */ +public interface MediaPeriod extends SequenceableLoader { + + /** + * A callback to be notified of {@link MediaPeriod} events. + */ + interface Callback extends SequenceableLoader.Callback { + + /** + * Called when preparation completes. + * + *

Called on the playback thread. After invoking this method, the {@link MediaPeriod} can + * expect for {@link #selectTracks(TrackSelection[], boolean[], SampleStream[], boolean[], + * long)} to be called with the initial track selection. + * + * @param mediaPeriod The prepared {@link MediaPeriod}. + */ + void onPrepared(MediaPeriod mediaPeriod); + } + + /** + * Prepares this media period asynchronously. + * + *

{@code callback.onPrepared} is called when preparation completes. If preparation fails, + * {@link #maybeThrowPrepareError()} will throw an {@link IOException}. + * + *

If preparation succeeds and results in a source timeline change (e.g. the period duration + * becoming known), {@link MediaSourceCaller#onSourceInfoRefreshed(MediaSource, Timeline)} will be + * called before {@code callback.onPrepared}. + * + * @param callback Callback to receive updates from this period, including being notified when + * preparation completes. + * @param positionUs The expected starting position, in microseconds. + */ + void prepare(Callback callback, long positionUs); + + /** + * Throws an error that's preventing the period from becoming prepared. Does nothing if no such + * error exists. + * + *

This method is only called before the period has completed preparation. + * + * @throws IOException The underlying error. + */ + void maybeThrowPrepareError() throws IOException; + + /** + * Returns the {@link TrackGroup}s exposed by the period. + * + *

This method is only called after the period has been prepared. + * + * @return The {@link TrackGroup}s. + */ + TrackGroupArray getTrackGroups(); + + /** + * Returns a list of {@link StreamKey StreamKeys} which allow to filter the media in this period + * to load only the parts needed to play the provided {@link TrackSelection TrackSelections}. + * + *

This method is only called after the period has been prepared. + * + * @param trackSelections The {@link TrackSelection TrackSelections} describing the tracks for + * which stream keys are requested. + * @return The corresponding {@link StreamKey StreamKeys} for the selected tracks, or an empty + * list if filtering is not possible and the entire media needs to be loaded to play the + * selected tracks. + */ + default List getStreamKeys(List trackSelections) { + return Collections.emptyList(); + } + + /** + * Performs a track selection. + * + *

The call receives track {@code selections} for each renderer, {@code mayRetainStreamFlags} + * indicating whether the existing {@link SampleStream} can be retained for each selection, and + * the existing {@code stream}s themselves. The call will update {@code streams} to reflect the + * provided selections, clearing, setting and replacing entries as required. If an existing sample + * stream is retained but with the requirement that the consuming renderer be reset, then the + * corresponding flag in {@code streamResetFlags} will be set to true. This flag will also be set + * if a new sample stream is created. + * + *

Note that previously passed {@link TrackSelection TrackSelections} are no longer valid, and + * any references to them must be updated to point to the new selections. + * + *

This method is only called after the period has been prepared. + * + * @param selections The renderer track selections. + * @param mayRetainStreamFlags Flags indicating whether the existing sample stream can be retained + * for each track selection. A {@code true} value indicates that the selection is equivalent + * to the one that was previously passed, and that the caller does not require that the sample + * stream be recreated. If a retained sample stream holds any references to the track + * selection then they must be updated to point to the new selection. + * @param streams The existing sample streams, which will be updated to reflect the provided + * selections. + * @param streamResetFlags Will be updated to indicate new sample streams, and sample streams that + * have been retained but with the requirement that the consuming renderer be reset. + * @param positionUs The current playback position in microseconds. If playback of this period has + * not yet started, the value will be the starting position. + * @return The actual position at which the tracks were enabled, in microseconds. + */ + long selectTracks( + @NullableType TrackSelection[] selections, + boolean[] mayRetainStreamFlags, + @NullableType SampleStream[] streams, + boolean[] streamResetFlags, + long positionUs); + + /** + * Discards buffered media up to the specified position. + * + *

This method is only called after the period has been prepared. + * + * @param positionUs The position in microseconds. + * @param toKeyframe If true then for each track discards samples up to the keyframe before or at + * the specified position, rather than any sample before or at that position. + */ + void discardBuffer(long positionUs, boolean toKeyframe); + + /** + * Attempts to read a discontinuity. + * + *

After this method has returned a value other than {@link C#TIME_UNSET}, all {@link + * SampleStream}s provided by the period are guaranteed to start from a key frame. + * + *

This method is only called after the period has been prepared and before reading from any + * {@link SampleStream}s provided by the period. + * + * @return If a discontinuity was read then the playback position in microseconds after the + * discontinuity. Else {@link C#TIME_UNSET}. + */ + long readDiscontinuity(); + + /** + * Attempts to seek to the specified position in microseconds. + * + *

After this method has been called, all {@link SampleStream}s provided by the period are + * guaranteed to start from a key frame. + * + *

This method is only called when at least one track is selected. + * + * @param positionUs The seek position in microseconds. + * @return The actual position to which the period was seeked, in microseconds. + */ + long seekToUs(long positionUs); + + /** + * Returns the position to which a seek will be performed, given the specified seek position and + * {@link SeekParameters}. + * + *

This method is only called after the period has been prepared. + * + * @param positionUs The seek position in microseconds. + * @param seekParameters Parameters that control how the seek is performed. Implementations may + * apply seek parameters on a best effort basis. + * @return The actual position to which a seek will be performed, in microseconds. + */ + long getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters); + + // SequenceableLoader interface. Overridden to provide more specific documentation. + + /** + * Returns an estimate of the position up to which data is buffered for the enabled tracks. + * + *

This method is only called when at least one track is selected. + * + * @return An estimate of the absolute position in microseconds up to which data is buffered, or + * {@link C#TIME_END_OF_SOURCE} if the track is fully buffered. + */ + @Override + long getBufferedPositionUs(); + + /** + * Returns the next load time, or {@link C#TIME_END_OF_SOURCE} if loading has finished. + * + *

This method is only called after the period has been prepared. It may be called when no + * tracks are selected. + */ + @Override + long getNextLoadPositionUs(); + + /** + * Attempts to continue loading. + * + *

This method may be called both during and after the period has been prepared. + * + *

A period may call {@link Callback#onContinueLoadingRequested(SequenceableLoader)} on the + * {@link Callback} passed to {@link #prepare(Callback, long)} to request that this method be + * called when the period is permitted to continue loading data. A period may do this both during + * and after preparation. + * + * @param positionUs The current playback position in microseconds. If playback of this period has + * not yet started, the value will be the starting position in this period minus the duration + * of any media in previous periods still to be played. + * @return True if progress was made, meaning that {@link #getNextLoadPositionUs()} will return a + * different value than prior to the call. False otherwise. + */ + @Override + boolean continueLoading(long positionUs); + + /** Returns whether the media period is currently loading. */ + boolean isLoading(); + + /** + * Re-evaluates the buffer given the playback position. + * + *

This method is only called after the period has been prepared. + * + *

A period may choose to discard buffered media so that it can be re-buffered in a different + * quality. + * + * @param positionUs The current playback position in microseconds. If playback of this period has + * not yet started, the value will be the starting position in this period minus the duration + * of any media in previous periods still to be played. + */ + @Override + void reevaluateBuffer(long positionUs); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaSource.java new file mode 100644 index 0000000000..7e757d5ade --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaSource.java @@ -0,0 +1,325 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.os.Handler; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import java.io.IOException; + +/** + * Defines and provides media to be played by an {@link org.mozilla.thirdparty.com.google.android.exoplayer2ExoPlayer}. A + * MediaSource has two main responsibilities: + * + *

    + *
  • To provide the player with a {@link Timeline} defining the structure of its media, and to + * provide a new timeline whenever the structure of the media changes. The MediaSource + * provides these timelines by calling {@link MediaSourceCaller#onSourceInfoRefreshed} on the + * {@link MediaSourceCaller}s passed to {@link #prepareSource(MediaSourceCaller, + * TransferListener)}. + *
  • To provide {@link MediaPeriod} instances for the periods in its timeline. MediaPeriods are + * obtained by calling {@link #createPeriod(MediaPeriodId, Allocator, long)}, and provide a + * way for the player to load and read the media. + *
+ * + * All methods are called on the player's internal playback thread, as described in the {@link + * com.google.android.exoplayer2.ExoPlayer} Javadoc. They should not be called directly from + * application code. Instances can be re-used, but only for one {@link + * com.google.android.exoplayer2.ExoPlayer} instance simultaneously. + */ +public interface MediaSource { + + /** A caller of media sources, which will be notified of source events. */ + interface MediaSourceCaller { + + /** + * Called when the {@link Timeline} has been refreshed. + * + *

Called on the playback thread. + * + * @param source The {@link MediaSource} whose info has been refreshed. + * @param timeline The source's timeline. + */ + void onSourceInfoRefreshed(MediaSource source, Timeline timeline); + } + + /** Identifier for a {@link MediaPeriod}. */ + final class MediaPeriodId { + + /** The unique id of the timeline period. */ + public final Object periodUid; + + /** + * If the media period is in an ad group, the index of the ad group in the period. + * {@link C#INDEX_UNSET} otherwise. + */ + public final int adGroupIndex; + + /** + * If the media period is in an ad group, the index of the ad in its ad group in the period. + * {@link C#INDEX_UNSET} otherwise. + */ + public final int adIndexInAdGroup; + + /** + * The sequence number of the window in the buffered sequence of windows this media period is + * part of. {@link C#INDEX_UNSET} if the media period id is not part of a buffered sequence of + * windows. + */ + public final long windowSequenceNumber; + + /** + * The index of the next ad group to which the media period's content is clipped, or {@link + * C#INDEX_UNSET} if there is no following ad group or if this media period is an ad. + */ + public final int nextAdGroupIndex; + + /** + * Creates a media period identifier for a dummy period which is not part of a buffered sequence + * of windows. + * + * @param periodUid The unique id of the timeline period. + */ + public MediaPeriodId(Object periodUid) { + this(periodUid, /* windowSequenceNumber= */ C.INDEX_UNSET); + } + + /** + * Creates a media period identifier for the specified period in the timeline. + * + * @param periodUid The unique id of the timeline period. + * @param windowSequenceNumber The sequence number of the window in the buffered sequence of + * windows this media period is part of. + */ + public MediaPeriodId(Object periodUid, long windowSequenceNumber) { + this( + periodUid, + /* adGroupIndex= */ C.INDEX_UNSET, + /* adIndexInAdGroup= */ C.INDEX_UNSET, + windowSequenceNumber, + /* nextAdGroupIndex= */ C.INDEX_UNSET); + } + + /** + * Creates a media period identifier for the specified clipped period in the timeline. + * + * @param periodUid The unique id of the timeline period. + * @param windowSequenceNumber The sequence number of the window in the buffered sequence of + * windows this media period is part of. + * @param nextAdGroupIndex The index of the next ad group to which the media period's content is + * clipped. + */ + public MediaPeriodId(Object periodUid, long windowSequenceNumber, int nextAdGroupIndex) { + this( + periodUid, + /* adGroupIndex= */ C.INDEX_UNSET, + /* adIndexInAdGroup= */ C.INDEX_UNSET, + windowSequenceNumber, + nextAdGroupIndex); + } + + /** + * Creates a media period identifier that identifies an ad within an ad group at the specified + * timeline period. + * + * @param periodUid The unique id of the timeline period that contains the ad group. + * @param adGroupIndex The index of the ad group. + * @param adIndexInAdGroup The index of the ad in the ad group. + * @param windowSequenceNumber The sequence number of the window in the buffered sequence of + * windows this media period is part of. + */ + public MediaPeriodId( + Object periodUid, int adGroupIndex, int adIndexInAdGroup, long windowSequenceNumber) { + this( + periodUid, + adGroupIndex, + adIndexInAdGroup, + windowSequenceNumber, + /* nextAdGroupIndex= */ C.INDEX_UNSET); + } + + private MediaPeriodId( + Object periodUid, + int adGroupIndex, + int adIndexInAdGroup, + long windowSequenceNumber, + int nextAdGroupIndex) { + this.periodUid = periodUid; + this.adGroupIndex = adGroupIndex; + this.adIndexInAdGroup = adIndexInAdGroup; + this.windowSequenceNumber = windowSequenceNumber; + this.nextAdGroupIndex = nextAdGroupIndex; + } + + /** Returns a copy of this period identifier but with {@code newPeriodUid} as its period uid. */ + public MediaPeriodId copyWithPeriodUid(Object newPeriodUid) { + return periodUid.equals(newPeriodUid) + ? this + : new MediaPeriodId( + newPeriodUid, adGroupIndex, adIndexInAdGroup, windowSequenceNumber, nextAdGroupIndex); + } + + /** + * Returns whether this period identifier identifies an ad in an ad group in a period. + */ + public boolean isAd() { + return adGroupIndex != C.INDEX_UNSET; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + + MediaPeriodId periodId = (MediaPeriodId) obj; + return periodUid.equals(periodId.periodUid) + && adGroupIndex == periodId.adGroupIndex + && adIndexInAdGroup == periodId.adIndexInAdGroup + && windowSequenceNumber == periodId.windowSequenceNumber + && nextAdGroupIndex == periodId.nextAdGroupIndex; + } + + @Override + public int hashCode() { + int result = 17; + result = 31 * result + periodUid.hashCode(); + result = 31 * result + adGroupIndex; + result = 31 * result + adIndexInAdGroup; + result = 31 * result + (int) windowSequenceNumber; + result = 31 * result + nextAdGroupIndex; + return result; + } + } + + /** + * Adds a {@link MediaSourceEventListener} to the list of listeners which are notified of media + * source events. + * + * @param handler A handler on the which listener events will be posted. + * @param eventListener The listener to be added. + */ + void addEventListener(Handler handler, MediaSourceEventListener eventListener); + + /** + * Removes a {@link MediaSourceEventListener} from the list of listeners which are notified of + * media source events. + * + * @param eventListener The listener to be removed. + */ + void removeEventListener(MediaSourceEventListener eventListener); + + /** Returns the tag set on the media source, or null if none was set. */ + @Nullable + default Object getTag() { + return null; + } + + /** + * Registers a {@link MediaSourceCaller}. Starts source preparation if needed and enables the + * source for the creation of {@link MediaPeriod MediaPerods}. + * + *

Should not be called directly from application code. + * + *

{@link MediaSourceCaller#onSourceInfoRefreshed(MediaSource, Timeline)} will be called once + * the source has a {@link Timeline}. + * + *

For each call to this method, a call to {@link #releaseSource(MediaSourceCaller)} is needed + * to remove the caller and to release the source if no longer required. + * + * @param caller The {@link MediaSourceCaller} to be registered. + * @param mediaTransferListener The transfer listener which should be informed of any media data + * transfers. May be null if no listener is available. Note that this listener should be only + * informed of transfers related to the media loads and not of auxiliary loads for manifests + * and other data. + */ + void prepareSource(MediaSourceCaller caller, @Nullable TransferListener mediaTransferListener); + + /** + * Throws any pending error encountered while loading or refreshing source information. + * + *

Should not be called directly from application code. + * + *

Must only be called after {@link #prepareSource(MediaSourceCaller, TransferListener)}. + */ + void maybeThrowSourceInfoRefreshError() throws IOException; + + /** + * Enables the source for the creation of {@link MediaPeriod MediaPeriods}. + * + *

Should not be called directly from application code. + * + *

Must only be called after {@link #prepareSource(MediaSourceCaller, TransferListener)}. + * + * @param caller The {@link MediaSourceCaller} enabling the source. + */ + void enable(MediaSourceCaller caller); + + /** + * Returns a new {@link MediaPeriod} identified by {@code periodId}. + * + *

Should not be called directly from application code. + * + *

Must only be called if the source is enabled. + * + * @param id The identifier of the period. + * @param allocator An {@link Allocator} from which to obtain media buffer allocations. + * @param startPositionUs The expected start position, in microseconds. + * @return A new {@link MediaPeriod}. + */ + MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs); + + /** + * Releases the period. + * + *

Should not be called directly from application code. + * + * @param mediaPeriod The period to release. + */ + void releasePeriod(MediaPeriod mediaPeriod); + + /** + * Disables the source for the creation of {@link MediaPeriod MediaPeriods}. The implementation + * should not hold onto limited resources used for the creation of media periods. + * + *

Should not be called directly from application code. + * + *

Must only be called after all {@link MediaPeriod MediaPeriods} previously created by {@link + * #createPeriod(MediaPeriodId, Allocator, long)} have been released by {@link + * #releasePeriod(MediaPeriod)}. + * + * @param caller The {@link MediaSourceCaller} disabling the source. + */ + void disable(MediaSourceCaller caller); + + /** + * Unregisters a caller, and disables and releases the source if no longer required. + * + *

Should not be called directly from application code. + * + *

Must only be called if all created {@link MediaPeriod MediaPeriods} have been released by + * {@link #releasePeriod(MediaPeriod)}. + * + * @param caller The {@link MediaSourceCaller} to be unregistered. + */ + void releaseSource(MediaSourceCaller caller); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaSourceEventListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaSourceEventListener.java new file mode 100644 index 0000000000..53c50d8a26 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaSourceEventListener.java @@ -0,0 +1,740 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.net.Uri; +import android.os.Handler; +import android.os.Looper; +import android.os.SystemClock; +import androidx.annotation.CheckResult; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.util.Collections; +import java.util.List; +import java.util.Map; +import java.util.concurrent.CopyOnWriteArrayList; + +/** Interface for callbacks to be notified of {@link MediaSource} events. */ +public interface MediaSourceEventListener { + + /** Media source load event information. */ + final class LoadEventInfo { + + /** Defines the requested data. */ + public final DataSpec dataSpec; + /** + * The {@link Uri} from which data is being read. The uri will be identical to the one in {@link + * #dataSpec}.uri unless redirection has occurred. If redirection has occurred, this is the uri + * after redirection. + */ + public final Uri uri; + /** The response headers associated with the load, or an empty map if unavailable. */ + public final Map> responseHeaders; + /** The value of {@link SystemClock#elapsedRealtime} at the time of the load event. */ + public final long elapsedRealtimeMs; + /** The duration of the load up to the event time. */ + public final long loadDurationMs; + /** The number of bytes that were loaded up to the event time. */ + public final long bytesLoaded; + + /** + * Creates load event info. + * + * @param dataSpec Defines the requested data. + * @param uri The {@link Uri} from which data is being read. The uri must be identical to the + * one in {@code dataSpec.uri} unless redirection has occurred. If redirection has occurred, + * this is the uri after redirection. + * @param responseHeaders The response headers associated with the load, or an empty map if + * unavailable. + * @param elapsedRealtimeMs The value of {@link SystemClock#elapsedRealtime} at the time of the + * load event. + * @param loadDurationMs The duration of the load up to the event time. + * @param bytesLoaded The number of bytes that were loaded up to the event time. For compressed + * network responses, this is the decompressed size. + */ + public LoadEventInfo( + DataSpec dataSpec, + Uri uri, + Map> responseHeaders, + long elapsedRealtimeMs, + long loadDurationMs, + long bytesLoaded) { + this.dataSpec = dataSpec; + this.uri = uri; + this.responseHeaders = responseHeaders; + this.elapsedRealtimeMs = elapsedRealtimeMs; + this.loadDurationMs = loadDurationMs; + this.bytesLoaded = bytesLoaded; + } + } + + /** Descriptor for data being loaded or selected by a media source. */ + final class MediaLoadData { + + /** One of the {@link C} {@code DATA_TYPE_*} constants defining the type of data. */ + public final int dataType; + /** + * One of the {@link C} {@code TRACK_TYPE_*} constants if the data corresponds to media of a + * specific type. {@link C#TRACK_TYPE_UNKNOWN} otherwise. + */ + public final int trackType; + /** + * The format of the track to which the data belongs. Null if the data does not belong to a + * specific track. + */ + @Nullable public final Format trackFormat; + /** + * One of the {@link C} {@code SELECTION_REASON_*} constants if the data belongs to a track. + * {@link C#SELECTION_REASON_UNKNOWN} otherwise. + */ + public final int trackSelectionReason; + /** + * Optional data associated with the selection of the track to which the data belongs. Null if + * the data does not belong to a track. + */ + @Nullable public final Object trackSelectionData; + /** + * The start time of the media, or {@link C#TIME_UNSET} if the data does not belong to a + * specific media period. + */ + public final long mediaStartTimeMs; + /** + * The end time of the media, or {@link C#TIME_UNSET} if the data does not belong to a specific + * media period or the end time is unknown. + */ + public final long mediaEndTimeMs; + + /** + * Creates media load data. + * + * @param dataType One of the {@link C} {@code DATA_TYPE_*} constants defining the type of data. + * @param trackType One of the {@link C} {@code TRACK_TYPE_*} constants if the data corresponds + * to media of a specific type. {@link C#TRACK_TYPE_UNKNOWN} otherwise. + * @param trackFormat The format of the track to which the data belongs. Null if the data does + * not belong to a track. + * @param trackSelectionReason One of the {@link C} {@code SELECTION_REASON_*} constants if the + * data belongs to a track. {@link C#SELECTION_REASON_UNKNOWN} otherwise. + * @param trackSelectionData Optional data associated with the selection of the track to which + * the data belongs. Null if the data does not belong to a track. + * @param mediaStartTimeMs The start time of the media, or {@link C#TIME_UNSET} if the data does + * not belong to a specific media period. + * @param mediaEndTimeMs The end time of the media, or {@link C#TIME_UNSET} if the data does not + * belong to a specific media period or the end time is unknown. + */ + public MediaLoadData( + int dataType, + int trackType, + @Nullable Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + long mediaStartTimeMs, + long mediaEndTimeMs) { + this.dataType = dataType; + this.trackType = trackType; + this.trackFormat = trackFormat; + this.trackSelectionReason = trackSelectionReason; + this.trackSelectionData = trackSelectionData; + this.mediaStartTimeMs = mediaStartTimeMs; + this.mediaEndTimeMs = mediaEndTimeMs; + } + } + + /** + * Called when a media period is created by the media source. + * + * @param windowIndex The window index in the timeline this media period belongs to. + * @param mediaPeriodId The {@link MediaPeriodId} of the created media period. + */ + default void onMediaPeriodCreated(int windowIndex, MediaPeriodId mediaPeriodId) {} + + /** + * Called when a media period is released by the media source. + * + * @param windowIndex The window index in the timeline this media period belongs to. + * @param mediaPeriodId The {@link MediaPeriodId} of the released media period. + */ + default void onMediaPeriodReleased(int windowIndex, MediaPeriodId mediaPeriodId) {} + + /** + * Called when a load begins. + * + * @param windowIndex The window index in the timeline of the media source this load belongs to. + * @param mediaPeriodId The {@link MediaPeriodId} this load belongs to. Null if the load does not + * belong to a specific media period. + * @param loadEventInfo The {@link LoadEventInfo} corresponding to the event. The value of {@link + * LoadEventInfo#uri} won't reflect potential redirection yet and {@link + * LoadEventInfo#responseHeaders} will be empty. + * @param mediaLoadData The {@link MediaLoadData} defining the data being loaded. + */ + default void onLoadStarted( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData) {} + + /** + * Called when a load ends. + * + * @param windowIndex The window index in the timeline of the media source this load belongs to. + * @param mediaPeriodId The {@link MediaPeriodId} this load belongs to. Null if the load does not + * belong to a specific media period. + * @param loadEventInfo The {@link LoadEventInfo} corresponding to the event. The values of {@link + * LoadEventInfo#elapsedRealtimeMs} and {@link LoadEventInfo#bytesLoaded} are relative to the + * corresponding {@link #onLoadStarted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)} + * event. + * @param mediaLoadData The {@link MediaLoadData} defining the data being loaded. + */ + default void onLoadCompleted( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData) {} + + /** + * Called when a load is canceled. + * + * @param windowIndex The window index in the timeline of the media source this load belongs to. + * @param mediaPeriodId The {@link MediaPeriodId} this load belongs to. Null if the load does not + * belong to a specific media period. + * @param loadEventInfo The {@link LoadEventInfo} corresponding to the event. The values of {@link + * LoadEventInfo#elapsedRealtimeMs} and {@link LoadEventInfo#bytesLoaded} are relative to the + * corresponding {@link #onLoadStarted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)} + * event. + * @param mediaLoadData The {@link MediaLoadData} defining the data being loaded. + */ + default void onLoadCanceled( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData) {} + + /** + * Called when a load error occurs. + * + *

The error may or may not have resulted in the load being canceled, as indicated by the + * {@code wasCanceled} parameter. If the load was canceled, {@link #onLoadCanceled} will + * not be called in addition to this method. + * + *

This method being called does not indicate that playback has failed, or that it will fail. + * The player may be able to recover from the error and continue. Hence applications should + * not implement this method to display a user visible error or initiate an application + * level retry ({@link Player.EventListener#onPlayerError} is the appropriate place to implement + * such behavior). This method is called to provide the application with an opportunity to log the + * error if it wishes to do so. + * + * @param windowIndex The window index in the timeline of the media source this load belongs to. + * @param mediaPeriodId The {@link MediaPeriodId} this load belongs to. Null if the load does not + * belong to a specific media period. + * @param loadEventInfo The {@link LoadEventInfo} corresponding to the event. The values of {@link + * LoadEventInfo#elapsedRealtimeMs} and {@link LoadEventInfo#bytesLoaded} are relative to the + * corresponding {@link #onLoadStarted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)} + * event. + * @param mediaLoadData The {@link MediaLoadData} defining the data being loaded. + * @param error The load error. + * @param wasCanceled Whether the load was canceled as a result of the error. + */ + default void onLoadError( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData, + IOException error, + boolean wasCanceled) {} + + /** + * Called when a media period is first being read from. + * + * @param windowIndex The window index in the timeline this media period belongs to. + * @param mediaPeriodId The {@link MediaPeriodId} of the media period being read from. + */ + default void onReadingStarted(int windowIndex, MediaPeriodId mediaPeriodId) {} + + /** + * Called when data is removed from the back of a media buffer, typically so that it can be + * re-buffered in a different format. + * + * @param windowIndex The window index in the timeline of the media source this load belongs to. + * @param mediaPeriodId The {@link MediaPeriodId} the media belongs to. + * @param mediaLoadData The {@link MediaLoadData} defining the media being discarded. + */ + default void onUpstreamDiscarded( + int windowIndex, MediaPeriodId mediaPeriodId, MediaLoadData mediaLoadData) {} + + /** + * Called when a downstream format change occurs (i.e. when the format of the media being read + * from one or more {@link SampleStream}s provided by the source changes). + * + * @param windowIndex The window index in the timeline of the media source this load belongs to. + * @param mediaPeriodId The {@link MediaPeriodId} the media belongs to. + * @param mediaLoadData The {@link MediaLoadData} defining the newly selected downstream data. + */ + default void onDownstreamFormatChanged( + int windowIndex, @Nullable MediaPeriodId mediaPeriodId, MediaLoadData mediaLoadData) {} + + /** Dispatches events to {@link MediaSourceEventListener}s. */ + final class EventDispatcher { + + /** The timeline window index reported with the events. */ + public final int windowIndex; + /** The {@link MediaPeriodId} reported with the events. */ + @Nullable public final MediaPeriodId mediaPeriodId; + + private final CopyOnWriteArrayList listenerAndHandlers; + private final long mediaTimeOffsetMs; + + /** Creates an event dispatcher. */ + public EventDispatcher() { + this( + /* listenerAndHandlers= */ new CopyOnWriteArrayList<>(), + /* windowIndex= */ 0, + /* mediaPeriodId= */ null, + /* mediaTimeOffsetMs= */ 0); + } + + private EventDispatcher( + CopyOnWriteArrayList listenerAndHandlers, + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + long mediaTimeOffsetMs) { + this.listenerAndHandlers = listenerAndHandlers; + this.windowIndex = windowIndex; + this.mediaPeriodId = mediaPeriodId; + this.mediaTimeOffsetMs = mediaTimeOffsetMs; + } + + /** + * Creates a view of the event dispatcher with pre-configured window index, media period id, and + * media time offset. + * + * @param windowIndex The timeline window index to be reported with the events. + * @param mediaPeriodId The {@link MediaPeriodId} to be reported with the events. + * @param mediaTimeOffsetMs The offset to be added to all media times, in milliseconds. + * @return A view of the event dispatcher with the pre-configured parameters. + */ + @CheckResult + public EventDispatcher withParameters( + int windowIndex, @Nullable MediaPeriodId mediaPeriodId, long mediaTimeOffsetMs) { + return new EventDispatcher( + listenerAndHandlers, windowIndex, mediaPeriodId, mediaTimeOffsetMs); + } + + /** + * Adds a listener to the event dispatcher. + * + * @param handler A handler on the which listener events will be posted. + * @param eventListener The listener to be added. + */ + public void addEventListener(Handler handler, MediaSourceEventListener eventListener) { + Assertions.checkArgument(handler != null && eventListener != null); + listenerAndHandlers.add(new ListenerAndHandler(handler, eventListener)); + } + + /** + * Removes a listener from the event dispatcher. + * + * @param eventListener The listener to be removed. + */ + public void removeEventListener(MediaSourceEventListener eventListener) { + for (ListenerAndHandler listenerAndHandler : listenerAndHandlers) { + if (listenerAndHandler.listener == eventListener) { + listenerAndHandlers.remove(listenerAndHandler); + } + } + } + + /** Dispatches {@link #onMediaPeriodCreated(int, MediaPeriodId)}. */ + public void mediaPeriodCreated() { + MediaPeriodId mediaPeriodId = Assertions.checkNotNull(this.mediaPeriodId); + for (ListenerAndHandler listenerAndHandler : listenerAndHandlers) { + final MediaSourceEventListener listener = listenerAndHandler.listener; + postOrRun( + listenerAndHandler.handler, + () -> listener.onMediaPeriodCreated(windowIndex, mediaPeriodId)); + } + } + + /** Dispatches {@link #onMediaPeriodReleased(int, MediaPeriodId)}. */ + public void mediaPeriodReleased() { + MediaPeriodId mediaPeriodId = Assertions.checkNotNull(this.mediaPeriodId); + for (ListenerAndHandler listenerAndHandler : listenerAndHandlers) { + final MediaSourceEventListener listener = listenerAndHandler.listener; + postOrRun( + listenerAndHandler.handler, + () -> listener.onMediaPeriodReleased(windowIndex, mediaPeriodId)); + } + } + + /** Dispatches {@link #onLoadStarted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)}. */ + public void loadStarted(DataSpec dataSpec, int dataType, long elapsedRealtimeMs) { + loadStarted( + dataSpec, + dataType, + C.TRACK_TYPE_UNKNOWN, + null, + C.SELECTION_REASON_UNKNOWN, + null, + C.TIME_UNSET, + C.TIME_UNSET, + elapsedRealtimeMs); + } + + /** Dispatches {@link #onLoadStarted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)}. */ + public void loadStarted( + DataSpec dataSpec, + int dataType, + int trackType, + @Nullable Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + long mediaStartTimeUs, + long mediaEndTimeUs, + long elapsedRealtimeMs) { + loadStarted( + new LoadEventInfo( + dataSpec, + dataSpec.uri, + /* responseHeaders= */ Collections.emptyMap(), + elapsedRealtimeMs, + /* loadDurationMs= */ 0, + /* bytesLoaded= */ 0), + new MediaLoadData( + dataType, + trackType, + trackFormat, + trackSelectionReason, + trackSelectionData, + adjustMediaTime(mediaStartTimeUs), + adjustMediaTime(mediaEndTimeUs))); + } + + /** Dispatches {@link #onLoadStarted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)}. */ + public void loadStarted(LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) { + for (ListenerAndHandler listenerAndHandler : listenerAndHandlers) { + final MediaSourceEventListener listener = listenerAndHandler.listener; + postOrRun( + listenerAndHandler.handler, + () -> listener.onLoadStarted(windowIndex, mediaPeriodId, loadEventInfo, mediaLoadData)); + } + } + + /** Dispatches {@link #onLoadCompleted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)}. */ + public void loadCompleted( + DataSpec dataSpec, + Uri uri, + Map> responseHeaders, + int dataType, + long elapsedRealtimeMs, + long loadDurationMs, + long bytesLoaded) { + loadCompleted( + dataSpec, + uri, + responseHeaders, + dataType, + C.TRACK_TYPE_UNKNOWN, + null, + C.SELECTION_REASON_UNKNOWN, + null, + C.TIME_UNSET, + C.TIME_UNSET, + elapsedRealtimeMs, + loadDurationMs, + bytesLoaded); + } + + /** Dispatches {@link #onLoadCompleted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)}. */ + public void loadCompleted( + DataSpec dataSpec, + Uri uri, + Map> responseHeaders, + int dataType, + int trackType, + @Nullable Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + long mediaStartTimeUs, + long mediaEndTimeUs, + long elapsedRealtimeMs, + long loadDurationMs, + long bytesLoaded) { + loadCompleted( + new LoadEventInfo( + dataSpec, uri, responseHeaders, elapsedRealtimeMs, loadDurationMs, bytesLoaded), + new MediaLoadData( + dataType, + trackType, + trackFormat, + trackSelectionReason, + trackSelectionData, + adjustMediaTime(mediaStartTimeUs), + adjustMediaTime(mediaEndTimeUs))); + } + + /** Dispatches {@link #onLoadCompleted(int, MediaPeriodId, LoadEventInfo, MediaLoadData)}. */ + public void loadCompleted(LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) { + for (ListenerAndHandler listenerAndHandler : listenerAndHandlers) { + final MediaSourceEventListener listener = listenerAndHandler.listener; + postOrRun( + listenerAndHandler.handler, + () -> + listener.onLoadCompleted(windowIndex, mediaPeriodId, loadEventInfo, mediaLoadData)); + } + } + + /** Dispatches {@link #onLoadCanceled(int, MediaPeriodId, LoadEventInfo, MediaLoadData)}. */ + public void loadCanceled( + DataSpec dataSpec, + Uri uri, + Map> responseHeaders, + int dataType, + long elapsedRealtimeMs, + long loadDurationMs, + long bytesLoaded) { + loadCanceled( + dataSpec, + uri, + responseHeaders, + dataType, + C.TRACK_TYPE_UNKNOWN, + null, + C.SELECTION_REASON_UNKNOWN, + null, + C.TIME_UNSET, + C.TIME_UNSET, + elapsedRealtimeMs, + loadDurationMs, + bytesLoaded); + } + + /** Dispatches {@link #onLoadCanceled(int, MediaPeriodId, LoadEventInfo, MediaLoadData)}. */ + public void loadCanceled( + DataSpec dataSpec, + Uri uri, + Map> responseHeaders, + int dataType, + int trackType, + @Nullable Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + long mediaStartTimeUs, + long mediaEndTimeUs, + long elapsedRealtimeMs, + long loadDurationMs, + long bytesLoaded) { + loadCanceled( + new LoadEventInfo( + dataSpec, uri, responseHeaders, elapsedRealtimeMs, loadDurationMs, bytesLoaded), + new MediaLoadData( + dataType, + trackType, + trackFormat, + trackSelectionReason, + trackSelectionData, + adjustMediaTime(mediaStartTimeUs), + adjustMediaTime(mediaEndTimeUs))); + } + + /** Dispatches {@link #onLoadCanceled(int, MediaPeriodId, LoadEventInfo, MediaLoadData)}. */ + public void loadCanceled(LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) { + for (ListenerAndHandler listenerAndHandler : listenerAndHandlers) { + MediaSourceEventListener listener = listenerAndHandler.listener; + postOrRun( + listenerAndHandler.handler, + () -> + listener.onLoadCanceled(windowIndex, mediaPeriodId, loadEventInfo, mediaLoadData)); + } + } + + /** + * Dispatches {@link #onLoadError(int, MediaPeriodId, LoadEventInfo, MediaLoadData, IOException, + * boolean)}. + */ + public void loadError( + DataSpec dataSpec, + Uri uri, + Map> responseHeaders, + int dataType, + long elapsedRealtimeMs, + long loadDurationMs, + long bytesLoaded, + IOException error, + boolean wasCanceled) { + loadError( + dataSpec, + uri, + responseHeaders, + dataType, + C.TRACK_TYPE_UNKNOWN, + null, + C.SELECTION_REASON_UNKNOWN, + null, + C.TIME_UNSET, + C.TIME_UNSET, + elapsedRealtimeMs, + loadDurationMs, + bytesLoaded, + error, + wasCanceled); + } + + /** + * Dispatches {@link #onLoadError(int, MediaPeriodId, LoadEventInfo, MediaLoadData, IOException, + * boolean)}. + */ + public void loadError( + DataSpec dataSpec, + Uri uri, + Map> responseHeaders, + int dataType, + int trackType, + @Nullable Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + long mediaStartTimeUs, + long mediaEndTimeUs, + long elapsedRealtimeMs, + long loadDurationMs, + long bytesLoaded, + IOException error, + boolean wasCanceled) { + loadError( + new LoadEventInfo( + dataSpec, uri, responseHeaders, elapsedRealtimeMs, loadDurationMs, bytesLoaded), + new MediaLoadData( + dataType, + trackType, + trackFormat, + trackSelectionReason, + trackSelectionData, + adjustMediaTime(mediaStartTimeUs), + adjustMediaTime(mediaEndTimeUs)), + error, + wasCanceled); + } + + /** + * Dispatches {@link #onLoadError(int, MediaPeriodId, LoadEventInfo, MediaLoadData, IOException, + * boolean)}. + */ + public void loadError( + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData, + IOException error, + boolean wasCanceled) { + for (ListenerAndHandler listenerAndHandler : listenerAndHandlers) { + final MediaSourceEventListener listener = listenerAndHandler.listener; + postOrRun( + listenerAndHandler.handler, + () -> + listener.onLoadError( + windowIndex, mediaPeriodId, loadEventInfo, mediaLoadData, error, wasCanceled)); + } + } + + /** Dispatches {@link #onReadingStarted(int, MediaPeriodId)}. */ + public void readingStarted() { + MediaPeriodId mediaPeriodId = Assertions.checkNotNull(this.mediaPeriodId); + for (ListenerAndHandler listenerAndHandler : listenerAndHandlers) { + final MediaSourceEventListener listener = listenerAndHandler.listener; + postOrRun( + listenerAndHandler.handler, + () -> listener.onReadingStarted(windowIndex, mediaPeriodId)); + } + } + + /** Dispatches {@link #onUpstreamDiscarded(int, MediaPeriodId, MediaLoadData)}. */ + public void upstreamDiscarded(int trackType, long mediaStartTimeUs, long mediaEndTimeUs) { + upstreamDiscarded( + new MediaLoadData( + C.DATA_TYPE_MEDIA, + trackType, + /* trackFormat= */ null, + C.SELECTION_REASON_ADAPTIVE, + /* trackSelectionData= */ null, + adjustMediaTime(mediaStartTimeUs), + adjustMediaTime(mediaEndTimeUs))); + } + + /** Dispatches {@link #onUpstreamDiscarded(int, MediaPeriodId, MediaLoadData)}. */ + public void upstreamDiscarded(MediaLoadData mediaLoadData) { + MediaPeriodId mediaPeriodId = Assertions.checkNotNull(this.mediaPeriodId); + for (ListenerAndHandler listenerAndHandler : listenerAndHandlers) { + final MediaSourceEventListener listener = listenerAndHandler.listener; + postOrRun( + listenerAndHandler.handler, + () -> listener.onUpstreamDiscarded(windowIndex, mediaPeriodId, mediaLoadData)); + } + } + + /** Dispatches {@link #onDownstreamFormatChanged(int, MediaPeriodId, MediaLoadData)}. */ + public void downstreamFormatChanged( + int trackType, + @Nullable Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + long mediaTimeUs) { + downstreamFormatChanged( + new MediaLoadData( + C.DATA_TYPE_MEDIA, + trackType, + trackFormat, + trackSelectionReason, + trackSelectionData, + adjustMediaTime(mediaTimeUs), + /* mediaEndTimeMs= */ C.TIME_UNSET)); + } + + /** Dispatches {@link #onDownstreamFormatChanged(int, MediaPeriodId, MediaLoadData)}. */ + public void downstreamFormatChanged(MediaLoadData mediaLoadData) { + for (ListenerAndHandler listenerAndHandler : listenerAndHandlers) { + final MediaSourceEventListener listener = listenerAndHandler.listener; + postOrRun( + listenerAndHandler.handler, + () -> listener.onDownstreamFormatChanged(windowIndex, mediaPeriodId, mediaLoadData)); + } + } + + private long adjustMediaTime(long mediaTimeUs) { + long mediaTimeMs = C.usToMs(mediaTimeUs); + return mediaTimeMs == C.TIME_UNSET ? C.TIME_UNSET : mediaTimeOffsetMs + mediaTimeMs; + } + + private void postOrRun(Handler handler, Runnable runnable) { + if (handler.getLooper() == Looper.myLooper()) { + runnable.run(); + } else { + handler.post(runnable); + } + } + + private static final class ListenerAndHandler { + + public final Handler handler; + public final MediaSourceEventListener listener; + + public ListenerAndHandler(Handler handler, MediaSourceEventListener listener) { + this.handler = handler; + this.listener = listener; + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaSourceFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaSourceFactory.java new file mode 100644 index 0000000000..37c9dcee25 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MediaSourceFactory.java @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.net.Uri; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.StreamKey; +import java.util.List; + +/** Factory for creating {@link MediaSource}s from URIs. */ +public interface MediaSourceFactory { + + /** + * Sets a list of {@link StreamKey StreamKeys} by which the manifest is filtered. + * + * @param streamKeys A list of {@link StreamKey StreamKeys}. + * @return This factory, for convenience. + * @throws IllegalStateException If {@link #createMediaSource(Uri)} has already been called. + */ + default MediaSourceFactory setStreamKeys(List streamKeys) { + return this; + } + + /** + * Sets the {@link DrmSessionManager} to use for acquiring {@link DrmSession DrmSessions}. + * + * @param drmSessionManager The {@link DrmSessionManager}. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + MediaSourceFactory setDrmSessionManager(DrmSessionManager drmSessionManager); + + /** + * Creates a new {@link MediaSource} with the specified {@code uri}. + * + * @param uri The URI to play. + * @return The new {@link MediaSource media source}. + */ + MediaSource createMediaSource(Uri uri); + + /** + * Returns the {@link C.ContentType content types} supported by media sources created by this + * factory. + */ + @C.ContentType + int[] getSupportedTypes(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MergingMediaPeriod.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MergingMediaPeriod.java new file mode 100644 index 0000000000..f3315ec5cd --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MergingMediaPeriod.java @@ -0,0 +1,256 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.IdentityHashMap; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * Merges multiple {@link MediaPeriod}s. + */ +/* package */ final class MergingMediaPeriod implements MediaPeriod, MediaPeriod.Callback { + + public final MediaPeriod[] periods; + + private final IdentityHashMap streamPeriodIndices; + private final CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory; + private final ArrayList childrenPendingPreparation; + + @Nullable private Callback callback; + @Nullable private TrackGroupArray trackGroups; + private MediaPeriod[] enabledPeriods; + private SequenceableLoader compositeSequenceableLoader; + + public MergingMediaPeriod(CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory, + MediaPeriod... periods) { + this.compositeSequenceableLoaderFactory = compositeSequenceableLoaderFactory; + this.periods = periods; + childrenPendingPreparation = new ArrayList<>(); + compositeSequenceableLoader = + compositeSequenceableLoaderFactory.createCompositeSequenceableLoader(); + streamPeriodIndices = new IdentityHashMap<>(); + enabledPeriods = new MediaPeriod[0]; + } + + @Override + public void prepare(Callback callback, long positionUs) { + this.callback = callback; + Collections.addAll(childrenPendingPreparation, periods); + for (MediaPeriod period : periods) { + period.prepare(this, positionUs); + } + } + + @Override + public void maybeThrowPrepareError() throws IOException { + for (MediaPeriod period : periods) { + period.maybeThrowPrepareError(); + } + } + + @Override + public TrackGroupArray getTrackGroups() { + return Assertions.checkNotNull(trackGroups); + } + + @Override + public long selectTracks( + @NullableType TrackSelection[] selections, + boolean[] mayRetainStreamFlags, + @NullableType SampleStream[] streams, + boolean[] streamResetFlags, + long positionUs) { + // Map each selection and stream onto a child period index. + int[] streamChildIndices = new int[selections.length]; + int[] selectionChildIndices = new int[selections.length]; + for (int i = 0; i < selections.length; i++) { + streamChildIndices[i] = streams[i] == null ? C.INDEX_UNSET + : streamPeriodIndices.get(streams[i]); + selectionChildIndices[i] = C.INDEX_UNSET; + if (selections[i] != null) { + TrackGroup trackGroup = selections[i].getTrackGroup(); + for (int j = 0; j < periods.length; j++) { + if (periods[j].getTrackGroups().indexOf(trackGroup) != C.INDEX_UNSET) { + selectionChildIndices[i] = j; + break; + } + } + } + } + streamPeriodIndices.clear(); + // Select tracks for each child, copying the resulting streams back into a new streams array. + @NullableType SampleStream[] newStreams = new SampleStream[selections.length]; + @NullableType SampleStream[] childStreams = new SampleStream[selections.length]; + @NullableType TrackSelection[] childSelections = new TrackSelection[selections.length]; + ArrayList enabledPeriodsList = new ArrayList<>(periods.length); + for (int i = 0; i < periods.length; i++) { + for (int j = 0; j < selections.length; j++) { + childStreams[j] = streamChildIndices[j] == i ? streams[j] : null; + childSelections[j] = selectionChildIndices[j] == i ? selections[j] : null; + } + long selectPositionUs = periods[i].selectTracks(childSelections, mayRetainStreamFlags, + childStreams, streamResetFlags, positionUs); + if (i == 0) { + positionUs = selectPositionUs; + } else if (selectPositionUs != positionUs) { + throw new IllegalStateException("Children enabled at different positions."); + } + boolean periodEnabled = false; + for (int j = 0; j < selections.length; j++) { + if (selectionChildIndices[j] == i) { + // Assert that the child provided a stream for the selection. + SampleStream childStream = Assertions.checkNotNull(childStreams[j]); + newStreams[j] = childStreams[j]; + periodEnabled = true; + streamPeriodIndices.put(childStream, i); + } else if (streamChildIndices[j] == i) { + // Assert that the child cleared any previous stream. + Assertions.checkState(childStreams[j] == null); + } + } + if (periodEnabled) { + enabledPeriodsList.add(periods[i]); + } + } + // Copy the new streams back into the streams array. + System.arraycopy(newStreams, 0, streams, 0, newStreams.length); + // Update the local state. + enabledPeriods = new MediaPeriod[enabledPeriodsList.size()]; + enabledPeriodsList.toArray(enabledPeriods); + compositeSequenceableLoader = + compositeSequenceableLoaderFactory.createCompositeSequenceableLoader(enabledPeriods); + return positionUs; + } + + @Override + public void discardBuffer(long positionUs, boolean toKeyframe) { + for (MediaPeriod period : enabledPeriods) { + period.discardBuffer(positionUs, toKeyframe); + } + } + + @Override + public void reevaluateBuffer(long positionUs) { + compositeSequenceableLoader.reevaluateBuffer(positionUs); + } + + @Override + public boolean continueLoading(long positionUs) { + if (!childrenPendingPreparation.isEmpty()) { + // Preparation is still going on. + int childrenPendingPreparationSize = childrenPendingPreparation.size(); + for (int i = 0; i < childrenPendingPreparationSize; i++) { + childrenPendingPreparation.get(i).continueLoading(positionUs); + } + return false; + } else { + return compositeSequenceableLoader.continueLoading(positionUs); + } + } + + @Override + public boolean isLoading() { + return compositeSequenceableLoader.isLoading(); + } + + @Override + public long getNextLoadPositionUs() { + return compositeSequenceableLoader.getNextLoadPositionUs(); + } + + @Override + public long readDiscontinuity() { + long positionUs = periods[0].readDiscontinuity(); + // Periods other than the first one are not allowed to report discontinuities. + for (int i = 1; i < periods.length; i++) { + if (periods[i].readDiscontinuity() != C.TIME_UNSET) { + throw new IllegalStateException("Child reported discontinuity."); + } + } + // It must be possible to seek enabled periods to the new position, if there is one. + if (positionUs != C.TIME_UNSET) { + for (MediaPeriod enabledPeriod : enabledPeriods) { + if (enabledPeriod != periods[0] + && enabledPeriod.seekToUs(positionUs) != positionUs) { + throw new IllegalStateException("Unexpected child seekToUs result."); + } + } + } + return positionUs; + } + + @Override + public long getBufferedPositionUs() { + return compositeSequenceableLoader.getBufferedPositionUs(); + } + + @Override + public long seekToUs(long positionUs) { + positionUs = enabledPeriods[0].seekToUs(positionUs); + // Additional periods must seek to the same position. + for (int i = 1; i < enabledPeriods.length; i++) { + if (enabledPeriods[i].seekToUs(positionUs) != positionUs) { + throw new IllegalStateException("Unexpected child seekToUs result."); + } + } + return positionUs; + } + + @Override + public long getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters) { + MediaPeriod queryPeriod = enabledPeriods.length > 0 ? enabledPeriods[0] : periods[0]; + return queryPeriod.getAdjustedSeekPositionUs(positionUs, seekParameters); + } + + // MediaPeriod.Callback implementation + + @Override + public void onPrepared(MediaPeriod preparedPeriod) { + childrenPendingPreparation.remove(preparedPeriod); + if (!childrenPendingPreparation.isEmpty()) { + return; + } + int totalTrackGroupCount = 0; + for (MediaPeriod period : periods) { + totalTrackGroupCount += period.getTrackGroups().length; + } + TrackGroup[] trackGroupArray = new TrackGroup[totalTrackGroupCount]; + int trackGroupIndex = 0; + for (MediaPeriod period : periods) { + TrackGroupArray periodTrackGroups = period.getTrackGroups(); + int periodTrackGroupCount = periodTrackGroups.length; + for (int j = 0; j < periodTrackGroupCount; j++) { + trackGroupArray[trackGroupIndex++] = periodTrackGroups.get(j); + } + } + trackGroups = new TrackGroupArray(trackGroupArray); + Assertions.checkNotNull(callback).onPrepared(this); + } + + @Override + public void onContinueLoadingRequested(MediaPeriod ignored) { + Assertions.checkNotNull(callback).onContinueLoadingRequested(this); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MergingMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MergingMediaSource.java new file mode 100644 index 0000000000..ac2ef3c7da --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/MergingMediaSource.java @@ -0,0 +1,184 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; + +/** + * Merges multiple {@link MediaSource}s. + * + *

The {@link Timeline}s of the sources being merged must have the same number of periods. + */ +public final class MergingMediaSource extends CompositeMediaSource { + + /** + * Thrown when a {@link MergingMediaSource} cannot merge its sources. + */ + public static final class IllegalMergeException extends IOException { + + /** The reason the merge failed. One of {@link #REASON_PERIOD_COUNT_MISMATCH}. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({REASON_PERIOD_COUNT_MISMATCH}) + public @interface Reason {} + /** + * The sources have different period counts. + */ + public static final int REASON_PERIOD_COUNT_MISMATCH = 0; + + /** + * The reason the merge failed. + */ + @Reason public final int reason; + + /** + * @param reason The reason the merge failed. + */ + public IllegalMergeException(@Reason int reason) { + this.reason = reason; + } + + } + + private static final int PERIOD_COUNT_UNSET = -1; + + private final MediaSource[] mediaSources; + private final Timeline[] timelines; + private final ArrayList pendingTimelineSources; + private final CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory; + + private int periodCount; + @Nullable private IllegalMergeException mergeError; + + /** + * @param mediaSources The {@link MediaSource}s to merge. + */ + public MergingMediaSource(MediaSource... mediaSources) { + this(new DefaultCompositeSequenceableLoaderFactory(), mediaSources); + } + + /** + * @param compositeSequenceableLoaderFactory A factory to create composite + * {@link SequenceableLoader}s for when this media source loads data from multiple streams + * (video, audio etc...). + * @param mediaSources The {@link MediaSource}s to merge. + */ + public MergingMediaSource(CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory, + MediaSource... mediaSources) { + this.mediaSources = mediaSources; + this.compositeSequenceableLoaderFactory = compositeSequenceableLoaderFactory; + pendingTimelineSources = new ArrayList<>(Arrays.asList(mediaSources)); + periodCount = PERIOD_COUNT_UNSET; + timelines = new Timeline[mediaSources.length]; + } + + @Override + @Nullable + public Object getTag() { + return mediaSources.length > 0 ? mediaSources[0].getTag() : null; + } + + @Override + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + super.prepareSourceInternal(mediaTransferListener); + for (int i = 0; i < mediaSources.length; i++) { + prepareChildSource(i, mediaSources[i]); + } + } + + @Override + public void maybeThrowSourceInfoRefreshError() throws IOException { + if (mergeError != null) { + throw mergeError; + } + super.maybeThrowSourceInfoRefreshError(); + } + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + MediaPeriod[] periods = new MediaPeriod[mediaSources.length]; + int periodIndex = timelines[0].getIndexOfPeriod(id.periodUid); + for (int i = 0; i < periods.length; i++) { + MediaPeriodId childMediaPeriodId = + id.copyWithPeriodUid(timelines[i].getUidOfPeriod(periodIndex)); + periods[i] = mediaSources[i].createPeriod(childMediaPeriodId, allocator, startPositionUs); + } + return new MergingMediaPeriod(compositeSequenceableLoaderFactory, periods); + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + MergingMediaPeriod mergingPeriod = (MergingMediaPeriod) mediaPeriod; + for (int i = 0; i < mediaSources.length; i++) { + mediaSources[i].releasePeriod(mergingPeriod.periods[i]); + } + } + + @Override + protected void releaseSourceInternal() { + super.releaseSourceInternal(); + Arrays.fill(timelines, null); + periodCount = PERIOD_COUNT_UNSET; + mergeError = null; + pendingTimelineSources.clear(); + Collections.addAll(pendingTimelineSources, mediaSources); + } + + @Override + protected void onChildSourceInfoRefreshed( + Integer id, MediaSource mediaSource, Timeline timeline) { + if (mergeError == null) { + mergeError = checkTimelineMerges(timeline); + } + if (mergeError != null) { + return; + } + pendingTimelineSources.remove(mediaSource); + timelines[id] = timeline; + if (pendingTimelineSources.isEmpty()) { + refreshSourceInfo(timelines[0]); + } + } + + @Override + @Nullable + protected MediaPeriodId getMediaPeriodIdForChildMediaPeriodId( + Integer id, MediaPeriodId mediaPeriodId) { + return id == 0 ? mediaPeriodId : null; + } + + @Nullable + private IllegalMergeException checkTimelineMerges(Timeline timeline) { + if (periodCount == PERIOD_COUNT_UNSET) { + periodCount = timeline.getPeriodCount(); + } else if (timeline.getPeriodCount() != periodCount) { + return new IllegalMergeException(IllegalMergeException.REASON_PERIOD_COUNT_MISMATCH); + } + return null; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ProgressiveMediaPeriod.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ProgressiveMediaPeriod.java new file mode 100644 index 0000000000..4c62a73edb --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ProgressiveMediaPeriod.java @@ -0,0 +1,1162 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.net.Uri; +import android.os.Handler; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DefaultExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap.SeekPoints; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap.Unseekable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp3.Mp3Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.icy.IcyHeaders; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleQueue.UpstreamFormatChangedListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.LoadErrorAction; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.Loadable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.StatsDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ConditionVariable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.EOFException; +import java.io.IOException; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** A {@link MediaPeriod} that extracts data using an {@link Extractor}. */ +/* package */ final class ProgressiveMediaPeriod + implements MediaPeriod, + ExtractorOutput, + Loader.Callback, + Loader.ReleaseCallback, + UpstreamFormatChangedListener { + + /** + * Listener for information about the period. + */ + interface Listener { + + /** + * Called when the duration, the ability to seek within the period, or the categorization as + * live stream changes. + * + * @param durationUs The duration of the period, or {@link C#TIME_UNSET}. + * @param isSeekable Whether the period is seekable. + * @param isLive Whether the period is live. + */ + void onSourceInfoRefreshed(long durationUs, boolean isSeekable, boolean isLive); + } + + /** + * When the source's duration is unknown, it is calculated by adding this value to the largest + * sample timestamp seen when buffering completes. + */ + private static final long DEFAULT_LAST_SAMPLE_DURATION_US = 10000; + + private static final Map ICY_METADATA_HEADERS = createIcyMetadataHeaders(); + + private static final Format ICY_FORMAT = + Format.createSampleFormat("icy", MimeTypes.APPLICATION_ICY, Format.OFFSET_SAMPLE_RELATIVE); + + private final Uri uri; + private final DataSource dataSource; + private final DrmSessionManager drmSessionManager; + private final LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private final EventDispatcher eventDispatcher; + private final Listener listener; + private final Allocator allocator; + @Nullable private final String customCacheKey; + private final long continueLoadingCheckIntervalBytes; + private final Loader loader; + private final ExtractorHolder extractorHolder; + private final ConditionVariable loadCondition; + private final Runnable maybeFinishPrepareRunnable; + private final Runnable onContinueLoadingRequestedRunnable; + private final Handler handler; + + @Nullable private Callback callback; + @Nullable private SeekMap seekMap; + @Nullable private IcyHeaders icyHeaders; + private SampleQueue[] sampleQueues; + private TrackId[] sampleQueueTrackIds; + private boolean sampleQueuesBuilt; + private boolean prepared; + + @Nullable private PreparedState preparedState; + private boolean haveAudioVideoTracks; + private int dataType; + + private boolean seenFirstTrackSelection; + private boolean notifyDiscontinuity; + private boolean notifiedReadingStarted; + private int enabledTrackCount; + private long durationUs; + private long length; + private boolean isLive; + + private long lastSeekPositionUs; + private long pendingResetPositionUs; + private boolean pendingDeferredRetry; + + private int extractedSamplesCountAtStartOfLoad; + private boolean loadingFinished; + private boolean released; + + /** + * @param uri The {@link Uri} of the media stream. + * @param dataSource The data source to read the media. + * @param extractors The extractors to use to read the data source. + * @param loadErrorHandlingPolicy The {@link LoadErrorHandlingPolicy}. + * @param eventDispatcher A dispatcher to notify of events. + * @param listener A listener to notify when information about the period changes. + * @param allocator An {@link Allocator} from which to obtain media buffer allocations. + * @param customCacheKey A custom key that uniquely identifies the original stream. Used for cache + * indexing. May be null. + * @param continueLoadingCheckIntervalBytes The number of bytes that should be loaded between each + * invocation of {@link Callback#onContinueLoadingRequested(SequenceableLoader)}. + */ + // maybeFinishPrepare is not posted to the handler until initialization completes. + @SuppressWarnings({ + "nullness:argument.type.incompatible", + "nullness:methodref.receiver.bound.invalid" + }) + public ProgressiveMediaPeriod( + Uri uri, + DataSource dataSource, + Extractor[] extractors, + DrmSessionManager drmSessionManager, + LoadErrorHandlingPolicy loadErrorHandlingPolicy, + EventDispatcher eventDispatcher, + Listener listener, + Allocator allocator, + @Nullable String customCacheKey, + int continueLoadingCheckIntervalBytes) { + this.uri = uri; + this.dataSource = dataSource; + this.drmSessionManager = drmSessionManager; + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + this.eventDispatcher = eventDispatcher; + this.listener = listener; + this.allocator = allocator; + this.customCacheKey = customCacheKey; + this.continueLoadingCheckIntervalBytes = continueLoadingCheckIntervalBytes; + loader = new Loader("Loader:ProgressiveMediaPeriod"); + extractorHolder = new ExtractorHolder(extractors); + loadCondition = new ConditionVariable(); + maybeFinishPrepareRunnable = this::maybeFinishPrepare; + onContinueLoadingRequestedRunnable = + () -> { + if (!released) { + Assertions.checkNotNull(callback) + .onContinueLoadingRequested(ProgressiveMediaPeriod.this); + } + }; + handler = new Handler(); + sampleQueueTrackIds = new TrackId[0]; + sampleQueues = new SampleQueue[0]; + pendingResetPositionUs = C.TIME_UNSET; + length = C.LENGTH_UNSET; + durationUs = C.TIME_UNSET; + dataType = C.DATA_TYPE_MEDIA; + eventDispatcher.mediaPeriodCreated(); + } + + public void release() { + if (prepared) { + // Discard as much as we can synchronously. We only do this if we're prepared, since otherwise + // sampleQueues may still be being modified by the loading thread. + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.preRelease(); + } + } + loader.release(/* callback= */ this); + handler.removeCallbacksAndMessages(null); + callback = null; + released = true; + eventDispatcher.mediaPeriodReleased(); + } + + @Override + public void onLoaderReleased() { + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.release(); + } + extractorHolder.release(); + } + + @Override + public void prepare(Callback callback, long positionUs) { + this.callback = callback; + loadCondition.open(); + startLoading(); + } + + @Override + public void maybeThrowPrepareError() throws IOException { + maybeThrowError(); + if (loadingFinished && !prepared) { + throw new ParserException("Loading finished before preparation is complete."); + } + } + + @Override + public TrackGroupArray getTrackGroups() { + return getPreparedState().tracks; + } + + @Override + public long selectTracks( + @NullableType TrackSelection[] selections, + boolean[] mayRetainStreamFlags, + @NullableType SampleStream[] streams, + boolean[] streamResetFlags, + long positionUs) { + PreparedState preparedState = getPreparedState(); + TrackGroupArray tracks = preparedState.tracks; + boolean[] trackEnabledStates = preparedState.trackEnabledStates; + int oldEnabledTrackCount = enabledTrackCount; + // Deselect old tracks. + for (int i = 0; i < selections.length; i++) { + if (streams[i] != null && (selections[i] == null || !mayRetainStreamFlags[i])) { + int track = ((SampleStreamImpl) streams[i]).track; + Assertions.checkState(trackEnabledStates[track]); + enabledTrackCount--; + trackEnabledStates[track] = false; + streams[i] = null; + } + } + // We'll always need to seek if this is a first selection to a non-zero position, or if we're + // making a selection having previously disabled all tracks. + boolean seekRequired = seenFirstTrackSelection ? oldEnabledTrackCount == 0 : positionUs != 0; + // Select new tracks. + for (int i = 0; i < selections.length; i++) { + if (streams[i] == null && selections[i] != null) { + TrackSelection selection = selections[i]; + Assertions.checkState(selection.length() == 1); + Assertions.checkState(selection.getIndexInTrackGroup(0) == 0); + int track = tracks.indexOf(selection.getTrackGroup()); + Assertions.checkState(!trackEnabledStates[track]); + enabledTrackCount++; + trackEnabledStates[track] = true; + streams[i] = new SampleStreamImpl(track); + streamResetFlags[i] = true; + // If there's still a chance of avoiding a seek, try and seek within the sample queue. + if (!seekRequired) { + SampleQueue sampleQueue = sampleQueues[track]; + // A seek can be avoided if we're able to seek to the current playback position in the + // sample queue, or if we haven't read anything from the queue since the previous seek + // (this case is common for sparse tracks such as metadata tracks). In all other cases a + // seek is required. + seekRequired = + !sampleQueue.seekTo(positionUs, /* allowTimeBeyondBuffer= */ true) + && sampleQueue.getReadIndex() != 0; + } + } + } + if (enabledTrackCount == 0) { + pendingDeferredRetry = false; + notifyDiscontinuity = false; + if (loader.isLoading()) { + // Discard as much as we can synchronously. + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.discardToEnd(); + } + loader.cancelLoading(); + } else { + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.reset(); + } + } + } else if (seekRequired) { + positionUs = seekToUs(positionUs); + // We'll need to reset renderers consuming from all streams due to the seek. + for (int i = 0; i < streams.length; i++) { + if (streams[i] != null) { + streamResetFlags[i] = true; + } + } + } + seenFirstTrackSelection = true; + return positionUs; + } + + @Override + public void discardBuffer(long positionUs, boolean toKeyframe) { + if (isPendingReset()) { + return; + } + boolean[] trackEnabledStates = getPreparedState().trackEnabledStates; + int trackCount = sampleQueues.length; + for (int i = 0; i < trackCount; i++) { + sampleQueues[i].discardTo(positionUs, toKeyframe, trackEnabledStates[i]); + } + } + + @Override + public void reevaluateBuffer(long positionUs) { + // Do nothing. + } + + @Override + public boolean continueLoading(long playbackPositionUs) { + if (loadingFinished + || loader.hasFatalError() + || pendingDeferredRetry + || (prepared && enabledTrackCount == 0)) { + return false; + } + boolean continuedLoading = loadCondition.open(); + if (!loader.isLoading()) { + startLoading(); + continuedLoading = true; + } + return continuedLoading; + } + + @Override + public boolean isLoading() { + return loader.isLoading() && loadCondition.isOpen(); + } + + @Override + public long getNextLoadPositionUs() { + return enabledTrackCount == 0 ? C.TIME_END_OF_SOURCE : getBufferedPositionUs(); + } + + @Override + public long readDiscontinuity() { + if (!notifiedReadingStarted) { + eventDispatcher.readingStarted(); + notifiedReadingStarted = true; + } + if (notifyDiscontinuity + && (loadingFinished || getExtractedSamplesCount() > extractedSamplesCountAtStartOfLoad)) { + notifyDiscontinuity = false; + return lastSeekPositionUs; + } + return C.TIME_UNSET; + } + + @Override + public long getBufferedPositionUs() { + boolean[] trackIsAudioVideoFlags = getPreparedState().trackIsAudioVideoFlags; + if (loadingFinished) { + return C.TIME_END_OF_SOURCE; + } else if (isPendingReset()) { + return pendingResetPositionUs; + } + long largestQueuedTimestampUs = Long.MAX_VALUE; + if (haveAudioVideoTracks) { + // Ignore non-AV tracks, which may be sparse or poorly interleaved. + int trackCount = sampleQueues.length; + for (int i = 0; i < trackCount; i++) { + if (trackIsAudioVideoFlags[i] && !sampleQueues[i].isLastSampleQueued()) { + largestQueuedTimestampUs = Math.min(largestQueuedTimestampUs, + sampleQueues[i].getLargestQueuedTimestampUs()); + } + } + } + if (largestQueuedTimestampUs == Long.MAX_VALUE) { + largestQueuedTimestampUs = getLargestQueuedTimestampUs(); + } + return largestQueuedTimestampUs == Long.MIN_VALUE ? lastSeekPositionUs + : largestQueuedTimestampUs; + } + + @Override + public long seekToUs(long positionUs) { + PreparedState preparedState = getPreparedState(); + SeekMap seekMap = preparedState.seekMap; + boolean[] trackIsAudioVideoFlags = preparedState.trackIsAudioVideoFlags; + // Treat all seeks into non-seekable media as being to t=0. + positionUs = seekMap.isSeekable() ? positionUs : 0; + + notifyDiscontinuity = false; + lastSeekPositionUs = positionUs; + if (isPendingReset()) { + // A reset is already pending. We only need to update its position. + pendingResetPositionUs = positionUs; + return positionUs; + } + + // If we're not playing a live stream, try and seek within the buffer. + if (dataType != C.DATA_TYPE_MEDIA_PROGRESSIVE_LIVE + && seekInsideBufferUs(trackIsAudioVideoFlags, positionUs)) { + return positionUs; + } + + // We can't seek inside the buffer, and so need to reset. + pendingDeferredRetry = false; + pendingResetPositionUs = positionUs; + loadingFinished = false; + if (loader.isLoading()) { + loader.cancelLoading(); + } else { + loader.clearFatalError(); + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.reset(); + } + } + return positionUs; + } + + @Override + public long getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters) { + SeekMap seekMap = getPreparedState().seekMap; + if (!seekMap.isSeekable()) { + // Treat all seeks into non-seekable media as being to t=0. + return 0; + } + SeekPoints seekPoints = seekMap.getSeekPoints(positionUs); + return Util.resolveSeekPositionUs( + positionUs, seekParameters, seekPoints.first.timeUs, seekPoints.second.timeUs); + } + + // SampleStream methods. + + /* package */ boolean isReady(int track) { + return !suppressRead() && sampleQueues[track].isReady(loadingFinished); + } + + /* package */ void maybeThrowError(int sampleQueueIndex) throws IOException { + sampleQueues[sampleQueueIndex].maybeThrowError(); + maybeThrowError(); + } + + /* package */ void maybeThrowError() throws IOException { + loader.maybeThrowError(loadErrorHandlingPolicy.getMinimumLoadableRetryCount(dataType)); + } + + /* package */ int readData( + int sampleQueueIndex, + FormatHolder formatHolder, + DecoderInputBuffer buffer, + boolean formatRequired) { + if (suppressRead()) { + return C.RESULT_NOTHING_READ; + } + maybeNotifyDownstreamFormat(sampleQueueIndex); + int result = + sampleQueues[sampleQueueIndex].read( + formatHolder, buffer, formatRequired, loadingFinished, lastSeekPositionUs); + if (result == C.RESULT_NOTHING_READ) { + maybeStartDeferredRetry(sampleQueueIndex); + } + return result; + } + + /* package */ int skipData(int track, long positionUs) { + if (suppressRead()) { + return 0; + } + maybeNotifyDownstreamFormat(track); + SampleQueue sampleQueue = sampleQueues[track]; + int skipCount; + if (loadingFinished && positionUs > sampleQueue.getLargestQueuedTimestampUs()) { + skipCount = sampleQueue.advanceToEnd(); + } else { + skipCount = sampleQueue.advanceTo(positionUs); + } + if (skipCount == 0) { + maybeStartDeferredRetry(track); + } + return skipCount; + } + + private void maybeNotifyDownstreamFormat(int track) { + PreparedState preparedState = getPreparedState(); + boolean[] trackNotifiedDownstreamFormats = preparedState.trackNotifiedDownstreamFormats; + if (!trackNotifiedDownstreamFormats[track]) { + Format trackFormat = preparedState.tracks.get(track).getFormat(/* index= */ 0); + eventDispatcher.downstreamFormatChanged( + MimeTypes.getTrackType(trackFormat.sampleMimeType), + trackFormat, + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + lastSeekPositionUs); + trackNotifiedDownstreamFormats[track] = true; + } + } + + private void maybeStartDeferredRetry(int track) { + boolean[] trackIsAudioVideoFlags = getPreparedState().trackIsAudioVideoFlags; + if (!pendingDeferredRetry + || !trackIsAudioVideoFlags[track] + || sampleQueues[track].isReady(/* loadingFinished= */ false)) { + return; + } + pendingResetPositionUs = 0; + pendingDeferredRetry = false; + notifyDiscontinuity = true; + lastSeekPositionUs = 0; + extractedSamplesCountAtStartOfLoad = 0; + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.reset(); + } + Assertions.checkNotNull(callback).onContinueLoadingRequested(this); + } + + private boolean suppressRead() { + return notifyDiscontinuity || isPendingReset(); + } + + // Loader.Callback implementation. + + @Override + public void onLoadCompleted(ExtractingLoadable loadable, long elapsedRealtimeMs, + long loadDurationMs) { + if (durationUs == C.TIME_UNSET && seekMap != null) { + boolean isSeekable = seekMap.isSeekable(); + long largestQueuedTimestampUs = getLargestQueuedTimestampUs(); + durationUs = largestQueuedTimestampUs == Long.MIN_VALUE ? 0 + : largestQueuedTimestampUs + DEFAULT_LAST_SAMPLE_DURATION_US; + listener.onSourceInfoRefreshed(durationUs, isSeekable, isLive); + } + eventDispatcher.loadCompleted( + loadable.dataSpec, + loadable.dataSource.getLastOpenedUri(), + loadable.dataSource.getLastResponseHeaders(), + C.DATA_TYPE_MEDIA, + C.TRACK_TYPE_UNKNOWN, + /* trackFormat= */ null, + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + /* mediaStartTimeUs= */ loadable.seekTimeUs, + durationUs, + elapsedRealtimeMs, + loadDurationMs, + loadable.dataSource.getBytesRead()); + copyLengthFromLoader(loadable); + loadingFinished = true; + Assertions.checkNotNull(callback).onContinueLoadingRequested(this); + } + + @Override + public void onLoadCanceled(ExtractingLoadable loadable, long elapsedRealtimeMs, + long loadDurationMs, boolean released) { + eventDispatcher.loadCanceled( + loadable.dataSpec, + loadable.dataSource.getLastOpenedUri(), + loadable.dataSource.getLastResponseHeaders(), + C.DATA_TYPE_MEDIA, + C.TRACK_TYPE_UNKNOWN, + /* trackFormat= */ null, + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + /* mediaStartTimeUs= */ loadable.seekTimeUs, + durationUs, + elapsedRealtimeMs, + loadDurationMs, + loadable.dataSource.getBytesRead()); + if (!released) { + copyLengthFromLoader(loadable); + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.reset(); + } + if (enabledTrackCount > 0) { + Assertions.checkNotNull(callback).onContinueLoadingRequested(this); + } + } + } + + @Override + public LoadErrorAction onLoadError( + ExtractingLoadable loadable, + long elapsedRealtimeMs, + long loadDurationMs, + IOException error, + int errorCount) { + copyLengthFromLoader(loadable); + LoadErrorAction loadErrorAction; + long retryDelayMs = + loadErrorHandlingPolicy.getRetryDelayMsFor(dataType, loadDurationMs, error, errorCount); + if (retryDelayMs == C.TIME_UNSET) { + loadErrorAction = Loader.DONT_RETRY_FATAL; + } else /* the load should be retried */ { + int extractedSamplesCount = getExtractedSamplesCount(); + boolean madeProgress = extractedSamplesCount > extractedSamplesCountAtStartOfLoad; + loadErrorAction = + configureRetry(loadable, extractedSamplesCount) + ? Loader.createRetryAction(/* resetErrorCount= */ madeProgress, retryDelayMs) + : Loader.DONT_RETRY; + } + + eventDispatcher.loadError( + loadable.dataSpec, + loadable.dataSource.getLastOpenedUri(), + loadable.dataSource.getLastResponseHeaders(), + C.DATA_TYPE_MEDIA, + C.TRACK_TYPE_UNKNOWN, + /* trackFormat= */ null, + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + /* mediaStartTimeUs= */ loadable.seekTimeUs, + durationUs, + elapsedRealtimeMs, + loadDurationMs, + loadable.dataSource.getBytesRead(), + error, + !loadErrorAction.isRetry()); + return loadErrorAction; + } + + // ExtractorOutput implementation. Called by the loading thread. + + @Override + public TrackOutput track(int id, int type) { + return prepareTrackOutput(new TrackId(id, /* isIcyTrack= */ false)); + } + + @Override + public void endTracks() { + sampleQueuesBuilt = true; + handler.post(maybeFinishPrepareRunnable); + } + + @Override + public void seekMap(SeekMap seekMap) { + this.seekMap = icyHeaders == null ? seekMap : new Unseekable(/* durationUs */ C.TIME_UNSET); + handler.post(maybeFinishPrepareRunnable); + } + + // Icy metadata. Called by the loading thread. + + /* package */ TrackOutput icyTrack() { + return prepareTrackOutput(new TrackId(0, /* isIcyTrack= */ true)); + } + + // UpstreamFormatChangedListener implementation. Called by the loading thread. + + @Override + public void onUpstreamFormatChanged(Format format) { + handler.post(maybeFinishPrepareRunnable); + } + + // Internal methods. + + private TrackOutput prepareTrackOutput(TrackId id) { + int trackCount = sampleQueues.length; + for (int i = 0; i < trackCount; i++) { + if (id.equals(sampleQueueTrackIds[i])) { + return sampleQueues[i]; + } + } + SampleQueue trackOutput = new SampleQueue(allocator, drmSessionManager); + trackOutput.setUpstreamFormatChangeListener(this); + @NullableType + TrackId[] sampleQueueTrackIds = Arrays.copyOf(this.sampleQueueTrackIds, trackCount + 1); + sampleQueueTrackIds[trackCount] = id; + this.sampleQueueTrackIds = Util.castNonNullTypeArray(sampleQueueTrackIds); + @NullableType SampleQueue[] sampleQueues = Arrays.copyOf(this.sampleQueues, trackCount + 1); + sampleQueues[trackCount] = trackOutput; + this.sampleQueues = Util.castNonNullTypeArray(sampleQueues); + return trackOutput; + } + + private void maybeFinishPrepare() { + SeekMap seekMap = this.seekMap; + if (released || prepared || !sampleQueuesBuilt || seekMap == null) { + return; + } + for (SampleQueue sampleQueue : sampleQueues) { + if (sampleQueue.getUpstreamFormat() == null) { + return; + } + } + loadCondition.close(); + int trackCount = sampleQueues.length; + TrackGroup[] trackArray = new TrackGroup[trackCount]; + boolean[] trackIsAudioVideoFlags = new boolean[trackCount]; + durationUs = seekMap.getDurationUs(); + for (int i = 0; i < trackCount; i++) { + Format trackFormat = sampleQueues[i].getUpstreamFormat(); + String mimeType = trackFormat.sampleMimeType; + boolean isAudio = MimeTypes.isAudio(mimeType); + boolean isAudioVideo = isAudio || MimeTypes.isVideo(mimeType); + trackIsAudioVideoFlags[i] = isAudioVideo; + haveAudioVideoTracks |= isAudioVideo; + IcyHeaders icyHeaders = this.icyHeaders; + if (icyHeaders != null) { + if (isAudio || sampleQueueTrackIds[i].isIcyTrack) { + Metadata metadata = trackFormat.metadata; + trackFormat = + trackFormat.copyWithMetadata( + metadata == null + ? new Metadata(icyHeaders) + : metadata.copyWithAppendedEntries(icyHeaders)); + } + if (isAudio + && trackFormat.bitrate == Format.NO_VALUE + && icyHeaders.bitrate != Format.NO_VALUE) { + trackFormat = trackFormat.copyWithBitrate(icyHeaders.bitrate); + } + } + trackArray[i] = new TrackGroup(trackFormat); + } + isLive = length == C.LENGTH_UNSET && seekMap.getDurationUs() == C.TIME_UNSET; + dataType = isLive ? C.DATA_TYPE_MEDIA_PROGRESSIVE_LIVE : C.DATA_TYPE_MEDIA; + preparedState = + new PreparedState(seekMap, new TrackGroupArray(trackArray), trackIsAudioVideoFlags); + prepared = true; + listener.onSourceInfoRefreshed(durationUs, seekMap.isSeekable(), isLive); + Assertions.checkNotNull(callback).onPrepared(this); + } + + private PreparedState getPreparedState() { + return Assertions.checkNotNull(preparedState); + } + + private void copyLengthFromLoader(ExtractingLoadable loadable) { + if (length == C.LENGTH_UNSET) { + length = loadable.length; + } + } + + private void startLoading() { + ExtractingLoadable loadable = + new ExtractingLoadable( + uri, dataSource, extractorHolder, /* extractorOutput= */ this, loadCondition); + if (prepared) { + SeekMap seekMap = getPreparedState().seekMap; + Assertions.checkState(isPendingReset()); + if (durationUs != C.TIME_UNSET && pendingResetPositionUs > durationUs) { + loadingFinished = true; + pendingResetPositionUs = C.TIME_UNSET; + return; + } + loadable.setLoadPosition( + seekMap.getSeekPoints(pendingResetPositionUs).first.position, pendingResetPositionUs); + pendingResetPositionUs = C.TIME_UNSET; + } + extractedSamplesCountAtStartOfLoad = getExtractedSamplesCount(); + long elapsedRealtimeMs = + loader.startLoading( + loadable, this, loadErrorHandlingPolicy.getMinimumLoadableRetryCount(dataType)); + eventDispatcher.loadStarted( + loadable.dataSpec, + C.DATA_TYPE_MEDIA, + C.TRACK_TYPE_UNKNOWN, + /* trackFormat= */ null, + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + /* mediaStartTimeUs= */ loadable.seekTimeUs, + durationUs, + elapsedRealtimeMs); + } + + /** + * Called to configure a retry when a load error occurs. + * + * @param loadable The current loadable for which the error was encountered. + * @param currentExtractedSampleCount The current number of samples that have been extracted into + * the sample queues. + * @return Whether the loader should retry with the current loadable. False indicates a deferred + * retry. + */ + private boolean configureRetry(ExtractingLoadable loadable, int currentExtractedSampleCount) { + if (length != C.LENGTH_UNSET + || (seekMap != null && seekMap.getDurationUs() != C.TIME_UNSET)) { + // We're playing an on-demand stream. Resume the current loadable, which will + // request data starting from the point it left off. + extractedSamplesCountAtStartOfLoad = currentExtractedSampleCount; + return true; + } else if (prepared && !suppressRead()) { + // We're playing a stream of unknown length and duration. Assume it's live, and therefore that + // the data at the uri is a continuously shifting window of the latest available media. For + // this case there's no way to continue loading from where a previous load finished, so it's + // necessary to load from the start whenever commencing a new load. Deferring the retry until + // we run out of buffered data makes for a much better user experience. See: + // https://github.com/google/ExoPlayer/issues/1606. + // Note that the suppressRead() check means only a single deferred retry can occur without + // progress being made. Any subsequent failures without progress will go through the else + // block below. + pendingDeferredRetry = true; + return false; + } else { + // This is the same case as above, except in this case there's no value in deferring the retry + // because there's no buffered data to be read. This case also covers an on-demand stream with + // unknown length that has yet to be prepared. This case cannot be disambiguated from the live + // stream case, so we have no option but to load from the start. + notifyDiscontinuity = prepared; + lastSeekPositionUs = 0; + extractedSamplesCountAtStartOfLoad = 0; + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.reset(); + } + loadable.setLoadPosition(0, 0); + return true; + } + } + + /** + * Attempts to seek to the specified position within the sample queues. + * + * @param trackIsAudioVideoFlags Whether each track is audio/video. + * @param positionUs The seek position in microseconds. + * @return Whether the in-buffer seek was successful. + */ + private boolean seekInsideBufferUs(boolean[] trackIsAudioVideoFlags, long positionUs) { + int trackCount = sampleQueues.length; + for (int i = 0; i < trackCount; i++) { + SampleQueue sampleQueue = sampleQueues[i]; + boolean seekInsideQueue = sampleQueue.seekTo(positionUs, /* allowTimeBeyondBuffer= */ false); + // If we have AV tracks then an in-buffer seek is successful if the seek into every AV queue + // is successful. We ignore whether seeks within non-AV queues are successful in this case, as + // they may be sparse or poorly interleaved. If we only have non-AV tracks then a seek is + // successful only if the seek into every queue succeeds. + if (!seekInsideQueue && (trackIsAudioVideoFlags[i] || !haveAudioVideoTracks)) { + return false; + } + } + return true; + } + + private int getExtractedSamplesCount() { + int extractedSamplesCount = 0; + for (SampleQueue sampleQueue : sampleQueues) { + extractedSamplesCount += sampleQueue.getWriteIndex(); + } + return extractedSamplesCount; + } + + private long getLargestQueuedTimestampUs() { + long largestQueuedTimestampUs = Long.MIN_VALUE; + for (SampleQueue sampleQueue : sampleQueues) { + largestQueuedTimestampUs = Math.max(largestQueuedTimestampUs, + sampleQueue.getLargestQueuedTimestampUs()); + } + return largestQueuedTimestampUs; + } + + private boolean isPendingReset() { + return pendingResetPositionUs != C.TIME_UNSET; + } + + private final class SampleStreamImpl implements SampleStream { + + private final int track; + + public SampleStreamImpl(int track) { + this.track = track; + } + + @Override + public boolean isReady() { + return ProgressiveMediaPeriod.this.isReady(track); + } + + @Override + public void maybeThrowError() throws IOException { + ProgressiveMediaPeriod.this.maybeThrowError(track); + } + + @Override + public int readData(FormatHolder formatHolder, DecoderInputBuffer buffer, + boolean formatRequired) { + return ProgressiveMediaPeriod.this.readData(track, formatHolder, buffer, formatRequired); + } + + @Override + public int skipData(long positionUs) { + return ProgressiveMediaPeriod.this.skipData(track, positionUs); + } + + } + + /** Loads the media stream and extracts sample data from it. */ + /* package */ final class ExtractingLoadable implements Loadable, IcyDataSource.Listener { + + private final Uri uri; + private final StatsDataSource dataSource; + private final ExtractorHolder extractorHolder; + private final ExtractorOutput extractorOutput; + private final ConditionVariable loadCondition; + private final PositionHolder positionHolder; + + private volatile boolean loadCanceled; + + private boolean pendingExtractorSeek; + private long seekTimeUs; + private DataSpec dataSpec; + private long length; + @Nullable private TrackOutput icyTrackOutput; + private boolean seenIcyMetadata; + + @SuppressWarnings("method.invocation.invalid") + public ExtractingLoadable( + Uri uri, + DataSource dataSource, + ExtractorHolder extractorHolder, + ExtractorOutput extractorOutput, + ConditionVariable loadCondition) { + this.uri = uri; + this.dataSource = new StatsDataSource(dataSource); + this.extractorHolder = extractorHolder; + this.extractorOutput = extractorOutput; + this.loadCondition = loadCondition; + this.positionHolder = new PositionHolder(); + this.pendingExtractorSeek = true; + this.length = C.LENGTH_UNSET; + dataSpec = buildDataSpec(/* position= */ 0); + } + + // Loadable implementation. + + @Override + public void cancelLoad() { + loadCanceled = true; + } + + @Override + public void load() throws IOException, InterruptedException { + int result = Extractor.RESULT_CONTINUE; + while (result == Extractor.RESULT_CONTINUE && !loadCanceled) { + ExtractorInput input = null; + try { + long position = positionHolder.position; + dataSpec = buildDataSpec(position); + length = dataSource.open(dataSpec); + if (length != C.LENGTH_UNSET) { + length += position; + } + Uri uri = Assertions.checkNotNull(dataSource.getUri()); + icyHeaders = IcyHeaders.parse(dataSource.getResponseHeaders()); + DataSource extractorDataSource = dataSource; + if (icyHeaders != null && icyHeaders.metadataInterval != C.LENGTH_UNSET) { + extractorDataSource = new IcyDataSource(dataSource, icyHeaders.metadataInterval, this); + icyTrackOutput = icyTrack(); + icyTrackOutput.format(ICY_FORMAT); + } + input = new DefaultExtractorInput(extractorDataSource, position, length); + Extractor extractor = extractorHolder.selectExtractor(input, extractorOutput, uri); + + // MP3 live streams commonly have seekable metadata, despite being unseekable. + if (icyHeaders != null && extractor instanceof Mp3Extractor) { + ((Mp3Extractor) extractor).disableSeeking(); + } + + if (pendingExtractorSeek) { + extractor.seek(position, seekTimeUs); + pendingExtractorSeek = false; + } + while (result == Extractor.RESULT_CONTINUE && !loadCanceled) { + loadCondition.block(); + result = extractor.read(input, positionHolder); + if (input.getPosition() > position + continueLoadingCheckIntervalBytes) { + position = input.getPosition(); + loadCondition.close(); + handler.post(onContinueLoadingRequestedRunnable); + } + } + } finally { + if (result == Extractor.RESULT_SEEK) { + result = Extractor.RESULT_CONTINUE; + } else if (input != null) { + positionHolder.position = input.getPosition(); + } + Util.closeQuietly(dataSource); + } + } + } + + // IcyDataSource.Listener + + @Override + public void onIcyMetadata(ParsableByteArray metadata) { + // Always output the first ICY metadata at the start time. This helps minimize any delay + // between the start of playback and the first ICY metadata event. + long timeUs = + !seenIcyMetadata ? seekTimeUs : Math.max(getLargestQueuedTimestampUs(), seekTimeUs); + int length = metadata.bytesLeft(); + TrackOutput icyTrackOutput = Assertions.checkNotNull(this.icyTrackOutput); + icyTrackOutput.sampleData(metadata, length); + icyTrackOutput.sampleMetadata( + timeUs, C.BUFFER_FLAG_KEY_FRAME, length, /* offset= */ 0, /* encryptionData= */ null); + seenIcyMetadata = true; + } + + // Internal methods. + + private DataSpec buildDataSpec(long position) { + // Disable caching if the content length cannot be resolved, since this is indicative of a + // progressive live stream. + return new DataSpec( + uri, + position, + C.LENGTH_UNSET, + customCacheKey, + DataSpec.FLAG_DONT_CACHE_IF_LENGTH_UNKNOWN | DataSpec.FLAG_ALLOW_CACHE_FRAGMENTATION, + ICY_METADATA_HEADERS); + } + + private void setLoadPosition(long position, long timeUs) { + positionHolder.position = position; + seekTimeUs = timeUs; + pendingExtractorSeek = true; + seenIcyMetadata = false; + } + } + + /** Stores a list of extractors and a selected extractor when the format has been detected. */ + private static final class ExtractorHolder { + + private final Extractor[] extractors; + + @Nullable private Extractor extractor; + + /** + * Creates a holder that will select an extractor and initialize it using the specified output. + * + * @param extractors One or more extractors to choose from. + */ + public ExtractorHolder(Extractor[] extractors) { + this.extractors = extractors; + } + + /** + * Returns an initialized extractor for reading {@code input}, and returns the same extractor on + * later calls. + * + * @param input The {@link ExtractorInput} from which data should be read. + * @param output The {@link ExtractorOutput} that will be used to initialize the selected + * extractor. + * @param uri The {@link Uri} of the data. + * @return An initialized extractor for reading {@code input}. + * @throws UnrecognizedInputFormatException Thrown if the input format could not be detected. + * @throws IOException Thrown if the input could not be read. + * @throws InterruptedException Thrown if the thread was interrupted. + */ + public Extractor selectExtractor(ExtractorInput input, ExtractorOutput output, Uri uri) + throws IOException, InterruptedException { + if (extractor != null) { + return extractor; + } + if (extractors.length == 1) { + this.extractor = extractors[0]; + } else { + for (Extractor extractor : extractors) { + try { + if (extractor.sniff(input)) { + this.extractor = extractor; + break; + } + } catch (EOFException e) { + // Do nothing. + } finally { + input.resetPeekPosition(); + } + } + if (extractor == null) { + throw new UnrecognizedInputFormatException( + "None of the available extractors (" + + Util.getCommaDelimitedSimpleClassNames(extractors) + + ") could read the stream.", + uri); + } + } + extractor.init(output); + return extractor; + } + + public void release() { + if (extractor != null) { + extractor.release(); + extractor = null; + } + } + } + + /** Stores state that is initialized when preparation completes. */ + private static final class PreparedState { + + public final SeekMap seekMap; + public final TrackGroupArray tracks; + public final boolean[] trackIsAudioVideoFlags; + public final boolean[] trackEnabledStates; + public final boolean[] trackNotifiedDownstreamFormats; + + public PreparedState( + SeekMap seekMap, TrackGroupArray tracks, boolean[] trackIsAudioVideoFlags) { + this.seekMap = seekMap; + this.tracks = tracks; + this.trackIsAudioVideoFlags = trackIsAudioVideoFlags; + this.trackEnabledStates = new boolean[tracks.length]; + this.trackNotifiedDownstreamFormats = new boolean[tracks.length]; + } + } + + /** Identifies a track. */ + private static final class TrackId { + + public final int id; + public final boolean isIcyTrack; + + public TrackId(int id, boolean isIcyTrack) { + this.id = id; + this.isIcyTrack = isIcyTrack; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + TrackId other = (TrackId) obj; + return id == other.id && isIcyTrack == other.isIcyTrack; + } + + @Override + public int hashCode() { + return 31 * id + (isIcyTrack ? 1 : 0); + } + } + + private static Map createIcyMetadataHeaders() { + Map headers = new HashMap<>(); + headers.put( + IcyHeaders.REQUEST_HEADER_ENABLE_METADATA_NAME, + IcyHeaders.REQUEST_HEADER_ENABLE_METADATA_VALUE); + return Collections.unmodifiableMap(headers); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ProgressiveMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ProgressiveMediaSource.java new file mode 100644 index 0000000000..bed34a354b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ProgressiveMediaSource.java @@ -0,0 +1,327 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DefaultExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorsFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultLoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; + +/** + * Provides one period that loads data from a {@link Uri} and extracted using an {@link Extractor}. + * + *

If the possible input stream container formats are known, pass a factory that instantiates + * extractors for them to the constructor. Otherwise, pass a {@link DefaultExtractorsFactory} to use + * the default extractors. When reading a new stream, the first {@link Extractor} in the array of + * extractors created by the factory that returns {@code true} from {@link Extractor#sniff} will be + * used to extract samples from the input stream. + * + *

Note that the built-in extractor for FLV streams does not support seeking. + */ +public final class ProgressiveMediaSource extends BaseMediaSource + implements ProgressiveMediaPeriod.Listener { + + /** Factory for {@link ProgressiveMediaSource}s. */ + public static final class Factory implements MediaSourceFactory { + + private final DataSource.Factory dataSourceFactory; + + private ExtractorsFactory extractorsFactory; + @Nullable private String customCacheKey; + @Nullable private Object tag; + private DrmSessionManager drmSessionManager; + private LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private int continueLoadingCheckIntervalBytes; + private boolean isCreateCalled; + + /** + * Creates a new factory for {@link ProgressiveMediaSource}s, using the extractors provided by + * {@link DefaultExtractorsFactory}. + * + * @param dataSourceFactory A factory for {@link DataSource}s to read the media. + */ + public Factory(DataSource.Factory dataSourceFactory) { + this(dataSourceFactory, new DefaultExtractorsFactory()); + } + + /** + * Creates a new factory for {@link ProgressiveMediaSource}s. + * + * @param dataSourceFactory A factory for {@link DataSource}s to read the media. + * @param extractorsFactory A factory for extractors used to extract media from its container. + */ + public Factory(DataSource.Factory dataSourceFactory, ExtractorsFactory extractorsFactory) { + this.dataSourceFactory = dataSourceFactory; + this.extractorsFactory = extractorsFactory; + drmSessionManager = DrmSessionManager.getDummyDrmSessionManager(); + loadErrorHandlingPolicy = new DefaultLoadErrorHandlingPolicy(); + continueLoadingCheckIntervalBytes = DEFAULT_LOADING_CHECK_INTERVAL_BYTES; + } + + /** + * Sets the factory for {@link Extractor}s to process the media stream. The default value is an + * instance of {@link DefaultExtractorsFactory}. + * + * @param extractorsFactory A factory for {@link Extractor}s to process the media stream. If the + * possible formats are known, pass a factory that instantiates extractors for those + * formats. + * @return This factory, for convenience. + * @throws IllegalStateException If {@link #createMediaSource(Uri)} has already been called. + * @deprecated Pass the {@link ExtractorsFactory} via {@link #Factory(DataSource.Factory, + * ExtractorsFactory)}. This is necessary so that proguard can treat the default extractors + * factory as unused. + */ + @Deprecated + public Factory setExtractorsFactory(ExtractorsFactory extractorsFactory) { + Assertions.checkState(!isCreateCalled); + this.extractorsFactory = extractorsFactory; + return this; + } + + /** + * Sets the custom key that uniquely identifies the original stream. Used for cache indexing. + * The default value is {@code null}. + * + * @param customCacheKey A custom key that uniquely identifies the original stream. Used for + * cache indexing. + * @return This factory, for convenience. + * @throws IllegalStateException If {@link #createMediaSource(Uri)} has already been called. + */ + public Factory setCustomCacheKey(@Nullable String customCacheKey) { + Assertions.checkState(!isCreateCalled); + this.customCacheKey = customCacheKey; + return this; + } + + /** + * Sets a tag for the media source which will be published in the {@link + * com.google.android.exoplayer2.Timeline} of the source as {@link + * com.google.android.exoplayer2.Timeline.Window#tag}. + * + * @param tag A tag for the media source. + * @return This factory, for convenience. + * @throws IllegalStateException If {@link #createMediaSource(Uri)} has already been called. + */ + public Factory setTag(Object tag) { + Assertions.checkState(!isCreateCalled); + this.tag = tag; + return this; + } + + /** + * Sets the {@link LoadErrorHandlingPolicy}. The default value is created by calling {@link + * DefaultLoadErrorHandlingPolicy#DefaultLoadErrorHandlingPolicy()}. + * + * @param loadErrorHandlingPolicy A {@link LoadErrorHandlingPolicy}. + * @return This factory, for convenience. + * @throws IllegalStateException If {@link #createMediaSource(Uri)} has already been called. + */ + public Factory setLoadErrorHandlingPolicy(LoadErrorHandlingPolicy loadErrorHandlingPolicy) { + Assertions.checkState(!isCreateCalled); + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + return this; + } + + /** + * Sets the number of bytes that should be loaded between each invocation of {@link + * MediaPeriod.Callback#onContinueLoadingRequested(SequenceableLoader)}. The default value is + * {@link #DEFAULT_LOADING_CHECK_INTERVAL_BYTES}. + * + * @param continueLoadingCheckIntervalBytes The number of bytes that should be loaded between + * each invocation of {@link + * MediaPeriod.Callback#onContinueLoadingRequested(SequenceableLoader)}. + * @return This factory, for convenience. + * @throws IllegalStateException If {@link #createMediaSource(Uri)} has already been called. + */ + public Factory setContinueLoadingCheckIntervalBytes(int continueLoadingCheckIntervalBytes) { + Assertions.checkState(!isCreateCalled); + this.continueLoadingCheckIntervalBytes = continueLoadingCheckIntervalBytes; + return this; + } + + /** + * Sets the {@link DrmSessionManager} to use for acquiring {@link DrmSession DrmSessions}. The + * default value is {@link DrmSessionManager#DUMMY}. + * + * @param drmSessionManager The {@link DrmSessionManager}. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + @Override + public Factory setDrmSessionManager(DrmSessionManager drmSessionManager) { + Assertions.checkState(!isCreateCalled); + this.drmSessionManager = drmSessionManager; + return this; + } + + /** + * Returns a new {@link ProgressiveMediaSource} using the current parameters. + * + * @param uri The {@link Uri}. + * @return The new {@link ProgressiveMediaSource}. + */ + @Override + public ProgressiveMediaSource createMediaSource(Uri uri) { + isCreateCalled = true; + return new ProgressiveMediaSource( + uri, + dataSourceFactory, + extractorsFactory, + drmSessionManager, + loadErrorHandlingPolicy, + customCacheKey, + continueLoadingCheckIntervalBytes, + tag); + } + + @Override + public int[] getSupportedTypes() { + return new int[] {C.TYPE_OTHER}; + } + } + + /** + * The default number of bytes that should be loaded between each each invocation of {@link + * MediaPeriod.Callback#onContinueLoadingRequested(SequenceableLoader)}. + */ + public static final int DEFAULT_LOADING_CHECK_INTERVAL_BYTES = 1024 * 1024; + + private final Uri uri; + private final DataSource.Factory dataSourceFactory; + private final ExtractorsFactory extractorsFactory; + private final DrmSessionManager drmSessionManager; + private final LoadErrorHandlingPolicy loadableLoadErrorHandlingPolicy; + @Nullable private final String customCacheKey; + private final int continueLoadingCheckIntervalBytes; + @Nullable private final Object tag; + + private long timelineDurationUs; + private boolean timelineIsSeekable; + private boolean timelineIsLive; + @Nullable private TransferListener transferListener; + + // TODO: Make private when ExtractorMediaSource is deleted. + /* package */ ProgressiveMediaSource( + Uri uri, + DataSource.Factory dataSourceFactory, + ExtractorsFactory extractorsFactory, + DrmSessionManager drmSessionManager, + LoadErrorHandlingPolicy loadableLoadErrorHandlingPolicy, + @Nullable String customCacheKey, + int continueLoadingCheckIntervalBytes, + @Nullable Object tag) { + this.uri = uri; + this.dataSourceFactory = dataSourceFactory; + this.extractorsFactory = extractorsFactory; + this.drmSessionManager = drmSessionManager; + this.loadableLoadErrorHandlingPolicy = loadableLoadErrorHandlingPolicy; + this.customCacheKey = customCacheKey; + this.continueLoadingCheckIntervalBytes = continueLoadingCheckIntervalBytes; + this.timelineDurationUs = C.TIME_UNSET; + this.tag = tag; + } + + @Override + @Nullable + public Object getTag() { + return tag; + } + + @Override + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + transferListener = mediaTransferListener; + drmSessionManager.prepare(); + notifySourceInfoRefreshed(timelineDurationUs, timelineIsSeekable, timelineIsLive); + } + + @Override + public void maybeThrowSourceInfoRefreshError() throws IOException { + // Do nothing. + } + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + DataSource dataSource = dataSourceFactory.createDataSource(); + if (transferListener != null) { + dataSource.addTransferListener(transferListener); + } + return new ProgressiveMediaPeriod( + uri, + dataSource, + extractorsFactory.createExtractors(), + drmSessionManager, + loadableLoadErrorHandlingPolicy, + createEventDispatcher(id), + this, + allocator, + customCacheKey, + continueLoadingCheckIntervalBytes); + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + ((ProgressiveMediaPeriod) mediaPeriod).release(); + } + + @Override + protected void releaseSourceInternal() { + drmSessionManager.release(); + } + + // ProgressiveMediaPeriod.Listener implementation. + + @Override + public void onSourceInfoRefreshed(long durationUs, boolean isSeekable, boolean isLive) { + // If we already have the duration from a previous source info refresh, use it. + durationUs = durationUs == C.TIME_UNSET ? timelineDurationUs : durationUs; + if (timelineDurationUs == durationUs + && timelineIsSeekable == isSeekable + && timelineIsLive == isLive) { + // Suppress no-op source info changes. + return; + } + notifySourceInfoRefreshed(durationUs, isSeekable, isLive); + } + + // Internal methods. + + private void notifySourceInfoRefreshed(long durationUs, boolean isSeekable, boolean isLive) { + timelineDurationUs = durationUs; + timelineIsSeekable = isSeekable; + timelineIsLive = isLive; + // TODO: Split up isDynamic into multiple fields to indicate which values may change. Then + // indicate that the duration may change until it's known. See [internal: b/69703223]. + refreshSourceInfo( + new SinglePeriodTimeline( + timelineDurationUs, + timelineIsSeekable, + /* isDynamic= */ false, + /* isLive= */ timelineIsLive, + /* manifest= */ null, + tag)); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleDataQueue.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleDataQueue.java new file mode 100644 index 0000000000..81933a468d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleDataQueue.java @@ -0,0 +1,472 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.CryptoInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput.CryptoData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleQueue.SampleExtrasHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocation; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.EOFException; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.util.Arrays; + +/** A queue of media sample data. */ +/* package */ class SampleDataQueue { + + private static final int INITIAL_SCRATCH_SIZE = 32; + + private final Allocator allocator; + private final int allocationLength; + private final ParsableByteArray scratch; + + // References into the linked list of allocations. + private AllocationNode firstAllocationNode; + private AllocationNode readAllocationNode; + private AllocationNode writeAllocationNode; + + // Accessed only by the loading thread (or the consuming thread when there is no loading thread). + private long totalBytesWritten; + + public SampleDataQueue(Allocator allocator) { + this.allocator = allocator; + allocationLength = allocator.getIndividualAllocationLength(); + scratch = new ParsableByteArray(INITIAL_SCRATCH_SIZE); + firstAllocationNode = new AllocationNode(/* startPosition= */ 0, allocationLength); + readAllocationNode = firstAllocationNode; + writeAllocationNode = firstAllocationNode; + } + + // Called by the consuming thread, but only when there is no loading thread. + + /** Clears all sample data. */ + public void reset() { + clearAllocationNodes(firstAllocationNode); + firstAllocationNode = new AllocationNode(0, allocationLength); + readAllocationNode = firstAllocationNode; + writeAllocationNode = firstAllocationNode; + totalBytesWritten = 0; + allocator.trim(); + } + + /** + * Discards sample data bytes from the write side of the queue. + * + * @param totalBytesWritten The reduced total number of bytes written after the samples have been + * discarded, or 0 if the queue is now empty. + */ + public void discardUpstreamSampleBytes(long totalBytesWritten) { + this.totalBytesWritten = totalBytesWritten; + if (this.totalBytesWritten == 0 + || this.totalBytesWritten == firstAllocationNode.startPosition) { + clearAllocationNodes(firstAllocationNode); + firstAllocationNode = new AllocationNode(this.totalBytesWritten, allocationLength); + readAllocationNode = firstAllocationNode; + writeAllocationNode = firstAllocationNode; + } else { + // Find the last node containing at least 1 byte of data that we need to keep. + AllocationNode lastNodeToKeep = firstAllocationNode; + while (this.totalBytesWritten > lastNodeToKeep.endPosition) { + lastNodeToKeep = lastNodeToKeep.next; + } + // Discard all subsequent nodes. + AllocationNode firstNodeToDiscard = lastNodeToKeep.next; + clearAllocationNodes(firstNodeToDiscard); + // Reset the successor of the last node to be an uninitialized node. + lastNodeToKeep.next = new AllocationNode(lastNodeToKeep.endPosition, allocationLength); + // Update writeAllocationNode and readAllocationNode as necessary. + writeAllocationNode = + this.totalBytesWritten == lastNodeToKeep.endPosition + ? lastNodeToKeep.next + : lastNodeToKeep; + if (readAllocationNode == firstNodeToDiscard) { + readAllocationNode = lastNodeToKeep.next; + } + } + } + + // Called by the consuming thread. + + /** Rewinds the read position to the first sample in the queue. */ + public void rewind() { + readAllocationNode = firstAllocationNode; + } + + /** + * Reads data from the rolling buffer to populate a decoder input buffer. + * + * @param buffer The buffer to populate. + * @param extrasHolder The extras holder whose offset should be read and subsequently adjusted. + */ + public void readToBuffer(DecoderInputBuffer buffer, SampleExtrasHolder extrasHolder) { + // Read encryption data if the sample is encrypted. + if (buffer.isEncrypted()) { + readEncryptionData(buffer, extrasHolder); + } + // Read sample data, extracting supplemental data into a separate buffer if needed. + if (buffer.hasSupplementalData()) { + // If there is supplemental data, the sample data is prefixed by its size. + scratch.reset(4); + readData(extrasHolder.offset, scratch.data, 4); + int sampleSize = scratch.readUnsignedIntToInt(); + extrasHolder.offset += 4; + extrasHolder.size -= 4; + + // Write the sample data. + buffer.ensureSpaceForWrite(sampleSize); + readData(extrasHolder.offset, buffer.data, sampleSize); + extrasHolder.offset += sampleSize; + extrasHolder.size -= sampleSize; + + // Write the remaining data as supplemental data. + buffer.resetSupplementalData(extrasHolder.size); + readData(extrasHolder.offset, buffer.supplementalData, extrasHolder.size); + } else { + // Write the sample data. + buffer.ensureSpaceForWrite(extrasHolder.size); + readData(extrasHolder.offset, buffer.data, extrasHolder.size); + } + } + + /** + * Advances the read position to the specified absolute position. + * + * @param absolutePosition The new absolute read position. May be {@link C#POSITION_UNSET}, in + * which case calling this method is a no-op. + */ + public void discardDownstreamTo(long absolutePosition) { + if (absolutePosition == C.POSITION_UNSET) { + return; + } + while (absolutePosition >= firstAllocationNode.endPosition) { + // Advance firstAllocationNode to the specified absolute position. Also clear nodes that are + // advanced past, and return their underlying allocations to the allocator. + allocator.release(firstAllocationNode.allocation); + firstAllocationNode = firstAllocationNode.clear(); + } + if (readAllocationNode.startPosition < firstAllocationNode.startPosition) { + // We discarded the node referenced by readAllocationNode. We need to advance it to the first + // remaining node. + readAllocationNode = firstAllocationNode; + } + } + + // Called by the loading thread. + + public long getTotalBytesWritten() { + return totalBytesWritten; + } + + public int sampleData(ExtractorInput input, int length, boolean allowEndOfInput) + throws IOException, InterruptedException { + length = preAppend(length); + int bytesAppended = + input.read( + writeAllocationNode.allocation.data, + writeAllocationNode.translateOffset(totalBytesWritten), + length); + if (bytesAppended == C.RESULT_END_OF_INPUT) { + if (allowEndOfInput) { + return C.RESULT_END_OF_INPUT; + } + throw new EOFException(); + } + postAppend(bytesAppended); + return bytesAppended; + } + + public void sampleData(ParsableByteArray buffer, int length) { + while (length > 0) { + int bytesAppended = preAppend(length); + buffer.readBytes( + writeAllocationNode.allocation.data, + writeAllocationNode.translateOffset(totalBytesWritten), + bytesAppended); + length -= bytesAppended; + postAppend(bytesAppended); + } + } + + // Private methods. + + /** + * Reads encryption data for the current sample. + * + *

The encryption data is written into {@link DecoderInputBuffer#cryptoInfo}, and {@link + * SampleExtrasHolder#size} is adjusted to subtract the number of bytes that were read. The same + * value is added to {@link SampleExtrasHolder#offset}. + * + * @param buffer The buffer into which the encryption data should be written. + * @param extrasHolder The extras holder whose offset should be read and subsequently adjusted. + */ + private void readEncryptionData(DecoderInputBuffer buffer, SampleExtrasHolder extrasHolder) { + long offset = extrasHolder.offset; + + // Read the signal byte. + scratch.reset(1); + readData(offset, scratch.data, 1); + offset++; + byte signalByte = scratch.data[0]; + boolean subsampleEncryption = (signalByte & 0x80) != 0; + int ivSize = signalByte & 0x7F; + + // Read the initialization vector. + CryptoInfo cryptoInfo = buffer.cryptoInfo; + if (cryptoInfo.iv == null) { + cryptoInfo.iv = new byte[16]; + } else { + // Zero out cryptoInfo.iv so that if ivSize < 16, the remaining bytes are correctly set to 0. + Arrays.fill(cryptoInfo.iv, (byte) 0); + } + readData(offset, cryptoInfo.iv, ivSize); + offset += ivSize; + + // Read the subsample count, if present. + int subsampleCount; + if (subsampleEncryption) { + scratch.reset(2); + readData(offset, scratch.data, 2); + offset += 2; + subsampleCount = scratch.readUnsignedShort(); + } else { + subsampleCount = 1; + } + + // Write the clear and encrypted subsample sizes. + @Nullable int[] clearDataSizes = cryptoInfo.numBytesOfClearData; + if (clearDataSizes == null || clearDataSizes.length < subsampleCount) { + clearDataSizes = new int[subsampleCount]; + } + @Nullable int[] encryptedDataSizes = cryptoInfo.numBytesOfEncryptedData; + if (encryptedDataSizes == null || encryptedDataSizes.length < subsampleCount) { + encryptedDataSizes = new int[subsampleCount]; + } + if (subsampleEncryption) { + int subsampleDataLength = 6 * subsampleCount; + scratch.reset(subsampleDataLength); + readData(offset, scratch.data, subsampleDataLength); + offset += subsampleDataLength; + scratch.setPosition(0); + for (int i = 0; i < subsampleCount; i++) { + clearDataSizes[i] = scratch.readUnsignedShort(); + encryptedDataSizes[i] = scratch.readUnsignedIntToInt(); + } + } else { + clearDataSizes[0] = 0; + encryptedDataSizes[0] = extrasHolder.size - (int) (offset - extrasHolder.offset); + } + + // Populate the cryptoInfo. + CryptoData cryptoData = extrasHolder.cryptoData; + cryptoInfo.set( + subsampleCount, + clearDataSizes, + encryptedDataSizes, + cryptoData.encryptionKey, + cryptoInfo.iv, + cryptoData.cryptoMode, + cryptoData.encryptedBlocks, + cryptoData.clearBlocks); + + // Adjust the offset and size to take into account the bytes read. + int bytesRead = (int) (offset - extrasHolder.offset); + extrasHolder.offset += bytesRead; + extrasHolder.size -= bytesRead; + } + + /** + * Reads data from the front of the rolling buffer. + * + * @param absolutePosition The absolute position from which data should be read. + * @param target The buffer into which data should be written. + * @param length The number of bytes to read. + */ + private void readData(long absolutePosition, ByteBuffer target, int length) { + advanceReadTo(absolutePosition); + int remaining = length; + while (remaining > 0) { + int toCopy = Math.min(remaining, (int) (readAllocationNode.endPosition - absolutePosition)); + Allocation allocation = readAllocationNode.allocation; + target.put(allocation.data, readAllocationNode.translateOffset(absolutePosition), toCopy); + remaining -= toCopy; + absolutePosition += toCopy; + if (absolutePosition == readAllocationNode.endPosition) { + readAllocationNode = readAllocationNode.next; + } + } + } + + /** + * Reads data from the front of the rolling buffer. + * + * @param absolutePosition The absolute position from which data should be read. + * @param target The array into which data should be written. + * @param length The number of bytes to read. + */ + private void readData(long absolutePosition, byte[] target, int length) { + advanceReadTo(absolutePosition); + int remaining = length; + while (remaining > 0) { + int toCopy = Math.min(remaining, (int) (readAllocationNode.endPosition - absolutePosition)); + Allocation allocation = readAllocationNode.allocation; + System.arraycopy( + allocation.data, + readAllocationNode.translateOffset(absolutePosition), + target, + length - remaining, + toCopy); + remaining -= toCopy; + absolutePosition += toCopy; + if (absolutePosition == readAllocationNode.endPosition) { + readAllocationNode = readAllocationNode.next; + } + } + } + + /** + * Advances the read position to the specified absolute position. + * + * @param absolutePosition The position to which {@link #readAllocationNode} should be advanced. + */ + private void advanceReadTo(long absolutePosition) { + while (absolutePosition >= readAllocationNode.endPosition) { + readAllocationNode = readAllocationNode.next; + } + } + + /** + * Clears allocation nodes starting from {@code fromNode}. + * + * @param fromNode The node from which to clear. + */ + private void clearAllocationNodes(AllocationNode fromNode) { + if (!fromNode.wasInitialized) { + return; + } + // Bulk release allocations for performance (it's significantly faster when using + // DefaultAllocator because the allocator's lock only needs to be acquired and released once) + // [Internal: See b/29542039]. + int allocationCount = + (writeAllocationNode.wasInitialized ? 1 : 0) + + ((int) (writeAllocationNode.startPosition - fromNode.startPosition) + / allocationLength); + Allocation[] allocationsToRelease = new Allocation[allocationCount]; + AllocationNode currentNode = fromNode; + for (int i = 0; i < allocationsToRelease.length; i++) { + allocationsToRelease[i] = currentNode.allocation; + currentNode = currentNode.clear(); + } + allocator.release(allocationsToRelease); + } + + /** + * Called before writing sample data to {@link #writeAllocationNode}. May cause {@link + * #writeAllocationNode} to be initialized. + * + * @param length The number of bytes that the caller wishes to write. + * @return The number of bytes that the caller is permitted to write, which may be less than + * {@code length}. + */ + private int preAppend(int length) { + if (!writeAllocationNode.wasInitialized) { + writeAllocationNode.initialize( + allocator.allocate(), + new AllocationNode(writeAllocationNode.endPosition, allocationLength)); + } + return Math.min(length, (int) (writeAllocationNode.endPosition - totalBytesWritten)); + } + + /** + * Called after writing sample data. May cause {@link #writeAllocationNode} to be advanced. + * + * @param length The number of bytes that were written. + */ + private void postAppend(int length) { + totalBytesWritten += length; + if (totalBytesWritten == writeAllocationNode.endPosition) { + writeAllocationNode = writeAllocationNode.next; + } + } + + /** A node in a linked list of {@link Allocation}s held by the output. */ + private static final class AllocationNode { + + /** The absolute position of the start of the data (inclusive). */ + public final long startPosition; + /** The absolute position of the end of the data (exclusive). */ + public final long endPosition; + /** Whether the node has been initialized. Remains true after {@link #clear()}. */ + public boolean wasInitialized; + /** The {@link Allocation}, or {@code null} if the node is not initialized. */ + @Nullable public Allocation allocation; + /** + * The next {@link AllocationNode} in the list, or {@code null} if the node has not been + * initialized. Remains set after {@link #clear()}. + */ + @Nullable public AllocationNode next; + + /** + * @param startPosition See {@link #startPosition}. + * @param allocationLength The length of the {@link Allocation} with which this node will be + * initialized. + */ + public AllocationNode(long startPosition, int allocationLength) { + this.startPosition = startPosition; + this.endPosition = startPosition + allocationLength; + } + + /** + * Initializes the node. + * + * @param allocation The node's {@link Allocation}. + * @param next The next {@link AllocationNode}. + */ + public void initialize(Allocation allocation, AllocationNode next) { + this.allocation = allocation; + this.next = next; + wasInitialized = true; + } + + /** + * Gets the offset into the {@link #allocation}'s {@link Allocation#data} that corresponds to + * the specified absolute position. + * + * @param absolutePosition The absolute position. + * @return The corresponding offset into the allocation's data. + */ + public int translateOffset(long absolutePosition) { + return (int) (absolutePosition - startPosition) + allocation.offset; + } + + /** + * Clears {@link #allocation} and {@link #next}. + * + * @return The cleared next {@link AllocationNode}. + */ + public AllocationNode clear() { + allocation = null; + AllocationNode temp = next; + next = null; + return temp; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleQueue.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleQueue.java new file mode 100644 index 0000000000..639cccee00 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleQueue.java @@ -0,0 +1,926 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.os.Looper; +import androidx.annotation.CallSuper; +import androidx.annotation.Nullable; +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** A queue of media samples. */ +public class SampleQueue implements TrackOutput { + + /** A listener for changes to the upstream format. */ + public interface UpstreamFormatChangedListener { + + /** + * Called on the loading thread when an upstream format change occurs. + * + * @param format The new upstream format. + */ + void onUpstreamFormatChanged(Format format); + } + + @VisibleForTesting /* package */ static final int SAMPLE_CAPACITY_INCREMENT = 1000; + + private final SampleDataQueue sampleDataQueue; + private final SampleExtrasHolder extrasHolder; + private final DrmSessionManager drmSessionManager; + private UpstreamFormatChangedListener upstreamFormatChangeListener; + + @Nullable private Format downstreamFormat; + @Nullable private DrmSession currentDrmSession; + + private int capacity; + private int[] sourceIds; + private long[] offsets; + private int[] sizes; + private int[] flags; + private long[] timesUs; + private CryptoData[] cryptoDatas; + private Format[] formats; + + private int length; + private int absoluteFirstIndex; + private int relativeFirstIndex; + private int readPosition; + + private long largestDiscardedTimestampUs; + private long largestQueuedTimestampUs; + private boolean isLastSampleQueued; + private boolean upstreamKeyframeRequired; + private boolean upstreamFormatRequired; + private Format upstreamFormat; + private Format upstreamCommittedFormat; + private int upstreamSourceId; + + private boolean pendingUpstreamFormatAdjustment; + private Format unadjustedUpstreamFormat; + private long sampleOffsetUs; + private boolean pendingSplice; + + /** + * Creates a sample queue. + * + * @param allocator An {@link Allocator} from which allocations for sample data can be obtained. + * @param drmSessionManager The {@link DrmSessionManager} to obtain {@link DrmSession DrmSessions} + * from. The created instance does not take ownership of this {@link DrmSessionManager}. + */ + public SampleQueue(Allocator allocator, DrmSessionManager drmSessionManager) { + sampleDataQueue = new SampleDataQueue(allocator); + this.drmSessionManager = drmSessionManager; + extrasHolder = new SampleExtrasHolder(); + capacity = SAMPLE_CAPACITY_INCREMENT; + sourceIds = new int[capacity]; + offsets = new long[capacity]; + timesUs = new long[capacity]; + flags = new int[capacity]; + sizes = new int[capacity]; + cryptoDatas = new CryptoData[capacity]; + formats = new Format[capacity]; + largestDiscardedTimestampUs = Long.MIN_VALUE; + largestQueuedTimestampUs = Long.MIN_VALUE; + upstreamFormatRequired = true; + upstreamKeyframeRequired = true; + } + + // Called by the consuming thread when there is no loading thread. + + /** Calls {@link #reset(boolean) reset(true)} and releases any resources owned by the queue. */ + @CallSuper + public void release() { + reset(/* resetUpstreamFormat= */ true); + releaseDrmSessionReferences(); + } + + /** Convenience method for {@code reset(false)}. */ + public final void reset() { + reset(/* resetUpstreamFormat= */ false); + } + + /** + * Clears all samples from the queue. + * + * @param resetUpstreamFormat Whether the upstream format should be cleared. If set to false, + * samples queued after the reset (and before a subsequent call to {@link #format(Format)}) + * are assumed to have the current upstream format. If set to true, {@link #format(Format)} + * must be called after the reset before any more samples can be queued. + */ + @CallSuper + public void reset(boolean resetUpstreamFormat) { + sampleDataQueue.reset(); + length = 0; + absoluteFirstIndex = 0; + relativeFirstIndex = 0; + readPosition = 0; + upstreamKeyframeRequired = true; + largestDiscardedTimestampUs = Long.MIN_VALUE; + largestQueuedTimestampUs = Long.MIN_VALUE; + isLastSampleQueued = false; + upstreamCommittedFormat = null; + if (resetUpstreamFormat) { + unadjustedUpstreamFormat = null; + upstreamFormat = null; + upstreamFormatRequired = true; + } + } + + /** + * Sets a source identifier for subsequent samples. + * + * @param sourceId The source identifier. + */ + public final void sourceId(int sourceId) { + upstreamSourceId = sourceId; + } + + /** Indicates samples that are subsequently queued should be spliced into those already queued. */ + public final void splice() { + pendingSplice = true; + } + + /** Returns the current absolute write index. */ + public final int getWriteIndex() { + return absoluteFirstIndex + length; + } + + /** + * Discards samples from the write side of the queue. + * + * @param discardFromIndex The absolute index of the first sample to be discarded. Must be in the + * range [{@link #getReadIndex()}, {@link #getWriteIndex()}]. + */ + public final void discardUpstreamSamples(int discardFromIndex) { + sampleDataQueue.discardUpstreamSampleBytes(discardUpstreamSampleMetadata(discardFromIndex)); + } + + // Called by the consuming thread. + + /** Calls {@link #discardToEnd()} and releases any resources owned by the queue. */ + @CallSuper + public void preRelease() { + discardToEnd(); + releaseDrmSessionReferences(); + } + + /** + * Throws an error that's preventing data from being read. Does nothing if no such error exists. + * + * @throws IOException The underlying error. + */ + @CallSuper + public void maybeThrowError() throws IOException { + // TODO: Avoid throwing if the DRM error is not preventing a read operation. + if (currentDrmSession != null && currentDrmSession.getState() == DrmSession.STATE_ERROR) { + throw Assertions.checkNotNull(currentDrmSession.getError()); + } + } + + /** Returns the current absolute start index. */ + public final int getFirstIndex() { + return absoluteFirstIndex; + } + + /** Returns the current absolute read index. */ + public final int getReadIndex() { + return absoluteFirstIndex + readPosition; + } + + /** + * Peeks the source id of the next sample to be read, or the current upstream source id if the + * queue is empty or if the read position is at the end of the queue. + * + * @return The source id. + */ + public final synchronized int peekSourceId() { + int relativeReadIndex = getRelativeIndex(readPosition); + return hasNextSample() ? sourceIds[relativeReadIndex] : upstreamSourceId; + } + + /** Returns the upstream {@link Format} in which samples are being queued. */ + public final synchronized Format getUpstreamFormat() { + return upstreamFormatRequired ? null : upstreamFormat; + } + + /** + * Returns the largest sample timestamp that has been queued since the last {@link #reset}. + * + *

Samples that were discarded by calling {@link #discardUpstreamSamples(int)} are not + * considered as having been queued. Samples that were dequeued from the front of the queue are + * considered as having been queued. + * + * @return The largest sample timestamp that has been queued, or {@link Long#MIN_VALUE} if no + * samples have been queued. + */ + public final synchronized long getLargestQueuedTimestampUs() { + return largestQueuedTimestampUs; + } + + /** + * Returns whether the last sample of the stream has knowingly been queued. A return value of + * {@code false} means that the last sample had not been queued or that it's unknown whether the + * last sample has been queued. + * + *

Samples that were discarded by calling {@link #discardUpstreamSamples(int)} are not + * considered as having been queued. Samples that were dequeued from the front of the queue are + * considered as having been queued. + */ + public final synchronized boolean isLastSampleQueued() { + return isLastSampleQueued; + } + + /** Returns the timestamp of the first sample, or {@link Long#MIN_VALUE} if the queue is empty. */ + public final synchronized long getFirstTimestampUs() { + return length == 0 ? Long.MIN_VALUE : timesUs[relativeFirstIndex]; + } + + /** + * Returns whether there is data available for reading. + * + *

Note: If the stream has ended then a buffer with the end of stream flag can always be read + * from {@link #read}. Hence an ended stream is always ready. + * + * @param loadingFinished Whether no more samples will be written to the sample queue. When true, + * this method returns true if the sample queue is empty, because an empty sample queue means + * the end of stream has been reached. When false, this method returns false if the sample + * queue is empty. + */ + @SuppressWarnings("ReferenceEquality") // See comments in setUpstreamFormat + @CallSuper + public synchronized boolean isReady(boolean loadingFinished) { + if (!hasNextSample()) { + return loadingFinished + || isLastSampleQueued + || (upstreamFormat != null && upstreamFormat != downstreamFormat); + } + int relativeReadIndex = getRelativeIndex(readPosition); + if (formats[relativeReadIndex] != downstreamFormat) { + // A format can be read. + return true; + } + return mayReadSample(relativeReadIndex); + } + + /** + * Attempts to read from the queue. + * + *

{@link Format Formats} read from this method may be associated to a {@link DrmSession} + * through {@link FormatHolder#drmSession}, which is populated in two scenarios: + * + *

    + *
  • The {@link Format} has a non-null {@link Format#drmInitData}. + *
  • The {@link DrmSessionManager} provides placeholder sessions for this queue's track type. + * See {@link DrmSessionManager#acquirePlaceholderSession(Looper, int)}. + *
+ * + * @param formatHolder A {@link FormatHolder} to populate in the case of reading a format. + * @param buffer A {@link DecoderInputBuffer} to populate in the case of reading a sample or the + * end of the stream. If the end of the stream has been reached, the {@link + * C#BUFFER_FLAG_END_OF_STREAM} flag will be set on the buffer. If a {@link + * DecoderInputBuffer#isFlagsOnly() flags-only} buffer is passed, only the buffer flags may be + * populated by this method and the read position of the queue will not change. + * @param formatRequired Whether the caller requires that the format of the stream be read even if + * it's not changing. A sample will never be read if set to true, however it is still possible + * for the end of stream or nothing to be read. + * @param loadingFinished True if an empty queue should be considered the end of the stream. + * @param decodeOnlyUntilUs If a buffer is read, the {@link C#BUFFER_FLAG_DECODE_ONLY} flag will + * be set if the buffer's timestamp is less than this value. + * @return The result, which can be {@link C#RESULT_NOTHING_READ}, {@link C#RESULT_FORMAT_READ} or + * {@link C#RESULT_BUFFER_READ}. + */ + @CallSuper + public int read( + FormatHolder formatHolder, + DecoderInputBuffer buffer, + boolean formatRequired, + boolean loadingFinished, + long decodeOnlyUntilUs) { + int result = + readSampleMetadata( + formatHolder, buffer, formatRequired, loadingFinished, decodeOnlyUntilUs, extrasHolder); + if (result == C.RESULT_BUFFER_READ && !buffer.isEndOfStream() && !buffer.isFlagsOnly()) { + sampleDataQueue.readToBuffer(buffer, extrasHolder); + } + return result; + } + + /** + * Attempts to seek the read position to the specified sample index. + * + * @param sampleIndex The sample index. + * @return Whether the seek was successful. + */ + public final synchronized boolean seekTo(int sampleIndex) { + rewind(); + if (sampleIndex < absoluteFirstIndex || sampleIndex > absoluteFirstIndex + length) { + return false; + } + readPosition = sampleIndex - absoluteFirstIndex; + return true; + } + + /** + * Attempts to seek the read position to the keyframe before or at the specified time. + * + * @param timeUs The time to seek to. + * @param allowTimeBeyondBuffer Whether the operation can succeed if {@code timeUs} is beyond the + * end of the queue, by seeking to the last sample (or keyframe). + * @return Whether the seek was successful. + */ + public final synchronized boolean seekTo(long timeUs, boolean allowTimeBeyondBuffer) { + rewind(); + int relativeReadIndex = getRelativeIndex(readPosition); + if (!hasNextSample() + || timeUs < timesUs[relativeReadIndex] + || (timeUs > largestQueuedTimestampUs && !allowTimeBeyondBuffer)) { + return false; + } + int offset = + findSampleBefore(relativeReadIndex, length - readPosition, timeUs, /* keyframe= */ true); + if (offset == -1) { + return false; + } + readPosition += offset; + return true; + } + + /** + * Advances the read position to the keyframe before or at the specified time. + * + * @param timeUs The time to advance to. + * @return The number of samples that were skipped, which may be equal to 0. + */ + public final synchronized int advanceTo(long timeUs) { + int relativeReadIndex = getRelativeIndex(readPosition); + if (!hasNextSample() || timeUs < timesUs[relativeReadIndex]) { + return 0; + } + int offset = + findSampleBefore(relativeReadIndex, length - readPosition, timeUs, /* keyframe= */ true); + if (offset == -1) { + return 0; + } + readPosition += offset; + return offset; + } + + /** + * Advances the read position to the end of the queue. + * + * @return The number of samples that were skipped. + */ + public final synchronized int advanceToEnd() { + int skipCount = length - readPosition; + readPosition = length; + return skipCount; + } + + /** + * Discards up to but not including the sample immediately before or at the specified time. + * + * @param timeUs The time to discard up to. + * @param toKeyframe If true then discards samples up to the keyframe before or at the specified + * time, rather than any sample before or at that time. + * @param stopAtReadPosition If true then samples are only discarded if they're before the read + * position. If false then samples at and beyond the read position may be discarded, in which + * case the read position is advanced to the first remaining sample. + */ + public final void discardTo(long timeUs, boolean toKeyframe, boolean stopAtReadPosition) { + sampleDataQueue.discardDownstreamTo( + discardSampleMetadataTo(timeUs, toKeyframe, stopAtReadPosition)); + } + + /** Discards up to but not including the read position. */ + public final void discardToRead() { + sampleDataQueue.discardDownstreamTo(discardSampleMetadataToRead()); + } + + /** Discards all samples in the queue and advances the read position. */ + public final void discardToEnd() { + sampleDataQueue.discardDownstreamTo(discardSampleMetadataToEnd()); + } + + // Called by the loading thread. + + /** + * Sets an offset that will be added to the timestamps (and sub-sample timestamps) of samples that + * are subsequently queued. + * + * @param sampleOffsetUs The timestamp offset in microseconds. + */ + public final void setSampleOffsetUs(long sampleOffsetUs) { + if (this.sampleOffsetUs != sampleOffsetUs) { + this.sampleOffsetUs = sampleOffsetUs; + invalidateUpstreamFormatAdjustment(); + } + } + + /** + * Sets a listener to be notified of changes to the upstream format. + * + * @param listener The listener. + */ + public final void setUpstreamFormatChangeListener(UpstreamFormatChangedListener listener) { + upstreamFormatChangeListener = listener; + } + + // TrackOutput implementation. Called by the loading thread. + + @Override + public final void format(Format unadjustedUpstreamFormat) { + Format adjustedUpstreamFormat = getAdjustedUpstreamFormat(unadjustedUpstreamFormat); + pendingUpstreamFormatAdjustment = false; + this.unadjustedUpstreamFormat = unadjustedUpstreamFormat; + boolean upstreamFormatChanged = setUpstreamFormat(adjustedUpstreamFormat); + if (upstreamFormatChangeListener != null && upstreamFormatChanged) { + upstreamFormatChangeListener.onUpstreamFormatChanged(adjustedUpstreamFormat); + } + } + + @Override + public final int sampleData(ExtractorInput input, int length, boolean allowEndOfInput) + throws IOException, InterruptedException { + return sampleDataQueue.sampleData(input, length, allowEndOfInput); + } + + @Override + public final void sampleData(ParsableByteArray buffer, int length) { + sampleDataQueue.sampleData(buffer, length); + } + + @Override + public final void sampleMetadata( + long timeUs, + @C.BufferFlags int flags, + int size, + int offset, + @Nullable CryptoData cryptoData) { + if (pendingUpstreamFormatAdjustment) { + format(unadjustedUpstreamFormat); + } + timeUs += sampleOffsetUs; + if (pendingSplice) { + if ((flags & C.BUFFER_FLAG_KEY_FRAME) == 0 || !attemptSplice(timeUs)) { + return; + } + pendingSplice = false; + } + long absoluteOffset = sampleDataQueue.getTotalBytesWritten() - size - offset; + commitSample(timeUs, flags, absoluteOffset, size, cryptoData); + } + + /** + * Invalidates the last upstream format adjustment. {@link #getAdjustedUpstreamFormat(Format)} + * will be called to adjust the upstream {@link Format} again before the next sample is queued. + */ + protected final void invalidateUpstreamFormatAdjustment() { + pendingUpstreamFormatAdjustment = true; + } + + /** + * Adjusts the upstream {@link Format} (i.e., the {@link Format} that was most recently passed to + * {@link #format(Format)}). + * + *

The default implementation incorporates the sample offset passed to {@link + * #setSampleOffsetUs(long)} into {@link Format#subsampleOffsetUs}. + * + * @param format The {@link Format} to adjust. + * @return The adjusted {@link Format}. + */ + @CallSuper + protected Format getAdjustedUpstreamFormat(Format format) { + if (sampleOffsetUs != 0 && format.subsampleOffsetUs != Format.OFFSET_SAMPLE_RELATIVE) { + format = format.copyWithSubsampleOffsetUs(format.subsampleOffsetUs + sampleOffsetUs); + } + return format; + } + + // Internal methods. + + /** Rewinds the read position to the first sample in the queue. */ + private synchronized void rewind() { + readPosition = 0; + sampleDataQueue.rewind(); + } + + @SuppressWarnings("ReferenceEquality") // See comments in setUpstreamFormat + private synchronized int readSampleMetadata( + FormatHolder formatHolder, + DecoderInputBuffer buffer, + boolean formatRequired, + boolean loadingFinished, + long decodeOnlyUntilUs, + SampleExtrasHolder extrasHolder) { + buffer.waitingForKeys = false; + // This is a temporary fix for https://github.com/google/ExoPlayer/issues/6155. + // TODO: Remove it and replace it with a fix that discards samples when writing to the queue. + boolean hasNextSample; + int relativeReadIndex = C.INDEX_UNSET; + while ((hasNextSample = hasNextSample())) { + relativeReadIndex = getRelativeIndex(readPosition); + long timeUs = timesUs[relativeReadIndex]; + if (timeUs < decodeOnlyUntilUs + && MimeTypes.allSamplesAreSyncSamples(formats[relativeReadIndex].sampleMimeType)) { + readPosition++; + } else { + break; + } + } + + if (!hasNextSample) { + if (loadingFinished || isLastSampleQueued) { + buffer.setFlags(C.BUFFER_FLAG_END_OF_STREAM); + return C.RESULT_BUFFER_READ; + } else if (upstreamFormat != null && (formatRequired || upstreamFormat != downstreamFormat)) { + onFormatResult(Assertions.checkNotNull(upstreamFormat), formatHolder); + return C.RESULT_FORMAT_READ; + } else { + return C.RESULT_NOTHING_READ; + } + } + + if (formatRequired || formats[relativeReadIndex] != downstreamFormat) { + onFormatResult(formats[relativeReadIndex], formatHolder); + return C.RESULT_FORMAT_READ; + } + + if (!mayReadSample(relativeReadIndex)) { + buffer.waitingForKeys = true; + return C.RESULT_NOTHING_READ; + } + + buffer.setFlags(flags[relativeReadIndex]); + buffer.timeUs = timesUs[relativeReadIndex]; + if (buffer.timeUs < decodeOnlyUntilUs) { + buffer.addFlag(C.BUFFER_FLAG_DECODE_ONLY); + } + if (buffer.isFlagsOnly()) { + return C.RESULT_BUFFER_READ; + } + extrasHolder.size = sizes[relativeReadIndex]; + extrasHolder.offset = offsets[relativeReadIndex]; + extrasHolder.cryptoData = cryptoDatas[relativeReadIndex]; + + readPosition++; + return C.RESULT_BUFFER_READ; + } + + private synchronized boolean setUpstreamFormat(Format format) { + if (format == null) { + upstreamFormatRequired = true; + return false; + } + upstreamFormatRequired = false; + if (Util.areEqual(format, upstreamFormat)) { + // The format is unchanged. If format and upstreamFormat are different objects, we keep the + // current upstreamFormat so we can detect format changes on the read side using cheap + // referential quality. + return false; + } else if (Util.areEqual(format, upstreamCommittedFormat)) { + // The format has changed back to the format of the last committed sample. If they are + // different objects, we revert back to using upstreamCommittedFormat as the upstreamFormat + // so we can detect format changes on the read side using cheap referential equality. + upstreamFormat = upstreamCommittedFormat; + return true; + } else { + upstreamFormat = format; + return true; + } + } + + private synchronized long discardSampleMetadataTo( + long timeUs, boolean toKeyframe, boolean stopAtReadPosition) { + if (length == 0 || timeUs < timesUs[relativeFirstIndex]) { + return C.POSITION_UNSET; + } + int searchLength = stopAtReadPosition && readPosition != length ? readPosition + 1 : length; + int discardCount = findSampleBefore(relativeFirstIndex, searchLength, timeUs, toKeyframe); + if (discardCount == -1) { + return C.POSITION_UNSET; + } + return discardSamples(discardCount); + } + + public synchronized long discardSampleMetadataToRead() { + if (readPosition == 0) { + return C.POSITION_UNSET; + } + return discardSamples(readPosition); + } + + private synchronized long discardSampleMetadataToEnd() { + if (length == 0) { + return C.POSITION_UNSET; + } + return discardSamples(length); + } + + private void releaseDrmSessionReferences() { + if (currentDrmSession != null) { + currentDrmSession.release(); + currentDrmSession = null; + // Clear downstream format to avoid violating the assumption that downstreamFormat.drmInitData + // != null implies currentSession != null + downstreamFormat = null; + } + } + + private synchronized void commitSample( + long timeUs, @C.BufferFlags int sampleFlags, long offset, int size, CryptoData cryptoData) { + if (upstreamKeyframeRequired) { + if ((sampleFlags & C.BUFFER_FLAG_KEY_FRAME) == 0) { + return; + } + upstreamKeyframeRequired = false; + } + Assertions.checkState(!upstreamFormatRequired); + + isLastSampleQueued = (sampleFlags & C.BUFFER_FLAG_LAST_SAMPLE) != 0; + largestQueuedTimestampUs = Math.max(largestQueuedTimestampUs, timeUs); + + int relativeEndIndex = getRelativeIndex(length); + timesUs[relativeEndIndex] = timeUs; + offsets[relativeEndIndex] = offset; + sizes[relativeEndIndex] = size; + flags[relativeEndIndex] = sampleFlags; + cryptoDatas[relativeEndIndex] = cryptoData; + formats[relativeEndIndex] = upstreamFormat; + sourceIds[relativeEndIndex] = upstreamSourceId; + upstreamCommittedFormat = upstreamFormat; + + length++; + if (length == capacity) { + // Increase the capacity. + int newCapacity = capacity + SAMPLE_CAPACITY_INCREMENT; + int[] newSourceIds = new int[newCapacity]; + long[] newOffsets = new long[newCapacity]; + long[] newTimesUs = new long[newCapacity]; + int[] newFlags = new int[newCapacity]; + int[] newSizes = new int[newCapacity]; + CryptoData[] newCryptoDatas = new CryptoData[newCapacity]; + Format[] newFormats = new Format[newCapacity]; + int beforeWrap = capacity - relativeFirstIndex; + System.arraycopy(offsets, relativeFirstIndex, newOffsets, 0, beforeWrap); + System.arraycopy(timesUs, relativeFirstIndex, newTimesUs, 0, beforeWrap); + System.arraycopy(flags, relativeFirstIndex, newFlags, 0, beforeWrap); + System.arraycopy(sizes, relativeFirstIndex, newSizes, 0, beforeWrap); + System.arraycopy(cryptoDatas, relativeFirstIndex, newCryptoDatas, 0, beforeWrap); + System.arraycopy(formats, relativeFirstIndex, newFormats, 0, beforeWrap); + System.arraycopy(sourceIds, relativeFirstIndex, newSourceIds, 0, beforeWrap); + int afterWrap = relativeFirstIndex; + System.arraycopy(offsets, 0, newOffsets, beforeWrap, afterWrap); + System.arraycopy(timesUs, 0, newTimesUs, beforeWrap, afterWrap); + System.arraycopy(flags, 0, newFlags, beforeWrap, afterWrap); + System.arraycopy(sizes, 0, newSizes, beforeWrap, afterWrap); + System.arraycopy(cryptoDatas, 0, newCryptoDatas, beforeWrap, afterWrap); + System.arraycopy(formats, 0, newFormats, beforeWrap, afterWrap); + System.arraycopy(sourceIds, 0, newSourceIds, beforeWrap, afterWrap); + offsets = newOffsets; + timesUs = newTimesUs; + flags = newFlags; + sizes = newSizes; + cryptoDatas = newCryptoDatas; + formats = newFormats; + sourceIds = newSourceIds; + relativeFirstIndex = 0; + capacity = newCapacity; + } + } + + /** + * Attempts to discard samples from the end of the queue to allow samples starting from the + * specified timestamp to be spliced in. Samples will not be discarded prior to the read position. + * + * @param timeUs The timestamp at which the splice occurs. + * @return Whether the splice was successful. + */ + private synchronized boolean attemptSplice(long timeUs) { + if (length == 0) { + return timeUs > largestDiscardedTimestampUs; + } + long largestReadTimestampUs = + Math.max(largestDiscardedTimestampUs, getLargestTimestamp(readPosition)); + if (largestReadTimestampUs >= timeUs) { + return false; + } + int retainCount = length; + int relativeSampleIndex = getRelativeIndex(length - 1); + while (retainCount > readPosition && timesUs[relativeSampleIndex] >= timeUs) { + retainCount--; + relativeSampleIndex--; + if (relativeSampleIndex == -1) { + relativeSampleIndex = capacity - 1; + } + } + discardUpstreamSampleMetadata(absoluteFirstIndex + retainCount); + return true; + } + + private long discardUpstreamSampleMetadata(int discardFromIndex) { + int discardCount = getWriteIndex() - discardFromIndex; + Assertions.checkArgument(0 <= discardCount && discardCount <= (length - readPosition)); + length -= discardCount; + largestQueuedTimestampUs = Math.max(largestDiscardedTimestampUs, getLargestTimestamp(length)); + isLastSampleQueued = discardCount == 0 && isLastSampleQueued; + if (length != 0) { + int relativeLastWriteIndex = getRelativeIndex(length - 1); + return offsets[relativeLastWriteIndex] + sizes[relativeLastWriteIndex]; + } + return 0; + } + + private boolean hasNextSample() { + return readPosition != length; + } + + /** + * Sets the downstream format, performs DRM resource management, and populates the {@code + * outputFormatHolder}. + * + * @param newFormat The new downstream format. + * @param outputFormatHolder The output {@link FormatHolder}. + */ + private void onFormatResult(Format newFormat, FormatHolder outputFormatHolder) { + outputFormatHolder.format = newFormat; + boolean isFirstFormat = downstreamFormat == null; + DrmInitData oldDrmInitData = isFirstFormat ? null : downstreamFormat.drmInitData; + downstreamFormat = newFormat; + if (drmSessionManager == DrmSessionManager.DUMMY) { + // Avoid attempting to acquire a session using the dummy DRM session manager. It's likely that + // the media source creation has not yet been migrated and the renderer can acquire the + // session for the read DRM init data. + // TODO: Remove once renderers are migrated [Internal ref: b/122519809]. + return; + } + DrmInitData newDrmInitData = newFormat.drmInitData; + outputFormatHolder.includesDrmSession = true; + outputFormatHolder.drmSession = currentDrmSession; + if (!isFirstFormat && Util.areEqual(oldDrmInitData, newDrmInitData)) { + // Nothing to do. + return; + } + // Ensure we acquire the new session before releasing the previous one in case the same session + // is being used for both DrmInitData. + DrmSession previousSession = currentDrmSession; + Looper playbackLooper = Assertions.checkNotNull(Looper.myLooper()); + currentDrmSession = + newDrmInitData != null + ? drmSessionManager.acquireSession(playbackLooper, newDrmInitData) + : drmSessionManager.acquirePlaceholderSession( + playbackLooper, MimeTypes.getTrackType(newFormat.sampleMimeType)); + outputFormatHolder.drmSession = currentDrmSession; + + if (previousSession != null) { + previousSession.release(); + } + } + + /** + * Returns whether it's possible to read the next sample. + * + * @param relativeReadIndex The relative read index of the next sample. + * @return Whether it's possible to read the next sample. + */ + private boolean mayReadSample(int relativeReadIndex) { + if (drmSessionManager == DrmSessionManager.DUMMY) { + // TODO: Remove once renderers are migrated [Internal ref: b/122519809]. + // For protected content it's likely that the DrmSessionManager is still being injected into + // the renderers. We assume that the renderers will be able to acquire a DrmSession if needed. + return true; + } + return currentDrmSession == null + || currentDrmSession.getState() == DrmSession.STATE_OPENED_WITH_KEYS + || ((flags[relativeReadIndex] & C.BUFFER_FLAG_ENCRYPTED) == 0 + && currentDrmSession.playClearSamplesWithoutKeys()); + } + + /** + * Finds the sample in the specified range that's before or at the specified time. If {@code + * keyframe} is {@code true} then the sample is additionally required to be a keyframe. + * + * @param relativeStartIndex The relative index from which to start searching. + * @param length The length of the range being searched. + * @param timeUs The specified time. + * @param keyframe Whether only keyframes should be considered. + * @return The offset from {@code relativeFirstIndex} to the found sample, or -1 if no matching + * sample was found. + */ + private int findSampleBefore(int relativeStartIndex, int length, long timeUs, boolean keyframe) { + // This could be optimized to use a binary search, however in practice callers to this method + // normally pass times near to the start of the search region. Hence it's unclear whether + // switching to a binary search would yield any real benefit. + int sampleCountToTarget = -1; + int searchIndex = relativeStartIndex; + for (int i = 0; i < length && timesUs[searchIndex] <= timeUs; i++) { + if (!keyframe || (flags[searchIndex] & C.BUFFER_FLAG_KEY_FRAME) != 0) { + // We've found a suitable sample. + sampleCountToTarget = i; + } + searchIndex++; + if (searchIndex == capacity) { + searchIndex = 0; + } + } + return sampleCountToTarget; + } + + /** + * Discards the specified number of samples. + * + * @param discardCount The number of samples to discard. + * @return The corresponding offset up to which data should be discarded. + */ + private long discardSamples(int discardCount) { + largestDiscardedTimestampUs = + Math.max(largestDiscardedTimestampUs, getLargestTimestamp(discardCount)); + length -= discardCount; + absoluteFirstIndex += discardCount; + relativeFirstIndex += discardCount; + if (relativeFirstIndex >= capacity) { + relativeFirstIndex -= capacity; + } + readPosition -= discardCount; + if (readPosition < 0) { + readPosition = 0; + } + if (length == 0) { + int relativeLastDiscardIndex = (relativeFirstIndex == 0 ? capacity : relativeFirstIndex) - 1; + return offsets[relativeLastDiscardIndex] + sizes[relativeLastDiscardIndex]; + } else { + return offsets[relativeFirstIndex]; + } + } + + /** + * Finds the largest timestamp of any sample from the start of the queue up to the specified + * length, assuming that the timestamps prior to a keyframe are always less than the timestamp of + * the keyframe itself, and of subsequent frames. + * + * @param length The length of the range being searched. + * @return The largest timestamp, or {@link Long#MIN_VALUE} if {@code length == 0}. + */ + private long getLargestTimestamp(int length) { + if (length == 0) { + return Long.MIN_VALUE; + } + long largestTimestampUs = Long.MIN_VALUE; + int relativeSampleIndex = getRelativeIndex(length - 1); + for (int i = 0; i < length; i++) { + largestTimestampUs = Math.max(largestTimestampUs, timesUs[relativeSampleIndex]); + if ((flags[relativeSampleIndex] & C.BUFFER_FLAG_KEY_FRAME) != 0) { + break; + } + relativeSampleIndex--; + if (relativeSampleIndex == -1) { + relativeSampleIndex = capacity - 1; + } + } + return largestTimestampUs; + } + + /** + * Returns the relative index for a given offset from the start of the queue. + * + * @param offset The offset, which must be in the range [0, length]. + */ + private int getRelativeIndex(int offset) { + int relativeIndex = relativeFirstIndex + offset; + return relativeIndex < capacity ? relativeIndex : relativeIndex - capacity; + } + + /** A holder for sample metadata not held by {@link DecoderInputBuffer}. */ + /* package */ static final class SampleExtrasHolder { + + public int size; + public long offset; + public CryptoData cryptoData; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleStream.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleStream.java new file mode 100644 index 0000000000..54a7d0f895 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SampleStream.java @@ -0,0 +1,79 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import java.io.IOException; + +/** + * A stream of media samples (and associated format information). + */ +public interface SampleStream { + + /** + * Returns whether data is available to be read. + *

+ * Note: If the stream has ended then a buffer with the end of stream flag can always be read from + * {@link #readData(FormatHolder, DecoderInputBuffer, boolean)}. Hence an ended stream is always + * ready. + * + * @return Whether data is available to be read. + */ + boolean isReady(); + + /** + * Throws an error that's preventing data from being read. Does nothing if no such error exists. + * + * @throws IOException The underlying error. + */ + void maybeThrowError() throws IOException; + + /** + * Attempts to read from the stream. + * + *

If the stream has ended then {@link C#BUFFER_FLAG_END_OF_STREAM} flag is set on {@code + * buffer} and {@link C#RESULT_BUFFER_READ} is returned. Else if no data is available then {@link + * C#RESULT_NOTHING_READ} is returned. Else if the format of the media is changing or if {@code + * formatRequired} is set then {@code formatHolder} is populated and {@link C#RESULT_FORMAT_READ} + * is returned. Else {@code buffer} is populated and {@link C#RESULT_BUFFER_READ} is returned. + * + * @param formatHolder A {@link FormatHolder} to populate in the case of reading a format. + * @param buffer A {@link DecoderInputBuffer} to populate in the case of reading a sample or the + * end of the stream. If the end of the stream has been reached, the {@link + * C#BUFFER_FLAG_END_OF_STREAM} flag will be set on the buffer. If a {@link + * DecoderInputBuffer#isFlagsOnly() flags-only} buffer is passed, then no {@link + * DecoderInputBuffer#data} will be read and the read position of the stream will not change, + * but the flags of the buffer will be populated. + * @param formatRequired Whether the caller requires that the format of the stream be read even if + * it's not changing. A sample will never be read if set to true, however it is still possible + * for the end of stream or nothing to be read. + * @return The result, which can be {@link C#RESULT_NOTHING_READ}, {@link C#RESULT_FORMAT_READ} or + * {@link C#RESULT_BUFFER_READ}. + */ + int readData(FormatHolder formatHolder, DecoderInputBuffer buffer, boolean formatRequired); + + /** + * Attempts to skip to the keyframe before the specified position, or to the end of the stream if + * {@code positionUs} is beyond it. + * + * @param positionUs The specified time. + * @return The number of samples that were skipped. + */ + int skipData(long positionUs); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SequenceableLoader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SequenceableLoader.java new file mode 100644 index 0000000000..09cb8b663b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SequenceableLoader.java @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; + +// TODO: Clarify the requirements for implementing this interface [Internal ref: b/36250203]. +/** + * A loader that can proceed in approximate synchronization with other loaders. + */ +public interface SequenceableLoader { + + /** + * A callback to be notified of {@link SequenceableLoader} events. + */ + interface Callback { + + /** + * Called by the loader to indicate that it wishes for its {@link #continueLoading(long)} method + * to be called when it can continue to load data. Called on the playback thread. + */ + void onContinueLoadingRequested(T source); + + } + + /** + * Returns an estimate of the position up to which data is buffered. + * + * @return An estimate of the absolute position in microseconds up to which data is buffered, or + * {@link C#TIME_END_OF_SOURCE} if the data is fully buffered. + */ + long getBufferedPositionUs(); + + /** + * Returns the next load time, or {@link C#TIME_END_OF_SOURCE} if loading has finished. + */ + long getNextLoadPositionUs(); + + /** + * Attempts to continue loading. + * + * @param positionUs The current playback position in microseconds. If playback of the period to + * which this loader belongs has not yet started, the value will be the starting position + * in the period minus the duration of any media in previous periods still to be played. + * @return True if progress was made, meaning that {@link #getNextLoadPositionUs()} will return + * a different value than prior to the call. False otherwise. + */ + boolean continueLoading(long positionUs); + + /** Returns whether the loader is currently loading. */ + boolean isLoading(); + + /** + * Re-evaluates the buffer given the playback position. + * + *

Re-evaluation may discard buffered media so that it can be re-buffered in a different + * quality. + * + * @param positionUs The current playback position in microseconds. If playback of this period has + * not yet started, the value will be the starting position in this period minus the duration + * of any media in previous periods still to be played. + */ + void reevaluateBuffer(long positionUs); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ShuffleOrder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ShuffleOrder.java new file mode 100644 index 0000000000..f137054145 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ShuffleOrder.java @@ -0,0 +1,283 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.util.Arrays; +import java.util.Random; + +/** + * Shuffled order of indices. + * + *

The shuffle order must be immutable to ensure thread safety. + */ +public interface ShuffleOrder { + + /** + * The default {@link ShuffleOrder} implementation for random shuffle order. + */ + class DefaultShuffleOrder implements ShuffleOrder { + + private final Random random; + private final int[] shuffled; + private final int[] indexInShuffled; + + /** + * Creates an instance with a specified length. + * + * @param length The length of the shuffle order. + */ + public DefaultShuffleOrder(int length) { + this(length, new Random()); + } + + /** + * Creates an instance with a specified length and the specified random seed. Shuffle orders of + * the same length initialized with the same random seed are guaranteed to be equal. + * + * @param length The length of the shuffle order. + * @param randomSeed A random seed. + */ + public DefaultShuffleOrder(int length, long randomSeed) { + this(length, new Random(randomSeed)); + } + + /** + * Creates an instance with a specified shuffle order and the specified random seed. The random + * seed is used for {@link #cloneAndInsert(int, int)} invocations. + * + * @param shuffledIndices The shuffled indices to use as order. + * @param randomSeed A random seed. + */ + public DefaultShuffleOrder(int[] shuffledIndices, long randomSeed) { + this(Arrays.copyOf(shuffledIndices, shuffledIndices.length), new Random(randomSeed)); + } + + private DefaultShuffleOrder(int length, Random random) { + this(createShuffledList(length, random), random); + } + + private DefaultShuffleOrder(int[] shuffled, Random random) { + this.shuffled = shuffled; + this.random = random; + this.indexInShuffled = new int[shuffled.length]; + for (int i = 0; i < shuffled.length; i++) { + indexInShuffled[shuffled[i]] = i; + } + } + + @Override + public int getLength() { + return shuffled.length; + } + + @Override + public int getNextIndex(int index) { + int shuffledIndex = indexInShuffled[index]; + return ++shuffledIndex < shuffled.length ? shuffled[shuffledIndex] : C.INDEX_UNSET; + } + + @Override + public int getPreviousIndex(int index) { + int shuffledIndex = indexInShuffled[index]; + return --shuffledIndex >= 0 ? shuffled[shuffledIndex] : C.INDEX_UNSET; + } + + @Override + public int getLastIndex() { + return shuffled.length > 0 ? shuffled[shuffled.length - 1] : C.INDEX_UNSET; + } + + @Override + public int getFirstIndex() { + return shuffled.length > 0 ? shuffled[0] : C.INDEX_UNSET; + } + + @Override + public ShuffleOrder cloneAndInsert(int insertionIndex, int insertionCount) { + int[] insertionPoints = new int[insertionCount]; + int[] insertionValues = new int[insertionCount]; + for (int i = 0; i < insertionCount; i++) { + insertionPoints[i] = random.nextInt(shuffled.length + 1); + int swapIndex = random.nextInt(i + 1); + insertionValues[i] = insertionValues[swapIndex]; + insertionValues[swapIndex] = i + insertionIndex; + } + Arrays.sort(insertionPoints); + int[] newShuffled = new int[shuffled.length + insertionCount]; + int indexInOldShuffled = 0; + int indexInInsertionList = 0; + for (int i = 0; i < shuffled.length + insertionCount; i++) { + if (indexInInsertionList < insertionCount + && indexInOldShuffled == insertionPoints[indexInInsertionList]) { + newShuffled[i] = insertionValues[indexInInsertionList++]; + } else { + newShuffled[i] = shuffled[indexInOldShuffled++]; + if (newShuffled[i] >= insertionIndex) { + newShuffled[i] += insertionCount; + } + } + } + return new DefaultShuffleOrder(newShuffled, new Random(random.nextLong())); + } + + @Override + public ShuffleOrder cloneAndRemove(int indexFrom, int indexToExclusive) { + int numberOfElementsToRemove = indexToExclusive - indexFrom; + int[] newShuffled = new int[shuffled.length - numberOfElementsToRemove]; + int foundElementsCount = 0; + for (int i = 0; i < shuffled.length; i++) { + if (shuffled[i] >= indexFrom && shuffled[i] < indexToExclusive) { + foundElementsCount++; + } else { + newShuffled[i - foundElementsCount] = + shuffled[i] >= indexFrom ? shuffled[i] - numberOfElementsToRemove : shuffled[i]; + } + } + return new DefaultShuffleOrder(newShuffled, new Random(random.nextLong())); + } + + @Override + public ShuffleOrder cloneAndClear() { + return new DefaultShuffleOrder(/* length= */ 0, new Random(random.nextLong())); + } + + private static int[] createShuffledList(int length, Random random) { + int[] shuffled = new int[length]; + for (int i = 0; i < length; i++) { + int swapIndex = random.nextInt(i + 1); + shuffled[i] = shuffled[swapIndex]; + shuffled[swapIndex] = i; + } + return shuffled; + } + + } + + /** + * A {@link ShuffleOrder} implementation which does not shuffle. + */ + final class UnshuffledShuffleOrder implements ShuffleOrder { + + private final int length; + + /** + * Creates an instance with a specified length. + * + * @param length The length of the shuffle order. + */ + public UnshuffledShuffleOrder(int length) { + this.length = length; + } + + @Override + public int getLength() { + return length; + } + + @Override + public int getNextIndex(int index) { + return ++index < length ? index : C.INDEX_UNSET; + } + + @Override + public int getPreviousIndex(int index) { + return --index >= 0 ? index : C.INDEX_UNSET; + } + + @Override + public int getLastIndex() { + return length > 0 ? length - 1 : C.INDEX_UNSET; + } + + @Override + public int getFirstIndex() { + return length > 0 ? 0 : C.INDEX_UNSET; + } + + @Override + public ShuffleOrder cloneAndInsert(int insertionIndex, int insertionCount) { + return new UnshuffledShuffleOrder(length + insertionCount); + } + + @Override + public ShuffleOrder cloneAndRemove(int indexFrom, int indexToExclusive) { + return new UnshuffledShuffleOrder(length - indexToExclusive + indexFrom); + } + + @Override + public ShuffleOrder cloneAndClear() { + return new UnshuffledShuffleOrder(/* length= */ 0); + } + } + + /** + * Returns length of shuffle order. + */ + int getLength(); + + /** + * Returns the next index in the shuffle order. + * + * @param index An index. + * @return The index after {@code index}, or {@link C#INDEX_UNSET} if {@code index} is the last + * element. + */ + int getNextIndex(int index); + + /** + * Returns the previous index in the shuffle order. + * + * @param index An index. + * @return The index before {@code index}, or {@link C#INDEX_UNSET} if {@code index} is the first + * element. + */ + int getPreviousIndex(int index); + + /** + * Returns the last index in the shuffle order, or {@link C#INDEX_UNSET} if the shuffle order is + * empty. + */ + int getLastIndex(); + + /** + * Returns the first index in the shuffle order, or {@link C#INDEX_UNSET} if the shuffle order is + * empty. + */ + int getFirstIndex(); + + /** + * Returns a copy of the shuffle order with newly inserted elements. + * + * @param insertionIndex The index in the unshuffled order at which elements are inserted. + * @param insertionCount The number of elements inserted at {@code insertionIndex}. + * @return A copy of this {@link ShuffleOrder} with newly inserted elements. + */ + ShuffleOrder cloneAndInsert(int insertionIndex, int insertionCount); + + /** + * Returns a copy of the shuffle order with a range of elements removed. + * + * @param indexFrom The starting index in the unshuffled order of the range to remove. + * @param indexToExclusive The smallest index (must be greater or equal to {@code indexFrom}) that + * will not be removed. + * @return A copy of this {@link ShuffleOrder} without the elements in the removed range. + */ + ShuffleOrder cloneAndRemove(int indexFrom, int indexToExclusive); + + /** Returns a copy of the shuffle order with all elements removed. */ + ShuffleOrder cloneAndClear(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SilenceMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SilenceMediaSource.java new file mode 100644 index 0000000000..096cc66622 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SilenceMediaSource.java @@ -0,0 +1,253 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** Media source with a single period consisting of silent raw audio of a given duration. */ +public final class SilenceMediaSource extends BaseMediaSource { + + private static final int SAMPLE_RATE_HZ = 44100; + @C.PcmEncoding private static final int ENCODING = C.ENCODING_PCM_16BIT; + private static final int CHANNEL_COUNT = 2; + private static final Format FORMAT = + Format.createAudioSampleFormat( + /* id=*/ null, + MimeTypes.AUDIO_RAW, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + /* maxInputSize= */ Format.NO_VALUE, + CHANNEL_COUNT, + SAMPLE_RATE_HZ, + ENCODING, + /* initializationData= */ null, + /* drmInitData= */ null, + /* selectionFlags= */ 0, + /* language= */ null); + private static final byte[] SILENCE_SAMPLE = + new byte[Util.getPcmFrameSize(ENCODING, CHANNEL_COUNT) * 1024]; + + private final long durationUs; + + /** + * Creates a new media source providing silent audio of the given duration. + * + * @param durationUs The duration of silent audio to output, in microseconds. + */ + public SilenceMediaSource(long durationUs) { + Assertions.checkArgument(durationUs >= 0); + this.durationUs = durationUs; + } + + @Override + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + refreshSourceInfo( + new SinglePeriodTimeline( + durationUs, /* isSeekable= */ true, /* isDynamic= */ false, /* isLive= */ false)); + } + + @Override + public void maybeThrowSourceInfoRefreshError() {} + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + return new SilenceMediaPeriod(durationUs); + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) {} + + @Override + protected void releaseSourceInternal() {} + + private static final class SilenceMediaPeriod implements MediaPeriod { + + private static final TrackGroupArray TRACKS = new TrackGroupArray(new TrackGroup(FORMAT)); + + private final long durationUs; + private final ArrayList sampleStreams; + + public SilenceMediaPeriod(long durationUs) { + this.durationUs = durationUs; + sampleStreams = new ArrayList<>(); + } + + @Override + public void prepare(Callback callback, long positionUs) { + callback.onPrepared(/* mediaPeriod= */ this); + } + + @Override + public void maybeThrowPrepareError() {} + + @Override + public TrackGroupArray getTrackGroups() { + return TRACKS; + } + + @Override + public long selectTracks( + @NullableType TrackSelection[] selections, + boolean[] mayRetainStreamFlags, + @NullableType SampleStream[] streams, + boolean[] streamResetFlags, + long positionUs) { + positionUs = constrainSeekPosition(positionUs); + for (int i = 0; i < selections.length; i++) { + if (streams[i] != null && (selections[i] == null || !mayRetainStreamFlags[i])) { + sampleStreams.remove(streams[i]); + streams[i] = null; + } + if (streams[i] == null && selections[i] != null) { + SilenceSampleStream stream = new SilenceSampleStream(durationUs); + stream.seekTo(positionUs); + sampleStreams.add(stream); + streams[i] = stream; + streamResetFlags[i] = true; + } + } + return positionUs; + } + + @Override + public void discardBuffer(long positionUs, boolean toKeyframe) {} + + @Override + public long readDiscontinuity() { + return C.TIME_UNSET; + } + + @Override + public long seekToUs(long positionUs) { + positionUs = constrainSeekPosition(positionUs); + for (int i = 0; i < sampleStreams.size(); i++) { + ((SilenceSampleStream) sampleStreams.get(i)).seekTo(positionUs); + } + return positionUs; + } + + @Override + public long getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters) { + return constrainSeekPosition(positionUs); + } + + @Override + public long getBufferedPositionUs() { + return C.TIME_END_OF_SOURCE; + } + + @Override + public long getNextLoadPositionUs() { + return C.TIME_END_OF_SOURCE; + } + + @Override + public boolean continueLoading(long positionUs) { + return false; + } + + @Override + public boolean isLoading() { + return false; + } + + @Override + public void reevaluateBuffer(long positionUs) {} + + private long constrainSeekPosition(long positionUs) { + return Util.constrainValue(positionUs, 0, durationUs); + } + } + + private static final class SilenceSampleStream implements SampleStream { + + private final long durationBytes; + + private boolean sentFormat; + private long positionBytes; + + public SilenceSampleStream(long durationUs) { + durationBytes = getAudioByteCount(durationUs); + seekTo(0); + } + + public void seekTo(long positionUs) { + positionBytes = Util.constrainValue(getAudioByteCount(positionUs), 0, durationBytes); + } + + @Override + public boolean isReady() { + return true; + } + + @Override + public void maybeThrowError() {} + + @Override + public int readData( + FormatHolder formatHolder, DecoderInputBuffer buffer, boolean formatRequired) { + if (!sentFormat || formatRequired) { + formatHolder.format = FORMAT; + sentFormat = true; + return C.RESULT_FORMAT_READ; + } + + long bytesRemaining = durationBytes - positionBytes; + if (bytesRemaining == 0) { + buffer.addFlag(C.BUFFER_FLAG_END_OF_STREAM); + return C.RESULT_BUFFER_READ; + } + + int bytesToWrite = (int) Math.min(SILENCE_SAMPLE.length, bytesRemaining); + buffer.ensureSpaceForWrite(bytesToWrite); + buffer.data.put(SILENCE_SAMPLE, /* offset= */ 0, bytesToWrite); + buffer.timeUs = getAudioPositionUs(positionBytes); + buffer.addFlag(C.BUFFER_FLAG_KEY_FRAME); + positionBytes += bytesToWrite; + return C.RESULT_BUFFER_READ; + } + + @Override + public int skipData(long positionUs) { + long oldPositionBytes = positionBytes; + seekTo(positionUs); + return (int) ((positionBytes - oldPositionBytes) / SILENCE_SAMPLE.length); + } + } + + private static long getAudioByteCount(long durationUs) { + long audioSampleCount = durationUs * SAMPLE_RATE_HZ / C.MICROS_PER_SECOND; + return Util.getPcmFrameSize(ENCODING, CHANNEL_COUNT) * audioSampleCount; + } + + private static long getAudioPositionUs(long bytes) { + long audioSampleCount = bytes / Util.getPcmFrameSize(ENCODING, CHANNEL_COUNT); + return audioSampleCount * C.MICROS_PER_SECOND / SAMPLE_RATE_HZ; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SinglePeriodTimeline.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SinglePeriodTimeline.java new file mode 100644 index 0000000000..72d805dfa3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SinglePeriodTimeline.java @@ -0,0 +1,227 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * A {@link Timeline} consisting of a single period and static window. + */ +public final class SinglePeriodTimeline extends Timeline { + + private static final Object UID = new Object(); + + private final long presentationStartTimeMs; + private final long windowStartTimeMs; + private final long periodDurationUs; + private final long windowDurationUs; + private final long windowPositionInPeriodUs; + private final long windowDefaultStartPositionUs; + private final boolean isSeekable; + private final boolean isDynamic; + private final boolean isLive; + @Nullable private final Object tag; + @Nullable private final Object manifest; + + /** + * Creates a timeline containing a single period and a window that spans it. + * + * @param durationUs The duration of the period, in microseconds. + * @param isSeekable Whether seeking is supported within the period. + * @param isDynamic Whether the window may change when the timeline is updated. + * @param isLive Whether the window is live. + */ + public SinglePeriodTimeline( + long durationUs, boolean isSeekable, boolean isDynamic, boolean isLive) { + this(durationUs, isSeekable, isDynamic, isLive, /* manifest= */ null, /* tag= */ null); + } + + /** + * Creates a timeline containing a single period and a window that spans it. + * + * @param durationUs The duration of the period, in microseconds. + * @param isSeekable Whether seeking is supported within the period. + * @param isDynamic Whether the window may change when the timeline is updated. + * @param isLive Whether the window is live. + * @param manifest The manifest. May be {@code null}. + * @param tag A tag used for {@link Window#tag}. + */ + public SinglePeriodTimeline( + long durationUs, + boolean isSeekable, + boolean isDynamic, + boolean isLive, + @Nullable Object manifest, + @Nullable Object tag) { + this( + durationUs, + durationUs, + /* windowPositionInPeriodUs= */ 0, + /* windowDefaultStartPositionUs= */ 0, + isSeekable, + isDynamic, + isLive, + manifest, + tag); + } + + /** + * Creates a timeline with one period, and a window of known duration starting at a specified + * position in the period. + * + * @param periodDurationUs The duration of the period in microseconds. + * @param windowDurationUs The duration of the window in microseconds. + * @param windowPositionInPeriodUs The position of the start of the window in the period, in + * microseconds. + * @param windowDefaultStartPositionUs The default position relative to the start of the window at + * which to begin playback, in microseconds. + * @param isSeekable Whether seeking is supported within the window. + * @param isDynamic Whether the window may change when the timeline is updated. + * @param isLive Whether the window is live. + * @param manifest The manifest. May be (@code null}. + * @param tag A tag used for {@link Timeline.Window#tag}. + */ + public SinglePeriodTimeline( + long periodDurationUs, + long windowDurationUs, + long windowPositionInPeriodUs, + long windowDefaultStartPositionUs, + boolean isSeekable, + boolean isDynamic, + boolean isLive, + @Nullable Object manifest, + @Nullable Object tag) { + this( + /* presentationStartTimeMs= */ C.TIME_UNSET, + /* windowStartTimeMs= */ C.TIME_UNSET, + periodDurationUs, + windowDurationUs, + windowPositionInPeriodUs, + windowDefaultStartPositionUs, + isSeekable, + isDynamic, + isLive, + manifest, + tag); + } + + /** + * Creates a timeline with one period, and a window of known duration starting at a specified + * position in the period. + * + * @param presentationStartTimeMs The start time of the presentation in milliseconds since the + * epoch. + * @param windowStartTimeMs The window's start time in milliseconds since the epoch. + * @param periodDurationUs The duration of the period in microseconds. + * @param windowDurationUs The duration of the window in microseconds. + * @param windowPositionInPeriodUs The position of the start of the window in the period, in + * microseconds. + * @param windowDefaultStartPositionUs The default position relative to the start of the window at + * which to begin playback, in microseconds. + * @param isSeekable Whether seeking is supported within the window. + * @param isDynamic Whether the window may change when the timeline is updated. + * @param isLive Whether the window is live. + * @param manifest The manifest. May be {@code null}. + * @param tag A tag used for {@link Timeline.Window#tag}. + */ + public SinglePeriodTimeline( + long presentationStartTimeMs, + long windowStartTimeMs, + long periodDurationUs, + long windowDurationUs, + long windowPositionInPeriodUs, + long windowDefaultStartPositionUs, + boolean isSeekable, + boolean isDynamic, + boolean isLive, + @Nullable Object manifest, + @Nullable Object tag) { + this.presentationStartTimeMs = presentationStartTimeMs; + this.windowStartTimeMs = windowStartTimeMs; + this.periodDurationUs = periodDurationUs; + this.windowDurationUs = windowDurationUs; + this.windowPositionInPeriodUs = windowPositionInPeriodUs; + this.windowDefaultStartPositionUs = windowDefaultStartPositionUs; + this.isSeekable = isSeekable; + this.isDynamic = isDynamic; + this.isLive = isLive; + this.manifest = manifest; + this.tag = tag; + } + + @Override + public int getWindowCount() { + return 1; + } + + @Override + public Window getWindow(int windowIndex, Window window, long defaultPositionProjectionUs) { + Assertions.checkIndex(windowIndex, 0, 1); + long windowDefaultStartPositionUs = this.windowDefaultStartPositionUs; + if (isDynamic && defaultPositionProjectionUs != 0) { + if (windowDurationUs == C.TIME_UNSET) { + // Don't allow projection into a window that has an unknown duration. + windowDefaultStartPositionUs = C.TIME_UNSET; + } else { + windowDefaultStartPositionUs += defaultPositionProjectionUs; + if (windowDefaultStartPositionUs > windowDurationUs) { + // The projection takes us beyond the end of the window. + windowDefaultStartPositionUs = C.TIME_UNSET; + } + } + } + return window.set( + Window.SINGLE_WINDOW_UID, + tag, + manifest, + presentationStartTimeMs, + windowStartTimeMs, + isSeekable, + isDynamic, + isLive, + windowDefaultStartPositionUs, + windowDurationUs, + 0, + 0, + windowPositionInPeriodUs); + } + + @Override + public int getPeriodCount() { + return 1; + } + + @Override + public Period getPeriod(int periodIndex, Period period, boolean setIds) { + Assertions.checkIndex(periodIndex, 0, 1); + Object uid = setIds ? UID : null; + return period.set(/* id= */ null, uid, 0, periodDurationUs, -windowPositionInPeriodUs); + } + + @Override + public int getIndexOfPeriod(Object uid) { + return UID.equals(uid) ? 0 : C.INDEX_UNSET; + } + + @Override + public Object getUidOfPeriod(int periodIndex) { + Assertions.checkIndex(periodIndex, 0, 1); + return UID; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SingleSampleMediaPeriod.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SingleSampleMediaPeriod.java new file mode 100644 index 0000000000..6c7d92dac9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SingleSampleMediaPeriod.java @@ -0,0 +1,423 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.LoadErrorAction; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.Loadable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.StatsDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Arrays; +import org.checkerframework.checker.nullness.compatqual.NullableType; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * A {@link MediaPeriod} with a single sample. + */ +/* package */ final class SingleSampleMediaPeriod implements MediaPeriod, + Loader.Callback { + + /** + * The initial size of the allocation used to hold the sample data. + */ + private static final int INITIAL_SAMPLE_SIZE = 1024; + + private final DataSpec dataSpec; + private final DataSource.Factory dataSourceFactory; + @Nullable private final TransferListener transferListener; + private final LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private final EventDispatcher eventDispatcher; + private final TrackGroupArray tracks; + private final ArrayList sampleStreams; + private final long durationUs; + + // Package private to avoid thunk methods. + /* package */ final Loader loader; + /* package */ final Format format; + /* package */ final boolean treatLoadErrorsAsEndOfStream; + + /* package */ boolean notifiedReadingStarted; + /* package */ boolean loadingFinished; + /* package */ byte @MonotonicNonNull [] sampleData; + /* package */ int sampleSize; + + public SingleSampleMediaPeriod( + DataSpec dataSpec, + DataSource.Factory dataSourceFactory, + @Nullable TransferListener transferListener, + Format format, + long durationUs, + LoadErrorHandlingPolicy loadErrorHandlingPolicy, + EventDispatcher eventDispatcher, + boolean treatLoadErrorsAsEndOfStream) { + this.dataSpec = dataSpec; + this.dataSourceFactory = dataSourceFactory; + this.transferListener = transferListener; + this.format = format; + this.durationUs = durationUs; + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + this.eventDispatcher = eventDispatcher; + this.treatLoadErrorsAsEndOfStream = treatLoadErrorsAsEndOfStream; + tracks = new TrackGroupArray(new TrackGroup(format)); + sampleStreams = new ArrayList<>(); + loader = new Loader("Loader:SingleSampleMediaPeriod"); + eventDispatcher.mediaPeriodCreated(); + } + + public void release() { + loader.release(); + eventDispatcher.mediaPeriodReleased(); + } + + @Override + public void prepare(Callback callback, long positionUs) { + callback.onPrepared(this); + } + + @Override + public void maybeThrowPrepareError() throws IOException { + // Do nothing. + } + + @Override + public TrackGroupArray getTrackGroups() { + return tracks; + } + + @Override + public long selectTracks( + @NullableType TrackSelection[] selections, + boolean[] mayRetainStreamFlags, + @NullableType SampleStream[] streams, + boolean[] streamResetFlags, + long positionUs) { + for (int i = 0; i < selections.length; i++) { + if (streams[i] != null && (selections[i] == null || !mayRetainStreamFlags[i])) { + sampleStreams.remove(streams[i]); + streams[i] = null; + } + if (streams[i] == null && selections[i] != null) { + SampleStreamImpl stream = new SampleStreamImpl(); + sampleStreams.add(stream); + streams[i] = stream; + streamResetFlags[i] = true; + } + } + return positionUs; + } + + @Override + public void discardBuffer(long positionUs, boolean toKeyframe) { + // Do nothing. + } + + @Override + public void reevaluateBuffer(long positionUs) { + // Do nothing. + } + + @Override + public boolean continueLoading(long positionUs) { + if (loadingFinished || loader.isLoading() || loader.hasFatalError()) { + return false; + } + DataSource dataSource = dataSourceFactory.createDataSource(); + if (transferListener != null) { + dataSource.addTransferListener(transferListener); + } + long elapsedRealtimeMs = + loader.startLoading( + new SourceLoadable(dataSpec, dataSource), + /* callback= */ this, + loadErrorHandlingPolicy.getMinimumLoadableRetryCount(C.DATA_TYPE_MEDIA)); + eventDispatcher.loadStarted( + dataSpec, + C.DATA_TYPE_MEDIA, + C.TRACK_TYPE_UNKNOWN, + format, + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + /* mediaStartTimeUs= */ 0, + durationUs, + elapsedRealtimeMs); + return true; + } + + @Override + public boolean isLoading() { + return loader.isLoading(); + } + + @Override + public long readDiscontinuity() { + if (!notifiedReadingStarted) { + eventDispatcher.readingStarted(); + notifiedReadingStarted = true; + } + return C.TIME_UNSET; + } + + @Override + public long getNextLoadPositionUs() { + return loadingFinished || loader.isLoading() ? C.TIME_END_OF_SOURCE : 0; + } + + @Override + public long getBufferedPositionUs() { + return loadingFinished ? C.TIME_END_OF_SOURCE : 0; + } + + @Override + public long seekToUs(long positionUs) { + for (int i = 0; i < sampleStreams.size(); i++) { + sampleStreams.get(i).reset(); + } + return positionUs; + } + + @Override + public long getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters) { + return positionUs; + } + + // Loader.Callback implementation. + + @Override + public void onLoadCompleted(SourceLoadable loadable, long elapsedRealtimeMs, + long loadDurationMs) { + sampleSize = (int) loadable.dataSource.getBytesRead(); + sampleData = Assertions.checkNotNull(loadable.sampleData); + loadingFinished = true; + eventDispatcher.loadCompleted( + loadable.dataSpec, + loadable.dataSource.getLastOpenedUri(), + loadable.dataSource.getLastResponseHeaders(), + C.DATA_TYPE_MEDIA, + C.TRACK_TYPE_UNKNOWN, + format, + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + /* mediaStartTimeUs= */ 0, + durationUs, + elapsedRealtimeMs, + loadDurationMs, + sampleSize); + } + + @Override + public void onLoadCanceled(SourceLoadable loadable, long elapsedRealtimeMs, long loadDurationMs, + boolean released) { + eventDispatcher.loadCanceled( + loadable.dataSpec, + loadable.dataSource.getLastOpenedUri(), + loadable.dataSource.getLastResponseHeaders(), + C.DATA_TYPE_MEDIA, + C.TRACK_TYPE_UNKNOWN, + /* trackFormat= */ null, + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + /* mediaStartTimeUs= */ 0, + durationUs, + elapsedRealtimeMs, + loadDurationMs, + loadable.dataSource.getBytesRead()); + } + + @Override + public LoadErrorAction onLoadError( + SourceLoadable loadable, + long elapsedRealtimeMs, + long loadDurationMs, + IOException error, + int errorCount) { + long retryDelay = + loadErrorHandlingPolicy.getRetryDelayMsFor( + C.DATA_TYPE_MEDIA, loadDurationMs, error, errorCount); + boolean errorCanBePropagated = + retryDelay == C.TIME_UNSET + || errorCount + >= loadErrorHandlingPolicy.getMinimumLoadableRetryCount(C.DATA_TYPE_MEDIA); + + LoadErrorAction action; + if (treatLoadErrorsAsEndOfStream && errorCanBePropagated) { + loadingFinished = true; + action = Loader.DONT_RETRY; + } else { + action = + retryDelay != C.TIME_UNSET + ? Loader.createRetryAction(/* resetErrorCount= */ false, retryDelay) + : Loader.DONT_RETRY_FATAL; + } + eventDispatcher.loadError( + loadable.dataSpec, + loadable.dataSource.getLastOpenedUri(), + loadable.dataSource.getLastResponseHeaders(), + C.DATA_TYPE_MEDIA, + C.TRACK_TYPE_UNKNOWN, + format, + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + /* mediaStartTimeUs= */ 0, + durationUs, + elapsedRealtimeMs, + loadDurationMs, + loadable.dataSource.getBytesRead(), + error, + /* wasCanceled= */ !action.isRetry()); + return action; + } + + private final class SampleStreamImpl implements SampleStream { + + private static final int STREAM_STATE_SEND_FORMAT = 0; + private static final int STREAM_STATE_SEND_SAMPLE = 1; + private static final int STREAM_STATE_END_OF_STREAM = 2; + + private int streamState; + private boolean notifiedDownstreamFormat; + + public void reset() { + if (streamState == STREAM_STATE_END_OF_STREAM) { + streamState = STREAM_STATE_SEND_SAMPLE; + } + } + + @Override + public boolean isReady() { + return loadingFinished; + } + + @Override + public void maybeThrowError() throws IOException { + if (!treatLoadErrorsAsEndOfStream) { + loader.maybeThrowError(); + } + } + + @Override + public int readData(FormatHolder formatHolder, DecoderInputBuffer buffer, + boolean requireFormat) { + maybeNotifyDownstreamFormat(); + if (streamState == STREAM_STATE_END_OF_STREAM) { + buffer.addFlag(C.BUFFER_FLAG_END_OF_STREAM); + return C.RESULT_BUFFER_READ; + } else if (requireFormat || streamState == STREAM_STATE_SEND_FORMAT) { + formatHolder.format = format; + streamState = STREAM_STATE_SEND_SAMPLE; + return C.RESULT_FORMAT_READ; + } else if (loadingFinished) { + if (sampleData != null) { + buffer.addFlag(C.BUFFER_FLAG_KEY_FRAME); + buffer.timeUs = 0; + if (buffer.isFlagsOnly()) { + return C.RESULT_BUFFER_READ; + } + buffer.ensureSpaceForWrite(sampleSize); + buffer.data.put(sampleData, 0, sampleSize); + } else { + buffer.addFlag(C.BUFFER_FLAG_END_OF_STREAM); + } + streamState = STREAM_STATE_END_OF_STREAM; + return C.RESULT_BUFFER_READ; + } + return C.RESULT_NOTHING_READ; + } + + @Override + public int skipData(long positionUs) { + maybeNotifyDownstreamFormat(); + if (positionUs > 0 && streamState != STREAM_STATE_END_OF_STREAM) { + streamState = STREAM_STATE_END_OF_STREAM; + return 1; + } + return 0; + } + + private void maybeNotifyDownstreamFormat() { + if (!notifiedDownstreamFormat) { + eventDispatcher.downstreamFormatChanged( + MimeTypes.getTrackType(format.sampleMimeType), + format, + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + /* mediaTimeUs= */ 0); + notifiedDownstreamFormat = true; + } + } + } + + /* package */ static final class SourceLoadable implements Loadable { + + public final DataSpec dataSpec; + + private final StatsDataSource dataSource; + + @Nullable private byte[] sampleData; + + // the constructor does not initialize fields: sampleData + @SuppressWarnings("nullness:initialization.fields.uninitialized") + public SourceLoadable(DataSpec dataSpec, DataSource dataSource) { + this.dataSpec = dataSpec; + this.dataSource = new StatsDataSource(dataSource); + } + + @Override + public void cancelLoad() { + // Never happens. + } + + @Override + public void load() throws IOException, InterruptedException { + // We always load from the beginning, so reset bytesRead to 0. + dataSource.resetBytesRead(); + try { + // Create and open the input. + dataSource.open(dataSpec); + // Load the sample data. + int result = 0; + while (result != C.RESULT_END_OF_INPUT) { + int sampleSize = (int) dataSource.getBytesRead(); + if (sampleData == null) { + sampleData = new byte[INITIAL_SAMPLE_SIZE]; + } else if (sampleSize == sampleData.length) { + sampleData = Arrays.copyOf(sampleData, sampleData.length * 2); + } + result = dataSource.read(sampleData, sampleSize, sampleData.length - sampleSize); + } + } finally { + Util.closeQuietly(dataSource); + } + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SingleSampleMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SingleSampleMediaSource.java new file mode 100644 index 0000000000..01f35ef775 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/SingleSampleMediaSource.java @@ -0,0 +1,371 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.net.Uri; +import android.os.Handler; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultLoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; + +/** + * Loads data at a given {@link Uri} as a single sample belonging to a single {@link MediaPeriod}. + */ +public final class SingleSampleMediaSource extends BaseMediaSource { + + /** + * Listener of {@link SingleSampleMediaSource} events. + * + * @deprecated Use {@link MediaSourceEventListener}. + */ + @Deprecated + public interface EventListener { + + /** + * Called when an error occurs loading media data. + * + * @param sourceId The id of the reporting {@link SingleSampleMediaSource}. + * @param e The cause of the failure. + */ + void onLoadError(int sourceId, IOException e); + + } + + /** Factory for {@link SingleSampleMediaSource}. */ + public static final class Factory { + + private final DataSource.Factory dataSourceFactory; + + private LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private boolean treatLoadErrorsAsEndOfStream; + private boolean isCreateCalled; + @Nullable private Object tag; + + /** + * Creates a factory for {@link SingleSampleMediaSource}s. + * + * @param dataSourceFactory The factory from which the {@link DataSource} to read the media will + * be obtained. + */ + public Factory(DataSource.Factory dataSourceFactory) { + this.dataSourceFactory = Assertions.checkNotNull(dataSourceFactory); + loadErrorHandlingPolicy = new DefaultLoadErrorHandlingPolicy(); + } + + /** + * Sets a tag for the media source which will be published in the {@link Timeline} of the source + * as {@link Timeline.Window#tag}. + * + * @param tag A tag for the media source. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setTag(Object tag) { + Assertions.checkState(!isCreateCalled); + this.tag = tag; + return this; + } + + /** + * Sets the minimum number of times to retry if a loading error occurs. See {@link + * #setLoadErrorHandlingPolicy} for the default value. + * + *

Calling this method is equivalent to calling {@link #setLoadErrorHandlingPolicy} with + * {@link DefaultLoadErrorHandlingPolicy#DefaultLoadErrorHandlingPolicy(int) + * DefaultLoadErrorHandlingPolicy(minLoadableRetryCount)} + * + * @param minLoadableRetryCount The minimum number of times to retry if a loading error occurs. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + * @deprecated Use {@link #setLoadErrorHandlingPolicy(LoadErrorHandlingPolicy)} instead. + */ + @Deprecated + public Factory setMinLoadableRetryCount(int minLoadableRetryCount) { + return setLoadErrorHandlingPolicy(new DefaultLoadErrorHandlingPolicy(minLoadableRetryCount)); + } + + /** + * Sets the {@link LoadErrorHandlingPolicy}. The default value is created by calling {@link + * DefaultLoadErrorHandlingPolicy#DefaultLoadErrorHandlingPolicy()}. + * + *

Calling this method overrides any calls to {@link #setMinLoadableRetryCount(int)}. + * + * @param loadErrorHandlingPolicy A {@link LoadErrorHandlingPolicy}. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setLoadErrorHandlingPolicy(LoadErrorHandlingPolicy loadErrorHandlingPolicy) { + Assertions.checkState(!isCreateCalled); + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + return this; + } + + /** + * Sets whether load errors will be treated as end-of-stream signal (load errors will not be + * propagated). The default value is false. + * + * @param treatLoadErrorsAsEndOfStream If true, load errors will not be propagated by sample + * streams, treating them as ended instead. If false, load errors will be propagated + * normally by {@link SampleStream#maybeThrowError()}. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setTreatLoadErrorsAsEndOfStream(boolean treatLoadErrorsAsEndOfStream) { + Assertions.checkState(!isCreateCalled); + this.treatLoadErrorsAsEndOfStream = treatLoadErrorsAsEndOfStream; + return this; + } + + /** + * Returns a new {@link SingleSampleMediaSource} using the current parameters. + * + * @param uri The {@link Uri}. + * @param format The {@link Format} of the media stream. + * @param durationUs The duration of the media stream in microseconds. + * @return The new {@link SingleSampleMediaSource}. + */ + public SingleSampleMediaSource createMediaSource(Uri uri, Format format, long durationUs) { + isCreateCalled = true; + return new SingleSampleMediaSource( + uri, + dataSourceFactory, + format, + durationUs, + loadErrorHandlingPolicy, + treatLoadErrorsAsEndOfStream, + tag); + } + + /** + * @deprecated Use {@link #createMediaSource(Uri, Format, long)} and {@link + * #addEventListener(Handler, MediaSourceEventListener)} instead. + */ + @Deprecated + public SingleSampleMediaSource createMediaSource( + Uri uri, + Format format, + long durationUs, + @Nullable Handler eventHandler, + @Nullable MediaSourceEventListener eventListener) { + SingleSampleMediaSource mediaSource = createMediaSource(uri, format, durationUs); + if (eventHandler != null && eventListener != null) { + mediaSource.addEventListener(eventHandler, eventListener); + } + return mediaSource; + } + + } + + private final DataSpec dataSpec; + private final DataSource.Factory dataSourceFactory; + private final Format format; + private final long durationUs; + private final LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private final boolean treatLoadErrorsAsEndOfStream; + private final Timeline timeline; + @Nullable private final Object tag; + + @Nullable private TransferListener transferListener; + + /** + * @param uri The {@link Uri} of the media stream. + * @param dataSourceFactory The factory from which the {@link DataSource} to read the media will + * be obtained. + * @param format The {@link Format} associated with the output track. + * @param durationUs The duration of the media stream in microseconds. + * @deprecated Use {@link Factory} instead. + */ + @Deprecated + @SuppressWarnings("deprecation") + public SingleSampleMediaSource( + Uri uri, DataSource.Factory dataSourceFactory, Format format, long durationUs) { + this( + uri, + dataSourceFactory, + format, + durationUs, + DefaultLoadErrorHandlingPolicy.DEFAULT_MIN_LOADABLE_RETRY_COUNT); + } + + /** + * @param uri The {@link Uri} of the media stream. + * @param dataSourceFactory The factory from which the {@link DataSource} to read the media will + * be obtained. + * @param format The {@link Format} associated with the output track. + * @param durationUs The duration of the media stream in microseconds. + * @param minLoadableRetryCount The minimum number of times to retry if a loading error occurs. + * @deprecated Use {@link Factory} instead. + */ + @Deprecated + public SingleSampleMediaSource( + Uri uri, + DataSource.Factory dataSourceFactory, + Format format, + long durationUs, + int minLoadableRetryCount) { + this( + uri, + dataSourceFactory, + format, + durationUs, + new DefaultLoadErrorHandlingPolicy(minLoadableRetryCount), + /* treatLoadErrorsAsEndOfStream= */ false, + /* tag= */ null); + } + + /** + * @param uri The {@link Uri} of the media stream. + * @param dataSourceFactory The factory from which the {@link DataSource} to read the media will + * be obtained. + * @param format The {@link Format} associated with the output track. + * @param durationUs The duration of the media stream in microseconds. + * @param minLoadableRetryCount The minimum number of times to retry if a loading error occurs. + * @param eventHandler A handler for events. May be null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param eventSourceId An identifier that gets passed to {@code eventListener} methods. + * @param treatLoadErrorsAsEndOfStream If true, load errors will not be propagated by sample + * streams, treating them as ended instead. If false, load errors will be propagated normally + * by {@link SampleStream#maybeThrowError()}. + * @deprecated Use {@link Factory} instead. + */ + @Deprecated + @SuppressWarnings("deprecation") + public SingleSampleMediaSource( + Uri uri, + DataSource.Factory dataSourceFactory, + Format format, + long durationUs, + int minLoadableRetryCount, + Handler eventHandler, + EventListener eventListener, + int eventSourceId, + boolean treatLoadErrorsAsEndOfStream) { + this( + uri, + dataSourceFactory, + format, + durationUs, + new DefaultLoadErrorHandlingPolicy(minLoadableRetryCount), + treatLoadErrorsAsEndOfStream, + /* tag= */ null); + if (eventHandler != null && eventListener != null) { + addEventListener(eventHandler, new EventListenerWrapper(eventListener, eventSourceId)); + } + } + + private SingleSampleMediaSource( + Uri uri, + DataSource.Factory dataSourceFactory, + Format format, + long durationUs, + LoadErrorHandlingPolicy loadErrorHandlingPolicy, + boolean treatLoadErrorsAsEndOfStream, + @Nullable Object tag) { + this.dataSourceFactory = dataSourceFactory; + this.format = format; + this.durationUs = durationUs; + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + this.treatLoadErrorsAsEndOfStream = treatLoadErrorsAsEndOfStream; + this.tag = tag; + dataSpec = new DataSpec(uri, DataSpec.FLAG_ALLOW_GZIP); + timeline = + new SinglePeriodTimeline( + durationUs, + /* isSeekable= */ true, + /* isDynamic= */ false, + /* isLive= */ false, + /* manifest= */ null, + tag); + } + + // MediaSource implementation. + + @Override + @Nullable + public Object getTag() { + return tag; + } + + @Override + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + transferListener = mediaTransferListener; + refreshSourceInfo(timeline); + } + + @Override + public void maybeThrowSourceInfoRefreshError() throws IOException { + // Do nothing. + } + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + return new SingleSampleMediaPeriod( + dataSpec, + dataSourceFactory, + transferListener, + format, + durationUs, + loadErrorHandlingPolicy, + createEventDispatcher(id), + treatLoadErrorsAsEndOfStream); + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + ((SingleSampleMediaPeriod) mediaPeriod).release(); + } + + @Override + protected void releaseSourceInternal() { + // Do nothing. + } + + /** + * Wraps a deprecated {@link EventListener}, invoking its callback from the equivalent callback in + * {@link MediaSourceEventListener}. + */ + @Deprecated + @SuppressWarnings("deprecation") + private static final class EventListenerWrapper implements MediaSourceEventListener { + + private final EventListener eventListener; + private final int eventSourceId; + + public EventListenerWrapper(EventListener eventListener, int eventSourceId) { + this.eventListener = Assertions.checkNotNull(eventListener); + this.eventSourceId = eventSourceId; + } + + @Override + public void onLoadError( + int windowIndex, + @Nullable MediaPeriodId mediaPeriodId, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData, + IOException error, + boolean wasCanceled) { + eventListener.onLoadError(eventSourceId, error); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/TrackGroup.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/TrackGroup.java new file mode 100644 index 0000000000..566238dbdb --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/TrackGroup.java @@ -0,0 +1,142 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.Arrays; + +// TODO: Add an allowMultipleStreams boolean to indicate where the one stream per group restriction +// does not apply. +/** + * Defines a group of tracks exposed by a {@link MediaPeriod}. + * + *

A {@link MediaPeriod} is only able to provide one {@link SampleStream} corresponding to a + * group at any given time, however this {@link SampleStream} may adapt between multiple tracks + * within the group. + */ +public final class TrackGroup implements Parcelable { + + /** + * The number of tracks in the group. + */ + public final int length; + + private final Format[] formats; + + // Lazily initialized hashcode. + private int hashCode; + + /** + * @param formats The track formats. Must not be null, contain null elements or be of length 0. + */ + public TrackGroup(Format... formats) { + Assertions.checkState(formats.length > 0); + this.formats = formats; + this.length = formats.length; + } + + /* package */ TrackGroup(Parcel in) { + length = in.readInt(); + formats = new Format[length]; + for (int i = 0; i < length; i++) { + formats[i] = in.readParcelable(Format.class.getClassLoader()); + } + } + + /** + * Returns the format of the track at a given index. + * + * @param index The index of the track. + * @return The track's format. + */ + public Format getFormat(int index) { + return formats[index]; + } + + /** + * Returns the index of the track with the given format in the group. The format is located by + * identity so, for example, {@code group.indexOf(group.getFormat(index)) == index} even if + * multiple tracks have formats that contain the same values. + * + * @param format The format. + * @return The index of the track, or {@link C#INDEX_UNSET} if no such track exists. + */ + @SuppressWarnings("ReferenceEquality") + public int indexOf(Format format) { + for (int i = 0; i < formats.length; i++) { + if (format == formats[i]) { + return i; + } + } + return C.INDEX_UNSET; + } + + @Override + public int hashCode() { + if (hashCode == 0) { + int result = 17; + result = 31 * result + Arrays.hashCode(formats); + hashCode = result; + } + return hashCode; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + TrackGroup other = (TrackGroup) obj; + return length == other.length && Arrays.equals(formats, other.formats); + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeInt(length); + for (int i = 0; i < length; i++) { + dest.writeParcelable(formats[i], 0); + } + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public TrackGroup createFromParcel(Parcel in) { + return new TrackGroup(in); + } + + @Override + public TrackGroup[] newArray(int size) { + return new TrackGroup[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/TrackGroupArray.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/TrackGroupArray.java new file mode 100644 index 0000000000..103a45080e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/TrackGroupArray.java @@ -0,0 +1,141 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.util.Arrays; + +/** An array of {@link TrackGroup}s exposed by a {@link MediaPeriod}. */ +public final class TrackGroupArray implements Parcelable { + + /** + * The empty array. + */ + public static final TrackGroupArray EMPTY = new TrackGroupArray(); + + /** + * The number of groups in the array. Greater than or equal to zero. + */ + public final int length; + + private final TrackGroup[] trackGroups; + + // Lazily initialized hashcode. + private int hashCode; + + /** + * @param trackGroups The groups. Must not be null or contain null elements, but may be empty. + */ + public TrackGroupArray(TrackGroup... trackGroups) { + this.trackGroups = trackGroups; + this.length = trackGroups.length; + } + + /* package */ TrackGroupArray(Parcel in) { + length = in.readInt(); + trackGroups = new TrackGroup[length]; + for (int i = 0; i < length; i++) { + trackGroups[i] = in.readParcelable(TrackGroup.class.getClassLoader()); + } + } + + /** + * Returns the group at a given index. + * + * @param index The index of the group. + * @return The group. + */ + public TrackGroup get(int index) { + return trackGroups[index]; + } + + /** + * Returns the index of a group within the array. + * + * @param group The group. + * @return The index of the group, or {@link C#INDEX_UNSET} if no such group exists. + */ + @SuppressWarnings("ReferenceEquality") + public int indexOf(TrackGroup group) { + for (int i = 0; i < length; i++) { + // Suppressed reference equality warning because this is looking for the index of a specific + // TrackGroup object, not the index of a potential equal TrackGroup. + if (trackGroups[i] == group) { + return i; + } + } + return C.INDEX_UNSET; + } + + /** + * Returns whether this track group array is empty. + */ + public boolean isEmpty() { + return length == 0; + } + + @Override + public int hashCode() { + if (hashCode == 0) { + hashCode = Arrays.hashCode(trackGroups); + } + return hashCode; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + TrackGroupArray other = (TrackGroupArray) obj; + return length == other.length && Arrays.equals(trackGroups, other.trackGroups); + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeInt(length); + for (int i = 0; i < length; i++) { + dest.writeParcelable(trackGroups[i], 0); + } + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public TrackGroupArray createFromParcel(Parcel in) { + return new TrackGroupArray(in); + } + + @Override + public TrackGroupArray[] newArray(int size) { + return new TrackGroupArray[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/UnrecognizedInputFormatException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/UnrecognizedInputFormatException.java new file mode 100644 index 0000000000..ccb9d350fc --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/UnrecognizedInputFormatException.java @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source; + +import android.net.Uri; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; + +/** + * Thrown if the input format was not recognized. + */ +public class UnrecognizedInputFormatException extends ParserException { + + /** + * The {@link Uri} from which the unrecognized data was read. + */ + public final Uri uri; + + /** + * @param message The detail message for the exception. + * @param uri The {@link Uri} from which the unrecognized data was read. + */ + public UnrecognizedInputFormatException(String message, Uri uri) { + super(message); + this.uri = uri; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/AdPlaybackState.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/AdPlaybackState.java new file mode 100644 index 0000000000..83b5b1bc40 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/AdPlaybackState.java @@ -0,0 +1,486 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.ads; + +import android.net.Uri; +import androidx.annotation.CheckResult; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Arrays; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * Represents ad group times relative to the start of the media and information on the state and + * URIs of ads within each ad group. + * + *

Instances are immutable. Call the {@code with*} methods to get new instances that have the + * required changes. + */ +public final class AdPlaybackState { + + /** + * Represents a group of ads, with information about their states. + * + *

Instances are immutable. Call the {@code with*} methods to get new instances that have the + * required changes. + */ + public static final class AdGroup { + + /** The number of ads in the ad group, or {@link C#LENGTH_UNSET} if unknown. */ + public final int count; + /** The URI of each ad in the ad group. */ + public final @NullableType Uri[] uris; + /** The state of each ad in the ad group. */ + @AdState public final int[] states; + /** The durations of each ad in the ad group, in microseconds. */ + public final long[] durationsUs; + + /** Creates a new ad group with an unspecified number of ads. */ + public AdGroup() { + this( + /* count= */ C.LENGTH_UNSET, + /* states= */ new int[0], + /* uris= */ new Uri[0], + /* durationsUs= */ new long[0]); + } + + private AdGroup( + int count, @AdState int[] states, @NullableType Uri[] uris, long[] durationsUs) { + Assertions.checkArgument(states.length == uris.length); + this.count = count; + this.states = states; + this.uris = uris; + this.durationsUs = durationsUs; + } + + /** + * Returns the index of the first ad in the ad group that should be played, or {@link #count} if + * no ads should be played. + */ + public int getFirstAdIndexToPlay() { + return getNextAdIndexToPlay(-1); + } + + /** + * Returns the index of the next ad in the ad group that should be played after playing {@code + * lastPlayedAdIndex}, or {@link #count} if no later ads should be played. + */ + public int getNextAdIndexToPlay(int lastPlayedAdIndex) { + int nextAdIndexToPlay = lastPlayedAdIndex + 1; + while (nextAdIndexToPlay < states.length) { + if (states[nextAdIndexToPlay] == AD_STATE_UNAVAILABLE + || states[nextAdIndexToPlay] == AD_STATE_AVAILABLE) { + break; + } + nextAdIndexToPlay++; + } + return nextAdIndexToPlay; + } + + /** Returns whether the ad group has at least one ad that still needs to be played. */ + public boolean hasUnplayedAds() { + return count == C.LENGTH_UNSET || getFirstAdIndexToPlay() < count; + } + + @Override + public boolean equals(@Nullable Object o) { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + AdGroup adGroup = (AdGroup) o; + return count == adGroup.count + && Arrays.equals(uris, adGroup.uris) + && Arrays.equals(states, adGroup.states) + && Arrays.equals(durationsUs, adGroup.durationsUs); + } + + @Override + public int hashCode() { + int result = count; + result = 31 * result + Arrays.hashCode(uris); + result = 31 * result + Arrays.hashCode(states); + result = 31 * result + Arrays.hashCode(durationsUs); + return result; + } + + /** + * Returns a new instance with the ad count set to {@code count}. This method may only be called + * if this instance's ad count has not yet been specified. + */ + @CheckResult + public AdGroup withAdCount(int count) { + Assertions.checkArgument(this.count == C.LENGTH_UNSET && states.length <= count); + @AdState int[] states = copyStatesWithSpaceForAdCount(this.states, count); + long[] durationsUs = copyDurationsUsWithSpaceForAdCount(this.durationsUs, count); + @NullableType Uri[] uris = Arrays.copyOf(this.uris, count); + return new AdGroup(count, states, uris, durationsUs); + } + + /** + * Returns a new instance with the specified {@code uri} set for the specified ad, and the ad + * marked as {@link #AD_STATE_AVAILABLE}. The specified ad must currently be in {@link + * #AD_STATE_UNAVAILABLE}, which is the default state. + * + *

This instance's ad count may be unknown, in which case {@code index} must be less than the + * ad count specified later. Otherwise, {@code index} must be less than the current ad count. + */ + @CheckResult + public AdGroup withAdUri(Uri uri, int index) { + Assertions.checkArgument(count == C.LENGTH_UNSET || index < count); + @AdState int[] states = copyStatesWithSpaceForAdCount(this.states, index + 1); + Assertions.checkArgument(states[index] == AD_STATE_UNAVAILABLE); + long[] durationsUs = + this.durationsUs.length == states.length + ? this.durationsUs + : copyDurationsUsWithSpaceForAdCount(this.durationsUs, states.length); + @NullableType Uri[] uris = Arrays.copyOf(this.uris, states.length); + uris[index] = uri; + states[index] = AD_STATE_AVAILABLE; + return new AdGroup(count, states, uris, durationsUs); + } + + /** + * Returns a new instance with the specified ad set to the specified {@code state}. The ad + * specified must currently either be in {@link #AD_STATE_UNAVAILABLE} or {@link + * #AD_STATE_AVAILABLE}. + * + *

This instance's ad count may be unknown, in which case {@code index} must be less than the + * ad count specified later. Otherwise, {@code index} must be less than the current ad count. + */ + @CheckResult + public AdGroup withAdState(@AdState int state, int index) { + Assertions.checkArgument(count == C.LENGTH_UNSET || index < count); + @AdState int[] states = copyStatesWithSpaceForAdCount(this.states, index + 1); + Assertions.checkArgument( + states[index] == AD_STATE_UNAVAILABLE + || states[index] == AD_STATE_AVAILABLE + || states[index] == state); + long[] durationsUs = + this.durationsUs.length == states.length + ? this.durationsUs + : copyDurationsUsWithSpaceForAdCount(this.durationsUs, states.length); + @NullableType + Uri[] uris = + this.uris.length == states.length ? this.uris : Arrays.copyOf(this.uris, states.length); + states[index] = state; + return new AdGroup(count, states, uris, durationsUs); + } + + /** Returns a new instance with the specified ad durations, in microseconds. */ + @CheckResult + public AdGroup withAdDurationsUs(long[] durationsUs) { + Assertions.checkArgument(count == C.LENGTH_UNSET || durationsUs.length <= this.uris.length); + if (durationsUs.length < this.uris.length) { + durationsUs = copyDurationsUsWithSpaceForAdCount(durationsUs, uris.length); + } + return new AdGroup(count, states, uris, durationsUs); + } + + /** + * Returns an instance with all unavailable and available ads marked as skipped. If the ad count + * hasn't been set, it will be set to zero. + */ + @CheckResult + public AdGroup withAllAdsSkipped() { + if (count == C.LENGTH_UNSET) { + return new AdGroup( + /* count= */ 0, + /* states= */ new int[0], + /* uris= */ new Uri[0], + /* durationsUs= */ new long[0]); + } + int count = this.states.length; + @AdState int[] states = Arrays.copyOf(this.states, count); + for (int i = 0; i < count; i++) { + if (states[i] == AD_STATE_AVAILABLE || states[i] == AD_STATE_UNAVAILABLE) { + states[i] = AD_STATE_SKIPPED; + } + } + return new AdGroup(count, states, uris, durationsUs); + } + + @CheckResult + private static @AdState int[] copyStatesWithSpaceForAdCount(@AdState int[] states, int count) { + int oldStateCount = states.length; + int newStateCount = Math.max(count, oldStateCount); + states = Arrays.copyOf(states, newStateCount); + Arrays.fill(states, oldStateCount, newStateCount, AD_STATE_UNAVAILABLE); + return states; + } + + @CheckResult + private static long[] copyDurationsUsWithSpaceForAdCount(long[] durationsUs, int count) { + int oldDurationsUsCount = durationsUs.length; + int newDurationsUsCount = Math.max(count, oldDurationsUsCount); + durationsUs = Arrays.copyOf(durationsUs, newDurationsUsCount); + Arrays.fill(durationsUs, oldDurationsUsCount, newDurationsUsCount, C.TIME_UNSET); + return durationsUs; + } + } + + /** + * Represents the state of an ad in an ad group. One of {@link #AD_STATE_UNAVAILABLE}, {@link + * #AD_STATE_AVAILABLE}, {@link #AD_STATE_SKIPPED}, {@link #AD_STATE_PLAYED} or {@link + * #AD_STATE_ERROR}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + AD_STATE_UNAVAILABLE, + AD_STATE_AVAILABLE, + AD_STATE_SKIPPED, + AD_STATE_PLAYED, + AD_STATE_ERROR, + }) + public @interface AdState {} + /** State for an ad that does not yet have a URL. */ + public static final int AD_STATE_UNAVAILABLE = 0; + /** State for an ad that has a URL but has not yet been played. */ + public static final int AD_STATE_AVAILABLE = 1; + /** State for an ad that was skipped. */ + public static final int AD_STATE_SKIPPED = 2; + /** State for an ad that was played in full. */ + public static final int AD_STATE_PLAYED = 3; + /** State for an ad that could not be loaded. */ + public static final int AD_STATE_ERROR = 4; + + /** Ad playback state with no ads. */ + public static final AdPlaybackState NONE = new AdPlaybackState(); + + /** The number of ad groups. */ + public final int adGroupCount; + /** + * The times of ad groups, in microseconds. A final element with the value {@link + * C#TIME_END_OF_SOURCE} indicates a postroll ad. + */ + public final long[] adGroupTimesUs; + /** The ad groups. */ + public final AdGroup[] adGroups; + /** The position offset in the first unplayed ad at which to begin playback, in microseconds. */ + public final long adResumePositionUs; + /** The content duration in microseconds, if known. {@link C#TIME_UNSET} otherwise. */ + public final long contentDurationUs; + + /** + * Creates a new ad playback state with the specified ad group times. + * + * @param adGroupTimesUs The times of ad groups in microseconds. A final element with the value + * {@link C#TIME_END_OF_SOURCE} indicates that there is a postroll ad. + */ + public AdPlaybackState(long... adGroupTimesUs) { + int count = adGroupTimesUs.length; + adGroupCount = count; + this.adGroupTimesUs = Arrays.copyOf(adGroupTimesUs, count); + this.adGroups = new AdGroup[count]; + for (int i = 0; i < count; i++) { + adGroups[i] = new AdGroup(); + } + adResumePositionUs = 0; + contentDurationUs = C.TIME_UNSET; + } + + private AdPlaybackState( + long[] adGroupTimesUs, AdGroup[] adGroups, long adResumePositionUs, long contentDurationUs) { + adGroupCount = adGroups.length; + this.adGroupTimesUs = adGroupTimesUs; + this.adGroups = adGroups; + this.adResumePositionUs = adResumePositionUs; + this.contentDurationUs = contentDurationUs; + } + + /** + * Returns the index of the ad group at or before {@code positionUs}, if that ad group is + * unplayed. Returns {@link C#INDEX_UNSET} if the ad group at or before {@code positionUs} has no + * ads remaining to be played, or if there is no such ad group. + * + * @param positionUs The position at or before which to find an ad group, in microseconds, or + * {@link C#TIME_END_OF_SOURCE} for the end of the stream (in which case the index of any + * unplayed postroll ad group will be returned). + * @return The index of the ad group, or {@link C#INDEX_UNSET}. + */ + public int getAdGroupIndexForPositionUs(long positionUs) { + // Use a linear search as the array elements may not be increasing due to TIME_END_OF_SOURCE. + // In practice we expect there to be few ad groups so the search shouldn't be expensive. + int index = adGroupTimesUs.length - 1; + while (index >= 0 && isPositionBeforeAdGroup(positionUs, index)) { + index--; + } + return index >= 0 && adGroups[index].hasUnplayedAds() ? index : C.INDEX_UNSET; + } + + /** + * Returns the index of the next ad group after {@code positionUs} that has ads remaining to be + * played. Returns {@link C#INDEX_UNSET} if there is no such ad group. + * + * @param positionUs The position after which to find an ad group, in microseconds, or {@link + * C#TIME_END_OF_SOURCE} for the end of the stream (in which case there can be no ad group + * after the position). + * @param periodDurationUs The duration of the containing period in microseconds, or {@link + * C#TIME_UNSET} if not known. + * @return The index of the ad group, or {@link C#INDEX_UNSET}. + */ + public int getAdGroupIndexAfterPositionUs(long positionUs, long periodDurationUs) { + if (positionUs == C.TIME_END_OF_SOURCE + || (periodDurationUs != C.TIME_UNSET && positionUs >= periodDurationUs)) { + return C.INDEX_UNSET; + } + // Use a linear search as the array elements may not be increasing due to TIME_END_OF_SOURCE. + // In practice we expect there to be few ad groups so the search shouldn't be expensive. + int index = 0; + while (index < adGroupTimesUs.length + && adGroupTimesUs[index] != C.TIME_END_OF_SOURCE + && (positionUs >= adGroupTimesUs[index] || !adGroups[index].hasUnplayedAds())) { + index++; + } + return index < adGroupTimesUs.length ? index : C.INDEX_UNSET; + } + + /** + * Returns an instance with the number of ads in {@code adGroupIndex} resolved to {@code adCount}. + * The ad count must be greater than zero. + */ + @CheckResult + public AdPlaybackState withAdCount(int adGroupIndex, int adCount) { + Assertions.checkArgument(adCount > 0); + if (adGroups[adGroupIndex].count == adCount) { + return this; + } + AdGroup[] adGroups = Util.nullSafeArrayCopy(this.adGroups, this.adGroups.length); + adGroups[adGroupIndex] = this.adGroups[adGroupIndex].withAdCount(adCount); + return new AdPlaybackState(adGroupTimesUs, adGroups, adResumePositionUs, contentDurationUs); + } + + /** Returns an instance with the specified ad URI. */ + @CheckResult + public AdPlaybackState withAdUri(int adGroupIndex, int adIndexInAdGroup, Uri uri) { + AdGroup[] adGroups = Util.nullSafeArrayCopy(this.adGroups, this.adGroups.length); + adGroups[adGroupIndex] = adGroups[adGroupIndex].withAdUri(uri, adIndexInAdGroup); + return new AdPlaybackState(adGroupTimesUs, adGroups, adResumePositionUs, contentDurationUs); + } + + /** Returns an instance with the specified ad marked as played. */ + @CheckResult + public AdPlaybackState withPlayedAd(int adGroupIndex, int adIndexInAdGroup) { + AdGroup[] adGroups = Util.nullSafeArrayCopy(this.adGroups, this.adGroups.length); + adGroups[adGroupIndex] = adGroups[adGroupIndex].withAdState(AD_STATE_PLAYED, adIndexInAdGroup); + return new AdPlaybackState(adGroupTimesUs, adGroups, adResumePositionUs, contentDurationUs); + } + + /** Returns an instance with the specified ad marked as skipped. */ + @CheckResult + public AdPlaybackState withSkippedAd(int adGroupIndex, int adIndexInAdGroup) { + AdGroup[] adGroups = Util.nullSafeArrayCopy(this.adGroups, this.adGroups.length); + adGroups[adGroupIndex] = adGroups[adGroupIndex].withAdState(AD_STATE_SKIPPED, adIndexInAdGroup); + return new AdPlaybackState(adGroupTimesUs, adGroups, adResumePositionUs, contentDurationUs); + } + + /** Returns an instance with the specified ad marked as having a load error. */ + @CheckResult + public AdPlaybackState withAdLoadError(int adGroupIndex, int adIndexInAdGroup) { + AdGroup[] adGroups = Util.nullSafeArrayCopy(this.adGroups, this.adGroups.length); + adGroups[adGroupIndex] = adGroups[adGroupIndex].withAdState(AD_STATE_ERROR, adIndexInAdGroup); + return new AdPlaybackState(adGroupTimesUs, adGroups, adResumePositionUs, contentDurationUs); + } + + /** + * Returns an instance with all ads in the specified ad group skipped (except for those already + * marked as played or in the error state). + */ + @CheckResult + public AdPlaybackState withSkippedAdGroup(int adGroupIndex) { + AdGroup[] adGroups = Util.nullSafeArrayCopy(this.adGroups, this.adGroups.length); + adGroups[adGroupIndex] = adGroups[adGroupIndex].withAllAdsSkipped(); + return new AdPlaybackState(adGroupTimesUs, adGroups, adResumePositionUs, contentDurationUs); + } + + /** Returns an instance with the specified ad durations, in microseconds. */ + @CheckResult + public AdPlaybackState withAdDurationsUs(long[][] adDurationUs) { + AdGroup[] adGroups = Util.nullSafeArrayCopy(this.adGroups, this.adGroups.length); + for (int adGroupIndex = 0; adGroupIndex < adGroupCount; adGroupIndex++) { + adGroups[adGroupIndex] = adGroups[adGroupIndex].withAdDurationsUs(adDurationUs[adGroupIndex]); + } + return new AdPlaybackState(adGroupTimesUs, adGroups, adResumePositionUs, contentDurationUs); + } + + /** Returns an instance with the specified ad resume position, in microseconds. */ + @CheckResult + public AdPlaybackState withAdResumePositionUs(long adResumePositionUs) { + if (this.adResumePositionUs == adResumePositionUs) { + return this; + } else { + return new AdPlaybackState(adGroupTimesUs, adGroups, adResumePositionUs, contentDurationUs); + } + } + + /** Returns an instance with the specified content duration, in microseconds. */ + @CheckResult + public AdPlaybackState withContentDurationUs(long contentDurationUs) { + if (this.contentDurationUs == contentDurationUs) { + return this; + } else { + return new AdPlaybackState(adGroupTimesUs, adGroups, adResumePositionUs, contentDurationUs); + } + } + + @Override + public boolean equals(@Nullable Object o) { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + AdPlaybackState that = (AdPlaybackState) o; + return adGroupCount == that.adGroupCount + && adResumePositionUs == that.adResumePositionUs + && contentDurationUs == that.contentDurationUs + && Arrays.equals(adGroupTimesUs, that.adGroupTimesUs) + && Arrays.equals(adGroups, that.adGroups); + } + + @Override + public int hashCode() { + int result = adGroupCount; + result = 31 * result + (int) adResumePositionUs; + result = 31 * result + (int) contentDurationUs; + result = 31 * result + Arrays.hashCode(adGroupTimesUs); + result = 31 * result + Arrays.hashCode(adGroups); + return result; + } + + private boolean isPositionBeforeAdGroup(long positionUs, int adGroupIndex) { + if (positionUs == C.TIME_END_OF_SOURCE) { + // The end of the content is at (but not before) any postroll ad, and after any other ads. + return false; + } + long adGroupPositionUs = adGroupTimesUs[adGroupIndex]; + if (adGroupPositionUs == C.TIME_END_OF_SOURCE) { + return contentDurationUs == C.TIME_UNSET || positionUs < contentDurationUs; + } else { + return positionUs < adGroupPositionUs; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/AdsLoader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/AdsLoader.java new file mode 100644 index 0000000000..12ffb8ec0d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/AdsLoader.java @@ -0,0 +1,150 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.ads; + +import android.view.View; +import android.view.ViewGroup; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ads.AdsMediaSource.AdLoadException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import java.io.IOException; + +/** + * Interface for loaders of ads, which can be used with {@link AdsMediaSource}. + * + *

Ads loaders notify the {@link AdsMediaSource} about events via {@link EventListener}. In + * particular, implementations must call {@link EventListener#onAdPlaybackState(AdPlaybackState)} + * with a new copy of the current {@link AdPlaybackState} whenever further information about ads + * becomes known (for example, when an ad media URI is available, or an ad has played to the end). + * + *

{@link #start(EventListener, AdViewProvider)} will be called when the ads media source first + * initializes, at which point the loader can request ads. If the player enters the background, + * {@link #stop()} will be called. Loaders should maintain any ad playback state in preparation for + * a later call to {@link #start(EventListener, AdViewProvider)}. If an ad is playing when the + * player is detached, update the ad playback state with the current playback position using {@link + * AdPlaybackState#withAdResumePositionUs(long)}. + * + *

If {@link EventListener#onAdPlaybackState(AdPlaybackState)} has been called, the + * implementation of {@link #start(EventListener, AdViewProvider)} should invoke the same listener + * to provide the existing playback state to the new player. + */ +public interface AdsLoader { + + /** Listener for ads loader events. All methods are called on the main thread. */ + interface EventListener { + + /** + * Called when the ad playback state has been updated. + * + * @param adPlaybackState The new ad playback state. + */ + default void onAdPlaybackState(AdPlaybackState adPlaybackState) {} + + /** + * Called when there was an error loading ads. + * + * @param error The error. + * @param dataSpec The data spec associated with the load error. + */ + default void onAdLoadError(AdLoadException error, DataSpec dataSpec) {} + + /** Called when the user clicks through an ad (for example, following a 'learn more' link). */ + default void onAdClicked() {} + + /** Called when the user taps a non-clickthrough part of an ad. */ + default void onAdTapped() {} + } + + /** Provides views for the ad UI. */ + interface AdViewProvider { + + /** Returns the {@link ViewGroup} on top of the player that will show any ad UI. */ + ViewGroup getAdViewGroup(); + + /** + * Returns an array of views that are shown on top of the ad view group, but that are essential + * for controlling playback and should be excluded from ad viewability measurements by the + * {@link AdsLoader} (if it supports this). + * + *

Each view must be either a fully transparent overlay (for capturing touch events), or a + * small piece of transient UI that is essential to the user experience of playback (such as a + * button to pause/resume playback or a transient full-screen or cast button). For more + * information see the documentation for your ads loader. + */ + View[] getAdOverlayViews(); + } + + // Methods called by the application. + + /** + * Sets the player that will play the loaded ads. + * + *

This method must be called before the player is prepared with media using this ads loader. + * + *

This method must also be called on the main thread and only players which are accessed on + * the main thread are supported ({@code player.getApplicationLooper() == + * Looper.getMainLooper()}). + * + * @param player The player instance that will play the loaded ads. May be null to delete the + * reference to a previously set player. + */ + void setPlayer(@Nullable Player player); + + /** + * Releases the loader. Must be called by the application on the main thread when the instance is + * no longer needed. + */ + void release(); + + // Methods called by AdsMediaSource. + + /** + * Sets the supported content types for ad media. Must be called before the first call to {@link + * #start(EventListener, AdViewProvider)}. Subsequent calls may be ignored. Called on the main + * thread by {@link AdsMediaSource}. + * + * @param contentTypes The supported content types for ad media. Each element must be one of + * {@link C#TYPE_DASH}, {@link C#TYPE_HLS}, {@link C#TYPE_SS} and {@link C#TYPE_OTHER}. + */ + void setSupportedContentTypes(@C.ContentType int... contentTypes); + + /** + * Starts using the ads loader for playback. Called on the main thread by {@link AdsMediaSource}. + * + * @param eventListener Listener for ads loader events. + * @param adViewProvider Provider of views for the ad UI. + */ + void start(EventListener eventListener, AdViewProvider adViewProvider); + + /** + * Stops using the ads loader for playback and deregisters the event listener. Called on the main + * thread by {@link AdsMediaSource}. + */ + void stop(); + + /** + * Notifies the ads loader that the player was not able to prepare media for a given ad. + * Implementations should update the ad playback state as the specified ad has failed to load. + * Called on the main thread by {@link AdsMediaSource}. + * + * @param adGroupIndex The index of the ad group. + * @param adIndexInAdGroup The index of the ad in the ad group. + * @param exception The preparation error. + */ + void handlePrepareError(int adGroupIndex, int adIndexInAdGroup, IOException exception); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/AdsMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/AdsMediaSource.java new file mode 100644 index 0000000000..02c33a3d34 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/AdsMediaSource.java @@ -0,0 +1,439 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.ads; + +import android.net.Uri; +import android.os.Handler; +import android.os.Looper; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.CompositeMediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MaskingMediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.LoadEventInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.MediaLoadData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ProgressiveMediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * A {@link MediaSource} that inserts ads linearly with a provided content media source. This source + * cannot be used as a child source in a composition. It must be the top-level source used to + * prepare the player. + */ +public final class AdsMediaSource extends CompositeMediaSource { + + /** + * Wrapper for exceptions that occur while loading ads, which are notified via {@link + * MediaSourceEventListener#onLoadError(int, MediaPeriodId, LoadEventInfo, MediaLoadData, + * IOException, boolean)}. + */ + public static final class AdLoadException extends IOException { + + /** + * Types of ad load exceptions. One of {@link #TYPE_AD}, {@link #TYPE_AD_GROUP}, {@link + * #TYPE_ALL_ADS} or {@link #TYPE_UNEXPECTED}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({TYPE_AD, TYPE_AD_GROUP, TYPE_ALL_ADS, TYPE_UNEXPECTED}) + public @interface Type {} + /** Type for when an ad failed to load. The ad will be skipped. */ + public static final int TYPE_AD = 0; + /** Type for when an ad group failed to load. The ad group will be skipped. */ + public static final int TYPE_AD_GROUP = 1; + /** Type for when all ad groups failed to load. All ads will be skipped. */ + public static final int TYPE_ALL_ADS = 2; + /** Type for when an unexpected error occurred while loading ads. All ads will be skipped. */ + public static final int TYPE_UNEXPECTED = 3; + + /** Returns a new ad load exception of {@link #TYPE_AD}. */ + public static AdLoadException createForAd(Exception error) { + return new AdLoadException(TYPE_AD, error); + } + + /** Returns a new ad load exception of {@link #TYPE_AD_GROUP}. */ + public static AdLoadException createForAdGroup(Exception error, int adGroupIndex) { + return new AdLoadException( + TYPE_AD_GROUP, new IOException("Failed to load ad group " + adGroupIndex, error)); + } + + /** Returns a new ad load exception of {@link #TYPE_ALL_ADS}. */ + public static AdLoadException createForAllAds(Exception error) { + return new AdLoadException(TYPE_ALL_ADS, error); + } + + /** Returns a new ad load exception of {@link #TYPE_UNEXPECTED}. */ + public static AdLoadException createForUnexpected(RuntimeException error) { + return new AdLoadException(TYPE_UNEXPECTED, error); + } + + /** The {@link Type} of the ad load exception. */ + public final @Type int type; + + private AdLoadException(@Type int type, Exception cause) { + super(cause); + this.type = type; + } + + /** + * Returns the {@link RuntimeException} that caused the exception if its type is {@link + * #TYPE_UNEXPECTED}. + */ + public RuntimeException getRuntimeExceptionForUnexpected() { + Assertions.checkState(type == TYPE_UNEXPECTED); + return (RuntimeException) Assertions.checkNotNull(getCause()); + } + } + + // Used to identify the content "child" source for CompositeMediaSource. + private static final MediaPeriodId DUMMY_CONTENT_MEDIA_PERIOD_ID = + new MediaPeriodId(/* periodUid= */ new Object()); + + private final MediaSource contentMediaSource; + private final MediaSourceFactory adMediaSourceFactory; + private final AdsLoader adsLoader; + private final AdsLoader.AdViewProvider adViewProvider; + private final Handler mainHandler; + private final Map> maskingMediaPeriodByAdMediaSource; + private final Timeline.Period period; + + // Accessed on the player thread. + @Nullable private ComponentListener componentListener; + @Nullable private Timeline contentTimeline; + @Nullable private AdPlaybackState adPlaybackState; + private @NullableType MediaSource[][] adGroupMediaSources; + private @NullableType Timeline[][] adGroupTimelines; + + /** + * Constructs a new source that inserts ads linearly with the content specified by {@code + * contentMediaSource}. Ad media is loaded using {@link ProgressiveMediaSource}. + * + * @param contentMediaSource The {@link MediaSource} providing the content to play. + * @param dataSourceFactory Factory for data sources used to load ad media. + * @param adsLoader The loader for ads. + * @param adViewProvider Provider of views for the ad UI. + */ + public AdsMediaSource( + MediaSource contentMediaSource, + DataSource.Factory dataSourceFactory, + AdsLoader adsLoader, + AdsLoader.AdViewProvider adViewProvider) { + this( + contentMediaSource, + new ProgressiveMediaSource.Factory(dataSourceFactory), + adsLoader, + adViewProvider); + } + + /** + * Constructs a new source that inserts ads linearly with the content specified by {@code + * contentMediaSource}. + * + * @param contentMediaSource The {@link MediaSource} providing the content to play. + * @param adMediaSourceFactory Factory for media sources used to load ad media. + * @param adsLoader The loader for ads. + * @param adViewProvider Provider of views for the ad UI. + */ + public AdsMediaSource( + MediaSource contentMediaSource, + MediaSourceFactory adMediaSourceFactory, + AdsLoader adsLoader, + AdsLoader.AdViewProvider adViewProvider) { + this.contentMediaSource = contentMediaSource; + this.adMediaSourceFactory = adMediaSourceFactory; + this.adsLoader = adsLoader; + this.adViewProvider = adViewProvider; + mainHandler = new Handler(Looper.getMainLooper()); + maskingMediaPeriodByAdMediaSource = new HashMap<>(); + period = new Timeline.Period(); + adGroupMediaSources = new MediaSource[0][]; + adGroupTimelines = new Timeline[0][]; + adsLoader.setSupportedContentTypes(adMediaSourceFactory.getSupportedTypes()); + } + + @Override + @Nullable + public Object getTag() { + return contentMediaSource.getTag(); + } + + @Override + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + super.prepareSourceInternal(mediaTransferListener); + ComponentListener componentListener = new ComponentListener(); + this.componentListener = componentListener; + prepareChildSource(DUMMY_CONTENT_MEDIA_PERIOD_ID, contentMediaSource); + mainHandler.post(() -> adsLoader.start(componentListener, adViewProvider)); + } + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + AdPlaybackState adPlaybackState = Assertions.checkNotNull(this.adPlaybackState); + if (adPlaybackState.adGroupCount > 0 && id.isAd()) { + int adGroupIndex = id.adGroupIndex; + int adIndexInAdGroup = id.adIndexInAdGroup; + Uri adUri = + Assertions.checkNotNull(adPlaybackState.adGroups[adGroupIndex].uris[adIndexInAdGroup]); + if (adGroupMediaSources[adGroupIndex].length <= adIndexInAdGroup) { + int adCount = adIndexInAdGroup + 1; + adGroupMediaSources[adGroupIndex] = + Arrays.copyOf(adGroupMediaSources[adGroupIndex], adCount); + adGroupTimelines[adGroupIndex] = Arrays.copyOf(adGroupTimelines[adGroupIndex], adCount); + } + MediaSource mediaSource = adGroupMediaSources[adGroupIndex][adIndexInAdGroup]; + if (mediaSource == null) { + mediaSource = adMediaSourceFactory.createMediaSource(adUri); + adGroupMediaSources[adGroupIndex][adIndexInAdGroup] = mediaSource; + maskingMediaPeriodByAdMediaSource.put(mediaSource, new ArrayList<>()); + prepareChildSource(id, mediaSource); + } + MaskingMediaPeriod maskingMediaPeriod = + new MaskingMediaPeriod(mediaSource, id, allocator, startPositionUs); + maskingMediaPeriod.setPrepareErrorListener( + new AdPrepareErrorListener(adUri, adGroupIndex, adIndexInAdGroup)); + List mediaPeriods = maskingMediaPeriodByAdMediaSource.get(mediaSource); + if (mediaPeriods == null) { + Object periodUid = + Assertions.checkNotNull(adGroupTimelines[adGroupIndex][adIndexInAdGroup]) + .getUidOfPeriod(/* periodIndex= */ 0); + MediaPeriodId adSourceMediaPeriodId = new MediaPeriodId(periodUid, id.windowSequenceNumber); + maskingMediaPeriod.createPeriod(adSourceMediaPeriodId); + } else { + // Keep track of the masking media period so it can be populated with the real media period + // when the source's info becomes available. + mediaPeriods.add(maskingMediaPeriod); + } + return maskingMediaPeriod; + } else { + MaskingMediaPeriod mediaPeriod = + new MaskingMediaPeriod(contentMediaSource, id, allocator, startPositionUs); + mediaPeriod.createPeriod(id); + return mediaPeriod; + } + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + MaskingMediaPeriod maskingMediaPeriod = (MaskingMediaPeriod) mediaPeriod; + List mediaPeriods = + maskingMediaPeriodByAdMediaSource.get(maskingMediaPeriod.mediaSource); + if (mediaPeriods != null) { + mediaPeriods.remove(maskingMediaPeriod); + } + maskingMediaPeriod.releasePeriod(); + } + + @Override + protected void releaseSourceInternal() { + super.releaseSourceInternal(); + Assertions.checkNotNull(componentListener).release(); + componentListener = null; + maskingMediaPeriodByAdMediaSource.clear(); + contentTimeline = null; + adPlaybackState = null; + adGroupMediaSources = new MediaSource[0][]; + adGroupTimelines = new Timeline[0][]; + mainHandler.post(adsLoader::stop); + } + + @Override + protected void onChildSourceInfoRefreshed( + MediaPeriodId mediaPeriodId, MediaSource mediaSource, Timeline timeline) { + if (mediaPeriodId.isAd()) { + int adGroupIndex = mediaPeriodId.adGroupIndex; + int adIndexInAdGroup = mediaPeriodId.adIndexInAdGroup; + onAdSourceInfoRefreshed(mediaSource, adGroupIndex, adIndexInAdGroup, timeline); + } else { + onContentSourceInfoRefreshed(timeline); + } + } + + @Override + protected @Nullable MediaPeriodId getMediaPeriodIdForChildMediaPeriodId( + MediaPeriodId childId, MediaPeriodId mediaPeriodId) { + // The child id for the content period is just DUMMY_CONTENT_MEDIA_PERIOD_ID. That's why we need + // to forward the reported mediaPeriodId in this case. + return childId.isAd() ? childId : mediaPeriodId; + } + + // Internal methods. + + private void onAdPlaybackState(AdPlaybackState adPlaybackState) { + if (this.adPlaybackState == null) { + adGroupMediaSources = new MediaSource[adPlaybackState.adGroupCount][]; + Arrays.fill(adGroupMediaSources, new MediaSource[0]); + adGroupTimelines = new Timeline[adPlaybackState.adGroupCount][]; + Arrays.fill(adGroupTimelines, new Timeline[0]); + } + this.adPlaybackState = adPlaybackState; + maybeUpdateSourceInfo(); + } + + private void onContentSourceInfoRefreshed(Timeline timeline) { + Assertions.checkArgument(timeline.getPeriodCount() == 1); + contentTimeline = timeline; + maybeUpdateSourceInfo(); + } + + private void onAdSourceInfoRefreshed(MediaSource mediaSource, int adGroupIndex, + int adIndexInAdGroup, Timeline timeline) { + Assertions.checkArgument(timeline.getPeriodCount() == 1); + adGroupTimelines[adGroupIndex][adIndexInAdGroup] = timeline; + List mediaPeriods = maskingMediaPeriodByAdMediaSource.remove(mediaSource); + if (mediaPeriods != null) { + Object periodUid = timeline.getUidOfPeriod(/* periodIndex= */ 0); + for (int i = 0; i < mediaPeriods.size(); i++) { + MaskingMediaPeriod mediaPeriod = mediaPeriods.get(i); + MediaPeriodId adSourceMediaPeriodId = + new MediaPeriodId(periodUid, mediaPeriod.id.windowSequenceNumber); + mediaPeriod.createPeriod(adSourceMediaPeriodId); + } + } + maybeUpdateSourceInfo(); + } + + private void maybeUpdateSourceInfo() { + Timeline contentTimeline = this.contentTimeline; + if (adPlaybackState != null && contentTimeline != null) { + adPlaybackState = adPlaybackState.withAdDurationsUs(getAdDurations(adGroupTimelines, period)); + Timeline timeline = + adPlaybackState.adGroupCount == 0 + ? contentTimeline + : new SinglePeriodAdTimeline(contentTimeline, adPlaybackState); + refreshSourceInfo(timeline); + } + } + + private static long[][] getAdDurations( + @NullableType Timeline[][] adTimelines, Timeline.Period period) { + long[][] adDurations = new long[adTimelines.length][]; + for (int i = 0; i < adTimelines.length; i++) { + adDurations[i] = new long[adTimelines[i].length]; + for (int j = 0; j < adTimelines[i].length; j++) { + adDurations[i][j] = + adTimelines[i][j] == null + ? C.TIME_UNSET + : adTimelines[i][j].getPeriod(/* periodIndex= */ 0, period).getDurationUs(); + } + } + return adDurations; + } + + /** Listener for component events. All methods are called on the main thread. */ + private final class ComponentListener implements AdsLoader.EventListener { + + private final Handler playerHandler; + + private volatile boolean released; + + /** + * Creates new listener which forwards ad playback states on the creating thread and all other + * events on the external event listener thread. + */ + public ComponentListener() { + playerHandler = new Handler(); + } + + /** Releases the component listener. */ + public void release() { + released = true; + playerHandler.removeCallbacksAndMessages(null); + } + + @Override + public void onAdPlaybackState(final AdPlaybackState adPlaybackState) { + if (released) { + return; + } + playerHandler.post( + () -> { + if (released) { + return; + } + AdsMediaSource.this.onAdPlaybackState(adPlaybackState); + }); + } + + @Override + public void onAdLoadError(final AdLoadException error, DataSpec dataSpec) { + if (released) { + return; + } + createEventDispatcher(/* mediaPeriodId= */ null) + .loadError( + dataSpec, + dataSpec.uri, + /* responseHeaders= */ Collections.emptyMap(), + C.DATA_TYPE_AD, + C.TRACK_TYPE_UNKNOWN, + /* loadDurationMs= */ 0, + /* bytesLoaded= */ 0, + error, + /* wasCanceled= */ true); + } + } + + private final class AdPrepareErrorListener implements MaskingMediaPeriod.PrepareErrorListener { + + private final Uri adUri; + private final int adGroupIndex; + private final int adIndexInAdGroup; + + public AdPrepareErrorListener(Uri adUri, int adGroupIndex, int adIndexInAdGroup) { + this.adUri = adUri; + this.adGroupIndex = adGroupIndex; + this.adIndexInAdGroup = adIndexInAdGroup; + } + + @Override + public void onPrepareError(MediaPeriodId mediaPeriodId, final IOException exception) { + createEventDispatcher(mediaPeriodId) + .loadError( + new DataSpec(adUri), + adUri, + /* responseHeaders= */ Collections.emptyMap(), + C.DATA_TYPE_AD, + C.TRACK_TYPE_UNKNOWN, + /* loadDurationMs= */ 0, + /* bytesLoaded= */ 0, + AdLoadException.createForAd(exception), + /* wasCanceled= */ true); + mainHandler.post( + () -> adsLoader.handlePrepareError(adGroupIndex, adIndexInAdGroup, exception)); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/SinglePeriodAdTimeline.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/SinglePeriodAdTimeline.java new file mode 100644 index 0000000000..44f6d0bc66 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/ads/SinglePeriodAdTimeline.java @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.ads; + +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.ForwardingTimeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** A {@link Timeline} for sources that have ads. */ +@VisibleForTesting(otherwise = VisibleForTesting.PACKAGE_PRIVATE) +public final class SinglePeriodAdTimeline extends ForwardingTimeline { + + private final AdPlaybackState adPlaybackState; + + /** + * Creates a new timeline with a single period containing ads. + * + * @param contentTimeline The timeline of the content alongside which ads will be played. It must + * have one window and one period. + * @param adPlaybackState The state of the period's ads. + */ + public SinglePeriodAdTimeline(Timeline contentTimeline, AdPlaybackState adPlaybackState) { + super(contentTimeline); + Assertions.checkState(contentTimeline.getPeriodCount() == 1); + Assertions.checkState(contentTimeline.getWindowCount() == 1); + this.adPlaybackState = adPlaybackState; + } + + @Override + public Period getPeriod(int periodIndex, Period period, boolean setIds) { + timeline.getPeriod(periodIndex, period, setIds); + period.set( + period.id, + period.uid, + period.windowIndex, + period.durationUs, + period.getPositionInWindowUs(), + adPlaybackState); + return period; + } + + @Override + public Window getWindow(int windowIndex, Window window, long defaultPositionProjectionUs) { + window = super.getWindow(windowIndex, window, defaultPositionProjectionUs); + if (window.durationUs == C.TIME_UNSET) { + window.durationUs = adPlaybackState.contentDurationUs; + } + return window; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunk.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunk.java new file mode 100644 index 0000000000..406cd1617a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunk.java @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; + +/** + * A base implementation of {@link MediaChunk} that outputs to a {@link BaseMediaChunkOutput}. + */ +public abstract class BaseMediaChunk extends MediaChunk { + + /** + * The time from which output will begin, or {@link C#TIME_UNSET} if output will begin from the + * start of the chunk. + */ + public final long clippedStartTimeUs; + /** + * The time from which output will end, or {@link C#TIME_UNSET} if output will end at the end of + * the chunk. + */ + public final long clippedEndTimeUs; + + private BaseMediaChunkOutput output; + private int[] firstSampleIndices; + + /** + * @param dataSource The source from which the data should be loaded. + * @param dataSpec Defines the data to be loaded. + * @param trackFormat See {@link #trackFormat}. + * @param trackSelectionReason See {@link #trackSelectionReason}. + * @param trackSelectionData See {@link #trackSelectionData}. + * @param startTimeUs The start time of the media contained by the chunk, in microseconds. + * @param endTimeUs The end time of the media contained by the chunk, in microseconds. + * @param clippedStartTimeUs The time in the chunk from which output will begin, or {@link + * C#TIME_UNSET} to output from the start of the chunk. + * @param clippedEndTimeUs The time in the chunk from which output will end, or {@link + * C#TIME_UNSET} to output to the end of the chunk. + * @param chunkIndex The index of the chunk, or {@link C#INDEX_UNSET} if it is not known. + */ + public BaseMediaChunk( + DataSource dataSource, + DataSpec dataSpec, + Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + long startTimeUs, + long endTimeUs, + long clippedStartTimeUs, + long clippedEndTimeUs, + long chunkIndex) { + super(dataSource, dataSpec, trackFormat, trackSelectionReason, trackSelectionData, startTimeUs, + endTimeUs, chunkIndex); + this.clippedStartTimeUs = clippedStartTimeUs; + this.clippedEndTimeUs = clippedEndTimeUs; + } + + /** + * Initializes the chunk for loading, setting the {@link BaseMediaChunkOutput} that will receive + * samples as they are loaded. + * + * @param output The output that will receive the loaded media samples. + */ + public void init(BaseMediaChunkOutput output) { + this.output = output; + firstSampleIndices = output.getWriteIndices(); + } + + /** + * Returns the index of the first sample in the specified track of the output that will originate + * from this chunk. + */ + public final int getFirstSampleIndex(int trackIndex) { + return firstSampleIndices[trackIndex]; + } + + /** + * Returns the output most recently passed to {@link #init(BaseMediaChunkOutput)}. + */ + protected final BaseMediaChunkOutput getOutput() { + return output; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunkIterator.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunkIterator.java new file mode 100644 index 0000000000..3987260578 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunkIterator.java @@ -0,0 +1,75 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import java.util.NoSuchElementException; + +/** + * Base class for {@link MediaChunkIterator}s. Handles {@link #next()} and {@link #isEnded()}, and + * provides a bounds check for child classes. + */ +public abstract class BaseMediaChunkIterator implements MediaChunkIterator { + + private final long fromIndex; + private final long toIndex; + + private long currentIndex; + + /** + * Creates base iterator. + * + * @param fromIndex The first available index. + * @param toIndex The last available index. + */ + @SuppressWarnings("method.invocation.invalid") + public BaseMediaChunkIterator(long fromIndex, long toIndex) { + this.fromIndex = fromIndex; + this.toIndex = toIndex; + reset(); + } + + @Override + public boolean isEnded() { + return currentIndex > toIndex; + } + + @Override + public boolean next() { + currentIndex++; + return !isEnded(); + } + + @Override + public void reset() { + currentIndex = fromIndex - 1; + } + + /** + * Verifies that the iterator points to a valid element. + * + * @throws NoSuchElementException If the iterator does not point to a valid element. + */ + protected final void checkInBounds() { + if (currentIndex < fromIndex || currentIndex > toIndex) { + throw new NoSuchElementException(); + } + } + + /** Returns the current index this iterator is pointing to. */ + protected final long getCurrentIndex() { + return currentIndex; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunkOutput.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunkOutput.java new file mode 100644 index 0000000000..5d1f93bf01 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/BaseMediaChunkOutput.java @@ -0,0 +1,80 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DummyTrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleQueue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.ChunkExtractorWrapper.TrackOutputProvider; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; + +/** + * A {@link TrackOutputProvider} that provides {@link TrackOutput TrackOutputs} based on a + * predefined mapping from track type to output. + */ +public final class BaseMediaChunkOutput implements TrackOutputProvider { + + private static final String TAG = "BaseMediaChunkOutput"; + + private final int[] trackTypes; + private final SampleQueue[] sampleQueues; + + /** + * @param trackTypes The track types of the individual track outputs. + * @param sampleQueues The individual sample queues. + */ + public BaseMediaChunkOutput(int[] trackTypes, SampleQueue[] sampleQueues) { + this.trackTypes = trackTypes; + this.sampleQueues = sampleQueues; + } + + @Override + public TrackOutput track(int id, int type) { + for (int i = 0; i < trackTypes.length; i++) { + if (type == trackTypes[i]) { + return sampleQueues[i]; + } + } + Log.e(TAG, "Unmatched track of type: " + type); + return new DummyTrackOutput(); + } + + /** + * Returns the current absolute write indices of the individual sample queues. + */ + public int[] getWriteIndices() { + int[] writeIndices = new int[sampleQueues.length]; + for (int i = 0; i < sampleQueues.length; i++) { + if (sampleQueues[i] != null) { + writeIndices[i] = sampleQueues[i].getWriteIndex(); + } + } + return writeIndices; + } + + /** + * Sets an offset that will be added to the timestamps (and sub-sample timestamps) of samples + * subsequently written to the sample queues. + */ + public void setSampleOffsetUs(long sampleOffsetUs) { + for (SampleQueue sampleQueue : sampleQueues) { + if (sampleQueue != null) { + sampleQueue.setSampleOffsetUs(sampleOffsetUs); + } + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/Chunk.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/Chunk.java new file mode 100644 index 0000000000..3f4450eddd --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/Chunk.java @@ -0,0 +1,137 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.Loadable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.StatsDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.List; +import java.util.Map; + +/** + * An abstract base class for {@link Loadable} implementations that load chunks of data required + * for the playback of streams. + */ +public abstract class Chunk implements Loadable { + + /** + * The {@link DataSpec} that defines the data to be loaded. + */ + public final DataSpec dataSpec; + /** + * The type of the chunk. One of the {@code DATA_TYPE_*} constants defined in {@link C}. For + * reporting only. + */ + public final int type; + /** + * The format of the track to which this chunk belongs, or null if the chunk does not belong to + * a track. + */ + public final Format trackFormat; + /** + * One of the {@link C} {@code SELECTION_REASON_*} constants if the chunk belongs to a track. + * {@link C#SELECTION_REASON_UNKNOWN} if the chunk does not belong to a track. + */ + public final int trackSelectionReason; + /** + * Optional data associated with the selection of the track to which this chunk belongs. Null if + * the chunk does not belong to a track. + */ + @Nullable public final Object trackSelectionData; + /** + * The start time of the media contained by the chunk, or {@link C#TIME_UNSET} if the data + * being loaded does not contain media samples. + */ + public final long startTimeUs; + /** + * The end time of the media contained by the chunk, or {@link C#TIME_UNSET} if the data being + * loaded does not contain media samples. + */ + public final long endTimeUs; + + protected final StatsDataSource dataSource; + + /** + * @param dataSource The source from which the data should be loaded. + * @param dataSpec Defines the data to be loaded. + * @param type See {@link #type}. + * @param trackFormat See {@link #trackFormat}. + * @param trackSelectionReason See {@link #trackSelectionReason}. + * @param trackSelectionData See {@link #trackSelectionData}. + * @param startTimeUs See {@link #startTimeUs}. + * @param endTimeUs See {@link #endTimeUs}. + */ + public Chunk( + DataSource dataSource, + DataSpec dataSpec, + int type, + Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + long startTimeUs, + long endTimeUs) { + this.dataSource = new StatsDataSource(dataSource); + this.dataSpec = Assertions.checkNotNull(dataSpec); + this.type = type; + this.trackFormat = trackFormat; + this.trackSelectionReason = trackSelectionReason; + this.trackSelectionData = trackSelectionData; + this.startTimeUs = startTimeUs; + this.endTimeUs = endTimeUs; + } + + /** + * Returns the duration of the chunk in microseconds. + */ + public final long getDurationUs() { + return endTimeUs - startTimeUs; + } + + /** + * Returns the number of bytes that have been loaded. Must only be called after the load + * completed, failed, or was canceled. + */ + public final long bytesLoaded() { + return dataSource.getBytesRead(); + } + + /** + * Returns the {@link Uri} associated with the last {@link DataSource#open} call. If redirection + * occurred, this is the redirected uri. Must only be called after the load completed, failed, or + * was canceled. + * + * @see DataSource#getUri() + */ + public final Uri getUri() { + return dataSource.getLastOpenedUri(); + } + + /** + * Returns the response headers associated with the last {@link DataSource#open} call. Must only + * be called after the load completed, failed, or was canceled. + * + * @see DataSource#getResponseHeaders() + */ + public final Map> getResponseHeaders() { + return dataSource.getLastResponseHeaders(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkExtractorWrapper.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkExtractorWrapper.java new file mode 100644 index 0000000000..04cef9198c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkExtractorWrapper.java @@ -0,0 +1,220 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import android.util.SparseArray; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DummyTrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.io.IOException; + +/** + * An {@link Extractor} wrapper for loading chunks that contain a single primary track, and possibly + * additional embedded tracks. + *

+ * The wrapper allows switching of the {@link TrackOutput}s that receive parsed data. + */ +public final class ChunkExtractorWrapper implements ExtractorOutput { + + /** + * Provides {@link TrackOutput} instances to be written to by the wrapper. + */ + public interface TrackOutputProvider { + + /** + * Called to get the {@link TrackOutput} for a specific track. + *

+ * The same {@link TrackOutput} is returned if multiple calls are made with the same {@code id}. + * + * @param id A track identifier. + * @param type The type of the track. Typically one of the + * {@link org.mozilla.thirdparty.com.google.android.exoplayer2C} {@code TRACK_TYPE_*} constants. + * @return The {@link TrackOutput} for the given track identifier. + */ + TrackOutput track(int id, int type); + + } + + public final Extractor extractor; + + private final int primaryTrackType; + private final Format primaryTrackManifestFormat; + private final SparseArray bindingTrackOutputs; + + private boolean extractorInitialized; + private TrackOutputProvider trackOutputProvider; + private long endTimeUs; + private SeekMap seekMap; + private Format[] sampleFormats; + + /** + * @param extractor The extractor to wrap. + * @param primaryTrackType The type of the primary track. Typically one of the + * {@link org.mozilla.thirdparty.com.google.android.exoplayer2C} {@code TRACK_TYPE_*} constants. + * @param primaryTrackManifestFormat A manifest defined {@link Format} whose data should be merged + * into any sample {@link Format} output from the {@link Extractor} for the primary track. + */ + public ChunkExtractorWrapper(Extractor extractor, int primaryTrackType, + Format primaryTrackManifestFormat) { + this.extractor = extractor; + this.primaryTrackType = primaryTrackType; + this.primaryTrackManifestFormat = primaryTrackManifestFormat; + bindingTrackOutputs = new SparseArray<>(); + } + + /** + * Returns the {@link SeekMap} most recently output by the extractor, or null. + */ + public SeekMap getSeekMap() { + return seekMap; + } + + /** + * Returns the sample {@link Format}s most recently output by the extractor, or null. + */ + public Format[] getSampleFormats() { + return sampleFormats; + } + + /** + * Initializes the wrapper to output to {@link TrackOutput}s provided by the specified {@link + * TrackOutputProvider}, and configures the extractor to receive data from a new chunk. + * + * @param trackOutputProvider The provider of {@link TrackOutput}s that will receive sample data. + * @param startTimeUs The start position in the new chunk, or {@link C#TIME_UNSET} to output + * samples from the start of the chunk. + * @param endTimeUs The end position in the new chunk, or {@link C#TIME_UNSET} to output samples + * to the end of the chunk. + */ + public void init( + @Nullable TrackOutputProvider trackOutputProvider, long startTimeUs, long endTimeUs) { + this.trackOutputProvider = trackOutputProvider; + this.endTimeUs = endTimeUs; + if (!extractorInitialized) { + extractor.init(this); + if (startTimeUs != C.TIME_UNSET) { + extractor.seek(/* position= */ 0, startTimeUs); + } + extractorInitialized = true; + } else { + extractor.seek(/* position= */ 0, startTimeUs == C.TIME_UNSET ? 0 : startTimeUs); + for (int i = 0; i < bindingTrackOutputs.size(); i++) { + bindingTrackOutputs.valueAt(i).bind(trackOutputProvider, endTimeUs); + } + } + } + + // ExtractorOutput implementation. + + @Override + public TrackOutput track(int id, int type) { + BindingTrackOutput bindingTrackOutput = bindingTrackOutputs.get(id); + if (bindingTrackOutput == null) { + // Assert that if we're seeing a new track we have not seen endTracks. + Assertions.checkState(sampleFormats == null); + // TODO: Manifest formats for embedded tracks should also be passed here. + bindingTrackOutput = new BindingTrackOutput(id, type, + type == primaryTrackType ? primaryTrackManifestFormat : null); + bindingTrackOutput.bind(trackOutputProvider, endTimeUs); + bindingTrackOutputs.put(id, bindingTrackOutput); + } + return bindingTrackOutput; + } + + @Override + public void endTracks() { + Format[] sampleFormats = new Format[bindingTrackOutputs.size()]; + for (int i = 0; i < bindingTrackOutputs.size(); i++) { + sampleFormats[i] = bindingTrackOutputs.valueAt(i).sampleFormat; + } + this.sampleFormats = sampleFormats; + } + + @Override + public void seekMap(SeekMap seekMap) { + this.seekMap = seekMap; + } + + // Internal logic. + + private static final class BindingTrackOutput implements TrackOutput { + + private final int id; + private final int type; + private final Format manifestFormat; + private final DummyTrackOutput dummyTrackOutput; + + public Format sampleFormat; + private TrackOutput trackOutput; + private long endTimeUs; + + public BindingTrackOutput(int id, int type, Format manifestFormat) { + this.id = id; + this.type = type; + this.manifestFormat = manifestFormat; + dummyTrackOutput = new DummyTrackOutput(); + } + + public void bind(TrackOutputProvider trackOutputProvider, long endTimeUs) { + if (trackOutputProvider == null) { + trackOutput = dummyTrackOutput; + return; + } + this.endTimeUs = endTimeUs; + trackOutput = trackOutputProvider.track(id, type); + if (sampleFormat != null) { + trackOutput.format(sampleFormat); + } + } + + @Override + public void format(Format format) { + sampleFormat = manifestFormat != null ? format.copyWithManifestFormatInfo(manifestFormat) + : format; + trackOutput.format(sampleFormat); + } + + @Override + public int sampleData(ExtractorInput input, int length, boolean allowEndOfInput) + throws IOException, InterruptedException { + return trackOutput.sampleData(input, length, allowEndOfInput); + } + + @Override + public void sampleData(ParsableByteArray data, int length) { + trackOutput.sampleData(data, length); + } + + @Override + public void sampleMetadata(long timeUs, @C.BufferFlags int flags, int size, int offset, + CryptoData cryptoData) { + if (endTimeUs != C.TIME_UNSET && timeUs >= endTimeUs) { + trackOutput = dummyTrackOutput; + } + trackOutput.sampleMetadata(timeUs, flags, size, offset, cryptoData); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkHolder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkHolder.java new file mode 100644 index 0000000000..ef9daddd2c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkHolder.java @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import androidx.annotation.Nullable; + +/** + * Holds a chunk or an indication that the end of the stream has been reached. + */ +public final class ChunkHolder { + + /** The chunk. */ + @Nullable public Chunk chunk; + + /** + * Indicates that the end of the stream has been reached. + */ + public boolean endOfStream; + + /** + * Clears the holder. + */ + public void clear() { + chunk = null; + endOfStream = false; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkSampleStream.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkSampleStream.java new file mode 100644 index 0000000000..a789805cd7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkSampleStream.java @@ -0,0 +1,791 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleQueue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SequenceableLoader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.LoadErrorAction; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** + * A {@link SampleStream} that loads media in {@link Chunk}s, obtained from a {@link ChunkSource}. + * May also be configured to expose additional embedded {@link SampleStream}s. + */ +public class ChunkSampleStream implements SampleStream, SequenceableLoader, + Loader.Callback, Loader.ReleaseCallback { + + /** A callback to be notified when a sample stream has finished being released. */ + public interface ReleaseCallback { + + /** + * Called when the {@link ChunkSampleStream} has finished being released. + * + * @param chunkSampleStream The released sample stream. + */ + void onSampleStreamReleased(ChunkSampleStream chunkSampleStream); + } + + private static final String TAG = "ChunkSampleStream"; + + public final int primaryTrackType; + + @Nullable private final int[] embeddedTrackTypes; + @Nullable private final Format[] embeddedTrackFormats; + private final boolean[] embeddedTracksSelected; + private final T chunkSource; + private final SequenceableLoader.Callback> callback; + private final EventDispatcher eventDispatcher; + private final LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private final Loader loader; + private final ChunkHolder nextChunkHolder; + private final ArrayList mediaChunks; + private final List readOnlyMediaChunks; + private final SampleQueue primarySampleQueue; + private final SampleQueue[] embeddedSampleQueues; + private final BaseMediaChunkOutput chunkOutput; + + private Format primaryDownstreamTrackFormat; + @Nullable private ReleaseCallback releaseCallback; + private long pendingResetPositionUs; + private long lastSeekPositionUs; + private int nextNotifyPrimaryFormatMediaChunkIndex; + + /* package */ long decodeOnlyUntilPositionUs; + /* package */ boolean loadingFinished; + + /** + * Constructs an instance. + * + * @param primaryTrackType The type of the primary track. One of the {@link C} {@code + * TRACK_TYPE_*} constants. + * @param embeddedTrackTypes The types of any embedded tracks, or null. + * @param embeddedTrackFormats The formats of the embedded tracks, or null. + * @param chunkSource A {@link ChunkSource} from which chunks to load are obtained. + * @param callback An {@link Callback} for the stream. + * @param allocator An {@link Allocator} from which allocations can be obtained. + * @param positionUs The position from which to start loading media. + * @param drmSessionManager The {@link DrmSessionManager} to obtain {@link DrmSession DrmSessions} + * from. + * @param loadErrorHandlingPolicy The {@link LoadErrorHandlingPolicy}. + * @param eventDispatcher A dispatcher to notify of events. + */ + public ChunkSampleStream( + int primaryTrackType, + @Nullable int[] embeddedTrackTypes, + @Nullable Format[] embeddedTrackFormats, + T chunkSource, + Callback> callback, + Allocator allocator, + long positionUs, + DrmSessionManager drmSessionManager, + LoadErrorHandlingPolicy loadErrorHandlingPolicy, + EventDispatcher eventDispatcher) { + this.primaryTrackType = primaryTrackType; + this.embeddedTrackTypes = embeddedTrackTypes; + this.embeddedTrackFormats = embeddedTrackFormats; + this.chunkSource = chunkSource; + this.callback = callback; + this.eventDispatcher = eventDispatcher; + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + loader = new Loader("Loader:ChunkSampleStream"); + nextChunkHolder = new ChunkHolder(); + mediaChunks = new ArrayList<>(); + readOnlyMediaChunks = Collections.unmodifiableList(mediaChunks); + + int embeddedTrackCount = embeddedTrackTypes == null ? 0 : embeddedTrackTypes.length; + embeddedSampleQueues = new SampleQueue[embeddedTrackCount]; + embeddedTracksSelected = new boolean[embeddedTrackCount]; + int[] trackTypes = new int[1 + embeddedTrackCount]; + SampleQueue[] sampleQueues = new SampleQueue[1 + embeddedTrackCount]; + + primarySampleQueue = new SampleQueue(allocator, drmSessionManager); + trackTypes[0] = primaryTrackType; + sampleQueues[0] = primarySampleQueue; + + for (int i = 0; i < embeddedTrackCount; i++) { + SampleQueue sampleQueue = + new SampleQueue(allocator, DrmSessionManager.getDummyDrmSessionManager()); + embeddedSampleQueues[i] = sampleQueue; + sampleQueues[i + 1] = sampleQueue; + trackTypes[i + 1] = embeddedTrackTypes[i]; + } + + chunkOutput = new BaseMediaChunkOutput(trackTypes, sampleQueues); + pendingResetPositionUs = positionUs; + lastSeekPositionUs = positionUs; + } + + /** + * Discards buffered media up to the specified position. + * + * @param positionUs The position to discard up to, in microseconds. + * @param toKeyframe If true then for each track discards samples up to the keyframe before or at + * the specified position, rather than any sample before or at that position. + */ + public void discardBuffer(long positionUs, boolean toKeyframe) { + if (isPendingReset()) { + return; + } + int oldFirstSampleIndex = primarySampleQueue.getFirstIndex(); + primarySampleQueue.discardTo(positionUs, toKeyframe, true); + int newFirstSampleIndex = primarySampleQueue.getFirstIndex(); + if (newFirstSampleIndex > oldFirstSampleIndex) { + long discardToUs = primarySampleQueue.getFirstTimestampUs(); + for (int i = 0; i < embeddedSampleQueues.length; i++) { + embeddedSampleQueues[i].discardTo(discardToUs, toKeyframe, embeddedTracksSelected[i]); + } + } + discardDownstreamMediaChunks(newFirstSampleIndex); + } + + /** + * Selects the embedded track, returning a new {@link EmbeddedSampleStream} from which the track's + * samples can be consumed. {@link EmbeddedSampleStream#release()} must be called on the returned + * stream when the track is no longer required, and before calling this method again to obtain + * another stream for the same track. + * + * @param positionUs The current playback position in microseconds. + * @param trackType The type of the embedded track to enable. + * @return The {@link EmbeddedSampleStream} for the embedded track. + */ + public EmbeddedSampleStream selectEmbeddedTrack(long positionUs, int trackType) { + for (int i = 0; i < embeddedSampleQueues.length; i++) { + if (embeddedTrackTypes[i] == trackType) { + Assertions.checkState(!embeddedTracksSelected[i]); + embeddedTracksSelected[i] = true; + embeddedSampleQueues[i].seekTo(positionUs, /* allowTimeBeyondBuffer= */ true); + return new EmbeddedSampleStream(this, embeddedSampleQueues[i], i); + } + } + // Should never happen. + throw new IllegalStateException(); + } + + /** + * Returns the {@link ChunkSource} used by this stream. + */ + public T getChunkSource() { + return chunkSource; + } + + /** + * Returns an estimate of the position up to which data is buffered. + * + * @return An estimate of the absolute position in microseconds up to which data is buffered, or + * {@link C#TIME_END_OF_SOURCE} if the track is fully buffered. + */ + @Override + public long getBufferedPositionUs() { + if (loadingFinished) { + return C.TIME_END_OF_SOURCE; + } else if (isPendingReset()) { + return pendingResetPositionUs; + } else { + long bufferedPositionUs = lastSeekPositionUs; + BaseMediaChunk lastMediaChunk = getLastMediaChunk(); + BaseMediaChunk lastCompletedMediaChunk = lastMediaChunk.isLoadCompleted() ? lastMediaChunk + : mediaChunks.size() > 1 ? mediaChunks.get(mediaChunks.size() - 2) : null; + if (lastCompletedMediaChunk != null) { + bufferedPositionUs = Math.max(bufferedPositionUs, lastCompletedMediaChunk.endTimeUs); + } + return Math.max(bufferedPositionUs, primarySampleQueue.getLargestQueuedTimestampUs()); + } + } + + /** + * Adjusts a seek position given the specified {@link SeekParameters}. Chunk boundaries are used + * as sync points. + * + * @param positionUs The seek position in microseconds. + * @param seekParameters Parameters that control how the seek is performed. + * @return The adjusted seek position, in microseconds. + */ + public long getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters) { + return chunkSource.getAdjustedSeekPositionUs(positionUs, seekParameters); + } + + /** + * Seeks to the specified position in microseconds. + * + * @param positionUs The seek position in microseconds. + */ + public void seekToUs(long positionUs) { + lastSeekPositionUs = positionUs; + if (isPendingReset()) { + // A reset is already pending. We only need to update its position. + pendingResetPositionUs = positionUs; + return; + } + + // Detect whether the seek is to the start of a chunk that's at least partially buffered. + BaseMediaChunk seekToMediaChunk = null; + for (int i = 0; i < mediaChunks.size(); i++) { + BaseMediaChunk mediaChunk = mediaChunks.get(i); + long mediaChunkStartTimeUs = mediaChunk.startTimeUs; + if (mediaChunkStartTimeUs == positionUs && mediaChunk.clippedStartTimeUs == C.TIME_UNSET) { + seekToMediaChunk = mediaChunk; + break; + } else if (mediaChunkStartTimeUs > positionUs) { + // We're not going to find a chunk with a matching start time. + break; + } + } + + // See if we can seek inside the primary sample queue. + boolean seekInsideBuffer; + if (seekToMediaChunk != null) { + // When seeking to the start of a chunk we use the index of the first sample in the chunk + // rather than the seek position. This ensures we seek to the keyframe at the start of the + // chunk even if the sample timestamps are slightly offset from the chunk start times. + seekInsideBuffer = primarySampleQueue.seekTo(seekToMediaChunk.getFirstSampleIndex(0)); + decodeOnlyUntilPositionUs = 0; + } else { + seekInsideBuffer = + primarySampleQueue.seekTo( + positionUs, /* allowTimeBeyondBuffer= */ positionUs < getNextLoadPositionUs()); + decodeOnlyUntilPositionUs = lastSeekPositionUs; + } + + if (seekInsideBuffer) { + // We can seek inside the buffer. + nextNotifyPrimaryFormatMediaChunkIndex = + primarySampleIndexToMediaChunkIndex( + primarySampleQueue.getReadIndex(), /* minChunkIndex= */ 0); + // Seek the embedded sample queues. + for (SampleQueue embeddedSampleQueue : embeddedSampleQueues) { + embeddedSampleQueue.seekTo(positionUs, /* allowTimeBeyondBuffer= */ true); + } + } else { + // We can't seek inside the buffer, and so need to reset. + pendingResetPositionUs = positionUs; + loadingFinished = false; + mediaChunks.clear(); + nextNotifyPrimaryFormatMediaChunkIndex = 0; + if (loader.isLoading()) { + loader.cancelLoading(); + } else { + loader.clearFatalError(); + primarySampleQueue.reset(); + for (SampleQueue embeddedSampleQueue : embeddedSampleQueues) { + embeddedSampleQueue.reset(); + } + } + } + } + + /** + * Releases the stream. + * + *

This method should be called when the stream is no longer required. Either this method or + * {@link #release(ReleaseCallback)} can be used to release this stream. + */ + public void release() { + release(null); + } + + /** + * Releases the stream. + * + *

This method should be called when the stream is no longer required. Either this method or + * {@link #release()} can be used to release this stream. + * + * @param callback An optional callback to be called on the loading thread once the loader has + * been released. + */ + public void release(@Nullable ReleaseCallback callback) { + this.releaseCallback = callback; + // Discard as much as we can synchronously. + primarySampleQueue.preRelease(); + for (SampleQueue embeddedSampleQueue : embeddedSampleQueues) { + embeddedSampleQueue.preRelease(); + } + loader.release(this); + } + + @Override + public void onLoaderReleased() { + primarySampleQueue.release(); + for (SampleQueue embeddedSampleQueue : embeddedSampleQueues) { + embeddedSampleQueue.release(); + } + if (releaseCallback != null) { + releaseCallback.onSampleStreamReleased(this); + } + } + + // SampleStream implementation. + + @Override + public boolean isReady() { + return !isPendingReset() && primarySampleQueue.isReady(loadingFinished); + } + + @Override + public void maybeThrowError() throws IOException { + loader.maybeThrowError(); + primarySampleQueue.maybeThrowError(); + if (!loader.isLoading()) { + chunkSource.maybeThrowError(); + } + } + + @Override + public int readData(FormatHolder formatHolder, DecoderInputBuffer buffer, + boolean formatRequired) { + if (isPendingReset()) { + return C.RESULT_NOTHING_READ; + } + maybeNotifyPrimaryTrackFormatChanged(); + + return primarySampleQueue.read( + formatHolder, buffer, formatRequired, loadingFinished, decodeOnlyUntilPositionUs); + } + + @Override + public int skipData(long positionUs) { + if (isPendingReset()) { + return 0; + } + int skipCount; + if (loadingFinished && positionUs > primarySampleQueue.getLargestQueuedTimestampUs()) { + skipCount = primarySampleQueue.advanceToEnd(); + } else { + skipCount = primarySampleQueue.advanceTo(positionUs); + } + maybeNotifyPrimaryTrackFormatChanged(); + return skipCount; + } + + // Loader.Callback implementation. + + @Override + public void onLoadCompleted(Chunk loadable, long elapsedRealtimeMs, long loadDurationMs) { + chunkSource.onChunkLoadCompleted(loadable); + eventDispatcher.loadCompleted( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + loadable.type, + primaryTrackType, + loadable.trackFormat, + loadable.trackSelectionReason, + loadable.trackSelectionData, + loadable.startTimeUs, + loadable.endTimeUs, + elapsedRealtimeMs, + loadDurationMs, + loadable.bytesLoaded()); + callback.onContinueLoadingRequested(this); + } + + @Override + public void onLoadCanceled(Chunk loadable, long elapsedRealtimeMs, long loadDurationMs, + boolean released) { + eventDispatcher.loadCanceled( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + loadable.type, + primaryTrackType, + loadable.trackFormat, + loadable.trackSelectionReason, + loadable.trackSelectionData, + loadable.startTimeUs, + loadable.endTimeUs, + elapsedRealtimeMs, + loadDurationMs, + loadable.bytesLoaded()); + if (!released) { + primarySampleQueue.reset(); + for (SampleQueue embeddedSampleQueue : embeddedSampleQueues) { + embeddedSampleQueue.reset(); + } + callback.onContinueLoadingRequested(this); + } + } + + @Override + public LoadErrorAction onLoadError( + Chunk loadable, + long elapsedRealtimeMs, + long loadDurationMs, + IOException error, + int errorCount) { + long bytesLoaded = loadable.bytesLoaded(); + boolean isMediaChunk = isMediaChunk(loadable); + int lastChunkIndex = mediaChunks.size() - 1; + boolean cancelable = + bytesLoaded == 0 || !isMediaChunk || !haveReadFromMediaChunk(lastChunkIndex); + long blacklistDurationMs = + cancelable + ? loadErrorHandlingPolicy.getBlacklistDurationMsFor( + loadable.type, loadDurationMs, error, errorCount) + : C.TIME_UNSET; + LoadErrorAction loadErrorAction = null; + if (chunkSource.onChunkLoadError(loadable, cancelable, error, blacklistDurationMs)) { + if (cancelable) { + loadErrorAction = Loader.DONT_RETRY; + if (isMediaChunk) { + BaseMediaChunk removed = discardUpstreamMediaChunksFromIndex(lastChunkIndex); + Assertions.checkState(removed == loadable); + if (mediaChunks.isEmpty()) { + pendingResetPositionUs = lastSeekPositionUs; + } + } + } else { + Log.w(TAG, "Ignoring attempt to cancel non-cancelable load."); + } + } + + if (loadErrorAction == null) { + // The load was not cancelled. Either the load must be retried or the error propagated. + long retryDelayMs = + loadErrorHandlingPolicy.getRetryDelayMsFor( + loadable.type, loadDurationMs, error, errorCount); + loadErrorAction = + retryDelayMs != C.TIME_UNSET + ? Loader.createRetryAction(/* resetErrorCount= */ false, retryDelayMs) + : Loader.DONT_RETRY_FATAL; + } + + boolean canceled = !loadErrorAction.isRetry(); + eventDispatcher.loadError( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + loadable.type, + primaryTrackType, + loadable.trackFormat, + loadable.trackSelectionReason, + loadable.trackSelectionData, + loadable.startTimeUs, + loadable.endTimeUs, + elapsedRealtimeMs, + loadDurationMs, + bytesLoaded, + error, + canceled); + if (canceled) { + callback.onContinueLoadingRequested(this); + } + return loadErrorAction; + } + + // SequenceableLoader implementation + + @Override + public boolean continueLoading(long positionUs) { + if (loadingFinished || loader.isLoading() || loader.hasFatalError()) { + return false; + } + + boolean pendingReset = isPendingReset(); + List chunkQueue; + long loadPositionUs; + if (pendingReset) { + chunkQueue = Collections.emptyList(); + loadPositionUs = pendingResetPositionUs; + } else { + chunkQueue = readOnlyMediaChunks; + loadPositionUs = getLastMediaChunk().endTimeUs; + } + chunkSource.getNextChunk(positionUs, loadPositionUs, chunkQueue, nextChunkHolder); + boolean endOfStream = nextChunkHolder.endOfStream; + Chunk loadable = nextChunkHolder.chunk; + nextChunkHolder.clear(); + + if (endOfStream) { + pendingResetPositionUs = C.TIME_UNSET; + loadingFinished = true; + return true; + } + + if (loadable == null) { + return false; + } + + if (isMediaChunk(loadable)) { + BaseMediaChunk mediaChunk = (BaseMediaChunk) loadable; + if (pendingReset) { + boolean resetToMediaChunk = mediaChunk.startTimeUs == pendingResetPositionUs; + // Only enable setting of the decode only flag if we're not resetting to a chunk boundary. + decodeOnlyUntilPositionUs = resetToMediaChunk ? 0 : pendingResetPositionUs; + pendingResetPositionUs = C.TIME_UNSET; + } + mediaChunk.init(chunkOutput); + mediaChunks.add(mediaChunk); + } else if (loadable instanceof InitializationChunk) { + ((InitializationChunk) loadable).init(chunkOutput); + } + long elapsedRealtimeMs = + loader.startLoading( + loadable, this, loadErrorHandlingPolicy.getMinimumLoadableRetryCount(loadable.type)); + eventDispatcher.loadStarted( + loadable.dataSpec, + loadable.type, + primaryTrackType, + loadable.trackFormat, + loadable.trackSelectionReason, + loadable.trackSelectionData, + loadable.startTimeUs, + loadable.endTimeUs, + elapsedRealtimeMs); + return true; + } + + @Override + public boolean isLoading() { + return loader.isLoading(); + } + + @Override + public long getNextLoadPositionUs() { + if (isPendingReset()) { + return pendingResetPositionUs; + } else { + return loadingFinished ? C.TIME_END_OF_SOURCE : getLastMediaChunk().endTimeUs; + } + } + + @Override + public void reevaluateBuffer(long positionUs) { + if (loader.isLoading() || loader.hasFatalError() || isPendingReset()) { + return; + } + + int currentQueueSize = mediaChunks.size(); + int preferredQueueSize = chunkSource.getPreferredQueueSize(positionUs, readOnlyMediaChunks); + if (currentQueueSize <= preferredQueueSize) { + return; + } + + int newQueueSize = currentQueueSize; + for (int i = preferredQueueSize; i < currentQueueSize; i++) { + if (!haveReadFromMediaChunk(i)) { + newQueueSize = i; + break; + } + } + if (newQueueSize == currentQueueSize) { + return; + } + + long endTimeUs = getLastMediaChunk().endTimeUs; + BaseMediaChunk firstRemovedChunk = discardUpstreamMediaChunksFromIndex(newQueueSize); + if (mediaChunks.isEmpty()) { + pendingResetPositionUs = lastSeekPositionUs; + } + loadingFinished = false; + eventDispatcher.upstreamDiscarded(primaryTrackType, firstRemovedChunk.startTimeUs, endTimeUs); + } + + // Internal methods + + private boolean isMediaChunk(Chunk chunk) { + return chunk instanceof BaseMediaChunk; + } + + /** Returns whether samples have been read from media chunk at given index. */ + private boolean haveReadFromMediaChunk(int mediaChunkIndex) { + BaseMediaChunk mediaChunk = mediaChunks.get(mediaChunkIndex); + if (primarySampleQueue.getReadIndex() > mediaChunk.getFirstSampleIndex(0)) { + return true; + } + for (int i = 0; i < embeddedSampleQueues.length; i++) { + if (embeddedSampleQueues[i].getReadIndex() > mediaChunk.getFirstSampleIndex(i + 1)) { + return true; + } + } + return false; + } + + /* package */ boolean isPendingReset() { + return pendingResetPositionUs != C.TIME_UNSET; + } + + private void discardDownstreamMediaChunks(int discardToSampleIndex) { + int discardToMediaChunkIndex = + primarySampleIndexToMediaChunkIndex(discardToSampleIndex, /* minChunkIndex= */ 0); + // Don't discard any chunks that we haven't reported the primary format change for yet. + discardToMediaChunkIndex = + Math.min(discardToMediaChunkIndex, nextNotifyPrimaryFormatMediaChunkIndex); + if (discardToMediaChunkIndex > 0) { + Util.removeRange(mediaChunks, /* fromIndex= */ 0, /* toIndex= */ discardToMediaChunkIndex); + nextNotifyPrimaryFormatMediaChunkIndex -= discardToMediaChunkIndex; + } + } + + private void maybeNotifyPrimaryTrackFormatChanged() { + int readSampleIndex = primarySampleQueue.getReadIndex(); + int notifyToMediaChunkIndex = + primarySampleIndexToMediaChunkIndex( + readSampleIndex, /* minChunkIndex= */ nextNotifyPrimaryFormatMediaChunkIndex - 1); + while (nextNotifyPrimaryFormatMediaChunkIndex <= notifyToMediaChunkIndex) { + maybeNotifyPrimaryTrackFormatChanged(nextNotifyPrimaryFormatMediaChunkIndex++); + } + } + + private void maybeNotifyPrimaryTrackFormatChanged(int mediaChunkReadIndex) { + BaseMediaChunk currentChunk = mediaChunks.get(mediaChunkReadIndex); + Format trackFormat = currentChunk.trackFormat; + if (!trackFormat.equals(primaryDownstreamTrackFormat)) { + eventDispatcher.downstreamFormatChanged(primaryTrackType, trackFormat, + currentChunk.trackSelectionReason, currentChunk.trackSelectionData, + currentChunk.startTimeUs); + } + primaryDownstreamTrackFormat = trackFormat; + } + + /** + * Returns the media chunk index corresponding to a given primary sample index. + * + * @param primarySampleIndex The primary sample index for which the corresponding media chunk + * index is required. + * @param minChunkIndex A minimum chunk index from which to start searching, or -1 if no hint can + * be provided. + * @return The index of the media chunk corresponding to the sample index, or -1 if the list of + * media chunks is empty, or {@code minChunkIndex} if the sample precedes the first chunk in + * the search (i.e. the chunk at {@code minChunkIndex}, or at index 0 if {@code minChunkIndex} + * is -1. + */ + private int primarySampleIndexToMediaChunkIndex(int primarySampleIndex, int minChunkIndex) { + for (int i = minChunkIndex + 1; i < mediaChunks.size(); i++) { + if (mediaChunks.get(i).getFirstSampleIndex(0) > primarySampleIndex) { + return i - 1; + } + } + return mediaChunks.size() - 1; + } + + private BaseMediaChunk getLastMediaChunk() { + return mediaChunks.get(mediaChunks.size() - 1); + } + + /** + * Discard upstream media chunks from {@code chunkIndex} and corresponding samples from sample + * queues. + * + * @param chunkIndex The index of the first chunk to discard. + * @return The chunk at given index. + */ + private BaseMediaChunk discardUpstreamMediaChunksFromIndex(int chunkIndex) { + BaseMediaChunk firstRemovedChunk = mediaChunks.get(chunkIndex); + Util.removeRange(mediaChunks, /* fromIndex= */ chunkIndex, /* toIndex= */ mediaChunks.size()); + nextNotifyPrimaryFormatMediaChunkIndex = + Math.max(nextNotifyPrimaryFormatMediaChunkIndex, mediaChunks.size()); + primarySampleQueue.discardUpstreamSamples(firstRemovedChunk.getFirstSampleIndex(0)); + for (int i = 0; i < embeddedSampleQueues.length; i++) { + embeddedSampleQueues[i].discardUpstreamSamples(firstRemovedChunk.getFirstSampleIndex(i + 1)); + } + return firstRemovedChunk; + } + + /** + * A {@link SampleStream} embedded in a {@link ChunkSampleStream}. + */ + public final class EmbeddedSampleStream implements SampleStream { + + public final ChunkSampleStream parent; + + private final SampleQueue sampleQueue; + private final int index; + + private boolean notifiedDownstreamFormat; + + public EmbeddedSampleStream(ChunkSampleStream parent, SampleQueue sampleQueue, int index) { + this.parent = parent; + this.sampleQueue = sampleQueue; + this.index = index; + } + + @Override + public boolean isReady() { + return !isPendingReset() && sampleQueue.isReady(loadingFinished); + } + + @Override + public int skipData(long positionUs) { + if (isPendingReset()) { + return 0; + } + maybeNotifyDownstreamFormat(); + int skipCount; + if (loadingFinished && positionUs > sampleQueue.getLargestQueuedTimestampUs()) { + skipCount = sampleQueue.advanceToEnd(); + } else { + skipCount = sampleQueue.advanceTo(positionUs); + } + return skipCount; + } + + @Override + public void maybeThrowError() throws IOException { + // Do nothing. Errors will be thrown from the primary stream. + } + + @Override + public int readData(FormatHolder formatHolder, DecoderInputBuffer buffer, + boolean formatRequired) { + if (isPendingReset()) { + return C.RESULT_NOTHING_READ; + } + maybeNotifyDownstreamFormat(); + return sampleQueue.read( + formatHolder, + buffer, + formatRequired, + loadingFinished, + decodeOnlyUntilPositionUs); + } + + public void release() { + Assertions.checkState(embeddedTracksSelected[index]); + embeddedTracksSelected[index] = false; + } + + private void maybeNotifyDownstreamFormat() { + if (!notifiedDownstreamFormat) { + eventDispatcher.downstreamFormatChanged( + embeddedTrackTypes[index], + embeddedTrackFormats[index], + C.SELECTION_REASON_UNKNOWN, + /* trackSelectionData= */ null, + lastSeekPositionUs); + notifiedDownstreamFormat = true; + } + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkSource.java new file mode 100644 index 0000000000..33cee8e20e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ChunkSource.java @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import java.io.IOException; +import java.util.List; + +/** + * A provider of {@link Chunk}s for a {@link ChunkSampleStream} to load. + */ +public interface ChunkSource { + + /** + * Adjusts a seek position given the specified {@link SeekParameters}. Chunk boundaries are used + * as sync points. + * + * @param positionUs The seek position in microseconds. + * @param seekParameters Parameters that control how the seek is performed. + * @return The adjusted seek position, in microseconds. + */ + long getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters); + + /** + * If the source is currently having difficulty providing chunks, then this method throws the + * underlying error. Otherwise does nothing. + *

+ * This method should only be called after the source has been prepared. + * + * @throws IOException The underlying error. + */ + void maybeThrowError() throws IOException; + + /** + * Evaluates whether {@link MediaChunk}s should be removed from the back of the queue. + *

+ * Removing {@link MediaChunk}s from the back of the queue can be useful if they could be replaced + * with chunks of a significantly higher quality (e.g. because the available bandwidth has + * substantially increased). + * + * @param playbackPositionUs The current playback position. + * @param queue The queue of buffered {@link MediaChunk}s. + * @return The preferred queue size. + */ + int getPreferredQueueSize(long playbackPositionUs, List queue); + + /** + * Returns the next chunk to load. + * + *

If a chunk is available then {@link ChunkHolder#chunk} is set. If the end of the stream has + * been reached then {@link ChunkHolder#endOfStream} is set. If a chunk is not available but the + * end of the stream has not been reached, the {@link ChunkHolder} is not modified. + * + * @param playbackPositionUs The current playback position in microseconds. If playback of the + * period to which this chunk source belongs has not yet started, the value will be the + * starting position in the period minus the duration of any media in previous periods still + * to be played. + * @param loadPositionUs The current load position in microseconds. If {@code queue} is empty, + * this is the starting position from which chunks should be provided. Else it's equal to + * {@link MediaChunk#endTimeUs} of the last chunk in the {@code queue}. + * @param queue The queue of buffered {@link MediaChunk}s. + * @param out A holder to populate. + */ + void getNextChunk( + long playbackPositionUs, + long loadPositionUs, + List queue, + ChunkHolder out); + + /** + * Called when the {@link ChunkSampleStream} has finished loading a chunk obtained from this + * source. + * + *

This method should only be called when the source is enabled. + * + * @param chunk The chunk whose load has been completed. + */ + void onChunkLoadCompleted(Chunk chunk); + + /** + * Called when the {@link ChunkSampleStream} encounters an error loading a chunk obtained from + * this source. + * + *

This method should only be called when the source is enabled. + * + * @param chunk The chunk whose load encountered the error. + * @param cancelable Whether the load can be canceled. + * @param e The error. + * @param blacklistDurationMs The duration for which the associated track may be blacklisted, or + * {@link C#TIME_UNSET} if the track may not be blacklisted. + * @return Whether the load should be canceled so that a replacement chunk can be loaded instead. + * Must be {@code false} if {@code cancelable} is {@code false}. If {@code true}, {@link + * #getNextChunk(long, long, List, ChunkHolder)} will be called to obtain the replacement + * chunk. + */ + boolean onChunkLoadError(Chunk chunk, boolean cancelable, Exception e, long blacklistDurationMs); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ContainerMediaChunk.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ContainerMediaChunk.java new file mode 100644 index 0000000000..98865e8b0e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/ContainerMediaChunk.java @@ -0,0 +1,157 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DefaultExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.ChunkExtractorWrapper.TrackOutputProvider; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** + * A {@link BaseMediaChunk} that uses an {@link Extractor} to decode sample data. + */ +public class ContainerMediaChunk extends BaseMediaChunk { + + private static final PositionHolder DUMMY_POSITION_HOLDER = new PositionHolder(); + + private final int chunkCount; + private final long sampleOffsetUs; + private final ChunkExtractorWrapper extractorWrapper; + + private long nextLoadPosition; + private volatile boolean loadCanceled; + private boolean loadCompleted; + + /** + * @param dataSource The source from which the data should be loaded. + * @param dataSpec Defines the data to be loaded. + * @param trackFormat See {@link #trackFormat}. + * @param trackSelectionReason See {@link #trackSelectionReason}. + * @param trackSelectionData See {@link #trackSelectionData}. + * @param startTimeUs The start time of the media contained by the chunk, in microseconds. + * @param endTimeUs The end time of the media contained by the chunk, in microseconds. + * @param clippedStartTimeUs The time in the chunk from which output will begin, or {@link + * C#TIME_UNSET} to output from the start of the chunk. + * @param clippedEndTimeUs The time in the chunk from which output will end, or {@link + * C#TIME_UNSET} to output to the end of the chunk. + * @param chunkIndex The index of the chunk, or {@link C#INDEX_UNSET} if it is not known. + * @param chunkCount The number of chunks in the underlying media that are spanned by this + * instance. Normally equal to one, but may be larger if multiple chunks as defined by the + * underlying media are being merged into a single load. + * @param sampleOffsetUs An offset to add to the sample timestamps parsed by the extractor. + * @param extractorWrapper A wrapped extractor to use for parsing the data. + */ + public ContainerMediaChunk( + DataSource dataSource, + DataSpec dataSpec, + Format trackFormat, + int trackSelectionReason, + Object trackSelectionData, + long startTimeUs, + long endTimeUs, + long clippedStartTimeUs, + long clippedEndTimeUs, + long chunkIndex, + int chunkCount, + long sampleOffsetUs, + ChunkExtractorWrapper extractorWrapper) { + super( + dataSource, + dataSpec, + trackFormat, + trackSelectionReason, + trackSelectionData, + startTimeUs, + endTimeUs, + clippedStartTimeUs, + clippedEndTimeUs, + chunkIndex); + this.chunkCount = chunkCount; + this.sampleOffsetUs = sampleOffsetUs; + this.extractorWrapper = extractorWrapper; + } + + @Override + public long getNextChunkIndex() { + return chunkIndex + chunkCount; + } + + @Override + public boolean isLoadCompleted() { + return loadCompleted; + } + + // Loadable implementation. + + @Override + public final void cancelLoad() { + loadCanceled = true; + } + + @SuppressWarnings("NonAtomicVolatileUpdate") + @Override + public final void load() throws IOException, InterruptedException { + if (nextLoadPosition == 0) { + // Configure the output and set it as the target for the extractor wrapper. + BaseMediaChunkOutput output = getOutput(); + output.setSampleOffsetUs(sampleOffsetUs); + extractorWrapper.init( + getTrackOutputProvider(output), + clippedStartTimeUs == C.TIME_UNSET ? C.TIME_UNSET : (clippedStartTimeUs - sampleOffsetUs), + clippedEndTimeUs == C.TIME_UNSET ? C.TIME_UNSET : (clippedEndTimeUs - sampleOffsetUs)); + } + try { + // Create and open the input. + DataSpec loadDataSpec = dataSpec.subrange(nextLoadPosition); + ExtractorInput input = + new DefaultExtractorInput( + dataSource, loadDataSpec.absoluteStreamPosition, dataSource.open(loadDataSpec)); + // Load and decode the sample data. + try { + Extractor extractor = extractorWrapper.extractor; + int result = Extractor.RESULT_CONTINUE; + while (result == Extractor.RESULT_CONTINUE && !loadCanceled) { + result = extractor.read(input, DUMMY_POSITION_HOLDER); + } + Assertions.checkState(result != Extractor.RESULT_SEEK); + } finally { + nextLoadPosition = input.getPosition() - dataSpec.absoluteStreamPosition; + } + } finally { + Util.closeQuietly(dataSource); + } + loadCompleted = true; + } + + /** + * Returns the {@link TrackOutputProvider} to be used by the wrapped extractor. + * + * @param baseMediaChunkOutput The {@link BaseMediaChunkOutput} most recently passed to {@link + * #init(BaseMediaChunkOutput)}. + * @return A {@link TrackOutputProvider} to be used by the wrapped extractor. + */ + protected TrackOutputProvider getTrackOutputProvider(BaseMediaChunkOutput baseMediaChunkOutput) { + return baseMediaChunkOutput; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/DataChunk.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/DataChunk.java new file mode 100644 index 0000000000..583f8ceeee --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/DataChunk.java @@ -0,0 +1,119 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.Arrays; + +/** + * A base class for {@link Chunk} implementations where the data should be loaded into a + * {@code byte[]} before being consumed. + */ +public abstract class DataChunk extends Chunk { + + private static final int READ_GRANULARITY = 16 * 1024; + + private byte[] data; + + private volatile boolean loadCanceled; + + /** + * @param dataSource The source from which the data should be loaded. + * @param dataSpec Defines the data to be loaded. + * @param type See {@link #type}. + * @param trackFormat See {@link #trackFormat}. + * @param trackSelectionReason See {@link #trackSelectionReason}. + * @param trackSelectionData See {@link #trackSelectionData}. + * @param data An optional recycled array that can be used as a holder for the data. + */ + public DataChunk( + DataSource dataSource, + DataSpec dataSpec, + int type, + Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + byte[] data) { + super(dataSource, dataSpec, type, trackFormat, trackSelectionReason, trackSelectionData, + C.TIME_UNSET, C.TIME_UNSET); + this.data = data; + } + + /** + * Returns the array in which the data is held. + *

+ * This method should be used for recycling the holder only, and not for reading the data. + * + * @return The array in which the data is held. + */ + public byte[] getDataHolder() { + return data; + } + + // Loadable implementation + + @Override + public final void cancelLoad() { + loadCanceled = true; + } + + @Override + public final void load() throws IOException, InterruptedException { + try { + dataSource.open(dataSpec); + int limit = 0; + int bytesRead = 0; + while (bytesRead != C.RESULT_END_OF_INPUT && !loadCanceled) { + maybeExpandData(limit); + bytesRead = dataSource.read(data, limit, READ_GRANULARITY); + if (bytesRead != -1) { + limit += bytesRead; + } + } + if (!loadCanceled) { + consume(data, limit); + } + } finally { + Util.closeQuietly(dataSource); + } + } + + /** + * Called by {@link #load()}. Implementations should override this method to consume the loaded + * data. + * + * @param data An array containing the data. + * @param limit The limit of the data. + * @throws IOException If an error occurs consuming the loaded data. + */ + protected abstract void consume(byte[] data, int limit) throws IOException; + + private void maybeExpandData(int limit) { + if (data == null) { + data = new byte[READ_GRANULARITY]; + } else if (data.length < limit + READ_GRANULARITY) { + // The new length is calculated as (data.length + READ_GRANULARITY) rather than + // (limit + READ_GRANULARITY) in order to avoid small increments in the length. + data = Arrays.copyOf(data, data.length + READ_GRANULARITY); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/InitializationChunk.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/InitializationChunk.java new file mode 100644 index 0000000000..db6e82c2c7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/InitializationChunk.java @@ -0,0 +1,112 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DefaultExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.ChunkExtractorWrapper.TrackOutputProvider; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * A {@link Chunk} that uses an {@link Extractor} to decode initialization data for single track. + */ +public final class InitializationChunk extends Chunk { + + private static final PositionHolder DUMMY_POSITION_HOLDER = new PositionHolder(); + + private final ChunkExtractorWrapper extractorWrapper; + + @MonotonicNonNull private TrackOutputProvider trackOutputProvider; + private long nextLoadPosition; + private volatile boolean loadCanceled; + + /** + * @param dataSource The source from which the data should be loaded. + * @param dataSpec Defines the data to be loaded. + * @param trackFormat See {@link #trackFormat}. + * @param trackSelectionReason See {@link #trackSelectionReason}. + * @param trackSelectionData See {@link #trackSelectionData}. + * @param extractorWrapper A wrapped extractor to use for parsing the initialization data. + */ + public InitializationChunk( + DataSource dataSource, + DataSpec dataSpec, + Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + ChunkExtractorWrapper extractorWrapper) { + super(dataSource, dataSpec, C.DATA_TYPE_MEDIA_INITIALIZATION, trackFormat, trackSelectionReason, + trackSelectionData, C.TIME_UNSET, C.TIME_UNSET); + this.extractorWrapper = extractorWrapper; + } + + /** + * Initializes the chunk for loading, setting a {@link TrackOutputProvider} for track outputs to + * which formats will be written as they are loaded. + * + * @param trackOutputProvider The {@link TrackOutputProvider} for track outputs to which formats + * will be written as they are loaded. + */ + public void init(TrackOutputProvider trackOutputProvider) { + this.trackOutputProvider = trackOutputProvider; + } + + // Loadable implementation. + + @Override + public void cancelLoad() { + loadCanceled = true; + } + + @SuppressWarnings("NonAtomicVolatileUpdate") + @Override + public void load() throws IOException, InterruptedException { + if (nextLoadPosition == 0) { + extractorWrapper.init( + trackOutputProvider, /* startTimeUs= */ C.TIME_UNSET, /* endTimeUs= */ C.TIME_UNSET); + } + try { + // Create and open the input. + DataSpec loadDataSpec = dataSpec.subrange(nextLoadPosition); + ExtractorInput input = + new DefaultExtractorInput( + dataSource, loadDataSpec.absoluteStreamPosition, dataSource.open(loadDataSpec)); + // Load and decode the initialization data. + try { + Extractor extractor = extractorWrapper.extractor; + int result = Extractor.RESULT_CONTINUE; + while (result == Extractor.RESULT_CONTINUE && !loadCanceled) { + result = extractor.read(input, DUMMY_POSITION_HOLDER); + } + Assertions.checkState(result != Extractor.RESULT_SEEK); + } finally { + nextLoadPosition = input.getPosition() - dataSpec.absoluteStreamPosition; + } + } finally { + Util.closeQuietly(dataSource); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/MediaChunk.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/MediaChunk.java new file mode 100644 index 0000000000..81c9d216b9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/MediaChunk.java @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * An abstract base class for {@link Chunk}s that contain media samples. + */ +public abstract class MediaChunk extends Chunk { + + /** The chunk index, or {@link C#INDEX_UNSET} if it is not known. */ + public final long chunkIndex; + + /** + * @param dataSource The source from which the data should be loaded. + * @param dataSpec Defines the data to be loaded. + * @param trackFormat See {@link #trackFormat}. + * @param trackSelectionReason See {@link #trackSelectionReason}. + * @param trackSelectionData See {@link #trackSelectionData}. + * @param startTimeUs The start time of the media contained by the chunk, in microseconds. + * @param endTimeUs The end time of the media contained by the chunk, in microseconds. + * @param chunkIndex The index of the chunk, or {@link C#INDEX_UNSET} if it is not known. + */ + public MediaChunk( + DataSource dataSource, + DataSpec dataSpec, + Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + long startTimeUs, + long endTimeUs, + long chunkIndex) { + super(dataSource, dataSpec, C.DATA_TYPE_MEDIA, trackFormat, trackSelectionReason, + trackSelectionData, startTimeUs, endTimeUs); + Assertions.checkNotNull(trackFormat); + this.chunkIndex = chunkIndex; + } + + /** Returns the next chunk index or {@link C#INDEX_UNSET} if it is not known. */ + public long getNextChunkIndex() { + return chunkIndex != C.INDEX_UNSET ? chunkIndex + 1 : C.INDEX_UNSET; + } + + /** + * Returns whether the chunk has been fully loaded. + */ + public abstract boolean isLoadCompleted(); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/MediaChunkIterator.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/MediaChunkIterator.java new file mode 100644 index 0000000000..c6f5b1d41e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/MediaChunkIterator.java @@ -0,0 +1,104 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import java.util.NoSuchElementException; + +/** + * Iterator for media chunk sequences. + * + *

The iterator initially points in front of the first available element. The first call to + * {@link #next()} moves the iterator to the first element. Check the return value of {@link + * #next()} or {@link #isEnded()} to determine whether the iterator reached the end of the available + * data. + */ +public interface MediaChunkIterator { + + /** An empty media chunk iterator without available data. */ + MediaChunkIterator EMPTY = + new MediaChunkIterator() { + @Override + public boolean isEnded() { + return true; + } + + @Override + public boolean next() { + return false; + } + + @Override + public DataSpec getDataSpec() { + throw new NoSuchElementException(); + } + + @Override + public long getChunkStartTimeUs() { + throw new NoSuchElementException(); + } + + @Override + public long getChunkEndTimeUs() { + throw new NoSuchElementException(); + } + + @Override + public void reset() { + // Do nothing. + } + }; + + /** Returns whether the iteration has reached the end of the available data. */ + boolean isEnded(); + + /** + * Moves the iterator to the next media chunk. + * + *

Check the return value or {@link #isEnded()} to determine whether the iterator reached the + * end of the available data. + * + * @return Whether the iterator points to a media chunk with available data. + */ + boolean next(); + + /** + * Returns the {@link DataSpec} used to load the media chunk. + * + * @throws java.util.NoSuchElementException If the method is called before the first call to + * {@link #next()} or when {@link #isEnded()} is true. + */ + DataSpec getDataSpec(); + + /** + * Returns the media start time of the chunk, in microseconds. + * + * @throws java.util.NoSuchElementException If the method is called before the first call to + * {@link #next()} or when {@link #isEnded()} is true. + */ + long getChunkStartTimeUs(); + + /** + * Returns the media end time of the chunk, in microseconds. + * + * @throws java.util.NoSuchElementException If the method is called before the first call to + * {@link #next()} or when {@link #isEnded()} is true. + */ + long getChunkEndTimeUs(); + + /** Resets the iterator to the initial position. */ + void reset(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/MediaChunkListIterator.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/MediaChunkListIterator.java new file mode 100644 index 0000000000..1b3004418e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/MediaChunkListIterator.java @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import java.util.List; + +/** A {@link MediaChunkIterator} which iterates over a {@link List} of {@link MediaChunk}s. */ +public final class MediaChunkListIterator extends BaseMediaChunkIterator { + + private final List chunks; + private final boolean reverseOrder; + + /** + * Creates iterator. + * + * @param chunks The list of chunks to iterate over. + * @param reverseOrder Whether to iterate in reverse order. + */ + public MediaChunkListIterator(List chunks, boolean reverseOrder) { + super(0, chunks.size() - 1); + this.chunks = chunks; + this.reverseOrder = reverseOrder; + } + + @Override + public DataSpec getDataSpec() { + return getCurrentChunk().dataSpec; + } + + @Override + public long getChunkStartTimeUs() { + return getCurrentChunk().startTimeUs; + } + + @Override + public long getChunkEndTimeUs() { + return getCurrentChunk().endTimeUs; + } + + private MediaChunk getCurrentChunk() { + int index = (int) super.getCurrentIndex(); + if (reverseOrder) { + index = chunks.size() - 1 - index; + } + return chunks.get(index); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/SingleSampleMediaChunk.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/SingleSampleMediaChunk.java new file mode 100644 index 0000000000..b3d30408ee --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/chunk/SingleSampleMediaChunk.java @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DefaultExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; + +/** + * A {@link BaseMediaChunk} for chunks consisting of a single raw sample. + */ +public final class SingleSampleMediaChunk extends BaseMediaChunk { + + private final int trackType; + private final Format sampleFormat; + + private long nextLoadPosition; + private boolean loadCompleted; + + /** + * @param dataSource The source from which the data should be loaded. + * @param dataSpec Defines the data to be loaded. + * @param trackFormat See {@link #trackFormat}. + * @param trackSelectionReason See {@link #trackSelectionReason}. + * @param trackSelectionData See {@link #trackSelectionData}. + * @param startTimeUs The start time of the media contained by the chunk, in microseconds. + * @param endTimeUs The end time of the media contained by the chunk, in microseconds. + * @param chunkIndex The index of the chunk, or {@link C#INDEX_UNSET} if it is not known. + * @param trackType The type of the chunk. Typically one of the {@link C} {@code TRACK_TYPE_*} + * constants. + * @param sampleFormat The {@link Format} of the sample in the chunk. + */ + public SingleSampleMediaChunk( + DataSource dataSource, + DataSpec dataSpec, + Format trackFormat, + int trackSelectionReason, + Object trackSelectionData, + long startTimeUs, + long endTimeUs, + long chunkIndex, + int trackType, + Format sampleFormat) { + super( + dataSource, + dataSpec, + trackFormat, + trackSelectionReason, + trackSelectionData, + startTimeUs, + endTimeUs, + /* clippedStartTimeUs= */ C.TIME_UNSET, + /* clippedEndTimeUs= */ C.TIME_UNSET, + chunkIndex); + this.trackType = trackType; + this.sampleFormat = sampleFormat; + } + + + @Override + public boolean isLoadCompleted() { + return loadCompleted; + } + + // Loadable implementation. + + @Override + public void cancelLoad() { + // Do nothing. + } + + @SuppressWarnings("NonAtomicVolatileUpdate") + @Override + public void load() throws IOException, InterruptedException { + BaseMediaChunkOutput output = getOutput(); + output.setSampleOffsetUs(0); + TrackOutput trackOutput = output.track(0, trackType); + trackOutput.format(sampleFormat); + try { + // Create and open the input. + DataSpec loadDataSpec = dataSpec.subrange(nextLoadPosition); + long length = dataSource.open(loadDataSpec); + if (length != C.LENGTH_UNSET) { + length += nextLoadPosition; + } + ExtractorInput extractorInput = + new DefaultExtractorInput(dataSource, nextLoadPosition, length); + // Load the sample data. + int result = 0; + while (result != C.RESULT_END_OF_INPUT) { + nextLoadPosition += result; + result = trackOutput.sampleData(extractorInput, Integer.MAX_VALUE, true); + } + int sampleSize = (int) nextLoadPosition; + trackOutput.sampleMetadata(startTimeUs, C.BUFFER_FLAG_KEY_FRAME, sampleSize, 0, null); + } finally { + Util.closeQuietly(dataSource); + } + loadCompleted = true; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/Aes128DataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/Aes128DataSource.java new file mode 100644 index 0000000000..4643c0402c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/Aes128DataSource.java @@ -0,0 +1,129 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSourceInputStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.security.InvalidAlgorithmParameterException; +import java.security.InvalidKeyException; +import java.security.Key; +import java.security.NoSuchAlgorithmException; +import java.security.spec.AlgorithmParameterSpec; +import java.util.List; +import java.util.Map; +import javax.crypto.Cipher; +import javax.crypto.CipherInputStream; +import javax.crypto.NoSuchPaddingException; +import javax.crypto.spec.IvParameterSpec; +import javax.crypto.spec.SecretKeySpec; + +/** + * A {@link DataSource} that decrypts data read from an upstream source, encrypted with AES-128 with + * a 128-bit key and PKCS7 padding. + * + *

Note that this {@link DataSource} does not support being opened from arbitrary offsets. It is + * designed specifically for reading whole files as defined in an HLS media playlist. For this + * reason the implementation is private to the HLS package. + */ +/* package */ class Aes128DataSource implements DataSource { + + private final DataSource upstream; + private final byte[] encryptionKey; + private final byte[] encryptionIv; + + @Nullable private CipherInputStream cipherInputStream; + + /** + * @param upstream The upstream {@link DataSource}. + * @param encryptionKey The encryption key. + * @param encryptionIv The encryption initialization vector. + */ + public Aes128DataSource(DataSource upstream, byte[] encryptionKey, byte[] encryptionIv) { + this.upstream = upstream; + this.encryptionKey = encryptionKey; + this.encryptionIv = encryptionIv; + } + + @Override + public final void addTransferListener(TransferListener transferListener) { + upstream.addTransferListener(transferListener); + } + + @Override + public final long open(DataSpec dataSpec) throws IOException { + Cipher cipher; + try { + cipher = getCipherInstance(); + } catch (NoSuchAlgorithmException | NoSuchPaddingException e) { + throw new RuntimeException(e); + } + + Key cipherKey = new SecretKeySpec(encryptionKey, "AES"); + AlgorithmParameterSpec cipherIV = new IvParameterSpec(encryptionIv); + + try { + cipher.init(Cipher.DECRYPT_MODE, cipherKey, cipherIV); + } catch (InvalidKeyException | InvalidAlgorithmParameterException e) { + throw new RuntimeException(e); + } + + DataSourceInputStream inputStream = new DataSourceInputStream(upstream, dataSpec); + cipherInputStream = new CipherInputStream(inputStream, cipher); + inputStream.open(); + + return C.LENGTH_UNSET; + } + + @Override + public final int read(byte[] buffer, int offset, int readLength) throws IOException { + Assertions.checkNotNull(cipherInputStream); + int bytesRead = cipherInputStream.read(buffer, offset, readLength); + if (bytesRead < 0) { + return C.RESULT_END_OF_INPUT; + } + return bytesRead; + } + + @Override + @Nullable + public final Uri getUri() { + return upstream.getUri(); + } + + @Override + public final Map> getResponseHeaders() { + return upstream.getResponseHeaders(); + } + + @Override + public void close() throws IOException { + if (cipherInputStream != null) { + cipherInputStream = null; + upstream.close(); + } + } + + protected Cipher getCipherInstance() throws NoSuchPaddingException, NoSuchAlgorithmException { + return Cipher.getInstance("AES/CBC/PKCS7Padding"); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/DefaultHlsDataSourceFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/DefaultHlsDataSourceFactory.java new file mode 100644 index 0000000000..cbe2f797b7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/DefaultHlsDataSourceFactory.java @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; + +/** + * Default implementation of {@link HlsDataSourceFactory}. + */ +public final class DefaultHlsDataSourceFactory implements HlsDataSourceFactory { + + private final DataSource.Factory dataSourceFactory; + + /** + * @param dataSourceFactory The {@link DataSource.Factory} to use for all data types. + */ + public DefaultHlsDataSourceFactory(DataSource.Factory dataSourceFactory) { + this.dataSourceFactory = dataSourceFactory; + } + + @Override + public DataSource createDataSource(int dataType) { + return dataSourceFactory.createDataSource(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/DefaultHlsExtractorFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/DefaultHlsExtractorFactory.java new file mode 100644 index 0000000000..6f39e1bff8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/DefaultHlsExtractorFactory.java @@ -0,0 +1,338 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.net.Uri; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp3.Mp3Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4.FragmentedMp4Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.Ac3Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.Ac4Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.AdtsExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.DefaultTsPayloadReaderFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ts.TsExtractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import java.io.EOFException; +import java.io.IOException; +import java.util.Collections; +import java.util.List; +import java.util.Map; + +/** + * Default {@link HlsExtractorFactory} implementation. + */ +public final class DefaultHlsExtractorFactory implements HlsExtractorFactory { + + public static final String AAC_FILE_EXTENSION = ".aac"; + public static final String AC3_FILE_EXTENSION = ".ac3"; + public static final String EC3_FILE_EXTENSION = ".ec3"; + public static final String AC4_FILE_EXTENSION = ".ac4"; + public static final String MP3_FILE_EXTENSION = ".mp3"; + public static final String MP4_FILE_EXTENSION = ".mp4"; + public static final String M4_FILE_EXTENSION_PREFIX = ".m4"; + public static final String MP4_FILE_EXTENSION_PREFIX = ".mp4"; + public static final String CMF_FILE_EXTENSION_PREFIX = ".cmf"; + public static final String VTT_FILE_EXTENSION = ".vtt"; + public static final String WEBVTT_FILE_EXTENSION = ".webvtt"; + + @DefaultTsPayloadReaderFactory.Flags private final int payloadReaderFactoryFlags; + private final boolean exposeCea608WhenMissingDeclarations; + + /** + * Equivalent to {@link #DefaultHlsExtractorFactory(int, boolean) new + * DefaultHlsExtractorFactory(payloadReaderFactoryFlags = 0, exposeCea608WhenMissingDeclarations = + * true)} + */ + public DefaultHlsExtractorFactory() { + this(/* payloadReaderFactoryFlags= */ 0, /* exposeCea608WhenMissingDeclarations */ true); + } + + /** + * Creates a factory for HLS segment extractors. + * + * @param payloadReaderFactoryFlags Flags to add when constructing any {@link + * DefaultTsPayloadReaderFactory} instances. Other flags may be added on top of {@code + * payloadReaderFactoryFlags} when creating {@link DefaultTsPayloadReaderFactory}. + * @param exposeCea608WhenMissingDeclarations Whether created {@link TsExtractor} instances should + * expose a CEA-608 track should the master playlist contain no Closed Captions declarations. + * If the master playlist contains any Closed Captions declarations, this flag is ignored. + */ + public DefaultHlsExtractorFactory( + int payloadReaderFactoryFlags, boolean exposeCea608WhenMissingDeclarations) { + this.payloadReaderFactoryFlags = payloadReaderFactoryFlags; + this.exposeCea608WhenMissingDeclarations = exposeCea608WhenMissingDeclarations; + } + + @Override + public Result createExtractor( + @Nullable Extractor previousExtractor, + Uri uri, + Format format, + @Nullable List muxedCaptionFormats, + TimestampAdjuster timestampAdjuster, + Map> responseHeaders, + ExtractorInput extractorInput) + throws InterruptedException, IOException { + + if (previousExtractor != null) { + // A extractor has already been successfully used. Return one of the same type. + if (isReusable(previousExtractor)) { + return buildResult(previousExtractor); + } else { + Result result = + buildResultForSameExtractorType(previousExtractor, format, timestampAdjuster); + if (result == null) { + throw new IllegalArgumentException( + "Unexpected previousExtractor type: " + previousExtractor.getClass().getSimpleName()); + } + } + } + + // Try selecting the extractor by the file extension. + Extractor extractorByFileExtension = + createExtractorByFileExtension(uri, format, muxedCaptionFormats, timestampAdjuster); + extractorInput.resetPeekPosition(); + if (sniffQuietly(extractorByFileExtension, extractorInput)) { + return buildResult(extractorByFileExtension); + } + + // We need to manually sniff each known type, without retrying the one selected by file + // extension. + + if (!(extractorByFileExtension instanceof WebvttExtractor)) { + WebvttExtractor webvttExtractor = new WebvttExtractor(format.language, timestampAdjuster); + if (sniffQuietly(webvttExtractor, extractorInput)) { + return buildResult(webvttExtractor); + } + } + + if (!(extractorByFileExtension instanceof AdtsExtractor)) { + AdtsExtractor adtsExtractor = new AdtsExtractor(); + if (sniffQuietly(adtsExtractor, extractorInput)) { + return buildResult(adtsExtractor); + } + } + + if (!(extractorByFileExtension instanceof Ac3Extractor)) { + Ac3Extractor ac3Extractor = new Ac3Extractor(); + if (sniffQuietly(ac3Extractor, extractorInput)) { + return buildResult(ac3Extractor); + } + } + + if (!(extractorByFileExtension instanceof Ac4Extractor)) { + Ac4Extractor ac4Extractor = new Ac4Extractor(); + if (sniffQuietly(ac4Extractor, extractorInput)) { + return buildResult(ac4Extractor); + } + } + + if (!(extractorByFileExtension instanceof Mp3Extractor)) { + Mp3Extractor mp3Extractor = + new Mp3Extractor(/* flags= */ 0, /* forcedFirstSampleTimestampUs= */ 0); + if (sniffQuietly(mp3Extractor, extractorInput)) { + return buildResult(mp3Extractor); + } + } + + if (!(extractorByFileExtension instanceof FragmentedMp4Extractor)) { + FragmentedMp4Extractor fragmentedMp4Extractor = + createFragmentedMp4Extractor(timestampAdjuster, format, muxedCaptionFormats); + if (sniffQuietly(fragmentedMp4Extractor, extractorInput)) { + return buildResult(fragmentedMp4Extractor); + } + } + + if (!(extractorByFileExtension instanceof TsExtractor)) { + TsExtractor tsExtractor = + createTsExtractor( + payloadReaderFactoryFlags, + exposeCea608WhenMissingDeclarations, + format, + muxedCaptionFormats, + timestampAdjuster); + if (sniffQuietly(tsExtractor, extractorInput)) { + return buildResult(tsExtractor); + } + } + + // Fall back on the extractor created by file extension. + return buildResult(extractorByFileExtension); + } + + private Extractor createExtractorByFileExtension( + Uri uri, + Format format, + @Nullable List muxedCaptionFormats, + TimestampAdjuster timestampAdjuster) { + String lastPathSegment = uri.getLastPathSegment(); + if (lastPathSegment == null) { + lastPathSegment = ""; + } + if (MimeTypes.TEXT_VTT.equals(format.sampleMimeType) + || lastPathSegment.endsWith(WEBVTT_FILE_EXTENSION) + || lastPathSegment.endsWith(VTT_FILE_EXTENSION)) { + return new WebvttExtractor(format.language, timestampAdjuster); + } else if (lastPathSegment.endsWith(AAC_FILE_EXTENSION)) { + return new AdtsExtractor(); + } else if (lastPathSegment.endsWith(AC3_FILE_EXTENSION) + || lastPathSegment.endsWith(EC3_FILE_EXTENSION)) { + return new Ac3Extractor(); + } else if (lastPathSegment.endsWith(AC4_FILE_EXTENSION)) { + return new Ac4Extractor(); + } else if (lastPathSegment.endsWith(MP3_FILE_EXTENSION)) { + return new Mp3Extractor(/* flags= */ 0, /* forcedFirstSampleTimestampUs= */ 0); + } else if (lastPathSegment.endsWith(MP4_FILE_EXTENSION) + || lastPathSegment.startsWith(M4_FILE_EXTENSION_PREFIX, lastPathSegment.length() - 4) + || lastPathSegment.startsWith(MP4_FILE_EXTENSION_PREFIX, lastPathSegment.length() - 5) + || lastPathSegment.startsWith(CMF_FILE_EXTENSION_PREFIX, lastPathSegment.length() - 5)) { + return createFragmentedMp4Extractor(timestampAdjuster, format, muxedCaptionFormats); + } else { + // For any other file extension, we assume TS format. + return createTsExtractor( + payloadReaderFactoryFlags, + exposeCea608WhenMissingDeclarations, + format, + muxedCaptionFormats, + timestampAdjuster); + } + } + + private static TsExtractor createTsExtractor( + @DefaultTsPayloadReaderFactory.Flags int userProvidedPayloadReaderFactoryFlags, + boolean exposeCea608WhenMissingDeclarations, + Format format, + @Nullable List muxedCaptionFormats, + TimestampAdjuster timestampAdjuster) { + @DefaultTsPayloadReaderFactory.Flags + int payloadReaderFactoryFlags = + DefaultTsPayloadReaderFactory.FLAG_IGNORE_SPLICE_INFO_STREAM + | userProvidedPayloadReaderFactoryFlags; + if (muxedCaptionFormats != null) { + // The playlist declares closed caption renditions, we should ignore descriptors. + payloadReaderFactoryFlags |= DefaultTsPayloadReaderFactory.FLAG_OVERRIDE_CAPTION_DESCRIPTORS; + } else if (exposeCea608WhenMissingDeclarations) { + // The playlist does not provide any closed caption information. We preemptively declare a + // closed caption track on channel 0. + muxedCaptionFormats = + Collections.singletonList( + Format.createTextSampleFormat( + /* id= */ null, + MimeTypes.APPLICATION_CEA608, + /* selectionFlags= */ 0, + /* language= */ null)); + } else { + muxedCaptionFormats = Collections.emptyList(); + } + String codecs = format.codecs; + if (!TextUtils.isEmpty(codecs)) { + // Sometimes AAC and H264 streams are declared in TS chunks even though they don't really + // exist. If we know from the codec attribute that they don't exist, then we can + // explicitly ignore them even if they're declared. + if (!MimeTypes.AUDIO_AAC.equals(MimeTypes.getAudioMediaMimeType(codecs))) { + payloadReaderFactoryFlags |= DefaultTsPayloadReaderFactory.FLAG_IGNORE_AAC_STREAM; + } + if (!MimeTypes.VIDEO_H264.equals(MimeTypes.getVideoMediaMimeType(codecs))) { + payloadReaderFactoryFlags |= DefaultTsPayloadReaderFactory.FLAG_IGNORE_H264_STREAM; + } + } + + return new TsExtractor( + TsExtractor.MODE_HLS, + timestampAdjuster, + new DefaultTsPayloadReaderFactory(payloadReaderFactoryFlags, muxedCaptionFormats)); + } + + private static FragmentedMp4Extractor createFragmentedMp4Extractor( + TimestampAdjuster timestampAdjuster, + Format format, + @Nullable List muxedCaptionFormats) { + // Only enable the EMSG TrackOutput if this is the 'variant' track (i.e. the main one) to avoid + // creating a separate EMSG track for every audio track in a video stream. + return new FragmentedMp4Extractor( + /* flags= */ isFmp4Variant(format) ? FragmentedMp4Extractor.FLAG_ENABLE_EMSG_TRACK : 0, + timestampAdjuster, + /* sideloadedTrack= */ null, + muxedCaptionFormats != null ? muxedCaptionFormats : Collections.emptyList()); + } + + /** Returns true if this {@code format} represents a 'variant' track (i.e. the main one). */ + private static boolean isFmp4Variant(Format format) { + Metadata metadata = format.metadata; + if (metadata == null) { + return false; + } + for (int i = 0; i < metadata.length(); i++) { + Metadata.Entry entry = metadata.get(i); + if (entry instanceof HlsTrackMetadataEntry) { + return !((HlsTrackMetadataEntry) entry).variantInfos.isEmpty(); + } + } + return false; + } + + @Nullable + private static Result buildResultForSameExtractorType( + Extractor previousExtractor, Format format, TimestampAdjuster timestampAdjuster) { + if (previousExtractor instanceof WebvttExtractor) { + return buildResult(new WebvttExtractor(format.language, timestampAdjuster)); + } else if (previousExtractor instanceof AdtsExtractor) { + return buildResult(new AdtsExtractor()); + } else if (previousExtractor instanceof Ac3Extractor) { + return buildResult(new Ac3Extractor()); + } else if (previousExtractor instanceof Ac4Extractor) { + return buildResult(new Ac4Extractor()); + } else if (previousExtractor instanceof Mp3Extractor) { + return buildResult(new Mp3Extractor()); + } else { + return null; + } + } + + private static Result buildResult(Extractor extractor) { + return new Result( + extractor, + extractor instanceof AdtsExtractor + || extractor instanceof Ac3Extractor + || extractor instanceof Ac4Extractor + || extractor instanceof Mp3Extractor, + isReusable(extractor)); + } + + private static boolean sniffQuietly(Extractor extractor, ExtractorInput input) + throws InterruptedException, IOException { + boolean result = false; + try { + result = extractor.sniff(input); + } catch (EOFException e) { + // Do nothing. + } finally { + input.resetPeekPosition(); + } + return result; + } + + private static boolean isReusable(Extractor previousExtractor) { + return previousExtractor instanceof TsExtractor + || previousExtractor instanceof FragmentedMp4Extractor; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/FullSegmentEncryptionKeyCache.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/FullSegmentEncryptionKeyCache.java new file mode 100644 index 0000000000..eab538582d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/FullSegmentEncryptionKeyCache.java @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.LinkedHashMap; +import java.util.Map; + +/** + * LRU cache that holds up to {@code maxSize} full-segment-encryption keys. Which each addition, + * once the cache's size exceeds {@code maxSize}, the oldest item (according to insertion order) is + * removed. + */ +/* package */ final class FullSegmentEncryptionKeyCache { + + private final LinkedHashMap backingMap; + + public FullSegmentEncryptionKeyCache(int maxSize) { + backingMap = + new LinkedHashMap( + /* initialCapacity= */ maxSize + 1, /* loadFactor= */ 1, /* accessOrder= */ false) { + @Override + protected boolean removeEldestEntry(Map.Entry eldest) { + return size() > maxSize; + } + }; + } + + /** + * Returns the {@code encryptionKey} cached against this {@code uri}, or null if {@code uri} is + * null or not present in the cache. + */ + @Nullable + public byte[] get(@Nullable Uri uri) { + if (uri == null) { + return null; + } + return backingMap.get(uri); + } + + /** + * Inserts an entry into the cache. + * + * @throws NullPointerException if {@code uri} or {@code encryptionKey} are null. + */ + @Nullable + public byte[] put(Uri uri, byte[] encryptionKey) { + return backingMap.put(Assertions.checkNotNull(uri), Assertions.checkNotNull(encryptionKey)); + } + + /** + * Returns true if {@code uri} is present in the cache. + * + * @throws NullPointerException if {@code uri} is null. + */ + public boolean containsUri(Uri uri) { + return backingMap.containsKey(Assertions.checkNotNull(uri)); + } + + /** + * Removes {@code uri} from the cache. If {@code uri} was present in the cahce, this returns the + * corresponding {@code encryptionKey}, otherwise null. + * + * @throws NullPointerException if {@code uri} is null. + */ + @Nullable + public byte[] remove(Uri uri) { + return backingMap.remove(Assertions.checkNotNull(uri)); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsChunkSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsChunkSource.java new file mode 100644 index 0000000000..da935389d8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsChunkSource.java @@ -0,0 +1,668 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.net.Uri; +import android.os.SystemClock; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.BehindLiveWindowException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.BaseMediaChunkIterator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.Chunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.DataChunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunkIterator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist.Segment; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistTracker; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.BaseTrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.UriUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.Arrays; +import java.util.List; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** Source of Hls (possibly adaptive) chunks. */ +/* package */ class HlsChunkSource { + + /** + * Chunk holder that allows the scheduling of retries. + */ + public static final class HlsChunkHolder { + + public HlsChunkHolder() { + clear(); + } + + /** The chunk to be loaded next. */ + @Nullable public Chunk chunk; + + /** + * Indicates that the end of the stream has been reached. + */ + public boolean endOfStream; + + /** Indicates that the chunk source is waiting for the referred playlist to be refreshed. */ + @Nullable public Uri playlistUrl; + + /** + * Clears the holder. + */ + public void clear() { + chunk = null; + endOfStream = false; + playlistUrl = null; + } + + } + + /** + * The maximum number of keys that the key cache can hold. This value must be 2 or greater in + * order to hold initialization segment and media segment keys simultaneously. + */ + private static final int KEY_CACHE_SIZE = 4; + + private final HlsExtractorFactory extractorFactory; + private final DataSource mediaDataSource; + private final DataSource encryptionDataSource; + private final TimestampAdjusterProvider timestampAdjusterProvider; + private final Uri[] playlistUrls; + private final Format[] playlistFormats; + private final HlsPlaylistTracker playlistTracker; + private final TrackGroup trackGroup; + @Nullable private final List muxedCaptionFormats; + private final FullSegmentEncryptionKeyCache keyCache; + + private boolean isTimestampMaster; + private byte[] scratchSpace; + @Nullable private IOException fatalError; + @Nullable private Uri expectedPlaylistUrl; + private boolean independentSegments; + + // Note: The track group in the selection is typically *not* equal to trackGroup. This is due to + // the way in which HlsSampleStreamWrapper generates track groups. Use only index based methods + // in TrackSelection to avoid unexpected behavior. + private TrackSelection trackSelection; + private long liveEdgeInPeriodTimeUs; + private boolean seenExpectedPlaylistError; + + /** + * @param extractorFactory An {@link HlsExtractorFactory} from which to obtain the extractors for + * media chunks. + * @param playlistTracker The {@link HlsPlaylistTracker} from which to obtain media playlists. + * @param playlistUrls The {@link Uri}s of the media playlists that can be adapted between by this + * chunk source. + * @param playlistFormats The {@link Format Formats} corresponding to the media playlists. + * @param dataSourceFactory An {@link HlsDataSourceFactory} to create {@link DataSource}s for the + * chunks. + * @param mediaTransferListener The transfer listener which should be informed of any media data + * transfers. May be null if no listener is available. + * @param timestampAdjusterProvider A provider of {@link TimestampAdjuster} instances. If multiple + * {@link HlsChunkSource}s are used for a single playback, they should all share the same + * provider. + * @param muxedCaptionFormats List of muxed caption {@link Format}s. Null if no closed caption + * information is available in the master playlist. + */ + public HlsChunkSource( + HlsExtractorFactory extractorFactory, + HlsPlaylistTracker playlistTracker, + Uri[] playlistUrls, + Format[] playlistFormats, + HlsDataSourceFactory dataSourceFactory, + @Nullable TransferListener mediaTransferListener, + TimestampAdjusterProvider timestampAdjusterProvider, + @Nullable List muxedCaptionFormats) { + this.extractorFactory = extractorFactory; + this.playlistTracker = playlistTracker; + this.playlistUrls = playlistUrls; + this.playlistFormats = playlistFormats; + this.timestampAdjusterProvider = timestampAdjusterProvider; + this.muxedCaptionFormats = muxedCaptionFormats; + keyCache = new FullSegmentEncryptionKeyCache(KEY_CACHE_SIZE); + scratchSpace = Util.EMPTY_BYTE_ARRAY; + liveEdgeInPeriodTimeUs = C.TIME_UNSET; + mediaDataSource = dataSourceFactory.createDataSource(C.DATA_TYPE_MEDIA); + if (mediaTransferListener != null) { + mediaDataSource.addTransferListener(mediaTransferListener); + } + encryptionDataSource = dataSourceFactory.createDataSource(C.DATA_TYPE_DRM); + trackGroup = new TrackGroup(playlistFormats); + int[] initialTrackSelection = new int[playlistUrls.length]; + for (int i = 0; i < playlistUrls.length; i++) { + initialTrackSelection[i] = i; + } + trackSelection = new InitializationTrackSelection(trackGroup, initialTrackSelection); + } + + /** + * If the source is currently having difficulty providing chunks, then this method throws the + * underlying error. Otherwise does nothing. + * + * @throws IOException The underlying error. + */ + public void maybeThrowError() throws IOException { + if (fatalError != null) { + throw fatalError; + } + if (expectedPlaylistUrl != null && seenExpectedPlaylistError) { + playlistTracker.maybeThrowPlaylistRefreshError(expectedPlaylistUrl); + } + } + + /** + * Returns the track group exposed by the source. + */ + public TrackGroup getTrackGroup() { + return trackGroup; + } + + /** + * Sets the current track selection. + * + * @param trackSelection The {@link TrackSelection}. + */ + public void setTrackSelection(TrackSelection trackSelection) { + this.trackSelection = trackSelection; + } + + /** Returns the current {@link TrackSelection}. */ + public TrackSelection getTrackSelection() { + return trackSelection; + } + + /** + * Resets the source. + */ + public void reset() { + fatalError = null; + } + + /** + * Sets whether this chunk source is responsible for initializing timestamp adjusters. + * + * @param isTimestampMaster True if this chunk source is responsible for initializing timestamp + * adjusters. + */ + public void setIsTimestampMaster(boolean isTimestampMaster) { + this.isTimestampMaster = isTimestampMaster; + } + + /** + * Returns the next chunk to load. + * + *

If a chunk is available then {@link HlsChunkHolder#chunk} is set. If the end of the stream + * has been reached then {@link HlsChunkHolder#endOfStream} is set. If a chunk is not available + * but the end of the stream has not been reached, {@link HlsChunkHolder#playlistUrl} is set to + * contain the {@link Uri} that refers to the playlist that needs refreshing. + * + * @param playbackPositionUs The current playback position relative to the period start in + * microseconds. If playback of the period to which this chunk source belongs has not yet + * started, the value will be the starting position in the period minus the duration of any + * media in previous periods still to be played. + * @param loadPositionUs The current load position relative to the period start in microseconds. + * @param queue The queue of buffered {@link HlsMediaChunk}s. + * @param allowEndOfStream Whether {@link HlsChunkHolder#endOfStream} is allowed to be set for + * non-empty media playlists. If {@code false}, the last available chunk is returned instead. + * If the media playlist is empty, {@link HlsChunkHolder#endOfStream} is always set. + * @param out A holder to populate. + */ + public void getNextChunk( + long playbackPositionUs, + long loadPositionUs, + List queue, + boolean allowEndOfStream, + HlsChunkHolder out) { + HlsMediaChunk previous = queue.isEmpty() ? null : queue.get(queue.size() - 1); + int oldTrackIndex = previous == null ? C.INDEX_UNSET : trackGroup.indexOf(previous.trackFormat); + long bufferedDurationUs = loadPositionUs - playbackPositionUs; + long timeToLiveEdgeUs = resolveTimeToLiveEdgeUs(playbackPositionUs); + if (previous != null && !independentSegments) { + // Unless segments are known to be independent, switching tracks requires downloading + // overlapping segments. Hence we subtract the previous segment's duration from the buffered + // duration. + // This may affect the live-streaming adaptive track selection logic, when we compare the + // buffered duration to time-to-live-edge to decide whether to switch. Therefore, we subtract + // the duration of the last loaded segment from timeToLiveEdgeUs as well. + long subtractedDurationUs = previous.getDurationUs(); + bufferedDurationUs = Math.max(0, bufferedDurationUs - subtractedDurationUs); + if (timeToLiveEdgeUs != C.TIME_UNSET) { + timeToLiveEdgeUs = Math.max(0, timeToLiveEdgeUs - subtractedDurationUs); + } + } + + // Select the track. + MediaChunkIterator[] mediaChunkIterators = createMediaChunkIterators(previous, loadPositionUs); + trackSelection.updateSelectedTrack( + playbackPositionUs, bufferedDurationUs, timeToLiveEdgeUs, queue, mediaChunkIterators); + int selectedTrackIndex = trackSelection.getSelectedIndexInTrackGroup(); + + boolean switchingTrack = oldTrackIndex != selectedTrackIndex; + Uri selectedPlaylistUrl = playlistUrls[selectedTrackIndex]; + if (!playlistTracker.isSnapshotValid(selectedPlaylistUrl)) { + out.playlistUrl = selectedPlaylistUrl; + seenExpectedPlaylistError &= selectedPlaylistUrl.equals(expectedPlaylistUrl); + expectedPlaylistUrl = selectedPlaylistUrl; + // Retry when playlist is refreshed. + return; + } + HlsMediaPlaylist mediaPlaylist = + playlistTracker.getPlaylistSnapshot(selectedPlaylistUrl, /* isForPlayback= */ true); + // playlistTracker snapshot is valid (checked by if() above), so mediaPlaylist must be non-null. + Assertions.checkNotNull(mediaPlaylist); + independentSegments = mediaPlaylist.hasIndependentSegments; + + updateLiveEdgeTimeUs(mediaPlaylist); + + // Select the chunk. + long startOfPlaylistInPeriodUs = + mediaPlaylist.startTimeUs - playlistTracker.getInitialStartTimeUs(); + long chunkMediaSequence = + getChunkMediaSequence( + previous, switchingTrack, mediaPlaylist, startOfPlaylistInPeriodUs, loadPositionUs); + if (chunkMediaSequence < mediaPlaylist.mediaSequence && previous != null && switchingTrack) { + // We try getting the next chunk without adapting in case that's the reason for falling + // behind the live window. + selectedTrackIndex = oldTrackIndex; + selectedPlaylistUrl = playlistUrls[selectedTrackIndex]; + mediaPlaylist = + playlistTracker.getPlaylistSnapshot(selectedPlaylistUrl, /* isForPlayback= */ true); + // playlistTracker snapshot is valid (checked by if() above), so mediaPlaylist must be + // non-null. + Assertions.checkNotNull(mediaPlaylist); + startOfPlaylistInPeriodUs = + mediaPlaylist.startTimeUs - playlistTracker.getInitialStartTimeUs(); + chunkMediaSequence = previous.getNextChunkIndex(); + } + + if (chunkMediaSequence < mediaPlaylist.mediaSequence) { + fatalError = new BehindLiveWindowException(); + return; + } + + int segmentIndexInPlaylist = (int) (chunkMediaSequence - mediaPlaylist.mediaSequence); + int availableSegmentCount = mediaPlaylist.segments.size(); + if (segmentIndexInPlaylist >= availableSegmentCount) { + if (mediaPlaylist.hasEndTag) { + if (allowEndOfStream || availableSegmentCount == 0) { + out.endOfStream = true; + return; + } + segmentIndexInPlaylist = availableSegmentCount - 1; + } else /* Live */ { + out.playlistUrl = selectedPlaylistUrl; + seenExpectedPlaylistError &= selectedPlaylistUrl.equals(expectedPlaylistUrl); + expectedPlaylistUrl = selectedPlaylistUrl; + return; + } + } + // We have a valid playlist snapshot, we can discard any playlist errors at this point. + seenExpectedPlaylistError = false; + expectedPlaylistUrl = null; + + // Handle encryption. + HlsMediaPlaylist.Segment segment = mediaPlaylist.segments.get(segmentIndexInPlaylist); + + // Check if the segment or its initialization segment are fully encrypted. + Uri initSegmentKeyUri = getFullEncryptionKeyUri(mediaPlaylist, segment.initializationSegment); + out.chunk = maybeCreateEncryptionChunkFor(initSegmentKeyUri, selectedTrackIndex); + if (out.chunk != null) { + return; + } + Uri mediaSegmentKeyUri = getFullEncryptionKeyUri(mediaPlaylist, segment); + out.chunk = maybeCreateEncryptionChunkFor(mediaSegmentKeyUri, selectedTrackIndex); + if (out.chunk != null) { + return; + } + + out.chunk = + HlsMediaChunk.createInstance( + extractorFactory, + mediaDataSource, + playlistFormats[selectedTrackIndex], + startOfPlaylistInPeriodUs, + mediaPlaylist, + segmentIndexInPlaylist, + selectedPlaylistUrl, + muxedCaptionFormats, + trackSelection.getSelectionReason(), + trackSelection.getSelectionData(), + isTimestampMaster, + timestampAdjusterProvider, + previous, + /* mediaSegmentKey= */ keyCache.get(mediaSegmentKeyUri), + /* initSegmentKey= */ keyCache.get(initSegmentKeyUri)); + } + + /** + * Called when the {@link HlsSampleStreamWrapper} has finished loading a chunk obtained from this + * source. + * + * @param chunk The chunk whose load has been completed. + */ + public void onChunkLoadCompleted(Chunk chunk) { + if (chunk instanceof EncryptionKeyChunk) { + EncryptionKeyChunk encryptionKeyChunk = (EncryptionKeyChunk) chunk; + scratchSpace = encryptionKeyChunk.getDataHolder(); + keyCache.put( + encryptionKeyChunk.dataSpec.uri, Assertions.checkNotNull(encryptionKeyChunk.getResult())); + } + } + + /** + * Attempts to blacklist the track associated with the given chunk. Blacklisting will fail if the + * track is the only non-blacklisted track in the selection. + * + * @param chunk The chunk whose load caused the blacklisting attempt. + * @param blacklistDurationMs The number of milliseconds for which the track selection should be + * blacklisted. + * @return Whether the blacklisting succeeded. + */ + public boolean maybeBlacklistTrack(Chunk chunk, long blacklistDurationMs) { + return trackSelection.blacklist( + trackSelection.indexOf(trackGroup.indexOf(chunk.trackFormat)), blacklistDurationMs); + } + + /** + * Called when a playlist load encounters an error. + * + * @param playlistUrl The {@link Uri} of the playlist whose load encountered an error. + * @param blacklistDurationMs The duration for which the playlist should be blacklisted. Or {@link + * C#TIME_UNSET} if the playlist should not be blacklisted. + * @return True if blacklisting did not encounter errors. False otherwise. + */ + public boolean onPlaylistError(Uri playlistUrl, long blacklistDurationMs) { + int trackGroupIndex = C.INDEX_UNSET; + for (int i = 0; i < playlistUrls.length; i++) { + if (playlistUrls[i].equals(playlistUrl)) { + trackGroupIndex = i; + break; + } + } + if (trackGroupIndex == C.INDEX_UNSET) { + return true; + } + int trackSelectionIndex = trackSelection.indexOf(trackGroupIndex); + if (trackSelectionIndex == C.INDEX_UNSET) { + return true; + } + seenExpectedPlaylistError |= playlistUrl.equals(expectedPlaylistUrl); + return blacklistDurationMs == C.TIME_UNSET + || trackSelection.blacklist(trackSelectionIndex, blacklistDurationMs); + } + + /** + * Returns an array of {@link MediaChunkIterator}s for upcoming media chunks. + * + * @param previous The previous media chunk. May be null. + * @param loadPositionUs The position at which the iterators will start. + * @return Array of {@link MediaChunkIterator}s for each track. + */ + public MediaChunkIterator[] createMediaChunkIterators( + @Nullable HlsMediaChunk previous, long loadPositionUs) { + int oldTrackIndex = previous == null ? C.INDEX_UNSET : trackGroup.indexOf(previous.trackFormat); + MediaChunkIterator[] chunkIterators = new MediaChunkIterator[trackSelection.length()]; + for (int i = 0; i < chunkIterators.length; i++) { + int trackIndex = trackSelection.getIndexInTrackGroup(i); + Uri playlistUrl = playlistUrls[trackIndex]; + if (!playlistTracker.isSnapshotValid(playlistUrl)) { + chunkIterators[i] = MediaChunkIterator.EMPTY; + continue; + } + HlsMediaPlaylist playlist = + playlistTracker.getPlaylistSnapshot(playlistUrl, /* isForPlayback= */ false); + // Playlist snapshot is valid (checked by if() above) so playlist must be non-null. + Assertions.checkNotNull(playlist); + long startOfPlaylistInPeriodUs = + playlist.startTimeUs - playlistTracker.getInitialStartTimeUs(); + boolean switchingTrack = trackIndex != oldTrackIndex; + long chunkMediaSequence = + getChunkMediaSequence( + previous, switchingTrack, playlist, startOfPlaylistInPeriodUs, loadPositionUs); + if (chunkMediaSequence < playlist.mediaSequence) { + chunkIterators[i] = MediaChunkIterator.EMPTY; + continue; + } + int chunkIndex = (int) (chunkMediaSequence - playlist.mediaSequence); + chunkIterators[i] = + new HlsMediaPlaylistSegmentIterator(playlist, startOfPlaylistInPeriodUs, chunkIndex); + } + return chunkIterators; + } + + // Private methods. + + /** + * Returns the media sequence number of the segment to load next in {@code mediaPlaylist}. + * + * @param previous The last (at least partially) loaded segment. + * @param switchingTrack Whether the segment to load is not preceded by a segment in the same + * track. + * @param mediaPlaylist The media playlist to which the segment to load belongs. + * @param startOfPlaylistInPeriodUs The start of {@code mediaPlaylist} relative to the period + * start in microseconds. + * @param loadPositionUs The current load position relative to the period start in microseconds. + * @return The media sequence of the segment to load. + */ + private long getChunkMediaSequence( + @Nullable HlsMediaChunk previous, + boolean switchingTrack, + HlsMediaPlaylist mediaPlaylist, + long startOfPlaylistInPeriodUs, + long loadPositionUs) { + if (previous == null || switchingTrack) { + long endOfPlaylistInPeriodUs = startOfPlaylistInPeriodUs + mediaPlaylist.durationUs; + long targetPositionInPeriodUs = + (previous == null || independentSegments) ? loadPositionUs : previous.startTimeUs; + if (!mediaPlaylist.hasEndTag && targetPositionInPeriodUs >= endOfPlaylistInPeriodUs) { + // If the playlist is too old to contain the chunk, we need to refresh it. + return mediaPlaylist.mediaSequence + mediaPlaylist.segments.size(); + } + long targetPositionInPlaylistUs = targetPositionInPeriodUs - startOfPlaylistInPeriodUs; + return Util.binarySearchFloor( + mediaPlaylist.segments, + /* value= */ targetPositionInPlaylistUs, + /* inclusive= */ true, + /* stayInBounds= */ !playlistTracker.isLive() || previous == null) + + mediaPlaylist.mediaSequence; + } + // We ignore the case of previous not having loaded completely, in which case we load the next + // segment. + return previous.getNextChunkIndex(); + } + + private long resolveTimeToLiveEdgeUs(long playbackPositionUs) { + final boolean resolveTimeToLiveEdgePossible = liveEdgeInPeriodTimeUs != C.TIME_UNSET; + return resolveTimeToLiveEdgePossible + ? liveEdgeInPeriodTimeUs - playbackPositionUs + : C.TIME_UNSET; + } + + private void updateLiveEdgeTimeUs(HlsMediaPlaylist mediaPlaylist) { + liveEdgeInPeriodTimeUs = + mediaPlaylist.hasEndTag + ? C.TIME_UNSET + : (mediaPlaylist.getEndTimeUs() - playlistTracker.getInitialStartTimeUs()); + } + + @Nullable + private Chunk maybeCreateEncryptionChunkFor(@Nullable Uri keyUri, int selectedTrackIndex) { + if (keyUri == null) { + return null; + } + + byte[] encryptionKey = keyCache.remove(keyUri); + if (encryptionKey != null) { + // The key was present in the key cache. We re-insert it to prevent it from being evicted by + // the following key addition. Note that removal of the key is necessary to affect the + // eviction order. + keyCache.put(keyUri, encryptionKey); + return null; + } + DataSpec dataSpec = new DataSpec(keyUri, 0, C.LENGTH_UNSET, null, DataSpec.FLAG_ALLOW_GZIP); + return new EncryptionKeyChunk( + encryptionDataSource, + dataSpec, + playlistFormats[selectedTrackIndex], + trackSelection.getSelectionReason(), + trackSelection.getSelectionData(), + scratchSpace); + } + + @Nullable + private static Uri getFullEncryptionKeyUri(HlsMediaPlaylist playlist, @Nullable Segment segment) { + if (segment == null || segment.fullSegmentEncryptionKeyUri == null) { + return null; + } + return UriUtil.resolveToUri(playlist.baseUri, segment.fullSegmentEncryptionKeyUri); + } + + // Private classes. + + /** + * A {@link TrackSelection} to use for initialization. + */ + private static final class InitializationTrackSelection extends BaseTrackSelection { + + private int selectedIndex; + + public InitializationTrackSelection(TrackGroup group, int[] tracks) { + super(group, tracks); + selectedIndex = indexOf(group.getFormat(0)); + } + + @Override + public void updateSelectedTrack( + long playbackPositionUs, + long bufferedDurationUs, + long availableDurationUs, + List queue, + MediaChunkIterator[] mediaChunkIterators) { + long nowMs = SystemClock.elapsedRealtime(); + if (!isBlacklisted(selectedIndex, nowMs)) { + return; + } + // Try from lowest bitrate to highest. + for (int i = length - 1; i >= 0; i--) { + if (!isBlacklisted(i, nowMs)) { + selectedIndex = i; + return; + } + } + // Should never happen. + throw new IllegalStateException(); + } + + @Override + public int getSelectedIndex() { + return selectedIndex; + } + + @Override + public int getSelectionReason() { + return C.SELECTION_REASON_UNKNOWN; + } + + @Override + @Nullable + public Object getSelectionData() { + return null; + } + + } + + private static final class EncryptionKeyChunk extends DataChunk { + + private byte @MonotonicNonNull [] result; + + public EncryptionKeyChunk( + DataSource dataSource, + DataSpec dataSpec, + Format trackFormat, + int trackSelectionReason, + @Nullable Object trackSelectionData, + byte[] scratchSpace) { + super(dataSource, dataSpec, C.DATA_TYPE_DRM, trackFormat, trackSelectionReason, + trackSelectionData, scratchSpace); + } + + @Override + protected void consume(byte[] data, int limit) { + result = Arrays.copyOf(data, limit); + } + + /** Return the result of this chunk, or null if loading is not complete. */ + @Nullable + public byte[] getResult() { + return result; + } + + } + + /** {@link MediaChunkIterator} wrapping a {@link HlsMediaPlaylist}. */ + private static final class HlsMediaPlaylistSegmentIterator extends BaseMediaChunkIterator { + + private final HlsMediaPlaylist playlist; + private final long startOfPlaylistInPeriodUs; + + /** + * Creates iterator. + * + * @param playlist The {@link HlsMediaPlaylist} to wrap. + * @param startOfPlaylistInPeriodUs The start time of the playlist in the period, in + * microseconds. + * @param chunkIndex The index of the first available chunk in the playlist. + */ + public HlsMediaPlaylistSegmentIterator( + HlsMediaPlaylist playlist, long startOfPlaylistInPeriodUs, int chunkIndex) { + super(/* fromIndex= */ chunkIndex, /* toIndex= */ playlist.segments.size() - 1); + this.playlist = playlist; + this.startOfPlaylistInPeriodUs = startOfPlaylistInPeriodUs; + } + + @Override + public DataSpec getDataSpec() { + checkInBounds(); + Segment segment = playlist.segments.get((int) getCurrentIndex()); + Uri chunkUri = UriUtil.resolveToUri(playlist.baseUri, segment.url); + return new DataSpec( + chunkUri, segment.byterangeOffset, segment.byterangeLength, /* key= */ null); + } + + @Override + public long getChunkStartTimeUs() { + checkInBounds(); + Segment segment = playlist.segments.get((int) getCurrentIndex()); + return startOfPlaylistInPeriodUs + segment.relativeStartTimeUs; + } + + @Override + public long getChunkEndTimeUs() { + checkInBounds(); + Segment segment = playlist.segments.get((int) getCurrentIndex()); + long segmentStartTimeInPeriodUs = startOfPlaylistInPeriodUs + segment.relativeStartTimeUs; + return segmentStartTimeInPeriodUs + segment.durationUs; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsDataSourceFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsDataSourceFactory.java new file mode 100644 index 0000000000..66fac54b8d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsDataSourceFactory.java @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; + +/** + * Creates {@link DataSource}s for HLS playlists, encryption and media chunks. + */ +public interface HlsDataSourceFactory { + + /** + * Creates a {@link DataSource} for the given data type. + * + * @param dataType The data type for which the {@link DataSource} will be used. One of {@link C} + * {@code .DATA_TYPE_*} constants. + * @return A {@link DataSource} for the given data type. + */ + DataSource createDataSource(int dataType); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsExtractorFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsExtractorFactory.java new file mode 100644 index 0000000000..8f445f97ed --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsExtractorFactory.java @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import java.io.IOException; +import java.util.List; +import java.util.Map; + +/** + * Factory for HLS media chunk extractors. + */ +public interface HlsExtractorFactory { + + /** Holds an {@link Extractor} and associated parameters. */ + final class Result { + + /** The created extractor; */ + public final Extractor extractor; + /** Whether the segments for which {@link #extractor} is created are packed audio segments. */ + public final boolean isPackedAudioExtractor; + /** + * Whether {@link #extractor} may be reused for following continuous (no immediately preceding + * discontinuities) segments of the same variant. + */ + public final boolean isReusable; + + /** + * Creates a result. + * + * @param extractor See {@link #extractor}. + * @param isPackedAudioExtractor See {@link #isPackedAudioExtractor}. + * @param isReusable See {@link #isReusable}. + */ + public Result(Extractor extractor, boolean isPackedAudioExtractor, boolean isReusable) { + this.extractor = extractor; + this.isPackedAudioExtractor = isPackedAudioExtractor; + this.isReusable = isReusable; + } + } + + HlsExtractorFactory DEFAULT = new DefaultHlsExtractorFactory(); + + /** + * Creates an {@link Extractor} for extracting HLS media chunks. + * + * @param previousExtractor A previously used {@link Extractor} which can be reused if the current + * chunk is a continuation of the previously extracted chunk, or null otherwise. It is the + * responsibility of implementers to only reuse extractors that are suited for reusage. + * @param uri The URI of the media chunk. + * @param format A {@link Format} associated with the chunk to extract. + * @param muxedCaptionFormats List of muxed caption {@link Format}s. Null if no closed caption + * information is available in the master playlist. + * @param timestampAdjuster Adjuster corresponding to the provided discontinuity sequence number. + * @param responseHeaders The HTTP response headers associated with the media segment or + * initialization section to extract. + * @param sniffingExtractorInput The first extractor input that will be passed to the returned + * extractor's {@link Extractor#read(ExtractorInput, PositionHolder)}. Must only be used to + * call {@link Extractor#sniff(ExtractorInput)}. + * @return A {@link Result}. + * @throws InterruptedException If the thread is interrupted while sniffing. + * @throws IOException If an I/O error is encountered while sniffing. + */ + Result createExtractor( + @Nullable Extractor previousExtractor, + Uri uri, + Format format, + @Nullable List muxedCaptionFormats, + TimestampAdjuster timestampAdjuster, + Map> responseHeaders, + ExtractorInput sniffingExtractorInput) + throws InterruptedException, IOException; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsManifest.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsManifest.java new file mode 100644 index 0000000000..52a5632134 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsManifest.java @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMasterPlaylist; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist; + +/** + * Holds a master playlist along with a snapshot of one of its media playlists. + */ +public final class HlsManifest { + + /** + * The master playlist of an HLS stream. + */ + public final HlsMasterPlaylist masterPlaylist; + /** + * A snapshot of a media playlist referred to by {@link #masterPlaylist}. + */ + public final HlsMediaPlaylist mediaPlaylist; + + /** + * @param masterPlaylist The master playlist. + * @param mediaPlaylist The media playlist. + */ + HlsManifest(HlsMasterPlaylist masterPlaylist, HlsMediaPlaylist mediaPlaylist) { + this.masterPlaylist = masterPlaylist; + this.mediaPlaylist = mediaPlaylist; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsMediaChunk.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsMediaChunk.java new file mode 100644 index 0000000000..173e53faad --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsMediaChunk.java @@ -0,0 +1,519 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DefaultExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.Id3Decoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.PrivFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.UriUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.EOFException; +import java.io.IOException; +import java.math.BigInteger; +import java.util.List; +import java.util.concurrent.atomic.AtomicInteger; +import org.checkerframework.checker.nullness.qual.EnsuresNonNull; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; +import org.checkerframework.checker.nullness.qual.RequiresNonNull; + +/** + * An HLS {@link MediaChunk}. + */ +/* package */ final class HlsMediaChunk extends MediaChunk { + + /** + * Creates a new instance. + * + * @param extractorFactory A {@link HlsExtractorFactory} from which the HLS media chunk extractor + * is obtained. + * @param dataSource The source from which the data should be loaded. + * @param format The chunk format. + * @param startOfPlaylistInPeriodUs The position of the playlist in the period in microseconds. + * @param mediaPlaylist The media playlist from which this chunk was obtained. + * @param playlistUrl The url of the playlist from which this chunk was obtained. + * @param muxedCaptionFormats List of muxed caption {@link Format}s. Null if no closed caption + * information is available in the master playlist. + * @param trackSelectionReason See {@link #trackSelectionReason}. + * @param trackSelectionData See {@link #trackSelectionData}. + * @param isMasterTimestampSource True if the chunk can initialize the timestamp adjuster. + * @param timestampAdjusterProvider The provider from which to obtain the {@link + * TimestampAdjuster}. + * @param previousChunk The {@link HlsMediaChunk} that preceded this one. May be null. + * @param mediaSegmentKey The media segment decryption key, if fully encrypted. Null otherwise. + * @param initSegmentKey The initialization segment decryption key, if fully encrypted. Null + * otherwise. + */ + public static HlsMediaChunk createInstance( + HlsExtractorFactory extractorFactory, + DataSource dataSource, + Format format, + long startOfPlaylistInPeriodUs, + HlsMediaPlaylist mediaPlaylist, + int segmentIndexInPlaylist, + Uri playlistUrl, + @Nullable List muxedCaptionFormats, + int trackSelectionReason, + @Nullable Object trackSelectionData, + boolean isMasterTimestampSource, + TimestampAdjusterProvider timestampAdjusterProvider, + @Nullable HlsMediaChunk previousChunk, + @Nullable byte[] mediaSegmentKey, + @Nullable byte[] initSegmentKey) { + // Media segment. + HlsMediaPlaylist.Segment mediaSegment = mediaPlaylist.segments.get(segmentIndexInPlaylist); + DataSpec dataSpec = + new DataSpec( + UriUtil.resolveToUri(mediaPlaylist.baseUri, mediaSegment.url), + mediaSegment.byterangeOffset, + mediaSegment.byterangeLength, + /* key= */ null); + boolean mediaSegmentEncrypted = mediaSegmentKey != null; + byte[] mediaSegmentIv = + mediaSegmentEncrypted + ? getEncryptionIvArray(Assertions.checkNotNull(mediaSegment.encryptionIV)) + : null; + DataSource mediaDataSource = buildDataSource(dataSource, mediaSegmentKey, mediaSegmentIv); + + // Init segment. + HlsMediaPlaylist.Segment initSegment = mediaSegment.initializationSegment; + DataSpec initDataSpec = null; + boolean initSegmentEncrypted = false; + DataSource initDataSource = null; + if (initSegment != null) { + initSegmentEncrypted = initSegmentKey != null; + byte[] initSegmentIv = + initSegmentEncrypted + ? getEncryptionIvArray(Assertions.checkNotNull(initSegment.encryptionIV)) + : null; + Uri initSegmentUri = UriUtil.resolveToUri(mediaPlaylist.baseUri, initSegment.url); + initDataSpec = + new DataSpec( + initSegmentUri, + initSegment.byterangeOffset, + initSegment.byterangeLength, + /* key= */ null); + initDataSource = buildDataSource(dataSource, initSegmentKey, initSegmentIv); + } + + long segmentStartTimeInPeriodUs = startOfPlaylistInPeriodUs + mediaSegment.relativeStartTimeUs; + long segmentEndTimeInPeriodUs = segmentStartTimeInPeriodUs + mediaSegment.durationUs; + int discontinuitySequenceNumber = + mediaPlaylist.discontinuitySequence + mediaSegment.relativeDiscontinuitySequence; + + Extractor previousExtractor = null; + Id3Decoder id3Decoder; + ParsableByteArray scratchId3Data; + boolean shouldSpliceIn; + if (previousChunk != null) { + id3Decoder = previousChunk.id3Decoder; + scratchId3Data = previousChunk.scratchId3Data; + shouldSpliceIn = + !playlistUrl.equals(previousChunk.playlistUrl) || !previousChunk.loadCompleted; + previousExtractor = + previousChunk.isExtractorReusable + && previousChunk.discontinuitySequenceNumber == discontinuitySequenceNumber + && !shouldSpliceIn + ? previousChunk.extractor + : null; + } else { + id3Decoder = new Id3Decoder(); + scratchId3Data = new ParsableByteArray(Id3Decoder.ID3_HEADER_LENGTH); + shouldSpliceIn = false; + } + + return new HlsMediaChunk( + extractorFactory, + mediaDataSource, + dataSpec, + format, + mediaSegmentEncrypted, + initDataSource, + initDataSpec, + initSegmentEncrypted, + playlistUrl, + muxedCaptionFormats, + trackSelectionReason, + trackSelectionData, + segmentStartTimeInPeriodUs, + segmentEndTimeInPeriodUs, + /* chunkMediaSequence= */ mediaPlaylist.mediaSequence + segmentIndexInPlaylist, + discontinuitySequenceNumber, + mediaSegment.hasGapTag, + isMasterTimestampSource, + /* timestampAdjuster= */ timestampAdjusterProvider.getAdjuster(discontinuitySequenceNumber), + mediaSegment.drmInitData, + previousExtractor, + id3Decoder, + scratchId3Data, + shouldSpliceIn); + } + + public static final String PRIV_TIMESTAMP_FRAME_OWNER = + "com.apple.streaming.transportStreamTimestamp"; + private static final PositionHolder DUMMY_POSITION_HOLDER = new PositionHolder(); + + private static final AtomicInteger uidSource = new AtomicInteger(); + + /** + * A unique identifier for the chunk. + */ + public final int uid; + + /** + * The discontinuity sequence number of the chunk. + */ + public final int discontinuitySequenceNumber; + + /** The url of the playlist from which this chunk was obtained. */ + public final Uri playlistUrl; + + @Nullable private final DataSource initDataSource; + @Nullable private final DataSpec initDataSpec; + @Nullable private final Extractor previousExtractor; + + private final boolean isMasterTimestampSource; + private final boolean hasGapTag; + private final TimestampAdjuster timestampAdjuster; + private final boolean shouldSpliceIn; + private final HlsExtractorFactory extractorFactory; + @Nullable private final List muxedCaptionFormats; + @Nullable private final DrmInitData drmInitData; + private final Id3Decoder id3Decoder; + private final ParsableByteArray scratchId3Data; + private final boolean mediaSegmentEncrypted; + private final boolean initSegmentEncrypted; + + @MonotonicNonNull private Extractor extractor; + private boolean isExtractorReusable; + @MonotonicNonNull private HlsSampleStreamWrapper output; + // nextLoadPosition refers to the init segment if initDataLoadRequired is true. + // Otherwise, nextLoadPosition refers to the media segment. + private int nextLoadPosition; + private boolean initDataLoadRequired; + private volatile boolean loadCanceled; + private boolean loadCompleted; + + private HlsMediaChunk( + HlsExtractorFactory extractorFactory, + DataSource mediaDataSource, + DataSpec dataSpec, + Format format, + boolean mediaSegmentEncrypted, + @Nullable DataSource initDataSource, + @Nullable DataSpec initDataSpec, + boolean initSegmentEncrypted, + Uri playlistUrl, + @Nullable List muxedCaptionFormats, + int trackSelectionReason, + @Nullable Object trackSelectionData, + long startTimeUs, + long endTimeUs, + long chunkMediaSequence, + int discontinuitySequenceNumber, + boolean hasGapTag, + boolean isMasterTimestampSource, + TimestampAdjuster timestampAdjuster, + @Nullable DrmInitData drmInitData, + @Nullable Extractor previousExtractor, + Id3Decoder id3Decoder, + ParsableByteArray scratchId3Data, + boolean shouldSpliceIn) { + super( + mediaDataSource, + dataSpec, + format, + trackSelectionReason, + trackSelectionData, + startTimeUs, + endTimeUs, + chunkMediaSequence); + this.mediaSegmentEncrypted = mediaSegmentEncrypted; + this.discontinuitySequenceNumber = discontinuitySequenceNumber; + this.initDataSpec = initDataSpec; + this.initDataSource = initDataSource; + this.initDataLoadRequired = initDataSpec != null; + this.initSegmentEncrypted = initSegmentEncrypted; + this.playlistUrl = playlistUrl; + this.isMasterTimestampSource = isMasterTimestampSource; + this.timestampAdjuster = timestampAdjuster; + this.hasGapTag = hasGapTag; + this.extractorFactory = extractorFactory; + this.muxedCaptionFormats = muxedCaptionFormats; + this.drmInitData = drmInitData; + this.previousExtractor = previousExtractor; + this.id3Decoder = id3Decoder; + this.scratchId3Data = scratchId3Data; + this.shouldSpliceIn = shouldSpliceIn; + uid = uidSource.getAndIncrement(); + } + + /** + * Initializes the chunk for loading, setting the {@link HlsSampleStreamWrapper} that will receive + * samples as they are loaded. + * + * @param output The output that will receive the loaded samples. + */ + public void init(HlsSampleStreamWrapper output) { + this.output = output; + output.init(uid, shouldSpliceIn); + } + + @Override + public boolean isLoadCompleted() { + return loadCompleted; + } + + // Loadable implementation + + @Override + public void cancelLoad() { + loadCanceled = true; + } + + @Override + public void load() throws IOException, InterruptedException { + // output == null means init() hasn't been called. + Assertions.checkNotNull(output); + if (extractor == null && previousExtractor != null) { + extractor = previousExtractor; + isExtractorReusable = true; + initDataLoadRequired = false; + } + maybeLoadInitData(); + if (!loadCanceled) { + if (!hasGapTag) { + loadMedia(); + } + loadCompleted = true; + } + } + + // Internal methods. + + @RequiresNonNull("output") + private void maybeLoadInitData() throws IOException, InterruptedException { + if (!initDataLoadRequired) { + return; + } + // initDataLoadRequired => initDataSource != null && initDataSpec != null + Assertions.checkNotNull(initDataSource); + Assertions.checkNotNull(initDataSpec); + feedDataToExtractor(initDataSource, initDataSpec, initSegmentEncrypted); + nextLoadPosition = 0; + initDataLoadRequired = false; + } + + @RequiresNonNull("output") + private void loadMedia() throws IOException, InterruptedException { + if (!isMasterTimestampSource) { + timestampAdjuster.waitUntilInitialized(); + } else if (timestampAdjuster.getFirstSampleTimestampUs() == TimestampAdjuster.DO_NOT_OFFSET) { + // We're the master and we haven't set the desired first sample timestamp yet. + timestampAdjuster.setFirstSampleTimestampUs(startTimeUs); + } + feedDataToExtractor(dataSource, dataSpec, mediaSegmentEncrypted); + } + + /** + * Attempts to feed the given {@code dataSpec} to {@code this.extractor}. Whenever the operation + * concludes (because of a thrown exception or because the operation finishes), the number of fed + * bytes is written to {@code nextLoadPosition}. + */ + @RequiresNonNull("output") + private void feedDataToExtractor( + DataSource dataSource, DataSpec dataSpec, boolean dataIsEncrypted) + throws IOException, InterruptedException { + // If we previously fed part of this chunk to the extractor, we need to skip it this time. For + // encrypted content we need to skip the data by reading it through the source, so as to ensure + // correct decryption of the remainder of the chunk. For clear content, we can request the + // remainder of the chunk directly. + DataSpec loadDataSpec; + boolean skipLoadedBytes; + if (dataIsEncrypted) { + loadDataSpec = dataSpec; + skipLoadedBytes = nextLoadPosition != 0; + } else { + loadDataSpec = dataSpec.subrange(nextLoadPosition); + skipLoadedBytes = false; + } + try { + ExtractorInput input = prepareExtraction(dataSource, loadDataSpec); + if (skipLoadedBytes) { + input.skipFully(nextLoadPosition); + } + try { + int result = Extractor.RESULT_CONTINUE; + while (result == Extractor.RESULT_CONTINUE && !loadCanceled) { + result = extractor.read(input, DUMMY_POSITION_HOLDER); + } + } finally { + nextLoadPosition = (int) (input.getPosition() - dataSpec.absoluteStreamPosition); + } + } finally { + Util.closeQuietly(dataSource); + } + } + + @RequiresNonNull("output") + @EnsuresNonNull("extractor") + private DefaultExtractorInput prepareExtraction(DataSource dataSource, DataSpec dataSpec) + throws IOException, InterruptedException { + long bytesToRead = dataSource.open(dataSpec); + DefaultExtractorInput extractorInput = + new DefaultExtractorInput(dataSource, dataSpec.absoluteStreamPosition, bytesToRead); + + if (extractor == null) { + long id3Timestamp = peekId3PrivTimestamp(extractorInput); + extractorInput.resetPeekPosition(); + + HlsExtractorFactory.Result result = + extractorFactory.createExtractor( + previousExtractor, + dataSpec.uri, + trackFormat, + muxedCaptionFormats, + timestampAdjuster, + dataSource.getResponseHeaders(), + extractorInput); + extractor = result.extractor; + isExtractorReusable = result.isReusable; + if (result.isPackedAudioExtractor) { + output.setSampleOffsetUs( + id3Timestamp != C.TIME_UNSET + ? timestampAdjuster.adjustTsTimestamp(id3Timestamp) + : startTimeUs); + } else { + // In case the container format changes mid-stream to non-packed-audio, we need to reset + // the timestamp offset. + output.setSampleOffsetUs(/* sampleOffsetUs= */ 0L); + } + output.onNewExtractor(); + extractor.init(output); + } + output.setDrmInitData(drmInitData); + return extractorInput; + } + + /** + * Peek the presentation timestamp of the first sample in the chunk from an ID3 PRIV as defined + * in the HLS spec, version 20, Section 3.4. Returns {@link C#TIME_UNSET} if the frame is not + * found. This method only modifies the peek position. + * + * @param input The {@link ExtractorInput} to obtain the PRIV frame from. + * @return The parsed, adjusted timestamp in microseconds + * @throws IOException If an error occurred peeking from the input. + * @throws InterruptedException If the thread was interrupted. + */ + private long peekId3PrivTimestamp(ExtractorInput input) throws IOException, InterruptedException { + input.resetPeekPosition(); + try { + input.peekFully(scratchId3Data.data, 0, Id3Decoder.ID3_HEADER_LENGTH); + } catch (EOFException e) { + // The input isn't long enough for there to be any ID3 data. + return C.TIME_UNSET; + } + scratchId3Data.reset(Id3Decoder.ID3_HEADER_LENGTH); + int id = scratchId3Data.readUnsignedInt24(); + if (id != Id3Decoder.ID3_TAG) { + return C.TIME_UNSET; + } + scratchId3Data.skipBytes(3); // version(2), flags(1). + int id3Size = scratchId3Data.readSynchSafeInt(); + int requiredCapacity = id3Size + Id3Decoder.ID3_HEADER_LENGTH; + if (requiredCapacity > scratchId3Data.capacity()) { + byte[] data = scratchId3Data.data; + scratchId3Data.reset(requiredCapacity); + System.arraycopy(data, 0, scratchId3Data.data, 0, Id3Decoder.ID3_HEADER_LENGTH); + } + input.peekFully(scratchId3Data.data, Id3Decoder.ID3_HEADER_LENGTH, id3Size); + Metadata metadata = id3Decoder.decode(scratchId3Data.data, id3Size); + if (metadata == null) { + return C.TIME_UNSET; + } + int metadataLength = metadata.length(); + for (int i = 0; i < metadataLength; i++) { + Metadata.Entry frame = metadata.get(i); + if (frame instanceof PrivFrame) { + PrivFrame privFrame = (PrivFrame) frame; + if (PRIV_TIMESTAMP_FRAME_OWNER.equals(privFrame.owner)) { + System.arraycopy( + privFrame.privateData, 0, scratchId3Data.data, 0, 8 /* timestamp size */); + scratchId3Data.reset(8); + // The top 31 bits should be zeros, but explicitly zero them to wrap in the case that the + // streaming provider forgot. See: https://github.com/google/ExoPlayer/pull/3495. + return scratchId3Data.readLong() & 0x1FFFFFFFFL; + } + } + } + return C.TIME_UNSET; + } + + // Internal methods. + + private static byte[] getEncryptionIvArray(String ivString) { + String trimmedIv; + if (Util.toLowerInvariant(ivString).startsWith("0x")) { + trimmedIv = ivString.substring(2); + } else { + trimmedIv = ivString; + } + + byte[] ivData = new BigInteger(trimmedIv, /* radix= */ 16).toByteArray(); + byte[] ivDataWithPadding = new byte[16]; + int offset = ivData.length > 16 ? ivData.length - 16 : 0; + System.arraycopy( + ivData, + offset, + ivDataWithPadding, + ivDataWithPadding.length - ivData.length + offset, + ivData.length - offset); + return ivDataWithPadding; + } + + /** + * If the segment is fully encrypted, returns an {@link Aes128DataSource} that wraps the original + * in order to decrypt the loaded data. Else returns the original. + * + *

{@code fullSegmentEncryptionKey} & {@code encryptionIv} can either both be null, or neither. + */ + private static DataSource buildDataSource( + DataSource dataSource, + @Nullable byte[] fullSegmentEncryptionKey, + @Nullable byte[] encryptionIv) { + if (fullSegmentEncryptionKey != null) { + Assertions.checkNotNull(encryptionIv); + return new Aes128DataSource(dataSource, fullSegmentEncryptionKey, encryptionIv); + } + return dataSource; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsMediaPeriod.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsMediaPeriod.java new file mode 100644 index 0000000000..60aa5298c3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsMediaPeriod.java @@ -0,0 +1,858 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.net.Uri; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.StreamKey; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.CompositeSequenceableLoaderFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SequenceableLoader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMasterPlaylist; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMasterPlaylist.Rendition; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMasterPlaylist.Variant; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistTracker; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.IdentityHashMap; +import java.util.List; +import java.util.Map; +import org.checkerframework.checker.nullness.compatqual.NullableType; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * A {@link MediaPeriod} that loads an HLS stream. + */ +public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper.Callback, + HlsPlaylistTracker.PlaylistEventListener { + + private final HlsExtractorFactory extractorFactory; + private final HlsPlaylistTracker playlistTracker; + private final HlsDataSourceFactory dataSourceFactory; + @Nullable private final TransferListener mediaTransferListener; + private final DrmSessionManager drmSessionManager; + private final LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private final EventDispatcher eventDispatcher; + private final Allocator allocator; + private final IdentityHashMap streamWrapperIndices; + private final TimestampAdjusterProvider timestampAdjusterProvider; + private final CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory; + private final boolean allowChunklessPreparation; + private final @HlsMediaSource.MetadataType int metadataType; + private final boolean useSessionKeys; + + @Nullable private Callback callback; + private int pendingPrepareCount; + private @MonotonicNonNull TrackGroupArray trackGroups; + private HlsSampleStreamWrapper[] sampleStreamWrappers; + private HlsSampleStreamWrapper[] enabledSampleStreamWrappers; + // Maps sample stream wrappers to variant/rendition index by matching array positions. + private int[][] manifestUrlIndicesPerWrapper; + private SequenceableLoader compositeSequenceableLoader; + private boolean notifiedReadingStarted; + + /** + * Creates an HLS media period. + * + * @param extractorFactory An {@link HlsExtractorFactory} for {@link Extractor}s for the segments. + * @param playlistTracker A tracker for HLS playlists. + * @param dataSourceFactory An {@link HlsDataSourceFactory} for {@link DataSource}s for segments + * and keys. + * @param mediaTransferListener The transfer listener to inform of any media data transfers. May + * be null if no listener is available. + * @param drmSessionManager The {@link DrmSessionManager} to acquire {@link DrmSession + * DrmSessions} with. + * @param loadErrorHandlingPolicy A {@link LoadErrorHandlingPolicy}. + * @param eventDispatcher A dispatcher to notify of events. + * @param allocator An {@link Allocator} from which to obtain media buffer allocations. + * @param compositeSequenceableLoaderFactory A factory to create composite {@link + * SequenceableLoader}s for when this media source loads data from multiple streams. + * @param allowChunklessPreparation Whether chunkless preparation is allowed. + * @param useSessionKeys Whether to use #EXT-X-SESSION-KEY tags. + */ + public HlsMediaPeriod( + HlsExtractorFactory extractorFactory, + HlsPlaylistTracker playlistTracker, + HlsDataSourceFactory dataSourceFactory, + @Nullable TransferListener mediaTransferListener, + DrmSessionManager drmSessionManager, + LoadErrorHandlingPolicy loadErrorHandlingPolicy, + EventDispatcher eventDispatcher, + Allocator allocator, + CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory, + boolean allowChunklessPreparation, + @HlsMediaSource.MetadataType int metadataType, + boolean useSessionKeys) { + this.extractorFactory = extractorFactory; + this.playlistTracker = playlistTracker; + this.dataSourceFactory = dataSourceFactory; + this.mediaTransferListener = mediaTransferListener; + this.drmSessionManager = drmSessionManager; + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + this.eventDispatcher = eventDispatcher; + this.allocator = allocator; + this.compositeSequenceableLoaderFactory = compositeSequenceableLoaderFactory; + this.allowChunklessPreparation = allowChunklessPreparation; + this.metadataType = metadataType; + this.useSessionKeys = useSessionKeys; + compositeSequenceableLoader = + compositeSequenceableLoaderFactory.createCompositeSequenceableLoader(); + streamWrapperIndices = new IdentityHashMap<>(); + timestampAdjusterProvider = new TimestampAdjusterProvider(); + sampleStreamWrappers = new HlsSampleStreamWrapper[0]; + enabledSampleStreamWrappers = new HlsSampleStreamWrapper[0]; + manifestUrlIndicesPerWrapper = new int[0][]; + eventDispatcher.mediaPeriodCreated(); + } + + public void release() { + playlistTracker.removeListener(this); + for (HlsSampleStreamWrapper sampleStreamWrapper : sampleStreamWrappers) { + sampleStreamWrapper.release(); + } + callback = null; + eventDispatcher.mediaPeriodReleased(); + } + + @Override + public void prepare(Callback callback, long positionUs) { + this.callback = callback; + playlistTracker.addListener(this); + buildAndPrepareSampleStreamWrappers(positionUs); + } + + @Override + public void maybeThrowPrepareError() throws IOException { + for (HlsSampleStreamWrapper sampleStreamWrapper : sampleStreamWrappers) { + sampleStreamWrapper.maybeThrowPrepareError(); + } + } + + @Override + public TrackGroupArray getTrackGroups() { + // trackGroups will only be null if period hasn't been prepared or has been released. + return Assertions.checkNotNull(trackGroups); + } + + // TODO: When the master playlist does not de-duplicate variants by URL and allows Renditions with + // null URLs, this method must be updated to calculate stream keys that are compatible with those + // that may already be persisted for offline. + @Override + public List getStreamKeys(List trackSelections) { + // See HlsMasterPlaylist.copy for interpretation of StreamKeys. + HlsMasterPlaylist masterPlaylist = Assertions.checkNotNull(playlistTracker.getMasterPlaylist()); + boolean hasVariants = !masterPlaylist.variants.isEmpty(); + int audioWrapperOffset = hasVariants ? 1 : 0; + // Subtitle sample stream wrappers are held last. + int subtitleWrapperOffset = sampleStreamWrappers.length - masterPlaylist.subtitles.size(); + + TrackGroupArray mainWrapperTrackGroups; + int mainWrapperPrimaryGroupIndex; + int[] mainWrapperVariantIndices; + if (hasVariants) { + HlsSampleStreamWrapper mainWrapper = sampleStreamWrappers[0]; + mainWrapperVariantIndices = manifestUrlIndicesPerWrapper[0]; + mainWrapperTrackGroups = mainWrapper.getTrackGroups(); + mainWrapperPrimaryGroupIndex = mainWrapper.getPrimaryTrackGroupIndex(); + } else { + mainWrapperVariantIndices = new int[0]; + mainWrapperTrackGroups = TrackGroupArray.EMPTY; + mainWrapperPrimaryGroupIndex = 0; + } + + List streamKeys = new ArrayList<>(); + boolean needsPrimaryTrackGroupSelection = false; + boolean hasPrimaryTrackGroupSelection = false; + for (TrackSelection trackSelection : trackSelections) { + TrackGroup trackSelectionGroup = trackSelection.getTrackGroup(); + int mainWrapperTrackGroupIndex = mainWrapperTrackGroups.indexOf(trackSelectionGroup); + if (mainWrapperTrackGroupIndex != C.INDEX_UNSET) { + if (mainWrapperTrackGroupIndex == mainWrapperPrimaryGroupIndex) { + // Primary group in main wrapper. + hasPrimaryTrackGroupSelection = true; + for (int i = 0; i < trackSelection.length(); i++) { + int variantIndex = mainWrapperVariantIndices[trackSelection.getIndexInTrackGroup(i)]; + streamKeys.add(new StreamKey(HlsMasterPlaylist.GROUP_INDEX_VARIANT, variantIndex)); + } + } else { + // Embedded group in main wrapper. + needsPrimaryTrackGroupSelection = true; + } + } else { + // Audio or subtitle group. + for (int i = audioWrapperOffset; i < sampleStreamWrappers.length; i++) { + TrackGroupArray wrapperTrackGroups = sampleStreamWrappers[i].getTrackGroups(); + int selectedTrackGroupIndex = wrapperTrackGroups.indexOf(trackSelectionGroup); + if (selectedTrackGroupIndex != C.INDEX_UNSET) { + int groupIndexType = + i < subtitleWrapperOffset + ? HlsMasterPlaylist.GROUP_INDEX_AUDIO + : HlsMasterPlaylist.GROUP_INDEX_SUBTITLE; + int[] selectedWrapperUrlIndices = manifestUrlIndicesPerWrapper[i]; + for (int trackIndex = 0; trackIndex < trackSelection.length(); trackIndex++) { + int renditionIndex = + selectedWrapperUrlIndices[trackSelection.getIndexInTrackGroup(trackIndex)]; + streamKeys.add(new StreamKey(groupIndexType, renditionIndex)); + } + break; + } + } + } + } + if (needsPrimaryTrackGroupSelection && !hasPrimaryTrackGroupSelection) { + // A track selection includes a variant-embedded track, but no variant is added yet. We use + // the valid variant with the lowest bitrate to reduce overhead. + int lowestBitrateIndex = mainWrapperVariantIndices[0]; + int lowestBitrate = masterPlaylist.variants.get(mainWrapperVariantIndices[0]).format.bitrate; + for (int i = 1; i < mainWrapperVariantIndices.length; i++) { + int variantBitrate = + masterPlaylist.variants.get(mainWrapperVariantIndices[i]).format.bitrate; + if (variantBitrate < lowestBitrate) { + lowestBitrate = variantBitrate; + lowestBitrateIndex = mainWrapperVariantIndices[i]; + } + } + streamKeys.add(new StreamKey(HlsMasterPlaylist.GROUP_INDEX_VARIANT, lowestBitrateIndex)); + } + return streamKeys; + } + + @Override + public long selectTracks( + @NullableType TrackSelection[] selections, + boolean[] mayRetainStreamFlags, + @NullableType SampleStream[] streams, + boolean[] streamResetFlags, + long positionUs) { + // Map each selection and stream onto a child period index. + int[] streamChildIndices = new int[selections.length]; + int[] selectionChildIndices = new int[selections.length]; + for (int i = 0; i < selections.length; i++) { + streamChildIndices[i] = streams[i] == null ? C.INDEX_UNSET + : streamWrapperIndices.get(streams[i]); + selectionChildIndices[i] = C.INDEX_UNSET; + if (selections[i] != null) { + TrackGroup trackGroup = selections[i].getTrackGroup(); + for (int j = 0; j < sampleStreamWrappers.length; j++) { + if (sampleStreamWrappers[j].getTrackGroups().indexOf(trackGroup) != C.INDEX_UNSET) { + selectionChildIndices[i] = j; + break; + } + } + } + } + + boolean forceReset = false; + streamWrapperIndices.clear(); + // Select tracks for each child, copying the resulting streams back into a new streams array. + SampleStream[] newStreams = new SampleStream[selections.length]; + @NullableType SampleStream[] childStreams = new SampleStream[selections.length]; + @NullableType TrackSelection[] childSelections = new TrackSelection[selections.length]; + int newEnabledSampleStreamWrapperCount = 0; + HlsSampleStreamWrapper[] newEnabledSampleStreamWrappers = + new HlsSampleStreamWrapper[sampleStreamWrappers.length]; + for (int i = 0; i < sampleStreamWrappers.length; i++) { + for (int j = 0; j < selections.length; j++) { + childStreams[j] = streamChildIndices[j] == i ? streams[j] : null; + childSelections[j] = selectionChildIndices[j] == i ? selections[j] : null; + } + HlsSampleStreamWrapper sampleStreamWrapper = sampleStreamWrappers[i]; + boolean wasReset = sampleStreamWrapper.selectTracks(childSelections, mayRetainStreamFlags, + childStreams, streamResetFlags, positionUs, forceReset); + boolean wrapperEnabled = false; + for (int j = 0; j < selections.length; j++) { + SampleStream childStream = childStreams[j]; + if (selectionChildIndices[j] == i) { + // Assert that the child provided a stream for the selection. + Assertions.checkNotNull(childStream); + newStreams[j] = childStream; + wrapperEnabled = true; + streamWrapperIndices.put(childStream, i); + } else if (streamChildIndices[j] == i) { + // Assert that the child cleared any previous stream. + Assertions.checkState(childStream == null); + } + } + if (wrapperEnabled) { + newEnabledSampleStreamWrappers[newEnabledSampleStreamWrapperCount] = sampleStreamWrapper; + if (newEnabledSampleStreamWrapperCount++ == 0) { + // The first enabled wrapper is responsible for initializing timestamp adjusters. This + // way, if enabled, variants are responsible. Else audio renditions. Else text renditions. + sampleStreamWrapper.setIsTimestampMaster(true); + if (wasReset || enabledSampleStreamWrappers.length == 0 + || sampleStreamWrapper != enabledSampleStreamWrappers[0]) { + // The wrapper responsible for initializing the timestamp adjusters was reset or + // changed. We need to reset the timestamp adjuster provider and all other wrappers. + timestampAdjusterProvider.reset(); + forceReset = true; + } + } else { + sampleStreamWrapper.setIsTimestampMaster(false); + } + } + } + // Copy the new streams back into the streams array. + System.arraycopy(newStreams, 0, streams, 0, newStreams.length); + // Update the local state. + enabledSampleStreamWrappers = + Util.nullSafeArrayCopy(newEnabledSampleStreamWrappers, newEnabledSampleStreamWrapperCount); + compositeSequenceableLoader = + compositeSequenceableLoaderFactory.createCompositeSequenceableLoader( + enabledSampleStreamWrappers); + return positionUs; + } + + @Override + public void discardBuffer(long positionUs, boolean toKeyframe) { + for (HlsSampleStreamWrapper sampleStreamWrapper : enabledSampleStreamWrappers) { + sampleStreamWrapper.discardBuffer(positionUs, toKeyframe); + } + } + + @Override + public void reevaluateBuffer(long positionUs) { + compositeSequenceableLoader.reevaluateBuffer(positionUs); + } + + @Override + public boolean continueLoading(long positionUs) { + if (trackGroups == null) { + // Preparation is still going on. + for (HlsSampleStreamWrapper wrapper : sampleStreamWrappers) { + wrapper.continuePreparing(); + } + return false; + } else { + return compositeSequenceableLoader.continueLoading(positionUs); + } + } + + @Override + public boolean isLoading() { + return compositeSequenceableLoader.isLoading(); + } + + @Override + public long getNextLoadPositionUs() { + return compositeSequenceableLoader.getNextLoadPositionUs(); + } + + @Override + public long readDiscontinuity() { + if (!notifiedReadingStarted) { + eventDispatcher.readingStarted(); + notifiedReadingStarted = true; + } + return C.TIME_UNSET; + } + + @Override + public long getBufferedPositionUs() { + return compositeSequenceableLoader.getBufferedPositionUs(); + } + + @Override + public long seekToUs(long positionUs) { + if (enabledSampleStreamWrappers.length > 0) { + // We need to reset all wrappers if the one responsible for initializing timestamp adjusters + // is reset. Else each wrapper can decide whether to reset independently. + boolean forceReset = enabledSampleStreamWrappers[0].seekToUs(positionUs, false); + for (int i = 1; i < enabledSampleStreamWrappers.length; i++) { + enabledSampleStreamWrappers[i].seekToUs(positionUs, forceReset); + } + if (forceReset) { + timestampAdjusterProvider.reset(); + } + } + return positionUs; + } + + @Override + public long getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters) { + return positionUs; + } + + // HlsSampleStreamWrapper.Callback implementation. + + @Override + public void onPrepared() { + if (--pendingPrepareCount > 0) { + return; + } + + int totalTrackGroupCount = 0; + for (HlsSampleStreamWrapper sampleStreamWrapper : sampleStreamWrappers) { + totalTrackGroupCount += sampleStreamWrapper.getTrackGroups().length; + } + TrackGroup[] trackGroupArray = new TrackGroup[totalTrackGroupCount]; + int trackGroupIndex = 0; + for (HlsSampleStreamWrapper sampleStreamWrapper : sampleStreamWrappers) { + int wrapperTrackGroupCount = sampleStreamWrapper.getTrackGroups().length; + for (int j = 0; j < wrapperTrackGroupCount; j++) { + trackGroupArray[trackGroupIndex++] = sampleStreamWrapper.getTrackGroups().get(j); + } + } + trackGroups = new TrackGroupArray(trackGroupArray); + callback.onPrepared(this); + } + + @Override + public void onPlaylistRefreshRequired(Uri url) { + playlistTracker.refreshPlaylist(url); + } + + @Override + public void onContinueLoadingRequested(HlsSampleStreamWrapper sampleStreamWrapper) { + callback.onContinueLoadingRequested(this); + } + + // PlaylistListener implementation. + + @Override + public void onPlaylistChanged() { + callback.onContinueLoadingRequested(this); + } + + @Override + public boolean onPlaylistError(Uri url, long blacklistDurationMs) { + boolean noBlacklistingFailure = true; + for (HlsSampleStreamWrapper streamWrapper : sampleStreamWrappers) { + noBlacklistingFailure &= streamWrapper.onPlaylistError(url, blacklistDurationMs); + } + callback.onContinueLoadingRequested(this); + return noBlacklistingFailure; + } + + // Internal methods. + + private void buildAndPrepareSampleStreamWrappers(long positionUs) { + HlsMasterPlaylist masterPlaylist = Assertions.checkNotNull(playlistTracker.getMasterPlaylist()); + Map overridingDrmInitData = + useSessionKeys + ? deriveOverridingDrmInitData(masterPlaylist.sessionKeyDrmInitData) + : Collections.emptyMap(); + + boolean hasVariants = !masterPlaylist.variants.isEmpty(); + List audioRenditions = masterPlaylist.audios; + List subtitleRenditions = masterPlaylist.subtitles; + + pendingPrepareCount = 0; + ArrayList sampleStreamWrappers = new ArrayList<>(); + ArrayList manifestUrlIndicesPerWrapper = new ArrayList<>(); + + if (hasVariants) { + buildAndPrepareMainSampleStreamWrapper( + masterPlaylist, + positionUs, + sampleStreamWrappers, + manifestUrlIndicesPerWrapper, + overridingDrmInitData); + } + + // TODO: Build video stream wrappers here. + + buildAndPrepareAudioSampleStreamWrappers( + positionUs, + audioRenditions, + sampleStreamWrappers, + manifestUrlIndicesPerWrapper, + overridingDrmInitData); + + // Subtitle stream wrappers. We can always use master playlist information to prepare these. + for (int i = 0; i < subtitleRenditions.size(); i++) { + Rendition subtitleRendition = subtitleRenditions.get(i); + HlsSampleStreamWrapper sampleStreamWrapper = + buildSampleStreamWrapper( + C.TRACK_TYPE_TEXT, + new Uri[] {subtitleRendition.url}, + new Format[] {subtitleRendition.format}, + null, + Collections.emptyList(), + overridingDrmInitData, + positionUs); + manifestUrlIndicesPerWrapper.add(new int[] {i}); + sampleStreamWrappers.add(sampleStreamWrapper); + sampleStreamWrapper.prepareWithMasterPlaylistInfo( + new TrackGroup[] {new TrackGroup(subtitleRendition.format)}, + /* primaryTrackGroupIndex= */ 0); + } + + this.sampleStreamWrappers = sampleStreamWrappers.toArray(new HlsSampleStreamWrapper[0]); + this.manifestUrlIndicesPerWrapper = manifestUrlIndicesPerWrapper.toArray(new int[0][]); + pendingPrepareCount = this.sampleStreamWrappers.length; + // Set timestamp master and trigger preparation (if not already prepared) + this.sampleStreamWrappers[0].setIsTimestampMaster(true); + for (HlsSampleStreamWrapper sampleStreamWrapper : this.sampleStreamWrappers) { + sampleStreamWrapper.continuePreparing(); + } + // All wrappers are enabled during preparation. + enabledSampleStreamWrappers = this.sampleStreamWrappers; + } + + /** + * This method creates and starts preparation of the main {@link HlsSampleStreamWrapper}. + * + *

The main sample stream wrapper is the first element of {@link #sampleStreamWrappers}. It + * provides {@link SampleStream}s for the variant urls in the master playlist. It may be adaptive + * and may contain multiple muxed tracks. + * + *

If chunkless preparation is allowed, the media period will try preparation without segment + * downloads. This is only possible if variants contain the CODECS attribute. If not, traditional + * preparation with segment downloads will take place. The following points apply to chunkless + * preparation: + * + *

    + *
  • A muxed audio track will be exposed if the codecs list contain an audio entry and the + * master playlist either contains an EXT-X-MEDIA tag without the URI attribute or does not + * contain any EXT-X-MEDIA tag. + *
  • Closed captions will only be exposed if they are declared by the master playlist. + *
  • An ID3 track is exposed preemptively, in case the segments contain an ID3 track. + *
+ * + * @param masterPlaylist The HLS master playlist. + * @param positionUs If preparation requires any chunk downloads, the position in microseconds at + * which downloading should start. Ignored otherwise. + * @param sampleStreamWrappers List to which the built main sample stream wrapper should be added. + * @param manifestUrlIndicesPerWrapper List to which the selected variant indices should be added. + * @param overridingDrmInitData Overriding {@link DrmInitData}, keyed by protection scheme type + * (i.e. {@link DrmInitData#schemeType}). + */ + private void buildAndPrepareMainSampleStreamWrapper( + HlsMasterPlaylist masterPlaylist, + long positionUs, + List sampleStreamWrappers, + List manifestUrlIndicesPerWrapper, + Map overridingDrmInitData) { + int[] variantTypes = new int[masterPlaylist.variants.size()]; + int videoVariantCount = 0; + int audioVariantCount = 0; + for (int i = 0; i < masterPlaylist.variants.size(); i++) { + Variant variant = masterPlaylist.variants.get(i); + Format format = variant.format; + if (format.height > 0 || Util.getCodecsOfType(format.codecs, C.TRACK_TYPE_VIDEO) != null) { + variantTypes[i] = C.TRACK_TYPE_VIDEO; + videoVariantCount++; + } else if (Util.getCodecsOfType(format.codecs, C.TRACK_TYPE_AUDIO) != null) { + variantTypes[i] = C.TRACK_TYPE_AUDIO; + audioVariantCount++; + } else { + variantTypes[i] = C.TRACK_TYPE_UNKNOWN; + } + } + boolean useVideoVariantsOnly = false; + boolean useNonAudioVariantsOnly = false; + int selectedVariantsCount = variantTypes.length; + if (videoVariantCount > 0) { + // We've identified some variants as definitely containing video. Assume variants within the + // master playlist are marked consistently, and hence that we have the full set. Filter out + // any other variants, which are likely to be audio only. + useVideoVariantsOnly = true; + selectedVariantsCount = videoVariantCount; + } else if (audioVariantCount < variantTypes.length) { + // We've identified some variants, but not all, as being audio only. Filter them out to leave + // the remaining variants, which are likely to contain video. + useNonAudioVariantsOnly = true; + selectedVariantsCount = variantTypes.length - audioVariantCount; + } + Uri[] selectedPlaylistUrls = new Uri[selectedVariantsCount]; + Format[] selectedPlaylistFormats = new Format[selectedVariantsCount]; + int[] selectedVariantIndices = new int[selectedVariantsCount]; + int outIndex = 0; + for (int i = 0; i < masterPlaylist.variants.size(); i++) { + if ((!useVideoVariantsOnly || variantTypes[i] == C.TRACK_TYPE_VIDEO) + && (!useNonAudioVariantsOnly || variantTypes[i] != C.TRACK_TYPE_AUDIO)) { + Variant variant = masterPlaylist.variants.get(i); + selectedPlaylistUrls[outIndex] = variant.url; + selectedPlaylistFormats[outIndex] = variant.format; + selectedVariantIndices[outIndex++] = i; + } + } + String codecs = selectedPlaylistFormats[0].codecs; + HlsSampleStreamWrapper sampleStreamWrapper = + buildSampleStreamWrapper( + C.TRACK_TYPE_DEFAULT, + selectedPlaylistUrls, + selectedPlaylistFormats, + masterPlaylist.muxedAudioFormat, + masterPlaylist.muxedCaptionFormats, + overridingDrmInitData, + positionUs); + sampleStreamWrappers.add(sampleStreamWrapper); + manifestUrlIndicesPerWrapper.add(selectedVariantIndices); + if (allowChunklessPreparation && codecs != null) { + boolean variantsContainVideoCodecs = Util.getCodecsOfType(codecs, C.TRACK_TYPE_VIDEO) != null; + boolean variantsContainAudioCodecs = Util.getCodecsOfType(codecs, C.TRACK_TYPE_AUDIO) != null; + List muxedTrackGroups = new ArrayList<>(); + if (variantsContainVideoCodecs) { + Format[] videoFormats = new Format[selectedVariantsCount]; + for (int i = 0; i < videoFormats.length; i++) { + videoFormats[i] = deriveVideoFormat(selectedPlaylistFormats[i]); + } + muxedTrackGroups.add(new TrackGroup(videoFormats)); + + if (variantsContainAudioCodecs + && (masterPlaylist.muxedAudioFormat != null || masterPlaylist.audios.isEmpty())) { + muxedTrackGroups.add( + new TrackGroup( + deriveAudioFormat( + selectedPlaylistFormats[0], + masterPlaylist.muxedAudioFormat, + /* isPrimaryTrackInVariant= */ false))); + } + List ccFormats = masterPlaylist.muxedCaptionFormats; + if (ccFormats != null) { + for (int i = 0; i < ccFormats.size(); i++) { + muxedTrackGroups.add(new TrackGroup(ccFormats.get(i))); + } + } + } else if (variantsContainAudioCodecs) { + // Variants only contain audio. + Format[] audioFormats = new Format[selectedVariantsCount]; + for (int i = 0; i < audioFormats.length; i++) { + audioFormats[i] = + deriveAudioFormat( + /* variantFormat= */ selectedPlaylistFormats[i], + masterPlaylist.muxedAudioFormat, + /* isPrimaryTrackInVariant= */ true); + } + muxedTrackGroups.add(new TrackGroup(audioFormats)); + } else { + // Variants contain codecs but no video or audio entries could be identified. + throw new IllegalArgumentException("Unexpected codecs attribute: " + codecs); + } + + TrackGroup id3TrackGroup = + new TrackGroup( + Format.createSampleFormat( + /* id= */ "ID3", + MimeTypes.APPLICATION_ID3, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + /* drmInitData= */ null)); + muxedTrackGroups.add(id3TrackGroup); + + sampleStreamWrapper.prepareWithMasterPlaylistInfo( + muxedTrackGroups.toArray(new TrackGroup[0]), + /* primaryTrackGroupIndex= */ 0, + /* optionalTrackGroupsIndices= */ muxedTrackGroups.indexOf(id3TrackGroup)); + } + } + + private void buildAndPrepareAudioSampleStreamWrappers( + long positionUs, + List audioRenditions, + List sampleStreamWrappers, + List manifestUrlsIndicesPerWrapper, + Map overridingDrmInitData) { + ArrayList scratchPlaylistUrls = + new ArrayList<>(/* initialCapacity= */ audioRenditions.size()); + ArrayList scratchPlaylistFormats = + new ArrayList<>(/* initialCapacity= */ audioRenditions.size()); + ArrayList scratchIndicesList = + new ArrayList<>(/* initialCapacity= */ audioRenditions.size()); + HashSet alreadyGroupedNames = new HashSet<>(); + for (int renditionByNameIndex = 0; + renditionByNameIndex < audioRenditions.size(); + renditionByNameIndex++) { + String name = audioRenditions.get(renditionByNameIndex).name; + if (!alreadyGroupedNames.add(name)) { + // This name already has a corresponding group. + continue; + } + + boolean renditionsHaveCodecs = true; + scratchPlaylistUrls.clear(); + scratchPlaylistFormats.clear(); + scratchIndicesList.clear(); + // Group all renditions with matching name. + for (int renditionIndex = 0; renditionIndex < audioRenditions.size(); renditionIndex++) { + if (Util.areEqual(name, audioRenditions.get(renditionIndex).name)) { + Rendition rendition = audioRenditions.get(renditionIndex); + scratchIndicesList.add(renditionIndex); + scratchPlaylistUrls.add(rendition.url); + scratchPlaylistFormats.add(rendition.format); + renditionsHaveCodecs &= rendition.format.codecs != null; + } + } + + HlsSampleStreamWrapper sampleStreamWrapper = + buildSampleStreamWrapper( + C.TRACK_TYPE_AUDIO, + scratchPlaylistUrls.toArray(Util.castNonNullTypeArray(new Uri[0])), + scratchPlaylistFormats.toArray(new Format[0]), + /* muxedAudioFormat= */ null, + /* muxedCaptionFormats= */ Collections.emptyList(), + overridingDrmInitData, + positionUs); + manifestUrlsIndicesPerWrapper.add(Util.toArray(scratchIndicesList)); + sampleStreamWrappers.add(sampleStreamWrapper); + + if (allowChunklessPreparation && renditionsHaveCodecs) { + Format[] renditionFormats = scratchPlaylistFormats.toArray(new Format[0]); + sampleStreamWrapper.prepareWithMasterPlaylistInfo( + new TrackGroup[] {new TrackGroup(renditionFormats)}, /* primaryTrackGroupIndex= */ 0); + } + } + } + + private HlsSampleStreamWrapper buildSampleStreamWrapper( + int trackType, + Uri[] playlistUrls, + Format[] playlistFormats, + @Nullable Format muxedAudioFormat, + @Nullable List muxedCaptionFormats, + Map overridingDrmInitData, + long positionUs) { + HlsChunkSource defaultChunkSource = + new HlsChunkSource( + extractorFactory, + playlistTracker, + playlistUrls, + playlistFormats, + dataSourceFactory, + mediaTransferListener, + timestampAdjusterProvider, + muxedCaptionFormats); + return new HlsSampleStreamWrapper( + trackType, + /* callback= */ this, + defaultChunkSource, + overridingDrmInitData, + allocator, + positionUs, + muxedAudioFormat, + drmSessionManager, + loadErrorHandlingPolicy, + eventDispatcher, + metadataType); + } + + private static Map deriveOverridingDrmInitData( + List sessionKeyDrmInitData) { + ArrayList mutableSessionKeyDrmInitData = new ArrayList<>(sessionKeyDrmInitData); + HashMap drmInitDataBySchemeType = new HashMap<>(); + for (int i = 0; i < mutableSessionKeyDrmInitData.size(); i++) { + DrmInitData drmInitData = sessionKeyDrmInitData.get(i); + String scheme = drmInitData.schemeType; + // Merge any subsequent drmInitData instances that have the same scheme type. This is valid + // due to the assumptions documented on HlsMediaSource.Builder.setUseSessionKeys, and is + // necessary to get data for different CDNs (e.g. Widevine and PlayReady) into a single + // drmInitData. + int j = i + 1; + while (j < mutableSessionKeyDrmInitData.size()) { + DrmInitData nextDrmInitData = mutableSessionKeyDrmInitData.get(j); + if (TextUtils.equals(nextDrmInitData.schemeType, scheme)) { + drmInitData = drmInitData.merge(nextDrmInitData); + mutableSessionKeyDrmInitData.remove(j); + } else { + j++; + } + } + drmInitDataBySchemeType.put(scheme, drmInitData); + } + return drmInitDataBySchemeType; + } + + private static Format deriveVideoFormat(Format variantFormat) { + String codecs = Util.getCodecsOfType(variantFormat.codecs, C.TRACK_TYPE_VIDEO); + String sampleMimeType = MimeTypes.getMediaMimeType(codecs); + return Format.createVideoContainerFormat( + variantFormat.id, + variantFormat.label, + variantFormat.containerMimeType, + sampleMimeType, + codecs, + variantFormat.metadata, + variantFormat.bitrate, + variantFormat.width, + variantFormat.height, + variantFormat.frameRate, + /* initializationData= */ null, + variantFormat.selectionFlags, + variantFormat.roleFlags); + } + + private static Format deriveAudioFormat( + Format variantFormat, @Nullable Format mediaTagFormat, boolean isPrimaryTrackInVariant) { + String codecs; + Metadata metadata; + int channelCount = Format.NO_VALUE; + int selectionFlags = 0; + int roleFlags = 0; + String language = null; + String label = null; + if (mediaTagFormat != null) { + codecs = mediaTagFormat.codecs; + metadata = mediaTagFormat.metadata; + channelCount = mediaTagFormat.channelCount; + selectionFlags = mediaTagFormat.selectionFlags; + roleFlags = mediaTagFormat.roleFlags; + language = mediaTagFormat.language; + label = mediaTagFormat.label; + } else { + codecs = Util.getCodecsOfType(variantFormat.codecs, C.TRACK_TYPE_AUDIO); + metadata = variantFormat.metadata; + if (isPrimaryTrackInVariant) { + channelCount = variantFormat.channelCount; + selectionFlags = variantFormat.selectionFlags; + roleFlags = variantFormat.roleFlags; + language = variantFormat.language; + label = variantFormat.label; + } + } + String sampleMimeType = MimeTypes.getMediaMimeType(codecs); + int bitrate = isPrimaryTrackInVariant ? variantFormat.bitrate : Format.NO_VALUE; + return Format.createAudioContainerFormat( + variantFormat.id, + label, + variantFormat.containerMimeType, + sampleMimeType, + codecs, + metadata, + bitrate, + channelCount, + /* sampleRate= */ Format.NO_VALUE, + /* initializationData= */ null, + selectionFlags, + roleFlags, + language); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsMediaSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsMediaSource.java new file mode 100644 index 0000000000..2fa49e13f0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsMediaSource.java @@ -0,0 +1,528 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import static java.lang.annotation.RetentionPolicy.SOURCE; + +import android.net.Uri; +import android.os.Handler; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayerLibraryInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.StreamKey; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.BaseMediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.CompositeSequenceableLoaderFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.DefaultCompositeSequenceableLoaderFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaPeriod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SequenceableLoader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SinglePeriodTimeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.DefaultHlsPlaylistParserFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.DefaultHlsPlaylistTracker; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.FilteringHlsPlaylistParserFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistParserFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistTracker; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultLoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.util.List; + +/** An HLS {@link MediaSource}. */ +public final class HlsMediaSource extends BaseMediaSource + implements HlsPlaylistTracker.PrimaryPlaylistListener { + + static { + ExoPlayerLibraryInfo.registerModule("goog.exo.hls"); + } + + /** + * The types of metadata that can be extracted from HLS streams. + * + *

Allowed values: + * + *

    + *
  • {@link #METADATA_TYPE_ID3} + *
  • {@link #METADATA_TYPE_EMSG} + *
+ * + *

See {@link Factory#setMetadataType(int)}. + */ + @Documented + @Retention(SOURCE) + @IntDef({METADATA_TYPE_ID3, METADATA_TYPE_EMSG}) + public @interface MetadataType {} + + /** Type for ID3 metadata in HLS streams. */ + public static final int METADATA_TYPE_ID3 = 1; + /** Type for ESMG metadata in HLS streams. */ + public static final int METADATA_TYPE_EMSG = 3; + + /** Factory for {@link HlsMediaSource}s. */ + public static final class Factory implements MediaSourceFactory { + + private final HlsDataSourceFactory hlsDataSourceFactory; + + private HlsExtractorFactory extractorFactory; + private HlsPlaylistParserFactory playlistParserFactory; + @Nullable private List streamKeys; + private HlsPlaylistTracker.Factory playlistTrackerFactory; + private CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory; + private DrmSessionManager drmSessionManager; + private LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private boolean allowChunklessPreparation; + @MetadataType private int metadataType; + private boolean useSessionKeys; + private boolean isCreateCalled; + @Nullable private Object tag; + + /** + * Creates a new factory for {@link HlsMediaSource}s. + * + * @param dataSourceFactory A data source factory that will be wrapped by a {@link + * DefaultHlsDataSourceFactory} to create {@link DataSource}s for manifests, segments and + * keys. + */ + public Factory(DataSource.Factory dataSourceFactory) { + this(new DefaultHlsDataSourceFactory(dataSourceFactory)); + } + + /** + * Creates a new factory for {@link HlsMediaSource}s. + * + * @param hlsDataSourceFactory An {@link HlsDataSourceFactory} for {@link DataSource}s for + * manifests, segments and keys. + */ + public Factory(HlsDataSourceFactory hlsDataSourceFactory) { + this.hlsDataSourceFactory = Assertions.checkNotNull(hlsDataSourceFactory); + playlistParserFactory = new DefaultHlsPlaylistParserFactory(); + playlistTrackerFactory = DefaultHlsPlaylistTracker.FACTORY; + extractorFactory = HlsExtractorFactory.DEFAULT; + drmSessionManager = DrmSessionManager.getDummyDrmSessionManager(); + loadErrorHandlingPolicy = new DefaultLoadErrorHandlingPolicy(); + compositeSequenceableLoaderFactory = new DefaultCompositeSequenceableLoaderFactory(); + metadataType = METADATA_TYPE_ID3; + } + + /** + * Sets a tag for the media source which will be published in the {@link + * org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline} of the source as {@link + * org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline.Window#tag}. + * + * @param tag A tag for the media source. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setTag(@Nullable Object tag) { + Assertions.checkState(!isCreateCalled); + this.tag = tag; + return this; + } + + /** + * Sets the factory for {@link Extractor}s for the segments. The default value is {@link + * HlsExtractorFactory#DEFAULT}. + * + * @param extractorFactory An {@link HlsExtractorFactory} for {@link Extractor}s for the + * segments. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setExtractorFactory(HlsExtractorFactory extractorFactory) { + Assertions.checkState(!isCreateCalled); + this.extractorFactory = Assertions.checkNotNull(extractorFactory); + return this; + } + + /** + * Sets the {@link LoadErrorHandlingPolicy}. The default value is created by calling {@link + * DefaultLoadErrorHandlingPolicy#DefaultLoadErrorHandlingPolicy()}. + * + *

Calling this method overrides any calls to {@link #setMinLoadableRetryCount(int)}. + * + * @param loadErrorHandlingPolicy A {@link LoadErrorHandlingPolicy}. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setLoadErrorHandlingPolicy(LoadErrorHandlingPolicy loadErrorHandlingPolicy) { + Assertions.checkState(!isCreateCalled); + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + return this; + } + + /** + * Sets the minimum number of times to retry if a loading error occurs. The default value is + * {@link DefaultLoadErrorHandlingPolicy#DEFAULT_MIN_LOADABLE_RETRY_COUNT}. + * + *

Calling this method is equivalent to calling {@link #setLoadErrorHandlingPolicy} with + * {@link DefaultLoadErrorHandlingPolicy#DefaultLoadErrorHandlingPolicy(int) + * DefaultLoadErrorHandlingPolicy(minLoadableRetryCount)} + * + * @param minLoadableRetryCount The minimum number of times to retry if a loading error occurs. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + * @deprecated Use {@link #setLoadErrorHandlingPolicy(LoadErrorHandlingPolicy)} instead. + */ + @Deprecated + public Factory setMinLoadableRetryCount(int minLoadableRetryCount) { + Assertions.checkState(!isCreateCalled); + this.loadErrorHandlingPolicy = new DefaultLoadErrorHandlingPolicy(minLoadableRetryCount); + return this; + } + + /** + * Sets the factory from which playlist parsers will be obtained. The default value is a {@link + * DefaultHlsPlaylistParserFactory}. + * + * @param playlistParserFactory An {@link HlsPlaylistParserFactory}. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setPlaylistParserFactory(HlsPlaylistParserFactory playlistParserFactory) { + Assertions.checkState(!isCreateCalled); + this.playlistParserFactory = Assertions.checkNotNull(playlistParserFactory); + return this; + } + + /** + * Sets the {@link HlsPlaylistTracker} factory. The default value is {@link + * DefaultHlsPlaylistTracker#FACTORY}. + * + * @param playlistTrackerFactory A factory for {@link HlsPlaylistTracker} instances. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setPlaylistTrackerFactory(HlsPlaylistTracker.Factory playlistTrackerFactory) { + Assertions.checkState(!isCreateCalled); + this.playlistTrackerFactory = Assertions.checkNotNull(playlistTrackerFactory); + return this; + } + + /** + * Sets the factory to create composite {@link SequenceableLoader}s for when this media source + * loads data from multiple streams (video, audio etc...). The default is an instance of {@link + * DefaultCompositeSequenceableLoaderFactory}. + * + * @param compositeSequenceableLoaderFactory A factory to create composite {@link + * SequenceableLoader}s for when this media source loads data from multiple streams (video, + * audio etc...). + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setCompositeSequenceableLoaderFactory( + CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory) { + Assertions.checkState(!isCreateCalled); + this.compositeSequenceableLoaderFactory = + Assertions.checkNotNull(compositeSequenceableLoaderFactory); + return this; + } + + /** + * Sets whether chunkless preparation is allowed. If true, preparation without chunk downloads + * will be enabled for streams that provide sufficient information in their master playlist. + * + * @param allowChunklessPreparation Whether chunkless preparation is allowed. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + public Factory setAllowChunklessPreparation(boolean allowChunklessPreparation) { + Assertions.checkState(!isCreateCalled); + this.allowChunklessPreparation = allowChunklessPreparation; + return this; + } + + /** + * Sets the type of metadata to extract from the HLS source (defaults to {@link + * #METADATA_TYPE_ID3}). + * + *

HLS supports in-band ID3 in both TS and fMP4 streams, but in the fMP4 case the data is + * wrapped in an EMSG box [spec]. + * + *

If this is set to {@link #METADATA_TYPE_ID3} then raw ID3 metadata of will be extracted + * from TS sources. From fMP4 streams EMSGs containing metadata of this type (in the variant + * stream only) will be unwrapped to expose the inner data. All other in-band metadata will be + * dropped. + * + *

If this is set to {@link #METADATA_TYPE_EMSG} then all EMSG data from the fMP4 variant + * stream will be extracted. No metadata will be extracted from TS streams, since they don't + * support EMSG. + * + * @param metadataType The type of metadata to extract. + * @return This factory, for convenience. + */ + public Factory setMetadataType(@MetadataType int metadataType) { + Assertions.checkState(!isCreateCalled); + this.metadataType = metadataType; + return this; + } + + /** + * Sets whether to use #EXT-X-SESSION-KEY tags provided in the master playlist. If enabled, it's + * assumed that any single session key declared in the master playlist can be used to obtain all + * of the keys required for playback. For media where this is not true, this option should not + * be enabled. + * + * @param useSessionKeys Whether to use #EXT-X-SESSION-KEY tags. + * @return This factory, for convenience. + */ + public Factory setUseSessionKeys(boolean useSessionKeys) { + this.useSessionKeys = useSessionKeys; + return this; + } + + /** + * @deprecated Use {@link #createMediaSource(Uri)} and {@link #addEventListener(Handler, + * MediaSourceEventListener)} instead. + */ + @Deprecated + public HlsMediaSource createMediaSource( + Uri playlistUri, + @Nullable Handler eventHandler, + @Nullable MediaSourceEventListener eventListener) { + HlsMediaSource mediaSource = createMediaSource(playlistUri); + if (eventHandler != null && eventListener != null) { + mediaSource.addEventListener(eventHandler, eventListener); + } + return mediaSource; + } + + /** + * Sets the {@link DrmSessionManager} to use for acquiring {@link DrmSession DrmSessions}. The + * default value is {@link DrmSessionManager#DUMMY}. + * + * @param drmSessionManager The {@link DrmSessionManager}. + * @return This factory, for convenience. + * @throws IllegalStateException If one of the {@code create} methods has already been called. + */ + @Override + public Factory setDrmSessionManager(DrmSessionManager drmSessionManager) { + Assertions.checkState(!isCreateCalled); + this.drmSessionManager = drmSessionManager; + return this; + } + + /** + * Returns a new {@link HlsMediaSource} using the current parameters. + * + * @return The new {@link HlsMediaSource}. + */ + @Override + public HlsMediaSource createMediaSource(Uri playlistUri) { + isCreateCalled = true; + if (streamKeys != null) { + playlistParserFactory = + new FilteringHlsPlaylistParserFactory(playlistParserFactory, streamKeys); + } + return new HlsMediaSource( + playlistUri, + hlsDataSourceFactory, + extractorFactory, + compositeSequenceableLoaderFactory, + drmSessionManager, + loadErrorHandlingPolicy, + playlistTrackerFactory.createTracker( + hlsDataSourceFactory, loadErrorHandlingPolicy, playlistParserFactory), + allowChunklessPreparation, + metadataType, + useSessionKeys, + tag); + } + + @Override + public Factory setStreamKeys(List streamKeys) { + Assertions.checkState(!isCreateCalled); + this.streamKeys = streamKeys; + return this; + } + + @Override + public int[] getSupportedTypes() { + return new int[] {C.TYPE_HLS}; + } + + } + + private final HlsExtractorFactory extractorFactory; + private final Uri manifestUri; + private final HlsDataSourceFactory dataSourceFactory; + private final CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory; + private final DrmSessionManager drmSessionManager; + private final LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private final boolean allowChunklessPreparation; + private final @MetadataType int metadataType; + private final boolean useSessionKeys; + private final HlsPlaylistTracker playlistTracker; + @Nullable private final Object tag; + + @Nullable private TransferListener mediaTransferListener; + + private HlsMediaSource( + Uri manifestUri, + HlsDataSourceFactory dataSourceFactory, + HlsExtractorFactory extractorFactory, + CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory, + DrmSessionManager drmSessionManager, + LoadErrorHandlingPolicy loadErrorHandlingPolicy, + HlsPlaylistTracker playlistTracker, + boolean allowChunklessPreparation, + @MetadataType int metadataType, + boolean useSessionKeys, + @Nullable Object tag) { + this.manifestUri = manifestUri; + this.dataSourceFactory = dataSourceFactory; + this.extractorFactory = extractorFactory; + this.compositeSequenceableLoaderFactory = compositeSequenceableLoaderFactory; + this.drmSessionManager = drmSessionManager; + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + this.playlistTracker = playlistTracker; + this.allowChunklessPreparation = allowChunklessPreparation; + this.metadataType = metadataType; + this.useSessionKeys = useSessionKeys; + this.tag = tag; + } + + @Override + @Nullable + public Object getTag() { + return tag; + } + + @Override + protected void prepareSourceInternal(@Nullable TransferListener mediaTransferListener) { + this.mediaTransferListener = mediaTransferListener; + drmSessionManager.prepare(); + EventDispatcher eventDispatcher = createEventDispatcher(/* mediaPeriodId= */ null); + playlistTracker.start(manifestUri, eventDispatcher, /* listener= */ this); + } + + @Override + public void maybeThrowSourceInfoRefreshError() throws IOException { + playlistTracker.maybeThrowPrimaryPlaylistRefreshError(); + } + + @Override + public MediaPeriod createPeriod(MediaPeriodId id, Allocator allocator, long startPositionUs) { + EventDispatcher eventDispatcher = createEventDispatcher(id); + return new HlsMediaPeriod( + extractorFactory, + playlistTracker, + dataSourceFactory, + mediaTransferListener, + drmSessionManager, + loadErrorHandlingPolicy, + eventDispatcher, + allocator, + compositeSequenceableLoaderFactory, + allowChunklessPreparation, + metadataType, + useSessionKeys); + } + + @Override + public void releasePeriod(MediaPeriod mediaPeriod) { + ((HlsMediaPeriod) mediaPeriod).release(); + } + + @Override + protected void releaseSourceInternal() { + playlistTracker.stop(); + drmSessionManager.release(); + } + + @Override + public void onPrimaryPlaylistRefreshed(HlsMediaPlaylist playlist) { + SinglePeriodTimeline timeline; + long windowStartTimeMs = playlist.hasProgramDateTime ? C.usToMs(playlist.startTimeUs) + : C.TIME_UNSET; + // For playlist types EVENT and VOD we know segments are never removed, so the presentation + // started at the same time as the window. Otherwise, we don't know the presentation start time. + long presentationStartTimeMs = + playlist.playlistType == HlsMediaPlaylist.PLAYLIST_TYPE_EVENT + || playlist.playlistType == HlsMediaPlaylist.PLAYLIST_TYPE_VOD + ? windowStartTimeMs + : C.TIME_UNSET; + long windowDefaultStartPositionUs = playlist.startOffsetUs; + // masterPlaylist is non-null because the first playlist has been fetched by now. + HlsManifest manifest = + new HlsManifest(Assertions.checkNotNull(playlistTracker.getMasterPlaylist()), playlist); + if (playlistTracker.isLive()) { + long offsetFromInitialStartTimeUs = + playlist.startTimeUs - playlistTracker.getInitialStartTimeUs(); + long periodDurationUs = + playlist.hasEndTag ? offsetFromInitialStartTimeUs + playlist.durationUs : C.TIME_UNSET; + List segments = playlist.segments; + if (windowDefaultStartPositionUs == C.TIME_UNSET) { + windowDefaultStartPositionUs = 0; + if (!segments.isEmpty()) { + int defaultStartSegmentIndex = Math.max(0, segments.size() - 3); + // We attempt to set the default start position to be at least twice the target duration + // behind the live edge. + long minStartPositionUs = playlist.durationUs - playlist.targetDurationUs * 2; + while (defaultStartSegmentIndex > 0 + && segments.get(defaultStartSegmentIndex).relativeStartTimeUs > minStartPositionUs) { + defaultStartSegmentIndex--; + } + windowDefaultStartPositionUs = segments.get(defaultStartSegmentIndex).relativeStartTimeUs; + } + } + timeline = + new SinglePeriodTimeline( + presentationStartTimeMs, + windowStartTimeMs, + periodDurationUs, + /* windowDurationUs= */ playlist.durationUs, + /* windowPositionInPeriodUs= */ offsetFromInitialStartTimeUs, + windowDefaultStartPositionUs, + /* isSeekable= */ true, + /* isDynamic= */ !playlist.hasEndTag, + /* isLive= */ true, + manifest, + tag); + } else /* not live */ { + if (windowDefaultStartPositionUs == C.TIME_UNSET) { + windowDefaultStartPositionUs = 0; + } + timeline = + new SinglePeriodTimeline( + presentationStartTimeMs, + windowStartTimeMs, + /* periodDurationUs= */ playlist.durationUs, + /* windowDurationUs= */ playlist.durationUs, + /* windowPositionInPeriodUs= */ 0, + windowDefaultStartPositionUs, + /* isSeekable= */ true, + /* isDynamic= */ false, + /* isLive= */ false, + manifest, + tag); + } + refreshSourceInfo(timeline); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsSampleStream.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsSampleStream.java new file mode 100644 index 0000000000..5f44810af5 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsSampleStream.java @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; + +/** + * {@link SampleStream} for a particular sample queue in HLS. + */ +/* package */ final class HlsSampleStream implements SampleStream { + + private final int trackGroupIndex; + private final HlsSampleStreamWrapper sampleStreamWrapper; + private int sampleQueueIndex; + + public HlsSampleStream(HlsSampleStreamWrapper sampleStreamWrapper, int trackGroupIndex) { + this.sampleStreamWrapper = sampleStreamWrapper; + this.trackGroupIndex = trackGroupIndex; + sampleQueueIndex = HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_PENDING; + } + + public void bindSampleQueue() { + Assertions.checkArgument(sampleQueueIndex == HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_PENDING); + sampleQueueIndex = sampleStreamWrapper.bindSampleQueueToSampleStream(trackGroupIndex); + } + + public void unbindSampleQueue() { + if (sampleQueueIndex != HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_PENDING) { + sampleStreamWrapper.unbindSampleQueue(trackGroupIndex); + sampleQueueIndex = HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_PENDING; + } + } + + // SampleStream implementation. + + @Override + public boolean isReady() { + return sampleQueueIndex == HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_NO_MAPPING_NON_FATAL + || (hasValidSampleQueueIndex() && sampleStreamWrapper.isReady(sampleQueueIndex)); + } + + @Override + public void maybeThrowError() throws IOException { + if (sampleQueueIndex == HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_NO_MAPPING_FATAL) { + throw new SampleQueueMappingException( + sampleStreamWrapper.getTrackGroups().get(trackGroupIndex).getFormat(0).sampleMimeType); + } else if (sampleQueueIndex == HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_PENDING) { + sampleStreamWrapper.maybeThrowError(); + } else if (sampleQueueIndex != HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_NO_MAPPING_NON_FATAL) { + sampleStreamWrapper.maybeThrowError(sampleQueueIndex); + } + } + + @Override + public int readData(FormatHolder formatHolder, DecoderInputBuffer buffer, boolean requireFormat) { + if (sampleQueueIndex == HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_NO_MAPPING_NON_FATAL) { + buffer.addFlag(C.BUFFER_FLAG_END_OF_STREAM); + return C.RESULT_BUFFER_READ; + } + return hasValidSampleQueueIndex() + ? sampleStreamWrapper.readData(sampleQueueIndex, formatHolder, buffer, requireFormat) + : C.RESULT_NOTHING_READ; + } + + @Override + public int skipData(long positionUs) { + return hasValidSampleQueueIndex() + ? sampleStreamWrapper.skipData(sampleQueueIndex, positionUs) + : 0; + } + + // Internal methods. + + private boolean hasValidSampleQueueIndex() { + return sampleQueueIndex != HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_PENDING + && sampleQueueIndex != HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_NO_MAPPING_NON_FATAL + && sampleQueueIndex != HlsSampleStreamWrapper.SAMPLE_QUEUE_INDEX_NO_MAPPING_FATAL; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsSampleStreamWrapper.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsSampleStreamWrapper.java new file mode 100644 index 0000000000..833abbc29f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsSampleStreamWrapper.java @@ -0,0 +1,1535 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.net.Uri; +import android.os.Handler; +import android.util.SparseIntArray; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.DummyTrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.emsg.EventMessage; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.emsg.EventMessageDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.id3.PrivFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleQueue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleQueue.UpstreamFormatChangedListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SequenceableLoader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.Chunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunkIterator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Allocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.LoadErrorAction; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.EOFException; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import org.checkerframework.checker.nullness.compatqual.NullableType; +import org.checkerframework.checker.nullness.qual.EnsuresNonNull; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; +import org.checkerframework.checker.nullness.qual.RequiresNonNull; + +/** + * Loads {@link HlsMediaChunk}s obtained from a {@link HlsChunkSource}, and provides + * {@link SampleStream}s from which the loaded media can be consumed. + */ +/* package */ final class HlsSampleStreamWrapper implements Loader.Callback, + Loader.ReleaseCallback, SequenceableLoader, ExtractorOutput, UpstreamFormatChangedListener { + + /** + * A callback to be notified of events. + */ + public interface Callback extends SequenceableLoader.Callback { + + /** + * Called when the wrapper has been prepared. + * + *

Note: This method will be called on a later handler loop than the one on which either + * {@link #prepareWithMasterPlaylistInfo} or {@link #continuePreparing} are invoked. + */ + void onPrepared(); + + /** + * Called to schedule a {@link #continueLoading(long)} call when the playlist referred by the + * given url changes. + */ + void onPlaylistRefreshRequired(Uri playlistUrl); + } + + private static final String TAG = "HlsSampleStreamWrapper"; + + public static final int SAMPLE_QUEUE_INDEX_PENDING = -1; + public static final int SAMPLE_QUEUE_INDEX_NO_MAPPING_FATAL = -2; + public static final int SAMPLE_QUEUE_INDEX_NO_MAPPING_NON_FATAL = -3; + + private static final Set MAPPABLE_TYPES = + Collections.unmodifiableSet( + new HashSet<>( + Arrays.asList(C.TRACK_TYPE_AUDIO, C.TRACK_TYPE_VIDEO, C.TRACK_TYPE_METADATA))); + + private final int trackType; + private final Callback callback; + private final HlsChunkSource chunkSource; + private final Allocator allocator; + @Nullable private final Format muxedAudioFormat; + private final DrmSessionManager drmSessionManager; + private final LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private final Loader loader; + private final EventDispatcher eventDispatcher; + private final @HlsMediaSource.MetadataType int metadataType; + private final HlsChunkSource.HlsChunkHolder nextChunkHolder; + private final ArrayList mediaChunks; + private final List readOnlyMediaChunks; + // Using runnables rather than in-line method references to avoid repeated allocations. + private final Runnable maybeFinishPrepareRunnable; + private final Runnable onTracksEndedRunnable; + private final Handler handler; + private final ArrayList hlsSampleStreams; + private final Map overridingDrmInitData; + + private FormatAdjustingSampleQueue[] sampleQueues; + private int[] sampleQueueTrackIds; + private Set sampleQueueMappingDoneByType; + private SparseIntArray sampleQueueIndicesByType; + @MonotonicNonNull private TrackOutput emsgUnwrappingTrackOutput; + private int primarySampleQueueType; + private int primarySampleQueueIndex; + private boolean sampleQueuesBuilt; + private boolean prepared; + private int enabledTrackGroupCount; + @MonotonicNonNull private Format upstreamTrackFormat; + @Nullable private Format downstreamTrackFormat; + private boolean released; + + // Tracks are complicated in HLS. See documentation of buildTracksFromSampleStreams for details. + // Indexed by track (as exposed by this source). + @MonotonicNonNull private TrackGroupArray trackGroups; + @MonotonicNonNull private Set optionalTrackGroups; + // Indexed by track group. + private int @MonotonicNonNull [] trackGroupToSampleQueueIndex; + private int primaryTrackGroupIndex; + private boolean haveAudioVideoSampleQueues; + private boolean[] sampleQueuesEnabledStates; + private boolean[] sampleQueueIsAudioVideoFlags; + + private long lastSeekPositionUs; + private long pendingResetPositionUs; + private boolean pendingResetUpstreamFormats; + private boolean seenFirstTrackSelection; + private boolean loadingFinished; + + // Accessed only by the loading thread. + private boolean tracksEnded; + private long sampleOffsetUs; + @Nullable private DrmInitData drmInitData; + private int chunkUid; + + /** + * @param trackType The type of the track. One of the {@link C} {@code TRACK_TYPE_*} constants. + * @param callback A callback for the wrapper. + * @param chunkSource A {@link HlsChunkSource} from which chunks to load are obtained. + * @param overridingDrmInitData Overriding {@link DrmInitData}, keyed by protection scheme type + * (i.e. {@link DrmInitData#schemeType}). If the stream has {@link DrmInitData} and uses a + * protection scheme type for which overriding {@link DrmInitData} is provided, then the + * stream's {@link DrmInitData} will be overridden. + * @param allocator An {@link Allocator} from which to obtain media buffer allocations. + * @param positionUs The position from which to start loading media. + * @param muxedAudioFormat Optional muxed audio {@link Format} as defined by the master playlist. + * @param drmSessionManager The {@link DrmSessionManager} to acquire {@link DrmSession + * DrmSessions} with. + * @param loadErrorHandlingPolicy A {@link LoadErrorHandlingPolicy}. + * @param eventDispatcher A dispatcher to notify of events. + */ + public HlsSampleStreamWrapper( + int trackType, + Callback callback, + HlsChunkSource chunkSource, + Map overridingDrmInitData, + Allocator allocator, + long positionUs, + @Nullable Format muxedAudioFormat, + DrmSessionManager drmSessionManager, + LoadErrorHandlingPolicy loadErrorHandlingPolicy, + EventDispatcher eventDispatcher, + @HlsMediaSource.MetadataType int metadataType) { + this.trackType = trackType; + this.callback = callback; + this.chunkSource = chunkSource; + this.overridingDrmInitData = overridingDrmInitData; + this.allocator = allocator; + this.muxedAudioFormat = muxedAudioFormat; + this.drmSessionManager = drmSessionManager; + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + this.eventDispatcher = eventDispatcher; + this.metadataType = metadataType; + loader = new Loader("Loader:HlsSampleStreamWrapper"); + nextChunkHolder = new HlsChunkSource.HlsChunkHolder(); + sampleQueueTrackIds = new int[0]; + sampleQueueMappingDoneByType = new HashSet<>(MAPPABLE_TYPES.size()); + sampleQueueIndicesByType = new SparseIntArray(MAPPABLE_TYPES.size()); + sampleQueues = new FormatAdjustingSampleQueue[0]; + sampleQueueIsAudioVideoFlags = new boolean[0]; + sampleQueuesEnabledStates = new boolean[0]; + mediaChunks = new ArrayList<>(); + readOnlyMediaChunks = Collections.unmodifiableList(mediaChunks); + hlsSampleStreams = new ArrayList<>(); + // Suppressions are needed because `this` is not initialized here. + @SuppressWarnings("nullness:methodref.receiver.bound.invalid") + Runnable maybeFinishPrepareRunnable = this::maybeFinishPrepare; + this.maybeFinishPrepareRunnable = maybeFinishPrepareRunnable; + @SuppressWarnings("nullness:methodref.receiver.bound.invalid") + Runnable onTracksEndedRunnable = this::onTracksEnded; + this.onTracksEndedRunnable = onTracksEndedRunnable; + handler = new Handler(); + lastSeekPositionUs = positionUs; + pendingResetPositionUs = positionUs; + } + + public void continuePreparing() { + if (!prepared) { + continueLoading(lastSeekPositionUs); + } + } + + /** + * Prepares the sample stream wrapper with master playlist information. + * + * @param trackGroups The {@link TrackGroup TrackGroups} to expose through {@link + * #getTrackGroups()}. + * @param primaryTrackGroupIndex The index of the adaptive track group. + * @param optionalTrackGroupsIndices The indices of any {@code trackGroups} that should not + * trigger a failure if not found in the media playlist's segments. + */ + public void prepareWithMasterPlaylistInfo( + TrackGroup[] trackGroups, int primaryTrackGroupIndex, int... optionalTrackGroupsIndices) { + this.trackGroups = createTrackGroupArrayWithDrmInfo(trackGroups); + optionalTrackGroups = new HashSet<>(); + for (int optionalTrackGroupIndex : optionalTrackGroupsIndices) { + optionalTrackGroups.add(this.trackGroups.get(optionalTrackGroupIndex)); + } + this.primaryTrackGroupIndex = primaryTrackGroupIndex; + handler.post(callback::onPrepared); + setIsPrepared(); + } + + public void maybeThrowPrepareError() throws IOException { + maybeThrowError(); + if (loadingFinished && !prepared) { + throw new ParserException("Loading finished before preparation is complete."); + } + } + + public TrackGroupArray getTrackGroups() { + assertIsPrepared(); + return trackGroups; + } + + public int getPrimaryTrackGroupIndex() { + return primaryTrackGroupIndex; + } + + public int bindSampleQueueToSampleStream(int trackGroupIndex) { + assertIsPrepared(); + Assertions.checkNotNull(trackGroupToSampleQueueIndex); + + int sampleQueueIndex = trackGroupToSampleQueueIndex[trackGroupIndex]; + if (sampleQueueIndex == C.INDEX_UNSET) { + return optionalTrackGroups.contains(trackGroups.get(trackGroupIndex)) + ? SAMPLE_QUEUE_INDEX_NO_MAPPING_NON_FATAL + : SAMPLE_QUEUE_INDEX_NO_MAPPING_FATAL; + } + if (sampleQueuesEnabledStates[sampleQueueIndex]) { + // This sample queue is already bound to a different sample stream. + return SAMPLE_QUEUE_INDEX_NO_MAPPING_FATAL; + } + sampleQueuesEnabledStates[sampleQueueIndex] = true; + return sampleQueueIndex; + } + + public void unbindSampleQueue(int trackGroupIndex) { + assertIsPrepared(); + Assertions.checkNotNull(trackGroupToSampleQueueIndex); + int sampleQueueIndex = trackGroupToSampleQueueIndex[trackGroupIndex]; + Assertions.checkState(sampleQueuesEnabledStates[sampleQueueIndex]); + sampleQueuesEnabledStates[sampleQueueIndex] = false; + } + + /** + * Called by the parent {@link HlsMediaPeriod} when a track selection occurs. + * + * @param selections The renderer track selections. + * @param mayRetainStreamFlags Flags indicating whether the existing sample stream can be retained + * for each selection. A {@code true} value indicates that the selection is unchanged, and + * that the caller does not require that the sample stream be recreated. + * @param streams The existing sample streams, which will be updated to reflect the provided + * selections. + * @param streamResetFlags Will be updated to indicate new sample streams, and sample streams that + * have been retained but with the requirement that the consuming renderer be reset. + * @param positionUs The current playback position in microseconds. + * @param forceReset If true then a reset is forced (i.e. a seek will be performed with in-buffer + * seeking disabled). + * @return Whether this wrapper requires the parent {@link HlsMediaPeriod} to perform a seek as + * part of the track selection. + */ + public boolean selectTracks( + @NullableType TrackSelection[] selections, + boolean[] mayRetainStreamFlags, + @NullableType SampleStream[] streams, + boolean[] streamResetFlags, + long positionUs, + boolean forceReset) { + assertIsPrepared(); + int oldEnabledTrackGroupCount = enabledTrackGroupCount; + // Deselect old tracks. + for (int i = 0; i < selections.length; i++) { + HlsSampleStream stream = (HlsSampleStream) streams[i]; + if (stream != null && (selections[i] == null || !mayRetainStreamFlags[i])) { + enabledTrackGroupCount--; + stream.unbindSampleQueue(); + streams[i] = null; + } + } + // We'll always need to seek if we're being forced to reset, or if this is a first selection to + // a position other than the one we started preparing with, or if we're making a selection + // having previously disabled all tracks. + boolean seekRequired = + forceReset + || (seenFirstTrackSelection + ? oldEnabledTrackGroupCount == 0 + : positionUs != lastSeekPositionUs); + // Get the old (i.e. current before the loop below executes) primary track selection. The new + // primary selection will equal the old one unless it's changed in the loop. + TrackSelection oldPrimaryTrackSelection = chunkSource.getTrackSelection(); + TrackSelection primaryTrackSelection = oldPrimaryTrackSelection; + // Select new tracks. + for (int i = 0; i < selections.length; i++) { + TrackSelection selection = selections[i]; + if (selection == null) { + continue; + } + int trackGroupIndex = trackGroups.indexOf(selection.getTrackGroup()); + if (trackGroupIndex == primaryTrackGroupIndex) { + primaryTrackSelection = selection; + chunkSource.setTrackSelection(selection); + } + if (streams[i] == null) { + enabledTrackGroupCount++; + streams[i] = new HlsSampleStream(this, trackGroupIndex); + streamResetFlags[i] = true; + if (trackGroupToSampleQueueIndex != null) { + ((HlsSampleStream) streams[i]).bindSampleQueue(); + // If there's still a chance of avoiding a seek, try and seek within the sample queue. + if (!seekRequired) { + SampleQueue sampleQueue = sampleQueues[trackGroupToSampleQueueIndex[trackGroupIndex]]; + // A seek can be avoided if we're able to seek to the current playback position in + // the sample queue, or if we haven't read anything from the queue since the previous + // seek (this case is common for sparse tracks such as metadata tracks). In all other + // cases a seek is required. + seekRequired = + !sampleQueue.seekTo(positionUs, /* allowTimeBeyondBuffer= */ true) + && sampleQueue.getReadIndex() != 0; + } + } + } + } + + if (enabledTrackGroupCount == 0) { + chunkSource.reset(); + downstreamTrackFormat = null; + pendingResetUpstreamFormats = true; + mediaChunks.clear(); + if (loader.isLoading()) { + if (sampleQueuesBuilt) { + // Discard as much as we can synchronously. + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.discardToEnd(); + } + } + loader.cancelLoading(); + } else { + resetSampleQueues(); + } + } else { + if (!mediaChunks.isEmpty() + && !Util.areEqual(primaryTrackSelection, oldPrimaryTrackSelection)) { + // The primary track selection has changed and we have buffered media. The buffered media + // may need to be discarded. + boolean primarySampleQueueDirty = false; + if (!seenFirstTrackSelection) { + long bufferedDurationUs = positionUs < 0 ? -positionUs : 0; + HlsMediaChunk lastMediaChunk = getLastMediaChunk(); + MediaChunkIterator[] mediaChunkIterators = + chunkSource.createMediaChunkIterators(lastMediaChunk, positionUs); + primaryTrackSelection.updateSelectedTrack( + positionUs, + bufferedDurationUs, + C.TIME_UNSET, + readOnlyMediaChunks, + mediaChunkIterators); + int chunkIndex = chunkSource.getTrackGroup().indexOf(lastMediaChunk.trackFormat); + if (primaryTrackSelection.getSelectedIndexInTrackGroup() != chunkIndex) { + // This is the first selection and the chunk loaded during preparation does not match + // the initially selected format. + primarySampleQueueDirty = true; + } + } else { + // The primary sample queue contains media buffered for the old primary track selection. + primarySampleQueueDirty = true; + } + if (primarySampleQueueDirty) { + forceReset = true; + seekRequired = true; + pendingResetUpstreamFormats = true; + } + } + if (seekRequired) { + seekToUs(positionUs, forceReset); + // We'll need to reset renderers consuming from all streams due to the seek. + for (int i = 0; i < streams.length; i++) { + if (streams[i] != null) { + streamResetFlags[i] = true; + } + } + } + } + + updateSampleStreams(streams); + seenFirstTrackSelection = true; + return seekRequired; + } + + public void discardBuffer(long positionUs, boolean toKeyframe) { + if (!sampleQueuesBuilt || isPendingReset()) { + return; + } + int sampleQueueCount = sampleQueues.length; + for (int i = 0; i < sampleQueueCount; i++) { + sampleQueues[i].discardTo(positionUs, toKeyframe, sampleQueuesEnabledStates[i]); + } + } + + /** + * Attempts to seek to the specified position in microseconds. + * + * @param positionUs The seek position in microseconds. + * @param forceReset If true then a reset is forced (i.e. in-buffer seeking is disabled). + * @return Whether the wrapper was reset, meaning the wrapped sample queues were reset. If false, + * an in-buffer seek was performed. + */ + public boolean seekToUs(long positionUs, boolean forceReset) { + lastSeekPositionUs = positionUs; + if (isPendingReset()) { + // A reset is already pending. We only need to update its position. + pendingResetPositionUs = positionUs; + return true; + } + + // If we're not forced to reset, try and seek within the buffer. + if (sampleQueuesBuilt && !forceReset && seekInsideBufferUs(positionUs)) { + return false; + } + + // We can't seek inside the buffer, and so need to reset. + pendingResetPositionUs = positionUs; + loadingFinished = false; + mediaChunks.clear(); + if (loader.isLoading()) { + loader.cancelLoading(); + } else { + loader.clearFatalError(); + resetSampleQueues(); + } + return true; + } + + public void release() { + if (prepared) { + // Discard as much as we can synchronously. We only do this if we're prepared, since otherwise + // sampleQueues may still be being modified by the loading thread. + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.preRelease(); + } + } + loader.release(this); + handler.removeCallbacksAndMessages(null); + released = true; + hlsSampleStreams.clear(); + } + + @Override + public void onLoaderReleased() { + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.release(); + } + } + + public void setIsTimestampMaster(boolean isTimestampMaster) { + chunkSource.setIsTimestampMaster(isTimestampMaster); + } + + public boolean onPlaylistError(Uri playlistUrl, long blacklistDurationMs) { + return chunkSource.onPlaylistError(playlistUrl, blacklistDurationMs); + } + + // SampleStream implementation. + + public boolean isReady(int sampleQueueIndex) { + return !isPendingReset() && sampleQueues[sampleQueueIndex].isReady(loadingFinished); + } + + public void maybeThrowError(int sampleQueueIndex) throws IOException { + maybeThrowError(); + sampleQueues[sampleQueueIndex].maybeThrowError(); + } + + public void maybeThrowError() throws IOException { + loader.maybeThrowError(); + chunkSource.maybeThrowError(); + } + + public int readData(int sampleQueueIndex, FormatHolder formatHolder, DecoderInputBuffer buffer, + boolean requireFormat) { + if (isPendingReset()) { + return C.RESULT_NOTHING_READ; + } + + // TODO: Split into discard (in discardBuffer) and format change (here and in skipData) steps. + if (!mediaChunks.isEmpty()) { + int discardToMediaChunkIndex = 0; + while (discardToMediaChunkIndex < mediaChunks.size() - 1 + && finishedReadingChunk(mediaChunks.get(discardToMediaChunkIndex))) { + discardToMediaChunkIndex++; + } + Util.removeRange(mediaChunks, 0, discardToMediaChunkIndex); + HlsMediaChunk currentChunk = mediaChunks.get(0); + Format trackFormat = currentChunk.trackFormat; + if (!trackFormat.equals(downstreamTrackFormat)) { + eventDispatcher.downstreamFormatChanged(trackType, trackFormat, + currentChunk.trackSelectionReason, currentChunk.trackSelectionData, + currentChunk.startTimeUs); + } + downstreamTrackFormat = trackFormat; + } + + int result = + sampleQueues[sampleQueueIndex].read( + formatHolder, buffer, requireFormat, loadingFinished, lastSeekPositionUs); + if (result == C.RESULT_FORMAT_READ) { + Format format = Assertions.checkNotNull(formatHolder.format); + if (sampleQueueIndex == primarySampleQueueIndex) { + // Fill in primary sample format with information from the track format. + int chunkUid = sampleQueues[sampleQueueIndex].peekSourceId(); + int chunkIndex = 0; + while (chunkIndex < mediaChunks.size() && mediaChunks.get(chunkIndex).uid != chunkUid) { + chunkIndex++; + } + Format trackFormat = + chunkIndex < mediaChunks.size() + ? mediaChunks.get(chunkIndex).trackFormat + : Assertions.checkNotNull(upstreamTrackFormat); + format = format.copyWithManifestFormatInfo(trackFormat); + } + formatHolder.format = format; + } + return result; + } + + public int skipData(int sampleQueueIndex, long positionUs) { + if (isPendingReset()) { + return 0; + } + + SampleQueue sampleQueue = sampleQueues[sampleQueueIndex]; + if (loadingFinished && positionUs > sampleQueue.getLargestQueuedTimestampUs()) { + return sampleQueue.advanceToEnd(); + } else { + return sampleQueue.advanceTo(positionUs); + } + } + + // SequenceableLoader implementation + + @Override + public long getBufferedPositionUs() { + if (loadingFinished) { + return C.TIME_END_OF_SOURCE; + } else if (isPendingReset()) { + return pendingResetPositionUs; + } else { + long bufferedPositionUs = lastSeekPositionUs; + HlsMediaChunk lastMediaChunk = getLastMediaChunk(); + HlsMediaChunk lastCompletedMediaChunk = lastMediaChunk.isLoadCompleted() ? lastMediaChunk + : mediaChunks.size() > 1 ? mediaChunks.get(mediaChunks.size() - 2) : null; + if (lastCompletedMediaChunk != null) { + bufferedPositionUs = Math.max(bufferedPositionUs, lastCompletedMediaChunk.endTimeUs); + } + if (sampleQueuesBuilt) { + for (SampleQueue sampleQueue : sampleQueues) { + bufferedPositionUs = + Math.max(bufferedPositionUs, sampleQueue.getLargestQueuedTimestampUs()); + } + } + return bufferedPositionUs; + } + } + + @Override + public long getNextLoadPositionUs() { + if (isPendingReset()) { + return pendingResetPositionUs; + } else { + return loadingFinished ? C.TIME_END_OF_SOURCE : getLastMediaChunk().endTimeUs; + } + } + + @Override + public boolean continueLoading(long positionUs) { + if (loadingFinished || loader.isLoading() || loader.hasFatalError()) { + return false; + } + + List chunkQueue; + long loadPositionUs; + if (isPendingReset()) { + chunkQueue = Collections.emptyList(); + loadPositionUs = pendingResetPositionUs; + } else { + chunkQueue = readOnlyMediaChunks; + HlsMediaChunk lastMediaChunk = getLastMediaChunk(); + loadPositionUs = + lastMediaChunk.isLoadCompleted() + ? lastMediaChunk.endTimeUs + : Math.max(lastSeekPositionUs, lastMediaChunk.startTimeUs); + } + chunkSource.getNextChunk( + positionUs, + loadPositionUs, + chunkQueue, + /* allowEndOfStream= */ prepared || !chunkQueue.isEmpty(), + nextChunkHolder); + boolean endOfStream = nextChunkHolder.endOfStream; + Chunk loadable = nextChunkHolder.chunk; + Uri playlistUrlToLoad = nextChunkHolder.playlistUrl; + nextChunkHolder.clear(); + + if (endOfStream) { + pendingResetPositionUs = C.TIME_UNSET; + loadingFinished = true; + return true; + } + + if (loadable == null) { + if (playlistUrlToLoad != null) { + callback.onPlaylistRefreshRequired(playlistUrlToLoad); + } + return false; + } + + if (isMediaChunk(loadable)) { + pendingResetPositionUs = C.TIME_UNSET; + HlsMediaChunk mediaChunk = (HlsMediaChunk) loadable; + mediaChunk.init(this); + mediaChunks.add(mediaChunk); + upstreamTrackFormat = mediaChunk.trackFormat; + } + long elapsedRealtimeMs = + loader.startLoading( + loadable, this, loadErrorHandlingPolicy.getMinimumLoadableRetryCount(loadable.type)); + eventDispatcher.loadStarted( + loadable.dataSpec, + loadable.type, + trackType, + loadable.trackFormat, + loadable.trackSelectionReason, + loadable.trackSelectionData, + loadable.startTimeUs, + loadable.endTimeUs, + elapsedRealtimeMs); + return true; + } + + @Override + public boolean isLoading() { + return loader.isLoading(); + } + + @Override + public void reevaluateBuffer(long positionUs) { + // Do nothing. + } + + // Loader.Callback implementation. + + @Override + public void onLoadCompleted(Chunk loadable, long elapsedRealtimeMs, long loadDurationMs) { + chunkSource.onChunkLoadCompleted(loadable); + eventDispatcher.loadCompleted( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + loadable.type, + trackType, + loadable.trackFormat, + loadable.trackSelectionReason, + loadable.trackSelectionData, + loadable.startTimeUs, + loadable.endTimeUs, + elapsedRealtimeMs, + loadDurationMs, + loadable.bytesLoaded()); + if (!prepared) { + continueLoading(lastSeekPositionUs); + } else { + callback.onContinueLoadingRequested(this); + } + } + + @Override + public void onLoadCanceled(Chunk loadable, long elapsedRealtimeMs, long loadDurationMs, + boolean released) { + eventDispatcher.loadCanceled( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + loadable.type, + trackType, + loadable.trackFormat, + loadable.trackSelectionReason, + loadable.trackSelectionData, + loadable.startTimeUs, + loadable.endTimeUs, + elapsedRealtimeMs, + loadDurationMs, + loadable.bytesLoaded()); + if (!released) { + resetSampleQueues(); + if (enabledTrackGroupCount > 0) { + callback.onContinueLoadingRequested(this); + } + } + } + + @Override + public LoadErrorAction onLoadError( + Chunk loadable, + long elapsedRealtimeMs, + long loadDurationMs, + IOException error, + int errorCount) { + long bytesLoaded = loadable.bytesLoaded(); + boolean isMediaChunk = isMediaChunk(loadable); + boolean blacklistSucceeded = false; + LoadErrorAction loadErrorAction; + + long blacklistDurationMs = + loadErrorHandlingPolicy.getBlacklistDurationMsFor( + loadable.type, loadDurationMs, error, errorCount); + if (blacklistDurationMs != C.TIME_UNSET) { + blacklistSucceeded = chunkSource.maybeBlacklistTrack(loadable, blacklistDurationMs); + } + + if (blacklistSucceeded) { + if (isMediaChunk && bytesLoaded == 0) { + HlsMediaChunk removed = mediaChunks.remove(mediaChunks.size() - 1); + Assertions.checkState(removed == loadable); + if (mediaChunks.isEmpty()) { + pendingResetPositionUs = lastSeekPositionUs; + } + } + loadErrorAction = Loader.DONT_RETRY; + } else /* did not blacklist */ { + long retryDelayMs = + loadErrorHandlingPolicy.getRetryDelayMsFor( + loadable.type, loadDurationMs, error, errorCount); + loadErrorAction = + retryDelayMs != C.TIME_UNSET + ? Loader.createRetryAction(/* resetErrorCount= */ false, retryDelayMs) + : Loader.DONT_RETRY_FATAL; + } + + eventDispatcher.loadError( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + loadable.type, + trackType, + loadable.trackFormat, + loadable.trackSelectionReason, + loadable.trackSelectionData, + loadable.startTimeUs, + loadable.endTimeUs, + elapsedRealtimeMs, + loadDurationMs, + bytesLoaded, + error, + /* wasCanceled= */ !loadErrorAction.isRetry()); + + if (blacklistSucceeded) { + if (!prepared) { + continueLoading(lastSeekPositionUs); + } else { + callback.onContinueLoadingRequested(this); + } + } + return loadErrorAction; + } + + // Called by the consuming thread, but only when there is no loading thread. + + /** + * Initializes the wrapper for loading a chunk. + * + * @param chunkUid The chunk's uid. + * @param shouldSpliceIn Whether the samples parsed from the chunk should be spliced into any + * samples already queued to the wrapper. + */ + public void init(int chunkUid, boolean shouldSpliceIn) { + this.chunkUid = chunkUid; + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.sourceId(chunkUid); + } + if (shouldSpliceIn) { + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.splice(); + } + } + } + + // ExtractorOutput implementation. Called by the loading thread. + + @Override + public TrackOutput track(int id, int type) { + @Nullable TrackOutput trackOutput = null; + if (MAPPABLE_TYPES.contains(type)) { + // Track types in MAPPABLE_TYPES are handled manually to ignore IDs. + trackOutput = getMappedTrackOutput(id, type); + } else /* non-mappable type track */ { + for (int i = 0; i < sampleQueues.length; i++) { + if (sampleQueueTrackIds[i] == id) { + trackOutput = sampleQueues[i]; + break; + } + } + } + + if (trackOutput == null) { + if (tracksEnded) { + return createDummyTrackOutput(id, type); + } else { + // The relevant SampleQueue hasn't been constructed yet - so construct it. + trackOutput = createSampleQueue(id, type); + } + } + + if (type == C.TRACK_TYPE_METADATA) { + if (emsgUnwrappingTrackOutput == null) { + emsgUnwrappingTrackOutput = new EmsgUnwrappingTrackOutput(trackOutput, metadataType); + } + return emsgUnwrappingTrackOutput; + } + return trackOutput; + } + + /** + * Returns the {@link TrackOutput} for the provided {@code type} and {@code id}, or null if none + * has been created yet. + * + *

If a {@link SampleQueue} for {@code type} has been created and is mapped, but it has a + * different ID, then return a {@link DummyTrackOutput} that does nothing. + * + *

If a {@link SampleQueue} for {@code type} has been created but is not mapped, then map it to + * this {@code id} and return it. This situation can happen after a call to {@link + * #onNewExtractor}. + * + * @param id The ID of the track. + * @param type The type of the track, must be one of {@link #MAPPABLE_TYPES}. + * @return The the mapped {@link TrackOutput}, or null if it's not been created yet. + */ + @Nullable + private TrackOutput getMappedTrackOutput(int id, int type) { + Assertions.checkArgument(MAPPABLE_TYPES.contains(type)); + int sampleQueueIndex = sampleQueueIndicesByType.get(type, C.INDEX_UNSET); + if (sampleQueueIndex == C.INDEX_UNSET) { + return null; + } + + if (sampleQueueMappingDoneByType.add(type)) { + sampleQueueTrackIds[sampleQueueIndex] = id; + } + return sampleQueueTrackIds[sampleQueueIndex] == id + ? sampleQueues[sampleQueueIndex] + : createDummyTrackOutput(id, type); + } + + private SampleQueue createSampleQueue(int id, int type) { + int trackCount = sampleQueues.length; + + boolean isAudioVideo = type == C.TRACK_TYPE_AUDIO || type == C.TRACK_TYPE_VIDEO; + FormatAdjustingSampleQueue trackOutput = + new FormatAdjustingSampleQueue(allocator, drmSessionManager, overridingDrmInitData); + if (isAudioVideo) { + trackOutput.setDrmInitData(drmInitData); + } + trackOutput.setSampleOffsetUs(sampleOffsetUs); + trackOutput.sourceId(chunkUid); + trackOutput.setUpstreamFormatChangeListener(this); + sampleQueueTrackIds = Arrays.copyOf(sampleQueueTrackIds, trackCount + 1); + sampleQueueTrackIds[trackCount] = id; + sampleQueues = Util.nullSafeArrayAppend(sampleQueues, trackOutput); + sampleQueueIsAudioVideoFlags = Arrays.copyOf(sampleQueueIsAudioVideoFlags, trackCount + 1); + sampleQueueIsAudioVideoFlags[trackCount] = isAudioVideo; + haveAudioVideoSampleQueues |= sampleQueueIsAudioVideoFlags[trackCount]; + sampleQueueMappingDoneByType.add(type); + sampleQueueIndicesByType.append(type, trackCount); + if (getTrackTypeScore(type) > getTrackTypeScore(primarySampleQueueType)) { + primarySampleQueueIndex = trackCount; + primarySampleQueueType = type; + } + sampleQueuesEnabledStates = Arrays.copyOf(sampleQueuesEnabledStates, trackCount + 1); + return trackOutput; + } + + @Override + public void endTracks() { + tracksEnded = true; + handler.post(onTracksEndedRunnable); + } + + @Override + public void seekMap(SeekMap seekMap) { + // Do nothing. + } + + // UpstreamFormatChangedListener implementation. Called by the loading thread. + + @Override + public void onUpstreamFormatChanged(Format format) { + handler.post(maybeFinishPrepareRunnable); + } + + // Called by the loading thread. + + /** Called when an {@link HlsMediaChunk} starts extracting media with a new {@link Extractor}. */ + public void onNewExtractor() { + sampleQueueMappingDoneByType.clear(); + } + + /** + * Sets an offset that will be added to the timestamps (and sub-sample timestamps) of samples that + * are subsequently loaded by this wrapper. + * + * @param sampleOffsetUs The timestamp offset in microseconds. + */ + public void setSampleOffsetUs(long sampleOffsetUs) { + if (this.sampleOffsetUs != sampleOffsetUs) { + this.sampleOffsetUs = sampleOffsetUs; + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.setSampleOffsetUs(sampleOffsetUs); + } + } + } + + /** + * Sets default {@link DrmInitData} for samples that are subsequently loaded by this wrapper. + * + *

This method should be called prior to loading each {@link HlsMediaChunk}. The {@link + * DrmInitData} passed should be that of an EXT-X-KEY tag that applies to the chunk, or {@code + * null} otherwise. + * + *

The final {@link DrmInitData} for subsequently queued samples is determined as followed: + * + *

    + *
  1. It is initially set to {@code drmInitData}, unless {@code drmInitData} is null in which + * case it's set to {@link Format#drmInitData} of the upstream {@link Format}. + *
  2. If the initial {@link DrmInitData} is non-null and {@link #overridingDrmInitData} + * contains an entry whose key matches the {@link DrmInitData#schemeType}, then the sample's + * {@link DrmInitData} is overridden to be this entry's value. + *
+ * + *

+ * + * @param drmInitData The default {@link DrmInitData} for samples that are subsequently queued. If + * non-null then it takes precedence over {@link Format#drmInitData} of the upstream {@link + * Format}, but will still be overridden by a matching override in {@link + * #overridingDrmInitData}. + */ + public void setDrmInitData(@Nullable DrmInitData drmInitData) { + if (!Util.areEqual(this.drmInitData, drmInitData)) { + this.drmInitData = drmInitData; + for (int i = 0; i < sampleQueues.length; i++) { + if (sampleQueueIsAudioVideoFlags[i]) { + sampleQueues[i].setDrmInitData(drmInitData); + } + } + } + } + + // Internal methods. + + private void updateSampleStreams(@NullableType SampleStream[] streams) { + hlsSampleStreams.clear(); + for (SampleStream stream : streams) { + if (stream != null) { + hlsSampleStreams.add((HlsSampleStream) stream); + } + } + } + + private boolean finishedReadingChunk(HlsMediaChunk chunk) { + int chunkUid = chunk.uid; + int sampleQueueCount = sampleQueues.length; + for (int i = 0; i < sampleQueueCount; i++) { + if (sampleQueuesEnabledStates[i] && sampleQueues[i].peekSourceId() == chunkUid) { + return false; + } + } + return true; + } + + private void resetSampleQueues() { + for (SampleQueue sampleQueue : sampleQueues) { + sampleQueue.reset(pendingResetUpstreamFormats); + } + pendingResetUpstreamFormats = false; + } + + private void onTracksEnded() { + sampleQueuesBuilt = true; + maybeFinishPrepare(); + } + + private void maybeFinishPrepare() { + if (released || trackGroupToSampleQueueIndex != null || !sampleQueuesBuilt) { + return; + } + for (SampleQueue sampleQueue : sampleQueues) { + if (sampleQueue.getUpstreamFormat() == null) { + return; + } + } + if (trackGroups != null) { + // The track groups were created with master playlist information. They only need to be mapped + // to a sample queue. + mapSampleQueuesToMatchTrackGroups(); + } else { + // Tracks are created using media segment information. + buildTracksFromSampleStreams(); + setIsPrepared(); + callback.onPrepared(); + } + } + + @RequiresNonNull("trackGroups") + @EnsuresNonNull("trackGroupToSampleQueueIndex") + private void mapSampleQueuesToMatchTrackGroups() { + int trackGroupCount = trackGroups.length; + trackGroupToSampleQueueIndex = new int[trackGroupCount]; + Arrays.fill(trackGroupToSampleQueueIndex, C.INDEX_UNSET); + for (int i = 0; i < trackGroupCount; i++) { + for (int queueIndex = 0; queueIndex < sampleQueues.length; queueIndex++) { + SampleQueue sampleQueue = sampleQueues[queueIndex]; + if (formatsMatch(sampleQueue.getUpstreamFormat(), trackGroups.get(i).getFormat(0))) { + trackGroupToSampleQueueIndex[i] = queueIndex; + break; + } + } + } + for (HlsSampleStream sampleStream : hlsSampleStreams) { + sampleStream.bindSampleQueue(); + } + } + + /** + * Builds tracks that are exposed by this {@link HlsSampleStreamWrapper} instance, as well as + * internal data-structures required for operation. + * + *

Tracks in HLS are complicated. A HLS master playlist contains a number of "variants". Each + * variant stream typically contains muxed video, audio and (possibly) additional audio, metadata + * and caption tracks. We wish to allow the user to select between an adaptive track that spans + * all variants, as well as each individual variant. If multiple audio tracks are present within + * each variant then we wish to allow the user to select between those also. + * + *

To do this, tracks are constructed as follows. The {@link HlsChunkSource} exposes (N+1) + * tracks, where N is the number of variants defined in the HLS master playlist. These consist of + * one adaptive track defined to span all variants and a track for each individual variant. The + * adaptive track is initially selected. The extractor is then prepared to discover the tracks + * inside of each variant stream. The two sets of tracks are then combined by this method to + * create a third set, which is the set exposed by this {@link HlsSampleStreamWrapper}: + * + *

    + *
  • The extractor tracks are inspected to infer a "primary" track type. If a video track is + * present then it is always the primary type. If not, audio is the primary type if present. + * Else text is the primary type if present. Else there is no primary type. + *
  • If there is exactly one extractor track of the primary type, it's expanded into (N+1) + * exposed tracks, all of which correspond to the primary extractor track and each of which + * corresponds to a different chunk source track. Selecting one of these tracks has the + * effect of switching the selected track on the chunk source. + *
  • All other extractor tracks are exposed directly. Selecting one of these tracks has the + * effect of selecting an extractor track, leaving the selected track on the chunk source + * unchanged. + *
+ */ + @EnsuresNonNull({"trackGroups", "optionalTrackGroups", "trackGroupToSampleQueueIndex"}) + private void buildTracksFromSampleStreams() { + // Iterate through the extractor tracks to discover the "primary" track type, and the index + // of the single track of this type. + int primaryExtractorTrackType = C.TRACK_TYPE_NONE; + int primaryExtractorTrackIndex = C.INDEX_UNSET; + int extractorTrackCount = sampleQueues.length; + for (int i = 0; i < extractorTrackCount; i++) { + String sampleMimeType = sampleQueues[i].getUpstreamFormat().sampleMimeType; + int trackType; + if (MimeTypes.isVideo(sampleMimeType)) { + trackType = C.TRACK_TYPE_VIDEO; + } else if (MimeTypes.isAudio(sampleMimeType)) { + trackType = C.TRACK_TYPE_AUDIO; + } else if (MimeTypes.isText(sampleMimeType)) { + trackType = C.TRACK_TYPE_TEXT; + } else { + trackType = C.TRACK_TYPE_NONE; + } + if (getTrackTypeScore(trackType) > getTrackTypeScore(primaryExtractorTrackType)) { + primaryExtractorTrackType = trackType; + primaryExtractorTrackIndex = i; + } else if (trackType == primaryExtractorTrackType + && primaryExtractorTrackIndex != C.INDEX_UNSET) { + // We have multiple tracks of the primary type. We only want an index if there only exists a + // single track of the primary type, so unset the index again. + primaryExtractorTrackIndex = C.INDEX_UNSET; + } + } + + TrackGroup chunkSourceTrackGroup = chunkSource.getTrackGroup(); + int chunkSourceTrackCount = chunkSourceTrackGroup.length; + + // Instantiate the necessary internal data-structures. + primaryTrackGroupIndex = C.INDEX_UNSET; + trackGroupToSampleQueueIndex = new int[extractorTrackCount]; + for (int i = 0; i < extractorTrackCount; i++) { + trackGroupToSampleQueueIndex[i] = i; + } + + // Construct the set of exposed track groups. + TrackGroup[] trackGroups = new TrackGroup[extractorTrackCount]; + for (int i = 0; i < extractorTrackCount; i++) { + Format sampleFormat = sampleQueues[i].getUpstreamFormat(); + if (i == primaryExtractorTrackIndex) { + Format[] formats = new Format[chunkSourceTrackCount]; + if (chunkSourceTrackCount == 1) { + formats[0] = sampleFormat.copyWithManifestFormatInfo(chunkSourceTrackGroup.getFormat(0)); + } else { + for (int j = 0; j < chunkSourceTrackCount; j++) { + formats[j] = deriveFormat(chunkSourceTrackGroup.getFormat(j), sampleFormat, true); + } + } + trackGroups[i] = new TrackGroup(formats); + primaryTrackGroupIndex = i; + } else { + Format trackFormat = + primaryExtractorTrackType == C.TRACK_TYPE_VIDEO + && MimeTypes.isAudio(sampleFormat.sampleMimeType) + ? muxedAudioFormat + : null; + trackGroups[i] = new TrackGroup(deriveFormat(trackFormat, sampleFormat, false)); + } + } + this.trackGroups = createTrackGroupArrayWithDrmInfo(trackGroups); + Assertions.checkState(optionalTrackGroups == null); + optionalTrackGroups = Collections.emptySet(); + } + + private TrackGroupArray createTrackGroupArrayWithDrmInfo(TrackGroup[] trackGroups) { + for (int i = 0; i < trackGroups.length; i++) { + TrackGroup trackGroup = trackGroups[i]; + Format[] exposedFormats = new Format[trackGroup.length]; + for (int j = 0; j < trackGroup.length; j++) { + Format format = trackGroup.getFormat(j); + if (format.drmInitData != null) { + format = + format.copyWithExoMediaCryptoType( + drmSessionManager.getExoMediaCryptoType(format.drmInitData)); + } + exposedFormats[j] = format; + } + trackGroups[i] = new TrackGroup(exposedFormats); + } + return new TrackGroupArray(trackGroups); + } + + private HlsMediaChunk getLastMediaChunk() { + return mediaChunks.get(mediaChunks.size() - 1); + } + + private boolean isPendingReset() { + return pendingResetPositionUs != C.TIME_UNSET; + } + + /** + * Attempts to seek to the specified position within the sample queues. + * + * @param positionUs The seek position in microseconds. + * @return Whether the in-buffer seek was successful. + */ + private boolean seekInsideBufferUs(long positionUs) { + int sampleQueueCount = sampleQueues.length; + for (int i = 0; i < sampleQueueCount; i++) { + SampleQueue sampleQueue = sampleQueues[i]; + boolean seekInsideQueue = sampleQueue.seekTo(positionUs, /* allowTimeBeyondBuffer= */ false); + // If we have AV tracks then an in-queue seek is successful if the seek into every AV queue + // is successful. We ignore whether seeks within non-AV queues are successful in this case, as + // they may be sparse or poorly interleaved. If we only have non-AV tracks then a seek is + // successful only if the seek into every queue succeeds. + if (!seekInsideQueue && (sampleQueueIsAudioVideoFlags[i] || !haveAudioVideoSampleQueues)) { + return false; + } + } + return true; + } + + @RequiresNonNull({"trackGroups", "optionalTrackGroups"}) + private void setIsPrepared() { + prepared = true; + } + + @EnsuresNonNull({"trackGroups", "optionalTrackGroups"}) + private void assertIsPrepared() { + Assertions.checkState(prepared); + Assertions.checkNotNull(trackGroups); + Assertions.checkNotNull(optionalTrackGroups); + } + + /** + * Scores a track type. Where multiple tracks are muxed into a container, the track with the + * highest score is the primary track. + * + * @param trackType The track type. + * @return The score. + */ + private static int getTrackTypeScore(int trackType) { + switch (trackType) { + case C.TRACK_TYPE_VIDEO: + return 3; + case C.TRACK_TYPE_AUDIO: + return 2; + case C.TRACK_TYPE_TEXT: + return 1; + default: + return 0; + } + } + + /** + * Derives a track sample format from the corresponding format in the master playlist, and a + * sample format that may have been obtained from a chunk belonging to a different track. + * + * @param playlistFormat The format information obtained from the master playlist. + * @param sampleFormat The format information obtained from the samples. + * @param propagateBitrate Whether the bitrate from the playlist format should be included in the + * derived format. + * @return The derived track format. + */ + private static Format deriveFormat( + @Nullable Format playlistFormat, Format sampleFormat, boolean propagateBitrate) { + if (playlistFormat == null) { + return sampleFormat; + } + int bitrate = propagateBitrate ? playlistFormat.bitrate : Format.NO_VALUE; + int channelCount = + playlistFormat.channelCount != Format.NO_VALUE + ? playlistFormat.channelCount + : sampleFormat.channelCount; + int sampleTrackType = MimeTypes.getTrackType(sampleFormat.sampleMimeType); + String codecs = Util.getCodecsOfType(playlistFormat.codecs, sampleTrackType); + String mimeType = MimeTypes.getMediaMimeType(codecs); + if (mimeType == null) { + mimeType = sampleFormat.sampleMimeType; + } + return sampleFormat.copyWithContainerInfo( + playlistFormat.id, + playlistFormat.label, + mimeType, + codecs, + playlistFormat.metadata, + bitrate, + playlistFormat.width, + playlistFormat.height, + channelCount, + playlistFormat.selectionFlags, + playlistFormat.language); + } + + private static boolean isMediaChunk(Chunk chunk) { + return chunk instanceof HlsMediaChunk; + } + + private static boolean formatsMatch(Format manifestFormat, Format sampleFormat) { + String manifestFormatMimeType = manifestFormat.sampleMimeType; + String sampleFormatMimeType = sampleFormat.sampleMimeType; + int manifestFormatTrackType = MimeTypes.getTrackType(manifestFormatMimeType); + if (manifestFormatTrackType != C.TRACK_TYPE_TEXT) { + return manifestFormatTrackType == MimeTypes.getTrackType(sampleFormatMimeType); + } else if (!Util.areEqual(manifestFormatMimeType, sampleFormatMimeType)) { + return false; + } + if (MimeTypes.APPLICATION_CEA608.equals(manifestFormatMimeType) + || MimeTypes.APPLICATION_CEA708.equals(manifestFormatMimeType)) { + return manifestFormat.accessibilityChannel == sampleFormat.accessibilityChannel; + } + return true; + } + + private static DummyTrackOutput createDummyTrackOutput(int id, int type) { + Log.w(TAG, "Unmapped track with id " + id + " of type " + type); + return new DummyTrackOutput(); + } + + private static final class FormatAdjustingSampleQueue extends SampleQueue { + + private final Map overridingDrmInitData; + @Nullable private DrmInitData drmInitData; + + public FormatAdjustingSampleQueue( + Allocator allocator, + DrmSessionManager drmSessionManager, + Map overridingDrmInitData) { + super(allocator, drmSessionManager); + this.overridingDrmInitData = overridingDrmInitData; + } + + public void setDrmInitData(@Nullable DrmInitData drmInitData) { + this.drmInitData = drmInitData; + invalidateUpstreamFormatAdjustment(); + } + + @Override + public Format getAdjustedUpstreamFormat(Format format) { + @Nullable + DrmInitData drmInitData = this.drmInitData != null ? this.drmInitData : format.drmInitData; + if (drmInitData != null) { + @Nullable + DrmInitData overridingDrmInitData = this.overridingDrmInitData.get(drmInitData.schemeType); + if (overridingDrmInitData != null) { + drmInitData = overridingDrmInitData; + } + } + return super.getAdjustedUpstreamFormat( + format.copyWithAdjustments(drmInitData, getAdjustedMetadata(format.metadata))); + } + + /** + * Strips the private timestamp frame from metadata, if present. See: + * https://github.com/google/ExoPlayer/issues/5063 + */ + @Nullable + private Metadata getAdjustedMetadata(@Nullable Metadata metadata) { + if (metadata == null) { + return null; + } + int length = metadata.length(); + int transportStreamTimestampMetadataIndex = C.INDEX_UNSET; + for (int i = 0; i < length; i++) { + Metadata.Entry metadataEntry = metadata.get(i); + if (metadataEntry instanceof PrivFrame) { + PrivFrame privFrame = (PrivFrame) metadataEntry; + if (HlsMediaChunk.PRIV_TIMESTAMP_FRAME_OWNER.equals(privFrame.owner)) { + transportStreamTimestampMetadataIndex = i; + break; + } + } + } + if (transportStreamTimestampMetadataIndex == C.INDEX_UNSET) { + return metadata; + } + if (length == 1) { + return null; + } + Metadata.Entry[] newMetadataEntries = new Metadata.Entry[length - 1]; + for (int i = 0; i < length; i++) { + if (i != transportStreamTimestampMetadataIndex) { + int newIndex = i < transportStreamTimestampMetadataIndex ? i : i - 1; + newMetadataEntries[newIndex] = metadata.get(i); + } + } + return new Metadata(newMetadataEntries); + } + } + + private static class EmsgUnwrappingTrackOutput implements TrackOutput { + + private static final String TAG = "EmsgUnwrappingTrackOutput"; + + // TODO(ibaker): Create a Formats util class with common constants like this. + private static final Format ID3_FORMAT = + Format.createSampleFormat( + /* id= */ null, MimeTypes.APPLICATION_ID3, Format.OFFSET_SAMPLE_RELATIVE); + private static final Format EMSG_FORMAT = + Format.createSampleFormat( + /* id= */ null, MimeTypes.APPLICATION_EMSG, Format.OFFSET_SAMPLE_RELATIVE); + + private final EventMessageDecoder emsgDecoder; + private final TrackOutput delegate; + private final Format delegateFormat; + @MonotonicNonNull private Format format; + + private byte[] buffer; + private int bufferPosition; + + public EmsgUnwrappingTrackOutput( + TrackOutput delegate, @HlsMediaSource.MetadataType int metadataType) { + this.emsgDecoder = new EventMessageDecoder(); + this.delegate = delegate; + switch (metadataType) { + case HlsMediaSource.METADATA_TYPE_ID3: + delegateFormat = ID3_FORMAT; + break; + case HlsMediaSource.METADATA_TYPE_EMSG: + delegateFormat = EMSG_FORMAT; + break; + default: + throw new IllegalArgumentException("Unknown metadataType: " + metadataType); + } + + this.buffer = new byte[0]; + this.bufferPosition = 0; + } + + @Override + public void format(Format format) { + this.format = format; + delegate.format(delegateFormat); + } + + @Override + public int sampleData(ExtractorInput input, int length, boolean allowEndOfInput) + throws IOException, InterruptedException { + ensureBufferCapacity(bufferPosition + length); + int numBytesRead = input.read(buffer, bufferPosition, length); + if (numBytesRead == C.RESULT_END_OF_INPUT) { + if (allowEndOfInput) { + return C.RESULT_END_OF_INPUT; + } else { + throw new EOFException(); + } + } + bufferPosition += numBytesRead; + return numBytesRead; + } + + @Override + public void sampleData(ParsableByteArray buffer, int length) { + ensureBufferCapacity(bufferPosition + length); + buffer.readBytes(this.buffer, bufferPosition, length); + bufferPosition += length; + } + + @Override + public void sampleMetadata( + long timeUs, + @C.BufferFlags int flags, + int size, + int offset, + @Nullable CryptoData cryptoData) { + Assertions.checkNotNull(format); + ParsableByteArray sample = getSampleAndTrimBuffer(size, offset); + ParsableByteArray sampleForDelegate; + if (Util.areEqual(format.sampleMimeType, delegateFormat.sampleMimeType)) { + // Incoming format matches delegate track's format, so pass straight through. + sampleForDelegate = sample; + } else if (MimeTypes.APPLICATION_EMSG.equals(format.sampleMimeType)) { + // Incoming sample is EMSG, and delegate track is not expecting EMSG, so try unwrapping. + EventMessage emsg = emsgDecoder.decode(sample); + if (!emsgContainsExpectedWrappedFormat(emsg)) { + Log.w( + TAG, + String.format( + "Ignoring EMSG. Expected it to contain wrapped %s but actual wrapped format: %s", + delegateFormat.sampleMimeType, emsg.getWrappedMetadataFormat())); + return; + } + sampleForDelegate = + new ParsableByteArray(Assertions.checkNotNull(emsg.getWrappedMetadataBytes())); + } else { + Log.w(TAG, "Ignoring sample for unsupported format: " + format.sampleMimeType); + return; + } + + int sampleSize = sampleForDelegate.bytesLeft(); + + delegate.sampleData(sampleForDelegate, sampleSize); + delegate.sampleMetadata(timeUs, flags, sampleSize, offset, cryptoData); + } + + private boolean emsgContainsExpectedWrappedFormat(EventMessage emsg) { + @Nullable Format wrappedMetadataFormat = emsg.getWrappedMetadataFormat(); + return wrappedMetadataFormat != null + && Util.areEqual(delegateFormat.sampleMimeType, wrappedMetadataFormat.sampleMimeType); + } + + private void ensureBufferCapacity(int requiredLength) { + if (buffer.length < requiredLength) { + buffer = Arrays.copyOf(buffer, requiredLength + requiredLength / 2); + } + } + + /** + * Removes a complete sample from the {@link #buffer} field & reshuffles the tail data skipped + * by {@code offset} to the head of the array. + * + * @param size see {@code size} param of {@link #sampleMetadata}. + * @param offset see {@code offset} param of {@link #sampleMetadata}. + * @return A {@link ParsableByteArray} containing the sample removed from {@link #buffer}. + */ + private ParsableByteArray getSampleAndTrimBuffer(int size, int offset) { + int sampleEnd = bufferPosition - offset; + int sampleStart = sampleEnd - size; + + byte[] sampleBytes = Arrays.copyOfRange(buffer, sampleStart, sampleEnd); + ParsableByteArray sample = new ParsableByteArray(sampleBytes); + + System.arraycopy(buffer, sampleEnd, buffer, 0, offset); + bufferPosition = offset; + return sample; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsTrackMetadataEntry.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsTrackMetadataEntry.java new file mode 100644 index 0000000000..681fe57240 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/HlsTrackMetadataEntry.java @@ -0,0 +1,245 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.os.Parcel; +import android.os.Parcelable; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** Holds metadata associated to an HLS media track. */ +public final class HlsTrackMetadataEntry implements Metadata.Entry { + + /** Holds attributes defined in an EXT-X-STREAM-INF tag. */ + public static final class VariantInfo implements Parcelable { + + /** The bitrate as declared by the EXT-X-STREAM-INF tag. */ + public final long bitrate; + + /** + * The VIDEO value as defined in the EXT-X-STREAM-INF tag, or null if the VIDEO attribute is not + * present. + */ + @Nullable public final String videoGroupId; + + /** + * The AUDIO value as defined in the EXT-X-STREAM-INF tag, or null if the AUDIO attribute is not + * present. + */ + @Nullable public final String audioGroupId; + + /** + * The SUBTITLES value as defined in the EXT-X-STREAM-INF tag, or null if the SUBTITLES + * attribute is not present. + */ + @Nullable public final String subtitleGroupId; + + /** + * The CLOSED-CAPTIONS value as defined in the EXT-X-STREAM-INF tag, or null if the + * CLOSED-CAPTIONS attribute is not present. + */ + @Nullable public final String captionGroupId; + + /** + * Creates an instance. + * + * @param bitrate See {@link #bitrate}. + * @param videoGroupId See {@link #videoGroupId}. + * @param audioGroupId See {@link #audioGroupId}. + * @param subtitleGroupId See {@link #subtitleGroupId}. + * @param captionGroupId See {@link #captionGroupId}. + */ + public VariantInfo( + long bitrate, + @Nullable String videoGroupId, + @Nullable String audioGroupId, + @Nullable String subtitleGroupId, + @Nullable String captionGroupId) { + this.bitrate = bitrate; + this.videoGroupId = videoGroupId; + this.audioGroupId = audioGroupId; + this.subtitleGroupId = subtitleGroupId; + this.captionGroupId = captionGroupId; + } + + /* package */ VariantInfo(Parcel in) { + bitrate = in.readLong(); + videoGroupId = in.readString(); + audioGroupId = in.readString(); + subtitleGroupId = in.readString(); + captionGroupId = in.readString(); + } + + @Override + public boolean equals(@Nullable Object other) { + if (this == other) { + return true; + } + if (other == null || getClass() != other.getClass()) { + return false; + } + VariantInfo that = (VariantInfo) other; + return bitrate == that.bitrate + && TextUtils.equals(videoGroupId, that.videoGroupId) + && TextUtils.equals(audioGroupId, that.audioGroupId) + && TextUtils.equals(subtitleGroupId, that.subtitleGroupId) + && TextUtils.equals(captionGroupId, that.captionGroupId); + } + + @Override + public int hashCode() { + int result = (int) (bitrate ^ (bitrate >>> 32)); + result = 31 * result + (videoGroupId != null ? videoGroupId.hashCode() : 0); + result = 31 * result + (audioGroupId != null ? audioGroupId.hashCode() : 0); + result = 31 * result + (subtitleGroupId != null ? subtitleGroupId.hashCode() : 0); + result = 31 * result + (captionGroupId != null ? captionGroupId.hashCode() : 0); + return result; + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeLong(bitrate); + dest.writeString(videoGroupId); + dest.writeString(audioGroupId); + dest.writeString(subtitleGroupId); + dest.writeString(captionGroupId); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + @Override + public VariantInfo createFromParcel(Parcel in) { + return new VariantInfo(in); + } + + @Override + public VariantInfo[] newArray(int size) { + return new VariantInfo[size]; + } + }; + } + + /** + * The GROUP-ID value of this track, if the track is derived from an EXT-X-MEDIA tag. Null if the + * track is not derived from an EXT-X-MEDIA TAG. + */ + @Nullable public final String groupId; + /** + * The NAME value of this track, if the track is derived from an EXT-X-MEDIA tag. Null if the + * track is not derived from an EXT-X-MEDIA TAG. + */ + @Nullable public final String name; + /** + * The EXT-X-STREAM-INF tags attributes associated with this track. This field is non-applicable + * (and therefore empty) if this track is derived from an EXT-X-MEDIA tag. + */ + public final List variantInfos; + + /** + * Creates an instance. + * + * @param groupId See {@link #groupId}. + * @param name See {@link #name}. + * @param variantInfos See {@link #variantInfos}. + */ + public HlsTrackMetadataEntry( + @Nullable String groupId, @Nullable String name, List variantInfos) { + this.groupId = groupId; + this.name = name; + this.variantInfos = Collections.unmodifiableList(new ArrayList<>(variantInfos)); + } + + /* package */ HlsTrackMetadataEntry(Parcel in) { + groupId = in.readString(); + name = in.readString(); + int variantInfoSize = in.readInt(); + ArrayList variantInfos = new ArrayList<>(variantInfoSize); + for (int i = 0; i < variantInfoSize; i++) { + variantInfos.add(in.readParcelable(VariantInfo.class.getClassLoader())); + } + this.variantInfos = Collections.unmodifiableList(variantInfos); + } + + @Override + public String toString() { + return "HlsTrackMetadataEntry" + (groupId != null ? (" [" + groupId + ", " + name + "]") : ""); + } + + @Override + public boolean equals(@Nullable Object other) { + if (this == other) { + return true; + } + if (other == null || getClass() != other.getClass()) { + return false; + } + + HlsTrackMetadataEntry that = (HlsTrackMetadataEntry) other; + return TextUtils.equals(groupId, that.groupId) + && TextUtils.equals(name, that.name) + && variantInfos.equals(that.variantInfos); + } + + @Override + public int hashCode() { + int result = groupId != null ? groupId.hashCode() : 0; + result = 31 * result + (name != null ? name.hashCode() : 0); + result = 31 * result + variantInfos.hashCode(); + return result; + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(groupId); + dest.writeString(name); + int variantInfosSize = variantInfos.size(); + dest.writeInt(variantInfosSize); + for (int i = 0; i < variantInfosSize; i++) { + dest.writeParcelable(variantInfos.get(i), /* parcelableFlags= */ 0); + } + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + @Override + public HlsTrackMetadataEntry createFromParcel(Parcel in) { + return new HlsTrackMetadataEntry(in); + } + + @Override + public HlsTrackMetadataEntry[] newArray(int size) { + return new HlsTrackMetadataEntry[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/SampleQueueMappingException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/SampleQueueMappingException.java new file mode 100644 index 0000000000..a67a92b4b7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/SampleQueueMappingException.java @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.SampleQueue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import java.io.IOException; + +/** Thrown when it is not possible to map a {@link TrackGroup} to a {@link SampleQueue}. */ +public final class SampleQueueMappingException extends IOException { + + /** @param mimeType The mime type of the track group whose mapping failed. */ + public SampleQueueMappingException(@Nullable String mimeType) { + super("Unable to bind a sample queue to TrackGroup with mime type " + mimeType + "."); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/TimestampAdjusterProvider.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/TimestampAdjusterProvider.java new file mode 100644 index 0000000000..e2a652d05c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/TimestampAdjusterProvider.java @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.util.SparseArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; + +/** + * Provides {@link TimestampAdjuster} instances for use during HLS playbacks. + */ +public final class TimestampAdjusterProvider { + + // TODO: Prevent this array from growing indefinitely large by removing adjusters that are no + // longer required. + private final SparseArray timestampAdjusters; + + public TimestampAdjusterProvider() { + timestampAdjusters = new SparseArray<>(); + } + + /** + * Returns a {@link TimestampAdjuster} suitable for adjusting the pts timestamps contained in + * a chunk with a given discontinuity sequence. + * + * @param discontinuitySequence The chunk's discontinuity sequence. + * @return A {@link TimestampAdjuster}. + */ + public TimestampAdjuster getAdjuster(int discontinuitySequence) { + TimestampAdjuster adjuster = timestampAdjusters.get(discontinuitySequence); + if (adjuster == null) { + adjuster = new TimestampAdjuster(TimestampAdjuster.DO_NOT_OFFSET); + timestampAdjusters.put(discontinuitySequence, adjuster); + } + return adjuster; + } + + /** + * Resets the provider. + */ + public void reset() { + timestampAdjusters.clear(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/WebvttExtractor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/WebvttExtractor.java new file mode 100644 index 0000000000..1d5e669a03 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/WebvttExtractor.java @@ -0,0 +1,195 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.Extractor; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorInput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ExtractorOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.PositionHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.SeekMap; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt.WebvttParserUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimestampAdjuster; +import java.io.IOException; +import java.util.Arrays; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; +import org.checkerframework.checker.nullness.qual.RequiresNonNull; + +/** + * A special purpose extractor for WebVTT content in HLS. + * + *

This extractor passes through non-empty WebVTT files untouched, however derives the correct + * sample timestamp for each by sniffing the X-TIMESTAMP-MAP header along with the start timestamp + * of the first cue header. Empty WebVTT files are not passed through, since it's not possible to + * derive a sample timestamp in this case. + */ +public final class WebvttExtractor implements Extractor { + + private static final Pattern LOCAL_TIMESTAMP = Pattern.compile("LOCAL:([^,]+)"); + private static final Pattern MEDIA_TIMESTAMP = Pattern.compile("MPEGTS:(-?\\d+)"); + private static final int HEADER_MIN_LENGTH = 6 /* "WEBVTT" */; + private static final int HEADER_MAX_LENGTH = 3 /* optional Byte Order Mark */ + HEADER_MIN_LENGTH; + + @Nullable private final String language; + private final TimestampAdjuster timestampAdjuster; + private final ParsableByteArray sampleDataWrapper; + + private @MonotonicNonNull ExtractorOutput output; + + private byte[] sampleData; + private int sampleSize; + + public WebvttExtractor(@Nullable String language, TimestampAdjuster timestampAdjuster) { + this.language = language; + this.timestampAdjuster = timestampAdjuster; + this.sampleDataWrapper = new ParsableByteArray(); + sampleData = new byte[1024]; + } + + // Extractor implementation. + + @Override + public boolean sniff(ExtractorInput input) throws IOException, InterruptedException { + // Check whether there is a header without BOM. + input.peekFully( + sampleData, /* offset= */ 0, /* length= */ HEADER_MIN_LENGTH, /* allowEndOfInput= */ false); + sampleDataWrapper.reset(sampleData, HEADER_MIN_LENGTH); + if (WebvttParserUtil.isWebvttHeaderLine(sampleDataWrapper)) { + return true; + } + // The header did not match, try including the BOM. + input.peekFully( + sampleData, + /* offset= */ HEADER_MIN_LENGTH, + HEADER_MAX_LENGTH - HEADER_MIN_LENGTH, + /* allowEndOfInput= */ false); + sampleDataWrapper.reset(sampleData, HEADER_MAX_LENGTH); + return WebvttParserUtil.isWebvttHeaderLine(sampleDataWrapper); + } + + @Override + public void init(ExtractorOutput output) { + this.output = output; + output.seekMap(new SeekMap.Unseekable(C.TIME_UNSET)); + } + + @Override + public void seek(long position, long timeUs) { + // This extractor is only used for the HLS use case, which should not call this method. + throw new IllegalStateException(); + } + + @Override + public void release() { + // Do nothing + } + + @Override + public int read(ExtractorInput input, PositionHolder seekPosition) + throws IOException, InterruptedException { + // output == null suggests init() hasn't been called + Assertions.checkNotNull(output); + int currentFileSize = (int) input.getLength(); + + // Increase the size of sampleData if necessary. + if (sampleSize == sampleData.length) { + sampleData = Arrays.copyOf(sampleData, + (currentFileSize != C.LENGTH_UNSET ? currentFileSize : sampleData.length) * 3 / 2); + } + + // Consume to the input. + int bytesRead = input.read(sampleData, sampleSize, sampleData.length - sampleSize); + if (bytesRead != C.RESULT_END_OF_INPUT) { + sampleSize += bytesRead; + if (currentFileSize == C.LENGTH_UNSET || sampleSize != currentFileSize) { + return Extractor.RESULT_CONTINUE; + } + } + + // We've reached the end of the input, which corresponds to the end of the current file. + processSample(); + return Extractor.RESULT_END_OF_INPUT; + } + + @RequiresNonNull("output") + private void processSample() throws ParserException { + ParsableByteArray webvttData = new ParsableByteArray(sampleData); + + // Validate the first line of the header. + WebvttParserUtil.validateWebvttHeaderLine(webvttData); + + // Defaults to use if the header doesn't contain an X-TIMESTAMP-MAP header. + long vttTimestampUs = 0; + long tsTimestampUs = 0; + + // Parse the remainder of the header looking for X-TIMESTAMP-MAP. + for (String line = webvttData.readLine(); + !TextUtils.isEmpty(line); + line = webvttData.readLine()) { + if (line.startsWith("X-TIMESTAMP-MAP")) { + Matcher localTimestampMatcher = LOCAL_TIMESTAMP.matcher(line); + if (!localTimestampMatcher.find()) { + throw new ParserException("X-TIMESTAMP-MAP doesn't contain local timestamp: " + line); + } + Matcher mediaTimestampMatcher = MEDIA_TIMESTAMP.matcher(line); + if (!mediaTimestampMatcher.find()) { + throw new ParserException("X-TIMESTAMP-MAP doesn't contain media timestamp: " + line); + } + vttTimestampUs = WebvttParserUtil.parseTimestampUs(localTimestampMatcher.group(1)); + tsTimestampUs = TimestampAdjuster.ptsToUs(Long.parseLong(mediaTimestampMatcher.group(1))); + } + } + + // Find the first cue header and parse the start time. + Matcher cueHeaderMatcher = WebvttParserUtil.findNextCueHeader(webvttData); + if (cueHeaderMatcher == null) { + // No cues found. Don't output a sample, but still output a corresponding track. + buildTrackOutput(0); + return; + } + + long firstCueTimeUs = WebvttParserUtil.parseTimestampUs(cueHeaderMatcher.group(1)); + long sampleTimeUs = timestampAdjuster.adjustTsTimestamp( + TimestampAdjuster.usToPts(firstCueTimeUs + tsTimestampUs - vttTimestampUs)); + long subsampleOffsetUs = sampleTimeUs - firstCueTimeUs; + // Output the track. + TrackOutput trackOutput = buildTrackOutput(subsampleOffsetUs); + // Output the sample. + sampleDataWrapper.reset(sampleData, sampleSize); + trackOutput.sampleData(sampleDataWrapper, sampleSize); + trackOutput.sampleMetadata(sampleTimeUs, C.BUFFER_FLAG_KEY_FRAME, sampleSize, 0, null); + } + + @RequiresNonNull("output") + private TrackOutput buildTrackOutput(long subsampleOffsetUs) { + TrackOutput trackOutput = output.track(0, C.TRACK_TYPE_TEXT); + trackOutput.format(Format.createTextSampleFormat(null, MimeTypes.TEXT_VTT, null, + Format.NO_VALUE, 0, language, null, subsampleOffsetUs)); + output.endTracks(); + return trackOutput; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/offline/HlsDownloader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/offline/HlsDownloader.java new file mode 100644 index 0000000000..636100a8a9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/offline/HlsDownloader.java @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.offline; + +import android.net.Uri; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.DownloaderConstructorHelper; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.SegmentDownloader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.StreamKey; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMasterPlaylist; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsPlaylist; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistParser; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.ParsingLoadable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.UriUtil; +import java.io.IOException; +import java.util.ArrayList; +import java.util.HashSet; +import java.util.List; + +/** + * A downloader for HLS streams. + * + *

Example usage: + * + * 

{@code
+ * SimpleCache cache = new SimpleCache(downloadFolder, new NoOpCacheEvictor(), databaseProvider);
+ * DefaultHttpDataSourceFactory factory = new DefaultHttpDataSourceFactory("ExoPlayer", null);
+ * DownloaderConstructorHelper constructorHelper =
+ *     new DownloaderConstructorHelper(cache, factory);
+ * // Create a downloader for the first variant in a master playlist.
+ * HlsDownloader hlsDownloader =
+ *     new HlsDownloader(
+ *         playlistUri,
+ *         Collections.singletonList(new StreamKey(HlsMasterPlaylist.GROUP_INDEX_VARIANT, 0)),
+ *         constructorHelper);
+ * // Perform the download.
+ * hlsDownloader.download(progressListener);
+ * // Access downloaded data using CacheDataSource
+ * CacheDataSource cacheDataSource =
+ *     new CacheDataSource(cache, factory.createDataSource(), CacheDataSource.FLAG_BLOCK_ON_CACHE);
+ * }
+ */ +public final class HlsDownloader extends SegmentDownloader { + + /** + * @param playlistUri The {@link Uri} of the playlist to be downloaded. + * @param streamKeys Keys defining which renditions in the playlist should be selected for + * download. If empty, all renditions are downloaded. + * @param constructorHelper A {@link DownloaderConstructorHelper} instance. + */ + public HlsDownloader( + Uri playlistUri, List streamKeys, DownloaderConstructorHelper constructorHelper) { + super(playlistUri, streamKeys, constructorHelper); + } + + @Override + protected HlsPlaylist getManifest(DataSource dataSource, DataSpec dataSpec) throws IOException { + return loadManifest(dataSource, dataSpec); + } + + @Override + protected List getSegments( + DataSource dataSource, HlsPlaylist playlist, boolean allowIncompleteList) throws IOException { + ArrayList mediaPlaylistDataSpecs = new ArrayList<>(); + if (playlist instanceof HlsMasterPlaylist) { + HlsMasterPlaylist masterPlaylist = (HlsMasterPlaylist) playlist; + addMediaPlaylistDataSpecs(masterPlaylist.mediaPlaylistUrls, mediaPlaylistDataSpecs); + } else { + mediaPlaylistDataSpecs.add( + SegmentDownloader.getCompressibleDataSpec(Uri.parse(playlist.baseUri))); + } + + ArrayList segments = new ArrayList<>(); + HashSet seenEncryptionKeyUris = new HashSet<>(); + for (DataSpec mediaPlaylistDataSpec : mediaPlaylistDataSpecs) { + segments.add(new Segment(/* startTimeUs= */ 0, mediaPlaylistDataSpec)); + HlsMediaPlaylist mediaPlaylist; + try { + mediaPlaylist = (HlsMediaPlaylist) loadManifest(dataSource, mediaPlaylistDataSpec); + } catch (IOException e) { + if (!allowIncompleteList) { + throw e; + } + // Generating an incomplete segment list is allowed. Advance to the next media playlist. + continue; + } + HlsMediaPlaylist.Segment lastInitSegment = null; + List hlsSegments = mediaPlaylist.segments; + for (int i = 0; i < hlsSegments.size(); i++) { + HlsMediaPlaylist.Segment segment = hlsSegments.get(i); + HlsMediaPlaylist.Segment initSegment = segment.initializationSegment; + if (initSegment != null && initSegment != lastInitSegment) { + lastInitSegment = initSegment; + addSegment(mediaPlaylist, initSegment, seenEncryptionKeyUris, segments); + } + addSegment(mediaPlaylist, segment, seenEncryptionKeyUris, segments); + } + } + return segments; + } + + private void addMediaPlaylistDataSpecs(List mediaPlaylistUrls, List out) { + for (int i = 0; i < mediaPlaylistUrls.size(); i++) { + out.add(SegmentDownloader.getCompressibleDataSpec(mediaPlaylistUrls.get(i))); + } + } + + private static HlsPlaylist loadManifest(DataSource dataSource, DataSpec dataSpec) + throws IOException { + return ParsingLoadable.load( + dataSource, new HlsPlaylistParser(), dataSpec, C.DATA_TYPE_MANIFEST); + } + + private void addSegment( + HlsMediaPlaylist mediaPlaylist, + HlsMediaPlaylist.Segment segment, + HashSet seenEncryptionKeyUris, + ArrayList out) { + String baseUri = mediaPlaylist.baseUri; + long startTimeUs = mediaPlaylist.startTimeUs + segment.relativeStartTimeUs; + if (segment.fullSegmentEncryptionKeyUri != null) { + Uri keyUri = UriUtil.resolveToUri(baseUri, segment.fullSegmentEncryptionKeyUri); + if (seenEncryptionKeyUris.add(keyUri)) { + out.add(new Segment(startTimeUs, SegmentDownloader.getCompressibleDataSpec(keyUri))); + } + } + Uri segmentUri = UriUtil.resolveToUri(baseUri, segment.url); + DataSpec dataSpec = + new DataSpec(segmentUri, segment.byterangeOffset, segment.byterangeLength, /* key= */ null); + out.add(new Segment(startTimeUs, dataSpec)); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/offline/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/offline/package-info.java new file mode 100644 index 0000000000..669bd44c89 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/offline/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.offline; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/package-info.java new file mode 100644 index 0000000000..89882bb596 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/DefaultHlsPlaylistParserFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/DefaultHlsPlaylistParserFactory.java new file mode 100644 index 0000000000..394a97a56a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/DefaultHlsPlaylistParserFactory.java @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.ParsingLoadable; + +/** Default implementation for {@link HlsPlaylistParserFactory}. */ +public final class DefaultHlsPlaylistParserFactory implements HlsPlaylistParserFactory { + + @Override + public ParsingLoadable.Parser createPlaylistParser() { + return new HlsPlaylistParser(); + } + + @Override + public ParsingLoadable.Parser createPlaylistParser( + HlsMasterPlaylist masterPlaylist) { + return new HlsPlaylistParser(masterPlaylist); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/DefaultHlsPlaylistTracker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/DefaultHlsPlaylistTracker.java new file mode 100644 index 0000000000..b7f6a06975 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/DefaultHlsPlaylistTracker.java @@ -0,0 +1,678 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist; + +import android.net.Uri; +import android.os.Handler; +import android.os.SystemClock; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.HlsDataSourceFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMasterPlaylist.Variant; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist.Segment; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.LoadErrorAction; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.ParsingLoadable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; + +/** Default implementation for {@link HlsPlaylistTracker}. */ +public final class DefaultHlsPlaylistTracker + implements HlsPlaylistTracker, Loader.Callback> { + + /** Factory for {@link DefaultHlsPlaylistTracker} instances. */ + public static final Factory FACTORY = DefaultHlsPlaylistTracker::new; + + /** + * Default coefficient applied on the target duration of a playlist to determine the amount of + * time after which an unchanging playlist is considered stuck. + */ + public static final double DEFAULT_PLAYLIST_STUCK_TARGET_DURATION_COEFFICIENT = 3.5; + + private final HlsDataSourceFactory dataSourceFactory; + private final HlsPlaylistParserFactory playlistParserFactory; + private final LoadErrorHandlingPolicy loadErrorHandlingPolicy; + private final HashMap playlistBundles; + private final List listeners; + private final double playlistStuckTargetDurationCoefficient; + + @Nullable private ParsingLoadable.Parser mediaPlaylistParser; + @Nullable private EventDispatcher eventDispatcher; + @Nullable private Loader initialPlaylistLoader; + @Nullable private Handler playlistRefreshHandler; + @Nullable private PrimaryPlaylistListener primaryPlaylistListener; + @Nullable private HlsMasterPlaylist masterPlaylist; + @Nullable private Uri primaryMediaPlaylistUrl; + @Nullable private HlsMediaPlaylist primaryMediaPlaylistSnapshot; + private boolean isLive; + private long initialStartTimeUs; + + /** + * Creates an instance. + * + * @param dataSourceFactory A factory for {@link DataSource} instances. + * @param loadErrorHandlingPolicy The {@link LoadErrorHandlingPolicy}. + * @param playlistParserFactory An {@link HlsPlaylistParserFactory}. + */ + public DefaultHlsPlaylistTracker( + HlsDataSourceFactory dataSourceFactory, + LoadErrorHandlingPolicy loadErrorHandlingPolicy, + HlsPlaylistParserFactory playlistParserFactory) { + this( + dataSourceFactory, + loadErrorHandlingPolicy, + playlistParserFactory, + DEFAULT_PLAYLIST_STUCK_TARGET_DURATION_COEFFICIENT); + } + + /** + * Creates an instance. + * + * @param dataSourceFactory A factory for {@link DataSource} instances. + * @param loadErrorHandlingPolicy The {@link LoadErrorHandlingPolicy}. + * @param playlistParserFactory An {@link HlsPlaylistParserFactory}. + * @param playlistStuckTargetDurationCoefficient A coefficient to apply to the target duration of + * media playlists in order to determine that a non-changing playlist is stuck. Once a + * playlist is deemed stuck, a {@link PlaylistStuckException} is thrown via {@link + * #maybeThrowPlaylistRefreshError(Uri)}. + */ + public DefaultHlsPlaylistTracker( + HlsDataSourceFactory dataSourceFactory, + LoadErrorHandlingPolicy loadErrorHandlingPolicy, + HlsPlaylistParserFactory playlistParserFactory, + double playlistStuckTargetDurationCoefficient) { + this.dataSourceFactory = dataSourceFactory; + this.playlistParserFactory = playlistParserFactory; + this.loadErrorHandlingPolicy = loadErrorHandlingPolicy; + this.playlistStuckTargetDurationCoefficient = playlistStuckTargetDurationCoefficient; + listeners = new ArrayList<>(); + playlistBundles = new HashMap<>(); + initialStartTimeUs = C.TIME_UNSET; + } + + // HlsPlaylistTracker implementation. + + @Override + public void start( + Uri initialPlaylistUri, + EventDispatcher eventDispatcher, + PrimaryPlaylistListener primaryPlaylistListener) { + this.playlistRefreshHandler = new Handler(); + this.eventDispatcher = eventDispatcher; + this.primaryPlaylistListener = primaryPlaylistListener; + ParsingLoadable masterPlaylistLoadable = + new ParsingLoadable<>( + dataSourceFactory.createDataSource(C.DATA_TYPE_MANIFEST), + initialPlaylistUri, + C.DATA_TYPE_MANIFEST, + playlistParserFactory.createPlaylistParser()); + Assertions.checkState(initialPlaylistLoader == null); + initialPlaylistLoader = new Loader("DefaultHlsPlaylistTracker:MasterPlaylist"); + long elapsedRealtime = + initialPlaylistLoader.startLoading( + masterPlaylistLoadable, + this, + loadErrorHandlingPolicy.getMinimumLoadableRetryCount(masterPlaylistLoadable.type)); + eventDispatcher.loadStarted( + masterPlaylistLoadable.dataSpec, + masterPlaylistLoadable.type, + elapsedRealtime); + } + + @Override + public void stop() { + primaryMediaPlaylistUrl = null; + primaryMediaPlaylistSnapshot = null; + masterPlaylist = null; + initialStartTimeUs = C.TIME_UNSET; + initialPlaylistLoader.release(); + initialPlaylistLoader = null; + for (MediaPlaylistBundle bundle : playlistBundles.values()) { + bundle.release(); + } + playlistRefreshHandler.removeCallbacksAndMessages(null); + playlistRefreshHandler = null; + playlistBundles.clear(); + } + + @Override + public void addListener(PlaylistEventListener listener) { + listeners.add(listener); + } + + @Override + public void removeListener(PlaylistEventListener listener) { + listeners.remove(listener); + } + + @Override + @Nullable + public HlsMasterPlaylist getMasterPlaylist() { + return masterPlaylist; + } + + @Override + @Nullable + public HlsMediaPlaylist getPlaylistSnapshot(Uri url, boolean isForPlayback) { + HlsMediaPlaylist snapshot = playlistBundles.get(url).getPlaylistSnapshot(); + if (snapshot != null && isForPlayback) { + maybeSetPrimaryUrl(url); + } + return snapshot; + } + + @Override + public long getInitialStartTimeUs() { + return initialStartTimeUs; + } + + @Override + public boolean isSnapshotValid(Uri url) { + return playlistBundles.get(url).isSnapshotValid(); + } + + @Override + public void maybeThrowPrimaryPlaylistRefreshError() throws IOException { + if (initialPlaylistLoader != null) { + initialPlaylistLoader.maybeThrowError(); + } + if (primaryMediaPlaylistUrl != null) { + maybeThrowPlaylistRefreshError(primaryMediaPlaylistUrl); + } + } + + @Override + public void maybeThrowPlaylistRefreshError(Uri url) throws IOException { + playlistBundles.get(url).maybeThrowPlaylistRefreshError(); + } + + @Override + public void refreshPlaylist(Uri url) { + playlistBundles.get(url).loadPlaylist(); + } + + @Override + public boolean isLive() { + return isLive; + } + + // Loader.Callback implementation. + + @Override + public void onLoadCompleted( + ParsingLoadable loadable, long elapsedRealtimeMs, long loadDurationMs) { + HlsPlaylist result = loadable.getResult(); + HlsMasterPlaylist masterPlaylist; + boolean isMediaPlaylist = result instanceof HlsMediaPlaylist; + if (isMediaPlaylist) { + masterPlaylist = HlsMasterPlaylist.createSingleVariantMasterPlaylist(result.baseUri); + } else /* result instanceof HlsMasterPlaylist */ { + masterPlaylist = (HlsMasterPlaylist) result; + } + this.masterPlaylist = masterPlaylist; + mediaPlaylistParser = playlistParserFactory.createPlaylistParser(masterPlaylist); + primaryMediaPlaylistUrl = masterPlaylist.variants.get(0).url; + createBundles(masterPlaylist.mediaPlaylistUrls); + MediaPlaylistBundle primaryBundle = playlistBundles.get(primaryMediaPlaylistUrl); + if (isMediaPlaylist) { + // We don't need to load the playlist again. We can use the same result. + primaryBundle.processLoadedPlaylist((HlsMediaPlaylist) result, loadDurationMs); + } else { + primaryBundle.loadPlaylist(); + } + eventDispatcher.loadCompleted( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + C.DATA_TYPE_MANIFEST, + elapsedRealtimeMs, + loadDurationMs, + loadable.bytesLoaded()); + } + + @Override + public void onLoadCanceled( + ParsingLoadable loadable, + long elapsedRealtimeMs, + long loadDurationMs, + boolean released) { + eventDispatcher.loadCanceled( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + C.DATA_TYPE_MANIFEST, + elapsedRealtimeMs, + loadDurationMs, + loadable.bytesLoaded()); + } + + @Override + public LoadErrorAction onLoadError( + ParsingLoadable loadable, + long elapsedRealtimeMs, + long loadDurationMs, + IOException error, + int errorCount) { + long retryDelayMs = + loadErrorHandlingPolicy.getRetryDelayMsFor( + loadable.type, loadDurationMs, error, errorCount); + boolean isFatal = retryDelayMs == C.TIME_UNSET; + eventDispatcher.loadError( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + C.DATA_TYPE_MANIFEST, + elapsedRealtimeMs, + loadDurationMs, + loadable.bytesLoaded(), + error, + isFatal); + return isFatal + ? Loader.DONT_RETRY_FATAL + : Loader.createRetryAction(/* resetErrorCount= */ false, retryDelayMs); + } + + // Internal methods. + + private boolean maybeSelectNewPrimaryUrl() { + List variants = masterPlaylist.variants; + int variantsSize = variants.size(); + long currentTimeMs = SystemClock.elapsedRealtime(); + for (int i = 0; i < variantsSize; i++) { + MediaPlaylistBundle bundle = playlistBundles.get(variants.get(i).url); + if (currentTimeMs > bundle.blacklistUntilMs) { + primaryMediaPlaylistUrl = bundle.playlistUrl; + bundle.loadPlaylist(); + return true; + } + } + return false; + } + + private void maybeSetPrimaryUrl(Uri url) { + if (url.equals(primaryMediaPlaylistUrl) + || !isVariantUrl(url) + || (primaryMediaPlaylistSnapshot != null && primaryMediaPlaylistSnapshot.hasEndTag)) { + // Ignore if the primary media playlist URL is unchanged, if the media playlist is not + // referenced directly by a variant, or it the last primary snapshot contains an end tag. + return; + } + primaryMediaPlaylistUrl = url; + playlistBundles.get(primaryMediaPlaylistUrl).loadPlaylist(); + } + + /** Returns whether any of the variants in the master playlist have the specified playlist URL. */ + private boolean isVariantUrl(Uri playlistUrl) { + List variants = masterPlaylist.variants; + for (int i = 0; i < variants.size(); i++) { + if (playlistUrl.equals(variants.get(i).url)) { + return true; + } + } + return false; + } + + private void createBundles(List urls) { + int listSize = urls.size(); + for (int i = 0; i < listSize; i++) { + Uri url = urls.get(i); + MediaPlaylistBundle bundle = new MediaPlaylistBundle(url); + playlistBundles.put(url, bundle); + } + } + + /** + * Called by the bundles when a snapshot changes. + * + * @param url The url of the playlist. + * @param newSnapshot The new snapshot. + */ + private void onPlaylistUpdated(Uri url, HlsMediaPlaylist newSnapshot) { + if (url.equals(primaryMediaPlaylistUrl)) { + if (primaryMediaPlaylistSnapshot == null) { + // This is the first primary url snapshot. + isLive = !newSnapshot.hasEndTag; + initialStartTimeUs = newSnapshot.startTimeUs; + } + primaryMediaPlaylistSnapshot = newSnapshot; + primaryPlaylistListener.onPrimaryPlaylistRefreshed(newSnapshot); + } + int listenersSize = listeners.size(); + for (int i = 0; i < listenersSize; i++) { + listeners.get(i).onPlaylistChanged(); + } + } + + private boolean notifyPlaylistError(Uri playlistUrl, long blacklistDurationMs) { + int listenersSize = listeners.size(); + boolean anyBlacklistingFailed = false; + for (int i = 0; i < listenersSize; i++) { + anyBlacklistingFailed |= !listeners.get(i).onPlaylistError(playlistUrl, blacklistDurationMs); + } + return anyBlacklistingFailed; + } + + private HlsMediaPlaylist getLatestPlaylistSnapshot( + HlsMediaPlaylist oldPlaylist, HlsMediaPlaylist loadedPlaylist) { + if (!loadedPlaylist.isNewerThan(oldPlaylist)) { + if (loadedPlaylist.hasEndTag) { + // If the loaded playlist has an end tag but is not newer than the old playlist then we have + // an inconsistent state. This is typically caused by the server incorrectly resetting the + // media sequence when appending the end tag. We resolve this case as best we can by + // returning the old playlist with the end tag appended. + return oldPlaylist.copyWithEndTag(); + } else { + return oldPlaylist; + } + } + long startTimeUs = getLoadedPlaylistStartTimeUs(oldPlaylist, loadedPlaylist); + int discontinuitySequence = getLoadedPlaylistDiscontinuitySequence(oldPlaylist, loadedPlaylist); + return loadedPlaylist.copyWith(startTimeUs, discontinuitySequence); + } + + private long getLoadedPlaylistStartTimeUs( + HlsMediaPlaylist oldPlaylist, HlsMediaPlaylist loadedPlaylist) { + if (loadedPlaylist.hasProgramDateTime) { + return loadedPlaylist.startTimeUs; + } + long primarySnapshotStartTimeUs = + primaryMediaPlaylistSnapshot != null ? primaryMediaPlaylistSnapshot.startTimeUs : 0; + if (oldPlaylist == null) { + return primarySnapshotStartTimeUs; + } + int oldPlaylistSize = oldPlaylist.segments.size(); + Segment firstOldOverlappingSegment = getFirstOldOverlappingSegment(oldPlaylist, loadedPlaylist); + if (firstOldOverlappingSegment != null) { + return oldPlaylist.startTimeUs + firstOldOverlappingSegment.relativeStartTimeUs; + } else if (oldPlaylistSize == loadedPlaylist.mediaSequence - oldPlaylist.mediaSequence) { + return oldPlaylist.getEndTimeUs(); + } else { + // No segments overlap, we assume the new playlist start coincides with the primary playlist. + return primarySnapshotStartTimeUs; + } + } + + private int getLoadedPlaylistDiscontinuitySequence( + HlsMediaPlaylist oldPlaylist, HlsMediaPlaylist loadedPlaylist) { + if (loadedPlaylist.hasDiscontinuitySequence) { + return loadedPlaylist.discontinuitySequence; + } + // TODO: Improve cross-playlist discontinuity adjustment. + int primaryUrlDiscontinuitySequence = + primaryMediaPlaylistSnapshot != null + ? primaryMediaPlaylistSnapshot.discontinuitySequence + : 0; + if (oldPlaylist == null) { + return primaryUrlDiscontinuitySequence; + } + Segment firstOldOverlappingSegment = getFirstOldOverlappingSegment(oldPlaylist, loadedPlaylist); + if (firstOldOverlappingSegment != null) { + return oldPlaylist.discontinuitySequence + + firstOldOverlappingSegment.relativeDiscontinuitySequence + - loadedPlaylist.segments.get(0).relativeDiscontinuitySequence; + } + return primaryUrlDiscontinuitySequence; + } + + private static Segment getFirstOldOverlappingSegment( + HlsMediaPlaylist oldPlaylist, HlsMediaPlaylist loadedPlaylist) { + int mediaSequenceOffset = (int) (loadedPlaylist.mediaSequence - oldPlaylist.mediaSequence); + List oldSegments = oldPlaylist.segments; + return mediaSequenceOffset < oldSegments.size() ? oldSegments.get(mediaSequenceOffset) : null; + } + + /** Holds all information related to a specific Media Playlist. */ + private final class MediaPlaylistBundle + implements Loader.Callback>, Runnable { + + private final Uri playlistUrl; + private final Loader mediaPlaylistLoader; + private final ParsingLoadable mediaPlaylistLoadable; + + @Nullable private HlsMediaPlaylist playlistSnapshot; + private long lastSnapshotLoadMs; + private long lastSnapshotChangeMs; + private long earliestNextLoadTimeMs; + private long blacklistUntilMs; + private boolean loadPending; + private IOException playlistError; + + public MediaPlaylistBundle(Uri playlistUrl) { + this.playlistUrl = playlistUrl; + mediaPlaylistLoader = new Loader("DefaultHlsPlaylistTracker:MediaPlaylist"); + mediaPlaylistLoadable = + new ParsingLoadable<>( + dataSourceFactory.createDataSource(C.DATA_TYPE_MANIFEST), + playlistUrl, + C.DATA_TYPE_MANIFEST, + mediaPlaylistParser); + } + + @Nullable + public HlsMediaPlaylist getPlaylistSnapshot() { + return playlistSnapshot; + } + + public boolean isSnapshotValid() { + if (playlistSnapshot == null) { + return false; + } + long currentTimeMs = SystemClock.elapsedRealtime(); + long snapshotValidityDurationMs = Math.max(30000, C.usToMs(playlistSnapshot.durationUs)); + return playlistSnapshot.hasEndTag + || playlistSnapshot.playlistType == HlsMediaPlaylist.PLAYLIST_TYPE_EVENT + || playlistSnapshot.playlistType == HlsMediaPlaylist.PLAYLIST_TYPE_VOD + || lastSnapshotLoadMs + snapshotValidityDurationMs > currentTimeMs; + } + + public void release() { + mediaPlaylistLoader.release(); + } + + public void loadPlaylist() { + blacklistUntilMs = 0; + if (loadPending || mediaPlaylistLoader.isLoading() || mediaPlaylistLoader.hasFatalError()) { + // Load already pending, in progress, or a fatal error has been encountered. Do nothing. + return; + } + long currentTimeMs = SystemClock.elapsedRealtime(); + if (currentTimeMs < earliestNextLoadTimeMs) { + loadPending = true; + playlistRefreshHandler.postDelayed(this, earliestNextLoadTimeMs - currentTimeMs); + } else { + loadPlaylistImmediately(); + } + } + + public void maybeThrowPlaylistRefreshError() throws IOException { + mediaPlaylistLoader.maybeThrowError(); + if (playlistError != null) { + throw playlistError; + } + } + + // Loader.Callback implementation. + + @Override + public void onLoadCompleted( + ParsingLoadable loadable, long elapsedRealtimeMs, long loadDurationMs) { + HlsPlaylist result = loadable.getResult(); + if (result instanceof HlsMediaPlaylist) { + processLoadedPlaylist((HlsMediaPlaylist) result, loadDurationMs); + eventDispatcher.loadCompleted( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + C.DATA_TYPE_MANIFEST, + elapsedRealtimeMs, + loadDurationMs, + loadable.bytesLoaded()); + } else { + playlistError = new ParserException("Loaded playlist has unexpected type."); + } + } + + @Override + public void onLoadCanceled( + ParsingLoadable loadable, + long elapsedRealtimeMs, + long loadDurationMs, + boolean released) { + eventDispatcher.loadCanceled( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + C.DATA_TYPE_MANIFEST, + elapsedRealtimeMs, + loadDurationMs, + loadable.bytesLoaded()); + } + + @Override + public LoadErrorAction onLoadError( + ParsingLoadable loadable, + long elapsedRealtimeMs, + long loadDurationMs, + IOException error, + int errorCount) { + LoadErrorAction loadErrorAction; + + long blacklistDurationMs = + loadErrorHandlingPolicy.getBlacklistDurationMsFor( + loadable.type, loadDurationMs, error, errorCount); + boolean shouldBlacklist = blacklistDurationMs != C.TIME_UNSET; + + boolean blacklistingFailed = + notifyPlaylistError(playlistUrl, blacklistDurationMs) || !shouldBlacklist; + if (shouldBlacklist) { + blacklistingFailed |= blacklistPlaylist(blacklistDurationMs); + } + + if (blacklistingFailed) { + long retryDelay = + loadErrorHandlingPolicy.getRetryDelayMsFor( + loadable.type, loadDurationMs, error, errorCount); + loadErrorAction = + retryDelay != C.TIME_UNSET + ? Loader.createRetryAction(false, retryDelay) + : Loader.DONT_RETRY_FATAL; + } else { + loadErrorAction = Loader.DONT_RETRY; + } + + eventDispatcher.loadError( + loadable.dataSpec, + loadable.getUri(), + loadable.getResponseHeaders(), + C.DATA_TYPE_MANIFEST, + elapsedRealtimeMs, + loadDurationMs, + loadable.bytesLoaded(), + error, + /* wasCanceled= */ !loadErrorAction.isRetry()); + + return loadErrorAction; + } + + // Runnable implementation. + + @Override + public void run() { + loadPending = false; + loadPlaylistImmediately(); + } + + // Internal methods. + + private void loadPlaylistImmediately() { + long elapsedRealtime = + mediaPlaylistLoader.startLoading( + mediaPlaylistLoadable, + this, + loadErrorHandlingPolicy.getMinimumLoadableRetryCount(mediaPlaylistLoadable.type)); + eventDispatcher.loadStarted( + mediaPlaylistLoadable.dataSpec, + mediaPlaylistLoadable.type, + elapsedRealtime); + } + + private void processLoadedPlaylist(HlsMediaPlaylist loadedPlaylist, long loadDurationMs) { + HlsMediaPlaylist oldPlaylist = playlistSnapshot; + long currentTimeMs = SystemClock.elapsedRealtime(); + lastSnapshotLoadMs = currentTimeMs; + playlistSnapshot = getLatestPlaylistSnapshot(oldPlaylist, loadedPlaylist); + if (playlistSnapshot != oldPlaylist) { + playlistError = null; + lastSnapshotChangeMs = currentTimeMs; + onPlaylistUpdated(playlistUrl, playlistSnapshot); + } else if (!playlistSnapshot.hasEndTag) { + if (loadedPlaylist.mediaSequence + loadedPlaylist.segments.size() + < playlistSnapshot.mediaSequence) { + // TODO: Allow customization of playlist resets handling. + // The media sequence jumped backwards. The server has probably reset. We do not try + // blacklisting in this case. + playlistError = new PlaylistResetException(playlistUrl); + notifyPlaylistError(playlistUrl, C.TIME_UNSET); + } else if (currentTimeMs - lastSnapshotChangeMs + > C.usToMs(playlistSnapshot.targetDurationUs) + * playlistStuckTargetDurationCoefficient) { + // TODO: Allow customization of stuck playlists handling. + playlistError = new PlaylistStuckException(playlistUrl); + long blacklistDurationMs = + loadErrorHandlingPolicy.getBlacklistDurationMsFor( + C.DATA_TYPE_MANIFEST, loadDurationMs, playlistError, /* errorCount= */ 1); + notifyPlaylistError(playlistUrl, blacklistDurationMs); + if (blacklistDurationMs != C.TIME_UNSET) { + blacklistPlaylist(blacklistDurationMs); + } + } + } + // Do not allow the playlist to load again within the target duration if we obtained a new + // snapshot, or half the target duration otherwise. + earliestNextLoadTimeMs = + currentTimeMs + + C.usToMs( + playlistSnapshot != oldPlaylist + ? playlistSnapshot.targetDurationUs + : (playlistSnapshot.targetDurationUs / 2)); + // Schedule a load if this is the primary playlist and it doesn't have an end tag. Else the + // next load will be scheduled when refreshPlaylist is called, or when this playlist becomes + // the primary. + if (playlistUrl.equals(primaryMediaPlaylistUrl) && !playlistSnapshot.hasEndTag) { + loadPlaylist(); + } + } + + /** + * Blacklists the playlist. + * + * @param blacklistDurationMs The number of milliseconds for which the playlist should be + * blacklisted. + * @return Whether the playlist is the primary, despite being blacklisted. + */ + private boolean blacklistPlaylist(long blacklistDurationMs) { + blacklistUntilMs = SystemClock.elapsedRealtime() + blacklistDurationMs; + return playlistUrl.equals(primaryMediaPlaylistUrl) && !maybeSelectNewPrimaryUrl(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/FilteringHlsPlaylistParserFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/FilteringHlsPlaylistParserFactory.java new file mode 100644 index 0000000000..a8c9ea1756 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/FilteringHlsPlaylistParserFactory.java @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.FilteringManifestParser; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.StreamKey; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.ParsingLoadable; +import java.util.List; + +/** + * A {@link HlsPlaylistParserFactory} that includes only the streams identified by the given stream + * keys. + */ +public final class FilteringHlsPlaylistParserFactory implements HlsPlaylistParserFactory { + + private final HlsPlaylistParserFactory hlsPlaylistParserFactory; + private final List streamKeys; + + /** + * @param hlsPlaylistParserFactory A factory for the parsers of the playlists which will be + * filtered. + * @param streamKeys The stream keys. If null or empty then filtering will not occur. + */ + public FilteringHlsPlaylistParserFactory( + HlsPlaylistParserFactory hlsPlaylistParserFactory, List streamKeys) { + this.hlsPlaylistParserFactory = hlsPlaylistParserFactory; + this.streamKeys = streamKeys; + } + + @Override + public ParsingLoadable.Parser createPlaylistParser() { + return new FilteringManifestParser<>( + hlsPlaylistParserFactory.createPlaylistParser(), streamKeys); + } + + @Override + public ParsingLoadable.Parser createPlaylistParser( + HlsMasterPlaylist masterPlaylist) { + return new FilteringManifestParser<>( + hlsPlaylistParserFactory.createPlaylistParser(masterPlaylist), streamKeys); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsMasterPlaylist.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsMasterPlaylist.java new file mode 100644 index 0000000000..376f2b4301 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsMasterPlaylist.java @@ -0,0 +1,330 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.StreamKey; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.Map; + +/** Represents an HLS master playlist. */ +public final class HlsMasterPlaylist extends HlsPlaylist { + + /** Represents an empty master playlist, from which no attributes can be inherited. */ + public static final HlsMasterPlaylist EMPTY = + new HlsMasterPlaylist( + /* baseUri= */ "", + /* tags= */ Collections.emptyList(), + /* variants= */ Collections.emptyList(), + /* videos= */ Collections.emptyList(), + /* audios= */ Collections.emptyList(), + /* subtitles= */ Collections.emptyList(), + /* closedCaptions= */ Collections.emptyList(), + /* muxedAudioFormat= */ null, + /* muxedCaptionFormats= */ Collections.emptyList(), + /* hasIndependentSegments= */ false, + /* variableDefinitions= */ Collections.emptyMap(), + /* sessionKeyDrmInitData= */ Collections.emptyList()); + + // These constants must not be changed because they are persisted in offline stream keys. + public static final int GROUP_INDEX_VARIANT = 0; + public static final int GROUP_INDEX_AUDIO = 1; + public static final int GROUP_INDEX_SUBTITLE = 2; + + /** A variant (i.e. an #EXT-X-STREAM-INF tag) in a master playlist. */ + public static final class Variant { + + /** The variant's url. */ + public final Uri url; + + /** Format information associated with this variant. */ + public final Format format; + + /** The video rendition group referenced by this variant, or {@code null}. */ + @Nullable public final String videoGroupId; + + /** The audio rendition group referenced by this variant, or {@code null}. */ + @Nullable public final String audioGroupId; + + /** The subtitle rendition group referenced by this variant, or {@code null}. */ + @Nullable public final String subtitleGroupId; + + /** The caption rendition group referenced by this variant, or {@code null}. */ + @Nullable public final String captionGroupId; + + /** + * @param url See {@link #url}. + * @param format See {@link #format}. + * @param videoGroupId See {@link #videoGroupId}. + * @param audioGroupId See {@link #audioGroupId}. + * @param subtitleGroupId See {@link #subtitleGroupId}. + * @param captionGroupId See {@link #captionGroupId}. + */ + public Variant( + Uri url, + Format format, + @Nullable String videoGroupId, + @Nullable String audioGroupId, + @Nullable String subtitleGroupId, + @Nullable String captionGroupId) { + this.url = url; + this.format = format; + this.videoGroupId = videoGroupId; + this.audioGroupId = audioGroupId; + this.subtitleGroupId = subtitleGroupId; + this.captionGroupId = captionGroupId; + } + + /** + * Creates a variant for a given media playlist url. + * + * @param url The media playlist url. + * @return The variant instance. + */ + public static Variant createMediaPlaylistVariantUrl(Uri url) { + Format format = + Format.createContainerFormat( + "0", + /* label= */ null, + MimeTypes.APPLICATION_M3U8, + /* sampleMimeType= */ null, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + /* selectionFlags= */ 0, + /* roleFlags= */ 0, + /* language= */ null); + return new Variant( + url, + format, + /* videoGroupId= */ null, + /* audioGroupId= */ null, + /* subtitleGroupId= */ null, + /* captionGroupId= */ null); + } + + /** Returns a copy of this instance with the given {@link Format}. */ + public Variant copyWithFormat(Format format) { + return new Variant(url, format, videoGroupId, audioGroupId, subtitleGroupId, captionGroupId); + } + } + + /** A rendition (i.e. an #EXT-X-MEDIA tag) in a master playlist. */ + public static final class Rendition { + + /** The rendition's url, or null if the tag does not have a URI attribute. */ + @Nullable public final Uri url; + + /** Format information associated with this rendition. */ + public final Format format; + + /** The group to which this rendition belongs. */ + public final String groupId; + + /** The name of the rendition. */ + public final String name; + + /** + * @param url See {@link #url}. + * @param format See {@link #format}. + * @param groupId See {@link #groupId}. + * @param name See {@link #name}. + */ + public Rendition(@Nullable Uri url, Format format, String groupId, String name) { + this.url = url; + this.format = format; + this.groupId = groupId; + this.name = name; + } + + } + + /** All of the media playlist URLs referenced by the playlist. */ + public final List mediaPlaylistUrls; + /** The variants declared by the playlist. */ + public final List variants; + /** The video renditions declared by the playlist. */ + public final List videos; + /** The audio renditions declared by the playlist. */ + public final List audios; + /** The subtitle renditions declared by the playlist. */ + public final List subtitles; + /** The closed caption renditions declared by the playlist. */ + public final List closedCaptions; + + /** + * The format of the audio muxed in the variants. May be null if the playlist does not declare any + * muxed audio. + */ + @Nullable public final Format muxedAudioFormat; + /** + * The format of the closed captions declared by the playlist. May be empty if the playlist + * explicitly declares no captions are available, or null if the playlist does not declare any + * captions information. + */ + @Nullable public final List muxedCaptionFormats; + /** Contains variable definitions, as defined by the #EXT-X-DEFINE tag. */ + public final Map variableDefinitions; + /** DRM initialization data derived from #EXT-X-SESSION-KEY tags. */ + public final List sessionKeyDrmInitData; + + /** + * @param baseUri See {@link #baseUri}. + * @param tags See {@link #tags}. + * @param variants See {@link #variants}. + * @param videos See {@link #videos}. + * @param audios See {@link #audios}. + * @param subtitles See {@link #subtitles}. + * @param closedCaptions See {@link #closedCaptions}. + * @param muxedAudioFormat See {@link #muxedAudioFormat}. + * @param muxedCaptionFormats See {@link #muxedCaptionFormats}. + * @param hasIndependentSegments See {@link #hasIndependentSegments}. + * @param variableDefinitions See {@link #variableDefinitions}. + * @param sessionKeyDrmInitData See {@link #sessionKeyDrmInitData}. + */ + public HlsMasterPlaylist( + String baseUri, + List tags, + List variants, + List videos, + List audios, + List subtitles, + List closedCaptions, + @Nullable Format muxedAudioFormat, + @Nullable List muxedCaptionFormats, + boolean hasIndependentSegments, + Map variableDefinitions, + List sessionKeyDrmInitData) { + super(baseUri, tags, hasIndependentSegments); + this.mediaPlaylistUrls = + Collections.unmodifiableList( + getMediaPlaylistUrls(variants, videos, audios, subtitles, closedCaptions)); + this.variants = Collections.unmodifiableList(variants); + this.videos = Collections.unmodifiableList(videos); + this.audios = Collections.unmodifiableList(audios); + this.subtitles = Collections.unmodifiableList(subtitles); + this.closedCaptions = Collections.unmodifiableList(closedCaptions); + this.muxedAudioFormat = muxedAudioFormat; + this.muxedCaptionFormats = muxedCaptionFormats != null + ? Collections.unmodifiableList(muxedCaptionFormats) : null; + this.variableDefinitions = Collections.unmodifiableMap(variableDefinitions); + this.sessionKeyDrmInitData = Collections.unmodifiableList(sessionKeyDrmInitData); + } + + @Override + public HlsMasterPlaylist copy(List streamKeys) { + return new HlsMasterPlaylist( + baseUri, + tags, + copyStreams(variants, GROUP_INDEX_VARIANT, streamKeys), + // TODO: Allow stream keys to specify video renditions to be retained. + /* videos= */ Collections.emptyList(), + copyStreams(audios, GROUP_INDEX_AUDIO, streamKeys), + copyStreams(subtitles, GROUP_INDEX_SUBTITLE, streamKeys), + // TODO: Update to retain all closed captions. + /* closedCaptions= */ Collections.emptyList(), + muxedAudioFormat, + muxedCaptionFormats, + hasIndependentSegments, + variableDefinitions, + sessionKeyDrmInitData); + } + + /** + * Creates a playlist with a single variant. + * + * @param variantUrl The url of the single variant. + * @return A master playlist with a single variant for the provided url. + */ + public static HlsMasterPlaylist createSingleVariantMasterPlaylist(String variantUrl) { + List variant = + Collections.singletonList(Variant.createMediaPlaylistVariantUrl(Uri.parse(variantUrl))); + return new HlsMasterPlaylist( + /* baseUri= */ "", + /* tags= */ Collections.emptyList(), + variant, + /* videos= */ Collections.emptyList(), + /* audios= */ Collections.emptyList(), + /* subtitles= */ Collections.emptyList(), + /* closedCaptions= */ Collections.emptyList(), + /* muxedAudioFormat= */ null, + /* muxedCaptionFormats= */ null, + /* hasIndependentSegments= */ false, + /* variableDefinitions= */ Collections.emptyMap(), + /* sessionKeyDrmInitData= */ Collections.emptyList()); + } + + private static List getMediaPlaylistUrls( + List variants, + List videos, + List audios, + List subtitles, + List closedCaptions) { + ArrayList mediaPlaylistUrls = new ArrayList<>(); + for (int i = 0; i < variants.size(); i++) { + Uri uri = variants.get(i).url; + if (!mediaPlaylistUrls.contains(uri)) { + mediaPlaylistUrls.add(uri); + } + } + addMediaPlaylistUrls(videos, mediaPlaylistUrls); + addMediaPlaylistUrls(audios, mediaPlaylistUrls); + addMediaPlaylistUrls(subtitles, mediaPlaylistUrls); + addMediaPlaylistUrls(closedCaptions, mediaPlaylistUrls); + return mediaPlaylistUrls; + } + + private static void addMediaPlaylistUrls(List renditions, List out) { + for (int i = 0; i < renditions.size(); i++) { + Uri uri = renditions.get(i).url; + if (uri != null && !out.contains(uri)) { + out.add(uri); + } + } + } + + private static List copyStreams( + List streams, int groupIndex, List streamKeys) { + List copiedStreams = new ArrayList<>(streamKeys.size()); + // TODO: + // 1. When variants with the same URL are not de-duplicated, duplicates must not increment + // trackIndex so as to avoid breaking stream keys that have been persisted for offline. All + // duplicates should be copied if the first variant is copied, or discarded otherwise. + // 2. When renditions with null URLs are permitted, they must not increment trackIndex so as to + // avoid breaking stream keys that have been persisted for offline. All renitions with null + // URLs should be copied. They may become unreachable if all variants that reference them are + // removed, but this is OK. + // 3. Renditions with URLs matching copied variants should always themselves be copied, even if + // the corresponding stream key is omitted. Else we're throwing away information for no gain. + for (int i = 0; i < streams.size(); i++) { + T stream = streams.get(i); + for (int j = 0; j < streamKeys.size(); j++) { + StreamKey streamKey = streamKeys.get(j); + if (streamKey.groupIndex == groupIndex && streamKey.trackIndex == i) { + copiedStreams.add(stream); + break; + } + } + } + return copiedStreams; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsMediaPlaylist.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsMediaPlaylist.java new file mode 100644 index 0000000000..c3250a5cc0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsMediaPlaylist.java @@ -0,0 +1,375 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist; + +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.StreamKey; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Collections; +import java.util.List; + +/** Represents an HLS media playlist. */ +public final class HlsMediaPlaylist extends HlsPlaylist { + + /** Media segment reference. */ + @SuppressWarnings("ComparableType") + public static final class Segment implements Comparable { + + /** + * The url of the segment. + */ + public final String url; + /** + * The media initialization section for this segment, as defined by #EXT-X-MAP. May be null if + * the media playlist does not define a media section for this segment. The same instance is + * used for all segments that share an EXT-X-MAP tag. + */ + @Nullable public final Segment initializationSegment; + /** The duration of the segment in microseconds, as defined by #EXTINF. */ + public final long durationUs; + /** The human readable title of the segment. */ + public final String title; + /** + * The number of #EXT-X-DISCONTINUITY tags in the playlist before the segment. + */ + public final int relativeDiscontinuitySequence; + /** + * The start time of the segment in microseconds, relative to the start of the playlist. + */ + public final long relativeStartTimeUs; + /** + * DRM initialization data for sample decryption, or null if the segment does not use CDM-DRM + * protection. + */ + @Nullable public final DrmInitData drmInitData; + /** + * The encryption identity key uri as defined by #EXT-X-KEY, or null if the segment does not use + * full segment encryption with identity key. + */ + @Nullable public final String fullSegmentEncryptionKeyUri; + /** + * The encryption initialization vector as defined by #EXT-X-KEY, or null if the segment is not + * encrypted. + */ + @Nullable public final String encryptionIV; + /** + * The segment's byte range offset, as defined by #EXT-X-BYTERANGE. + */ + public final long byterangeOffset; + /** + * The segment's byte range length, as defined by #EXT-X-BYTERANGE, or {@link C#LENGTH_UNSET} if + * no byte range is specified. + */ + public final long byterangeLength; + + /** Whether the segment is tagged with #EXT-X-GAP. */ + public final boolean hasGapTag; + + /** + * @param uri See {@link #url}. + * @param byterangeOffset See {@link #byterangeOffset}. + * @param byterangeLength See {@link #byterangeLength}. + * @param fullSegmentEncryptionKeyUri See {@link #fullSegmentEncryptionKeyUri}. + * @param encryptionIV See {@link #encryptionIV}. + */ + public Segment( + String uri, + long byterangeOffset, + long byterangeLength, + @Nullable String fullSegmentEncryptionKeyUri, + @Nullable String encryptionIV) { + this( + uri, + /* initializationSegment= */ null, + /* title= */ "", + /* durationUs= */ 0, + /* relativeDiscontinuitySequence= */ -1, + /* relativeStartTimeUs= */ C.TIME_UNSET, + /* drmInitData= */ null, + fullSegmentEncryptionKeyUri, + encryptionIV, + byterangeOffset, + byterangeLength, + /* hasGapTag= */ false); + } + + /** + * @param url See {@link #url}. + * @param initializationSegment See {@link #initializationSegment}. + * @param title See {@link #title}. + * @param durationUs See {@link #durationUs}. + * @param relativeDiscontinuitySequence See {@link #relativeDiscontinuitySequence}. + * @param relativeStartTimeUs See {@link #relativeStartTimeUs}. + * @param drmInitData See {@link #drmInitData}. + * @param fullSegmentEncryptionKeyUri See {@link #fullSegmentEncryptionKeyUri}. + * @param encryptionIV See {@link #encryptionIV}. + * @param byterangeOffset See {@link #byterangeOffset}. + * @param byterangeLength See {@link #byterangeLength}. + * @param hasGapTag See {@link #hasGapTag}. + */ + public Segment( + String url, + @Nullable Segment initializationSegment, + String title, + long durationUs, + int relativeDiscontinuitySequence, + long relativeStartTimeUs, + @Nullable DrmInitData drmInitData, + @Nullable String fullSegmentEncryptionKeyUri, + @Nullable String encryptionIV, + long byterangeOffset, + long byterangeLength, + boolean hasGapTag) { + this.url = url; + this.initializationSegment = initializationSegment; + this.title = title; + this.durationUs = durationUs; + this.relativeDiscontinuitySequence = relativeDiscontinuitySequence; + this.relativeStartTimeUs = relativeStartTimeUs; + this.drmInitData = drmInitData; + this.fullSegmentEncryptionKeyUri = fullSegmentEncryptionKeyUri; + this.encryptionIV = encryptionIV; + this.byterangeOffset = byterangeOffset; + this.byterangeLength = byterangeLength; + this.hasGapTag = hasGapTag; + } + + @Override + public int compareTo(Long relativeStartTimeUs) { + return this.relativeStartTimeUs > relativeStartTimeUs + ? 1 : (this.relativeStartTimeUs < relativeStartTimeUs ? -1 : 0); + } + + } + + /** + * Type of the playlist, as defined by #EXT-X-PLAYLIST-TYPE. One of {@link + * #PLAYLIST_TYPE_UNKNOWN}, {@link #PLAYLIST_TYPE_VOD} or {@link #PLAYLIST_TYPE_EVENT}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({PLAYLIST_TYPE_UNKNOWN, PLAYLIST_TYPE_VOD, PLAYLIST_TYPE_EVENT}) + public @interface PlaylistType {} + + public static final int PLAYLIST_TYPE_UNKNOWN = 0; + public static final int PLAYLIST_TYPE_VOD = 1; + public static final int PLAYLIST_TYPE_EVENT = 2; + + /** + * The type of the playlist. See {@link PlaylistType}. + */ + @PlaylistType public final int playlistType; + /** + * The start offset in microseconds, as defined by #EXT-X-START. + */ + public final long startOffsetUs; + /** + * If {@link #hasProgramDateTime} is true, contains the datetime as microseconds since epoch. + * Otherwise, contains the aggregated duration of removed segments up to this snapshot of the + * playlist. + */ + public final long startTimeUs; + /** + * Whether the playlist contains the #EXT-X-DISCONTINUITY-SEQUENCE tag. + */ + public final boolean hasDiscontinuitySequence; + /** + * The discontinuity sequence number of the first media segment in the playlist, as defined by + * #EXT-X-DISCONTINUITY-SEQUENCE. + */ + public final int discontinuitySequence; + /** + * The media sequence number of the first media segment in the playlist, as defined by + * #EXT-X-MEDIA-SEQUENCE. + */ + public final long mediaSequence; + /** + * The compatibility version, as defined by #EXT-X-VERSION. + */ + public final int version; + /** + * The target duration in microseconds, as defined by #EXT-X-TARGETDURATION. + */ + public final long targetDurationUs; + /** + * Whether the playlist contains the #EXT-X-ENDLIST tag. + */ + public final boolean hasEndTag; + /** + * Whether the playlist contains a #EXT-X-PROGRAM-DATE-TIME tag. + */ + public final boolean hasProgramDateTime; + /** + * Contains the CDM protection schemes used by segments in this playlist. Does not contain any key + * acquisition data. Null if none of the segments in the playlist is CDM-encrypted. + */ + @Nullable public final DrmInitData protectionSchemes; + /** + * The list of segments in the playlist. + */ + public final List segments; + /** + * The total duration of the playlist in microseconds. + */ + public final long durationUs; + + /** + * @param playlistType See {@link #playlistType}. + * @param baseUri See {@link #baseUri}. + * @param tags See {@link #tags}. + * @param startOffsetUs See {@link #startOffsetUs}. + * @param startTimeUs See {@link #startTimeUs}. + * @param hasDiscontinuitySequence See {@link #hasDiscontinuitySequence}. + * @param discontinuitySequence See {@link #discontinuitySequence}. + * @param mediaSequence See {@link #mediaSequence}. + * @param version See {@link #version}. + * @param targetDurationUs See {@link #targetDurationUs}. + * @param hasIndependentSegments See {@link #hasIndependentSegments}. + * @param hasEndTag See {@link #hasEndTag}. + * @param protectionSchemes See {@link #protectionSchemes}. + * @param hasProgramDateTime See {@link #hasProgramDateTime}. + * @param segments See {@link #segments}. + */ + public HlsMediaPlaylist( + @PlaylistType int playlistType, + String baseUri, + List tags, + long startOffsetUs, + long startTimeUs, + boolean hasDiscontinuitySequence, + int discontinuitySequence, + long mediaSequence, + int version, + long targetDurationUs, + boolean hasIndependentSegments, + boolean hasEndTag, + boolean hasProgramDateTime, + @Nullable DrmInitData protectionSchemes, + List segments) { + super(baseUri, tags, hasIndependentSegments); + this.playlistType = playlistType; + this.startTimeUs = startTimeUs; + this.hasDiscontinuitySequence = hasDiscontinuitySequence; + this.discontinuitySequence = discontinuitySequence; + this.mediaSequence = mediaSequence; + this.version = version; + this.targetDurationUs = targetDurationUs; + this.hasEndTag = hasEndTag; + this.hasProgramDateTime = hasProgramDateTime; + this.protectionSchemes = protectionSchemes; + this.segments = Collections.unmodifiableList(segments); + if (!segments.isEmpty()) { + Segment last = segments.get(segments.size() - 1); + durationUs = last.relativeStartTimeUs + last.durationUs; + } else { + durationUs = 0; + } + this.startOffsetUs = startOffsetUs == C.TIME_UNSET ? C.TIME_UNSET + : startOffsetUs >= 0 ? startOffsetUs : durationUs + startOffsetUs; + } + + @Override + public HlsMediaPlaylist copy(List streamKeys) { + return this; + } + + /** + * Returns whether this playlist is newer than {@code other}. + * + * @param other The playlist to compare. + * @return Whether this playlist is newer than {@code other}. + */ + public boolean isNewerThan(HlsMediaPlaylist other) { + if (other == null || mediaSequence > other.mediaSequence) { + return true; + } + if (mediaSequence < other.mediaSequence) { + return false; + } + // The media sequences are equal. + int segmentCount = segments.size(); + int otherSegmentCount = other.segments.size(); + return segmentCount > otherSegmentCount + || (segmentCount == otherSegmentCount && hasEndTag && !other.hasEndTag); + } + + /** + * Returns the result of adding the duration of the playlist to its start time. + */ + public long getEndTimeUs() { + return startTimeUs + durationUs; + } + + /** + * Returns a playlist identical to this one except for the start time, the discontinuity sequence + * and {@code hasDiscontinuitySequence} values. The first two are set to the specified values, + * {@code hasDiscontinuitySequence} is set to true. + * + * @param startTimeUs The start time for the returned playlist. + * @param discontinuitySequence The discontinuity sequence for the returned playlist. + * @return An identical playlist including the provided discontinuity and timing information. + */ + public HlsMediaPlaylist copyWith(long startTimeUs, int discontinuitySequence) { + return new HlsMediaPlaylist( + playlistType, + baseUri, + tags, + startOffsetUs, + startTimeUs, + /* hasDiscontinuitySequence= */ true, + discontinuitySequence, + mediaSequence, + version, + targetDurationUs, + hasIndependentSegments, + hasEndTag, + hasProgramDateTime, + protectionSchemes, + segments); + } + + /** + * Returns a playlist identical to this one except that an end tag is added. If an end tag is + * already present then the playlist will return itself. + */ + public HlsMediaPlaylist copyWithEndTag() { + if (this.hasEndTag) { + return this; + } + return new HlsMediaPlaylist( + playlistType, + baseUri, + tags, + startOffsetUs, + startTimeUs, + hasDiscontinuitySequence, + discontinuitySequence, + mediaSequence, + version, + targetDurationUs, + hasIndependentSegments, + /* hasEndTag= */ true, + hasProgramDateTime, + protectionSchemes, + segments); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylist.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylist.java new file mode 100644 index 0000000000..28f9b0eeb0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylist.java @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.offline.FilterableManifest; +import java.util.Collections; +import java.util.List; + +/** Represents an HLS playlist. */ +public abstract class HlsPlaylist implements FilterableManifest { + + /** + * The base uri. Used to resolve relative paths. + */ + public final String baseUri; + /** + * The list of tags in the playlist. + */ + public final List tags; + /** + * Whether the media is formed of independent segments, as defined by the + * #EXT-X-INDEPENDENT-SEGMENTS tag. + */ + public final boolean hasIndependentSegments; + + /** + * @param baseUri See {@link #baseUri}. + * @param tags See {@link #tags}. + * @param hasIndependentSegments See {@link #hasIndependentSegments}. + */ + protected HlsPlaylist(String baseUri, List tags, boolean hasIndependentSegments) { + this.baseUri = baseUri; + this.tags = Collections.unmodifiableList(tags); + this.hasIndependentSegments = hasIndependentSegments; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistParser.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistParser.java new file mode 100644 index 0000000000..5495d28520 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistParser.java @@ -0,0 +1,1007 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist; + +import android.net.Uri; +import android.text.TextUtils; +import android.util.Base64; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData.SchemeData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.mp4.PsshAtomUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.UnrecognizedInputFormatException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.HlsTrackMetadataEntry; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.HlsTrackMetadataEntry.VariantInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMasterPlaylist.Rendition; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMasterPlaylist.Variant; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist.Segment; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.ParsingLoadable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.UriUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.BufferedReader; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.util.ArrayDeque; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.NoSuchElementException; +import java.util.Queue; +import java.util.TreeMap; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import org.checkerframework.checker.nullness.qual.EnsuresNonNullIf; +import org.checkerframework.checker.nullness.qual.PolyNull; + +/** + * HLS playlists parsing logic. + */ +public final class HlsPlaylistParser implements ParsingLoadable.Parser { + + private static final String PLAYLIST_HEADER = "#EXTM3U"; + + private static final String TAG_PREFIX = "#EXT"; + + private static final String TAG_VERSION = "#EXT-X-VERSION"; + private static final String TAG_PLAYLIST_TYPE = "#EXT-X-PLAYLIST-TYPE"; + private static final String TAG_DEFINE = "#EXT-X-DEFINE"; + private static final String TAG_STREAM_INF = "#EXT-X-STREAM-INF"; + private static final String TAG_MEDIA = "#EXT-X-MEDIA"; + private static final String TAG_TARGET_DURATION = "#EXT-X-TARGETDURATION"; + private static final String TAG_DISCONTINUITY = "#EXT-X-DISCONTINUITY"; + private static final String TAG_DISCONTINUITY_SEQUENCE = "#EXT-X-DISCONTINUITY-SEQUENCE"; + private static final String TAG_PROGRAM_DATE_TIME = "#EXT-X-PROGRAM-DATE-TIME"; + private static final String TAG_INIT_SEGMENT = "#EXT-X-MAP"; + private static final String TAG_INDEPENDENT_SEGMENTS = "#EXT-X-INDEPENDENT-SEGMENTS"; + private static final String TAG_MEDIA_DURATION = "#EXTINF"; + private static final String TAG_MEDIA_SEQUENCE = "#EXT-X-MEDIA-SEQUENCE"; + private static final String TAG_START = "#EXT-X-START"; + private static final String TAG_ENDLIST = "#EXT-X-ENDLIST"; + private static final String TAG_KEY = "#EXT-X-KEY"; + private static final String TAG_SESSION_KEY = "#EXT-X-SESSION-KEY"; + private static final String TAG_BYTERANGE = "#EXT-X-BYTERANGE"; + private static final String TAG_GAP = "#EXT-X-GAP"; + + private static final String TYPE_AUDIO = "AUDIO"; + private static final String TYPE_VIDEO = "VIDEO"; + private static final String TYPE_SUBTITLES = "SUBTITLES"; + private static final String TYPE_CLOSED_CAPTIONS = "CLOSED-CAPTIONS"; + + private static final String METHOD_NONE = "NONE"; + private static final String METHOD_AES_128 = "AES-128"; + private static final String METHOD_SAMPLE_AES = "SAMPLE-AES"; + // Replaced by METHOD_SAMPLE_AES_CTR. Keep for backward compatibility. + private static final String METHOD_SAMPLE_AES_CENC = "SAMPLE-AES-CENC"; + private static final String METHOD_SAMPLE_AES_CTR = "SAMPLE-AES-CTR"; + private static final String KEYFORMAT_PLAYREADY = "com.microsoft.playready"; + private static final String KEYFORMAT_IDENTITY = "identity"; + private static final String KEYFORMAT_WIDEVINE_PSSH_BINARY = + "urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"; + private static final String KEYFORMAT_WIDEVINE_PSSH_JSON = "com.widevine"; + + private static final String BOOLEAN_TRUE = "YES"; + private static final String BOOLEAN_FALSE = "NO"; + + private static final String ATTR_CLOSED_CAPTIONS_NONE = "CLOSED-CAPTIONS=NONE"; + + private static final Pattern REGEX_AVERAGE_BANDWIDTH = + Pattern.compile("AVERAGE-BANDWIDTH=(\\d+)\\b"); + private static final Pattern REGEX_VIDEO = Pattern.compile("VIDEO=\"(.+?)\""); + private static final Pattern REGEX_AUDIO = Pattern.compile("AUDIO=\"(.+?)\""); + private static final Pattern REGEX_SUBTITLES = Pattern.compile("SUBTITLES=\"(.+?)\""); + private static final Pattern REGEX_CLOSED_CAPTIONS = Pattern.compile("CLOSED-CAPTIONS=\"(.+?)\""); + private static final Pattern REGEX_BANDWIDTH = Pattern.compile("[^-]BANDWIDTH=(\\d+)\\b"); + private static final Pattern REGEX_CHANNELS = Pattern.compile("CHANNELS=\"(.+?)\""); + private static final Pattern REGEX_CODECS = Pattern.compile("CODECS=\"(.+?)\""); + private static final Pattern REGEX_RESOLUTION = Pattern.compile("RESOLUTION=(\\d+x\\d+)"); + private static final Pattern REGEX_FRAME_RATE = Pattern.compile("FRAME-RATE=([\\d\\.]+)\\b"); + private static final Pattern REGEX_TARGET_DURATION = Pattern.compile(TAG_TARGET_DURATION + + ":(\\d+)\\b"); + private static final Pattern REGEX_VERSION = Pattern.compile(TAG_VERSION + ":(\\d+)\\b"); + private static final Pattern REGEX_PLAYLIST_TYPE = Pattern.compile(TAG_PLAYLIST_TYPE + + ":(.+)\\b"); + private static final Pattern REGEX_MEDIA_SEQUENCE = Pattern.compile(TAG_MEDIA_SEQUENCE + + ":(\\d+)\\b"); + private static final Pattern REGEX_MEDIA_DURATION = Pattern.compile(TAG_MEDIA_DURATION + + ":([\\d\\.]+)\\b"); + private static final Pattern REGEX_MEDIA_TITLE = + Pattern.compile(TAG_MEDIA_DURATION + ":[\\d\\.]+\\b,(.+)"); + private static final Pattern REGEX_TIME_OFFSET = Pattern.compile("TIME-OFFSET=(-?[\\d\\.]+)\\b"); + private static final Pattern REGEX_BYTERANGE = Pattern.compile(TAG_BYTERANGE + + ":(\\d+(?:@\\d+)?)\\b"); + private static final Pattern REGEX_ATTR_BYTERANGE = + Pattern.compile("BYTERANGE=\"(\\d+(?:@\\d+)?)\\b\""); + private static final Pattern REGEX_METHOD = + Pattern.compile( + "METHOD=(" + + METHOD_NONE + + "|" + + METHOD_AES_128 + + "|" + + METHOD_SAMPLE_AES + + "|" + + METHOD_SAMPLE_AES_CENC + + "|" + + METHOD_SAMPLE_AES_CTR + + ")" + + "\\s*(?:,|$)"); + private static final Pattern REGEX_KEYFORMAT = Pattern.compile("KEYFORMAT=\"(.+?)\""); + private static final Pattern REGEX_KEYFORMATVERSIONS = + Pattern.compile("KEYFORMATVERSIONS=\"(.+?)\""); + private static final Pattern REGEX_URI = Pattern.compile("URI=\"(.+?)\""); + private static final Pattern REGEX_IV = Pattern.compile("IV=([^,.*]+)"); + private static final Pattern REGEX_TYPE = Pattern.compile("TYPE=(" + TYPE_AUDIO + "|" + TYPE_VIDEO + + "|" + TYPE_SUBTITLES + "|" + TYPE_CLOSED_CAPTIONS + ")"); + private static final Pattern REGEX_LANGUAGE = Pattern.compile("LANGUAGE=\"(.+?)\""); + private static final Pattern REGEX_NAME = Pattern.compile("NAME=\"(.+?)\""); + private static final Pattern REGEX_GROUP_ID = Pattern.compile("GROUP-ID=\"(.+?)\""); + private static final Pattern REGEX_CHARACTERISTICS = Pattern.compile("CHARACTERISTICS=\"(.+?)\""); + private static final Pattern REGEX_INSTREAM_ID = + Pattern.compile("INSTREAM-ID=\"((?:CC|SERVICE)\\d+)\""); + private static final Pattern REGEX_AUTOSELECT = compileBooleanAttrPattern("AUTOSELECT"); + private static final Pattern REGEX_DEFAULT = compileBooleanAttrPattern("DEFAULT"); + private static final Pattern REGEX_FORCED = compileBooleanAttrPattern("FORCED"); + private static final Pattern REGEX_VALUE = Pattern.compile("VALUE=\"(.+?)\""); + private static final Pattern REGEX_IMPORT = Pattern.compile("IMPORT=\"(.+?)\""); + private static final Pattern REGEX_VARIABLE_REFERENCE = + Pattern.compile("\\{\\$([a-zA-Z0-9\\-_]+)\\}"); + + private final HlsMasterPlaylist masterPlaylist; + + /** + * Creates an instance where media playlists are parsed without inheriting attributes from a + * master playlist. + */ + public HlsPlaylistParser() { + this(HlsMasterPlaylist.EMPTY); + } + + /** + * Creates an instance where parsed media playlists inherit attributes from the given master + * playlist. + * + * @param masterPlaylist The master playlist from which media playlists will inherit attributes. + */ + public HlsPlaylistParser(HlsMasterPlaylist masterPlaylist) { + this.masterPlaylist = masterPlaylist; + } + + @Override + public HlsPlaylist parse(Uri uri, InputStream inputStream) throws IOException { + BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); + Queue extraLines = new ArrayDeque<>(); + String line; + try { + if (!checkPlaylistHeader(reader)) { + throw new UnrecognizedInputFormatException("Input does not start with the #EXTM3U header.", + uri); + } + while ((line = reader.readLine()) != null) { + line = line.trim(); + if (line.isEmpty()) { + // Do nothing. + } else if (line.startsWith(TAG_STREAM_INF)) { + extraLines.add(line); + return parseMasterPlaylist(new LineIterator(extraLines, reader), uri.toString()); + } else if (line.startsWith(TAG_TARGET_DURATION) + || line.startsWith(TAG_MEDIA_SEQUENCE) + || line.startsWith(TAG_MEDIA_DURATION) + || line.startsWith(TAG_KEY) + || line.startsWith(TAG_BYTERANGE) + || line.equals(TAG_DISCONTINUITY) + || line.equals(TAG_DISCONTINUITY_SEQUENCE) + || line.equals(TAG_ENDLIST)) { + extraLines.add(line); + return parseMediaPlaylist( + masterPlaylist, new LineIterator(extraLines, reader), uri.toString()); + } else { + extraLines.add(line); + } + } + } finally { + Util.closeQuietly(reader); + } + throw new ParserException("Failed to parse the playlist, could not identify any tags."); + } + + private static boolean checkPlaylistHeader(BufferedReader reader) throws IOException { + int last = reader.read(); + if (last == 0xEF) { + if (reader.read() != 0xBB || reader.read() != 0xBF) { + return false; + } + // The playlist contains a Byte Order Mark, which gets discarded. + last = reader.read(); + } + last = skipIgnorableWhitespace(reader, true, last); + int playlistHeaderLength = PLAYLIST_HEADER.length(); + for (int i = 0; i < playlistHeaderLength; i++) { + if (last != PLAYLIST_HEADER.charAt(i)) { + return false; + } + last = reader.read(); + } + last = skipIgnorableWhitespace(reader, false, last); + return Util.isLinebreak(last); + } + + private static int skipIgnorableWhitespace(BufferedReader reader, boolean skipLinebreaks, int c) + throws IOException { + while (c != -1 && Character.isWhitespace(c) && (skipLinebreaks || !Util.isLinebreak(c))) { + c = reader.read(); + } + return c; + } + + private static HlsMasterPlaylist parseMasterPlaylist(LineIterator iterator, String baseUri) + throws IOException { + HashMap> urlToVariantInfos = new HashMap<>(); + HashMap variableDefinitions = new HashMap<>(); + ArrayList variants = new ArrayList<>(); + ArrayList videos = new ArrayList<>(); + ArrayList audios = new ArrayList<>(); + ArrayList subtitles = new ArrayList<>(); + ArrayList closedCaptions = new ArrayList<>(); + ArrayList mediaTags = new ArrayList<>(); + ArrayList sessionKeyDrmInitData = new ArrayList<>(); + ArrayList tags = new ArrayList<>(); + Format muxedAudioFormat = null; + List muxedCaptionFormats = null; + boolean noClosedCaptions = false; + boolean hasIndependentSegmentsTag = false; + + String line; + while (iterator.hasNext()) { + line = iterator.next(); + + if (line.startsWith(TAG_PREFIX)) { + // We expose all tags through the playlist. + tags.add(line); + } + + if (line.startsWith(TAG_DEFINE)) { + variableDefinitions.put( + /* key= */ parseStringAttr(line, REGEX_NAME, variableDefinitions), + /* value= */ parseStringAttr(line, REGEX_VALUE, variableDefinitions)); + } else if (line.equals(TAG_INDEPENDENT_SEGMENTS)) { + hasIndependentSegmentsTag = true; + } else if (line.startsWith(TAG_MEDIA)) { + // Media tags are parsed at the end to include codec information from #EXT-X-STREAM-INF + // tags. + mediaTags.add(line); + } else if (line.startsWith(TAG_SESSION_KEY)) { + String keyFormat = + parseOptionalStringAttr(line, REGEX_KEYFORMAT, KEYFORMAT_IDENTITY, variableDefinitions); + SchemeData schemeData = parseDrmSchemeData(line, keyFormat, variableDefinitions); + if (schemeData != null) { + String method = parseStringAttr(line, REGEX_METHOD, variableDefinitions); + String scheme = parseEncryptionScheme(method); + sessionKeyDrmInitData.add(new DrmInitData(scheme, schemeData)); + } + } else if (line.startsWith(TAG_STREAM_INF)) { + noClosedCaptions |= line.contains(ATTR_CLOSED_CAPTIONS_NONE); + int bitrate = parseIntAttr(line, REGEX_BANDWIDTH); + // TODO: Plumb this into Format. + int averageBitrate = parseOptionalIntAttr(line, REGEX_AVERAGE_BANDWIDTH, -1); + String codecs = parseOptionalStringAttr(line, REGEX_CODECS, variableDefinitions); + String resolutionString = + parseOptionalStringAttr(line, REGEX_RESOLUTION, variableDefinitions); + int width; + int height; + if (resolutionString != null) { + String[] widthAndHeight = resolutionString.split("x"); + width = Integer.parseInt(widthAndHeight[0]); + height = Integer.parseInt(widthAndHeight[1]); + if (width <= 0 || height <= 0) { + // Resolution string is invalid. + width = Format.NO_VALUE; + height = Format.NO_VALUE; + } + } else { + width = Format.NO_VALUE; + height = Format.NO_VALUE; + } + float frameRate = Format.NO_VALUE; + String frameRateString = + parseOptionalStringAttr(line, REGEX_FRAME_RATE, variableDefinitions); + if (frameRateString != null) { + frameRate = Float.parseFloat(frameRateString); + } + String videoGroupId = parseOptionalStringAttr(line, REGEX_VIDEO, variableDefinitions); + String audioGroupId = parseOptionalStringAttr(line, REGEX_AUDIO, variableDefinitions); + String subtitlesGroupId = + parseOptionalStringAttr(line, REGEX_SUBTITLES, variableDefinitions); + String closedCaptionsGroupId = + parseOptionalStringAttr(line, REGEX_CLOSED_CAPTIONS, variableDefinitions); + if (!iterator.hasNext()) { + throw new ParserException("#EXT-X-STREAM-INF tag must be followed by another line"); + } + line = + replaceVariableReferences( + iterator.next(), variableDefinitions); // #EXT-X-STREAM-INF's URI. + Uri uri = UriUtil.resolveToUri(baseUri, line); + Format format = + Format.createVideoContainerFormat( + /* id= */ Integer.toString(variants.size()), + /* label= */ null, + /* containerMimeType= */ MimeTypes.APPLICATION_M3U8, + /* sampleMimeType= */ null, + codecs, + /* metadata= */ null, + bitrate, + width, + height, + frameRate, + /* initializationData= */ null, + /* selectionFlags= */ 0, + /* roleFlags= */ 0); + Variant variant = + new Variant( + uri, format, videoGroupId, audioGroupId, subtitlesGroupId, closedCaptionsGroupId); + variants.add(variant); + ArrayList variantInfosForUrl = urlToVariantInfos.get(uri); + if (variantInfosForUrl == null) { + variantInfosForUrl = new ArrayList<>(); + urlToVariantInfos.put(uri, variantInfosForUrl); + } + variantInfosForUrl.add( + new VariantInfo( + bitrate, videoGroupId, audioGroupId, subtitlesGroupId, closedCaptionsGroupId)); + } + } + + // TODO: Don't deduplicate variants by URL. + ArrayList deduplicatedVariants = new ArrayList<>(); + HashSet urlsInDeduplicatedVariants = new HashSet<>(); + for (int i = 0; i < variants.size(); i++) { + Variant variant = variants.get(i); + if (urlsInDeduplicatedVariants.add(variant.url)) { + Assertions.checkState(variant.format.metadata == null); + HlsTrackMetadataEntry hlsMetadataEntry = + new HlsTrackMetadataEntry( + /* groupId= */ null, + /* name= */ null, + Assertions.checkNotNull(urlToVariantInfos.get(variant.url))); + deduplicatedVariants.add( + variant.copyWithFormat( + variant.format.copyWithMetadata(new Metadata(hlsMetadataEntry)))); + } + } + + for (int i = 0; i < mediaTags.size(); i++) { + line = mediaTags.get(i); + String groupId = parseStringAttr(line, REGEX_GROUP_ID, variableDefinitions); + String name = parseStringAttr(line, REGEX_NAME, variableDefinitions); + String referenceUri = parseOptionalStringAttr(line, REGEX_URI, variableDefinitions); + Uri uri = referenceUri == null ? null : UriUtil.resolveToUri(baseUri, referenceUri); + String language = parseOptionalStringAttr(line, REGEX_LANGUAGE, variableDefinitions); + @C.SelectionFlags int selectionFlags = parseSelectionFlags(line); + @C.RoleFlags int roleFlags = parseRoleFlags(line, variableDefinitions); + String formatId = groupId + ":" + name; + Format format; + Metadata metadata = + new Metadata(new HlsTrackMetadataEntry(groupId, name, Collections.emptyList())); + switch (parseStringAttr(line, REGEX_TYPE, variableDefinitions)) { + case TYPE_VIDEO: + Variant variant = getVariantWithVideoGroup(variants, groupId); + String codecs = null; + int width = Format.NO_VALUE; + int height = Format.NO_VALUE; + float frameRate = Format.NO_VALUE; + if (variant != null) { + Format variantFormat = variant.format; + codecs = Util.getCodecsOfType(variantFormat.codecs, C.TRACK_TYPE_VIDEO); + width = variantFormat.width; + height = variantFormat.height; + frameRate = variantFormat.frameRate; + } + String sampleMimeType = codecs != null ? MimeTypes.getMediaMimeType(codecs) : null; + format = + Format.createVideoContainerFormat( + /* id= */ formatId, + /* label= */ name, + /* containerMimeType= */ MimeTypes.APPLICATION_M3U8, + sampleMimeType, + codecs, + /* metadata= */ null, + /* bitrate= */ Format.NO_VALUE, + width, + height, + frameRate, + /* initializationData= */ null, + selectionFlags, + roleFlags) + .copyWithMetadata(metadata); + if (uri == null) { + // TODO: Remove this case and add a Rendition with a null uri to videos. + } else { + videos.add(new Rendition(uri, format, groupId, name)); + } + break; + case TYPE_AUDIO: + variant = getVariantWithAudioGroup(variants, groupId); + codecs = + variant != null + ? Util.getCodecsOfType(variant.format.codecs, C.TRACK_TYPE_AUDIO) + : null; + sampleMimeType = codecs != null ? MimeTypes.getMediaMimeType(codecs) : null; + String channelsString = + parseOptionalStringAttr(line, REGEX_CHANNELS, variableDefinitions); + int channelCount = Format.NO_VALUE; + if (channelsString != null) { + channelCount = Integer.parseInt(Util.splitAtFirst(channelsString, "/")[0]); + if (MimeTypes.AUDIO_E_AC3.equals(sampleMimeType) && channelsString.endsWith("/JOC")) { + sampleMimeType = MimeTypes.AUDIO_E_AC3_JOC; + } + } + format = + Format.createAudioContainerFormat( + /* id= */ formatId, + /* label= */ name, + /* containerMimeType= */ MimeTypes.APPLICATION_M3U8, + sampleMimeType, + codecs, + /* metadata= */ null, + /* bitrate= */ Format.NO_VALUE, + channelCount, + /* sampleRate= */ Format.NO_VALUE, + /* initializationData= */ null, + selectionFlags, + roleFlags, + language); + if (uri == null) { + // TODO: Remove muxedAudioFormat and add a Rendition with a null uri to audios. + muxedAudioFormat = format; + } else { + audios.add(new Rendition(uri, format.copyWithMetadata(metadata), groupId, name)); + } + break; + case TYPE_SUBTITLES: + codecs = null; + sampleMimeType = null; + variant = getVariantWithSubtitleGroup(variants, groupId); + if (variant != null) { + codecs = Util.getCodecsOfType(variant.format.codecs, C.TRACK_TYPE_TEXT); + sampleMimeType = MimeTypes.getMediaMimeType(codecs); + } + if (sampleMimeType == null) { + sampleMimeType = MimeTypes.TEXT_VTT; + } + format = + Format.createTextContainerFormat( + /* id= */ formatId, + /* label= */ name, + /* containerMimeType= */ MimeTypes.APPLICATION_M3U8, + sampleMimeType, + codecs, + /* bitrate= */ Format.NO_VALUE, + selectionFlags, + roleFlags, + language) + .copyWithMetadata(metadata); + subtitles.add(new Rendition(uri, format, groupId, name)); + break; + case TYPE_CLOSED_CAPTIONS: + String instreamId = parseStringAttr(line, REGEX_INSTREAM_ID, variableDefinitions); + String mimeType; + int accessibilityChannel; + if (instreamId.startsWith("CC")) { + mimeType = MimeTypes.APPLICATION_CEA608; + accessibilityChannel = Integer.parseInt(instreamId.substring(2)); + } else /* starts with SERVICE */ { + mimeType = MimeTypes.APPLICATION_CEA708; + accessibilityChannel = Integer.parseInt(instreamId.substring(7)); + } + if (muxedCaptionFormats == null) { + muxedCaptionFormats = new ArrayList<>(); + } + muxedCaptionFormats.add( + Format.createTextContainerFormat( + /* id= */ formatId, + /* label= */ name, + /* containerMimeType= */ null, + /* sampleMimeType= */ mimeType, + /* codecs= */ null, + /* bitrate= */ Format.NO_VALUE, + selectionFlags, + roleFlags, + language, + accessibilityChannel)); + // TODO: Remove muxedCaptionFormats and add a Rendition with a null uri to closedCaptions. + break; + default: + // Do nothing. + break; + } + } + + if (noClosedCaptions) { + muxedCaptionFormats = Collections.emptyList(); + } + + return new HlsMasterPlaylist( + baseUri, + tags, + deduplicatedVariants, + videos, + audios, + subtitles, + closedCaptions, + muxedAudioFormat, + muxedCaptionFormats, + hasIndependentSegmentsTag, + variableDefinitions, + sessionKeyDrmInitData); + } + + @Nullable + private static Variant getVariantWithAudioGroup(ArrayList variants, String groupId) { + for (int i = 0; i < variants.size(); i++) { + Variant variant = variants.get(i); + if (groupId.equals(variant.audioGroupId)) { + return variant; + } + } + return null; + } + + @Nullable + private static Variant getVariantWithVideoGroup(ArrayList variants, String groupId) { + for (int i = 0; i < variants.size(); i++) { + Variant variant = variants.get(i); + if (groupId.equals(variant.videoGroupId)) { + return variant; + } + } + return null; + } + + @Nullable + private static Variant getVariantWithSubtitleGroup(ArrayList variants, String groupId) { + for (int i = 0; i < variants.size(); i++) { + Variant variant = variants.get(i); + if (groupId.equals(variant.subtitleGroupId)) { + return variant; + } + } + return null; + } + + private static HlsMediaPlaylist parseMediaPlaylist( + HlsMasterPlaylist masterPlaylist, LineIterator iterator, String baseUri) throws IOException { + @HlsMediaPlaylist.PlaylistType int playlistType = HlsMediaPlaylist.PLAYLIST_TYPE_UNKNOWN; + long startOffsetUs = C.TIME_UNSET; + long mediaSequence = 0; + int version = 1; // Default version == 1. + long targetDurationUs = C.TIME_UNSET; + boolean hasIndependentSegmentsTag = masterPlaylist.hasIndependentSegments; + boolean hasEndTag = false; + Segment initializationSegment = null; + HashMap variableDefinitions = new HashMap<>(); + List segments = new ArrayList<>(); + List tags = new ArrayList<>(); + + long segmentDurationUs = 0; + String segmentTitle = ""; + boolean hasDiscontinuitySequence = false; + int playlistDiscontinuitySequence = 0; + int relativeDiscontinuitySequence = 0; + long playlistStartTimeUs = 0; + long segmentStartTimeUs = 0; + long segmentByteRangeOffset = 0; + long segmentByteRangeLength = C.LENGTH_UNSET; + long segmentMediaSequence = 0; + boolean hasGapTag = false; + + DrmInitData playlistProtectionSchemes = null; + String fullSegmentEncryptionKeyUri = null; + String fullSegmentEncryptionIV = null; + TreeMap currentSchemeDatas = new TreeMap<>(); + String encryptionScheme = null; + DrmInitData cachedDrmInitData = null; + + String line; + while (iterator.hasNext()) { + line = iterator.next(); + + if (line.startsWith(TAG_PREFIX)) { + // We expose all tags through the playlist. + tags.add(line); + } + + if (line.startsWith(TAG_PLAYLIST_TYPE)) { + String playlistTypeString = parseStringAttr(line, REGEX_PLAYLIST_TYPE, variableDefinitions); + if ("VOD".equals(playlistTypeString)) { + playlistType = HlsMediaPlaylist.PLAYLIST_TYPE_VOD; + } else if ("EVENT".equals(playlistTypeString)) { + playlistType = HlsMediaPlaylist.PLAYLIST_TYPE_EVENT; + } + } else if (line.startsWith(TAG_START)) { + startOffsetUs = (long) (parseDoubleAttr(line, REGEX_TIME_OFFSET) * C.MICROS_PER_SECOND); + } else if (line.startsWith(TAG_INIT_SEGMENT)) { + String uri = parseStringAttr(line, REGEX_URI, variableDefinitions); + String byteRange = parseOptionalStringAttr(line, REGEX_ATTR_BYTERANGE, variableDefinitions); + if (byteRange != null) { + String[] splitByteRange = byteRange.split("@"); + segmentByteRangeLength = Long.parseLong(splitByteRange[0]); + if (splitByteRange.length > 1) { + segmentByteRangeOffset = Long.parseLong(splitByteRange[1]); + } + } + if (fullSegmentEncryptionKeyUri != null && fullSegmentEncryptionIV == null) { + // See RFC 8216, Section 4.3.2.5. + throw new ParserException( + "The encryption IV attribute must be present when an initialization segment is " + + "encrypted with METHOD=AES-128."); + } + initializationSegment = + new Segment( + uri, + segmentByteRangeOffset, + segmentByteRangeLength, + fullSegmentEncryptionKeyUri, + fullSegmentEncryptionIV); + segmentByteRangeOffset = 0; + segmentByteRangeLength = C.LENGTH_UNSET; + } else if (line.startsWith(TAG_TARGET_DURATION)) { + targetDurationUs = parseIntAttr(line, REGEX_TARGET_DURATION) * C.MICROS_PER_SECOND; + } else if (line.startsWith(TAG_MEDIA_SEQUENCE)) { + mediaSequence = parseLongAttr(line, REGEX_MEDIA_SEQUENCE); + segmentMediaSequence = mediaSequence; + } else if (line.startsWith(TAG_VERSION)) { + version = parseIntAttr(line, REGEX_VERSION); + } else if (line.startsWith(TAG_DEFINE)) { + String importName = parseOptionalStringAttr(line, REGEX_IMPORT, variableDefinitions); + if (importName != null) { + String value = masterPlaylist.variableDefinitions.get(importName); + if (value != null) { + variableDefinitions.put(importName, value); + } else { + // The master playlist does not declare the imported variable. Ignore. + } + } else { + variableDefinitions.put( + parseStringAttr(line, REGEX_NAME, variableDefinitions), + parseStringAttr(line, REGEX_VALUE, variableDefinitions)); + } + } else if (line.startsWith(TAG_MEDIA_DURATION)) { + segmentDurationUs = + (long) (parseDoubleAttr(line, REGEX_MEDIA_DURATION) * C.MICROS_PER_SECOND); + segmentTitle = parseOptionalStringAttr(line, REGEX_MEDIA_TITLE, "", variableDefinitions); + } else if (line.startsWith(TAG_KEY)) { + String method = parseStringAttr(line, REGEX_METHOD, variableDefinitions); + String keyFormat = + parseOptionalStringAttr(line, REGEX_KEYFORMAT, KEYFORMAT_IDENTITY, variableDefinitions); + fullSegmentEncryptionKeyUri = null; + fullSegmentEncryptionIV = null; + if (METHOD_NONE.equals(method)) { + currentSchemeDatas.clear(); + cachedDrmInitData = null; + } else /* !METHOD_NONE.equals(method) */ { + fullSegmentEncryptionIV = parseOptionalStringAttr(line, REGEX_IV, variableDefinitions); + if (KEYFORMAT_IDENTITY.equals(keyFormat)) { + if (METHOD_AES_128.equals(method)) { + // The segment is fully encrypted using an identity key. + fullSegmentEncryptionKeyUri = parseStringAttr(line, REGEX_URI, variableDefinitions); + } else { + // Do nothing. Samples are encrypted using an identity key, but this is not supported. + // Hopefully, a traditional DRM alternative is also provided. + } + } else { + if (encryptionScheme == null) { + encryptionScheme = parseEncryptionScheme(method); + } + SchemeData schemeData = parseDrmSchemeData(line, keyFormat, variableDefinitions); + if (schemeData != null) { + cachedDrmInitData = null; + currentSchemeDatas.put(keyFormat, schemeData); + } + } + } + } else if (line.startsWith(TAG_BYTERANGE)) { + String byteRange = parseStringAttr(line, REGEX_BYTERANGE, variableDefinitions); + String[] splitByteRange = byteRange.split("@"); + segmentByteRangeLength = Long.parseLong(splitByteRange[0]); + if (splitByteRange.length > 1) { + segmentByteRangeOffset = Long.parseLong(splitByteRange[1]); + } + } else if (line.startsWith(TAG_DISCONTINUITY_SEQUENCE)) { + hasDiscontinuitySequence = true; + playlistDiscontinuitySequence = Integer.parseInt(line.substring(line.indexOf(':') + 1)); + } else if (line.equals(TAG_DISCONTINUITY)) { + relativeDiscontinuitySequence++; + } else if (line.startsWith(TAG_PROGRAM_DATE_TIME)) { + if (playlistStartTimeUs == 0) { + long programDatetimeUs = + C.msToUs(Util.parseXsDateTime(line.substring(line.indexOf(':') + 1))); + playlistStartTimeUs = programDatetimeUs - segmentStartTimeUs; + } + } else if (line.equals(TAG_GAP)) { + hasGapTag = true; + } else if (line.equals(TAG_INDEPENDENT_SEGMENTS)) { + hasIndependentSegmentsTag = true; + } else if (line.equals(TAG_ENDLIST)) { + hasEndTag = true; + } else if (!line.startsWith("#")) { + String segmentEncryptionIV; + if (fullSegmentEncryptionKeyUri == null) { + segmentEncryptionIV = null; + } else if (fullSegmentEncryptionIV != null) { + segmentEncryptionIV = fullSegmentEncryptionIV; + } else { + segmentEncryptionIV = Long.toHexString(segmentMediaSequence); + } + + segmentMediaSequence++; + if (segmentByteRangeLength == C.LENGTH_UNSET) { + segmentByteRangeOffset = 0; + } + + if (cachedDrmInitData == null && !currentSchemeDatas.isEmpty()) { + SchemeData[] schemeDatas = currentSchemeDatas.values().toArray(new SchemeData[0]); + cachedDrmInitData = new DrmInitData(encryptionScheme, schemeDatas); + if (playlistProtectionSchemes == null) { + SchemeData[] playlistSchemeDatas = new SchemeData[schemeDatas.length]; + for (int i = 0; i < schemeDatas.length; i++) { + playlistSchemeDatas[i] = schemeDatas[i].copyWithData(null); + } + playlistProtectionSchemes = new DrmInitData(encryptionScheme, playlistSchemeDatas); + } + } + + segments.add( + new Segment( + replaceVariableReferences(line, variableDefinitions), + initializationSegment, + segmentTitle, + segmentDurationUs, + relativeDiscontinuitySequence, + segmentStartTimeUs, + cachedDrmInitData, + fullSegmentEncryptionKeyUri, + segmentEncryptionIV, + segmentByteRangeOffset, + segmentByteRangeLength, + hasGapTag)); + segmentStartTimeUs += segmentDurationUs; + segmentDurationUs = 0; + segmentTitle = ""; + if (segmentByteRangeLength != C.LENGTH_UNSET) { + segmentByteRangeOffset += segmentByteRangeLength; + } + segmentByteRangeLength = C.LENGTH_UNSET; + hasGapTag = false; + } + } + return new HlsMediaPlaylist( + playlistType, + baseUri, + tags, + startOffsetUs, + playlistStartTimeUs, + hasDiscontinuitySequence, + playlistDiscontinuitySequence, + mediaSequence, + version, + targetDurationUs, + hasIndependentSegmentsTag, + hasEndTag, + /* hasProgramDateTime= */ playlistStartTimeUs != 0, + playlistProtectionSchemes, + segments); + } + + @C.SelectionFlags + private static int parseSelectionFlags(String line) { + int flags = 0; + if (parseOptionalBooleanAttribute(line, REGEX_DEFAULT, false)) { + flags |= C.SELECTION_FLAG_DEFAULT; + } + if (parseOptionalBooleanAttribute(line, REGEX_FORCED, false)) { + flags |= C.SELECTION_FLAG_FORCED; + } + if (parseOptionalBooleanAttribute(line, REGEX_AUTOSELECT, false)) { + flags |= C.SELECTION_FLAG_AUTOSELECT; + } + return flags; + } + + @C.RoleFlags + private static int parseRoleFlags(String line, Map variableDefinitions) { + String concatenatedCharacteristics = + parseOptionalStringAttr(line, REGEX_CHARACTERISTICS, variableDefinitions); + if (TextUtils.isEmpty(concatenatedCharacteristics)) { + return 0; + } + String[] characteristics = Util.split(concatenatedCharacteristics, ","); + @C.RoleFlags int roleFlags = 0; + if (Util.contains(characteristics, "public.accessibility.describes-video")) { + roleFlags |= C.ROLE_FLAG_DESCRIBES_VIDEO; + } + if (Util.contains(characteristics, "public.accessibility.transcribes-spoken-dialog")) { + roleFlags |= C.ROLE_FLAG_TRANSCRIBES_DIALOG; + } + if (Util.contains(characteristics, "public.accessibility.describes-music-and-sound")) { + roleFlags |= C.ROLE_FLAG_DESCRIBES_MUSIC_AND_SOUND; + } + if (Util.contains(characteristics, "public.easy-to-read")) { + roleFlags |= C.ROLE_FLAG_EASY_TO_READ; + } + return roleFlags; + } + + @Nullable + private static SchemeData parseDrmSchemeData( + String line, String keyFormat, Map variableDefinitions) + throws ParserException { + String keyFormatVersions = + parseOptionalStringAttr(line, REGEX_KEYFORMATVERSIONS, "1", variableDefinitions); + if (KEYFORMAT_WIDEVINE_PSSH_BINARY.equals(keyFormat)) { + String uriString = parseStringAttr(line, REGEX_URI, variableDefinitions); + return new SchemeData( + C.WIDEVINE_UUID, + MimeTypes.VIDEO_MP4, + Base64.decode(uriString.substring(uriString.indexOf(',')), Base64.DEFAULT)); + } else if (KEYFORMAT_WIDEVINE_PSSH_JSON.equals(keyFormat)) { + return new SchemeData(C.WIDEVINE_UUID, "hls", Util.getUtf8Bytes(line)); + } else if (KEYFORMAT_PLAYREADY.equals(keyFormat) && "1".equals(keyFormatVersions)) { + String uriString = parseStringAttr(line, REGEX_URI, variableDefinitions); + byte[] data = Base64.decode(uriString.substring(uriString.indexOf(',')), Base64.DEFAULT); + byte[] psshData = PsshAtomUtil.buildPsshAtom(C.PLAYREADY_UUID, data); + return new SchemeData(C.PLAYREADY_UUID, MimeTypes.VIDEO_MP4, psshData); + } + return null; + } + + private static String parseEncryptionScheme(String method) { + return METHOD_SAMPLE_AES_CENC.equals(method) || METHOD_SAMPLE_AES_CTR.equals(method) + ? C.CENC_TYPE_cenc + : C.CENC_TYPE_cbcs; + } + + private static int parseIntAttr(String line, Pattern pattern) throws ParserException { + return Integer.parseInt(parseStringAttr(line, pattern, Collections.emptyMap())); + } + + private static int parseOptionalIntAttr(String line, Pattern pattern, int defaultValue) { + Matcher matcher = pattern.matcher(line); + if (matcher.find()) { + return Integer.parseInt(matcher.group(1)); + } + return defaultValue; + } + + private static long parseLongAttr(String line, Pattern pattern) throws ParserException { + return Long.parseLong(parseStringAttr(line, pattern, Collections.emptyMap())); + } + + private static double parseDoubleAttr(String line, Pattern pattern) throws ParserException { + return Double.parseDouble(parseStringAttr(line, pattern, Collections.emptyMap())); + } + + private static String parseStringAttr( + String line, Pattern pattern, Map variableDefinitions) + throws ParserException { + String value = parseOptionalStringAttr(line, pattern, variableDefinitions); + if (value != null) { + return value; + } else { + throw new ParserException("Couldn't match " + pattern.pattern() + " in " + line); + } + } + + private static @Nullable String parseOptionalStringAttr( + String line, Pattern pattern, Map variableDefinitions) { + return parseOptionalStringAttr(line, pattern, null, variableDefinitions); + } + + private static @PolyNull String parseOptionalStringAttr( + String line, + Pattern pattern, + @PolyNull String defaultValue, + Map variableDefinitions) { + Matcher matcher = pattern.matcher(line); + String value = matcher.find() ? matcher.group(1) : defaultValue; + return variableDefinitions.isEmpty() || value == null + ? value + : replaceVariableReferences(value, variableDefinitions); + } + + private static String replaceVariableReferences( + String string, Map variableDefinitions) { + Matcher matcher = REGEX_VARIABLE_REFERENCE.matcher(string); + // TODO: Replace StringBuffer with StringBuilder once Java 9 is available. + StringBuffer stringWithReplacements = new StringBuffer(); + while (matcher.find()) { + String groupName = matcher.group(1); + if (variableDefinitions.containsKey(groupName)) { + matcher.appendReplacement( + stringWithReplacements, Matcher.quoteReplacement(variableDefinitions.get(groupName))); + } else { + // The variable is not defined. The value is ignored. + } + } + matcher.appendTail(stringWithReplacements); + return stringWithReplacements.toString(); + } + + private static boolean parseOptionalBooleanAttribute( + String line, Pattern pattern, boolean defaultValue) { + Matcher matcher = pattern.matcher(line); + if (matcher.find()) { + return matcher.group(1).equals(BOOLEAN_TRUE); + } + return defaultValue; + } + + private static Pattern compileBooleanAttrPattern(String attribute) { + return Pattern.compile(attribute + "=(" + BOOLEAN_FALSE + "|" + BOOLEAN_TRUE + ")"); + } + + private static class LineIterator { + + private final BufferedReader reader; + private final Queue extraLines; + + @Nullable private String next; + + public LineIterator(Queue extraLines, BufferedReader reader) { + this.extraLines = extraLines; + this.reader = reader; + } + + @EnsuresNonNullIf(expression = "next", result = true) + public boolean hasNext() throws IOException { + if (next != null) { + return true; + } + if (!extraLines.isEmpty()) { + next = Assertions.checkNotNull(extraLines.poll()); + return true; + } + while ((next = reader.readLine()) != null) { + next = next.trim(); + if (!next.isEmpty()) { + return true; + } + } + return false; + } + + /** Return the next line, or throw {@link NoSuchElementException} if none. */ + public String next() throws IOException { + if (hasNext()) { + String result = next; + next = null; + return result; + } else { + throw new NoSuchElementException(); + } + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistParserFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistParserFactory.java new file mode 100644 index 0000000000..deb1daf8a7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistParserFactory.java @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.ParsingLoadable; + +/** Factory for {@link HlsPlaylist} parsers. */ +public interface HlsPlaylistParserFactory { + + /** + * Returns a stand-alone playlist parser. Playlists parsed by the returned parser do not inherit + * any attributes from other playlists. + */ + ParsingLoadable.Parser createPlaylistParser(); + + /** + * Returns a playlist parser for playlists that were referenced by the given {@link + * HlsMasterPlaylist}. Returned {@link HlsMediaPlaylist} instances may inherit attributes from + * {@code masterPlaylist}. + * + * @param masterPlaylist The master playlist that referenced any parsed media playlists. + * @return A parser for HLS playlists. + */ + ParsingLoadable.Parser createPlaylistParser(HlsMasterPlaylist masterPlaylist); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistTracker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistTracker.java new file mode 100644 index 0000000000..69f8cb02c9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistTracker.java @@ -0,0 +1,226 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.HlsDataSourceFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy; +import java.io.IOException; + +/** + * Tracks playlists associated to an HLS stream and provides snapshots. + * + *

The playlist tracker is responsible for exposing the seeking window, which is defined by the + * segments that one of the playlists exposes. This playlist is called primary and needs to be + * periodically refreshed in the case of live streams. Note that the primary playlist is one of the + * media playlists while the master playlist is an optional kind of playlist defined by the HLS + * specification (RFC 8216). + * + *

Playlist loads might encounter errors. The tracker may choose to blacklist them to ensure a + * primary playlist is always available. + */ +public interface HlsPlaylistTracker { + + /** Factory for {@link HlsPlaylistTracker} instances. */ + interface Factory { + + /** + * Creates a new tracker instance. + * + * @param dataSourceFactory The {@link HlsDataSourceFactory} to use for playlist loading. + * @param loadErrorHandlingPolicy The {@link LoadErrorHandlingPolicy} for playlist load errors. + * @param playlistParserFactory The {@link HlsPlaylistParserFactory} for playlist parsing. + */ + HlsPlaylistTracker createTracker( + HlsDataSourceFactory dataSourceFactory, + LoadErrorHandlingPolicy loadErrorHandlingPolicy, + HlsPlaylistParserFactory playlistParserFactory); + } + + /** Listener for primary playlist changes. */ + interface PrimaryPlaylistListener { + + /** + * Called when the primary playlist changes. + * + * @param mediaPlaylist The primary playlist new snapshot. + */ + void onPrimaryPlaylistRefreshed(HlsMediaPlaylist mediaPlaylist); + } + + /** Called on playlist loading events. */ + interface PlaylistEventListener { + + /** + * Called a playlist changes. + */ + void onPlaylistChanged(); + + /** + * Called if an error is encountered while loading a playlist. + * + * @param url The loaded url that caused the error. + * @param blacklistDurationMs The duration for which the playlist should be blacklisted. Or + * {@link C#TIME_UNSET} if the playlist should not be blacklisted. + * @return True if blacklisting did not encounter errors. False otherwise. + */ + boolean onPlaylistError(Uri url, long blacklistDurationMs); + } + + /** Thrown when a playlist is considered to be stuck due to a server side error. */ + final class PlaylistStuckException extends IOException { + + /** The url of the stuck playlist. */ + public final Uri url; + + /** + * Creates an instance. + * + * @param url See {@link #url}. + */ + public PlaylistStuckException(Uri url) { + this.url = url; + } + } + + /** Thrown when the media sequence of a new snapshot indicates the server has reset. */ + final class PlaylistResetException extends IOException { + + /** The url of the reset playlist. */ + public final Uri url; + + /** + * Creates an instance. + * + * @param url See {@link #url}. + */ + public PlaylistResetException(Uri url) { + this.url = url; + } + } + + /** + * Starts the playlist tracker. + * + *

Must be called from the playback thread. A tracker may be restarted after a {@link #stop()} + * call. + * + * @param initialPlaylistUri Uri of the HLS stream. Can point to a media playlist or a master + * playlist. + * @param eventDispatcher A dispatcher to notify of events. + * @param listener A callback for the primary playlist change events. + */ + void start( + Uri initialPlaylistUri, EventDispatcher eventDispatcher, PrimaryPlaylistListener listener); + + /** + * Stops the playlist tracker and releases any acquired resources. + * + *

Must be called once per {@link #start} call. + */ + void stop(); + + /** + * Registers a listener to receive events from the playlist tracker. + * + * @param listener The listener. + */ + void addListener(PlaylistEventListener listener); + + /** + * Unregisters a listener. + * + * @param listener The listener to unregister. + */ + void removeListener(PlaylistEventListener listener); + + /** + * Returns the master playlist. + * + *

If the uri passed to {@link #start} points to a media playlist, an {@link HlsMasterPlaylist} + * with a single variant for said media playlist is returned. + * + * @return The master playlist. Null if the initial playlist has yet to be loaded. + */ + @Nullable + HlsMasterPlaylist getMasterPlaylist(); + + /** + * Returns the most recent snapshot available of the playlist referenced by the provided {@link + * Uri}. + * + * @param url The {@link Uri} corresponding to the requested media playlist. + * @param isForPlayback Whether the caller might use the snapshot to request media segments for + * playback. If true, the primary playlist may be updated to the one requested. + * @return The most recent snapshot of the playlist referenced by the provided {@link Uri}. May be + * null if no snapshot has been loaded yet. + */ + @Nullable + HlsMediaPlaylist getPlaylistSnapshot(Uri url, boolean isForPlayback); + + /** + * Returns the start time of the first loaded primary playlist, or {@link C#TIME_UNSET} if no + * media playlist has been loaded. + */ + long getInitialStartTimeUs(); + + /** + * Returns whether the snapshot of the playlist referenced by the provided {@link Uri} is valid, + * meaning all the segments referenced by the playlist are expected to be available. If the + * playlist is not valid then some of the segments may no longer be available. + * + * @param url The {@link Uri}. + * @return Whether the snapshot of the playlist referenced by the provided {@link Uri} is valid. + */ + boolean isSnapshotValid(Uri url); + + /** + * If the tracker is having trouble refreshing the master playlist or the primary playlist, this + * method throws the underlying error. Otherwise, does nothing. + * + * @throws IOException The underlying error. + */ + void maybeThrowPrimaryPlaylistRefreshError() throws IOException; + + /** + * If the playlist is having trouble refreshing the playlist referenced by the given {@link Uri}, + * this method throws the underlying error. + * + * @param url The {@link Uri}. + * @throws IOException The underyling error. + */ + void maybeThrowPlaylistRefreshError(Uri url) throws IOException; + + /** + * Requests a playlist refresh and whitelists it. + * + *

The playlist tracker may choose the delay the playlist refresh. The request is discarded if + * a refresh was already pending. + * + * @param url The {@link Uri} of the playlist to be refreshed. + */ + void refreshPlaylist(Uri url); + + /** + * Returns whether the tracked playlists describe a live stream. + * + * @return True if the content is live. False otherwise. + */ + boolean isLive(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/package-info.java new file mode 100644 index 0000000000..be9f862644 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/source/hls/playlist/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.source.hls.playlist; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/CaptionStyleCompat.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/CaptionStyleCompat.java new file mode 100644 index 0000000000..c9acc1c8f5 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/CaptionStyleCompat.java @@ -0,0 +1,184 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import android.annotation.TargetApi; +import android.graphics.Color; +import android.graphics.Typeface; +import android.view.accessibility.CaptioningManager; +import android.view.accessibility.CaptioningManager.CaptionStyle; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * A compatibility wrapper for {@link CaptionStyle}. + */ +public final class CaptionStyleCompat { + + /** + * The type of edge, which may be none. One of {@link #EDGE_TYPE_NONE}, {@link + * #EDGE_TYPE_OUTLINE}, {@link #EDGE_TYPE_DROP_SHADOW}, {@link #EDGE_TYPE_RAISED} or {@link + * #EDGE_TYPE_DEPRESSED}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + EDGE_TYPE_NONE, + EDGE_TYPE_OUTLINE, + EDGE_TYPE_DROP_SHADOW, + EDGE_TYPE_RAISED, + EDGE_TYPE_DEPRESSED + }) + public @interface EdgeType {} + /** + * Edge type value specifying no character edges. + */ + public static final int EDGE_TYPE_NONE = 0; + /** + * Edge type value specifying uniformly outlined character edges. + */ + public static final int EDGE_TYPE_OUTLINE = 1; + /** + * Edge type value specifying drop-shadowed character edges. + */ + public static final int EDGE_TYPE_DROP_SHADOW = 2; + /** + * Edge type value specifying raised bevel character edges. + */ + public static final int EDGE_TYPE_RAISED = 3; + /** + * Edge type value specifying depressed bevel character edges. + */ + public static final int EDGE_TYPE_DEPRESSED = 4; + + /** + * Use color setting specified by the track and fallback to default caption style. + */ + public static final int USE_TRACK_COLOR_SETTINGS = 1; + + /** Default caption style. */ + public static final CaptionStyleCompat DEFAULT = + new CaptionStyleCompat( + Color.WHITE, + Color.BLACK, + Color.TRANSPARENT, + EDGE_TYPE_NONE, + Color.WHITE, + /* typeface= */ null); + + /** + * The preferred foreground color. + */ + public final int foregroundColor; + + /** + * The preferred background color. + */ + public final int backgroundColor; + + /** + * The preferred window color. + */ + public final int windowColor; + + /** + * The preferred edge type. One of: + *

    + *
  • {@link #EDGE_TYPE_NONE} + *
  • {@link #EDGE_TYPE_OUTLINE} + *
  • {@link #EDGE_TYPE_DROP_SHADOW} + *
  • {@link #EDGE_TYPE_RAISED} + *
  • {@link #EDGE_TYPE_DEPRESSED} + *
+ */ + @EdgeType public final int edgeType; + + /** + * The preferred edge color, if using an edge type other than {@link #EDGE_TYPE_NONE}. + */ + public final int edgeColor; + + /** The preferred typeface, or {@code null} if unspecified. */ + @Nullable public final Typeface typeface; + + /** + * Creates a {@link CaptionStyleCompat} equivalent to a provided {@link CaptionStyle}. + * + * @param captionStyle A {@link CaptionStyle}. + * @return The equivalent {@link CaptionStyleCompat}. + */ + @TargetApi(19) + public static CaptionStyleCompat createFromCaptionStyle( + CaptioningManager.CaptionStyle captionStyle) { + if (Util.SDK_INT >= 21) { + return createFromCaptionStyleV21(captionStyle); + } else { + // Note - Any caller must be on at least API level 19 or greater (because CaptionStyle did + // not exist in earlier API levels). + return createFromCaptionStyleV19(captionStyle); + } + } + + /** + * @param foregroundColor See {@link #foregroundColor}. + * @param backgroundColor See {@link #backgroundColor}. + * @param windowColor See {@link #windowColor}. + * @param edgeType See {@link #edgeType}. + * @param edgeColor See {@link #edgeColor}. + * @param typeface See {@link #typeface}. + */ + public CaptionStyleCompat( + int foregroundColor, + int backgroundColor, + int windowColor, + @EdgeType int edgeType, + int edgeColor, + @Nullable Typeface typeface) { + this.foregroundColor = foregroundColor; + this.backgroundColor = backgroundColor; + this.windowColor = windowColor; + this.edgeType = edgeType; + this.edgeColor = edgeColor; + this.typeface = typeface; + } + + @TargetApi(19) + @SuppressWarnings("ResourceType") + private static CaptionStyleCompat createFromCaptionStyleV19( + CaptioningManager.CaptionStyle captionStyle) { + return new CaptionStyleCompat( + captionStyle.foregroundColor, captionStyle.backgroundColor, Color.TRANSPARENT, + captionStyle.edgeType, captionStyle.edgeColor, captionStyle.getTypeface()); + } + + @TargetApi(21) + @SuppressWarnings("ResourceType") + private static CaptionStyleCompat createFromCaptionStyleV21( + CaptioningManager.CaptionStyle captionStyle) { + return new CaptionStyleCompat( + captionStyle.hasForegroundColor() ? captionStyle.foregroundColor : DEFAULT.foregroundColor, + captionStyle.hasBackgroundColor() ? captionStyle.backgroundColor : DEFAULT.backgroundColor, + captionStyle.hasWindowColor() ? captionStyle.windowColor : DEFAULT.windowColor, + captionStyle.hasEdgeType() ? captionStyle.edgeType : DEFAULT.edgeType, + captionStyle.hasEdgeColor() ? captionStyle.edgeColor : DEFAULT.edgeColor, + captionStyle.getTypeface()); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/Cue.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/Cue.java new file mode 100644 index 0000000000..71627781c1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/Cue.java @@ -0,0 +1,435 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import android.graphics.Bitmap; +import android.graphics.Color; +import android.text.Layout.Alignment; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Contains information about a specific cue, including textual content and formatting data. + */ +public class Cue { + + /** The empty cue. */ + public static final Cue EMPTY = new Cue(""); + + /** An unset position, width or size. */ + // Note: We deliberately don't use Float.MIN_VALUE because it's positive & very close to zero. + public static final float DIMEN_UNSET = -Float.MAX_VALUE; + + /** + * The type of anchor, which may be unset. One of {@link #TYPE_UNSET}, {@link #ANCHOR_TYPE_START}, + * {@link #ANCHOR_TYPE_MIDDLE} or {@link #ANCHOR_TYPE_END}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({TYPE_UNSET, ANCHOR_TYPE_START, ANCHOR_TYPE_MIDDLE, ANCHOR_TYPE_END}) + public @interface AnchorType {} + + /** + * An unset anchor or line type value. + */ + public static final int TYPE_UNSET = Integer.MIN_VALUE; + + /** + * Anchors the left (for horizontal positions) or top (for vertical positions) edge of the cue + * box. + */ + public static final int ANCHOR_TYPE_START = 0; + + /** + * Anchors the middle of the cue box. + */ + public static final int ANCHOR_TYPE_MIDDLE = 1; + + /** + * Anchors the right (for horizontal positions) or bottom (for vertical positions) edge of the cue + * box. + */ + public static final int ANCHOR_TYPE_END = 2; + + /** + * The type of line, which may be unset. One of {@link #TYPE_UNSET}, {@link #LINE_TYPE_FRACTION} + * or {@link #LINE_TYPE_NUMBER}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({TYPE_UNSET, LINE_TYPE_FRACTION, LINE_TYPE_NUMBER}) + public @interface LineType {} + + /** + * Value for {@link #lineType} when {@link #line} is a fractional position. + */ + public static final int LINE_TYPE_FRACTION = 0; + + /** + * Value for {@link #lineType} when {@link #line} is a line number. + */ + public static final int LINE_TYPE_NUMBER = 1; + + /** + * The type of default text size for this cue, which may be unset. One of {@link #TYPE_UNSET}, + * {@link #TEXT_SIZE_TYPE_FRACTIONAL}, {@link #TEXT_SIZE_TYPE_FRACTIONAL_IGNORE_PADDING} or {@link + * #TEXT_SIZE_TYPE_ABSOLUTE}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + TYPE_UNSET, + TEXT_SIZE_TYPE_FRACTIONAL, + TEXT_SIZE_TYPE_FRACTIONAL_IGNORE_PADDING, + TEXT_SIZE_TYPE_ABSOLUTE + }) + public @interface TextSizeType {} + + /** Text size is measured as a fraction of the viewport size minus the view padding. */ + public static final int TEXT_SIZE_TYPE_FRACTIONAL = 0; + + /** Text size is measured as a fraction of the viewport size, ignoring the view padding */ + public static final int TEXT_SIZE_TYPE_FRACTIONAL_IGNORE_PADDING = 1; + + /** Text size is measured in number of pixels. */ + public static final int TEXT_SIZE_TYPE_ABSOLUTE = 2; + + /** + * The cue text, or null if this is an image cue. Note the {@link CharSequence} may be decorated + * with styling spans. + */ + @Nullable public final CharSequence text; + + /** The alignment of the cue text within the cue box, or null if the alignment is undefined. */ + @Nullable public final Alignment textAlignment; + + /** The cue image, or null if this is a text cue. */ + @Nullable public final Bitmap bitmap; + + /** + * The position of the {@link #lineAnchor} of the cue box within the viewport in the direction + * orthogonal to the writing direction, or {@link #DIMEN_UNSET}. When set, the interpretation of + * the value depends on the value of {@link #lineType}. + *

+ * For horizontal text and {@link #lineType} equal to {@link #LINE_TYPE_FRACTION}, this is the + * fractional vertical position relative to the top of the viewport. + */ + public final float line; + + /** + * The type of the {@link #line} value. + * + *

{@link #LINE_TYPE_FRACTION} indicates that {@link #line} is a fractional position within the + * viewport. + * + *

{@link #LINE_TYPE_NUMBER} indicates that {@link #line} is a line number, where the size of + * each line is taken to be the size of the first line of the cue. When {@link #line} is greater + * than or equal to 0 lines count from the start of the viewport, with 0 indicating zero offset + * from the start edge. When {@link #line} is negative lines count from the end of the viewport, + * with -1 indicating zero offset from the end edge. For horizontal text the line spacing is the + * height of the first line of the cue, and the start and end of the viewport are the top and + * bottom respectively. + * + *

Note that it's particularly important to consider the effect of {@link #lineAnchor} when + * using {@link #LINE_TYPE_NUMBER}. {@code (line == 0 && lineAnchor == ANCHOR_TYPE_START)} + * positions a (potentially multi-line) cue at the very top of the viewport. {@code (line == -1 && + * lineAnchor == ANCHOR_TYPE_END)} positions a (potentially multi-line) cue at the very bottom of + * the viewport. {@code (line == 0 && lineAnchor == ANCHOR_TYPE_END)} and {@code (line == -1 && + * lineAnchor == ANCHOR_TYPE_START)} position cues entirely outside of the viewport. {@code (line + * == 1 && lineAnchor == ANCHOR_TYPE_END)} positions a cue so that only the last line is visible + * at the top of the viewport. {@code (line == -2 && lineAnchor == ANCHOR_TYPE_START)} position a + * cue so that only its first line is visible at the bottom of the viewport. + */ + public final @LineType int lineType; + + /** + * The cue box anchor positioned by {@link #line}. One of {@link #ANCHOR_TYPE_START}, {@link + * #ANCHOR_TYPE_MIDDLE}, {@link #ANCHOR_TYPE_END} and {@link #TYPE_UNSET}. + * + *

For the normal case of horizontal text, {@link #ANCHOR_TYPE_START}, {@link + * #ANCHOR_TYPE_MIDDLE} and {@link #ANCHOR_TYPE_END} correspond to the top, middle and bottom of + * the cue box respectively. + */ + public final @AnchorType int lineAnchor; + + /** + * The fractional position of the {@link #positionAnchor} of the cue box within the viewport in + * the direction orthogonal to {@link #line}, or {@link #DIMEN_UNSET}. + *

+ * For horizontal text, this is the horizontal position relative to the left of the viewport. Note + * that positioning is relative to the left of the viewport even in the case of right-to-left + * text. + */ + public final float position; + + /** + * The cue box anchor positioned by {@link #position}. One of {@link #ANCHOR_TYPE_START}, {@link + * #ANCHOR_TYPE_MIDDLE}, {@link #ANCHOR_TYPE_END} and {@link #TYPE_UNSET}. + * + *

For the normal case of horizontal text, {@link #ANCHOR_TYPE_START}, {@link + * #ANCHOR_TYPE_MIDDLE} and {@link #ANCHOR_TYPE_END} correspond to the left, middle and right of + * the cue box respectively. + */ + public final @AnchorType int positionAnchor; + + /** + * The size of the cue box in the writing direction specified as a fraction of the viewport size + * in that direction, or {@link #DIMEN_UNSET}. + */ + public final float size; + + /** + * The bitmap height as a fraction of the of the viewport size, or {@link #DIMEN_UNSET} if the + * bitmap should be displayed at its natural height given the bitmap dimensions and the specified + * {@link #size}. + */ + public final float bitmapHeight; + + /** + * Specifies whether or not the {@link #windowColor} property is set. + */ + public final boolean windowColorSet; + + /** + * The fill color of the window. + */ + public final int windowColor; + + /** + * The default text size type for this cue's text, or {@link #TYPE_UNSET} if this cue has no + * default text size. + */ + public final @TextSizeType int textSizeType; + + /** + * The default text size for this cue's text, or {@link #DIMEN_UNSET} if this cue has no default + * text size. + */ + public final float textSize; + + /** + * Creates an image cue. + * + * @param bitmap See {@link #bitmap}. + * @param horizontalPosition The position of the horizontal anchor within the viewport, expressed + * as a fraction of the viewport width. + * @param horizontalPositionAnchor The horizontal anchor. One of {@link #ANCHOR_TYPE_START}, + * {@link #ANCHOR_TYPE_MIDDLE}, {@link #ANCHOR_TYPE_END} and {@link #TYPE_UNSET}. + * @param verticalPosition The position of the vertical anchor within the viewport, expressed as a + * fraction of the viewport height. + * @param verticalPositionAnchor The vertical anchor. One of {@link #ANCHOR_TYPE_START}, {@link + * #ANCHOR_TYPE_MIDDLE}, {@link #ANCHOR_TYPE_END} and {@link #TYPE_UNSET}. + * @param width The width of the cue as a fraction of the viewport width. + * @param height The height of the cue as a fraction of the viewport height, or {@link + * #DIMEN_UNSET} if the bitmap should be displayed at its natural height for the specified + * {@code width}. + */ + public Cue( + Bitmap bitmap, + float horizontalPosition, + @AnchorType int horizontalPositionAnchor, + float verticalPosition, + @AnchorType int verticalPositionAnchor, + float width, + float height) { + this( + /* text= */ null, + /* textAlignment= */ null, + bitmap, + verticalPosition, + /* lineType= */ LINE_TYPE_FRACTION, + verticalPositionAnchor, + horizontalPosition, + horizontalPositionAnchor, + /* textSizeType= */ TYPE_UNSET, + /* textSize= */ DIMEN_UNSET, + width, + height, + /* windowColorSet= */ false, + /* windowColor= */ Color.BLACK); + } + + /** + * Creates a text cue whose {@link #textAlignment} is null, whose type parameters are set to + * {@link #TYPE_UNSET} and whose dimension parameters are set to {@link #DIMEN_UNSET}. + * + * @param text See {@link #text}. + */ + public Cue(CharSequence text) { + this( + text, + /* textAlignment= */ null, + /* line= */ DIMEN_UNSET, + /* lineType= */ TYPE_UNSET, + /* lineAnchor= */ TYPE_UNSET, + /* position= */ DIMEN_UNSET, + /* positionAnchor= */ TYPE_UNSET, + /* size= */ DIMEN_UNSET); + } + + /** + * Creates a text cue. + * + * @param text See {@link #text}. + * @param textAlignment See {@link #textAlignment}. + * @param line See {@link #line}. + * @param lineType See {@link #lineType}. + * @param lineAnchor See {@link #lineAnchor}. + * @param position See {@link #position}. + * @param positionAnchor See {@link #positionAnchor}. + * @param size See {@link #size}. + */ + public Cue( + CharSequence text, + @Nullable Alignment textAlignment, + float line, + @LineType int lineType, + @AnchorType int lineAnchor, + float position, + @AnchorType int positionAnchor, + float size) { + this( + text, + textAlignment, + line, + lineType, + lineAnchor, + position, + positionAnchor, + size, + /* windowColorSet= */ false, + /* windowColor= */ Color.BLACK); + } + + /** + * Creates a text cue. + * + * @param text See {@link #text}. + * @param textAlignment See {@link #textAlignment}. + * @param line See {@link #line}. + * @param lineType See {@link #lineType}. + * @param lineAnchor See {@link #lineAnchor}. + * @param position See {@link #position}. + * @param positionAnchor See {@link #positionAnchor}. + * @param size See {@link #size}. + * @param textSizeType See {@link #textSizeType}. + * @param textSize See {@link #textSize}. + */ + public Cue( + CharSequence text, + @Nullable Alignment textAlignment, + float line, + @LineType int lineType, + @AnchorType int lineAnchor, + float position, + @AnchorType int positionAnchor, + float size, + @TextSizeType int textSizeType, + float textSize) { + this( + text, + textAlignment, + /* bitmap= */ null, + line, + lineType, + lineAnchor, + position, + positionAnchor, + textSizeType, + textSize, + size, + /* bitmapHeight= */ DIMEN_UNSET, + /* windowColorSet= */ false, + /* windowColor= */ Color.BLACK); + } + + /** + * Creates a text cue. + * + * @param text See {@link #text}. + * @param textAlignment See {@link #textAlignment}. + * @param line See {@link #line}. + * @param lineType See {@link #lineType}. + * @param lineAnchor See {@link #lineAnchor}. + * @param position See {@link #position}. + * @param positionAnchor See {@link #positionAnchor}. + * @param size See {@link #size}. + * @param windowColorSet See {@link #windowColorSet}. + * @param windowColor See {@link #windowColor}. + */ + public Cue( + CharSequence text, + @Nullable Alignment textAlignment, + float line, + @LineType int lineType, + @AnchorType int lineAnchor, + float position, + @AnchorType int positionAnchor, + float size, + boolean windowColorSet, + int windowColor) { + this( + text, + textAlignment, + /* bitmap= */ null, + line, + lineType, + lineAnchor, + position, + positionAnchor, + /* textSizeType= */ TYPE_UNSET, + /* textSize= */ DIMEN_UNSET, + size, + /* bitmapHeight= */ DIMEN_UNSET, + windowColorSet, + windowColor); + } + + private Cue( + @Nullable CharSequence text, + @Nullable Alignment textAlignment, + @Nullable Bitmap bitmap, + float line, + @LineType int lineType, + @AnchorType int lineAnchor, + float position, + @AnchorType int positionAnchor, + @TextSizeType int textSizeType, + float textSize, + float size, + float bitmapHeight, + boolean windowColorSet, + int windowColor) { + this.text = text; + this.textAlignment = textAlignment; + this.bitmap = bitmap; + this.line = line; + this.lineType = lineType; + this.lineAnchor = lineAnchor; + this.position = position; + this.positionAnchor = positionAnchor; + this.size = size; + this.bitmapHeight = bitmapHeight; + this.windowColorSet = windowColorSet; + this.windowColor = windowColor; + this.textSizeType = textSizeType; + this.textSize = textSize; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SimpleSubtitleDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SimpleSubtitleDecoder.java new file mode 100644 index 0000000000..b58bb1daea --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SimpleSubtitleDecoder.java @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.SimpleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.nio.ByteBuffer; + +/** + * Base class for subtitle parsers that use their own decode thread. + */ +public abstract class SimpleSubtitleDecoder extends + SimpleDecoder implements + SubtitleDecoder { + + private final String name; + + /** @param name The name of the decoder. */ + @SuppressWarnings("initialization:method.invocation.invalid") + protected SimpleSubtitleDecoder(String name) { + super(new SubtitleInputBuffer[2], new SubtitleOutputBuffer[2]); + this.name = name; + setInitialInputBufferSize(1024); + } + + @Override + public final String getName() { + return name; + } + + @Override + public void setPositionUs(long timeUs) { + // Do nothing + } + + @Override + protected final SubtitleInputBuffer createInputBuffer() { + return new SubtitleInputBuffer(); + } + + @Override + protected final SubtitleOutputBuffer createOutputBuffer() { + return new SimpleSubtitleOutputBuffer(this); + } + + @Override + protected final SubtitleDecoderException createUnexpectedDecodeException(Throwable error) { + return new SubtitleDecoderException("Unexpected decode error", error); + } + + @Override + protected final void releaseOutputBuffer(SubtitleOutputBuffer buffer) { + super.releaseOutputBuffer(buffer); + } + + @SuppressWarnings("ByteBufferBackingArray") + @Override + @Nullable + protected final SubtitleDecoderException decode( + SubtitleInputBuffer inputBuffer, SubtitleOutputBuffer outputBuffer, boolean reset) { + try { + ByteBuffer inputData = Assertions.checkNotNull(inputBuffer.data); + Subtitle subtitle = decode(inputData.array(), inputData.limit(), reset); + outputBuffer.setContent(inputBuffer.timeUs, subtitle, inputBuffer.subsampleOffsetUs); + // Clear BUFFER_FLAG_DECODE_ONLY (see [Internal: b/27893809]). + outputBuffer.clearFlag(C.BUFFER_FLAG_DECODE_ONLY); + return null; + } catch (SubtitleDecoderException e) { + return e; + } + } + + /** + * Decodes data into a {@link Subtitle}. + * + * @param data An array holding the data to be decoded, starting at position 0. + * @param size The size of the data to be decoded. + * @param reset Whether the decoder must be reset before decoding. + * @return The decoded {@link Subtitle}. + * @throws SubtitleDecoderException If a decoding error occurs. + */ + protected abstract Subtitle decode(byte[] data, int size, boolean reset) + throws SubtitleDecoderException; + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SimpleSubtitleOutputBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SimpleSubtitleOutputBuffer.java new file mode 100644 index 0000000000..794b6c72f4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SimpleSubtitleOutputBuffer.java @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +/** + * A {@link SubtitleOutputBuffer} for decoders that extend {@link SimpleSubtitleDecoder}. + */ +/* package */ final class SimpleSubtitleOutputBuffer extends SubtitleOutputBuffer { + + private final SimpleSubtitleDecoder owner; + + /** + * @param owner The decoder that owns this buffer. + */ + public SimpleSubtitleOutputBuffer(SimpleSubtitleDecoder owner) { + super(); + this.owner = owner; + } + + @Override + public final void release() { + owner.releaseOutputBuffer(this); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/Subtitle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/Subtitle.java new file mode 100644 index 0000000000..0c2a259f37 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/Subtitle.java @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.util.List; + +/** + * A subtitle consisting of timed {@link Cue}s. + */ +public interface Subtitle { + + /** + * Returns the index of the first event that occurs after a given time (exclusive). + * + * @param timeUs The time in microseconds. + * @return The index of the next event, or {@link C#INDEX_UNSET} if there are no events after the + * specified time. + */ + int getNextEventTimeIndex(long timeUs); + + /** + * Returns the number of event times, where events are defined as points in time at which the cues + * returned by {@link #getCues(long)} changes. + * + * @return The number of event times. + */ + int getEventTimeCount(); + + /** + * Returns the event time at a specified index. + * + * @param index The index of the event time to obtain. + * @return The event time in microseconds. + */ + long getEventTime(int index); + + /** + * Retrieve the cues that should be displayed at a given time. + * + * @param timeUs The time in microseconds. + * @return A list of cues that should be displayed, possibly empty. + */ + List getCues(long timeUs); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoder.java new file mode 100644 index 0000000000..dcf1a0c254 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoder.java @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.Decoder; + +/** + * Decodes {@link Subtitle}s from {@link SubtitleInputBuffer}s. + */ +public interface SubtitleDecoder extends + Decoder { + + /** + * Informs the decoder of the current playback position. + *

+ * Must be called prior to each attempt to dequeue output buffers from the decoder. + * + * @param positionUs The current playback position in microseconds. + */ + void setPositionUs(long positionUs); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderException.java new file mode 100644 index 0000000000..9ee15188b0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderException.java @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +/** + * Thrown when an error occurs decoding subtitle data. + */ +public class SubtitleDecoderException extends Exception { + + /** + * @param message The detail message for this exception. + */ + public SubtitleDecoderException(String message) { + super(message); + } + + /** @param cause The cause of this exception. */ + public SubtitleDecoderException(Exception cause) { + super(cause); + } + + /** + * @param message The detail message for this exception. + * @param cause The cause of this exception. + */ + public SubtitleDecoderException(String message, Throwable cause) { + super(message, cause); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderFactory.java new file mode 100644 index 0000000000..2fb0200f0d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleDecoderFactory.java @@ -0,0 +1,126 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea.Cea608Decoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea.Cea708Decoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.dvb.DvbDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.pgs.PgsDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.ssa.SsaDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.subrip.SubripDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.ttml.TtmlDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.tx3g.Tx3gDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt.Mp4WebvttDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt.WebvttDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; + +/** + * A factory for {@link SubtitleDecoder} instances. + */ +public interface SubtitleDecoderFactory { + + /** + * Returns whether the factory is able to instantiate a {@link SubtitleDecoder} for the given + * {@link Format}. + * + * @param format The {@link Format}. + * @return Whether the factory can instantiate a suitable {@link SubtitleDecoder}. + */ + boolean supportsFormat(Format format); + + /** + * Creates a {@link SubtitleDecoder} for the given {@link Format}. + * + * @param format The {@link Format}. + * @return A new {@link SubtitleDecoder}. + * @throws IllegalArgumentException If the {@link Format} is not supported. + */ + SubtitleDecoder createDecoder(Format format); + + /** + * Default {@link SubtitleDecoderFactory} implementation. + * + *

The formats supported by this factory are: + * + *

    + *
  • WebVTT ({@link WebvttDecoder}) + *
  • WebVTT (MP4) ({@link Mp4WebvttDecoder}) + *
  • TTML ({@link TtmlDecoder}) + *
  • SubRip ({@link SubripDecoder}) + *
  • SSA/ASS ({@link SsaDecoder}) + *
  • TX3G ({@link Tx3gDecoder}) + *
  • Cea608 ({@link Cea608Decoder}) + *
  • Cea708 ({@link Cea708Decoder}) + *
  • DVB ({@link DvbDecoder}) + *
  • PGS ({@link PgsDecoder}) + *
+ */ + SubtitleDecoderFactory DEFAULT = + new SubtitleDecoderFactory() { + + @Override + public boolean supportsFormat(Format format) { + @Nullable String mimeType = format.sampleMimeType; + return MimeTypes.TEXT_VTT.equals(mimeType) + || MimeTypes.TEXT_SSA.equals(mimeType) + || MimeTypes.APPLICATION_TTML.equals(mimeType) + || MimeTypes.APPLICATION_MP4VTT.equals(mimeType) + || MimeTypes.APPLICATION_SUBRIP.equals(mimeType) + || MimeTypes.APPLICATION_TX3G.equals(mimeType) + || MimeTypes.APPLICATION_CEA608.equals(mimeType) + || MimeTypes.APPLICATION_MP4CEA608.equals(mimeType) + || MimeTypes.APPLICATION_CEA708.equals(mimeType) + || MimeTypes.APPLICATION_DVBSUBS.equals(mimeType) + || MimeTypes.APPLICATION_PGS.equals(mimeType); + } + + @Override + public SubtitleDecoder createDecoder(Format format) { + @Nullable String mimeType = format.sampleMimeType; + if (mimeType != null) { + switch (mimeType) { + case MimeTypes.TEXT_VTT: + return new WebvttDecoder(); + case MimeTypes.TEXT_SSA: + return new SsaDecoder(format.initializationData); + case MimeTypes.APPLICATION_MP4VTT: + return new Mp4WebvttDecoder(); + case MimeTypes.APPLICATION_TTML: + return new TtmlDecoder(); + case MimeTypes.APPLICATION_SUBRIP: + return new SubripDecoder(); + case MimeTypes.APPLICATION_TX3G: + return new Tx3gDecoder(format.initializationData); + case MimeTypes.APPLICATION_CEA608: + case MimeTypes.APPLICATION_MP4CEA608: + return new Cea608Decoder(mimeType, format.accessibilityChannel); + case MimeTypes.APPLICATION_CEA708: + return new Cea708Decoder(format.accessibilityChannel, format.initializationData); + case MimeTypes.APPLICATION_DVBSUBS: + return new DvbDecoder(format.initializationData); + case MimeTypes.APPLICATION_PGS: + return new PgsDecoder(); + default: + break; + } + } + throw new IllegalArgumentException( + "Attempted to create decoder for unsupported MIME type: " + mimeType); + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleInputBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleInputBuffer.java new file mode 100644 index 0000000000..dbcfe649b8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleInputBuffer.java @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; + +/** A {@link DecoderInputBuffer} for a {@link SubtitleDecoder}. */ +public class SubtitleInputBuffer extends DecoderInputBuffer { + + /** + * An offset that must be added to the subtitle's event times after it's been decoded, or + * {@link Format#OFFSET_SAMPLE_RELATIVE} if {@link #timeUs} should be added. + */ + public long subsampleOffsetUs; + + public SubtitleInputBuffer() { + super(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_NORMAL); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleOutputBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleOutputBuffer.java new file mode 100644 index 0000000000..9cc7671b24 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/SubtitleOutputBuffer.java @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.OutputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.List; + +/** + * Base class for {@link SubtitleDecoder} output buffers. + */ +public abstract class SubtitleOutputBuffer extends OutputBuffer implements Subtitle { + + @Nullable private Subtitle subtitle; + private long subsampleOffsetUs; + + /** + * Sets the content of the output buffer, consisting of a {@link Subtitle} and associated + * metadata. + * + * @param timeUs The time of the start of the subtitle in microseconds. + * @param subtitle The subtitle. + * @param subsampleOffsetUs An offset that must be added to the subtitle's event times, or + * {@link Format#OFFSET_SAMPLE_RELATIVE} if {@code timeUs} should be added. + */ + public void setContent(long timeUs, Subtitle subtitle, long subsampleOffsetUs) { + this.timeUs = timeUs; + this.subtitle = subtitle; + this.subsampleOffsetUs = subsampleOffsetUs == Format.OFFSET_SAMPLE_RELATIVE ? this.timeUs + : subsampleOffsetUs; + } + + @Override + public int getEventTimeCount() { + return Assertions.checkNotNull(subtitle).getEventTimeCount(); + } + + @Override + public long getEventTime(int index) { + return Assertions.checkNotNull(subtitle).getEventTime(index) + subsampleOffsetUs; + } + + @Override + public int getNextEventTimeIndex(long timeUs) { + return Assertions.checkNotNull(subtitle).getNextEventTimeIndex(timeUs - subsampleOffsetUs); + } + + @Override + public List getCues(long timeUs) { + return Assertions.checkNotNull(subtitle).getCues(timeUs - subsampleOffsetUs); + } + + @Override + public abstract void release(); + + @Override + public void clear() { + super.clear(); + subtitle = null; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/TextOutput.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/TextOutput.java new file mode 100644 index 0000000000..b15a2f1b35 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/TextOutput.java @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import java.util.List; + +/** + * Receives text output. + */ +public interface TextOutput { + + /** + * Called when there is a change in the {@link Cue}s. + * + * @param cues The {@link Cue}s. May be empty. + */ + void onCues(List cues); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/TextRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/TextRenderer.java new file mode 100644 index 0000000000..428b106fcd --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/TextRenderer.java @@ -0,0 +1,350 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import android.os.Handler; +import android.os.Handler.Callback; +import android.os.Looper; +import android.os.Message; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.BaseRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Collections; +import java.util.List; + +/** + * A renderer for text. + *

+ * {@link Subtitle}s are decoded from sample data using {@link SubtitleDecoder} instances obtained + * from a {@link SubtitleDecoderFactory}. The actual rendering of the subtitle {@link Cue}s is + * delegated to a {@link TextOutput}. + */ +public final class TextRenderer extends BaseRenderer implements Callback { + + private static final String TAG = "TextRenderer"; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + REPLACEMENT_STATE_NONE, + REPLACEMENT_STATE_SIGNAL_END_OF_STREAM, + REPLACEMENT_STATE_WAIT_END_OF_STREAM + }) + private @interface ReplacementState {} + /** + * The decoder does not need to be replaced. + */ + private static final int REPLACEMENT_STATE_NONE = 0; + /** + * The decoder needs to be replaced, but we haven't yet signaled an end of stream to the existing + * decoder. We need to do so in order to ensure that it outputs any remaining buffers before we + * release it. + */ + private static final int REPLACEMENT_STATE_SIGNAL_END_OF_STREAM = 1; + /** + * The decoder needs to be replaced, and we've signaled an end of stream to the existing decoder. + * We're waiting for the decoder to output an end of stream signal to indicate that it has output + * any remaining buffers before we release it. + */ + private static final int REPLACEMENT_STATE_WAIT_END_OF_STREAM = 2; + + private static final int MSG_UPDATE_OUTPUT = 0; + + @Nullable private final Handler outputHandler; + private final TextOutput output; + private final SubtitleDecoderFactory decoderFactory; + private final FormatHolder formatHolder; + + private boolean inputStreamEnded; + private boolean outputStreamEnded; + @ReplacementState private int decoderReplacementState; + @Nullable private Format streamFormat; + @Nullable private SubtitleDecoder decoder; + @Nullable private SubtitleInputBuffer nextInputBuffer; + @Nullable private SubtitleOutputBuffer subtitle; + @Nullable private SubtitleOutputBuffer nextSubtitle; + private int nextSubtitleEventIndex; + + /** + * @param output The output. + * @param outputLooper The looper associated with the thread on which the output should be called. + * If the output makes use of standard Android UI components, then this should normally be the + * looper associated with the application's main thread, which can be obtained using {@link + * android.app.Activity#getMainLooper()}. Null may be passed if the output should be called + * directly on the player's internal rendering thread. + */ + public TextRenderer(TextOutput output, @Nullable Looper outputLooper) { + this(output, outputLooper, SubtitleDecoderFactory.DEFAULT); + } + + /** + * @param output The output. + * @param outputLooper The looper associated with the thread on which the output should be called. + * If the output makes use of standard Android UI components, then this should normally be the + * looper associated with the application's main thread, which can be obtained using {@link + * android.app.Activity#getMainLooper()}. Null may be passed if the output should be called + * directly on the player's internal rendering thread. + * @param decoderFactory A factory from which to obtain {@link SubtitleDecoder} instances. + */ + public TextRenderer( + TextOutput output, @Nullable Looper outputLooper, SubtitleDecoderFactory decoderFactory) { + super(C.TRACK_TYPE_TEXT); + this.output = Assertions.checkNotNull(output); + this.outputHandler = + outputLooper == null ? null : Util.createHandler(outputLooper, /* callback= */ this); + this.decoderFactory = decoderFactory; + formatHolder = new FormatHolder(); + } + + @Override + @Capabilities + public int supportsFormat(Format format) { + if (decoderFactory.supportsFormat(format)) { + return RendererCapabilities.create( + supportsFormatDrm(null, format.drmInitData) ? FORMAT_HANDLED : FORMAT_UNSUPPORTED_DRM); + } else if (MimeTypes.isText(format.sampleMimeType)) { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_SUBTYPE); + } else { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_TYPE); + } + } + + @Override + protected void onStreamChanged(Format[] formats, long offsetUs) { + streamFormat = formats[0]; + if (decoder != null) { + decoderReplacementState = REPLACEMENT_STATE_SIGNAL_END_OF_STREAM; + } else { + decoder = decoderFactory.createDecoder(streamFormat); + } + } + + @Override + protected void onPositionReset(long positionUs, boolean joining) { + inputStreamEnded = false; + outputStreamEnded = false; + resetOutputAndDecoder(); + } + + @Override + public void render(long positionUs, long elapsedRealtimeUs) { + if (outputStreamEnded) { + return; + } + + if (nextSubtitle == null) { + decoder.setPositionUs(positionUs); + try { + nextSubtitle = decoder.dequeueOutputBuffer(); + } catch (SubtitleDecoderException e) { + handleDecoderError(e); + return; + } + } + + if (getState() != STATE_STARTED) { + return; + } + + boolean textRendererNeedsUpdate = false; + if (subtitle != null) { + // We're iterating through the events in a subtitle. Set textRendererNeedsUpdate if we + // advance to the next event. + long subtitleNextEventTimeUs = getNextEventTime(); + while (subtitleNextEventTimeUs <= positionUs) { + nextSubtitleEventIndex++; + subtitleNextEventTimeUs = getNextEventTime(); + textRendererNeedsUpdate = true; + } + } + + if (nextSubtitle != null) { + if (nextSubtitle.isEndOfStream()) { + if (!textRendererNeedsUpdate && getNextEventTime() == Long.MAX_VALUE) { + if (decoderReplacementState == REPLACEMENT_STATE_WAIT_END_OF_STREAM) { + replaceDecoder(); + } else { + releaseBuffers(); + outputStreamEnded = true; + } + } + } else if (nextSubtitle.timeUs <= positionUs) { + // Advance to the next subtitle. Sync the next event index and trigger an update. + if (subtitle != null) { + subtitle.release(); + } + subtitle = nextSubtitle; + nextSubtitle = null; + nextSubtitleEventIndex = subtitle.getNextEventTimeIndex(positionUs); + textRendererNeedsUpdate = true; + } + } + + if (textRendererNeedsUpdate) { + // textRendererNeedsUpdate is set and we're playing. Update the renderer. + updateOutput(subtitle.getCues(positionUs)); + } + + if (decoderReplacementState == REPLACEMENT_STATE_WAIT_END_OF_STREAM) { + return; + } + + try { + while (!inputStreamEnded) { + if (nextInputBuffer == null) { + nextInputBuffer = decoder.dequeueInputBuffer(); + if (nextInputBuffer == null) { + return; + } + } + if (decoderReplacementState == REPLACEMENT_STATE_SIGNAL_END_OF_STREAM) { + nextInputBuffer.setFlags(C.BUFFER_FLAG_END_OF_STREAM); + decoder.queueInputBuffer(nextInputBuffer); + nextInputBuffer = null; + decoderReplacementState = REPLACEMENT_STATE_WAIT_END_OF_STREAM; + return; + } + // Try and read the next subtitle from the source. + int result = readSource(formatHolder, nextInputBuffer, false); + if (result == C.RESULT_BUFFER_READ) { + if (nextInputBuffer.isEndOfStream()) { + inputStreamEnded = true; + } else { + nextInputBuffer.subsampleOffsetUs = formatHolder.format.subsampleOffsetUs; + nextInputBuffer.flip(); + } + decoder.queueInputBuffer(nextInputBuffer); + nextInputBuffer = null; + } else if (result == C.RESULT_NOTHING_READ) { + return; + } + } + } catch (SubtitleDecoderException e) { + handleDecoderError(e); + return; + } + } + + @Override + protected void onDisabled() { + streamFormat = null; + clearOutput(); + releaseDecoder(); + } + + @Override + public boolean isEnded() { + return outputStreamEnded; + } + + @Override + public boolean isReady() { + // Don't block playback whilst subtitles are loading. + // Note: To change this behavior, it will be necessary to consider [Internal: b/12949941]. + return true; + } + + private void releaseBuffers() { + nextInputBuffer = null; + nextSubtitleEventIndex = C.INDEX_UNSET; + if (subtitle != null) { + subtitle.release(); + subtitle = null; + } + if (nextSubtitle != null) { + nextSubtitle.release(); + nextSubtitle = null; + } + } + + private void releaseDecoder() { + releaseBuffers(); + decoder.release(); + decoder = null; + decoderReplacementState = REPLACEMENT_STATE_NONE; + } + + private void replaceDecoder() { + releaseDecoder(); + decoder = decoderFactory.createDecoder(streamFormat); + } + + private long getNextEventTime() { + return nextSubtitleEventIndex == C.INDEX_UNSET + || nextSubtitleEventIndex >= subtitle.getEventTimeCount() + ? Long.MAX_VALUE : subtitle.getEventTime(nextSubtitleEventIndex); + } + + private void updateOutput(List cues) { + if (outputHandler != null) { + outputHandler.obtainMessage(MSG_UPDATE_OUTPUT, cues).sendToTarget(); + } else { + invokeUpdateOutputInternal(cues); + } + } + + private void clearOutput() { + updateOutput(Collections.emptyList()); + } + + @SuppressWarnings("unchecked") + @Override + public boolean handleMessage(Message msg) { + switch (msg.what) { + case MSG_UPDATE_OUTPUT: + invokeUpdateOutputInternal((List) msg.obj); + return true; + default: + throw new IllegalStateException(); + } + } + + private void invokeUpdateOutputInternal(List cues) { + output.onCues(cues); + } + + /** + * Called when {@link #decoder} throws an exception, so it can be logged and playback can + * continue. + * + *

Logs {@code e} and resets state to allow decoding the next sample. + */ + private void handleDecoderError(SubtitleDecoderException e) { + Log.e(TAG, "Subtitle decoding failed. streamFormat=" + streamFormat, e); + resetOutputAndDecoder(); + } + + private void resetOutputAndDecoder() { + clearOutput(); + if (decoderReplacementState != REPLACEMENT_STATE_NONE) { + replaceDecoder(); + } else { + releaseBuffers(); + decoder.flush(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea608Decoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea608Decoder.java new file mode 100644 index 0000000000..320b4f3f07 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea608Decoder.java @@ -0,0 +1,1014 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea; + +import android.graphics.Color; +import android.graphics.Typeface; +import android.text.Layout.Alignment; +import android.text.SpannableString; +import android.text.SpannableStringBuilder; +import android.text.Spanned; +import android.text.style.ForegroundColorSpan; +import android.text.style.StyleSpan; +import android.text.style.UnderlineSpan; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** + * A {@link SubtitleDecoder} for CEA-608 (also known as "line 21 captions" and "EIA-608"). + */ +public final class Cea608Decoder extends CeaDecoder { + + private static final String TAG = "Cea608Decoder"; + + private static final int CC_VALID_FLAG = 0x04; + private static final int CC_TYPE_FLAG = 0x02; + private static final int CC_FIELD_FLAG = 0x01; + + private static final int NTSC_CC_FIELD_1 = 0x00; + private static final int NTSC_CC_FIELD_2 = 0x01; + private static final int NTSC_CC_CHANNEL_1 = 0x00; + private static final int NTSC_CC_CHANNEL_2 = 0x01; + + private static final int CC_MODE_UNKNOWN = 0; + private static final int CC_MODE_ROLL_UP = 1; + private static final int CC_MODE_POP_ON = 2; + private static final int CC_MODE_PAINT_ON = 3; + + private static final int[] ROW_INDICES = new int[] {11, 1, 3, 12, 14, 5, 7, 9}; + private static final int[] COLUMN_INDICES = new int[] {0, 4, 8, 12, 16, 20, 24, 28}; + + private static final int[] STYLE_COLORS = + new int[] { + Color.WHITE, Color.GREEN, Color.BLUE, Color.CYAN, Color.RED, Color.YELLOW, Color.MAGENTA + }; + private static final int STYLE_ITALICS = 0x07; + private static final int STYLE_UNCHANGED = 0x08; + + // The default number of rows to display in roll-up captions mode. + private static final int DEFAULT_CAPTIONS_ROW_COUNT = 4; + + // An implied first byte for packets that are only 2 bytes long, consisting of marker bits + // (0b11111) + valid bit (0b1) + NTSC field 1 type bits (0b00). + private static final byte CC_IMPLICIT_DATA_HEADER = (byte) 0xFC; + + /** + * Command initiating pop-on style captioning. Subsequent data should be loaded into a + * non-displayed memory and held there until the {@link #CTRL_END_OF_CAPTION} command is received, + * at which point the non-displayed memory becomes the displayed memory (and vice versa). + */ + private static final byte CTRL_RESUME_CAPTION_LOADING = 0x20; + + private static final byte CTRL_BACKSPACE = 0x21; + + private static final byte CTRL_DELETE_TO_END_OF_ROW = 0x24; + + /** + * Command initiating roll-up style captioning, with the maximum of 2 rows displayed + * simultaneously. + */ + private static final byte CTRL_ROLL_UP_CAPTIONS_2_ROWS = 0x25; + /** + * Command initiating roll-up style captioning, with the maximum of 3 rows displayed + * simultaneously. + */ + private static final byte CTRL_ROLL_UP_CAPTIONS_3_ROWS = 0x26; + /** + * Command initiating roll-up style captioning, with the maximum of 4 rows displayed + * simultaneously. + */ + private static final byte CTRL_ROLL_UP_CAPTIONS_4_ROWS = 0x27; + + /** + * Command initiating paint-on style captioning. Subsequent data should be addressed immediately + * to displayed memory without need for the {@link #CTRL_RESUME_CAPTION_LOADING} command. + */ + private static final byte CTRL_RESUME_DIRECT_CAPTIONING = 0x29; + /** + * TEXT commands are switching to TEXT service. All consecutive incoming data must be filtered out + * until a command is received that switches back to the CAPTION service. + */ + private static final byte CTRL_TEXT_RESTART = 0x2A; + + private static final byte CTRL_RESUME_TEXT_DISPLAY = 0x2B; + + private static final byte CTRL_ERASE_DISPLAYED_MEMORY = 0x2C; + private static final byte CTRL_CARRIAGE_RETURN = 0x2D; + private static final byte CTRL_ERASE_NON_DISPLAYED_MEMORY = 0x2E; + + /** + * Command indicating the end of a pop-on style caption. At this point the caption loaded in + * non-displayed memory should be swapped with the one in displayed memory. If no {@link + * #CTRL_RESUME_CAPTION_LOADING} command has been received, this command forces the receiver into + * pop-on style. + */ + private static final byte CTRL_END_OF_CAPTION = 0x2F; + + // Basic North American 608 CC char set, mostly ASCII. Indexed by (char-0x20). + private static final int[] BASIC_CHARACTER_SET = new int[] { + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, // ! " # $ % & ' + 0x28, 0x29, // ( ) + 0xE1, // 2A: 225 'á' "Latin small letter A with acute" + 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, // + , - . / + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, // 0 1 2 3 4 5 6 7 + 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, // 8 9 : ; < = > ? + 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, // @ A B C D E F G + 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, // H I J K L M N O + 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, // P Q R S T U V W + 0x58, 0x59, 0x5A, 0x5B, // X Y Z [ + 0xE9, // 5C: 233 'é' "Latin small letter E with acute" + 0x5D, // ] + 0xED, // 5E: 237 'í' "Latin small letter I with acute" + 0xF3, // 5F: 243 'ó' "Latin small letter O with acute" + 0xFA, // 60: 250 'ú' "Latin small letter U with acute" + 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, // a b c d e f g + 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, // h i j k l m n o + 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, // p q r s t u v w + 0x78, 0x79, 0x7A, // x y z + 0xE7, // 7B: 231 'ç' "Latin small letter C with cedilla" + 0xF7, // 7C: 247 '÷' "Division sign" + 0xD1, // 7D: 209 'Ñ' "Latin capital letter N with tilde" + 0xF1, // 7E: 241 'ñ' "Latin small letter N with tilde" + 0x25A0 // 7F: "Black Square" (NB: 2588 = Full Block) + }; + + // Special North American 608 CC char set. + private static final int[] SPECIAL_CHARACTER_SET = new int[] { + 0xAE, // 30: 174 '®' "Registered Sign" - registered trademark symbol + 0xB0, // 31: 176 '°' "Degree Sign" + 0xBD, // 32: 189 '½' "Vulgar Fraction One Half" (1/2 symbol) + 0xBF, // 33: 191 '¿' "Inverted Question Mark" + 0x2122, // 34: "Trade Mark Sign" (tm superscript) + 0xA2, // 35: 162 '¢' "Cent Sign" + 0xA3, // 36: 163 '£' "Pound Sign" - pounds sterling + 0x266A, // 37: "Eighth Note" - music note + 0xE0, // 38: 224 'à' "Latin small letter A with grave" + 0x20, // 39: TRANSPARENT SPACE - for now use ordinary space + 0xE8, // 3A: 232 'è' "Latin small letter E with grave" + 0xE2, // 3B: 226 'â' "Latin small letter A with circumflex" + 0xEA, // 3C: 234 'ê' "Latin small letter E with circumflex" + 0xEE, // 3D: 238 'î' "Latin small letter I with circumflex" + 0xF4, // 3E: 244 'ô' "Latin small letter O with circumflex" + 0xFB // 3F: 251 'û' "Latin small letter U with circumflex" + }; + + // Extended Spanish/Miscellaneous and French char set. + private static final int[] SPECIAL_ES_FR_CHARACTER_SET = new int[] { + // Spanish and misc. + 0xC1, 0xC9, 0xD3, 0xDA, 0xDC, 0xFC, 0x2018, 0xA1, + 0x2A, 0x27, 0x2014, 0xA9, 0x2120, 0x2022, 0x201C, 0x201D, + // French. + 0xC0, 0xC2, 0xC7, 0xC8, 0xCA, 0xCB, 0xEB, 0xCE, + 0xCF, 0xEF, 0xD4, 0xD9, 0xF9, 0xDB, 0xAB, 0xBB + }; + + //Extended Portuguese and German/Danish char set. + private static final int[] SPECIAL_PT_DE_CHARACTER_SET = new int[] { + // Portuguese. + 0xC3, 0xE3, 0xCD, 0xCC, 0xEC, 0xD2, 0xF2, 0xD5, + 0xF5, 0x7B, 0x7D, 0x5C, 0x5E, 0x5F, 0x7C, 0x7E, + // German/Danish. + 0xC4, 0xE4, 0xD6, 0xF6, 0xDF, 0xA5, 0xA4, 0x2502, + 0xC5, 0xE5, 0xD8, 0xF8, 0x250C, 0x2510, 0x2514, 0x2518 + }; + + private static final boolean[] ODD_PARITY_BYTE_TABLE = { + false, true, true, false, true, false, false, true, // 0 + true, false, false, true, false, true, true, false, // 8 + true, false, false, true, false, true, true, false, // 16 + false, true, true, false, true, false, false, true, // 24 + true, false, false, true, false, true, true, false, // 32 + false, true, true, false, true, false, false, true, // 40 + false, true, true, false, true, false, false, true, // 48 + true, false, false, true, false, true, true, false, // 56 + true, false, false, true, false, true, true, false, // 64 + false, true, true, false, true, false, false, true, // 72 + false, true, true, false, true, false, false, true, // 80 + true, false, false, true, false, true, true, false, // 88 + false, true, true, false, true, false, false, true, // 96 + true, false, false, true, false, true, true, false, // 104 + true, false, false, true, false, true, true, false, // 112 + false, true, true, false, true, false, false, true, // 120 + true, false, false, true, false, true, true, false, // 128 + false, true, true, false, true, false, false, true, // 136 + false, true, true, false, true, false, false, true, // 144 + true, false, false, true, false, true, true, false, // 152 + false, true, true, false, true, false, false, true, // 160 + true, false, false, true, false, true, true, false, // 168 + true, false, false, true, false, true, true, false, // 176 + false, true, true, false, true, false, false, true, // 184 + false, true, true, false, true, false, false, true, // 192 + true, false, false, true, false, true, true, false, // 200 + true, false, false, true, false, true, true, false, // 208 + false, true, true, false, true, false, false, true, // 216 + true, false, false, true, false, true, true, false, // 224 + false, true, true, false, true, false, false, true, // 232 + false, true, true, false, true, false, false, true, // 240 + true, false, false, true, false, true, true, false, // 248 + }; + + private final ParsableByteArray ccData; + private final int packetLength; + private final int selectedField; + private final int selectedChannel; + private final ArrayList cueBuilders; + + private CueBuilder currentCueBuilder; + private List cues; + private List lastCues; + + private int captionMode; + private int captionRowCount; + + private boolean isCaptionValid; + private boolean repeatableControlSet; + private byte repeatableControlCc1; + private byte repeatableControlCc2; + private int currentChannel; + + // The incoming characters may belong to 3 different services based on the last received control + // codes. The 3 services are Captioning, Text and XDS. The decoder only processes Captioning + // service bytes and drops the rest. + private boolean isInCaptionService; + + public Cea608Decoder(String mimeType, int accessibilityChannel) { + ccData = new ParsableByteArray(); + cueBuilders = new ArrayList<>(); + currentCueBuilder = new CueBuilder(CC_MODE_UNKNOWN, DEFAULT_CAPTIONS_ROW_COUNT); + currentChannel = NTSC_CC_CHANNEL_1; + packetLength = MimeTypes.APPLICATION_MP4CEA608.equals(mimeType) ? 2 : 3; + switch (accessibilityChannel) { + case 1: + selectedChannel = NTSC_CC_CHANNEL_1; + selectedField = NTSC_CC_FIELD_1; + break; + case 2: + selectedChannel = NTSC_CC_CHANNEL_2; + selectedField = NTSC_CC_FIELD_1; + break; + case 3: + selectedChannel = NTSC_CC_CHANNEL_1; + selectedField = NTSC_CC_FIELD_2; + break; + case 4: + selectedChannel = NTSC_CC_CHANNEL_2; + selectedField = NTSC_CC_FIELD_2; + break; + default: + Log.w(TAG, "Invalid channel. Defaulting to CC1."); + selectedChannel = NTSC_CC_CHANNEL_1; + selectedField = NTSC_CC_FIELD_1; + } + + setCaptionMode(CC_MODE_UNKNOWN); + resetCueBuilders(); + isInCaptionService = true; + } + + @Override + public String getName() { + return "Cea608Decoder"; + } + + @Override + public void flush() { + super.flush(); + cues = null; + lastCues = null; + setCaptionMode(CC_MODE_UNKNOWN); + setCaptionRowCount(DEFAULT_CAPTIONS_ROW_COUNT); + resetCueBuilders(); + isCaptionValid = false; + repeatableControlSet = false; + repeatableControlCc1 = 0; + repeatableControlCc2 = 0; + currentChannel = NTSC_CC_CHANNEL_1; + isInCaptionService = true; + } + + @Override + public void release() { + // Do nothing + } + + @Override + protected boolean isNewSubtitleDataAvailable() { + return cues != lastCues; + } + + @Override + protected Subtitle createSubtitle() { + lastCues = cues; + return new CeaSubtitle(cues); + } + + @SuppressWarnings("ByteBufferBackingArray") + @Override + protected void decode(SubtitleInputBuffer inputBuffer) { + ccData.reset(inputBuffer.data.array(), inputBuffer.data.limit()); + boolean captionDataProcessed = false; + while (ccData.bytesLeft() >= packetLength) { + byte ccHeader = packetLength == 2 ? CC_IMPLICIT_DATA_HEADER + : (byte) ccData.readUnsignedByte(); + int ccByte1 = ccData.readUnsignedByte(); + int ccByte2 = ccData.readUnsignedByte(); + + // TODO: We're currently ignoring the top 5 marker bits, which should all be 1s according + // to the CEA-608 specification. We need to determine if the data should be handled + // differently when that is not the case. + + if ((ccHeader & CC_TYPE_FLAG) != 0) { + // Do not process anything that is not part of the 608 byte stream. + continue; + } + + if ((ccHeader & CC_FIELD_FLAG) != selectedField) { + // Do not process packets not within the selected field. + continue; + } + + // Strip the parity bit from each byte to get CC data. + byte ccData1 = (byte) (ccByte1 & 0x7F); + byte ccData2 = (byte) (ccByte2 & 0x7F); + + if (ccData1 == 0 && ccData2 == 0) { + // Ignore empty captions. + continue; + } + + boolean previousIsCaptionValid = isCaptionValid; + isCaptionValid = + (ccHeader & CC_VALID_FLAG) == CC_VALID_FLAG + && ODD_PARITY_BYTE_TABLE[ccByte1] + && ODD_PARITY_BYTE_TABLE[ccByte2]; + + if (isRepeatedCommand(isCaptionValid, ccData1, ccData2)) { + // Ignore repeated valid commands. + continue; + } + + if (!isCaptionValid) { + if (previousIsCaptionValid) { + // The encoder has flipped the validity bit to indicate captions are being turned off. + resetCueBuilders(); + captionDataProcessed = true; + } + continue; + } + + maybeUpdateIsInCaptionService(ccData1, ccData2); + if (!isInCaptionService) { + // Only the Captioning service is supported. Drop all other bytes. + continue; + } + + if (!updateAndVerifyCurrentChannel(ccData1)) { + // Wrong channel. + continue; + } + + if (isCtrlCode(ccData1)) { + if (isSpecialNorthAmericanChar(ccData1, ccData2)) { + currentCueBuilder.append(getSpecialNorthAmericanChar(ccData2)); + } else if (isExtendedWestEuropeanChar(ccData1, ccData2)) { + // Remove standard equivalent of the special extended char before appending new one. + currentCueBuilder.backspace(); + currentCueBuilder.append(getExtendedWestEuropeanChar(ccData1, ccData2)); + } else if (isMidrowCtrlCode(ccData1, ccData2)) { + handleMidrowCtrl(ccData2); + } else if (isPreambleAddressCode(ccData1, ccData2)) { + handlePreambleAddressCode(ccData1, ccData2); + } else if (isTabCtrlCode(ccData1, ccData2)) { + currentCueBuilder.tabOffset = ccData2 - 0x20; + } else if (isMiscCode(ccData1, ccData2)) { + handleMiscCode(ccData2); + } + } else { + // Basic North American character set. + currentCueBuilder.append(getBasicChar(ccData1)); + if ((ccData2 & 0xE0) != 0x00) { + currentCueBuilder.append(getBasicChar(ccData2)); + } + } + captionDataProcessed = true; + } + + if (captionDataProcessed) { + if (captionMode == CC_MODE_ROLL_UP || captionMode == CC_MODE_PAINT_ON) { + cues = getDisplayCues(); + } + } + } + + private boolean updateAndVerifyCurrentChannel(byte cc1) { + if (isCtrlCode(cc1)) { + currentChannel = getChannel(cc1); + } + return currentChannel == selectedChannel; + } + + private boolean isRepeatedCommand(boolean captionValid, byte cc1, byte cc2) { + // Most control commands are sent twice in succession to ensure they are received properly. We + // don't want to process duplicate commands, so if we see the same repeatable command twice in a + // row then we ignore the second one. + if (captionValid && isRepeatable(cc1)) { + if (repeatableControlSet && repeatableControlCc1 == cc1 && repeatableControlCc2 == cc2) { + // This is a repeated command, so we ignore it. + repeatableControlSet = false; + return true; + } else { + // This is the first occurrence of a repeatable command. Set the repeatable control + // variables so that we can recognize and ignore a duplicate (if there is one), and then + // continue to process the command below. + repeatableControlSet = true; + repeatableControlCc1 = cc1; + repeatableControlCc2 = cc2; + } + } else { + // This command is not repeatable. + repeatableControlSet = false; + } + return false; + } + + private void handleMidrowCtrl(byte cc2) { + // TODO: support the extended styles (i.e. backgrounds and transparencies) + + // A midrow control code advances the cursor. + currentCueBuilder.append(' '); + + // cc2 - 0|0|1|0|STYLE|U + boolean underline = (cc2 & 0x01) == 0x01; + int style = (cc2 >> 1) & 0x07; + currentCueBuilder.setStyle(style, underline); + } + + private void handlePreambleAddressCode(byte cc1, byte cc2) { + // cc1 - 0|0|0|1|C|E|ROW + // C is the channel toggle, E is the extended flag, and ROW is the encoded row + int row = ROW_INDICES[cc1 & 0x07]; + // TODO: support the extended address and style + + // cc2 - 0|1|N|ATTRBTE|U + // N is the next row down toggle, ATTRBTE is the 4-byte encoded attribute, and U is the + // underline toggle. + boolean nextRowDown = (cc2 & 0x20) != 0; + if (nextRowDown) { + row++; + } + + if (row != currentCueBuilder.row) { + if (captionMode != CC_MODE_ROLL_UP && !currentCueBuilder.isEmpty()) { + currentCueBuilder = new CueBuilder(captionMode, captionRowCount); + cueBuilders.add(currentCueBuilder); + } + currentCueBuilder.row = row; + } + + // cc2 - 0|1|N|0|STYLE|U + // cc2 - 0|1|N|1|CURSR|U + boolean isCursor = (cc2 & 0x10) == 0x10; + boolean underline = (cc2 & 0x01) == 0x01; + int cursorOrStyle = (cc2 >> 1) & 0x07; + + // We need to call setStyle even for the isCursor case, to update the underline bit. + // STYLE_UNCHANGED is used for this case. + currentCueBuilder.setStyle(isCursor ? STYLE_UNCHANGED : cursorOrStyle, underline); + + if (isCursor) { + currentCueBuilder.indent = COLUMN_INDICES[cursorOrStyle]; + } + } + + private void handleMiscCode(byte cc2) { + switch (cc2) { + case CTRL_ROLL_UP_CAPTIONS_2_ROWS: + setCaptionMode(CC_MODE_ROLL_UP); + setCaptionRowCount(2); + return; + case CTRL_ROLL_UP_CAPTIONS_3_ROWS: + setCaptionMode(CC_MODE_ROLL_UP); + setCaptionRowCount(3); + return; + case CTRL_ROLL_UP_CAPTIONS_4_ROWS: + setCaptionMode(CC_MODE_ROLL_UP); + setCaptionRowCount(4); + return; + case CTRL_RESUME_CAPTION_LOADING: + setCaptionMode(CC_MODE_POP_ON); + return; + case CTRL_RESUME_DIRECT_CAPTIONING: + setCaptionMode(CC_MODE_PAINT_ON); + return; + default: + // Fall through. + break; + } + + if (captionMode == CC_MODE_UNKNOWN) { + return; + } + + switch (cc2) { + case CTRL_ERASE_DISPLAYED_MEMORY: + cues = Collections.emptyList(); + if (captionMode == CC_MODE_ROLL_UP || captionMode == CC_MODE_PAINT_ON) { + resetCueBuilders(); + } + break; + case CTRL_ERASE_NON_DISPLAYED_MEMORY: + resetCueBuilders(); + break; + case CTRL_END_OF_CAPTION: + cues = getDisplayCues(); + resetCueBuilders(); + break; + case CTRL_CARRIAGE_RETURN: + // carriage returns only apply to rollup captions; don't bother if we don't have anything + // to add a carriage return to + if (captionMode == CC_MODE_ROLL_UP && !currentCueBuilder.isEmpty()) { + currentCueBuilder.rollUp(); + } + break; + case CTRL_BACKSPACE: + currentCueBuilder.backspace(); + break; + case CTRL_DELETE_TO_END_OF_ROW: + // TODO: implement + break; + default: + // Fall through. + break; + } + } + + private List getDisplayCues() { + // CEA-608 does not define middle and end alignment, however content providers artificially + // introduce them using whitespace. When each cue is built, we try and infer the alignment based + // on the amount of whitespace either side of the text. To avoid consecutive cues being aligned + // differently, we force all cues to have the same alignment, with start alignment given + // preference, then middle alignment, then end alignment. + @Cue.AnchorType int positionAnchor = Cue.ANCHOR_TYPE_END; + int cueBuilderCount = cueBuilders.size(); + List cueBuilderCues = new ArrayList<>(cueBuilderCount); + for (int i = 0; i < cueBuilderCount; i++) { + Cue cue = cueBuilders.get(i).build(/* forcedPositionAnchor= */ Cue.TYPE_UNSET); + cueBuilderCues.add(cue); + if (cue != null) { + positionAnchor = Math.min(positionAnchor, cue.positionAnchor); + } + } + + // Skip null cues and rebuild any that don't have the preferred alignment. + List displayCues = new ArrayList<>(cueBuilderCount); + for (int i = 0; i < cueBuilderCount; i++) { + Cue cue = cueBuilderCues.get(i); + if (cue != null) { + if (cue.positionAnchor != positionAnchor) { + cue = cueBuilders.get(i).build(positionAnchor); + } + displayCues.add(cue); + } + } + + return displayCues; + } + + private void setCaptionMode(int captionMode) { + if (this.captionMode == captionMode) { + return; + } + + int oldCaptionMode = this.captionMode; + this.captionMode = captionMode; + + if (captionMode == CC_MODE_PAINT_ON) { + // Switching to paint-on mode should have no effect except to select the mode. + for (int i = 0; i < cueBuilders.size(); i++) { + cueBuilders.get(i).setCaptionMode(captionMode); + } + return; + } + + // Clear the working memory. + resetCueBuilders(); + if (oldCaptionMode == CC_MODE_PAINT_ON || captionMode == CC_MODE_ROLL_UP + || captionMode == CC_MODE_UNKNOWN) { + // When switching from paint-on or to roll-up or unknown, we also need to clear the caption. + cues = Collections.emptyList(); + } + } + + private void setCaptionRowCount(int captionRowCount) { + this.captionRowCount = captionRowCount; + currentCueBuilder.setCaptionRowCount(captionRowCount); + } + + private void resetCueBuilders() { + currentCueBuilder.reset(captionMode); + cueBuilders.clear(); + cueBuilders.add(currentCueBuilder); + } + + private void maybeUpdateIsInCaptionService(byte cc1, byte cc2) { + if (isXdsControlCode(cc1)) { + isInCaptionService = false; + } else if (isServiceSwitchCommand(cc1)) { + switch (cc2) { + case CTRL_TEXT_RESTART: + case CTRL_RESUME_TEXT_DISPLAY: + isInCaptionService = false; + break; + case CTRL_END_OF_CAPTION: + case CTRL_RESUME_CAPTION_LOADING: + case CTRL_RESUME_DIRECT_CAPTIONING: + case CTRL_ROLL_UP_CAPTIONS_2_ROWS: + case CTRL_ROLL_UP_CAPTIONS_3_ROWS: + case CTRL_ROLL_UP_CAPTIONS_4_ROWS: + isInCaptionService = true; + break; + default: + // No update. + } + } + } + + private static char getBasicChar(byte ccData) { + int index = (ccData & 0x7F) - 0x20; + return (char) BASIC_CHARACTER_SET[index]; + } + + private static boolean isSpecialNorthAmericanChar(byte cc1, byte cc2) { + // cc1 - 0|0|0|1|C|0|0|1 + // cc2 - 0|0|1|1|X|X|X|X + return ((cc1 & 0xF7) == 0x11) && ((cc2 & 0xF0) == 0x30); + } + + private static char getSpecialNorthAmericanChar(byte ccData) { + int index = ccData & 0x0F; + return (char) SPECIAL_CHARACTER_SET[index]; + } + + private static boolean isExtendedWestEuropeanChar(byte cc1, byte cc2) { + // cc1 - 0|0|0|1|C|0|1|S + // cc2 - 0|0|1|X|X|X|X|X + return ((cc1 & 0xF6) == 0x12) && ((cc2 & 0xE0) == 0x20); + } + + private static char getExtendedWestEuropeanChar(byte cc1, byte cc2) { + if ((cc1 & 0x01) == 0x00) { + // Extended Spanish/Miscellaneous and French character set (S = 0). + return getExtendedEsFrChar(cc2); + } else { + // Extended Portuguese and German/Danish character set (S = 1). + return getExtendedPtDeChar(cc2); + } + } + + private static char getExtendedEsFrChar(byte ccData) { + int index = ccData & 0x1F; + return (char) SPECIAL_ES_FR_CHARACTER_SET[index]; + } + + private static char getExtendedPtDeChar(byte ccData) { + int index = ccData & 0x1F; + return (char) SPECIAL_PT_DE_CHARACTER_SET[index]; + } + + private static boolean isCtrlCode(byte cc1) { + // cc1 - 0|0|0|X|X|X|X|X + return (cc1 & 0xE0) == 0x00; + } + + private static int getChannel(byte cc1) { + // cc1 - X|X|X|X|C|X|X|X + return (cc1 >> 3) & 0x1; + } + + private static boolean isMidrowCtrlCode(byte cc1, byte cc2) { + // cc1 - 0|0|0|1|C|0|0|1 + // cc2 - 0|0|1|0|X|X|X|X + return ((cc1 & 0xF7) == 0x11) && ((cc2 & 0xF0) == 0x20); + } + + private static boolean isPreambleAddressCode(byte cc1, byte cc2) { + // cc1 - 0|0|0|1|C|X|X|X + // cc2 - 0|1|X|X|X|X|X|X + return ((cc1 & 0xF0) == 0x10) && ((cc2 & 0xC0) == 0x40); + } + + private static boolean isTabCtrlCode(byte cc1, byte cc2) { + // cc1 - 0|0|0|1|C|1|1|1 + // cc2 - 0|0|1|0|0|0|0|1 to 0|0|1|0|0|0|1|1 + return ((cc1 & 0xF7) == 0x17) && (cc2 >= 0x21 && cc2 <= 0x23); + } + + private static boolean isMiscCode(byte cc1, byte cc2) { + // cc1 - 0|0|0|1|C|1|0|F + // cc2 - 0|0|1|0|X|X|X|X + return ((cc1 & 0xF6) == 0x14) && ((cc2 & 0xF0) == 0x20); + } + + private static boolean isRepeatable(byte cc1) { + // cc1 - 0|0|0|1|X|X|X|X + return (cc1 & 0xF0) == 0x10; + } + + private static boolean isXdsControlCode(byte cc1) { + return 0x01 <= cc1 && cc1 <= 0x0F; + } + + private static boolean isServiceSwitchCommand(byte cc1) { + // cc1 - 0|0|0|1|C|1|0|0 + return (cc1 & 0xF7) == 0x14; + } + + private static class CueBuilder { + + // 608 captions define a 15 row by 32 column screen grid. These constants convert from 608 + // positions to normalized screen position. + private static final int SCREEN_CHARWIDTH = 32; + private static final int BASE_ROW = 15; + + private final List cueStyles; + private final List rolledUpCaptions; + private final StringBuilder captionStringBuilder; + + private int row; + private int indent; + private int tabOffset; + private int captionMode; + private int captionRowCount; + + public CueBuilder(int captionMode, int captionRowCount) { + cueStyles = new ArrayList<>(); + rolledUpCaptions = new ArrayList<>(); + captionStringBuilder = new StringBuilder(); + reset(captionMode); + setCaptionRowCount(captionRowCount); + } + + public void reset(int captionMode) { + this.captionMode = captionMode; + cueStyles.clear(); + rolledUpCaptions.clear(); + captionStringBuilder.setLength(0); + row = BASE_ROW; + indent = 0; + tabOffset = 0; + } + + public boolean isEmpty() { + return cueStyles.isEmpty() + && rolledUpCaptions.isEmpty() + && captionStringBuilder.length() == 0; + } + + public void setCaptionMode(int captionMode) { + this.captionMode = captionMode; + } + + public void setCaptionRowCount(int captionRowCount) { + this.captionRowCount = captionRowCount; + } + + public void setStyle(int style, boolean underline) { + cueStyles.add(new CueStyle(style, underline, captionStringBuilder.length())); + } + + public void backspace() { + int length = captionStringBuilder.length(); + if (length > 0) { + captionStringBuilder.delete(length - 1, length); + // Decrement style start positions if necessary. + for (int i = cueStyles.size() - 1; i >= 0; i--) { + CueStyle style = cueStyles.get(i); + if (style.start == length) { + style.start--; + } else { + // All earlier cues must have style.start < length. + break; + } + } + } + } + + public void append(char text) { + captionStringBuilder.append(text); + } + + public void rollUp() { + rolledUpCaptions.add(buildCurrentLine()); + captionStringBuilder.setLength(0); + cueStyles.clear(); + int numRows = Math.min(captionRowCount, row); + while (rolledUpCaptions.size() >= numRows) { + rolledUpCaptions.remove(0); + } + } + + public Cue build(@Cue.AnchorType int forcedPositionAnchor) { + SpannableStringBuilder cueString = new SpannableStringBuilder(); + // Add any rolled up captions, separated by new lines. + for (int i = 0; i < rolledUpCaptions.size(); i++) { + cueString.append(rolledUpCaptions.get(i)); + cueString.append('\n'); + } + // Add the current line. + cueString.append(buildCurrentLine()); + + if (cueString.length() == 0) { + // The cue is empty. + return null; + } + + int positionAnchor; + // The number of empty columns before the start of the text, in the range [0-31]. + int startPadding = indent + tabOffset; + // The number of empty columns after the end of the text, in the same range. + int endPadding = SCREEN_CHARWIDTH - startPadding - cueString.length(); + int startEndPaddingDelta = startPadding - endPadding; + if (forcedPositionAnchor != Cue.TYPE_UNSET) { + positionAnchor = forcedPositionAnchor; + } else if (captionMode == CC_MODE_POP_ON + && (Math.abs(startEndPaddingDelta) < 3 || endPadding < 0)) { + // Treat approximately centered pop-on captions as middle aligned. We also treat captions + // that are wider than they should be in this way. See + // https://github.com/google/ExoPlayer/issues/3534. + positionAnchor = Cue.ANCHOR_TYPE_MIDDLE; + } else if (captionMode == CC_MODE_POP_ON && startEndPaddingDelta > 0) { + // Treat pop-on captions with less padding at the end than the start as end aligned. + positionAnchor = Cue.ANCHOR_TYPE_END; + } else { + // For all other cases assume start aligned. + positionAnchor = Cue.ANCHOR_TYPE_START; + } + + float position; + switch (positionAnchor) { + case Cue.ANCHOR_TYPE_MIDDLE: + position = 0.5f; + break; + case Cue.ANCHOR_TYPE_END: + position = (float) (SCREEN_CHARWIDTH - endPadding) / SCREEN_CHARWIDTH; + // Adjust the position to fit within the safe area. + position = position * 0.8f + 0.1f; + break; + case Cue.ANCHOR_TYPE_START: + default: + position = (float) startPadding / SCREEN_CHARWIDTH; + // Adjust the position to fit within the safe area. + position = position * 0.8f + 0.1f; + break; + } + + int lineAnchor; + int line; + // Note: Row indices are in the range [1-15]. + if (captionMode == CC_MODE_ROLL_UP || row > (BASE_ROW / 2)) { + lineAnchor = Cue.ANCHOR_TYPE_END; + line = row - BASE_ROW; + // Two line adjustments. The first is because line indices from the bottom of the window + // start from -1 rather than 0. The second is a blank row to act as the safe area. + line -= 2; + } else { + lineAnchor = Cue.ANCHOR_TYPE_START; + // Line indices from the top of the window start from 0, but we want a blank row to act as + // the safe area. As a result no adjustment is necessary. + line = row; + } + + return new Cue( + cueString, + Alignment.ALIGN_NORMAL, + line, + Cue.LINE_TYPE_NUMBER, + lineAnchor, + position, + positionAnchor, + Cue.DIMEN_UNSET); + } + + private SpannableString buildCurrentLine() { + SpannableStringBuilder builder = new SpannableStringBuilder(captionStringBuilder); + int length = builder.length(); + + int underlineStartPosition = C.INDEX_UNSET; + int italicStartPosition = C.INDEX_UNSET; + int colorStartPosition = 0; + int color = Color.WHITE; + + boolean nextItalic = false; + int nextColor = Color.WHITE; + + for (int i = 0; i < cueStyles.size(); i++) { + CueStyle cueStyle = cueStyles.get(i); + boolean underline = cueStyle.underline; + int style = cueStyle.style; + if (style != STYLE_UNCHANGED) { + // If the style is a color then italic is cleared. + nextItalic = style == STYLE_ITALICS; + // If the style is italic then the color is left unchanged. + nextColor = style == STYLE_ITALICS ? nextColor : STYLE_COLORS[style]; + } + + int position = cueStyle.start; + int nextPosition = (i + 1) < cueStyles.size() ? cueStyles.get(i + 1).start : length; + if (position == nextPosition) { + // There are more cueStyles to process at the current position. + continue; + } + + // Process changes to underline up to the current position. + if (underlineStartPosition != C.INDEX_UNSET && !underline) { + setUnderlineSpan(builder, underlineStartPosition, position); + underlineStartPosition = C.INDEX_UNSET; + } else if (underlineStartPosition == C.INDEX_UNSET && underline) { + underlineStartPosition = position; + } + // Process changes to italic up to the current position. + if (italicStartPosition != C.INDEX_UNSET && !nextItalic) { + setItalicSpan(builder, italicStartPosition, position); + italicStartPosition = C.INDEX_UNSET; + } else if (italicStartPosition == C.INDEX_UNSET && nextItalic) { + italicStartPosition = position; + } + // Process changes to color up to the current position. + if (nextColor != color) { + setColorSpan(builder, colorStartPosition, position, color); + color = nextColor; + colorStartPosition = position; + } + } + + // Add any final spans. + if (underlineStartPosition != C.INDEX_UNSET && underlineStartPosition != length) { + setUnderlineSpan(builder, underlineStartPosition, length); + } + if (italicStartPosition != C.INDEX_UNSET && italicStartPosition != length) { + setItalicSpan(builder, italicStartPosition, length); + } + if (colorStartPosition != length) { + setColorSpan(builder, colorStartPosition, length, color); + } + + return new SpannableString(builder); + } + + private static void setUnderlineSpan(SpannableStringBuilder builder, int start, int end) { + builder.setSpan(new UnderlineSpan(), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + + private static void setItalicSpan(SpannableStringBuilder builder, int start, int end) { + builder.setSpan(new StyleSpan(Typeface.ITALIC), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + + private static void setColorSpan( + SpannableStringBuilder builder, int start, int end, int color) { + if (color == Color.WHITE) { + // White is treated as the default color (i.e. no span is attached). + return; + } + builder.setSpan(new ForegroundColorSpan(color), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + + private static class CueStyle { + + public final int style; + public final boolean underline; + + public int start; + + public CueStyle(int style, boolean underline, int start) { + this.style = style; + this.underline = underline; + this.start = start; + } + + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea708Cue.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea708Cue.java new file mode 100644 index 0000000000..268b6baec0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea708Cue.java @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea; + +import android.text.Layout.Alignment; +import androidx.annotation.NonNull; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; + +/** + * A {@link Cue} for CEA-708. + */ +/* package */ final class Cea708Cue extends Cue implements Comparable { + + /** + * The priority of the cue box. + */ + public final int priority; + + /** + * @param text See {@link #text}. + * @param textAlignment See {@link #textAlignment}. + * @param line See {@link #line}. + * @param lineType See {@link #lineType}. + * @param lineAnchor See {@link #lineAnchor}. + * @param position See {@link #position}. + * @param positionAnchor See {@link #positionAnchor}. + * @param size See {@link #size}. + * @param windowColorSet See {@link #windowColorSet}. + * @param windowColor See {@link #windowColor}. + * @param priority See (@link #priority}. + */ + public Cea708Cue(CharSequence text, Alignment textAlignment, float line, @LineType int lineType, + @AnchorType int lineAnchor, float position, @AnchorType int positionAnchor, float size, + boolean windowColorSet, int windowColor, int priority) { + super(text, textAlignment, line, lineType, lineAnchor, position, positionAnchor, size, + windowColorSet, windowColor); + this.priority = priority; + } + + @Override + public int compareTo(@NonNull Cea708Cue other) { + if (other.priority < priority) { + return -1; + } else if (other.priority > priority) { + return 1; + } + return 0; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea708Decoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea708Decoder.java new file mode 100644 index 0000000000..c8af0ed350 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea708Decoder.java @@ -0,0 +1,1255 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea; + +import android.graphics.Color; +import android.graphics.Typeface; +import android.text.Layout.Alignment; +import android.text.SpannableString; +import android.text.SpannableStringBuilder; +import android.text.Spanned; +import android.text.style.BackgroundColorSpan; +import android.text.style.ForegroundColorSpan; +import android.text.style.StyleSpan; +import android.text.style.UnderlineSpan; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue.AnchorType; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** + * A {@link SubtitleDecoder} for CEA-708 (also known as "EIA-708"). + */ +public final class Cea708Decoder extends CeaDecoder { + + private static final String TAG = "Cea708Decoder"; + + private static final int NUM_WINDOWS = 8; + + private static final int DTVCC_PACKET_DATA = 0x02; + private static final int DTVCC_PACKET_START = 0x03; + private static final int CC_VALID_FLAG = 0x04; + + // Base Commands + private static final int GROUP_C0_END = 0x1F; // Miscellaneous Control Codes + private static final int GROUP_G0_END = 0x7F; // ASCII Printable Characters + private static final int GROUP_C1_END = 0x9F; // Captioning Command Control Codes + private static final int GROUP_G1_END = 0xFF; // ISO 8859-1 LATIN-1 Character Set + + // Extended Commands + private static final int GROUP_C2_END = 0x1F; // Extended Control Code Set 1 + private static final int GROUP_G2_END = 0x7F; // Extended Miscellaneous Characters + private static final int GROUP_C3_END = 0x9F; // Extended Control Code Set 2 + private static final int GROUP_G3_END = 0xFF; // Future Expansion + + // Group C0 Commands + private static final int COMMAND_NUL = 0x00; // Nul + private static final int COMMAND_ETX = 0x03; // EndOfText + private static final int COMMAND_BS = 0x08; // Backspace + private static final int COMMAND_FF = 0x0C; // FormFeed (Flush) + private static final int COMMAND_CR = 0x0D; // CarriageReturn + private static final int COMMAND_HCR = 0x0E; // ClearLine + private static final int COMMAND_EXT1 = 0x10; // Extended Control Code Flag + private static final int COMMAND_EXT1_START = 0x11; + private static final int COMMAND_EXT1_END = 0x17; + private static final int COMMAND_P16_START = 0x18; + private static final int COMMAND_P16_END = 0x1F; + + // Group C1 Commands + private static final int COMMAND_CW0 = 0x80; // SetCurrentWindow to 0 + private static final int COMMAND_CW1 = 0x81; // SetCurrentWindow to 1 + private static final int COMMAND_CW2 = 0x82; // SetCurrentWindow to 2 + private static final int COMMAND_CW3 = 0x83; // SetCurrentWindow to 3 + private static final int COMMAND_CW4 = 0x84; // SetCurrentWindow to 4 + private static final int COMMAND_CW5 = 0x85; // SetCurrentWindow to 5 + private static final int COMMAND_CW6 = 0x86; // SetCurrentWindow to 6 + private static final int COMMAND_CW7 = 0x87; // SetCurrentWindow to 7 + private static final int COMMAND_CLW = 0x88; // ClearWindows (+1 byte) + private static final int COMMAND_DSW = 0x89; // DisplayWindows (+1 byte) + private static final int COMMAND_HDW = 0x8A; // HideWindows (+1 byte) + private static final int COMMAND_TGW = 0x8B; // ToggleWindows (+1 byte) + private static final int COMMAND_DLW = 0x8C; // DeleteWindows (+1 byte) + private static final int COMMAND_DLY = 0x8D; // Delay (+1 byte) + private static final int COMMAND_DLC = 0x8E; // DelayCancel + private static final int COMMAND_RST = 0x8F; // Reset + private static final int COMMAND_SPA = 0x90; // SetPenAttributes (+2 bytes) + private static final int COMMAND_SPC = 0x91; // SetPenColor (+3 bytes) + private static final int COMMAND_SPL = 0x92; // SetPenLocation (+2 bytes) + private static final int COMMAND_SWA = 0x97; // SetWindowAttributes (+4 bytes) + private static final int COMMAND_DF0 = 0x98; // DefineWindow 0 (+6 bytes) + private static final int COMMAND_DF1 = 0x99; // DefineWindow 1 (+6 bytes) + private static final int COMMAND_DF2 = 0x9A; // DefineWindow 2 (+6 bytes) + private static final int COMMAND_DF3 = 0x9B; // DefineWindow 3 (+6 bytes) + private static final int COMMAND_DF4 = 0x9C; // DefineWindow 4 (+6 bytes) + private static final int COMMAND_DF5 = 0x9D; // DefineWindow 5 (+6 bytes) + private static final int COMMAND_DF6 = 0x9E; // DefineWindow 6 (+6 bytes) + private static final int COMMAND_DF7 = 0x9F; // DefineWindow 7 (+6 bytes) + + // G0 Table Special Chars + private static final int CHARACTER_MN = 0x7F; // MusicNote + + // G2 Table Special Chars + private static final int CHARACTER_TSP = 0x20; + private static final int CHARACTER_NBTSP = 0x21; + private static final int CHARACTER_ELLIPSIS = 0x25; + private static final int CHARACTER_BIG_CARONS = 0x2A; + private static final int CHARACTER_BIG_OE = 0x2C; + private static final int CHARACTER_SOLID_BLOCK = 0x30; + private static final int CHARACTER_OPEN_SINGLE_QUOTE = 0x31; + private static final int CHARACTER_CLOSE_SINGLE_QUOTE = 0x32; + private static final int CHARACTER_OPEN_DOUBLE_QUOTE = 0x33; + private static final int CHARACTER_CLOSE_DOUBLE_QUOTE = 0x34; + private static final int CHARACTER_BOLD_BULLET = 0x35; + private static final int CHARACTER_TM = 0x39; + private static final int CHARACTER_SMALL_CARONS = 0x3A; + private static final int CHARACTER_SMALL_OE = 0x3C; + private static final int CHARACTER_SM = 0x3D; + private static final int CHARACTER_DIAERESIS_Y = 0x3F; + private static final int CHARACTER_ONE_EIGHTH = 0x76; + private static final int CHARACTER_THREE_EIGHTHS = 0x77; + private static final int CHARACTER_FIVE_EIGHTHS = 0x78; + private static final int CHARACTER_SEVEN_EIGHTHS = 0x79; + private static final int CHARACTER_VERTICAL_BORDER = 0x7A; + private static final int CHARACTER_UPPER_RIGHT_BORDER = 0x7B; + private static final int CHARACTER_LOWER_LEFT_BORDER = 0x7C; + private static final int CHARACTER_HORIZONTAL_BORDER = 0x7D; + private static final int CHARACTER_LOWER_RIGHT_BORDER = 0x7E; + private static final int CHARACTER_UPPER_LEFT_BORDER = 0x7F; + + private final ParsableByteArray ccData; + private final ParsableBitArray serviceBlockPacket; + + private final int selectedServiceNumber; + private final CueBuilder[] cueBuilders; + + private CueBuilder currentCueBuilder; + private List cues; + private List lastCues; + + private DtvCcPacket currentDtvCcPacket; + private int currentWindow; + + // TODO: Retrieve isWideAspectRatio from initializationData and use it. + public Cea708Decoder(int accessibilityChannel, @Nullable List initializationData) { + ccData = new ParsableByteArray(); + serviceBlockPacket = new ParsableBitArray(); + selectedServiceNumber = accessibilityChannel == Format.NO_VALUE ? 1 : accessibilityChannel; + + cueBuilders = new CueBuilder[NUM_WINDOWS]; + for (int i = 0; i < NUM_WINDOWS; i++) { + cueBuilders[i] = new CueBuilder(); + } + + currentCueBuilder = cueBuilders[0]; + resetCueBuilders(); + } + + @Override + public String getName() { + return "Cea708Decoder"; + } + + @Override + public void flush() { + super.flush(); + cues = null; + lastCues = null; + currentWindow = 0; + currentCueBuilder = cueBuilders[currentWindow]; + resetCueBuilders(); + currentDtvCcPacket = null; + } + + @Override + protected boolean isNewSubtitleDataAvailable() { + return cues != lastCues; + } + + @Override + protected Subtitle createSubtitle() { + lastCues = cues; + return new CeaSubtitle(cues); + } + + @Override + protected void decode(SubtitleInputBuffer inputBuffer) { + // Subtitle input buffers are non-direct and the position is zero, so calling array() is safe. + @SuppressWarnings("ByteBufferBackingArray") + byte[] inputBufferData = inputBuffer.data.array(); + ccData.reset(inputBufferData, inputBuffer.data.limit()); + while (ccData.bytesLeft() >= 3) { + int ccTypeAndValid = (ccData.readUnsignedByte() & 0x07); + + int ccType = ccTypeAndValid & (DTVCC_PACKET_DATA | DTVCC_PACKET_START); + boolean ccValid = (ccTypeAndValid & CC_VALID_FLAG) == CC_VALID_FLAG; + byte ccData1 = (byte) ccData.readUnsignedByte(); + byte ccData2 = (byte) ccData.readUnsignedByte(); + + // Ignore any non-CEA-708 data + if (ccType != DTVCC_PACKET_DATA && ccType != DTVCC_PACKET_START) { + continue; + } + + if (!ccValid) { + // This byte-pair isn't valid, ignore it and continue. + continue; + } + + if (ccType == DTVCC_PACKET_START) { + finalizeCurrentPacket(); + + int sequenceNumber = (ccData1 & 0xC0) >> 6; // first 2 bits + int packetSize = ccData1 & 0x3F; // last 6 bits + if (packetSize == 0) { + packetSize = 64; + } + + currentDtvCcPacket = new DtvCcPacket(sequenceNumber, packetSize); + currentDtvCcPacket.packetData[currentDtvCcPacket.currentIndex++] = ccData2; + } else { + // The only remaining valid packet type is DTVCC_PACKET_DATA + Assertions.checkArgument(ccType == DTVCC_PACKET_DATA); + + if (currentDtvCcPacket == null) { + Log.e(TAG, "Encountered DTVCC_PACKET_DATA before DTVCC_PACKET_START"); + continue; + } + + currentDtvCcPacket.packetData[currentDtvCcPacket.currentIndex++] = ccData1; + currentDtvCcPacket.packetData[currentDtvCcPacket.currentIndex++] = ccData2; + } + + if (currentDtvCcPacket.currentIndex == (currentDtvCcPacket.packetSize * 2 - 1)) { + finalizeCurrentPacket(); + } + } + } + + private void finalizeCurrentPacket() { + if (currentDtvCcPacket == null) { + // No packet to finalize; + return; + } + + processCurrentPacket(); + currentDtvCcPacket = null; + } + + private void processCurrentPacket() { + if (currentDtvCcPacket.currentIndex != (currentDtvCcPacket.packetSize * 2 - 1)) { + Log.w(TAG, "DtvCcPacket ended prematurely; size is " + (currentDtvCcPacket.packetSize * 2 - 1) + + ", but current index is " + currentDtvCcPacket.currentIndex + " (sequence number " + + currentDtvCcPacket.sequenceNumber + "); ignoring packet"); + return; + } + + serviceBlockPacket.reset(currentDtvCcPacket.packetData, currentDtvCcPacket.currentIndex); + + int serviceNumber = serviceBlockPacket.readBits(3); + int blockSize = serviceBlockPacket.readBits(5); + if (serviceNumber == 7) { + // extended service numbers + serviceBlockPacket.skipBits(2); + serviceNumber = serviceBlockPacket.readBits(6); + if (serviceNumber < 7) { + Log.w(TAG, "Invalid extended service number: " + serviceNumber); + } + } + + // Ignore packets in which blockSize is 0 + if (blockSize == 0) { + if (serviceNumber != 0) { + Log.w(TAG, "serviceNumber is non-zero (" + serviceNumber + ") when blockSize is 0"); + } + return; + } + + if (serviceNumber != selectedServiceNumber) { + return; + } + + // The cues should be updated if we receive a C0 ETX command, any C1 command, or if after + // processing the service block any text has been added to the buffer. See CEA-708-B Section + // 8.10.4 for more details. + boolean cuesNeedUpdate = false; + + while (serviceBlockPacket.bitsLeft() > 0) { + int command = serviceBlockPacket.readBits(8); + if (command != COMMAND_EXT1) { + if (command <= GROUP_C0_END) { + handleC0Command(command); + // If the C0 command was an ETX command, the cues are updated in handleC0Command. + } else if (command <= GROUP_G0_END) { + handleG0Character(command); + cuesNeedUpdate = true; + } else if (command <= GROUP_C1_END) { + handleC1Command(command); + cuesNeedUpdate = true; + } else if (command <= GROUP_G1_END) { + handleG1Character(command); + cuesNeedUpdate = true; + } else { + Log.w(TAG, "Invalid base command: " + command); + } + } else { + // Read the extended command + command = serviceBlockPacket.readBits(8); + if (command <= GROUP_C2_END) { + handleC2Command(command); + } else if (command <= GROUP_G2_END) { + handleG2Character(command); + cuesNeedUpdate = true; + } else if (command <= GROUP_C3_END) { + handleC3Command(command); + } else if (command <= GROUP_G3_END) { + handleG3Character(command); + cuesNeedUpdate = true; + } else { + Log.w(TAG, "Invalid extended command: " + command); + } + } + } + + if (cuesNeedUpdate) { + cues = getDisplayCues(); + } + } + + private void handleC0Command(int command) { + switch (command) { + case COMMAND_NUL: + // Do nothing. + break; + case COMMAND_ETX: + cues = getDisplayCues(); + break; + case COMMAND_BS: + currentCueBuilder.backspace(); + break; + case COMMAND_FF: + resetCueBuilders(); + break; + case COMMAND_CR: + currentCueBuilder.append('\n'); + break; + case COMMAND_HCR: + // TODO: Add support for this command. + break; + default: + if (command >= COMMAND_EXT1_START && command <= COMMAND_EXT1_END) { + Log.w(TAG, "Currently unsupported COMMAND_EXT1 Command: " + command); + serviceBlockPacket.skipBits(8); + } else if (command >= COMMAND_P16_START && command <= COMMAND_P16_END) { + Log.w(TAG, "Currently unsupported COMMAND_P16 Command: " + command); + serviceBlockPacket.skipBits(16); + } else { + Log.w(TAG, "Invalid C0 command: " + command); + } + } + } + + private void handleC1Command(int command) { + int window; + switch (command) { + case COMMAND_CW0: + case COMMAND_CW1: + case COMMAND_CW2: + case COMMAND_CW3: + case COMMAND_CW4: + case COMMAND_CW5: + case COMMAND_CW6: + case COMMAND_CW7: + window = (command - COMMAND_CW0); + if (currentWindow != window) { + currentWindow = window; + currentCueBuilder = cueBuilders[window]; + } + break; + case COMMAND_CLW: + for (int i = 1; i <= NUM_WINDOWS; i++) { + if (serviceBlockPacket.readBit()) { + cueBuilders[NUM_WINDOWS - i].clear(); + } + } + break; + case COMMAND_DSW: + for (int i = 1; i <= NUM_WINDOWS; i++) { + if (serviceBlockPacket.readBit()) { + cueBuilders[NUM_WINDOWS - i].setVisibility(true); + } + } + break; + case COMMAND_HDW: + for (int i = 1; i <= NUM_WINDOWS; i++) { + if (serviceBlockPacket.readBit()) { + cueBuilders[NUM_WINDOWS - i].setVisibility(false); + } + } + break; + case COMMAND_TGW: + for (int i = 1; i <= NUM_WINDOWS; i++) { + if (serviceBlockPacket.readBit()) { + CueBuilder cueBuilder = cueBuilders[NUM_WINDOWS - i]; + cueBuilder.setVisibility(!cueBuilder.isVisible()); + } + } + break; + case COMMAND_DLW: + for (int i = 1; i <= NUM_WINDOWS; i++) { + if (serviceBlockPacket.readBit()) { + cueBuilders[NUM_WINDOWS - i].reset(); + } + } + break; + case COMMAND_DLY: + // TODO: Add support for delay commands. + serviceBlockPacket.skipBits(8); + break; + case COMMAND_DLC: + // TODO: Add support for delay commands. + break; + case COMMAND_RST: + resetCueBuilders(); + break; + case COMMAND_SPA: + if (!currentCueBuilder.isDefined()) { + // ignore this command if the current window/cue isn't defined + serviceBlockPacket.skipBits(16); + } else { + handleSetPenAttributes(); + } + break; + case COMMAND_SPC: + if (!currentCueBuilder.isDefined()) { + // ignore this command if the current window/cue isn't defined + serviceBlockPacket.skipBits(24); + } else { + handleSetPenColor(); + } + break; + case COMMAND_SPL: + if (!currentCueBuilder.isDefined()) { + // ignore this command if the current window/cue isn't defined + serviceBlockPacket.skipBits(16); + } else { + handleSetPenLocation(); + } + break; + case COMMAND_SWA: + if (!currentCueBuilder.isDefined()) { + // ignore this command if the current window/cue isn't defined + serviceBlockPacket.skipBits(32); + } else { + handleSetWindowAttributes(); + } + break; + case COMMAND_DF0: + case COMMAND_DF1: + case COMMAND_DF2: + case COMMAND_DF3: + case COMMAND_DF4: + case COMMAND_DF5: + case COMMAND_DF6: + case COMMAND_DF7: + window = (command - COMMAND_DF0); + handleDefineWindow(window); + // We also set the current window to the newly defined window. + if (currentWindow != window) { + currentWindow = window; + currentCueBuilder = cueBuilders[window]; + } + break; + default: + Log.w(TAG, "Invalid C1 command: " + command); + } + } + + private void handleC2Command(int command) { + // C2 Table doesn't contain any commands in CEA-708-B, but we do need to skip bytes + if (command <= 0x07) { + // Do nothing. + } else if (command <= 0x0F) { + serviceBlockPacket.skipBits(8); + } else if (command <= 0x17) { + serviceBlockPacket.skipBits(16); + } else if (command <= 0x1F) { + serviceBlockPacket.skipBits(24); + } + } + + private void handleC3Command(int command) { + // C3 Table doesn't contain any commands in CEA-708-B, but we do need to skip bytes + if (command <= 0x87) { + serviceBlockPacket.skipBits(32); + } else if (command <= 0x8F) { + serviceBlockPacket.skipBits(40); + } else if (command <= 0x9F) { + // 90-9F are variable length codes; the first byte defines the header with the first + // 2 bits specifying the type and the last 6 bits specifying the remaining length of the + // command in bytes + serviceBlockPacket.skipBits(2); + int length = serviceBlockPacket.readBits(6); + serviceBlockPacket.skipBits(8 * length); + } + } + + private void handleG0Character(int characterCode) { + if (characterCode == CHARACTER_MN) { + currentCueBuilder.append('\u266B'); + } else { + currentCueBuilder.append((char) (characterCode & 0xFF)); + } + } + + private void handleG1Character(int characterCode) { + currentCueBuilder.append((char) (characterCode & 0xFF)); + } + + private void handleG2Character(int characterCode) { + switch (characterCode) { + case CHARACTER_TSP: + currentCueBuilder.append('\u0020'); + break; + case CHARACTER_NBTSP: + currentCueBuilder.append('\u00A0'); + break; + case CHARACTER_ELLIPSIS: + currentCueBuilder.append('\u2026'); + break; + case CHARACTER_BIG_CARONS: + currentCueBuilder.append('\u0160'); + break; + case CHARACTER_BIG_OE: + currentCueBuilder.append('\u0152'); + break; + case CHARACTER_SOLID_BLOCK: + currentCueBuilder.append('\u2588'); + break; + case CHARACTER_OPEN_SINGLE_QUOTE: + currentCueBuilder.append('\u2018'); + break; + case CHARACTER_CLOSE_SINGLE_QUOTE: + currentCueBuilder.append('\u2019'); + break; + case CHARACTER_OPEN_DOUBLE_QUOTE: + currentCueBuilder.append('\u201C'); + break; + case CHARACTER_CLOSE_DOUBLE_QUOTE: + currentCueBuilder.append('\u201D'); + break; + case CHARACTER_BOLD_BULLET: + currentCueBuilder.append('\u2022'); + break; + case CHARACTER_TM: + currentCueBuilder.append('\u2122'); + break; + case CHARACTER_SMALL_CARONS: + currentCueBuilder.append('\u0161'); + break; + case CHARACTER_SMALL_OE: + currentCueBuilder.append('\u0153'); + break; + case CHARACTER_SM: + currentCueBuilder.append('\u2120'); + break; + case CHARACTER_DIAERESIS_Y: + currentCueBuilder.append('\u0178'); + break; + case CHARACTER_ONE_EIGHTH: + currentCueBuilder.append('\u215B'); + break; + case CHARACTER_THREE_EIGHTHS: + currentCueBuilder.append('\u215C'); + break; + case CHARACTER_FIVE_EIGHTHS: + currentCueBuilder.append('\u215D'); + break; + case CHARACTER_SEVEN_EIGHTHS: + currentCueBuilder.append('\u215E'); + break; + case CHARACTER_VERTICAL_BORDER: + currentCueBuilder.append('\u2502'); + break; + case CHARACTER_UPPER_RIGHT_BORDER: + currentCueBuilder.append('\u2510'); + break; + case CHARACTER_LOWER_LEFT_BORDER: + currentCueBuilder.append('\u2514'); + break; + case CHARACTER_HORIZONTAL_BORDER: + currentCueBuilder.append('\u2500'); + break; + case CHARACTER_LOWER_RIGHT_BORDER: + currentCueBuilder.append('\u2518'); + break; + case CHARACTER_UPPER_LEFT_BORDER: + currentCueBuilder.append('\u250C'); + break; + default: + Log.w(TAG, "Invalid G2 character: " + characterCode); + // The CEA-708 specification doesn't specify what to do in the case of an unexpected + // value in the G2 character range, so we ignore it. + } + } + + private void handleG3Character(int characterCode) { + if (characterCode == 0xA0) { + currentCueBuilder.append('\u33C4'); + } else { + Log.w(TAG, "Invalid G3 character: " + characterCode); + // Substitute any unsupported G3 character with an underscore as per CEA-708 specification. + currentCueBuilder.append('_'); + } + } + + private void handleSetPenAttributes() { + // the SetPenAttributes command contains 2 bytes of data + // first byte + int textTag = serviceBlockPacket.readBits(4); + int offset = serviceBlockPacket.readBits(2); + int penSize = serviceBlockPacket.readBits(2); + // second byte + boolean italicsToggle = serviceBlockPacket.readBit(); + boolean underlineToggle = serviceBlockPacket.readBit(); + int edgeType = serviceBlockPacket.readBits(3); + int fontStyle = serviceBlockPacket.readBits(3); + + currentCueBuilder.setPenAttributes(textTag, offset, penSize, italicsToggle, underlineToggle, + edgeType, fontStyle); + } + + private void handleSetPenColor() { + // the SetPenColor command contains 3 bytes of data + // first byte + int foregroundO = serviceBlockPacket.readBits(2); + int foregroundR = serviceBlockPacket.readBits(2); + int foregroundG = serviceBlockPacket.readBits(2); + int foregroundB = serviceBlockPacket.readBits(2); + int foregroundColor = CueBuilder.getArgbColorFromCeaColor(foregroundR, foregroundG, foregroundB, + foregroundO); + // second byte + int backgroundO = serviceBlockPacket.readBits(2); + int backgroundR = serviceBlockPacket.readBits(2); + int backgroundG = serviceBlockPacket.readBits(2); + int backgroundB = serviceBlockPacket.readBits(2); + int backgroundColor = CueBuilder.getArgbColorFromCeaColor(backgroundR, backgroundG, backgroundB, + backgroundO); + // third byte + serviceBlockPacket.skipBits(2); // null padding + int edgeR = serviceBlockPacket.readBits(2); + int edgeG = serviceBlockPacket.readBits(2); + int edgeB = serviceBlockPacket.readBits(2); + int edgeColor = CueBuilder.getArgbColorFromCeaColor(edgeR, edgeG, edgeB); + + currentCueBuilder.setPenColor(foregroundColor, backgroundColor, edgeColor); + } + + private void handleSetPenLocation() { + // the SetPenLocation command contains 2 bytes of data + // first byte + serviceBlockPacket.skipBits(4); + int row = serviceBlockPacket.readBits(4); + // second byte + serviceBlockPacket.skipBits(2); + int column = serviceBlockPacket.readBits(6); + + currentCueBuilder.setPenLocation(row, column); + } + + private void handleSetWindowAttributes() { + // the SetWindowAttributes command contains 4 bytes of data + // first byte + int fillO = serviceBlockPacket.readBits(2); + int fillR = serviceBlockPacket.readBits(2); + int fillG = serviceBlockPacket.readBits(2); + int fillB = serviceBlockPacket.readBits(2); + int fillColor = CueBuilder.getArgbColorFromCeaColor(fillR, fillG, fillB, fillO); + // second byte + int borderType = serviceBlockPacket.readBits(2); // only the lower 2 bits of borderType + int borderR = serviceBlockPacket.readBits(2); + int borderG = serviceBlockPacket.readBits(2); + int borderB = serviceBlockPacket.readBits(2); + int borderColor = CueBuilder.getArgbColorFromCeaColor(borderR, borderG, borderB); + // third byte + if (serviceBlockPacket.readBit()) { + borderType |= 0x04; // set the top bit of the 3-bit borderType + } + boolean wordWrapToggle = serviceBlockPacket.readBit(); + int printDirection = serviceBlockPacket.readBits(2); + int scrollDirection = serviceBlockPacket.readBits(2); + int justification = serviceBlockPacket.readBits(2); + // fourth byte + // Note that we don't intend to support display effects + serviceBlockPacket.skipBits(8); // effectSpeed(4), effectDirection(2), displayEffect(2) + + currentCueBuilder.setWindowAttributes(fillColor, borderColor, wordWrapToggle, borderType, + printDirection, scrollDirection, justification); + } + + private void handleDefineWindow(int window) { + CueBuilder cueBuilder = cueBuilders[window]; + + // the DefineWindow command contains 6 bytes of data + // first byte + serviceBlockPacket.skipBits(2); // null padding + boolean visible = serviceBlockPacket.readBit(); + boolean rowLock = serviceBlockPacket.readBit(); + boolean columnLock = serviceBlockPacket.readBit(); + int priority = serviceBlockPacket.readBits(3); + // second byte + boolean relativePositioning = serviceBlockPacket.readBit(); + int verticalAnchor = serviceBlockPacket.readBits(7); + // third byte + int horizontalAnchor = serviceBlockPacket.readBits(8); + // fourth byte + int anchorId = serviceBlockPacket.readBits(4); + int rowCount = serviceBlockPacket.readBits(4); + // fifth byte + serviceBlockPacket.skipBits(2); // null padding + int columnCount = serviceBlockPacket.readBits(6); + // sixth byte + serviceBlockPacket.skipBits(2); // null padding + int windowStyle = serviceBlockPacket.readBits(3); + int penStyle = serviceBlockPacket.readBits(3); + + cueBuilder.defineWindow(visible, rowLock, columnLock, priority, relativePositioning, + verticalAnchor, horizontalAnchor, rowCount, columnCount, anchorId, windowStyle, penStyle); + } + + private List getDisplayCues() { + List displayCues = new ArrayList<>(); + for (int i = 0; i < NUM_WINDOWS; i++) { + if (!cueBuilders[i].isEmpty() && cueBuilders[i].isVisible()) { + displayCues.add(cueBuilders[i].build()); + } + } + Collections.sort(displayCues); + return Collections.unmodifiableList(displayCues); + } + + private void resetCueBuilders() { + for (int i = 0; i < NUM_WINDOWS; i++) { + cueBuilders[i].reset(); + } + } + + private static final class DtvCcPacket { + + public final int sequenceNumber; + public final int packetSize; + public final byte[] packetData; + + int currentIndex; + + public DtvCcPacket(int sequenceNumber, int packetSize) { + this.sequenceNumber = sequenceNumber; + this.packetSize = packetSize; + packetData = new byte[2 * packetSize - 1]; + currentIndex = 0; + } + + } + + // TODO: There is a lot of overlap between Cea708Decoder.CueBuilder and Cea608Decoder.CueBuilder + // which could be refactored into a separate class. + private static final class CueBuilder { + + private static final int RELATIVE_CUE_SIZE = 99; + private static final int VERTICAL_SIZE = 74; + private static final int HORIZONTAL_SIZE = 209; + + private static final int DEFAULT_PRIORITY = 4; + + private static final int MAXIMUM_ROW_COUNT = 15; + + private static final int JUSTIFICATION_LEFT = 0; + private static final int JUSTIFICATION_RIGHT = 1; + private static final int JUSTIFICATION_CENTER = 2; + private static final int JUSTIFICATION_FULL = 3; + + private static final int DIRECTION_LEFT_TO_RIGHT = 0; + private static final int DIRECTION_RIGHT_TO_LEFT = 1; + private static final int DIRECTION_TOP_TO_BOTTOM = 2; + private static final int DIRECTION_BOTTOM_TO_TOP = 3; + + // TODO: Add other border/edge types when utilized. + private static final int BORDER_AND_EDGE_TYPE_NONE = 0; + private static final int BORDER_AND_EDGE_TYPE_UNIFORM = 3; + + public static final int COLOR_SOLID_WHITE = getArgbColorFromCeaColor(2, 2, 2, 0); + public static final int COLOR_SOLID_BLACK = getArgbColorFromCeaColor(0, 0, 0, 0); + public static final int COLOR_TRANSPARENT = getArgbColorFromCeaColor(0, 0, 0, 3); + + // TODO: Add other sizes when utilized. + private static final int PEN_SIZE_STANDARD = 1; + + // TODO: Add other pen font styles when utilized. + private static final int PEN_FONT_STYLE_DEFAULT = 0; + private static final int PEN_FONT_STYLE_MONOSPACED_WITH_SERIFS = 1; + private static final int PEN_FONT_STYLE_PROPORTIONALLY_SPACED_WITH_SERIFS = 2; + private static final int PEN_FONT_STYLE_MONOSPACED_WITHOUT_SERIFS = 3; + private static final int PEN_FONT_STYLE_PROPORTIONALLY_SPACED_WITHOUT_SERIFS = 4; + + // TODO: Add other pen offsets when utilized. + private static final int PEN_OFFSET_NORMAL = 1; + + // The window style properties are specified in the CEA-708 specification. + private static final int[] WINDOW_STYLE_JUSTIFICATION = new int[] { + JUSTIFICATION_LEFT, JUSTIFICATION_LEFT, JUSTIFICATION_LEFT, + JUSTIFICATION_LEFT, JUSTIFICATION_LEFT, JUSTIFICATION_CENTER, + JUSTIFICATION_LEFT + }; + private static final int[] WINDOW_STYLE_PRINT_DIRECTION = new int[] { + DIRECTION_LEFT_TO_RIGHT, DIRECTION_LEFT_TO_RIGHT, DIRECTION_LEFT_TO_RIGHT, + DIRECTION_LEFT_TO_RIGHT, DIRECTION_LEFT_TO_RIGHT, DIRECTION_LEFT_TO_RIGHT, + DIRECTION_TOP_TO_BOTTOM + }; + private static final int[] WINDOW_STYLE_SCROLL_DIRECTION = new int[] { + DIRECTION_BOTTOM_TO_TOP, DIRECTION_BOTTOM_TO_TOP, DIRECTION_BOTTOM_TO_TOP, + DIRECTION_BOTTOM_TO_TOP, DIRECTION_BOTTOM_TO_TOP, DIRECTION_BOTTOM_TO_TOP, + DIRECTION_RIGHT_TO_LEFT + }; + private static final boolean[] WINDOW_STYLE_WORD_WRAP = new boolean[] { + false, false, false, true, true, true, false + }; + private static final int[] WINDOW_STYLE_FILL = new int[] { + COLOR_SOLID_BLACK, COLOR_TRANSPARENT, COLOR_SOLID_BLACK, COLOR_SOLID_BLACK, + COLOR_TRANSPARENT, COLOR_SOLID_BLACK, COLOR_SOLID_BLACK + }; + + // The pen style properties are specified in the CEA-708 specification. + private static final int[] PEN_STYLE_FONT_STYLE = new int[] { + PEN_FONT_STYLE_DEFAULT, PEN_FONT_STYLE_MONOSPACED_WITH_SERIFS, + PEN_FONT_STYLE_PROPORTIONALLY_SPACED_WITH_SERIFS, PEN_FONT_STYLE_MONOSPACED_WITHOUT_SERIFS, + PEN_FONT_STYLE_PROPORTIONALLY_SPACED_WITHOUT_SERIFS, + PEN_FONT_STYLE_MONOSPACED_WITHOUT_SERIFS, + PEN_FONT_STYLE_PROPORTIONALLY_SPACED_WITHOUT_SERIFS + }; + private static final int[] PEN_STYLE_EDGE_TYPE = new int[] { + BORDER_AND_EDGE_TYPE_NONE, BORDER_AND_EDGE_TYPE_NONE, BORDER_AND_EDGE_TYPE_NONE, + BORDER_AND_EDGE_TYPE_NONE, BORDER_AND_EDGE_TYPE_NONE, BORDER_AND_EDGE_TYPE_UNIFORM, + BORDER_AND_EDGE_TYPE_UNIFORM + }; + private static final int[] PEN_STYLE_BACKGROUND = new int[] { + COLOR_SOLID_BLACK, COLOR_SOLID_BLACK, COLOR_SOLID_BLACK, COLOR_SOLID_BLACK, + COLOR_SOLID_BLACK, COLOR_TRANSPARENT, COLOR_TRANSPARENT}; + + private final List rolledUpCaptions; + private final SpannableStringBuilder captionStringBuilder; + + // Window/Cue properties + private boolean defined; + private boolean visible; + private int priority; + private boolean relativePositioning; + private int verticalAnchor; + private int horizontalAnchor; + private int anchorId; + private int rowCount; + private boolean rowLock; + private int justification; + private int windowStyleId; + private int penStyleId; + private int windowFillColor; + + // Pen/Text properties + private int italicsStartPosition; + private int underlineStartPosition; + private int foregroundColorStartPosition; + private int foregroundColor; + private int backgroundColorStartPosition; + private int backgroundColor; + private int row; + + public CueBuilder() { + rolledUpCaptions = new ArrayList<>(); + captionStringBuilder = new SpannableStringBuilder(); + reset(); + } + + public boolean isEmpty() { + return !isDefined() || (rolledUpCaptions.isEmpty() && captionStringBuilder.length() == 0); + } + + public void reset() { + clear(); + + defined = false; + visible = false; + priority = DEFAULT_PRIORITY; + relativePositioning = false; + verticalAnchor = 0; + horizontalAnchor = 0; + anchorId = 0; + rowCount = MAXIMUM_ROW_COUNT; + rowLock = true; + justification = JUSTIFICATION_LEFT; + windowStyleId = 0; + penStyleId = 0; + windowFillColor = COLOR_SOLID_BLACK; + + foregroundColor = COLOR_SOLID_WHITE; + backgroundColor = COLOR_SOLID_BLACK; + } + + public void clear() { + rolledUpCaptions.clear(); + captionStringBuilder.clear(); + italicsStartPosition = C.POSITION_UNSET; + underlineStartPosition = C.POSITION_UNSET; + foregroundColorStartPosition = C.POSITION_UNSET; + backgroundColorStartPosition = C.POSITION_UNSET; + row = 0; + } + + public boolean isDefined() { + return defined; + } + + public void setVisibility(boolean visible) { + this.visible = visible; + } + + public boolean isVisible() { + return visible; + } + + public void defineWindow(boolean visible, boolean rowLock, boolean columnLock, int priority, + boolean relativePositioning, int verticalAnchor, int horizontalAnchor, int rowCount, + int columnCount, int anchorId, int windowStyleId, int penStyleId) { + this.defined = true; + this.visible = visible; + this.rowLock = rowLock; + this.priority = priority; + this.relativePositioning = relativePositioning; + this.verticalAnchor = verticalAnchor; + this.horizontalAnchor = horizontalAnchor; + this.anchorId = anchorId; + + // Decoders must add one to rowCount to get the desired number of rows. + if (this.rowCount != rowCount + 1) { + this.rowCount = rowCount + 1; + + // Trim any rolled up captions that are no longer valid, if applicable. + while ((rowLock && (rolledUpCaptions.size() >= this.rowCount)) + || (rolledUpCaptions.size() >= MAXIMUM_ROW_COUNT)) { + rolledUpCaptions.remove(0); + } + } + + // TODO: Add support for column lock and count. + + if (windowStyleId != 0 && this.windowStyleId != windowStyleId) { + this.windowStyleId = windowStyleId; + // windowStyleId is 1-based. + int windowStyleIdIndex = windowStyleId - 1; + // Note that Border type and border color are the same for all window styles. + setWindowAttributes(WINDOW_STYLE_FILL[windowStyleIdIndex], COLOR_TRANSPARENT, + WINDOW_STYLE_WORD_WRAP[windowStyleIdIndex], BORDER_AND_EDGE_TYPE_NONE, + WINDOW_STYLE_PRINT_DIRECTION[windowStyleIdIndex], + WINDOW_STYLE_SCROLL_DIRECTION[windowStyleIdIndex], + WINDOW_STYLE_JUSTIFICATION[windowStyleIdIndex]); + } + + if (penStyleId != 0 && this.penStyleId != penStyleId) { + this.penStyleId = penStyleId; + // penStyleId is 1-based. + int penStyleIdIndex = penStyleId - 1; + // Note that pen size, offset, italics, underline, foreground color, and foreground + // opacity are the same for all pen styles. + setPenAttributes(0, PEN_OFFSET_NORMAL, PEN_SIZE_STANDARD, false, false, + PEN_STYLE_EDGE_TYPE[penStyleIdIndex], PEN_STYLE_FONT_STYLE[penStyleIdIndex]); + setPenColor(COLOR_SOLID_WHITE, PEN_STYLE_BACKGROUND[penStyleIdIndex], COLOR_SOLID_BLACK); + } + } + + + public void setWindowAttributes(int fillColor, int borderColor, boolean wordWrapToggle, + int borderType, int printDirection, int scrollDirection, int justification) { + this.windowFillColor = fillColor; + // TODO: Add support for border color and types. + // TODO: Add support for word wrap. + // TODO: Add support for other scroll directions. + // TODO: Add support for other print directions. + this.justification = justification; + + } + + public void setPenAttributes(int textTag, int offset, int penSize, boolean italicsToggle, + boolean underlineToggle, int edgeType, int fontStyle) { + // TODO: Add support for text tags. + // TODO: Add support for other offsets. + // TODO: Add support for other pen sizes. + + if (italicsStartPosition != C.POSITION_UNSET) { + if (!italicsToggle) { + captionStringBuilder.setSpan(new StyleSpan(Typeface.ITALIC), italicsStartPosition, + captionStringBuilder.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + italicsStartPosition = C.POSITION_UNSET; + } + } else if (italicsToggle) { + italicsStartPosition = captionStringBuilder.length(); + } + + if (underlineStartPosition != C.POSITION_UNSET) { + if (!underlineToggle) { + captionStringBuilder.setSpan(new UnderlineSpan(), underlineStartPosition, + captionStringBuilder.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + underlineStartPosition = C.POSITION_UNSET; + } + } else if (underlineToggle) { + underlineStartPosition = captionStringBuilder.length(); + } + + // TODO: Add support for edge types. + // TODO: Add support for other font styles. + } + + public void setPenColor(int foregroundColor, int backgroundColor, int edgeColor) { + if (foregroundColorStartPosition != C.POSITION_UNSET) { + if (this.foregroundColor != foregroundColor) { + captionStringBuilder.setSpan(new ForegroundColorSpan(this.foregroundColor), + foregroundColorStartPosition, captionStringBuilder.length(), + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + } + if (foregroundColor != COLOR_SOLID_WHITE) { + foregroundColorStartPosition = captionStringBuilder.length(); + this.foregroundColor = foregroundColor; + } + + if (backgroundColorStartPosition != C.POSITION_UNSET) { + if (this.backgroundColor != backgroundColor) { + captionStringBuilder.setSpan(new BackgroundColorSpan(this.backgroundColor), + backgroundColorStartPosition, captionStringBuilder.length(), + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + } + if (backgroundColor != COLOR_SOLID_BLACK) { + backgroundColorStartPosition = captionStringBuilder.length(); + this.backgroundColor = backgroundColor; + } + + // TODO: Add support for edge color. + } + + public void setPenLocation(int row, int column) { + // TODO: Support moving the pen location with a window properly. + + // Until we support proper pen locations, if we encounter a row that's different from the + // previous one, we should append a new line. Otherwise, we'll see strings that should be + // on new lines concatenated with the previous, resulting in 2 words being combined, as + // well as potentially drawing beyond the width of the window/screen. + if (this.row != row) { + append('\n'); + } + this.row = row; + } + + public void backspace() { + int length = captionStringBuilder.length(); + if (length > 0) { + captionStringBuilder.delete(length - 1, length); + } + } + + public void append(char text) { + if (text == '\n') { + rolledUpCaptions.add(buildSpannableString()); + captionStringBuilder.clear(); + + if (italicsStartPosition != C.POSITION_UNSET) { + italicsStartPosition = 0; + } + if (underlineStartPosition != C.POSITION_UNSET) { + underlineStartPosition = 0; + } + if (foregroundColorStartPosition != C.POSITION_UNSET) { + foregroundColorStartPosition = 0; + } + if (backgroundColorStartPosition != C.POSITION_UNSET) { + backgroundColorStartPosition = 0; + } + + while ((rowLock && (rolledUpCaptions.size() >= rowCount)) + || (rolledUpCaptions.size() >= MAXIMUM_ROW_COUNT)) { + rolledUpCaptions.remove(0); + } + } else { + captionStringBuilder.append(text); + } + } + + public SpannableString buildSpannableString() { + SpannableStringBuilder spannableStringBuilder = + new SpannableStringBuilder(captionStringBuilder); + int length = spannableStringBuilder.length(); + + if (length > 0) { + if (italicsStartPosition != C.POSITION_UNSET) { + spannableStringBuilder.setSpan(new StyleSpan(Typeface.ITALIC), italicsStartPosition, + length, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + + if (underlineStartPosition != C.POSITION_UNSET) { + spannableStringBuilder.setSpan(new UnderlineSpan(), underlineStartPosition, + length, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + + if (foregroundColorStartPosition != C.POSITION_UNSET) { + spannableStringBuilder.setSpan(new ForegroundColorSpan(foregroundColor), + foregroundColorStartPosition, length, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + + if (backgroundColorStartPosition != C.POSITION_UNSET) { + spannableStringBuilder.setSpan(new BackgroundColorSpan(backgroundColor), + backgroundColorStartPosition, length, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + } + + return new SpannableString(spannableStringBuilder); + } + + public Cea708Cue build() { + if (isEmpty()) { + // The cue is empty. + return null; + } + + SpannableStringBuilder cueString = new SpannableStringBuilder(); + + // Add any rolled up captions, separated by new lines. + for (int i = 0; i < rolledUpCaptions.size(); i++) { + cueString.append(rolledUpCaptions.get(i)); + cueString.append('\n'); + } + // Add the current line. + cueString.append(buildSpannableString()); + + // TODO: Add support for right-to-left languages (i.e. where right would correspond to normal + // alignment). + Alignment alignment; + switch (justification) { + case JUSTIFICATION_FULL: + // TODO: Add support for full justification. + case JUSTIFICATION_LEFT: + alignment = Alignment.ALIGN_NORMAL; + break; + case JUSTIFICATION_RIGHT: + alignment = Alignment.ALIGN_OPPOSITE; + break; + case JUSTIFICATION_CENTER: + alignment = Alignment.ALIGN_CENTER; + break; + default: + throw new IllegalArgumentException("Unexpected justification value: " + justification); + } + + float position; + float line; + if (relativePositioning) { + position = (float) horizontalAnchor / RELATIVE_CUE_SIZE; + line = (float) verticalAnchor / RELATIVE_CUE_SIZE; + } else { + position = (float) horizontalAnchor / HORIZONTAL_SIZE; + line = (float) verticalAnchor / VERTICAL_SIZE; + } + // Apply screen-edge padding to the line and position. + position = (position * 0.9f) + 0.05f; + line = (line * 0.9f) + 0.05f; + + // anchorId specifies where the anchor should be placed on the caption cue/window. The 9 + // possible configurations are as follows: + // 0-----1-----2 + // | | + // 3 4 5 + // | | + // 6-----7-----8 + @AnchorType int verticalAnchorType; + if (anchorId % 3 == 0) { + verticalAnchorType = Cue.ANCHOR_TYPE_START; + } else if (anchorId % 3 == 1) { + verticalAnchorType = Cue.ANCHOR_TYPE_MIDDLE; + } else { + verticalAnchorType = Cue.ANCHOR_TYPE_END; + } + // TODO: Add support for right-to-left languages (i.e. where start is on the right). + @AnchorType int horizontalAnchorType; + if (anchorId / 3 == 0) { + horizontalAnchorType = Cue.ANCHOR_TYPE_START; + } else if (anchorId / 3 == 1) { + horizontalAnchorType = Cue.ANCHOR_TYPE_MIDDLE; + } else { + horizontalAnchorType = Cue.ANCHOR_TYPE_END; + } + + boolean windowColorSet = (windowFillColor != COLOR_SOLID_BLACK); + + return new Cea708Cue(cueString, alignment, line, Cue.LINE_TYPE_FRACTION, verticalAnchorType, + position, horizontalAnchorType, Cue.DIMEN_UNSET, windowColorSet, windowFillColor, + priority); + } + + public static int getArgbColorFromCeaColor(int red, int green, int blue) { + return getArgbColorFromCeaColor(red, green, blue, 0); + } + + public static int getArgbColorFromCeaColor(int red, int green, int blue, int opacity) { + Assertions.checkIndex(red, 0, 4); + Assertions.checkIndex(green, 0, 4); + Assertions.checkIndex(blue, 0, 4); + Assertions.checkIndex(opacity, 0, 4); + + int alpha; + switch (opacity) { + case 0: + case 1: + // Note the value of '1' is actually FLASH, but we don't support that. + alpha = 255; + break; + case 2: + alpha = 127; + break; + case 3: + alpha = 0; + break; + default: + alpha = 255; + } + + // TODO: Add support for the Alternative Minimum Color List or the full 64 RGB combinations. + + // Return values based on the Minimum Color List + return Color.argb(alpha, + (red > 1 ? 255 : 0), + (green > 1 ? 255 : 0), + (blue > 1 ? 255 : 0)); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea708InitializationData.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea708InitializationData.java new file mode 100644 index 0000000000..5d63ca8e82 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/Cea708InitializationData.java @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea; + +import java.util.Collections; +import java.util.List; + +/** Initialization data for CEA-708 decoders. */ +public final class Cea708InitializationData { + + /** + * Whether the closed caption service is formatted for displays with 16:9 aspect ratio. If false, + * the closed caption service is formatted for 4:3 displays. + */ + public final boolean isWideAspectRatio; + + private Cea708InitializationData(List initializationData) { + isWideAspectRatio = initializationData.get(0)[0] != 0; + } + + /** + * Returns an object representation of CEA-708 initialization data + * + * @param initializationData Binary CEA-708 initialization data. + * @return The object representation. + */ + public static Cea708InitializationData fromData(List initializationData) { + return new Cea708InitializationData(initializationData); + } + + /** + * Builds binary CEA-708 initialization data. + * + * @param isWideAspectRatio Whether the closed caption service is formatted for displays with 16:9 + * aspect ratio. + * @return Binary CEA-708 initializaton data. + */ + public static List buildData(boolean isWideAspectRatio) { + return Collections.singletonList(new byte[] {(byte) (isWideAspectRatio ? 1 : 0)}); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/CeaDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/CeaDecoder.java new file mode 100644 index 0000000000..42fa915fc5 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/CeaDecoder.java @@ -0,0 +1,204 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea; + +import androidx.annotation.NonNull; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleDecoderException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleOutputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.ArrayDeque; +import java.util.PriorityQueue; + +/** + * Base class for subtitle parsers for CEA captions. + */ +/* package */ abstract class CeaDecoder implements SubtitleDecoder { + + private static final int NUM_INPUT_BUFFERS = 10; + private static final int NUM_OUTPUT_BUFFERS = 2; + + private final ArrayDeque availableInputBuffers; + private final ArrayDeque availableOutputBuffers; + private final PriorityQueue queuedInputBuffers; + + private CeaInputBuffer dequeuedInputBuffer; + private long playbackPositionUs; + private long queuedInputBufferCount; + + public CeaDecoder() { + availableInputBuffers = new ArrayDeque<>(); + for (int i = 0; i < NUM_INPUT_BUFFERS; i++) { + availableInputBuffers.add(new CeaInputBuffer()); + } + availableOutputBuffers = new ArrayDeque<>(); + for (int i = 0; i < NUM_OUTPUT_BUFFERS; i++) { + availableOutputBuffers.add(new CeaOutputBuffer()); + } + queuedInputBuffers = new PriorityQueue<>(); + } + + @Override + public abstract String getName(); + + @Override + public void setPositionUs(long positionUs) { + playbackPositionUs = positionUs; + } + + @Override + public SubtitleInputBuffer dequeueInputBuffer() throws SubtitleDecoderException { + Assertions.checkState(dequeuedInputBuffer == null); + if (availableInputBuffers.isEmpty()) { + return null; + } + dequeuedInputBuffer = availableInputBuffers.pollFirst(); + return dequeuedInputBuffer; + } + + @Override + public void queueInputBuffer(SubtitleInputBuffer inputBuffer) throws SubtitleDecoderException { + Assertions.checkArgument(inputBuffer == dequeuedInputBuffer); + if (inputBuffer.isDecodeOnly()) { + // We can drop this buffer early (i.e. before it would be decoded) as the CEA formats allow + // for decoding to begin mid-stream. + releaseInputBuffer(dequeuedInputBuffer); + } else { + dequeuedInputBuffer.queuedInputBufferCount = queuedInputBufferCount++; + queuedInputBuffers.add(dequeuedInputBuffer); + } + dequeuedInputBuffer = null; + } + + @Override + public SubtitleOutputBuffer dequeueOutputBuffer() throws SubtitleDecoderException { + if (availableOutputBuffers.isEmpty()) { + return null; + } + // iterate through all available input buffers whose timestamps are less than or equal + // to the current playback position; processing input buffers for future content should + // be deferred until they would be applicable + while (!queuedInputBuffers.isEmpty() + && queuedInputBuffers.peek().timeUs <= playbackPositionUs) { + CeaInputBuffer inputBuffer = queuedInputBuffers.poll(); + + // If the input buffer indicates we've reached the end of the stream, we can + // return immediately with an output buffer propagating that + if (inputBuffer.isEndOfStream()) { + SubtitleOutputBuffer outputBuffer = availableOutputBuffers.pollFirst(); + outputBuffer.addFlag(C.BUFFER_FLAG_END_OF_STREAM); + releaseInputBuffer(inputBuffer); + return outputBuffer; + } + + decode(inputBuffer); + + // check if we have any caption updates to report + if (isNewSubtitleDataAvailable()) { + // Even if the subtitle is decode-only; we need to generate it to consume the data so it + // isn't accidentally prepended to the next subtitle + Subtitle subtitle = createSubtitle(); + if (!inputBuffer.isDecodeOnly()) { + SubtitleOutputBuffer outputBuffer = availableOutputBuffers.pollFirst(); + outputBuffer.setContent(inputBuffer.timeUs, subtitle, Format.OFFSET_SAMPLE_RELATIVE); + releaseInputBuffer(inputBuffer); + return outputBuffer; + } + } + + releaseInputBuffer(inputBuffer); + } + + return null; + } + + private void releaseInputBuffer(CeaInputBuffer inputBuffer) { + inputBuffer.clear(); + availableInputBuffers.add(inputBuffer); + } + + protected void releaseOutputBuffer(SubtitleOutputBuffer outputBuffer) { + outputBuffer.clear(); + availableOutputBuffers.add(outputBuffer); + } + + @Override + public void flush() { + queuedInputBufferCount = 0; + playbackPositionUs = 0; + while (!queuedInputBuffers.isEmpty()) { + releaseInputBuffer(queuedInputBuffers.poll()); + } + if (dequeuedInputBuffer != null) { + releaseInputBuffer(dequeuedInputBuffer); + dequeuedInputBuffer = null; + } + } + + @Override + public void release() { + // Do nothing + } + + /** + * Returns whether there is data available to create a new {@link Subtitle}. + */ + protected abstract boolean isNewSubtitleDataAvailable(); + + /** + * Creates a {@link Subtitle} from the available data. + */ + protected abstract Subtitle createSubtitle(); + + /** + * Filters and processes the raw data, providing {@link Subtitle}s via {@link #createSubtitle()} + * when sufficient data has been processed. + */ + protected abstract void decode(SubtitleInputBuffer inputBuffer); + + private static final class CeaInputBuffer extends SubtitleInputBuffer + implements Comparable { + + private long queuedInputBufferCount; + + @Override + public int compareTo(@NonNull CeaInputBuffer other) { + if (isEndOfStream() != other.isEndOfStream()) { + return isEndOfStream() ? 1 : -1; + } + long delta = timeUs - other.timeUs; + if (delta == 0) { + delta = queuedInputBufferCount - other.queuedInputBufferCount; + if (delta == 0) { + return 0; + } + } + return delta > 0 ? 1 : -1; + } + } + + private final class CeaOutputBuffer extends SubtitleOutputBuffer { + + @Override + public final void release() { + releaseOutputBuffer(this); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/CeaSubtitle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/CeaSubtitle.java new file mode 100644 index 0000000000..f4649c4c4b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/CeaSubtitle.java @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.Collections; +import java.util.List; + +/** + * A representation of a CEA subtitle. + */ +/* package */ final class CeaSubtitle implements Subtitle { + + private final List cues; + + /** + * @param cues The subtitle cues. + */ + public CeaSubtitle(List cues) { + this.cues = cues; + } + + @Override + public int getNextEventTimeIndex(long timeUs) { + return timeUs < 0 ? 0 : C.INDEX_UNSET; + } + + @Override + public int getEventTimeCount() { + return 1; + } + + @Override + public long getEventTime(int index) { + Assertions.checkArgument(index == 0); + return 0; + } + + @Override + public List getCues(long timeUs) { + return timeUs >= 0 ? cues : Collections.emptyList(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/CeaUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/CeaUtil.java new file mode 100644 index 0000000000..ced169ba17 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/CeaUtil.java @@ -0,0 +1,138 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.TrackOutput; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; + +/** Utility methods for handling CEA-608/708 messages. Defined in A/53 Part 4:2009. */ +public final class CeaUtil { + + private static final String TAG = "CeaUtil"; + + public static final int USER_DATA_IDENTIFIER_GA94 = 0x47413934; + public static final int USER_DATA_TYPE_CODE_MPEG_CC = 0x3; + + private static final int PAYLOAD_TYPE_CC = 4; + private static final int COUNTRY_CODE = 0xB5; + private static final int PROVIDER_CODE_ATSC = 0x31; + private static final int PROVIDER_CODE_DIRECTV = 0x2F; + + /** + * Consumes the unescaped content of an SEI NAL unit, writing the content of any CEA-608 messages + * as samples to all of the provided outputs. + * + * @param presentationTimeUs The presentation time in microseconds for any samples. + * @param seiBuffer The unescaped SEI NAL unit data, excluding the NAL unit start code and type. + * @param outputs The outputs to which any samples should be written. + */ + public static void consume(long presentationTimeUs, ParsableByteArray seiBuffer, + TrackOutput[] outputs) { + while (seiBuffer.bytesLeft() > 1 /* last byte will be rbsp_trailing_bits */) { + int payloadType = readNon255TerminatedValue(seiBuffer); + int payloadSize = readNon255TerminatedValue(seiBuffer); + int nextPayloadPosition = seiBuffer.getPosition() + payloadSize; + // Process the payload. + if (payloadSize == -1 || payloadSize > seiBuffer.bytesLeft()) { + // This might occur if we're trying to read an encrypted SEI NAL unit. + Log.w(TAG, "Skipping remainder of malformed SEI NAL unit."); + nextPayloadPosition = seiBuffer.limit(); + } else if (payloadType == PAYLOAD_TYPE_CC && payloadSize >= 8) { + int countryCode = seiBuffer.readUnsignedByte(); + int providerCode = seiBuffer.readUnsignedShort(); + int userIdentifier = 0; + if (providerCode == PROVIDER_CODE_ATSC) { + userIdentifier = seiBuffer.readInt(); + } + int userDataTypeCode = seiBuffer.readUnsignedByte(); + if (providerCode == PROVIDER_CODE_DIRECTV) { + seiBuffer.skipBytes(1); // user_data_length. + } + boolean messageIsSupportedCeaCaption = + countryCode == COUNTRY_CODE + && (providerCode == PROVIDER_CODE_ATSC || providerCode == PROVIDER_CODE_DIRECTV) + && userDataTypeCode == USER_DATA_TYPE_CODE_MPEG_CC; + if (providerCode == PROVIDER_CODE_ATSC) { + messageIsSupportedCeaCaption &= userIdentifier == USER_DATA_IDENTIFIER_GA94; + } + if (messageIsSupportedCeaCaption) { + consumeCcData(presentationTimeUs, seiBuffer, outputs); + } + } + seiBuffer.setPosition(nextPayloadPosition); + } + } + + /** + * Consumes caption data (cc_data), writing the content as samples to all of the provided outputs. + * + * @param presentationTimeUs The presentation time in microseconds for any samples. + * @param ccDataBuffer The buffer containing the caption data. + * @param outputs The outputs to which any samples should be written. + */ + public static void consumeCcData( + long presentationTimeUs, ParsableByteArray ccDataBuffer, TrackOutput[] outputs) { + // First byte contains: reserved (1), process_cc_data_flag (1), zero_bit (1), cc_count (5). + int firstByte = ccDataBuffer.readUnsignedByte(); + boolean processCcDataFlag = (firstByte & 0x40) != 0; + if (!processCcDataFlag) { + // No need to process. + return; + } + int ccCount = firstByte & 0x1F; + ccDataBuffer.skipBytes(1); // Ignore em_data + // Each data packet consists of 24 bits: marker bits (5) + cc_valid (1) + cc_type (2) + // + cc_data_1 (8) + cc_data_2 (8). + int sampleLength = ccCount * 3; + int sampleStartPosition = ccDataBuffer.getPosition(); + for (TrackOutput output : outputs) { + ccDataBuffer.setPosition(sampleStartPosition); + output.sampleData(ccDataBuffer, sampleLength); + output.sampleMetadata( + presentationTimeUs, + C.BUFFER_FLAG_KEY_FRAME, + sampleLength, + /* offset= */ 0, + /* encryptionData= */ null); + } + } + + /** + * Reads a value from the provided buffer consisting of zero or more 0xFF bytes followed by a + * terminating byte not equal to 0xFF. The returned value is ((0xFF * N) + T), where N is the + * number of 0xFF bytes and T is the value of the terminating byte. + * + * @param buffer The buffer from which to read the value. + * @return The read value, or -1 if the end of the buffer is reached before a value is read. + */ + private static int readNon255TerminatedValue(ParsableByteArray buffer) { + int b; + int value = 0; + do { + if (buffer.bytesLeft() == 0) { + return -1; + } + b = buffer.readUnsignedByte(); + value += b; + } while (b == 0xFF); + return value; + } + + private CeaUtil() {} + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/package-info.java new file mode 100644 index 0000000000..e80d06586a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/cea/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.cea; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/DvbDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/DvbDecoder.java new file mode 100644 index 0000000000..063872ae2e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/DvbDecoder.java @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.dvb; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SimpleSubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.List; + +/** A {@link SimpleSubtitleDecoder} for DVB subtitles. */ +public final class DvbDecoder extends SimpleSubtitleDecoder { + + private final DvbParser parser; + + /** + * @param initializationData The initialization data for the decoder. The initialization data + * must consist of a single byte array containing 5 bytes: flag_pes_stripped (1), + * composition_page (2), ancillary_page (2). + */ + public DvbDecoder(List initializationData) { + super("DvbDecoder"); + ParsableByteArray data = new ParsableByteArray(initializationData.get(0)); + int subtitleCompositionPage = data.readUnsignedShort(); + int subtitleAncillaryPage = data.readUnsignedShort(); + parser = new DvbParser(subtitleCompositionPage, subtitleAncillaryPage); + } + + @Override + protected Subtitle decode(byte[] data, int length, boolean reset) { + if (reset) { + parser.reset(); + } + return new DvbSubtitle(parser.decode(data, length)); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/DvbParser.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/DvbParser.java new file mode 100644 index 0000000000..839c206ad7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/DvbParser.java @@ -0,0 +1,1059 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.dvb; + +import android.graphics.Bitmap; +import android.graphics.Canvas; +import android.graphics.Color; +import android.graphics.Paint; +import android.graphics.PorterDuff; +import android.graphics.PorterDuffXfermode; +import android.util.SparseArray; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * Parses {@link Cue}s from a DVB subtitle bitstream. + */ +/* package */ final class DvbParser { + + private static final String TAG = "DvbParser"; + + // Segment types, as defined by ETSI EN 300 743 Table 2 + private static final int SEGMENT_TYPE_PAGE_COMPOSITION = 0x10; + private static final int SEGMENT_TYPE_REGION_COMPOSITION = 0x11; + private static final int SEGMENT_TYPE_CLUT_DEFINITION = 0x12; + private static final int SEGMENT_TYPE_OBJECT_DATA = 0x13; + private static final int SEGMENT_TYPE_DISPLAY_DEFINITION = 0x14; + + // Page states, as defined by ETSI EN 300 743 Table 3 + private static final int PAGE_STATE_NORMAL = 0; // Update. Only changed elements. + // private static final int PAGE_STATE_ACQUISITION = 1; // Refresh. All elements. + // private static final int PAGE_STATE_CHANGE = 2; // New. All elements. + + // Region depths, as defined by ETSI EN 300 743 Table 5 + // private static final int REGION_DEPTH_2_BIT = 1; + private static final int REGION_DEPTH_4_BIT = 2; + private static final int REGION_DEPTH_8_BIT = 3; + + // Object codings, as defined by ETSI EN 300 743 Table 8 + private static final int OBJECT_CODING_PIXELS = 0; + private static final int OBJECT_CODING_STRING = 1; + + // Pixel-data types, as defined by ETSI EN 300 743 Table 9 + private static final int DATA_TYPE_2BP_CODE_STRING = 0x10; + private static final int DATA_TYPE_4BP_CODE_STRING = 0x11; + private static final int DATA_TYPE_8BP_CODE_STRING = 0x12; + private static final int DATA_TYPE_24_TABLE_DATA = 0x20; + private static final int DATA_TYPE_28_TABLE_DATA = 0x21; + private static final int DATA_TYPE_48_TABLE_DATA = 0x22; + private static final int DATA_TYPE_END_LINE = 0xF0; + + // Clut mapping tables, as defined by ETSI EN 300 743 10.4, 10.5, 10.6 + private static final byte[] defaultMap2To4 = { + (byte) 0x00, (byte) 0x07, (byte) 0x08, (byte) 0x0F}; + private static final byte[] defaultMap2To8 = { + (byte) 0x00, (byte) 0x77, (byte) 0x88, (byte) 0xFF}; + private static final byte[] defaultMap4To8 = { + (byte) 0x00, (byte) 0x11, (byte) 0x22, (byte) 0x33, + (byte) 0x44, (byte) 0x55, (byte) 0x66, (byte) 0x77, + (byte) 0x88, (byte) 0x99, (byte) 0xAA, (byte) 0xBB, + (byte) 0xCC, (byte) 0xDD, (byte) 0xEE, (byte) 0xFF}; + + private final Paint defaultPaint; + private final Paint fillRegionPaint; + private final Canvas canvas; + private final DisplayDefinition defaultDisplayDefinition; + private final ClutDefinition defaultClutDefinition; + private final SubtitleService subtitleService; + + @MonotonicNonNull private Bitmap bitmap; + + /** + * Construct an instance for the given subtitle and ancillary page ids. + * + * @param subtitlePageId The id of the subtitle page carrying the subtitle to be parsed. + * @param ancillaryPageId The id of the ancillary page containing additional data. + */ + public DvbParser(int subtitlePageId, int ancillaryPageId) { + defaultPaint = new Paint(); + defaultPaint.setStyle(Paint.Style.FILL_AND_STROKE); + defaultPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC)); + defaultPaint.setPathEffect(null); + fillRegionPaint = new Paint(); + fillRegionPaint.setStyle(Paint.Style.FILL); + fillRegionPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OVER)); + fillRegionPaint.setPathEffect(null); + canvas = new Canvas(); + defaultDisplayDefinition = new DisplayDefinition(719, 575, 0, 719, 0, 575); + defaultClutDefinition = new ClutDefinition(0, generateDefault2BitClutEntries(), + generateDefault4BitClutEntries(), generateDefault8BitClutEntries()); + subtitleService = new SubtitleService(subtitlePageId, ancillaryPageId); + } + + /** + * Resets the parser. + */ + public void reset() { + subtitleService.reset(); + } + + /** + * Decodes a subtitling packet, returning a list of parsed {@link Cue}s. + * + * @param data The subtitling packet data to decode. + * @param limit The limit in {@code data} at which to stop decoding. + * @return The parsed {@link Cue}s. + */ + public List decode(byte[] data, int limit) { + // Parse the input data. + ParsableBitArray dataBitArray = new ParsableBitArray(data, limit); + while (dataBitArray.bitsLeft() >= 48 // sync_byte (8) + segment header (40) + && dataBitArray.readBits(8) == 0x0F) { + parseSubtitlingSegment(dataBitArray, subtitleService); + } + + @Nullable PageComposition pageComposition = subtitleService.pageComposition; + if (pageComposition == null) { + return Collections.emptyList(); + } + + // Update the canvas bitmap if necessary. + DisplayDefinition displayDefinition = subtitleService.displayDefinition != null + ? subtitleService.displayDefinition : defaultDisplayDefinition; + if (bitmap == null || displayDefinition.width + 1 != bitmap.getWidth() + || displayDefinition.height + 1 != bitmap.getHeight()) { + bitmap = Bitmap.createBitmap(displayDefinition.width + 1, displayDefinition.height + 1, + Bitmap.Config.ARGB_8888); + canvas.setBitmap(bitmap); + } + + // Build the cues. + List cues = new ArrayList<>(); + SparseArray pageRegions = pageComposition.regions; + for (int i = 0; i < pageRegions.size(); i++) { + // Save clean clipping state. + canvas.save(); + PageRegion pageRegion = pageRegions.valueAt(i); + int regionId = pageRegions.keyAt(i); + RegionComposition regionComposition = subtitleService.regions.get(regionId); + + // Clip drawing to the current region and display definition window. + int baseHorizontalAddress = pageRegion.horizontalAddress + + displayDefinition.horizontalPositionMinimum; + int baseVerticalAddress = pageRegion.verticalAddress + + displayDefinition.verticalPositionMinimum; + int clipRight = Math.min(baseHorizontalAddress + regionComposition.width, + displayDefinition.horizontalPositionMaximum); + int clipBottom = Math.min(baseVerticalAddress + regionComposition.height, + displayDefinition.verticalPositionMaximum); + canvas.clipRect(baseHorizontalAddress, baseVerticalAddress, clipRight, clipBottom); + ClutDefinition clutDefinition = subtitleService.cluts.get(regionComposition.clutId); + if (clutDefinition == null) { + clutDefinition = subtitleService.ancillaryCluts.get(regionComposition.clutId); + if (clutDefinition == null) { + clutDefinition = defaultClutDefinition; + } + } + + SparseArray regionObjects = regionComposition.regionObjects; + for (int j = 0; j < regionObjects.size(); j++) { + int objectId = regionObjects.keyAt(j); + RegionObject regionObject = regionObjects.valueAt(j); + ObjectData objectData = subtitleService.objects.get(objectId); + if (objectData == null) { + objectData = subtitleService.ancillaryObjects.get(objectId); + } + if (objectData != null) { + @Nullable Paint paint = objectData.nonModifyingColorFlag ? null : defaultPaint; + paintPixelDataSubBlocks(objectData, clutDefinition, regionComposition.depth, + baseHorizontalAddress + regionObject.horizontalPosition, + baseVerticalAddress + regionObject.verticalPosition, paint, canvas); + } + } + + if (regionComposition.fillFlag) { + int color; + if (regionComposition.depth == REGION_DEPTH_8_BIT) { + color = clutDefinition.clutEntries8Bit[regionComposition.pixelCode8Bit]; + } else if (regionComposition.depth == REGION_DEPTH_4_BIT) { + color = clutDefinition.clutEntries4Bit[regionComposition.pixelCode4Bit]; + } else { + color = clutDefinition.clutEntries2Bit[regionComposition.pixelCode2Bit]; + } + fillRegionPaint.setColor(color); + canvas.drawRect(baseHorizontalAddress, baseVerticalAddress, + baseHorizontalAddress + regionComposition.width, + baseVerticalAddress + regionComposition.height, + fillRegionPaint); + } + + Bitmap cueBitmap = Bitmap.createBitmap(bitmap, baseHorizontalAddress, baseVerticalAddress, + regionComposition.width, regionComposition.height); + cues.add(new Cue(cueBitmap, (float) baseHorizontalAddress / displayDefinition.width, + Cue.ANCHOR_TYPE_START, (float) baseVerticalAddress / displayDefinition.height, + Cue.ANCHOR_TYPE_START, (float) regionComposition.width / displayDefinition.width, + (float) regionComposition.height / displayDefinition.height)); + + canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR); + // Restore clean clipping state. + canvas.restore(); + } + + return Collections.unmodifiableList(cues); + } + + // Static parsing. + + /** + * Parses a subtitling segment, as defined by ETSI EN 300 743 7.2 + *

+ * The {@link SubtitleService} is updated with the parsed segment data. + */ + private static void parseSubtitlingSegment(ParsableBitArray data, SubtitleService service) { + int segmentType = data.readBits(8); + int pageId = data.readBits(16); + int dataFieldLength = data.readBits(16); + int dataFieldLimit = data.getBytePosition() + dataFieldLength; + + if ((dataFieldLength * 8) > data.bitsLeft()) { + Log.w(TAG, "Data field length exceeds limit"); + // Skip to the very end. + data.skipBits(data.bitsLeft()); + return; + } + + switch (segmentType) { + case SEGMENT_TYPE_DISPLAY_DEFINITION: + if (pageId == service.subtitlePageId) { + service.displayDefinition = parseDisplayDefinition(data); + } + break; + case SEGMENT_TYPE_PAGE_COMPOSITION: + if (pageId == service.subtitlePageId) { + @Nullable PageComposition current = service.pageComposition; + PageComposition pageComposition = parsePageComposition(data, dataFieldLength); + if (pageComposition.state != PAGE_STATE_NORMAL) { + service.pageComposition = pageComposition; + service.regions.clear(); + service.cluts.clear(); + service.objects.clear(); + } else if (current != null && current.version != pageComposition.version) { + service.pageComposition = pageComposition; + } + } + break; + case SEGMENT_TYPE_REGION_COMPOSITION: + @Nullable PageComposition pageComposition = service.pageComposition; + if (pageId == service.subtitlePageId && pageComposition != null) { + RegionComposition regionComposition = parseRegionComposition(data, dataFieldLength); + if (pageComposition.state == PAGE_STATE_NORMAL) { + @Nullable + RegionComposition existingRegionComposition = service.regions.get(regionComposition.id); + if (existingRegionComposition != null) { + regionComposition.mergeFrom(existingRegionComposition); + } + } + service.regions.put(regionComposition.id, regionComposition); + } + break; + case SEGMENT_TYPE_CLUT_DEFINITION: + if (pageId == service.subtitlePageId) { + ClutDefinition clutDefinition = parseClutDefinition(data, dataFieldLength); + service.cluts.put(clutDefinition.id, clutDefinition); + } else if (pageId == service.ancillaryPageId) { + ClutDefinition clutDefinition = parseClutDefinition(data, dataFieldLength); + service.ancillaryCluts.put(clutDefinition.id, clutDefinition); + } + break; + case SEGMENT_TYPE_OBJECT_DATA: + if (pageId == service.subtitlePageId) { + ObjectData objectData = parseObjectData(data); + service.objects.put(objectData.id, objectData); + } else if (pageId == service.ancillaryPageId) { + ObjectData objectData = parseObjectData(data); + service.ancillaryObjects.put(objectData.id, objectData); + } + break; + default: + // Do nothing. + break; + } + + // Skip to the next segment. + data.skipBytes(dataFieldLimit - data.getBytePosition()); + } + + /** + * Parses a display definition segment, as defined by ETSI EN 300 743 7.2.1. + */ + private static DisplayDefinition parseDisplayDefinition(ParsableBitArray data) { + data.skipBits(4); // dds_version_number (4). + boolean displayWindowFlag = data.readBit(); + data.skipBits(3); // Skip reserved. + int width = data.readBits(16); + int height = data.readBits(16); + + int horizontalPositionMinimum; + int horizontalPositionMaximum; + int verticalPositionMinimum; + int verticalPositionMaximum; + if (displayWindowFlag) { + horizontalPositionMinimum = data.readBits(16); + horizontalPositionMaximum = data.readBits(16); + verticalPositionMinimum = data.readBits(16); + verticalPositionMaximum = data.readBits(16); + } else { + horizontalPositionMinimum = 0; + horizontalPositionMaximum = width; + verticalPositionMinimum = 0; + verticalPositionMaximum = height; + } + + return new DisplayDefinition(width, height, horizontalPositionMinimum, + horizontalPositionMaximum, verticalPositionMinimum, verticalPositionMaximum); + } + + /** + * Parses a page composition segment, as defined by ETSI EN 300 743 7.2.2. + */ + private static PageComposition parsePageComposition(ParsableBitArray data, int length) { + int timeoutSecs = data.readBits(8); + int version = data.readBits(4); + int state = data.readBits(2); + data.skipBits(2); + int remainingLength = length - 2; + + SparseArray regions = new SparseArray<>(); + while (remainingLength > 0) { + int regionId = data.readBits(8); + data.skipBits(8); // Skip reserved. + int regionHorizontalAddress = data.readBits(16); + int regionVerticalAddress = data.readBits(16); + remainingLength -= 6; + regions.put(regionId, new PageRegion(regionHorizontalAddress, regionVerticalAddress)); + } + + return new PageComposition(timeoutSecs, version, state, regions); + } + + /** + * Parses a region composition segment, as defined by ETSI EN 300 743 7.2.3. + */ + private static RegionComposition parseRegionComposition(ParsableBitArray data, int length) { + int id = data.readBits(8); + data.skipBits(4); // Skip region_version_number + boolean fillFlag = data.readBit(); + data.skipBits(3); // Skip reserved. + int width = data.readBits(16); + int height = data.readBits(16); + int levelOfCompatibility = data.readBits(3); + int depth = data.readBits(3); + data.skipBits(2); // Skip reserved. + int clutId = data.readBits(8); + int pixelCode8Bit = data.readBits(8); + int pixelCode4Bit = data.readBits(4); + int pixelCode2Bit = data.readBits(2); + data.skipBits(2); // Skip reserved + int remainingLength = length - 10; + + SparseArray regionObjects = new SparseArray<>(); + while (remainingLength > 0) { + int objectId = data.readBits(16); + int objectType = data.readBits(2); + int objectProvider = data.readBits(2); + int objectHorizontalPosition = data.readBits(12); + data.skipBits(4); // Skip reserved. + int objectVerticalPosition = data.readBits(12); + remainingLength -= 6; + + int foregroundPixelCode = 0; + int backgroundPixelCode = 0; + if (objectType == 0x01 || objectType == 0x02) { // Only seems to affect to char subtitles. + foregroundPixelCode = data.readBits(8); + backgroundPixelCode = data.readBits(8); + remainingLength -= 2; + } + + regionObjects.put(objectId, new RegionObject(objectType, objectProvider, + objectHorizontalPosition, objectVerticalPosition, foregroundPixelCode, + backgroundPixelCode)); + } + + return new RegionComposition(id, fillFlag, width, height, levelOfCompatibility, depth, clutId, + pixelCode8Bit, pixelCode4Bit, pixelCode2Bit, regionObjects); + } + + /** + * Parses a CLUT definition segment, as defined by ETSI EN 300 743 7.2.4. + */ + private static ClutDefinition parseClutDefinition(ParsableBitArray data, int length) { + int clutId = data.readBits(8); + data.skipBits(8); // Skip clut_version_number (4), reserved (4) + int remainingLength = length - 2; + + int[] clutEntries2Bit = generateDefault2BitClutEntries(); + int[] clutEntries4Bit = generateDefault4BitClutEntries(); + int[] clutEntries8Bit = generateDefault8BitClutEntries(); + + while (remainingLength > 0) { + int entryId = data.readBits(8); + int entryFlags = data.readBits(8); + remainingLength -= 2; + + int[] clutEntries; + if ((entryFlags & 0x80) != 0) { + clutEntries = clutEntries2Bit; + } else if ((entryFlags & 0x40) != 0) { + clutEntries = clutEntries4Bit; + } else { + clutEntries = clutEntries8Bit; + } + + int y; + int cr; + int cb; + int t; + if ((entryFlags & 0x01) != 0) { + y = data.readBits(8); + cr = data.readBits(8); + cb = data.readBits(8); + t = data.readBits(8); + remainingLength -= 4; + } else { + y = data.readBits(6) << 2; + cr = data.readBits(4) << 4; + cb = data.readBits(4) << 4; + t = data.readBits(2) << 6; + remainingLength -= 2; + } + + if (y == 0x00) { + cr = 0x00; + cb = 0x00; + t = 0xFF; + } + + int a = (byte) (0xFF - (t & 0xFF)); + int r = (int) (y + (1.40200 * (cr - 128))); + int g = (int) (y - (0.34414 * (cb - 128)) - (0.71414 * (cr - 128))); + int b = (int) (y + (1.77200 * (cb - 128))); + clutEntries[entryId] = getColor(a, Util.constrainValue(r, 0, 255), + Util.constrainValue(g, 0, 255), Util.constrainValue(b, 0, 255)); + } + + return new ClutDefinition(clutId, clutEntries2Bit, clutEntries4Bit, clutEntries8Bit); + } + + /** + * Parses an object data segment, as defined by ETSI EN 300 743 7.2.5. + * + * @return The parsed object data. + */ + private static ObjectData parseObjectData(ParsableBitArray data) { + int objectId = data.readBits(16); + data.skipBits(4); // Skip object_version_number + int objectCodingMethod = data.readBits(2); + boolean nonModifyingColorFlag = data.readBit(); + data.skipBits(1); // Skip reserved. + + @Nullable byte[] topFieldData = null; + @Nullable byte[] bottomFieldData = null; + + if (objectCodingMethod == OBJECT_CODING_STRING) { + int numberOfCodes = data.readBits(8); + // TODO: Parse and use character_codes. + data.skipBits(numberOfCodes * 16); // Skip character_codes. + } else if (objectCodingMethod == OBJECT_CODING_PIXELS) { + int topFieldDataLength = data.readBits(16); + int bottomFieldDataLength = data.readBits(16); + if (topFieldDataLength > 0) { + topFieldData = new byte[topFieldDataLength]; + data.readBytes(topFieldData, 0, topFieldDataLength); + } + if (bottomFieldDataLength > 0) { + bottomFieldData = new byte[bottomFieldDataLength]; + data.readBytes(bottomFieldData, 0, bottomFieldDataLength); + } else { + bottomFieldData = topFieldData; + } + } + + return new ObjectData(objectId, nonModifyingColorFlag, topFieldData, bottomFieldData); + } + + private static int[] generateDefault2BitClutEntries() { + int[] entries = new int[4]; + entries[0] = 0x00000000; + entries[1] = 0xFFFFFFFF; + entries[2] = 0xFF000000; + entries[3] = 0xFF7F7F7F; + return entries; + } + + private static int[] generateDefault4BitClutEntries() { + int[] entries = new int[16]; + entries[0] = 0x00000000; + for (int i = 1; i < entries.length; i++) { + if (i < 8) { + entries[i] = getColor( + 0xFF, + ((i & 0x01) != 0 ? 0xFF : 0x00), + ((i & 0x02) != 0 ? 0xFF : 0x00), + ((i & 0x04) != 0 ? 0xFF : 0x00)); + } else { + entries[i] = getColor( + 0xFF, + ((i & 0x01) != 0 ? 0x7F : 0x00), + ((i & 0x02) != 0 ? 0x7F : 0x00), + ((i & 0x04) != 0 ? 0x7F : 0x00)); + } + } + return entries; + } + + private static int[] generateDefault8BitClutEntries() { + int[] entries = new int[256]; + entries[0] = 0x00000000; + for (int i = 0; i < entries.length; i++) { + if (i < 8) { + entries[i] = getColor( + 0x3F, + ((i & 0x01) != 0 ? 0xFF : 0x00), + ((i & 0x02) != 0 ? 0xFF : 0x00), + ((i & 0x04) != 0 ? 0xFF : 0x00)); + } else { + switch (i & 0x88) { + case 0x00: + entries[i] = getColor( + 0xFF, + (((i & 0x01) != 0 ? 0x55 : 0x00) + ((i & 0x10) != 0 ? 0xAA : 0x00)), + (((i & 0x02) != 0 ? 0x55 : 0x00) + ((i & 0x20) != 0 ? 0xAA : 0x00)), + (((i & 0x04) != 0 ? 0x55 : 0x00) + ((i & 0x40) != 0 ? 0xAA : 0x00))); + break; + case 0x08: + entries[i] = getColor( + 0x7F, + (((i & 0x01) != 0 ? 0x55 : 0x00) + ((i & 0x10) != 0 ? 0xAA : 0x00)), + (((i & 0x02) != 0 ? 0x55 : 0x00) + ((i & 0x20) != 0 ? 0xAA : 0x00)), + (((i & 0x04) != 0 ? 0x55 : 0x00) + ((i & 0x40) != 0 ? 0xAA : 0x00))); + break; + case 0x80: + entries[i] = getColor( + 0xFF, + (127 + ((i & 0x01) != 0 ? 0x2B : 0x00) + ((i & 0x10) != 0 ? 0x55 : 0x00)), + (127 + ((i & 0x02) != 0 ? 0x2B : 0x00) + ((i & 0x20) != 0 ? 0x55 : 0x00)), + (127 + ((i & 0x04) != 0 ? 0x2B : 0x00) + ((i & 0x40) != 0 ? 0x55 : 0x00))); + break; + case 0x88: + entries[i] = getColor( + 0xFF, + (((i & 0x01) != 0 ? 0x2B : 0x00) + ((i & 0x10) != 0 ? 0x55 : 0x00)), + (((i & 0x02) != 0 ? 0x2B : 0x00) + ((i & 0x20) != 0 ? 0x55 : 0x00)), + (((i & 0x04) != 0 ? 0x2B : 0x00) + ((i & 0x40) != 0 ? 0x55 : 0x00))); + break; + } + } + } + return entries; + } + + private static int getColor(int a, int r, int g, int b) { + return (a << 24) | (r << 16) | (g << 8) | b; + } + + // Static drawing. + + /** Draws a pixel data sub-block, as defined by ETSI EN 300 743 7.2.5.1, into a canvas. */ + private static void paintPixelDataSubBlocks( + ObjectData objectData, + ClutDefinition clutDefinition, + int regionDepth, + int horizontalAddress, + int verticalAddress, + @Nullable Paint paint, + Canvas canvas) { + int[] clutEntries; + if (regionDepth == REGION_DEPTH_8_BIT) { + clutEntries = clutDefinition.clutEntries8Bit; + } else if (regionDepth == REGION_DEPTH_4_BIT) { + clutEntries = clutDefinition.clutEntries4Bit; + } else { + clutEntries = clutDefinition.clutEntries2Bit; + } + paintPixelDataSubBlock(objectData.topFieldData, clutEntries, regionDepth, horizontalAddress, + verticalAddress, paint, canvas); + paintPixelDataSubBlock(objectData.bottomFieldData, clutEntries, regionDepth, horizontalAddress, + verticalAddress + 1, paint, canvas); + } + + /** Draws a pixel data sub-block, as defined by ETSI EN 300 743 7.2.5.1, into a canvas. */ + private static void paintPixelDataSubBlock( + byte[] pixelData, + int[] clutEntries, + int regionDepth, + int horizontalAddress, + int verticalAddress, + @Nullable Paint paint, + Canvas canvas) { + ParsableBitArray data = new ParsableBitArray(pixelData); + int column = horizontalAddress; + int line = verticalAddress; + @Nullable byte[] clutMapTable2To4 = null; + @Nullable byte[] clutMapTable2To8 = null; + @Nullable byte[] clutMapTable4To8 = null; + + while (data.bitsLeft() != 0) { + int dataType = data.readBits(8); + switch (dataType) { + case DATA_TYPE_2BP_CODE_STRING: + @Nullable byte[] clutMapTable2ToX; + if (regionDepth == REGION_DEPTH_8_BIT) { + clutMapTable2ToX = clutMapTable2To8 == null ? defaultMap2To8 : clutMapTable2To8; + } else if (regionDepth == REGION_DEPTH_4_BIT) { + clutMapTable2ToX = clutMapTable2To4 == null ? defaultMap2To4 : clutMapTable2To4; + } else { + clutMapTable2ToX = null; + } + column = paint2BitPixelCodeString(data, clutEntries, clutMapTable2ToX, column, line, + paint, canvas); + data.byteAlign(); + break; + case DATA_TYPE_4BP_CODE_STRING: + @Nullable byte[] clutMapTable4ToX; + if (regionDepth == REGION_DEPTH_8_BIT) { + clutMapTable4ToX = clutMapTable4To8 == null ? defaultMap4To8 : clutMapTable4To8; + } else { + clutMapTable4ToX = null; + } + column = paint4BitPixelCodeString(data, clutEntries, clutMapTable4ToX, column, line, + paint, canvas); + data.byteAlign(); + break; + case DATA_TYPE_8BP_CODE_STRING: + column = + paint8BitPixelCodeString( + data, clutEntries, /* clutMapTable= */ null, column, line, paint, canvas); + break; + case DATA_TYPE_24_TABLE_DATA: + clutMapTable2To4 = buildClutMapTable(4, 4, data); + break; + case DATA_TYPE_28_TABLE_DATA: + clutMapTable2To8 = buildClutMapTable(4, 8, data); + break; + case DATA_TYPE_48_TABLE_DATA: + clutMapTable4To8 = buildClutMapTable(16, 8, data); + break; + case DATA_TYPE_END_LINE: + column = horizontalAddress; + line += 2; + break; + default: + // Do nothing. + break; + } + } + } + + /** Paint a 2-bit/pixel code string, as defined by ETSI EN 300 743 7.2.5.2, to a canvas. */ + private static int paint2BitPixelCodeString( + ParsableBitArray data, + int[] clutEntries, + @Nullable byte[] clutMapTable, + int column, + int line, + @Nullable Paint paint, + Canvas canvas) { + boolean endOfPixelCodeString = false; + do { + int runLength = 0; + int clutIndex = 0; + int peek = data.readBits(2); + if (peek != 0x00) { + runLength = 1; + clutIndex = peek; + } else if (data.readBit()) { + runLength = 3 + data.readBits(3); + clutIndex = data.readBits(2); + } else if (data.readBit()) { + runLength = 1; + } else { + switch (data.readBits(2)) { + case 0x00: + endOfPixelCodeString = true; + break; + case 0x01: + runLength = 2; + break; + case 0x02: + runLength = 12 + data.readBits(4); + clutIndex = data.readBits(2); + break; + case 0x03: + runLength = 29 + data.readBits(8); + clutIndex = data.readBits(2); + break; + } + } + + if (runLength != 0 && paint != null) { + paint.setColor(clutEntries[clutMapTable != null ? clutMapTable[clutIndex] : clutIndex]); + canvas.drawRect(column, line, column + runLength, line + 1, paint); + } + + column += runLength; + } while (!endOfPixelCodeString); + + return column; + } + + /** Paint a 4-bit/pixel code string, as defined by ETSI EN 300 743 7.2.5.2, to a canvas. */ + private static int paint4BitPixelCodeString( + ParsableBitArray data, + int[] clutEntries, + @Nullable byte[] clutMapTable, + int column, + int line, + @Nullable Paint paint, + Canvas canvas) { + boolean endOfPixelCodeString = false; + do { + int runLength = 0; + int clutIndex = 0; + int peek = data.readBits(4); + if (peek != 0x00) { + runLength = 1; + clutIndex = peek; + } else if (!data.readBit()) { + peek = data.readBits(3); + if (peek != 0x00) { + runLength = 2 + peek; + clutIndex = 0x00; + } else { + endOfPixelCodeString = true; + } + } else if (!data.readBit()) { + runLength = 4 + data.readBits(2); + clutIndex = data.readBits(4); + } else { + switch (data.readBits(2)) { + case 0x00: + runLength = 1; + break; + case 0x01: + runLength = 2; + break; + case 0x02: + runLength = 9 + data.readBits(4); + clutIndex = data.readBits(4); + break; + case 0x03: + runLength = 25 + data.readBits(8); + clutIndex = data.readBits(4); + break; + } + } + + if (runLength != 0 && paint != null) { + paint.setColor(clutEntries[clutMapTable != null ? clutMapTable[clutIndex] : clutIndex]); + canvas.drawRect(column, line, column + runLength, line + 1, paint); + } + + column += runLength; + } while (!endOfPixelCodeString); + + return column; + } + + /** Paint an 8-bit/pixel code string, as defined by ETSI EN 300 743 7.2.5.2, to a canvas. */ + private static int paint8BitPixelCodeString( + ParsableBitArray data, + int[] clutEntries, + @Nullable byte[] clutMapTable, + int column, + int line, + @Nullable Paint paint, + Canvas canvas) { + boolean endOfPixelCodeString = false; + do { + int runLength = 0; + int clutIndex = 0; + int peek = data.readBits(8); + if (peek != 0x00) { + runLength = 1; + clutIndex = peek; + } else { + if (!data.readBit()) { + peek = data.readBits(7); + if (peek != 0x00) { + runLength = peek; + clutIndex = 0x00; + } else { + endOfPixelCodeString = true; + } + } else { + runLength = data.readBits(7); + clutIndex = data.readBits(8); + } + } + + if (runLength != 0 && paint != null) { + paint.setColor(clutEntries[clutMapTable != null ? clutMapTable[clutIndex] : clutIndex]); + canvas.drawRect(column, line, column + runLength, line + 1, paint); + } + column += runLength; + } while (!endOfPixelCodeString); + + return column; + } + + private static byte[] buildClutMapTable(int length, int bitsPerEntry, ParsableBitArray data) { + byte[] clutMapTable = new byte[length]; + for (int i = 0; i < length; i++) { + clutMapTable[i] = (byte) data.readBits(bitsPerEntry); + } + return clutMapTable; + } + + // Private inner classes. + + /** + * The subtitle service definition. + */ + private static final class SubtitleService { + + public final int subtitlePageId; + public final int ancillaryPageId; + + public final SparseArray regions; + public final SparseArray cluts; + public final SparseArray objects; + public final SparseArray ancillaryCluts; + public final SparseArray ancillaryObjects; + + @Nullable public DisplayDefinition displayDefinition; + @Nullable public PageComposition pageComposition; + + public SubtitleService(int subtitlePageId, int ancillaryPageId) { + this.subtitlePageId = subtitlePageId; + this.ancillaryPageId = ancillaryPageId; + regions = new SparseArray<>(); + cluts = new SparseArray<>(); + objects = new SparseArray<>(); + ancillaryCluts = new SparseArray<>(); + ancillaryObjects = new SparseArray<>(); + } + + public void reset() { + regions.clear(); + cluts.clear(); + objects.clear(); + ancillaryCluts.clear(); + ancillaryObjects.clear(); + displayDefinition = null; + pageComposition = null; + } + + } + + /** + * Contains the geometry and active area of the subtitle service. + *

+ * See ETSI EN 300 743 7.2.1 + */ + private static final class DisplayDefinition { + + public final int width; + public final int height; + + public final int horizontalPositionMinimum; + public final int horizontalPositionMaximum; + public final int verticalPositionMinimum; + public final int verticalPositionMaximum; + + public DisplayDefinition(int width, int height, int horizontalPositionMinimum, + int horizontalPositionMaximum, int verticalPositionMinimum, int verticalPositionMaximum) { + this.width = width; + this.height = height; + this.horizontalPositionMinimum = horizontalPositionMinimum; + this.horizontalPositionMaximum = horizontalPositionMaximum; + this.verticalPositionMinimum = verticalPositionMinimum; + this.verticalPositionMaximum = verticalPositionMaximum; + } + + } + + /** + * The page is the definition and arrangement of regions in the screen. + *

+ * See ETSI EN 300 743 7.2.2 + */ + private static final class PageComposition { + + public final int timeOutSecs; // TODO: Use this or remove it. + public final int version; + public final int state; + public final SparseArray regions; + + public PageComposition(int timeoutSecs, int version, int state, + SparseArray regions) { + this.timeOutSecs = timeoutSecs; + this.version = version; + this.state = state; + this.regions = regions; + } + + } + + /** + * A region within a {@link PageComposition}. + *

+ * See ETSI EN 300 743 7.2.2 + */ + private static final class PageRegion { + + public final int horizontalAddress; + public final int verticalAddress; + + public PageRegion(int horizontalAddress, int verticalAddress) { + this.horizontalAddress = horizontalAddress; + this.verticalAddress = verticalAddress; + } + + } + + /** + * An area of the page composed of a list of objects and a CLUT. + *

+ * See ETSI EN 300 743 7.2.3 + */ + private static final class RegionComposition { + + public final int id; + public final boolean fillFlag; + public final int width; + public final int height; + public final int levelOfCompatibility; // TODO: Use this or remove it. + public final int depth; + public final int clutId; + public final int pixelCode8Bit; + public final int pixelCode4Bit; + public final int pixelCode2Bit; + public final SparseArray regionObjects; + + public RegionComposition(int id, boolean fillFlag, int width, int height, + int levelOfCompatibility, int depth, int clutId, int pixelCode8Bit, int pixelCode4Bit, + int pixelCode2Bit, SparseArray regionObjects) { + this.id = id; + this.fillFlag = fillFlag; + this.width = width; + this.height = height; + this.levelOfCompatibility = levelOfCompatibility; + this.depth = depth; + this.clutId = clutId; + this.pixelCode8Bit = pixelCode8Bit; + this.pixelCode4Bit = pixelCode4Bit; + this.pixelCode2Bit = pixelCode2Bit; + this.regionObjects = regionObjects; + } + + public void mergeFrom(RegionComposition otherRegionComposition) { + SparseArray otherRegionObjects = otherRegionComposition.regionObjects; + for (int i = 0; i < otherRegionObjects.size(); i++) { + regionObjects.put(otherRegionObjects.keyAt(i), otherRegionObjects.valueAt(i)); + } + } + + } + + /** + * An object within a {@link RegionComposition}. + *

+ * See ETSI EN 300 743 7.2.3 + */ + private static final class RegionObject { + + public final int type; // TODO: Use this or remove it. + public final int provider; // TODO: Use this or remove it. + public final int horizontalPosition; + public final int verticalPosition; + public final int foregroundPixelCode; // TODO: Use this or remove it. + public final int backgroundPixelCode; // TODO: Use this or remove it. + + public RegionObject(int type, int provider, int horizontalPosition, + int verticalPosition, int foregroundPixelCode, int backgroundPixelCode) { + this.type = type; + this.provider = provider; + this.horizontalPosition = horizontalPosition; + this.verticalPosition = verticalPosition; + this.foregroundPixelCode = foregroundPixelCode; + this.backgroundPixelCode = backgroundPixelCode; + } + + } + + /** + * CLUT family definition containing the color tables for the three bit depths defined + *

+ * See ETSI EN 300 743 7.2.4 + */ + private static final class ClutDefinition { + + public final int id; + public final int[] clutEntries2Bit; + public final int[] clutEntries4Bit; + public final int[] clutEntries8Bit; + + public ClutDefinition(int id, int[] clutEntries2Bit, int[] clutEntries4Bit, + int[] clutEntries8bit) { + this.id = id; + this.clutEntries2Bit = clutEntries2Bit; + this.clutEntries4Bit = clutEntries4Bit; + this.clutEntries8Bit = clutEntries8bit; + } + + } + + /** + * The textual or graphical representation of an object. + *

+ * See ETSI EN 300 743 7.2.5 + */ + private static final class ObjectData { + + public final int id; + public final boolean nonModifyingColorFlag; + public final byte[] topFieldData; + public final byte[] bottomFieldData; + + public ObjectData(int id, boolean nonModifyingColorFlag, byte[] topFieldData, + byte[] bottomFieldData) { + this.id = id; + this.nonModifyingColorFlag = nonModifyingColorFlag; + this.topFieldData = topFieldData; + this.bottomFieldData = bottomFieldData; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/DvbSubtitle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/DvbSubtitle.java new file mode 100644 index 0000000000..a624ddaeae --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/DvbSubtitle.java @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.dvb; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import java.util.List; + +/** + * A representation of a DVB subtitle. + */ +/* package */ final class DvbSubtitle implements Subtitle { + + private final List cues; + + public DvbSubtitle(List cues) { + this.cues = cues; + } + + @Override + public int getNextEventTimeIndex(long timeUs) { + return C.INDEX_UNSET; + } + + @Override + public int getEventTimeCount() { + return 1; + } + + @Override + public long getEventTime(int index) { + return 0; + } + + @Override + public List getCues(long timeUs) { + return cues; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/package-info.java new file mode 100644 index 0000000000..be6b16c5e6 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/dvb/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.dvb; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/package-info.java new file mode 100644 index 0000000000..0b6e0d1f8c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.text; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/pgs/PgsDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/pgs/PgsDecoder.java new file mode 100644 index 0000000000..859d240e9b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/pgs/PgsDecoder.java @@ -0,0 +1,259 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.pgs; + +import android.graphics.Bitmap; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SimpleSubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleDecoderException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.zip.Inflater; + +/** A {@link SimpleSubtitleDecoder} for PGS subtitles. */ +public final class PgsDecoder extends SimpleSubtitleDecoder { + + private static final int SECTION_TYPE_PALETTE = 0x14; + private static final int SECTION_TYPE_BITMAP_PICTURE = 0x15; + private static final int SECTION_TYPE_IDENTIFIER = 0x16; + private static final int SECTION_TYPE_END = 0x80; + + private static final byte INFLATE_HEADER = 0x78; + + private final ParsableByteArray buffer; + private final ParsableByteArray inflatedBuffer; + private final CueBuilder cueBuilder; + + @Nullable private Inflater inflater; + + public PgsDecoder() { + super("PgsDecoder"); + buffer = new ParsableByteArray(); + inflatedBuffer = new ParsableByteArray(); + cueBuilder = new CueBuilder(); + } + + @Override + protected Subtitle decode(byte[] data, int size, boolean reset) throws SubtitleDecoderException { + buffer.reset(data, size); + maybeInflateData(buffer); + cueBuilder.reset(); + ArrayList cues = new ArrayList<>(); + while (buffer.bytesLeft() >= 3) { + Cue cue = readNextSection(buffer, cueBuilder); + if (cue != null) { + cues.add(cue); + } + } + return new PgsSubtitle(Collections.unmodifiableList(cues)); + } + + private void maybeInflateData(ParsableByteArray buffer) { + if (buffer.bytesLeft() > 0 && buffer.peekUnsignedByte() == INFLATE_HEADER) { + if (inflater == null) { + inflater = new Inflater(); + } + if (Util.inflate(buffer, inflatedBuffer, inflater)) { + buffer.reset(inflatedBuffer.data, inflatedBuffer.limit()); + } // else assume data is not compressed. + } + } + + @Nullable + private static Cue readNextSection(ParsableByteArray buffer, CueBuilder cueBuilder) { + int limit = buffer.limit(); + int sectionType = buffer.readUnsignedByte(); + int sectionLength = buffer.readUnsignedShort(); + + int nextSectionPosition = buffer.getPosition() + sectionLength; + if (nextSectionPosition > limit) { + buffer.setPosition(limit); + return null; + } + + Cue cue = null; + switch (sectionType) { + case SECTION_TYPE_PALETTE: + cueBuilder.parsePaletteSection(buffer, sectionLength); + break; + case SECTION_TYPE_BITMAP_PICTURE: + cueBuilder.parseBitmapSection(buffer, sectionLength); + break; + case SECTION_TYPE_IDENTIFIER: + cueBuilder.parseIdentifierSection(buffer, sectionLength); + break; + case SECTION_TYPE_END: + cue = cueBuilder.build(); + cueBuilder.reset(); + break; + default: + break; + } + + buffer.setPosition(nextSectionPosition); + return cue; + } + + private static final class CueBuilder { + + private final ParsableByteArray bitmapData; + private final int[] colors; + + private boolean colorsSet; + private int planeWidth; + private int planeHeight; + private int bitmapX; + private int bitmapY; + private int bitmapWidth; + private int bitmapHeight; + + public CueBuilder() { + bitmapData = new ParsableByteArray(); + colors = new int[256]; + } + + private void parsePaletteSection(ParsableByteArray buffer, int sectionLength) { + if ((sectionLength % 5) != 2) { + // Section must be two bytes followed by a whole number of (index, y, cb, cr, a) entries. + return; + } + buffer.skipBytes(2); + + Arrays.fill(colors, 0); + int entryCount = sectionLength / 5; + for (int i = 0; i < entryCount; i++) { + int index = buffer.readUnsignedByte(); + int y = buffer.readUnsignedByte(); + int cr = buffer.readUnsignedByte(); + int cb = buffer.readUnsignedByte(); + int a = buffer.readUnsignedByte(); + int r = (int) (y + (1.40200 * (cr - 128))); + int g = (int) (y - (0.34414 * (cb - 128)) - (0.71414 * (cr - 128))); + int b = (int) (y + (1.77200 * (cb - 128))); + colors[index] = + (a << 24) + | (Util.constrainValue(r, 0, 255) << 16) + | (Util.constrainValue(g, 0, 255) << 8) + | Util.constrainValue(b, 0, 255); + } + colorsSet = true; + } + + private void parseBitmapSection(ParsableByteArray buffer, int sectionLength) { + if (sectionLength < 4) { + return; + } + buffer.skipBytes(3); // Id (2 bytes), version (1 byte). + boolean isBaseSection = (0x80 & buffer.readUnsignedByte()) != 0; + sectionLength -= 4; + + if (isBaseSection) { + if (sectionLength < 7) { + return; + } + int totalLength = buffer.readUnsignedInt24(); + if (totalLength < 4) { + return; + } + bitmapWidth = buffer.readUnsignedShort(); + bitmapHeight = buffer.readUnsignedShort(); + bitmapData.reset(totalLength - 4); + sectionLength -= 7; + } + + int position = bitmapData.getPosition(); + int limit = bitmapData.limit(); + if (position < limit && sectionLength > 0) { + int bytesToRead = Math.min(sectionLength, limit - position); + buffer.readBytes(bitmapData.data, position, bytesToRead); + bitmapData.setPosition(position + bytesToRead); + } + } + + private void parseIdentifierSection(ParsableByteArray buffer, int sectionLength) { + if (sectionLength < 19) { + return; + } + planeWidth = buffer.readUnsignedShort(); + planeHeight = buffer.readUnsignedShort(); + buffer.skipBytes(11); + bitmapX = buffer.readUnsignedShort(); + bitmapY = buffer.readUnsignedShort(); + } + + @Nullable + public Cue build() { + if (planeWidth == 0 + || planeHeight == 0 + || bitmapWidth == 0 + || bitmapHeight == 0 + || bitmapData.limit() == 0 + || bitmapData.getPosition() != bitmapData.limit() + || !colorsSet) { + return null; + } + // Build the bitmapData. + bitmapData.setPosition(0); + int[] argbBitmapData = new int[bitmapWidth * bitmapHeight]; + int argbBitmapDataIndex = 0; + while (argbBitmapDataIndex < argbBitmapData.length) { + int colorIndex = bitmapData.readUnsignedByte(); + if (colorIndex != 0) { + argbBitmapData[argbBitmapDataIndex++] = colors[colorIndex]; + } else { + int switchBits = bitmapData.readUnsignedByte(); + if (switchBits != 0) { + int runLength = + (switchBits & 0x40) == 0 + ? (switchBits & 0x3F) + : (((switchBits & 0x3F) << 8) | bitmapData.readUnsignedByte()); + int color = (switchBits & 0x80) == 0 ? 0 : colors[bitmapData.readUnsignedByte()]; + Arrays.fill( + argbBitmapData, argbBitmapDataIndex, argbBitmapDataIndex + runLength, color); + argbBitmapDataIndex += runLength; + } + } + } + Bitmap bitmap = + Bitmap.createBitmap(argbBitmapData, bitmapWidth, bitmapHeight, Bitmap.Config.ARGB_8888); + // Build the cue. + return new Cue( + bitmap, + (float) bitmapX / planeWidth, + Cue.ANCHOR_TYPE_START, + (float) bitmapY / planeHeight, + Cue.ANCHOR_TYPE_START, + (float) bitmapWidth / planeWidth, + (float) bitmapHeight / planeHeight); + } + + public void reset() { + planeWidth = 0; + planeHeight = 0; + bitmapX = 0; + bitmapY = 0; + bitmapWidth = 0; + bitmapHeight = 0; + bitmapData.reset(0); + colorsSet = false; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/pgs/PgsSubtitle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/pgs/PgsSubtitle.java new file mode 100644 index 0000000000..e875763a45 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/pgs/PgsSubtitle.java @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.pgs; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import java.util.List; + +/** A representation of a PGS subtitle. */ +/* package */ final class PgsSubtitle implements Subtitle { + + private final List cues; + + public PgsSubtitle(List cues) { + this.cues = cues; + } + + @Override + public int getNextEventTimeIndex(long timeUs) { + return C.INDEX_UNSET; + } + + @Override + public int getEventTimeCount() { + return 1; + } + + @Override + public long getEventTime(int index) { + return 0; + } + + @Override + public List getCues(long timeUs) { + return cues; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/pgs/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/pgs/package-info.java new file mode 100644 index 0000000000..ce385ea085 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/pgs/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.pgs; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaDecoder.java new file mode 100644 index 0000000000..8f878a998e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaDecoder.java @@ -0,0 +1,446 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ssa; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.text.Layout; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SimpleSubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.LinkedHashMap; +import java.util.List; +import java.util.Map; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** A {@link SimpleSubtitleDecoder} for SSA/ASS. */ +public final class SsaDecoder extends SimpleSubtitleDecoder { + + private static final String TAG = "SsaDecoder"; + + private static final Pattern SSA_TIMECODE_PATTERN = + Pattern.compile("(?:(\\d+):)?(\\d+):(\\d+)[:.](\\d+)"); + + /* package */ static final String FORMAT_LINE_PREFIX = "Format:"; + /* package */ static final String STYLE_LINE_PREFIX = "Style:"; + private static final String DIALOGUE_LINE_PREFIX = "Dialogue:"; + + private static final float DEFAULT_MARGIN = 0.05f; + + private final boolean haveInitializationData; + @Nullable private final SsaDialogueFormat dialogueFormatFromInitializationData; + + private @MonotonicNonNull Map styles; + + /** + * The horizontal resolution used by the subtitle author - all cue positions are relative to this. + * + *

Parsed from the {@code PlayResX} value in the {@code [Script Info]} section. + */ + private float screenWidth; + /** + * The vertical resolution used by the subtitle author - all cue positions are relative to this. + * + *

Parsed from the {@code PlayResY} value in the {@code [Script Info]} section. + */ + private float screenHeight; + + public SsaDecoder() { + this(/* initializationData= */ null); + } + + /** + * Constructs an SsaDecoder with optional format and header info. + * + * @param initializationData Optional initialization data for the decoder. If not null or empty, + * the initialization data must consist of two byte arrays. The first must contain an SSA + * format line. The second must contain an SSA header that will be assumed common to all + * samples. The header is everything in an SSA file before the {@code [Events]} section (i.e. + * {@code [Script Info]} and optional {@code [V4+ Styles]} section. + */ + public SsaDecoder(@Nullable List initializationData) { + super("SsaDecoder"); + screenWidth = Cue.DIMEN_UNSET; + screenHeight = Cue.DIMEN_UNSET; + + if (initializationData != null && !initializationData.isEmpty()) { + haveInitializationData = true; + String formatLine = Util.fromUtf8Bytes(initializationData.get(0)); + Assertions.checkArgument(formatLine.startsWith(FORMAT_LINE_PREFIX)); + dialogueFormatFromInitializationData = + Assertions.checkNotNull(SsaDialogueFormat.fromFormatLine(formatLine)); + parseHeader(new ParsableByteArray(initializationData.get(1))); + } else { + haveInitializationData = false; + dialogueFormatFromInitializationData = null; + } + } + + @Override + protected Subtitle decode(byte[] bytes, int length, boolean reset) { + List> cues = new ArrayList<>(); + List cueTimesUs = new ArrayList<>(); + + ParsableByteArray data = new ParsableByteArray(bytes, length); + if (!haveInitializationData) { + parseHeader(data); + } + parseEventBody(data, cues, cueTimesUs); + return new SsaSubtitle(cues, cueTimesUs); + } + + /** + * Parses the header of the subtitle. + * + * @param data A {@link ParsableByteArray} from which the header should be read. + */ + private void parseHeader(ParsableByteArray data) { + @Nullable String currentLine; + while ((currentLine = data.readLine()) != null) { + if ("[Script Info]".equalsIgnoreCase(currentLine)) { + parseScriptInfo(data); + } else if ("[V4+ Styles]".equalsIgnoreCase(currentLine)) { + styles = parseStyles(data); + } else if ("[V4 Styles]".equalsIgnoreCase(currentLine)) { + Log.i(TAG, "[V4 Styles] are not supported"); + } else if ("[Events]".equalsIgnoreCase(currentLine)) { + // We've reached the [Events] section, so the header is over. + return; + } + } + } + + /** + * Parse the {@code [Script Info]} section. + * + *

When this returns, {@code data.position} will be set to the beginning of the first line that + * starts with {@code [} (i.e. the title of the next section). + * + * @param data A {@link ParsableByteArray} with {@link ParsableByteArray#getPosition() position} + * set to the beginning of of the first line after {@code [Script Info]}. + */ + private void parseScriptInfo(ParsableByteArray data) { + @Nullable String currentLine; + while ((currentLine = data.readLine()) != null + && (data.bytesLeft() == 0 || data.peekUnsignedByte() != '[')) { + String[] infoNameAndValue = currentLine.split(":"); + if (infoNameAndValue.length != 2) { + continue; + } + switch (Util.toLowerInvariant(infoNameAndValue[0].trim())) { + case "playresx": + try { + screenWidth = Float.parseFloat(infoNameAndValue[1].trim()); + } catch (NumberFormatException e) { + // Ignore invalid PlayResX value. + } + break; + case "playresy": + try { + screenHeight = Float.parseFloat(infoNameAndValue[1].trim()); + } catch (NumberFormatException e) { + // Ignore invalid PlayResY value. + } + break; + } + } + } + + /** + * Parse the {@code [V4+ Styles]} section. + * + *

When this returns, {@code data.position} will be set to the beginning of the first line that + * starts with {@code [} (i.e. the title of the next section). + * + * @param data A {@link ParsableByteArray} with {@link ParsableByteArray#getPosition()} pointing + * at the beginning of of the first line after {@code [V4+ Styles]}. + */ + private static Map parseStyles(ParsableByteArray data) { + Map styles = new LinkedHashMap<>(); + @Nullable SsaStyle.Format formatInfo = null; + @Nullable String currentLine; + while ((currentLine = data.readLine()) != null + && (data.bytesLeft() == 0 || data.peekUnsignedByte() != '[')) { + if (currentLine.startsWith(FORMAT_LINE_PREFIX)) { + formatInfo = SsaStyle.Format.fromFormatLine(currentLine); + } else if (currentLine.startsWith(STYLE_LINE_PREFIX)) { + if (formatInfo == null) { + Log.w(TAG, "Skipping 'Style:' line before 'Format:' line: " + currentLine); + continue; + } + @Nullable SsaStyle style = SsaStyle.fromStyleLine(currentLine, formatInfo); + if (style != null) { + styles.put(style.name, style); + } + } + } + return styles; + } + + /** + * Parses the event body of the subtitle. + * + * @param data A {@link ParsableByteArray} from which the body should be read. + * @param cues A list to which parsed cues will be added. + * @param cueTimesUs A sorted list to which parsed cue timestamps will be added. + */ + private void parseEventBody(ParsableByteArray data, List> cues, List cueTimesUs) { + @Nullable + SsaDialogueFormat format = haveInitializationData ? dialogueFormatFromInitializationData : null; + @Nullable String currentLine; + while ((currentLine = data.readLine()) != null) { + if (currentLine.startsWith(FORMAT_LINE_PREFIX)) { + format = SsaDialogueFormat.fromFormatLine(currentLine); + } else if (currentLine.startsWith(DIALOGUE_LINE_PREFIX)) { + if (format == null) { + Log.w(TAG, "Skipping dialogue line before complete format: " + currentLine); + continue; + } + parseDialogueLine(currentLine, format, cues, cueTimesUs); + } + } + } + + /** + * Parses a dialogue line. + * + * @param dialogueLine The dialogue values (i.e. everything after {@code Dialogue:}). + * @param format The dialogue format to use when parsing {@code dialogueLine}. + * @param cues A list to which parsed cues will be added. + * @param cueTimesUs A sorted list to which parsed cue timestamps will be added. + */ + private void parseDialogueLine( + String dialogueLine, SsaDialogueFormat format, List> cues, List cueTimesUs) { + Assertions.checkArgument(dialogueLine.startsWith(DIALOGUE_LINE_PREFIX)); + String[] lineValues = + dialogueLine.substring(DIALOGUE_LINE_PREFIX.length()).split(",", format.length); + if (lineValues.length != format.length) { + Log.w(TAG, "Skipping dialogue line with fewer columns than format: " + dialogueLine); + return; + } + + long startTimeUs = parseTimecodeUs(lineValues[format.startTimeIndex]); + if (startTimeUs == C.TIME_UNSET) { + Log.w(TAG, "Skipping invalid timing: " + dialogueLine); + return; + } + + long endTimeUs = parseTimecodeUs(lineValues[format.endTimeIndex]); + if (endTimeUs == C.TIME_UNSET) { + Log.w(TAG, "Skipping invalid timing: " + dialogueLine); + return; + } + + @Nullable + SsaStyle style = + styles != null && format.styleIndex != C.INDEX_UNSET + ? styles.get(lineValues[format.styleIndex].trim()) + : null; + String rawText = lineValues[format.textIndex]; + SsaStyle.Overrides styleOverrides = SsaStyle.Overrides.parseFromDialogue(rawText); + String text = + SsaStyle.Overrides.stripStyleOverrides(rawText) + .replaceAll("\\\\N", "\n") + .replaceAll("\\\\n", "\n"); + Cue cue = createCue(text, style, styleOverrides, screenWidth, screenHeight); + + int startTimeIndex = addCuePlacerholderByTime(startTimeUs, cueTimesUs, cues); + int endTimeIndex = addCuePlacerholderByTime(endTimeUs, cueTimesUs, cues); + // Iterate on cues from startTimeIndex until endTimeIndex, adding the current cue. + for (int i = startTimeIndex; i < endTimeIndex; i++) { + cues.get(i).add(cue); + } + } + + /** + * Parses an SSA timecode string. + * + * @param timeString The string to parse. + * @return The parsed timestamp in microseconds. + */ + private static long parseTimecodeUs(String timeString) { + Matcher matcher = SSA_TIMECODE_PATTERN.matcher(timeString.trim()); + if (!matcher.matches()) { + return C.TIME_UNSET; + } + long timestampUs = + Long.parseLong(castNonNull(matcher.group(1))) * 60 * 60 * C.MICROS_PER_SECOND; + timestampUs += Long.parseLong(castNonNull(matcher.group(2))) * 60 * C.MICROS_PER_SECOND; + timestampUs += Long.parseLong(castNonNull(matcher.group(3))) * C.MICROS_PER_SECOND; + timestampUs += Long.parseLong(castNonNull(matcher.group(4))) * 10000; // 100ths of a second. + return timestampUs; + } + + private static Cue createCue( + String text, + @Nullable SsaStyle style, + SsaStyle.Overrides styleOverrides, + float screenWidth, + float screenHeight) { + @SsaStyle.SsaAlignment int alignment; + if (styleOverrides.alignment != SsaStyle.SSA_ALIGNMENT_UNKNOWN) { + alignment = styleOverrides.alignment; + } else if (style != null) { + alignment = style.alignment; + } else { + alignment = SsaStyle.SSA_ALIGNMENT_UNKNOWN; + } + @Cue.AnchorType int positionAnchor = toPositionAnchor(alignment); + @Cue.AnchorType int lineAnchor = toLineAnchor(alignment); + + float position; + float line; + if (styleOverrides.position != null + && screenHeight != Cue.DIMEN_UNSET + && screenWidth != Cue.DIMEN_UNSET) { + position = styleOverrides.position.x / screenWidth; + line = styleOverrides.position.y / screenHeight; + } else { + // TODO: Read the MarginL, MarginR and MarginV values from the Style & Dialogue lines. + position = computeDefaultLineOrPosition(positionAnchor); + line = computeDefaultLineOrPosition(lineAnchor); + } + + return new Cue( + text, + toTextAlignment(alignment), + line, + Cue.LINE_TYPE_FRACTION, + lineAnchor, + position, + positionAnchor, + /* size= */ Cue.DIMEN_UNSET); + } + + @Nullable + private static Layout.Alignment toTextAlignment(@SsaStyle.SsaAlignment int alignment) { + switch (alignment) { + case SsaStyle.SSA_ALIGNMENT_BOTTOM_LEFT: + case SsaStyle.SSA_ALIGNMENT_MIDDLE_LEFT: + case SsaStyle.SSA_ALIGNMENT_TOP_LEFT: + return Layout.Alignment.ALIGN_NORMAL; + case SsaStyle.SSA_ALIGNMENT_BOTTOM_CENTER: + case SsaStyle.SSA_ALIGNMENT_MIDDLE_CENTER: + case SsaStyle.SSA_ALIGNMENT_TOP_CENTER: + return Layout.Alignment.ALIGN_CENTER; + case SsaStyle.SSA_ALIGNMENT_BOTTOM_RIGHT: + case SsaStyle.SSA_ALIGNMENT_MIDDLE_RIGHT: + case SsaStyle.SSA_ALIGNMENT_TOP_RIGHT: + return Layout.Alignment.ALIGN_OPPOSITE; + case SsaStyle.SSA_ALIGNMENT_UNKNOWN: + return null; + default: + Log.w(TAG, "Unknown alignment: " + alignment); + return null; + } + } + + @Cue.AnchorType + private static int toLineAnchor(@SsaStyle.SsaAlignment int alignment) { + switch (alignment) { + case SsaStyle.SSA_ALIGNMENT_BOTTOM_LEFT: + case SsaStyle.SSA_ALIGNMENT_BOTTOM_CENTER: + case SsaStyle.SSA_ALIGNMENT_BOTTOM_RIGHT: + return Cue.ANCHOR_TYPE_END; + case SsaStyle.SSA_ALIGNMENT_MIDDLE_LEFT: + case SsaStyle.SSA_ALIGNMENT_MIDDLE_CENTER: + case SsaStyle.SSA_ALIGNMENT_MIDDLE_RIGHT: + return Cue.ANCHOR_TYPE_MIDDLE; + case SsaStyle.SSA_ALIGNMENT_TOP_LEFT: + case SsaStyle.SSA_ALIGNMENT_TOP_CENTER: + case SsaStyle.SSA_ALIGNMENT_TOP_RIGHT: + return Cue.ANCHOR_TYPE_START; + case SsaStyle.SSA_ALIGNMENT_UNKNOWN: + return Cue.TYPE_UNSET; + default: + Log.w(TAG, "Unknown alignment: " + alignment); + return Cue.TYPE_UNSET; + } + } + + @Cue.AnchorType + private static int toPositionAnchor(@SsaStyle.SsaAlignment int alignment) { + switch (alignment) { + case SsaStyle.SSA_ALIGNMENT_BOTTOM_LEFT: + case SsaStyle.SSA_ALIGNMENT_MIDDLE_LEFT: + case SsaStyle.SSA_ALIGNMENT_TOP_LEFT: + return Cue.ANCHOR_TYPE_START; + case SsaStyle.SSA_ALIGNMENT_BOTTOM_CENTER: + case SsaStyle.SSA_ALIGNMENT_MIDDLE_CENTER: + case SsaStyle.SSA_ALIGNMENT_TOP_CENTER: + return Cue.ANCHOR_TYPE_MIDDLE; + case SsaStyle.SSA_ALIGNMENT_BOTTOM_RIGHT: + case SsaStyle.SSA_ALIGNMENT_MIDDLE_RIGHT: + case SsaStyle.SSA_ALIGNMENT_TOP_RIGHT: + return Cue.ANCHOR_TYPE_END; + case SsaStyle.SSA_ALIGNMENT_UNKNOWN: + return Cue.TYPE_UNSET; + default: + Log.w(TAG, "Unknown alignment: " + alignment); + return Cue.TYPE_UNSET; + } + } + + private static float computeDefaultLineOrPosition(@Cue.AnchorType int anchor) { + switch (anchor) { + case Cue.ANCHOR_TYPE_START: + return DEFAULT_MARGIN; + case Cue.ANCHOR_TYPE_MIDDLE: + return 0.5f; + case Cue.ANCHOR_TYPE_END: + return 1.0f - DEFAULT_MARGIN; + case Cue.TYPE_UNSET: + default: + return Cue.DIMEN_UNSET; + } + } + + /** + * Searches for {@code timeUs} in {@code sortedCueTimesUs}, inserting it if it's not found, and + * returns the index. + * + *

If it's inserted, we also insert a matching entry to {@code cues}. + */ + private static int addCuePlacerholderByTime( + long timeUs, List sortedCueTimesUs, List> cues) { + int insertionIndex = 0; + for (int i = sortedCueTimesUs.size() - 1; i >= 0; i--) { + if (sortedCueTimesUs.get(i) == timeUs) { + return i; + } + + if (sortedCueTimesUs.get(i) < timeUs) { + insertionIndex = i + 1; + break; + } + } + sortedCueTimesUs.add(insertionIndex, timeUs); + // Copy over cues from left, or use an empty list if we're inserting at the beginning. + cues.add( + insertionIndex, + insertionIndex == 0 ? new ArrayList<>() : new ArrayList<>(cues.get(insertionIndex - 1))); + return insertionIndex; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaDialogueFormat.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaDialogueFormat.java new file mode 100644 index 0000000000..312c779e23 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaDialogueFormat.java @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ssa; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.text.ssa.SsaDecoder.FORMAT_LINE_PREFIX; + +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Represents a {@code Format:} line from the {@code [Events]} section + * + *

The indices are used to determine the location of particular properties in each {@code + * Dialogue:} line. + */ +/* package */ final class SsaDialogueFormat { + + public final int startTimeIndex; + public final int endTimeIndex; + public final int styleIndex; + public final int textIndex; + public final int length; + + private SsaDialogueFormat( + int startTimeIndex, int endTimeIndex, int styleIndex, int textIndex, int length) { + this.startTimeIndex = startTimeIndex; + this.endTimeIndex = endTimeIndex; + this.styleIndex = styleIndex; + this.textIndex = textIndex; + this.length = length; + } + + /** + * Parses the format info from a 'Format:' line in the [Events] section. + * + * @return the parsed info, or null if {@code formatLine} doesn't contain both 'start' and 'end'. + */ + @Nullable + public static SsaDialogueFormat fromFormatLine(String formatLine) { + int startTimeIndex = C.INDEX_UNSET; + int endTimeIndex = C.INDEX_UNSET; + int styleIndex = C.INDEX_UNSET; + int textIndex = C.INDEX_UNSET; + Assertions.checkArgument(formatLine.startsWith(FORMAT_LINE_PREFIX)); + String[] keys = TextUtils.split(formatLine.substring(FORMAT_LINE_PREFIX.length()), ","); + for (int i = 0; i < keys.length; i++) { + switch (Util.toLowerInvariant(keys[i].trim())) { + case "start": + startTimeIndex = i; + break; + case "end": + endTimeIndex = i; + break; + case "style": + styleIndex = i; + break; + case "text": + textIndex = i; + break; + } + } + return (startTimeIndex != C.INDEX_UNSET && endTimeIndex != C.INDEX_UNSET) + ? new SsaDialogueFormat(startTimeIndex, endTimeIndex, styleIndex, textIndex, keys.length) + : null; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaStyle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaStyle.java new file mode 100644 index 0000000000..3c3639a3fb --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaStyle.java @@ -0,0 +1,301 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ssa; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.text.ssa.SsaDecoder.STYLE_LINE_PREFIX; +import static java.lang.annotation.RetentionPolicy.SOURCE; + +import android.graphics.PointF; +import android.text.TextUtils; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** Represents a line from an SSA/ASS {@code [V4+ Styles]} section. */ +/* package */ final class SsaStyle { + + private static final String TAG = "SsaStyle"; + + /** + * The SSA/ASS alignments. + * + *

Allowed values: + * + *

    + *
  • {@link #SSA_ALIGNMENT_UNKNOWN} + *
  • {@link #SSA_ALIGNMENT_BOTTOM_LEFT} + *
  • {@link #SSA_ALIGNMENT_BOTTOM_CENTER} + *
  • {@link #SSA_ALIGNMENT_BOTTOM_RIGHT} + *
  • {@link #SSA_ALIGNMENT_MIDDLE_LEFT} + *
  • {@link #SSA_ALIGNMENT_MIDDLE_CENTER} + *
  • {@link #SSA_ALIGNMENT_MIDDLE_RIGHT} + *
  • {@link #SSA_ALIGNMENT_TOP_LEFT} + *
  • {@link #SSA_ALIGNMENT_TOP_CENTER} + *
  • {@link #SSA_ALIGNMENT_TOP_RIGHT} + *
+ */ + @IntDef({ + SSA_ALIGNMENT_UNKNOWN, + SSA_ALIGNMENT_BOTTOM_LEFT, + SSA_ALIGNMENT_BOTTOM_CENTER, + SSA_ALIGNMENT_BOTTOM_RIGHT, + SSA_ALIGNMENT_MIDDLE_LEFT, + SSA_ALIGNMENT_MIDDLE_CENTER, + SSA_ALIGNMENT_MIDDLE_RIGHT, + SSA_ALIGNMENT_TOP_LEFT, + SSA_ALIGNMENT_TOP_CENTER, + SSA_ALIGNMENT_TOP_RIGHT, + }) + @Documented + @Retention(SOURCE) + public @interface SsaAlignment {} + + // The numbering follows the ASS (v4+) spec (i.e. the points on the number pad). + public static final int SSA_ALIGNMENT_UNKNOWN = -1; + public static final int SSA_ALIGNMENT_BOTTOM_LEFT = 1; + public static final int SSA_ALIGNMENT_BOTTOM_CENTER = 2; + public static final int SSA_ALIGNMENT_BOTTOM_RIGHT = 3; + public static final int SSA_ALIGNMENT_MIDDLE_LEFT = 4; + public static final int SSA_ALIGNMENT_MIDDLE_CENTER = 5; + public static final int SSA_ALIGNMENT_MIDDLE_RIGHT = 6; + public static final int SSA_ALIGNMENT_TOP_LEFT = 7; + public static final int SSA_ALIGNMENT_TOP_CENTER = 8; + public static final int SSA_ALIGNMENT_TOP_RIGHT = 9; + + public final String name; + @SsaAlignment public final int alignment; + + private SsaStyle(String name, @SsaAlignment int alignment) { + this.name = name; + this.alignment = alignment; + } + + @Nullable + public static SsaStyle fromStyleLine(String styleLine, Format format) { + Assertions.checkArgument(styleLine.startsWith(STYLE_LINE_PREFIX)); + String[] styleValues = TextUtils.split(styleLine.substring(STYLE_LINE_PREFIX.length()), ","); + if (styleValues.length != format.length) { + Log.w( + TAG, + Util.formatInvariant( + "Skipping malformed 'Style:' line (expected %s values, found %s): '%s'", + format.length, styleValues.length, styleLine)); + return null; + } + try { + return new SsaStyle( + styleValues[format.nameIndex].trim(), parseAlignment(styleValues[format.alignmentIndex])); + } catch (RuntimeException e) { + Log.w(TAG, "Skipping malformed 'Style:' line: '" + styleLine + "'", e); + return null; + } + } + + @SsaAlignment + private static int parseAlignment(String alignmentStr) { + try { + @SsaAlignment int alignment = Integer.parseInt(alignmentStr.trim()); + if (isValidAlignment(alignment)) { + return alignment; + } + } catch (NumberFormatException e) { + // Swallow the exception and return UNKNOWN below. + } + Log.w(TAG, "Ignoring unknown alignment: " + alignmentStr); + return SSA_ALIGNMENT_UNKNOWN; + } + + private static boolean isValidAlignment(@SsaAlignment int alignment) { + switch (alignment) { + case SSA_ALIGNMENT_BOTTOM_CENTER: + case SSA_ALIGNMENT_BOTTOM_LEFT: + case SSA_ALIGNMENT_BOTTOM_RIGHT: + case SSA_ALIGNMENT_MIDDLE_CENTER: + case SSA_ALIGNMENT_MIDDLE_LEFT: + case SSA_ALIGNMENT_MIDDLE_RIGHT: + case SSA_ALIGNMENT_TOP_CENTER: + case SSA_ALIGNMENT_TOP_LEFT: + case SSA_ALIGNMENT_TOP_RIGHT: + return true; + case SSA_ALIGNMENT_UNKNOWN: + default: + return false; + } + } + + /** + * Represents a {@code Format:} line from the {@code [V4+ Styles]} section + * + *

The indices are used to determine the location of particular properties in each {@code + * Style:} line. + */ + /* package */ static final class Format { + + public final int nameIndex; + public final int alignmentIndex; + public final int length; + + private Format(int nameIndex, int alignmentIndex, int length) { + this.nameIndex = nameIndex; + this.alignmentIndex = alignmentIndex; + this.length = length; + } + + /** + * Parses the format info from a 'Format:' line in the [V4+ Styles] section. + * + * @return the parsed info, or null if {@code styleFormatLine} doesn't contain 'name'. + */ + @Nullable + public static Format fromFormatLine(String styleFormatLine) { + int nameIndex = C.INDEX_UNSET; + int alignmentIndex = C.INDEX_UNSET; + String[] keys = + TextUtils.split(styleFormatLine.substring(SsaDecoder.FORMAT_LINE_PREFIX.length()), ","); + for (int i = 0; i < keys.length; i++) { + switch (Util.toLowerInvariant(keys[i].trim())) { + case "name": + nameIndex = i; + break; + case "alignment": + alignmentIndex = i; + break; + } + } + return nameIndex != C.INDEX_UNSET ? new Format(nameIndex, alignmentIndex, keys.length) : null; + } + } + + /** + * Represents the style override information parsed from an SSA/ASS dialogue line. + * + *

Overrides are contained in braces embedded in the dialogue text of the cue. + */ + /* package */ static final class Overrides { + + private static final String TAG = "SsaStyle.Overrides"; + + /** Matches "{foo}" and returns "foo" in group 1 */ + // Warning that \\} can be replaced with } is bogus [internal: b/144480183]. + private static final Pattern BRACES_PATTERN = Pattern.compile("\\{([^}]*)\\}"); + + private static final String PADDED_DECIMAL_PATTERN = "\\s*\\d+(?:\\.\\d+)?\\s*"; + + /** Matches "\pos(x,y)" and returns "x" in group 1 and "y" in group 2 */ + private static final Pattern POSITION_PATTERN = + Pattern.compile(Util.formatInvariant("\\\\pos\\((%1$s),(%1$s)\\)", PADDED_DECIMAL_PATTERN)); + /** Matches "\move(x1,y1,x2,y2[,t1,t2])" and returns "x2" in group 1 and "y2" in group 2 */ + private static final Pattern MOVE_PATTERN = + Pattern.compile( + Util.formatInvariant( + "\\\\move\\(%1$s,%1$s,(%1$s),(%1$s)(?:,%1$s,%1$s)?\\)", PADDED_DECIMAL_PATTERN)); + + /** Matches "\anx" and returns x in group 1 */ + private static final Pattern ALIGNMENT_OVERRIDE_PATTERN = Pattern.compile("\\\\an(\\d+)"); + + @SsaAlignment public final int alignment; + @Nullable public final PointF position; + + private Overrides(@SsaAlignment int alignment, @Nullable PointF position) { + this.alignment = alignment; + this.position = position; + } + + public static Overrides parseFromDialogue(String text) { + @SsaAlignment int alignment = SSA_ALIGNMENT_UNKNOWN; + PointF position = null; + Matcher matcher = BRACES_PATTERN.matcher(text); + while (matcher.find()) { + String braceContents = matcher.group(1); + try { + PointF parsedPosition = parsePosition(braceContents); + if (parsedPosition != null) { + position = parsedPosition; + } + } catch (RuntimeException e) { + // Ignore invalid \pos() or \move() function. + } + try { + @SsaAlignment int parsedAlignment = parseAlignmentOverride(braceContents); + if (parsedAlignment != SSA_ALIGNMENT_UNKNOWN) { + alignment = parsedAlignment; + } + } catch (RuntimeException e) { + // Ignore invalid \an alignment override. + } + } + return new Overrides(alignment, position); + } + + public static String stripStyleOverrides(String dialogueLine) { + return BRACES_PATTERN.matcher(dialogueLine).replaceAll(""); + } + + /** + * Parses the position from a style override, returns null if no position is found. + * + *

The attribute is expected to be in the form {@code \pos(x,y)} or {@code + * \move(x1,y1,x2,y2,startTime,endTime)} (startTime and endTime are optional). In the case of + * {@code \move()}, this returns {@code (x2, y2)} (i.e. the end position of the move). + * + * @param styleOverride The string to parse. + * @return The parsed position, or null if no position is found. + */ + @Nullable + private static PointF parsePosition(String styleOverride) { + Matcher positionMatcher = POSITION_PATTERN.matcher(styleOverride); + Matcher moveMatcher = MOVE_PATTERN.matcher(styleOverride); + boolean hasPosition = positionMatcher.find(); + boolean hasMove = moveMatcher.find(); + + String x; + String y; + if (hasPosition) { + if (hasMove) { + Log.i( + TAG, + "Override has both \\pos(x,y) and \\move(x1,y1,x2,y2); using \\pos values. override='" + + styleOverride + + "'"); + } + x = positionMatcher.group(1); + y = positionMatcher.group(2); + } else if (hasMove) { + x = moveMatcher.group(1); + y = moveMatcher.group(2); + } else { + return null; + } + return new PointF( + Float.parseFloat(Assertions.checkNotNull(x).trim()), + Float.parseFloat(Assertions.checkNotNull(y).trim())); + } + + @SsaAlignment + private static int parseAlignmentOverride(String braceContents) { + Matcher matcher = ALIGNMENT_OVERRIDE_PATTERN.matcher(braceContents); + return matcher.find() ? parseAlignment(matcher.group(1)) : SSA_ALIGNMENT_UNKNOWN; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaSubtitle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaSubtitle.java new file mode 100644 index 0000000000..fb0544156d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/SsaSubtitle.java @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ssa; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Collections; +import java.util.List; + +/** + * A representation of an SSA/ASS subtitle. + */ +/* package */ final class SsaSubtitle implements Subtitle { + + private final List> cues; + private final List cueTimesUs; + + /** + * @param cues The cues in the subtitle. + * @param cueTimesUs The cue times, in microseconds. + */ + public SsaSubtitle(List> cues, List cueTimesUs) { + this.cues = cues; + this.cueTimesUs = cueTimesUs; + } + + @Override + public int getNextEventTimeIndex(long timeUs) { + int index = Util.binarySearchCeil(cueTimesUs, timeUs, false, false); + return index < cueTimesUs.size() ? index : C.INDEX_UNSET; + } + + @Override + public int getEventTimeCount() { + return cueTimesUs.size(); + } + + @Override + public long getEventTime(int index) { + Assertions.checkArgument(index >= 0); + Assertions.checkArgument(index < cueTimesUs.size()); + return cueTimesUs.get(index); + } + + @Override + public List getCues(long timeUs) { + int index = Util.binarySearchFloor(cueTimesUs, timeUs, true, false); + if (index == -1) { + // timeUs is earlier than the start of the first cue. + return Collections.emptyList(); + } else { + return cues.get(index); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/package-info.java new file mode 100644 index 0000000000..bc4b625d77 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ssa/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ssa; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/subrip/SubripDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/subrip/SubripDecoder.java new file mode 100644 index 0000000000..36ebf6ead0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/subrip/SubripDecoder.java @@ -0,0 +1,259 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.subrip; + +import android.text.Html; +import android.text.Spanned; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SimpleSubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.LongArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.ArrayList; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** + * A {@link SimpleSubtitleDecoder} for SubRip. + */ +public final class SubripDecoder extends SimpleSubtitleDecoder { + + // Fractional positions for use when alignment tags are present. + private static final float START_FRACTION = 0.08f; + private static final float END_FRACTION = 1 - START_FRACTION; + private static final float MID_FRACTION = 0.5f; + + private static final String TAG = "SubripDecoder"; + + // Some SRT files don't include hours or milliseconds in the timecode, so we use optional groups. + private static final String SUBRIP_TIMECODE = "(?:(\\d+):)?(\\d+):(\\d+)(?:,(\\d+))?"; + private static final Pattern SUBRIP_TIMING_LINE = + Pattern.compile("\\s*(" + SUBRIP_TIMECODE + ")\\s*-->\\s*(" + SUBRIP_TIMECODE + ")\\s*"); + + // NOTE: Android Studio's suggestion to simplify '\\}' is incorrect [internal: b/144480183]. + private static final Pattern SUBRIP_TAG_PATTERN = Pattern.compile("\\{\\\\.*?\\}"); + private static final String SUBRIP_ALIGNMENT_TAG = "\\{\\\\an[1-9]\\}"; + + // Alignment tags for SSA V4+. + private static final String ALIGN_BOTTOM_LEFT = "{\\an1}"; + private static final String ALIGN_BOTTOM_MID = "{\\an2}"; + private static final String ALIGN_BOTTOM_RIGHT = "{\\an3}"; + private static final String ALIGN_MID_LEFT = "{\\an4}"; + private static final String ALIGN_MID_MID = "{\\an5}"; + private static final String ALIGN_MID_RIGHT = "{\\an6}"; + private static final String ALIGN_TOP_LEFT = "{\\an7}"; + private static final String ALIGN_TOP_MID = "{\\an8}"; + private static final String ALIGN_TOP_RIGHT = "{\\an9}"; + + private final StringBuilder textBuilder; + private final ArrayList tags; + + public SubripDecoder() { + super("SubripDecoder"); + textBuilder = new StringBuilder(); + tags = new ArrayList<>(); + } + + @Override + protected Subtitle decode(byte[] bytes, int length, boolean reset) { + ArrayList cues = new ArrayList<>(); + LongArray cueTimesUs = new LongArray(); + ParsableByteArray subripData = new ParsableByteArray(bytes, length); + + @Nullable String currentLine; + while ((currentLine = subripData.readLine()) != null) { + if (currentLine.length() == 0) { + // Skip blank lines. + continue; + } + + // Parse the index line as a sanity check. + try { + Integer.parseInt(currentLine); + } catch (NumberFormatException e) { + Log.w(TAG, "Skipping invalid index: " + currentLine); + continue; + } + + // Read and parse the timing line. + currentLine = subripData.readLine(); + if (currentLine == null) { + Log.w(TAG, "Unexpected end"); + break; + } + + Matcher matcher = SUBRIP_TIMING_LINE.matcher(currentLine); + if (matcher.matches()) { + cueTimesUs.add(parseTimecode(matcher, /* groupOffset= */ 1)); + cueTimesUs.add(parseTimecode(matcher, /* groupOffset= */ 6)); + } else { + Log.w(TAG, "Skipping invalid timing: " + currentLine); + continue; + } + + // Read and parse the text and tags. + textBuilder.setLength(0); + tags.clear(); + currentLine = subripData.readLine(); + while (!TextUtils.isEmpty(currentLine)) { + if (textBuilder.length() > 0) { + textBuilder.append("
"); + } + textBuilder.append(processLine(currentLine, tags)); + currentLine = subripData.readLine(); + } + + Spanned text = Html.fromHtml(textBuilder.toString()); + + @Nullable String alignmentTag = null; + for (int i = 0; i < tags.size(); i++) { + String tag = tags.get(i); + if (tag.matches(SUBRIP_ALIGNMENT_TAG)) { + alignmentTag = tag; + // Subsequent alignment tags should be ignored. + break; + } + } + cues.add(buildCue(text, alignmentTag)); + cues.add(Cue.EMPTY); + } + + Cue[] cuesArray = new Cue[cues.size()]; + cues.toArray(cuesArray); + long[] cueTimesUsArray = cueTimesUs.toArray(); + return new SubripSubtitle(cuesArray, cueTimesUsArray); + } + + /** + * Trims and removes tags from the given line. The removed tags are added to {@code tags}. + * + * @param line The line to process. + * @param tags A list to which removed tags will be added. + * @return The processed line. + */ + private String processLine(String line, ArrayList tags) { + line = line.trim(); + + int removedCharacterCount = 0; + StringBuilder processedLine = new StringBuilder(line); + Matcher matcher = SUBRIP_TAG_PATTERN.matcher(line); + while (matcher.find()) { + String tag = matcher.group(); + tags.add(tag); + int start = matcher.start() - removedCharacterCount; + int tagLength = tag.length(); + processedLine.replace(start, /* end= */ start + tagLength, /* str= */ ""); + removedCharacterCount += tagLength; + } + + return processedLine.toString(); + } + + /** + * Build a {@link Cue} based on the given text and alignment tag. + * + * @param text The text. + * @param alignmentTag The alignment tag, or {@code null} if no alignment tag is available. + * @return Built cue + */ + private Cue buildCue(Spanned text, @Nullable String alignmentTag) { + if (alignmentTag == null) { + return new Cue(text); + } + + // Horizontal alignment. + @Cue.AnchorType int positionAnchor; + switch (alignmentTag) { + case ALIGN_BOTTOM_LEFT: + case ALIGN_MID_LEFT: + case ALIGN_TOP_LEFT: + positionAnchor = Cue.ANCHOR_TYPE_START; + break; + case ALIGN_BOTTOM_RIGHT: + case ALIGN_MID_RIGHT: + case ALIGN_TOP_RIGHT: + positionAnchor = Cue.ANCHOR_TYPE_END; + break; + case ALIGN_BOTTOM_MID: + case ALIGN_MID_MID: + case ALIGN_TOP_MID: + default: + positionAnchor = Cue.ANCHOR_TYPE_MIDDLE; + break; + } + + // Vertical alignment. + @Cue.AnchorType int lineAnchor; + switch (alignmentTag) { + case ALIGN_BOTTOM_LEFT: + case ALIGN_BOTTOM_MID: + case ALIGN_BOTTOM_RIGHT: + lineAnchor = Cue.ANCHOR_TYPE_END; + break; + case ALIGN_TOP_LEFT: + case ALIGN_TOP_MID: + case ALIGN_TOP_RIGHT: + lineAnchor = Cue.ANCHOR_TYPE_START; + break; + case ALIGN_MID_LEFT: + case ALIGN_MID_MID: + case ALIGN_MID_RIGHT: + default: + lineAnchor = Cue.ANCHOR_TYPE_MIDDLE; + break; + } + + return new Cue( + text, + /* textAlignment= */ null, + getFractionalPositionForAnchorType(lineAnchor), + Cue.LINE_TYPE_FRACTION, + lineAnchor, + getFractionalPositionForAnchorType(positionAnchor), + positionAnchor, + Cue.DIMEN_UNSET); + } + + private static long parseTimecode(Matcher matcher, int groupOffset) { + @Nullable String hours = matcher.group(groupOffset + 1); + long timestampMs = hours != null ? Long.parseLong(hours) * 60 * 60 * 1000 : 0; + timestampMs += Long.parseLong(matcher.group(groupOffset + 2)) * 60 * 1000; + timestampMs += Long.parseLong(matcher.group(groupOffset + 3)) * 1000; + @Nullable String millis = matcher.group(groupOffset + 4); + if (millis != null) { + timestampMs += Long.parseLong(millis); + } + return timestampMs * 1000; + } + + /* package */ static float getFractionalPositionForAnchorType(@Cue.AnchorType int anchorType) { + switch (anchorType) { + case Cue.ANCHOR_TYPE_START: + return SubripDecoder.START_FRACTION; + case Cue.ANCHOR_TYPE_MIDDLE: + return SubripDecoder.MID_FRACTION; + case Cue.ANCHOR_TYPE_END: + return SubripDecoder.END_FRACTION; + case Cue.TYPE_UNSET: + default: + // Should never happen. + throw new IllegalArgumentException(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/subrip/SubripSubtitle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/subrip/SubripSubtitle.java new file mode 100644 index 0000000000..d011f5d7c5 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/subrip/SubripSubtitle.java @@ -0,0 +1,72 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.subrip; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Collections; +import java.util.List; + +/** + * A representation of a SubRip subtitle. + */ +/* package */ final class SubripSubtitle implements Subtitle { + + private final Cue[] cues; + private final long[] cueTimesUs; + + /** + * @param cues The cues in the subtitle. + * @param cueTimesUs The cue times, in microseconds. + */ + public SubripSubtitle(Cue[] cues, long[] cueTimesUs) { + this.cues = cues; + this.cueTimesUs = cueTimesUs; + } + + @Override + public int getNextEventTimeIndex(long timeUs) { + int index = Util.binarySearchCeil(cueTimesUs, timeUs, false, false); + return index < cueTimesUs.length ? index : C.INDEX_UNSET; + } + + @Override + public int getEventTimeCount() { + return cueTimesUs.length; + } + + @Override + public long getEventTime(int index) { + Assertions.checkArgument(index >= 0); + Assertions.checkArgument(index < cueTimesUs.length); + return cueTimesUs[index]; + } + + @Override + public List getCues(long timeUs) { + int index = Util.binarySearchFloor(cueTimesUs, timeUs, true, false); + if (index == -1 || cues[index] == Cue.EMPTY) { + // timeUs is earlier than the start of the first cue, or we have an empty cue. + return Collections.emptyList(); + } else { + return Collections.singletonList(cues[index]); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/subrip/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/subrip/package-info.java new file mode 100644 index 0000000000..fb990cb748 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/subrip/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.subrip; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlDecoder.java new file mode 100644 index 0000000000..502281c2de --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlDecoder.java @@ -0,0 +1,756 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ttml; + +import android.text.Layout; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SimpleSubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleDecoderException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ColorParser; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.XmlPullParserUtil; +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.util.ArrayDeque; +import java.util.HashMap; +import java.util.Map; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import org.xmlpull.v1.XmlPullParser; +import org.xmlpull.v1.XmlPullParserException; +import org.xmlpull.v1.XmlPullParserFactory; + +/** + * A {@link SimpleSubtitleDecoder} for TTML supporting the DFXP presentation profile. Features + * supported by this decoder are: + * + *

    + *
  • content + *
  • core + *
  • presentation + *
  • profile + *
  • structure + *
  • time-offset + *
  • timing + *
  • tickRate + *
  • time-clock-with-frames + *
  • time-clock + *
  • time-offset-with-frames + *
  • time-offset-with-ticks + *
  • cell-resolution + *
+ * + * @see TTML specification + */ +public final class TtmlDecoder extends SimpleSubtitleDecoder { + + private static final String TAG = "TtmlDecoder"; + + private static final String TTP = "http://www.w3.org/ns/ttml#parameter"; + + private static final String ATTR_BEGIN = "begin"; + private static final String ATTR_DURATION = "dur"; + private static final String ATTR_END = "end"; + private static final String ATTR_STYLE = "style"; + private static final String ATTR_REGION = "region"; + private static final String ATTR_IMAGE = "backgroundImage"; + + private static final Pattern CLOCK_TIME = + Pattern.compile("^([0-9][0-9]+):([0-9][0-9]):([0-9][0-9])" + + "(?:(\\.[0-9]+)|:([0-9][0-9])(?:\\.([0-9]+))?)?$"); + private static final Pattern OFFSET_TIME = + Pattern.compile("^([0-9]+(?:\\.[0-9]+)?)(h|m|s|ms|f|t)$"); + private static final Pattern FONT_SIZE = Pattern.compile("^(([0-9]*.)?[0-9]+)(px|em|%)$"); + private static final Pattern PERCENTAGE_COORDINATES = + Pattern.compile("^(\\d+\\.?\\d*?)% (\\d+\\.?\\d*?)%$"); + private static final Pattern PIXEL_COORDINATES = + Pattern.compile("^(\\d+\\.?\\d*?)px (\\d+\\.?\\d*?)px$"); + private static final Pattern CELL_RESOLUTION = Pattern.compile("^(\\d+) (\\d+)$"); + + private static final int DEFAULT_FRAME_RATE = 30; + + private static final FrameAndTickRate DEFAULT_FRAME_AND_TICK_RATE = + new FrameAndTickRate(DEFAULT_FRAME_RATE, 1, 1); + private static final CellResolution DEFAULT_CELL_RESOLUTION = + new CellResolution(/* columns= */ 32, /* rows= */ 15); + + private final XmlPullParserFactory xmlParserFactory; + + public TtmlDecoder() { + super("TtmlDecoder"); + try { + xmlParserFactory = XmlPullParserFactory.newInstance(); + xmlParserFactory.setNamespaceAware(true); + } catch (XmlPullParserException e) { + throw new RuntimeException("Couldn't create XmlPullParserFactory instance", e); + } + } + + @Override + protected Subtitle decode(byte[] bytes, int length, boolean reset) + throws SubtitleDecoderException { + try { + XmlPullParser xmlParser = xmlParserFactory.newPullParser(); + Map globalStyles = new HashMap<>(); + Map regionMap = new HashMap<>(); + Map imageMap = new HashMap<>(); + regionMap.put(TtmlNode.ANONYMOUS_REGION_ID, new TtmlRegion(null)); + ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes, 0, length); + xmlParser.setInput(inputStream, null); + TtmlSubtitle ttmlSubtitle = null; + ArrayDeque nodeStack = new ArrayDeque<>(); + int unsupportedNodeDepth = 0; + int eventType = xmlParser.getEventType(); + FrameAndTickRate frameAndTickRate = DEFAULT_FRAME_AND_TICK_RATE; + CellResolution cellResolution = DEFAULT_CELL_RESOLUTION; + TtsExtent ttsExtent = null; + while (eventType != XmlPullParser.END_DOCUMENT) { + TtmlNode parent = nodeStack.peek(); + if (unsupportedNodeDepth == 0) { + String name = xmlParser.getName(); + if (eventType == XmlPullParser.START_TAG) { + if (TtmlNode.TAG_TT.equals(name)) { + frameAndTickRate = parseFrameAndTickRates(xmlParser); + cellResolution = parseCellResolution(xmlParser, DEFAULT_CELL_RESOLUTION); + ttsExtent = parseTtsExtent(xmlParser); + } + if (!isSupportedTag(name)) { + Log.i(TAG, "Ignoring unsupported tag: " + xmlParser.getName()); + unsupportedNodeDepth++; + } else if (TtmlNode.TAG_HEAD.equals(name)) { + parseHeader(xmlParser, globalStyles, cellResolution, ttsExtent, regionMap, imageMap); + } else { + try { + TtmlNode node = parseNode(xmlParser, parent, regionMap, frameAndTickRate); + nodeStack.push(node); + if (parent != null) { + parent.addChild(node); + } + } catch (SubtitleDecoderException e) { + Log.w(TAG, "Suppressing parser error", e); + // Treat the node (and by extension, all of its children) as unsupported. + unsupportedNodeDepth++; + } + } + } else if (eventType == XmlPullParser.TEXT) { + parent.addChild(TtmlNode.buildTextNode(xmlParser.getText())); + } else if (eventType == XmlPullParser.END_TAG) { + if (xmlParser.getName().equals(TtmlNode.TAG_TT)) { + ttmlSubtitle = new TtmlSubtitle(nodeStack.peek(), globalStyles, regionMap, imageMap); + } + nodeStack.pop(); + } + } else { + if (eventType == XmlPullParser.START_TAG) { + unsupportedNodeDepth++; + } else if (eventType == XmlPullParser.END_TAG) { + unsupportedNodeDepth--; + } + } + xmlParser.next(); + eventType = xmlParser.getEventType(); + } + return ttmlSubtitle; + } catch (XmlPullParserException xppe) { + throw new SubtitleDecoderException("Unable to decode source", xppe); + } catch (IOException e) { + throw new IllegalStateException("Unexpected error when reading input.", e); + } + } + + private FrameAndTickRate parseFrameAndTickRates(XmlPullParser xmlParser) + throws SubtitleDecoderException { + int frameRate = DEFAULT_FRAME_RATE; + String frameRateString = xmlParser.getAttributeValue(TTP, "frameRate"); + if (frameRateString != null) { + frameRate = Integer.parseInt(frameRateString); + } + + float frameRateMultiplier = 1; + String frameRateMultiplierString = xmlParser.getAttributeValue(TTP, "frameRateMultiplier"); + if (frameRateMultiplierString != null) { + String[] parts = Util.split(frameRateMultiplierString, " "); + if (parts.length != 2) { + throw new SubtitleDecoderException("frameRateMultiplier doesn't have 2 parts"); + } + float numerator = Integer.parseInt(parts[0]); + float denominator = Integer.parseInt(parts[1]); + frameRateMultiplier = numerator / denominator; + } + + int subFrameRate = DEFAULT_FRAME_AND_TICK_RATE.subFrameRate; + String subFrameRateString = xmlParser.getAttributeValue(TTP, "subFrameRate"); + if (subFrameRateString != null) { + subFrameRate = Integer.parseInt(subFrameRateString); + } + + int tickRate = DEFAULT_FRAME_AND_TICK_RATE.tickRate; + String tickRateString = xmlParser.getAttributeValue(TTP, "tickRate"); + if (tickRateString != null) { + tickRate = Integer.parseInt(tickRateString); + } + return new FrameAndTickRate(frameRate * frameRateMultiplier, subFrameRate, tickRate); + } + + private CellResolution parseCellResolution(XmlPullParser xmlParser, CellResolution defaultValue) + throws SubtitleDecoderException { + String cellResolution = xmlParser.getAttributeValue(TTP, "cellResolution"); + if (cellResolution == null) { + return defaultValue; + } + + Matcher cellResolutionMatcher = CELL_RESOLUTION.matcher(cellResolution); + if (!cellResolutionMatcher.matches()) { + Log.w(TAG, "Ignoring malformed cell resolution: " + cellResolution); + return defaultValue; + } + try { + int columns = Integer.parseInt(cellResolutionMatcher.group(1)); + int rows = Integer.parseInt(cellResolutionMatcher.group(2)); + if (columns == 0 || rows == 0) { + throw new SubtitleDecoderException("Invalid cell resolution " + columns + " " + rows); + } + return new CellResolution(columns, rows); + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring malformed cell resolution: " + cellResolution); + return defaultValue; + } + } + + private TtsExtent parseTtsExtent(XmlPullParser xmlParser) { + String ttsExtent = XmlPullParserUtil.getAttributeValue(xmlParser, TtmlNode.ATTR_TTS_EXTENT); + if (ttsExtent == null) { + return null; + } + + Matcher extentMatcher = PIXEL_COORDINATES.matcher(ttsExtent); + if (!extentMatcher.matches()) { + Log.w(TAG, "Ignoring non-pixel tts extent: " + ttsExtent); + return null; + } + try { + int width = Integer.parseInt(extentMatcher.group(1)); + int height = Integer.parseInt(extentMatcher.group(2)); + return new TtsExtent(width, height); + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring malformed tts extent: " + ttsExtent); + return null; + } + } + + private Map parseHeader( + XmlPullParser xmlParser, + Map globalStyles, + CellResolution cellResolution, + TtsExtent ttsExtent, + Map globalRegions, + Map imageMap) + throws IOException, XmlPullParserException { + do { + xmlParser.next(); + if (XmlPullParserUtil.isStartTag(xmlParser, TtmlNode.TAG_STYLE)) { + String parentStyleId = XmlPullParserUtil.getAttributeValue(xmlParser, ATTR_STYLE); + TtmlStyle style = parseStyleAttributes(xmlParser, new TtmlStyle()); + if (parentStyleId != null) { + for (String id : parseStyleIds(parentStyleId)) { + style.chain(globalStyles.get(id)); + } + } + if (style.getId() != null) { + globalStyles.put(style.getId(), style); + } + } else if (XmlPullParserUtil.isStartTag(xmlParser, TtmlNode.TAG_REGION)) { + TtmlRegion ttmlRegion = parseRegionAttributes(xmlParser, cellResolution, ttsExtent); + if (ttmlRegion != null) { + globalRegions.put(ttmlRegion.id, ttmlRegion); + } + } else if (XmlPullParserUtil.isStartTag(xmlParser, TtmlNode.TAG_METADATA)) { + parseMetadata(xmlParser, imageMap); + } + } while (!XmlPullParserUtil.isEndTag(xmlParser, TtmlNode.TAG_HEAD)); + return globalStyles; + } + + private void parseMetadata(XmlPullParser xmlParser, Map imageMap) + throws IOException, XmlPullParserException { + do { + xmlParser.next(); + if (XmlPullParserUtil.isStartTag(xmlParser, TtmlNode.TAG_IMAGE)) { + String id = XmlPullParserUtil.getAttributeValue(xmlParser, "id"); + if (id != null) { + String encodedBitmapData = xmlParser.nextText(); + imageMap.put(id, encodedBitmapData); + } + } + } while (!XmlPullParserUtil.isEndTag(xmlParser, TtmlNode.TAG_METADATA)); + } + + /** + * Parses a region declaration. + * + *

Supports both percentage and pixel defined regions. In case of pixel defined regions the + * passed {@code ttsExtent} is used as a reference window to convert the pixel values to + * fractions. In case of missing tts:extent the pixel defined regions can't be parsed, and null is + * returned. + */ + private TtmlRegion parseRegionAttributes( + XmlPullParser xmlParser, CellResolution cellResolution, TtsExtent ttsExtent) { + String regionId = XmlPullParserUtil.getAttributeValue(xmlParser, TtmlNode.ATTR_ID); + if (regionId == null) { + return null; + } + + float position; + float line; + + String regionOrigin = XmlPullParserUtil.getAttributeValue(xmlParser, TtmlNode.ATTR_TTS_ORIGIN); + if (regionOrigin != null) { + Matcher originPercentageMatcher = PERCENTAGE_COORDINATES.matcher(regionOrigin); + Matcher originPixelMatcher = PIXEL_COORDINATES.matcher(regionOrigin); + if (originPercentageMatcher.matches()) { + try { + position = Float.parseFloat(originPercentageMatcher.group(1)) / 100f; + line = Float.parseFloat(originPercentageMatcher.group(2)) / 100f; + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring region with malformed origin: " + regionOrigin); + return null; + } + } else if (originPixelMatcher.matches()) { + if (ttsExtent == null) { + Log.w(TAG, "Ignoring region with missing tts:extent: " + regionOrigin); + return null; + } + try { + int width = Integer.parseInt(originPixelMatcher.group(1)); + int height = Integer.parseInt(originPixelMatcher.group(2)); + // Convert pixel values to fractions. + position = width / (float) ttsExtent.width; + line = height / (float) ttsExtent.height; + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring region with malformed origin: " + regionOrigin); + return null; + } + } else { + Log.w(TAG, "Ignoring region with unsupported origin: " + regionOrigin); + return null; + } + } else { + Log.w(TAG, "Ignoring region without an origin"); + return null; + // TODO: Should default to top left as below in this case, but need to fix + // https://github.com/google/ExoPlayer/issues/2953 first. + // Origin is omitted. Default to top left. + // position = 0; + // line = 0; + } + + float width; + float height; + String regionExtent = XmlPullParserUtil.getAttributeValue(xmlParser, TtmlNode.ATTR_TTS_EXTENT); + if (regionExtent != null) { + Matcher extentPercentageMatcher = PERCENTAGE_COORDINATES.matcher(regionExtent); + Matcher extentPixelMatcher = PIXEL_COORDINATES.matcher(regionExtent); + if (extentPercentageMatcher.matches()) { + try { + width = Float.parseFloat(extentPercentageMatcher.group(1)) / 100f; + height = Float.parseFloat(extentPercentageMatcher.group(2)) / 100f; + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring region with malformed extent: " + regionOrigin); + return null; + } + } else if (extentPixelMatcher.matches()) { + if (ttsExtent == null) { + Log.w(TAG, "Ignoring region with missing tts:extent: " + regionOrigin); + return null; + } + try { + int extentWidth = Integer.parseInt(extentPixelMatcher.group(1)); + int extentHeight = Integer.parseInt(extentPixelMatcher.group(2)); + // Convert pixel values to fractions. + width = extentWidth / (float) ttsExtent.width; + height = extentHeight / (float) ttsExtent.height; + } catch (NumberFormatException e) { + Log.w(TAG, "Ignoring region with malformed extent: " + regionOrigin); + return null; + } + } else { + Log.w(TAG, "Ignoring region with unsupported extent: " + regionOrigin); + return null; + } + } else { + Log.w(TAG, "Ignoring region without an extent"); + return null; + // TODO: Should default to extent of parent as below in this case, but need to fix + // https://github.com/google/ExoPlayer/issues/2953 first. + // Extent is omitted. Default to extent of parent. + // width = 1; + // height = 1; + } + + @Cue.AnchorType int lineAnchor = Cue.ANCHOR_TYPE_START; + String displayAlign = XmlPullParserUtil.getAttributeValue(xmlParser, + TtmlNode.ATTR_TTS_DISPLAY_ALIGN); + if (displayAlign != null) { + switch (Util.toLowerInvariant(displayAlign)) { + case "center": + lineAnchor = Cue.ANCHOR_TYPE_MIDDLE; + line += height / 2; + break; + case "after": + lineAnchor = Cue.ANCHOR_TYPE_END; + line += height; + break; + default: + // Default "before" case. Do nothing. + break; + } + } + + float regionTextHeight = 1.0f / cellResolution.rows; + return new TtmlRegion( + regionId, + position, + line, + /* lineType= */ Cue.LINE_TYPE_FRACTION, + lineAnchor, + width, + height, + /* textSizeType= */ Cue.TEXT_SIZE_TYPE_FRACTIONAL_IGNORE_PADDING, + /* textSize= */ regionTextHeight); + } + + private String[] parseStyleIds(String parentStyleIds) { + parentStyleIds = parentStyleIds.trim(); + return parentStyleIds.isEmpty() ? new String[0] : Util.split(parentStyleIds, "\\s+"); + } + + private TtmlStyle parseStyleAttributes(XmlPullParser parser, TtmlStyle style) { + int attributeCount = parser.getAttributeCount(); + for (int i = 0; i < attributeCount; i++) { + String attributeValue = parser.getAttributeValue(i); + switch (parser.getAttributeName(i)) { + case TtmlNode.ATTR_ID: + if (TtmlNode.TAG_STYLE.equals(parser.getName())) { + style = createIfNull(style).setId(attributeValue); + } + break; + case TtmlNode.ATTR_TTS_BACKGROUND_COLOR: + style = createIfNull(style); + try { + style.setBackgroundColor(ColorParser.parseTtmlColor(attributeValue)); + } catch (IllegalArgumentException e) { + Log.w(TAG, "Failed parsing background value: " + attributeValue); + } + break; + case TtmlNode.ATTR_TTS_COLOR: + style = createIfNull(style); + try { + style.setFontColor(ColorParser.parseTtmlColor(attributeValue)); + } catch (IllegalArgumentException e) { + Log.w(TAG, "Failed parsing color value: " + attributeValue); + } + break; + case TtmlNode.ATTR_TTS_FONT_FAMILY: + style = createIfNull(style).setFontFamily(attributeValue); + break; + case TtmlNode.ATTR_TTS_FONT_SIZE: + try { + style = createIfNull(style); + parseFontSize(attributeValue, style); + } catch (SubtitleDecoderException e) { + Log.w(TAG, "Failed parsing fontSize value: " + attributeValue); + } + break; + case TtmlNode.ATTR_TTS_FONT_WEIGHT: + style = createIfNull(style).setBold( + TtmlNode.BOLD.equalsIgnoreCase(attributeValue)); + break; + case TtmlNode.ATTR_TTS_FONT_STYLE: + style = createIfNull(style).setItalic( + TtmlNode.ITALIC.equalsIgnoreCase(attributeValue)); + break; + case TtmlNode.ATTR_TTS_TEXT_ALIGN: + switch (Util.toLowerInvariant(attributeValue)) { + case TtmlNode.LEFT: + style = createIfNull(style).setTextAlign(Layout.Alignment.ALIGN_NORMAL); + break; + case TtmlNode.START: + style = createIfNull(style).setTextAlign(Layout.Alignment.ALIGN_NORMAL); + break; + case TtmlNode.RIGHT: + style = createIfNull(style).setTextAlign(Layout.Alignment.ALIGN_OPPOSITE); + break; + case TtmlNode.END: + style = createIfNull(style).setTextAlign(Layout.Alignment.ALIGN_OPPOSITE); + break; + case TtmlNode.CENTER: + style = createIfNull(style).setTextAlign(Layout.Alignment.ALIGN_CENTER); + break; + } + break; + case TtmlNode.ATTR_TTS_TEXT_DECORATION: + switch (Util.toLowerInvariant(attributeValue)) { + case TtmlNode.LINETHROUGH: + style = createIfNull(style).setLinethrough(true); + break; + case TtmlNode.NO_LINETHROUGH: + style = createIfNull(style).setLinethrough(false); + break; + case TtmlNode.UNDERLINE: + style = createIfNull(style).setUnderline(true); + break; + case TtmlNode.NO_UNDERLINE: + style = createIfNull(style).setUnderline(false); + break; + } + break; + default: + // ignore + break; + } + } + return style; + } + + private TtmlStyle createIfNull(TtmlStyle style) { + return style == null ? new TtmlStyle() : style; + } + + private TtmlNode parseNode(XmlPullParser parser, TtmlNode parent, + Map regionMap, FrameAndTickRate frameAndTickRate) + throws SubtitleDecoderException { + long duration = C.TIME_UNSET; + long startTime = C.TIME_UNSET; + long endTime = C.TIME_UNSET; + String regionId = TtmlNode.ANONYMOUS_REGION_ID; + String imageId = null; + String[] styleIds = null; + int attributeCount = parser.getAttributeCount(); + TtmlStyle style = parseStyleAttributes(parser, null); + for (int i = 0; i < attributeCount; i++) { + String attr = parser.getAttributeName(i); + String value = parser.getAttributeValue(i); + switch (attr) { + case ATTR_BEGIN: + startTime = parseTimeExpression(value, frameAndTickRate); + break; + case ATTR_END: + endTime = parseTimeExpression(value, frameAndTickRate); + break; + case ATTR_DURATION: + duration = parseTimeExpression(value, frameAndTickRate); + break; + case ATTR_STYLE: + // IDREFS: potentially multiple space delimited ids + String[] ids = parseStyleIds(value); + if (ids.length > 0) { + styleIds = ids; + } + break; + case ATTR_REGION: + if (regionMap.containsKey(value)) { + // If the region has not been correctly declared or does not define a position, we use + // the anonymous region. + regionId = value; + } + break; + case ATTR_IMAGE: + // Parse URI reference only if refers to an element in the same document (it must start + // with '#'). Resolving URIs from external sources is not supported. + if (value.startsWith("#")) { + imageId = value.substring(1); + } + break; + default: + // Do nothing. + break; + } + } + if (parent != null && parent.startTimeUs != C.TIME_UNSET) { + if (startTime != C.TIME_UNSET) { + startTime += parent.startTimeUs; + } + if (endTime != C.TIME_UNSET) { + endTime += parent.startTimeUs; + } + } + if (endTime == C.TIME_UNSET) { + if (duration != C.TIME_UNSET) { + // Infer the end time from the duration. + endTime = startTime + duration; + } else if (parent != null && parent.endTimeUs != C.TIME_UNSET) { + // If the end time remains unspecified, then it should be inherited from the parent. + endTime = parent.endTimeUs; + } + } + return TtmlNode.buildNode( + parser.getName(), startTime, endTime, style, styleIds, regionId, imageId); + } + + private static boolean isSupportedTag(String tag) { + return tag.equals(TtmlNode.TAG_TT) + || tag.equals(TtmlNode.TAG_HEAD) + || tag.equals(TtmlNode.TAG_BODY) + || tag.equals(TtmlNode.TAG_DIV) + || tag.equals(TtmlNode.TAG_P) + || tag.equals(TtmlNode.TAG_SPAN) + || tag.equals(TtmlNode.TAG_BR) + || tag.equals(TtmlNode.TAG_STYLE) + || tag.equals(TtmlNode.TAG_STYLING) + || tag.equals(TtmlNode.TAG_LAYOUT) + || tag.equals(TtmlNode.TAG_REGION) + || tag.equals(TtmlNode.TAG_METADATA) + || tag.equals(TtmlNode.TAG_IMAGE) + || tag.equals(TtmlNode.TAG_DATA) + || tag.equals(TtmlNode.TAG_INFORMATION); + } + + private static void parseFontSize(String expression, TtmlStyle out) throws + SubtitleDecoderException { + String[] expressions = Util.split(expression, "\\s+"); + Matcher matcher; + if (expressions.length == 1) { + matcher = FONT_SIZE.matcher(expression); + } else if (expressions.length == 2){ + matcher = FONT_SIZE.matcher(expressions[1]); + Log.w(TAG, "Multiple values in fontSize attribute. Picking the second value for vertical font" + + " size and ignoring the first."); + } else { + throw new SubtitleDecoderException("Invalid number of entries for fontSize: " + + expressions.length + "."); + } + + if (matcher.matches()) { + String unit = matcher.group(3); + switch (unit) { + case "px": + out.setFontSizeUnit(TtmlStyle.FONT_SIZE_UNIT_PIXEL); + break; + case "em": + out.setFontSizeUnit(TtmlStyle.FONT_SIZE_UNIT_EM); + break; + case "%": + out.setFontSizeUnit(TtmlStyle.FONT_SIZE_UNIT_PERCENT); + break; + default: + throw new SubtitleDecoderException("Invalid unit for fontSize: '" + unit + "'."); + } + out.setFontSize(Float.valueOf(matcher.group(1))); + } else { + throw new SubtitleDecoderException("Invalid expression for fontSize: '" + expression + "'."); + } + } + + /** + * Parses a time expression, returning the parsed timestamp. + *

+ * For the format of a time expression, see: + * timeExpression + * + * @param time A string that includes the time expression. + * @param frameAndTickRate The effective frame and tick rates of the stream. + * @return The parsed timestamp in microseconds. + * @throws SubtitleDecoderException If the given string does not contain a valid time expression. + */ + private static long parseTimeExpression(String time, FrameAndTickRate frameAndTickRate) + throws SubtitleDecoderException { + Matcher matcher = CLOCK_TIME.matcher(time); + if (matcher.matches()) { + String hours = matcher.group(1); + double durationSeconds = Long.parseLong(hours) * 3600; + String minutes = matcher.group(2); + durationSeconds += Long.parseLong(minutes) * 60; + String seconds = matcher.group(3); + durationSeconds += Long.parseLong(seconds); + String fraction = matcher.group(4); + durationSeconds += (fraction != null) ? Double.parseDouble(fraction) : 0; + String frames = matcher.group(5); + durationSeconds += (frames != null) + ? Long.parseLong(frames) / frameAndTickRate.effectiveFrameRate : 0; + String subframes = matcher.group(6); + durationSeconds += (subframes != null) + ? ((double) Long.parseLong(subframes)) / frameAndTickRate.subFrameRate + / frameAndTickRate.effectiveFrameRate + : 0; + return (long) (durationSeconds * C.MICROS_PER_SECOND); + } + matcher = OFFSET_TIME.matcher(time); + if (matcher.matches()) { + String timeValue = matcher.group(1); + double offsetSeconds = Double.parseDouble(timeValue); + String unit = matcher.group(2); + switch (unit) { + case "h": + offsetSeconds *= 3600; + break; + case "m": + offsetSeconds *= 60; + break; + case "s": + // Do nothing. + break; + case "ms": + offsetSeconds /= 1000; + break; + case "f": + offsetSeconds /= frameAndTickRate.effectiveFrameRate; + break; + case "t": + offsetSeconds /= frameAndTickRate.tickRate; + break; + } + return (long) (offsetSeconds * C.MICROS_PER_SECOND); + } + throw new SubtitleDecoderException("Malformed time expression: " + time); + } + + private static final class FrameAndTickRate { + final float effectiveFrameRate; + final int subFrameRate; + final int tickRate; + + FrameAndTickRate(float effectiveFrameRate, int subFrameRate, int tickRate) { + this.effectiveFrameRate = effectiveFrameRate; + this.subFrameRate = subFrameRate; + this.tickRate = tickRate; + } + } + + /** Represents the cell resolution for a TTML file. */ + private static final class CellResolution { + final int columns; + final int rows; + + CellResolution(int columns, int rows) { + this.columns = columns; + this.rows = rows; + } + } + + /** Represents the tts:extent for a TTML file. */ + private static final class TtsExtent { + final int width; + final int height; + + TtsExtent(int width, int height) { + this.width = width; + this.height = height; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlNode.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlNode.java new file mode 100644 index 0000000000..16d0f28f6b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlNode.java @@ -0,0 +1,399 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ttml; + +import android.graphics.Bitmap; +import android.graphics.BitmapFactory; +import android.text.SpannableStringBuilder; +import android.util.Base64; +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Map.Entry; +import java.util.TreeMap; +import java.util.TreeSet; + +/** + * A package internal representation of TTML node. + */ +/* package */ final class TtmlNode { + + public static final String TAG_TT = "tt"; + public static final String TAG_HEAD = "head"; + public static final String TAG_BODY = "body"; + public static final String TAG_DIV = "div"; + public static final String TAG_P = "p"; + public static final String TAG_SPAN = "span"; + public static final String TAG_BR = "br"; + public static final String TAG_STYLE = "style"; + public static final String TAG_STYLING = "styling"; + public static final String TAG_LAYOUT = "layout"; + public static final String TAG_REGION = "region"; + public static final String TAG_METADATA = "metadata"; + public static final String TAG_IMAGE = "image"; + public static final String TAG_DATA = "data"; + public static final String TAG_INFORMATION = "information"; + + public static final String ANONYMOUS_REGION_ID = ""; + public static final String ATTR_ID = "id"; + public static final String ATTR_TTS_ORIGIN = "origin"; + public static final String ATTR_TTS_EXTENT = "extent"; + public static final String ATTR_TTS_DISPLAY_ALIGN = "displayAlign"; + public static final String ATTR_TTS_BACKGROUND_COLOR = "backgroundColor"; + public static final String ATTR_TTS_FONT_STYLE = "fontStyle"; + public static final String ATTR_TTS_FONT_SIZE = "fontSize"; + public static final String ATTR_TTS_FONT_FAMILY = "fontFamily"; + public static final String ATTR_TTS_FONT_WEIGHT = "fontWeight"; + public static final String ATTR_TTS_COLOR = "color"; + public static final String ATTR_TTS_TEXT_DECORATION = "textDecoration"; + public static final String ATTR_TTS_TEXT_ALIGN = "textAlign"; + + public static final String LINETHROUGH = "linethrough"; + public static final String NO_LINETHROUGH = "nolinethrough"; + public static final String UNDERLINE = "underline"; + public static final String NO_UNDERLINE = "nounderline"; + public static final String ITALIC = "italic"; + public static final String BOLD = "bold"; + + public static final String LEFT = "left"; + public static final String CENTER = "center"; + public static final String RIGHT = "right"; + public static final String START = "start"; + public static final String END = "end"; + + @Nullable public final String tag; + @Nullable public final String text; + public final boolean isTextNode; + public final long startTimeUs; + public final long endTimeUs; + @Nullable public final TtmlStyle style; + @Nullable private final String[] styleIds; + public final String regionId; + @Nullable public final String imageId; + + private final HashMap nodeStartsByRegion; + private final HashMap nodeEndsByRegion; + + private List children; + + public static TtmlNode buildTextNode(String text) { + return new TtmlNode( + /* tag= */ null, + TtmlRenderUtil.applyTextElementSpacePolicy(text), + /* startTimeUs= */ C.TIME_UNSET, + /* endTimeUs= */ C.TIME_UNSET, + /* style= */ null, + /* styleIds= */ null, + ANONYMOUS_REGION_ID, + /* imageId= */ null); + } + + public static TtmlNode buildNode( + @Nullable String tag, + long startTimeUs, + long endTimeUs, + @Nullable TtmlStyle style, + @Nullable String[] styleIds, + String regionId, + @Nullable String imageId) { + return new TtmlNode( + tag, /* text= */ null, startTimeUs, endTimeUs, style, styleIds, regionId, imageId); + } + + private TtmlNode( + @Nullable String tag, + @Nullable String text, + long startTimeUs, + long endTimeUs, + @Nullable TtmlStyle style, + @Nullable String[] styleIds, + String regionId, + @Nullable String imageId) { + this.tag = tag; + this.text = text; + this.imageId = imageId; + this.style = style; + this.styleIds = styleIds; + this.isTextNode = text != null; + this.startTimeUs = startTimeUs; + this.endTimeUs = endTimeUs; + this.regionId = Assertions.checkNotNull(regionId); + nodeStartsByRegion = new HashMap<>(); + nodeEndsByRegion = new HashMap<>(); + } + + public boolean isActive(long timeUs) { + return (startTimeUs == C.TIME_UNSET && endTimeUs == C.TIME_UNSET) + || (startTimeUs <= timeUs && endTimeUs == C.TIME_UNSET) + || (startTimeUs == C.TIME_UNSET && timeUs < endTimeUs) + || (startTimeUs <= timeUs && timeUs < endTimeUs); + } + + public void addChild(TtmlNode child) { + if (children == null) { + children = new ArrayList<>(); + } + children.add(child); + } + + public TtmlNode getChild(int index) { + if (children == null) { + throw new IndexOutOfBoundsException(); + } + return children.get(index); + } + + public int getChildCount() { + return children == null ? 0 : children.size(); + } + + public long[] getEventTimesUs() { + TreeSet eventTimeSet = new TreeSet<>(); + getEventTimes(eventTimeSet, false); + long[] eventTimes = new long[eventTimeSet.size()]; + int i = 0; + for (long eventTimeUs : eventTimeSet) { + eventTimes[i++] = eventTimeUs; + } + return eventTimes; + } + + private void getEventTimes(TreeSet out, boolean descendsPNode) { + boolean isPNode = TAG_P.equals(tag); + boolean isDivNode = TAG_DIV.equals(tag); + if (descendsPNode || isPNode || (isDivNode && imageId != null)) { + if (startTimeUs != C.TIME_UNSET) { + out.add(startTimeUs); + } + if (endTimeUs != C.TIME_UNSET) { + out.add(endTimeUs); + } + } + if (children == null) { + return; + } + for (int i = 0; i < children.size(); i++) { + children.get(i).getEventTimes(out, descendsPNode || isPNode); + } + } + + public String[] getStyleIds() { + return styleIds; + } + + public List getCues( + long timeUs, + Map globalStyles, + Map regionMap, + Map imageMap) { + + List> regionImageOutputs = new ArrayList<>(); + traverseForImage(timeUs, regionId, regionImageOutputs); + + TreeMap regionTextOutputs = new TreeMap<>(); + traverseForText(timeUs, false, regionId, regionTextOutputs); + traverseForStyle(timeUs, globalStyles, regionTextOutputs); + + List cues = new ArrayList<>(); + + // Create image based cues. + for (Pair regionImagePair : regionImageOutputs) { + String encodedBitmapData = imageMap.get(regionImagePair.second); + if (encodedBitmapData == null) { + // Image reference points to an invalid image. Do nothing. + continue; + } + + byte[] bitmapData = Base64.decode(encodedBitmapData, Base64.DEFAULT); + Bitmap bitmap = BitmapFactory.decodeByteArray(bitmapData, /* offset= */ 0, bitmapData.length); + TtmlRegion region = regionMap.get(regionImagePair.first); + + cues.add( + new Cue( + bitmap, + region.position, + Cue.ANCHOR_TYPE_START, + region.line, + region.lineAnchor, + region.width, + region.height)); + } + + // Create text based cues. + for (Entry entry : regionTextOutputs.entrySet()) { + TtmlRegion region = regionMap.get(entry.getKey()); + cues.add( + new Cue( + cleanUpText(entry.getValue()), + /* textAlignment= */ null, + region.line, + region.lineType, + region.lineAnchor, + region.position, + /* positionAnchor= */ Cue.TYPE_UNSET, + region.width, + region.textSizeType, + region.textSize)); + } + + return cues; + } + + private void traverseForImage( + long timeUs, String inheritedRegion, List> regionImageList) { + String resolvedRegionId = ANONYMOUS_REGION_ID.equals(regionId) ? inheritedRegion : regionId; + if (isActive(timeUs) && TAG_DIV.equals(tag) && imageId != null) { + regionImageList.add(new Pair<>(resolvedRegionId, imageId)); + return; + } + for (int i = 0; i < getChildCount(); ++i) { + getChild(i).traverseForImage(timeUs, resolvedRegionId, regionImageList); + } + } + + private void traverseForText( + long timeUs, + boolean descendsPNode, + String inheritedRegion, + Map regionOutputs) { + nodeStartsByRegion.clear(); + nodeEndsByRegion.clear(); + if (TAG_METADATA.equals(tag)) { + // Ignore metadata tag. + return; + } + + String resolvedRegionId = ANONYMOUS_REGION_ID.equals(regionId) ? inheritedRegion : regionId; + + if (isTextNode && descendsPNode) { + getRegionOutput(resolvedRegionId, regionOutputs).append(text); + } else if (TAG_BR.equals(tag) && descendsPNode) { + getRegionOutput(resolvedRegionId, regionOutputs).append('\n'); + } else if (isActive(timeUs)) { + // This is a container node, which can contain zero or more children. + for (Entry entry : regionOutputs.entrySet()) { + nodeStartsByRegion.put(entry.getKey(), entry.getValue().length()); + } + + boolean isPNode = TAG_P.equals(tag); + for (int i = 0; i < getChildCount(); i++) { + getChild(i).traverseForText(timeUs, descendsPNode || isPNode, resolvedRegionId, + regionOutputs); + } + if (isPNode) { + TtmlRenderUtil.endParagraph(getRegionOutput(resolvedRegionId, regionOutputs)); + } + + for (Entry entry : regionOutputs.entrySet()) { + nodeEndsByRegion.put(entry.getKey(), entry.getValue().length()); + } + } + } + + private static SpannableStringBuilder getRegionOutput( + String resolvedRegionId, Map regionOutputs) { + if (!regionOutputs.containsKey(resolvedRegionId)) { + regionOutputs.put(resolvedRegionId, new SpannableStringBuilder()); + } + return regionOutputs.get(resolvedRegionId); + } + + private void traverseForStyle( + long timeUs, + Map globalStyles, + Map regionOutputs) { + if (!isActive(timeUs)) { + return; + } + for (Entry entry : nodeEndsByRegion.entrySet()) { + String regionId = entry.getKey(); + int start = nodeStartsByRegion.containsKey(regionId) ? nodeStartsByRegion.get(regionId) : 0; + int end = entry.getValue(); + if (start != end) { + SpannableStringBuilder regionOutput = regionOutputs.get(regionId); + applyStyleToOutput(globalStyles, regionOutput, start, end); + } + } + for (int i = 0; i < getChildCount(); ++i) { + getChild(i).traverseForStyle(timeUs, globalStyles, regionOutputs); + } + } + + private void applyStyleToOutput( + Map globalStyles, + SpannableStringBuilder regionOutput, + int start, + int end) { + TtmlStyle resolvedStyle = TtmlRenderUtil.resolveStyle(style, styleIds, globalStyles); + if (resolvedStyle != null) { + TtmlRenderUtil.applyStylesToSpan(regionOutput, start, end, resolvedStyle); + } + } + + private SpannableStringBuilder cleanUpText(SpannableStringBuilder builder) { + // Having joined the text elements, we need to do some final cleanup on the result. + // 1. Collapse multiple consecutive spaces into a single space. + int builderLength = builder.length(); + for (int i = 0; i < builderLength; i++) { + if (builder.charAt(i) == ' ') { + int j = i + 1; + while (j < builder.length() && builder.charAt(j) == ' ') { + j++; + } + int spacesToDelete = j - (i + 1); + if (spacesToDelete > 0) { + builder.delete(i, i + spacesToDelete); + builderLength -= spacesToDelete; + } + } + } + // 2. Remove any spaces from the start of each line. + if (builderLength > 0 && builder.charAt(0) == ' ') { + builder.delete(0, 1); + builderLength--; + } + for (int i = 0; i < builderLength - 1; i++) { + if (builder.charAt(i) == '\n' && builder.charAt(i + 1) == ' ') { + builder.delete(i + 1, i + 2); + builderLength--; + } + } + // 3. Remove any spaces from the end of each line. + if (builderLength > 0 && builder.charAt(builderLength - 1) == ' ') { + builder.delete(builderLength - 1, builderLength); + builderLength--; + } + for (int i = 0; i < builderLength - 1; i++) { + if (builder.charAt(i) == ' ' && builder.charAt(i + 1) == '\n') { + builder.delete(i, i + 1); + builderLength--; + } + } + // 4. Trim a trailing newline, if there is one. + if (builderLength > 0 && builder.charAt(builderLength - 1) == '\n') { + builder.delete(builderLength - 1, builderLength); + /*builderLength--;*/ + } + return builder; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlRegion.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlRegion.java new file mode 100644 index 0000000000..d14e547d49 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlRegion.java @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ttml; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; + +/** + * Represents a TTML Region. + */ +/* package */ final class TtmlRegion { + + public final String id; + public final float position; + public final float line; + public final @Cue.LineType int lineType; + public final @Cue.AnchorType int lineAnchor; + public final float width; + public final float height; + public final @Cue.TextSizeType int textSizeType; + public final float textSize; + + public TtmlRegion(String id) { + this( + id, + /* position= */ Cue.DIMEN_UNSET, + /* line= */ Cue.DIMEN_UNSET, + /* lineType= */ Cue.TYPE_UNSET, + /* lineAnchor= */ Cue.TYPE_UNSET, + /* width= */ Cue.DIMEN_UNSET, + /* height= */ Cue.DIMEN_UNSET, + /* textSizeType= */ Cue.TYPE_UNSET, + /* textSize= */ Cue.DIMEN_UNSET); + } + + public TtmlRegion( + String id, + float position, + float line, + @Cue.LineType int lineType, + @Cue.AnchorType int lineAnchor, + float width, + float height, + int textSizeType, + float textSize) { + this.id = id; + this.position = position; + this.line = line; + this.lineType = lineType; + this.lineAnchor = lineAnchor; + this.width = width; + this.height = height; + this.textSizeType = textSizeType; + this.textSize = textSize; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlRenderUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlRenderUtil.java new file mode 100644 index 0000000000..f2387b6282 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlRenderUtil.java @@ -0,0 +1,151 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ttml; + +import android.text.Spannable; +import android.text.SpannableStringBuilder; +import android.text.Spanned; +import android.text.style.AbsoluteSizeSpan; +import android.text.style.AlignmentSpan; +import android.text.style.BackgroundColorSpan; +import android.text.style.ForegroundColorSpan; +import android.text.style.RelativeSizeSpan; +import android.text.style.StrikethroughSpan; +import android.text.style.StyleSpan; +import android.text.style.TypefaceSpan; +import android.text.style.UnderlineSpan; +import java.util.Map; + +/** + * Package internal utility class to render styled TtmlNodes. + */ +/* package */ final class TtmlRenderUtil { + + public static TtmlStyle resolveStyle(TtmlStyle style, String[] styleIds, + Map globalStyles) { + if (style == null && styleIds == null) { + // No styles at all. + return null; + } else if (style == null && styleIds.length == 1) { + // Only one single referential style present. + return globalStyles.get(styleIds[0]); + } else if (style == null && styleIds.length > 1) { + // Only multiple referential styles present. + TtmlStyle chainedStyle = new TtmlStyle(); + for (String id : styleIds) { + chainedStyle.chain(globalStyles.get(id)); + } + return chainedStyle; + } else if (style != null && styleIds != null && styleIds.length == 1) { + // Merge a single referential style into inline style. + return style.chain(globalStyles.get(styleIds[0])); + } else if (style != null && styleIds != null && styleIds.length > 1) { + // Merge multiple referential styles into inline style. + for (String id : styleIds) { + style.chain(globalStyles.get(id)); + } + return style; + } + // Only inline styles available. + return style; + } + + public static void applyStylesToSpan(SpannableStringBuilder builder, + int start, int end, TtmlStyle style) { + + if (style.getStyle() != TtmlStyle.UNSPECIFIED) { + builder.setSpan(new StyleSpan(style.getStyle()), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.isLinethrough()) { + builder.setSpan(new StrikethroughSpan(), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.isUnderline()) { + builder.setSpan(new UnderlineSpan(), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.hasFontColor()) { + builder.setSpan(new ForegroundColorSpan(style.getFontColor()), start, end, + Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.hasBackgroundColor()) { + builder.setSpan(new BackgroundColorSpan(style.getBackgroundColor()), start, end, + Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.getFontFamily() != null) { + builder.setSpan(new TypefaceSpan(style.getFontFamily()), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.getTextAlign() != null) { + builder.setSpan(new AlignmentSpan.Standard(style.getTextAlign()), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + switch (style.getFontSizeUnit()) { + case TtmlStyle.FONT_SIZE_UNIT_PIXEL: + builder.setSpan(new AbsoluteSizeSpan((int) style.getFontSize(), true), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + break; + case TtmlStyle.FONT_SIZE_UNIT_EM: + builder.setSpan(new RelativeSizeSpan(style.getFontSize()), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + break; + case TtmlStyle.FONT_SIZE_UNIT_PERCENT: + builder.setSpan(new RelativeSizeSpan(style.getFontSize() / 100), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + break; + case TtmlStyle.UNSPECIFIED: + // Do nothing. + break; + } + } + + /** + * Called when the end of a paragraph is encountered. Adds a newline if there are one or more + * non-space characters since the previous newline. + * + * @param builder The builder. + */ + /* package */ static void endParagraph(SpannableStringBuilder builder) { + int position = builder.length() - 1; + while (position >= 0 && builder.charAt(position) == ' ') { + position--; + } + if (position >= 0 && builder.charAt(position) != '\n') { + builder.append('\n'); + } + } + + /** + * Applies the appropriate space policy to the given text element. + * + * @param in The text element to which the policy should be applied. + * @return The result of applying the policy to the text element. + */ + /* package */ static String applyTextElementSpacePolicy(String in) { + // Removes carriage return followed by line feed. See: http://www.w3.org/TR/xml/#sec-line-ends + String out = in.replaceAll("\r\n", "\n"); + // Apply suppress-at-line-break="auto" and + // white-space-treatment="ignore-if-surrounding-linefeed" + out = out.replaceAll(" *\n *", "\n"); + // Apply linefeed-treatment="treat-as-space" + out = out.replaceAll("\n", " "); + // Apply white-space-collapse="true" + out = out.replaceAll("[ \t\\x0B\f\r]+", " "); + return out; + } + + private TtmlRenderUtil() {} + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlStyle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlStyle.java new file mode 100644 index 0000000000..57faaecb69 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlStyle.java @@ -0,0 +1,268 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ttml; + +import android.graphics.Typeface; +import android.text.Layout; +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Style object of a TtmlNode + */ +/* package */ final class TtmlStyle { + + public static final int UNSPECIFIED = -1; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {UNSPECIFIED, STYLE_NORMAL, STYLE_BOLD, STYLE_ITALIC, STYLE_BOLD_ITALIC}) + public @interface StyleFlags {} + + public static final int STYLE_NORMAL = Typeface.NORMAL; + public static final int STYLE_BOLD = Typeface.BOLD; + public static final int STYLE_ITALIC = Typeface.ITALIC; + public static final int STYLE_BOLD_ITALIC = Typeface.BOLD_ITALIC; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({UNSPECIFIED, FONT_SIZE_UNIT_PIXEL, FONT_SIZE_UNIT_EM, FONT_SIZE_UNIT_PERCENT}) + public @interface FontSizeUnit {} + + public static final int FONT_SIZE_UNIT_PIXEL = 1; + public static final int FONT_SIZE_UNIT_EM = 2; + public static final int FONT_SIZE_UNIT_PERCENT = 3; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({UNSPECIFIED, OFF, ON}) + private @interface OptionalBoolean {} + + private static final int OFF = 0; + private static final int ON = 1; + + private String fontFamily; + private int fontColor; + private boolean hasFontColor; + private int backgroundColor; + private boolean hasBackgroundColor; + @OptionalBoolean private int linethrough; + @OptionalBoolean private int underline; + @OptionalBoolean private int bold; + @OptionalBoolean private int italic; + @FontSizeUnit private int fontSizeUnit; + private float fontSize; + private String id; + private TtmlStyle inheritableStyle; + private Layout.Alignment textAlign; + + public TtmlStyle() { + linethrough = UNSPECIFIED; + underline = UNSPECIFIED; + bold = UNSPECIFIED; + italic = UNSPECIFIED; + fontSizeUnit = UNSPECIFIED; + } + + /** + * Returns the style or {@link #UNSPECIFIED} when no style information is given. + * + * @return {@link #UNSPECIFIED}, {@link #STYLE_NORMAL}, {@link #STYLE_BOLD}, {@link #STYLE_BOLD} + * or {@link #STYLE_BOLD_ITALIC}. + */ + @StyleFlags public int getStyle() { + if (bold == UNSPECIFIED && italic == UNSPECIFIED) { + return UNSPECIFIED; + } + return (bold == ON ? STYLE_BOLD : STYLE_NORMAL) + | (italic == ON ? STYLE_ITALIC : STYLE_NORMAL); + } + + public boolean isLinethrough() { + return linethrough == ON; + } + + public TtmlStyle setLinethrough(boolean linethrough) { + Assertions.checkState(inheritableStyle == null); + this.linethrough = linethrough ? ON : OFF; + return this; + } + + public boolean isUnderline() { + return underline == ON; + } + + public TtmlStyle setUnderline(boolean underline) { + Assertions.checkState(inheritableStyle == null); + this.underline = underline ? ON : OFF; + return this; + } + + public TtmlStyle setBold(boolean bold) { + Assertions.checkState(inheritableStyle == null); + this.bold = bold ? ON : OFF; + return this; + } + + public TtmlStyle setItalic(boolean italic) { + Assertions.checkState(inheritableStyle == null); + this.italic = italic ? ON : OFF; + return this; + } + + public String getFontFamily() { + return fontFamily; + } + + public TtmlStyle setFontFamily(String fontFamily) { + Assertions.checkState(inheritableStyle == null); + this.fontFamily = fontFamily; + return this; + } + + public int getFontColor() { + if (!hasFontColor) { + throw new IllegalStateException("Font color has not been defined."); + } + return fontColor; + } + + public TtmlStyle setFontColor(int fontColor) { + Assertions.checkState(inheritableStyle == null); + this.fontColor = fontColor; + hasFontColor = true; + return this; + } + + public boolean hasFontColor() { + return hasFontColor; + } + + public int getBackgroundColor() { + if (!hasBackgroundColor) { + throw new IllegalStateException("Background color has not been defined."); + } + return backgroundColor; + } + + public TtmlStyle setBackgroundColor(int backgroundColor) { + this.backgroundColor = backgroundColor; + hasBackgroundColor = true; + return this; + } + + public boolean hasBackgroundColor() { + return hasBackgroundColor; + } + + /** + * Inherits from an ancestor style. Properties like tts:backgroundColor which + * are not inheritable are not inherited as well as properties which are already set locally + * are never overridden. + * + * @param ancestor the ancestor style to inherit from + */ + public TtmlStyle inherit(TtmlStyle ancestor) { + return inherit(ancestor, false); + } + + /** + * Chains this style to referential style. Local properties which are already set + * are never overridden. + * + * @param ancestor the referential style to inherit from + */ + public TtmlStyle chain(TtmlStyle ancestor) { + return inherit(ancestor, true); + } + + private TtmlStyle inherit(TtmlStyle ancestor, boolean chaining) { + if (ancestor != null) { + if (!hasFontColor && ancestor.hasFontColor) { + setFontColor(ancestor.fontColor); + } + if (bold == UNSPECIFIED) { + bold = ancestor.bold; + } + if (italic == UNSPECIFIED) { + italic = ancestor.italic; + } + if (fontFamily == null) { + fontFamily = ancestor.fontFamily; + } + if (linethrough == UNSPECIFIED) { + linethrough = ancestor.linethrough; + } + if (underline == UNSPECIFIED) { + underline = ancestor.underline; + } + if (textAlign == null) { + textAlign = ancestor.textAlign; + } + if (fontSizeUnit == UNSPECIFIED) { + fontSizeUnit = ancestor.fontSizeUnit; + fontSize = ancestor.fontSize; + } + // attributes not inherited as of http://www.w3.org/TR/ttml1/ + if (chaining && !hasBackgroundColor && ancestor.hasBackgroundColor) { + setBackgroundColor(ancestor.backgroundColor); + } + } + return this; + } + + public TtmlStyle setId(String id) { + this.id = id; + return this; + } + + public String getId() { + return id; + } + + public Layout.Alignment getTextAlign() { + return textAlign; + } + + public TtmlStyle setTextAlign(Layout.Alignment textAlign) { + this.textAlign = textAlign; + return this; + } + + public TtmlStyle setFontSize(float fontSize) { + this.fontSize = fontSize; + return this; + } + + public TtmlStyle setFontSizeUnit(int fontSizeUnit) { + this.fontSizeUnit = fontSizeUnit; + return this; + } + + @FontSizeUnit public int getFontSizeUnit() { + return fontSizeUnit; + } + + public float getFontSize() { + return fontSize; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlSubtitle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlSubtitle.java new file mode 100644 index 0000000000..52bd389818 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/TtmlSubtitle.java @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ttml; + +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Collections; +import java.util.List; +import java.util.Map; + +/** + * A representation of a TTML subtitle. + */ +/* package */ final class TtmlSubtitle implements Subtitle { + + private final TtmlNode root; + private final long[] eventTimesUs; + private final Map globalStyles; + private final Map regionMap; + private final Map imageMap; + + public TtmlSubtitle( + TtmlNode root, + Map globalStyles, + Map regionMap, + Map imageMap) { + this.root = root; + this.regionMap = regionMap; + this.imageMap = imageMap; + this.globalStyles = + globalStyles != null ? Collections.unmodifiableMap(globalStyles) : Collections.emptyMap(); + this.eventTimesUs = root.getEventTimesUs(); + } + + @Override + public int getNextEventTimeIndex(long timeUs) { + int index = Util.binarySearchCeil(eventTimesUs, timeUs, false, false); + return index < eventTimesUs.length ? index : C.INDEX_UNSET; + } + + @Override + public int getEventTimeCount() { + return eventTimesUs.length; + } + + @Override + public long getEventTime(int index) { + return eventTimesUs[index]; + } + + @VisibleForTesting + /* package */ TtmlNode getRoot() { + return root; + } + + @Override + public List getCues(long timeUs) { + return root.getCues(timeUs, globalStyles, regionMap, imageMap); + } + + @VisibleForTesting + /* package */ Map getGlobalStyles() { + return globalStyles; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/package-info.java new file mode 100644 index 0000000000..e6e7a5a8e3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/ttml/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.ttml; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/tx3g/Tx3gDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/tx3g/Tx3gDecoder.java new file mode 100644 index 0000000000..a6b9ab5c63 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/tx3g/Tx3gDecoder.java @@ -0,0 +1,241 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.tx3g; + +import android.graphics.Color; +import android.graphics.Typeface; +import android.text.SpannableStringBuilder; +import android.text.Spanned; +import android.text.style.ForegroundColorSpan; +import android.text.style.StyleSpan; +import android.text.style.TypefaceSpan; +import android.text.style.UnderlineSpan; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SimpleSubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleDecoderException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.nio.charset.Charset; +import java.util.List; + +/** + * A {@link SimpleSubtitleDecoder} for tx3g. + *

+ * Currently supports parsing of a single text track with embedded styles. + */ +public final class Tx3gDecoder extends SimpleSubtitleDecoder { + + private static final char BOM_UTF16_BE = '\uFEFF'; + private static final char BOM_UTF16_LE = '\uFFFE'; + + private static final int TYPE_STYL = 0x7374796c; + private static final int TYPE_TBOX = 0x74626f78; + private static final String TX3G_SERIF = "Serif"; + + private static final int SIZE_ATOM_HEADER = 8; + private static final int SIZE_SHORT = 2; + private static final int SIZE_BOM_UTF16 = 2; + private static final int SIZE_STYLE_RECORD = 12; + + private static final int FONT_FACE_BOLD = 0x0001; + private static final int FONT_FACE_ITALIC = 0x0002; + private static final int FONT_FACE_UNDERLINE = 0x0004; + + private static final int SPAN_PRIORITY_LOW = 0xFF << Spanned.SPAN_PRIORITY_SHIFT; + private static final int SPAN_PRIORITY_HIGH = 0; + + private static final int DEFAULT_FONT_FACE = 0; + private static final int DEFAULT_COLOR = Color.WHITE; + private static final String DEFAULT_FONT_FAMILY = C.SANS_SERIF_NAME; + private static final float DEFAULT_VERTICAL_PLACEMENT = 0.85f; + + private final ParsableByteArray parsableByteArray; + + private boolean customVerticalPlacement; + private int defaultFontFace; + private int defaultColorRgba; + private String defaultFontFamily; + private float defaultVerticalPlacement; + private int calculatedVideoTrackHeight; + + /** + * Sets up a new {@link Tx3gDecoder} with default values. + * + * @param initializationData Sample description atom ('stsd') data with default subtitle styles. + */ + public Tx3gDecoder(List initializationData) { + super("Tx3gDecoder"); + parsableByteArray = new ParsableByteArray(); + + if (initializationData != null && initializationData.size() == 1 + && (initializationData.get(0).length == 48 || initializationData.get(0).length == 53)) { + byte[] initializationBytes = initializationData.get(0); + defaultFontFace = initializationBytes[24]; + defaultColorRgba = ((initializationBytes[26] & 0xFF) << 24) + | ((initializationBytes[27] & 0xFF) << 16) + | ((initializationBytes[28] & 0xFF) << 8) + | (initializationBytes[29] & 0xFF); + String fontFamily = + Util.fromUtf8Bytes(initializationBytes, 43, initializationBytes.length - 43); + defaultFontFamily = TX3G_SERIF.equals(fontFamily) ? C.SERIF_NAME : C.SANS_SERIF_NAME; + //font size (initializationBytes[25]) is 5% of video height + calculatedVideoTrackHeight = 20 * initializationBytes[25]; + customVerticalPlacement = (initializationBytes[0] & 0x20) != 0; + if (customVerticalPlacement) { + int requestedVerticalPlacement = ((initializationBytes[10] & 0xFF) << 8) + | (initializationBytes[11] & 0xFF); + defaultVerticalPlacement = (float) requestedVerticalPlacement / calculatedVideoTrackHeight; + defaultVerticalPlacement = Util.constrainValue(defaultVerticalPlacement, 0.0f, 0.95f); + } else { + defaultVerticalPlacement = DEFAULT_VERTICAL_PLACEMENT; + } + } else { + defaultFontFace = DEFAULT_FONT_FACE; + defaultColorRgba = DEFAULT_COLOR; + defaultFontFamily = DEFAULT_FONT_FAMILY; + customVerticalPlacement = false; + defaultVerticalPlacement = DEFAULT_VERTICAL_PLACEMENT; + } + } + + @Override + protected Subtitle decode(byte[] bytes, int length, boolean reset) + throws SubtitleDecoderException { + parsableByteArray.reset(bytes, length); + String cueTextString = readSubtitleText(parsableByteArray); + if (cueTextString.isEmpty()) { + return Tx3gSubtitle.EMPTY; + } + // Attach default styles. + SpannableStringBuilder cueText = new SpannableStringBuilder(cueTextString); + attachFontFace(cueText, defaultFontFace, DEFAULT_FONT_FACE, 0, cueText.length(), + SPAN_PRIORITY_LOW); + attachColor(cueText, defaultColorRgba, DEFAULT_COLOR, 0, cueText.length(), + SPAN_PRIORITY_LOW); + attachFontFamily(cueText, defaultFontFamily, DEFAULT_FONT_FAMILY, 0, cueText.length(), + SPAN_PRIORITY_LOW); + float verticalPlacement = defaultVerticalPlacement; + // Find and attach additional styles. + while (parsableByteArray.bytesLeft() >= SIZE_ATOM_HEADER) { + int position = parsableByteArray.getPosition(); + int atomSize = parsableByteArray.readInt(); + int atomType = parsableByteArray.readInt(); + if (atomType == TYPE_STYL) { + assertTrue(parsableByteArray.bytesLeft() >= SIZE_SHORT); + int styleRecordCount = parsableByteArray.readUnsignedShort(); + for (int i = 0; i < styleRecordCount; i++) { + applyStyleRecord(parsableByteArray, cueText); + } + } else if (atomType == TYPE_TBOX && customVerticalPlacement) { + assertTrue(parsableByteArray.bytesLeft() >= SIZE_SHORT); + int requestedVerticalPlacement = parsableByteArray.readUnsignedShort(); + verticalPlacement = (float) requestedVerticalPlacement / calculatedVideoTrackHeight; + verticalPlacement = Util.constrainValue(verticalPlacement, 0.0f, 0.95f); + } + parsableByteArray.setPosition(position + atomSize); + } + return new Tx3gSubtitle( + new Cue( + cueText, + /* textAlignment= */ null, + verticalPlacement, + Cue.LINE_TYPE_FRACTION, + Cue.ANCHOR_TYPE_START, + Cue.DIMEN_UNSET, + Cue.TYPE_UNSET, + Cue.DIMEN_UNSET)); + } + + private static String readSubtitleText(ParsableByteArray parsableByteArray) + throws SubtitleDecoderException { + assertTrue(parsableByteArray.bytesLeft() >= SIZE_SHORT); + int textLength = parsableByteArray.readUnsignedShort(); + if (textLength == 0) { + return ""; + } + if (parsableByteArray.bytesLeft() >= SIZE_BOM_UTF16) { + char firstChar = parsableByteArray.peekChar(); + if (firstChar == BOM_UTF16_BE || firstChar == BOM_UTF16_LE) { + return parsableByteArray.readString(textLength, Charset.forName(C.UTF16_NAME)); + } + } + return parsableByteArray.readString(textLength, Charset.forName(C.UTF8_NAME)); + } + + private void applyStyleRecord(ParsableByteArray parsableByteArray, + SpannableStringBuilder cueText) throws SubtitleDecoderException { + assertTrue(parsableByteArray.bytesLeft() >= SIZE_STYLE_RECORD); + int start = parsableByteArray.readUnsignedShort(); + int end = parsableByteArray.readUnsignedShort(); + parsableByteArray.skipBytes(2); // font identifier + int fontFace = parsableByteArray.readUnsignedByte(); + parsableByteArray.skipBytes(1); // font size + int colorRgba = parsableByteArray.readInt(); + attachFontFace(cueText, fontFace, defaultFontFace, start, end, SPAN_PRIORITY_HIGH); + attachColor(cueText, colorRgba, defaultColorRgba, start, end, SPAN_PRIORITY_HIGH); + } + + private static void attachFontFace(SpannableStringBuilder cueText, int fontFace, + int defaultFontFace, int start, int end, int spanPriority) { + if (fontFace != defaultFontFace) { + final int flags = Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | spanPriority; + boolean isBold = (fontFace & FONT_FACE_BOLD) != 0; + boolean isItalic = (fontFace & FONT_FACE_ITALIC) != 0; + if (isBold) { + if (isItalic) { + cueText.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), start, end, flags); + } else { + cueText.setSpan(new StyleSpan(Typeface.BOLD), start, end, flags); + } + } else if (isItalic) { + cueText.setSpan(new StyleSpan(Typeface.ITALIC), start, end, flags); + } + boolean isUnderlined = (fontFace & FONT_FACE_UNDERLINE) != 0; + if (isUnderlined) { + cueText.setSpan(new UnderlineSpan(), start, end, flags); + } + if (!isUnderlined && !isBold && !isItalic) { + cueText.setSpan(new StyleSpan(Typeface.NORMAL), start, end, flags); + } + } + } + + private static void attachColor(SpannableStringBuilder cueText, int colorRgba, + int defaultColorRgba, int start, int end, int spanPriority) { + if (colorRgba != defaultColorRgba) { + int colorArgb = ((colorRgba & 0xFF) << 24) | (colorRgba >>> 8); + cueText.setSpan(new ForegroundColorSpan(colorArgb), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | spanPriority); + } + } + + @SuppressWarnings("ReferenceEquality") + private static void attachFontFamily(SpannableStringBuilder cueText, String fontFamily, + String defaultFontFamily, int start, int end, int spanPriority) { + if (fontFamily != defaultFontFamily) { + cueText.setSpan(new TypefaceSpan(fontFamily), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | spanPriority); + } + } + + private static void assertTrue(boolean checkValue) throws SubtitleDecoderException { + if (!checkValue) { + throw new SubtitleDecoderException("Unexpected subtitle format."); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/tx3g/Tx3gSubtitle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/tx3g/Tx3gSubtitle.java new file mode 100644 index 0000000000..93bc6034d1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/tx3g/Tx3gSubtitle.java @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.tx3g; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.Collections; +import java.util.List; + +/** + * A representation of a tx3g subtitle. + */ +/* package */ final class Tx3gSubtitle implements Subtitle { + + public static final Tx3gSubtitle EMPTY = new Tx3gSubtitle(); + + private final List cues; + + public Tx3gSubtitle(Cue cue) { + this.cues = Collections.singletonList(cue); + } + + private Tx3gSubtitle() { + this.cues = Collections.emptyList(); + } + + @Override + public int getNextEventTimeIndex(long timeUs) { + return timeUs < 0 ? 0 : C.INDEX_UNSET; + } + + @Override + public int getEventTimeCount() { + return 1; + } + + @Override + public long getEventTime(int index) { + Assertions.checkArgument(index == 0); + return 0; + } + + @Override + public List getCues(long timeUs) { + return timeUs >= 0 ? cues : Collections.emptyList(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/tx3g/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/tx3g/package-info.java new file mode 100644 index 0000000000..7bac8c12b6 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/tx3g/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.tx3g; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/CssParser.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/CssParser.java new file mode 100644 index 0000000000..3337cc3481 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/CssParser.java @@ -0,0 +1,347 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt; + +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ColorParser; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.List; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** + * Provides a CSS parser for STYLE blocks in Webvtt files. Supports only a subset of the CSS + * features. + */ +/* package */ final class CssParser { + + private static final String PROPERTY_BGCOLOR = "background-color"; + private static final String PROPERTY_FONT_FAMILY = "font-family"; + private static final String PROPERTY_FONT_WEIGHT = "font-weight"; + private static final String PROPERTY_TEXT_DECORATION = "text-decoration"; + private static final String VALUE_BOLD = "bold"; + private static final String VALUE_UNDERLINE = "underline"; + private static final String RULE_START = "{"; + private static final String RULE_END = "}"; + private static final String PROPERTY_FONT_STYLE = "font-style"; + private static final String VALUE_ITALIC = "italic"; + + private static final Pattern VOICE_NAME_PATTERN = Pattern.compile("\\[voice=\"([^\"]*)\"\\]"); + + // Temporary utility data structures. + private final ParsableByteArray styleInput; + private final StringBuilder stringBuilder; + + public CssParser() { + styleInput = new ParsableByteArray(); + stringBuilder = new StringBuilder(); + } + + /** + * Takes a CSS style block and consumes up to the first empty line. Attempts to parse the contents + * of the style block and returns a list of {@link WebvttCssStyle} instances if successful. If + * parsing fails, it returns a list including only the styles which have been successfully parsed + * up to the style rule which was malformed. + * + * @param input The input from which the style block should be read. + * @return A list of {@link WebvttCssStyle}s that represents the parsed block, or a list + * containing the styles up to the parsing failure. + */ + public List parseBlock(ParsableByteArray input) { + stringBuilder.setLength(0); + int initialInputPosition = input.getPosition(); + skipStyleBlock(input); + styleInput.reset(input.data, input.getPosition()); + styleInput.setPosition(initialInputPosition); + + List styles = new ArrayList<>(); + String selector; + while ((selector = parseSelector(styleInput, stringBuilder)) != null) { + if (!RULE_START.equals(parseNextToken(styleInput, stringBuilder))) { + return styles; + } + WebvttCssStyle style = new WebvttCssStyle(); + applySelectorToStyle(style, selector); + String token = null; + boolean blockEndFound = false; + while (!blockEndFound) { + int position = styleInput.getPosition(); + token = parseNextToken(styleInput, stringBuilder); + blockEndFound = token == null || RULE_END.equals(token); + if (!blockEndFound) { + styleInput.setPosition(position); + parseStyleDeclaration(styleInput, style, stringBuilder); + } + } + // Check that the style rule ended correctly. + if (RULE_END.equals(token)) { + styles.add(style); + } + } + return styles; + } + + /** + * Returns a string containing the selector. The input is expected to have the form {@code + * ::cue(tag#id.class1.class2[voice="someone"]}, where every element is optional. + * + * @param input From which the selector is obtained. + * @return A string containing the target, empty string if the selector is universal (targets all + * cues) or null if an error was encountered. + */ + @Nullable + private static String parseSelector(ParsableByteArray input, StringBuilder stringBuilder) { + skipWhitespaceAndComments(input); + if (input.bytesLeft() < 5) { + return null; + } + String cueSelector = input.readString(5); + if (!"::cue".equals(cueSelector)) { + return null; + } + int position = input.getPosition(); + String token = parseNextToken(input, stringBuilder); + if (token == null) { + return null; + } + if (RULE_START.equals(token)) { + input.setPosition(position); + return ""; + } + String target = null; + if ("(".equals(token)) { + target = readCueTarget(input); + } + token = parseNextToken(input, stringBuilder); + if (!")".equals(token)) { + return null; + } + return target; + } + + /** + * Reads the contents of ::cue() and returns it as a string. + */ + private static String readCueTarget(ParsableByteArray input) { + int position = input.getPosition(); + int limit = input.limit(); + boolean cueTargetEndFound = false; + while (position < limit && !cueTargetEndFound) { + char c = (char) input.data[position++]; + cueTargetEndFound = c == ')'; + } + return input.readString(--position - input.getPosition()).trim(); + // --offset to return ')' to the input. + } + + private static void parseStyleDeclaration(ParsableByteArray input, WebvttCssStyle style, + StringBuilder stringBuilder) { + skipWhitespaceAndComments(input); + String property = parseIdentifier(input, stringBuilder); + if ("".equals(property)) { + return; + } + if (!":".equals(parseNextToken(input, stringBuilder))) { + return; + } + skipWhitespaceAndComments(input); + String value = parsePropertyValue(input, stringBuilder); + if (value == null || "".equals(value)) { + return; + } + int position = input.getPosition(); + String token = parseNextToken(input, stringBuilder); + if (";".equals(token)) { + // The style declaration is well formed. + } else if (RULE_END.equals(token)) { + // The style declaration is well formed and we can go on, but the closing bracket had to be + // fed back. + input.setPosition(position); + } else { + // The style declaration is not well formed. + return; + } + // At this point we have a presumably valid declaration, we need to parse it and fill the style. + if ("color".equals(property)) { + style.setFontColor(ColorParser.parseCssColor(value)); + } else if (PROPERTY_BGCOLOR.equals(property)) { + style.setBackgroundColor(ColorParser.parseCssColor(value)); + } else if (PROPERTY_TEXT_DECORATION.equals(property)) { + if (VALUE_UNDERLINE.equals(value)) { + style.setUnderline(true); + } + } else if (PROPERTY_FONT_FAMILY.equals(property)) { + style.setFontFamily(value); + } else if (PROPERTY_FONT_WEIGHT.equals(property)) { + if (VALUE_BOLD.equals(value)) { + style.setBold(true); + } + } else if (PROPERTY_FONT_STYLE.equals(property)) { + if (VALUE_ITALIC.equals(value)) { + style.setItalic(true); + } + } + // TODO: Fill remaining supported styles. + } + + // Visible for testing. + /* package */ static void skipWhitespaceAndComments(ParsableByteArray input) { + boolean skipping = true; + while (input.bytesLeft() > 0 && skipping) { + skipping = maybeSkipWhitespace(input) || maybeSkipComment(input); + } + } + + // Visible for testing. + @Nullable + /* package */ static String parseNextToken(ParsableByteArray input, StringBuilder stringBuilder) { + skipWhitespaceAndComments(input); + if (input.bytesLeft() == 0) { + return null; + } + String identifier = parseIdentifier(input, stringBuilder); + if (!"".equals(identifier)) { + return identifier; + } + // We found a delimiter. + return "" + (char) input.readUnsignedByte(); + } + + private static boolean maybeSkipWhitespace(ParsableByteArray input) { + switch(peekCharAtPosition(input, input.getPosition())) { + case '\t': + case '\r': + case '\n': + case '\f': + case ' ': + input.skipBytes(1); + return true; + default: + return false; + } + } + + // Visible for testing. + /* package */ static void skipStyleBlock(ParsableByteArray input) { + // The style block cannot contain empty lines, so we assume the input ends when a empty line + // is found. + String line; + do { + line = input.readLine(); + } while (!TextUtils.isEmpty(line)); + } + + private static char peekCharAtPosition(ParsableByteArray input, int position) { + return (char) input.data[position]; + } + + @Nullable + private static String parsePropertyValue(ParsableByteArray input, StringBuilder stringBuilder) { + StringBuilder expressionBuilder = new StringBuilder(); + String token; + int position; + boolean expressionEndFound = false; + // TODO: Add support for "Strings in quotes with spaces". + while (!expressionEndFound) { + position = input.getPosition(); + token = parseNextToken(input, stringBuilder); + if (token == null) { + // Syntax error. + return null; + } + if (RULE_END.equals(token) || ";".equals(token)) { + input.setPosition(position); + expressionEndFound = true; + } else { + expressionBuilder.append(token); + } + } + return expressionBuilder.toString(); + } + + private static boolean maybeSkipComment(ParsableByteArray input) { + int position = input.getPosition(); + int limit = input.limit(); + byte[] data = input.data; + if (position + 2 <= limit && data[position++] == '/' && data[position++] == '*') { + while (position + 1 < limit) { + char skippedChar = (char) data[position++]; + if (skippedChar == '*') { + if (((char) data[position]) == '/') { + position++; + limit = position; + } + } + } + input.skipBytes(limit - input.getPosition()); + return true; + } + return false; + } + + private static String parseIdentifier(ParsableByteArray input, StringBuilder stringBuilder) { + stringBuilder.setLength(0); + int position = input.getPosition(); + int limit = input.limit(); + boolean identifierEndFound = false; + while (position < limit && !identifierEndFound) { + char c = (char) input.data[position]; + if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || c == '#' + || c == '-' || c == '.' || c == '_') { + position++; + stringBuilder.append(c); + } else { + identifierEndFound = true; + } + } + input.skipBytes(position - input.getPosition()); + return stringBuilder.toString(); + } + + /** + * Sets the target of a {@link WebvttCssStyle} by splitting a selector of the form + * {@code ::cue(tag#id.class1.class2[voice="someone"]}, where every element is optional. + */ + private void applySelectorToStyle(WebvttCssStyle style, String selector) { + if ("".equals(selector)) { + return; // Universal selector. + } + int voiceStartIndex = selector.indexOf('['); + if (voiceStartIndex != -1) { + Matcher matcher = VOICE_NAME_PATTERN.matcher(selector.substring(voiceStartIndex)); + if (matcher.matches()) { + style.setTargetVoice(matcher.group(1)); + } + selector = selector.substring(0, voiceStartIndex); + } + String[] classDivision = Util.split(selector, "\\."); + String tagAndIdDivision = classDivision[0]; + int idPrefixIndex = tagAndIdDivision.indexOf('#'); + if (idPrefixIndex != -1) { + style.setTargetTagName(tagAndIdDivision.substring(0, idPrefixIndex)); + style.setTargetId(tagAndIdDivision.substring(idPrefixIndex + 1)); // We discard the '#'. + } else { + style.setTargetTagName(tagAndIdDivision); + } + if (classDivision.length > 1) { + style.setTargetClasses(Util.nullSafeArrayCopyOfRange(classDivision, 1, classDivision.length)); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/Mp4WebvttDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/Mp4WebvttDecoder.java new file mode 100644 index 0000000000..3df35c789b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/Mp4WebvttDecoder.java @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SimpleSubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleDecoderException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** A {@link SimpleSubtitleDecoder} for Webvtt embedded in a Mp4 container file. */ +@SuppressWarnings("ConstantField") +public final class Mp4WebvttDecoder extends SimpleSubtitleDecoder { + + private static final int BOX_HEADER_SIZE = 8; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_payl = 0x7061796c; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_sttg = 0x73747467; + + @SuppressWarnings("ConstantCaseForConstants") + private static final int TYPE_vttc = 0x76747463; + + private final ParsableByteArray sampleData; + private final WebvttCue.Builder builder; + + public Mp4WebvttDecoder() { + super("Mp4WebvttDecoder"); + sampleData = new ParsableByteArray(); + builder = new WebvttCue.Builder(); + } + + @Override + protected Subtitle decode(byte[] bytes, int length, boolean reset) + throws SubtitleDecoderException { + // Webvtt in Mp4 samples have boxes inside of them, so we have to do a traditional box parsing: + // first 4 bytes size and then 4 bytes type. + sampleData.reset(bytes, length); + List resultingCueList = new ArrayList<>(); + while (sampleData.bytesLeft() > 0) { + if (sampleData.bytesLeft() < BOX_HEADER_SIZE) { + throw new SubtitleDecoderException("Incomplete Mp4Webvtt Top Level box header found."); + } + int boxSize = sampleData.readInt(); + int boxType = sampleData.readInt(); + if (boxType == TYPE_vttc) { + resultingCueList.add(parseVttCueBox(sampleData, builder, boxSize - BOX_HEADER_SIZE)); + } else { + // Peers of the VTTCueBox are still not supported and are skipped. + sampleData.skipBytes(boxSize - BOX_HEADER_SIZE); + } + } + return new Mp4WebvttSubtitle(resultingCueList); + } + + private static Cue parseVttCueBox(ParsableByteArray sampleData, WebvttCue.Builder builder, + int remainingCueBoxBytes) throws SubtitleDecoderException { + builder.reset(); + while (remainingCueBoxBytes > 0) { + if (remainingCueBoxBytes < BOX_HEADER_SIZE) { + throw new SubtitleDecoderException("Incomplete vtt cue box header found."); + } + int boxSize = sampleData.readInt(); + int boxType = sampleData.readInt(); + remainingCueBoxBytes -= BOX_HEADER_SIZE; + int payloadLength = boxSize - BOX_HEADER_SIZE; + String boxPayload = + Util.fromUtf8Bytes(sampleData.data, sampleData.getPosition(), payloadLength); + sampleData.skipBytes(payloadLength); + remainingCueBoxBytes -= payloadLength; + if (boxType == TYPE_sttg) { + WebvttCueParser.parseCueSettingsList(boxPayload, builder); + } else if (boxType == TYPE_payl) { + WebvttCueParser.parseCueText(null, boxPayload.trim(), builder, Collections.emptyList()); + } else { + // Other VTTCueBox children are still not supported and are ignored. + } + } + return builder.build(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/Mp4WebvttSubtitle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/Mp4WebvttSubtitle.java new file mode 100644 index 0000000000..545e8b2511 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/Mp4WebvttSubtitle.java @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.Collections; +import java.util.List; + +/** + * Representation of a Webvtt subtitle embedded in a MP4 container file. + */ +/* package */ final class Mp4WebvttSubtitle implements Subtitle { + + private final List cues; + + public Mp4WebvttSubtitle(List cueList) { + cues = Collections.unmodifiableList(cueList); + } + + @Override + public int getNextEventTimeIndex(long timeUs) { + return timeUs < 0 ? 0 : C.INDEX_UNSET; + } + + @Override + public int getEventTimeCount() { + return 1; + } + + @Override + public long getEventTime(int index) { + Assertions.checkArgument(index == 0); + return 0; + } + + @Override + public List getCues(long timeUs) { + return timeUs >= 0 ? cues : Collections.emptyList(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttCssStyle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttCssStyle.java new file mode 100644 index 0000000000..da37cfbdf3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttCssStyle.java @@ -0,0 +1,329 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt; + +import android.graphics.Typeface; +import android.text.Layout; +import android.text.TextUtils; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; +import org.checkerframework.checker.nullness.qual.EnsuresNonNull; + +/** + * Style object of a Css style block in a Webvtt file. + * + * @see W3C specification - Apply + * CSS properties + */ +public final class WebvttCssStyle { + + public static final int UNSPECIFIED = -1; + + /** + * Style flag enum. Possible flag values are {@link #UNSPECIFIED}, {@link #STYLE_NORMAL}, {@link + * #STYLE_BOLD}, {@link #STYLE_ITALIC} and {@link #STYLE_BOLD_ITALIC}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {UNSPECIFIED, STYLE_NORMAL, STYLE_BOLD, STYLE_ITALIC, STYLE_BOLD_ITALIC}) + public @interface StyleFlags {} + + public static final int STYLE_NORMAL = Typeface.NORMAL; + public static final int STYLE_BOLD = Typeface.BOLD; + public static final int STYLE_ITALIC = Typeface.ITALIC; + public static final int STYLE_BOLD_ITALIC = Typeface.BOLD_ITALIC; + + /** + * Font size unit enum. One of {@link #UNSPECIFIED}, {@link #FONT_SIZE_UNIT_PIXEL}, {@link + * #FONT_SIZE_UNIT_EM} or {@link #FONT_SIZE_UNIT_PERCENT}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({UNSPECIFIED, FONT_SIZE_UNIT_PIXEL, FONT_SIZE_UNIT_EM, FONT_SIZE_UNIT_PERCENT}) + public @interface FontSizeUnit {} + + public static final int FONT_SIZE_UNIT_PIXEL = 1; + public static final int FONT_SIZE_UNIT_EM = 2; + public static final int FONT_SIZE_UNIT_PERCENT = 3; + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({UNSPECIFIED, OFF, ON}) + private @interface OptionalBoolean {} + + private static final int OFF = 0; + private static final int ON = 1; + + // Selector properties. + private String targetId; + private String targetTag; + private List targetClasses; + private String targetVoice; + + // Style properties. + @Nullable private String fontFamily; + private int fontColor; + private boolean hasFontColor; + private int backgroundColor; + private boolean hasBackgroundColor; + @OptionalBoolean private int linethrough; + @OptionalBoolean private int underline; + @OptionalBoolean private int bold; + @OptionalBoolean private int italic; + @FontSizeUnit private int fontSizeUnit; + private float fontSize; + @Nullable private Layout.Alignment textAlign; + + // Calling reset() is forbidden because `this` isn't initialized. This can be safely suppressed + // because reset() only assigns fields, it doesn't read any. + @SuppressWarnings("nullness:method.invocation.invalid") + public WebvttCssStyle() { + reset(); + } + + @EnsuresNonNull({"targetId", "targetTag", "targetClasses", "targetVoice"}) + public void reset() { + targetId = ""; + targetTag = ""; + targetClasses = Collections.emptyList(); + targetVoice = ""; + fontFamily = null; + hasFontColor = false; + hasBackgroundColor = false; + linethrough = UNSPECIFIED; + underline = UNSPECIFIED; + bold = UNSPECIFIED; + italic = UNSPECIFIED; + fontSizeUnit = UNSPECIFIED; + textAlign = null; + } + + public void setTargetId(String targetId) { + this.targetId = targetId; + } + + public void setTargetTagName(String targetTag) { + this.targetTag = targetTag; + } + + public void setTargetClasses(String[] targetClasses) { + this.targetClasses = Arrays.asList(targetClasses); + } + + public void setTargetVoice(String targetVoice) { + this.targetVoice = targetVoice; + } + + /** + * Returns a value in a score system compliant with the CSS Specificity rules. + * + * @see CSS Cascading + *

The score works as follows: + *

    + *
  • Id match adds 0x40000000 to the score. + *
  • Each class and voice match adds 4 to the score. + *
  • Tag matching adds 2 to the score. + *
  • Universal selector matching scores 1. + *
+ * + * @param id The id of the cue if present, {@code null} otherwise. + * @param tag Name of the tag, {@code null} if it refers to the entire cue. + * @param classes An array containing the classes the tag belongs to. Must not be null. + * @param voice Annotated voice if present, {@code null} otherwise. + * @return The score of the match, zero if there is no match. + */ + public int getSpecificityScore( + @Nullable String id, @Nullable String tag, String[] classes, @Nullable String voice) { + if (targetId.isEmpty() && targetTag.isEmpty() && targetClasses.isEmpty() + && targetVoice.isEmpty()) { + // The selector is universal. It matches with the minimum score if and only if the given + // element is a whole cue. + return TextUtils.isEmpty(tag) ? 1 : 0; + } + int score = 0; + score = updateScoreForMatch(score, targetId, id, 0x40000000); + score = updateScoreForMatch(score, targetTag, tag, 2); + score = updateScoreForMatch(score, targetVoice, voice, 4); + if (score == -1 || !Arrays.asList(classes).containsAll(targetClasses)) { + return 0; + } else { + score += targetClasses.size() * 4; + } + return score; + } + + /** + * Returns the style or {@link #UNSPECIFIED} when no style information is given. + * + * @return {@link #UNSPECIFIED}, {@link #STYLE_NORMAL}, {@link #STYLE_BOLD}, {@link #STYLE_BOLD} + * or {@link #STYLE_BOLD_ITALIC}. + */ + @StyleFlags public int getStyle() { + if (bold == UNSPECIFIED && italic == UNSPECIFIED) { + return UNSPECIFIED; + } + return (bold == ON ? STYLE_BOLD : STYLE_NORMAL) + | (italic == ON ? STYLE_ITALIC : STYLE_NORMAL); + } + + public boolean isLinethrough() { + return linethrough == ON; + } + + public WebvttCssStyle setLinethrough(boolean linethrough) { + this.linethrough = linethrough ? ON : OFF; + return this; + } + + public boolean isUnderline() { + return underline == ON; + } + + public WebvttCssStyle setUnderline(boolean underline) { + this.underline = underline ? ON : OFF; + return this; + } + public WebvttCssStyle setBold(boolean bold) { + this.bold = bold ? ON : OFF; + return this; + } + + public WebvttCssStyle setItalic(boolean italic) { + this.italic = italic ? ON : OFF; + return this; + } + + @Nullable + public String getFontFamily() { + return fontFamily; + } + + public WebvttCssStyle setFontFamily(@Nullable String fontFamily) { + this.fontFamily = Util.toLowerInvariant(fontFamily); + return this; + } + + public int getFontColor() { + if (!hasFontColor) { + throw new IllegalStateException("Font color not defined"); + } + return fontColor; + } + + public WebvttCssStyle setFontColor(int color) { + this.fontColor = color; + hasFontColor = true; + return this; + } + + public boolean hasFontColor() { + return hasFontColor; + } + + public int getBackgroundColor() { + if (!hasBackgroundColor) { + throw new IllegalStateException("Background color not defined."); + } + return backgroundColor; + } + + public WebvttCssStyle setBackgroundColor(int backgroundColor) { + this.backgroundColor = backgroundColor; + hasBackgroundColor = true; + return this; + } + + public boolean hasBackgroundColor() { + return hasBackgroundColor; + } + + @Nullable + public Layout.Alignment getTextAlign() { + return textAlign; + } + + public WebvttCssStyle setTextAlign(@Nullable Layout.Alignment textAlign) { + this.textAlign = textAlign; + return this; + } + + public WebvttCssStyle setFontSize(float fontSize) { + this.fontSize = fontSize; + return this; + } + + public WebvttCssStyle setFontSizeUnit(short unit) { + this.fontSizeUnit = unit; + return this; + } + + @FontSizeUnit public int getFontSizeUnit() { + return fontSizeUnit; + } + + public float getFontSize() { + return fontSize; + } + + public void cascadeFrom(WebvttCssStyle style) { + if (style.hasFontColor) { + setFontColor(style.fontColor); + } + if (style.bold != UNSPECIFIED) { + bold = style.bold; + } + if (style.italic != UNSPECIFIED) { + italic = style.italic; + } + if (style.fontFamily != null) { + fontFamily = style.fontFamily; + } + if (linethrough == UNSPECIFIED) { + linethrough = style.linethrough; + } + if (underline == UNSPECIFIED) { + underline = style.underline; + } + if (textAlign == null) { + textAlign = style.textAlign; + } + if (fontSizeUnit == UNSPECIFIED) { + fontSizeUnit = style.fontSizeUnit; + fontSize = style.fontSize; + } + if (style.hasBackgroundColor) { + setBackgroundColor(style.backgroundColor); + } + } + + private static int updateScoreForMatch( + int currentScore, String target, @Nullable String actual, int score) { + if (target.isEmpty() || currentScore == -1) { + return currentScore; + } + return target.equals(actual) ? currentScore + score : -1; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttCue.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttCue.java new file mode 100644 index 0000000000..af701d8f54 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttCue.java @@ -0,0 +1,319 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt; + +import static java.lang.annotation.RetentionPolicy.SOURCE; + +import android.text.Layout.Alignment; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; + +/** A representation of a WebVTT cue. */ +public final class WebvttCue extends Cue { + + private static final float DEFAULT_POSITION = 0.5f; + + public final long startTime; + public final long endTime; + + private WebvttCue( + long startTime, + long endTime, + CharSequence text, + @Nullable Alignment textAlignment, + float line, + @Cue.LineType int lineType, + @Cue.AnchorType int lineAnchor, + float position, + @Cue.AnchorType int positionAnchor, + float width) { + super(text, textAlignment, line, lineType, lineAnchor, position, positionAnchor, width); + this.startTime = startTime; + this.endTime = endTime; + } + + /** + * Returns whether or not this cue should be placed in the default position and rolled-up with + * the other "normal" cues. + * + * @return Whether this cue should be placed in the default position. + */ + public boolean isNormalCue() { + return (line == DIMEN_UNSET && position == DEFAULT_POSITION); + } + + /** Builder for WebVTT cues. */ + @SuppressWarnings("hiding") + public static class Builder { + + /** + * Valid values for {@link #setTextAlignment(int)}. + * + *

We use a custom list (and not {@link Alignment} directly) in order to include both {@code + * START}/{@code LEFT} and {@code END}/{@code RIGHT}. The distinction is important for {@link + * #derivePosition(int)}. + * + *

These correspond to the valid values for the 'align' cue setting in the WebVTT spec. + */ + @Documented + @Retention(SOURCE) + @IntDef({ + TEXT_ALIGNMENT_START, + TEXT_ALIGNMENT_CENTER, + TEXT_ALIGNMENT_END, + TEXT_ALIGNMENT_LEFT, + TEXT_ALIGNMENT_RIGHT + }) + public @interface TextAlignment {} + /** + * See WebVTT's align:start. + */ + public static final int TEXT_ALIGNMENT_START = 1; + + /** + * See WebVTT's align:center. + */ + public static final int TEXT_ALIGNMENT_CENTER = 2; + + /** + * See WebVTT's align:end. + */ + public static final int TEXT_ALIGNMENT_END = 3; + + /** + * See WebVTT's align:left. + */ + public static final int TEXT_ALIGNMENT_LEFT = 4; + + /** + * See WebVTT's align:right. + */ + public static final int TEXT_ALIGNMENT_RIGHT = 5; + + private static final String TAG = "WebvttCueBuilder"; + + private long startTime; + private long endTime; + @Nullable private CharSequence text; + @TextAlignment private int textAlignment; + private float line; + // Equivalent to WebVTT's snap-to-lines flag: + // https://www.w3.org/TR/webvtt1/#webvtt-cue-snap-to-lines-flag + @LineType private int lineType; + @AnchorType private int lineAnchor; + private float position; + @AnchorType private int positionAnchor; + private float width; + + // Initialization methods + + // Calling reset() is forbidden because `this` isn't initialized. This can be safely + // suppressed because reset() only assigns fields, it doesn't read any. + @SuppressWarnings("nullness:method.invocation.invalid") + public Builder() { + reset(); + } + + public void reset() { + startTime = 0; + endTime = 0; + text = null; + // Default: https://www.w3.org/TR/webvtt1/#webvtt-cue-text-alignment + textAlignment = TEXT_ALIGNMENT_CENTER; + line = Cue.DIMEN_UNSET; + // Defaults to NUMBER (true): https://www.w3.org/TR/webvtt1/#webvtt-cue-snap-to-lines-flag + lineType = Cue.LINE_TYPE_NUMBER; + // Default: https://www.w3.org/TR/webvtt1/#webvtt-cue-line-alignment + lineAnchor = Cue.ANCHOR_TYPE_START; + position = Cue.DIMEN_UNSET; + positionAnchor = Cue.TYPE_UNSET; + // Default: https://www.w3.org/TR/webvtt1/#webvtt-cue-size + width = 1.0f; + } + + // Construction methods. + + public WebvttCue build() { + line = computeLine(line, lineType); + + if (position == Cue.DIMEN_UNSET) { + position = derivePosition(textAlignment); + } + + if (positionAnchor == Cue.TYPE_UNSET) { + positionAnchor = derivePositionAnchor(textAlignment); + } + + width = Math.min(width, deriveMaxSize(positionAnchor, position)); + + return new WebvttCue( + startTime, + endTime, + Assertions.checkNotNull(text), + convertTextAlignment(textAlignment), + line, + lineType, + lineAnchor, + position, + positionAnchor, + width); + } + + public Builder setStartTime(long time) { + startTime = time; + return this; + } + + public Builder setEndTime(long time) { + endTime = time; + return this; + } + + public Builder setText(CharSequence text) { + this.text = text; + return this; + } + + public Builder setTextAlignment(@TextAlignment int textAlignment) { + this.textAlignment = textAlignment; + return this; + } + + public Builder setLine(float line) { + this.line = line; + return this; + } + + public Builder setLineType(@LineType int lineType) { + this.lineType = lineType; + return this; + } + + public Builder setLineAnchor(@AnchorType int lineAnchor) { + this.lineAnchor = lineAnchor; + return this; + } + + public Builder setPosition(float position) { + this.position = position; + return this; + } + + public Builder setPositionAnchor(@AnchorType int positionAnchor) { + this.positionAnchor = positionAnchor; + return this; + } + + public Builder setWidth(float width) { + this.width = width; + return this; + } + + // https://www.w3.org/TR/webvtt1/#webvtt-cue-line + private static float computeLine(float line, @LineType int lineType) { + if (line != Cue.DIMEN_UNSET + && lineType == Cue.LINE_TYPE_FRACTION + && (line < 0.0f || line > 1.0f)) { + return 1.0f; // Step 1 + } else if (line != Cue.DIMEN_UNSET) { + // Step 2: Do nothing, line is already correct. + return line; + } else if (lineType == Cue.LINE_TYPE_FRACTION) { + return 1.0f; // Step 3 + } else { + // Steps 4 - 10 (stacking multiple simultaneous cues) are handled by WebvttSubtitle#getCues + // and WebvttCue#isNormalCue. + return DIMEN_UNSET; + } + } + + // https://www.w3.org/TR/webvtt1/#webvtt-cue-position + private static float derivePosition(@TextAlignment int textAlignment) { + switch (textAlignment) { + case TEXT_ALIGNMENT_LEFT: + return 0.0f; + case TEXT_ALIGNMENT_RIGHT: + return 1.0f; + case TEXT_ALIGNMENT_START: + case TEXT_ALIGNMENT_CENTER: + case TEXT_ALIGNMENT_END: + default: + return DEFAULT_POSITION; + } + } + + // https://www.w3.org/TR/webvtt1/#webvtt-cue-position-alignment + @AnchorType + private static int derivePositionAnchor(@TextAlignment int textAlignment) { + switch (textAlignment) { + case TEXT_ALIGNMENT_LEFT: + case TEXT_ALIGNMENT_START: + return Cue.ANCHOR_TYPE_START; + case TEXT_ALIGNMENT_RIGHT: + case TEXT_ALIGNMENT_END: + return Cue.ANCHOR_TYPE_END; + case TEXT_ALIGNMENT_CENTER: + default: + return Cue.ANCHOR_TYPE_MIDDLE; + } + } + + @Nullable + private static Alignment convertTextAlignment(@TextAlignment int textAlignment) { + switch (textAlignment) { + case TEXT_ALIGNMENT_START: + case TEXT_ALIGNMENT_LEFT: + return Alignment.ALIGN_NORMAL; + case TEXT_ALIGNMENT_CENTER: + return Alignment.ALIGN_CENTER; + case TEXT_ALIGNMENT_END: + case TEXT_ALIGNMENT_RIGHT: + return Alignment.ALIGN_OPPOSITE; + default: + Log.w(TAG, "Unknown textAlignment: " + textAlignment); + return null; + } + } + + // Step 2 here: https://www.w3.org/TR/webvtt1/#processing-cue-settings + private static float deriveMaxSize(@AnchorType int positionAnchor, float position) { + switch (positionAnchor) { + case Cue.ANCHOR_TYPE_START: + return 1.0f - position; + case Cue.ANCHOR_TYPE_END: + return position; + case Cue.ANCHOR_TYPE_MIDDLE: + if (position <= 0.5f) { + return position * 2; + } else { + return (1.0f - position) * 2; + } + case Cue.TYPE_UNSET: + default: + throw new IllegalStateException(String.valueOf(positionAnchor)); + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttCueParser.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttCueParser.java new file mode 100644 index 0000000000..b370e67792 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttCueParser.java @@ -0,0 +1,550 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt; + +import android.graphics.Typeface; +import android.text.Layout; +import android.text.Spannable; +import android.text.SpannableStringBuilder; +import android.text.Spanned; +import android.text.TextUtils; +import android.text.style.AbsoluteSizeSpan; +import android.text.style.AlignmentSpan; +import android.text.style.BackgroundColorSpan; +import android.text.style.ForegroundColorSpan; +import android.text.style.RelativeSizeSpan; +import android.text.style.StrikethroughSpan; +import android.text.style.StyleSpan; +import android.text.style.TypefaceSpan; +import android.text.style.UnderlineSpan; +import androidx.annotation.NonNull; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayDeque; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** Parser for WebVTT cues. (https://w3c.github.io/webvtt/#cues) */ +public final class WebvttCueParser { + + public static final Pattern CUE_HEADER_PATTERN = Pattern + .compile("^(\\S+)\\s+-->\\s+(\\S+)(.*)?$"); + + private static final Pattern CUE_SETTING_PATTERN = Pattern.compile("(\\S+?):(\\S+)"); + + private static final char CHAR_LESS_THAN = '<'; + private static final char CHAR_GREATER_THAN = '>'; + private static final char CHAR_SLASH = '/'; + private static final char CHAR_AMPERSAND = '&'; + private static final char CHAR_SEMI_COLON = ';'; + private static final char CHAR_SPACE = ' '; + + private static final String ENTITY_LESS_THAN = "lt"; + private static final String ENTITY_GREATER_THAN = "gt"; + private static final String ENTITY_AMPERSAND = "amp"; + private static final String ENTITY_NON_BREAK_SPACE = "nbsp"; + + private static final String TAG_BOLD = "b"; + private static final String TAG_ITALIC = "i"; + private static final String TAG_UNDERLINE = "u"; + private static final String TAG_CLASS = "c"; + private static final String TAG_VOICE = "v"; + private static final String TAG_LANG = "lang"; + + private static final int STYLE_BOLD = Typeface.BOLD; + private static final int STYLE_ITALIC = Typeface.ITALIC; + + private static final String TAG = "WebvttCueParser"; + + private final StringBuilder textBuilder; + + public WebvttCueParser() { + textBuilder = new StringBuilder(); + } + + /** + * Parses the next valid WebVTT cue in a parsable array, including timestamps, settings and text. + * + * @param webvttData Parsable WebVTT file data. + * @param builder Builder for WebVTT Cues (output parameter). + * @param styles List of styles defined by the CSS style blocks preceding the cues. + * @return Whether a valid Cue was found. + */ + public boolean parseCue( + ParsableByteArray webvttData, WebvttCue.Builder builder, List styles) { + @Nullable String firstLine = webvttData.readLine(); + if (firstLine == null) { + return false; + } + Matcher cueHeaderMatcher = WebvttCueParser.CUE_HEADER_PATTERN.matcher(firstLine); + if (cueHeaderMatcher.matches()) { + // We have found the timestamps in the first line. No id present. + return parseCue(null, cueHeaderMatcher, webvttData, builder, textBuilder, styles); + } + // The first line is not the timestamps, but could be the cue id. + @Nullable String secondLine = webvttData.readLine(); + if (secondLine == null) { + return false; + } + cueHeaderMatcher = WebvttCueParser.CUE_HEADER_PATTERN.matcher(secondLine); + if (cueHeaderMatcher.matches()) { + // We can do the rest of the parsing, including the id. + return parseCue(firstLine.trim(), cueHeaderMatcher, webvttData, builder, textBuilder, + styles); + } + return false; + } + + /** + * Parses a string containing a list of cue settings. + * + * @param cueSettingsList String containing the settings for a given cue. + * @param builder The {@link WebvttCue.Builder} where incremental construction takes place. + */ + /* package */ static void parseCueSettingsList(String cueSettingsList, + WebvttCue.Builder builder) { + // Parse the cue settings list. + Matcher cueSettingMatcher = CUE_SETTING_PATTERN.matcher(cueSettingsList); + while (cueSettingMatcher.find()) { + String name = cueSettingMatcher.group(1); + String value = cueSettingMatcher.group(2); + try { + if ("line".equals(name)) { + parseLineAttribute(value, builder); + } else if ("align".equals(name)) { + builder.setTextAlignment(parseTextAlignment(value)); + } else if ("position".equals(name)) { + parsePositionAttribute(value, builder); + } else if ("size".equals(name)) { + builder.setWidth(WebvttParserUtil.parsePercentage(value)); + } else { + Log.w(TAG, "Unknown cue setting " + name + ":" + value); + } + } catch (NumberFormatException e) { + Log.w(TAG, "Skipping bad cue setting: " + cueSettingMatcher.group()); + } + } + } + + /** + * Parses the text payload of a WebVTT Cue and applies modifications on {@link WebvttCue.Builder}. + * + * @param id Id of the cue, {@code null} if it is not present. + * @param markup The markup text to be parsed. + * @param styles List of styles defined by the CSS style blocks preceding the cues. + * @param builder Output builder. + */ + /* package */ static void parseCueText( + @Nullable String id, String markup, WebvttCue.Builder builder, List styles) { + SpannableStringBuilder spannedText = new SpannableStringBuilder(); + ArrayDeque startTagStack = new ArrayDeque<>(); + List scratchStyleMatches = new ArrayList<>(); + int pos = 0; + while (pos < markup.length()) { + char curr = markup.charAt(pos); + switch (curr) { + case CHAR_LESS_THAN: + if (pos + 1 >= markup.length()) { + pos++; + break; // avoid ArrayOutOfBoundsException + } + int ltPos = pos; + boolean isClosingTag = markup.charAt(ltPos + 1) == CHAR_SLASH; + pos = findEndOfTag(markup, ltPos + 1); + boolean isVoidTag = markup.charAt(pos - 2) == CHAR_SLASH; + String fullTagExpression = markup.substring(ltPos + (isClosingTag ? 2 : 1), + isVoidTag ? pos - 2 : pos - 1); + if (fullTagExpression.trim().isEmpty()) { + continue; + } + String tagName = getTagName(fullTagExpression); + if (!isSupportedTag(tagName)) { + continue; + } + if (isClosingTag) { + StartTag startTag; + do { + if (startTagStack.isEmpty()) { + break; + } + startTag = startTagStack.pop(); + applySpansForTag(id, startTag, spannedText, styles, scratchStyleMatches); + } while(!startTag.name.equals(tagName)); + } else if (!isVoidTag) { + startTagStack.push(StartTag.buildStartTag(fullTagExpression, spannedText.length())); + } + break; + case CHAR_AMPERSAND: + int semiColonEndIndex = markup.indexOf(CHAR_SEMI_COLON, pos + 1); + int spaceEndIndex = markup.indexOf(CHAR_SPACE, pos + 1); + int entityEndIndex = semiColonEndIndex == -1 ? spaceEndIndex + : (spaceEndIndex == -1 ? semiColonEndIndex + : Math.min(semiColonEndIndex, spaceEndIndex)); + if (entityEndIndex != -1) { + applyEntity(markup.substring(pos + 1, entityEndIndex), spannedText); + if (entityEndIndex == spaceEndIndex) { + spannedText.append(" "); + } + pos = entityEndIndex + 1; + } else { + spannedText.append(curr); + pos++; + } + break; + default: + spannedText.append(curr); + pos++; + break; + } + } + // apply unclosed tags + while (!startTagStack.isEmpty()) { + applySpansForTag(id, startTagStack.pop(), spannedText, styles, scratchStyleMatches); + } + applySpansForTag(id, StartTag.buildWholeCueVirtualTag(), spannedText, styles, + scratchStyleMatches); + builder.setText(spannedText); + } + + private static boolean parseCue( + @Nullable String id, + Matcher cueHeaderMatcher, + ParsableByteArray webvttData, + WebvttCue.Builder builder, + StringBuilder textBuilder, + List styles) { + try { + // Parse the cue start and end times. + builder.setStartTime(WebvttParserUtil.parseTimestampUs(cueHeaderMatcher.group(1))) + .setEndTime(WebvttParserUtil.parseTimestampUs(cueHeaderMatcher.group(2))); + } catch (NumberFormatException e) { + Log.w(TAG, "Skipping cue with bad header: " + cueHeaderMatcher.group()); + return false; + } + + parseCueSettingsList(cueHeaderMatcher.group(3), builder); + + // Parse the cue text. + textBuilder.setLength(0); + for (String line = webvttData.readLine(); + !TextUtils.isEmpty(line); + line = webvttData.readLine()) { + if (textBuilder.length() > 0) { + textBuilder.append("\n"); + } + textBuilder.append(line.trim()); + } + parseCueText(id, textBuilder.toString(), builder, styles); + return true; + } + + // Internal methods + + private static void parseLineAttribute(String s, WebvttCue.Builder builder) { + int commaIndex = s.indexOf(','); + if (commaIndex != -1) { + builder.setLineAnchor(parsePositionAnchor(s.substring(commaIndex + 1))); + s = s.substring(0, commaIndex); + } + if (s.endsWith("%")) { + builder.setLine(WebvttParserUtil.parsePercentage(s)).setLineType(Cue.LINE_TYPE_FRACTION); + } else { + int lineNumber = Integer.parseInt(s); + if (lineNumber < 0) { + // WebVTT defines line -1 as last visible row when lineAnchor is ANCHOR_TYPE_START, where-as + // Cue defines it to be the first row that's not visible. + lineNumber--; + } + builder.setLine(lineNumber).setLineType(Cue.LINE_TYPE_NUMBER); + } + } + + private static void parsePositionAttribute(String s, WebvttCue.Builder builder) { + int commaIndex = s.indexOf(','); + if (commaIndex != -1) { + builder.setPositionAnchor(parsePositionAnchor(s.substring(commaIndex + 1))); + s = s.substring(0, commaIndex); + } + builder.setPosition(WebvttParserUtil.parsePercentage(s)); + } + + @Cue.AnchorType + private static int parsePositionAnchor(String s) { + switch (s) { + case "start": + return Cue.ANCHOR_TYPE_START; + case "center": + case "middle": + return Cue.ANCHOR_TYPE_MIDDLE; + case "end": + return Cue.ANCHOR_TYPE_END; + default: + Log.w(TAG, "Invalid anchor value: " + s); + return Cue.TYPE_UNSET; + } + } + + @WebvttCue.Builder.TextAlignment + private static int parseTextAlignment(String s) { + switch (s) { + case "start": + return WebvttCue.Builder.TEXT_ALIGNMENT_START; + case "left": + return WebvttCue.Builder.TEXT_ALIGNMENT_LEFT; + case "center": + case "middle": + return WebvttCue.Builder.TEXT_ALIGNMENT_CENTER; + case "end": + return WebvttCue.Builder.TEXT_ALIGNMENT_END; + case "right": + return WebvttCue.Builder.TEXT_ALIGNMENT_RIGHT; + default: + Log.w(TAG, "Invalid alignment value: " + s); + // Default value: https://www.w3.org/TR/webvtt1/#webvtt-cue-text-alignment + return WebvttCue.Builder.TEXT_ALIGNMENT_CENTER; + } + } + + /** + * Find end of tag (>). The position returned is the position of the > plus one (exclusive). + * + * @param markup The WebVTT cue markup to be parsed. + * @param startPos The position from where to start searching for the end of tag. + * @return The position of the end of tag plus 1 (one). + */ + private static int findEndOfTag(String markup, int startPos) { + int index = markup.indexOf(CHAR_GREATER_THAN, startPos); + return index == -1 ? markup.length() : index + 1; + } + + private static void applyEntity(String entity, SpannableStringBuilder spannedText) { + switch (entity) { + case ENTITY_LESS_THAN: + spannedText.append('<'); + break; + case ENTITY_GREATER_THAN: + spannedText.append('>'); + break; + case ENTITY_NON_BREAK_SPACE: + spannedText.append(' '); + break; + case ENTITY_AMPERSAND: + spannedText.append('&'); + break; + default: + Log.w(TAG, "ignoring unsupported entity: '&" + entity + ";'"); + break; + } + } + + private static boolean isSupportedTag(String tagName) { + switch (tagName) { + case TAG_BOLD: + case TAG_CLASS: + case TAG_ITALIC: + case TAG_LANG: + case TAG_UNDERLINE: + case TAG_VOICE: + return true; + default: + return false; + } + } + + private static void applySpansForTag( + @Nullable String cueId, + StartTag startTag, + SpannableStringBuilder text, + List styles, + List scratchStyleMatches) { + int start = startTag.position; + int end = text.length(); + switch(startTag.name) { + case TAG_BOLD: + text.setSpan(new StyleSpan(STYLE_BOLD), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + break; + case TAG_ITALIC: + text.setSpan(new StyleSpan(STYLE_ITALIC), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + break; + case TAG_UNDERLINE: + text.setSpan(new UnderlineSpan(), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + break; + case TAG_CLASS: + case TAG_LANG: + case TAG_VOICE: + case "": // Case of the "whole cue" virtual tag. + break; + default: + return; + } + scratchStyleMatches.clear(); + getApplicableStyles(styles, cueId, startTag, scratchStyleMatches); + int styleMatchesCount = scratchStyleMatches.size(); + for (int i = 0; i < styleMatchesCount; i++) { + applyStyleToText(text, scratchStyleMatches.get(i).style, start, end); + } + } + + private static void applyStyleToText(SpannableStringBuilder spannedText, WebvttCssStyle style, + int start, int end) { + if (style == null) { + return; + } + if (style.getStyle() != WebvttCssStyle.UNSPECIFIED) { + spannedText.setSpan(new StyleSpan(style.getStyle()), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.isLinethrough()) { + spannedText.setSpan(new StrikethroughSpan(), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.isUnderline()) { + spannedText.setSpan(new UnderlineSpan(), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.hasFontColor()) { + spannedText.setSpan(new ForegroundColorSpan(style.getFontColor()), start, end, + Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.hasBackgroundColor()) { + spannedText.setSpan(new BackgroundColorSpan(style.getBackgroundColor()), start, end, + Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); + } + if (style.getFontFamily() != null) { + spannedText.setSpan(new TypefaceSpan(style.getFontFamily()), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + Layout.Alignment textAlign = style.getTextAlign(); + if (textAlign != null) { + spannedText.setSpan( + new AlignmentSpan.Standard(textAlign), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + } + switch (style.getFontSizeUnit()) { + case WebvttCssStyle.FONT_SIZE_UNIT_PIXEL: + spannedText.setSpan(new AbsoluteSizeSpan((int) style.getFontSize(), true), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + break; + case WebvttCssStyle.FONT_SIZE_UNIT_EM: + spannedText.setSpan(new RelativeSizeSpan(style.getFontSize()), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + break; + case WebvttCssStyle.FONT_SIZE_UNIT_PERCENT: + spannedText.setSpan(new RelativeSizeSpan(style.getFontSize() / 100), start, end, + Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); + break; + case WebvttCssStyle.UNSPECIFIED: + // Do nothing. + break; + } + } + + /** + * Returns the tag name for the given tag contents. + * + * @param tagExpression Characters between &lt: and &gt; of a start or end tag. + * @return The name of tag. + */ + private static String getTagName(String tagExpression) { + tagExpression = tagExpression.trim(); + Assertions.checkArgument(!tagExpression.isEmpty()); + return Util.splitAtFirst(tagExpression, "[ \\.]")[0]; + } + + private static void getApplicableStyles( + List declaredStyles, + @Nullable String id, + StartTag tag, + List output) { + int styleCount = declaredStyles.size(); + for (int i = 0; i < styleCount; i++) { + WebvttCssStyle style = declaredStyles.get(i); + int score = style.getSpecificityScore(id, tag.name, tag.classes, tag.voice); + if (score > 0) { + output.add(new StyleMatch(score, style)); + } + } + Collections.sort(output); + } + + private static final class StyleMatch implements Comparable { + + public final int score; + public final WebvttCssStyle style; + + public StyleMatch(int score, WebvttCssStyle style) { + this.score = score; + this.style = style; + } + + @Override + public int compareTo(@NonNull StyleMatch another) { + return this.score - another.score; + } + + } + + private static final class StartTag { + + private static final String[] NO_CLASSES = new String[0]; + + public final String name; + public final int position; + public final String voice; + public final String[] classes; + + private StartTag(String name, int position, String voice, String[] classes) { + this.position = position; + this.name = name; + this.voice = voice; + this.classes = classes; + } + + public static StartTag buildStartTag(String fullTagExpression, int position) { + fullTagExpression = fullTagExpression.trim(); + Assertions.checkArgument(!fullTagExpression.isEmpty()); + int voiceStartIndex = fullTagExpression.indexOf(" "); + String voice; + if (voiceStartIndex == -1) { + voice = ""; + } else { + voice = fullTagExpression.substring(voiceStartIndex).trim(); + fullTagExpression = fullTagExpression.substring(0, voiceStartIndex); + } + String[] nameAndClasses = Util.split(fullTagExpression, "\\."); + String name = nameAndClasses[0]; + String[] classes; + if (nameAndClasses.length > 1) { + classes = Util.nullSafeArrayCopyOfRange(nameAndClasses, 1, nameAndClasses.length); + } else { + classes = NO_CLASSES; + } + return new StartTag(name, position, voice, classes); + } + + public static StartTag buildWholeCueVirtualTag() { + return new StartTag("", 0, "", new String[0]); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttDecoder.java new file mode 100644 index 0000000000..a70a49e82e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttDecoder.java @@ -0,0 +1,125 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt; + +import android.text.TextUtils; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SimpleSubtitleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.SubtitleDecoderException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.ArrayList; +import java.util.List; + +/** + * A {@link SimpleSubtitleDecoder} for WebVTT. + *

+ * @see WebVTT specification + */ +public final class WebvttDecoder extends SimpleSubtitleDecoder { + + private static final int EVENT_NONE = -1; + private static final int EVENT_END_OF_FILE = 0; + private static final int EVENT_COMMENT = 1; + private static final int EVENT_STYLE_BLOCK = 2; + private static final int EVENT_CUE = 3; + + private static final String COMMENT_START = "NOTE"; + private static final String STYLE_START = "STYLE"; + + private final WebvttCueParser cueParser; + private final ParsableByteArray parsableWebvttData; + private final WebvttCue.Builder webvttCueBuilder; + private final CssParser cssParser; + private final List definedStyles; + + public WebvttDecoder() { + super("WebvttDecoder"); + cueParser = new WebvttCueParser(); + parsableWebvttData = new ParsableByteArray(); + webvttCueBuilder = new WebvttCue.Builder(); + cssParser = new CssParser(); + definedStyles = new ArrayList<>(); + } + + @Override + protected Subtitle decode(byte[] bytes, int length, boolean reset) + throws SubtitleDecoderException { + parsableWebvttData.reset(bytes, length); + // Initialization for consistent starting state. + webvttCueBuilder.reset(); + definedStyles.clear(); + + // Validate the first line of the header, and skip the remainder. + try { + WebvttParserUtil.validateWebvttHeaderLine(parsableWebvttData); + } catch (ParserException e) { + throw new SubtitleDecoderException(e); + } + while (!TextUtils.isEmpty(parsableWebvttData.readLine())) {} + + int event; + ArrayList subtitles = new ArrayList<>(); + while ((event = getNextEvent(parsableWebvttData)) != EVENT_END_OF_FILE) { + if (event == EVENT_COMMENT) { + skipComment(parsableWebvttData); + } else if (event == EVENT_STYLE_BLOCK) { + if (!subtitles.isEmpty()) { + throw new SubtitleDecoderException("A style block was found after the first cue."); + } + parsableWebvttData.readLine(); // Consume the "STYLE" header. + definedStyles.addAll(cssParser.parseBlock(parsableWebvttData)); + } else if (event == EVENT_CUE) { + if (cueParser.parseCue(parsableWebvttData, webvttCueBuilder, definedStyles)) { + subtitles.add(webvttCueBuilder.build()); + webvttCueBuilder.reset(); + } + } + } + return new WebvttSubtitle(subtitles); + } + + /** + * Positions the input right before the next event, and returns the kind of event found. Does not + * consume any data from such event, if any. + * + * @return The kind of event found. + */ + private static int getNextEvent(ParsableByteArray parsableWebvttData) { + int foundEvent = EVENT_NONE; + int currentInputPosition = 0; + while (foundEvent == EVENT_NONE) { + currentInputPosition = parsableWebvttData.getPosition(); + String line = parsableWebvttData.readLine(); + if (line == null) { + foundEvent = EVENT_END_OF_FILE; + } else if (STYLE_START.equals(line)) { + foundEvent = EVENT_STYLE_BLOCK; + } else if (line.startsWith(COMMENT_START)) { + foundEvent = EVENT_COMMENT; + } else { + foundEvent = EVENT_CUE; + } + } + parsableWebvttData.setPosition(currentInputPosition); + return foundEvent; + } + + private static void skipComment(ParsableByteArray parsableWebvttData) { + while (!TextUtils.isEmpty(parsableWebvttData.readLine())) {} + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttParserUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttParserUtil.java new file mode 100644 index 0000000000..b87d014de0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttParserUtil.java @@ -0,0 +1,119 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** + * Utility methods for parsing WebVTT data. + */ +public final class WebvttParserUtil { + + private static final Pattern COMMENT = Pattern.compile("^NOTE([ \t].*)?$"); + private static final String WEBVTT_HEADER = "WEBVTT"; + + private WebvttParserUtil() {} + + /** + * Reads and validates the first line of a WebVTT file. + * + * @param input The input from which the line should be read. + * @throws ParserException If the line isn't the start of a valid WebVTT file. + */ + public static void validateWebvttHeaderLine(ParsableByteArray input) throws ParserException { + int startPosition = input.getPosition(); + if (!isWebvttHeaderLine(input)) { + input.setPosition(startPosition); + throw new ParserException("Expected WEBVTT. Got " + input.readLine()); + } + } + + /** + * Returns whether the given input is the first line of a WebVTT file. + * + * @param input The input from which the line should be read. + */ + public static boolean isWebvttHeaderLine(ParsableByteArray input) { + @Nullable String line = input.readLine(); + return line != null && line.startsWith(WEBVTT_HEADER); + } + + /** + * Parses a WebVTT timestamp. + * + * @param timestamp The timestamp string. + * @return The parsed timestamp in microseconds. + * @throws NumberFormatException If the timestamp could not be parsed. + */ + public static long parseTimestampUs(String timestamp) throws NumberFormatException { + long value = 0; + String[] parts = Util.splitAtFirst(timestamp, "\\."); + String[] subparts = Util.split(parts[0], ":"); + for (String subpart : subparts) { + value = (value * 60) + Long.parseLong(subpart); + } + value *= 1000; + if (parts.length == 2) { + value += Long.parseLong(parts[1]); + } + return value * 1000; + } + + /** + * Parses a percentage string. + * + * @param s The percentage string. + * @return The parsed value, where 1.0 represents 100%. + * @throws NumberFormatException If the percentage could not be parsed. + */ + public static float parsePercentage(String s) throws NumberFormatException { + if (!s.endsWith("%")) { + throw new NumberFormatException("Percentages must end with %"); + } + return Float.parseFloat(s.substring(0, s.length() - 1)) / 100; + } + + /** + * Reads lines up to and including the next WebVTT cue header. + * + * @param input The input from which lines should be read. + * @return A {@link Matcher} for the WebVTT cue header, or null if the end of the input was + * reached without a cue header being found. In the case that a cue header is found, groups 1, + * 2 and 3 of the returned matcher contain the start time, end time and settings list. + */ + @Nullable + public static Matcher findNextCueHeader(ParsableByteArray input) { + @Nullable String line; + while ((line = input.readLine()) != null) { + if (COMMENT.matcher(line).matches()) { + // Skip until the end of the comment block. + while ((line = input.readLine()) != null && !line.isEmpty()) {} + } else { + Matcher cueHeaderMatcher = WebvttCueParser.CUE_HEADER_PATTERN.matcher(line); + if (cueHeaderMatcher.matches()) { + return cueHeaderMatcher; + } + } + } + return null; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttSubtitle.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttSubtitle.java new file mode 100644 index 0000000000..558c699eba --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/WebvttSubtitle.java @@ -0,0 +1,115 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt; + +import android.text.SpannableStringBuilder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; + +/** + * A representation of a WebVTT subtitle. + */ +/* package */ final class WebvttSubtitle implements Subtitle { + + private final List cues; + private final int numCues; + private final long[] cueTimesUs; + private final long[] sortedCueTimesUs; + + /** + * @param cues A list of the cues in this subtitle. + */ + public WebvttSubtitle(List cues) { + this.cues = cues; + numCues = cues.size(); + cueTimesUs = new long[2 * numCues]; + for (int cueIndex = 0; cueIndex < numCues; cueIndex++) { + WebvttCue cue = cues.get(cueIndex); + int arrayIndex = cueIndex * 2; + cueTimesUs[arrayIndex] = cue.startTime; + cueTimesUs[arrayIndex + 1] = cue.endTime; + } + sortedCueTimesUs = Arrays.copyOf(cueTimesUs, cueTimesUs.length); + Arrays.sort(sortedCueTimesUs); + } + + @Override + public int getNextEventTimeIndex(long timeUs) { + int index = Util.binarySearchCeil(sortedCueTimesUs, timeUs, false, false); + return index < sortedCueTimesUs.length ? index : C.INDEX_UNSET; + } + + @Override + public int getEventTimeCount() { + return sortedCueTimesUs.length; + } + + @Override + public long getEventTime(int index) { + Assertions.checkArgument(index >= 0); + Assertions.checkArgument(index < sortedCueTimesUs.length); + return sortedCueTimesUs[index]; + } + + @Override + public List getCues(long timeUs) { + List list = new ArrayList<>(); + WebvttCue firstNormalCue = null; + SpannableStringBuilder normalCueTextBuilder = null; + + for (int i = 0; i < numCues; i++) { + if ((cueTimesUs[i * 2] <= timeUs) && (timeUs < cueTimesUs[i * 2 + 1])) { + WebvttCue cue = cues.get(i); + // TODO(ibaker): Replace this with a closer implementation of the WebVTT spec (keeping + // individual cues, but tweaking their `line` value): + // https://www.w3.org/TR/webvtt1/#cue-computed-line + if (cue.isNormalCue()) { + // we want to merge all of the normal cues into a single cue to ensure they are drawn + // correctly (i.e. don't overlap) and to emulate roll-up, but only if there are multiple + // normal cues, otherwise we can just append the single normal cue + if (firstNormalCue == null) { + firstNormalCue = cue; + } else if (normalCueTextBuilder == null) { + normalCueTextBuilder = new SpannableStringBuilder(); + normalCueTextBuilder + .append(Assertions.checkNotNull(firstNormalCue.text)) + .append("\n") + .append(Assertions.checkNotNull(cue.text)); + } else { + normalCueTextBuilder.append("\n").append(Assertions.checkNotNull(cue.text)); + } + } else { + list.add(cue); + } + } + } + if (normalCueTextBuilder != null) { + // there were multiple normal cues, so create a new cue with all of the text + list.add(new WebvttCue.Builder().setText(normalCueTextBuilder).build()); + } else if (firstNormalCue != null) { + // there was only a single normal cue, so just add it to the list + list.add(firstNormalCue); + } + return list; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/package-info.java new file mode 100644 index 0000000000..e2c014d539 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/text/webvtt/package-info.java @@ -0,0 +1,20 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.text.webvtt; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/AdaptiveTrackSelection.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/AdaptiveTrackSelection.java new file mode 100644 index 0000000000..33f8606e9b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/AdaptiveTrackSelection.java @@ -0,0 +1,761 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SimpleExoPlayer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunkIterator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Clock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.List; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * A bandwidth based adaptive {@link TrackSelection}, whose selected track is updated to be the one + * of highest quality given the current network conditions and the state of the buffer. + */ +public class AdaptiveTrackSelection extends BaseTrackSelection { + + /** Factory for {@link AdaptiveTrackSelection} instances. */ + public static class Factory implements TrackSelection.Factory { + + @Nullable private final BandwidthMeter bandwidthMeter; + private final int minDurationForQualityIncreaseMs; + private final int maxDurationForQualityDecreaseMs; + private final int minDurationToRetainAfterDiscardMs; + private final float bandwidthFraction; + private final float bufferedFractionToLiveEdgeForQualityIncrease; + private final long minTimeBetweenBufferReevaluationMs; + private final Clock clock; + + /** Creates an adaptive track selection factory with default parameters. */ + public Factory() { + this( + DEFAULT_MIN_DURATION_FOR_QUALITY_INCREASE_MS, + DEFAULT_MAX_DURATION_FOR_QUALITY_DECREASE_MS, + DEFAULT_MIN_DURATION_TO_RETAIN_AFTER_DISCARD_MS, + DEFAULT_BANDWIDTH_FRACTION, + DEFAULT_BUFFERED_FRACTION_TO_LIVE_EDGE_FOR_QUALITY_INCREASE, + DEFAULT_MIN_TIME_BETWEEN_BUFFER_REEVALUTATION_MS, + Clock.DEFAULT); + } + + /** + * @deprecated Use {@link #Factory()} instead. Custom bandwidth meter should be directly passed + * to the player in {@link SimpleExoPlayer.Builder}. + */ + @Deprecated + @SuppressWarnings("deprecation") + public Factory(BandwidthMeter bandwidthMeter) { + this( + bandwidthMeter, + DEFAULT_MIN_DURATION_FOR_QUALITY_INCREASE_MS, + DEFAULT_MAX_DURATION_FOR_QUALITY_DECREASE_MS, + DEFAULT_MIN_DURATION_TO_RETAIN_AFTER_DISCARD_MS, + DEFAULT_BANDWIDTH_FRACTION, + DEFAULT_BUFFERED_FRACTION_TO_LIVE_EDGE_FOR_QUALITY_INCREASE, + DEFAULT_MIN_TIME_BETWEEN_BUFFER_REEVALUTATION_MS, + Clock.DEFAULT); + } + + /** + * Creates an adaptive track selection factory. + * + * @param minDurationForQualityIncreaseMs The minimum duration of buffered data required for the + * selected track to switch to one of higher quality. + * @param maxDurationForQualityDecreaseMs The maximum duration of buffered data required for the + * selected track to switch to one of lower quality. + * @param minDurationToRetainAfterDiscardMs When switching to a track of significantly higher + * quality, the selection may indicate that media already buffered at the lower quality can + * be discarded to speed up the switch. This is the minimum duration of media that must be + * retained at the lower quality. + * @param bandwidthFraction The fraction of the available bandwidth that the selection should + * consider available for use. Setting to a value less than 1 is recommended to account for + * inaccuracies in the bandwidth estimator. + */ + public Factory( + int minDurationForQualityIncreaseMs, + int maxDurationForQualityDecreaseMs, + int minDurationToRetainAfterDiscardMs, + float bandwidthFraction) { + this( + minDurationForQualityIncreaseMs, + maxDurationForQualityDecreaseMs, + minDurationToRetainAfterDiscardMs, + bandwidthFraction, + DEFAULT_BUFFERED_FRACTION_TO_LIVE_EDGE_FOR_QUALITY_INCREASE, + DEFAULT_MIN_TIME_BETWEEN_BUFFER_REEVALUTATION_MS, + Clock.DEFAULT); + } + + /** + * @deprecated Use {@link #Factory(int, int, int, float)} instead. Custom bandwidth meter should + * be directly passed to the player in {@link SimpleExoPlayer.Builder}. + */ + @Deprecated + @SuppressWarnings("deprecation") + public Factory( + BandwidthMeter bandwidthMeter, + int minDurationForQualityIncreaseMs, + int maxDurationForQualityDecreaseMs, + int minDurationToRetainAfterDiscardMs, + float bandwidthFraction) { + this( + bandwidthMeter, + minDurationForQualityIncreaseMs, + maxDurationForQualityDecreaseMs, + minDurationToRetainAfterDiscardMs, + bandwidthFraction, + DEFAULT_BUFFERED_FRACTION_TO_LIVE_EDGE_FOR_QUALITY_INCREASE, + DEFAULT_MIN_TIME_BETWEEN_BUFFER_REEVALUTATION_MS, + Clock.DEFAULT); + } + + /** + * Creates an adaptive track selection factory. + * + * @param minDurationForQualityIncreaseMs The minimum duration of buffered data required for the + * selected track to switch to one of higher quality. + * @param maxDurationForQualityDecreaseMs The maximum duration of buffered data required for the + * selected track to switch to one of lower quality. + * @param minDurationToRetainAfterDiscardMs When switching to a track of significantly higher + * quality, the selection may indicate that media already buffered at the lower quality can + * be discarded to speed up the switch. This is the minimum duration of media that must be + * retained at the lower quality. + * @param bandwidthFraction The fraction of the available bandwidth that the selection should + * consider available for use. Setting to a value less than 1 is recommended to account for + * inaccuracies in the bandwidth estimator. + * @param bufferedFractionToLiveEdgeForQualityIncrease For live streaming, the fraction of the + * duration from current playback position to the live edge that has to be buffered before + * the selected track can be switched to one of higher quality. This parameter is only + * applied when the playback position is closer to the live edge than {@code + * minDurationForQualityIncreaseMs}, which would otherwise prevent switching to a higher + * quality from happening. + * @param minTimeBetweenBufferReevaluationMs The track selection may periodically reevaluate its + * buffer and discard some chunks of lower quality to improve the playback quality if + * network conditions have changed. This is the minimum duration between 2 consecutive + * buffer reevaluation calls. + * @param clock A {@link Clock}. + */ + @SuppressWarnings("deprecation") + public Factory( + int minDurationForQualityIncreaseMs, + int maxDurationForQualityDecreaseMs, + int minDurationToRetainAfterDiscardMs, + float bandwidthFraction, + float bufferedFractionToLiveEdgeForQualityIncrease, + long minTimeBetweenBufferReevaluationMs, + Clock clock) { + this( + /* bandwidthMeter= */ null, + minDurationForQualityIncreaseMs, + maxDurationForQualityDecreaseMs, + minDurationToRetainAfterDiscardMs, + bandwidthFraction, + bufferedFractionToLiveEdgeForQualityIncrease, + minTimeBetweenBufferReevaluationMs, + clock); + } + + /** + * @deprecated Use {@link #Factory(int, int, int, float, float, long, Clock)} instead. Custom + * bandwidth meter should be directly passed to the player in {@link + * SimpleExoPlayer.Builder}. + */ + @Deprecated + public Factory( + @Nullable BandwidthMeter bandwidthMeter, + int minDurationForQualityIncreaseMs, + int maxDurationForQualityDecreaseMs, + int minDurationToRetainAfterDiscardMs, + float bandwidthFraction, + float bufferedFractionToLiveEdgeForQualityIncrease, + long minTimeBetweenBufferReevaluationMs, + Clock clock) { + this.bandwidthMeter = bandwidthMeter; + this.minDurationForQualityIncreaseMs = minDurationForQualityIncreaseMs; + this.maxDurationForQualityDecreaseMs = maxDurationForQualityDecreaseMs; + this.minDurationToRetainAfterDiscardMs = minDurationToRetainAfterDiscardMs; + this.bandwidthFraction = bandwidthFraction; + this.bufferedFractionToLiveEdgeForQualityIncrease = + bufferedFractionToLiveEdgeForQualityIncrease; + this.minTimeBetweenBufferReevaluationMs = minTimeBetweenBufferReevaluationMs; + this.clock = clock; + } + + @Override + public final @NullableType TrackSelection[] createTrackSelections( + @NullableType Definition[] definitions, BandwidthMeter bandwidthMeter) { + if (this.bandwidthMeter != null) { + bandwidthMeter = this.bandwidthMeter; + } + TrackSelection[] selections = new TrackSelection[definitions.length]; + int totalFixedBandwidth = 0; + for (int i = 0; i < definitions.length; i++) { + Definition definition = definitions[i]; + if (definition != null && definition.tracks.length == 1) { + // Make fixed selections first to know their total bandwidth. + selections[i] = + new FixedTrackSelection( + definition.group, definition.tracks[0], definition.reason, definition.data); + int trackBitrate = definition.group.getFormat(definition.tracks[0]).bitrate; + if (trackBitrate != Format.NO_VALUE) { + totalFixedBandwidth += trackBitrate; + } + } + } + List adaptiveSelections = new ArrayList<>(); + for (int i = 0; i < definitions.length; i++) { + Definition definition = definitions[i]; + if (definition != null && definition.tracks.length > 1) { + AdaptiveTrackSelection adaptiveSelection = + createAdaptiveTrackSelection( + definition.group, bandwidthMeter, definition.tracks, totalFixedBandwidth); + adaptiveSelections.add(adaptiveSelection); + selections[i] = adaptiveSelection; + } + } + if (adaptiveSelections.size() > 1) { + long[][] adaptiveTrackBitrates = new long[adaptiveSelections.size()][]; + for (int i = 0; i < adaptiveSelections.size(); i++) { + AdaptiveTrackSelection adaptiveSelection = adaptiveSelections.get(i); + adaptiveTrackBitrates[i] = new long[adaptiveSelection.length()]; + for (int j = 0; j < adaptiveSelection.length(); j++) { + adaptiveTrackBitrates[i][j] = + adaptiveSelection.getFormat(adaptiveSelection.length() - j - 1).bitrate; + } + } + long[][][] bandwidthCheckpoints = getAllocationCheckpoints(adaptiveTrackBitrates); + for (int i = 0; i < adaptiveSelections.size(); i++) { + adaptiveSelections + .get(i) + .experimental_setBandwidthAllocationCheckpoints(bandwidthCheckpoints[i]); + } + } + return selections; + } + + /** + * Creates a single adaptive selection for the given group, bandwidth meter and tracks. + * + * @param group The {@link TrackGroup}. + * @param bandwidthMeter A {@link BandwidthMeter} which can be used to select tracks. + * @param tracks The indices of the selected tracks in the track group. + * @param totalFixedTrackBandwidth The total bandwidth used by all non-adaptive tracks, in bits + * per second. + * @return An {@link AdaptiveTrackSelection} for the specified tracks. + */ + protected AdaptiveTrackSelection createAdaptiveTrackSelection( + TrackGroup group, + BandwidthMeter bandwidthMeter, + int[] tracks, + int totalFixedTrackBandwidth) { + return new AdaptiveTrackSelection( + group, + tracks, + new DefaultBandwidthProvider(bandwidthMeter, bandwidthFraction, totalFixedTrackBandwidth), + minDurationForQualityIncreaseMs, + maxDurationForQualityDecreaseMs, + minDurationToRetainAfterDiscardMs, + bufferedFractionToLiveEdgeForQualityIncrease, + minTimeBetweenBufferReevaluationMs, + clock); + } + } + + public static final int DEFAULT_MIN_DURATION_FOR_QUALITY_INCREASE_MS = 10000; + public static final int DEFAULT_MAX_DURATION_FOR_QUALITY_DECREASE_MS = 25000; + public static final int DEFAULT_MIN_DURATION_TO_RETAIN_AFTER_DISCARD_MS = 25000; + public static final float DEFAULT_BANDWIDTH_FRACTION = 0.7f; + public static final float DEFAULT_BUFFERED_FRACTION_TO_LIVE_EDGE_FOR_QUALITY_INCREASE = 0.75f; + public static final long DEFAULT_MIN_TIME_BETWEEN_BUFFER_REEVALUTATION_MS = 2000; + + private final BandwidthProvider bandwidthProvider; + private final long minDurationForQualityIncreaseUs; + private final long maxDurationForQualityDecreaseUs; + private final long minDurationToRetainAfterDiscardUs; + private final float bufferedFractionToLiveEdgeForQualityIncrease; + private final long minTimeBetweenBufferReevaluationMs; + private final Clock clock; + + private float playbackSpeed; + private int selectedIndex; + private int reason; + private long lastBufferEvaluationMs; + + /** + * @param group The {@link TrackGroup}. + * @param tracks The indices of the selected tracks within the {@link TrackGroup}. Must not be + * empty. May be in any order. + * @param bandwidthMeter Provides an estimate of the currently available bandwidth. + */ + public AdaptiveTrackSelection(TrackGroup group, int[] tracks, + BandwidthMeter bandwidthMeter) { + this( + group, + tracks, + bandwidthMeter, + /* reservedBandwidth= */ 0, + DEFAULT_MIN_DURATION_FOR_QUALITY_INCREASE_MS, + DEFAULT_MAX_DURATION_FOR_QUALITY_DECREASE_MS, + DEFAULT_MIN_DURATION_TO_RETAIN_AFTER_DISCARD_MS, + DEFAULT_BANDWIDTH_FRACTION, + DEFAULT_BUFFERED_FRACTION_TO_LIVE_EDGE_FOR_QUALITY_INCREASE, + DEFAULT_MIN_TIME_BETWEEN_BUFFER_REEVALUTATION_MS, + Clock.DEFAULT); + } + + /** + * @param group The {@link TrackGroup}. + * @param tracks The indices of the selected tracks within the {@link TrackGroup}. Must not be + * empty. May be in any order. + * @param bandwidthMeter Provides an estimate of the currently available bandwidth. + * @param reservedBandwidth The reserved bandwidth, which shouldn't be considered available for + * use, in bits per second. + * @param minDurationForQualityIncreaseMs The minimum duration of buffered data required for the + * selected track to switch to one of higher quality. + * @param maxDurationForQualityDecreaseMs The maximum duration of buffered data required for the + * selected track to switch to one of lower quality. + * @param minDurationToRetainAfterDiscardMs When switching to a track of significantly higher + * quality, the selection may indicate that media already buffered at the lower quality can be + * discarded to speed up the switch. This is the minimum duration of media that must be + * retained at the lower quality. + * @param bandwidthFraction The fraction of the available bandwidth that the selection should + * consider available for use. Setting to a value less than 1 is recommended to account for + * inaccuracies in the bandwidth estimator. + * @param bufferedFractionToLiveEdgeForQualityIncrease For live streaming, the fraction of the + * duration from current playback position to the live edge that has to be buffered before the + * selected track can be switched to one of higher quality. This parameter is only applied + * when the playback position is closer to the live edge than {@code + * minDurationForQualityIncreaseMs}, which would otherwise prevent switching to a higher + * quality from happening. + * @param minTimeBetweenBufferReevaluationMs The track selection may periodically reevaluate its + * buffer and discard some chunks of lower quality to improve the playback quality if network + * condition has changed. This is the minimum duration between 2 consecutive buffer + * reevaluation calls. + */ + public AdaptiveTrackSelection( + TrackGroup group, + int[] tracks, + BandwidthMeter bandwidthMeter, + long reservedBandwidth, + long minDurationForQualityIncreaseMs, + long maxDurationForQualityDecreaseMs, + long minDurationToRetainAfterDiscardMs, + float bandwidthFraction, + float bufferedFractionToLiveEdgeForQualityIncrease, + long minTimeBetweenBufferReevaluationMs, + Clock clock) { + this( + group, + tracks, + new DefaultBandwidthProvider(bandwidthMeter, bandwidthFraction, reservedBandwidth), + minDurationForQualityIncreaseMs, + maxDurationForQualityDecreaseMs, + minDurationToRetainAfterDiscardMs, + bufferedFractionToLiveEdgeForQualityIncrease, + minTimeBetweenBufferReevaluationMs, + clock); + } + + private AdaptiveTrackSelection( + TrackGroup group, + int[] tracks, + BandwidthProvider bandwidthProvider, + long minDurationForQualityIncreaseMs, + long maxDurationForQualityDecreaseMs, + long minDurationToRetainAfterDiscardMs, + float bufferedFractionToLiveEdgeForQualityIncrease, + long minTimeBetweenBufferReevaluationMs, + Clock clock) { + super(group, tracks); + this.bandwidthProvider = bandwidthProvider; + this.minDurationForQualityIncreaseUs = minDurationForQualityIncreaseMs * 1000L; + this.maxDurationForQualityDecreaseUs = maxDurationForQualityDecreaseMs * 1000L; + this.minDurationToRetainAfterDiscardUs = minDurationToRetainAfterDiscardMs * 1000L; + this.bufferedFractionToLiveEdgeForQualityIncrease = + bufferedFractionToLiveEdgeForQualityIncrease; + this.minTimeBetweenBufferReevaluationMs = minTimeBetweenBufferReevaluationMs; + this.clock = clock; + playbackSpeed = 1f; + reason = C.SELECTION_REASON_UNKNOWN; + lastBufferEvaluationMs = C.TIME_UNSET; + } + + /** + * Sets checkpoints to determine the allocation bandwidth based on the total bandwidth. + * + * @param allocationCheckpoints List of checkpoints. Each element must be a long[2], with [0] + * being the total bandwidth and [1] being the allocated bandwidth. + */ + public void experimental_setBandwidthAllocationCheckpoints(long[][] allocationCheckpoints) { + ((DefaultBandwidthProvider) bandwidthProvider) + .experimental_setBandwidthAllocationCheckpoints(allocationCheckpoints); + } + + @Override + public void enable() { + lastBufferEvaluationMs = C.TIME_UNSET; + } + + @Override + public void onPlaybackSpeed(float playbackSpeed) { + this.playbackSpeed = playbackSpeed; + } + + @Override + public void updateSelectedTrack( + long playbackPositionUs, + long bufferedDurationUs, + long availableDurationUs, + List queue, + MediaChunkIterator[] mediaChunkIterators) { + long nowMs = clock.elapsedRealtime(); + + // Make initial selection + if (reason == C.SELECTION_REASON_UNKNOWN) { + reason = C.SELECTION_REASON_INITIAL; + selectedIndex = determineIdealSelectedIndex(nowMs); + return; + } + + // Stash the current selection, then make a new one. + int currentSelectedIndex = selectedIndex; + selectedIndex = determineIdealSelectedIndex(nowMs); + if (selectedIndex == currentSelectedIndex) { + return; + } + + if (!isBlacklisted(currentSelectedIndex, nowMs)) { + // Revert back to the current selection if conditions are not suitable for switching. + Format currentFormat = getFormat(currentSelectedIndex); + Format selectedFormat = getFormat(selectedIndex); + if (selectedFormat.bitrate > currentFormat.bitrate + && bufferedDurationUs < minDurationForQualityIncreaseUs(availableDurationUs)) { + // The selected track is a higher quality, but we have insufficient buffer to safely switch + // up. Defer switching up for now. + selectedIndex = currentSelectedIndex; + } else if (selectedFormat.bitrate < currentFormat.bitrate + && bufferedDurationUs >= maxDurationForQualityDecreaseUs) { + // The selected track is a lower quality, but we have sufficient buffer to defer switching + // down for now. + selectedIndex = currentSelectedIndex; + } + } + // If we adapted, update the trigger. + if (selectedIndex != currentSelectedIndex) { + reason = C.SELECTION_REASON_ADAPTIVE; + } + } + + @Override + public int getSelectedIndex() { + return selectedIndex; + } + + @Override + public int getSelectionReason() { + return reason; + } + + @Override + @Nullable + public Object getSelectionData() { + return null; + } + + @Override + public int evaluateQueueSize(long playbackPositionUs, List queue) { + long nowMs = clock.elapsedRealtime(); + if (!shouldEvaluateQueueSize(nowMs)) { + return queue.size(); + } + + lastBufferEvaluationMs = nowMs; + if (queue.isEmpty()) { + return 0; + } + + int queueSize = queue.size(); + MediaChunk lastChunk = queue.get(queueSize - 1); + long playoutBufferedDurationBeforeLastChunkUs = + Util.getPlayoutDurationForMediaDuration( + lastChunk.startTimeUs - playbackPositionUs, playbackSpeed); + long minDurationToRetainAfterDiscardUs = getMinDurationToRetainAfterDiscardUs(); + if (playoutBufferedDurationBeforeLastChunkUs < minDurationToRetainAfterDiscardUs) { + return queueSize; + } + int idealSelectedIndex = determineIdealSelectedIndex(nowMs); + Format idealFormat = getFormat(idealSelectedIndex); + // If the chunks contain video, discard from the first SD chunk beyond + // minDurationToRetainAfterDiscardUs whose resolution and bitrate are both lower than the ideal + // track. + for (int i = 0; i < queueSize; i++) { + MediaChunk chunk = queue.get(i); + Format format = chunk.trackFormat; + long mediaDurationBeforeThisChunkUs = chunk.startTimeUs - playbackPositionUs; + long playoutDurationBeforeThisChunkUs = + Util.getPlayoutDurationForMediaDuration(mediaDurationBeforeThisChunkUs, playbackSpeed); + if (playoutDurationBeforeThisChunkUs >= minDurationToRetainAfterDiscardUs + && format.bitrate < idealFormat.bitrate + && format.height != Format.NO_VALUE && format.height < 720 + && format.width != Format.NO_VALUE && format.width < 1280 + && format.height < idealFormat.height) { + return i; + } + } + return queueSize; + } + + /** + * Called when updating the selected track to determine whether a candidate track can be selected. + * + * @param format The {@link Format} of the candidate track. + * @param trackBitrate The estimated bitrate of the track. May differ from {@link Format#bitrate} + * if a more accurate estimate of the current track bitrate is available. + * @param playbackSpeed The current playback speed. + * @param effectiveBitrate The bitrate available to this selection. + * @return Whether this {@link Format} can be selected. + */ + @SuppressWarnings("unused") + protected boolean canSelectFormat( + Format format, int trackBitrate, float playbackSpeed, long effectiveBitrate) { + return Math.round(trackBitrate * playbackSpeed) <= effectiveBitrate; + } + + /** + * Called from {@link #evaluateQueueSize(long, List)} to determine whether an evaluation should be + * performed. + * + * @param nowMs The current value of {@link Clock#elapsedRealtime()}. + * @return Whether an evaluation should be performed. + */ + protected boolean shouldEvaluateQueueSize(long nowMs) { + return lastBufferEvaluationMs == C.TIME_UNSET + || nowMs - lastBufferEvaluationMs >= minTimeBetweenBufferReevaluationMs; + } + + /** + * Called from {@link #evaluateQueueSize(long, List)} to determine the minimum duration of buffer + * to retain after discarding chunks. + * + * @return The minimum duration of buffer to retain after discarding chunks, in microseconds. + */ + protected long getMinDurationToRetainAfterDiscardUs() { + return minDurationToRetainAfterDiscardUs; + } + + /** + * Computes the ideal selected index ignoring buffer health. + * + * @param nowMs The current time in the timebase of {@link Clock#elapsedRealtime()}, or {@link + * Long#MIN_VALUE} to ignore blacklisting. + */ + private int determineIdealSelectedIndex(long nowMs) { + long effectiveBitrate = bandwidthProvider.getAllocatedBandwidth(); + int lowestBitrateNonBlacklistedIndex = 0; + for (int i = 0; i < length; i++) { + if (nowMs == Long.MIN_VALUE || !isBlacklisted(i, nowMs)) { + Format format = getFormat(i); + if (canSelectFormat(format, format.bitrate, playbackSpeed, effectiveBitrate)) { + return i; + } else { + lowestBitrateNonBlacklistedIndex = i; + } + } + } + return lowestBitrateNonBlacklistedIndex; + } + + private long minDurationForQualityIncreaseUs(long availableDurationUs) { + boolean isAvailableDurationTooShort = availableDurationUs != C.TIME_UNSET + && availableDurationUs <= minDurationForQualityIncreaseUs; + return isAvailableDurationTooShort + ? (long) (availableDurationUs * bufferedFractionToLiveEdgeForQualityIncrease) + : minDurationForQualityIncreaseUs; + } + + /** Provides the allocated bandwidth. */ + private interface BandwidthProvider { + + /** Returns the allocated bitrate. */ + long getAllocatedBandwidth(); + } + + private static final class DefaultBandwidthProvider implements BandwidthProvider { + + private final BandwidthMeter bandwidthMeter; + private final float bandwidthFraction; + private final long reservedBandwidth; + + @Nullable private long[][] allocationCheckpoints; + + /* package */ + // the constructor does not initialize fields: allocationCheckpoints + @SuppressWarnings("nullness:initialization.fields.uninitialized") + DefaultBandwidthProvider( + BandwidthMeter bandwidthMeter, float bandwidthFraction, long reservedBandwidth) { + this.bandwidthMeter = bandwidthMeter; + this.bandwidthFraction = bandwidthFraction; + this.reservedBandwidth = reservedBandwidth; + } + + // unboxing a possibly-null reference allocationCheckpoints[nextIndex][0] + @SuppressWarnings("nullness:unboxing.of.nullable") + @Override + public long getAllocatedBandwidth() { + long totalBandwidth = (long) (bandwidthMeter.getBitrateEstimate() * bandwidthFraction); + long allocatableBandwidth = Math.max(0L, totalBandwidth - reservedBandwidth); + if (allocationCheckpoints == null) { + return allocatableBandwidth; + } + int nextIndex = 1; + while (nextIndex < allocationCheckpoints.length - 1 + && allocationCheckpoints[nextIndex][0] < allocatableBandwidth) { + nextIndex++; + } + long[] previous = allocationCheckpoints[nextIndex - 1]; + long[] next = allocationCheckpoints[nextIndex]; + float fractionBetweenCheckpoints = + (float) (allocatableBandwidth - previous[0]) / (next[0] - previous[0]); + return previous[1] + (long) (fractionBetweenCheckpoints * (next[1] - previous[1])); + } + + /* package */ void experimental_setBandwidthAllocationCheckpoints( + long[][] allocationCheckpoints) { + Assertions.checkArgument(allocationCheckpoints.length >= 2); + this.allocationCheckpoints = allocationCheckpoints; + } + } + + /** + * Returns allocation checkpoints for allocating bandwidth between multiple adaptive track + * selections. + * + * @param trackBitrates Array of [selectionIndex][trackIndex] -> trackBitrate. + * @return Array of allocation checkpoints [selectionIndex][checkpointIndex][2] with [0]=total + * bandwidth at checkpoint and [1]=allocated bandwidth at checkpoint. + */ + private static long[][][] getAllocationCheckpoints(long[][] trackBitrates) { + // Algorithm: + // 1. Use log bitrates to treat all resolution update steps equally. + // 2. Distribute switch points for each selection equally in the same [0.0-1.0] range. + // 3. Switch up one format at a time in the order of the switch points. + double[][] logBitrates = getLogArrayValues(trackBitrates); + double[][] switchPoints = getSwitchPoints(logBitrates); + + // There will be (count(switch point) + 3) checkpoints: + // [0] = all zero, [1] = minimum bitrates, [2-(end-1)] = up-switch points, + // [end] = extra point to set slope for additional bitrate. + int checkpointCount = countArrayElements(switchPoints) + 3; + long[][][] checkpoints = new long[logBitrates.length][checkpointCount][2]; + int[] currentSelection = new int[logBitrates.length]; + setCheckpointValues(checkpoints, /* checkpointIndex= */ 1, trackBitrates, currentSelection); + for (int checkpointIndex = 2; checkpointIndex < checkpointCount - 1; checkpointIndex++) { + int nextUpdateIndex = 0; + double nextUpdateSwitchPoint = Double.MAX_VALUE; + for (int i = 0; i < logBitrates.length; i++) { + if (currentSelection[i] + 1 == logBitrates[i].length) { + continue; + } + double switchPoint = switchPoints[i][currentSelection[i]]; + if (switchPoint < nextUpdateSwitchPoint) { + nextUpdateSwitchPoint = switchPoint; + nextUpdateIndex = i; + } + } + currentSelection[nextUpdateIndex]++; + setCheckpointValues(checkpoints, checkpointIndex, trackBitrates, currentSelection); + } + for (long[][] points : checkpoints) { + points[checkpointCount - 1][0] = 2 * points[checkpointCount - 2][0]; + points[checkpointCount - 1][1] = 2 * points[checkpointCount - 2][1]; + } + return checkpoints; + } + + /** Converts all input values to Math.log(value). */ + private static double[][] getLogArrayValues(long[][] values) { + double[][] logValues = new double[values.length][]; + for (int i = 0; i < values.length; i++) { + logValues[i] = new double[values[i].length]; + for (int j = 0; j < values[i].length; j++) { + logValues[i][j] = values[i][j] == Format.NO_VALUE ? 0 : Math.log(values[i][j]); + } + } + return logValues; + } + + /** + * Returns idealized switch points for each switch between consecutive track selection bitrates. + * + * @param logBitrates Log bitrates with [selectionCount][formatCount]. + * @return Linearly distributed switch points in the range of [0.0-1.0]. + */ + private static double[][] getSwitchPoints(double[][] logBitrates) { + double[][] switchPoints = new double[logBitrates.length][]; + for (int i = 0; i < logBitrates.length; i++) { + switchPoints[i] = new double[logBitrates[i].length - 1]; + if (switchPoints[i].length == 0) { + continue; + } + double totalBitrateDiff = logBitrates[i][logBitrates[i].length - 1] - logBitrates[i][0]; + for (int j = 0; j < logBitrates[i].length - 1; j++) { + double switchBitrate = 0.5 * (logBitrates[i][j] + logBitrates[i][j + 1]); + switchPoints[i][j] = + totalBitrateDiff == 0.0 ? 1.0 : (switchBitrate - logBitrates[i][0]) / totalBitrateDiff; + } + } + return switchPoints; + } + + /** Returns total number of elements in a 2D array. */ + private static int countArrayElements(double[][] array) { + int count = 0; + for (double[] subArray : array) { + count += subArray.length; + } + return count; + } + + /** + * Sets checkpoint bitrates. + * + * @param checkpoints Output checkpoints with [selectionIndex][checkpointIndex][2] where [0]=Total + * bitrate and [1]=Allocated bitrate. + * @param checkpointIndex The checkpoint index. + * @param trackBitrates The track bitrates with [selectionIndex][trackIndex]. + * @param selectedTracks The indices of selected tracks for each selection for this checkpoint. + */ + private static void setCheckpointValues( + long[][][] checkpoints, int checkpointIndex, long[][] trackBitrates, int[] selectedTracks) { + long totalBitrate = 0; + for (int i = 0; i < checkpoints.length; i++) { + checkpoints[i][checkpointIndex][1] = trackBitrates[i][selectedTracks[i]]; + totalBitrate += checkpoints[i][checkpointIndex][1]; + } + for (long[][] points : checkpoints) { + points[checkpointIndex][0] = totalBitrate; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/BaseTrackSelection.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/BaseTrackSelection.java new file mode 100644 index 0000000000..d7e94cb561 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/BaseTrackSelection.java @@ -0,0 +1,217 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import android.os.SystemClock; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; +import java.util.Comparator; +import java.util.List; + +/** + * An abstract base class suitable for most {@link TrackSelection} implementations. + */ +public abstract class BaseTrackSelection implements TrackSelection { + + /** + * The selected {@link TrackGroup}. + */ + protected final TrackGroup group; + /** + * The number of selected tracks within the {@link TrackGroup}. Always greater than zero. + */ + protected final int length; + /** + * The indices of the selected tracks in {@link #group}, in order of decreasing bandwidth. + */ + protected final int[] tracks; + + /** + * The {@link Format}s of the selected tracks, in order of decreasing bandwidth. + */ + private final Format[] formats; + /** + * Selected track blacklist timestamps, in order of decreasing bandwidth. + */ + private final long[] blacklistUntilTimes; + + // Lazily initialized hashcode. + private int hashCode; + + /** + * @param group The {@link TrackGroup}. Must not be null. + * @param tracks The indices of the selected tracks within the {@link TrackGroup}. Must not be + * null or empty. May be in any order. + */ + public BaseTrackSelection(TrackGroup group, int... tracks) { + Assertions.checkState(tracks.length > 0); + this.group = Assertions.checkNotNull(group); + this.length = tracks.length; + // Set the formats, sorted in order of decreasing bandwidth. + formats = new Format[length]; + for (int i = 0; i < tracks.length; i++) { + formats[i] = group.getFormat(tracks[i]); + } + Arrays.sort(formats, new DecreasingBandwidthComparator()); + // Set the format indices in the same order. + this.tracks = new int[length]; + for (int i = 0; i < length; i++) { + this.tracks[i] = group.indexOf(formats[i]); + } + blacklistUntilTimes = new long[length]; + } + + @Override + public void enable() { + // Do nothing. + } + + @Override + public void disable() { + // Do nothing. + } + + @Override + public final TrackGroup getTrackGroup() { + return group; + } + + @Override + public final int length() { + return tracks.length; + } + + @Override + public final Format getFormat(int index) { + return formats[index]; + } + + @Override + public final int getIndexInTrackGroup(int index) { + return tracks[index]; + } + + @Override + @SuppressWarnings("ReferenceEquality") + public final int indexOf(Format format) { + for (int i = 0; i < length; i++) { + if (formats[i] == format) { + return i; + } + } + return C.INDEX_UNSET; + } + + @Override + public final int indexOf(int indexInTrackGroup) { + for (int i = 0; i < length; i++) { + if (tracks[i] == indexInTrackGroup) { + return i; + } + } + return C.INDEX_UNSET; + } + + @Override + public final Format getSelectedFormat() { + return formats[getSelectedIndex()]; + } + + @Override + public final int getSelectedIndexInTrackGroup() { + return tracks[getSelectedIndex()]; + } + + @Override + public void onPlaybackSpeed(float playbackSpeed) { + // Do nothing. + } + + @Override + public int evaluateQueueSize(long playbackPositionUs, List queue) { + return queue.size(); + } + + @Override + public final boolean blacklist(int index, long blacklistDurationMs) { + long nowMs = SystemClock.elapsedRealtime(); + boolean canBlacklist = isBlacklisted(index, nowMs); + for (int i = 0; i < length && !canBlacklist; i++) { + canBlacklist = i != index && !isBlacklisted(i, nowMs); + } + if (!canBlacklist) { + return false; + } + blacklistUntilTimes[index] = + Math.max( + blacklistUntilTimes[index], + Util.addWithOverflowDefault(nowMs, blacklistDurationMs, Long.MAX_VALUE)); + return true; + } + + /** + * Returns whether the track at the specified index in the selection is blacklisted. + * + * @param index The index of the track in the selection. + * @param nowMs The current time in the timebase of {@link SystemClock#elapsedRealtime()}. + */ + protected final boolean isBlacklisted(int index, long nowMs) { + return blacklistUntilTimes[index] > nowMs; + } + + // Object overrides. + + @Override + public int hashCode() { + if (hashCode == 0) { + hashCode = 31 * System.identityHashCode(group) + Arrays.hashCode(tracks); + } + return hashCode; + } + + // Track groups are compared by identity not value, as distinct groups may have the same value. + @Override + @SuppressWarnings({"ReferenceEquality", "EqualsGetClass"}) + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + BaseTrackSelection other = (BaseTrackSelection) obj; + return group == other.group && Arrays.equals(tracks, other.tracks); + } + + /** + * Sorts {@link Format} objects in order of decreasing bandwidth. + */ + private static final class DecreasingBandwidthComparator implements Comparator { + + @Override + public int compare(Format a, Format b) { + return b.bitrate - a.bitrate; + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/BufferSizeAdaptationBuilder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/BufferSizeAdaptationBuilder.java new file mode 100644 index 0000000000..735889bfaa --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/BufferSizeAdaptationBuilder.java @@ -0,0 +1,494 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.DefaultLoadControl; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.LoadControl; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunkIterator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection.Definition; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DefaultAllocator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Clock; +import java.util.List; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * Builder for a {@link TrackSelection.Factory} and {@link LoadControl} that implement buffer size + * based track adaptation. + */ +public final class BufferSizeAdaptationBuilder { + + /** Dynamic filter for formats, which is applied when selecting a new track. */ + public interface DynamicFormatFilter { + + /** Filter which allows all formats. */ + DynamicFormatFilter NO_FILTER = (format, trackBitrate, isInitialSelection) -> true; + + /** + * Called when updating the selected track to determine whether a candidate track is allowed. If + * no format is allowed or eligible, the lowest quality format will be used. + * + * @param format The {@link Format} of the candidate track. + * @param trackBitrate The estimated bitrate of the track. May differ from {@link + * Format#bitrate} if a more accurate estimate of the current track bitrate is available. + * @param isInitialSelection Whether this is for the initial track selection. + */ + boolean isFormatAllowed(Format format, int trackBitrate, boolean isInitialSelection); + } + + /** + * The default minimum duration of media that the player will attempt to ensure is buffered at all + * times, in milliseconds. + */ + public static final int DEFAULT_MIN_BUFFER_MS = 15000; + + /** + * The default maximum duration of media that the player will attempt to buffer, in milliseconds. + */ + public static final int DEFAULT_MAX_BUFFER_MS = 50000; + + /** + * The default duration of media that must be buffered for playback to start or resume following a + * user action such as a seek, in milliseconds. + */ + public static final int DEFAULT_BUFFER_FOR_PLAYBACK_MS = + DefaultLoadControl.DEFAULT_BUFFER_FOR_PLAYBACK_MS; + + /** + * The default duration of media that must be buffered for playback to resume after a rebuffer, in + * milliseconds. A rebuffer is defined to be caused by buffer depletion rather than a user action. + */ + public static final int DEFAULT_BUFFER_FOR_PLAYBACK_AFTER_REBUFFER_MS = + DefaultLoadControl.DEFAULT_BUFFER_FOR_PLAYBACK_AFTER_REBUFFER_MS; + + /** + * The default offset the current duration of buffered media must deviate from the ideal duration + * of buffered media for the currently selected format, before the selected format is changed. + */ + public static final int DEFAULT_HYSTERESIS_BUFFER_MS = 5000; + + /** + * During start-up phase, the default fraction of the available bandwidth that the selection + * should consider available for use. Setting to a value less than 1 is recommended to account for + * inaccuracies in the bandwidth estimator. + */ + public static final float DEFAULT_START_UP_BANDWIDTH_FRACTION = + AdaptiveTrackSelection.DEFAULT_BANDWIDTH_FRACTION; + + /** + * During start-up phase, the default minimum duration of buffered media required for the selected + * track to switch to one of higher quality based on measured bandwidth. + */ + public static final int DEFAULT_START_UP_MIN_BUFFER_FOR_QUALITY_INCREASE_MS = + AdaptiveTrackSelection.DEFAULT_MIN_DURATION_FOR_QUALITY_INCREASE_MS; + + @Nullable private DefaultAllocator allocator; + private Clock clock; + private int minBufferMs; + private int maxBufferMs; + private int bufferForPlaybackMs; + private int bufferForPlaybackAfterRebufferMs; + private int hysteresisBufferMs; + private float startUpBandwidthFraction; + private int startUpMinBufferForQualityIncreaseMs; + private DynamicFormatFilter dynamicFormatFilter; + private boolean buildCalled; + + /** Creates builder with default values. */ + public BufferSizeAdaptationBuilder() { + clock = Clock.DEFAULT; + minBufferMs = DEFAULT_MIN_BUFFER_MS; + maxBufferMs = DEFAULT_MAX_BUFFER_MS; + bufferForPlaybackMs = DEFAULT_BUFFER_FOR_PLAYBACK_MS; + bufferForPlaybackAfterRebufferMs = DEFAULT_BUFFER_FOR_PLAYBACK_AFTER_REBUFFER_MS; + hysteresisBufferMs = DEFAULT_HYSTERESIS_BUFFER_MS; + startUpBandwidthFraction = DEFAULT_START_UP_BANDWIDTH_FRACTION; + startUpMinBufferForQualityIncreaseMs = DEFAULT_START_UP_MIN_BUFFER_FOR_QUALITY_INCREASE_MS; + dynamicFormatFilter = DynamicFormatFilter.NO_FILTER; + } + + /** + * Set the clock to use. Should only be set for testing purposes. + * + * @param clock The {@link Clock}. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #buildPlayerComponents()} has already been called. + */ + public BufferSizeAdaptationBuilder setClock(Clock clock) { + Assertions.checkState(!buildCalled); + this.clock = clock; + return this; + } + + /** + * Sets the {@link DefaultAllocator} used by the loader. + * + * @param allocator The {@link DefaultAllocator}. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #buildPlayerComponents()} has already been called. + */ + public BufferSizeAdaptationBuilder setAllocator(DefaultAllocator allocator) { + Assertions.checkState(!buildCalled); + this.allocator = allocator; + return this; + } + + /** + * Sets the buffer duration parameters. + * + * @param minBufferMs The minimum duration of media that the player will attempt to ensure is + * buffered at all times, in milliseconds. + * @param maxBufferMs The maximum duration of media that the player will attempt to buffer, in + * milliseconds. + * @param bufferForPlaybackMs The duration of media that must be buffered for playback to start or + * resume following a user action such as a seek, in milliseconds. + * @param bufferForPlaybackAfterRebufferMs The default duration of media that must be buffered for + * playback to resume after a rebuffer, in milliseconds. A rebuffer is defined to be caused by + * buffer depletion rather than a user action. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #buildPlayerComponents()} has already been called. + */ + public BufferSizeAdaptationBuilder setBufferDurationsMs( + int minBufferMs, + int maxBufferMs, + int bufferForPlaybackMs, + int bufferForPlaybackAfterRebufferMs) { + Assertions.checkState(!buildCalled); + this.minBufferMs = minBufferMs; + this.maxBufferMs = maxBufferMs; + this.bufferForPlaybackMs = bufferForPlaybackMs; + this.bufferForPlaybackAfterRebufferMs = bufferForPlaybackAfterRebufferMs; + return this; + } + + /** + * Sets the hysteresis buffer used to prevent repeated format switching. + * + * @param hysteresisBufferMs The offset the current duration of buffered media must deviate from + * the ideal duration of buffered media for the currently selected format, before the selected + * format is changed. This value must be smaller than {@code maxBufferMs - minBufferMs}. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #buildPlayerComponents()} has already been called. + */ + public BufferSizeAdaptationBuilder setHysteresisBufferMs(int hysteresisBufferMs) { + Assertions.checkState(!buildCalled); + this.hysteresisBufferMs = hysteresisBufferMs; + return this; + } + + /** + * Sets track selection parameters used during the start-up phase before the selection can be made + * purely on based on buffer size. During the start-up phase the selection is based on the current + * bandwidth estimate. + * + * @param bandwidthFraction The fraction of the available bandwidth that the selection should + * consider available for use. Setting to a value less than 1 is recommended to account for + * inaccuracies in the bandwidth estimator. + * @param minBufferForQualityIncreaseMs The minimum duration of buffered media required for the + * selected track to switch to one of higher quality. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #buildPlayerComponents()} has already been called. + */ + public BufferSizeAdaptationBuilder setStartUpTrackSelectionParameters( + float bandwidthFraction, int minBufferForQualityIncreaseMs) { + Assertions.checkState(!buildCalled); + this.startUpBandwidthFraction = bandwidthFraction; + this.startUpMinBufferForQualityIncreaseMs = minBufferForQualityIncreaseMs; + return this; + } + + /** + * Sets the {@link DynamicFormatFilter} to use when updating the selected track. + * + * @param dynamicFormatFilter The {@link DynamicFormatFilter}. + * @return This builder, for convenience. + * @throws IllegalStateException If {@link #buildPlayerComponents()} has already been called. + */ + public BufferSizeAdaptationBuilder setDynamicFormatFilter( + DynamicFormatFilter dynamicFormatFilter) { + Assertions.checkState(!buildCalled); + this.dynamicFormatFilter = dynamicFormatFilter; + return this; + } + + /** + * Builds player components for buffer size based track adaptation. + * + * @return A pair of a {@link TrackSelection.Factory} and a {@link LoadControl}, which should be + * used to construct the player. + */ + public Pair buildPlayerComponents() { + Assertions.checkArgument(hysteresisBufferMs < maxBufferMs - minBufferMs); + Assertions.checkState(!buildCalled); + buildCalled = true; + + DefaultLoadControl.Builder loadControlBuilder = + new DefaultLoadControl.Builder() + .setTargetBufferBytes(/* targetBufferBytes = */ Integer.MAX_VALUE) + .setBufferDurationsMs( + /* minBufferMs= */ maxBufferMs, + maxBufferMs, + bufferForPlaybackMs, + bufferForPlaybackAfterRebufferMs); + if (allocator != null) { + loadControlBuilder.setAllocator(allocator); + } + + TrackSelection.Factory trackSelectionFactory = + new TrackSelection.Factory() { + @Override + public @NullableType TrackSelection[] createTrackSelections( + @NullableType Definition[] definitions, BandwidthMeter bandwidthMeter) { + return TrackSelectionUtil.createTrackSelectionsForDefinitions( + definitions, + definition -> + new BufferSizeAdaptiveTrackSelection( + definition.group, + definition.tracks, + bandwidthMeter, + minBufferMs, + maxBufferMs, + hysteresisBufferMs, + startUpBandwidthFraction, + startUpMinBufferForQualityIncreaseMs, + dynamicFormatFilter, + clock)); + } + }; + + return Pair.create(trackSelectionFactory, loadControlBuilder.createDefaultLoadControl()); + } + + private static final class BufferSizeAdaptiveTrackSelection extends BaseTrackSelection { + + private static final int BITRATE_BLACKLISTED = Format.NO_VALUE; + + private final BandwidthMeter bandwidthMeter; + private final Clock clock; + private final DynamicFormatFilter dynamicFormatFilter; + private final int[] formatBitrates; + private final long minBufferUs; + private final long maxBufferUs; + private final long hysteresisBufferUs; + private final float startUpBandwidthFraction; + private final long startUpMinBufferForQualityIncreaseUs; + private final int minBitrate; + private final int maxBitrate; + private final double bitrateToBufferFunctionSlope; + private final double bitrateToBufferFunctionIntercept; + + private boolean isInSteadyState; + private int selectedIndex; + private int selectionReason; + private float playbackSpeed; + + private BufferSizeAdaptiveTrackSelection( + TrackGroup trackGroup, + int[] tracks, + BandwidthMeter bandwidthMeter, + int minBufferMs, + int maxBufferMs, + int hysteresisBufferMs, + float startUpBandwidthFraction, + int startUpMinBufferForQualityIncreaseMs, + DynamicFormatFilter dynamicFormatFilter, + Clock clock) { + super(trackGroup, tracks); + this.bandwidthMeter = bandwidthMeter; + this.minBufferUs = C.msToUs(minBufferMs); + this.maxBufferUs = C.msToUs(maxBufferMs); + this.hysteresisBufferUs = C.msToUs(hysteresisBufferMs); + this.startUpBandwidthFraction = startUpBandwidthFraction; + this.startUpMinBufferForQualityIncreaseUs = C.msToUs(startUpMinBufferForQualityIncreaseMs); + this.dynamicFormatFilter = dynamicFormatFilter; + this.clock = clock; + + formatBitrates = new int[length]; + maxBitrate = getFormat(/* index= */ 0).bitrate; + minBitrate = getFormat(/* index= */ length - 1).bitrate; + selectionReason = C.SELECTION_REASON_UNKNOWN; + playbackSpeed = 1.0f; + + // We use a log-linear function to map from bitrate to buffer size: + // buffer = slope * ln(bitrate) + intercept, + // with buffer(minBitrate) = minBuffer and buffer(maxBitrate) = maxBuffer - hysteresisBuffer. + bitrateToBufferFunctionSlope = + (maxBufferUs - hysteresisBufferUs - minBufferUs) + / Math.log((double) maxBitrate / minBitrate); + bitrateToBufferFunctionIntercept = + minBufferUs - bitrateToBufferFunctionSlope * Math.log(minBitrate); + } + + @Override + public void onPlaybackSpeed(float playbackSpeed) { + this.playbackSpeed = playbackSpeed; + } + + @Override + public void onDiscontinuity() { + isInSteadyState = false; + } + + @Override + public int getSelectedIndex() { + return selectedIndex; + } + + @Override + public int getSelectionReason() { + return selectionReason; + } + + @Override + @Nullable + public Object getSelectionData() { + return null; + } + + @Override + public void updateSelectedTrack( + long playbackPositionUs, + long bufferedDurationUs, + long availableDurationUs, + List queue, + MediaChunkIterator[] mediaChunkIterators) { + updateFormatBitrates(/* nowMs= */ clock.elapsedRealtime()); + + // Make initial selection + if (selectionReason == C.SELECTION_REASON_UNKNOWN) { + selectionReason = C.SELECTION_REASON_INITIAL; + selectedIndex = selectIdealIndexUsingBandwidth(/* isInitialSelection= */ true); + return; + } + + long bufferUs = getCurrentPeriodBufferedDurationUs(playbackPositionUs, bufferedDurationUs); + int oldSelectedIndex = selectedIndex; + if (isInSteadyState) { + selectIndexSteadyState(bufferUs); + } else { + selectIndexStartUpPhase(bufferUs); + } + if (selectedIndex != oldSelectedIndex) { + selectionReason = C.SELECTION_REASON_ADAPTIVE; + } + } + + // Steady state. + + private void selectIndexSteadyState(long bufferUs) { + if (isOutsideHysteresis(bufferUs)) { + selectedIndex = selectIdealIndexUsingBufferSize(bufferUs); + } + } + + private boolean isOutsideHysteresis(long bufferUs) { + if (formatBitrates[selectedIndex] == BITRATE_BLACKLISTED) { + return true; + } + long targetBufferForCurrentBitrateUs = + getTargetBufferForBitrateUs(formatBitrates[selectedIndex]); + long bufferDiffUs = bufferUs - targetBufferForCurrentBitrateUs; + return Math.abs(bufferDiffUs) > hysteresisBufferUs; + } + + private int selectIdealIndexUsingBufferSize(long bufferUs) { + int lowestBitrateNonBlacklistedIndex = 0; + for (int i = 0; i < formatBitrates.length; i++) { + if (formatBitrates[i] != BITRATE_BLACKLISTED) { + if (getTargetBufferForBitrateUs(formatBitrates[i]) <= bufferUs + && dynamicFormatFilter.isFormatAllowed( + getFormat(i), formatBitrates[i], /* isInitialSelection= */ false)) { + return i; + } + lowestBitrateNonBlacklistedIndex = i; + } + } + return lowestBitrateNonBlacklistedIndex; + } + + // Startup. + + private void selectIndexStartUpPhase(long bufferUs) { + int startUpSelectedIndex = selectIdealIndexUsingBandwidth(/* isInitialSelection= */ false); + int steadyStateSelectedIndex = selectIdealIndexUsingBufferSize(bufferUs); + if (steadyStateSelectedIndex <= selectedIndex) { + // Switch to steady state if we have enough buffer to maintain current selection. + selectedIndex = steadyStateSelectedIndex; + isInSteadyState = true; + } else { + if (bufferUs < startUpMinBufferForQualityIncreaseUs + && startUpSelectedIndex < selectedIndex + && formatBitrates[selectedIndex] != BITRATE_BLACKLISTED) { + // Switching up from a non-blacklisted track is only allowed if we have enough buffer. + return; + } + selectedIndex = startUpSelectedIndex; + } + } + + private int selectIdealIndexUsingBandwidth(boolean isInitialSelection) { + long effectiveBitrate = + (long) (bandwidthMeter.getBitrateEstimate() * startUpBandwidthFraction); + int lowestBitrateNonBlacklistedIndex = 0; + for (int i = 0; i < formatBitrates.length; i++) { + if (formatBitrates[i] != BITRATE_BLACKLISTED) { + if (Math.round(formatBitrates[i] * playbackSpeed) <= effectiveBitrate + && dynamicFormatFilter.isFormatAllowed( + getFormat(i), formatBitrates[i], isInitialSelection)) { + return i; + } + lowestBitrateNonBlacklistedIndex = i; + } + } + return lowestBitrateNonBlacklistedIndex; + } + + // Utility methods. + + private void updateFormatBitrates(long nowMs) { + for (int i = 0; i < length; i++) { + if (nowMs == Long.MIN_VALUE || !isBlacklisted(i, nowMs)) { + formatBitrates[i] = getFormat(i).bitrate; + } else { + formatBitrates[i] = BITRATE_BLACKLISTED; + } + } + } + + private long getTargetBufferForBitrateUs(int bitrate) { + if (bitrate <= minBitrate) { + return minBufferUs; + } + if (bitrate >= maxBitrate) { + return maxBufferUs - hysteresisBufferUs; + } + return (int) + (bitrateToBufferFunctionSlope * Math.log(bitrate) + bitrateToBufferFunctionIntercept); + } + + private static long getCurrentPeriodBufferedDurationUs( + long playbackPositionUs, long bufferedDurationUs) { + return playbackPositionUs >= 0 ? bufferedDurationUs : playbackPositionUs + bufferedDurationUs; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/DefaultTrackSelector.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/DefaultTrackSelector.java new file mode 100644 index 0000000000..549e5991b9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/DefaultTrackSelector.java @@ -0,0 +1,2827 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import android.content.Context; +import android.graphics.Point; +import android.os.Parcel; +import android.os.Parcelable; +import android.text.TextUtils; +import android.util.Pair; +import android.util.SparseArray; +import android.util.SparseBooleanArray; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Renderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities.AdaptiveSupport; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities.Capabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities.FormatSupport; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererConfiguration; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.concurrent.atomic.AtomicReference; +import org.checkerframework.checker.initialization.qual.UnderInitialization; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * A default {@link TrackSelector} suitable for most use cases. Track selections are made according + * to configurable {@link Parameters}, which can be set by calling {@link + * #setParameters(Parameters)}. + * + *

Modifying parameters

+ * + * To modify only some aspects of the parameters currently used by a selector, it's possible to + * obtain a {@link ParametersBuilder} initialized with the current {@link Parameters}. The desired + * modifications can be made on the builder, and the resulting {@link Parameters} can then be built + * and set on the selector. For example the following code modifies the parameters to restrict video + * track selections to SD, and to select a German audio track if there is one: + * + * 
{@code
+ * // Build on the current parameters.
+ * Parameters currentParameters = trackSelector.getParameters();
+ * // Build the resulting parameters.
+ * Parameters newParameters = currentParameters
+ *     .buildUpon()
+ *     .setMaxVideoSizeSd()
+ *     .setPreferredAudioLanguage("deu")
+ *     .build();
+ * // Set the new parameters.
+ * trackSelector.setParameters(newParameters);
+ * }
+ * + * Convenience methods and chaining allow this to be written more concisely as: + * + * 
{@code
+ * trackSelector.setParameters(
+ *     trackSelector
+ *         .buildUponParameters()
+ *         .setMaxVideoSizeSd()
+ *         .setPreferredAudioLanguage("deu"));
+ * }
+ * + * Selection {@link Parameters} support many different options, some of which are described below. + * + *

Selecting specific tracks

+ * + * Track selection overrides can be used to select specific tracks. To specify an override for a + * renderer, it's first necessary to obtain the tracks that have been mapped to it: + * + * 
{@code
+ * MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
+ * TrackGroupArray rendererTrackGroups = mappedTrackInfo == null ? null
+ *     : mappedTrackInfo.getTrackGroups(rendererIndex);
+ * }
+ * + * If {@code rendererTrackGroups} is null then there aren't any currently mapped tracks, and so + * setting an override isn't possible. Note that a {@link Player.EventListener} registered on the + * player can be used to determine when the current tracks (and therefore the mapping) changes. If + * {@code rendererTrackGroups} is non-null then an override can be set. The next step is to query + * the properties of the available tracks to determine the {@code groupIndex} and the {@code + * trackIndices} within the group it that should be selected. The override can then be specified + * using {@link ParametersBuilder#setSelectionOverride}: + * + * 
{@code
+ * SelectionOverride selectionOverride = new SelectionOverride(groupIndex, trackIndices);
+ * trackSelector.setParameters(
+ *     trackSelector
+ *         .buildUponParameters()
+ *         .setSelectionOverride(rendererIndex, rendererTrackGroups, selectionOverride));
+ * }
+ * + *

Constraint based track selection

+ * + * Whilst track selection overrides make it possible to select specific tracks, the recommended way + * of controlling which tracks are selected is by specifying constraints. For example consider the + * case of wanting to restrict video track selections to SD, and preferring German audio tracks. + * Track selection overrides could be used to select specific tracks meeting these criteria, however + * a simpler and more flexible approach is to specify these constraints directly: + * + * 
{@code
+ * trackSelector.setParameters(
+ *     trackSelector
+ *         .buildUponParameters()
+ *         .setMaxVideoSizeSd()
+ *         .setPreferredAudioLanguage("deu"));
+ * }
+ * + * There are several benefits to using constraint based track selection instead of specific track + * overrides: + * + *
    + *
  • You can specify constraints before knowing what tracks the media provides. This can + * simplify track selection code (e.g. you don't have to listen for changes in the available + * tracks before configuring the selector). + *
  • Constraints can be applied consistently across all periods in a complex piece of media, + * even if those periods contain different tracks. In contrast, a specific track override is + * only applied to periods whose tracks match those for which the override was set. + *
+ * + *

Disabling renderers

+ * + * Renderers can be disabled using {@link ParametersBuilder#setRendererDisabled}. Disabling a + * renderer differs from setting a {@code null} override because the renderer is disabled + * unconditionally, whereas a {@code null} override is applied only when the track groups available + * to the renderer match the {@link TrackGroupArray} for which it was specified. + * + *

Tunneling

+ * + * Tunneled playback can be enabled in cases where the combination of renderers and selected tracks + * support it. Tunneled playback is enabled by passing an audio session ID to {@link + * ParametersBuilder#setTunnelingAudioSessionId(int)}. + */ +public class DefaultTrackSelector extends MappingTrackSelector { + + /** + * A builder for {@link Parameters}. See the {@link Parameters} documentation for explanations of + * the parameters that can be configured using this builder. + */ + public static final class ParametersBuilder extends TrackSelectionParameters.Builder { + + // Video + private int maxVideoWidth; + private int maxVideoHeight; + private int maxVideoFrameRate; + private int maxVideoBitrate; + private boolean exceedVideoConstraintsIfNecessary; + private boolean allowVideoMixedMimeTypeAdaptiveness; + private boolean allowVideoNonSeamlessAdaptiveness; + private int viewportWidth; + private int viewportHeight; + private boolean viewportOrientationMayChange; + // Audio + private int maxAudioChannelCount; + private int maxAudioBitrate; + private boolean exceedAudioConstraintsIfNecessary; + private boolean allowAudioMixedMimeTypeAdaptiveness; + private boolean allowAudioMixedSampleRateAdaptiveness; + private boolean allowAudioMixedChannelCountAdaptiveness; + // General + private boolean forceLowestBitrate; + private boolean forceHighestSupportedBitrate; + private boolean exceedRendererCapabilitiesIfNecessary; + private int tunnelingAudioSessionId; + + private final SparseArray> + selectionOverrides; + private final SparseBooleanArray rendererDisabledFlags; + + /** + * @deprecated {@link Context} constraints will not be set using this constructor. Use {@link + * #ParametersBuilder(Context)} instead. + */ + @Deprecated + @SuppressWarnings({"deprecation"}) + public ParametersBuilder() { + super(); + setInitialValuesWithoutContext(); + selectionOverrides = new SparseArray<>(); + rendererDisabledFlags = new SparseBooleanArray(); + } + + /** + * Creates a builder with default initial values. + * + * @param context Any context. + */ + + public ParametersBuilder(Context context) { + super(context); + setInitialValuesWithoutContext(); + selectionOverrides = new SparseArray<>(); + rendererDisabledFlags = new SparseBooleanArray(); + setViewportSizeToPhysicalDisplaySize(context, /* viewportOrientationMayChange= */ true); + } + + /** + * @param initialValues The {@link Parameters} from which the initial values of the builder are + * obtained. + */ + private ParametersBuilder(Parameters initialValues) { + super(initialValues); + // Video + maxVideoWidth = initialValues.maxVideoWidth; + maxVideoHeight = initialValues.maxVideoHeight; + maxVideoFrameRate = initialValues.maxVideoFrameRate; + maxVideoBitrate = initialValues.maxVideoBitrate; + exceedVideoConstraintsIfNecessary = initialValues.exceedVideoConstraintsIfNecessary; + allowVideoMixedMimeTypeAdaptiveness = initialValues.allowVideoMixedMimeTypeAdaptiveness; + allowVideoNonSeamlessAdaptiveness = initialValues.allowVideoNonSeamlessAdaptiveness; + viewportWidth = initialValues.viewportWidth; + viewportHeight = initialValues.viewportHeight; + viewportOrientationMayChange = initialValues.viewportOrientationMayChange; + // Audio + maxAudioChannelCount = initialValues.maxAudioChannelCount; + maxAudioBitrate = initialValues.maxAudioBitrate; + exceedAudioConstraintsIfNecessary = initialValues.exceedAudioConstraintsIfNecessary; + allowAudioMixedMimeTypeAdaptiveness = initialValues.allowAudioMixedMimeTypeAdaptiveness; + allowAudioMixedSampleRateAdaptiveness = initialValues.allowAudioMixedSampleRateAdaptiveness; + allowAudioMixedChannelCountAdaptiveness = + initialValues.allowAudioMixedChannelCountAdaptiveness; + // General + forceLowestBitrate = initialValues.forceLowestBitrate; + forceHighestSupportedBitrate = initialValues.forceHighestSupportedBitrate; + exceedRendererCapabilitiesIfNecessary = initialValues.exceedRendererCapabilitiesIfNecessary; + tunnelingAudioSessionId = initialValues.tunnelingAudioSessionId; + // Overrides + selectionOverrides = cloneSelectionOverrides(initialValues.selectionOverrides); + rendererDisabledFlags = initialValues.rendererDisabledFlags.clone(); + } + + // Video + + /** + * Equivalent to {@link #setMaxVideoSize setMaxVideoSize(1279, 719)}. + * + * @return This builder. + */ + public ParametersBuilder setMaxVideoSizeSd() { + return setMaxVideoSize(1279, 719); + } + + /** + * Equivalent to {@link #setMaxVideoSize setMaxVideoSize(Integer.MAX_VALUE, Integer.MAX_VALUE)}. + * + * @return This builder. + */ + public ParametersBuilder clearVideoSizeConstraints() { + return setMaxVideoSize(Integer.MAX_VALUE, Integer.MAX_VALUE); + } + + /** + * Sets the maximum allowed video width and height. + * + * @param maxVideoWidth Maximum allowed video width in pixels. + * @param maxVideoHeight Maximum allowed video height in pixels. + * @return This builder. + */ + public ParametersBuilder setMaxVideoSize(int maxVideoWidth, int maxVideoHeight) { + this.maxVideoWidth = maxVideoWidth; + this.maxVideoHeight = maxVideoHeight; + return this; + } + + /** + * Sets the maximum allowed video frame rate. + * + * @param maxVideoFrameRate Maximum allowed video frame rate in hertz. + * @return This builder. + */ + public ParametersBuilder setMaxVideoFrameRate(int maxVideoFrameRate) { + this.maxVideoFrameRate = maxVideoFrameRate; + return this; + } + + /** + * Sets the maximum allowed video bitrate. + * + * @param maxVideoBitrate Maximum allowed video bitrate in bits per second. + * @return This builder. + */ + public ParametersBuilder setMaxVideoBitrate(int maxVideoBitrate) { + this.maxVideoBitrate = maxVideoBitrate; + return this; + } + + /** + * Sets whether to exceed the {@link #setMaxVideoSize(int, int)} and {@link + * #setMaxAudioBitrate(int)} constraints when no selection can be made otherwise. + * + * @param exceedVideoConstraintsIfNecessary Whether to exceed video constraints when no + * selection can be made otherwise. + * @return This builder. + */ + public ParametersBuilder setExceedVideoConstraintsIfNecessary( + boolean exceedVideoConstraintsIfNecessary) { + this.exceedVideoConstraintsIfNecessary = exceedVideoConstraintsIfNecessary; + return this; + } + + /** + * Sets whether to allow adaptive video selections containing mixed MIME types. + * + *

Adaptations between different MIME types may not be completely seamless, in which case + * {@link #setAllowVideoNonSeamlessAdaptiveness(boolean)} also needs to be {@code true} for + * mixed MIME type selections to be made. + * + * @param allowVideoMixedMimeTypeAdaptiveness Whether to allow adaptive video selections + * containing mixed MIME types. + * @return This builder. + */ + public ParametersBuilder setAllowVideoMixedMimeTypeAdaptiveness( + boolean allowVideoMixedMimeTypeAdaptiveness) { + this.allowVideoMixedMimeTypeAdaptiveness = allowVideoMixedMimeTypeAdaptiveness; + return this; + } + + /** + * Sets whether to allow adaptive video selections where adaptation may not be completely + * seamless. + * + * @param allowVideoNonSeamlessAdaptiveness Whether to allow adaptive video selections where + * adaptation may not be completely seamless. + * @return This builder. + */ + public ParametersBuilder setAllowVideoNonSeamlessAdaptiveness( + boolean allowVideoNonSeamlessAdaptiveness) { + this.allowVideoNonSeamlessAdaptiveness = allowVideoNonSeamlessAdaptiveness; + return this; + } + + /** + * Equivalent to calling {@link #setViewportSize(int, int, boolean)} with the viewport size + * obtained from {@link Util#getCurrentDisplayModeSize(Context)}. + * + * @param context Any context. + * @param viewportOrientationMayChange Whether the viewport orientation may change during + * playback. + * @return This builder. + */ + public ParametersBuilder setViewportSizeToPhysicalDisplaySize( + Context context, boolean viewportOrientationMayChange) { + // Assume the viewport is fullscreen. + Point viewportSize = Util.getCurrentDisplayModeSize(context); + return setViewportSize(viewportSize.x, viewportSize.y, viewportOrientationMayChange); + } + + /** + * Equivalent to {@link #setViewportSize setViewportSize(Integer.MAX_VALUE, Integer.MAX_VALUE, + * true)}. + * + * @return This builder. + */ + public ParametersBuilder clearViewportSizeConstraints() { + return setViewportSize(Integer.MAX_VALUE, Integer.MAX_VALUE, true); + } + + /** + * Sets the viewport size to constrain adaptive video selections so that only tracks suitable + * for the viewport are selected. + * + * @param viewportWidth Viewport width in pixels. + * @param viewportHeight Viewport height in pixels. + * @param viewportOrientationMayChange Whether the viewport orientation may change during + * playback. + * @return This builder. + */ + public ParametersBuilder setViewportSize( + int viewportWidth, int viewportHeight, boolean viewportOrientationMayChange) { + this.viewportWidth = viewportWidth; + this.viewportHeight = viewportHeight; + this.viewportOrientationMayChange = viewportOrientationMayChange; + return this; + } + + // Audio + + @Override + public ParametersBuilder setPreferredAudioLanguage(@Nullable String preferredAudioLanguage) { + super.setPreferredAudioLanguage(preferredAudioLanguage); + return this; + } + + /** + * Sets the maximum allowed audio channel count. + * + * @param maxAudioChannelCount Maximum allowed audio channel count. + * @return This builder. + */ + public ParametersBuilder setMaxAudioChannelCount(int maxAudioChannelCount) { + this.maxAudioChannelCount = maxAudioChannelCount; + return this; + } + + /** + * Sets the maximum allowed audio bitrate. + * + * @param maxAudioBitrate Maximum allowed audio bitrate in bits per second. + * @return This builder. + */ + public ParametersBuilder setMaxAudioBitrate(int maxAudioBitrate) { + this.maxAudioBitrate = maxAudioBitrate; + return this; + } + + /** + * Sets whether to exceed the {@link #setMaxAudioChannelCount(int)} and {@link + * #setMaxAudioBitrate(int)} constraints when no selection can be made otherwise. + * + * @param exceedAudioConstraintsIfNecessary Whether to exceed audio constraints when no + * selection can be made otherwise. + * @return This builder. + */ + public ParametersBuilder setExceedAudioConstraintsIfNecessary( + boolean exceedAudioConstraintsIfNecessary) { + this.exceedAudioConstraintsIfNecessary = exceedAudioConstraintsIfNecessary; + return this; + } + + /** + * Sets whether to allow adaptive audio selections containing mixed MIME types. + * + *

Adaptations between different MIME types may not be completely seamless. + * + * @param allowAudioMixedMimeTypeAdaptiveness Whether to allow adaptive audio selections + * containing mixed MIME types. + * @return This builder. + */ + public ParametersBuilder setAllowAudioMixedMimeTypeAdaptiveness( + boolean allowAudioMixedMimeTypeAdaptiveness) { + this.allowAudioMixedMimeTypeAdaptiveness = allowAudioMixedMimeTypeAdaptiveness; + return this; + } + + /** + * Sets whether to allow adaptive audio selections containing mixed sample rates. + * + *

Adaptations between different sample rates may not be completely seamless. + * + * @param allowAudioMixedSampleRateAdaptiveness Whether to allow adaptive audio selections + * containing mixed sample rates. + * @return This builder. + */ + public ParametersBuilder setAllowAudioMixedSampleRateAdaptiveness( + boolean allowAudioMixedSampleRateAdaptiveness) { + this.allowAudioMixedSampleRateAdaptiveness = allowAudioMixedSampleRateAdaptiveness; + return this; + } + + /** + * Sets whether to allow adaptive audio selections containing mixed channel counts. + * + *

Adaptations between different channel counts may not be completely seamless. + * + * @param allowAudioMixedChannelCountAdaptiveness Whether to allow adaptive audio selections + * containing mixed channel counts. + * @return This builder. + */ + public ParametersBuilder setAllowAudioMixedChannelCountAdaptiveness( + boolean allowAudioMixedChannelCountAdaptiveness) { + this.allowAudioMixedChannelCountAdaptiveness = allowAudioMixedChannelCountAdaptiveness; + return this; + } + + // Text + + @Override + public ParametersBuilder setPreferredTextLanguageAndRoleFlagsToCaptioningManagerSettings( + Context context) { + super.setPreferredTextLanguageAndRoleFlagsToCaptioningManagerSettings(context); + return this; + } + + @Override + public ParametersBuilder setPreferredTextLanguage(@Nullable String preferredTextLanguage) { + super.setPreferredTextLanguage(preferredTextLanguage); + return this; + } + + @Override + public ParametersBuilder setPreferredTextRoleFlags(@C.RoleFlags int preferredTextRoleFlags) { + super.setPreferredTextRoleFlags(preferredTextRoleFlags); + return this; + } + + @Override + public ParametersBuilder setSelectUndeterminedTextLanguage( + boolean selectUndeterminedTextLanguage) { + super.setSelectUndeterminedTextLanguage(selectUndeterminedTextLanguage); + return this; + } + + @Override + public ParametersBuilder setDisabledTextTrackSelectionFlags( + @C.SelectionFlags int disabledTextTrackSelectionFlags) { + super.setDisabledTextTrackSelectionFlags(disabledTextTrackSelectionFlags); + return this; + } + + // General + + /** + * Sets whether to force selection of the single lowest bitrate audio and video tracks that + * comply with all other constraints. + * + * @param forceLowestBitrate Whether to force selection of the single lowest bitrate audio and + * video tracks. + * @return This builder. + */ + public ParametersBuilder setForceLowestBitrate(boolean forceLowestBitrate) { + this.forceLowestBitrate = forceLowestBitrate; + return this; + } + + /** + * Sets whether to force selection of the highest bitrate audio and video tracks that comply + * with all other constraints. + * + * @param forceHighestSupportedBitrate Whether to force selection of the highest bitrate audio + * and video tracks. + * @return This builder. + */ + public ParametersBuilder setForceHighestSupportedBitrate(boolean forceHighestSupportedBitrate) { + this.forceHighestSupportedBitrate = forceHighestSupportedBitrate; + return this; + } + + /** + * @deprecated Use {@link #setAllowVideoMixedMimeTypeAdaptiveness(boolean)} and {@link + * #setAllowAudioMixedMimeTypeAdaptiveness(boolean)}. + */ + @Deprecated + public ParametersBuilder setAllowMixedMimeAdaptiveness(boolean allowMixedMimeAdaptiveness) { + setAllowAudioMixedMimeTypeAdaptiveness(allowMixedMimeAdaptiveness); + setAllowVideoMixedMimeTypeAdaptiveness(allowMixedMimeAdaptiveness); + return this; + } + + /** @deprecated Use {@link #setAllowVideoNonSeamlessAdaptiveness(boolean)} */ + @Deprecated + public ParametersBuilder setAllowNonSeamlessAdaptiveness(boolean allowNonSeamlessAdaptiveness) { + return setAllowVideoNonSeamlessAdaptiveness(allowNonSeamlessAdaptiveness); + } + + /** + * Sets whether to exceed renderer capabilities when no selection can be made otherwise. + * + *

This parameter applies when all of the tracks available for a renderer exceed the + * renderer's reported capabilities. If the parameter is {@code true} then the lowest quality + * track will still be selected. Playback may succeed if the renderer has under-reported its + * true capabilities. If {@code false} then no track will be selected. + * + * @param exceedRendererCapabilitiesIfNecessary Whether to exceed renderer capabilities when no + * selection can be made otherwise. + * @return This builder. + */ + public ParametersBuilder setExceedRendererCapabilitiesIfNecessary( + boolean exceedRendererCapabilitiesIfNecessary) { + this.exceedRendererCapabilitiesIfNecessary = exceedRendererCapabilitiesIfNecessary; + return this; + } + + /** + * Sets the audio session id to use when tunneling. + * + *

Enables or disables tunneling. To enable tunneling, pass an audio session id to use when + * in tunneling mode. Session ids can be generated using {@link + * C#generateAudioSessionIdV21(Context)}. To disable tunneling pass {@link + * C#AUDIO_SESSION_ID_UNSET}. Tunneling will only be activated if it's both enabled and + * supported by the audio and video renderers for the selected tracks. + * + * @param tunnelingAudioSessionId The audio session id to use when tunneling, or {@link + * C#AUDIO_SESSION_ID_UNSET} to disable tunneling. + * @return This builder. + */ + public ParametersBuilder setTunnelingAudioSessionId(int tunnelingAudioSessionId) { + this.tunnelingAudioSessionId = tunnelingAudioSessionId; + return this; + } + + // Overrides + + /** + * Sets whether the renderer at the specified index is disabled. Disabling a renderer prevents + * the selector from selecting any tracks for it. + * + * @param rendererIndex The renderer index. + * @param disabled Whether the renderer is disabled. + * @return This builder. + */ + public final ParametersBuilder setRendererDisabled(int rendererIndex, boolean disabled) { + if (rendererDisabledFlags.get(rendererIndex) == disabled) { + // The disabled flag is unchanged. + return this; + } + // Only true values are placed in the array to make it easier to check for equality. + if (disabled) { + rendererDisabledFlags.put(rendererIndex, true); + } else { + rendererDisabledFlags.delete(rendererIndex); + } + return this; + } + + /** + * Overrides the track selection for the renderer at the specified index. + * + *

When the {@link TrackGroupArray} mapped to the renderer matches the one provided, the + * override is applied. When the {@link TrackGroupArray} does not match, the override has no + * effect. The override replaces any previous override for the specified {@link TrackGroupArray} + * for the specified {@link Renderer}. + * + *

Passing a {@code null} override will cause the renderer to be disabled when the {@link + * TrackGroupArray} mapped to it matches the one provided. When the {@link TrackGroupArray} does + * not match a {@code null} override has no effect. Hence a {@code null} override differs from + * disabling the renderer using {@link #setRendererDisabled(int, boolean)} because the renderer + * is disabled conditionally on the {@link TrackGroupArray} mapped to it, where-as {@link + * #setRendererDisabled(int, boolean)} disables the renderer unconditionally. + * + *

To remove overrides use {@link #clearSelectionOverride(int, TrackGroupArray)}, {@link + * #clearSelectionOverrides(int)} or {@link #clearSelectionOverrides()}. + * + * @param rendererIndex The renderer index. + * @param groups The {@link TrackGroupArray} for which the override should be applied. + * @param override The override. + * @return This builder. + */ + public final ParametersBuilder setSelectionOverride( + int rendererIndex, TrackGroupArray groups, @Nullable SelectionOverride override) { + Map overrides = + selectionOverrides.get(rendererIndex); + if (overrides == null) { + overrides = new HashMap<>(); + selectionOverrides.put(rendererIndex, overrides); + } + if (overrides.containsKey(groups) && Util.areEqual(overrides.get(groups), override)) { + // The override is unchanged. + return this; + } + overrides.put(groups, override); + return this; + } + + /** + * Clears a track selection override for the specified renderer and {@link TrackGroupArray}. + * + * @param rendererIndex The renderer index. + * @param groups The {@link TrackGroupArray} for which the override should be cleared. + * @return This builder. + */ + public final ParametersBuilder clearSelectionOverride( + int rendererIndex, TrackGroupArray groups) { + Map overrides = + selectionOverrides.get(rendererIndex); + if (overrides == null || !overrides.containsKey(groups)) { + // Nothing to clear. + return this; + } + overrides.remove(groups); + if (overrides.isEmpty()) { + selectionOverrides.remove(rendererIndex); + } + return this; + } + + /** + * Clears all track selection overrides for the specified renderer. + * + * @param rendererIndex The renderer index. + * @return This builder. + */ + public final ParametersBuilder clearSelectionOverrides(int rendererIndex) { + Map overrides = + selectionOverrides.get(rendererIndex); + if (overrides == null || overrides.isEmpty()) { + // Nothing to clear. + return this; + } + selectionOverrides.remove(rendererIndex); + return this; + } + + /** + * Clears all track selection overrides for all renderers. + * + * @return This builder. + */ + public final ParametersBuilder clearSelectionOverrides() { + if (selectionOverrides.size() == 0) { + // Nothing to clear. + return this; + } + selectionOverrides.clear(); + return this; + } + + /** + * Builds a {@link Parameters} instance with the selected values. + */ + public Parameters build() { + return new Parameters( + // Video + maxVideoWidth, + maxVideoHeight, + maxVideoFrameRate, + maxVideoBitrate, + exceedVideoConstraintsIfNecessary, + allowVideoMixedMimeTypeAdaptiveness, + allowVideoNonSeamlessAdaptiveness, + viewportWidth, + viewportHeight, + viewportOrientationMayChange, + // Audio + preferredAudioLanguage, + maxAudioChannelCount, + maxAudioBitrate, + exceedAudioConstraintsIfNecessary, + allowAudioMixedMimeTypeAdaptiveness, + allowAudioMixedSampleRateAdaptiveness, + allowAudioMixedChannelCountAdaptiveness, + // Text + preferredTextLanguage, + preferredTextRoleFlags, + selectUndeterminedTextLanguage, + disabledTextTrackSelectionFlags, + // General + forceLowestBitrate, + forceHighestSupportedBitrate, + exceedRendererCapabilitiesIfNecessary, + tunnelingAudioSessionId, + selectionOverrides, + rendererDisabledFlags); + } + + private void setInitialValuesWithoutContext(@UnderInitialization ParametersBuilder this) { + // Video + maxVideoWidth = Integer.MAX_VALUE; + maxVideoHeight = Integer.MAX_VALUE; + maxVideoFrameRate = Integer.MAX_VALUE; + maxVideoBitrate = Integer.MAX_VALUE; + exceedVideoConstraintsIfNecessary = true; + allowVideoMixedMimeTypeAdaptiveness = false; + allowVideoNonSeamlessAdaptiveness = true; + viewportWidth = Integer.MAX_VALUE; + viewportHeight = Integer.MAX_VALUE; + viewportOrientationMayChange = true; + // Audio + maxAudioChannelCount = Integer.MAX_VALUE; + maxAudioBitrate = Integer.MAX_VALUE; + exceedAudioConstraintsIfNecessary = true; + allowAudioMixedMimeTypeAdaptiveness = false; + allowAudioMixedSampleRateAdaptiveness = false; + allowAudioMixedChannelCountAdaptiveness = false; + // General + forceLowestBitrate = false; + forceHighestSupportedBitrate = false; + exceedRendererCapabilitiesIfNecessary = true; + tunnelingAudioSessionId = C.AUDIO_SESSION_ID_UNSET; + } + + private static SparseArray> + cloneSelectionOverrides( + SparseArray> selectionOverrides) { + SparseArray> clone = + new SparseArray<>(); + for (int i = 0; i < selectionOverrides.size(); i++) { + clone.put(selectionOverrides.keyAt(i), new HashMap<>(selectionOverrides.valueAt(i))); + } + return clone; + } + } + + /** + * Extends {@link TrackSelectionParameters} by adding fields that are specific to {@link + * DefaultTrackSelector}. + */ + public static final class Parameters extends TrackSelectionParameters { + + /** + * An instance with default values, except those obtained from the {@link Context}. + * + *

If possible, use {@link #getDefaults(Context)} instead. + * + *

This instance will not have the following settings: + * + *

    + *
  • {@link ParametersBuilder#setViewportSizeToPhysicalDisplaySize(Context, boolean) + * Viewport constraints} configured for the primary display. + *
  • {@link + * ParametersBuilder#setPreferredTextLanguageAndRoleFlagsToCaptioningManagerSettings(Context) + * Preferred text language and role flags} configured to the accessibility settings of + * {@link android.view.accessibility.CaptioningManager}. + *
+ */ + @SuppressWarnings("deprecation") + public static final Parameters DEFAULT_WITHOUT_CONTEXT = new ParametersBuilder().build(); + + /** + * @deprecated This instance does not have {@link Context} constraints configured. Use {@link + * #getDefaults(Context)} instead. + */ + @Deprecated public static final Parameters DEFAULT_WITHOUT_VIEWPORT = DEFAULT_WITHOUT_CONTEXT; + + /** + * @deprecated This instance does not have {@link Context} constraints configured. Use {@link + * #getDefaults(Context)} instead. + */ + @Deprecated + public static final Parameters DEFAULT = DEFAULT_WITHOUT_CONTEXT; + + /** Returns an instance configured with default values. */ + public static Parameters getDefaults(Context context) { + return new ParametersBuilder(context).build(); + } + + // Video + /** + * Maximum allowed video width in pixels. The default value is {@link Integer#MAX_VALUE} (i.e. + * no constraint). + * + *

To constrain adaptive video track selections to be suitable for a given viewport (the + * region of the display within which video will be played), use ({@link #viewportWidth}, {@link + * #viewportHeight} and {@link #viewportOrientationMayChange}) instead. + */ + public final int maxVideoWidth; + /** + * Maximum allowed video height in pixels. The default value is {@link Integer#MAX_VALUE} (i.e. + * no constraint). + * + *

To constrain adaptive video track selections to be suitable for a given viewport (the + * region of the display within which video will be played), use ({@link #viewportWidth}, {@link + * #viewportHeight} and {@link #viewportOrientationMayChange}) instead. + */ + public final int maxVideoHeight; + /** + * Maximum allowed video frame rate in hertz. The default value is {@link Integer#MAX_VALUE} + * (i.e. no constraint). + */ + public final int maxVideoFrameRate; + /** + * Maximum allowed video bitrate in bits per second. The default value is {@link + * Integer#MAX_VALUE} (i.e. no constraint). + */ + public final int maxVideoBitrate; + /** + * Whether to exceed the {@link #maxVideoWidth}, {@link #maxVideoHeight} and {@link + * #maxVideoBitrate} constraints when no selection can be made otherwise. The default value is + * {@code true}. + */ + public final boolean exceedVideoConstraintsIfNecessary; + /** + * Whether to allow adaptive video selections containing mixed MIME types. Adaptations between + * different MIME types may not be completely seamless, in which case {@link + * #allowVideoNonSeamlessAdaptiveness} also needs to be {@code true} for mixed MIME type + * selections to be made. The default value is {@code false}. + */ + public final boolean allowVideoMixedMimeTypeAdaptiveness; + /** + * Whether to allow adaptive video selections where adaptation may not be completely seamless. + * The default value is {@code true}. + */ + public final boolean allowVideoNonSeamlessAdaptiveness; + /** + * Viewport width in pixels. Constrains video track selections for adaptive content so that only + * tracks suitable for the viewport are selected. The default value is the physical width of the + * primary display, in pixels. + */ + public final int viewportWidth; + /** + * Viewport height in pixels. Constrains video track selections for adaptive content so that + * only tracks suitable for the viewport are selected. The default value is the physical height + * of the primary display, in pixels. + */ + public final int viewportHeight; + /** + * Whether the viewport orientation may change during playback. Constrains video track + * selections for adaptive content so that only tracks suitable for the viewport are selected. + * The default value is {@code true}. + */ + public final boolean viewportOrientationMayChange; + // Audio + /** + * Maximum allowed audio channel count. The default value is {@link Integer#MAX_VALUE} (i.e. no + * constraint). + */ + public final int maxAudioChannelCount; + /** + * Maximum allowed audio bitrate in bits per second. The default value is {@link + * Integer#MAX_VALUE} (i.e. no constraint). + */ + public final int maxAudioBitrate; + /** + * Whether to exceed the {@link #maxAudioChannelCount} and {@link #maxAudioBitrate} constraints + * when no selection can be made otherwise. The default value is {@code true}. + */ + public final boolean exceedAudioConstraintsIfNecessary; + /** + * Whether to allow adaptive audio selections containing mixed MIME types. Adaptations between + * different MIME types may not be completely seamless. The default value is {@code false}. + */ + public final boolean allowAudioMixedMimeTypeAdaptiveness; + /** + * Whether to allow adaptive audio selections containing mixed sample rates. Adaptations between + * different sample rates may not be completely seamless. The default value is {@code false}. + */ + public final boolean allowAudioMixedSampleRateAdaptiveness; + /** + * Whether to allow adaptive audio selections containing mixed channel counts. Adaptations + * between different channel counts may not be completely seamless. The default value is {@code + * false}. + */ + public final boolean allowAudioMixedChannelCountAdaptiveness; + + // General + /** + * Whether to force selection of the single lowest bitrate audio and video tracks that comply + * with all other constraints. The default value is {@code false}. + */ + public final boolean forceLowestBitrate; + /** + * Whether to force selection of the highest bitrate audio and video tracks that comply with all + * other constraints. The default value is {@code false}. + */ + public final boolean forceHighestSupportedBitrate; + /** + * @deprecated Use {@link #allowVideoMixedMimeTypeAdaptiveness} and {@link + * #allowAudioMixedMimeTypeAdaptiveness}. + */ + @Deprecated public final boolean allowMixedMimeAdaptiveness; + /** @deprecated Use {@link #allowVideoNonSeamlessAdaptiveness}. */ + @Deprecated public final boolean allowNonSeamlessAdaptiveness; + /** + * Whether to exceed renderer capabilities when no selection can be made otherwise. + * + *

This parameter applies when all of the tracks available for a renderer exceed the + * renderer's reported capabilities. If the parameter is {@code true} then the lowest quality + * track will still be selected. Playback may succeed if the renderer has under-reported its + * true capabilities. If {@code false} then no track will be selected. The default value is + * {@code true}. + */ + public final boolean exceedRendererCapabilitiesIfNecessary; + /** + * The audio session id to use when tunneling, or {@link C#AUDIO_SESSION_ID_UNSET} if tunneling + * is disabled. The default value is {@link C#AUDIO_SESSION_ID_UNSET} (i.e. tunneling is + * disabled). + */ + public final int tunnelingAudioSessionId; + + // Overrides + private final SparseArray> + selectionOverrides; + private final SparseBooleanArray rendererDisabledFlags; + + /* package */ Parameters( + // Video + int maxVideoWidth, + int maxVideoHeight, + int maxVideoFrameRate, + int maxVideoBitrate, + boolean exceedVideoConstraintsIfNecessary, + boolean allowVideoMixedMimeTypeAdaptiveness, + boolean allowVideoNonSeamlessAdaptiveness, + int viewportWidth, + int viewportHeight, + boolean viewportOrientationMayChange, + // Audio + @Nullable String preferredAudioLanguage, + int maxAudioChannelCount, + int maxAudioBitrate, + boolean exceedAudioConstraintsIfNecessary, + boolean allowAudioMixedMimeTypeAdaptiveness, + boolean allowAudioMixedSampleRateAdaptiveness, + boolean allowAudioMixedChannelCountAdaptiveness, + // Text + @Nullable String preferredTextLanguage, + @C.RoleFlags int preferredTextRoleFlags, + boolean selectUndeterminedTextLanguage, + @C.SelectionFlags int disabledTextTrackSelectionFlags, + // General + boolean forceLowestBitrate, + boolean forceHighestSupportedBitrate, + boolean exceedRendererCapabilitiesIfNecessary, + int tunnelingAudioSessionId, + // Overrides + SparseArray> selectionOverrides, + SparseBooleanArray rendererDisabledFlags) { + super( + preferredAudioLanguage, + preferredTextLanguage, + preferredTextRoleFlags, + selectUndeterminedTextLanguage, + disabledTextTrackSelectionFlags); + // Video + this.maxVideoWidth = maxVideoWidth; + this.maxVideoHeight = maxVideoHeight; + this.maxVideoFrameRate = maxVideoFrameRate; + this.maxVideoBitrate = maxVideoBitrate; + this.exceedVideoConstraintsIfNecessary = exceedVideoConstraintsIfNecessary; + this.allowVideoMixedMimeTypeAdaptiveness = allowVideoMixedMimeTypeAdaptiveness; + this.allowVideoNonSeamlessAdaptiveness = allowVideoNonSeamlessAdaptiveness; + this.viewportWidth = viewportWidth; + this.viewportHeight = viewportHeight; + this.viewportOrientationMayChange = viewportOrientationMayChange; + // Audio + this.maxAudioChannelCount = maxAudioChannelCount; + this.maxAudioBitrate = maxAudioBitrate; + this.exceedAudioConstraintsIfNecessary = exceedAudioConstraintsIfNecessary; + this.allowAudioMixedMimeTypeAdaptiveness = allowAudioMixedMimeTypeAdaptiveness; + this.allowAudioMixedSampleRateAdaptiveness = allowAudioMixedSampleRateAdaptiveness; + this.allowAudioMixedChannelCountAdaptiveness = allowAudioMixedChannelCountAdaptiveness; + // General + this.forceLowestBitrate = forceLowestBitrate; + this.forceHighestSupportedBitrate = forceHighestSupportedBitrate; + this.exceedRendererCapabilitiesIfNecessary = exceedRendererCapabilitiesIfNecessary; + this.tunnelingAudioSessionId = tunnelingAudioSessionId; + // Deprecated fields. + this.allowMixedMimeAdaptiveness = allowVideoMixedMimeTypeAdaptiveness; + this.allowNonSeamlessAdaptiveness = allowVideoNonSeamlessAdaptiveness; + // Overrides + this.selectionOverrides = selectionOverrides; + this.rendererDisabledFlags = rendererDisabledFlags; + } + + /* package */ + Parameters(Parcel in) { + super(in); + // Video + this.maxVideoWidth = in.readInt(); + this.maxVideoHeight = in.readInt(); + this.maxVideoFrameRate = in.readInt(); + this.maxVideoBitrate = in.readInt(); + this.exceedVideoConstraintsIfNecessary = Util.readBoolean(in); + this.allowVideoMixedMimeTypeAdaptiveness = Util.readBoolean(in); + this.allowVideoNonSeamlessAdaptiveness = Util.readBoolean(in); + this.viewportWidth = in.readInt(); + this.viewportHeight = in.readInt(); + this.viewportOrientationMayChange = Util.readBoolean(in); + // Audio + this.maxAudioChannelCount = in.readInt(); + this.maxAudioBitrate = in.readInt(); + this.exceedAudioConstraintsIfNecessary = Util.readBoolean(in); + this.allowAudioMixedMimeTypeAdaptiveness = Util.readBoolean(in); + this.allowAudioMixedSampleRateAdaptiveness = Util.readBoolean(in); + this.allowAudioMixedChannelCountAdaptiveness = Util.readBoolean(in); + // General + this.forceLowestBitrate = Util.readBoolean(in); + this.forceHighestSupportedBitrate = Util.readBoolean(in); + this.exceedRendererCapabilitiesIfNecessary = Util.readBoolean(in); + this.tunnelingAudioSessionId = in.readInt(); + // Overrides + this.selectionOverrides = readSelectionOverrides(in); + this.rendererDisabledFlags = Util.castNonNull(in.readSparseBooleanArray()); + // Deprecated fields. + this.allowMixedMimeAdaptiveness = allowVideoMixedMimeTypeAdaptiveness; + this.allowNonSeamlessAdaptiveness = allowVideoNonSeamlessAdaptiveness; + } + + /** + * Returns whether the renderer is disabled. + * + * @param rendererIndex The renderer index. + * @return Whether the renderer is disabled. + */ + public final boolean getRendererDisabled(int rendererIndex) { + return rendererDisabledFlags.get(rendererIndex); + } + + /** + * Returns whether there is an override for the specified renderer and {@link TrackGroupArray}. + * + * @param rendererIndex The renderer index. + * @param groups The {@link TrackGroupArray}. + * @return Whether there is an override. + */ + public final boolean hasSelectionOverride(int rendererIndex, TrackGroupArray groups) { + Map overrides = + selectionOverrides.get(rendererIndex); + return overrides != null && overrides.containsKey(groups); + } + + /** + * Returns the override for the specified renderer and {@link TrackGroupArray}. + * + * @param rendererIndex The renderer index. + * @param groups The {@link TrackGroupArray}. + * @return The override, or null if no override exists. + */ + @Nullable + public final SelectionOverride getSelectionOverride(int rendererIndex, TrackGroupArray groups) { + Map overrides = + selectionOverrides.get(rendererIndex); + return overrides != null ? overrides.get(groups) : null; + } + + /** Creates a new {@link ParametersBuilder}, copying the initial values from this instance. */ + @Override + public ParametersBuilder buildUpon() { + return new ParametersBuilder(this); + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + Parameters other = (Parameters) obj; + return super.equals(obj) + // Video + && maxVideoWidth == other.maxVideoWidth + && maxVideoHeight == other.maxVideoHeight + && maxVideoFrameRate == other.maxVideoFrameRate + && maxVideoBitrate == other.maxVideoBitrate + && exceedVideoConstraintsIfNecessary == other.exceedVideoConstraintsIfNecessary + && allowVideoMixedMimeTypeAdaptiveness == other.allowVideoMixedMimeTypeAdaptiveness + && allowVideoNonSeamlessAdaptiveness == other.allowVideoNonSeamlessAdaptiveness + && viewportOrientationMayChange == other.viewportOrientationMayChange + && viewportWidth == other.viewportWidth + && viewportHeight == other.viewportHeight + // Audio + && maxAudioChannelCount == other.maxAudioChannelCount + && maxAudioBitrate == other.maxAudioBitrate + && exceedAudioConstraintsIfNecessary == other.exceedAudioConstraintsIfNecessary + && allowAudioMixedMimeTypeAdaptiveness == other.allowAudioMixedMimeTypeAdaptiveness + && allowAudioMixedSampleRateAdaptiveness == other.allowAudioMixedSampleRateAdaptiveness + && allowAudioMixedChannelCountAdaptiveness + == other.allowAudioMixedChannelCountAdaptiveness + // General + && forceLowestBitrate == other.forceLowestBitrate + && forceHighestSupportedBitrate == other.forceHighestSupportedBitrate + && exceedRendererCapabilitiesIfNecessary == other.exceedRendererCapabilitiesIfNecessary + && tunnelingAudioSessionId == other.tunnelingAudioSessionId + // Overrides + && areRendererDisabledFlagsEqual(rendererDisabledFlags, other.rendererDisabledFlags) + && areSelectionOverridesEqual(selectionOverrides, other.selectionOverrides); + } + + @Override + public int hashCode() { + int result = super.hashCode(); + // Video + result = 31 * result + maxVideoWidth; + result = 31 * result + maxVideoHeight; + result = 31 * result + maxVideoFrameRate; + result = 31 * result + maxVideoBitrate; + result = 31 * result + (exceedVideoConstraintsIfNecessary ? 1 : 0); + result = 31 * result + (allowVideoMixedMimeTypeAdaptiveness ? 1 : 0); + result = 31 * result + (allowVideoNonSeamlessAdaptiveness ? 1 : 0); + result = 31 * result + (viewportOrientationMayChange ? 1 : 0); + result = 31 * result + viewportWidth; + result = 31 * result + viewportHeight; + // Audio + result = 31 * result + maxAudioChannelCount; + result = 31 * result + maxAudioBitrate; + result = 31 * result + (exceedAudioConstraintsIfNecessary ? 1 : 0); + result = 31 * result + (allowAudioMixedMimeTypeAdaptiveness ? 1 : 0); + result = 31 * result + (allowAudioMixedSampleRateAdaptiveness ? 1 : 0); + result = 31 * result + (allowAudioMixedChannelCountAdaptiveness ? 1 : 0); + // General + result = 31 * result + (forceLowestBitrate ? 1 : 0); + result = 31 * result + (forceHighestSupportedBitrate ? 1 : 0); + result = 31 * result + (exceedRendererCapabilitiesIfNecessary ? 1 : 0); + result = 31 * result + tunnelingAudioSessionId; + // Overrides (omitted from hashCode). + return result; + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + super.writeToParcel(dest, flags); + // Video + dest.writeInt(maxVideoWidth); + dest.writeInt(maxVideoHeight); + dest.writeInt(maxVideoFrameRate); + dest.writeInt(maxVideoBitrate); + Util.writeBoolean(dest, exceedVideoConstraintsIfNecessary); + Util.writeBoolean(dest, allowVideoMixedMimeTypeAdaptiveness); + Util.writeBoolean(dest, allowVideoNonSeamlessAdaptiveness); + dest.writeInt(viewportWidth); + dest.writeInt(viewportHeight); + Util.writeBoolean(dest, viewportOrientationMayChange); + // Audio + dest.writeInt(maxAudioChannelCount); + dest.writeInt(maxAudioBitrate); + Util.writeBoolean(dest, exceedAudioConstraintsIfNecessary); + Util.writeBoolean(dest, allowAudioMixedMimeTypeAdaptiveness); + Util.writeBoolean(dest, allowAudioMixedSampleRateAdaptiveness); + Util.writeBoolean(dest, allowAudioMixedChannelCountAdaptiveness); + // General + Util.writeBoolean(dest, forceLowestBitrate); + Util.writeBoolean(dest, forceHighestSupportedBitrate); + Util.writeBoolean(dest, exceedRendererCapabilitiesIfNecessary); + dest.writeInt(tunnelingAudioSessionId); + // Overrides + writeSelectionOverridesToParcel(dest, selectionOverrides); + dest.writeSparseBooleanArray(rendererDisabledFlags); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public Parameters createFromParcel(Parcel in) { + return new Parameters(in); + } + + @Override + public Parameters[] newArray(int size) { + return new Parameters[size]; + } + }; + + // Static utility methods. + + private static SparseArray> + readSelectionOverrides(Parcel in) { + int renderersWithOverridesCount = in.readInt(); + SparseArray> selectionOverrides = + new SparseArray<>(renderersWithOverridesCount); + for (int i = 0; i < renderersWithOverridesCount; i++) { + int rendererIndex = in.readInt(); + int overrideCount = in.readInt(); + Map overrides = + new HashMap<>(overrideCount); + for (int j = 0; j < overrideCount; j++) { + TrackGroupArray trackGroups = + Assertions.checkNotNull(in.readParcelable(TrackGroupArray.class.getClassLoader())); + @Nullable + SelectionOverride override = in.readParcelable(SelectionOverride.class.getClassLoader()); + overrides.put(trackGroups, override); + } + selectionOverrides.put(rendererIndex, overrides); + } + return selectionOverrides; + } + + private static void writeSelectionOverridesToParcel( + Parcel dest, + SparseArray> selectionOverrides) { + int renderersWithOverridesCount = selectionOverrides.size(); + dest.writeInt(renderersWithOverridesCount); + for (int i = 0; i < renderersWithOverridesCount; i++) { + int rendererIndex = selectionOverrides.keyAt(i); + Map overrides = + selectionOverrides.valueAt(i); + int overrideCount = overrides.size(); + dest.writeInt(rendererIndex); + dest.writeInt(overrideCount); + for (Map.Entry override : + overrides.entrySet()) { + dest.writeParcelable(override.getKey(), /* parcelableFlags= */ 0); + dest.writeParcelable(override.getValue(), /* parcelableFlags= */ 0); + } + } + } + + private static boolean areRendererDisabledFlagsEqual( + SparseBooleanArray first, SparseBooleanArray second) { + int firstSize = first.size(); + if (second.size() != firstSize) { + return false; + } + // Only true values are put into rendererDisabledFlags, so we don't need to compare values. + for (int indexInFirst = 0; indexInFirst < firstSize; indexInFirst++) { + if (second.indexOfKey(first.keyAt(indexInFirst)) < 0) { + return false; + } + } + return true; + } + + private static boolean areSelectionOverridesEqual( + SparseArray> first, + SparseArray> second) { + int firstSize = first.size(); + if (second.size() != firstSize) { + return false; + } + for (int indexInFirst = 0; indexInFirst < firstSize; indexInFirst++) { + int indexInSecond = second.indexOfKey(first.keyAt(indexInFirst)); + if (indexInSecond < 0 + || !areSelectionOverridesEqual( + first.valueAt(indexInFirst), second.valueAt(indexInSecond))) { + return false; + } + } + return true; + } + + private static boolean areSelectionOverridesEqual( + Map first, + Map second) { + int firstSize = first.size(); + if (second.size() != firstSize) { + return false; + } + for (Map.Entry firstEntry : + first.entrySet()) { + TrackGroupArray key = firstEntry.getKey(); + if (!second.containsKey(key) || !Util.areEqual(firstEntry.getValue(), second.get(key))) { + return false; + } + } + return true; + } + } + + /** A track selection override. */ + public static final class SelectionOverride implements Parcelable { + + public final int groupIndex; + public final int[] tracks; + public final int length; + public final int reason; + public final int data; + + /** + * @param groupIndex The overriding track group index. + * @param tracks The overriding track indices within the track group. + */ + public SelectionOverride(int groupIndex, int... tracks) { + this(groupIndex, tracks, C.SELECTION_REASON_MANUAL, /* data= */ 0); + } + + /** + * @param groupIndex The overriding track group index. + * @param tracks The overriding track indices within the track group. + * @param reason The reason for the override. One of the {@link C} SELECTION_REASON_ constants. + * @param data Optional data associated with this override. + */ + public SelectionOverride(int groupIndex, int[] tracks, int reason, int data) { + this.groupIndex = groupIndex; + this.tracks = Arrays.copyOf(tracks, tracks.length); + this.length = tracks.length; + this.reason = reason; + this.data = data; + Arrays.sort(this.tracks); + } + + /* package */ SelectionOverride(Parcel in) { + groupIndex = in.readInt(); + length = in.readByte(); + tracks = new int[length]; + in.readIntArray(tracks); + reason = in.readInt(); + data = in.readInt(); + } + + /** Returns whether this override contains the specified track index. */ + public boolean containsTrack(int track) { + for (int overrideTrack : tracks) { + if (overrideTrack == track) { + return true; + } + } + return false; + } + + @Override + public int hashCode() { + int hash = 31 * groupIndex + Arrays.hashCode(tracks); + hash = 31 * hash + reason; + return 31 * hash + data; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + SelectionOverride other = (SelectionOverride) obj; + return groupIndex == other.groupIndex + && Arrays.equals(tracks, other.tracks) + && reason == other.reason + && data == other.data; + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeInt(groupIndex); + dest.writeInt(tracks.length); + dest.writeIntArray(tracks); + dest.writeInt(reason); + dest.writeInt(data); + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + + @Override + public SelectionOverride createFromParcel(Parcel in) { + return new SelectionOverride(in); + } + + @Override + public SelectionOverride[] newArray(int size) { + return new SelectionOverride[size]; + } + }; + } + + /** + * If a dimension (i.e. width or height) of a video is greater or equal to this fraction of the + * corresponding viewport dimension, then the video is considered as filling the viewport (in that + * dimension). + */ + private static final float FRACTION_TO_CONSIDER_FULLSCREEN = 0.98f; + private static final int[] NO_TRACKS = new int[0]; + private static final int WITHIN_RENDERER_CAPABILITIES_BONUS = 1000; + + private final TrackSelection.Factory trackSelectionFactory; + private final AtomicReference parametersReference; + + private boolean allowMultipleAdaptiveSelections; + + /** @deprecated Use {@link #DefaultTrackSelector(Context)} instead. */ + @Deprecated + @SuppressWarnings("deprecation") + public DefaultTrackSelector() { + this(new AdaptiveTrackSelection.Factory()); + } + + /** + * @deprecated Use {@link #DefaultTrackSelector(Context)} instead. The bandwidth meter should be + * passed directly to the player in {@link + * com.google.android.exoplayer2.SimpleExoPlayer.Builder}. + */ + @Deprecated + @SuppressWarnings("deprecation") + public DefaultTrackSelector(BandwidthMeter bandwidthMeter) { + this(new AdaptiveTrackSelection.Factory(bandwidthMeter)); + } + + /** @deprecated Use {@link #DefaultTrackSelector(Context, TrackSelection.Factory)}. */ + @Deprecated + public DefaultTrackSelector(TrackSelection.Factory trackSelectionFactory) { + this(Parameters.DEFAULT_WITHOUT_CONTEXT, trackSelectionFactory); + } + + /** @param context Any {@link Context}. */ + public DefaultTrackSelector(Context context) { + this(context, new AdaptiveTrackSelection.Factory()); + } + + /** + * @param context Any {@link Context}. + * @param trackSelectionFactory A factory for {@link TrackSelection}s. + */ + public DefaultTrackSelector(Context context, TrackSelection.Factory trackSelectionFactory) { + this(Parameters.getDefaults(context), trackSelectionFactory); + } + + /** + * @param parameters Initial {@link Parameters}. + * @param trackSelectionFactory A factory for {@link TrackSelection}s. + */ + public DefaultTrackSelector(Parameters parameters, TrackSelection.Factory trackSelectionFactory) { + this.trackSelectionFactory = trackSelectionFactory; + parametersReference = new AtomicReference<>(parameters); + } + + /** + * Atomically sets the provided parameters for track selection. + * + * @param parameters The parameters for track selection. + */ + public void setParameters(Parameters parameters) { + Assertions.checkNotNull(parameters); + if (!parametersReference.getAndSet(parameters).equals(parameters)) { + invalidate(); + } + } + + /** + * Atomically sets the provided parameters for track selection. + * + * @param parametersBuilder A builder from which to obtain the parameters for track selection. + */ + public void setParameters(ParametersBuilder parametersBuilder) { + setParameters(parametersBuilder.build()); + } + + /** + * Gets the current selection parameters. + * + * @return The current selection parameters. + */ + public Parameters getParameters() { + return parametersReference.get(); + } + + /** Returns a new {@link ParametersBuilder} initialized with the current selection parameters. */ + public ParametersBuilder buildUponParameters() { + return getParameters().buildUpon(); + } + + /** @deprecated Use {@link ParametersBuilder#setRendererDisabled(int, boolean)}. */ + @Deprecated + public final void setRendererDisabled(int rendererIndex, boolean disabled) { + setParameters(buildUponParameters().setRendererDisabled(rendererIndex, disabled)); + } + + /** @deprecated Use {@link Parameters#getRendererDisabled(int)}. */ + @Deprecated + public final boolean getRendererDisabled(int rendererIndex) { + return getParameters().getRendererDisabled(rendererIndex); + } + + /** + * @deprecated Use {@link ParametersBuilder#setSelectionOverride(int, TrackGroupArray, + * SelectionOverride)}. + */ + @Deprecated + public final void setSelectionOverride( + int rendererIndex, TrackGroupArray groups, @Nullable SelectionOverride override) { + setParameters(buildUponParameters().setSelectionOverride(rendererIndex, groups, override)); + } + + /** @deprecated Use {@link Parameters#hasSelectionOverride(int, TrackGroupArray)}. */ + @Deprecated + public final boolean hasSelectionOverride(int rendererIndex, TrackGroupArray groups) { + return getParameters().hasSelectionOverride(rendererIndex, groups); + } + + /** @deprecated Use {@link Parameters#getSelectionOverride(int, TrackGroupArray)}. */ + @Deprecated + @Nullable + public final SelectionOverride getSelectionOverride(int rendererIndex, TrackGroupArray groups) { + return getParameters().getSelectionOverride(rendererIndex, groups); + } + + /** @deprecated Use {@link ParametersBuilder#clearSelectionOverride(int, TrackGroupArray)}. */ + @Deprecated + public final void clearSelectionOverride(int rendererIndex, TrackGroupArray groups) { + setParameters(buildUponParameters().clearSelectionOverride(rendererIndex, groups)); + } + + /** @deprecated Use {@link ParametersBuilder#clearSelectionOverrides(int)}. */ + @Deprecated + public final void clearSelectionOverrides(int rendererIndex) { + setParameters(buildUponParameters().clearSelectionOverrides(rendererIndex)); + } + + /** @deprecated Use {@link ParametersBuilder#clearSelectionOverrides()}. */ + @Deprecated + public final void clearSelectionOverrides() { + setParameters(buildUponParameters().clearSelectionOverrides()); + } + + /** @deprecated Use {@link ParametersBuilder#setTunnelingAudioSessionId(int)}. */ + @Deprecated + public void setTunnelingAudioSessionId(int tunnelingAudioSessionId) { + setParameters(buildUponParameters().setTunnelingAudioSessionId(tunnelingAudioSessionId)); + } + + /** + * Allows the creation of multiple adaptive track selections. + * + *

This method is experimental, and will be renamed or removed in a future release. + */ + public void experimental_allowMultipleAdaptiveSelections() { + this.allowMultipleAdaptiveSelections = true; + } + + // MappingTrackSelector implementation. + + @Override + protected final Pair<@NullableType RendererConfiguration[], @NullableType TrackSelection[]> + selectTracks( + MappedTrackInfo mappedTrackInfo, + @Capabilities int[][][] rendererFormatSupports, + @AdaptiveSupport int[] rendererMixedMimeTypeAdaptationSupports) + throws ExoPlaybackException { + Parameters params = parametersReference.get(); + int rendererCount = mappedTrackInfo.getRendererCount(); + TrackSelection.@NullableType Definition[] definitions = + selectAllTracks( + mappedTrackInfo, + rendererFormatSupports, + rendererMixedMimeTypeAdaptationSupports, + params); + + // Apply track disabling and overriding. + for (int i = 0; i < rendererCount; i++) { + if (params.getRendererDisabled(i)) { + definitions[i] = null; + continue; + } + TrackGroupArray rendererTrackGroups = mappedTrackInfo.getTrackGroups(i); + if (params.hasSelectionOverride(i, rendererTrackGroups)) { + SelectionOverride override = params.getSelectionOverride(i, rendererTrackGroups); + definitions[i] = + override == null + ? null + : new TrackSelection.Definition( + rendererTrackGroups.get(override.groupIndex), + override.tracks, + override.reason, + override.data); + } + } + + @NullableType + TrackSelection[] rendererTrackSelections = + trackSelectionFactory.createTrackSelections(definitions, getBandwidthMeter()); + + // Initialize the renderer configurations to the default configuration for all renderers with + // selections, and null otherwise. + @NullableType RendererConfiguration[] rendererConfigurations = + new RendererConfiguration[rendererCount]; + for (int i = 0; i < rendererCount; i++) { + boolean forceRendererDisabled = params.getRendererDisabled(i); + boolean rendererEnabled = + !forceRendererDisabled + && (mappedTrackInfo.getRendererType(i) == C.TRACK_TYPE_NONE + || rendererTrackSelections[i] != null); + rendererConfigurations[i] = rendererEnabled ? RendererConfiguration.DEFAULT : null; + } + + // Configure audio and video renderers to use tunneling if appropriate. + maybeConfigureRenderersForTunneling( + mappedTrackInfo, + rendererFormatSupports, + rendererConfigurations, + rendererTrackSelections, + params.tunnelingAudioSessionId); + + return Pair.create(rendererConfigurations, rendererTrackSelections); + } + + // Track selection prior to overrides and disabled flags being applied. + + /** + * Called from {@link #selectTracks(MappedTrackInfo, int[][][], int[])} to make a track selection + * for each renderer, prior to overrides and disabled flags being applied. + * + *

The implementation should not account for overrides and disabled flags. Track selections + * generated by this method will be overridden to account for these properties. + * + * @param mappedTrackInfo Mapped track information. + * @param rendererFormatSupports The {@link Capabilities} for each mapped track, indexed by + * renderer, track group and track (in that order). + * @param rendererMixedMimeTypeAdaptationSupports The {@link AdaptiveSupport} for mixed MIME type + * adaptation for the renderer. + * @return The {@link TrackSelection.Definition}s for the renderers. A null entry indicates no + * selection was made. + * @throws ExoPlaybackException If an error occurs while selecting the tracks. + */ + protected TrackSelection.@NullableType Definition[] selectAllTracks( + MappedTrackInfo mappedTrackInfo, + @Capabilities int[][][] rendererFormatSupports, + @AdaptiveSupport int[] rendererMixedMimeTypeAdaptationSupports, + Parameters params) + throws ExoPlaybackException { + int rendererCount = mappedTrackInfo.getRendererCount(); + TrackSelection.@NullableType Definition[] definitions = + new TrackSelection.Definition[rendererCount]; + + boolean seenVideoRendererWithMappedTracks = false; + boolean selectedVideoTracks = false; + for (int i = 0; i < rendererCount; i++) { + if (C.TRACK_TYPE_VIDEO == mappedTrackInfo.getRendererType(i)) { + if (!selectedVideoTracks) { + definitions[i] = + selectVideoTrack( + mappedTrackInfo.getTrackGroups(i), + rendererFormatSupports[i], + rendererMixedMimeTypeAdaptationSupports[i], + params, + /* enableAdaptiveTrackSelection= */ true); + selectedVideoTracks = definitions[i] != null; + } + seenVideoRendererWithMappedTracks |= mappedTrackInfo.getTrackGroups(i).length > 0; + } + } + + AudioTrackScore selectedAudioTrackScore = null; + String selectedAudioLanguage = null; + int selectedAudioRendererIndex = C.INDEX_UNSET; + for (int i = 0; i < rendererCount; i++) { + if (C.TRACK_TYPE_AUDIO == mappedTrackInfo.getRendererType(i)) { + boolean enableAdaptiveTrackSelection = + allowMultipleAdaptiveSelections || !seenVideoRendererWithMappedTracks; + Pair audioSelection = + selectAudioTrack( + mappedTrackInfo.getTrackGroups(i), + rendererFormatSupports[i], + rendererMixedMimeTypeAdaptationSupports[i], + params, + enableAdaptiveTrackSelection); + if (audioSelection != null + && (selectedAudioTrackScore == null + || audioSelection.second.compareTo(selectedAudioTrackScore) > 0)) { + if (selectedAudioRendererIndex != C.INDEX_UNSET) { + // We've already made a selection for another audio renderer, but it had a lower + // score. Clear the selection for that renderer. + definitions[selectedAudioRendererIndex] = null; + } + TrackSelection.Definition definition = audioSelection.first; + definitions[i] = definition; + // We assume that audio tracks in the same group have matching language. + selectedAudioLanguage = definition.group.getFormat(definition.tracks[0]).language; + selectedAudioTrackScore = audioSelection.second; + selectedAudioRendererIndex = i; + } + } + } + + TextTrackScore selectedTextTrackScore = null; + int selectedTextRendererIndex = C.INDEX_UNSET; + for (int i = 0; i < rendererCount; i++) { + int trackType = mappedTrackInfo.getRendererType(i); + switch (trackType) { + case C.TRACK_TYPE_VIDEO: + case C.TRACK_TYPE_AUDIO: + // Already done. Do nothing. + break; + case C.TRACK_TYPE_TEXT: + Pair textSelection = + selectTextTrack( + mappedTrackInfo.getTrackGroups(i), + rendererFormatSupports[i], + params, + selectedAudioLanguage); + if (textSelection != null + && (selectedTextTrackScore == null + || textSelection.second.compareTo(selectedTextTrackScore) > 0)) { + if (selectedTextRendererIndex != C.INDEX_UNSET) { + // We've already made a selection for another text renderer, but it had a lower score. + // Clear the selection for that renderer. + definitions[selectedTextRendererIndex] = null; + } + definitions[i] = textSelection.first; + selectedTextTrackScore = textSelection.second; + selectedTextRendererIndex = i; + } + break; + default: + definitions[i] = + selectOtherTrack( + trackType, mappedTrackInfo.getTrackGroups(i), rendererFormatSupports[i], params); + break; + } + } + + return definitions; + } + + // Video track selection implementation. + + /** + * Called by {@link #selectAllTracks(MappedTrackInfo, int[][][], int[], Parameters)} to create a + * {@link TrackSelection} for a video renderer. + * + * @param groups The {@link TrackGroupArray} mapped to the renderer. + * @param formatSupports The {@link Capabilities} for each mapped track, indexed by renderer, + * track group and track (in that order). + * @param mixedMimeTypeAdaptationSupports The {@link AdaptiveSupport} for mixed MIME type + * adaptation for the renderer. + * @param params The selector's current constraint parameters. + * @param enableAdaptiveTrackSelection Whether adaptive track selection is allowed. + * @return The {@link TrackSelection.Definition} for the renderer, or null if no selection was + * made. + * @throws ExoPlaybackException If an error occurs while selecting the tracks. + */ + @Nullable + protected TrackSelection.Definition selectVideoTrack( + TrackGroupArray groups, + @Capabilities int[][] formatSupports, + @AdaptiveSupport int mixedMimeTypeAdaptationSupports, + Parameters params, + boolean enableAdaptiveTrackSelection) + throws ExoPlaybackException { + TrackSelection.Definition definition = null; + if (!params.forceHighestSupportedBitrate + && !params.forceLowestBitrate + && enableAdaptiveTrackSelection) { + definition = + selectAdaptiveVideoTrack(groups, formatSupports, mixedMimeTypeAdaptationSupports, params); + } + if (definition == null) { + definition = selectFixedVideoTrack(groups, formatSupports, params); + } + return definition; + } + + @Nullable + private static TrackSelection.Definition selectAdaptiveVideoTrack( + TrackGroupArray groups, + @Capabilities int[][] formatSupport, + @AdaptiveSupport int mixedMimeTypeAdaptationSupports, + Parameters params) { + int requiredAdaptiveSupport = + params.allowVideoNonSeamlessAdaptiveness + ? (RendererCapabilities.ADAPTIVE_NOT_SEAMLESS | RendererCapabilities.ADAPTIVE_SEAMLESS) + : RendererCapabilities.ADAPTIVE_SEAMLESS; + boolean allowMixedMimeTypes = + params.allowVideoMixedMimeTypeAdaptiveness + && (mixedMimeTypeAdaptationSupports & requiredAdaptiveSupport) != 0; + for (int i = 0; i < groups.length; i++) { + TrackGroup group = groups.get(i); + int[] adaptiveTracks = + getAdaptiveVideoTracksForGroup( + group, + formatSupport[i], + allowMixedMimeTypes, + requiredAdaptiveSupport, + params.maxVideoWidth, + params.maxVideoHeight, + params.maxVideoFrameRate, + params.maxVideoBitrate, + params.viewportWidth, + params.viewportHeight, + params.viewportOrientationMayChange); + if (adaptiveTracks.length > 0) { + return new TrackSelection.Definition(group, adaptiveTracks); + } + } + return null; + } + + private static int[] getAdaptiveVideoTracksForGroup( + TrackGroup group, + @Capabilities int[] formatSupport, + boolean allowMixedMimeTypes, + int requiredAdaptiveSupport, + int maxVideoWidth, + int maxVideoHeight, + int maxVideoFrameRate, + int maxVideoBitrate, + int viewportWidth, + int viewportHeight, + boolean viewportOrientationMayChange) { + if (group.length < 2) { + return NO_TRACKS; + } + + List selectedTrackIndices = getViewportFilteredTrackIndices(group, viewportWidth, + viewportHeight, viewportOrientationMayChange); + if (selectedTrackIndices.size() < 2) { + return NO_TRACKS; + } + + String selectedMimeType = null; + if (!allowMixedMimeTypes) { + // Select the mime type for which we have the most adaptive tracks. + HashSet<@NullableType String> seenMimeTypes = new HashSet<>(); + int selectedMimeTypeTrackCount = 0; + for (int i = 0; i < selectedTrackIndices.size(); i++) { + int trackIndex = selectedTrackIndices.get(i); + String sampleMimeType = group.getFormat(trackIndex).sampleMimeType; + if (seenMimeTypes.add(sampleMimeType)) { + int countForMimeType = + getAdaptiveVideoTrackCountForMimeType( + group, + formatSupport, + requiredAdaptiveSupport, + sampleMimeType, + maxVideoWidth, + maxVideoHeight, + maxVideoFrameRate, + maxVideoBitrate, + selectedTrackIndices); + if (countForMimeType > selectedMimeTypeTrackCount) { + selectedMimeType = sampleMimeType; + selectedMimeTypeTrackCount = countForMimeType; + } + } + } + } + + // Filter by the selected mime type. + filterAdaptiveVideoTrackCountForMimeType( + group, + formatSupport, + requiredAdaptiveSupport, + selectedMimeType, + maxVideoWidth, + maxVideoHeight, + maxVideoFrameRate, + maxVideoBitrate, + selectedTrackIndices); + + return selectedTrackIndices.size() < 2 ? NO_TRACKS : Util.toArray(selectedTrackIndices); + } + + private static int getAdaptiveVideoTrackCountForMimeType( + TrackGroup group, + @Capabilities int[] formatSupport, + int requiredAdaptiveSupport, + @Nullable String mimeType, + int maxVideoWidth, + int maxVideoHeight, + int maxVideoFrameRate, + int maxVideoBitrate, + List selectedTrackIndices) { + int adaptiveTrackCount = 0; + for (int i = 0; i < selectedTrackIndices.size(); i++) { + int trackIndex = selectedTrackIndices.get(i); + if (isSupportedAdaptiveVideoTrack( + group.getFormat(trackIndex), + mimeType, + formatSupport[trackIndex], + requiredAdaptiveSupport, + maxVideoWidth, + maxVideoHeight, + maxVideoFrameRate, + maxVideoBitrate)) { + adaptiveTrackCount++; + } + } + return adaptiveTrackCount; + } + + private static void filterAdaptiveVideoTrackCountForMimeType( + TrackGroup group, + @Capabilities int[] formatSupport, + int requiredAdaptiveSupport, + @Nullable String mimeType, + int maxVideoWidth, + int maxVideoHeight, + int maxVideoFrameRate, + int maxVideoBitrate, + List selectedTrackIndices) { + for (int i = selectedTrackIndices.size() - 1; i >= 0; i--) { + int trackIndex = selectedTrackIndices.get(i); + if (!isSupportedAdaptiveVideoTrack( + group.getFormat(trackIndex), + mimeType, + formatSupport[trackIndex], + requiredAdaptiveSupport, + maxVideoWidth, + maxVideoHeight, + maxVideoFrameRate, + maxVideoBitrate)) { + selectedTrackIndices.remove(i); + } + } + } + + private static boolean isSupportedAdaptiveVideoTrack( + Format format, + @Nullable String mimeType, + @Capabilities int formatSupport, + int requiredAdaptiveSupport, + int maxVideoWidth, + int maxVideoHeight, + int maxVideoFrameRate, + int maxVideoBitrate) { + return isSupported(formatSupport, false) + && ((formatSupport & requiredAdaptiveSupport) != 0) + && (mimeType == null || Util.areEqual(format.sampleMimeType, mimeType)) + && (format.width == Format.NO_VALUE || format.width <= maxVideoWidth) + && (format.height == Format.NO_VALUE || format.height <= maxVideoHeight) + && (format.frameRate == Format.NO_VALUE || format.frameRate <= maxVideoFrameRate) + && (format.bitrate == Format.NO_VALUE || format.bitrate <= maxVideoBitrate); + } + + @Nullable + private static TrackSelection.Definition selectFixedVideoTrack( + TrackGroupArray groups, @Capabilities int[][] formatSupports, Parameters params) { + TrackGroup selectedGroup = null; + int selectedTrackIndex = 0; + int selectedTrackScore = 0; + int selectedBitrate = Format.NO_VALUE; + int selectedPixelCount = Format.NO_VALUE; + for (int groupIndex = 0; groupIndex < groups.length; groupIndex++) { + TrackGroup trackGroup = groups.get(groupIndex); + List selectedTrackIndices = getViewportFilteredTrackIndices(trackGroup, + params.viewportWidth, params.viewportHeight, params.viewportOrientationMayChange); + @Capabilities int[] trackFormatSupport = formatSupports[groupIndex]; + for (int trackIndex = 0; trackIndex < trackGroup.length; trackIndex++) { + if (isSupported(trackFormatSupport[trackIndex], + params.exceedRendererCapabilitiesIfNecessary)) { + Format format = trackGroup.getFormat(trackIndex); + boolean isWithinConstraints = + selectedTrackIndices.contains(trackIndex) + && (format.width == Format.NO_VALUE || format.width <= params.maxVideoWidth) + && (format.height == Format.NO_VALUE || format.height <= params.maxVideoHeight) + && (format.frameRate == Format.NO_VALUE + || format.frameRate <= params.maxVideoFrameRate) + && (format.bitrate == Format.NO_VALUE + || format.bitrate <= params.maxVideoBitrate); + if (!isWithinConstraints && !params.exceedVideoConstraintsIfNecessary) { + // Track should not be selected. + continue; + } + int trackScore = isWithinConstraints ? 2 : 1; + boolean isWithinCapabilities = isSupported(trackFormatSupport[trackIndex], false); + if (isWithinCapabilities) { + trackScore += WITHIN_RENDERER_CAPABILITIES_BONUS; + } + boolean selectTrack = trackScore > selectedTrackScore; + if (trackScore == selectedTrackScore) { + int bitrateComparison = compareFormatValues(format.bitrate, selectedBitrate); + if (params.forceLowestBitrate && bitrateComparison != 0) { + // Use bitrate as a tie breaker, preferring the lower bitrate. + selectTrack = bitrateComparison < 0; + } else { + // Use the pixel count as a tie breaker (or bitrate if pixel counts are tied). If + // we're within constraints prefer a higher pixel count (or bitrate), else prefer a + // lower count (or bitrate). If still tied then prefer the first track (i.e. the one + // that's already selected). + int formatPixelCount = format.getPixelCount(); + int comparisonResult = formatPixelCount != selectedPixelCount + ? compareFormatValues(formatPixelCount, selectedPixelCount) + : compareFormatValues(format.bitrate, selectedBitrate); + selectTrack = isWithinCapabilities && isWithinConstraints + ? comparisonResult > 0 : comparisonResult < 0; + } + } + if (selectTrack) { + selectedGroup = trackGroup; + selectedTrackIndex = trackIndex; + selectedTrackScore = trackScore; + selectedBitrate = format.bitrate; + selectedPixelCount = format.getPixelCount(); + } + } + } + } + return selectedGroup == null + ? null + : new TrackSelection.Definition(selectedGroup, selectedTrackIndex); + } + + // Audio track selection implementation. + + /** + * Called by {@link #selectAllTracks(MappedTrackInfo, int[][][], int[], Parameters)} to create a + * {@link TrackSelection} for an audio renderer. + * + * @param groups The {@link TrackGroupArray} mapped to the renderer. + * @param formatSupports The {@link Capabilities} for each mapped track, indexed by renderer, + * track group and track (in that order). + * @param mixedMimeTypeAdaptationSupports The {@link AdaptiveSupport} for mixed MIME type + * adaptation for the renderer. + * @param params The selector's current constraint parameters. + * @param enableAdaptiveTrackSelection Whether adaptive track selection is allowed. + * @return The {@link TrackSelection.Definition} and corresponding {@link AudioTrackScore}, or + * null if no selection was made. + * @throws ExoPlaybackException If an error occurs while selecting the tracks. + */ + @SuppressWarnings("unused") + @Nullable + protected Pair selectAudioTrack( + TrackGroupArray groups, + @Capabilities int[][] formatSupports, + @AdaptiveSupport int mixedMimeTypeAdaptationSupports, + Parameters params, + boolean enableAdaptiveTrackSelection) + throws ExoPlaybackException { + int selectedTrackIndex = C.INDEX_UNSET; + int selectedGroupIndex = C.INDEX_UNSET; + AudioTrackScore selectedTrackScore = null; + for (int groupIndex = 0; groupIndex < groups.length; groupIndex++) { + TrackGroup trackGroup = groups.get(groupIndex); + @Capabilities int[] trackFormatSupport = formatSupports[groupIndex]; + for (int trackIndex = 0; trackIndex < trackGroup.length; trackIndex++) { + if (isSupported(trackFormatSupport[trackIndex], + params.exceedRendererCapabilitiesIfNecessary)) { + Format format = trackGroup.getFormat(trackIndex); + AudioTrackScore trackScore = + new AudioTrackScore(format, params, trackFormatSupport[trackIndex]); + if (!trackScore.isWithinConstraints && !params.exceedAudioConstraintsIfNecessary) { + // Track should not be selected. + continue; + } + if (selectedTrackScore == null || trackScore.compareTo(selectedTrackScore) > 0) { + selectedGroupIndex = groupIndex; + selectedTrackIndex = trackIndex; + selectedTrackScore = trackScore; + } + } + } + } + + if (selectedGroupIndex == C.INDEX_UNSET) { + return null; + } + + TrackGroup selectedGroup = groups.get(selectedGroupIndex); + + TrackSelection.Definition definition = null; + if (!params.forceHighestSupportedBitrate + && !params.forceLowestBitrate + && enableAdaptiveTrackSelection) { + // If the group of the track with the highest score allows it, try to enable adaptation. + int[] adaptiveTracks = + getAdaptiveAudioTracks( + selectedGroup, + formatSupports[selectedGroupIndex], + params.maxAudioBitrate, + params.allowAudioMixedMimeTypeAdaptiveness, + params.allowAudioMixedSampleRateAdaptiveness, + params.allowAudioMixedChannelCountAdaptiveness); + if (adaptiveTracks.length > 0) { + definition = new TrackSelection.Definition(selectedGroup, adaptiveTracks); + } + } + if (definition == null) { + // We didn't make an adaptive selection, so make a fixed one instead. + definition = new TrackSelection.Definition(selectedGroup, selectedTrackIndex); + } + + return Pair.create(definition, Assertions.checkNotNull(selectedTrackScore)); + } + + private static int[] getAdaptiveAudioTracks( + TrackGroup group, + @Capabilities int[] formatSupport, + int maxAudioBitrate, + boolean allowMixedMimeTypeAdaptiveness, + boolean allowMixedSampleRateAdaptiveness, + boolean allowAudioMixedChannelCountAdaptiveness) { + int selectedConfigurationTrackCount = 0; + AudioConfigurationTuple selectedConfiguration = null; + HashSet seenConfigurationTuples = new HashSet<>(); + for (int i = 0; i < group.length; i++) { + Format format = group.getFormat(i); + AudioConfigurationTuple configuration = + new AudioConfigurationTuple( + format.channelCount, format.sampleRate, format.sampleMimeType); + if (seenConfigurationTuples.add(configuration)) { + int configurationCount = + getAdaptiveAudioTrackCount( + group, + formatSupport, + configuration, + maxAudioBitrate, + allowMixedMimeTypeAdaptiveness, + allowMixedSampleRateAdaptiveness, + allowAudioMixedChannelCountAdaptiveness); + if (configurationCount > selectedConfigurationTrackCount) { + selectedConfiguration = configuration; + selectedConfigurationTrackCount = configurationCount; + } + } + } + + if (selectedConfigurationTrackCount > 1) { + Assertions.checkNotNull(selectedConfiguration); + int[] adaptiveIndices = new int[selectedConfigurationTrackCount]; + int index = 0; + for (int i = 0; i < group.length; i++) { + Format format = group.getFormat(i); + if (isSupportedAdaptiveAudioTrack( + format, + formatSupport[i], + selectedConfiguration, + maxAudioBitrate, + allowMixedMimeTypeAdaptiveness, + allowMixedSampleRateAdaptiveness, + allowAudioMixedChannelCountAdaptiveness)) { + adaptiveIndices[index++] = i; + } + } + return adaptiveIndices; + } + return NO_TRACKS; + } + + private static int getAdaptiveAudioTrackCount( + TrackGroup group, + @Capabilities int[] formatSupport, + AudioConfigurationTuple configuration, + int maxAudioBitrate, + boolean allowMixedMimeTypeAdaptiveness, + boolean allowMixedSampleRateAdaptiveness, + boolean allowAudioMixedChannelCountAdaptiveness) { + int count = 0; + for (int i = 0; i < group.length; i++) { + if (isSupportedAdaptiveAudioTrack( + group.getFormat(i), + formatSupport[i], + configuration, + maxAudioBitrate, + allowMixedMimeTypeAdaptiveness, + allowMixedSampleRateAdaptiveness, + allowAudioMixedChannelCountAdaptiveness)) { + count++; + } + } + return count; + } + + private static boolean isSupportedAdaptiveAudioTrack( + Format format, + @Capabilities int formatSupport, + AudioConfigurationTuple configuration, + int maxAudioBitrate, + boolean allowMixedMimeTypeAdaptiveness, + boolean allowMixedSampleRateAdaptiveness, + boolean allowAudioMixedChannelCountAdaptiveness) { + return isSupported(formatSupport, false) + && (format.bitrate == Format.NO_VALUE || format.bitrate <= maxAudioBitrate) + && (allowAudioMixedChannelCountAdaptiveness + || (format.channelCount != Format.NO_VALUE + && format.channelCount == configuration.channelCount)) + && (allowMixedMimeTypeAdaptiveness + || (format.sampleMimeType != null + && TextUtils.equals(format.sampleMimeType, configuration.mimeType))) + && (allowMixedSampleRateAdaptiveness + || (format.sampleRate != Format.NO_VALUE + && format.sampleRate == configuration.sampleRate)); + } + + // Text track selection implementation. + + /** + * Called by {@link #selectAllTracks(MappedTrackInfo, int[][][], int[], Parameters)} to create a + * {@link TrackSelection} for a text renderer. + * + * @param groups The {@link TrackGroupArray} mapped to the renderer. + * @param formatSupport The {@link Capabilities} for each mapped track, indexed by renderer, track + * group and track (in that order). + * @param params The selector's current constraint parameters. + * @param selectedAudioLanguage The language of the selected audio track. May be null if the + * selected text track declares no language or no text track was selected. + * @return The {@link TrackSelection.Definition} and corresponding {@link TextTrackScore}, or null + * if no selection was made. + * @throws ExoPlaybackException If an error occurs while selecting the tracks. + */ + @Nullable + protected Pair selectTextTrack( + TrackGroupArray groups, + @Capabilities int[][] formatSupport, + Parameters params, + @Nullable String selectedAudioLanguage) + throws ExoPlaybackException { + TrackGroup selectedGroup = null; + int selectedTrackIndex = C.INDEX_UNSET; + TextTrackScore selectedTrackScore = null; + for (int groupIndex = 0; groupIndex < groups.length; groupIndex++) { + TrackGroup trackGroup = groups.get(groupIndex); + @Capabilities int[] trackFormatSupport = formatSupport[groupIndex]; + for (int trackIndex = 0; trackIndex < trackGroup.length; trackIndex++) { + if (isSupported(trackFormatSupport[trackIndex], + params.exceedRendererCapabilitiesIfNecessary)) { + Format format = trackGroup.getFormat(trackIndex); + TextTrackScore trackScore = + new TextTrackScore( + format, params, trackFormatSupport[trackIndex], selectedAudioLanguage); + if (trackScore.isWithinConstraints + && (selectedTrackScore == null || trackScore.compareTo(selectedTrackScore) > 0)) { + selectedGroup = trackGroup; + selectedTrackIndex = trackIndex; + selectedTrackScore = trackScore; + } + } + } + } + return selectedGroup == null + ? null + : Pair.create( + new TrackSelection.Definition(selectedGroup, selectedTrackIndex), + Assertions.checkNotNull(selectedTrackScore)); + } + + // General track selection methods. + + /** + * Called by {@link #selectAllTracks(MappedTrackInfo, int[][][], int[], Parameters)} to create a + * {@link TrackSelection} for a renderer whose type is neither video, audio or text. + * + * @param trackType The type of the renderer. + * @param groups The {@link TrackGroupArray} mapped to the renderer. + * @param formatSupport The {@link Capabilities} for each mapped track, indexed by renderer, track + * group and track (in that order). + * @param params The selector's current constraint parameters. + * @return The {@link TrackSelection} for the renderer, or null if no selection was made. + * @throws ExoPlaybackException If an error occurs while selecting the tracks. + */ + @Nullable + protected TrackSelection.Definition selectOtherTrack( + int trackType, TrackGroupArray groups, @Capabilities int[][] formatSupport, Parameters params) + throws ExoPlaybackException { + TrackGroup selectedGroup = null; + int selectedTrackIndex = 0; + int selectedTrackScore = 0; + for (int groupIndex = 0; groupIndex < groups.length; groupIndex++) { + TrackGroup trackGroup = groups.get(groupIndex); + @Capabilities int[] trackFormatSupport = formatSupport[groupIndex]; + for (int trackIndex = 0; trackIndex < trackGroup.length; trackIndex++) { + if (isSupported(trackFormatSupport[trackIndex], + params.exceedRendererCapabilitiesIfNecessary)) { + Format format = trackGroup.getFormat(trackIndex); + boolean isDefault = (format.selectionFlags & C.SELECTION_FLAG_DEFAULT) != 0; + int trackScore = isDefault ? 2 : 1; + if (isSupported(trackFormatSupport[trackIndex], false)) { + trackScore += WITHIN_RENDERER_CAPABILITIES_BONUS; + } + if (trackScore > selectedTrackScore) { + selectedGroup = trackGroup; + selectedTrackIndex = trackIndex; + selectedTrackScore = trackScore; + } + } + } + } + return selectedGroup == null + ? null + : new TrackSelection.Definition(selectedGroup, selectedTrackIndex); + } + + // Utility methods. + + /** + * Determines whether tunneling should be enabled, replacing {@link RendererConfiguration}s in + * {@code rendererConfigurations} with configurations that enable tunneling on the appropriate + * renderers if so. + * + * @param mappedTrackInfo Mapped track information. + * @param renderererFormatSupports The {@link Capabilities} for each mapped track, indexed by + * renderer, track group and track (in that order). + * @param rendererConfigurations The renderer configurations. Configurations may be replaced with + * ones that enable tunneling as a result of this call. + * @param trackSelections The renderer track selections. + * @param tunnelingAudioSessionId The audio session id to use when tunneling, or {@link + * C#AUDIO_SESSION_ID_UNSET} if tunneling should not be enabled. + */ + private static void maybeConfigureRenderersForTunneling( + MappedTrackInfo mappedTrackInfo, + @Capabilities int[][][] renderererFormatSupports, + @NullableType RendererConfiguration[] rendererConfigurations, + @NullableType TrackSelection[] trackSelections, + int tunnelingAudioSessionId) { + if (tunnelingAudioSessionId == C.AUDIO_SESSION_ID_UNSET) { + return; + } + // Check whether we can enable tunneling. To enable tunneling we require exactly one audio and + // one video renderer to support tunneling and have a selection. + int tunnelingAudioRendererIndex = -1; + int tunnelingVideoRendererIndex = -1; + boolean enableTunneling = true; + for (int i = 0; i < mappedTrackInfo.getRendererCount(); i++) { + int rendererType = mappedTrackInfo.getRendererType(i); + TrackSelection trackSelection = trackSelections[i]; + if ((rendererType == C.TRACK_TYPE_AUDIO || rendererType == C.TRACK_TYPE_VIDEO) + && trackSelection != null) { + if (rendererSupportsTunneling( + renderererFormatSupports[i], mappedTrackInfo.getTrackGroups(i), trackSelection)) { + if (rendererType == C.TRACK_TYPE_AUDIO) { + if (tunnelingAudioRendererIndex != -1) { + enableTunneling = false; + break; + } else { + tunnelingAudioRendererIndex = i; + } + } else { + if (tunnelingVideoRendererIndex != -1) { + enableTunneling = false; + break; + } else { + tunnelingVideoRendererIndex = i; + } + } + } + } + } + enableTunneling &= tunnelingAudioRendererIndex != -1 && tunnelingVideoRendererIndex != -1; + if (enableTunneling) { + RendererConfiguration tunnelingRendererConfiguration = + new RendererConfiguration(tunnelingAudioSessionId); + rendererConfigurations[tunnelingAudioRendererIndex] = tunnelingRendererConfiguration; + rendererConfigurations[tunnelingVideoRendererIndex] = tunnelingRendererConfiguration; + } + } + + /** + * Returns whether a renderer supports tunneling for a {@link TrackSelection}. + * + * @param formatSupports The {@link Capabilities} for each track, indexed by group index and track + * index (in that order). + * @param trackGroups The {@link TrackGroupArray}s for the renderer. + * @param selection The track selection. + * @return Whether the renderer supports tunneling for the {@link TrackSelection}. + */ + private static boolean rendererSupportsTunneling( + @Capabilities int[][] formatSupports, TrackGroupArray trackGroups, TrackSelection selection) { + if (selection == null) { + return false; + } + int trackGroupIndex = trackGroups.indexOf(selection.getTrackGroup()); + for (int i = 0; i < selection.length(); i++) { + @Capabilities + int trackFormatSupport = formatSupports[trackGroupIndex][selection.getIndexInTrackGroup(i)]; + if (RendererCapabilities.getTunnelingSupport(trackFormatSupport) + != RendererCapabilities.TUNNELING_SUPPORTED) { + return false; + } + } + return true; + } + + /** + * Compares two format values for order. A known value is considered greater than {@link + * Format#NO_VALUE}. + * + * @param first The first value. + * @param second The second value. + * @return A negative integer if the first value is less than the second. Zero if they are equal. + * A positive integer if the first value is greater than the second. + */ + private static int compareFormatValues(int first, int second) { + return first == Format.NO_VALUE + ? (second == Format.NO_VALUE ? 0 : -1) + : (second == Format.NO_VALUE ? 1 : (first - second)); + } + + /** + * Returns true if the {@link FormatSupport} in the given {@link Capabilities} is {@link + * RendererCapabilities#FORMAT_HANDLED} or if {@code allowExceedsCapabilities} is set and the + * format support is {@link RendererCapabilities#FORMAT_EXCEEDS_CAPABILITIES}. + * + * @param formatSupport {@link Capabilities}. + * @param allowExceedsCapabilities Whether to return true if {@link FormatSupport} is {@link + * RendererCapabilities#FORMAT_EXCEEDS_CAPABILITIES}. + * @return True if {@link FormatSupport} is {@link RendererCapabilities#FORMAT_HANDLED}, or if + * {@code allowExceedsCapabilities} is set and the format support is {@link + * RendererCapabilities#FORMAT_EXCEEDS_CAPABILITIES}. + */ + protected static boolean isSupported( + @Capabilities int formatSupport, boolean allowExceedsCapabilities) { + @FormatSupport int maskedSupport = RendererCapabilities.getFormatSupport(formatSupport); + return maskedSupport == RendererCapabilities.FORMAT_HANDLED || (allowExceedsCapabilities + && maskedSupport == RendererCapabilities.FORMAT_EXCEEDS_CAPABILITIES); + } + + /** + * Normalizes the input string to null if it does not define a language, or returns it otherwise. + * + * @param language The string. + * @return The string, optionally normalized to null if it does not define a language. + */ + @Nullable + protected static String normalizeUndeterminedLanguageToNull(@Nullable String language) { + return TextUtils.isEmpty(language) || TextUtils.equals(language, C.LANGUAGE_UNDETERMINED) + ? null + : language; + } + + /** + * Returns a score for how well a language specified in a {@link Format} matches a given language. + * + * @param format The {@link Format}. + * @param language The language, or null. + * @param allowUndeterminedFormatLanguage Whether matches with an empty or undetermined format + * language tag are allowed. + * @return A score of 4 if the languages match fully, a score of 3 if the languages match partly, + * a score of 2 if the languages don't match but belong to the same main language, a score of + * 1 if the format language is undetermined and such a match is allowed, and a score of 0 if + * the languages don't match at all. + */ + protected static int getFormatLanguageScore( + Format format, @Nullable String language, boolean allowUndeterminedFormatLanguage) { + if (!TextUtils.isEmpty(language) && language.equals(format.language)) { + // Full literal match of non-empty languages, including matches of an explicit "und" query. + return 4; + } + language = normalizeUndeterminedLanguageToNull(language); + String formatLanguage = normalizeUndeterminedLanguageToNull(format.language); + if (formatLanguage == null || language == null) { + // At least one of the languages is undetermined. + return allowUndeterminedFormatLanguage && formatLanguage == null ? 1 : 0; + } + if (formatLanguage.startsWith(language) || language.startsWith(formatLanguage)) { + // Partial match where one language is a subset of the other (e.g. "zh-hans" and "zh-hans-hk") + return 3; + } + String formatMainLanguage = Util.splitAtFirst(formatLanguage, "-")[0]; + String queryMainLanguage = Util.splitAtFirst(language, "-")[0]; + if (formatMainLanguage.equals(queryMainLanguage)) { + // Partial match where only the main language tag is the same (e.g. "fr-fr" and "fr-ca") + return 2; + } + return 0; + } + + private static List getViewportFilteredTrackIndices(TrackGroup group, int viewportWidth, + int viewportHeight, boolean orientationMayChange) { + // Initially include all indices. + ArrayList selectedTrackIndices = new ArrayList<>(group.length); + for (int i = 0; i < group.length; i++) { + selectedTrackIndices.add(i); + } + + if (viewportWidth == Integer.MAX_VALUE || viewportHeight == Integer.MAX_VALUE) { + // Viewport dimensions not set. Return the full set of indices. + return selectedTrackIndices; + } + + int maxVideoPixelsToRetain = Integer.MAX_VALUE; + for (int i = 0; i < group.length; i++) { + Format format = group.getFormat(i); + // Keep track of the number of pixels of the selected format whose resolution is the + // smallest to exceed the maximum size at which it can be displayed within the viewport. + // We'll discard formats of higher resolution. + if (format.width > 0 && format.height > 0) { + Point maxVideoSizeInViewport = getMaxVideoSizeInViewport(orientationMayChange, + viewportWidth, viewportHeight, format.width, format.height); + int videoPixels = format.width * format.height; + if (format.width >= (int) (maxVideoSizeInViewport.x * FRACTION_TO_CONSIDER_FULLSCREEN) + && format.height >= (int) (maxVideoSizeInViewport.y * FRACTION_TO_CONSIDER_FULLSCREEN) + && videoPixels < maxVideoPixelsToRetain) { + maxVideoPixelsToRetain = videoPixels; + } + } + } + + // Filter out formats that exceed maxVideoPixelsToRetain. These formats have an unnecessarily + // high resolution given the size at which the video will be displayed within the viewport. Also + // filter out formats with unknown dimensions, since we have some whose dimensions are known. + if (maxVideoPixelsToRetain != Integer.MAX_VALUE) { + for (int i = selectedTrackIndices.size() - 1; i >= 0; i--) { + Format format = group.getFormat(selectedTrackIndices.get(i)); + int pixelCount = format.getPixelCount(); + if (pixelCount == Format.NO_VALUE || pixelCount > maxVideoPixelsToRetain) { + selectedTrackIndices.remove(i); + } + } + } + + return selectedTrackIndices; + } + + /** + * Given viewport dimensions and video dimensions, computes the maximum size of the video as it + * will be rendered to fit inside of the viewport. + */ + private static Point getMaxVideoSizeInViewport(boolean orientationMayChange, int viewportWidth, + int viewportHeight, int videoWidth, int videoHeight) { + if (orientationMayChange && (videoWidth > videoHeight) != (viewportWidth > viewportHeight)) { + // Rotation is allowed, and the video will be larger in the rotated viewport. + int tempViewportWidth = viewportWidth; + viewportWidth = viewportHeight; + viewportHeight = tempViewportWidth; + } + + if (videoWidth * viewportHeight >= videoHeight * viewportWidth) { + // Horizontal letter-boxing along top and bottom. + return new Point(viewportWidth, Util.ceilDivide(viewportWidth * videoHeight, videoWidth)); + } else { + // Vertical letter-boxing along edges. + return new Point(Util.ceilDivide(viewportHeight * videoWidth, videoHeight), viewportHeight); + } + } + + /** + * Compares two integers in a safe way avoiding potential overflow. + * + * @param first The first value. + * @param second The second value. + * @return A negative integer if the first value is less than the second. Zero if they are equal. + * A positive integer if the first value is greater than the second. + */ + private static int compareInts(int first, int second) { + return first > second ? 1 : (second > first ? -1 : 0); + } + + /** Represents how well an audio track matches the selection {@link Parameters}. */ + protected static final class AudioTrackScore implements Comparable { + + /** + * Whether the provided format is within the parameter constraints. If {@code false}, the format + * should not be selected. + */ + public final boolean isWithinConstraints; + + @Nullable private final String language; + private final Parameters parameters; + private final boolean isWithinRendererCapabilities; + private final int preferredLanguageScore; + private final int localeLanguageMatchIndex; + private final int localeLanguageScore; + private final boolean isDefaultSelectionFlag; + private final int channelCount; + private final int sampleRate; + private final int bitrate; + + public AudioTrackScore(Format format, Parameters parameters, @Capabilities int formatSupport) { + this.parameters = parameters; + this.language = normalizeUndeterminedLanguageToNull(format.language); + isWithinRendererCapabilities = isSupported(formatSupport, false); + preferredLanguageScore = + getFormatLanguageScore( + format, + parameters.preferredAudioLanguage, + /* allowUndeterminedFormatLanguage= */ false); + isDefaultSelectionFlag = (format.selectionFlags & C.SELECTION_FLAG_DEFAULT) != 0; + channelCount = format.channelCount; + sampleRate = format.sampleRate; + bitrate = format.bitrate; + isWithinConstraints = + (format.bitrate == Format.NO_VALUE || format.bitrate <= parameters.maxAudioBitrate) + && (format.channelCount == Format.NO_VALUE + || format.channelCount <= parameters.maxAudioChannelCount); + String[] localeLanguages = Util.getSystemLanguageCodes(); + int bestMatchIndex = Integer.MAX_VALUE; + int bestMatchScore = 0; + for (int i = 0; i < localeLanguages.length; i++) { + int score = + getFormatLanguageScore( + format, localeLanguages[i], /* allowUndeterminedFormatLanguage= */ false); + if (score > 0) { + bestMatchIndex = i; + bestMatchScore = score; + break; + } + } + localeLanguageMatchIndex = bestMatchIndex; + localeLanguageScore = bestMatchScore; + } + + /** + * Compares this score with another. + * + * @param other The other score to compare to. + * @return A positive integer if this score is better than the other. Zero if they are equal. A + * negative integer if this score is worse than the other. + */ + @Override + public int compareTo(AudioTrackScore other) { + if (this.isWithinRendererCapabilities != other.isWithinRendererCapabilities) { + return this.isWithinRendererCapabilities ? 1 : -1; + } + if (this.preferredLanguageScore != other.preferredLanguageScore) { + return compareInts(this.preferredLanguageScore, other.preferredLanguageScore); + } + if (this.isWithinConstraints != other.isWithinConstraints) { + return this.isWithinConstraints ? 1 : -1; + } + if (parameters.forceLowestBitrate) { + int bitrateComparison = compareFormatValues(bitrate, other.bitrate); + if (bitrateComparison != 0) { + return bitrateComparison > 0 ? -1 : 1; + } + } + if (this.isDefaultSelectionFlag != other.isDefaultSelectionFlag) { + return this.isDefaultSelectionFlag ? 1 : -1; + } + if (this.localeLanguageMatchIndex != other.localeLanguageMatchIndex) { + return -compareInts(this.localeLanguageMatchIndex, other.localeLanguageMatchIndex); + } + if (this.localeLanguageScore != other.localeLanguageScore) { + return compareInts(this.localeLanguageScore, other.localeLanguageScore); + } + // If the formats are within constraints and renderer capabilities then prefer higher values + // of channel count, sample rate and bit rate in that order. Otherwise, prefer lower values. + int resultSign = isWithinConstraints && isWithinRendererCapabilities ? 1 : -1; + if (this.channelCount != other.channelCount) { + return resultSign * compareInts(this.channelCount, other.channelCount); + } + if (this.sampleRate != other.sampleRate) { + return resultSign * compareInts(this.sampleRate, other.sampleRate); + } + if (Util.areEqual(this.language, other.language)) { + // Only compare bit rates of tracks with the same or unknown language. + return resultSign * compareInts(this.bitrate, other.bitrate); + } + return 0; + } + } + + private static final class AudioConfigurationTuple { + + public final int channelCount; + public final int sampleRate; + @Nullable public final String mimeType; + + public AudioConfigurationTuple(int channelCount, int sampleRate, @Nullable String mimeType) { + this.channelCount = channelCount; + this.sampleRate = sampleRate; + this.mimeType = mimeType; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + AudioConfigurationTuple other = (AudioConfigurationTuple) obj; + return channelCount == other.channelCount && sampleRate == other.sampleRate + && TextUtils.equals(mimeType, other.mimeType); + } + + @Override + public int hashCode() { + int result = channelCount; + result = 31 * result + sampleRate; + result = 31 * result + (mimeType != null ? mimeType.hashCode() : 0); + return result; + } + + } + + /** Represents how well a text track matches the selection {@link Parameters}. */ + protected static final class TextTrackScore implements Comparable { + + /** + * Whether the provided format is within the parameter constraints. If {@code false}, the format + * should not be selected. + */ + public final boolean isWithinConstraints; + + private final boolean isWithinRendererCapabilities; + private final boolean isDefault; + private final boolean hasPreferredIsForcedFlag; + private final int preferredLanguageScore; + private final int preferredRoleFlagsScore; + private final int selectedAudioLanguageScore; + private final boolean hasCaptionRoleFlags; + + public TextTrackScore( + Format format, + Parameters parameters, + @Capabilities int trackFormatSupport, + @Nullable String selectedAudioLanguage) { + isWithinRendererCapabilities = + isSupported(trackFormatSupport, /* allowExceedsCapabilities= */ false); + int maskedSelectionFlags = + format.selectionFlags & ~parameters.disabledTextTrackSelectionFlags; + isDefault = (maskedSelectionFlags & C.SELECTION_FLAG_DEFAULT) != 0; + boolean isForced = (maskedSelectionFlags & C.SELECTION_FLAG_FORCED) != 0; + preferredLanguageScore = + getFormatLanguageScore( + format, parameters.preferredTextLanguage, parameters.selectUndeterminedTextLanguage); + preferredRoleFlagsScore = + Integer.bitCount(format.roleFlags & parameters.preferredTextRoleFlags); + hasCaptionRoleFlags = + (format.roleFlags & (C.ROLE_FLAG_CAPTION | C.ROLE_FLAG_DESCRIBES_MUSIC_AND_SOUND)) != 0; + // Prefer non-forced to forced if a preferred text language has been matched. Where both are + // provided the non-forced track will usually contain the forced subtitles as a subset. + // Otherwise, prefer a forced track. + hasPreferredIsForcedFlag = + (preferredLanguageScore > 0 && !isForced) || (preferredLanguageScore == 0 && isForced); + boolean selectedAudioLanguageUndetermined = + normalizeUndeterminedLanguageToNull(selectedAudioLanguage) == null; + selectedAudioLanguageScore = + getFormatLanguageScore(format, selectedAudioLanguage, selectedAudioLanguageUndetermined); + isWithinConstraints = + preferredLanguageScore > 0 + || (parameters.preferredTextLanguage == null && preferredRoleFlagsScore > 0) + || isDefault + || (isForced && selectedAudioLanguageScore > 0); + } + + /** + * Compares this score with another. + * + * @param other The other score to compare to. + * @return A positive integer if this score is better than the other. Zero if they are equal. A + * negative integer if this score is worse than the other. + */ + @Override + public int compareTo(TextTrackScore other) { + if (this.isWithinRendererCapabilities != other.isWithinRendererCapabilities) { + return this.isWithinRendererCapabilities ? 1 : -1; + } + if (this.preferredLanguageScore != other.preferredLanguageScore) { + return compareInts(this.preferredLanguageScore, other.preferredLanguageScore); + } + if (this.preferredRoleFlagsScore != other.preferredRoleFlagsScore) { + return compareInts(this.preferredRoleFlagsScore, other.preferredRoleFlagsScore); + } + if (this.isDefault != other.isDefault) { + return this.isDefault ? 1 : -1; + } + if (this.hasPreferredIsForcedFlag != other.hasPreferredIsForcedFlag) { + return this.hasPreferredIsForcedFlag ? 1 : -1; + } + if (this.selectedAudioLanguageScore != other.selectedAudioLanguageScore) { + return compareInts(this.selectedAudioLanguageScore, other.selectedAudioLanguageScore); + } + if (preferredRoleFlagsScore == 0 && this.hasCaptionRoleFlags != other.hasCaptionRoleFlags) { + return this.hasCaptionRoleFlags ? -1 : 1; + } + return 0; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/FixedTrackSelection.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/FixedTrackSelection.java new file mode 100644 index 0000000000..824abaccfa --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/FixedTrackSelection.java @@ -0,0 +1,117 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunkIterator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import java.util.List; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * A {@link TrackSelection} consisting of a single track. + */ +public final class FixedTrackSelection extends BaseTrackSelection { + + /** + * @deprecated Don't use as adaptive track selection factory as it will throw when multiple tracks + * are selected. If you would like to disable adaptive selection in {@link + * DefaultTrackSelector}, enable the {@link + * DefaultTrackSelector.Parameters#forceHighestSupportedBitrate} flag instead. + */ + @Deprecated + public static final class Factory implements TrackSelection.Factory { + + private final int reason; + @Nullable private final Object data; + + public Factory() { + this.reason = C.SELECTION_REASON_UNKNOWN; + this.data = null; + } + + /** + * @param reason A reason for the track selection. + * @param data Optional data associated with the track selection. + */ + public Factory(int reason, @Nullable Object data) { + this.reason = reason; + this.data = data; + } + + @Override + public @NullableType TrackSelection[] createTrackSelections( + @NullableType Definition[] definitions, BandwidthMeter bandwidthMeter) { + return TrackSelectionUtil.createTrackSelectionsForDefinitions( + definitions, + definition -> + new FixedTrackSelection(definition.group, definition.tracks[0], reason, data)); + } + } + + private final int reason; + @Nullable private final Object data; + + /** + * @param group The {@link TrackGroup}. Must not be null. + * @param track The index of the selected track within the {@link TrackGroup}. + */ + public FixedTrackSelection(TrackGroup group, int track) { + this(group, track, C.SELECTION_REASON_UNKNOWN, null); + } + + /** + * @param group The {@link TrackGroup}. Must not be null. + * @param track The index of the selected track within the {@link TrackGroup}. + * @param reason A reason for the track selection. + * @param data Optional data associated with the track selection. + */ + public FixedTrackSelection(TrackGroup group, int track, int reason, @Nullable Object data) { + super(group, track); + this.reason = reason; + this.data = data; + } + + @Override + public void updateSelectedTrack( + long playbackPositionUs, + long bufferedDurationUs, + long availableDurationUs, + List queue, + MediaChunkIterator[] mediaChunkIterators) { + // Do nothing. + } + + @Override + public int getSelectedIndex() { + return 0; + } + + @Override + public int getSelectionReason() { + return reason; + } + + @Override + @Nullable + public Object getSelectionData() { + return data; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/MappingTrackSelector.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/MappingTrackSelector.java new file mode 100644 index 0000000000..8ba581020b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/MappingTrackSelector.java @@ -0,0 +1,541 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import android.util.Pair; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Renderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities.AdaptiveSupport; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities.Capabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities.FormatSupport; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererConfiguration; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Arrays; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * Base class for {@link TrackSelector}s that first establish a mapping between {@link TrackGroup}s + * and {@link Renderer}s, and then from that mapping create a {@link TrackSelection} for each + * renderer. + */ +public abstract class MappingTrackSelector extends TrackSelector { + + /** + * Provides mapped track information for each renderer. + */ + public static final class MappedTrackInfo { + + /** + * Levels of renderer support. Higher numerical values indicate higher levels of support. One of + * {@link #RENDERER_SUPPORT_NO_TRACKS}, {@link #RENDERER_SUPPORT_UNSUPPORTED_TRACKS}, {@link + * #RENDERER_SUPPORT_EXCEEDS_CAPABILITIES_TRACKS} or {@link #RENDERER_SUPPORT_PLAYABLE_TRACKS}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + RENDERER_SUPPORT_NO_TRACKS, + RENDERER_SUPPORT_UNSUPPORTED_TRACKS, + RENDERER_SUPPORT_EXCEEDS_CAPABILITIES_TRACKS, + RENDERER_SUPPORT_PLAYABLE_TRACKS + }) + @interface RendererSupport {} + /** The renderer does not have any associated tracks. */ + public static final int RENDERER_SUPPORT_NO_TRACKS = 0; + /** + * The renderer has tracks mapped to it, but all are unsupported. In other words, {@link + * #getTrackSupport(int, int, int)} returns {@link RendererCapabilities#FORMAT_UNSUPPORTED_DRM}, + * {@link RendererCapabilities#FORMAT_UNSUPPORTED_SUBTYPE} or {@link + * RendererCapabilities#FORMAT_UNSUPPORTED_TYPE} for all tracks mapped to the renderer. + */ + public static final int RENDERER_SUPPORT_UNSUPPORTED_TRACKS = 1; + /** + * The renderer has tracks mapped to it and at least one is of a supported type, but all such + * tracks exceed the renderer's capabilities. In other words, {@link #getTrackSupport(int, int, + * int)} returns {@link RendererCapabilities#FORMAT_EXCEEDS_CAPABILITIES} for at least one + * track mapped to the renderer, but does not return {@link + * RendererCapabilities#FORMAT_HANDLED} for any tracks mapped to the renderer. + */ + public static final int RENDERER_SUPPORT_EXCEEDS_CAPABILITIES_TRACKS = 2; + /** + * The renderer has tracks mapped to it, and at least one such track is playable. In other + * words, {@link #getTrackSupport(int, int, int)} returns {@link + * RendererCapabilities#FORMAT_HANDLED} for at least one track mapped to the renderer. + */ + public static final int RENDERER_SUPPORT_PLAYABLE_TRACKS = 3; + + /** @deprecated Use {@link #getRendererCount()}. */ + @Deprecated public final int length; + + private final int rendererCount; + private final int[] rendererTrackTypes; + private final TrackGroupArray[] rendererTrackGroups; + @AdaptiveSupport private final int[] rendererMixedMimeTypeAdaptiveSupports; + @Capabilities private final int[][][] rendererFormatSupports; + private final TrackGroupArray unmappedTrackGroups; + + /** + * @param rendererTrackTypes The track type handled by each renderer. + * @param rendererTrackGroups The {@link TrackGroup}s mapped to each renderer. + * @param rendererMixedMimeTypeAdaptiveSupports The {@link AdaptiveSupport} for mixed MIME type + * adaptation for the renderer. + * @param rendererFormatSupports The {@link Capabilities} for each mapped track, indexed by + * renderer, track group and track (in that order). + * @param unmappedTrackGroups {@link TrackGroup}s not mapped to any renderer. + */ + @SuppressWarnings("deprecation") + /* package */ MappedTrackInfo( + int[] rendererTrackTypes, + TrackGroupArray[] rendererTrackGroups, + @AdaptiveSupport int[] rendererMixedMimeTypeAdaptiveSupports, + @Capabilities int[][][] rendererFormatSupports, + TrackGroupArray unmappedTrackGroups) { + this.rendererTrackTypes = rendererTrackTypes; + this.rendererTrackGroups = rendererTrackGroups; + this.rendererFormatSupports = rendererFormatSupports; + this.rendererMixedMimeTypeAdaptiveSupports = rendererMixedMimeTypeAdaptiveSupports; + this.unmappedTrackGroups = unmappedTrackGroups; + this.rendererCount = rendererTrackTypes.length; + this.length = rendererCount; + } + + /** Returns the number of renderers. */ + public int getRendererCount() { + return rendererCount; + } + + /** + * Returns the track type that the renderer at a given index handles. + * + * @see Renderer#getTrackType() + * @param rendererIndex The renderer index. + * @return One of the {@code TRACK_TYPE_*} constants defined in {@link C}. + */ + public int getRendererType(int rendererIndex) { + return rendererTrackTypes[rendererIndex]; + } + + /** + * Returns the {@link TrackGroup}s mapped to the renderer at the specified index. + * + * @param rendererIndex The renderer index. + * @return The corresponding {@link TrackGroup}s. + */ + public TrackGroupArray getTrackGroups(int rendererIndex) { + return rendererTrackGroups[rendererIndex]; + } + + /** + * Returns the extent to which a renderer can play the tracks that are mapped to it. + * + * @param rendererIndex The renderer index. + * @return The {@link RendererSupport}. + */ + @RendererSupport + public int getRendererSupport(int rendererIndex) { + @RendererSupport int bestRendererSupport = RENDERER_SUPPORT_NO_TRACKS; + @Capabilities int[][] rendererFormatSupport = rendererFormatSupports[rendererIndex]; + for (@Capabilities int[] trackGroupFormatSupport : rendererFormatSupport) { + for (@Capabilities int trackFormatSupport : trackGroupFormatSupport) { + int trackRendererSupport; + switch (RendererCapabilities.getFormatSupport(trackFormatSupport)) { + case RendererCapabilities.FORMAT_HANDLED: + return RENDERER_SUPPORT_PLAYABLE_TRACKS; + case RendererCapabilities.FORMAT_EXCEEDS_CAPABILITIES: + trackRendererSupport = RENDERER_SUPPORT_EXCEEDS_CAPABILITIES_TRACKS; + break; + case RendererCapabilities.FORMAT_UNSUPPORTED_TYPE: + case RendererCapabilities.FORMAT_UNSUPPORTED_SUBTYPE: + case RendererCapabilities.FORMAT_UNSUPPORTED_DRM: + trackRendererSupport = RENDERER_SUPPORT_UNSUPPORTED_TRACKS; + break; + default: + throw new IllegalStateException(); + } + bestRendererSupport = Math.max(bestRendererSupport, trackRendererSupport); + } + } + return bestRendererSupport; + } + + /** @deprecated Use {@link #getTypeSupport(int)}. */ + @Deprecated + @RendererSupport + public int getTrackTypeRendererSupport(int trackType) { + return getTypeSupport(trackType); + } + + /** + * Returns the extent to which tracks of a specified type are supported. This is the best level + * of support obtained from {@link #getRendererSupport(int)} for all renderers that handle the + * specified type. If no such renderers exist then {@link #RENDERER_SUPPORT_NO_TRACKS} is + * returned. + * + * @param trackType The track type. One of the {@link C} {@code TRACK_TYPE_*} constants. + * @return The {@link RendererSupport}. + */ + @RendererSupport + public int getTypeSupport(int trackType) { + @RendererSupport int bestRendererSupport = RENDERER_SUPPORT_NO_TRACKS; + for (int i = 0; i < rendererCount; i++) { + if (rendererTrackTypes[i] == trackType) { + bestRendererSupport = Math.max(bestRendererSupport, getRendererSupport(i)); + } + } + return bestRendererSupport; + } + + /** @deprecated Use {@link #getTrackSupport(int, int, int)}. */ + @Deprecated + @FormatSupport + public int getTrackFormatSupport(int rendererIndex, int groupIndex, int trackIndex) { + return getTrackSupport(rendererIndex, groupIndex, trackIndex); + } + + /** + * Returns the extent to which an individual track is supported by the renderer. + * + * @param rendererIndex The renderer index. + * @param groupIndex The index of the track group to which the track belongs. + * @param trackIndex The index of the track within the track group. + * @return The {@link FormatSupport}. + */ + @FormatSupport + public int getTrackSupport(int rendererIndex, int groupIndex, int trackIndex) { + return RendererCapabilities.getFormatSupport( + rendererFormatSupports[rendererIndex][groupIndex][trackIndex]); + } + + /** + * Returns the extent to which a renderer supports adaptation between supported tracks in a + * specified {@link TrackGroup}. + * + *

Tracks for which {@link #getTrackSupport(int, int, int)} returns {@link + * RendererCapabilities#FORMAT_HANDLED} are always considered. Tracks for which {@link + * #getTrackSupport(int, int, int)} returns {@link + * RendererCapabilities#FORMAT_EXCEEDS_CAPABILITIES} are also considered if {@code + * includeCapabilitiesExceededTracks} is set to {@code true}. Tracks for which {@link + * #getTrackSupport(int, int, int)} returns {@link RendererCapabilities#FORMAT_UNSUPPORTED_DRM}, + * {@link RendererCapabilities#FORMAT_UNSUPPORTED_TYPE} or {@link + * RendererCapabilities#FORMAT_UNSUPPORTED_SUBTYPE} are never considered. + * + * @param rendererIndex The renderer index. + * @param groupIndex The index of the track group. + * @param includeCapabilitiesExceededTracks Whether tracks that exceed the capabilities of the + * renderer are included when determining support. + * @return The {@link AdaptiveSupport}. + */ + @AdaptiveSupport + public int getAdaptiveSupport( + int rendererIndex, int groupIndex, boolean includeCapabilitiesExceededTracks) { + int trackCount = rendererTrackGroups[rendererIndex].get(groupIndex).length; + // Iterate over the tracks in the group, recording the indices of those to consider. + int[] trackIndices = new int[trackCount]; + int trackIndexCount = 0; + for (int i = 0; i < trackCount; i++) { + @FormatSupport int fixedSupport = getTrackSupport(rendererIndex, groupIndex, i); + if (fixedSupport == RendererCapabilities.FORMAT_HANDLED + || (includeCapabilitiesExceededTracks + && fixedSupport == RendererCapabilities.FORMAT_EXCEEDS_CAPABILITIES)) { + trackIndices[trackIndexCount++] = i; + } + } + trackIndices = Arrays.copyOf(trackIndices, trackIndexCount); + return getAdaptiveSupport(rendererIndex, groupIndex, trackIndices); + } + + /** + * Returns the extent to which a renderer supports adaptation between specified tracks within a + * {@link TrackGroup}. + * + * @param rendererIndex The renderer index. + * @param groupIndex The index of the track group. + * @return The {@link AdaptiveSupport}. + */ + @AdaptiveSupport + public int getAdaptiveSupport(int rendererIndex, int groupIndex, int[] trackIndices) { + int handledTrackCount = 0; + @AdaptiveSupport int adaptiveSupport = RendererCapabilities.ADAPTIVE_SEAMLESS; + boolean multipleMimeTypes = false; + String firstSampleMimeType = null; + for (int i = 0; i < trackIndices.length; i++) { + int trackIndex = trackIndices[i]; + String sampleMimeType = + rendererTrackGroups[rendererIndex].get(groupIndex).getFormat(trackIndex).sampleMimeType; + if (handledTrackCount++ == 0) { + firstSampleMimeType = sampleMimeType; + } else { + multipleMimeTypes |= !Util.areEqual(firstSampleMimeType, sampleMimeType); + } + adaptiveSupport = + Math.min( + adaptiveSupport, + RendererCapabilities.getAdaptiveSupport( + rendererFormatSupports[rendererIndex][groupIndex][i])); + } + return multipleMimeTypes + ? Math.min(adaptiveSupport, rendererMixedMimeTypeAdaptiveSupports[rendererIndex]) + : adaptiveSupport; + } + + /** @deprecated Use {@link #getUnmappedTrackGroups()}. */ + @Deprecated + public TrackGroupArray getUnassociatedTrackGroups() { + return getUnmappedTrackGroups(); + } + + /** Returns {@link TrackGroup}s not mapped to any renderer. */ + public TrackGroupArray getUnmappedTrackGroups() { + return unmappedTrackGroups; + } + + } + + @Nullable private MappedTrackInfo currentMappedTrackInfo; + + /** + * Returns the mapping information for the currently active track selection, or null if no + * selection is currently active. + */ + public final @Nullable MappedTrackInfo getCurrentMappedTrackInfo() { + return currentMappedTrackInfo; + } + + // TrackSelector implementation. + + @Override + public final void onSelectionActivated(Object info) { + currentMappedTrackInfo = (MappedTrackInfo) info; + } + + @Override + public final TrackSelectorResult selectTracks( + RendererCapabilities[] rendererCapabilities, + TrackGroupArray trackGroups, + MediaPeriodId periodId, + Timeline timeline) + throws ExoPlaybackException { + // Structures into which data will be written during the selection. The extra item at the end + // of each array is to store data associated with track groups that cannot be associated with + // any renderer. + int[] rendererTrackGroupCounts = new int[rendererCapabilities.length + 1]; + TrackGroup[][] rendererTrackGroups = new TrackGroup[rendererCapabilities.length + 1][]; + @Capabilities int[][][] rendererFormatSupports = new int[rendererCapabilities.length + 1][][]; + for (int i = 0; i < rendererTrackGroups.length; i++) { + rendererTrackGroups[i] = new TrackGroup[trackGroups.length]; + rendererFormatSupports[i] = new int[trackGroups.length][]; + } + + // Determine the extent to which each renderer supports mixed mimeType adaptation. + @AdaptiveSupport + int[] rendererMixedMimeTypeAdaptationSupports = + getMixedMimeTypeAdaptationSupports(rendererCapabilities); + + // Associate each track group to a preferred renderer, and evaluate the support that the + // renderer provides for each track in the group. + for (int groupIndex = 0; groupIndex < trackGroups.length; groupIndex++) { + TrackGroup group = trackGroups.get(groupIndex); + // Associate the group to a preferred renderer. + boolean preferUnassociatedRenderer = + MimeTypes.getTrackType(group.getFormat(0).sampleMimeType) == C.TRACK_TYPE_METADATA; + int rendererIndex = + findRenderer( + rendererCapabilities, group, rendererTrackGroupCounts, preferUnassociatedRenderer); + // Evaluate the support that the renderer provides for each track in the group. + @Capabilities + int[] rendererFormatSupport = + rendererIndex == rendererCapabilities.length + ? new int[group.length] + : getFormatSupport(rendererCapabilities[rendererIndex], group); + // Stash the results. + int rendererTrackGroupCount = rendererTrackGroupCounts[rendererIndex]; + rendererTrackGroups[rendererIndex][rendererTrackGroupCount] = group; + rendererFormatSupports[rendererIndex][rendererTrackGroupCount] = rendererFormatSupport; + rendererTrackGroupCounts[rendererIndex]++; + } + + // Create a track group array for each renderer, and trim each rendererFormatSupports entry. + TrackGroupArray[] rendererTrackGroupArrays = new TrackGroupArray[rendererCapabilities.length]; + int[] rendererTrackTypes = new int[rendererCapabilities.length]; + for (int i = 0; i < rendererCapabilities.length; i++) { + int rendererTrackGroupCount = rendererTrackGroupCounts[i]; + rendererTrackGroupArrays[i] = + new TrackGroupArray( + Util.nullSafeArrayCopy(rendererTrackGroups[i], rendererTrackGroupCount)); + rendererFormatSupports[i] = + Util.nullSafeArrayCopy(rendererFormatSupports[i], rendererTrackGroupCount); + rendererTrackTypes[i] = rendererCapabilities[i].getTrackType(); + } + + // Create a track group array for track groups not mapped to a renderer. + int unmappedTrackGroupCount = rendererTrackGroupCounts[rendererCapabilities.length]; + TrackGroupArray unmappedTrackGroupArray = + new TrackGroupArray( + Util.nullSafeArrayCopy( + rendererTrackGroups[rendererCapabilities.length], unmappedTrackGroupCount)); + + // Package up the track information and selections. + MappedTrackInfo mappedTrackInfo = + new MappedTrackInfo( + rendererTrackTypes, + rendererTrackGroupArrays, + rendererMixedMimeTypeAdaptationSupports, + rendererFormatSupports, + unmappedTrackGroupArray); + + Pair<@NullableType RendererConfiguration[], @NullableType TrackSelection[]> result = + selectTracks( + mappedTrackInfo, rendererFormatSupports, rendererMixedMimeTypeAdaptationSupports); + return new TrackSelectorResult(result.first, result.second, mappedTrackInfo); + } + + /** + * Given mapped track information, returns a track selection and configuration for each renderer. + * + * @param mappedTrackInfo Mapped track information. + * @param rendererFormatSupports The {@link Capabilities} for ach mapped track, indexed by + * renderer, track group and track (in that order). + * @param rendererMixedMimeTypeAdaptationSupport The {@link AdaptiveSupport} for mixed MIME type + * adaptation for the renderer. + * @return A pair consisting of the track selections and configurations for each renderer. A null + * configuration indicates the renderer should be disabled, in which case the track selection + * will also be null. A track selection may also be null for a non-disabled renderer if {@link + * RendererCapabilities#getTrackType()} is {@link C#TRACK_TYPE_NONE}. + * @throws ExoPlaybackException If an error occurs while selecting the tracks. + */ + protected abstract Pair<@NullableType RendererConfiguration[], @NullableType TrackSelection[]> + selectTracks( + MappedTrackInfo mappedTrackInfo, + @Capabilities int[][][] rendererFormatSupports, + @AdaptiveSupport int[] rendererMixedMimeTypeAdaptationSupport) + throws ExoPlaybackException; + + /** + * Finds the renderer to which the provided {@link TrackGroup} should be mapped. + * + *

A {@link TrackGroup} is mapped to the renderer that reports the highest of (listed in + * decreasing order of support) {@link RendererCapabilities#FORMAT_HANDLED}, {@link + * RendererCapabilities#FORMAT_EXCEEDS_CAPABILITIES}, {@link + * RendererCapabilities#FORMAT_UNSUPPORTED_DRM} and {@link + * RendererCapabilities#FORMAT_UNSUPPORTED_SUBTYPE}. + * + *

In the case that two or more renderers report the same level of support, the assignment + * depends on {@code preferUnassociatedRenderer}. + * + *

    + *
  • If {@code preferUnassociatedRenderer} is false, the renderer with the lowest index is + * chosen regardless of how many other track groups are already mapped to this renderer. + *
  • If {@code preferUnassociatedRenderer} is true, the renderer with the lowest index and no + * other mapped track group is chosen, or the renderer with the lowest index if all + * available renderers have already mapped track groups. + *
+ * + *

If all renderers report {@link RendererCapabilities#FORMAT_UNSUPPORTED_TYPE} for all of the + * tracks in the group, then {@code renderers.length} is returned to indicate that the group was + * not mapped to any renderer. + * + * @param rendererCapabilities The {@link RendererCapabilities} of the renderers. + * @param group The track group to map to a renderer. + * @param rendererTrackGroupCounts The number of already mapped track groups for each renderer. + * @param preferUnassociatedRenderer Whether renderers unassociated to any track group should be + * preferred. + * @return The index of the renderer to which the track group was mapped, or {@code + * renderers.length} if it was not mapped to any renderer. + * @throws ExoPlaybackException If an error occurs finding a renderer. + */ + private static int findRenderer( + RendererCapabilities[] rendererCapabilities, + TrackGroup group, + int[] rendererTrackGroupCounts, + boolean preferUnassociatedRenderer) + throws ExoPlaybackException { + int bestRendererIndex = rendererCapabilities.length; + @FormatSupport int bestFormatSupportLevel = RendererCapabilities.FORMAT_UNSUPPORTED_TYPE; + boolean bestRendererIsUnassociated = true; + for (int rendererIndex = 0; rendererIndex < rendererCapabilities.length; rendererIndex++) { + RendererCapabilities rendererCapability = rendererCapabilities[rendererIndex]; + @FormatSupport int formatSupportLevel = RendererCapabilities.FORMAT_UNSUPPORTED_TYPE; + for (int trackIndex = 0; trackIndex < group.length; trackIndex++) { + @FormatSupport + int trackFormatSupportLevel = + RendererCapabilities.getFormatSupport( + rendererCapability.supportsFormat(group.getFormat(trackIndex))); + formatSupportLevel = Math.max(formatSupportLevel, trackFormatSupportLevel); + } + boolean rendererIsUnassociated = rendererTrackGroupCounts[rendererIndex] == 0; + if (formatSupportLevel > bestFormatSupportLevel + || (formatSupportLevel == bestFormatSupportLevel + && preferUnassociatedRenderer + && !bestRendererIsUnassociated + && rendererIsUnassociated)) { + bestRendererIndex = rendererIndex; + bestFormatSupportLevel = formatSupportLevel; + bestRendererIsUnassociated = rendererIsUnassociated; + } + } + return bestRendererIndex; + } + + /** + * Calls {@link RendererCapabilities#supportsFormat} for each track in the specified {@link + * TrackGroup}, returning the results in an array. + * + * @param rendererCapabilities The {@link RendererCapabilities} of the renderer. + * @param group The track group to evaluate. + * @return An array containing {@link Capabilities} for each track in the group. + * @throws ExoPlaybackException If an error occurs determining the format support. + */ + @Capabilities + private static int[] getFormatSupport(RendererCapabilities rendererCapabilities, TrackGroup group) + throws ExoPlaybackException { + @Capabilities int[] formatSupport = new int[group.length]; + for (int i = 0; i < group.length; i++) { + formatSupport[i] = rendererCapabilities.supportsFormat(group.getFormat(i)); + } + return formatSupport; + } + + /** + * Calls {@link RendererCapabilities#supportsMixedMimeTypeAdaptation()} for each renderer, + * returning the results in an array. + * + * @param rendererCapabilities The {@link RendererCapabilities} of the renderers. + * @return An array containing the {@link AdaptiveSupport} for mixed MIME type adaptation for the + * renderer. + * @throws ExoPlaybackException If an error occurs determining the adaptation support. + */ + @AdaptiveSupport + private static int[] getMixedMimeTypeAdaptationSupports( + RendererCapabilities[] rendererCapabilities) throws ExoPlaybackException { + @AdaptiveSupport int[] mixedMimeTypeAdaptationSupport = new int[rendererCapabilities.length]; + for (int i = 0; i < mixedMimeTypeAdaptationSupport.length; i++) { + mixedMimeTypeAdaptationSupport[i] = rendererCapabilities[i].supportsMixedMimeTypeAdaptation(); + } + return mixedMimeTypeAdaptationSupport; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/RandomTrackSelection.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/RandomTrackSelection.java new file mode 100644 index 0000000000..75b7fc21f1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/RandomTrackSelection.java @@ -0,0 +1,143 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import android.os.SystemClock; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunkIterator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import java.util.List; +import java.util.Random; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * A {@link TrackSelection} whose selected track is updated randomly. + */ +public final class RandomTrackSelection extends BaseTrackSelection { + + /** + * Factory for {@link RandomTrackSelection} instances. + */ + public static final class Factory implements TrackSelection.Factory { + + private final Random random; + + public Factory() { + random = new Random(); + } + + /** + * @param seed A seed for the {@link Random} instance used by the factory. + */ + public Factory(int seed) { + random = new Random(seed); + } + + @Override + public @NullableType TrackSelection[] createTrackSelections( + @NullableType Definition[] definitions, BandwidthMeter bandwidthMeter) { + return TrackSelectionUtil.createTrackSelectionsForDefinitions( + definitions, + definition -> new RandomTrackSelection(definition.group, definition.tracks, random)); + } + } + + private final Random random; + + private int selectedIndex; + + /** + * @param group The {@link TrackGroup}. Must not be null. + * @param tracks The indices of the selected tracks within the {@link TrackGroup}. Must not be + * null or empty. May be in any order. + */ + public RandomTrackSelection(TrackGroup group, int... tracks) { + super(group, tracks); + random = new Random(); + selectedIndex = random.nextInt(length); + } + + /** + * @param group The {@link TrackGroup}. Must not be null. + * @param tracks The indices of the selected tracks within the {@link TrackGroup}. Must not be + * null or empty. May be in any order. + * @param seed A seed for the {@link Random} instance used to update the selected track. + */ + public RandomTrackSelection(TrackGroup group, int[] tracks, long seed) { + this(group, tracks, new Random(seed)); + } + + /** + * @param group The {@link TrackGroup}. Must not be null. + * @param tracks The indices of the selected tracks within the {@link TrackGroup}. Must not be + * null or empty. May be in any order. + * @param random A source of random numbers. + */ + public RandomTrackSelection(TrackGroup group, int[] tracks, Random random) { + super(group, tracks); + this.random = random; + selectedIndex = random.nextInt(length); + } + + @Override + public void updateSelectedTrack( + long playbackPositionUs, + long bufferedDurationUs, + long availableDurationUs, + List queue, + MediaChunkIterator[] mediaChunkIterators) { + // Count the number of non-blacklisted formats. + long nowMs = SystemClock.elapsedRealtime(); + int nonBlacklistedFormatCount = 0; + for (int i = 0; i < length; i++) { + if (!isBlacklisted(i, nowMs)) { + nonBlacklistedFormatCount++; + } + } + + selectedIndex = random.nextInt(nonBlacklistedFormatCount); + if (nonBlacklistedFormatCount != length) { + // Adjust the format index to account for blacklisted formats. + nonBlacklistedFormatCount = 0; + for (int i = 0; i < length; i++) { + if (!isBlacklisted(i, nowMs) && selectedIndex == nonBlacklistedFormatCount++) { + selectedIndex = i; + return; + } + } + } + } + + @Override + public int getSelectedIndex() { + return selectedIndex; + } + + @Override + public int getSelectionReason() { + return C.SELECTION_REASON_ADAPTIVE; + } + + @Override + @Nullable + public Object getSelectionData() { + return null; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelection.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelection.java new file mode 100644 index 0000000000..d2f32222fa --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelection.java @@ -0,0 +1,269 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunk; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.chunk.MediaChunkIterator; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import java.util.List; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * A track selection consisting of a static subset of selected tracks belonging to a {@link + * TrackGroup}, and a possibly varying individual selected track from the subset. + * + *

Tracks belonging to the subset are exposed in decreasing bandwidth order. The individual + * selected track may change dynamically as a result of calling {@link #updateSelectedTrack(long, + * long, long, List, MediaChunkIterator[])} or {@link #evaluateQueueSize(long, List)}. This only + * happens between calls to {@link #enable()} and {@link #disable()}. + */ +public interface TrackSelection { + + /** Contains of a subset of selected tracks belonging to a {@link TrackGroup}. */ + final class Definition { + /** The {@link TrackGroup} which tracks belong to. */ + public final TrackGroup group; + /** The indices of the selected tracks in {@link #group}. */ + public final int[] tracks; + /** The track selection reason. One of the {@link C} SELECTION_REASON_ constants. */ + public final int reason; + /** Optional data associated with this selection of tracks. */ + @Nullable public final Object data; + + /** + * @param group The {@link TrackGroup}. Must not be null. + * @param tracks The indices of the selected tracks within the {@link TrackGroup}. Must not be + * null or empty. May be in any order. + */ + public Definition(TrackGroup group, int... tracks) { + this(group, tracks, C.SELECTION_REASON_UNKNOWN, /* data= */ null); + } + + /** + * @param group The {@link TrackGroup}. Must not be null. + * @param tracks The indices of the selected tracks within the {@link TrackGroup}. Must not be + * @param reason The track selection reason. One of the {@link C} SELECTION_REASON_ constants. + * @param data Optional data associated with this selection of tracks. + */ + public Definition(TrackGroup group, int[] tracks, int reason, @Nullable Object data) { + this.group = group; + this.tracks = tracks; + this.reason = reason; + this.data = data; + } + } + + /** + * Factory for {@link TrackSelection} instances. + */ + interface Factory { + + /** + * Creates track selections for the provided {@link Definition Definitions}. + * + *

Implementations that create at most one adaptive track selection may use {@link + * TrackSelectionUtil#createTrackSelectionsForDefinitions}. + * + * @param definitions A {@link Definition} array. May include null values. + * @param bandwidthMeter A {@link BandwidthMeter} which can be used to select tracks. + * @return The created selections. Must have the same length as {@code definitions} and may + * include null values. + */ + @NullableType + TrackSelection[] createTrackSelections( + @NullableType Definition[] definitions, BandwidthMeter bandwidthMeter); + } + + /** + * Enables the track selection. Dynamic changes via {@link #updateSelectedTrack(long, long, long, + * List, MediaChunkIterator[])} or {@link #evaluateQueueSize(long, List)} will only happen after + * this call. + * + *

This method may not be called when the track selection is already enabled. + */ + void enable(); + + /** + * Disables this track selection. No further dynamic changes via {@link #updateSelectedTrack(long, + * long, long, List, MediaChunkIterator[])} or {@link #evaluateQueueSize(long, List)} will happen + * after this call. + * + *

This method may only be called when the track selection is already enabled. + */ + void disable(); + + /** + * Returns the {@link TrackGroup} to which the selected tracks belong. + */ + TrackGroup getTrackGroup(); + + // Static subset of selected tracks. + + /** + * Returns the number of tracks in the selection. + */ + int length(); + + /** + * Returns the format of the track at a given index in the selection. + * + * @param index The index in the selection. + * @return The format of the selected track. + */ + Format getFormat(int index); + + /** + * Returns the index in the track group of the track at a given index in the selection. + * + * @param index The index in the selection. + * @return The index of the selected track. + */ + int getIndexInTrackGroup(int index); + + /** + * Returns the index in the selection of the track with the specified format. The format is + * located by identity so, for example, {@code selection.indexOf(selection.getFormat(index)) == + * index} even if multiple selected tracks have formats that contain the same values. + * + * @param format The format. + * @return The index in the selection, or {@link C#INDEX_UNSET} if the track with the specified + * format is not part of the selection. + */ + int indexOf(Format format); + + /** + * Returns the index in the selection of the track with the specified index in the track group. + * + * @param indexInTrackGroup The index in the track group. + * @return The index in the selection, or {@link C#INDEX_UNSET} if the track with the specified + * index is not part of the selection. + */ + int indexOf(int indexInTrackGroup); + + // Individual selected track. + + /** + * Returns the {@link Format} of the individual selected track. + */ + Format getSelectedFormat(); + + /** + * Returns the index in the track group of the individual selected track. + */ + int getSelectedIndexInTrackGroup(); + + /** + * Returns the index of the selected track. + */ + int getSelectedIndex(); + + /** + * Returns the reason for the current track selection. + */ + int getSelectionReason(); + + /** Returns optional data associated with the current track selection. */ + @Nullable Object getSelectionData(); + + // Adaptation. + + /** + * Called to notify the selection of the current playback speed. The playback speed may affect + * adaptive track selection. + * + * @param speed The playback speed. + */ + void onPlaybackSpeed(float speed); + + /** + * Called to notify the selection of a position discontinuity. + * + *

This happens when the playback position jumps, e.g., as a result of a seek being performed. + */ + default void onDiscontinuity() {} + + /** + * Updates the selected track for sources that load media in discrete {@link MediaChunk}s. + * + *

This method may only be called when the selection is enabled. + * + * @param playbackPositionUs The current playback position in microseconds. If playback of the + * period to which this track selection belongs has not yet started, the value will be the + * starting position in the period minus the duration of any media in previous periods still + * to be played. + * @param bufferedDurationUs The duration of media currently buffered from the current playback + * position, in microseconds. Note that the next load position can be calculated as {@code + * (playbackPositionUs + bufferedDurationUs)}. + * @param availableDurationUs The duration of media available for buffering from the current + * playback position, in microseconds, or {@link C#TIME_UNSET} if media can be buffered to the + * end of the current period. Note that if not set to {@link C#TIME_UNSET}, the position up to + * which media is available for buffering can be calculated as {@code (playbackPositionUs + + * availableDurationUs)}. + * @param queue The queue of already buffered {@link MediaChunk}s. Must not be modified. + * @param mediaChunkIterators An array of {@link MediaChunkIterator}s providing information about + * the sequence of upcoming media chunks for each track in the selection. All iterators start + * from the media chunk which will be loaded next if the respective track is selected. Note + * that this information may not be available for all tracks, and so some iterators may be + * empty. + */ + void updateSelectedTrack( + long playbackPositionUs, + long bufferedDurationUs, + long availableDurationUs, + List queue, + MediaChunkIterator[] mediaChunkIterators); + + /** + * May be called periodically by sources that load media in discrete {@link MediaChunk}s and + * support discarding of buffered chunks in order to re-buffer using a different selected track. + * Returns the number of chunks that should be retained in the queue. + *

+ * To avoid excessive re-buffering, implementations should normally return the size of the queue. + * An example of a case where a smaller value may be returned is if network conditions have + * improved dramatically, allowing chunks to be discarded and re-buffered in a track of + * significantly higher quality. Discarding chunks may allow faster switching to a higher quality + * track in this case. This method may only be called when the selection is enabled. + * + * @param playbackPositionUs The current playback position in microseconds. If playback of the + * period to which this track selection belongs has not yet started, the value will be the + * starting position in the period minus the duration of any media in previous periods still + * to be played. + * @param queue The queue of buffered {@link MediaChunk}s. Must not be modified. + * @return The number of chunks to retain in the queue. + */ + int evaluateQueueSize(long playbackPositionUs, List queue); + + /** + * Attempts to blacklist the track at the specified index in the selection, making it ineligible + * for selection by calls to {@link #updateSelectedTrack(long, long, long, List, + * MediaChunkIterator[])} for the specified period of time. Blacklisting will fail if all other + * tracks are currently blacklisted. If blacklisting the currently selected track, note that it + * will remain selected until the next call to {@link #updateSelectedTrack(long, long, long, List, + * MediaChunkIterator[])}. + * + *

This method may only be called when the selection is enabled. + * + * @param index The index of the track in the selection. + * @param blacklistDurationMs The duration of time for which the track should be blacklisted, in + * milliseconds. + * @return Whether blacklisting was successful. + */ + boolean blacklist(int index, long blacklistDurationMs); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectionArray.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectionArray.java new file mode 100644 index 0000000000..7953ef354c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectionArray.java @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import androidx.annotation.Nullable; +import java.util.Arrays; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** An array of {@link TrackSelection}s. */ +public final class TrackSelectionArray { + + /** The length of this array. */ + public final int length; + + private final @NullableType TrackSelection[] trackSelections; + + // Lazily initialized hashcode. + private int hashCode; + + /** @param trackSelections The selections. Must not be null, but may contain null elements. */ + public TrackSelectionArray(@NullableType TrackSelection... trackSelections) { + this.trackSelections = trackSelections; + this.length = trackSelections.length; + } + + /** + * Returns the selection at a given index. + * + * @param index The index of the selection. + * @return The selection. + */ + @Nullable + public TrackSelection get(int index) { + return trackSelections[index]; + } + + /** Returns the selections in a newly allocated array. */ + public @NullableType TrackSelection[] getAll() { + return trackSelections.clone(); + } + + @Override + public int hashCode() { + if (hashCode == 0) { + int result = 17; + result = 31 * result + Arrays.hashCode(trackSelections); + hashCode = result; + } + return hashCode; + } + + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + TrackSelectionArray other = (TrackSelectionArray) obj; + return Arrays.equals(trackSelections, other.trackSelections); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectionParameters.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectionParameters.java new file mode 100644 index 0000000000..b6086fa594 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectionParameters.java @@ -0,0 +1,336 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import android.annotation.TargetApi; +import android.content.Context; +import android.os.Looper; +import android.os.Parcel; +import android.os.Parcelable; +import android.text.TextUtils; +import android.view.accessibility.CaptioningManager; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Locale; + +/** Constraint parameters for track selection. */ +public class TrackSelectionParameters implements Parcelable { + + /** + * A builder for {@link TrackSelectionParameters}. See the {@link TrackSelectionParameters} + * documentation for explanations of the parameters that can be configured using this builder. + */ + public static class Builder { + + @Nullable /* package */ String preferredAudioLanguage; + @Nullable /* package */ String preferredTextLanguage; + @C.RoleFlags /* package */ int preferredTextRoleFlags; + /* package */ boolean selectUndeterminedTextLanguage; + @C.SelectionFlags /* package */ int disabledTextTrackSelectionFlags; + + /** + * Creates a builder with default initial values. + * + * @param context Any context. + */ + @SuppressWarnings({"deprecation", "initialization:method.invocation.invalid"}) + public Builder(Context context) { + this(); + setPreferredTextLanguageAndRoleFlagsToCaptioningManagerSettings(context); + } + + /** + * @deprecated {@link Context} constraints will not be set when using this constructor. Use + * {@link #Builder(Context)} instead. + */ + @Deprecated + public Builder() { + preferredAudioLanguage = null; + preferredTextLanguage = null; + preferredTextRoleFlags = 0; + selectUndeterminedTextLanguage = false; + disabledTextTrackSelectionFlags = 0; + } + + /** + * @param initialValues The {@link TrackSelectionParameters} from which the initial values of + * the builder are obtained. + */ + /* package */ Builder(TrackSelectionParameters initialValues) { + preferredAudioLanguage = initialValues.preferredAudioLanguage; + preferredTextLanguage = initialValues.preferredTextLanguage; + preferredTextRoleFlags = initialValues.preferredTextRoleFlags; + selectUndeterminedTextLanguage = initialValues.selectUndeterminedTextLanguage; + disabledTextTrackSelectionFlags = initialValues.disabledTextTrackSelectionFlags; + } + + /** + * Sets the preferred language for audio and forced text tracks. + * + * @param preferredAudioLanguage Preferred audio language as an IETF BCP 47 conformant tag, or + * {@code null} to select the default track, or the first track if there's no default. + * @return This builder. + */ + public Builder setPreferredAudioLanguage(@Nullable String preferredAudioLanguage) { + this.preferredAudioLanguage = preferredAudioLanguage; + return this; + } + + /** + * Sets the preferred language and role flags for text tracks based on the accessibility + * settings of {@link CaptioningManager}. + * + *

Does nothing for API levels < 19 or when the {@link CaptioningManager} is disabled. + * + * @param context A {@link Context}. + * @return This builder. + */ + public Builder setPreferredTextLanguageAndRoleFlagsToCaptioningManagerSettings( + Context context) { + if (Util.SDK_INT >= 19) { + setPreferredTextLanguageAndRoleFlagsToCaptioningManagerSettingsV19(context); + } + return this; + } + + /** + * Sets the preferred language for text tracks. + * + * @param preferredTextLanguage Preferred text language as an IETF BCP 47 conformant tag, or + * {@code null} to select the default track if there is one, or no track otherwise. + * @return This builder. + */ + public Builder setPreferredTextLanguage(@Nullable String preferredTextLanguage) { + this.preferredTextLanguage = preferredTextLanguage; + return this; + } + + /** + * Sets the preferred {@link C.RoleFlags} for text tracks. + * + * @param preferredTextRoleFlags Preferred text role flags. + * @return This builder. + */ + public Builder setPreferredTextRoleFlags(@C.RoleFlags int preferredTextRoleFlags) { + this.preferredTextRoleFlags = preferredTextRoleFlags; + return this; + } + + /** + * Sets whether a text track with undetermined language should be selected if no track with + * {@link #setPreferredTextLanguage(String)} is available, or if the preferred language is + * unset. + * + * @param selectUndeterminedTextLanguage Whether a text track with undetermined language should + * be selected if no preferred language track is available. + * @return This builder. + */ + public Builder setSelectUndeterminedTextLanguage(boolean selectUndeterminedTextLanguage) { + this.selectUndeterminedTextLanguage = selectUndeterminedTextLanguage; + return this; + } + + /** + * Sets a bitmask of selection flags that are disabled for text track selections. + * + * @param disabledTextTrackSelectionFlags A bitmask of {@link C.SelectionFlags} that are + * disabled for text track selections. + * @return This builder. + */ + public Builder setDisabledTextTrackSelectionFlags( + @C.SelectionFlags int disabledTextTrackSelectionFlags) { + this.disabledTextTrackSelectionFlags = disabledTextTrackSelectionFlags; + return this; + } + + /** Builds a {@link TrackSelectionParameters} instance with the selected values. */ + public TrackSelectionParameters build() { + return new TrackSelectionParameters( + // Audio + preferredAudioLanguage, + // Text + preferredTextLanguage, + preferredTextRoleFlags, + selectUndeterminedTextLanguage, + disabledTextTrackSelectionFlags); + } + + @TargetApi(19) + private void setPreferredTextLanguageAndRoleFlagsToCaptioningManagerSettingsV19( + Context context) { + if (Util.SDK_INT < 23 && Looper.myLooper() == null) { + // Android platform bug (pre-Marshmallow) that causes RuntimeExceptions when + // CaptioningService is instantiated from a non-Looper thread. See [internal: b/143779904]. + return; + } + CaptioningManager captioningManager = + (CaptioningManager) context.getSystemService(Context.CAPTIONING_SERVICE); + if (captioningManager == null || !captioningManager.isEnabled()) { + return; + } + preferredTextRoleFlags = C.ROLE_FLAG_CAPTION | C.ROLE_FLAG_DESCRIBES_MUSIC_AND_SOUND; + Locale preferredLocale = captioningManager.getLocale(); + if (preferredLocale != null) { + preferredTextLanguage = Util.getLocaleLanguageTag(preferredLocale); + } + } + } + + /** + * An instance with default values, except those obtained from the {@link Context}. + * + *

If possible, use {@link #getDefaults(Context)} instead. + * + *

This instance will not have the following settings: + * + *

    + *
  • {@link Builder#setPreferredTextLanguageAndRoleFlagsToCaptioningManagerSettings(Context) + * Preferred text language and role flags} configured to the accessibility settings of + * {@link CaptioningManager}. + *
+ */ + @SuppressWarnings("deprecation") + public static final TrackSelectionParameters DEFAULT_WITHOUT_CONTEXT = new Builder().build(); + + /** + * @deprecated This instance is not configured using {@link Context} constraints. Use {@link + * #getDefaults(Context)} instead. + */ + @Deprecated public static final TrackSelectionParameters DEFAULT = DEFAULT_WITHOUT_CONTEXT; + + /** Returns an instance configured with default values. */ + public static TrackSelectionParameters getDefaults(Context context) { + return new Builder(context).build(); + } + + /** + * The preferred language for audio and forced text tracks as an IETF BCP 47 conformant tag. + * {@code null} selects the default track, or the first track if there's no default. The default + * value is {@code null}. + */ + @Nullable public final String preferredAudioLanguage; + /** + * The preferred language for text tracks as an IETF BCP 47 conformant tag. {@code null} selects + * the default track if there is one, or no track otherwise. The default value is {@code null}, or + * the language of the accessibility {@link CaptioningManager} if enabled. + */ + @Nullable public final String preferredTextLanguage; + /** + * The preferred {@link C.RoleFlags} for text tracks. {@code 0} selects the default track if there + * is one, or no track otherwise. The default value is {@code 0}, or {@link C#ROLE_FLAG_SUBTITLE} + * | {@link C#ROLE_FLAG_DESCRIBES_MUSIC_AND_SOUND} if the accessibility {@link CaptioningManager} + * is enabled. + */ + @C.RoleFlags public final int preferredTextRoleFlags; + /** + * Whether a text track with undetermined language should be selected if no track with {@link + * #preferredTextLanguage} is available, or if {@link #preferredTextLanguage} is unset. The + * default value is {@code false}. + */ + public final boolean selectUndeterminedTextLanguage; + /** + * Bitmask of selection flags that are disabled for text track selections. See {@link + * C.SelectionFlags}. The default value is {@code 0} (i.e. no flags). + */ + @C.SelectionFlags public final int disabledTextTrackSelectionFlags; + + /* package */ TrackSelectionParameters( + @Nullable String preferredAudioLanguage, + @Nullable String preferredTextLanguage, + @C.RoleFlags int preferredTextRoleFlags, + boolean selectUndeterminedTextLanguage, + @C.SelectionFlags int disabledTextTrackSelectionFlags) { + // Audio + this.preferredAudioLanguage = Util.normalizeLanguageCode(preferredAudioLanguage); + // Text + this.preferredTextLanguage = Util.normalizeLanguageCode(preferredTextLanguage); + this.preferredTextRoleFlags = preferredTextRoleFlags; + this.selectUndeterminedTextLanguage = selectUndeterminedTextLanguage; + this.disabledTextTrackSelectionFlags = disabledTextTrackSelectionFlags; + } + + /* package */ TrackSelectionParameters(Parcel in) { + this.preferredAudioLanguage = in.readString(); + this.preferredTextLanguage = in.readString(); + this.preferredTextRoleFlags = in.readInt(); + this.selectUndeterminedTextLanguage = Util.readBoolean(in); + this.disabledTextTrackSelectionFlags = in.readInt(); + } + + /** Creates a new {@link Builder}, copying the initial values from this instance. */ + public Builder buildUpon() { + return new Builder(this); + } + + @Override + @SuppressWarnings("EqualsGetClass") + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + TrackSelectionParameters other = (TrackSelectionParameters) obj; + return TextUtils.equals(preferredAudioLanguage, other.preferredAudioLanguage) + && TextUtils.equals(preferredTextLanguage, other.preferredTextLanguage) + && preferredTextRoleFlags == other.preferredTextRoleFlags + && selectUndeterminedTextLanguage == other.selectUndeterminedTextLanguage + && disabledTextTrackSelectionFlags == other.disabledTextTrackSelectionFlags; + } + + @Override + public int hashCode() { + int result = 1; + result = 31 * result + (preferredAudioLanguage == null ? 0 : preferredAudioLanguage.hashCode()); + result = 31 * result + (preferredTextLanguage == null ? 0 : preferredTextLanguage.hashCode()); + result = 31 * result + preferredTextRoleFlags; + result = 31 * result + (selectUndeterminedTextLanguage ? 1 : 0); + result = 31 * result + disabledTextTrackSelectionFlags; + return result; + } + + // Parcelable implementation. + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeString(preferredAudioLanguage); + dest.writeString(preferredTextLanguage); + dest.writeInt(preferredTextRoleFlags); + Util.writeBoolean(dest, selectUndeterminedTextLanguage); + dest.writeInt(disabledTextTrackSelectionFlags); + } + + public static final Creator CREATOR = + new Creator() { + + @Override + public TrackSelectionParameters createFromParcel(Parcel in) { + return new TrackSelectionParameters(in); + } + + @Override + public TrackSelectionParameters[] newArray(int size) { + return new TrackSelectionParameters[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectionUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectionUtil.java new file mode 100644 index 0000000000..b2fcf5c13c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectionUtil.java @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.DefaultTrackSelector.SelectionOverride; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection.Definition; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** Track selection related utility methods. */ +public final class TrackSelectionUtil { + + private TrackSelectionUtil() {} + + /** Functional interface to create a single adaptive track selection. */ + public interface AdaptiveTrackSelectionFactory { + + /** + * Creates an adaptive track selection for the provided track selection definition. + * + * @param trackSelectionDefinition A {@link Definition} for the track selection. + * @return The created track selection. + */ + TrackSelection createAdaptiveTrackSelection(Definition trackSelectionDefinition); + } + + /** + * Creates track selections for an array of track selection definitions, with at most one + * multi-track adaptive selection. + * + * @param definitions The list of track selection {@link Definition definitions}. May include null + * values. + * @param adaptiveTrackSelectionFactory A factory for the multi-track adaptive track selection. + * @return The array of created track selection. For null entries in {@code definitions} returns + * null values. + */ + public static @NullableType TrackSelection[] createTrackSelectionsForDefinitions( + @NullableType Definition[] definitions, + AdaptiveTrackSelectionFactory adaptiveTrackSelectionFactory) { + TrackSelection[] selections = new TrackSelection[definitions.length]; + boolean createdAdaptiveTrackSelection = false; + for (int i = 0; i < definitions.length; i++) { + Definition definition = definitions[i]; + if (definition == null) { + continue; + } + if (definition.tracks.length > 1 && !createdAdaptiveTrackSelection) { + createdAdaptiveTrackSelection = true; + selections[i] = adaptiveTrackSelectionFactory.createAdaptiveTrackSelection(definition); + } else { + selections[i] = + new FixedTrackSelection( + definition.group, definition.tracks[0], definition.reason, definition.data); + } + } + return selections; + } + + /** + * Updates {@link DefaultTrackSelector.Parameters} with an override. + * + * @param parameters The current {@link DefaultTrackSelector.Parameters} to build upon. + * @param rendererIndex The renderer index to update. + * @param trackGroupArray The {@link TrackGroupArray} of the renderer. + * @param isDisabled Whether the renderer should be set disabled. + * @param override An optional override for the renderer. If null, no override will be set and an + * existing override for this renderer will be cleared. + * @return The updated {@link DefaultTrackSelector.Parameters}. + */ + public static DefaultTrackSelector.Parameters updateParametersWithOverride( + DefaultTrackSelector.Parameters parameters, + int rendererIndex, + TrackGroupArray trackGroupArray, + boolean isDisabled, + @Nullable SelectionOverride override) { + DefaultTrackSelector.ParametersBuilder builder = + parameters + .buildUpon() + .clearSelectionOverrides(rendererIndex) + .setRendererDisabled(rendererIndex, isDisabled); + if (override != null) { + builder.setSelectionOverride(rendererIndex, trackGroupArray, override); + } + return builder.build(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelector.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelector.java new file mode 100644 index 0000000000..878031824d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelector.java @@ -0,0 +1,157 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Renderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererConfiguration; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource.MediaPeriodId; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.BandwidthMeter; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * The component of an {@link ExoPlayer} responsible for selecting tracks to be consumed by each of + * the player's {@link Renderer}s. The {@link DefaultTrackSelector} implementation should be + * suitable for most use cases. + * + *

Interactions with the player

+ * + * The following interactions occur between the player and its track selector during playback. + * + *
    + *
  • When the player is created it will initialize the track selector by calling {@link + * #init(InvalidationListener, BandwidthMeter)}. + *
  • When the player needs to make a track selection it will call {@link + * #selectTracks(RendererCapabilities[], TrackGroupArray, MediaPeriodId, Timeline)}. This + * typically occurs at the start of playback, when the player starts to buffer a new period of + * the media being played, and when the track selector invalidates its previous selections. + *
  • The player may perform a track selection well in advance of the selected tracks becoming + * active, where active is defined to mean that the renderers are actually consuming media + * corresponding to the selection that was made. For example when playing media containing + * multiple periods, the track selection for a period is made when the player starts to buffer + * that period. Hence if the player's buffering policy is to maintain a 30 second buffer, the + * selection will occur approximately 30 seconds in advance of it becoming active. In fact the + * selection may never become active, for example if the user seeks to some other period of + * the media during the 30 second gap. The player indicates to the track selector when a + * selection it has previously made becomes active by calling {@link + * #onSelectionActivated(Object)}. + *
  • If the track selector wishes to indicate to the player that selections it has previously + * made are invalid, it can do so by calling {@link + * InvalidationListener#onTrackSelectionsInvalidated()} on the {@link InvalidationListener} + * that was passed to {@link #init(InvalidationListener, BandwidthMeter)}. A track selector + * may wish to do this if its configuration has changed, for example if it now wishes to + * prefer audio tracks in a particular language. This will trigger the player to make new + * track selections. Note that the player will have to re-buffer in the case that the new + * track selection for the currently playing period differs from the one that was invalidated. + *
+ * + *

Renderer configuration

+ * + * The {@link TrackSelectorResult} returned by {@link #selectTracks(RendererCapabilities[], + * TrackGroupArray, MediaPeriodId, Timeline)} contains not only {@link TrackSelection}s for each + * renderer, but also {@link RendererConfiguration}s defining configuration parameters that the + * renderers should apply when consuming the corresponding media. Whilst it may seem counter- + * intuitive for a track selector to also specify renderer configuration information, in practice + * the two are tightly bound together. It may only be possible to play a certain combination tracks + * if the renderers are configured in a particular way. Equally, it may only be possible to + * configure renderers in a particular way if certain tracks are selected. Hence it makes sense to + * determine the track selection and corresponding renderer configurations in a single step. + * + *

Threading model

+ * + * All calls made by the player into the track selector are on the player's internal playback + * thread. The track selector may call {@link InvalidationListener#onTrackSelectionsInvalidated()} + * from any thread. + */ +public abstract class TrackSelector { + + /** + * Notified when selections previously made by a {@link TrackSelector} are no longer valid. + */ + public interface InvalidationListener { + + /** + * Called by a {@link TrackSelector} to indicate that selections it has previously made are no + * longer valid. May be called from any thread. + */ + void onTrackSelectionsInvalidated(); + + } + + @Nullable private InvalidationListener listener; + @Nullable private BandwidthMeter bandwidthMeter; + + /** + * Called by the player to initialize the selector. + * + * @param listener An invalidation listener that the selector can call to indicate that selections + * it has previously made are no longer valid. + * @param bandwidthMeter A bandwidth meter which can be used by track selections to select tracks. + */ + public final void init(InvalidationListener listener, BandwidthMeter bandwidthMeter) { + this.listener = listener; + this.bandwidthMeter = bandwidthMeter; + } + + /** + * Called by the player to perform a track selection. + * + * @param rendererCapabilities The {@link RendererCapabilities} of the renderers for which tracks + * are to be selected. + * @param trackGroups The available track groups. + * @param periodId The {@link MediaPeriodId} of the period for which tracks are to be selected. + * @param timeline The {@link Timeline} holding the period for which tracks are to be selected. + * @return A {@link TrackSelectorResult} describing the track selections. + * @throws ExoPlaybackException If an error occurs selecting tracks. + */ + public abstract TrackSelectorResult selectTracks( + RendererCapabilities[] rendererCapabilities, + TrackGroupArray trackGroups, + MediaPeriodId periodId, + Timeline timeline) + throws ExoPlaybackException; + + /** + * Called by the player when a {@link TrackSelectorResult} previously generated by {@link + * #selectTracks(RendererCapabilities[], TrackGroupArray, MediaPeriodId, Timeline)} is activated. + * + * @param info The value of {@link TrackSelectorResult#info} in the activated selection. + */ + public abstract void onSelectionActivated(Object info); + + /** + * Calls {@link InvalidationListener#onTrackSelectionsInvalidated()} to invalidate all previously + * generated track selections. + */ + protected final void invalidate() { + if (listener != null) { + listener.onTrackSelectionsInvalidated(); + } + } + + /** + * Returns a bandwidth meter which can be used by track selections to select tracks. Must only be + * called after {@link #init(InvalidationListener, BandwidthMeter)} has been called. + */ + protected final BandwidthMeter getBandwidthMeter() { + return Assertions.checkNotNull(bandwidthMeter); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectorResult.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectorResult.java new file mode 100644 index 0000000000..9c005497cc --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/TrackSelectorResult.java @@ -0,0 +1,105 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererConfiguration; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** + * The result of a {@link TrackSelector} operation. + */ +public final class TrackSelectorResult { + + /** The number of selections in the result. Greater than or equal to zero. */ + public final int length; + /** + * A {@link RendererConfiguration} for each renderer. A null entry indicates the corresponding + * renderer should be disabled. + */ + public final @NullableType RendererConfiguration[] rendererConfigurations; + /** + * A {@link TrackSelectionArray} containing the track selection for each renderer. + */ + public final TrackSelectionArray selections; + /** + * An opaque object that will be returned to {@link TrackSelector#onSelectionActivated(Object)} + * should the selections be activated. + */ + public final Object info; + + /** + * @param rendererConfigurations A {@link RendererConfiguration} for each renderer. A null entry + * indicates the corresponding renderer should be disabled. + * @param selections A {@link TrackSelectionArray} containing the selection for each renderer. + * @param info An opaque object that will be returned to {@link + * TrackSelector#onSelectionActivated(Object)} should the selection be activated. + */ + public TrackSelectorResult( + @NullableType RendererConfiguration[] rendererConfigurations, + @NullableType TrackSelection[] selections, + Object info) { + this.rendererConfigurations = rendererConfigurations; + this.selections = new TrackSelectionArray(selections); + this.info = info; + length = rendererConfigurations.length; + } + + /** Returns whether the renderer at the specified index is enabled. */ + public boolean isRendererEnabled(int index) { + return rendererConfigurations[index] != null; + } + + /** + * Returns whether this result is equivalent to {@code other} for all renderers. + * + * @param other The other {@link TrackSelectorResult}. May be null, in which case {@code false} + * will be returned. + * @return Whether this result is equivalent to {@code other} for all renderers. + */ + public boolean isEquivalent(@Nullable TrackSelectorResult other) { + if (other == null || other.selections.length != selections.length) { + return false; + } + for (int i = 0; i < selections.length; i++) { + if (!isEquivalent(other, i)) { + return false; + } + } + return true; + } + + /** + * Returns whether this result is equivalent to {@code other} for the renderer at the given index. + * The results are equivalent if they have equal track selections and configurations for the + * renderer. + * + * @param other The other {@link TrackSelectorResult}. May be null, in which case {@code false} + * will be returned. + * @param index The renderer index to check for equivalence. + * @return Whether this result is equivalent to {@code other} for the renderer at the specified + * index. + */ + public boolean isEquivalent(@Nullable TrackSelectorResult other, int index) { + if (other == null) { + return false; + } + return Util.areEqual(rendererConfigurations[index], other.rendererConfigurations[index]) + && Util.areEqual(selections.get(index), other.selections.get(index)); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/package-info.java new file mode 100644 index 0000000000..4a04290d0f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/trackselection/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/Allocation.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/Allocation.java new file mode 100644 index 0000000000..87dd142e6a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/Allocation.java @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +/** + * An allocation within a byte array. + *

+ * The allocation's length is obtained by calling {@link Allocator#getIndividualAllocationLength()} + * on the {@link Allocator} from which it was obtained. + */ +public final class Allocation { + + /** + * The array containing the allocated space. The allocated space might not be at the start of the + * array, and so {@link #offset} must be used when indexing into it. + */ + public final byte[] data; + + /** + * The offset of the allocated space in {@link #data}. + */ + public final int offset; + + /** + * @param data The array containing the allocated space. + * @param offset The offset of the allocated space in {@code data}. + */ + public Allocation(byte[] data, int offset) { + this.data = data; + this.offset = offset; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/Allocator.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/Allocator.java new file mode 100644 index 0000000000..d554d0fe7f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/Allocator.java @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +/** + * A source of allocations. + */ +public interface Allocator { + + /** + * Obtain an {@link Allocation}. + *

+ * When the caller has finished with the {@link Allocation}, it should be returned by calling + * {@link #release(Allocation)}. + * + * @return The {@link Allocation}. + */ + Allocation allocate(); + + /** + * Releases an {@link Allocation} back to the allocator. + * + * @param allocation The {@link Allocation} being released. + */ + void release(Allocation allocation); + + /** + * Releases an array of {@link Allocation}s back to the allocator. + * + * @param allocations The array of {@link Allocation}s being released. + */ + void release(Allocation[] allocations); + + /** + * Hints to the allocator that it should make a best effort to release any excess + * {@link Allocation}s. + */ + void trim(); + + /** + * Returns the total number of bytes currently allocated. + */ + int getTotalBytesAllocated(); + + /** + * Returns the length of each individual {@link Allocation}. + */ + int getIndividualAllocationLength(); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/AssetDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/AssetDataSource.java new file mode 100644 index 0000000000..70cd1de8fe --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/AssetDataSource.java @@ -0,0 +1,150 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.content.Context; +import android.content.res.AssetManager; +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.EOFException; +import java.io.IOException; +import java.io.InputStream; + +/** A {@link DataSource} for reading from a local asset. */ +public final class AssetDataSource extends BaseDataSource { + + /** + * Thrown when an {@link IOException} is encountered reading a local asset. + */ + public static final class AssetDataSourceException extends IOException { + + public AssetDataSourceException(IOException cause) { + super(cause); + } + + } + + private final AssetManager assetManager; + + @Nullable private Uri uri; + @Nullable private InputStream inputStream; + private long bytesRemaining; + private boolean opened; + + /** @param context A context. */ + public AssetDataSource(Context context) { + super(/* isNetwork= */ false); + this.assetManager = context.getAssets(); + } + + @Override + public long open(DataSpec dataSpec) throws AssetDataSourceException { + try { + uri = dataSpec.uri; + String path = Assertions.checkNotNull(uri.getPath()); + if (path.startsWith("/android_asset/")) { + path = path.substring(15); + } else if (path.startsWith("/")) { + path = path.substring(1); + } + transferInitializing(dataSpec); + inputStream = assetManager.open(path, AssetManager.ACCESS_RANDOM); + long skipped = inputStream.skip(dataSpec.position); + if (skipped < dataSpec.position) { + // assetManager.open() returns an AssetInputStream, whose skip() implementation only skips + // fewer bytes than requested if the skip is beyond the end of the asset's data. + throw new EOFException(); + } + if (dataSpec.length != C.LENGTH_UNSET) { + bytesRemaining = dataSpec.length; + } else { + bytesRemaining = inputStream.available(); + if (bytesRemaining == Integer.MAX_VALUE) { + // assetManager.open() returns an AssetInputStream, whose available() implementation + // returns Integer.MAX_VALUE if the remaining length is greater than (or equal to) + // Integer.MAX_VALUE. We don't know the true length in this case, so treat as unbounded. + bytesRemaining = C.LENGTH_UNSET; + } + } + } catch (IOException e) { + throw new AssetDataSourceException(e); + } + + opened = true; + transferStarted(dataSpec); + return bytesRemaining; + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws AssetDataSourceException { + if (readLength == 0) { + return 0; + } else if (bytesRemaining == 0) { + return C.RESULT_END_OF_INPUT; + } + + int bytesRead; + try { + int bytesToRead = bytesRemaining == C.LENGTH_UNSET ? readLength + : (int) Math.min(bytesRemaining, readLength); + bytesRead = castNonNull(inputStream).read(buffer, offset, bytesToRead); + } catch (IOException e) { + throw new AssetDataSourceException(e); + } + + if (bytesRead == -1) { + if (bytesRemaining != C.LENGTH_UNSET) { + // End of stream reached having not read sufficient data. + throw new AssetDataSourceException(new EOFException()); + } + return C.RESULT_END_OF_INPUT; + } + if (bytesRemaining != C.LENGTH_UNSET) { + bytesRemaining -= bytesRead; + } + bytesTransferred(bytesRead); + return bytesRead; + } + + @Override + @Nullable + public Uri getUri() { + return uri; + } + + @Override + public void close() throws AssetDataSourceException { + uri = null; + try { + if (inputStream != null) { + inputStream.close(); + } + } catch (IOException e) { + throw new AssetDataSourceException(e); + } finally { + inputStream = null; + if (opened) { + opened = false; + transferEnded(); + } + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/BandwidthMeter.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/BandwidthMeter.java new file mode 100644 index 0000000000..5606b45702 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/BandwidthMeter.java @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.os.Handler; +import androidx.annotation.Nullable; + +/** + * Provides estimates of the currently available bandwidth. + */ +public interface BandwidthMeter { + + /** + * A listener of {@link BandwidthMeter} events. + */ + interface EventListener { + + /** + * Called periodically to indicate that bytes have been transferred or the estimated bitrate has + * changed. + * + *

Note: The estimated bitrate is typically derived from more information than just {@code + * bytes} and {@code elapsedMs}. + * + * @param elapsedMs The time taken to transfer {@code bytesTransferred}, in milliseconds. This + * is at most the elapsed time since the last callback, but may be less if there were + * periods during which data was not being transferred. + * @param bytesTransferred The number of bytes transferred since the last callback. + * @param bitrateEstimate The estimated bitrate in bits/sec. + */ + void onBandwidthSample(int elapsedMs, long bytesTransferred, long bitrateEstimate); + } + + /** Returns the estimated bitrate. */ + long getBitrateEstimate(); + + /** + * Returns the {@link TransferListener} that this instance uses to gather bandwidth information + * from data transfers. May be null if the implementation does not listen to data transfers. + */ + @Nullable + TransferListener getTransferListener(); + + /** + * Adds an {@link EventListener}. + * + * @param eventHandler A handler for events. + * @param eventListener A listener of events. + */ + void addEventListener(Handler eventHandler, EventListener eventListener); + + /** + * Removes an {@link EventListener}. + * + * @param eventListener The listener to be removed. + */ + void removeEventListener(EventListener eventListener); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/BaseDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/BaseDataSource.java new file mode 100644 index 0000000000..3838094927 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/BaseDataSource.java @@ -0,0 +1,102 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import androidx.annotation.Nullable; +import java.util.ArrayList; + +/** + * Base {@link DataSource} implementation to keep a list of {@link TransferListener}s. + * + *

Subclasses must call {@link #transferInitializing(DataSpec)}, {@link + * #transferStarted(DataSpec)}, {@link #bytesTransferred(int)}, and {@link #transferEnded()} to + * inform listeners of data transfers. + */ +public abstract class BaseDataSource implements DataSource { + + private final boolean isNetwork; + private final ArrayList listeners; + + private int listenerCount; + @Nullable private DataSpec dataSpec; + + /** + * Creates base data source. + * + * @param isNetwork Whether the data source loads data through a network. + */ + protected BaseDataSource(boolean isNetwork) { + this.isNetwork = isNetwork; + this.listeners = new ArrayList<>(/* initialCapacity= */ 1); + } + + @Override + public final void addTransferListener(TransferListener transferListener) { + if (!listeners.contains(transferListener)) { + listeners.add(transferListener); + listenerCount++; + } + } + + /** + * Notifies listeners that data transfer for the specified {@link DataSpec} is being initialized. + * + * @param dataSpec {@link DataSpec} describing the data for initializing transfer. + */ + protected final void transferInitializing(DataSpec dataSpec) { + for (int i = 0; i < listenerCount; i++) { + listeners.get(i).onTransferInitializing(/* source= */ this, dataSpec, isNetwork); + } + } + + /** + * Notifies listeners that data transfer for the specified {@link DataSpec} started. + * + * @param dataSpec {@link DataSpec} describing the data being transferred. + */ + protected final void transferStarted(DataSpec dataSpec) { + this.dataSpec = dataSpec; + for (int i = 0; i < listenerCount; i++) { + listeners.get(i).onTransferStart(/* source= */ this, dataSpec, isNetwork); + } + } + + /** + * Notifies listeners that bytes were transferred. + * + * @param bytesTransferred The number of bytes transferred since the previous call to this method + * (or if the first call, since the transfer was started). + */ + protected final void bytesTransferred(int bytesTransferred) { + DataSpec dataSpec = castNonNull(this.dataSpec); + for (int i = 0; i < listenerCount; i++) { + listeners + .get(i) + .onBytesTransferred(/* source= */ this, dataSpec, isNetwork, bytesTransferred); + } + } + + /** Notifies listeners that a transfer ended. */ + protected final void transferEnded() { + DataSpec dataSpec = castNonNull(this.dataSpec); + for (int i = 0; i < listenerCount; i++) { + listeners.get(i).onTransferEnd(/* source= */ this, dataSpec, isNetwork); + } + this.dataSpec = null; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSink.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSink.java new file mode 100644 index 0000000000..4aa66538ff --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSink.java @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * A {@link DataSink} for writing to a byte array. + */ +public final class ByteArrayDataSink implements DataSink { + + private @MonotonicNonNull ByteArrayOutputStream stream; + + @Override + public void open(DataSpec dataSpec) { + if (dataSpec.length == C.LENGTH_UNSET) { + stream = new ByteArrayOutputStream(); + } else { + Assertions.checkArgument(dataSpec.length <= Integer.MAX_VALUE); + stream = new ByteArrayOutputStream((int) dataSpec.length); + } + } + + @Override + public void close() throws IOException { + castNonNull(stream).close(); + } + + @Override + public void write(byte[] buffer, int offset, int length) { + castNonNull(stream).write(buffer, offset, length); + } + + /** + * Returns the data written to the sink since the last call to {@link #open(DataSpec)}, or null if + * {@link #open(DataSpec)} has never been called. + */ + @Nullable + public byte[] getData() { + return stream == null ? null : stream.toByteArray(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSource.java new file mode 100644 index 0000000000..0be103701d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ByteArrayDataSource.java @@ -0,0 +1,91 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; + +/** A {@link DataSource} for reading from a byte array. */ +public final class ByteArrayDataSource extends BaseDataSource { + + private final byte[] data; + + @Nullable private Uri uri; + private int readPosition; + private int bytesRemaining; + private boolean opened; + + /** + * @param data The data to be read. + */ + public ByteArrayDataSource(byte[] data) { + super(/* isNetwork= */ false); + Assertions.checkNotNull(data); + Assertions.checkArgument(data.length > 0); + this.data = data; + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + uri = dataSpec.uri; + transferInitializing(dataSpec); + readPosition = (int) dataSpec.position; + bytesRemaining = (int) ((dataSpec.length == C.LENGTH_UNSET) + ? (data.length - dataSpec.position) : dataSpec.length); + if (bytesRemaining <= 0 || readPosition + bytesRemaining > data.length) { + throw new IOException("Unsatisfiable range: [" + readPosition + ", " + dataSpec.length + + "], length: " + data.length); + } + opened = true; + transferStarted(dataSpec); + return bytesRemaining; + } + + @Override + public int read(byte[] buffer, int offset, int readLength) { + if (readLength == 0) { + return 0; + } else if (bytesRemaining == 0) { + return C.RESULT_END_OF_INPUT; + } + + readLength = Math.min(readLength, bytesRemaining); + System.arraycopy(data, readPosition, buffer, offset, readLength); + readPosition += readLength; + bytesRemaining -= readLength; + bytesTransferred(readLength); + return readLength; + } + + @Override + @Nullable + public Uri getUri() { + return uri; + } + + @Override + public void close() { + if (opened) { + opened = false; + transferEnded(); + } + uri = null; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ContentDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ContentDataSource.java new file mode 100644 index 0000000000..b73d9d6375 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ContentDataSource.java @@ -0,0 +1,173 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.content.ContentResolver; +import android.content.Context; +import android.content.res.AssetFileDescriptor; +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.EOFException; +import java.io.FileInputStream; +import java.io.FileNotFoundException; +import java.io.IOException; +import java.nio.channels.FileChannel; + +/** A {@link DataSource} for reading from a content URI. */ +public final class ContentDataSource extends BaseDataSource { + + /** + * Thrown when an {@link IOException} is encountered reading from a content URI. + */ + public static class ContentDataSourceException extends IOException { + + public ContentDataSourceException(IOException cause) { + super(cause); + } + + } + + private final ContentResolver resolver; + + @Nullable private Uri uri; + @Nullable private AssetFileDescriptor assetFileDescriptor; + @Nullable private FileInputStream inputStream; + private long bytesRemaining; + private boolean opened; + + /** + * @param context A context. + */ + public ContentDataSource(Context context) { + super(/* isNetwork= */ false); + this.resolver = context.getContentResolver(); + } + + @Override + public long open(DataSpec dataSpec) throws ContentDataSourceException { + try { + Uri uri = dataSpec.uri; + this.uri = uri; + + transferInitializing(dataSpec); + AssetFileDescriptor assetFileDescriptor = resolver.openAssetFileDescriptor(uri, "r"); + this.assetFileDescriptor = assetFileDescriptor; + if (assetFileDescriptor == null) { + throw new FileNotFoundException("Could not open file descriptor for: " + uri); + } + FileInputStream inputStream = new FileInputStream(assetFileDescriptor.getFileDescriptor()); + this.inputStream = inputStream; + + long assetStartOffset = assetFileDescriptor.getStartOffset(); + long skipped = inputStream.skip(assetStartOffset + dataSpec.position) - assetStartOffset; + if (skipped != dataSpec.position) { + // We expect the skip to be satisfied in full. If it isn't then we're probably trying to + // skip beyond the end of the data. + throw new EOFException(); + } + if (dataSpec.length != C.LENGTH_UNSET) { + bytesRemaining = dataSpec.length; + } else { + long assetFileDescriptorLength = assetFileDescriptor.getLength(); + if (assetFileDescriptorLength == AssetFileDescriptor.UNKNOWN_LENGTH) { + // The asset must extend to the end of the file. If FileInputStream.getChannel().size() + // returns 0 then the remaining length cannot be determined. + FileChannel channel = inputStream.getChannel(); + long channelSize = channel.size(); + bytesRemaining = channelSize == 0 ? C.LENGTH_UNSET : channelSize - channel.position(); + } else { + bytesRemaining = assetFileDescriptorLength - skipped; + } + } + } catch (IOException e) { + throw new ContentDataSourceException(e); + } + + opened = true; + transferStarted(dataSpec); + + return bytesRemaining; + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws ContentDataSourceException { + if (readLength == 0) { + return 0; + } else if (bytesRemaining == 0) { + return C.RESULT_END_OF_INPUT; + } + + int bytesRead; + try { + int bytesToRead = bytesRemaining == C.LENGTH_UNSET ? readLength + : (int) Math.min(bytesRemaining, readLength); + bytesRead = castNonNull(inputStream).read(buffer, offset, bytesToRead); + } catch (IOException e) { + throw new ContentDataSourceException(e); + } + + if (bytesRead == -1) { + if (bytesRemaining != C.LENGTH_UNSET) { + // End of stream reached having not read sufficient data. + throw new ContentDataSourceException(new EOFException()); + } + return C.RESULT_END_OF_INPUT; + } + if (bytesRemaining != C.LENGTH_UNSET) { + bytesRemaining -= bytesRead; + } + bytesTransferred(bytesRead); + return bytesRead; + } + + @Override + @Nullable + public Uri getUri() { + return uri; + } + + @SuppressWarnings("Finally") + @Override + public void close() throws ContentDataSourceException { + uri = null; + try { + if (inputStream != null) { + inputStream.close(); + } + } catch (IOException e) { + throw new ContentDataSourceException(e); + } finally { + inputStream = null; + try { + if (assetFileDescriptor != null) { + assetFileDescriptor.close(); + } + } catch (IOException e) { + throw new ContentDataSourceException(e); + } finally { + assetFileDescriptor = null; + if (opened) { + opened = false; + transferEnded(); + } + } + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSchemeDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSchemeDataSource.java new file mode 100644 index 0000000000..57420250ac --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSchemeDataSource.java @@ -0,0 +1,110 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.net.Uri; +import android.util.Base64; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.net.URLDecoder; + +/** A {@link DataSource} for reading data URLs, as defined by RFC 2397. */ +public final class DataSchemeDataSource extends BaseDataSource { + + public static final String SCHEME_DATA = "data"; + + @Nullable private DataSpec dataSpec; + @Nullable private byte[] data; + private int endPosition; + private int readPosition; + + // the constructor does not initialize fields: data + @SuppressWarnings("nullness:initialization.fields.uninitialized") + public DataSchemeDataSource() { + super(/* isNetwork= */ false); + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + transferInitializing(dataSpec); + this.dataSpec = dataSpec; + readPosition = (int) dataSpec.position; + Uri uri = dataSpec.uri; + String scheme = uri.getScheme(); + if (!SCHEME_DATA.equals(scheme)) { + throw new ParserException("Unsupported scheme: " + scheme); + } + String[] uriParts = Util.split(uri.getSchemeSpecificPart(), ","); + if (uriParts.length != 2) { + throw new ParserException("Unexpected URI format: " + uri); + } + String dataString = uriParts[1]; + if (uriParts[0].contains(";base64")) { + try { + data = Base64.decode(dataString, 0); + } catch (IllegalArgumentException e) { + throw new ParserException("Error while parsing Base64 encoded string: " + dataString, e); + } + } else { + // TODO: Add support for other charsets. + data = Util.getUtf8Bytes(URLDecoder.decode(dataString, C.ASCII_NAME)); + } + endPosition = + dataSpec.length != C.LENGTH_UNSET ? (int) dataSpec.length + readPosition : data.length; + if (endPosition > data.length || readPosition > endPosition) { + data = null; + throw new DataSourceException(DataSourceException.POSITION_OUT_OF_RANGE); + } + transferStarted(dataSpec); + return (long) endPosition - readPosition; + } + + @Override + public int read(byte[] buffer, int offset, int readLength) { + if (readLength == 0) { + return 0; + } + int remainingBytes = endPosition - readPosition; + if (remainingBytes == 0) { + return C.RESULT_END_OF_INPUT; + } + readLength = Math.min(readLength, remainingBytes); + System.arraycopy(castNonNull(data), readPosition, buffer, offset, readLength); + readPosition += readLength; + bytesTransferred(readLength); + return readLength; + } + + @Override + @Nullable + public Uri getUri() { + return dataSpec != null ? dataSpec.uri : null; + } + + @Override + public void close() { + if (data != null) { + data = null; + transferEnded(); + } + dataSpec = null; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSink.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSink.java new file mode 100644 index 0000000000..c85ec8cfca --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSink.java @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import java.io.IOException; + +/** + * A component to which streams of data can be written. + */ +public interface DataSink { + + /** + * A factory for {@link DataSink} instances. + */ + interface Factory { + + /** + * Creates a {@link DataSink} instance. + */ + DataSink createDataSink(); + + } + + /** + * Opens the sink to consume the specified data. + * + *

Note: If an {@link IOException} is thrown, callers must still call {@link #close()} to + * ensure that any partial effects of the invocation are cleaned up. + * + * @param dataSpec Defines the data to be consumed. + * @throws IOException If an error occurs opening the sink. + */ + void open(DataSpec dataSpec) throws IOException; + + /** + * Consumes the provided data. + * + * @param buffer The buffer from which data should be consumed. + * @param offset The offset of the data to consume in {@code buffer}. + * @param length The length of the data to consume, in bytes. + * @throws IOException If an error occurs writing to the sink. + */ + void write(byte[] buffer, int offset, int length) throws IOException; + + /** + * Closes the sink. + * + *

Note: This method must be called even if the corresponding call to {@link #open(DataSpec)} + * threw an {@link IOException}. See {@link #open(DataSpec)} for more details. + * + * @throws IOException If an error occurs closing the sink. + */ + void close() throws IOException; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSource.java new file mode 100644 index 0000000000..26529253f8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSource.java @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.IOException; +import java.util.Collections; +import java.util.List; +import java.util.Map; + +/** + * A component from which streams of data can be read. + */ +public interface DataSource { + + /** + * A factory for {@link DataSource} instances. + */ + interface Factory { + + /** + * Creates a {@link DataSource} instance. + */ + DataSource createDataSource(); + } + + /** + * Adds a {@link TransferListener} to listen to data transfers. This method is not thread-safe. + * + * @param transferListener A {@link TransferListener}. + */ + void addTransferListener(TransferListener transferListener); + + /** + * Opens the source to read the specified data. + *

+ * Note: If an {@link IOException} is thrown, callers must still call {@link #close()} to ensure + * that any partial effects of the invocation are cleaned up. + * + * @param dataSpec Defines the data to be read. + * @throws IOException If an error occurs opening the source. {@link DataSourceException} can be + * thrown or used as a cause of the thrown exception to specify the reason of the error. + * @return The number of bytes that can be read from the opened source. For unbounded requests + * (i.e. requests where {@link DataSpec#length} equals {@link C#LENGTH_UNSET}) this value + * is the resolved length of the request, or {@link C#LENGTH_UNSET} if the length is still + * unresolved. For all other requests, the value returned will be equal to the request's + * {@link DataSpec#length}. + */ + long open(DataSpec dataSpec) throws IOException; + + /** + * Reads up to {@code readLength} bytes of data and stores them into {@code buffer}, starting at + * index {@code offset}. + * + *

If {@code readLength} is zero then 0 is returned. Otherwise, if no data is available because + * the end of the opened range has been reached, then {@link C#RESULT_END_OF_INPUT} is returned. + * Otherwise, the call will block until at least one byte of data has been read and the number of + * bytes read is returned. + * + * @param buffer The buffer into which the read data should be stored. + * @param offset The start offset into {@code buffer} at which data should be written. + * @param readLength The maximum number of bytes to read. + * @return The number of bytes read, or {@link C#RESULT_END_OF_INPUT} if no data is available + * because the end of the opened range has been reached. + * @throws IOException If an error occurs reading from the source. + */ + int read(byte[] buffer, int offset, int readLength) throws IOException; + + /** + * When the source is open, returns the {@link Uri} from which data is being read. The returned + * {@link Uri} will be identical to the one passed {@link #open(DataSpec)} in the {@link DataSpec} + * unless redirection has occurred. If redirection has occurred, the {@link Uri} after redirection + * is returned. + * + * @return The {@link Uri} from which data is being read, or null if the source is not open. + */ + @Nullable Uri getUri(); + + /** + * When the source is open, returns the response headers associated with the last {@link #open} + * call. Otherwise, returns an empty map. + */ + default Map> getResponseHeaders() { + return Collections.emptyMap(); + } + + /** + * Closes the source. + *

+ * Note: This method must be called even if the corresponding call to {@link #open(DataSpec)} + * threw an {@link IOException}. See {@link #open(DataSpec)} for more details. + * + * @throws IOException If an error occurs closing the source. + */ + void close() throws IOException; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSourceException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSourceException.java new file mode 100644 index 0000000000..13c34d1dfb --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSourceException.java @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import java.io.IOException; + +/** + * Used to specify reason of a DataSource error. + */ +public final class DataSourceException extends IOException { + + public static final int POSITION_OUT_OF_RANGE = 0; + + /** + * The reason of this {@link DataSourceException}. It can only be {@link #POSITION_OUT_OF_RANGE}. + */ + public final int reason; + + /** + * Constructs a DataSourceException. + * + * @param reason Reason of the error. It can only be {@link #POSITION_OUT_OF_RANGE}. + */ + public DataSourceException(int reason) { + this.reason = reason; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSourceInputStream.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSourceInputStream.java new file mode 100644 index 0000000000..c25ba4c10a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSourceInputStream.java @@ -0,0 +1,107 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import androidx.annotation.NonNull; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.io.InputStream; + +/** + * Allows data corresponding to a given {@link DataSpec} to be read from a {@link DataSource} and + * consumed through an {@link InputStream}. + */ +public final class DataSourceInputStream extends InputStream { + + private final DataSource dataSource; + private final DataSpec dataSpec; + private final byte[] singleByteArray; + + private boolean opened = false; + private boolean closed = false; + private long totalBytesRead; + + /** + * @param dataSource The {@link DataSource} from which the data should be read. + * @param dataSpec The {@link DataSpec} defining the data to be read from {@code dataSource}. + */ + public DataSourceInputStream(DataSource dataSource, DataSpec dataSpec) { + this.dataSource = dataSource; + this.dataSpec = dataSpec; + singleByteArray = new byte[1]; + } + + /** + * Returns the total number of bytes that have been read or skipped. + */ + public long bytesRead() { + return totalBytesRead; + } + + /** + * Optional call to open the underlying {@link DataSource}. + *

+ * Calling this method does nothing if the {@link DataSource} is already open. Calling this + * method is optional, since the read and skip methods will automatically open the underlying + * {@link DataSource} if it's not open already. + * + * @throws IOException If an error occurs opening the {@link DataSource}. + */ + public void open() throws IOException { + checkOpened(); + } + + @Override + public int read() throws IOException { + int length = read(singleByteArray); + return length == -1 ? -1 : (singleByteArray[0] & 0xFF); + } + + @Override + public int read(@NonNull byte[] buffer) throws IOException { + return read(buffer, 0, buffer.length); + } + + @Override + public int read(@NonNull byte[] buffer, int offset, int length) throws IOException { + Assertions.checkState(!closed); + checkOpened(); + int bytesRead = dataSource.read(buffer, offset, length); + if (bytesRead == C.RESULT_END_OF_INPUT) { + return -1; + } else { + totalBytesRead += bytesRead; + return bytesRead; + } + } + + @Override + public void close() throws IOException { + if (!closed) { + dataSource.close(); + closed = true; + } + } + + private void checkOpened() throws IOException { + if (!opened) { + dataSource.open(dataSpec); + opened = true; + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSpec.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSpec.java new file mode 100644 index 0000000000..6a419c6632 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DataSpec.java @@ -0,0 +1,478 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; + +/** + * Defines a region of data. + */ +public final class DataSpec { + + /** + * The flags that apply to any request for data. Possible flag values are {@link + * #FLAG_ALLOW_GZIP}, {@link #FLAG_DONT_CACHE_IF_LENGTH_UNKNOWN} and {@link + * #FLAG_ALLOW_CACHE_FRAGMENTATION}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {FLAG_ALLOW_GZIP, FLAG_DONT_CACHE_IF_LENGTH_UNKNOWN, FLAG_ALLOW_CACHE_FRAGMENTATION}) + public @interface Flags {} + /** + * Allows an underlying network stack to request that the server use gzip compression. + * + *

Should not typically be set if the data being requested is already compressed (e.g. most + * audio and video requests). May be set when requesting other data. + * + *

When a {@link DataSource} is used to request data with this flag set, and if the {@link + * DataSource} does make a network request, then the value returned from {@link + * DataSource#open(DataSpec)} will typically be {@link C#LENGTH_UNSET}. The data read from {@link + * DataSource#read(byte[], int, int)} will be the decompressed data. + */ + public static final int FLAG_ALLOW_GZIP = 1; + /** Prevents caching if the length cannot be resolved when the {@link DataSource} is opened. */ + public static final int FLAG_DONT_CACHE_IF_LENGTH_UNKNOWN = 1 << 1; // 2 + /** + * Allows fragmentation of this request into multiple cache files, meaning a cache eviction policy + * will be able to evict individual fragments of the data. Depending on the cache implementation, + * setting this flag may also enable more concurrent access to the data (e.g. reading one fragment + * whilst writing another). + */ + public static final int FLAG_ALLOW_CACHE_FRAGMENTATION = 1 << 2; // 4 + + /** + * The set of HTTP methods that are supported by ExoPlayer {@link HttpDataSource}s. One of {@link + * #HTTP_METHOD_GET}, {@link #HTTP_METHOD_POST} or {@link #HTTP_METHOD_HEAD}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({HTTP_METHOD_GET, HTTP_METHOD_POST, HTTP_METHOD_HEAD}) + public @interface HttpMethod {} + + public static final int HTTP_METHOD_GET = 1; + public static final int HTTP_METHOD_POST = 2; + public static final int HTTP_METHOD_HEAD = 3; + + /** + * The source from which data should be read. + */ + public final Uri uri; + + /** + * The HTTP method, which will be used by {@link HttpDataSource} when requesting this DataSpec. + * This value will be ignored by non-http {@link DataSource}s. + */ + public final @HttpMethod int httpMethod; + + /** + * The HTTP request body, null otherwise. If the body is non-null, then httpBody.length will be + * non-zero. + */ + @Nullable public final byte[] httpBody; + + /** Immutable map containing the headers to use in HTTP requests. */ + public final Map httpRequestHeaders; + + /** The absolute position of the data in the full stream. */ + public final long absoluteStreamPosition; + /** + * The position of the data when read from {@link #uri}. + *

+ * Always equal to {@link #absoluteStreamPosition} unless the {@link #uri} defines the location + * of a subset of the underlying data. + */ + public final long position; + /** + * The length of the data, or {@link C#LENGTH_UNSET}. + */ + public final long length; + /** + * A key that uniquely identifies the original stream. Used for cache indexing. May be null if the + * data spec is not intended to be used in conjunction with a cache. + */ + @Nullable public final String key; + /** Request {@link Flags flags}. */ + public final @Flags int flags; + + /** + * Construct a data spec for the given uri and with {@link #key} set to null. + * + * @param uri {@link #uri}. + */ + public DataSpec(Uri uri) { + this(uri, 0); + } + + /** + * Construct a data spec for the given uri and with {@link #key} set to null. + * + * @param uri {@link #uri}. + * @param flags {@link #flags}. + */ + public DataSpec(Uri uri, @Flags int flags) { + this(uri, 0, C.LENGTH_UNSET, null, flags); + } + + /** + * Construct a data spec where {@link #position} equals {@link #absoluteStreamPosition}. + * + * @param uri {@link #uri}. + * @param absoluteStreamPosition {@link #absoluteStreamPosition}, equal to {@link #position}. + * @param length {@link #length}. + * @param key {@link #key}. + */ + public DataSpec(Uri uri, long absoluteStreamPosition, long length, @Nullable String key) { + this(uri, absoluteStreamPosition, absoluteStreamPosition, length, key, 0); + } + + /** + * Construct a data spec where {@link #position} equals {@link #absoluteStreamPosition}. + * + * @param uri {@link #uri}. + * @param absoluteStreamPosition {@link #absoluteStreamPosition}, equal to {@link #position}. + * @param length {@link #length}. + * @param key {@link #key}. + * @param flags {@link #flags}. + */ + public DataSpec( + Uri uri, long absoluteStreamPosition, long length, @Nullable String key, @Flags int flags) { + this(uri, absoluteStreamPosition, absoluteStreamPosition, length, key, flags); + } + + /** + * Construct a data spec where {@link #position} equals {@link #absoluteStreamPosition} and has + * request headers. + * + * @param uri {@link #uri}. + * @param absoluteStreamPosition {@link #absoluteStreamPosition}, equal to {@link #position}. + * @param length {@link #length}. + * @param key {@link #key}. + * @param flags {@link #flags}. + * @param httpRequestHeaders {@link #httpRequestHeaders} + */ + public DataSpec( + Uri uri, + long absoluteStreamPosition, + long length, + @Nullable String key, + @Flags int flags, + Map httpRequestHeaders) { + this( + uri, + inferHttpMethod(null), + null, + absoluteStreamPosition, + absoluteStreamPosition, + length, + key, + flags, + httpRequestHeaders); + } + + /** + * Construct a data spec where {@link #position} may differ from {@link #absoluteStreamPosition}. + * + * @param uri {@link #uri}. + * @param absoluteStreamPosition {@link #absoluteStreamPosition}. + * @param position {@link #position}. + * @param length {@link #length}. + * @param key {@link #key}. + * @param flags {@link #flags}. + */ + public DataSpec( + Uri uri, + long absoluteStreamPosition, + long position, + long length, + @Nullable String key, + @Flags int flags) { + this(uri, null, absoluteStreamPosition, position, length, key, flags); + } + + /** + * Construct a data spec by inferring the {@link #httpMethod} based on the {@code postBody} + * parameter. If postBody is non-null, then httpMethod is set to {@link #HTTP_METHOD_POST}. If + * postBody is null, then httpMethod is set to {@link #HTTP_METHOD_GET}. + * + * @param uri {@link #uri}. + * @param postBody {@link #httpBody} The body of the HTTP request, which is also used to infer the + * {@link #httpMethod}. + * @param absoluteStreamPosition {@link #absoluteStreamPosition}. + * @param position {@link #position}. + * @param length {@link #length}. + * @param key {@link #key}. + * @param flags {@link #flags}. + */ + public DataSpec( + Uri uri, + @Nullable byte[] postBody, + long absoluteStreamPosition, + long position, + long length, + @Nullable String key, + @Flags int flags) { + this( + uri, + /* httpMethod= */ inferHttpMethod(postBody), + /* httpBody= */ postBody, + absoluteStreamPosition, + position, + length, + key, + flags); + } + + /** + * Construct a data spec where {@link #position} may differ from {@link #absoluteStreamPosition}. + * + * @param uri {@link #uri}. + * @param httpMethod {@link #httpMethod}. + * @param httpBody {@link #httpBody}. + * @param absoluteStreamPosition {@link #absoluteStreamPosition}. + * @param position {@link #position}. + * @param length {@link #length}. + * @param key {@link #key}. + * @param flags {@link #flags}. + */ + public DataSpec( + Uri uri, + @HttpMethod int httpMethod, + @Nullable byte[] httpBody, + long absoluteStreamPosition, + long position, + long length, + @Nullable String key, + @Flags int flags) { + this( + uri, + httpMethod, + httpBody, + absoluteStreamPosition, + position, + length, + key, + flags, + /* httpRequestHeaders= */ Collections.emptyMap()); + } + + /** + * Construct a data spec with request parameters to be used as HTTP headers inside HTTP requests. + * + * @param uri {@link #uri}. + * @param httpMethod {@link #httpMethod}. + * @param httpBody {@link #httpBody}. + * @param absoluteStreamPosition {@link #absoluteStreamPosition}. + * @param position {@link #position}. + * @param length {@link #length}. + * @param key {@link #key}. + * @param flags {@link #flags}. + * @param httpRequestHeaders {@link #httpRequestHeaders}. + */ + public DataSpec( + Uri uri, + @HttpMethod int httpMethod, + @Nullable byte[] httpBody, + long absoluteStreamPosition, + long position, + long length, + @Nullable String key, + @Flags int flags, + Map httpRequestHeaders) { + Assertions.checkArgument(absoluteStreamPosition >= 0); + Assertions.checkArgument(position >= 0); + Assertions.checkArgument(length > 0 || length == C.LENGTH_UNSET); + this.uri = uri; + this.httpMethod = httpMethod; + this.httpBody = (httpBody != null && httpBody.length != 0) ? httpBody : null; + this.absoluteStreamPosition = absoluteStreamPosition; + this.position = position; + this.length = length; + this.key = key; + this.flags = flags; + this.httpRequestHeaders = Collections.unmodifiableMap(new HashMap<>(httpRequestHeaders)); + } + + /** + * Returns whether the given flag is set. + * + * @param flag Flag to be checked if it is set. + */ + public boolean isFlagSet(@Flags int flag) { + return (this.flags & flag) == flag; + } + + @Override + public String toString() { + return "DataSpec[" + + getHttpMethodString() + + " " + + uri + + ", " + + Arrays.toString(httpBody) + + ", " + + absoluteStreamPosition + + ", " + + position + + ", " + + length + + ", " + + key + + ", " + + flags + + "]"; + } + + /** + * Returns an uppercase HTTP method name (e.g., "GET", "POST", "HEAD") corresponding to the {@link + * #httpMethod}. + */ + public final String getHttpMethodString() { + return getStringForHttpMethod(httpMethod); + } + + /** + * Returns an uppercase HTTP method name (e.g., "GET", "POST", "HEAD") corresponding to the {@code + * httpMethod}. + */ + public static String getStringForHttpMethod(@HttpMethod int httpMethod) { + switch (httpMethod) { + case HTTP_METHOD_GET: + return "GET"; + case HTTP_METHOD_POST: + return "POST"; + case HTTP_METHOD_HEAD: + return "HEAD"; + default: + throw new AssertionError(httpMethod); + } + } + + /** + * Returns a data spec that represents a subrange of the data defined by this DataSpec. The + * subrange includes data from the offset up to the end of this DataSpec. + * + * @param offset The offset of the subrange. + * @return A data spec that represents a subrange of the data defined by this DataSpec. + */ + public DataSpec subrange(long offset) { + return subrange(offset, length == C.LENGTH_UNSET ? C.LENGTH_UNSET : length - offset); + } + + /** + * Returns a data spec that represents a subrange of the data defined by this DataSpec. + * + * @param offset The offset of the subrange. + * @param length The length of the subrange. + * @return A data spec that represents a subrange of the data defined by this DataSpec. + */ + public DataSpec subrange(long offset, long length) { + if (offset == 0 && this.length == length) { + return this; + } else { + return new DataSpec( + uri, + httpMethod, + httpBody, + absoluteStreamPosition + offset, + position + offset, + length, + key, + flags, + httpRequestHeaders); + } + } + + /** + * Returns a copy of this data spec with the specified Uri. + * + * @param uri The new source {@link Uri}. + * @return The copied data spec with the specified Uri. + */ + public DataSpec withUri(Uri uri) { + return new DataSpec( + uri, + httpMethod, + httpBody, + absoluteStreamPosition, + position, + length, + key, + flags, + httpRequestHeaders); + } + + /** + * Returns a copy of this data spec with the specified request headers. + * + * @param requestHeaders The HTTP request headers. + * @return The copied data spec with the specified request headers. + */ + public DataSpec withRequestHeaders(Map requestHeaders) { + return new DataSpec( + uri, + httpMethod, + httpBody, + absoluteStreamPosition, + position, + length, + key, + flags, + requestHeaders); + } + + /** + * Returns a copy this data spec with additional request headers. + * + *

Note: Values in {@code requestHeaders} will overwrite values with the same header key that + * were previously set in this instance's {@code #httpRequestHeaders}. + * + * @param requestHeaders The additional HTTP request headers. + * @return The copied data with the additional HTTP request headers. + */ + public DataSpec withAdditionalHeaders(Map requestHeaders) { + Map totalHeaders = new HashMap<>(this.httpRequestHeaders); + totalHeaders.putAll(requestHeaders); + + return new DataSpec( + uri, + httpMethod, + httpBody, + absoluteStreamPosition, + position, + length, + key, + flags, + totalHeaders); + } + + @HttpMethod + private static int inferHttpMethod(@Nullable byte[] postBody) { + return postBody != null ? HTTP_METHOD_POST : HTTP_METHOD_GET; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultAllocator.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultAllocator.java new file mode 100644 index 0000000000..b12efcbe4e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultAllocator.java @@ -0,0 +1,179 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** + * Default implementation of {@link Allocator}. + */ +public final class DefaultAllocator implements Allocator { + + private static final int AVAILABLE_EXTRA_CAPACITY = 100; + + private final boolean trimOnReset; + private final int individualAllocationSize; + private final byte[] initialAllocationBlock; + private final Allocation[] singleAllocationReleaseHolder; + + private int targetBufferSize; + private int allocatedCount; + private int availableCount; + private Allocation[] availableAllocations; + + /** + * Constructs an instance without creating any {@link Allocation}s up front. + * + * @param trimOnReset Whether memory is freed when the allocator is reset. Should be true unless + * the allocator will be re-used by multiple player instances. + * @param individualAllocationSize The length of each individual {@link Allocation}. + */ + public DefaultAllocator(boolean trimOnReset, int individualAllocationSize) { + this(trimOnReset, individualAllocationSize, 0); + } + + /** + * Constructs an instance with some {@link Allocation}s created up front. + *

+ * Note: {@link Allocation}s created up front will never be discarded by {@link #trim()}. + * + * @param trimOnReset Whether memory is freed when the allocator is reset. Should be true unless + * the allocator will be re-used by multiple player instances. + * @param individualAllocationSize The length of each individual {@link Allocation}. + * @param initialAllocationCount The number of allocations to create up front. + */ + public DefaultAllocator(boolean trimOnReset, int individualAllocationSize, + int initialAllocationCount) { + Assertions.checkArgument(individualAllocationSize > 0); + Assertions.checkArgument(initialAllocationCount >= 0); + this.trimOnReset = trimOnReset; + this.individualAllocationSize = individualAllocationSize; + this.availableCount = initialAllocationCount; + this.availableAllocations = new Allocation[initialAllocationCount + AVAILABLE_EXTRA_CAPACITY]; + if (initialAllocationCount > 0) { + initialAllocationBlock = new byte[initialAllocationCount * individualAllocationSize]; + for (int i = 0; i < initialAllocationCount; i++) { + int allocationOffset = i * individualAllocationSize; + availableAllocations[i] = new Allocation(initialAllocationBlock, allocationOffset); + } + } else { + initialAllocationBlock = null; + } + singleAllocationReleaseHolder = new Allocation[1]; + } + + public synchronized void reset() { + if (trimOnReset) { + setTargetBufferSize(0); + } + } + + public synchronized void setTargetBufferSize(int targetBufferSize) { + boolean targetBufferSizeReduced = targetBufferSize < this.targetBufferSize; + this.targetBufferSize = targetBufferSize; + if (targetBufferSizeReduced) { + trim(); + } + } + + @Override + public synchronized Allocation allocate() { + allocatedCount++; + Allocation allocation; + if (availableCount > 0) { + allocation = availableAllocations[--availableCount]; + availableAllocations[availableCount] = null; + } else { + allocation = new Allocation(new byte[individualAllocationSize], 0); + } + return allocation; + } + + @Override + public synchronized void release(Allocation allocation) { + singleAllocationReleaseHolder[0] = allocation; + release(singleAllocationReleaseHolder); + } + + @Override + public synchronized void release(Allocation[] allocations) { + if (availableCount + allocations.length >= availableAllocations.length) { + availableAllocations = Arrays.copyOf(availableAllocations, + Math.max(availableAllocations.length * 2, availableCount + allocations.length)); + } + for (Allocation allocation : allocations) { + availableAllocations[availableCount++] = allocation; + } + allocatedCount -= allocations.length; + // Wake up threads waiting for the allocated size to drop. + notifyAll(); + } + + @Override + public synchronized void trim() { + int targetAllocationCount = Util.ceilDivide(targetBufferSize, individualAllocationSize); + int targetAvailableCount = Math.max(0, targetAllocationCount - allocatedCount); + if (targetAvailableCount >= availableCount) { + // We're already at or below the target. + return; + } + + if (initialAllocationBlock != null) { + // Some allocations are backed by an initial block. We need to make sure that we hold onto all + // such allocations. Re-order the available allocations so that the ones backed by the initial + // block come first. + int lowIndex = 0; + int highIndex = availableCount - 1; + while (lowIndex <= highIndex) { + Allocation lowAllocation = availableAllocations[lowIndex]; + if (lowAllocation.data == initialAllocationBlock) { + lowIndex++; + } else { + Allocation highAllocation = availableAllocations[highIndex]; + if (highAllocation.data != initialAllocationBlock) { + highIndex--; + } else { + availableAllocations[lowIndex++] = highAllocation; + availableAllocations[highIndex--] = lowAllocation; + } + } + } + // lowIndex is the index of the first allocation not backed by an initial block. + targetAvailableCount = Math.max(targetAvailableCount, lowIndex); + if (targetAvailableCount >= availableCount) { + // We're already at or below the target. + return; + } + } + + // Discard allocations beyond the target. + Arrays.fill(availableAllocations, targetAvailableCount, availableCount, null); + availableCount = targetAvailableCount; + } + + @Override + public synchronized int getTotalBytesAllocated() { + return allocatedCount * individualAllocationSize; + } + + @Override + public int getIndividualAllocationLength() { + return individualAllocationSize; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultBandwidthMeter.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultBandwidthMeter.java new file mode 100644 index 0000000000..63ca7c7eac --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultBandwidthMeter.java @@ -0,0 +1,731 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.content.BroadcastReceiver; +import android.content.Context; +import android.content.Intent; +import android.content.IntentFilter; +import android.net.ConnectivityManager; +import android.os.Handler; +import android.os.Looper; +import android.util.SparseArray; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Clock; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.EventDispatcher; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.SlidingPercentile; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.lang.ref.WeakReference; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * Estimates bandwidth by listening to data transfers. + * + *

The bandwidth estimate is calculated using a {@link SlidingPercentile} and is updated each + * time a transfer ends. The initial estimate is based on the current operator's network country + * code or the locale of the user, as well as the network connection type. This can be configured in + * the {@link Builder}. + */ +public final class DefaultBandwidthMeter implements BandwidthMeter, TransferListener { + + /** + * Country groups used to determine the default initial bitrate estimate. The group assignment for + * each country is an array of group indices for [Wifi, 2G, 3G, 4G]. + */ + public static final Map DEFAULT_INITIAL_BITRATE_COUNTRY_GROUPS = + createInitialBitrateCountryGroupAssignment(); + + /** Default initial Wifi bitrate estimate in bits per second. */ + public static final long[] DEFAULT_INITIAL_BITRATE_ESTIMATES_WIFI = + new long[] {5_700_000, 3_500_000, 2_000_000, 1_100_000, 470_000}; + + /** Default initial 2G bitrate estimates in bits per second. */ + public static final long[] DEFAULT_INITIAL_BITRATE_ESTIMATES_2G = + new long[] {200_000, 148_000, 132_000, 115_000, 95_000}; + + /** Default initial 3G bitrate estimates in bits per second. */ + public static final long[] DEFAULT_INITIAL_BITRATE_ESTIMATES_3G = + new long[] {2_200_000, 1_300_000, 970_000, 810_000, 490_000}; + + /** Default initial 4G bitrate estimates in bits per second. */ + public static final long[] DEFAULT_INITIAL_BITRATE_ESTIMATES_4G = + new long[] {5_300_000, 3_200_000, 2_000_000, 1_400_000, 690_000}; + + /** + * Default initial bitrate estimate used when the device is offline or the network type cannot be + * determined, in bits per second. + */ + public static final long DEFAULT_INITIAL_BITRATE_ESTIMATE = 1_000_000; + + /** Default maximum weight for the sliding window. */ + public static final int DEFAULT_SLIDING_WINDOW_MAX_WEIGHT = 2000; + + @Nullable private static DefaultBandwidthMeter singletonInstance; + + /** Builder for a bandwidth meter. */ + public static final class Builder { + + @Nullable private final Context context; + + private SparseArray initialBitrateEstimates; + private int slidingWindowMaxWeight; + private Clock clock; + private boolean resetOnNetworkTypeChange; + + /** + * Creates a builder with default parameters and without listener. + * + * @param context A context. + */ + public Builder(Context context) { + // Handling of null is for backward compatibility only. + this.context = context == null ? null : context.getApplicationContext(); + initialBitrateEstimates = getInitialBitrateEstimatesForCountry(Util.getCountryCode(context)); + slidingWindowMaxWeight = DEFAULT_SLIDING_WINDOW_MAX_WEIGHT; + clock = Clock.DEFAULT; + resetOnNetworkTypeChange = true; + } + + /** + * Sets the maximum weight for the sliding window. + * + * @param slidingWindowMaxWeight The maximum weight for the sliding window. + * @return This builder. + */ + public Builder setSlidingWindowMaxWeight(int slidingWindowMaxWeight) { + this.slidingWindowMaxWeight = slidingWindowMaxWeight; + return this; + } + + /** + * Sets the initial bitrate estimate in bits per second that should be assumed when a bandwidth + * estimate is unavailable. + * + * @param initialBitrateEstimate The initial bitrate estimate in bits per second. + * @return This builder. + */ + public Builder setInitialBitrateEstimate(long initialBitrateEstimate) { + for (int i = 0; i < initialBitrateEstimates.size(); i++) { + initialBitrateEstimates.setValueAt(i, initialBitrateEstimate); + } + return this; + } + + /** + * Sets the initial bitrate estimate in bits per second that should be assumed when a bandwidth + * estimate is unavailable and the current network connection is of the specified type. + * + * @param networkType The {@link C.NetworkType} this initial estimate is for. + * @param initialBitrateEstimate The initial bitrate estimate in bits per second. + * @return This builder. + */ + public Builder setInitialBitrateEstimate( + @C.NetworkType int networkType, long initialBitrateEstimate) { + initialBitrateEstimates.put(networkType, initialBitrateEstimate); + return this; + } + + /** + * Sets the initial bitrate estimates to the default values of the specified country. The + * initial estimates are used when a bandwidth estimate is unavailable. + * + * @param countryCode The ISO 3166-1 alpha-2 country code of the country whose default bitrate + * estimates should be used. + * @return This builder. + */ + public Builder setInitialBitrateEstimate(String countryCode) { + initialBitrateEstimates = + getInitialBitrateEstimatesForCountry(Util.toUpperInvariant(countryCode)); + return this; + } + + /** + * Sets the clock used to estimate bandwidth from data transfers. Should only be set for testing + * purposes. + * + * @param clock The clock used to estimate bandwidth from data transfers. + * @return This builder. + */ + public Builder setClock(Clock clock) { + this.clock = clock; + return this; + } + + /** + * Sets whether to reset if the network type changes. The default value is {@code true}. + * + * @param resetOnNetworkTypeChange Whether to reset if the network type changes. + * @return This builder. + */ + public Builder setResetOnNetworkTypeChange(boolean resetOnNetworkTypeChange) { + this.resetOnNetworkTypeChange = resetOnNetworkTypeChange; + return this; + } + + /** + * Builds the bandwidth meter. + * + * @return A bandwidth meter with the configured properties. + */ + public DefaultBandwidthMeter build() { + return new DefaultBandwidthMeter( + context, + initialBitrateEstimates, + slidingWindowMaxWeight, + clock, + resetOnNetworkTypeChange); + } + + private static SparseArray getInitialBitrateEstimatesForCountry(String countryCode) { + int[] groupIndices = getCountryGroupIndices(countryCode); + SparseArray result = new SparseArray<>(/* initialCapacity= */ 6); + result.append(C.NETWORK_TYPE_UNKNOWN, DEFAULT_INITIAL_BITRATE_ESTIMATE); + result.append(C.NETWORK_TYPE_WIFI, DEFAULT_INITIAL_BITRATE_ESTIMATES_WIFI[groupIndices[0]]); + result.append(C.NETWORK_TYPE_2G, DEFAULT_INITIAL_BITRATE_ESTIMATES_2G[groupIndices[1]]); + result.append(C.NETWORK_TYPE_3G, DEFAULT_INITIAL_BITRATE_ESTIMATES_3G[groupIndices[2]]); + result.append(C.NETWORK_TYPE_4G, DEFAULT_INITIAL_BITRATE_ESTIMATES_4G[groupIndices[3]]); + // Assume default Wifi bitrate for Ethernet and 5G to prevent using the slower fallback. + result.append( + C.NETWORK_TYPE_ETHERNET, DEFAULT_INITIAL_BITRATE_ESTIMATES_WIFI[groupIndices[0]]); + result.append(C.NETWORK_TYPE_5G, DEFAULT_INITIAL_BITRATE_ESTIMATES_WIFI[groupIndices[0]]); + return result; + } + + private static int[] getCountryGroupIndices(String countryCode) { + int[] groupIndices = DEFAULT_INITIAL_BITRATE_COUNTRY_GROUPS.get(countryCode); + // Assume median group if not found. + return groupIndices == null ? new int[] {2, 2, 2, 2} : groupIndices; + } + } + + /** + * Returns a singleton instance of a {@link DefaultBandwidthMeter} with default configuration. + * + * @param context A {@link Context}. + * @return The singleton instance. + */ + public static synchronized DefaultBandwidthMeter getSingletonInstance(Context context) { + if (singletonInstance == null) { + singletonInstance = new DefaultBandwidthMeter.Builder(context).build(); + } + return singletonInstance; + } + + private static final int ELAPSED_MILLIS_FOR_ESTIMATE = 2000; + private static final int BYTES_TRANSFERRED_FOR_ESTIMATE = 512 * 1024; + + @Nullable private final Context context; + private final SparseArray initialBitrateEstimates; + private final EventDispatcher eventDispatcher; + private final SlidingPercentile slidingPercentile; + private final Clock clock; + + private int streamCount; + private long sampleStartTimeMs; + private long sampleBytesTransferred; + + @C.NetworkType private int networkType; + private long totalElapsedTimeMs; + private long totalBytesTransferred; + private long bitrateEstimate; + private long lastReportedBitrateEstimate; + + private boolean networkTypeOverrideSet; + @C.NetworkType private int networkTypeOverride; + + /** @deprecated Use {@link Builder} instead. */ + @Deprecated + public DefaultBandwidthMeter() { + this( + /* context= */ null, + /* initialBitrateEstimates= */ new SparseArray<>(), + DEFAULT_SLIDING_WINDOW_MAX_WEIGHT, + Clock.DEFAULT, + /* resetOnNetworkTypeChange= */ false); + } + + private DefaultBandwidthMeter( + @Nullable Context context, + SparseArray initialBitrateEstimates, + int maxWeight, + Clock clock, + boolean resetOnNetworkTypeChange) { + this.context = context == null ? null : context.getApplicationContext(); + this.initialBitrateEstimates = initialBitrateEstimates; + this.eventDispatcher = new EventDispatcher<>(); + this.slidingPercentile = new SlidingPercentile(maxWeight); + this.clock = clock; + // Set the initial network type and bitrate estimate + networkType = context == null ? C.NETWORK_TYPE_UNKNOWN : Util.getNetworkType(context); + bitrateEstimate = getInitialBitrateEstimateForNetworkType(networkType); + // Register to receive connectivity actions if possible. + if (context != null && resetOnNetworkTypeChange) { + ConnectivityActionReceiver connectivityActionReceiver = + ConnectivityActionReceiver.getInstance(context); + connectivityActionReceiver.register(/* bandwidthMeter= */ this); + } + } + + /** + * Overrides the network type. Handled in the same way as if the meter had detected a change from + * the current network type to the specified network type internally. + * + *

Applications should not normally call this method. It is intended for testing purposes. + * + * @param networkType The overriding network type. + */ + public synchronized void setNetworkTypeOverride(@C.NetworkType int networkType) { + networkTypeOverride = networkType; + networkTypeOverrideSet = true; + onConnectivityAction(); + } + + @Override + public synchronized long getBitrateEstimate() { + return bitrateEstimate; + } + + @Override + @Nullable + public TransferListener getTransferListener() { + return this; + } + + @Override + public void addEventListener(Handler eventHandler, EventListener eventListener) { + eventDispatcher.addListener(eventHandler, eventListener); + } + + @Override + public void removeEventListener(EventListener eventListener) { + eventDispatcher.removeListener(eventListener); + } + + @Override + public void onTransferInitializing(DataSource source, DataSpec dataSpec, boolean isNetwork) { + // Do nothing. + } + + @Override + public synchronized void onTransferStart( + DataSource source, DataSpec dataSpec, boolean isNetwork) { + if (!isNetwork) { + return; + } + if (streamCount == 0) { + sampleStartTimeMs = clock.elapsedRealtime(); + } + streamCount++; + } + + @Override + public synchronized void onBytesTransferred( + DataSource source, DataSpec dataSpec, boolean isNetwork, int bytes) { + if (!isNetwork) { + return; + } + sampleBytesTransferred += bytes; + } + + @Override + public synchronized void onTransferEnd(DataSource source, DataSpec dataSpec, boolean isNetwork) { + if (!isNetwork) { + return; + } + Assertions.checkState(streamCount > 0); + long nowMs = clock.elapsedRealtime(); + int sampleElapsedTimeMs = (int) (nowMs - sampleStartTimeMs); + totalElapsedTimeMs += sampleElapsedTimeMs; + totalBytesTransferred += sampleBytesTransferred; + if (sampleElapsedTimeMs > 0) { + float bitsPerSecond = (sampleBytesTransferred * 8000f) / sampleElapsedTimeMs; + slidingPercentile.addSample((int) Math.sqrt(sampleBytesTransferred), bitsPerSecond); + if (totalElapsedTimeMs >= ELAPSED_MILLIS_FOR_ESTIMATE + || totalBytesTransferred >= BYTES_TRANSFERRED_FOR_ESTIMATE) { + bitrateEstimate = (long) slidingPercentile.getPercentile(0.5f); + } + maybeNotifyBandwidthSample(sampleElapsedTimeMs, sampleBytesTransferred, bitrateEstimate); + sampleStartTimeMs = nowMs; + sampleBytesTransferred = 0; + } // Else any sample bytes transferred will be carried forward into the next sample. + streamCount--; + } + + private synchronized void onConnectivityAction() { + int networkType = + networkTypeOverrideSet + ? networkTypeOverride + : (context == null ? C.NETWORK_TYPE_UNKNOWN : Util.getNetworkType(context)); + if (this.networkType == networkType) { + return; + } + + this.networkType = networkType; + if (networkType == C.NETWORK_TYPE_OFFLINE + || networkType == C.NETWORK_TYPE_UNKNOWN + || networkType == C.NETWORK_TYPE_OTHER) { + // It's better not to reset the bandwidth meter for these network types. + return; + } + + // Reset the bitrate estimate and report it, along with any bytes transferred. + this.bitrateEstimate = getInitialBitrateEstimateForNetworkType(networkType); + long nowMs = clock.elapsedRealtime(); + int sampleElapsedTimeMs = streamCount > 0 ? (int) (nowMs - sampleStartTimeMs) : 0; + maybeNotifyBandwidthSample(sampleElapsedTimeMs, sampleBytesTransferred, bitrateEstimate); + + // Reset the remainder of the state. + sampleStartTimeMs = nowMs; + sampleBytesTransferred = 0; + totalBytesTransferred = 0; + totalElapsedTimeMs = 0; + slidingPercentile.reset(); + } + + private void maybeNotifyBandwidthSample( + int elapsedMs, long bytesTransferred, long bitrateEstimate) { + if (elapsedMs == 0 && bytesTransferred == 0 && bitrateEstimate == lastReportedBitrateEstimate) { + return; + } + lastReportedBitrateEstimate = bitrateEstimate; + eventDispatcher.dispatch( + listener -> listener.onBandwidthSample(elapsedMs, bytesTransferred, bitrateEstimate)); + } + + private long getInitialBitrateEstimateForNetworkType(@C.NetworkType int networkType) { + Long initialBitrateEstimate = initialBitrateEstimates.get(networkType); + if (initialBitrateEstimate == null) { + initialBitrateEstimate = initialBitrateEstimates.get(C.NETWORK_TYPE_UNKNOWN); + } + if (initialBitrateEstimate == null) { + initialBitrateEstimate = DEFAULT_INITIAL_BITRATE_ESTIMATE; + } + return initialBitrateEstimate; + } + + /* + * Note: This class only holds a weak reference to DefaultBandwidthMeter instances. It should not + * be made non-static, since doing so adds a strong reference (i.e. DefaultBandwidthMeter.this). + */ + private static class ConnectivityActionReceiver extends BroadcastReceiver { + + private static @MonotonicNonNull ConnectivityActionReceiver staticInstance; + + private final Handler mainHandler; + private final ArrayList> bandwidthMeters; + + public static synchronized ConnectivityActionReceiver getInstance(Context context) { + if (staticInstance == null) { + staticInstance = new ConnectivityActionReceiver(); + IntentFilter filter = new IntentFilter(); + filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION); + context.registerReceiver(staticInstance, filter); + } + return staticInstance; + } + + private ConnectivityActionReceiver() { + mainHandler = new Handler(Looper.getMainLooper()); + bandwidthMeters = new ArrayList<>(); + } + + public synchronized void register(DefaultBandwidthMeter bandwidthMeter) { + removeClearedReferences(); + bandwidthMeters.add(new WeakReference<>(bandwidthMeter)); + // Simulate an initial update on the main thread (like the sticky broadcast we'd receive if + // we were to register a separate broadcast receiver for each bandwidth meter). + mainHandler.post(() -> updateBandwidthMeter(bandwidthMeter)); + } + + @Override + public synchronized void onReceive(Context context, Intent intent) { + if (isInitialStickyBroadcast()) { + return; + } + removeClearedReferences(); + for (int i = 0; i < bandwidthMeters.size(); i++) { + WeakReference bandwidthMeterReference = bandwidthMeters.get(i); + DefaultBandwidthMeter bandwidthMeter = bandwidthMeterReference.get(); + if (bandwidthMeter != null) { + updateBandwidthMeter(bandwidthMeter); + } + } + } + + private void updateBandwidthMeter(DefaultBandwidthMeter bandwidthMeter) { + bandwidthMeter.onConnectivityAction(); + } + + private void removeClearedReferences() { + for (int i = bandwidthMeters.size() - 1; i >= 0; i--) { + WeakReference bandwidthMeterReference = bandwidthMeters.get(i); + DefaultBandwidthMeter bandwidthMeter = bandwidthMeterReference.get(); + if (bandwidthMeter == null) { + bandwidthMeters.remove(i); + } + } + } + } + + private static Map createInitialBitrateCountryGroupAssignment() { + HashMap countryGroupAssignment = new HashMap<>(); + countryGroupAssignment.put("AD", new int[] {1, 1, 0, 0}); + countryGroupAssignment.put("AE", new int[] {1, 4, 4, 4}); + countryGroupAssignment.put("AF", new int[] {4, 4, 3, 3}); + countryGroupAssignment.put("AG", new int[] {3, 1, 0, 1}); + countryGroupAssignment.put("AI", new int[] {1, 0, 0, 3}); + countryGroupAssignment.put("AL", new int[] {1, 2, 0, 1}); + countryGroupAssignment.put("AM", new int[] {2, 2, 2, 2}); + countryGroupAssignment.put("AO", new int[] {3, 4, 2, 0}); + countryGroupAssignment.put("AR", new int[] {2, 3, 2, 2}); + countryGroupAssignment.put("AS", new int[] {3, 0, 4, 2}); + countryGroupAssignment.put("AT", new int[] {0, 3, 0, 0}); + countryGroupAssignment.put("AU", new int[] {0, 3, 0, 1}); + countryGroupAssignment.put("AW", new int[] {1, 1, 0, 3}); + countryGroupAssignment.put("AX", new int[] {0, 3, 0, 2}); + countryGroupAssignment.put("AZ", new int[] {3, 3, 3, 3}); + countryGroupAssignment.put("BA", new int[] {1, 1, 0, 1}); + countryGroupAssignment.put("BB", new int[] {0, 2, 0, 0}); + countryGroupAssignment.put("BD", new int[] {2, 1, 3, 3}); + countryGroupAssignment.put("BE", new int[] {0, 0, 0, 1}); + countryGroupAssignment.put("BF", new int[] {4, 4, 4, 1}); + countryGroupAssignment.put("BG", new int[] {0, 1, 0, 0}); + countryGroupAssignment.put("BH", new int[] {2, 1, 3, 4}); + countryGroupAssignment.put("BI", new int[] {4, 4, 4, 4}); + countryGroupAssignment.put("BJ", new int[] {4, 4, 4, 4}); + countryGroupAssignment.put("BL", new int[] {1, 0, 2, 2}); + countryGroupAssignment.put("BM", new int[] {1, 2, 0, 0}); + countryGroupAssignment.put("BN", new int[] {4, 1, 3, 2}); + countryGroupAssignment.put("BO", new int[] {1, 2, 3, 2}); + countryGroupAssignment.put("BQ", new int[] {1, 1, 2, 4}); + countryGroupAssignment.put("BR", new int[] {2, 3, 3, 2}); + countryGroupAssignment.put("BS", new int[] {2, 1, 1, 4}); + countryGroupAssignment.put("BT", new int[] {3, 0, 3, 1}); + countryGroupAssignment.put("BW", new int[] {4, 4, 1, 2}); + countryGroupAssignment.put("BY", new int[] {0, 1, 1, 2}); + countryGroupAssignment.put("BZ", new int[] {2, 2, 2, 1}); + countryGroupAssignment.put("CA", new int[] {0, 3, 1, 3}); + countryGroupAssignment.put("CD", new int[] {4, 4, 2, 2}); + countryGroupAssignment.put("CF", new int[] {4, 4, 3, 0}); + countryGroupAssignment.put("CG", new int[] {3, 4, 2, 4}); + countryGroupAssignment.put("CH", new int[] {0, 0, 1, 0}); + countryGroupAssignment.put("CI", new int[] {3, 4, 3, 3}); + countryGroupAssignment.put("CK", new int[] {2, 4, 1, 0}); + countryGroupAssignment.put("CL", new int[] {1, 2, 2, 3}); + countryGroupAssignment.put("CM", new int[] {3, 4, 3, 1}); + countryGroupAssignment.put("CN", new int[] {2, 0, 2, 3}); + countryGroupAssignment.put("CO", new int[] {2, 3, 2, 2}); + countryGroupAssignment.put("CR", new int[] {2, 3, 4, 4}); + countryGroupAssignment.put("CU", new int[] {4, 4, 3, 1}); + countryGroupAssignment.put("CV", new int[] {2, 3, 1, 2}); + countryGroupAssignment.put("CW", new int[] {1, 1, 0, 0}); + countryGroupAssignment.put("CY", new int[] {1, 1, 0, 0}); + countryGroupAssignment.put("CZ", new int[] {0, 1, 0, 0}); + countryGroupAssignment.put("DE", new int[] {0, 1, 1, 3}); + countryGroupAssignment.put("DJ", new int[] {4, 3, 4, 1}); + countryGroupAssignment.put("DK", new int[] {0, 0, 1, 1}); + countryGroupAssignment.put("DM", new int[] {1, 0, 1, 3}); + countryGroupAssignment.put("DO", new int[] {3, 3, 4, 4}); + countryGroupAssignment.put("DZ", new int[] {3, 3, 4, 4}); + countryGroupAssignment.put("EC", new int[] {2, 3, 4, 3}); + countryGroupAssignment.put("EE", new int[] {0, 1, 0, 0}); + countryGroupAssignment.put("EG", new int[] {3, 4, 2, 2}); + countryGroupAssignment.put("EH", new int[] {2, 0, 3, 3}); + countryGroupAssignment.put("ER", new int[] {4, 2, 2, 0}); + countryGroupAssignment.put("ES", new int[] {0, 1, 1, 1}); + countryGroupAssignment.put("ET", new int[] {4, 4, 4, 0}); + countryGroupAssignment.put("FI", new int[] {0, 0, 1, 0}); + countryGroupAssignment.put("FJ", new int[] {3, 0, 3, 3}); + countryGroupAssignment.put("FK", new int[] {3, 4, 2, 2}); + countryGroupAssignment.put("FM", new int[] {4, 0, 4, 0}); + countryGroupAssignment.put("FO", new int[] {0, 0, 0, 0}); + countryGroupAssignment.put("FR", new int[] {1, 0, 3, 1}); + countryGroupAssignment.put("GA", new int[] {3, 3, 2, 2}); + countryGroupAssignment.put("GB", new int[] {0, 1, 3, 3}); + countryGroupAssignment.put("GD", new int[] {2, 0, 4, 4}); + countryGroupAssignment.put("GE", new int[] {1, 1, 1, 4}); + countryGroupAssignment.put("GF", new int[] {2, 3, 4, 4}); + countryGroupAssignment.put("GG", new int[] {0, 1, 0, 0}); + countryGroupAssignment.put("GH", new int[] {3, 3, 2, 2}); + countryGroupAssignment.put("GI", new int[] {0, 0, 0, 1}); + countryGroupAssignment.put("GL", new int[] {2, 2, 0, 2}); + countryGroupAssignment.put("GM", new int[] {4, 4, 3, 4}); + countryGroupAssignment.put("GN", new int[] {3, 4, 4, 2}); + countryGroupAssignment.put("GP", new int[] {2, 1, 1, 4}); + countryGroupAssignment.put("GQ", new int[] {4, 4, 3, 0}); + countryGroupAssignment.put("GR", new int[] {1, 1, 0, 2}); + countryGroupAssignment.put("GT", new int[] {3, 3, 3, 3}); + countryGroupAssignment.put("GU", new int[] {1, 2, 4, 4}); + countryGroupAssignment.put("GW", new int[] {4, 4, 4, 1}); + countryGroupAssignment.put("GY", new int[] {3, 2, 1, 1}); + countryGroupAssignment.put("HK", new int[] {0, 2, 3, 4}); + countryGroupAssignment.put("HN", new int[] {3, 2, 3, 2}); + countryGroupAssignment.put("HR", new int[] {1, 1, 0, 1}); + countryGroupAssignment.put("HT", new int[] {4, 4, 4, 4}); + countryGroupAssignment.put("HU", new int[] {0, 1, 0, 0}); + countryGroupAssignment.put("ID", new int[] {3, 2, 3, 4}); + countryGroupAssignment.put("IE", new int[] {1, 0, 1, 1}); + countryGroupAssignment.put("IL", new int[] {0, 0, 2, 3}); + countryGroupAssignment.put("IM", new int[] {0, 0, 0, 1}); + countryGroupAssignment.put("IN", new int[] {2, 2, 4, 4}); + countryGroupAssignment.put("IO", new int[] {4, 2, 2, 2}); + countryGroupAssignment.put("IQ", new int[] {3, 3, 4, 2}); + countryGroupAssignment.put("IR", new int[] {3, 0, 2, 2}); + countryGroupAssignment.put("IS", new int[] {0, 1, 0, 0}); + countryGroupAssignment.put("IT", new int[] {1, 0, 1, 2}); + countryGroupAssignment.put("JE", new int[] {1, 0, 0, 1}); + countryGroupAssignment.put("JM", new int[] {2, 3, 3, 1}); + countryGroupAssignment.put("JO", new int[] {1, 2, 1, 2}); + countryGroupAssignment.put("JP", new int[] {0, 2, 1, 1}); + countryGroupAssignment.put("KE", new int[] {3, 4, 4, 3}); + countryGroupAssignment.put("KG", new int[] {1, 1, 2, 2}); + countryGroupAssignment.put("KH", new int[] {1, 0, 4, 4}); + countryGroupAssignment.put("KI", new int[] {4, 4, 4, 4}); + countryGroupAssignment.put("KM", new int[] {4, 3, 2, 3}); + countryGroupAssignment.put("KN", new int[] {1, 0, 1, 3}); + countryGroupAssignment.put("KP", new int[] {4, 2, 4, 2}); + countryGroupAssignment.put("KR", new int[] {0, 1, 1, 1}); + countryGroupAssignment.put("KW", new int[] {2, 3, 1, 1}); + countryGroupAssignment.put("KY", new int[] {1, 1, 0, 1}); + countryGroupAssignment.put("KZ", new int[] {1, 2, 2, 3}); + countryGroupAssignment.put("LA", new int[] {2, 2, 1, 1}); + countryGroupAssignment.put("LB", new int[] {3, 2, 0, 0}); + countryGroupAssignment.put("LC", new int[] {1, 1, 0, 0}); + countryGroupAssignment.put("LI", new int[] {0, 0, 2, 4}); + countryGroupAssignment.put("LK", new int[] {2, 1, 2, 3}); + countryGroupAssignment.put("LR", new int[] {3, 4, 3, 1}); + countryGroupAssignment.put("LS", new int[] {3, 3, 2, 0}); + countryGroupAssignment.put("LT", new int[] {0, 0, 0, 0}); + countryGroupAssignment.put("LU", new int[] {0, 0, 0, 0}); + countryGroupAssignment.put("LV", new int[] {0, 0, 0, 0}); + countryGroupAssignment.put("LY", new int[] {4, 4, 4, 4}); + countryGroupAssignment.put("MA", new int[] {2, 1, 2, 1}); + countryGroupAssignment.put("MC", new int[] {0, 0, 0, 1}); + countryGroupAssignment.put("MD", new int[] {1, 1, 0, 0}); + countryGroupAssignment.put("ME", new int[] {1, 2, 1, 2}); + countryGroupAssignment.put("MF", new int[] {1, 1, 1, 1}); + countryGroupAssignment.put("MG", new int[] {3, 4, 2, 2}); + countryGroupAssignment.put("MH", new int[] {4, 0, 2, 4}); + countryGroupAssignment.put("MK", new int[] {1, 0, 0, 0}); + countryGroupAssignment.put("ML", new int[] {4, 4, 2, 0}); + countryGroupAssignment.put("MM", new int[] {3, 3, 1, 2}); + countryGroupAssignment.put("MN", new int[] {2, 3, 2, 3}); + countryGroupAssignment.put("MO", new int[] {0, 0, 4, 4}); + countryGroupAssignment.put("MP", new int[] {0, 2, 4, 4}); + countryGroupAssignment.put("MQ", new int[] {2, 1, 1, 4}); + countryGroupAssignment.put("MR", new int[] {4, 2, 4, 2}); + countryGroupAssignment.put("MS", new int[] {1, 2, 3, 3}); + countryGroupAssignment.put("MT", new int[] {0, 1, 0, 0}); + countryGroupAssignment.put("MU", new int[] {2, 2, 3, 4}); + countryGroupAssignment.put("MV", new int[] {4, 3, 0, 2}); + countryGroupAssignment.put("MW", new int[] {3, 2, 1, 0}); + countryGroupAssignment.put("MX", new int[] {2, 4, 4, 3}); + countryGroupAssignment.put("MY", new int[] {2, 2, 3, 3}); + countryGroupAssignment.put("MZ", new int[] {3, 3, 2, 1}); + countryGroupAssignment.put("NA", new int[] {3, 3, 2, 1}); + countryGroupAssignment.put("NC", new int[] {2, 0, 3, 3}); + countryGroupAssignment.put("NE", new int[] {4, 4, 4, 3}); + countryGroupAssignment.put("NF", new int[] {1, 2, 2, 2}); + countryGroupAssignment.put("NG", new int[] {3, 4, 3, 1}); + countryGroupAssignment.put("NI", new int[] {3, 3, 4, 4}); + countryGroupAssignment.put("NL", new int[] {0, 2, 3, 3}); + countryGroupAssignment.put("NO", new int[] {0, 1, 1, 0}); + countryGroupAssignment.put("NP", new int[] {2, 2, 2, 2}); + countryGroupAssignment.put("NR", new int[] {4, 0, 3, 1}); + countryGroupAssignment.put("NZ", new int[] {0, 0, 1, 2}); + countryGroupAssignment.put("OM", new int[] {3, 2, 1, 3}); + countryGroupAssignment.put("PA", new int[] {1, 3, 3, 4}); + countryGroupAssignment.put("PE", new int[] {2, 3, 4, 4}); + countryGroupAssignment.put("PF", new int[] {2, 2, 0, 1}); + countryGroupAssignment.put("PG", new int[] {4, 3, 3, 1}); + countryGroupAssignment.put("PH", new int[] {3, 0, 3, 4}); + countryGroupAssignment.put("PK", new int[] {3, 3, 3, 3}); + countryGroupAssignment.put("PL", new int[] {1, 0, 1, 3}); + countryGroupAssignment.put("PM", new int[] {0, 2, 2, 0}); + countryGroupAssignment.put("PR", new int[] {1, 2, 3, 3}); + countryGroupAssignment.put("PS", new int[] {3, 3, 2, 4}); + countryGroupAssignment.put("PT", new int[] {1, 1, 0, 0}); + countryGroupAssignment.put("PW", new int[] {2, 1, 2, 0}); + countryGroupAssignment.put("PY", new int[] {2, 0, 2, 3}); + countryGroupAssignment.put("QA", new int[] {2, 2, 1, 2}); + countryGroupAssignment.put("RE", new int[] {1, 0, 2, 2}); + countryGroupAssignment.put("RO", new int[] {0, 1, 1, 2}); + countryGroupAssignment.put("RS", new int[] {1, 2, 0, 0}); + countryGroupAssignment.put("RU", new int[] {0, 1, 1, 1}); + countryGroupAssignment.put("RW", new int[] {4, 4, 2, 4}); + countryGroupAssignment.put("SA", new int[] {2, 2, 2, 1}); + countryGroupAssignment.put("SB", new int[] {4, 4, 3, 0}); + countryGroupAssignment.put("SC", new int[] {4, 2, 0, 1}); + countryGroupAssignment.put("SD", new int[] {4, 4, 4, 3}); + countryGroupAssignment.put("SE", new int[] {0, 1, 0, 0}); + countryGroupAssignment.put("SG", new int[] {0, 2, 3, 3}); + countryGroupAssignment.put("SH", new int[] {4, 4, 2, 3}); + countryGroupAssignment.put("SI", new int[] {0, 0, 0, 0}); + countryGroupAssignment.put("SJ", new int[] {2, 0, 2, 4}); + countryGroupAssignment.put("SK", new int[] {0, 1, 0, 0}); + countryGroupAssignment.put("SL", new int[] {4, 3, 3, 3}); + countryGroupAssignment.put("SM", new int[] {0, 0, 2, 4}); + countryGroupAssignment.put("SN", new int[] {3, 4, 4, 2}); + countryGroupAssignment.put("SO", new int[] {3, 4, 4, 3}); + countryGroupAssignment.put("SR", new int[] {2, 2, 1, 0}); + countryGroupAssignment.put("SS", new int[] {4, 3, 4, 3}); + countryGroupAssignment.put("ST", new int[] {3, 4, 2, 2}); + countryGroupAssignment.put("SV", new int[] {2, 3, 3, 4}); + countryGroupAssignment.put("SX", new int[] {2, 4, 1, 0}); + countryGroupAssignment.put("SY", new int[] {4, 3, 2, 1}); + countryGroupAssignment.put("SZ", new int[] {4, 4, 3, 4}); + countryGroupAssignment.put("TC", new int[] {1, 2, 1, 1}); + countryGroupAssignment.put("TD", new int[] {4, 4, 4, 2}); + countryGroupAssignment.put("TG", new int[] {3, 3, 1, 0}); + countryGroupAssignment.put("TH", new int[] {1, 3, 4, 4}); + countryGroupAssignment.put("TJ", new int[] {4, 4, 4, 4}); + countryGroupAssignment.put("TL", new int[] {4, 2, 4, 4}); + countryGroupAssignment.put("TM", new int[] {4, 1, 2, 2}); + countryGroupAssignment.put("TN", new int[] {2, 2, 1, 2}); + countryGroupAssignment.put("TO", new int[] {3, 3, 3, 1}); + countryGroupAssignment.put("TR", new int[] {2, 2, 1, 2}); + countryGroupAssignment.put("TT", new int[] {1, 3, 1, 2}); + countryGroupAssignment.put("TV", new int[] {4, 2, 2, 4}); + countryGroupAssignment.put("TW", new int[] {0, 0, 0, 0}); + countryGroupAssignment.put("TZ", new int[] {3, 3, 4, 3}); + countryGroupAssignment.put("UA", new int[] {0, 2, 1, 2}); + countryGroupAssignment.put("UG", new int[] {4, 3, 3, 2}); + countryGroupAssignment.put("US", new int[] {1, 1, 3, 3}); + countryGroupAssignment.put("UY", new int[] {2, 2, 1, 1}); + countryGroupAssignment.put("UZ", new int[] {2, 2, 2, 2}); + countryGroupAssignment.put("VA", new int[] {1, 2, 4, 2}); + countryGroupAssignment.put("VC", new int[] {2, 0, 2, 4}); + countryGroupAssignment.put("VE", new int[] {4, 4, 4, 3}); + countryGroupAssignment.put("VG", new int[] {3, 0, 1, 3}); + countryGroupAssignment.put("VI", new int[] {1, 1, 4, 4}); + countryGroupAssignment.put("VN", new int[] {0, 2, 4, 4}); + countryGroupAssignment.put("VU", new int[] {4, 1, 3, 1}); + countryGroupAssignment.put("WS", new int[] {3, 3, 3, 2}); + countryGroupAssignment.put("XK", new int[] {1, 2, 1, 0}); + countryGroupAssignment.put("YE", new int[] {4, 4, 4, 3}); + countryGroupAssignment.put("YT", new int[] {2, 2, 2, 3}); + countryGroupAssignment.put("ZA", new int[] {2, 4, 2, 2}); + countryGroupAssignment.put("ZM", new int[] {3, 2, 2, 1}); + countryGroupAssignment.put("ZW", new int[] {3, 3, 2, 1}); + return Collections.unmodifiableMap(countryGroupAssignment); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultDataSource.java new file mode 100644 index 0000000000..87e1c728a0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultDataSource.java @@ -0,0 +1,289 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.content.Context; +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.Map; + +/** + * A {@link DataSource} that supports multiple URI schemes. The supported schemes are: + * + *

    + *
  • file: For fetching data from a local file (e.g. file:///path/to/media/media.mp4, or just + * /path/to/media/media.mp4 because the implementation assumes that a URI without a scheme is + * a local file URI). + *
  • asset: For fetching data from an asset in the application's apk (e.g. asset:///media.mp4). + *
  • rawresource: For fetching data from a raw resource in the application's apk (e.g. + * rawresource:///resourceId, where rawResourceId is the integer identifier of the raw + * resource). + *
  • content: For fetching data from a content URI (e.g. content://authority/path/123). + *
  • rtmp: For fetching data over RTMP. Only supported if the project using ExoPlayer has an + * explicit dependency on ExoPlayer's RTMP extension. + *
  • data: For parsing data inlined in the URI as defined in RFC 2397. + *
  • udp: For fetching data over UDP (e.g. udp://something.com/media). + *
  • http(s): For fetching data over HTTP and HTTPS (e.g. https://www.something.com/media.mp4), + * if constructed using {@link #DefaultDataSource(Context, String, boolean)}, or any other + * schemes supported by a base data source if constructed using {@link + * #DefaultDataSource(Context, DataSource)}. + *
+ */ +public final class DefaultDataSource implements DataSource { + + private static final String TAG = "DefaultDataSource"; + + private static final String SCHEME_ASSET = "asset"; + private static final String SCHEME_CONTENT = "content"; + private static final String SCHEME_RTMP = "rtmp"; + private static final String SCHEME_UDP = "udp"; + private static final String SCHEME_RAW = RawResourceDataSource.RAW_RESOURCE_SCHEME; + + private final Context context; + private final List transferListeners; + private final DataSource baseDataSource; + + // Lazily initialized. + @Nullable private DataSource fileDataSource; + @Nullable private DataSource assetDataSource; + @Nullable private DataSource contentDataSource; + @Nullable private DataSource rtmpDataSource; + @Nullable private DataSource udpDataSource; + @Nullable private DataSource dataSchemeDataSource; + @Nullable private DataSource rawResourceDataSource; + + @Nullable private DataSource dataSource; + + /** + * Constructs a new instance, optionally configured to follow cross-protocol redirects. + * + * @param context A context. + * @param userAgent The User-Agent to use when requesting remote data. + * @param allowCrossProtocolRedirects Whether cross-protocol redirects (i.e. redirects from HTTP + * to HTTPS and vice versa) are enabled when fetching remote data. + */ + public DefaultDataSource(Context context, String userAgent, boolean allowCrossProtocolRedirects) { + this( + context, + userAgent, + DefaultHttpDataSource.DEFAULT_CONNECT_TIMEOUT_MILLIS, + DefaultHttpDataSource.DEFAULT_READ_TIMEOUT_MILLIS, + allowCrossProtocolRedirects); + } + + /** + * Constructs a new instance, optionally configured to follow cross-protocol redirects. + * + * @param context A context. + * @param userAgent The User-Agent to use when requesting remote data. + * @param connectTimeoutMillis The connection timeout that should be used when requesting remote + * data, in milliseconds. A timeout of zero is interpreted as an infinite timeout. + * @param readTimeoutMillis The read timeout that should be used when requesting remote data, in + * milliseconds. A timeout of zero is interpreted as an infinite timeout. + * @param allowCrossProtocolRedirects Whether cross-protocol redirects (i.e. redirects from HTTP + * to HTTPS and vice versa) are enabled when fetching remote data. + */ + public DefaultDataSource( + Context context, + String userAgent, + int connectTimeoutMillis, + int readTimeoutMillis, + boolean allowCrossProtocolRedirects) { + this( + context, + new DefaultHttpDataSource( + userAgent, + connectTimeoutMillis, + readTimeoutMillis, + allowCrossProtocolRedirects, + /* defaultRequestProperties= */ null)); + } + + /** + * Constructs a new instance that delegates to a provided {@link DataSource} for URI schemes other + * than file, asset and content. + * + * @param context A context. + * @param baseDataSource A {@link DataSource} to use for URI schemes other than file, asset and + * content. This {@link DataSource} should normally support at least http(s). + */ + public DefaultDataSource(Context context, DataSource baseDataSource) { + this.context = context.getApplicationContext(); + this.baseDataSource = Assertions.checkNotNull(baseDataSource); + transferListeners = new ArrayList<>(); + } + + @Override + public void addTransferListener(TransferListener transferListener) { + baseDataSource.addTransferListener(transferListener); + transferListeners.add(transferListener); + maybeAddListenerToDataSource(fileDataSource, transferListener); + maybeAddListenerToDataSource(assetDataSource, transferListener); + maybeAddListenerToDataSource(contentDataSource, transferListener); + maybeAddListenerToDataSource(rtmpDataSource, transferListener); + maybeAddListenerToDataSource(udpDataSource, transferListener); + maybeAddListenerToDataSource(dataSchemeDataSource, transferListener); + maybeAddListenerToDataSource(rawResourceDataSource, transferListener); + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + Assertions.checkState(dataSource == null); + // Choose the correct source for the scheme. + String scheme = dataSpec.uri.getScheme(); + if (Util.isLocalFileUri(dataSpec.uri)) { + String uriPath = dataSpec.uri.getPath(); + if (uriPath != null && uriPath.startsWith("/android_asset/")) { + dataSource = getAssetDataSource(); + } else { + dataSource = getFileDataSource(); + } + } else if (SCHEME_ASSET.equals(scheme)) { + dataSource = getAssetDataSource(); + } else if (SCHEME_CONTENT.equals(scheme)) { + dataSource = getContentDataSource(); + } else if (SCHEME_RTMP.equals(scheme)) { + dataSource = getRtmpDataSource(); + } else if (SCHEME_UDP.equals(scheme)) { + dataSource = getUdpDataSource(); + } else if (DataSchemeDataSource.SCHEME_DATA.equals(scheme)) { + dataSource = getDataSchemeDataSource(); + } else if (SCHEME_RAW.equals(scheme)) { + dataSource = getRawResourceDataSource(); + } else { + dataSource = baseDataSource; + } + // Open the source and return. + return dataSource.open(dataSpec); + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws IOException { + return Assertions.checkNotNull(dataSource).read(buffer, offset, readLength); + } + + @Override + @Nullable + public Uri getUri() { + return dataSource == null ? null : dataSource.getUri(); + } + + @Override + public Map> getResponseHeaders() { + return dataSource == null ? Collections.emptyMap() : dataSource.getResponseHeaders(); + } + + @Override + public void close() throws IOException { + if (dataSource != null) { + try { + dataSource.close(); + } finally { + dataSource = null; + } + } + } + + private DataSource getUdpDataSource() { + if (udpDataSource == null) { + udpDataSource = new UdpDataSource(); + addListenersToDataSource(udpDataSource); + } + return udpDataSource; + } + + private DataSource getFileDataSource() { + if (fileDataSource == null) { + fileDataSource = new FileDataSource(); + addListenersToDataSource(fileDataSource); + } + return fileDataSource; + } + + private DataSource getAssetDataSource() { + if (assetDataSource == null) { + assetDataSource = new AssetDataSource(context); + addListenersToDataSource(assetDataSource); + } + return assetDataSource; + } + + private DataSource getContentDataSource() { + if (contentDataSource == null) { + contentDataSource = new ContentDataSource(context); + addListenersToDataSource(contentDataSource); + } + return contentDataSource; + } + + private DataSource getRtmpDataSource() { + if (rtmpDataSource == null) { + try { + // LINT.IfChange + Class clazz = Class.forName("com.google.android.exoplayer2.ext.rtmp.RtmpDataSource"); + rtmpDataSource = (DataSource) clazz.getConstructor().newInstance(); + // LINT.ThenChange(../../../../../../../../proguard-rules.txt) + addListenersToDataSource(rtmpDataSource); + } catch (ClassNotFoundException e) { + // Expected if the app was built without the RTMP extension. + Log.w(TAG, "Attempting to play RTMP stream without depending on the RTMP extension"); + } catch (Exception e) { + // The RTMP extension is present, but instantiation failed. + throw new RuntimeException("Error instantiating RTMP extension", e); + } + if (rtmpDataSource == null) { + rtmpDataSource = baseDataSource; + } + } + return rtmpDataSource; + } + + private DataSource getDataSchemeDataSource() { + if (dataSchemeDataSource == null) { + dataSchemeDataSource = new DataSchemeDataSource(); + addListenersToDataSource(dataSchemeDataSource); + } + return dataSchemeDataSource; + } + + private DataSource getRawResourceDataSource() { + if (rawResourceDataSource == null) { + rawResourceDataSource = new RawResourceDataSource(context); + addListenersToDataSource(rawResourceDataSource); + } + return rawResourceDataSource; + } + + private void addListenersToDataSource(DataSource dataSource) { + for (int i = 0; i < transferListeners.size(); i++) { + dataSource.addTransferListener(transferListeners.get(i)); + } + } + + private void maybeAddListenerToDataSource( + @Nullable DataSource dataSource, TransferListener listener) { + if (dataSource != null) { + dataSource.addTransferListener(listener); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultDataSourceFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultDataSourceFactory.java new file mode 100644 index 0000000000..81add13c10 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultDataSourceFactory.java @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.content.Context; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource.Factory; + +/** + * A {@link Factory} that produces {@link DefaultDataSource} instances that delegate to + * {@link DefaultHttpDataSource}s for non-file/asset/content URIs. + */ +public final class DefaultDataSourceFactory implements Factory { + + private final Context context; + @Nullable private final TransferListener listener; + private final DataSource.Factory baseDataSourceFactory; + + /** + * @param context A context. + * @param userAgent The User-Agent string that should be used. + */ + public DefaultDataSourceFactory(Context context, String userAgent) { + this(context, userAgent, /* listener= */ null); + } + + /** + * @param context A context. + * @param userAgent The User-Agent string that should be used. + * @param listener An optional listener. + */ + public DefaultDataSourceFactory( + Context context, String userAgent, @Nullable TransferListener listener) { + this(context, listener, new DefaultHttpDataSourceFactory(userAgent, listener)); + } + + /** + * @param context A context. + * @param baseDataSourceFactory A {@link Factory} to be used to create a base {@link DataSource} + * for {@link DefaultDataSource}. + * @see DefaultDataSource#DefaultDataSource(Context, DataSource) + */ + public DefaultDataSourceFactory(Context context, DataSource.Factory baseDataSourceFactory) { + this(context, /* listener= */ null, baseDataSourceFactory); + } + + /** + * @param context A context. + * @param listener An optional listener. + * @param baseDataSourceFactory A {@link Factory} to be used to create a base {@link DataSource} + * for {@link DefaultDataSource}. + * @see DefaultDataSource#DefaultDataSource(Context, DataSource) + */ + public DefaultDataSourceFactory( + Context context, + @Nullable TransferListener listener, + DataSource.Factory baseDataSourceFactory) { + this.context = context.getApplicationContext(); + this.listener = listener; + this.baseDataSourceFactory = baseDataSourceFactory; + } + + @Override + public DefaultDataSource createDataSource() { + DefaultDataSource dataSource = + new DefaultDataSource(context, baseDataSourceFactory.createDataSource()); + if (listener != null) { + dataSource.addTransferListener(listener); + } + return dataSource; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultHttpDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultHttpDataSource.java new file mode 100644 index 0000000000..c0e8e23bfe --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultHttpDataSource.java @@ -0,0 +1,798 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import androidx.annotation.VisibleForTesting; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec.HttpMethod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Predicate; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.EOFException; +import java.io.IOException; +import java.io.InputStream; +import java.io.InterruptedIOException; +import java.io.OutputStream; +import java.lang.reflect.Method; +import java.net.HttpURLConnection; +import java.net.NoRouteToHostException; +import java.net.ProtocolException; +import java.net.Proxy; +import java.net.URI; +import java.net.URISyntaxException; +import java.net.URL; +import java.net.URLConnection; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.concurrent.atomic.AtomicReference; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import java.util.zip.GZIPInputStream; + +/** + * An {@link HttpDataSource} that uses Android's {@link HttpURLConnection}. + * + *

By default this implementation will not follow cross-protocol redirects (i.e. redirects from + * HTTP to HTTPS or vice versa). Cross-protocol redirects can be enabled by using the {@link + * #DefaultHttpDataSource(String, int, int, boolean, RequestProperties)} constructor and passing + * {@code true} for the {@code allowCrossProtocolRedirects} argument. + * + *

Note: HTTP request headers will be set using all parameters passed via (in order of decreasing + * priority) the {@code dataSpec}, {@link #setRequestProperty} and the default parameters used to + * construct the instance. + */ +public class DefaultHttpDataSource extends BaseDataSource implements HttpDataSource { + + /** The default connection timeout, in milliseconds. */ + public static final int DEFAULT_CONNECT_TIMEOUT_MILLIS = 8 * 1000; + /** + * The default read timeout, in milliseconds. + */ + public static final int DEFAULT_READ_TIMEOUT_MILLIS = 8 * 1000; + + private static final String TAG = "DefaultHttpDataSource"; + private static final int MAX_REDIRECTS = 20; // Same limit as okhttp. + private static final int HTTP_STATUS_TEMPORARY_REDIRECT = 307; + private static final int HTTP_STATUS_PERMANENT_REDIRECT = 308; + private static final long MAX_BYTES_TO_DRAIN = 2048; + private static final Pattern CONTENT_RANGE_HEADER = + Pattern.compile("^bytes (\\d+)-(\\d+)/(\\d+)$"); + private static final AtomicReference skipBufferReference = new AtomicReference<>(); + + private final boolean allowCrossProtocolRedirects; + private final int connectTimeoutMillis; + private final int readTimeoutMillis; + private final String userAgent; + @Nullable private final RequestProperties defaultRequestProperties; + private final RequestProperties requestProperties; + + @Nullable private Predicate contentTypePredicate; + @Nullable private DataSpec dataSpec; + @Nullable private HttpURLConnection connection; + @Nullable private InputStream inputStream; + private boolean opened; + private int responseCode; + + private long bytesToSkip; + private long bytesToRead; + + private long bytesSkipped; + private long bytesRead; + + /** @param userAgent The User-Agent string that should be used. */ + public DefaultHttpDataSource(String userAgent) { + this(userAgent, DEFAULT_CONNECT_TIMEOUT_MILLIS, DEFAULT_READ_TIMEOUT_MILLIS); + } + + /** + * @param userAgent The User-Agent string that should be used. + * @param connectTimeoutMillis The connection timeout, in milliseconds. A timeout of zero is + * interpreted as an infinite timeout. + * @param readTimeoutMillis The read timeout, in milliseconds. A timeout of zero is interpreted as + * an infinite timeout. + */ + public DefaultHttpDataSource(String userAgent, int connectTimeoutMillis, int readTimeoutMillis) { + this( + userAgent, + connectTimeoutMillis, + readTimeoutMillis, + /* allowCrossProtocolRedirects= */ false, + /* defaultRequestProperties= */ null); + } + + /** + * @param userAgent The User-Agent string that should be used. + * @param connectTimeoutMillis The connection timeout, in milliseconds. A timeout of zero is + * interpreted as an infinite timeout. Pass {@link #DEFAULT_CONNECT_TIMEOUT_MILLIS} to use the + * default value. + * @param readTimeoutMillis The read timeout, in milliseconds. A timeout of zero is interpreted as + * an infinite timeout. Pass {@link #DEFAULT_READ_TIMEOUT_MILLIS} to use the default value. + * @param allowCrossProtocolRedirects Whether cross-protocol redirects (i.e. redirects from HTTP + * to HTTPS and vice versa) are enabled. + * @param defaultRequestProperties The default request properties to be sent to the server as HTTP + * headers or {@code null} if not required. + */ + public DefaultHttpDataSource( + String userAgent, + int connectTimeoutMillis, + int readTimeoutMillis, + boolean allowCrossProtocolRedirects, + @Nullable RequestProperties defaultRequestProperties) { + super(/* isNetwork= */ true); + this.userAgent = Assertions.checkNotEmpty(userAgent); + this.requestProperties = new RequestProperties(); + this.connectTimeoutMillis = connectTimeoutMillis; + this.readTimeoutMillis = readTimeoutMillis; + this.allowCrossProtocolRedirects = allowCrossProtocolRedirects; + this.defaultRequestProperties = defaultRequestProperties; + } + + /** + * @param userAgent The User-Agent string that should be used. + * @param contentTypePredicate An optional {@link Predicate}. If a content type is rejected by the + * predicate then a {@link HttpDataSource.InvalidContentTypeException} is thrown from {@link + * #open(DataSpec)}. + * @deprecated Use {@link #DefaultHttpDataSource(String)} and {@link + * #setContentTypePredicate(Predicate)}. + */ + @Deprecated + public DefaultHttpDataSource(String userAgent, @Nullable Predicate contentTypePredicate) { + this( + userAgent, + contentTypePredicate, + DEFAULT_CONNECT_TIMEOUT_MILLIS, + DEFAULT_READ_TIMEOUT_MILLIS); + } + + /** + * @param userAgent The User-Agent string that should be used. + * @param contentTypePredicate An optional {@link Predicate}. If a content type is rejected by the + * predicate then a {@link HttpDataSource.InvalidContentTypeException} is thrown from {@link + * #open(DataSpec)}. + * @param connectTimeoutMillis The connection timeout, in milliseconds. A timeout of zero is + * interpreted as an infinite timeout. + * @param readTimeoutMillis The read timeout, in milliseconds. A timeout of zero is interpreted as + * an infinite timeout. + * @deprecated Use {@link #DefaultHttpDataSource(String, int, int)} and {@link + * #setContentTypePredicate(Predicate)}. + */ + @SuppressWarnings("deprecation") + @Deprecated + public DefaultHttpDataSource( + String userAgent, + @Nullable Predicate contentTypePredicate, + int connectTimeoutMillis, + int readTimeoutMillis) { + this( + userAgent, + contentTypePredicate, + connectTimeoutMillis, + readTimeoutMillis, + /* allowCrossProtocolRedirects= */ false, + /* defaultRequestProperties= */ null); + } + + /** + * @param userAgent The User-Agent string that should be used. + * @param contentTypePredicate An optional {@link Predicate}. If a content type is rejected by the + * predicate then a {@link HttpDataSource.InvalidContentTypeException} is thrown from {@link + * #open(DataSpec)}. + * @param connectTimeoutMillis The connection timeout, in milliseconds. A timeout of zero is + * interpreted as an infinite timeout. Pass {@link #DEFAULT_CONNECT_TIMEOUT_MILLIS} to use the + * default value. + * @param readTimeoutMillis The read timeout, in milliseconds. A timeout of zero is interpreted as + * an infinite timeout. Pass {@link #DEFAULT_READ_TIMEOUT_MILLIS} to use the default value. + * @param allowCrossProtocolRedirects Whether cross-protocol redirects (i.e. redirects from HTTP + * to HTTPS and vice versa) are enabled. + * @param defaultRequestProperties The default request properties to be sent to the server as HTTP + * headers or {@code null} if not required. + * @deprecated Use {@link #DefaultHttpDataSource(String, int, int, boolean, RequestProperties)} + * and {@link #setContentTypePredicate(Predicate)}. + */ + @Deprecated + public DefaultHttpDataSource( + String userAgent, + @Nullable Predicate contentTypePredicate, + int connectTimeoutMillis, + int readTimeoutMillis, + boolean allowCrossProtocolRedirects, + @Nullable RequestProperties defaultRequestProperties) { + super(/* isNetwork= */ true); + this.userAgent = Assertions.checkNotEmpty(userAgent); + this.contentTypePredicate = contentTypePredicate; + this.requestProperties = new RequestProperties(); + this.connectTimeoutMillis = connectTimeoutMillis; + this.readTimeoutMillis = readTimeoutMillis; + this.allowCrossProtocolRedirects = allowCrossProtocolRedirects; + this.defaultRequestProperties = defaultRequestProperties; + } + + /** + * Sets a content type {@link Predicate}. If a content type is rejected by the predicate then a + * {@link HttpDataSource.InvalidContentTypeException} is thrown from {@link #open(DataSpec)}. + * + * @param contentTypePredicate The content type {@link Predicate}, or {@code null} to clear a + * predicate that was previously set. + */ + public void setContentTypePredicate(@Nullable Predicate contentTypePredicate) { + this.contentTypePredicate = contentTypePredicate; + } + + @Override + @Nullable + public Uri getUri() { + return connection == null ? null : Uri.parse(connection.getURL().toString()); + } + + @Override + public int getResponseCode() { + return connection == null || responseCode <= 0 ? -1 : responseCode; + } + + @Override + public Map> getResponseHeaders() { + return connection == null ? Collections.emptyMap() : connection.getHeaderFields(); + } + + @Override + public void setRequestProperty(String name, String value) { + Assertions.checkNotNull(name); + Assertions.checkNotNull(value); + requestProperties.set(name, value); + } + + @Override + public void clearRequestProperty(String name) { + Assertions.checkNotNull(name); + requestProperties.remove(name); + } + + @Override + public void clearAllRequestProperties() { + requestProperties.clear(); + } + + /** + * Opens the source to read the specified data. + */ + @Override + public long open(DataSpec dataSpec) throws HttpDataSourceException { + this.dataSpec = dataSpec; + this.bytesRead = 0; + this.bytesSkipped = 0; + transferInitializing(dataSpec); + try { + connection = makeConnection(dataSpec); + } catch (IOException e) { + throw new HttpDataSourceException( + "Unable to connect", e, dataSpec, HttpDataSourceException.TYPE_OPEN); + } catch (URISyntaxException e) { + throw new HttpDataSourceException("URI invalid: " + dataSpec.uri.toString(), dataSpec, HttpDataSourceException.TYPE_OPEN); + } + + String responseMessage; + try { + responseCode = connection.getResponseCode(); + responseMessage = connection.getResponseMessage(); + } catch (IOException e) { + closeConnectionQuietly(); + throw new HttpDataSourceException( + "Unable to connect", e, dataSpec, HttpDataSourceException.TYPE_OPEN); + } + + // Check for a valid response code. + if (responseCode < 200 || responseCode > 299) { + Map> headers = connection.getHeaderFields(); + closeConnectionQuietly(); + InvalidResponseCodeException exception = + new InvalidResponseCodeException(responseCode, responseMessage, headers, dataSpec); + if (responseCode == 416) { + exception.initCause(new DataSourceException(DataSourceException.POSITION_OUT_OF_RANGE)); + } + throw exception; + } + + // Check for a valid content type. + String contentType = connection.getContentType(); + if (contentTypePredicate != null && !contentTypePredicate.evaluate(contentType)) { + closeConnectionQuietly(); + throw new InvalidContentTypeException(contentType, dataSpec); + } + + // If we requested a range starting from a non-zero position and received a 200 rather than a + // 206, then the server does not support partial requests. We'll need to manually skip to the + // requested position. + bytesToSkip = responseCode == 200 && dataSpec.position != 0 ? dataSpec.position : 0; + + // Determine the length of the data to be read, after skipping. + boolean isCompressed = isCompressed(connection); + if (!isCompressed) { + if (dataSpec.length != C.LENGTH_UNSET) { + bytesToRead = dataSpec.length; + } else { + long contentLength = getContentLength(connection); + bytesToRead = contentLength != C.LENGTH_UNSET ? (contentLength - bytesToSkip) + : C.LENGTH_UNSET; + } + } else { + // Gzip is enabled. If the server opts to use gzip then the content length in the response + // will be that of the compressed data, which isn't what we want. Always use the dataSpec + // length in this case. + bytesToRead = dataSpec.length; + } + + try { + inputStream = connection.getInputStream(); + if (isCompressed) { + inputStream = new GZIPInputStream(inputStream); + } + } catch (IOException e) { + closeConnectionQuietly(); + throw new HttpDataSourceException(e, dataSpec, HttpDataSourceException.TYPE_OPEN); + } + + opened = true; + transferStarted(dataSpec); + + return bytesToRead; + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws HttpDataSourceException { + try { + skipInternal(); + return readInternal(buffer, offset, readLength); + } catch (IOException e) { + throw new HttpDataSourceException(e, dataSpec, HttpDataSourceException.TYPE_READ); + } + } + + @Override + public void close() throws HttpDataSourceException { + try { + if (inputStream != null) { + maybeTerminateInputStream(connection, bytesRemaining()); + try { + inputStream.close(); + } catch (IOException e) { + throw new HttpDataSourceException(e, dataSpec, HttpDataSourceException.TYPE_CLOSE); + } + } + } finally { + inputStream = null; + closeConnectionQuietly(); + if (opened) { + opened = false; + transferEnded(); + } + } + } + + /** + * Returns the current connection, or null if the source is not currently opened. + * + * @return The current open connection, or null. + */ + protected final @Nullable HttpURLConnection getConnection() { + return connection; + } + + /** + * Returns the number of bytes that have been skipped since the most recent call to + * {@link #open(DataSpec)}. + * + * @return The number of bytes skipped. + */ + protected final long bytesSkipped() { + return bytesSkipped; + } + + /** + * Returns the number of bytes that have been read since the most recent call to + * {@link #open(DataSpec)}. + * + * @return The number of bytes read. + */ + protected final long bytesRead() { + return bytesRead; + } + + /** + * Returns the number of bytes that are still to be read for the current {@link DataSpec}. + *

+ * If the total length of the data being read is known, then this length minus {@code bytesRead()} + * is returned. If the total length is unknown, {@link C#LENGTH_UNSET} is returned. + * + * @return The remaining length, or {@link C#LENGTH_UNSET}. + */ + protected final long bytesRemaining() { + return bytesToRead == C.LENGTH_UNSET ? bytesToRead : bytesToRead - bytesRead; + } + + /** + * Establishes a connection, following redirects to do so where permitted. + */ + private HttpURLConnection makeConnection(DataSpec dataSpec) throws IOException, URISyntaxException { + URL url = new URL(dataSpec.uri.toString()); + @HttpMethod int httpMethod = dataSpec.httpMethod; + byte[] httpBody = dataSpec.httpBody; + long position = dataSpec.position; + long length = dataSpec.length; + boolean allowGzip = dataSpec.isFlagSet(DataSpec.FLAG_ALLOW_GZIP); + + if (!allowCrossProtocolRedirects) { + // HttpURLConnection disallows cross-protocol redirects, but otherwise performs redirection + // automatically. This is the behavior we want, so use it. + return makeConnection( + url, + httpMethod, + httpBody, + position, + length, + allowGzip, + /* followRedirects= */ true, + dataSpec.httpRequestHeaders); + } + + // We need to handle redirects ourselves to allow cross-protocol redirects. + int redirectCount = 0; + while (redirectCount++ <= MAX_REDIRECTS) { + HttpURLConnection connection = + makeConnection( + url, + httpMethod, + httpBody, + position, + length, + allowGzip, + /* followRedirects= */ false, + dataSpec.httpRequestHeaders); + int responseCode = connection.getResponseCode(); + String location = connection.getHeaderField("Location"); + if ((httpMethod == DataSpec.HTTP_METHOD_GET || httpMethod == DataSpec.HTTP_METHOD_HEAD) + && (responseCode == HttpURLConnection.HTTP_MULT_CHOICE + || responseCode == HttpURLConnection.HTTP_MOVED_PERM + || responseCode == HttpURLConnection.HTTP_MOVED_TEMP + || responseCode == HttpURLConnection.HTTP_SEE_OTHER + || responseCode == HTTP_STATUS_TEMPORARY_REDIRECT + || responseCode == HTTP_STATUS_PERMANENT_REDIRECT)) { + connection.disconnect(); + url = handleRedirect(url, location); + } else if (httpMethod == DataSpec.HTTP_METHOD_POST + && (responseCode == HttpURLConnection.HTTP_MULT_CHOICE + || responseCode == HttpURLConnection.HTTP_MOVED_PERM + || responseCode == HttpURLConnection.HTTP_MOVED_TEMP + || responseCode == HttpURLConnection.HTTP_SEE_OTHER)) { + // POST request follows the redirect and is transformed into a GET request. + connection.disconnect(); + httpMethod = DataSpec.HTTP_METHOD_GET; + httpBody = null; + url = handleRedirect(url, location); + } else { + return connection; + } + } + + // If we get here we've been redirected more times than are permitted. + throw new NoRouteToHostException("Too many redirects: " + redirectCount); + } + + private static URLConnection openConnectionWithProxy(final URI uri) throws IOException { + final java.net.ProxySelector ps = java.net.ProxySelector.getDefault(); + Proxy proxy = Proxy.NO_PROXY; + if (ps != null) { + final List proxies = ps.select(uri); + if (proxies != null && !proxies.isEmpty()) { + proxy = proxies.get(0); + } + } + + return uri.toURL().openConnection(proxy); + } + + /** + * Configures a connection and opens it. + * + * @param url The url to connect to. + * @param httpMethod The http method. + * @param httpBody The body data. + * @param position The byte offset of the requested data. + * @param length The length of the requested data, or {@link C#LENGTH_UNSET}. + * @param allowGzip Whether to allow the use of gzip. + * @param followRedirects Whether to follow redirects. + * @param requestParameters parameters (HTTP headers) to include in request. + */ + private HttpURLConnection makeConnection( + URL url, + @HttpMethod int httpMethod, + byte[] httpBody, + long position, + long length, + boolean allowGzip, + boolean followRedirects, + Map requestParameters) + throws IOException, URISyntaxException { + /** + * Tor Project modified the way the connection object was created. For the sake of + * simplicity, instead of duplicating the whole file we changed the connection object + * to use the ProxySelector. + */ + HttpURLConnection connection = (HttpURLConnection) openConnectionWithProxy(url.toURI()); + + connection.setConnectTimeout(connectTimeoutMillis); + connection.setReadTimeout(readTimeoutMillis); + + Map requestHeaders = new HashMap<>(); + if (defaultRequestProperties != null) { + requestHeaders.putAll(defaultRequestProperties.getSnapshot()); + } + requestHeaders.putAll(requestProperties.getSnapshot()); + requestHeaders.putAll(requestParameters); + + for (Map.Entry property : requestHeaders.entrySet()) { + connection.setRequestProperty(property.getKey(), property.getValue()); + } + + if (!(position == 0 && length == C.LENGTH_UNSET)) { + String rangeRequest = "bytes=" + position + "-"; + if (length != C.LENGTH_UNSET) { + rangeRequest += (position + length - 1); + } + connection.setRequestProperty("Range", rangeRequest); + } + connection.setRequestProperty("User-Agent", userAgent); + connection.setRequestProperty("Accept-Encoding", allowGzip ? "gzip" : "identity"); + connection.setInstanceFollowRedirects(followRedirects); + connection.setDoOutput(httpBody != null); + connection.setRequestMethod(DataSpec.getStringForHttpMethod(httpMethod)); + + if (httpBody != null) { + connection.setFixedLengthStreamingMode(httpBody.length); + connection.connect(); + OutputStream os = connection.getOutputStream(); + os.write(httpBody); + os.close(); + } else { + connection.connect(); + } + return connection; + } + + /** Creates an {@link HttpURLConnection} that is connected with the {@code url}. */ + @VisibleForTesting + /* package */ HttpURLConnection openConnection(URL url) throws IOException { + return (HttpURLConnection) url.openConnection(); + } + + /** + * Handles a redirect. + * + * @param originalUrl The original URL. + * @param location The Location header in the response. + * @return The next URL. + * @throws IOException If redirection isn't possible. + */ + private static URL handleRedirect(URL originalUrl, String location) throws IOException { + if (location == null) { + throw new ProtocolException("Null location redirect"); + } + // Form the new url. + URL url = new URL(originalUrl, location); + // Check that the protocol of the new url is supported. + String protocol = url.getProtocol(); + if (!"https".equals(protocol) && !"http".equals(protocol)) { + throw new ProtocolException("Unsupported protocol redirect: " + protocol); + } + // Currently this method is only called if allowCrossProtocolRedirects is true, and so the code + // below isn't required. If we ever decide to handle redirects ourselves when cross-protocol + // redirects are disabled, we'll need to uncomment this block of code. + // if (!allowCrossProtocolRedirects && !protocol.equals(originalUrl.getProtocol())) { + // throw new ProtocolException("Disallowed cross-protocol redirect (" + // + originalUrl.getProtocol() + " to " + protocol + ")"); + // } + return url; + } + + /** + * Attempts to extract the length of the content from the response headers of an open connection. + * + * @param connection The open connection. + * @return The extracted length, or {@link C#LENGTH_UNSET}. + */ + private static long getContentLength(HttpURLConnection connection) { + long contentLength = C.LENGTH_UNSET; + String contentLengthHeader = connection.getHeaderField("Content-Length"); + if (!TextUtils.isEmpty(contentLengthHeader)) { + try { + contentLength = Long.parseLong(contentLengthHeader); + } catch (NumberFormatException e) { + Log.e(TAG, "Unexpected Content-Length [" + contentLengthHeader + "]"); + } + } + String contentRangeHeader = connection.getHeaderField("Content-Range"); + if (!TextUtils.isEmpty(contentRangeHeader)) { + Matcher matcher = CONTENT_RANGE_HEADER.matcher(contentRangeHeader); + if (matcher.find()) { + try { + long contentLengthFromRange = + Long.parseLong(matcher.group(2)) - Long.parseLong(matcher.group(1)) + 1; + if (contentLength < 0) { + // Some proxy servers strip the Content-Length header. Fall back to the length + // calculated here in this case. + contentLength = contentLengthFromRange; + } else if (contentLength != contentLengthFromRange) { + // If there is a discrepancy between the Content-Length and Content-Range headers, + // assume the one with the larger value is correct. We have seen cases where carrier + // change one of them to reduce the size of a request, but it is unlikely anybody would + // increase it. + Log.w(TAG, "Inconsistent headers [" + contentLengthHeader + "] [" + contentRangeHeader + + "]"); + contentLength = Math.max(contentLength, contentLengthFromRange); + } + } catch (NumberFormatException e) { + Log.e(TAG, "Unexpected Content-Range [" + contentRangeHeader + "]"); + } + } + } + return contentLength; + } + + /** + * Skips any bytes that need skipping. Else does nothing. + *

+ * This implementation is based roughly on {@code libcore.io.Streams.skipByReading()}. + * + * @throws InterruptedIOException If the thread is interrupted during the operation. + * @throws EOFException If the end of the input stream is reached before the bytes are skipped. + */ + private void skipInternal() throws IOException { + if (bytesSkipped == bytesToSkip) { + return; + } + + // Acquire the shared skip buffer. + byte[] skipBuffer = skipBufferReference.getAndSet(null); + if (skipBuffer == null) { + skipBuffer = new byte[4096]; + } + + while (bytesSkipped != bytesToSkip) { + int readLength = (int) Math.min(bytesToSkip - bytesSkipped, skipBuffer.length); + int read = inputStream.read(skipBuffer, 0, readLength); + if (Thread.currentThread().isInterrupted()) { + throw new InterruptedIOException(); + } + if (read == -1) { + throw new EOFException(); + } + bytesSkipped += read; + bytesTransferred(read); + } + + // Release the shared skip buffer. + skipBufferReference.set(skipBuffer); + } + + /** + * Reads up to {@code length} bytes of data and stores them into {@code buffer}, starting at + * index {@code offset}. + *

+ * This method blocks until at least one byte of data can be read, the end of the opened range is + * detected, or an exception is thrown. + * + * @param buffer The buffer into which the read data should be stored. + * @param offset The start offset into {@code buffer} at which data should be written. + * @param readLength The maximum number of bytes to read. + * @return The number of bytes read, or {@link C#RESULT_END_OF_INPUT} if the end of the opened + * range is reached. + * @throws IOException If an error occurs reading from the source. + */ + private int readInternal(byte[] buffer, int offset, int readLength) throws IOException { + if (readLength == 0) { + return 0; + } + if (bytesToRead != C.LENGTH_UNSET) { + long bytesRemaining = bytesToRead - bytesRead; + if (bytesRemaining == 0) { + return C.RESULT_END_OF_INPUT; + } + readLength = (int) Math.min(readLength, bytesRemaining); + } + + int read = inputStream.read(buffer, offset, readLength); + if (read == -1) { + if (bytesToRead != C.LENGTH_UNSET) { + // End of stream reached having not read sufficient data. + throw new EOFException(); + } + return C.RESULT_END_OF_INPUT; + } + + bytesRead += read; + bytesTransferred(read); + return read; + } + + /** + * On platform API levels 19 and 20, okhttp's implementation of {@link InputStream#close} can + * block for a long time if the stream has a lot of data remaining. Call this method before + * closing the input stream to make a best effort to cause the input stream to encounter an + * unexpected end of input, working around this issue. On other platform API levels, the method + * does nothing. + * + * @param connection The connection whose {@link InputStream} should be terminated. + * @param bytesRemaining The number of bytes remaining to be read from the input stream if its + * length is known. {@link C#LENGTH_UNSET} otherwise. + */ + private static void maybeTerminateInputStream(HttpURLConnection connection, long bytesRemaining) { + if (Util.SDK_INT != 19 && Util.SDK_INT != 20) { + return; + } + + try { + InputStream inputStream = connection.getInputStream(); + if (bytesRemaining == C.LENGTH_UNSET) { + // If the input stream has already ended, do nothing. The socket may be re-used. + if (inputStream.read() == -1) { + return; + } + } else if (bytesRemaining <= MAX_BYTES_TO_DRAIN) { + // There isn't much data left. Prefer to allow it to drain, which may allow the socket to be + // re-used. + return; + } + String className = inputStream.getClass().getName(); + if ("com.android.okhttp.internal.http.HttpTransport$ChunkedInputStream".equals(className) + || "com.android.okhttp.internal.http.HttpTransport$FixedLengthInputStream" + .equals(className)) { + Class superclass = inputStream.getClass().getSuperclass(); + Method unexpectedEndOfInput = superclass.getDeclaredMethod("unexpectedEndOfInput"); + unexpectedEndOfInput.setAccessible(true); + unexpectedEndOfInput.invoke(inputStream); + } + } catch (Exception e) { + // If an IOException then the connection didn't ever have an input stream, or it was closed + // already. If another type of exception then something went wrong, most likely the device + // isn't using okhttp. + } + } + + + /** + * Closes the current connection quietly, if there is one. + */ + private void closeConnectionQuietly() { + if (connection != null) { + try { + connection.disconnect(); + } catch (Exception e) { + Log.e(TAG, "Unexpected error while disconnecting", e); + } + connection = null; + } + } + + private static boolean isCompressed(HttpURLConnection connection) { + String contentEncoding = connection.getHeaderField("Content-Encoding"); + return "gzip".equalsIgnoreCase(contentEncoding); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultHttpDataSourceFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultHttpDataSourceFactory.java new file mode 100644 index 0000000000..cf7448fbd0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultHttpDataSourceFactory.java @@ -0,0 +1,119 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.HttpDataSource.BaseFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.HttpDataSource.Factory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** A {@link Factory} that produces {@link DefaultHttpDataSource} instances. */ +public final class DefaultHttpDataSourceFactory extends BaseFactory { + + private final String userAgent; + @Nullable private final TransferListener listener; + private final int connectTimeoutMillis; + private final int readTimeoutMillis; + private final boolean allowCrossProtocolRedirects; + + /** + * Constructs a DefaultHttpDataSourceFactory. Sets {@link + * DefaultHttpDataSource#DEFAULT_CONNECT_TIMEOUT_MILLIS} as the connection timeout, {@link + * DefaultHttpDataSource#DEFAULT_READ_TIMEOUT_MILLIS} as the read timeout and disables + * cross-protocol redirects. + * + * @param userAgent The User-Agent string that should be used. + */ + public DefaultHttpDataSourceFactory(String userAgent) { + this(userAgent, null); + } + + /** + * Constructs a DefaultHttpDataSourceFactory. Sets {@link + * DefaultHttpDataSource#DEFAULT_CONNECT_TIMEOUT_MILLIS} as the connection timeout, {@link + * DefaultHttpDataSource#DEFAULT_READ_TIMEOUT_MILLIS} as the read timeout and disables + * cross-protocol redirects. + * + * @param userAgent The User-Agent string that should be used. + * @param listener An optional listener. + * @see #DefaultHttpDataSourceFactory(String, TransferListener, int, int, boolean) + */ + public DefaultHttpDataSourceFactory(String userAgent, @Nullable TransferListener listener) { + this(userAgent, listener, DefaultHttpDataSource.DEFAULT_CONNECT_TIMEOUT_MILLIS, + DefaultHttpDataSource.DEFAULT_READ_TIMEOUT_MILLIS, false); + } + + /** + * @param userAgent The User-Agent string that should be used. + * @param connectTimeoutMillis The connection timeout that should be used when requesting remote + * data, in milliseconds. A timeout of zero is interpreted as an infinite timeout. + * @param readTimeoutMillis The read timeout that should be used when requesting remote data, in + * milliseconds. A timeout of zero is interpreted as an infinite timeout. + * @param allowCrossProtocolRedirects Whether cross-protocol redirects (i.e. redirects from HTTP + * to HTTPS and vice versa) are enabled. + */ + public DefaultHttpDataSourceFactory( + String userAgent, + int connectTimeoutMillis, + int readTimeoutMillis, + boolean allowCrossProtocolRedirects) { + this( + userAgent, + /* listener= */ null, + connectTimeoutMillis, + readTimeoutMillis, + allowCrossProtocolRedirects); + } + + /** + * @param userAgent The User-Agent string that should be used. + * @param listener An optional listener. + * @param connectTimeoutMillis The connection timeout that should be used when requesting remote + * data, in milliseconds. A timeout of zero is interpreted as an infinite timeout. + * @param readTimeoutMillis The read timeout that should be used when requesting remote data, in + * milliseconds. A timeout of zero is interpreted as an infinite timeout. + * @param allowCrossProtocolRedirects Whether cross-protocol redirects (i.e. redirects from HTTP + * to HTTPS and vice versa) are enabled. + */ + public DefaultHttpDataSourceFactory( + String userAgent, + @Nullable TransferListener listener, + int connectTimeoutMillis, + int readTimeoutMillis, + boolean allowCrossProtocolRedirects) { + this.userAgent = Assertions.checkNotEmpty(userAgent); + this.listener = listener; + this.connectTimeoutMillis = connectTimeoutMillis; + this.readTimeoutMillis = readTimeoutMillis; + this.allowCrossProtocolRedirects = allowCrossProtocolRedirects; + } + + @Override + protected DefaultHttpDataSource createDataSourceInternal( + HttpDataSource.RequestProperties defaultRequestProperties) { + DefaultHttpDataSource dataSource = + new DefaultHttpDataSource( + userAgent, + connectTimeoutMillis, + readTimeoutMillis, + allowCrossProtocolRedirects, + defaultRequestProperties); + if (listener != null) { + dataSource.addTransferListener(listener); + } + return dataSource; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultLoadErrorHandlingPolicy.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultLoadErrorHandlingPolicy.java new file mode 100644 index 0000000000..082014b7ef --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DefaultLoadErrorHandlingPolicy.java @@ -0,0 +1,110 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.HttpDataSource.InvalidResponseCodeException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.UnexpectedLoaderException; +import java.io.FileNotFoundException; +import java.io.IOException; + +/** Default implementation of {@link LoadErrorHandlingPolicy}. */ +public class DefaultLoadErrorHandlingPolicy implements LoadErrorHandlingPolicy { + + /** The default minimum number of times to retry loading data prior to propagating the error. */ + public static final int DEFAULT_MIN_LOADABLE_RETRY_COUNT = 3; + /** + * The default minimum number of times to retry loading prior to failing for progressive live + * streams. + */ + public static final int DEFAULT_MIN_LOADABLE_RETRY_COUNT_PROGRESSIVE_LIVE = 6; + /** The default duration for which a track is blacklisted in milliseconds. */ + public static final long DEFAULT_TRACK_BLACKLIST_MS = 60000; + + private static final int DEFAULT_BEHAVIOR_MIN_LOADABLE_RETRY_COUNT = -1; + + private final int minimumLoadableRetryCount; + + /** + * Creates an instance with default behavior. + * + *

{@link #getMinimumLoadableRetryCount} will return {@link + * #DEFAULT_MIN_LOADABLE_RETRY_COUNT_PROGRESSIVE_LIVE} for {@code dataType} {@link + * C#DATA_TYPE_MEDIA_PROGRESSIVE_LIVE}. For other {@code dataType} values, it will return {@link + * #DEFAULT_MIN_LOADABLE_RETRY_COUNT}. + */ + public DefaultLoadErrorHandlingPolicy() { + this(DEFAULT_BEHAVIOR_MIN_LOADABLE_RETRY_COUNT); + } + + /** + * Creates an instance with the given value for {@link #getMinimumLoadableRetryCount(int)}. + * + * @param minimumLoadableRetryCount See {@link #getMinimumLoadableRetryCount}. + */ + public DefaultLoadErrorHandlingPolicy(int minimumLoadableRetryCount) { + this.minimumLoadableRetryCount = minimumLoadableRetryCount; + } + + /** + * Blacklists resources whose load error was an {@link InvalidResponseCodeException} with response + * code HTTP 404 or 410. The duration of the blacklisting is {@link #DEFAULT_TRACK_BLACKLIST_MS}. + */ + @Override + public long getBlacklistDurationMsFor( + int dataType, long loadDurationMs, IOException exception, int errorCount) { + if (exception instanceof InvalidResponseCodeException) { + int responseCode = ((InvalidResponseCodeException) exception).responseCode; + return responseCode == 404 // HTTP 404 Not Found. + || responseCode == 410 // HTTP 410 Gone. + || responseCode == 416 // HTTP 416 Range Not Satisfiable. + ? DEFAULT_TRACK_BLACKLIST_MS + : C.TIME_UNSET; + } + return C.TIME_UNSET; + } + + /** + * Retries for any exception that is not a subclass of {@link ParserException}, {@link + * FileNotFoundException} or {@link UnexpectedLoaderException}. The retry delay is calculated as + * {@code Math.min((errorCount - 1) * 1000, 5000)}. + */ + @Override + public long getRetryDelayMsFor( + int dataType, long loadDurationMs, IOException exception, int errorCount) { + return exception instanceof ParserException + || exception instanceof FileNotFoundException + || exception instanceof UnexpectedLoaderException + ? C.TIME_UNSET + : Math.min((errorCount - 1) * 1000, 5000); + } + + /** + * See {@link #DefaultLoadErrorHandlingPolicy()} and {@link #DefaultLoadErrorHandlingPolicy(int)} + * for documentation about the behavior of this method. + */ + @Override + public int getMinimumLoadableRetryCount(int dataType) { + if (minimumLoadableRetryCount == DEFAULT_BEHAVIOR_MIN_LOADABLE_RETRY_COUNT) { + return dataType == C.DATA_TYPE_MEDIA_PROGRESSIVE_LIVE + ? DEFAULT_MIN_LOADABLE_RETRY_COUNT_PROGRESSIVE_LIVE + : DEFAULT_MIN_LOADABLE_RETRY_COUNT; + } else { + return minimumLoadableRetryCount; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DummyDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DummyDataSource.java new file mode 100644 index 0000000000..585c37cc78 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/DummyDataSource.java @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import androidx.annotation.Nullable; +import java.io.IOException; + +/** + * A dummy DataSource which provides no data. {@link #open(DataSpec)} throws {@link IOException}. + */ +public final class DummyDataSource implements DataSource { + + public static final DummyDataSource INSTANCE = new DummyDataSource(); + + /** A factory that produces {@link DummyDataSource}. */ + public static final Factory FACTORY = DummyDataSource::new; + + private DummyDataSource() {} + + @Override + public void addTransferListener(TransferListener transferListener) { + // Do nothing. + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + throw new IOException("Dummy source"); + } + + @Override + public int read(byte[] buffer, int offset, int readLength) { + throw new UnsupportedOperationException(); + } + + @Override + @Nullable + public Uri getUri() { + return null; + } + + @Override + public void close() { + // do nothing. + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/FileDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/FileDataSource.java new file mode 100644 index 0000000000..eee30e668f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/FileDataSource.java @@ -0,0 +1,171 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.net.Uri; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.EOFException; +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.RandomAccessFile; + +/** A {@link DataSource} for reading local files. */ +public final class FileDataSource extends BaseDataSource { + + /** Thrown when a {@link FileDataSource} encounters an error reading a file. */ + public static class FileDataSourceException extends IOException { + + public FileDataSourceException(IOException cause) { + super(cause); + } + + public FileDataSourceException(String message, IOException cause) { + super(message, cause); + } + } + + /** {@link DataSource.Factory} for {@link FileDataSource} instances. */ + public static final class Factory implements DataSource.Factory { + + @Nullable private TransferListener listener; + + /** + * Sets a {@link TransferListener} for {@link FileDataSource} instances created by this factory. + * + * @param listener The {@link TransferListener}. + * @return This factory. + */ + public Factory setListener(@Nullable TransferListener listener) { + this.listener = listener; + return this; + } + + @Override + public FileDataSource createDataSource() { + FileDataSource dataSource = new FileDataSource(); + if (listener != null) { + dataSource.addTransferListener(listener); + } + return dataSource; + } + } + + @Nullable private RandomAccessFile file; + @Nullable private Uri uri; + private long bytesRemaining; + private boolean opened; + + public FileDataSource() { + super(/* isNetwork= */ false); + } + + @Override + public long open(DataSpec dataSpec) throws FileDataSourceException { + try { + Uri uri = dataSpec.uri; + this.uri = uri; + + transferInitializing(dataSpec); + + this.file = openLocalFile(uri); + + file.seek(dataSpec.position); + bytesRemaining = dataSpec.length == C.LENGTH_UNSET ? file.length() - dataSpec.position + : dataSpec.length; + if (bytesRemaining < 0) { + throw new EOFException(); + } + } catch (IOException e) { + throw new FileDataSourceException(e); + } + + opened = true; + transferStarted(dataSpec); + + return bytesRemaining; + } + + private static RandomAccessFile openLocalFile(Uri uri) throws FileDataSourceException { + try { + return new RandomAccessFile(Assertions.checkNotNull(uri.getPath()), "r"); + } catch (FileNotFoundException e) { + if (!TextUtils.isEmpty(uri.getQuery()) || !TextUtils.isEmpty(uri.getFragment())) { + throw new FileDataSourceException( + String.format( + "uri has query and/or fragment, which are not supported. Did you call Uri.parse()" + + " on a string containing '?' or '#'? Use Uri.fromFile(new File(path)) to" + + " avoid this. path=%s,query=%s,fragment=%s", + uri.getPath(), uri.getQuery(), uri.getFragment()), + e); + } + throw new FileDataSourceException(e); + } + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws FileDataSourceException { + if (readLength == 0) { + return 0; + } else if (bytesRemaining == 0) { + return C.RESULT_END_OF_INPUT; + } else { + int bytesRead; + try { + bytesRead = + castNonNull(file).read(buffer, offset, (int) Math.min(bytesRemaining, readLength)); + } catch (IOException e) { + throw new FileDataSourceException(e); + } + + if (bytesRead > 0) { + bytesRemaining -= bytesRead; + bytesTransferred(bytesRead); + } + + return bytesRead; + } + } + + @Override + @Nullable + public Uri getUri() { + return uri; + } + + @Override + public void close() throws FileDataSourceException { + uri = null; + try { + if (file != null) { + file.close(); + } + } catch (IOException e) { + throw new FileDataSourceException(e); + } finally { + file = null; + if (opened) { + opened = false; + transferEnded(); + } + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/FileDataSourceFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/FileDataSourceFactory.java new file mode 100644 index 0000000000..660a38161c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/FileDataSourceFactory.java @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import androidx.annotation.Nullable; + +/** @deprecated Use {@link FileDataSource.Factory}. */ +@Deprecated +public final class FileDataSourceFactory implements DataSource.Factory { + + private final FileDataSource.Factory wrappedFactory; + + public FileDataSourceFactory() { + this(/* listener= */ null); + } + + public FileDataSourceFactory(@Nullable TransferListener listener) { + wrappedFactory = new FileDataSource.Factory().setListener(listener); + } + + @Override + public FileDataSource createDataSource() { + return wrappedFactory.createDataSource(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/HttpDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/HttpDataSource.java new file mode 100644 index 0000000000..ffac1ca893 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/HttpDataSource.java @@ -0,0 +1,379 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.text.TextUtils; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Predicate; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +/** + * An HTTP {@link DataSource}. + */ +public interface HttpDataSource extends DataSource { + + /** + * A factory for {@link HttpDataSource} instances. + */ + interface Factory extends DataSource.Factory { + + @Override + HttpDataSource createDataSource(); + + /** + * Gets the default request properties used by all {@link HttpDataSource}s created by the + * factory. Changes to the properties will be reflected in any future requests made by + * {@link HttpDataSource}s created by the factory. + * + * @return The default request properties of the factory. + */ + RequestProperties getDefaultRequestProperties(); + + /** + * Sets a default request header for {@link HttpDataSource} instances created by the factory. + * + * @deprecated Use {@link #getDefaultRequestProperties} instead. + * @param name The name of the header field. + * @param value The value of the field. + */ + @Deprecated + void setDefaultRequestProperty(String name, String value); + + /** + * Clears a default request header for {@link HttpDataSource} instances created by the factory. + * + * @deprecated Use {@link #getDefaultRequestProperties} instead. + * @param name The name of the header field. + */ + @Deprecated + void clearDefaultRequestProperty(String name); + + /** + * Clears all default request headers for all {@link HttpDataSource} instances created by the + * factory. + * + * @deprecated Use {@link #getDefaultRequestProperties} instead. + */ + @Deprecated + void clearAllDefaultRequestProperties(); + + } + + /** + * Stores HTTP request properties (aka HTTP headers) and provides methods to modify the headers + * in a thread safe way to avoid the potential of creating snapshots of an inconsistent or + * unintended state. + */ + final class RequestProperties { + + private final Map requestProperties; + private Map requestPropertiesSnapshot; + + public RequestProperties() { + requestProperties = new HashMap<>(); + } + + /** + * Sets the specified property {@code value} for the specified {@code name}. If a property for + * this name previously existed, the old value is replaced by the specified value. + * + * @param name The name of the request property. + * @param value The value of the request property. + */ + public synchronized void set(String name, String value) { + requestPropertiesSnapshot = null; + requestProperties.put(name, value); + } + + /** + * Sets the keys and values contained in the map. If a property previously existed, the old + * value is replaced by the specified value. If a property previously existed and is not in the + * map, the property is left unchanged. + * + * @param properties The request properties. + */ + public synchronized void set(Map properties) { + requestPropertiesSnapshot = null; + requestProperties.putAll(properties); + } + + /** + * Removes all properties previously existing and sets the keys and values of the map. + * + * @param properties The request properties. + */ + public synchronized void clearAndSet(Map properties) { + requestPropertiesSnapshot = null; + requestProperties.clear(); + requestProperties.putAll(properties); + } + + /** + * Removes a request property by name. + * + * @param name The name of the request property to remove. + */ + public synchronized void remove(String name) { + requestPropertiesSnapshot = null; + requestProperties.remove(name); + } + + /** + * Clears all request properties. + */ + public synchronized void clear() { + requestPropertiesSnapshot = null; + requestProperties.clear(); + } + + /** + * Gets a snapshot of the request properties. + * + * @return A snapshot of the request properties. + */ + public synchronized Map getSnapshot() { + if (requestPropertiesSnapshot == null) { + requestPropertiesSnapshot = Collections.unmodifiableMap(new HashMap<>(requestProperties)); + } + return requestPropertiesSnapshot; + } + + } + + /** + * Base implementation of {@link Factory} that sets default request properties. + */ + abstract class BaseFactory implements Factory { + + private final RequestProperties defaultRequestProperties; + + public BaseFactory() { + defaultRequestProperties = new RequestProperties(); + } + + @Override + public final HttpDataSource createDataSource() { + return createDataSourceInternal(defaultRequestProperties); + } + + @Override + public final RequestProperties getDefaultRequestProperties() { + return defaultRequestProperties; + } + + /** @deprecated Use {@link #getDefaultRequestProperties} instead. */ + @Deprecated + @Override + public final void setDefaultRequestProperty(String name, String value) { + defaultRequestProperties.set(name, value); + } + + /** @deprecated Use {@link #getDefaultRequestProperties} instead. */ + @Deprecated + @Override + public final void clearDefaultRequestProperty(String name) { + defaultRequestProperties.remove(name); + } + + /** @deprecated Use {@link #getDefaultRequestProperties} instead. */ + @Deprecated + @Override + public final void clearAllDefaultRequestProperties() { + defaultRequestProperties.clear(); + } + + /** + * Called by {@link #createDataSource()} to create a {@link HttpDataSource} instance. + * + * @param defaultRequestProperties The default {@code RequestProperties} to be used by the + * {@link HttpDataSource} instance. + * @return A {@link HttpDataSource} instance. + */ + protected abstract HttpDataSource createDataSourceInternal(RequestProperties + defaultRequestProperties); + + } + + /** A {@link Predicate} that rejects content types often used for pay-walls. */ + Predicate REJECT_PAYWALL_TYPES = + contentType -> { + contentType = Util.toLowerInvariant(contentType); + return !TextUtils.isEmpty(contentType) + && (!contentType.contains("text") || contentType.contains("text/vtt")) + && !contentType.contains("html") + && !contentType.contains("xml"); + }; + + /** + * Thrown when an error is encountered when trying to read from a {@link HttpDataSource}. + */ + class HttpDataSourceException extends IOException { + + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({TYPE_OPEN, TYPE_READ, TYPE_CLOSE}) + public @interface Type {} + + public static final int TYPE_OPEN = 1; + public static final int TYPE_READ = 2; + public static final int TYPE_CLOSE = 3; + + @Type public final int type; + + /** + * The {@link DataSpec} associated with the current connection. + */ + public final DataSpec dataSpec; + + public HttpDataSourceException(DataSpec dataSpec, @Type int type) { + super(); + this.dataSpec = dataSpec; + this.type = type; + } + + public HttpDataSourceException(String message, DataSpec dataSpec, @Type int type) { + super(message); + this.dataSpec = dataSpec; + this.type = type; + } + + public HttpDataSourceException(IOException cause, DataSpec dataSpec, @Type int type) { + super(cause); + this.dataSpec = dataSpec; + this.type = type; + } + + public HttpDataSourceException(String message, IOException cause, DataSpec dataSpec, + @Type int type) { + super(message, cause); + this.dataSpec = dataSpec; + this.type = type; + } + + } + + /** + * Thrown when the content type is invalid. + */ + final class InvalidContentTypeException extends HttpDataSourceException { + + public final String contentType; + + public InvalidContentTypeException(String contentType, DataSpec dataSpec) { + super("Invalid content type: " + contentType, dataSpec, TYPE_OPEN); + this.contentType = contentType; + } + + } + + /** + * Thrown when an attempt to open a connection results in a response code not in the 2xx range. + */ + final class InvalidResponseCodeException extends HttpDataSourceException { + + /** + * The response code that was outside of the 2xx range. + */ + public final int responseCode; + + /** The http status message. */ + @Nullable public final String responseMessage; + + /** + * An unmodifiable map of the response header fields and values. + */ + public final Map> headerFields; + + /** @deprecated Use {@link #InvalidResponseCodeException(int, String, Map, DataSpec)}. */ + @Deprecated + public InvalidResponseCodeException( + int responseCode, Map> headerFields, DataSpec dataSpec) { + this(responseCode, /* responseMessage= */ null, headerFields, dataSpec); + } + + public InvalidResponseCodeException( + int responseCode, + @Nullable String responseMessage, + Map> headerFields, + DataSpec dataSpec) { + super("Response code: " + responseCode, dataSpec, TYPE_OPEN); + this.responseCode = responseCode; + this.responseMessage = responseMessage; + this.headerFields = headerFields; + } + + } + + /** + * Opens the source to read the specified data. + * + *

Note: {@link HttpDataSource} implementations are advised to set request headers passed via + * (in order of decreasing priority) the {@code dataSpec}, {@link #setRequestProperty} and the + * default parameters set in the {@link Factory}. + */ + @Override + long open(DataSpec dataSpec) throws HttpDataSourceException; + + @Override + void close() throws HttpDataSourceException; + + @Override + int read(byte[] buffer, int offset, int readLength) throws HttpDataSourceException; + + /** + * Sets the value of a request header. The value will be used for subsequent connections + * established by the source. + * + *

Note: If the same header is set as a default parameter in the {@link Factory}, then the + * header value set with this method should be preferred when connecting with the data source. See + * {@link #open}. + * + * @param name The name of the header field. + * @param value The value of the field. + */ + void setRequestProperty(String name, String value); + + /** + * Clears the value of a request header. The change will apply to subsequent connections + * established by the source. + * + * @param name The name of the header field. + */ + void clearRequestProperty(String name); + + /** + * Clears all request headers that were set by {@link #setRequestProperty(String, String)}. + */ + void clearAllRequestProperties(); + + /** + * When the source is open, returns the HTTP response status code associated with the last {@link + * #open} call. Otherwise, returns a negative value. + */ + int getResponseCode(); + + @Override + Map> getResponseHeaders(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/LoadErrorHandlingPolicy.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/LoadErrorHandlingPolicy.java new file mode 100644 index 0000000000..03c861c5f1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/LoadErrorHandlingPolicy.java @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.Callback; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.Loadable; +import java.io.IOException; + +/** + * Defines how errors encountered by {@link Loader Loaders} are handled. + * + *

Loader clients may blacklist a resource when a load error occurs. Blacklisting works around + * load errors by loading an alternative resource. Clients do not try blacklisting when a resource + * does not have an alternative. When a resource does have valid alternatives, {@link + * #getBlacklistDurationMsFor(int, long, IOException, int)} defines whether the resource should be + * blacklisted. Blacklisting will succeed if any of the alternatives is not in the black list. + * + *

When blacklisting does not take place, {@link #getRetryDelayMsFor(int, long, IOException, + * int)} defines whether the load is retried. Errors whose load is not retried are propagated. Load + * errors whose load is retried are propagated according to {@link + * #getMinimumLoadableRetryCount(int)}. + * + *

Methods are invoked on the playback thread. + */ +public interface LoadErrorHandlingPolicy { + + /** + * Returns the number of milliseconds for which a resource associated to a provided load error + * should be blacklisted, or {@link C#TIME_UNSET} if the resource should not be blacklisted. + * + * @param dataType One of the {@link C C.DATA_TYPE_*} constants indicating the type of data to + * load. + * @param loadDurationMs The duration in milliseconds of the load from the start of the first load + * attempt up to the point at which the error occurred. + * @param exception The load error. + * @param errorCount The number of errors this load has encountered, including this one. + * @return The blacklist duration in milliseconds, or {@link C#TIME_UNSET} if the resource should + * not be blacklisted. + */ + long getBlacklistDurationMsFor( + int dataType, long loadDurationMs, IOException exception, int errorCount); + + /** + * Returns the number of milliseconds to wait before attempting the load again, or {@link + * C#TIME_UNSET} if the error is fatal and should not be retried. + * + *

{@link Loader} clients may ignore the retry delay returned by this method in order to wait + * for a specific event before retrying. However, the load is retried if and only if this method + * does not return {@link C#TIME_UNSET}. + * + * @param dataType One of the {@link C C.DATA_TYPE_*} constants indicating the type of data to + * load. + * @param loadDurationMs The duration in milliseconds of the load from the start of the first load + * attempt up to the point at which the error occurred. + * @param exception The load error. + * @param errorCount The number of errors this load has encountered, including this one. + * @return The number of milliseconds to wait before attempting the load again, or {@link + * C#TIME_UNSET} if the error is fatal and should not be retried. + */ + long getRetryDelayMsFor(int dataType, long loadDurationMs, IOException exception, int errorCount); + + /** + * Returns the minimum number of times to retry a load in the case of a load error, before + * propagating the error. + * + * @param dataType One of the {@link C C.DATA_TYPE_*} constants indicating the type of data to + * load. + * @return The minimum number of times to retry a load in the case of a load error, before + * propagating the error. + * @see Loader#startLoading(Loadable, Callback, int) + */ + int getMinimumLoadableRetryCount(int dataType); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/Loader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/Loader.java new file mode 100644 index 0000000000..0e79759b36 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/Loader.java @@ -0,0 +1,521 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.annotation.SuppressLint; +import android.os.Handler; +import android.os.Looper; +import android.os.Message; +import android.os.SystemClock; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TraceUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.concurrent.ExecutorService; + +/** + * Manages the background loading of {@link Loadable}s. + */ +public final class Loader implements LoaderErrorThrower { + + /** + * Thrown when an unexpected exception or error is encountered during loading. + */ + public static final class UnexpectedLoaderException extends IOException { + + public UnexpectedLoaderException(Throwable cause) { + super("Unexpected " + cause.getClass().getSimpleName() + ": " + cause.getMessage(), cause); + } + + } + + /** + * An object that can be loaded using a {@link Loader}. + */ + public interface Loadable { + + /** + * Cancels the load. + */ + void cancelLoad(); + + /** + * Performs the load, returning on completion or cancellation. + * + * @throws IOException If the input could not be loaded. + * @throws InterruptedException If the thread was interrupted. + */ + void load() throws IOException, InterruptedException; + + } + + /** + * A callback to be notified of {@link Loader} events. + */ + public interface Callback { + + /** + * Called when a load has completed. + * + *

Note: There is guaranteed to be a memory barrier between {@link Loadable#load()} exiting + * and this callback being called. + * + * @param loadable The loadable whose load has completed. + * @param elapsedRealtimeMs {@link SystemClock#elapsedRealtime} when the load ended. + * @param loadDurationMs The duration in milliseconds of the load since {@link #startLoading} + * was called. + */ + void onLoadCompleted(T loadable, long elapsedRealtimeMs, long loadDurationMs); + + /** + * Called when a load has been canceled. + * + *

Note: If the {@link Loader} has not been released then there is guaranteed to be a memory + * barrier between {@link Loadable#load()} exiting and this callback being called. If the {@link + * Loader} has been released then this callback may be called before {@link Loadable#load()} + * exits. + * + * @param loadable The loadable whose load has been canceled. + * @param elapsedRealtimeMs {@link SystemClock#elapsedRealtime} when the load was canceled. + * @param loadDurationMs The duration in milliseconds of the load since {@link #startLoading} + * was called up to the point at which it was canceled. + * @param released True if the load was canceled because the {@link Loader} was released. False + * otherwise. + */ + void onLoadCanceled(T loadable, long elapsedRealtimeMs, long loadDurationMs, boolean released); + + /** + * Called when a load encounters an error. + * + *

Note: There is guaranteed to be a memory barrier between {@link Loadable#load()} exiting + * and this callback being called. + * + * @param loadable The loadable whose load has encountered an error. + * @param elapsedRealtimeMs {@link SystemClock#elapsedRealtime} when the error occurred. + * @param loadDurationMs The duration in milliseconds of the load since {@link #startLoading} + * was called up to the point at which the error occurred. + * @param error The load error. + * @param errorCount The number of errors this load has encountered, including this one. + * @return The desired error handling action. One of {@link Loader#RETRY}, {@link + * Loader#RETRY_RESET_ERROR_COUNT}, {@link Loader#DONT_RETRY}, {@link + * Loader#DONT_RETRY_FATAL} or a retry action created by {@link #createRetryAction}. + */ + LoadErrorAction onLoadError( + T loadable, long elapsedRealtimeMs, long loadDurationMs, IOException error, int errorCount); + } + + /** + * A callback to be notified when a {@link Loader} has finished being released. + */ + public interface ReleaseCallback { + + /** + * Called when the {@link Loader} has finished being released. + */ + void onLoaderReleased(); + + } + + /** Types of action that can be taken in response to a load error. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + ACTION_TYPE_RETRY, + ACTION_TYPE_RETRY_AND_RESET_ERROR_COUNT, + ACTION_TYPE_DONT_RETRY, + ACTION_TYPE_DONT_RETRY_FATAL + }) + private @interface RetryActionType {} + + private static final int ACTION_TYPE_RETRY = 0; + private static final int ACTION_TYPE_RETRY_AND_RESET_ERROR_COUNT = 1; + private static final int ACTION_TYPE_DONT_RETRY = 2; + private static final int ACTION_TYPE_DONT_RETRY_FATAL = 3; + + /** Retries the load using the default delay. */ + public static final LoadErrorAction RETRY = + createRetryAction(/* resetErrorCount= */ false, C.TIME_UNSET); + /** Retries the load using the default delay and resets the error count. */ + public static final LoadErrorAction RETRY_RESET_ERROR_COUNT = + createRetryAction(/* resetErrorCount= */ true, C.TIME_UNSET); + /** Discards the failed {@link Loadable} and ignores any errors that have occurred. */ + public static final LoadErrorAction DONT_RETRY = + new LoadErrorAction(ACTION_TYPE_DONT_RETRY, C.TIME_UNSET); + /** + * Discards the failed {@link Loadable}. The next call to {@link #maybeThrowError()} will throw + * the last load error. + */ + public static final LoadErrorAction DONT_RETRY_FATAL = + new LoadErrorAction(ACTION_TYPE_DONT_RETRY_FATAL, C.TIME_UNSET); + + /** + * Action that can be taken in response to {@link Callback#onLoadError(Loadable, long, long, + * IOException, int)}. + */ + public static final class LoadErrorAction { + + private final @RetryActionType int type; + private final long retryDelayMillis; + + private LoadErrorAction(@RetryActionType int type, long retryDelayMillis) { + this.type = type; + this.retryDelayMillis = retryDelayMillis; + } + + /** Returns whether this is a retry action. */ + public boolean isRetry() { + return type == ACTION_TYPE_RETRY || type == ACTION_TYPE_RETRY_AND_RESET_ERROR_COUNT; + } + } + + private final ExecutorService downloadExecutorService; + + @Nullable private LoadTask currentTask; + @Nullable private IOException fatalError; + + /** + * @param threadName A name for the loader's thread. + */ + public Loader(String threadName) { + this.downloadExecutorService = Util.newSingleThreadExecutor(threadName); + } + + /** + * Creates a {@link LoadErrorAction} for retrying with the given parameters. + * + * @param resetErrorCount Whether the previous error count should be set to zero. + * @param retryDelayMillis The number of milliseconds to wait before retrying. + * @return A {@link LoadErrorAction} for retrying with the given parameters. + */ + public static LoadErrorAction createRetryAction(boolean resetErrorCount, long retryDelayMillis) { + return new LoadErrorAction( + resetErrorCount ? ACTION_TYPE_RETRY_AND_RESET_ERROR_COUNT : ACTION_TYPE_RETRY, + retryDelayMillis); + } + + /** + * Whether the last call to {@link #startLoading} resulted in a fatal error. Calling {@link + * #maybeThrowError()} will throw the fatal error. + */ + public boolean hasFatalError() { + return fatalError != null; + } + + /** Clears any stored fatal error. */ + public void clearFatalError() { + fatalError = null; + } + + /** + * Starts loading a {@link Loadable}. + * + *

The calling thread must be a {@link Looper} thread, which is the thread on which the {@link + * Callback} will be called. + * + * @param The type of the loadable. + * @param loadable The {@link Loadable} to load. + * @param callback A callback to be called when the load ends. + * @param defaultMinRetryCount The minimum number of times the load must be retried before {@link + * #maybeThrowError()} will propagate an error. + * @throws IllegalStateException If the calling thread does not have an associated {@link Looper}. + * @return {@link SystemClock#elapsedRealtime} when the load started. + */ + public long startLoading( + T loadable, Callback callback, int defaultMinRetryCount) { + Looper looper = Assertions.checkStateNotNull(Looper.myLooper()); + fatalError = null; + long startTimeMs = SystemClock.elapsedRealtime(); + new LoadTask<>(looper, loadable, callback, defaultMinRetryCount, startTimeMs).start(0); + return startTimeMs; + } + + /** Returns whether the loader is currently loading. */ + public boolean isLoading() { + return currentTask != null; + } + + /** + * Cancels the current load. + * + * @throws IllegalStateException If the loader is not currently loading. + */ + public void cancelLoading() { + Assertions.checkStateNotNull(currentTask).cancel(false); + } + + /** Releases the loader. This method should be called when the loader is no longer required. */ + public void release() { + release(null); + } + + /** + * Releases the loader. This method should be called when the loader is no longer required. + * + * @param callback An optional callback to be called on the loading thread once the loader has + * been released. + */ + public void release(@Nullable ReleaseCallback callback) { + if (currentTask != null) { + currentTask.cancel(true); + } + if (callback != null) { + downloadExecutorService.execute(new ReleaseTask(callback)); + } + downloadExecutorService.shutdown(); + } + + // LoaderErrorThrower implementation. + + @Override + public void maybeThrowError() throws IOException { + maybeThrowError(Integer.MIN_VALUE); + } + + @Override + public void maybeThrowError(int minRetryCount) throws IOException { + if (fatalError != null) { + throw fatalError; + } else if (currentTask != null) { + currentTask.maybeThrowError(minRetryCount == Integer.MIN_VALUE + ? currentTask.defaultMinRetryCount : minRetryCount); + } + } + + // Internal classes. + + @SuppressLint("HandlerLeak") + private final class LoadTask extends Handler implements Runnable { + + private static final String TAG = "LoadTask"; + + private static final int MSG_START = 0; + private static final int MSG_CANCEL = 1; + private static final int MSG_END_OF_SOURCE = 2; + private static final int MSG_IO_EXCEPTION = 3; + private static final int MSG_FATAL_ERROR = 4; + + public final int defaultMinRetryCount; + + private final T loadable; + private final long startTimeMs; + + @Nullable private Loader.Callback callback; + @Nullable private IOException currentError; + private int errorCount; + + @Nullable private volatile Thread executorThread; + private volatile boolean canceled; + private volatile boolean released; + + public LoadTask(Looper looper, T loadable, Loader.Callback callback, + int defaultMinRetryCount, long startTimeMs) { + super(looper); + this.loadable = loadable; + this.callback = callback; + this.defaultMinRetryCount = defaultMinRetryCount; + this.startTimeMs = startTimeMs; + } + + public void maybeThrowError(int minRetryCount) throws IOException { + if (currentError != null && errorCount > minRetryCount) { + throw currentError; + } + } + + public void start(long delayMillis) { + Assertions.checkState(currentTask == null); + currentTask = this; + if (delayMillis > 0) { + sendEmptyMessageDelayed(MSG_START, delayMillis); + } else { + execute(); + } + } + + public void cancel(boolean released) { + this.released = released; + currentError = null; + if (hasMessages(MSG_START)) { + removeMessages(MSG_START); + if (!released) { + sendEmptyMessage(MSG_CANCEL); + } + } else { + canceled = true; + loadable.cancelLoad(); + Thread executorThread = this.executorThread; + if (executorThread != null) { + executorThread.interrupt(); + } + } + if (released) { + finish(); + long nowMs = SystemClock.elapsedRealtime(); + Assertions.checkNotNull(callback) + .onLoadCanceled(loadable, nowMs, nowMs - startTimeMs, true); + // If loading, this task will be referenced from a GC root (the loading thread) until + // cancellation completes. The time taken for cancellation to complete depends on the + // implementation of the Loadable that the task is loading. We null the callback reference + // here so that it doesn't prevent garbage collection whilst cancellation is ongoing. + callback = null; + } + } + + @Override + public void run() { + try { + executorThread = Thread.currentThread(); + if (!canceled) { + TraceUtil.beginSection("load:" + loadable.getClass().getSimpleName()); + try { + loadable.load(); + } finally { + TraceUtil.endSection(); + } + } + if (!released) { + sendEmptyMessage(MSG_END_OF_SOURCE); + } + } catch (IOException e) { + if (!released) { + obtainMessage(MSG_IO_EXCEPTION, e).sendToTarget(); + } + } catch (InterruptedException e) { + // The load was canceled. + Assertions.checkState(canceled); + if (!released) { + sendEmptyMessage(MSG_END_OF_SOURCE); + } + } catch (Exception e) { + // This should never happen, but handle it anyway. + Log.e(TAG, "Unexpected exception loading stream", e); + if (!released) { + obtainMessage(MSG_IO_EXCEPTION, new UnexpectedLoaderException(e)).sendToTarget(); + } + } catch (OutOfMemoryError e) { + // This can occur if a stream is malformed in a way that causes an extractor to think it + // needs to allocate a large amount of memory. We don't want the process to die in this + // case, but we do want the playback to fail. + Log.e(TAG, "OutOfMemory error loading stream", e); + if (!released) { + obtainMessage(MSG_IO_EXCEPTION, new UnexpectedLoaderException(e)).sendToTarget(); + } + } catch (Error e) { + // We'd hope that the platform would kill the process if an Error is thrown here, but the + // executor may catch the error (b/20616433). Throw it here, but also pass and throw it from + // the handler thread so that the process dies even if the executor behaves in this way. + Log.e(TAG, "Unexpected error loading stream", e); + if (!released) { + obtainMessage(MSG_FATAL_ERROR, e).sendToTarget(); + } + throw e; + } + } + + @Override + public void handleMessage(Message msg) { + if (released) { + return; + } + if (msg.what == MSG_START) { + execute(); + return; + } + if (msg.what == MSG_FATAL_ERROR) { + throw (Error) msg.obj; + } + finish(); + long nowMs = SystemClock.elapsedRealtime(); + long durationMs = nowMs - startTimeMs; + Loader.Callback callback = Assertions.checkNotNull(this.callback); + if (canceled) { + callback.onLoadCanceled(loadable, nowMs, durationMs, false); + return; + } + switch (msg.what) { + case MSG_CANCEL: + callback.onLoadCanceled(loadable, nowMs, durationMs, false); + break; + case MSG_END_OF_SOURCE: + try { + callback.onLoadCompleted(loadable, nowMs, durationMs); + } catch (RuntimeException e) { + // This should never happen, but handle it anyway. + Log.e(TAG, "Unexpected exception handling load completed", e); + fatalError = new UnexpectedLoaderException(e); + } + break; + case MSG_IO_EXCEPTION: + currentError = (IOException) msg.obj; + errorCount++; + LoadErrorAction action = + callback.onLoadError(loadable, nowMs, durationMs, currentError, errorCount); + if (action.type == ACTION_TYPE_DONT_RETRY_FATAL) { + fatalError = currentError; + } else if (action.type != ACTION_TYPE_DONT_RETRY) { + if (action.type == ACTION_TYPE_RETRY_AND_RESET_ERROR_COUNT) { + errorCount = 1; + } + start( + action.retryDelayMillis != C.TIME_UNSET + ? action.retryDelayMillis + : getRetryDelayMillis()); + } + break; + default: + // Never happens. + break; + } + } + + private void execute() { + currentError = null; + downloadExecutorService.execute(Assertions.checkNotNull(currentTask)); + } + + private void finish() { + currentTask = null; + } + + private long getRetryDelayMillis() { + return Math.min((errorCount - 1) * 1000, 5000); + } + + } + + private static final class ReleaseTask implements Runnable { + + private final ReleaseCallback callback; + + public ReleaseTask(ReleaseCallback callback) { + this.callback = callback; + } + + @Override + public void run() { + callback.onLoaderReleased(); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/LoaderErrorThrower.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/LoaderErrorThrower.java new file mode 100644 index 0000000000..9a67f20b84 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/LoaderErrorThrower.java @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.Loadable; +import java.io.IOException; + +/** + * Conditionally throws errors affecting a {@link Loader}. + */ +public interface LoaderErrorThrower { + + /** + * Throws a fatal error, or a non-fatal error if loading is currently backed off and the current + * {@link Loadable} has incurred a number of errors greater than the {@link Loader}s default + * minimum number of retries. Else does nothing. + * + * @throws IOException The error. + */ + void maybeThrowError() throws IOException; + + /** + * Throws a fatal error, or a non-fatal error if loading is currently backed off and the current + * {@link Loadable} has incurred a number of errors greater than the specified minimum number + * of retries. Else does nothing. + * + * @param minRetryCount A minimum retry count that must be exceeded for a non-fatal error to be + * thrown. Should be non-negative. + * @throws IOException The error. + */ + void maybeThrowError(int minRetryCount) throws IOException; + + /** + * A {@link LoaderErrorThrower} that never throws. + */ + final class Dummy implements LoaderErrorThrower { + + @Override + public void maybeThrowError() throws IOException { + // Do nothing. + } + + @Override + public void maybeThrowError(int minRetryCount) throws IOException { + // Do nothing. + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ParsingLoadable.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ParsingLoadable.java new file mode 100644 index 0000000000..3e4192b651 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ParsingLoadable.java @@ -0,0 +1,177 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.Loader.Loadable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.IOException; +import java.io.InputStream; +import java.util.List; +import java.util.Map; + +/** + * A {@link Loadable} for objects that can be parsed from binary data using a {@link Parser}. + * + * @param The type of the object being loaded. + */ +public final class ParsingLoadable implements Loadable { + + /** + * Parses an object from loaded data. + */ + public interface Parser { + + /** + * Parses an object from a response. + * + * @param uri The source {@link Uri} of the response, after any redirection. + * @param inputStream An {@link InputStream} from which the response data can be read. + * @return The parsed object. + * @throws ParserException If an error occurs parsing the data. + * @throws IOException If an error occurs reading data from the stream. + */ + T parse(Uri uri, InputStream inputStream) throws IOException; + + } + + /** + * Loads a single parsable object. + * + * @param dataSource The {@link DataSource} through which the object should be read. + * @param parser The {@link Parser} to parse the object from the response. + * @param uri The {@link Uri} of the object to read. + * @param type The type of the data. One of the {@link C}{@code DATA_TYPE_*} constants. + * @return The parsed object + * @throws IOException Thrown if there is an error while loading or parsing. + */ + public static T load(DataSource dataSource, Parser parser, Uri uri, int type) + throws IOException { + ParsingLoadable loadable = new ParsingLoadable<>(dataSource, uri, type, parser); + loadable.load(); + return Assertions.checkNotNull(loadable.getResult()); + } + + /** + * Loads a single parsable object. + * + * @param dataSource The {@link DataSource} through which the object should be read. + * @param parser The {@link Parser} to parse the object from the response. + * @param dataSpec The {@link DataSpec} of the object to read. + * @param type The type of the data. One of the {@link C}{@code DATA_TYPE_*} constants. + * @return The parsed object + * @throws IOException Thrown if there is an error while loading or parsing. + */ + public static T load( + DataSource dataSource, Parser parser, DataSpec dataSpec, int type) + throws IOException { + ParsingLoadable loadable = new ParsingLoadable<>(dataSource, dataSpec, type, parser); + loadable.load(); + return Assertions.checkNotNull(loadable.getResult()); + } + + /** + * The {@link DataSpec} that defines the data to be loaded. + */ + public final DataSpec dataSpec; + /** + * The type of the data. One of the {@code DATA_TYPE_*} constants defined in {@link C}. For + * reporting only. + */ + public final int type; + + private final StatsDataSource dataSource; + private final Parser parser; + + private volatile @Nullable T result; + + /** + * @param dataSource A {@link DataSource} to use when loading the data. + * @param uri The {@link Uri} from which the object should be loaded. + * @param type See {@link #type}. + * @param parser Parses the object from the response. + */ + public ParsingLoadable(DataSource dataSource, Uri uri, int type, Parser parser) { + this(dataSource, new DataSpec(uri, DataSpec.FLAG_ALLOW_GZIP), type, parser); + } + + /** + * @param dataSource A {@link DataSource} to use when loading the data. + * @param dataSpec The {@link DataSpec} from which the object should be loaded. + * @param type See {@link #type}. + * @param parser Parses the object from the response. + */ + public ParsingLoadable(DataSource dataSource, DataSpec dataSpec, int type, + Parser parser) { + this.dataSource = new StatsDataSource(dataSource); + this.dataSpec = dataSpec; + this.type = type; + this.parser = parser; + } + + /** Returns the loaded object, or null if an object has not been loaded. */ + public final @Nullable T getResult() { + return result; + } + + /** + * Returns the number of bytes loaded. In the case that the network response was compressed, the + * value returned is the size of the data after decompression. Must only be called after + * the load completed, failed, or was canceled. + */ + public long bytesLoaded() { + return dataSource.getBytesRead(); + } + + /** + * Returns the {@link Uri} from which data was read. If redirection occurred, this is the + * redirected uri. Must only be called after the load completed, failed, or was canceled. + */ + public Uri getUri() { + return dataSource.getLastOpenedUri(); + } + + /** + * Returns the response headers associated with the load. Must only be called after the load + * completed, failed, or was canceled. + */ + public Map> getResponseHeaders() { + return dataSource.getLastResponseHeaders(); + } + + @Override + public final void cancelLoad() { + // Do nothing. + } + + @Override + public final void load() throws IOException { + // We always load from the beginning, so reset bytesRead to 0. + dataSource.resetBytesRead(); + DataSourceInputStream inputStream = new DataSourceInputStream(dataSource, dataSpec); + try { + inputStream.open(); + Uri dataSourceUri = Assertions.checkNotNull(dataSource.getUri()); + result = parser.parse(dataSourceUri, inputStream); + } finally { + Util.closeQuietly(inputStream); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/PriorityDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/PriorityDataSource.java new file mode 100644 index 0000000000..18a7fb6238 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/PriorityDataSource.java @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.PriorityTaskManager; +import java.io.IOException; +import java.util.List; +import java.util.Map; + +/** + * A {@link DataSource} that can be used as part of a task registered with a + * {@link PriorityTaskManager}. + *

+ * Calls to {@link #open(DataSpec)} and {@link #read(byte[], int, int)} are allowed to proceed only + * if there are no higher priority tasks registered to the {@link PriorityTaskManager}. If there + * exists a higher priority task then {@link PriorityTaskManager.PriorityTooLowException} is thrown. + *

+ * Instances of this class are intended to be used as parts of (possibly larger) tasks that are + * registered with the {@link PriorityTaskManager}, and hence do not register as tasks + * themselves. + */ +public final class PriorityDataSource implements DataSource { + + private final DataSource upstream; + private final PriorityTaskManager priorityTaskManager; + private final int priority; + + /** + * @param upstream The upstream {@link DataSource}. + * @param priorityTaskManager The priority manager to which the task is registered. + * @param priority The priority of the task. + */ + public PriorityDataSource(DataSource upstream, PriorityTaskManager priorityTaskManager, + int priority) { + this.upstream = Assertions.checkNotNull(upstream); + this.priorityTaskManager = Assertions.checkNotNull(priorityTaskManager); + this.priority = priority; + } + + @Override + public void addTransferListener(TransferListener transferListener) { + upstream.addTransferListener(transferListener); + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + priorityTaskManager.proceedOrThrow(priority); + return upstream.open(dataSpec); + } + + @Override + public int read(byte[] buffer, int offset, int max) throws IOException { + priorityTaskManager.proceedOrThrow(priority); + return upstream.read(buffer, offset, max); + } + + @Override + @Nullable + public Uri getUri() { + return upstream.getUri(); + } + + @Override + public Map> getResponseHeaders() { + return upstream.getResponseHeaders(); + } + + @Override + public void close() throws IOException { + upstream.close(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/PriorityDataSourceFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/PriorityDataSourceFactory.java new file mode 100644 index 0000000000..cf9a89f51d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/PriorityDataSourceFactory.java @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource.Factory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.PriorityTaskManager; + +/** + * A {@link DataSource.Factory} that produces {@link PriorityDataSource} instances. + */ +public final class PriorityDataSourceFactory implements Factory { + + private final Factory upstreamFactory; + private final PriorityTaskManager priorityTaskManager; + private final int priority; + + /** + * @param upstreamFactory A {@link DataSource.Factory} to be used to create an upstream {@link + * DataSource} for {@link PriorityDataSource}. + * @param priorityTaskManager The priority manager to which PriorityDataSource task is registered. + * @param priority The priority of PriorityDataSource task. + */ + public PriorityDataSourceFactory(Factory upstreamFactory, PriorityTaskManager priorityTaskManager, + int priority) { + this.upstreamFactory = upstreamFactory; + this.priorityTaskManager = priorityTaskManager; + this.priority = priority; + } + + @Override + public PriorityDataSource createDataSource() { + return new PriorityDataSource(upstreamFactory.createDataSource(), priorityTaskManager, + priority); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/RawResourceDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/RawResourceDataSource.java new file mode 100644 index 0000000000..ec5263d8ac --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/RawResourceDataSource.java @@ -0,0 +1,199 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.content.Context; +import android.content.res.AssetFileDescriptor; +import android.content.res.Resources; +import android.net.Uri; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.EOFException; +import java.io.FileInputStream; +import java.io.IOException; +import java.io.InputStream; + +/** + * A {@link DataSource} for reading a raw resource inside the APK. + * + *

URIs supported by this source are of the form {@code rawresource:///rawResourceId}, where + * rawResourceId is the integer identifier of a raw resource. {@link #buildRawResourceUri(int)} can + * be used to build {@link Uri}s in this format. + */ +public final class RawResourceDataSource extends BaseDataSource { + + /** + * Thrown when an {@link IOException} is encountered reading from a raw resource. + */ + public static class RawResourceDataSourceException extends IOException { + public RawResourceDataSourceException(String message) { + super(message); + } + + public RawResourceDataSourceException(IOException e) { + super(e); + } + } + + /** + * Builds a {@link Uri} for the specified raw resource identifier. + * + * @param rawResourceId A raw resource identifier (i.e. a constant defined in {@code R.raw}). + * @return The corresponding {@link Uri}. + */ + public static Uri buildRawResourceUri(int rawResourceId) { + return Uri.parse(RAW_RESOURCE_SCHEME + ":///" + rawResourceId); + } + + /** The scheme part of a raw resource URI. */ + public static final String RAW_RESOURCE_SCHEME = "rawresource"; + + private final Resources resources; + + @Nullable private Uri uri; + @Nullable private AssetFileDescriptor assetFileDescriptor; + @Nullable private InputStream inputStream; + private long bytesRemaining; + private boolean opened; + + /** + * @param context A context. + */ + public RawResourceDataSource(Context context) { + super(/* isNetwork= */ false); + this.resources = context.getResources(); + } + + @Override + public long open(DataSpec dataSpec) throws RawResourceDataSourceException { + try { + Uri uri = dataSpec.uri; + this.uri = uri; + if (!TextUtils.equals(RAW_RESOURCE_SCHEME, uri.getScheme())) { + throw new RawResourceDataSourceException("URI must use scheme " + RAW_RESOURCE_SCHEME); + } + + int resourceId; + try { + resourceId = Integer.parseInt(Assertions.checkNotNull(uri.getLastPathSegment())); + } catch (NumberFormatException e) { + throw new RawResourceDataSourceException("Resource identifier must be an integer."); + } + + transferInitializing(dataSpec); + AssetFileDescriptor assetFileDescriptor = resources.openRawResourceFd(resourceId); + this.assetFileDescriptor = assetFileDescriptor; + if (assetFileDescriptor == null) { + throw new RawResourceDataSourceException("Resource is compressed: " + uri); + } + FileInputStream inputStream = new FileInputStream(assetFileDescriptor.getFileDescriptor()); + this.inputStream = inputStream; + + inputStream.skip(assetFileDescriptor.getStartOffset()); + long skipped = inputStream.skip(dataSpec.position); + if (skipped < dataSpec.position) { + // We expect the skip to be satisfied in full. If it isn't then we're probably trying to + // skip beyond the end of the data. + throw new EOFException(); + } + if (dataSpec.length != C.LENGTH_UNSET) { + bytesRemaining = dataSpec.length; + } else { + long assetFileDescriptorLength = assetFileDescriptor.getLength(); + // If the length is UNKNOWN_LENGTH then the asset extends to the end of the file. + bytesRemaining = assetFileDescriptorLength == AssetFileDescriptor.UNKNOWN_LENGTH + ? C.LENGTH_UNSET : (assetFileDescriptorLength - dataSpec.position); + } + } catch (IOException e) { + throw new RawResourceDataSourceException(e); + } + + opened = true; + transferStarted(dataSpec); + + return bytesRemaining; + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws RawResourceDataSourceException { + if (readLength == 0) { + return 0; + } else if (bytesRemaining == 0) { + return C.RESULT_END_OF_INPUT; + } + + int bytesRead; + try { + int bytesToRead = bytesRemaining == C.LENGTH_UNSET ? readLength + : (int) Math.min(bytesRemaining, readLength); + bytesRead = castNonNull(inputStream).read(buffer, offset, bytesToRead); + } catch (IOException e) { + throw new RawResourceDataSourceException(e); + } + + if (bytesRead == -1) { + if (bytesRemaining != C.LENGTH_UNSET) { + // End of stream reached having not read sufficient data. + throw new RawResourceDataSourceException(new EOFException()); + } + return C.RESULT_END_OF_INPUT; + } + if (bytesRemaining != C.LENGTH_UNSET) { + bytesRemaining -= bytesRead; + } + bytesTransferred(bytesRead); + return bytesRead; + } + + @Override + @Nullable + public Uri getUri() { + return uri; + } + + @SuppressWarnings("Finally") + @Override + public void close() throws RawResourceDataSourceException { + uri = null; + try { + if (inputStream != null) { + inputStream.close(); + } + } catch (IOException e) { + throw new RawResourceDataSourceException(e); + } finally { + inputStream = null; + try { + if (assetFileDescriptor != null) { + assetFileDescriptor.close(); + } + } catch (IOException e) { + throw new RawResourceDataSourceException(e); + } finally { + assetFileDescriptor = null; + if (opened) { + opened = false; + transferEnded(); + } + } + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ResolvingDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ResolvingDataSource.java new file mode 100644 index 0000000000..80046e1757 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/ResolvingDataSource.java @@ -0,0 +1,132 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import androidx.annotation.Nullable; +import java.io.IOException; +import java.util.List; +import java.util.Map; + +/** {@link DataSource} wrapper allowing just-in-time resolution of {@link DataSpec DataSpecs}. */ +public final class ResolvingDataSource implements DataSource { + + /** Resolves {@link DataSpec DataSpecs}. */ + public interface Resolver { + + /** + * Resolves a {@link DataSpec} before forwarding it to the wrapped {@link DataSource}. This + * method is allowed to block until the {@link DataSpec} has been resolved. + * + *

Note that this method is called for every new connection, so caching of results is + * recommended, especially if network operations are involved. + * + * @param dataSpec The original {@link DataSpec}. + * @return The resolved {@link DataSpec}. + * @throws IOException If an {@link IOException} occurred while resolving the {@link DataSpec}. + */ + DataSpec resolveDataSpec(DataSpec dataSpec) throws IOException; + + /** + * Resolves a URI reported by {@link DataSource#getUri()} for event reporting and caching + * purposes. + * + *

Implementations do not need to overwrite this method unless they want to change the + * reported URI. + * + *

This method is not allowed to block. + * + * @param uri The URI as reported by {@link DataSource#getUri()}. + * @return The resolved URI used for event reporting and caching. + */ + default Uri resolveReportedUri(Uri uri) { + return uri; + } + } + + /** {@link DataSource.Factory} for {@link ResolvingDataSource} instances. */ + public static final class Factory implements DataSource.Factory { + + private final DataSource.Factory upstreamFactory; + private final Resolver resolver; + + /** + * @param upstreamFactory The wrapped {@link DataSource.Factory} for handling resolved {@link + * DataSpec DataSpecs}. + * @param resolver The {@link Resolver} to resolve the {@link DataSpec DataSpecs}. + */ + public Factory(DataSource.Factory upstreamFactory, Resolver resolver) { + this.upstreamFactory = upstreamFactory; + this.resolver = resolver; + } + + @Override + public ResolvingDataSource createDataSource() { + return new ResolvingDataSource(upstreamFactory.createDataSource(), resolver); + } + } + + private final DataSource upstreamDataSource; + private final Resolver resolver; + + private boolean upstreamOpened; + + /** + * @param upstreamDataSource The wrapped {@link DataSource}. + * @param resolver The {@link Resolver} to resolve the {@link DataSpec DataSpecs}. + */ + public ResolvingDataSource(DataSource upstreamDataSource, Resolver resolver) { + this.upstreamDataSource = upstreamDataSource; + this.resolver = resolver; + } + + @Override + public void addTransferListener(TransferListener transferListener) { + upstreamDataSource.addTransferListener(transferListener); + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + DataSpec resolvedDataSpec = resolver.resolveDataSpec(dataSpec); + upstreamOpened = true; + return upstreamDataSource.open(resolvedDataSpec); + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws IOException { + return upstreamDataSource.read(buffer, offset, readLength); + } + + @Nullable + @Override + public Uri getUri() { + Uri reportedUri = upstreamDataSource.getUri(); + return reportedUri == null ? null : resolver.resolveReportedUri(reportedUri); + } + + @Override + public Map> getResponseHeaders() { + return upstreamDataSource.getResponseHeaders(); + } + + @Override + public void close() throws IOException { + if (upstreamOpened) { + upstreamOpened = false; + upstreamDataSource.close(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/StatsDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/StatsDataSource.java new file mode 100644 index 0000000000..e2a179cc9d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/StatsDataSource.java @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.util.Collections; +import java.util.List; +import java.util.Map; + +/** + * {@link DataSource} wrapper which keeps track of bytes transferred, redirected uris, and response + * headers. + */ +public final class StatsDataSource implements DataSource { + + private final DataSource dataSource; + + private long bytesRead; + private Uri lastOpenedUri; + private Map> lastResponseHeaders; + + /** + * Creates the stats data source. + * + * @param dataSource The wrapped {@link DataSource}. + */ + public StatsDataSource(DataSource dataSource) { + this.dataSource = Assertions.checkNotNull(dataSource); + lastOpenedUri = Uri.EMPTY; + lastResponseHeaders = Collections.emptyMap(); + } + + /** Resets the number of bytes read as returned from {@link #getBytesRead()} to zero. */ + public void resetBytesRead() { + bytesRead = 0; + } + + /** Returns the total number of bytes that have been read from the data source. */ + public long getBytesRead() { + return bytesRead; + } + + /** + * Returns the {@link Uri} associated with the last {@link #open(DataSpec)} call. If redirection + * occurred, this is the redirected uri. + */ + public Uri getLastOpenedUri() { + return lastOpenedUri; + } + + /** Returns the response headers associated with the last {@link #open(DataSpec)} call. */ + public Map> getLastResponseHeaders() { + return lastResponseHeaders; + } + + @Override + public void addTransferListener(TransferListener transferListener) { + dataSource.addTransferListener(transferListener); + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + // Reassign defaults in case dataSource.open throws an exception. + lastOpenedUri = dataSpec.uri; + lastResponseHeaders = Collections.emptyMap(); + long availableBytes = dataSource.open(dataSpec); + lastOpenedUri = Assertions.checkNotNull(getUri()); + lastResponseHeaders = getResponseHeaders(); + return availableBytes; + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws IOException { + int bytesRead = dataSource.read(buffer, offset, readLength); + if (bytesRead != C.RESULT_END_OF_INPUT) { + this.bytesRead += bytesRead; + } + return bytesRead; + } + + @Override + @Nullable + public Uri getUri() { + return dataSource.getUri(); + } + + @Override + public Map> getResponseHeaders() { + return dataSource.getResponseHeaders(); + } + + @Override + public void close() throws IOException { + dataSource.close(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/TeeDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/TeeDataSource.java new file mode 100644 index 0000000000..c6063b916f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/TeeDataSource.java @@ -0,0 +1,105 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.util.List; +import java.util.Map; + +/** + * Tees data into a {@link DataSink} as the data is read. + */ +public final class TeeDataSource implements DataSource { + + private final DataSource upstream; + private final DataSink dataSink; + + private boolean dataSinkNeedsClosing; + private long bytesRemaining; + + /** + * @param upstream The upstream {@link DataSource}. + * @param dataSink The {@link DataSink} into which data is written. + */ + public TeeDataSource(DataSource upstream, DataSink dataSink) { + this.upstream = Assertions.checkNotNull(upstream); + this.dataSink = Assertions.checkNotNull(dataSink); + } + + @Override + public void addTransferListener(TransferListener transferListener) { + upstream.addTransferListener(transferListener); + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + bytesRemaining = upstream.open(dataSpec); + if (bytesRemaining == 0) { + return 0; + } + if (dataSpec.length == C.LENGTH_UNSET && bytesRemaining != C.LENGTH_UNSET) { + // Reconstruct dataSpec in order to provide the resolved length to the sink. + dataSpec = dataSpec.subrange(0, bytesRemaining); + } + dataSinkNeedsClosing = true; + dataSink.open(dataSpec); + return bytesRemaining; + } + + @Override + public int read(byte[] buffer, int offset, int max) throws IOException { + if (bytesRemaining == 0) { + return C.RESULT_END_OF_INPUT; + } + int bytesRead = upstream.read(buffer, offset, max); + if (bytesRead > 0) { + // TODO: Consider continuing even if writes to the sink fail. + dataSink.write(buffer, offset, bytesRead); + if (bytesRemaining != C.LENGTH_UNSET) { + bytesRemaining -= bytesRead; + } + } + return bytesRead; + } + + @Override + @Nullable + public Uri getUri() { + return upstream.getUri(); + } + + @Override + public Map> getResponseHeaders() { + return upstream.getResponseHeaders(); + } + + @Override + public void close() throws IOException { + try { + upstream.close(); + } finally { + if (dataSinkNeedsClosing) { + dataSinkNeedsClosing = false; + dataSink.close(); + } + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/TransferListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/TransferListener.java new file mode 100644 index 0000000000..f6574120ff --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/TransferListener.java @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +/** + * A listener of data transfer events. + * + *

A transfer usually progresses through multiple steps: + * + *

    + *
  1. Initializing the underlying resource (e.g. opening a HTTP connection). {@link + * #onTransferInitializing(DataSource, DataSpec, boolean)} is called before the initialization + * starts. + *
  2. Starting the transfer after successfully initializing the resource. {@link + * #onTransferStart(DataSource, DataSpec, boolean)} is called. Note that this only happens if + * the initialization was successful. + *
  3. Transferring data. {@link #onBytesTransferred(DataSource, DataSpec, boolean, int)} is + * called frequently during the transfer to indicate progress. + *
  4. Closing the transfer and the underlying resource. {@link #onTransferEnd(DataSource, + * DataSpec, boolean)} is called. Note that each {@link #onTransferStart(DataSource, DataSpec, + * boolean)} will have exactly one corresponding call to {@link #onTransferEnd(DataSource, + * DataSpec, boolean)}. + *
+ */ +public interface TransferListener { + + /** + * Called when a transfer is being initialized. + * + * @param source The source performing the transfer. + * @param dataSpec Describes the data for which the transfer is initialized. + * @param isNetwork Whether the data is transferred through a network. + */ + void onTransferInitializing(DataSource source, DataSpec dataSpec, boolean isNetwork); + + /** + * Called when a transfer starts. + * + * @param source The source performing the transfer. + * @param dataSpec Describes the data being transferred. + * @param isNetwork Whether the data is transferred through a network. + */ + void onTransferStart(DataSource source, DataSpec dataSpec, boolean isNetwork); + + /** + * Called incrementally during a transfer. + * + * @param source The source performing the transfer. + * @param dataSpec Describes the data being transferred. + * @param isNetwork Whether the data is transferred through a network. + * @param bytesTransferred The number of bytes transferred since the previous call to this method + */ + void onBytesTransferred( + DataSource source, DataSpec dataSpec, boolean isNetwork, int bytesTransferred); + + /** + * Called when a transfer ends. + * + * @param source The source performing the transfer. + * @param dataSpec Describes the data being transferred. + * @param isNetwork Whether the data is transferred through a network. + */ + void onTransferEnd(DataSource source, DataSpec dataSpec, boolean isNetwork); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/UdpDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/UdpDataSource.java new file mode 100644 index 0000000000..8e9b44563c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/UdpDataSource.java @@ -0,0 +1,176 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.IOException; +import java.net.DatagramPacket; +import java.net.DatagramSocket; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.net.MulticastSocket; +import java.net.SocketException; + +/** A UDP {@link DataSource}. */ +public final class UdpDataSource extends BaseDataSource { + + /** + * Thrown when an error is encountered when trying to read from a {@link UdpDataSource}. + */ + public static final class UdpDataSourceException extends IOException { + + public UdpDataSourceException(IOException cause) { + super(cause); + } + + } + + /** + * The default maximum datagram packet size, in bytes. + */ + public static final int DEFAULT_MAX_PACKET_SIZE = 2000; + + /** The default socket timeout, in milliseconds. */ + public static final int DEFAULT_SOCKET_TIMEOUT_MILLIS = 8 * 1000; + + private final int socketTimeoutMillis; + private final byte[] packetBuffer; + private final DatagramPacket packet; + + @Nullable private Uri uri; + @Nullable private DatagramSocket socket; + @Nullable private MulticastSocket multicastSocket; + @Nullable private InetAddress address; + @Nullable private InetSocketAddress socketAddress; + private boolean opened; + + private int packetRemaining; + + public UdpDataSource() { + this(DEFAULT_MAX_PACKET_SIZE); + } + + /** + * Constructs a new instance. + * + * @param maxPacketSize The maximum datagram packet size, in bytes. + */ + public UdpDataSource(int maxPacketSize) { + this(maxPacketSize, DEFAULT_SOCKET_TIMEOUT_MILLIS); + } + + /** + * Constructs a new instance. + * + * @param maxPacketSize The maximum datagram packet size, in bytes. + * @param socketTimeoutMillis The socket timeout in milliseconds. A timeout of zero is interpreted + * as an infinite timeout. + */ + public UdpDataSource(int maxPacketSize, int socketTimeoutMillis) { + super(/* isNetwork= */ true); + this.socketTimeoutMillis = socketTimeoutMillis; + packetBuffer = new byte[maxPacketSize]; + packet = new DatagramPacket(packetBuffer, 0, maxPacketSize); + } + + @Override + public long open(DataSpec dataSpec) throws UdpDataSourceException { + uri = dataSpec.uri; + String host = uri.getHost(); + int port = uri.getPort(); + transferInitializing(dataSpec); + try { + address = InetAddress.getByName(host); + socketAddress = new InetSocketAddress(address, port); + if (address.isMulticastAddress()) { + multicastSocket = new MulticastSocket(socketAddress); + multicastSocket.joinGroup(address); + socket = multicastSocket; + } else { + socket = new DatagramSocket(socketAddress); + } + } catch (IOException e) { + throw new UdpDataSourceException(e); + } + + try { + socket.setSoTimeout(socketTimeoutMillis); + } catch (SocketException e) { + throw new UdpDataSourceException(e); + } + + opened = true; + transferStarted(dataSpec); + return C.LENGTH_UNSET; + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws UdpDataSourceException { + if (readLength == 0) { + return 0; + } + + if (packetRemaining == 0) { + // We've read all of the data from the current packet. Get another. + try { + socket.receive(packet); + } catch (IOException e) { + throw new UdpDataSourceException(e); + } + packetRemaining = packet.getLength(); + bytesTransferred(packetRemaining); + } + + int packetOffset = packet.getLength() - packetRemaining; + int bytesToRead = Math.min(packetRemaining, readLength); + System.arraycopy(packetBuffer, packetOffset, buffer, offset, bytesToRead); + packetRemaining -= bytesToRead; + return bytesToRead; + } + + @Override + @Nullable + public Uri getUri() { + return uri; + } + + @Override + public void close() { + uri = null; + if (multicastSocket != null) { + try { + multicastSocket.leaveGroup(address); + } catch (IOException e) { + // Do nothing. + } + multicastSocket = null; + } + if (socket != null) { + socket.close(); + socket = null; + } + address = null; + socketAddress = null; + packetRemaining = 0; + if (opened) { + opened = false; + transferEnded(); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/Cache.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/Cache.java new file mode 100644 index 0000000000..cb90d95bb4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/Cache.java @@ -0,0 +1,286 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import androidx.annotation.Nullable; +import androidx.annotation.WorkerThread; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.File; +import java.io.IOException; +import java.util.NavigableSet; +import java.util.Set; + +/** + * An interface for cache. + */ +public interface Cache { + + /** + * Listener of {@link Cache} events. + */ + interface Listener { + + /** + * Called when a {@link CacheSpan} is added to the cache. + * + * @param cache The source of the event. + * @param span The added {@link CacheSpan}. + */ + void onSpanAdded(Cache cache, CacheSpan span); + + /** + * Called when a {@link CacheSpan} is removed from the cache. + * + * @param cache The source of the event. + * @param span The removed {@link CacheSpan}. + */ + void onSpanRemoved(Cache cache, CacheSpan span); + + /** + * Called when an existing {@link CacheSpan} is touched, causing it to be replaced. The new + * {@link CacheSpan} is guaranteed to represent the same data as the one it replaces, however + * {@link CacheSpan#file} and {@link CacheSpan#lastTouchTimestamp} may have changed. + * + *

Note that for span replacement, {@link #onSpanAdded(Cache, CacheSpan)} and {@link + * #onSpanRemoved(Cache, CacheSpan)} are not called in addition to this method. + * + * @param cache The source of the event. + * @param oldSpan The old {@link CacheSpan}, which has been removed from the cache. + * @param newSpan The new {@link CacheSpan}, which has been added to the cache. + */ + void onSpanTouched(Cache cache, CacheSpan oldSpan, CacheSpan newSpan); + } + + /** + * Thrown when an error is encountered when writing data. + */ + class CacheException extends IOException { + + public CacheException(String message) { + super(message); + } + + public CacheException(Throwable cause) { + super(cause); + } + + public CacheException(String message, Throwable cause) { + super(message, cause); + } + } + + /** + * Returned by {@link #getUid()} if initialization failed before the unique identifier was read or + * generated. + */ + long UID_UNSET = -1; + + /** + * Returns a non-negative unique identifier for the cache, or {@link #UID_UNSET} if initialization + * failed before the unique identifier was determined. + * + *

Implementations are expected to generate and store the unique identifier alongside the + * cached content. If the location of the cache is deleted or swapped, it is expected that a new + * unique identifier will be generated when the cache is recreated. + */ + long getUid(); + + /** + * Releases the cache. This method must be called when the cache is no longer required. The cache + * must not be used after calling this method. + * + *

This method may be slow and shouldn't normally be called on the main thread. + */ + @WorkerThread + void release(); + + /** + * Registers a listener to listen for changes to a given key. + * + *

No guarantees are made about the thread or threads on which the listener is called, but it + * is guaranteed that listener methods will be called in a serial fashion (i.e. one at a time) and + * in the same order as events occurred. + * + * @param key The key to listen to. + * @param listener The listener to add. + * @return The current spans for the key. + */ + NavigableSet addListener(String key, Listener listener); + + /** + * Unregisters a listener. + * + * @param key The key to stop listening to. + * @param listener The listener to remove. + */ + void removeListener(String key, Listener listener); + + /** + * Returns the cached spans for a given cache key. + * + * @param key The key for which spans should be returned. + * @return The spans for the key. + */ + NavigableSet getCachedSpans(String key); + + /** + * Returns all keys in the cache. + * + * @return All the keys in the cache. + */ + Set getKeys(); + + /** + * Returns the total disk space in bytes used by the cache. + * + * @return The total disk space in bytes. + */ + long getCacheSpace(); + + /** + * A caller should invoke this method when they require data from a given position for a given + * key. + * + *

If there is a cache entry that overlaps the position, then the returned {@link CacheSpan} + * defines the file in which the data is stored. {@link CacheSpan#isCached} is true. The caller + * may read from the cache file, but does not acquire any locks. + * + *

If there is no cache entry overlapping {@code offset}, then the returned {@link CacheSpan} + * defines a hole in the cache starting at {@code position} into which the caller may write as it + * obtains the data from some other source. The returned {@link CacheSpan} serves as a lock. + * Whilst the caller holds the lock it may write data into the hole. It may split data into + * multiple files. When the caller has finished writing a file it should commit it to the cache by + * calling {@link #commitFile(File, long)}. When the caller has finished writing, it must release + * the lock by calling {@link #releaseHoleSpan}. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param key The key of the data being requested. + * @param position The position of the data being requested. + * @return The {@link CacheSpan}. + * @throws InterruptedException If the thread was interrupted. + * @throws CacheException If an error is encountered. + */ + @WorkerThread + CacheSpan startReadWrite(String key, long position) throws InterruptedException, CacheException; + + /** + * Same as {@link #startReadWrite(String, long)}. However, if the cache entry is locked, then + * instead of blocking, this method will return null as the {@link CacheSpan}. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param key The key of the data being requested. + * @param position The position of the data being requested. + * @return The {@link CacheSpan}. Or null if the cache entry is locked. + * @throws CacheException If an error is encountered. + */ + @WorkerThread + @Nullable + CacheSpan startReadWriteNonBlocking(String key, long position) throws CacheException; + + /** + * Obtains a cache file into which data can be written. Must only be called when holding a + * corresponding hole {@link CacheSpan} obtained from {@link #startReadWrite(String, long)}. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param key The cache key for the data. + * @param position The starting position of the data. + * @param length The length of the data being written, or {@link C#LENGTH_UNSET} if unknown. Used + * only to ensure that there is enough space in the cache. + * @return The file into which data should be written. + * @throws CacheException If an error is encountered. + */ + @WorkerThread + File startFile(String key, long position, long length) throws CacheException; + + /** + * Commits a file into the cache. Must only be called when holding a corresponding hole {@link + * CacheSpan} obtained from {@link #startReadWrite(String, long)}. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param file A newly written cache file. + * @param length The length of the newly written cache file in bytes. + * @throws CacheException If an error is encountered. + */ + @WorkerThread + void commitFile(File file, long length) throws CacheException; + + /** + * Releases a {@link CacheSpan} obtained from {@link #startReadWrite(String, long)} which + * corresponded to a hole in the cache. + * + * @param holeSpan The {@link CacheSpan} being released. + */ + void releaseHoleSpan(CacheSpan holeSpan); + + /** + * Removes a cached {@link CacheSpan} from the cache, deleting the underlying file. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param span The {@link CacheSpan} to remove. + * @throws CacheException If an error is encountered. + */ + @WorkerThread + void removeSpan(CacheSpan span) throws CacheException; + + /** + * Queries if a range is entirely available in the cache. + * + * @param key The cache key for the data. + * @param position The starting position of the data. + * @param length The length of the data. + * @return true if the data is available in the Cache otherwise false; + */ + boolean isCached(String key, long position, long length); + + /** + * Returns the length of the cached data block starting from the {@code position} to the block end + * up to {@code length} bytes. If the {@code position} isn't cached then -(the length of the gap + * to the next cached data up to {@code length} bytes) is returned. + * + * @param key The cache key for the data. + * @param position The starting position of the data. + * @param length The maximum length of the data to be returned. + * @return The length of the cached or not cached data block length. + */ + long getCachedLength(String key, long position, long length); + + /** + * Applies {@code mutations} to the {@link ContentMetadata} for the given key. A new {@link + * CachedContent} is added if there isn't one already with the given key. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param key The cache key for the data. + * @param mutations Contains mutations to be applied to the metadata. + * @throws CacheException If an error is encountered. + */ + @WorkerThread + void applyContentMetadataMutations(String key, ContentMetadataMutations mutations) + throws CacheException; + + /** + * Returns a {@link ContentMetadata} for the given key. + * + * @param key The cache key for the data. + * @return A {@link ContentMetadata} for the given key. + */ + ContentMetadata getContentMetadata(String key); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSink.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSink.java new file mode 100644 index 0000000000..e372a02851 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSink.java @@ -0,0 +1,210 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSink; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.Cache.CacheException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ReusableBufferedOutputStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.File; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.OutputStream; + +/** + * Writes data into a cache. + * + *

If the {@link DataSpec} passed to {@link #open(DataSpec)} has the {@code length} field set to + * {@link C#LENGTH_UNSET} and {@link DataSpec#FLAG_DONT_CACHE_IF_LENGTH_UNKNOWN} set, then {@link + * #write(byte[], int, int)} calls are ignored. + */ +public final class CacheDataSink implements DataSink { + + /** Default {@code fragmentSize} recommended for caching use cases. */ + public static final long DEFAULT_FRAGMENT_SIZE = 5 * 1024 * 1024; + /** Default buffer size in bytes. */ + public static final int DEFAULT_BUFFER_SIZE = 20 * 1024; + + private static final long MIN_RECOMMENDED_FRAGMENT_SIZE = 2 * 1024 * 1024; + private static final String TAG = "CacheDataSink"; + + private final Cache cache; + private final long fragmentSize; + private final int bufferSize; + + private DataSpec dataSpec; + private long dataSpecFragmentSize; + private File file; + private OutputStream outputStream; + private long outputStreamBytesWritten; + private long dataSpecBytesWritten; + private ReusableBufferedOutputStream bufferedOutputStream; + + /** + * Thrown when IOException is encountered when writing data into sink. + */ + public static class CacheDataSinkException extends CacheException { + + public CacheDataSinkException(IOException cause) { + super(cause); + } + + } + + /** + * Constructs an instance using {@link #DEFAULT_BUFFER_SIZE}. + * + * @param cache The cache into which data should be written. + * @param fragmentSize For requests that should be fragmented into multiple cache files, this is + * the maximum size of a cache file in bytes. If set to {@link C#LENGTH_UNSET} then no + * fragmentation will occur. Using a small value allows for finer-grained cache eviction + * policies, at the cost of increased overhead both on the cache implementation and the file + * system. Values under {@code (2 * 1024 * 1024)} are not recommended. + */ + public CacheDataSink(Cache cache, long fragmentSize) { + this(cache, fragmentSize, DEFAULT_BUFFER_SIZE); + } + + /** + * @param cache The cache into which data should be written. + * @param fragmentSize For requests that should be fragmented into multiple cache files, this is + * the maximum size of a cache file in bytes. If set to {@link C#LENGTH_UNSET} then no + * fragmentation will occur. Using a small value allows for finer-grained cache eviction + * policies, at the cost of increased overhead both on the cache implementation and the file + * system. Values under {@code (2 * 1024 * 1024)} are not recommended. + * @param bufferSize The buffer size in bytes for writing to a cache file. A zero or negative + * value disables buffering. + */ + public CacheDataSink(Cache cache, long fragmentSize, int bufferSize) { + Assertions.checkState( + fragmentSize > 0 || fragmentSize == C.LENGTH_UNSET, + "fragmentSize must be positive or C.LENGTH_UNSET."); + if (fragmentSize != C.LENGTH_UNSET && fragmentSize < MIN_RECOMMENDED_FRAGMENT_SIZE) { + Log.w( + TAG, + "fragmentSize is below the minimum recommended value of " + + MIN_RECOMMENDED_FRAGMENT_SIZE + + ". This may cause poor cache performance."); + } + this.cache = Assertions.checkNotNull(cache); + this.fragmentSize = fragmentSize == C.LENGTH_UNSET ? Long.MAX_VALUE : fragmentSize; + this.bufferSize = bufferSize; + } + + @Override + public void open(DataSpec dataSpec) throws CacheDataSinkException { + if (dataSpec.length == C.LENGTH_UNSET + && dataSpec.isFlagSet(DataSpec.FLAG_DONT_CACHE_IF_LENGTH_UNKNOWN)) { + this.dataSpec = null; + return; + } + this.dataSpec = dataSpec; + this.dataSpecFragmentSize = + dataSpec.isFlagSet(DataSpec.FLAG_ALLOW_CACHE_FRAGMENTATION) ? fragmentSize : Long.MAX_VALUE; + dataSpecBytesWritten = 0; + try { + openNextOutputStream(); + } catch (IOException e) { + throw new CacheDataSinkException(e); + } + } + + @Override + public void write(byte[] buffer, int offset, int length) throws CacheDataSinkException { + if (dataSpec == null) { + return; + } + try { + int bytesWritten = 0; + while (bytesWritten < length) { + if (outputStreamBytesWritten == dataSpecFragmentSize) { + closeCurrentOutputStream(); + openNextOutputStream(); + } + int bytesToWrite = + (int) Math.min(length - bytesWritten, dataSpecFragmentSize - outputStreamBytesWritten); + outputStream.write(buffer, offset + bytesWritten, bytesToWrite); + bytesWritten += bytesToWrite; + outputStreamBytesWritten += bytesToWrite; + dataSpecBytesWritten += bytesToWrite; + } + } catch (IOException e) { + throw new CacheDataSinkException(e); + } + } + + @Override + public void close() throws CacheDataSinkException { + if (dataSpec == null) { + return; + } + try { + closeCurrentOutputStream(); + } catch (IOException e) { + throw new CacheDataSinkException(e); + } + } + + private void openNextOutputStream() throws IOException { + long length = + dataSpec.length == C.LENGTH_UNSET + ? C.LENGTH_UNSET + : Math.min(dataSpec.length - dataSpecBytesWritten, dataSpecFragmentSize); + file = + cache.startFile( + dataSpec.key, dataSpec.absoluteStreamPosition + dataSpecBytesWritten, length); + FileOutputStream underlyingFileOutputStream = new FileOutputStream(file); + if (bufferSize > 0) { + if (bufferedOutputStream == null) { + bufferedOutputStream = new ReusableBufferedOutputStream(underlyingFileOutputStream, + bufferSize); + } else { + bufferedOutputStream.reset(underlyingFileOutputStream); + } + outputStream = bufferedOutputStream; + } else { + outputStream = underlyingFileOutputStream; + } + outputStreamBytesWritten = 0; + } + + private void closeCurrentOutputStream() throws IOException { + if (outputStream == null) { + return; + } + + boolean success = false; + try { + outputStream.flush(); + success = true; + } finally { + Util.closeQuietly(outputStream); + outputStream = null; + File fileToCommit = file; + file = null; + if (success) { + cache.commitFile(fileToCommit, outputStreamBytesWritten); + } else { + fileToCommit.delete(); + } + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSinkFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSinkFactory.java new file mode 100644 index 0000000000..51ba6f4294 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSinkFactory.java @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSink; + +/** + * A {@link DataSink.Factory} that produces {@link CacheDataSink}. + */ +public final class CacheDataSinkFactory implements DataSink.Factory { + + private final Cache cache; + private final long fragmentSize; + private final int bufferSize; + + /** @see CacheDataSink#CacheDataSink(Cache, long) */ + public CacheDataSinkFactory(Cache cache, long fragmentSize) { + this(cache, fragmentSize, CacheDataSink.DEFAULT_BUFFER_SIZE); + } + + /** @see CacheDataSink#CacheDataSink(Cache, long, int) */ + public CacheDataSinkFactory(Cache cache, long fragmentSize, int bufferSize) { + this.cache = cache; + this.fragmentSize = fragmentSize; + this.bufferSize = bufferSize; + } + + @Override + public DataSink createDataSink() { + return new CacheDataSink(cache, fragmentSize, bufferSize); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSource.java new file mode 100644 index 0000000000..19fb8191e4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSource.java @@ -0,0 +1,580 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import android.net.Uri; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSink; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSourceException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec.HttpMethod; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.FileDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TeeDataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.Cache.CacheException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.io.IOException; +import java.io.InterruptedIOException; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.Collections; +import java.util.List; +import java.util.Map; + +/** + * A {@link DataSource} that reads and writes a {@link Cache}. Requests are fulfilled from the cache + * when possible. When data is not cached it is requested from an upstream {@link DataSource} and + * written into the cache. + */ +public final class CacheDataSource implements DataSource { + + /** + * Flags controlling the CacheDataSource's behavior. Possible flag values are {@link + * #FLAG_BLOCK_ON_CACHE}, {@link #FLAG_IGNORE_CACHE_ON_ERROR} and {@link + * #FLAG_IGNORE_CACHE_FOR_UNSET_LENGTH_REQUESTS}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = { + FLAG_BLOCK_ON_CACHE, + FLAG_IGNORE_CACHE_ON_ERROR, + FLAG_IGNORE_CACHE_FOR_UNSET_LENGTH_REQUESTS + }) + public @interface Flags {} + /** + * A flag indicating whether we will block reads if the cache key is locked. If unset then data is + * read from upstream if the cache key is locked, regardless of whether the data is cached. + */ + public static final int FLAG_BLOCK_ON_CACHE = 1; + + /** + * A flag indicating whether the cache is bypassed following any cache related error. If set + * then cache related exceptions may be thrown for one cycle of open, read and close calls. + * Subsequent cycles of these calls will then bypass the cache. + */ + public static final int FLAG_IGNORE_CACHE_ON_ERROR = 1 << 1; // 2 + + /** + * A flag indicating that the cache should be bypassed for requests whose lengths are unset. This + * flag is provided for legacy reasons only. + */ + public static final int FLAG_IGNORE_CACHE_FOR_UNSET_LENGTH_REQUESTS = 1 << 2; // 4 + + /** + * Reasons the cache may be ignored. One of {@link #CACHE_IGNORED_REASON_ERROR} or {@link + * #CACHE_IGNORED_REASON_UNSET_LENGTH}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({CACHE_IGNORED_REASON_ERROR, CACHE_IGNORED_REASON_UNSET_LENGTH}) + public @interface CacheIgnoredReason {} + + /** Cache not ignored. */ + private static final int CACHE_NOT_IGNORED = -1; + + /** Cache ignored due to a cache related error. */ + public static final int CACHE_IGNORED_REASON_ERROR = 0; + + /** Cache ignored due to a request with an unset length. */ + public static final int CACHE_IGNORED_REASON_UNSET_LENGTH = 1; + + /** + * Listener of {@link CacheDataSource} events. + */ + public interface EventListener { + + /** + * Called when bytes have been read from the cache. + * + * @param cacheSizeBytes Current cache size in bytes. + * @param cachedBytesRead Total bytes read from the cache since this method was last called. + */ + void onCachedBytesRead(long cacheSizeBytes, long cachedBytesRead); + + /** + * Called when the current request ignores cache. + * + * @param reason Reason cache is bypassed. + */ + void onCacheIgnored(@CacheIgnoredReason int reason); + } + + /** Minimum number of bytes to read before checking cache for availability. */ + private static final long MIN_READ_BEFORE_CHECKING_CACHE = 100 * 1024; + + private final Cache cache; + private final DataSource cacheReadDataSource; + @Nullable private final DataSource cacheWriteDataSource; + private final DataSource upstreamDataSource; + private final CacheKeyFactory cacheKeyFactory; + @Nullable private final EventListener eventListener; + + private final boolean blockOnCache; + private final boolean ignoreCacheOnError; + private final boolean ignoreCacheForUnsetLengthRequests; + + @Nullable private DataSource currentDataSource; + private boolean currentDataSpecLengthUnset; + @Nullable private Uri uri; + @Nullable private Uri actualUri; + @HttpMethod private int httpMethod; + @Nullable private byte[] httpBody; + private Map httpRequestHeaders = Collections.emptyMap(); + @DataSpec.Flags private int flags; + @Nullable private String key; + private long readPosition; + private long bytesRemaining; + @Nullable private CacheSpan currentHoleSpan; + private boolean seenCacheError; + private boolean currentRequestIgnoresCache; + private long totalCachedBytesRead; + private long checkCachePosition; + + /** + * Constructs an instance with default {@link DataSource} and {@link DataSink} instances for + * reading and writing the cache. + * + * @param cache The cache. + * @param upstream A {@link DataSource} for reading data not in the cache. + */ + public CacheDataSource(Cache cache, DataSource upstream) { + this(cache, upstream, /* flags= */ 0); + } + + /** + * Constructs an instance with default {@link DataSource} and {@link DataSink} instances for + * reading and writing the cache. + * + * @param cache The cache. + * @param upstream A {@link DataSource} for reading data not in the cache. + * @param flags A combination of {@link #FLAG_BLOCK_ON_CACHE}, {@link #FLAG_IGNORE_CACHE_ON_ERROR} + * and {@link #FLAG_IGNORE_CACHE_FOR_UNSET_LENGTH_REQUESTS}, or 0. + */ + public CacheDataSource(Cache cache, DataSource upstream, @Flags int flags) { + this( + cache, + upstream, + new FileDataSource(), + new CacheDataSink(cache, CacheDataSink.DEFAULT_FRAGMENT_SIZE), + flags, + /* eventListener= */ null); + } + + /** + * Constructs an instance with arbitrary {@link DataSource} and {@link DataSink} instances for + * reading and writing the cache. One use of this constructor is to allow data to be transformed + * before it is written to disk. + * + * @param cache The cache. + * @param upstream A {@link DataSource} for reading data not in the cache. + * @param cacheReadDataSource A {@link DataSource} for reading data from the cache. + * @param cacheWriteDataSink A {@link DataSink} for writing data to the cache. If null, cache is + * accessed read-only. + * @param flags A combination of {@link #FLAG_BLOCK_ON_CACHE}, {@link #FLAG_IGNORE_CACHE_ON_ERROR} + * and {@link #FLAG_IGNORE_CACHE_FOR_UNSET_LENGTH_REQUESTS}, or 0. + * @param eventListener An optional {@link EventListener} to receive events. + */ + public CacheDataSource( + Cache cache, + DataSource upstream, + DataSource cacheReadDataSource, + @Nullable DataSink cacheWriteDataSink, + @Flags int flags, + @Nullable EventListener eventListener) { + this( + cache, + upstream, + cacheReadDataSource, + cacheWriteDataSink, + flags, + eventListener, + /* cacheKeyFactory= */ null); + } + + /** + * Constructs an instance with arbitrary {@link DataSource} and {@link DataSink} instances for + * reading and writing the cache. One use of this constructor is to allow data to be transformed + * before it is written to disk. + * + * @param cache The cache. + * @param upstream A {@link DataSource} for reading data not in the cache. + * @param cacheReadDataSource A {@link DataSource} for reading data from the cache. + * @param cacheWriteDataSink A {@link DataSink} for writing data to the cache. If null, cache is + * accessed read-only. + * @param flags A combination of {@link #FLAG_BLOCK_ON_CACHE}, {@link #FLAG_IGNORE_CACHE_ON_ERROR} + * and {@link #FLAG_IGNORE_CACHE_FOR_UNSET_LENGTH_REQUESTS}, or 0. + * @param eventListener An optional {@link EventListener} to receive events. + * @param cacheKeyFactory An optional factory for cache keys. + */ + public CacheDataSource( + Cache cache, + DataSource upstream, + DataSource cacheReadDataSource, + @Nullable DataSink cacheWriteDataSink, + @Flags int flags, + @Nullable EventListener eventListener, + @Nullable CacheKeyFactory cacheKeyFactory) { + this.cache = cache; + this.cacheReadDataSource = cacheReadDataSource; + this.cacheKeyFactory = + cacheKeyFactory != null ? cacheKeyFactory : CacheUtil.DEFAULT_CACHE_KEY_FACTORY; + this.blockOnCache = (flags & FLAG_BLOCK_ON_CACHE) != 0; + this.ignoreCacheOnError = (flags & FLAG_IGNORE_CACHE_ON_ERROR) != 0; + this.ignoreCacheForUnsetLengthRequests = + (flags & FLAG_IGNORE_CACHE_FOR_UNSET_LENGTH_REQUESTS) != 0; + this.upstreamDataSource = upstream; + if (cacheWriteDataSink != null) { + this.cacheWriteDataSource = new TeeDataSource(upstream, cacheWriteDataSink); + } else { + this.cacheWriteDataSource = null; + } + this.eventListener = eventListener; + } + + @Override + public void addTransferListener(TransferListener transferListener) { + cacheReadDataSource.addTransferListener(transferListener); + upstreamDataSource.addTransferListener(transferListener); + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + try { + key = cacheKeyFactory.buildCacheKey(dataSpec); + uri = dataSpec.uri; + actualUri = getRedirectedUriOrDefault(cache, key, /* defaultUri= */ uri); + httpMethod = dataSpec.httpMethod; + httpBody = dataSpec.httpBody; + httpRequestHeaders = dataSpec.httpRequestHeaders; + flags = dataSpec.flags; + readPosition = dataSpec.position; + + int reason = shouldIgnoreCacheForRequest(dataSpec); + currentRequestIgnoresCache = reason != CACHE_NOT_IGNORED; + if (currentRequestIgnoresCache) { + notifyCacheIgnored(reason); + } + + if (dataSpec.length != C.LENGTH_UNSET || currentRequestIgnoresCache) { + bytesRemaining = dataSpec.length; + } else { + bytesRemaining = ContentMetadata.getContentLength(cache.getContentMetadata(key)); + if (bytesRemaining != C.LENGTH_UNSET) { + bytesRemaining -= dataSpec.position; + if (bytesRemaining <= 0) { + throw new DataSourceException(DataSourceException.POSITION_OUT_OF_RANGE); + } + } + } + openNextSource(false); + return bytesRemaining; + } catch (Throwable e) { + handleBeforeThrow(e); + throw e; + } + } + + @Override + public int read(byte[] buffer, int offset, int readLength) throws IOException { + if (readLength == 0) { + return 0; + } + if (bytesRemaining == 0) { + return C.RESULT_END_OF_INPUT; + } + try { + if (readPosition >= checkCachePosition) { + openNextSource(true); + } + int bytesRead = currentDataSource.read(buffer, offset, readLength); + if (bytesRead != C.RESULT_END_OF_INPUT) { + if (isReadingFromCache()) { + totalCachedBytesRead += bytesRead; + } + readPosition += bytesRead; + if (bytesRemaining != C.LENGTH_UNSET) { + bytesRemaining -= bytesRead; + } + } else if (currentDataSpecLengthUnset) { + setNoBytesRemainingAndMaybeStoreLength(); + } else if (bytesRemaining > 0 || bytesRemaining == C.LENGTH_UNSET) { + closeCurrentSource(); + openNextSource(false); + return read(buffer, offset, readLength); + } + return bytesRead; + } catch (IOException e) { + if (currentDataSpecLengthUnset && CacheUtil.isCausedByPositionOutOfRange(e)) { + setNoBytesRemainingAndMaybeStoreLength(); + return C.RESULT_END_OF_INPUT; + } + handleBeforeThrow(e); + throw e; + } catch (Throwable e) { + handleBeforeThrow(e); + throw e; + } + } + + @Override + @Nullable + public Uri getUri() { + return actualUri; + } + + @Override + public Map> getResponseHeaders() { + // TODO: Implement. + return isReadingFromUpstream() + ? upstreamDataSource.getResponseHeaders() + : Collections.emptyMap(); + } + + @Override + public void close() throws IOException { + uri = null; + actualUri = null; + httpMethod = DataSpec.HTTP_METHOD_GET; + httpBody = null; + httpRequestHeaders = Collections.emptyMap(); + flags = 0; + readPosition = 0; + key = null; + notifyBytesRead(); + try { + closeCurrentSource(); + } catch (Throwable e) { + handleBeforeThrow(e); + throw e; + } + } + + /** + * Opens the next source. If the cache contains data spanning the current read position then + * {@link #cacheReadDataSource} is opened to read from it. Else {@link #upstreamDataSource} is + * opened to read from the upstream source and write into the cache. + * + *

There must not be a currently open source when this method is called, except in the case + * that {@code checkCache} is true. If {@code checkCache} is true then there must be a currently + * open source, and it must be {@link #upstreamDataSource}. It will be closed and a new source + * opened if it's possible to switch to reading from or writing to the cache. If a switch isn't + * possible then the current source is left unchanged. + * + * @param checkCache If true tries to switch to reading from or writing to cache instead of + * reading from {@link #upstreamDataSource}, which is the currently open source. + */ + private void openNextSource(boolean checkCache) throws IOException { + CacheSpan nextSpan; + if (currentRequestIgnoresCache) { + nextSpan = null; + } else if (blockOnCache) { + try { + nextSpan = cache.startReadWrite(key, readPosition); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + throw new InterruptedIOException(); + } + } else { + nextSpan = cache.startReadWriteNonBlocking(key, readPosition); + } + + DataSpec nextDataSpec; + DataSource nextDataSource; + if (nextSpan == null) { + // The data is locked in the cache, or we're ignoring the cache. Bypass the cache and read + // from upstream. + nextDataSource = upstreamDataSource; + nextDataSpec = + new DataSpec( + uri, + httpMethod, + httpBody, + readPosition, + readPosition, + bytesRemaining, + key, + flags, + httpRequestHeaders); + } else if (nextSpan.isCached) { + // Data is cached, read from cache. + Uri fileUri = Uri.fromFile(nextSpan.file); + long filePosition = readPosition - nextSpan.position; + long length = nextSpan.length - filePosition; + if (bytesRemaining != C.LENGTH_UNSET) { + length = Math.min(length, bytesRemaining); + } + // Deliberately skip the HTTP-related parameters since we're reading from the cache, not + // making an HTTP request. + nextDataSpec = new DataSpec(fileUri, readPosition, filePosition, length, key, flags); + nextDataSource = cacheReadDataSource; + } else { + // Data is not cached, and data is not locked, read from upstream with cache backing. + long length; + if (nextSpan.isOpenEnded()) { + length = bytesRemaining; + } else { + length = nextSpan.length; + if (bytesRemaining != C.LENGTH_UNSET) { + length = Math.min(length, bytesRemaining); + } + } + nextDataSpec = + new DataSpec( + uri, + httpMethod, + httpBody, + readPosition, + readPosition, + length, + key, + flags, + httpRequestHeaders); + if (cacheWriteDataSource != null) { + nextDataSource = cacheWriteDataSource; + } else { + nextDataSource = upstreamDataSource; + cache.releaseHoleSpan(nextSpan); + nextSpan = null; + } + } + + checkCachePosition = + !currentRequestIgnoresCache && nextDataSource == upstreamDataSource + ? readPosition + MIN_READ_BEFORE_CHECKING_CACHE + : Long.MAX_VALUE; + if (checkCache) { + Assertions.checkState(isBypassingCache()); + if (nextDataSource == upstreamDataSource) { + // Continue reading from upstream. + return; + } + // We're switching to reading from or writing to the cache. + try { + closeCurrentSource(); + } catch (Throwable e) { + if (nextSpan.isHoleSpan()) { + // Release the hole span before throwing, else we'll hold it forever. + cache.releaseHoleSpan(nextSpan); + } + throw e; + } + } + + if (nextSpan != null && nextSpan.isHoleSpan()) { + currentHoleSpan = nextSpan; + } + currentDataSource = nextDataSource; + currentDataSpecLengthUnset = nextDataSpec.length == C.LENGTH_UNSET; + long resolvedLength = nextDataSource.open(nextDataSpec); + + // Update bytesRemaining, actualUri and (if writing to cache) the cache metadata. + ContentMetadataMutations mutations = new ContentMetadataMutations(); + if (currentDataSpecLengthUnset && resolvedLength != C.LENGTH_UNSET) { + bytesRemaining = resolvedLength; + ContentMetadataMutations.setContentLength(mutations, readPosition + bytesRemaining); + } + if (isReadingFromUpstream()) { + actualUri = currentDataSource.getUri(); + boolean isRedirected = !uri.equals(actualUri); + ContentMetadataMutations.setRedirectedUri(mutations, isRedirected ? actualUri : null); + } + if (isWritingToCache()) { + cache.applyContentMetadataMutations(key, mutations); + } + } + + private void setNoBytesRemainingAndMaybeStoreLength() throws IOException { + bytesRemaining = 0; + if (isWritingToCache()) { + ContentMetadataMutations mutations = new ContentMetadataMutations(); + ContentMetadataMutations.setContentLength(mutations, readPosition); + cache.applyContentMetadataMutations(key, mutations); + } + } + + private static Uri getRedirectedUriOrDefault(Cache cache, String key, Uri defaultUri) { + Uri redirectedUri = ContentMetadata.getRedirectedUri(cache.getContentMetadata(key)); + return redirectedUri != null ? redirectedUri : defaultUri; + } + + private boolean isReadingFromUpstream() { + return !isReadingFromCache(); + } + + private boolean isBypassingCache() { + return currentDataSource == upstreamDataSource; + } + + private boolean isReadingFromCache() { + return currentDataSource == cacheReadDataSource; + } + + private boolean isWritingToCache() { + return currentDataSource == cacheWriteDataSource; + } + + private void closeCurrentSource() throws IOException { + if (currentDataSource == null) { + return; + } + try { + currentDataSource.close(); + } finally { + currentDataSource = null; + currentDataSpecLengthUnset = false; + if (currentHoleSpan != null) { + cache.releaseHoleSpan(currentHoleSpan); + currentHoleSpan = null; + } + } + } + + private void handleBeforeThrow(Throwable exception) { + if (isReadingFromCache() || exception instanceof CacheException) { + seenCacheError = true; + } + } + + private int shouldIgnoreCacheForRequest(DataSpec dataSpec) { + if (ignoreCacheOnError && seenCacheError) { + return CACHE_IGNORED_REASON_ERROR; + } else if (ignoreCacheForUnsetLengthRequests && dataSpec.length == C.LENGTH_UNSET) { + return CACHE_IGNORED_REASON_UNSET_LENGTH; + } else { + return CACHE_NOT_IGNORED; + } + } + + private void notifyCacheIgnored(@CacheIgnoredReason int reason) { + if (eventListener != null) { + eventListener.onCacheIgnored(reason); + } + } + + private void notifyBytesRead() { + if (eventListener != null && totalCachedBytesRead > 0) { + eventListener.onCachedBytesRead(cache.getCacheSpace(), totalCachedBytesRead); + totalCachedBytesRead = 0; + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSourceFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSourceFactory.java new file mode 100644 index 0000000000..21aef3f93a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheDataSourceFactory.java @@ -0,0 +1,112 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSink; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.FileDataSource; + +/** A {@link DataSource.Factory} that produces {@link CacheDataSource}. */ +public final class CacheDataSourceFactory implements DataSource.Factory { + + private final Cache cache; + private final DataSource.Factory upstreamFactory; + private final DataSource.Factory cacheReadDataSourceFactory; + @CacheDataSource.Flags private final int flags; + @Nullable private final DataSink.Factory cacheWriteDataSinkFactory; + @Nullable private final CacheDataSource.EventListener eventListener; + @Nullable private final CacheKeyFactory cacheKeyFactory; + + /** + * Constructs a factory which creates {@link CacheDataSource} instances with default {@link + * DataSource} and {@link DataSink} instances for reading and writing the cache. + * + * @param cache The cache. + * @param upstreamFactory A {@link DataSource.Factory} for creating upstream {@link DataSource}s + * for reading data not in the cache. + */ + public CacheDataSourceFactory(Cache cache, DataSource.Factory upstreamFactory) { + this(cache, upstreamFactory, /* flags= */ 0); + } + + /** @see CacheDataSource#CacheDataSource(Cache, DataSource, int) */ + public CacheDataSourceFactory( + Cache cache, DataSource.Factory upstreamFactory, @CacheDataSource.Flags int flags) { + this( + cache, + upstreamFactory, + new FileDataSource.Factory(), + new CacheDataSinkFactory(cache, CacheDataSink.DEFAULT_FRAGMENT_SIZE), + flags, + /* eventListener= */ null); + } + + /** + * @see CacheDataSource#CacheDataSource(Cache, DataSource, DataSource, DataSink, int, + * CacheDataSource.EventListener) + */ + public CacheDataSourceFactory( + Cache cache, + DataSource.Factory upstreamFactory, + DataSource.Factory cacheReadDataSourceFactory, + @Nullable DataSink.Factory cacheWriteDataSinkFactory, + @CacheDataSource.Flags int flags, + @Nullable CacheDataSource.EventListener eventListener) { + this( + cache, + upstreamFactory, + cacheReadDataSourceFactory, + cacheWriteDataSinkFactory, + flags, + eventListener, + /* cacheKeyFactory= */ null); + } + + /** + * @see CacheDataSource#CacheDataSource(Cache, DataSource, DataSource, DataSink, int, + * CacheDataSource.EventListener, CacheKeyFactory) + */ + public CacheDataSourceFactory( + Cache cache, + DataSource.Factory upstreamFactory, + DataSource.Factory cacheReadDataSourceFactory, + @Nullable DataSink.Factory cacheWriteDataSinkFactory, + @CacheDataSource.Flags int flags, + @Nullable CacheDataSource.EventListener eventListener, + @Nullable CacheKeyFactory cacheKeyFactory) { + this.cache = cache; + this.upstreamFactory = upstreamFactory; + this.cacheReadDataSourceFactory = cacheReadDataSourceFactory; + this.cacheWriteDataSinkFactory = cacheWriteDataSinkFactory; + this.flags = flags; + this.eventListener = eventListener; + this.cacheKeyFactory = cacheKeyFactory; + } + + @Override + public CacheDataSource createDataSource() { + return new CacheDataSource( + cache, + upstreamFactory.createDataSource(), + cacheReadDataSourceFactory.createDataSource(), + cacheWriteDataSinkFactory == null ? null : cacheWriteDataSinkFactory.createDataSink(), + flags, + eventListener, + cacheKeyFactory); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheEvictor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheEvictor.java new file mode 100644 index 0000000000..017e84c8c8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheEvictor.java @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; + +/** + * Evicts data from a {@link Cache}. Implementations should call {@link Cache#removeSpan(CacheSpan)} + * to evict cache entries based on their eviction policies. + */ +public interface CacheEvictor extends Cache.Listener { + + /** + * Returns whether the evictor requires the {@link Cache} to touch {@link CacheSpan CacheSpans} + * when it accesses them. Implementations that do not use {@link CacheSpan#lastTouchTimestamp} + * should return {@code false}. + */ + boolean requiresCacheSpanTouches(); + + /** + * Called when cache has been initialized. + */ + void onCacheInitialized(); + + /** + * Called when a writer starts writing to the cache. + * + * @param cache The source of the event. + * @param key The key being written. + * @param position The starting position of the data being written. + * @param length The length of the data being written, or {@link C#LENGTH_UNSET} if unknown. + */ + void onStartFile(Cache cache, String key, long position, long length); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheFileMetadata.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheFileMetadata.java new file mode 100644 index 0000000000..2618a3ef6a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheFileMetadata.java @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +/** Metadata associated with a cache file. */ +/* package */ final class CacheFileMetadata { + + public final long length; + public final long lastTouchTimestamp; + + public CacheFileMetadata(long length, long lastTouchTimestamp) { + this.length = length; + this.lastTouchTimestamp = lastTouchTimestamp; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheFileMetadataIndex.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheFileMetadataIndex.java new file mode 100644 index 0000000000..cd69336ff4 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheFileMetadataIndex.java @@ -0,0 +1,252 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import android.content.ContentValues; +import android.database.Cursor; +import android.database.SQLException; +import android.database.sqlite.SQLiteDatabase; +import androidx.annotation.WorkerThread; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.DatabaseIOException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.DatabaseProvider; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.VersionTable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.HashMap; +import java.util.Map; +import java.util.Set; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** Maintains an index of cache file metadata. */ +/* package */ final class CacheFileMetadataIndex { + + private static final String TABLE_PREFIX = DatabaseProvider.TABLE_PREFIX + "CacheFileMetadata"; + private static final int TABLE_VERSION = 1; + + private static final String COLUMN_NAME = "name"; + private static final String COLUMN_LENGTH = "length"; + private static final String COLUMN_LAST_TOUCH_TIMESTAMP = "last_touch_timestamp"; + + private static final int COLUMN_INDEX_NAME = 0; + private static final int COLUMN_INDEX_LENGTH = 1; + private static final int COLUMN_INDEX_LAST_TOUCH_TIMESTAMP = 2; + + private static final String WHERE_NAME_EQUALS = COLUMN_NAME + " = ?"; + + private static final String[] COLUMNS = + new String[] { + COLUMN_NAME, COLUMN_LENGTH, COLUMN_LAST_TOUCH_TIMESTAMP, + }; + private static final String TABLE_SCHEMA = + "(" + + COLUMN_NAME + + " TEXT PRIMARY KEY NOT NULL," + + COLUMN_LENGTH + + " INTEGER NOT NULL," + + COLUMN_LAST_TOUCH_TIMESTAMP + + " INTEGER NOT NULL)"; + + private final DatabaseProvider databaseProvider; + + private @MonotonicNonNull String tableName; + + /** + * Deletes index data for the specified cache. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param databaseProvider Provides the database in which the index is stored. + * @param uid The cache UID. + * @throws DatabaseIOException If an error occurs deleting the index data. + */ + @WorkerThread + public static void delete(DatabaseProvider databaseProvider, long uid) + throws DatabaseIOException { + String hexUid = Long.toHexString(uid); + try { + String tableName = getTableName(hexUid); + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.beginTransactionNonExclusive(); + try { + VersionTable.removeVersion( + writableDatabase, VersionTable.FEATURE_CACHE_FILE_METADATA, hexUid); + dropTable(writableDatabase, tableName); + writableDatabase.setTransactionSuccessful(); + } finally { + writableDatabase.endTransaction(); + } + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + /** @param databaseProvider Provides the database in which the index is stored. */ + public CacheFileMetadataIndex(DatabaseProvider databaseProvider) { + this.databaseProvider = databaseProvider; + } + + /** + * Initializes the index for the given cache UID. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param uid The cache UID. + * @throws DatabaseIOException If an error occurs initializing the index. + */ + @WorkerThread + public void initialize(long uid) throws DatabaseIOException { + try { + String hexUid = Long.toHexString(uid); + tableName = getTableName(hexUid); + SQLiteDatabase readableDatabase = databaseProvider.getReadableDatabase(); + int version = + VersionTable.getVersion( + readableDatabase, VersionTable.FEATURE_CACHE_FILE_METADATA, hexUid); + if (version != TABLE_VERSION) { + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.beginTransactionNonExclusive(); + try { + VersionTable.setVersion( + writableDatabase, VersionTable.FEATURE_CACHE_FILE_METADATA, hexUid, TABLE_VERSION); + dropTable(writableDatabase, tableName); + writableDatabase.execSQL("CREATE TABLE " + tableName + " " + TABLE_SCHEMA); + writableDatabase.setTransactionSuccessful(); + } finally { + writableDatabase.endTransaction(); + } + } + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + /** + * Returns all file metadata keyed by file name. The returned map is mutable and may be modified + * by the caller. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @return The file metadata keyed by file name. + * @throws DatabaseIOException If an error occurs loading the metadata. + */ + @WorkerThread + public Map getAll() throws DatabaseIOException { + try (Cursor cursor = getCursor()) { + Map fileMetadata = new HashMap<>(cursor.getCount()); + while (cursor.moveToNext()) { + String name = cursor.getString(COLUMN_INDEX_NAME); + long length = cursor.getLong(COLUMN_INDEX_LENGTH); + long lastTouchTimestamp = cursor.getLong(COLUMN_INDEX_LAST_TOUCH_TIMESTAMP); + fileMetadata.put(name, new CacheFileMetadata(length, lastTouchTimestamp)); + } + return fileMetadata; + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + /** + * Sets metadata for a given file. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param name The name of the file. + * @param length The file length. + * @param lastTouchTimestamp The file last touch timestamp. + * @throws DatabaseIOException If an error occurs setting the metadata. + */ + @WorkerThread + public void set(String name, long length, long lastTouchTimestamp) throws DatabaseIOException { + Assertions.checkNotNull(tableName); + try { + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + ContentValues values = new ContentValues(); + values.put(COLUMN_NAME, name); + values.put(COLUMN_LENGTH, length); + values.put(COLUMN_LAST_TOUCH_TIMESTAMP, lastTouchTimestamp); + writableDatabase.replaceOrThrow(tableName, /* nullColumnHack= */ null, values); + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + /** + * Removes metadata. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param name The name of the file whose metadata is to be removed. + * @throws DatabaseIOException If an error occurs removing the metadata. + */ + @WorkerThread + public void remove(String name) throws DatabaseIOException { + Assertions.checkNotNull(tableName); + try { + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.delete(tableName, WHERE_NAME_EQUALS, new String[] {name}); + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + /** + * Removes metadata. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param names The names of the files whose metadata is to be removed. + * @throws DatabaseIOException If an error occurs removing the metadata. + */ + @WorkerThread + public void removeAll(Set names) throws DatabaseIOException { + Assertions.checkNotNull(tableName); + try { + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.beginTransactionNonExclusive(); + try { + for (String name : names) { + writableDatabase.delete(tableName, WHERE_NAME_EQUALS, new String[] {name}); + } + writableDatabase.setTransactionSuccessful(); + } finally { + writableDatabase.endTransaction(); + } + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + private Cursor getCursor() { + Assertions.checkNotNull(tableName); + return databaseProvider + .getReadableDatabase() + .query( + tableName, + COLUMNS, + /* selection */ null, + /* selectionArgs= */ null, + /* groupBy= */ null, + /* having= */ null, + /* orderBy= */ null); + } + + private static void dropTable(SQLiteDatabase writableDatabase, String tableName) { + writableDatabase.execSQL("DROP TABLE IF EXISTS " + tableName); + } + + private static String getTableName(String hexUid) { + return TABLE_PREFIX + hexUid; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheKeyFactory.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheKeyFactory.java new file mode 100644 index 0000000000..1c30a4b03e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheKeyFactory.java @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; + +/** Factory for cache keys. */ +public interface CacheKeyFactory { + + /** + * Returns a cache key for the given {@link DataSpec}. + * + * @param dataSpec The data being cached. + */ + String buildCacheKey(DataSpec dataSpec); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheSpan.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheSpan.java new file mode 100644 index 0000000000..f57544f12b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheSpan.java @@ -0,0 +1,106 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import androidx.annotation.NonNull; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.io.File; + +/** + * Defines a span of data that may or may not be cached (as indicated by {@link #isCached}). + */ +public class CacheSpan implements Comparable { + + /** + * The cache key that uniquely identifies the original stream. + */ + public final String key; + /** + * The position of the {@link CacheSpan} in the original stream. + */ + public final long position; + /** + * The length of the {@link CacheSpan}, or {@link C#LENGTH_UNSET} if this is an open-ended hole. + */ + public final long length; + /** + * Whether the {@link CacheSpan} is cached. + */ + public final boolean isCached; + /** The file corresponding to this {@link CacheSpan}, or null if {@link #isCached} is false. */ + @Nullable public final File file; + /** The last touch timestamp, or {@link C#TIME_UNSET} if {@link #isCached} is false. */ + public final long lastTouchTimestamp; + + /** + * Creates a hole CacheSpan which isn't cached, has no last touch timestamp and no file + * associated. + * + * @param key The cache key that uniquely identifies the original stream. + * @param position The position of the {@link CacheSpan} in the original stream. + * @param length The length of the {@link CacheSpan}, or {@link C#LENGTH_UNSET} if this is an + * open-ended hole. + */ + public CacheSpan(String key, long position, long length) { + this(key, position, length, C.TIME_UNSET, null); + } + + /** + * Creates a CacheSpan. + * + * @param key The cache key that uniquely identifies the original stream. + * @param position The position of the {@link CacheSpan} in the original stream. + * @param length The length of the {@link CacheSpan}, or {@link C#LENGTH_UNSET} if this is an + * open-ended hole. + * @param lastTouchTimestamp The last touch timestamp, or {@link C#TIME_UNSET} if {@link + * #isCached} is false. + * @param file The file corresponding to this {@link CacheSpan}, or null if it's a hole. + */ + public CacheSpan( + String key, long position, long length, long lastTouchTimestamp, @Nullable File file) { + this.key = key; + this.position = position; + this.length = length; + this.isCached = file != null; + this.file = file; + this.lastTouchTimestamp = lastTouchTimestamp; + } + + /** + * Returns whether this is an open-ended {@link CacheSpan}. + */ + public boolean isOpenEnded() { + return length == C.LENGTH_UNSET; + } + + /** + * Returns whether this is a hole {@link CacheSpan}. + */ + public boolean isHoleSpan() { + return !isCached; + } + + @Override + public int compareTo(@NonNull CacheSpan another) { + if (!key.equals(another.key)) { + return key.compareTo(another.key); + } + long startOffsetDiff = position - another.position; + return startOffsetDiff == 0 ? 0 : ((startOffsetDiff < 0) ? -1 : 1); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheUtil.java new file mode 100644 index 0000000000..01fef2b605 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CacheUtil.java @@ -0,0 +1,434 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import android.net.Uri; +import android.util.Pair; +import androidx.annotation.Nullable; +import androidx.annotation.WorkerThread; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSourceException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.PriorityTaskManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.EOFException; +import java.io.IOException; +import java.util.NavigableSet; +import java.util.concurrent.atomic.AtomicBoolean; + +/** + * Caching related utility methods. + */ +public final class CacheUtil { + + /** Receives progress updates during cache operations. */ + public interface ProgressListener { + + /** + * Called when progress is made during a cache operation. + * + * @param requestLength The length of the content being cached in bytes, or {@link + * C#LENGTH_UNSET} if unknown. + * @param bytesCached The number of bytes that are cached. + * @param newBytesCached The number of bytes that have been newly cached since the last progress + * update. + */ + void onProgress(long requestLength, long bytesCached, long newBytesCached); + } + + /** Default buffer size to be used while caching. */ + public static final int DEFAULT_BUFFER_SIZE_BYTES = 128 * 1024; + + /** Default {@link CacheKeyFactory}. */ + public static final CacheKeyFactory DEFAULT_CACHE_KEY_FACTORY = + (dataSpec) -> dataSpec.key != null ? dataSpec.key : generateKey(dataSpec.uri); + + /** + * Generates a cache key out of the given {@link Uri}. + * + * @param uri Uri of a content which the requested key is for. + */ + public static String generateKey(Uri uri) { + return uri.toString(); + } + + /** + * Queries the cache to obtain the request length and the number of bytes already cached for a + * given {@link DataSpec}. + * + * @param dataSpec Defines the data to be checked. + * @param cache A {@link Cache} which has the data. + * @param cacheKeyFactory An optional factory for cache keys. + * @return A pair containing the request length and the number of bytes that are already cached. + */ + public static Pair getCached( + DataSpec dataSpec, Cache cache, @Nullable CacheKeyFactory cacheKeyFactory) { + String key = buildCacheKey(dataSpec, cacheKeyFactory); + long position = dataSpec.absoluteStreamPosition; + long requestLength = getRequestLength(dataSpec, cache, key); + long bytesAlreadyCached = 0; + long bytesLeft = requestLength; + while (bytesLeft != 0) { + long blockLength = + cache.getCachedLength( + key, position, bytesLeft != C.LENGTH_UNSET ? bytesLeft : Long.MAX_VALUE); + if (blockLength > 0) { + bytesAlreadyCached += blockLength; + } else { + blockLength = -blockLength; + if (blockLength == Long.MAX_VALUE) { + break; + } + } + position += blockLength; + bytesLeft -= bytesLeft == C.LENGTH_UNSET ? 0 : blockLength; + } + return Pair.create(requestLength, bytesAlreadyCached); + } + + /** + * Caches the data defined by {@code dataSpec}, skipping already cached data. Caching stops early + * if the end of the input is reached. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param dataSpec Defines the data to be cached. + * @param cache A {@link Cache} to store the data. + * @param cacheKeyFactory An optional factory for cache keys. + * @param upstream A {@link DataSource} for reading data not in the cache. + * @param progressListener A listener to receive progress updates, or {@code null}. + * @param isCanceled An optional flag that will interrupt caching if set to true. + * @throws IOException If an error occurs reading from the source. + * @throws InterruptedException If the thread was interrupted directly or via {@code isCanceled}. + */ + @WorkerThread + public static void cache( + DataSpec dataSpec, + Cache cache, + @Nullable CacheKeyFactory cacheKeyFactory, + DataSource upstream, + @Nullable ProgressListener progressListener, + @Nullable AtomicBoolean isCanceled) + throws IOException, InterruptedException { + cache( + dataSpec, + cache, + cacheKeyFactory, + new CacheDataSource(cache, upstream), + new byte[DEFAULT_BUFFER_SIZE_BYTES], + /* priorityTaskManager= */ null, + /* priority= */ 0, + progressListener, + isCanceled, + /* enableEOFException= */ false); + } + + /** + * Caches the data defined by {@code dataSpec} while skipping already cached data. Caching stops + * early if end of input is reached and {@code enableEOFException} is false. + * + *

If a {@link PriorityTaskManager} is given, it's used to pause and resume caching depending + * on {@code priority} and the priority of other tasks registered to the PriorityTaskManager. + * Please note that it's the responsibility of the calling code to call {@link + * PriorityTaskManager#add} to register with the manager before calling this method, and to call + * {@link PriorityTaskManager#remove} afterwards to unregister. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param dataSpec Defines the data to be cached. + * @param cache A {@link Cache} to store the data. + * @param cacheKeyFactory An optional factory for cache keys. + * @param dataSource A {@link CacheDataSource} that works on the {@code cache}. + * @param buffer The buffer to be used while caching. + * @param priorityTaskManager If not null it's used to check whether it is allowed to proceed with + * caching. + * @param priority The priority of this task. Used with {@code priorityTaskManager}. + * @param progressListener A listener to receive progress updates, or {@code null}. + * @param isCanceled An optional flag that will interrupt caching if set to true. + * @param enableEOFException Whether to throw an {@link EOFException} if end of input has been + * reached unexpectedly. + * @throws IOException If an error occurs reading from the source. + * @throws InterruptedException If the thread was interrupted directly or via {@code isCanceled}. + */ + @WorkerThread + public static void cache( + DataSpec dataSpec, + Cache cache, + @Nullable CacheKeyFactory cacheKeyFactory, + CacheDataSource dataSource, + byte[] buffer, + @Nullable PriorityTaskManager priorityTaskManager, + int priority, + @Nullable ProgressListener progressListener, + @Nullable AtomicBoolean isCanceled, + boolean enableEOFException) + throws IOException, InterruptedException { + Assertions.checkNotNull(dataSource); + Assertions.checkNotNull(buffer); + + String key = buildCacheKey(dataSpec, cacheKeyFactory); + long bytesLeft; + ProgressNotifier progressNotifier = null; + if (progressListener != null) { + progressNotifier = new ProgressNotifier(progressListener); + Pair lengthAndBytesAlreadyCached = getCached(dataSpec, cache, cacheKeyFactory); + progressNotifier.init(lengthAndBytesAlreadyCached.first, lengthAndBytesAlreadyCached.second); + bytesLeft = lengthAndBytesAlreadyCached.first; + } else { + bytesLeft = getRequestLength(dataSpec, cache, key); + } + + long position = dataSpec.absoluteStreamPosition; + boolean lengthUnset = bytesLeft == C.LENGTH_UNSET; + while (bytesLeft != 0) { + throwExceptionIfInterruptedOrCancelled(isCanceled); + long blockLength = + cache.getCachedLength(key, position, lengthUnset ? Long.MAX_VALUE : bytesLeft); + if (blockLength > 0) { + // Skip already cached data. + } else { + // There is a hole in the cache which is at least "-blockLength" long. + blockLength = -blockLength; + long length = blockLength == Long.MAX_VALUE ? C.LENGTH_UNSET : blockLength; + boolean isLastBlock = length == bytesLeft; + long read = + readAndDiscard( + dataSpec, + position, + length, + dataSource, + buffer, + priorityTaskManager, + priority, + progressNotifier, + isLastBlock, + isCanceled); + if (read < blockLength) { + // Reached to the end of the data. + if (enableEOFException && !lengthUnset) { + throw new EOFException(); + } + break; + } + } + position += blockLength; + if (!lengthUnset) { + bytesLeft -= blockLength; + } + } + } + + private static long getRequestLength(DataSpec dataSpec, Cache cache, String key) { + if (dataSpec.length != C.LENGTH_UNSET) { + return dataSpec.length; + } else { + long contentLength = ContentMetadata.getContentLength(cache.getContentMetadata(key)); + return contentLength == C.LENGTH_UNSET + ? C.LENGTH_UNSET + : contentLength - dataSpec.absoluteStreamPosition; + } + } + + /** + * Reads and discards all data specified by the {@code dataSpec}. + * + * @param dataSpec Defines the data to be read. {@code absoluteStreamPosition} and {@code length} + * fields are overwritten by the following parameters. + * @param absoluteStreamPosition The absolute position of the data to be read. + * @param length Length of the data to be read, or {@link C#LENGTH_UNSET} if it is unknown. + * @param dataSource The {@link DataSource} to read the data from. + * @param buffer The buffer to be used while downloading. + * @param priorityTaskManager If not null it's used to check whether it is allowed to proceed with + * caching. + * @param priority The priority of this task. + * @param progressNotifier A notifier through which to report progress updates, or {@code null}. + * @param isLastBlock Whether this read block is the last block of the content. + * @param isCanceled An optional flag that will interrupt caching if set to true. + * @return Number of read bytes, or 0 if no data is available because the end of the opened range + * has been reached. + */ + private static long readAndDiscard( + DataSpec dataSpec, + long absoluteStreamPosition, + long length, + DataSource dataSource, + byte[] buffer, + @Nullable PriorityTaskManager priorityTaskManager, + int priority, + @Nullable ProgressNotifier progressNotifier, + boolean isLastBlock, + @Nullable AtomicBoolean isCanceled) + throws IOException, InterruptedException { + long positionOffset = absoluteStreamPosition - dataSpec.absoluteStreamPosition; + long initialPositionOffset = positionOffset; + long endOffset = length != C.LENGTH_UNSET ? positionOffset + length : C.POSITION_UNSET; + while (true) { + if (priorityTaskManager != null) { + // Wait for any other thread with higher priority to finish its job. + priorityTaskManager.proceed(priority); + } + throwExceptionIfInterruptedOrCancelled(isCanceled); + try { + long resolvedLength = C.LENGTH_UNSET; + boolean isDataSourceOpen = false; + if (endOffset != C.POSITION_UNSET) { + // If a specific length is given, first try to open the data source for that length to + // avoid more data then required to be requested. If the given length exceeds the end of + // input we will get a "position out of range" error. In that case try to open the source + // again with unset length. + try { + resolvedLength = + dataSource.open(dataSpec.subrange(positionOffset, endOffset - positionOffset)); + isDataSourceOpen = true; + } catch (IOException exception) { + if (!isLastBlock || !isCausedByPositionOutOfRange(exception)) { + throw exception; + } + Util.closeQuietly(dataSource); + } + } + if (!isDataSourceOpen) { + resolvedLength = dataSource.open(dataSpec.subrange(positionOffset, C.LENGTH_UNSET)); + } + if (isLastBlock && progressNotifier != null && resolvedLength != C.LENGTH_UNSET) { + progressNotifier.onRequestLengthResolved(positionOffset + resolvedLength); + } + while (positionOffset != endOffset) { + throwExceptionIfInterruptedOrCancelled(isCanceled); + int bytesRead = + dataSource.read( + buffer, + 0, + endOffset != C.POSITION_UNSET + ? (int) Math.min(buffer.length, endOffset - positionOffset) + : buffer.length); + if (bytesRead == C.RESULT_END_OF_INPUT) { + if (progressNotifier != null) { + progressNotifier.onRequestLengthResolved(positionOffset); + } + break; + } + positionOffset += bytesRead; + if (progressNotifier != null) { + progressNotifier.onBytesCached(bytesRead); + } + } + return positionOffset - initialPositionOffset; + } catch (PriorityTaskManager.PriorityTooLowException exception) { + // catch and try again + } finally { + Util.closeQuietly(dataSource); + } + } + } + + /** + * Removes all of the data specified by the {@code dataSpec}. + * + *

This methods blocks until the operation is complete. + * + * @param dataSpec Defines the data to be removed. + * @param cache A {@link Cache} to store the data. + * @param cacheKeyFactory An optional factory for cache keys. + */ + @WorkerThread + public static void remove( + DataSpec dataSpec, Cache cache, @Nullable CacheKeyFactory cacheKeyFactory) { + remove(cache, buildCacheKey(dataSpec, cacheKeyFactory)); + } + + /** + * Removes all of the data specified by the {@code key}. + * + *

This methods blocks until the operation is complete. + * + * @param cache A {@link Cache} to store the data. + * @param key The key whose data should be removed. + */ + @WorkerThread + public static void remove(Cache cache, String key) { + NavigableSet cachedSpans = cache.getCachedSpans(key); + for (CacheSpan cachedSpan : cachedSpans) { + try { + cache.removeSpan(cachedSpan); + } catch (Cache.CacheException e) { + // Do nothing. + } + } + } + + /* package */ static boolean isCausedByPositionOutOfRange(IOException e) { + Throwable cause = e; + while (cause != null) { + if (cause instanceof DataSourceException) { + int reason = ((DataSourceException) cause).reason; + if (reason == DataSourceException.POSITION_OUT_OF_RANGE) { + return true; + } + } + cause = cause.getCause(); + } + return false; + } + + private static String buildCacheKey( + DataSpec dataSpec, @Nullable CacheKeyFactory cacheKeyFactory) { + return (cacheKeyFactory != null ? cacheKeyFactory : DEFAULT_CACHE_KEY_FACTORY) + .buildCacheKey(dataSpec); + } + + private static void throwExceptionIfInterruptedOrCancelled(@Nullable AtomicBoolean isCanceled) + throws InterruptedException { + if (Thread.interrupted() || (isCanceled != null && isCanceled.get())) { + throw new InterruptedException(); + } + } + + private CacheUtil() {} + + private static final class ProgressNotifier { + /** The listener to notify when progress is made. */ + private final ProgressListener listener; + /** The length of the content being cached in bytes, or {@link C#LENGTH_UNSET} if unknown. */ + private long requestLength; + /** The number of bytes that are cached. */ + private long bytesCached; + + public ProgressNotifier(ProgressListener listener) { + this.listener = listener; + } + + public void init(long requestLength, long bytesCached) { + this.requestLength = requestLength; + this.bytesCached = bytesCached; + listener.onProgress(requestLength, bytesCached, /* newBytesCached= */ 0); + } + + public void onRequestLengthResolved(long requestLength) { + if (this.requestLength == C.LENGTH_UNSET && requestLength != C.LENGTH_UNSET) { + this.requestLength = requestLength; + listener.onProgress(requestLength, bytesCached, /* newBytesCached= */ 0); + } + } + + public void onBytesCached(long newBytesCached) { + bytesCached += newBytesCached; + listener.onProgress(requestLength, bytesCached, newBytesCached); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CachedContent.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CachedContent.java new file mode 100644 index 0000000000..660a2a3cb3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CachedContent.java @@ -0,0 +1,208 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import java.io.File; +import java.util.TreeSet; + +/** Defines the cached content for a single stream. */ +/* package */ final class CachedContent { + + private static final String TAG = "CachedContent"; + + /** The cache file id that uniquely identifies the original stream. */ + public final int id; + /** The cache key that uniquely identifies the original stream. */ + public final String key; + /** The cached spans of this content. */ + private final TreeSet cachedSpans; + /** Metadata values. */ + private DefaultContentMetadata metadata; + /** Whether the content is locked. */ + private boolean locked; + + /** + * Creates a CachedContent. + * + * @param id The cache file id. + * @param key The cache stream key. + */ + public CachedContent(int id, String key) { + this(id, key, DefaultContentMetadata.EMPTY); + } + + public CachedContent(int id, String key, DefaultContentMetadata metadata) { + this.id = id; + this.key = key; + this.metadata = metadata; + this.cachedSpans = new TreeSet<>(); + } + + /** Returns the metadata. */ + public DefaultContentMetadata getMetadata() { + return metadata; + } + + /** + * Applies {@code mutations} to the metadata. + * + * @return Whether {@code mutations} changed any metadata. + */ + public boolean applyMetadataMutations(ContentMetadataMutations mutations) { + DefaultContentMetadata oldMetadata = metadata; + metadata = metadata.copyWithMutationsApplied(mutations); + return !metadata.equals(oldMetadata); + } + + /** Returns whether the content is locked. */ + public boolean isLocked() { + return locked; + } + + /** Sets the locked state of the content. */ + public void setLocked(boolean locked) { + this.locked = locked; + } + + /** Adds the given {@link SimpleCacheSpan} which contains a part of the content. */ + public void addSpan(SimpleCacheSpan span) { + cachedSpans.add(span); + } + + /** Returns a set of all {@link SimpleCacheSpan}s. */ + public TreeSet getSpans() { + return cachedSpans; + } + + /** + * Returns the span containing the position. If there isn't one, it returns a hole span + * which defines the maximum extents of the hole in the cache. + */ + public SimpleCacheSpan getSpan(long position) { + SimpleCacheSpan lookupSpan = SimpleCacheSpan.createLookup(key, position); + SimpleCacheSpan floorSpan = cachedSpans.floor(lookupSpan); + if (floorSpan != null && floorSpan.position + floorSpan.length > position) { + return floorSpan; + } + SimpleCacheSpan ceilSpan = cachedSpans.ceiling(lookupSpan); + return ceilSpan == null ? SimpleCacheSpan.createOpenHole(key, position) + : SimpleCacheSpan.createClosedHole(key, position, ceilSpan.position - position); + } + + /** + * Returns the length of the cached data block starting from the {@code position} to the block end + * up to {@code length} bytes. If the {@code position} isn't cached then -(the length of the gap + * to the next cached data up to {@code length} bytes) is returned. + * + * @param position The starting position of the data. + * @param length The maximum length of the data to be returned. + * @return the length of the cached or not cached data block length. + */ + public long getCachedBytesLength(long position, long length) { + SimpleCacheSpan span = getSpan(position); + if (span.isHoleSpan()) { + // We don't have a span covering the start of the queried region. + return -Math.min(span.isOpenEnded() ? Long.MAX_VALUE : span.length, length); + } + long queryEndPosition = position + length; + long currentEndPosition = span.position + span.length; + if (currentEndPosition < queryEndPosition) { + for (SimpleCacheSpan next : cachedSpans.tailSet(span, false)) { + if (next.position > currentEndPosition) { + // There's a hole in the cache within the queried region. + break; + } + // We expect currentEndPosition to always equal (next.position + next.length), but + // perform a max check anyway to guard against the existence of overlapping spans. + currentEndPosition = Math.max(currentEndPosition, next.position + next.length); + if (currentEndPosition >= queryEndPosition) { + // We've found spans covering the queried region. + break; + } + } + } + return Math.min(currentEndPosition - position, length); + } + + /** + * Sets the given span's last touch timestamp. The passed span becomes invalid after this call. + * + * @param cacheSpan Span to be copied and updated. + * @param lastTouchTimestamp The new last touch timestamp. + * @param updateFile Whether the span file should be renamed to have its timestamp match the new + * last touch time. + * @return A span with the updated last touch timestamp. + */ + public SimpleCacheSpan setLastTouchTimestamp( + SimpleCacheSpan cacheSpan, long lastTouchTimestamp, boolean updateFile) { + Assertions.checkState(cachedSpans.remove(cacheSpan)); + File file = cacheSpan.file; + if (updateFile) { + File directory = file.getParentFile(); + long position = cacheSpan.position; + File newFile = SimpleCacheSpan.getCacheFile(directory, id, position, lastTouchTimestamp); + if (file.renameTo(newFile)) { + file = newFile; + } else { + Log.w(TAG, "Failed to rename " + file + " to " + newFile); + } + } + SimpleCacheSpan newCacheSpan = + cacheSpan.copyWithFileAndLastTouchTimestamp(file, lastTouchTimestamp); + cachedSpans.add(newCacheSpan); + return newCacheSpan; + } + + /** Returns whether there are any spans cached. */ + public boolean isEmpty() { + return cachedSpans.isEmpty(); + } + + /** Removes the given span from cache. */ + public boolean removeSpan(CacheSpan span) { + if (cachedSpans.remove(span)) { + span.file.delete(); + return true; + } + return false; + } + + @Override + public int hashCode() { + int result = id; + result = 31 * result + key.hashCode(); + result = 31 * result + metadata.hashCode(); + return result; + } + + @Override + public boolean equals(@Nullable Object o) { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + CachedContent that = (CachedContent) o; + return id == that.id + && key.equals(that.key) + && cachedSpans.equals(that.cachedSpans) + && metadata.equals(that.metadata); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CachedContentIndex.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CachedContentIndex.java new file mode 100644 index 0000000000..ac31e492a2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CachedContentIndex.java @@ -0,0 +1,956 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import android.annotation.SuppressLint; +import android.content.ContentValues; +import android.database.Cursor; +import android.database.SQLException; +import android.database.sqlite.SQLiteDatabase; +import android.database.sqlite.SQLiteException; +import android.util.SparseArray; +import android.util.SparseBooleanArray; +import androidx.annotation.Nullable; +import androidx.annotation.VisibleForTesting; +import androidx.annotation.WorkerThread; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.DatabaseIOException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.DatabaseProvider; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.VersionTable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.AtomicFile; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ReusableBufferedOutputStream; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.BufferedInputStream; +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.DataInputStream; +import java.io.DataOutputStream; +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.security.InvalidAlgorithmParameterException; +import java.security.InvalidKeyException; +import java.security.NoSuchAlgorithmException; +import java.util.Arrays; +import java.util.Collection; +import java.util.HashMap; +import java.util.Map; +import java.util.Random; +import java.util.Set; +import javax.crypto.Cipher; +import javax.crypto.CipherInputStream; +import javax.crypto.CipherOutputStream; +import javax.crypto.NoSuchPaddingException; +import javax.crypto.spec.IvParameterSpec; +import javax.crypto.spec.SecretKeySpec; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** Maintains the index of cached content. */ +/* package */ class CachedContentIndex { + + /* package */ static final String FILE_NAME_ATOMIC = "cached_content_index.exi"; + + private static final int INCREMENTAL_METADATA_READ_LENGTH = 10 * 1024 * 1024; + + private final HashMap keyToContent; + /** + * Maps assigned ids to their corresponding keys. Also contains (id -> null) entries for ids that + * have been removed from the index since it was last stored. This prevents reuse of these ids, + * which is necessary to avoid clashes that could otherwise occur as a result of the sequence: + * + *

[1] (key1, id1) is removed from the in-memory index ... the index is not stored to disk ... + * [2] id1 is reused for a different key2 ... the index is not stored to disk ... [3] A file for + * key2 is partially written using a path corresponding to id1 ... the process is killed before + * the index is stored to disk ... [4] The index is read from disk, causing the partially written + * file to be incorrectly associated to key1 + * + *

By avoiding id reuse in step [2], a new id2 will be used instead. Step [4] will then delete + * the partially written file because the index does not contain an entry for id2. + * + *

When the index is next stored (id -> null) entries are removed, making the ids eligible for + * reuse. + */ + private final SparseArray<@NullableType String> idToKey; + /** + * Tracks ids for which (id -> null) entries are present in idToKey, so that they can be removed + * efficiently when the index is next stored. + */ + private final SparseBooleanArray removedIds; + /** Tracks ids that are new since the index was last stored. */ + private final SparseBooleanArray newIds; + + private Storage storage; + @Nullable private Storage previousStorage; + + /** Returns whether the file is an index file. */ + public static boolean isIndexFile(String fileName) { + // Atomic file backups add additional suffixes to the file name. + return fileName.startsWith(FILE_NAME_ATOMIC); + } + + /** + * Deletes index data for the specified cache. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param databaseProvider Provides the database in which the index is stored. + * @param uid The cache UID. + * @throws DatabaseIOException If an error occurs deleting the index data. + */ + @WorkerThread + public static void delete(DatabaseProvider databaseProvider, long uid) + throws DatabaseIOException { + DatabaseStorage.delete(databaseProvider, uid); + } + + /** + * Creates an instance supporting database storage only. + * + * @param databaseProvider Provides the database in which the index is stored. + */ + public CachedContentIndex(DatabaseProvider databaseProvider) { + this( + databaseProvider, + /* legacyStorageDir= */ null, + /* legacyStorageSecretKey= */ null, + /* legacyStorageEncrypt= */ false, + /* preferLegacyStorage= */ false); + } + + /** + * Creates an instance supporting either or both of database and legacy storage. + * + * @param databaseProvider Provides the database in which the index is stored, or {@code null} to + * use only legacy storage. + * @param legacyStorageDir The directory in which any legacy storage is stored, or {@code null} to + * use only database storage. + * @param legacyStorageSecretKey A 16 byte AES key for reading, and optionally writing, legacy + * storage. + * @param legacyStorageEncrypt Whether to encrypt when writing to legacy storage. Must be false if + * {@code legacyStorageSecretKey} is null. + * @param preferLegacyStorage Whether to use prefer legacy storage if both storage types are + * enabled. This option is only useful for downgrading from database storage back to legacy + * storage. + */ + public CachedContentIndex( + @Nullable DatabaseProvider databaseProvider, + @Nullable File legacyStorageDir, + @Nullable byte[] legacyStorageSecretKey, + boolean legacyStorageEncrypt, + boolean preferLegacyStorage) { + Assertions.checkState(databaseProvider != null || legacyStorageDir != null); + keyToContent = new HashMap<>(); + idToKey = new SparseArray<>(); + removedIds = new SparseBooleanArray(); + newIds = new SparseBooleanArray(); + Storage databaseStorage = + databaseProvider != null ? new DatabaseStorage(databaseProvider) : null; + Storage legacyStorage = + legacyStorageDir != null + ? new LegacyStorage( + new File(legacyStorageDir, FILE_NAME_ATOMIC), + legacyStorageSecretKey, + legacyStorageEncrypt) + : null; + if (databaseStorage == null || (legacyStorage != null && preferLegacyStorage)) { + storage = legacyStorage; + previousStorage = databaseStorage; + } else { + storage = databaseStorage; + previousStorage = legacyStorage; + } + } + + /** + * Loads the index data for the given cache UID. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param uid The UID of the cache whose index is to be loaded. + * @throws IOException If an error occurs initializing the index data. + */ + @WorkerThread + public void initialize(long uid) throws IOException { + storage.initialize(uid); + if (previousStorage != null) { + previousStorage.initialize(uid); + } + if (!storage.exists() && previousStorage != null && previousStorage.exists()) { + // Copy from previous storage into current storage. + previousStorage.load(keyToContent, idToKey); + storage.storeFully(keyToContent); + } else { + // Load from the current storage. + storage.load(keyToContent, idToKey); + } + if (previousStorage != null) { + previousStorage.delete(); + previousStorage = null; + } + } + + /** + * Stores the index data to index file if there is a change. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @throws IOException If an error occurs storing the index data. + */ + @WorkerThread + public void store() throws IOException { + storage.storeIncremental(keyToContent); + // Make ids that were removed since the index was last stored eligible for re-use. + int removedIdCount = removedIds.size(); + for (int i = 0; i < removedIdCount; i++) { + idToKey.remove(removedIds.keyAt(i)); + } + removedIds.clear(); + newIds.clear(); + } + + /** + * Adds the given key to the index if it isn't there already. + * + * @param key The cache key that uniquely identifies the original stream. + * @return A new or existing CachedContent instance with the given key. + */ + public CachedContent getOrAdd(String key) { + CachedContent cachedContent = keyToContent.get(key); + return cachedContent == null ? addNew(key) : cachedContent; + } + + /** Returns a CachedContent instance with the given key or null if there isn't one. */ + public CachedContent get(String key) { + return keyToContent.get(key); + } + + /** + * Returns a Collection of all CachedContent instances in the index. The collection is backed by + * the {@code keyToContent} map, so changes to the map are reflected in the collection, and + * vice-versa. If the map is modified while an iteration over the collection is in progress + * (except through the iterator's own remove operation), the results of the iteration are + * undefined. + */ + public Collection getAll() { + return keyToContent.values(); + } + + /** Returns an existing or new id assigned to the given key. */ + public int assignIdForKey(String key) { + return getOrAdd(key).id; + } + + /** Returns the key which has the given id assigned. */ + public String getKeyForId(int id) { + return idToKey.get(id); + } + + /** Removes {@link CachedContent} with the given key from index if it's empty and not locked. */ + public void maybeRemove(String key) { + CachedContent cachedContent = keyToContent.get(key); + if (cachedContent != null && cachedContent.isEmpty() && !cachedContent.isLocked()) { + keyToContent.remove(key); + int id = cachedContent.id; + boolean neverStored = newIds.get(id); + storage.onRemove(cachedContent, neverStored); + if (neverStored) { + // The id can be reused immediately. + idToKey.remove(id); + newIds.delete(id); + } else { + // Keep an entry in idToKey to stop the id from being reused until the index is next stored, + // and add an entry to removedIds to track that it should be removed when this does happen. + idToKey.put(id, /* value= */ null); + removedIds.put(id, /* value= */ true); + } + } + } + + /** Removes empty and not locked {@link CachedContent} instances from index. */ + public void removeEmpty() { + String[] keys = new String[keyToContent.size()]; + keyToContent.keySet().toArray(keys); + for (String key : keys) { + maybeRemove(key); + } + } + + /** + * Returns a set of all content keys. The set is backed by the {@code keyToContent} map, so + * changes to the map are reflected in the set, and vice-versa. If the map is modified while an + * iteration over the set is in progress (except through the iterator's own remove operation), the + * results of the iteration are undefined. + */ + public Set getKeys() { + return keyToContent.keySet(); + } + + /** + * Applies {@code mutations} to the {@link ContentMetadata} for the given key. A new {@link + * CachedContent} is added if there isn't one already with the given key. + */ + public void applyContentMetadataMutations(String key, ContentMetadataMutations mutations) { + CachedContent cachedContent = getOrAdd(key); + if (cachedContent.applyMetadataMutations(mutations)) { + storage.onUpdate(cachedContent); + } + } + + /** Returns a {@link ContentMetadata} for the given key. */ + public ContentMetadata getContentMetadata(String key) { + CachedContent cachedContent = get(key); + return cachedContent != null ? cachedContent.getMetadata() : DefaultContentMetadata.EMPTY; + } + + private CachedContent addNew(String key) { + int id = getNewId(idToKey); + CachedContent cachedContent = new CachedContent(id, key); + keyToContent.put(key, cachedContent); + idToKey.put(id, key); + newIds.put(id, true); + storage.onUpdate(cachedContent); + return cachedContent; + } + + @SuppressLint("GetInstance") // Suppress warning about specifying "BC" as an explicit provider. + private static Cipher getCipher() throws NoSuchPaddingException, NoSuchAlgorithmException { + // Workaround for https://issuetracker.google.com/issues/36976726 + if (Util.SDK_INT == 18) { + try { + return Cipher.getInstance("AES/CBC/PKCS5PADDING", "BC"); + } catch (Throwable ignored) { + // ignored + } + } + return Cipher.getInstance("AES/CBC/PKCS5PADDING"); + } + + /** + * Returns an id which isn't used in the given array. If the maximum id in the array is smaller + * than {@link java.lang.Integer#MAX_VALUE} it just returns the next bigger integer. Otherwise it + * returns the smallest unused non-negative integer. + */ + @VisibleForTesting + /* package */ static int getNewId(SparseArray idToKey) { + int size = idToKey.size(); + int id = size == 0 ? 0 : (idToKey.keyAt(size - 1) + 1); + if (id < 0) { // In case if we pass max int value. + // TODO optimization: defragmentation or binary search? + for (id = 0; id < size; id++) { + if (id != idToKey.keyAt(id)) { + break; + } + } + } + return id; + } + + /** + * Deserializes a {@link DefaultContentMetadata} from the given input stream. + * + * @param input Input stream to read from. + * @return a {@link DefaultContentMetadata} instance. + * @throws IOException If an error occurs during reading from the input. + */ + private static DefaultContentMetadata readContentMetadata(DataInputStream input) + throws IOException { + int size = input.readInt(); + HashMap metadata = new HashMap<>(); + for (int i = 0; i < size; i++) { + String name = input.readUTF(); + int valueSize = input.readInt(); + if (valueSize < 0) { + throw new IOException("Invalid value size: " + valueSize); + } + // Grow the array incrementally to avoid OutOfMemoryError in the case that a corrupt (and very + // large) valueSize was read. In such cases the implementation below is expected to throw + // IOException from one of the readFully calls, due to the end of the input being reached. + int bytesRead = 0; + int nextBytesToRead = Math.min(valueSize, INCREMENTAL_METADATA_READ_LENGTH); + byte[] value = Util.EMPTY_BYTE_ARRAY; + while (bytesRead != valueSize) { + value = Arrays.copyOf(value, bytesRead + nextBytesToRead); + input.readFully(value, bytesRead, nextBytesToRead); + bytesRead += nextBytesToRead; + nextBytesToRead = Math.min(valueSize - bytesRead, INCREMENTAL_METADATA_READ_LENGTH); + } + metadata.put(name, value); + } + return new DefaultContentMetadata(metadata); + } + + /** + * Serializes itself to a {@link DataOutputStream}. + * + * @param output Output stream to store the values. + * @throws IOException If an error occurs writing to the output. + */ + private static void writeContentMetadata(DefaultContentMetadata metadata, DataOutputStream output) + throws IOException { + Set> entrySet = metadata.entrySet(); + output.writeInt(entrySet.size()); + for (Map.Entry entry : entrySet) { + output.writeUTF(entry.getKey()); + byte[] value = entry.getValue(); + output.writeInt(value.length); + output.write(value); + } + } + + /** Interface for the persistent index. */ + private interface Storage { + + /** Initializes the storage for the given cache UID. */ + void initialize(long uid); + + /** + * Returns whether the persisted index exists. + * + * @throws IOException If an error occurs determining whether the persisted index exists. + */ + boolean exists() throws IOException; + + /** + * Deletes the persisted index. + * + * @throws IOException If an error occurs deleting the index. + */ + void delete() throws IOException; + + /** + * Loads the persisted index into {@code content} and {@code idToKey}, creating it if it doesn't + * already exist. + * + *

If the persisted index is in a permanently bad state (i.e. all further attempts to load it + * are also expected to fail) then it will be deleted and the call will return successfully. For + * transient failures, {@link IOException} will be thrown. + * + * @param content The key to content map to populate with persisted data. + * @param idToKey The id to key map to populate with persisted data. + * @throws IOException If an error occurs loading the index. + */ + void load(HashMap content, SparseArray<@NullableType String> idToKey) + throws IOException; + + /** + * Writes the persisted index, creating it if it doesn't already exist and replacing any + * existing content if it does. + * + * @param content The key to content map to persist. + * @throws IOException If an error occurs persisting the index. + */ + void storeFully(HashMap content) throws IOException; + + /** + * Ensures incremental changes to the index since the initial {@link #initialize(long)} or last + * {@link #storeFully(HashMap)} are persisted. The storage will have been notified of all such + * changes via {@link #onUpdate(CachedContent)} and {@link #onRemove(CachedContent, boolean)}. + * + * @param content The key to content map to persist. + * @throws IOException If an error occurs persisting the index. + */ + void storeIncremental(HashMap content) throws IOException; + + /** + * Called when a {@link CachedContent} is added or updated. + * + * @param cachedContent The updated {@link CachedContent}. + */ + void onUpdate(CachedContent cachedContent); + + /** + * Called when a {@link CachedContent} is removed. + * + * @param cachedContent The removed {@link CachedContent}. + * @param neverStored True if the {@link CachedContent} was added more recently than when the + * index was last stored. + */ + void onRemove(CachedContent cachedContent, boolean neverStored); + } + + /** {@link Storage} implementation that uses an {@link AtomicFile}. */ + private static class LegacyStorage implements Storage { + + private static final int VERSION = 2; + private static final int VERSION_METADATA_INTRODUCED = 2; + private static final int FLAG_ENCRYPTED_INDEX = 1; + + private final boolean encrypt; + @Nullable private final Cipher cipher; + @Nullable private final SecretKeySpec secretKeySpec; + @Nullable private final Random random; + private final AtomicFile atomicFile; + + private boolean changed; + @Nullable private ReusableBufferedOutputStream bufferedOutputStream; + + public LegacyStorage(File file, @Nullable byte[] secretKey, boolean encrypt) { + Cipher cipher = null; + SecretKeySpec secretKeySpec = null; + if (secretKey != null) { + Assertions.checkArgument(secretKey.length == 16); + try { + cipher = getCipher(); + secretKeySpec = new SecretKeySpec(secretKey, "AES"); + } catch (NoSuchAlgorithmException | NoSuchPaddingException e) { + throw new IllegalStateException(e); // Should never happen. + } + } else { + Assertions.checkArgument(!encrypt); + } + this.encrypt = encrypt; + this.cipher = cipher; + this.secretKeySpec = secretKeySpec; + random = encrypt ? new Random() : null; + atomicFile = new AtomicFile(file); + } + + @Override + public void initialize(long uid) { + // Do nothing. Legacy storage uses a separate file for each cache. + } + + @Override + public boolean exists() { + return atomicFile.exists(); + } + + @Override + public void delete() { + atomicFile.delete(); + } + + @Override + public void load( + HashMap content, SparseArray<@NullableType String> idToKey) { + Assertions.checkState(!changed); + if (!readFile(content, idToKey)) { + content.clear(); + idToKey.clear(); + atomicFile.delete(); + } + } + + @Override + public void storeFully(HashMap content) throws IOException { + writeFile(content); + changed = false; + } + + @Override + public void storeIncremental(HashMap content) throws IOException { + if (!changed) { + return; + } + storeFully(content); + } + + @Override + public void onUpdate(CachedContent cachedContent) { + changed = true; + } + + @Override + public void onRemove(CachedContent cachedContent, boolean neverStored) { + changed = true; + } + + private boolean readFile( + HashMap content, SparseArray<@NullableType String> idToKey) { + if (!atomicFile.exists()) { + return true; + } + + DataInputStream input = null; + try { + InputStream inputStream = new BufferedInputStream(atomicFile.openRead()); + input = new DataInputStream(inputStream); + int version = input.readInt(); + if (version < 0 || version > VERSION) { + return false; + } + + int flags = input.readInt(); + if ((flags & FLAG_ENCRYPTED_INDEX) != 0) { + if (cipher == null) { + return false; + } + byte[] initializationVector = new byte[16]; + input.readFully(initializationVector); + IvParameterSpec ivParameterSpec = new IvParameterSpec(initializationVector); + try { + cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParameterSpec); + } catch (InvalidKeyException | InvalidAlgorithmParameterException e) { + throw new IllegalStateException(e); + } + input = new DataInputStream(new CipherInputStream(inputStream, cipher)); + } else if (encrypt) { + changed = true; // Force index to be rewritten encrypted after read. + } + + int count = input.readInt(); + int hashCode = 0; + for (int i = 0; i < count; i++) { + CachedContent cachedContent = readCachedContent(version, input); + content.put(cachedContent.key, cachedContent); + idToKey.put(cachedContent.id, cachedContent.key); + hashCode += hashCachedContent(cachedContent, version); + } + int fileHashCode = input.readInt(); + boolean isEOF = input.read() == -1; + if (fileHashCode != hashCode || !isEOF) { + return false; + } + } catch (IOException e) { + return false; + } finally { + if (input != null) { + Util.closeQuietly(input); + } + } + return true; + } + + private void writeFile(HashMap content) throws IOException { + DataOutputStream output = null; + try { + OutputStream outputStream = atomicFile.startWrite(); + if (bufferedOutputStream == null) { + bufferedOutputStream = new ReusableBufferedOutputStream(outputStream); + } else { + bufferedOutputStream.reset(outputStream); + } + output = new DataOutputStream(bufferedOutputStream); + output.writeInt(VERSION); + + int flags = encrypt ? FLAG_ENCRYPTED_INDEX : 0; + output.writeInt(flags); + + if (encrypt) { + byte[] initializationVector = new byte[16]; + random.nextBytes(initializationVector); + output.write(initializationVector); + IvParameterSpec ivParameterSpec = new IvParameterSpec(initializationVector); + try { + cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivParameterSpec); + } catch (InvalidKeyException | InvalidAlgorithmParameterException e) { + throw new IllegalStateException(e); // Should never happen. + } + output.flush(); + output = new DataOutputStream(new CipherOutputStream(bufferedOutputStream, cipher)); + } + + output.writeInt(content.size()); + int hashCode = 0; + for (CachedContent cachedContent : content.values()) { + writeCachedContent(cachedContent, output); + hashCode += hashCachedContent(cachedContent, VERSION); + } + output.writeInt(hashCode); + atomicFile.endWrite(output); + // Avoid calling close twice. Duplicate CipherOutputStream.close calls did + // not used to be no-ops: https://android-review.googlesource.com/#/c/272799/ + output = null; + } finally { + Util.closeQuietly(output); + } + } + + /** + * Calculates a hash code for a {@link CachedContent} which is compatible with a particular + * index version. + */ + private int hashCachedContent(CachedContent cachedContent, int version) { + int result = cachedContent.id; + result = 31 * result + cachedContent.key.hashCode(); + if (version < VERSION_METADATA_INTRODUCED) { + long length = ContentMetadata.getContentLength(cachedContent.getMetadata()); + result = 31 * result + (int) (length ^ (length >>> 32)); + } else { + result = 31 * result + cachedContent.getMetadata().hashCode(); + } + return result; + } + + /** + * Reads a {@link CachedContent} from a {@link DataInputStream}. + * + * @param version Version of the encoded data. + * @param input Input stream containing values needed to initialize CachedContent instance. + * @throws IOException If an error occurs during reading values. + */ + private CachedContent readCachedContent(int version, DataInputStream input) throws IOException { + int id = input.readInt(); + String key = input.readUTF(); + DefaultContentMetadata metadata; + if (version < VERSION_METADATA_INTRODUCED) { + long length = input.readLong(); + ContentMetadataMutations mutations = new ContentMetadataMutations(); + ContentMetadataMutations.setContentLength(mutations, length); + metadata = DefaultContentMetadata.EMPTY.copyWithMutationsApplied(mutations); + } else { + metadata = readContentMetadata(input); + } + return new CachedContent(id, key, metadata); + } + + /** + * Writes a {@link CachedContent} to a {@link DataOutputStream}. + * + * @param output Output stream to store the values. + * @throws IOException If an error occurs during writing values to output. + */ + private void writeCachedContent(CachedContent cachedContent, DataOutputStream output) + throws IOException { + output.writeInt(cachedContent.id); + output.writeUTF(cachedContent.key); + writeContentMetadata(cachedContent.getMetadata(), output); + } + } + + /** {@link Storage} implementation that uses an SQL database. */ + private static final class DatabaseStorage implements Storage { + + private static final String TABLE_PREFIX = DatabaseProvider.TABLE_PREFIX + "CacheIndex"; + private static final int TABLE_VERSION = 1; + + private static final String COLUMN_ID = "id"; + private static final String COLUMN_KEY = "key"; + private static final String COLUMN_METADATA = "metadata"; + + private static final int COLUMN_INDEX_ID = 0; + private static final int COLUMN_INDEX_KEY = 1; + private static final int COLUMN_INDEX_METADATA = 2; + + private static final String WHERE_ID_EQUALS = COLUMN_ID + " = ?"; + + private static final String[] COLUMNS = new String[] {COLUMN_ID, COLUMN_KEY, COLUMN_METADATA}; + private static final String TABLE_SCHEMA = + "(" + + COLUMN_ID + + " INTEGER PRIMARY KEY NOT NULL," + + COLUMN_KEY + + " TEXT NOT NULL," + + COLUMN_METADATA + + " BLOB NOT NULL)"; + + private final DatabaseProvider databaseProvider; + private final SparseArray pendingUpdates; + + private String hexUid; + private String tableName; + + public static void delete(DatabaseProvider databaseProvider, long uid) + throws DatabaseIOException { + delete(databaseProvider, Long.toHexString(uid)); + } + + public DatabaseStorage(DatabaseProvider databaseProvider) { + this.databaseProvider = databaseProvider; + pendingUpdates = new SparseArray<>(); + } + + @Override + public void initialize(long uid) { + hexUid = Long.toHexString(uid); + tableName = getTableName(hexUid); + } + + @Override + public boolean exists() throws DatabaseIOException { + return VersionTable.getVersion( + databaseProvider.getReadableDatabase(), + VersionTable.FEATURE_CACHE_CONTENT_METADATA, + hexUid) + != VersionTable.VERSION_UNSET; + } + + @Override + public void delete() throws DatabaseIOException { + delete(databaseProvider, hexUid); + } + + @Override + public void load( + HashMap content, SparseArray<@NullableType String> idToKey) + throws IOException { + Assertions.checkState(pendingUpdates.size() == 0); + try { + int version = + VersionTable.getVersion( + databaseProvider.getReadableDatabase(), + VersionTable.FEATURE_CACHE_CONTENT_METADATA, + hexUid); + if (version != TABLE_VERSION) { + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.beginTransactionNonExclusive(); + try { + initializeTable(writableDatabase); + writableDatabase.setTransactionSuccessful(); + } finally { + writableDatabase.endTransaction(); + } + } + + try (Cursor cursor = getCursor()) { + while (cursor.moveToNext()) { + int id = cursor.getInt(COLUMN_INDEX_ID); + String key = cursor.getString(COLUMN_INDEX_KEY); + byte[] metadataBytes = cursor.getBlob(COLUMN_INDEX_METADATA); + + ByteArrayInputStream inputStream = new ByteArrayInputStream(metadataBytes); + DataInputStream input = new DataInputStream(inputStream); + DefaultContentMetadata metadata = readContentMetadata(input); + + CachedContent cachedContent = new CachedContent(id, key, metadata); + content.put(cachedContent.key, cachedContent); + idToKey.put(cachedContent.id, cachedContent.key); + } + } + } catch (SQLiteException e) { + content.clear(); + idToKey.clear(); + throw new DatabaseIOException(e); + } + } + + @Override + public void storeFully(HashMap content) throws IOException { + try { + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.beginTransactionNonExclusive(); + try { + initializeTable(writableDatabase); + for (CachedContent cachedContent : content.values()) { + addOrUpdateRow(writableDatabase, cachedContent); + } + writableDatabase.setTransactionSuccessful(); + pendingUpdates.clear(); + } finally { + writableDatabase.endTransaction(); + } + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + @Override + public void storeIncremental(HashMap content) throws IOException { + if (pendingUpdates.size() == 0) { + return; + } + try { + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.beginTransactionNonExclusive(); + try { + for (int i = 0; i < pendingUpdates.size(); i++) { + CachedContent cachedContent = pendingUpdates.valueAt(i); + if (cachedContent == null) { + deleteRow(writableDatabase, pendingUpdates.keyAt(i)); + } else { + addOrUpdateRow(writableDatabase, cachedContent); + } + } + writableDatabase.setTransactionSuccessful(); + pendingUpdates.clear(); + } finally { + writableDatabase.endTransaction(); + } + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + @Override + public void onUpdate(CachedContent cachedContent) { + pendingUpdates.put(cachedContent.id, cachedContent); + } + + @Override + public void onRemove(CachedContent cachedContent, boolean neverStored) { + if (neverStored) { + pendingUpdates.delete(cachedContent.id); + } else { + pendingUpdates.put(cachedContent.id, null); + } + } + + private Cursor getCursor() { + return databaseProvider + .getReadableDatabase() + .query( + tableName, + COLUMNS, + /* selection= */ null, + /* selectionArgs= */ null, + /* groupBy= */ null, + /* having= */ null, + /* orderBy= */ null); + } + + private void initializeTable(SQLiteDatabase writableDatabase) throws DatabaseIOException { + VersionTable.setVersion( + writableDatabase, VersionTable.FEATURE_CACHE_CONTENT_METADATA, hexUid, TABLE_VERSION); + dropTable(writableDatabase, tableName); + writableDatabase.execSQL("CREATE TABLE " + tableName + " " + TABLE_SCHEMA); + } + + private void deleteRow(SQLiteDatabase writableDatabase, int key) { + writableDatabase.delete(tableName, WHERE_ID_EQUALS, new String[] {Integer.toString(key)}); + } + + private void addOrUpdateRow(SQLiteDatabase writableDatabase, CachedContent cachedContent) + throws IOException { + ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); + writeContentMetadata(cachedContent.getMetadata(), new DataOutputStream(outputStream)); + byte[] data = outputStream.toByteArray(); + + ContentValues values = new ContentValues(); + values.put(COLUMN_ID, cachedContent.id); + values.put(COLUMN_KEY, cachedContent.key); + values.put(COLUMN_METADATA, data); + writableDatabase.replaceOrThrow(tableName, /* nullColumnHack= */ null, values); + } + + private static void delete(DatabaseProvider databaseProvider, String hexUid) + throws DatabaseIOException { + try { + String tableName = getTableName(hexUid); + SQLiteDatabase writableDatabase = databaseProvider.getWritableDatabase(); + writableDatabase.beginTransactionNonExclusive(); + try { + VersionTable.removeVersion( + writableDatabase, VersionTable.FEATURE_CACHE_CONTENT_METADATA, hexUid); + dropTable(writableDatabase, tableName); + writableDatabase.setTransactionSuccessful(); + } finally { + writableDatabase.endTransaction(); + } + } catch (SQLException e) { + throw new DatabaseIOException(e); + } + } + + private static void dropTable(SQLiteDatabase writableDatabase, String tableName) { + writableDatabase.execSQL("DROP TABLE IF EXISTS " + tableName); + } + + private static String getTableName(String hexUid) { + return TABLE_PREFIX + hexUid; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CachedRegionTracker.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CachedRegionTracker.java new file mode 100644 index 0000000000..9b08301ab8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/CachedRegionTracker.java @@ -0,0 +1,204 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import androidx.annotation.NonNull; +import org.mozilla.thirdparty.com.google.android.exoplayer2.extractor.ChunkIndex; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; +import java.util.Iterator; +import java.util.NavigableSet; +import java.util.TreeSet; + +/** + * Utility class for efficiently tracking regions of data that are stored in a {@link Cache} + * for a given cache key. + */ +public final class CachedRegionTracker implements Cache.Listener { + + private static final String TAG = "CachedRegionTracker"; + + public static final int NOT_CACHED = -1; + public static final int CACHED_TO_END = -2; + + private final Cache cache; + private final String cacheKey; + private final ChunkIndex chunkIndex; + + private final TreeSet regions; + private final Region lookupRegion; + + public CachedRegionTracker(Cache cache, String cacheKey, ChunkIndex chunkIndex) { + this.cache = cache; + this.cacheKey = cacheKey; + this.chunkIndex = chunkIndex; + this.regions = new TreeSet<>(); + this.lookupRegion = new Region(0, 0); + + synchronized (this) { + NavigableSet cacheSpans = cache.addListener(cacheKey, this); + // Merge the spans into regions. mergeSpan is more efficient when merging from high to low, + // which is why a descending iterator is used here. + Iterator spanIterator = cacheSpans.descendingIterator(); + while (spanIterator.hasNext()) { + CacheSpan span = spanIterator.next(); + mergeSpan(span); + } + } + } + + public void release() { + cache.removeListener(cacheKey, this); + } + + /** + * When provided with a byte offset, this method locates the cached region within which the + * offset falls, and returns the approximate end position in milliseconds of that region. If the + * byte offset does not fall within a cached region then {@link #NOT_CACHED} is returned. + * If the cached region extends to the end of the stream, {@link #CACHED_TO_END} is returned. + * + * @param byteOffset The byte offset in the underlying stream. + * @return The end position of the corresponding cache region, {@link #NOT_CACHED}, or + * {@link #CACHED_TO_END}. + */ + public synchronized int getRegionEndTimeMs(long byteOffset) { + lookupRegion.startOffset = byteOffset; + Region floorRegion = regions.floor(lookupRegion); + if (floorRegion == null || byteOffset > floorRegion.endOffset + || floorRegion.endOffsetIndex == -1) { + return NOT_CACHED; + } + int index = floorRegion.endOffsetIndex; + if (index == chunkIndex.length - 1 + && floorRegion.endOffset == (chunkIndex.offsets[index] + chunkIndex.sizes[index])) { + return CACHED_TO_END; + } + long segmentFractionUs = (chunkIndex.durationsUs[index] + * (floorRegion.endOffset - chunkIndex.offsets[index])) / chunkIndex.sizes[index]; + return (int) ((chunkIndex.timesUs[index] + segmentFractionUs) / 1000); + } + + @Override + public synchronized void onSpanAdded(Cache cache, CacheSpan span) { + mergeSpan(span); + } + + @Override + public synchronized void onSpanRemoved(Cache cache, CacheSpan span) { + Region removedRegion = new Region(span.position, span.position + span.length); + + // Look up a region this span falls into. + Region floorRegion = regions.floor(removedRegion); + if (floorRegion == null) { + Log.e(TAG, "Removed a span we were not aware of"); + return; + } + + // Remove it. + regions.remove(floorRegion); + + // Add new floor and ceiling regions, if necessary. + if (floorRegion.startOffset < removedRegion.startOffset) { + Region newFloorRegion = new Region(floorRegion.startOffset, removedRegion.startOffset); + + int index = Arrays.binarySearch(chunkIndex.offsets, newFloorRegion.endOffset); + newFloorRegion.endOffsetIndex = index < 0 ? -index - 2 : index; + regions.add(newFloorRegion); + } + + if (floorRegion.endOffset > removedRegion.endOffset) { + Region newCeilingRegion = new Region(removedRegion.endOffset + 1, floorRegion.endOffset); + newCeilingRegion.endOffsetIndex = floorRegion.endOffsetIndex; + regions.add(newCeilingRegion); + } + } + + @Override + public void onSpanTouched(Cache cache, CacheSpan oldSpan, CacheSpan newSpan) { + // Do nothing. + } + + private void mergeSpan(CacheSpan span) { + Region newRegion = new Region(span.position, span.position + span.length); + Region floorRegion = regions.floor(newRegion); + Region ceilingRegion = regions.ceiling(newRegion); + boolean floorConnects = regionsConnect(floorRegion, newRegion); + boolean ceilingConnects = regionsConnect(newRegion, ceilingRegion); + + if (ceilingConnects) { + if (floorConnects) { + // Extend floorRegion to cover both newRegion and ceilingRegion. + floorRegion.endOffset = ceilingRegion.endOffset; + floorRegion.endOffsetIndex = ceilingRegion.endOffsetIndex; + } else { + // Extend newRegion to cover ceilingRegion. Add it. + newRegion.endOffset = ceilingRegion.endOffset; + newRegion.endOffsetIndex = ceilingRegion.endOffsetIndex; + regions.add(newRegion); + } + regions.remove(ceilingRegion); + } else if (floorConnects) { + // Extend floorRegion to the right to cover newRegion. + floorRegion.endOffset = newRegion.endOffset; + int index = floorRegion.endOffsetIndex; + while (index < chunkIndex.length - 1 + && (chunkIndex.offsets[index + 1] <= floorRegion.endOffset)) { + index++; + } + floorRegion.endOffsetIndex = index; + } else { + // This is a new region. + int index = Arrays.binarySearch(chunkIndex.offsets, newRegion.endOffset); + newRegion.endOffsetIndex = index < 0 ? -index - 2 : index; + regions.add(newRegion); + } + } + + private boolean regionsConnect(Region lower, Region upper) { + return lower != null && upper != null && lower.endOffset == upper.startOffset; + } + + private static class Region implements Comparable { + + /** + * The first byte of the region (inclusive). + */ + public long startOffset; + /** + * End offset of the region (exclusive). + */ + public long endOffset; + /** + * The index in chunkIndex that contains the end offset. May be -1 if the end offset comes + * before the start of the first media chunk (i.e. if the end offset is within the stream + * header). + */ + public int endOffsetIndex; + + public Region(long position, long endOffset) { + this.startOffset = position; + this.endOffset = endOffset; + } + + @Override + public int compareTo(@NonNull Region another) { + return Util.compareLong(startOffset, another.startOffset); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/ContentMetadata.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/ContentMetadata.java new file mode 100644 index 0000000000..aa34823043 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/ContentMetadata.java @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; + +/** + * Interface for an immutable snapshot of keyed metadata. + */ +public interface ContentMetadata { + + /** + * Prefix for custom metadata keys. Applications can use keys starting with this prefix without + * any risk of their keys colliding with ones defined by the ExoPlayer library. + */ + @SuppressWarnings("unused") + String KEY_CUSTOM_PREFIX = "custom_"; + /** Key for redirected uri (type: String). */ + String KEY_REDIRECTED_URI = "exo_redir"; + /** Key for content length in bytes (type: long). */ + String KEY_CONTENT_LENGTH = "exo_len"; + + /** + * Returns a metadata value. + * + * @param key Key of the metadata to be returned. + * @param defaultValue Value to return if the metadata doesn't exist. + * @return The metadata value. + */ + @Nullable + byte[] get(String key, @Nullable byte[] defaultValue); + + /** + * Returns a metadata value. + * + * @param key Key of the metadata to be returned. + * @param defaultValue Value to return if the metadata doesn't exist. + * @return The metadata value. + */ + @Nullable + String get(String key, @Nullable String defaultValue); + + /** + * Returns a metadata value. + * + * @param key Key of the metadata to be returned. + * @param defaultValue Value to return if the metadata doesn't exist. + * @return The metadata value. + */ + long get(String key, long defaultValue); + + /** Returns whether the metadata is available. */ + boolean contains(String key); + + /** + * Returns the value stored under {@link #KEY_CONTENT_LENGTH}, or {@link C#LENGTH_UNSET} if not + * set. + */ + static long getContentLength(ContentMetadata contentMetadata) { + return contentMetadata.get(KEY_CONTENT_LENGTH, C.LENGTH_UNSET); + } + + /** + * Returns the value stored under {@link #KEY_REDIRECTED_URI} as a {@link Uri}, or {code null} if + * not set. + */ + @Nullable + static Uri getRedirectedUri(ContentMetadata contentMetadata) { + String redirectedUri = contentMetadata.get(KEY_REDIRECTED_URI, (String) null); + return redirectedUri == null ? null : Uri.parse(redirectedUri); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/ContentMetadataMutations.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/ContentMetadataMutations.java new file mode 100644 index 0000000000..c7a8d9f711 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/ContentMetadataMutations.java @@ -0,0 +1,145 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Map.Entry; + +/** + * Defines multiple mutations on metadata value which are applied atomically. This class isn't + * thread safe. + */ +public class ContentMetadataMutations { + + /** + * Adds a mutation to set the {@link ContentMetadata#KEY_CONTENT_LENGTH} value, or to remove any + * existing value if {@link C#LENGTH_UNSET} is passed. + * + * @param mutations The mutations to modify. + * @param length The length value, or {@link C#LENGTH_UNSET} to remove any existing entry. + * @return The mutations instance, for convenience. + */ + public static ContentMetadataMutations setContentLength( + ContentMetadataMutations mutations, long length) { + return mutations.set(ContentMetadata.KEY_CONTENT_LENGTH, length); + } + + /** + * Adds a mutation to set the {@link ContentMetadata#KEY_REDIRECTED_URI} value, or to remove any + * existing entry if {@code null} is passed. + * + * @param mutations The mutations to modify. + * @param uri The {@link Uri} value, or {@code null} to remove any existing entry. + * @return The mutations instance, for convenience. + */ + public static ContentMetadataMutations setRedirectedUri( + ContentMetadataMutations mutations, @Nullable Uri uri) { + if (uri == null) { + return mutations.remove(ContentMetadata.KEY_REDIRECTED_URI); + } else { + return mutations.set(ContentMetadata.KEY_REDIRECTED_URI, uri.toString()); + } + } + + private final Map editedValues; + private final List removedValues; + + /** Constructs a DefaultMetadataMutations. */ + public ContentMetadataMutations() { + editedValues = new HashMap<>(); + removedValues = new ArrayList<>(); + } + + /** + * Adds a mutation to set a metadata value. Passing {@code null} as {@code name} or {@code value} + * isn't allowed. + * + * @param name The name of the metadata value. + * @param value The value to be set. + * @return This instance, for convenience. + */ + public ContentMetadataMutations set(String name, String value) { + return checkAndSet(name, value); + } + + /** + * Adds a mutation to set a metadata value. Passing {@code null} as {@code name} isn't allowed. + * + * @param name The name of the metadata value. + * @param value The value to be set. + * @return This instance, for convenience. + */ + public ContentMetadataMutations set(String name, long value) { + return checkAndSet(name, value); + } + + /** + * Adds a mutation to set a metadata value. Passing {@code null} as {@code name} or {@code value} + * isn't allowed. + * + * @param name The name of the metadata value. + * @param value The value to be set. + * @return This instance, for convenience. + */ + public ContentMetadataMutations set(String name, byte[] value) { + return checkAndSet(name, Arrays.copyOf(value, value.length)); + } + + /** + * Adds a mutation to remove a metadata value. + * + * @param name The name of the metadata value. + * @return This instance, for convenience. + */ + public ContentMetadataMutations remove(String name) { + removedValues.add(name); + editedValues.remove(name); + return this; + } + + /** Returns a list of names of metadata values to be removed. */ + public List getRemovedValues() { + return Collections.unmodifiableList(new ArrayList<>(removedValues)); + } + + /** Returns a map of metadata name, value pairs to be set. Values are copied. */ + public Map getEditedValues() { + HashMap hashMap = new HashMap<>(editedValues); + for (Entry entry : hashMap.entrySet()) { + Object value = entry.getValue(); + if (value instanceof byte[]) { + byte[] bytes = (byte[]) value; + entry.setValue(Arrays.copyOf(bytes, bytes.length)); + } + } + return Collections.unmodifiableMap(hashMap); + } + + private ContentMetadataMutations checkAndSet(String name, Object value) { + editedValues.put(Assertions.checkNotNull(name), Assertions.checkNotNull(value)); + removedValues.remove(name); + return this; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/DefaultContentMetadata.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/DefaultContentMetadata.java new file mode 100644 index 0000000000..2602f834e7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/DefaultContentMetadata.java @@ -0,0 +1,173 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.nio.ByteBuffer; +import java.nio.charset.Charset; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Map.Entry; +import java.util.Set; + +/** Default implementation of {@link ContentMetadata}. Values are stored as byte arrays. */ +public final class DefaultContentMetadata implements ContentMetadata { + + /** An empty DefaultContentMetadata. */ + public static final DefaultContentMetadata EMPTY = + new DefaultContentMetadata(Collections.emptyMap()); + + private int hashCode; + + private final Map metadata; + + public DefaultContentMetadata() { + this(Collections.emptyMap()); + } + + /** @param metadata The metadata entries in their raw byte array form. */ + public DefaultContentMetadata(Map metadata) { + this.metadata = Collections.unmodifiableMap(metadata); + } + + /** + * Returns a copy {@link DefaultContentMetadata} with {@code mutations} applied. If {@code + * mutations} don't change anything, returns this instance. + */ + public DefaultContentMetadata copyWithMutationsApplied(ContentMetadataMutations mutations) { + Map mutatedMetadata = applyMutations(metadata, mutations); + if (isMetadataEqual(metadata, mutatedMetadata)) { + return this; + } + return new DefaultContentMetadata(mutatedMetadata); + } + + /** Returns the set of metadata entries in their raw byte array form. */ + public Set> entrySet() { + return metadata.entrySet(); + } + + @Override + @Nullable + public final byte[] get(String name, @Nullable byte[] defaultValue) { + if (metadata.containsKey(name)) { + byte[] bytes = metadata.get(name); + return Arrays.copyOf(bytes, bytes.length); + } else { + return defaultValue; + } + } + + @Override + @Nullable + public final String get(String name, @Nullable String defaultValue) { + if (metadata.containsKey(name)) { + byte[] bytes = metadata.get(name); + return new String(bytes, Charset.forName(C.UTF8_NAME)); + } else { + return defaultValue; + } + } + + @Override + public final long get(String name, long defaultValue) { + if (metadata.containsKey(name)) { + byte[] bytes = metadata.get(name); + return ByteBuffer.wrap(bytes).getLong(); + } else { + return defaultValue; + } + } + + @Override + public final boolean contains(String name) { + return metadata.containsKey(name); + } + + @Override + public boolean equals(@Nullable Object o) { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + return isMetadataEqual(metadata, ((DefaultContentMetadata) o).metadata); + } + + @Override + public int hashCode() { + if (hashCode == 0) { + int result = 0; + for (Entry entry : metadata.entrySet()) { + result += entry.getKey().hashCode() ^ Arrays.hashCode(entry.getValue()); + } + hashCode = result; + } + return hashCode; + } + + private static boolean isMetadataEqual(Map first, Map second) { + if (first.size() != second.size()) { + return false; + } + for (Entry entry : first.entrySet()) { + byte[] value = entry.getValue(); + byte[] otherValue = second.get(entry.getKey()); + if (!Arrays.equals(value, otherValue)) { + return false; + } + } + return true; + } + + private static Map applyMutations( + Map otherMetadata, ContentMetadataMutations mutations) { + HashMap metadata = new HashMap<>(otherMetadata); + removeValues(metadata, mutations.getRemovedValues()); + addValues(metadata, mutations.getEditedValues()); + return metadata; + } + + private static void removeValues(HashMap metadata, List names) { + for (int i = 0; i < names.size(); i++) { + metadata.remove(names.get(i)); + } + } + + private static void addValues(HashMap metadata, Map values) { + for (String name : values.keySet()) { + metadata.put(name, getBytes(values.get(name))); + } + } + + private static byte[] getBytes(Object value) { + if (value instanceof Long) { + return ByteBuffer.allocate(8).putLong((Long) value).array(); + } else if (value instanceof String) { + return ((String) value).getBytes(Charset.forName(C.UTF8_NAME)); + } else if (value instanceof byte[]) { + return (byte[]) value; + } else { + throw new IllegalArgumentException(); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/LeastRecentlyUsedCacheEvictor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/LeastRecentlyUsedCacheEvictor.java new file mode 100644 index 0000000000..56eff06b25 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/LeastRecentlyUsedCacheEvictor.java @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache.Cache.CacheException; +import java.util.TreeSet; + +/** Evicts least recently used cache files first. */ +public final class LeastRecentlyUsedCacheEvictor implements CacheEvictor { + + private final long maxBytes; + private final TreeSet leastRecentlyUsed; + + private long currentSize; + + public LeastRecentlyUsedCacheEvictor(long maxBytes) { + this.maxBytes = maxBytes; + this.leastRecentlyUsed = new TreeSet<>(LeastRecentlyUsedCacheEvictor::compare); + } + + @Override + public boolean requiresCacheSpanTouches() { + return true; + } + + @Override + public void onCacheInitialized() { + // Do nothing. + } + + @Override + public void onStartFile(Cache cache, String key, long position, long length) { + if (length != C.LENGTH_UNSET) { + evictCache(cache, length); + } + } + + @Override + public void onSpanAdded(Cache cache, CacheSpan span) { + leastRecentlyUsed.add(span); + currentSize += span.length; + evictCache(cache, 0); + } + + @Override + public void onSpanRemoved(Cache cache, CacheSpan span) { + leastRecentlyUsed.remove(span); + currentSize -= span.length; + } + + @Override + public void onSpanTouched(Cache cache, CacheSpan oldSpan, CacheSpan newSpan) { + onSpanRemoved(cache, oldSpan); + onSpanAdded(cache, newSpan); + } + + private void evictCache(Cache cache, long requiredSpace) { + while (currentSize + requiredSpace > maxBytes && !leastRecentlyUsed.isEmpty()) { + try { + cache.removeSpan(leastRecentlyUsed.first()); + } catch (CacheException e) { + // do nothing. + } + } + } + + private static int compare(CacheSpan lhs, CacheSpan rhs) { + long lastTouchTimestampDelta = lhs.lastTouchTimestamp - rhs.lastTouchTimestamp; + if (lastTouchTimestampDelta == 0) { + // Use the standard compareTo method as a tie-break. + return lhs.compareTo(rhs); + } + return lhs.lastTouchTimestamp < rhs.lastTouchTimestamp ? -1 : 1; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/NoOpCacheEvictor.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/NoOpCacheEvictor.java new file mode 100644 index 0000000000..75c1ad0a09 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/NoOpCacheEvictor.java @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + + +/** + * Evictor that doesn't ever evict cache files. + * + * Warning: Using this evictor might have unforeseeable consequences if cache + * size is not managed elsewhere. + */ +public final class NoOpCacheEvictor implements CacheEvictor { + + @Override + public boolean requiresCacheSpanTouches() { + return false; + } + + @Override + public void onCacheInitialized() { + // Do nothing. + } + + @Override + public void onStartFile(Cache cache, String key, long position, long maxLength) { + // Do nothing. + } + + @Override + public void onSpanAdded(Cache cache, CacheSpan span) { + // Do nothing. + } + + @Override + public void onSpanRemoved(Cache cache, CacheSpan span) { + // Do nothing. + } + + @Override + public void onSpanTouched(Cache cache, CacheSpan oldSpan, CacheSpan newSpan) { + // Do nothing. + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/SimpleCache.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/SimpleCache.java new file mode 100644 index 0000000000..9e36c48d88 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/SimpleCache.java @@ -0,0 +1,812 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import android.os.ConditionVariable; +import androidx.annotation.NonNull; +import androidx.annotation.Nullable; +import androidx.annotation.WorkerThread; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.DatabaseIOException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.database.DatabaseProvider; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.File; +import java.io.IOException; +import java.security.SecureRandom; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Map; +import java.util.NavigableSet; +import java.util.Random; +import java.util.Set; +import java.util.TreeSet; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** + * A {@link Cache} implementation that maintains an in-memory representation. + * + *

Only one instance of SimpleCache is allowed for a given directory at a given time. + * + *

To delete a SimpleCache, use {@link #delete(File, DatabaseProvider)} rather than deleting the + * directory and its contents directly. This is necessary to ensure that associated index data is + * also removed. + */ +public final class SimpleCache implements Cache { + + private static final String TAG = "SimpleCache"; + /** + * Cache files are distributed between a number of subdirectories. This helps to avoid poor + * performance in cases where the performance of the underlying file system (e.g. FAT32) scales + * badly with the number of files per directory. See + * https://github.com/google/ExoPlayer/issues/4253. + */ + private static final int SUBDIRECTORY_COUNT = 10; + + private static final String UID_FILE_SUFFIX = ".uid"; + + private static final HashSet lockedCacheDirs = new HashSet<>(); + + private final File cacheDir; + private final CacheEvictor evictor; + private final CachedContentIndex contentIndex; + @Nullable private final CacheFileMetadataIndex fileIndex; + private final HashMap> listeners; + private final Random random; + private final boolean touchCacheSpans; + + private long uid; + private long totalSpace; + private boolean released; + private @MonotonicNonNull CacheException initializationException; + + /** + * Returns whether {@code cacheFolder} is locked by a {@link SimpleCache} instance. To unlock the + * folder the {@link SimpleCache} instance should be released. + */ + public static synchronized boolean isCacheFolderLocked(File cacheFolder) { + return lockedCacheDirs.contains(cacheFolder.getAbsoluteFile()); + } + + /** + * Deletes all content belonging to a cache instance. + * + *

This method may be slow and shouldn't normally be called on the main thread. + * + * @param cacheDir The cache directory. + * @param databaseProvider The database in which index data is stored, or {@code null} if the + * cache used a legacy index. + */ + @WorkerThread + public static void delete(File cacheDir, @Nullable DatabaseProvider databaseProvider) { + if (!cacheDir.exists()) { + return; + } + + File[] files = cacheDir.listFiles(); + if (files == null) { + cacheDir.delete(); + return; + } + + if (databaseProvider != null) { + // Make a best effort to read the cache UID and delete associated index data before deleting + // cache directory itself. + long uid = loadUid(files); + if (uid != UID_UNSET) { + try { + CacheFileMetadataIndex.delete(databaseProvider, uid); + } catch (DatabaseIOException e) { + Log.w(TAG, "Failed to delete file metadata: " + uid); + } + try { + CachedContentIndex.delete(databaseProvider, uid); + } catch (DatabaseIOException e) { + Log.w(TAG, "Failed to delete file metadata: " + uid); + } + } + } + + Util.recursiveDelete(cacheDir); + } + + /** + * Constructs the cache. The cache will delete any unrecognized files from the directory. Hence + * the directory cannot be used to store other files. + * + * @param cacheDir A dedicated cache directory. + * @param evictor The evictor to be used. For download use cases where cache eviction should not + * occur, use {@link NoOpCacheEvictor}. + * @deprecated Use a constructor that takes a {@link DatabaseProvider} for improved performance. + */ + @Deprecated + public SimpleCache(File cacheDir, CacheEvictor evictor) { + this(cacheDir, evictor, null, false); + } + + /** + * Constructs the cache. The cache will delete any unrecognized files from the directory. Hence + * the directory cannot be used to store other files. + * + * @param cacheDir A dedicated cache directory. + * @param evictor The evictor to be used. For download use cases where cache eviction should not + * occur, use {@link NoOpCacheEvictor}. + * @param secretKey If not null, cache keys will be stored encrypted on filesystem using AES/CBC. + * The key must be 16 bytes long. + * @deprecated Use a constructor that takes a {@link DatabaseProvider} for improved performance. + */ + @Deprecated + @SuppressWarnings("deprecation") + public SimpleCache(File cacheDir, CacheEvictor evictor, @Nullable byte[] secretKey) { + this(cacheDir, evictor, secretKey, secretKey != null); + } + + /** + * Constructs the cache. The cache will delete any unrecognized files from the directory. Hence + * the directory cannot be used to store other files. + * + * @param cacheDir A dedicated cache directory. + * @param evictor The evictor to be used. For download use cases where cache eviction should not + * occur, use {@link NoOpCacheEvictor}. + * @param secretKey If not null, cache keys will be stored encrypted on filesystem using AES/CBC. + * The key must be 16 bytes long. + * @param encrypt Whether the index will be encrypted when written. Must be false if {@code + * secretKey} is null. + * @deprecated Use a constructor that takes a {@link DatabaseProvider} for improved performance. + */ + @Deprecated + public SimpleCache( + File cacheDir, CacheEvictor evictor, @Nullable byte[] secretKey, boolean encrypt) { + this( + cacheDir, + evictor, + /* databaseProvider= */ null, + secretKey, + encrypt, + /* preferLegacyIndex= */ true); + } + + /** + * Constructs the cache. The cache will delete any unrecognized files from the directory. Hence + * the directory cannot be used to store other files. + * + * @param cacheDir A dedicated cache directory. + * @param evictor The evictor to be used. For download use cases where cache eviction should not + * occur, use {@link NoOpCacheEvictor}. + * @param databaseProvider Provides the database in which the cache index is stored. + */ + public SimpleCache(File cacheDir, CacheEvictor evictor, DatabaseProvider databaseProvider) { + this( + cacheDir, + evictor, + databaseProvider, + /* legacyIndexSecretKey= */ null, + /* legacyIndexEncrypt= */ false, + /* preferLegacyIndex= */ false); + } + + /** + * Constructs the cache. The cache will delete any unrecognized files from the cache directory. + * Hence the directory cannot be used to store other files. + * + * @param cacheDir A dedicated cache directory. + * @param evictor The evictor to be used. For download use cases where cache eviction should not + * occur, use {@link NoOpCacheEvictor}. + * @param databaseProvider Provides the database in which the cache index is stored, or {@code + * null} to use a legacy index. Using a database index is highly recommended for performance + * reasons. + * @param legacyIndexSecretKey A 16 byte AES key for reading, and optionally writing, the legacy + * index. Not used by the database index, however should still be provided when using the + * database index in cases where upgrading from the legacy index may be necessary. + * @param legacyIndexEncrypt Whether to encrypt when writing to the legacy index. Must be {@code + * false} if {@code legacyIndexSecretKey} is {@code null}. Not used by the database index. + * @param preferLegacyIndex Whether to use the legacy index even if a {@code databaseProvider} is + * provided. Should be {@code false} in nearly all cases. Setting this to {@code true} is only + * useful for downgrading from the database index back to the legacy index. + */ + public SimpleCache( + File cacheDir, + CacheEvictor evictor, + @Nullable DatabaseProvider databaseProvider, + @Nullable byte[] legacyIndexSecretKey, + boolean legacyIndexEncrypt, + boolean preferLegacyIndex) { + this( + cacheDir, + evictor, + new CachedContentIndex( + databaseProvider, + cacheDir, + legacyIndexSecretKey, + legacyIndexEncrypt, + preferLegacyIndex), + databaseProvider != null && !preferLegacyIndex + ? new CacheFileMetadataIndex(databaseProvider) + : null); + } + + /* package */ SimpleCache( + File cacheDir, + CacheEvictor evictor, + CachedContentIndex contentIndex, + @Nullable CacheFileMetadataIndex fileIndex) { + if (!lockFolder(cacheDir)) { + throw new IllegalStateException("Another SimpleCache instance uses the folder: " + cacheDir); + } + + this.cacheDir = cacheDir; + this.evictor = evictor; + this.contentIndex = contentIndex; + this.fileIndex = fileIndex; + listeners = new HashMap<>(); + random = new Random(); + touchCacheSpans = evictor.requiresCacheSpanTouches(); + uid = UID_UNSET; + + // Start cache initialization. + final ConditionVariable conditionVariable = new ConditionVariable(); + new Thread("SimpleCache.initialize()") { + @Override + public void run() { + synchronized (SimpleCache.this) { + conditionVariable.open(); + initialize(); + SimpleCache.this.evictor.onCacheInitialized(); + } + } + }.start(); + conditionVariable.block(); + } + + /** + * Checks whether the cache was initialized successfully. + * + * @throws CacheException If an error occurred during initialization. + */ + public synchronized void checkInitialization() throws CacheException { + if (initializationException != null) { + throw initializationException; + } + } + + @Override + public synchronized long getUid() { + return uid; + } + + @Override + public synchronized void release() { + if (released) { + return; + } + listeners.clear(); + removeStaleSpans(); + try { + contentIndex.store(); + } catch (IOException e) { + Log.e(TAG, "Storing index file failed", e); + } finally { + unlockFolder(cacheDir); + released = true; + } + } + + @Override + public synchronized NavigableSet addListener(String key, Listener listener) { + Assertions.checkState(!released); + ArrayList listenersForKey = listeners.get(key); + if (listenersForKey == null) { + listenersForKey = new ArrayList<>(); + listeners.put(key, listenersForKey); + } + listenersForKey.add(listener); + return getCachedSpans(key); + } + + @Override + public synchronized void removeListener(String key, Listener listener) { + if (released) { + return; + } + ArrayList listenersForKey = listeners.get(key); + if (listenersForKey != null) { + listenersForKey.remove(listener); + if (listenersForKey.isEmpty()) { + listeners.remove(key); + } + } + } + + @NonNull + @Override + public synchronized NavigableSet getCachedSpans(String key) { + Assertions.checkState(!released); + CachedContent cachedContent = contentIndex.get(key); + return cachedContent == null || cachedContent.isEmpty() + ? new TreeSet<>() + : new TreeSet(cachedContent.getSpans()); + } + + @Override + public synchronized Set getKeys() { + Assertions.checkState(!released); + return new HashSet<>(contentIndex.getKeys()); + } + + @Override + public synchronized long getCacheSpace() { + Assertions.checkState(!released); + return totalSpace; + } + + @Override + public synchronized CacheSpan startReadWrite(String key, long position) + throws InterruptedException, CacheException { + Assertions.checkState(!released); + checkInitialization(); + + while (true) { + CacheSpan span = startReadWriteNonBlocking(key, position); + if (span != null) { + return span; + } else { + // Lock not available. We'll be woken up when a span is added, or when a locked span is + // released. We'll be able to make progress when either: + // 1. A span is added for the requested key that covers the requested position, in which + // case a read can be started. + // 2. The lock for the requested key is released, in which case a write can be started. + wait(); + } + } + } + + @Override + @Nullable + public synchronized CacheSpan startReadWriteNonBlocking(String key, long position) + throws CacheException { + Assertions.checkState(!released); + checkInitialization(); + + SimpleCacheSpan span = getSpan(key, position); + + if (span.isCached) { + // Read case. + return touchSpan(key, span); + } + + CachedContent cachedContent = contentIndex.getOrAdd(key); + if (!cachedContent.isLocked()) { + // Write case. + cachedContent.setLocked(true); + return span; + } + + // Lock not available. + return null; + } + + @Override + public synchronized File startFile(String key, long position, long length) throws CacheException { + Assertions.checkState(!released); + checkInitialization(); + + CachedContent cachedContent = contentIndex.get(key); + Assertions.checkNotNull(cachedContent); + Assertions.checkState(cachedContent.isLocked()); + if (!cacheDir.exists()) { + // For some reason the cache directory doesn't exist. Make a best effort to create it. + cacheDir.mkdirs(); + removeStaleSpans(); + } + evictor.onStartFile(this, key, position, length); + // Randomly distribute files into subdirectories with a uniform distribution. + File fileDir = new File(cacheDir, Integer.toString(random.nextInt(SUBDIRECTORY_COUNT))); + if (!fileDir.exists()) { + fileDir.mkdir(); + } + long lastTouchTimestamp = System.currentTimeMillis(); + return SimpleCacheSpan.getCacheFile(fileDir, cachedContent.id, position, lastTouchTimestamp); + } + + @Override + public synchronized void commitFile(File file, long length) throws CacheException { + Assertions.checkState(!released); + if (!file.exists()) { + return; + } + if (length == 0) { + file.delete(); + return; + } + + SimpleCacheSpan span = + Assertions.checkNotNull(SimpleCacheSpan.createCacheEntry(file, length, contentIndex)); + CachedContent cachedContent = Assertions.checkNotNull(contentIndex.get(span.key)); + Assertions.checkState(cachedContent.isLocked()); + + // Check if the span conflicts with the set content length + long contentLength = ContentMetadata.getContentLength(cachedContent.getMetadata()); + if (contentLength != C.LENGTH_UNSET) { + Assertions.checkState((span.position + span.length) <= contentLength); + } + + if (fileIndex != null) { + String fileName = file.getName(); + try { + fileIndex.set(fileName, span.length, span.lastTouchTimestamp); + } catch (IOException e) { + throw new CacheException(e); + } + } + addSpan(span); + try { + contentIndex.store(); + } catch (IOException e) { + throw new CacheException(e); + } + notifyAll(); + } + + @Override + public synchronized void releaseHoleSpan(CacheSpan holeSpan) { + Assertions.checkState(!released); + CachedContent cachedContent = contentIndex.get(holeSpan.key); + Assertions.checkNotNull(cachedContent); + Assertions.checkState(cachedContent.isLocked()); + cachedContent.setLocked(false); + contentIndex.maybeRemove(cachedContent.key); + notifyAll(); + } + + @Override + public synchronized void removeSpan(CacheSpan span) { + Assertions.checkState(!released); + removeSpanInternal(span); + } + + @Override + public synchronized boolean isCached(String key, long position, long length) { + Assertions.checkState(!released); + CachedContent cachedContent = contentIndex.get(key); + return cachedContent != null && cachedContent.getCachedBytesLength(position, length) >= length; + } + + @Override + public synchronized long getCachedLength(String key, long position, long length) { + Assertions.checkState(!released); + CachedContent cachedContent = contentIndex.get(key); + return cachedContent != null ? cachedContent.getCachedBytesLength(position, length) : -length; + } + + @Override + public synchronized void applyContentMetadataMutations( + String key, ContentMetadataMutations mutations) throws CacheException { + Assertions.checkState(!released); + checkInitialization(); + + contentIndex.applyContentMetadataMutations(key, mutations); + try { + contentIndex.store(); + } catch (IOException e) { + throw new CacheException(e); + } + } + + @Override + public synchronized ContentMetadata getContentMetadata(String key) { + Assertions.checkState(!released); + return contentIndex.getContentMetadata(key); + } + + /** Ensures that the cache's in-memory representation has been initialized. */ + private void initialize() { + if (!cacheDir.exists()) { + if (!cacheDir.mkdirs()) { + String message = "Failed to create cache directory: " + cacheDir; + Log.e(TAG, message); + initializationException = new CacheException(message); + return; + } + } + + File[] files = cacheDir.listFiles(); + if (files == null) { + String message = "Failed to list cache directory files: " + cacheDir; + Log.e(TAG, message); + initializationException = new CacheException(message); + return; + } + + uid = loadUid(files); + if (uid == UID_UNSET) { + try { + uid = createUid(cacheDir); + } catch (IOException e) { + String message = "Failed to create cache UID: " + cacheDir; + Log.e(TAG, message, e); + initializationException = new CacheException(message, e); + return; + } + } + + try { + contentIndex.initialize(uid); + if (fileIndex != null) { + fileIndex.initialize(uid); + Map fileMetadata = fileIndex.getAll(); + loadDirectory(cacheDir, /* isRoot= */ true, files, fileMetadata); + fileIndex.removeAll(fileMetadata.keySet()); + } else { + loadDirectory(cacheDir, /* isRoot= */ true, files, /* fileMetadata= */ null); + } + } catch (IOException e) { + String message = "Failed to initialize cache indices: " + cacheDir; + Log.e(TAG, message, e); + initializationException = new CacheException(message, e); + return; + } + + contentIndex.removeEmpty(); + try { + contentIndex.store(); + } catch (IOException e) { + Log.e(TAG, "Storing index file failed", e); + } + } + + /** + * Loads a cache directory. If the root directory is passed, also loads any subdirectories. + * + * @param directory The directory. + * @param isRoot Whether the directory is the root directory. + * @param files The files belonging to the directory. + * @param fileMetadata A mutable map containing cache file metadata, keyed by file name. The map + * is modified by removing entries for all loaded files. When the method call returns, the map + * will contain only metadata that was unused. May be null if no file metadata is available. + */ + private void loadDirectory( + File directory, + boolean isRoot, + @Nullable File[] files, + @Nullable Map fileMetadata) { + if (files == null || files.length == 0) { + // Either (a) directory isn't really a directory (b) it's empty, or (c) listing files failed. + if (!isRoot) { + // For (a) and (b) deletion is the desired result. For (c) it will be a no-op if the + // directory is non-empty, so there's no harm in trying. + directory.delete(); + } + return; + } + for (File file : files) { + String fileName = file.getName(); + if (isRoot && fileName.indexOf('.') == -1) { + loadDirectory(file, /* isRoot= */ false, file.listFiles(), fileMetadata); + } else { + if (isRoot + && (CachedContentIndex.isIndexFile(fileName) || fileName.endsWith(UID_FILE_SUFFIX))) { + // Skip expected UID and index files in the root directory. + continue; + } + long length = C.LENGTH_UNSET; + long lastTouchTimestamp = C.TIME_UNSET; + CacheFileMetadata metadata = fileMetadata != null ? fileMetadata.remove(fileName) : null; + if (metadata != null) { + length = metadata.length; + lastTouchTimestamp = metadata.lastTouchTimestamp; + } + SimpleCacheSpan span = + SimpleCacheSpan.createCacheEntry(file, length, lastTouchTimestamp, contentIndex); + if (span != null) { + addSpan(span); + } else { + file.delete(); + } + } + } + } + + /** + * Touches a cache span, returning the updated result. If the evictor does not require cache spans + * to be touched, then this method does nothing and the span is returned without modification. + * + * @param key The key of the span being touched. + * @param span The span being touched. + * @return The updated span. + */ + private SimpleCacheSpan touchSpan(String key, SimpleCacheSpan span) { + if (!touchCacheSpans) { + return span; + } + String fileName = Assertions.checkNotNull(span.file).getName(); + long length = span.length; + long lastTouchTimestamp = System.currentTimeMillis(); + boolean updateFile = false; + if (fileIndex != null) { + try { + fileIndex.set(fileName, length, lastTouchTimestamp); + } catch (IOException e) { + Log.w(TAG, "Failed to update index with new touch timestamp."); + } + } else { + // Updating the file itself to incorporate the new last touch timestamp is much slower than + // updating the file index. Hence we only update the file if we don't have a file index. + updateFile = true; + } + SimpleCacheSpan newSpan = + contentIndex.get(key).setLastTouchTimestamp(span, lastTouchTimestamp, updateFile); + notifySpanTouched(span, newSpan); + return newSpan; + } + + /** + * Returns the cache span corresponding to the provided lookup span. + * + *

If the lookup position is contained by an existing entry in the cache, then the returned + * span defines the file in which the data is stored. If the lookup position is not contained by + * an existing entry, then the returned span defines the maximum extents of the hole in the cache. + * + * @param key The key of the span being requested. + * @param position The position of the span being requested. + * @return The corresponding cache {@link SimpleCacheSpan}. + */ + private SimpleCacheSpan getSpan(String key, long position) { + CachedContent cachedContent = contentIndex.get(key); + if (cachedContent == null) { + return SimpleCacheSpan.createOpenHole(key, position); + } + while (true) { + SimpleCacheSpan span = cachedContent.getSpan(position); + if (span.isCached && span.file.length() != span.length) { + // The file has been modified or deleted underneath us. It's likely that other files will + // have been modified too, so scan the whole in-memory representation. + removeStaleSpans(); + continue; + } + return span; + } + } + + /** + * Adds a cached span to the in-memory representation. + * + * @param span The span to be added. + */ + private void addSpan(SimpleCacheSpan span) { + contentIndex.getOrAdd(span.key).addSpan(span); + totalSpace += span.length; + notifySpanAdded(span); + } + + private void removeSpanInternal(CacheSpan span) { + CachedContent cachedContent = contentIndex.get(span.key); + if (cachedContent == null || !cachedContent.removeSpan(span)) { + return; + } + totalSpace -= span.length; + if (fileIndex != null) { + String fileName = span.file.getName(); + try { + fileIndex.remove(fileName); + } catch (IOException e) { + // This will leave a stale entry in the file index. It will be removed next time the cache + // is initialized. + Log.w(TAG, "Failed to remove file index entry for: " + fileName); + } + } + contentIndex.maybeRemove(cachedContent.key); + notifySpanRemoved(span); + } + + /** + * Scans all of the cached spans in the in-memory representation, removing any for which the + * underlying file lengths no longer match. + */ + private void removeStaleSpans() { + ArrayList spansToBeRemoved = new ArrayList<>(); + for (CachedContent cachedContent : contentIndex.getAll()) { + for (CacheSpan span : cachedContent.getSpans()) { + if (span.file.length() != span.length) { + spansToBeRemoved.add(span); + } + } + } + for (int i = 0; i < spansToBeRemoved.size(); i++) { + removeSpanInternal(spansToBeRemoved.get(i)); + } + } + + private void notifySpanRemoved(CacheSpan span) { + ArrayList keyListeners = listeners.get(span.key); + if (keyListeners != null) { + for (int i = keyListeners.size() - 1; i >= 0; i--) { + keyListeners.get(i).onSpanRemoved(this, span); + } + } + evictor.onSpanRemoved(this, span); + } + + private void notifySpanAdded(SimpleCacheSpan span) { + ArrayList keyListeners = listeners.get(span.key); + if (keyListeners != null) { + for (int i = keyListeners.size() - 1; i >= 0; i--) { + keyListeners.get(i).onSpanAdded(this, span); + } + } + evictor.onSpanAdded(this, span); + } + + private void notifySpanTouched(SimpleCacheSpan oldSpan, CacheSpan newSpan) { + ArrayList keyListeners = listeners.get(oldSpan.key); + if (keyListeners != null) { + for (int i = keyListeners.size() - 1; i >= 0; i--) { + keyListeners.get(i).onSpanTouched(this, oldSpan, newSpan); + } + } + evictor.onSpanTouched(this, oldSpan, newSpan); + } + + /** + * Loads the cache UID from the files belonging to the root directory. + * + * @param files The files belonging to the root directory. + * @return The loaded UID, or {@link #UID_UNSET} if a UID has not yet been created. + */ + private static long loadUid(File[] files) { + for (File file : files) { + String fileName = file.getName(); + if (fileName.endsWith(UID_FILE_SUFFIX)) { + try { + return parseUid(fileName); + } catch (NumberFormatException e) { + // This should never happen, but if it does delete the malformed UID file and continue. + Log.e(TAG, "Malformed UID file: " + file); + file.delete(); + } + } + } + return UID_UNSET; + } + + @SuppressWarnings("TrulyRandom") + private static long createUid(File directory) throws IOException { + // Generate a non-negative UID. + long uid = new SecureRandom().nextLong(); + uid = uid == Long.MIN_VALUE ? 0 : Math.abs(uid); + // Persist it as a file. + String hexUid = Long.toString(uid, /* radix= */ 16); + File hexUidFile = new File(directory, hexUid + UID_FILE_SUFFIX); + if (!hexUidFile.createNewFile()) { + // False means that the file already exists, so this should never happen. + throw new IOException("Failed to create UID file: " + hexUidFile); + } + return uid; + } + + private static long parseUid(String fileName) { + return Long.parseLong(fileName.substring(0, fileName.indexOf('.')), /* radix= */ 16); + } + + private static synchronized boolean lockFolder(File cacheDir) { + return lockedCacheDirs.add(cacheDir.getAbsoluteFile()); + } + + private static synchronized void unlockFolder(File cacheDir) { + lockedCacheDirs.remove(cacheDir.getAbsoluteFile()); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/SimpleCacheSpan.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/SimpleCacheSpan.java new file mode 100644 index 0000000000..6e7bec301f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/cache/SimpleCacheSpan.java @@ -0,0 +1,217 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.io.File; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** This class stores span metadata in filename. */ +/* package */ final class SimpleCacheSpan extends CacheSpan { + + /* package */ static final String COMMON_SUFFIX = ".exo"; + + private static final String SUFFIX = ".v3" + COMMON_SUFFIX; + private static final Pattern CACHE_FILE_PATTERN_V1 = Pattern.compile( + "^(.+)\\.(\\d+)\\.(\\d+)\\.v1\\.exo$", Pattern.DOTALL); + private static final Pattern CACHE_FILE_PATTERN_V2 = Pattern.compile( + "^(.+)\\.(\\d+)\\.(\\d+)\\.v2\\.exo$", Pattern.DOTALL); + private static final Pattern CACHE_FILE_PATTERN_V3 = Pattern.compile( + "^(\\d+)\\.(\\d+)\\.(\\d+)\\.v3\\.exo$", Pattern.DOTALL); + + /** + * Returns a new {@link File} instance from {@code cacheDir}, {@code id}, {@code position}, {@code + * timestamp}. + * + * @param cacheDir The parent abstract pathname. + * @param id The cache file id. + * @param position The position of the stored data in the original stream. + * @param timestamp The file timestamp. + * @return The cache file. + */ + public static File getCacheFile(File cacheDir, int id, long position, long timestamp) { + return new File(cacheDir, id + "." + position + "." + timestamp + SUFFIX); + } + + /** + * Creates a lookup span. + * + * @param key The cache key. + * @param position The position of the {@link CacheSpan} in the original stream. + * @return The span. + */ + public static SimpleCacheSpan createLookup(String key, long position) { + return new SimpleCacheSpan(key, position, C.LENGTH_UNSET, C.TIME_UNSET, null); + } + + /** + * Creates an open hole span. + * + * @param key The cache key. + * @param position The position of the {@link CacheSpan} in the original stream. + * @return The span. + */ + public static SimpleCacheSpan createOpenHole(String key, long position) { + return new SimpleCacheSpan(key, position, C.LENGTH_UNSET, C.TIME_UNSET, null); + } + + /** + * Creates a closed hole span. + * + * @param key The cache key. + * @param position The position of the {@link CacheSpan} in the original stream. + * @param length The length of the {@link CacheSpan}. + * @return The span. + */ + public static SimpleCacheSpan createClosedHole(String key, long position, long length) { + return new SimpleCacheSpan(key, position, length, C.TIME_UNSET, null); + } + + /** + * Creates a cache span from an underlying cache file. Upgrades the file if necessary. + * + * @param file The cache file. + * @param length The length of the cache file in bytes, or {@link C#LENGTH_UNSET} to query the + * underlying file system. Querying the underlying file system can be expensive, so callers + * that already know the length of the file should pass it explicitly. + * @return The span, or null if the file name is not correctly formatted, or if the id is not + * present in the content index, or if the length is 0. + */ + @Nullable + public static SimpleCacheSpan createCacheEntry(File file, long length, CachedContentIndex index) { + return createCacheEntry(file, length, /* lastTouchTimestamp= */ C.TIME_UNSET, index); + } + + /** + * Creates a cache span from an underlying cache file. Upgrades the file if necessary. + * + * @param file The cache file. + * @param length The length of the cache file in bytes, or {@link C#LENGTH_UNSET} to query the + * underlying file system. Querying the underlying file system can be expensive, so callers + * that already know the length of the file should pass it explicitly. + * @param lastTouchTimestamp The last touch timestamp, or {@link C#TIME_UNSET} to use the file + * timestamp. + * @return The span, or null if the file name is not correctly formatted, or if the id is not + * present in the content index, or if the length is 0. + */ + @Nullable + public static SimpleCacheSpan createCacheEntry( + File file, long length, long lastTouchTimestamp, CachedContentIndex index) { + String name = file.getName(); + if (!name.endsWith(SUFFIX)) { + @Nullable File upgradedFile = upgradeFile(file, index); + if (upgradedFile == null) { + return null; + } + file = upgradedFile; + name = file.getName(); + } + + Matcher matcher = CACHE_FILE_PATTERN_V3.matcher(name); + if (!matcher.matches()) { + return null; + } + + int id = Integer.parseInt(matcher.group(1)); + String key = index.getKeyForId(id); + if (key == null) { + return null; + } + + if (length == C.LENGTH_UNSET) { + length = file.length(); + } + if (length == 0) { + return null; + } + + long position = Long.parseLong(matcher.group(2)); + if (lastTouchTimestamp == C.TIME_UNSET) { + lastTouchTimestamp = Long.parseLong(matcher.group(3)); + } + return new SimpleCacheSpan(key, position, length, lastTouchTimestamp, file); + } + + /** + * Upgrades the cache file if it is created by an earlier version of {@link SimpleCache}. + * + * @param file The cache file. + * @param index Cached content index. + * @return Upgraded cache file or {@code null} if the file name is not correctly formatted or the + * file can not be renamed. + */ + @Nullable + private static File upgradeFile(File file, CachedContentIndex index) { + String key; + String filename = file.getName(); + Matcher matcher = CACHE_FILE_PATTERN_V2.matcher(filename); + if (matcher.matches()) { + key = Util.unescapeFileName(matcher.group(1)); + if (key == null) { + return null; + } + } else { + matcher = CACHE_FILE_PATTERN_V1.matcher(filename); + if (!matcher.matches()) { + return null; + } + key = matcher.group(1); // Keys were not escaped in version 1. + } + + File newCacheFile = + getCacheFile( + Assertions.checkStateNotNull(file.getParentFile()), + index.assignIdForKey(key), + Long.parseLong(matcher.group(2)), + Long.parseLong(matcher.group(3))); + if (!file.renameTo(newCacheFile)) { + return null; + } + return newCacheFile; + } + + /** + * @param key The cache key. + * @param position The position of the {@link CacheSpan} in the original stream. + * @param length The length of the {@link CacheSpan}, or {@link C#LENGTH_UNSET} if this is an + * open-ended hole. + * @param lastTouchTimestamp The last touch timestamp, or {@link C#TIME_UNSET} if {@link + * #isCached} is false. + * @param file The file corresponding to this {@link CacheSpan}, or null if it's a hole. + */ + private SimpleCacheSpan( + String key, long position, long length, long lastTouchTimestamp, @Nullable File file) { + super(key, position, length, lastTouchTimestamp, file); + } + + /** + * Returns a copy of this CacheSpan with a new file and last touch timestamp. + * + * @param file The new file. + * @param lastTouchTimestamp The new last touch time. + * @return A copy with the new file and last touch timestamp. + * @throws IllegalStateException If called on a non-cached span (i.e. {@link #isCached} is false). + */ + public SimpleCacheSpan copyWithFileAndLastTouchTimestamp(File file, long lastTouchTimestamp) { + Assertions.checkState(isCached); + return new SimpleCacheSpan(key, position, length, lastTouchTimestamp, file); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/AesCipherDataSink.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/AesCipherDataSink.java new file mode 100644 index 0000000000..4c6be98157 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/AesCipherDataSink.java @@ -0,0 +1,99 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.crypto; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSink; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import java.io.IOException; +import javax.crypto.Cipher; + +/** + * A wrapping {@link DataSink} that encrypts the data being consumed. + */ +public final class AesCipherDataSink implements DataSink { + + private final DataSink wrappedDataSink; + private final byte[] secretKey; + @Nullable private final byte[] scratch; + + @Nullable private AesFlushingCipher cipher; + + /** + * Create an instance whose {@code write} methods have the side effect of overwriting the input + * {@code data}. Use this constructor for maximum efficiency in the case that there is no + * requirement for the input data arrays to remain unchanged. + * + * @param secretKey The key data. + * @param wrappedDataSink The wrapped {@link DataSink}. + */ + public AesCipherDataSink(byte[] secretKey, DataSink wrappedDataSink) { + this(secretKey, wrappedDataSink, null); + } + + /** + * Create an instance whose {@code write} methods are free of side effects. Use this constructor + * when the input data arrays are required to remain unchanged. + * + * @param secretKey The key data. + * @param wrappedDataSink The wrapped {@link DataSink}. + * @param scratch Scratch space. Data is encrypted into this array before being written to the + * wrapped {@link DataSink}. It should be of appropriate size for the expected writes. If a + * write is larger than the size of this array the write will still succeed, but multiple + * cipher calls will be required to complete the operation. If {@code null} then encryption + * will overwrite the input {@code data}. + */ + public AesCipherDataSink(byte[] secretKey, DataSink wrappedDataSink, @Nullable byte[] scratch) { + this.wrappedDataSink = wrappedDataSink; + this.secretKey = secretKey; + this.scratch = scratch; + } + + @Override + public void open(DataSpec dataSpec) throws IOException { + wrappedDataSink.open(dataSpec); + long nonce = CryptoUtil.getFNV64Hash(dataSpec.key); + cipher = new AesFlushingCipher(Cipher.ENCRYPT_MODE, secretKey, nonce, + dataSpec.absoluteStreamPosition); + } + + @Override + public void write(byte[] data, int offset, int length) throws IOException { + if (scratch == null) { + // In-place mode. Writes over the input data. + castNonNull(cipher).updateInPlace(data, offset, length); + wrappedDataSink.write(data, offset, length); + } else { + // Use scratch space. The original data remains intact. + int bytesProcessed = 0; + while (bytesProcessed < length) { + int bytesToProcess = Math.min(length - bytesProcessed, scratch.length); + castNonNull(cipher) + .update(data, offset + bytesProcessed, bytesToProcess, scratch, /* outOffset= */ 0); + wrappedDataSink.write(scratch, /* offset= */ 0, bytesToProcess); + bytesProcessed += bytesToProcess; + } + } + } + + @Override + public void close() throws IOException { + cipher = null; + wrappedDataSink.close(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/AesCipherDataSource.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/AesCipherDataSource.java new file mode 100644 index 0000000000..0b0687b57e --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/AesCipherDataSource.java @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.crypto; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.net.Uri; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSpec; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.TransferListener; +import java.io.IOException; +import java.util.List; +import java.util.Map; +import javax.crypto.Cipher; + +/** + * A {@link DataSource} that decrypts the data read from an upstream source. + */ +public final class AesCipherDataSource implements DataSource { + + private final DataSource upstream; + private final byte[] secretKey; + + @Nullable private AesFlushingCipher cipher; + + public AesCipherDataSource(byte[] secretKey, DataSource upstream) { + this.upstream = upstream; + this.secretKey = secretKey; + } + + @Override + public void addTransferListener(TransferListener transferListener) { + upstream.addTransferListener(transferListener); + } + + @Override + public long open(DataSpec dataSpec) throws IOException { + long dataLength = upstream.open(dataSpec); + long nonce = CryptoUtil.getFNV64Hash(dataSpec.key); + cipher = new AesFlushingCipher(Cipher.DECRYPT_MODE, secretKey, nonce, + dataSpec.absoluteStreamPosition); + return dataLength; + } + + @Override + public int read(byte[] data, int offset, int readLength) throws IOException { + if (readLength == 0) { + return 0; + } + int read = upstream.read(data, offset, readLength); + if (read == C.RESULT_END_OF_INPUT) { + return C.RESULT_END_OF_INPUT; + } + castNonNull(cipher).updateInPlace(data, offset, read); + return read; + } + + @Override + @Nullable + public Uri getUri() { + return upstream.getUri(); + } + + @Override + public Map> getResponseHeaders() { + return upstream.getResponseHeaders(); + } + + @Override + public void close() throws IOException { + cipher = null; + upstream.close(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/AesFlushingCipher.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/AesFlushingCipher.java new file mode 100644 index 0000000000..985a6dcf24 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/AesFlushingCipher.java @@ -0,0 +1,123 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.crypto; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.nio.ByteBuffer; +import java.security.InvalidAlgorithmParameterException; +import java.security.InvalidKeyException; +import java.security.NoSuchAlgorithmException; +import javax.crypto.Cipher; +import javax.crypto.NoSuchPaddingException; +import javax.crypto.ShortBufferException; +import javax.crypto.spec.IvParameterSpec; +import javax.crypto.spec.SecretKeySpec; + +/** + * A flushing variant of a AES/CTR/NoPadding {@link Cipher}. + * + * Unlike a regular {@link Cipher}, the update methods of this class are guaranteed to process all + * of the bytes input (and hence output the same number of bytes). + */ +public final class AesFlushingCipher { + + private final Cipher cipher; + private final int blockSize; + private final byte[] zerosBlock; + private final byte[] flushedBlock; + + private int pendingXorBytes; + + public AesFlushingCipher(int mode, byte[] secretKey, long nonce, long offset) { + try { + cipher = Cipher.getInstance("AES/CTR/NoPadding"); + blockSize = cipher.getBlockSize(); + zerosBlock = new byte[blockSize]; + flushedBlock = new byte[blockSize]; + long counter = offset / blockSize; + int startPadding = (int) (offset % blockSize); + cipher.init( + mode, + new SecretKeySpec(secretKey, Util.splitAtFirst(cipher.getAlgorithm(), "/")[0]), + new IvParameterSpec(getInitializationVector(nonce, counter))); + if (startPadding != 0) { + updateInPlace(new byte[startPadding], 0, startPadding); + } + } catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException + | InvalidAlgorithmParameterException e) { + // Should never happen. + throw new RuntimeException(e); + } + } + + public void updateInPlace(byte[] data, int offset, int length) { + update(data, offset, length, data, offset); + } + + public void update(byte[] in, int inOffset, int length, byte[] out, int outOffset) { + // If we previously flushed the cipher by inputting zeros up to a block boundary, then we need + // to manually transform the data that actually ended the block. See the comment below for more + // details. + while (pendingXorBytes > 0) { + out[outOffset] = (byte) (in[inOffset] ^ flushedBlock[blockSize - pendingXorBytes]); + outOffset++; + inOffset++; + pendingXorBytes--; + length--; + if (length == 0) { + return; + } + } + + // Do the bulk of the update. + int written = nonFlushingUpdate(in, inOffset, length, out, outOffset); + if (length == written) { + return; + } + + // We need to finish the block to flush out the remaining bytes. We do so by inputting zeros, + // so that the corresponding bytes output by the cipher are those that would have been XORed + // against the real end-of-block data to transform it. We store these bytes so that we can + // perform the transformation manually in the case of a subsequent call to this method with + // the real data. + int bytesToFlush = length - written; + Assertions.checkState(bytesToFlush < blockSize); + outOffset += written; + pendingXorBytes = blockSize - bytesToFlush; + written = nonFlushingUpdate(zerosBlock, 0, pendingXorBytes, flushedBlock, 0); + Assertions.checkState(written == blockSize); + // The first part of xorBytes contains the flushed data, which we copy out. The remainder + // contains the bytes that will be needed for manual transformation in a subsequent call. + for (int i = 0; i < bytesToFlush; i++) { + out[outOffset++] = flushedBlock[i]; + } + } + + private int nonFlushingUpdate(byte[] in, int inOffset, int length, byte[] out, int outOffset) { + try { + return cipher.update(in, inOffset, length, out, outOffset); + } catch (ShortBufferException e) { + // Should never happen. + throw new RuntimeException(e); + } + } + + private byte[] getInitializationVector(long nonce, long counter) { + return ByteBuffer.allocate(16).putLong(nonce).putLong(counter).array(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/CryptoUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/CryptoUtil.java new file mode 100644 index 0000000000..a4904b9285 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/upstream/crypto/CryptoUtil.java @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.crypto; + +import androidx.annotation.Nullable; + +/** + * Utility functions for the crypto package. + */ +/* package */ final class CryptoUtil { + + private CryptoUtil() {} + + /** + * Returns the hash value of the input as a long using the 64 bit FNV-1a hash function. The hash + * values produced by this function are less likely to collide than those produced by {@link + * #hashCode()}. + */ + public static long getFNV64Hash(@Nullable String input) { + if (input == null) { + return 0; + } + + long hash = 0; + for (int i = 0; i < input.length(); i++) { + hash ^= input.charAt(i); + // This is equivalent to hash *= 0x100000001b3 (the FNV magic prime number). + hash += (hash << 1) + (hash << 4) + (hash << 5) + (hash << 7) + (hash << 8) + (hash << 40); + } + return hash; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Assertions.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Assertions.java new file mode 100644 index 0000000000..361b895695 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Assertions.java @@ -0,0 +1,217 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.os.Looper; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayerLibraryInfo; +import org.checkerframework.checker.nullness.qual.EnsuresNonNull; + +/** + * Provides methods for asserting the truth of expressions and properties. + */ +public final class Assertions { + + private Assertions() {} + + /** + * Throws {@link IllegalArgumentException} if {@code expression} evaluates to false. + * + * @param expression The expression to evaluate. + * @throws IllegalArgumentException If {@code expression} is false. + */ + public static void checkArgument(boolean expression) { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && !expression) { + throw new IllegalArgumentException(); + } + } + + /** + * Throws {@link IllegalArgumentException} if {@code expression} evaluates to false. + * + * @param expression The expression to evaluate. + * @param errorMessage The exception message if an exception is thrown. The message is converted + * to a {@link String} using {@link String#valueOf(Object)}. + * @throws IllegalArgumentException If {@code expression} is false. + */ + public static void checkArgument(boolean expression, Object errorMessage) { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && !expression) { + throw new IllegalArgumentException(String.valueOf(errorMessage)); + } + } + + /** + * Throws {@link IndexOutOfBoundsException} if {@code index} falls outside the specified bounds. + * + * @param index The index to test. + * @param start The start of the allowed range (inclusive). + * @param limit The end of the allowed range (exclusive). + * @return The {@code index} that was validated. + * @throws IndexOutOfBoundsException If {@code index} falls outside the specified bounds. + */ + public static int checkIndex(int index, int start, int limit) { + if (index < start || index >= limit) { + throw new IndexOutOfBoundsException(); + } + return index; + } + + /** + * Throws {@link IllegalStateException} if {@code expression} evaluates to false. + * + * @param expression The expression to evaluate. + * @throws IllegalStateException If {@code expression} is false. + */ + public static void checkState(boolean expression) { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && !expression) { + throw new IllegalStateException(); + } + } + + /** + * Throws {@link IllegalStateException} if {@code expression} evaluates to false. + * + * @param expression The expression to evaluate. + * @param errorMessage The exception message if an exception is thrown. The message is converted + * to a {@link String} using {@link String#valueOf(Object)}. + * @throws IllegalStateException If {@code expression} is false. + */ + public static void checkState(boolean expression, Object errorMessage) { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && !expression) { + throw new IllegalStateException(String.valueOf(errorMessage)); + } + } + + /** + * Throws {@link IllegalStateException} if {@code reference} is null. + * + * @param The type of the reference. + * @param reference The reference. + * @return The non-null reference that was validated. + * @throws IllegalStateException If {@code reference} is null. + */ + @SuppressWarnings({"contracts.postcondition.not.satisfied", "return.type.incompatible"}) + @EnsuresNonNull({"#1"}) + public static T checkStateNotNull(@Nullable T reference) { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && reference == null) { + throw new IllegalStateException(); + } + return reference; + } + + /** + * Throws {@link IllegalStateException} if {@code reference} is null. + * + * @param The type of the reference. + * @param reference The reference. + * @param errorMessage The exception message to use if the check fails. The message is converted + * to a string using {@link String#valueOf(Object)}. + * @return The non-null reference that was validated. + * @throws IllegalStateException If {@code reference} is null. + */ + @SuppressWarnings({"contracts.postcondition.not.satisfied", "return.type.incompatible"}) + @EnsuresNonNull({"#1"}) + public static T checkStateNotNull(@Nullable T reference, Object errorMessage) { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && reference == null) { + throw new IllegalStateException(String.valueOf(errorMessage)); + } + return reference; + } + + /** + * Throws {@link NullPointerException} if {@code reference} is null. + * + * @param The type of the reference. + * @param reference The reference. + * @return The non-null reference that was validated. + * @throws NullPointerException If {@code reference} is null. + */ + @SuppressWarnings({"contracts.postcondition.not.satisfied", "return.type.incompatible"}) + @EnsuresNonNull({"#1"}) + public static T checkNotNull(@Nullable T reference) { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && reference == null) { + throw new NullPointerException(); + } + return reference; + } + + /** + * Throws {@link NullPointerException} if {@code reference} is null. + * + * @param The type of the reference. + * @param reference The reference. + * @param errorMessage The exception message to use if the check fails. The message is converted + * to a string using {@link String#valueOf(Object)}. + * @return The non-null reference that was validated. + * @throws NullPointerException If {@code reference} is null. + */ + @SuppressWarnings({"contracts.postcondition.not.satisfied", "return.type.incompatible"}) + @EnsuresNonNull({"#1"}) + public static T checkNotNull(@Nullable T reference, Object errorMessage) { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && reference == null) { + throw new NullPointerException(String.valueOf(errorMessage)); + } + return reference; + } + + /** + * Throws {@link IllegalArgumentException} if {@code string} is null or zero length. + * + * @param string The string to check. + * @return The non-null, non-empty string that was validated. + * @throws IllegalArgumentException If {@code string} is null or 0-length. + */ + @SuppressWarnings({"contracts.postcondition.not.satisfied", "return.type.incompatible"}) + @EnsuresNonNull({"#1"}) + public static String checkNotEmpty(@Nullable String string) { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && TextUtils.isEmpty(string)) { + throw new IllegalArgumentException(); + } + return string; + } + + /** + * Throws {@link IllegalArgumentException} if {@code string} is null or zero length. + * + * @param string The string to check. + * @param errorMessage The exception message to use if the check fails. The message is converted + * to a string using {@link String#valueOf(Object)}. + * @return The non-null, non-empty string that was validated. + * @throws IllegalArgumentException If {@code string} is null or 0-length. + */ + @SuppressWarnings({"contracts.postcondition.not.satisfied", "return.type.incompatible"}) + @EnsuresNonNull({"#1"}) + public static String checkNotEmpty(@Nullable String string, Object errorMessage) { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && TextUtils.isEmpty(string)) { + throw new IllegalArgumentException(String.valueOf(errorMessage)); + } + return string; + } + + /** + * Throws {@link IllegalStateException} if the calling thread is not the application's main + * thread. + * + * @throws IllegalStateException If the calling thread is not the application's main thread. + */ + public static void checkMainThread() { + if (ExoPlayerLibraryInfo.ASSERTIONS_ENABLED && Looper.myLooper() != Looper.getMainLooper()) { + throw new IllegalStateException("Not in applications main thread"); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/AtomicFile.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/AtomicFile.java new file mode 100644 index 0000000000..d868a7d22a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/AtomicFile.java @@ -0,0 +1,201 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import java.io.File; +import java.io.FileInputStream; +import java.io.FileNotFoundException; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; + +/** + * A helper class for performing atomic operations on a file by creating a backup file until a write + * has successfully completed. + * + *

Atomic file guarantees file integrity by ensuring that a file has been completely written and + * synced to disk before removing its backup. As long as the backup file exists, the original file + * is considered to be invalid (left over from a previous attempt to write the file). + * + *

Atomic file does not confer any file locking semantics. Do not use this class when the file + * may be accessed or modified concurrently by multiple threads or processes. The caller is + * responsible for ensuring appropriate mutual exclusion invariants whenever it accesses the file. + */ +public final class AtomicFile { + + private static final String TAG = "AtomicFile"; + + private final File baseName; + private final File backupName; + + /** + * Create a new AtomicFile for a file located at the given File path. The secondary backup file + * will be the same file path with ".bak" appended. + */ + public AtomicFile(File baseName) { + this.baseName = baseName; + backupName = new File(baseName.getPath() + ".bak"); + } + + /** Returns whether the file or its backup exists. */ + public boolean exists() { + return baseName.exists() || backupName.exists(); + } + + /** Delete the atomic file. This deletes both the base and backup files. */ + public void delete() { + baseName.delete(); + backupName.delete(); + } + + /** + * Start a new write operation on the file. This returns an {@link OutputStream} to which you can + * write the new file data. If the whole data is written successfully you must call + * {@link #endWrite(OutputStream)}. On failure you should call {@link OutputStream#close()} + * only to free up resources used by it. + * + *

Example usage: + * + * 

+   *   DataOutputStream dataOutput = null;
+   *   try {
+   *     OutputStream outputStream = atomicFile.startWrite();
+   *     dataOutput = new DataOutputStream(outputStream); // Wrapper stream
+   *     dataOutput.write(data1);
+   *     dataOutput.write(data2);
+   *     atomicFile.endWrite(dataOutput); // Pass wrapper stream
+   *   } finally{
+   *     if (dataOutput != null) {
+   *       dataOutput.close();
+   *     }
+   *   }
+   *
+ * + *

Note that if another thread is currently performing a write, this will simply replace + * whatever that thread is writing with the new file being written by this thread, and when the + * other thread finishes the write the new write operation will no longer be safe (or will be + * lost). You must do your own threading protection for access to AtomicFile. + */ + public OutputStream startWrite() throws IOException { + // Rename the current file so it may be used as a backup during the next read + if (baseName.exists()) { + if (!backupName.exists()) { + if (!baseName.renameTo(backupName)) { + Log.w(TAG, "Couldn't rename file " + baseName + " to backup file " + backupName); + } + } else { + baseName.delete(); + } + } + OutputStream str; + try { + str = new AtomicFileOutputStream(baseName); + } catch (FileNotFoundException e) { + File parent = baseName.getParentFile(); + if (parent == null || !parent.mkdirs()) { + throw new IOException("Couldn't create " + baseName, e); + } + // Try again now that we've created the parent directory. + try { + str = new AtomicFileOutputStream(baseName); + } catch (FileNotFoundException e2) { + throw new IOException("Couldn't create " + baseName, e2); + } + } + return str; + } + + /** + * Call when you have successfully finished writing to the stream returned by {@link + * #startWrite()}. This will close, sync, and commit the new data. The next attempt to read the + * atomic file will return the new file stream. + * + * @param str Outer-most wrapper OutputStream used to write to the stream returned by {@link + * #startWrite()}. + * @see #startWrite() + */ + public void endWrite(OutputStream str) throws IOException { + str.close(); + // If close() throws exception, the next line is skipped. + backupName.delete(); + } + + /** + * Open the atomic file for reading. If there previously was an incomplete write, this will roll + * back to the last good data before opening for read. + * + *

Note that if another thread is currently performing a write, this will incorrectly consider + * it to be in the state of a bad write and roll back, causing the new data currently being + * written to be dropped. You must do your own threading protection for access to AtomicFile. + */ + public InputStream openRead() throws FileNotFoundException { + restoreBackup(); + return new FileInputStream(baseName); + } + + private void restoreBackup() { + if (backupName.exists()) { + baseName.delete(); + backupName.renameTo(baseName); + } + } + + private static final class AtomicFileOutputStream extends OutputStream { + + private final FileOutputStream fileOutputStream; + private boolean closed = false; + + public AtomicFileOutputStream(File file) throws FileNotFoundException { + fileOutputStream = new FileOutputStream(file); + } + + @Override + public void close() throws IOException { + if (closed) { + return; + } + closed = true; + flush(); + try { + fileOutputStream.getFD().sync(); + } catch (IOException e) { + Log.w(TAG, "Failed to sync file descriptor:", e); + } + fileOutputStream.close(); + } + + @Override + public void flush() throws IOException { + fileOutputStream.flush(); + } + + @Override + public void write(int b) throws IOException { + fileOutputStream.write(b); + } + + @Override + public void write(byte[] b) throws IOException { + fileOutputStream.write(b); + } + + @Override + public void write(byte[] b, int off, int len) throws IOException { + fileOutputStream.write(b, off, len); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Clock.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Clock.java new file mode 100644 index 0000000000..4247e1db7b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Clock.java @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.os.Handler; +import android.os.Looper; +import androidx.annotation.Nullable; + +/** + * An interface through which system clocks can be read and {@link HandlerWrapper}s created. The + * {@link #DEFAULT} implementation must be used for all non-test cases. + */ +public interface Clock { + + /** + * Default {@link Clock} to use for all non-test cases. + */ + Clock DEFAULT = new SystemClock(); + + /** @see android.os.SystemClock#elapsedRealtime() */ + long elapsedRealtime(); + + /** @see android.os.SystemClock#uptimeMillis() */ + long uptimeMillis(); + + /** @see android.os.SystemClock#sleep(long) */ + void sleep(long sleepTimeMs); + + /** + * Creates a {@link HandlerWrapper} using a specified looper and a specified callback for handling + * messages. + * + * @see Handler#Handler(Looper, Handler.Callback) + */ + HandlerWrapper createHandler(Looper looper, @Nullable Handler.Callback callback); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/CodecSpecificDataUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/CodecSpecificDataUtil.java new file mode 100644 index 0000000000..9c821c47c8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/CodecSpecificDataUtil.java @@ -0,0 +1,384 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.util.Pair; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import java.util.ArrayList; +import java.util.List; + +/** + * Provides static utility methods for manipulating various types of codec specific data. + */ +public final class CodecSpecificDataUtil { + + private static final byte[] NAL_START_CODE = new byte[] {0, 0, 0, 1}; + + private static final int AUDIO_SPECIFIC_CONFIG_FREQUENCY_INDEX_ARBITRARY = 0xF; + + private static final int[] AUDIO_SPECIFIC_CONFIG_SAMPLING_RATE_TABLE = new int[] { + 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350 + }; + + private static final int AUDIO_SPECIFIC_CONFIG_CHANNEL_CONFIGURATION_INVALID = -1; + /** + * In the channel configurations below, indicates a single channel element; (A, B) indicates a + * channel pair element; and [A] indicates a low-frequency effects element. + * The speaker mapping short forms used are: + * - FC: front center + * - BC: back center + * - FL/FR: front left/right + * - FCL/FCR: front center left/right + * - FTL/FTR: front top left/right + * - SL/SR: back surround left/right + * - BL/BR: back left/right + * - LFE: low frequency effects + */ + private static final int[] AUDIO_SPECIFIC_CONFIG_CHANNEL_COUNT_TABLE = + new int[] { + 0, + 1, /* mono: */ + 2, /* stereo: (FL, FR) */ + 3, /* 3.0: , (FL, FR) */ + 4, /* 4.0: , (FL, FR), */ + 5, /* 5.0 back: , (FL, FR), (SL, SR) */ + 6, /* 5.1 back: , (FL, FR), (SL, SR), , [LFE] */ + 8, /* 7.1 wide back: , (FCL, FCR), (FL, FR), (SL, SR), [LFE] */ + AUDIO_SPECIFIC_CONFIG_CHANNEL_CONFIGURATION_INVALID, + AUDIO_SPECIFIC_CONFIG_CHANNEL_CONFIGURATION_INVALID, + AUDIO_SPECIFIC_CONFIG_CHANNEL_CONFIGURATION_INVALID, + 7, /* 6.1: , (FL, FR), (SL, SR), , [LFE] */ + 8, /* 7.1: , (FL, FR), (SL, SR), (BL, BR), [LFE] */ + AUDIO_SPECIFIC_CONFIG_CHANNEL_CONFIGURATION_INVALID, + 8, /* 7.1 top: , (FL, FR), (SL, SR), [LFE], (FTL, FTR) */ + AUDIO_SPECIFIC_CONFIG_CHANNEL_CONFIGURATION_INVALID + }; + + // Advanced Audio Coding Low-Complexity profile. + private static final int AUDIO_OBJECT_TYPE_AAC_LC = 2; + // Spectral Band Replication. + private static final int AUDIO_OBJECT_TYPE_SBR = 5; + // Error Resilient Bit-Sliced Arithmetic Coding. + private static final int AUDIO_OBJECT_TYPE_ER_BSAC = 22; + // Parametric Stereo. + private static final int AUDIO_OBJECT_TYPE_PS = 29; + // Escape code for extended audio object types. + private static final int AUDIO_OBJECT_TYPE_ESCAPE = 31; + + private CodecSpecificDataUtil() {} + + /** + * Parses an AAC AudioSpecificConfig, as defined in ISO 14496-3 1.6.2.1 + * + * @param audioSpecificConfig A byte array containing the AudioSpecificConfig to parse. + * @return A pair consisting of the sample rate in Hz and the channel count. + * @throws ParserException If the AudioSpecificConfig cannot be parsed as it's not supported. + */ + public static Pair parseAacAudioSpecificConfig(byte[] audioSpecificConfig) + throws ParserException { + return parseAacAudioSpecificConfig(new ParsableBitArray(audioSpecificConfig), false); + } + + /** + * Parses an AAC AudioSpecificConfig, as defined in ISO 14496-3 1.6.2.1 + * + * @param bitArray A {@link ParsableBitArray} containing the AudioSpecificConfig to parse. The + * position is advanced to the end of the AudioSpecificConfig. + * @param forceReadToEnd Whether the entire AudioSpecificConfig should be read. Required for + * knowing the length of the configuration payload. + * @return A pair consisting of the sample rate in Hz and the channel count. + * @throws ParserException If the AudioSpecificConfig cannot be parsed as it's not supported. + */ + public static Pair parseAacAudioSpecificConfig( + ParsableBitArray bitArray, boolean forceReadToEnd) throws ParserException { + int audioObjectType = getAacAudioObjectType(bitArray); + int sampleRate = getAacSamplingFrequency(bitArray); + int channelConfiguration = bitArray.readBits(4); + if (audioObjectType == AUDIO_OBJECT_TYPE_SBR || audioObjectType == AUDIO_OBJECT_TYPE_PS) { + // For an AAC bitstream using spectral band replication (SBR) or parametric stereo (PS) with + // explicit signaling, we return the extension sampling frequency as the sample rate of the + // content; this is identical to the sample rate of the decoded output but may differ from + // the sample rate set above. + // Use the extensionSamplingFrequencyIndex. + sampleRate = getAacSamplingFrequency(bitArray); + audioObjectType = getAacAudioObjectType(bitArray); + if (audioObjectType == AUDIO_OBJECT_TYPE_ER_BSAC) { + // Use the extensionChannelConfiguration. + channelConfiguration = bitArray.readBits(4); + } + } + + if (forceReadToEnd) { + switch (audioObjectType) { + case 1: + case 2: + case 3: + case 4: + case 6: + case 7: + case 17: + case 19: + case 20: + case 21: + case 22: + case 23: + parseGaSpecificConfig(bitArray, audioObjectType, channelConfiguration); + break; + default: + throw new ParserException("Unsupported audio object type: " + audioObjectType); + } + switch (audioObjectType) { + case 17: + case 19: + case 20: + case 21: + case 22: + case 23: + int epConfig = bitArray.readBits(2); + if (epConfig == 2 || epConfig == 3) { + throw new ParserException("Unsupported epConfig: " + epConfig); + } + break; + } + } + // For supported containers, bits_to_decode() is always 0. + int channelCount = AUDIO_SPECIFIC_CONFIG_CHANNEL_COUNT_TABLE[channelConfiguration]; + Assertions.checkArgument(channelCount != AUDIO_SPECIFIC_CONFIG_CHANNEL_CONFIGURATION_INVALID); + return Pair.create(sampleRate, channelCount); + } + + /** + * Builds a simple HE-AAC LC AudioSpecificConfig, as defined in ISO 14496-3 1.6.2.1 + * + * @param sampleRate The sample rate in Hz. + * @param channelCount The channel count. + * @return The AudioSpecificConfig. + */ + public static byte[] buildAacLcAudioSpecificConfig(int sampleRate, int channelCount) { + int sampleRateIndex = C.INDEX_UNSET; + for (int i = 0; i < AUDIO_SPECIFIC_CONFIG_SAMPLING_RATE_TABLE.length; ++i) { + if (sampleRate == AUDIO_SPECIFIC_CONFIG_SAMPLING_RATE_TABLE[i]) { + sampleRateIndex = i; + } + } + int channelConfig = C.INDEX_UNSET; + for (int i = 0; i < AUDIO_SPECIFIC_CONFIG_CHANNEL_COUNT_TABLE.length; ++i) { + if (channelCount == AUDIO_SPECIFIC_CONFIG_CHANNEL_COUNT_TABLE[i]) { + channelConfig = i; + } + } + if (sampleRate == C.INDEX_UNSET || channelConfig == C.INDEX_UNSET) { + throw new IllegalArgumentException( + "Invalid sample rate or number of channels: " + sampleRate + ", " + channelCount); + } + return buildAacAudioSpecificConfig(AUDIO_OBJECT_TYPE_AAC_LC, sampleRateIndex, channelConfig); + } + + /** + * Builds a simple AudioSpecificConfig, as defined in ISO 14496-3 1.6.2.1 + * + * @param audioObjectType The audio object type. + * @param sampleRateIndex The sample rate index. + * @param channelConfig The channel configuration. + * @return The AudioSpecificConfig. + */ + public static byte[] buildAacAudioSpecificConfig(int audioObjectType, int sampleRateIndex, + int channelConfig) { + byte[] specificConfig = new byte[2]; + specificConfig[0] = (byte) (((audioObjectType << 3) & 0xF8) | ((sampleRateIndex >> 1) & 0x07)); + specificConfig[1] = (byte) (((sampleRateIndex << 7) & 0x80) | ((channelConfig << 3) & 0x78)); + return specificConfig; + } + + /** + * Parses an ALAC AudioSpecificConfig (i.e. an ALACSpecificConfig). + * + * @param audioSpecificConfig A byte array containing the AudioSpecificConfig to parse. + * @return A pair consisting of the sample rate in Hz and the channel count. + */ + public static Pair parseAlacAudioSpecificConfig(byte[] audioSpecificConfig) { + ParsableByteArray byteArray = new ParsableByteArray(audioSpecificConfig); + byteArray.setPosition(9); + int channelCount = byteArray.readUnsignedByte(); + byteArray.setPosition(20); + int sampleRate = byteArray.readUnsignedIntToInt(); + return Pair.create(sampleRate, channelCount); + } + + /** + * Builds an RFC 6381 AVC codec string using the provided parameters. + * + * @param profileIdc The encoding profile. + * @param constraintsFlagsAndReservedZero2Bits The constraint flags followed by the reserved zero + * 2 bits, all contained in the least significant byte of the integer. + * @param levelIdc The encoding level. + * @return An RFC 6381 AVC codec string built using the provided parameters. + */ + public static String buildAvcCodecString( + int profileIdc, int constraintsFlagsAndReservedZero2Bits, int levelIdc) { + return String.format( + "avc1.%02X%02X%02X", profileIdc, constraintsFlagsAndReservedZero2Bits, levelIdc); + } + + /** + * Constructs a NAL unit consisting of the NAL start code followed by the specified data. + * + * @param data An array containing the data that should follow the NAL start code. + * @param offset The start offset into {@code data}. + * @param length The number of bytes to copy from {@code data} + * @return The constructed NAL unit. + */ + public static byte[] buildNalUnit(byte[] data, int offset, int length) { + byte[] nalUnit = new byte[length + NAL_START_CODE.length]; + System.arraycopy(NAL_START_CODE, 0, nalUnit, 0, NAL_START_CODE.length); + System.arraycopy(data, offset, nalUnit, NAL_START_CODE.length, length); + return nalUnit; + } + + /** + * Splits an array of NAL units. + * + *

If the input consists of NAL start code delimited units, then the returned array consists of + * the split NAL units, each of which is still prefixed with the NAL start code. For any other + * input, null is returned. + * + * @param data An array of data. + * @return The individual NAL units, or null if the input did not consist of NAL start code + * delimited units. + */ + public static @Nullable byte[][] splitNalUnits(byte[] data) { + if (!isNalStartCode(data, 0)) { + // data does not consist of NAL start code delimited units. + return null; + } + List starts = new ArrayList<>(); + int nalUnitIndex = 0; + do { + starts.add(nalUnitIndex); + nalUnitIndex = findNalStartCode(data, nalUnitIndex + NAL_START_CODE.length); + } while (nalUnitIndex != C.INDEX_UNSET); + byte[][] split = new byte[starts.size()][]; + for (int i = 0; i < starts.size(); i++) { + int startIndex = starts.get(i); + int endIndex = i < starts.size() - 1 ? starts.get(i + 1) : data.length; + byte[] nal = new byte[endIndex - startIndex]; + System.arraycopy(data, startIndex, nal, 0, nal.length); + split[i] = nal; + } + return split; + } + + /** + * Finds the next occurrence of the NAL start code from a given index. + * + * @param data The data in which to search. + * @param index The first index to test. + * @return The index of the first byte of the found start code, or {@link C#INDEX_UNSET}. + */ + private static int findNalStartCode(byte[] data, int index) { + int endIndex = data.length - NAL_START_CODE.length; + for (int i = index; i <= endIndex; i++) { + if (isNalStartCode(data, i)) { + return i; + } + } + return C.INDEX_UNSET; + } + + /** + * Tests whether there exists a NAL start code at a given index. + * + * @param data The data. + * @param index The index to test. + * @return Whether there exists a start code that begins at {@code index}. + */ + private static boolean isNalStartCode(byte[] data, int index) { + if (data.length - index <= NAL_START_CODE.length) { + return false; + } + for (int j = 0; j < NAL_START_CODE.length; j++) { + if (data[index + j] != NAL_START_CODE[j]) { + return false; + } + } + return true; + } + + /** + * Returns the AAC audio object type as specified in 14496-3 (2005) Table 1.14. + * + * @param bitArray The bit array containing the audio specific configuration. + * @return The audio object type. + */ + private static int getAacAudioObjectType(ParsableBitArray bitArray) { + int audioObjectType = bitArray.readBits(5); + if (audioObjectType == AUDIO_OBJECT_TYPE_ESCAPE) { + audioObjectType = 32 + bitArray.readBits(6); + } + return audioObjectType; + } + + /** + * Returns the AAC sampling frequency (or extension sampling frequency) as specified in 14496-3 + * (2005) Table 1.13. + * + * @param bitArray The bit array containing the audio specific configuration. + * @return The sampling frequency. + */ + private static int getAacSamplingFrequency(ParsableBitArray bitArray) { + int samplingFrequency; + int frequencyIndex = bitArray.readBits(4); + if (frequencyIndex == AUDIO_SPECIFIC_CONFIG_FREQUENCY_INDEX_ARBITRARY) { + samplingFrequency = bitArray.readBits(24); + } else { + Assertions.checkArgument(frequencyIndex < 13); + samplingFrequency = AUDIO_SPECIFIC_CONFIG_SAMPLING_RATE_TABLE[frequencyIndex]; + } + return samplingFrequency; + } + + private static void parseGaSpecificConfig(ParsableBitArray bitArray, int audioObjectType, + int channelConfiguration) { + bitArray.skipBits(1); // frameLengthFlag. + boolean dependsOnCoreDecoder = bitArray.readBit(); + if (dependsOnCoreDecoder) { + bitArray.skipBits(14); // coreCoderDelay. + } + boolean extensionFlag = bitArray.readBit(); + if (channelConfiguration == 0) { + throw new UnsupportedOperationException(); // TODO: Implement programConfigElement(); + } + if (audioObjectType == 6 || audioObjectType == 20) { + bitArray.skipBits(3); // layerNr. + } + if (extensionFlag) { + if (audioObjectType == 22) { + bitArray.skipBits(16); // numOfSubFrame (5), layer_length(11). + } + if (audioObjectType == 17 || audioObjectType == 19 || audioObjectType == 20 + || audioObjectType == 23) { + // aacSectionDataResilienceFlag, aacScalefactorDataResilienceFlag, + // aacSpectralDataResilienceFlag. + bitArray.skipBits(3); + } + bitArray.skipBits(1); // extensionFlag3. + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ColorParser.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ColorParser.java new file mode 100644 index 0000000000..31b81fe16f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ColorParser.java @@ -0,0 +1,277 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.text.TextUtils; +import java.util.HashMap; +import java.util.Map; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +/** + * Parser for color expressions found in styling formats, e.g. TTML and CSS. + * + * @see WebVTT CSS Styling + * @see Timed Text Markup Language 2 (TTML2) - 10.3.5 + */ +public final class ColorParser { + + private static final String RGB = "rgb"; + private static final String RGBA = "rgba"; + + private static final Pattern RGB_PATTERN = Pattern.compile( + "^rgb\\((\\d{1,3}),(\\d{1,3}),(\\d{1,3})\\)$"); + + private static final Pattern RGBA_PATTERN_INT_ALPHA = Pattern.compile( + "^rgba\\((\\d{1,3}),(\\d{1,3}),(\\d{1,3}),(\\d{1,3})\\)$"); + + private static final Pattern RGBA_PATTERN_FLOAT_ALPHA = Pattern.compile( + "^rgba\\((\\d{1,3}),(\\d{1,3}),(\\d{1,3}),(\\d*\\.?\\d*?)\\)$"); + + private static final Map COLOR_MAP; + + /** + * Parses a TTML color expression. + * + * @param colorExpression The color expression. + * @return The parsed ARGB color. + */ + public static int parseTtmlColor(String colorExpression) { + return parseColorInternal(colorExpression, false); + } + + /** + * Parses a CSS color expression. + * + * @param colorExpression The color expression. + * @return The parsed ARGB color. + */ + public static int parseCssColor(String colorExpression) { + return parseColorInternal(colorExpression, true); + } + + private static int parseColorInternal(String colorExpression, boolean alphaHasFloatFormat) { + Assertions.checkArgument(!TextUtils.isEmpty(colorExpression)); + colorExpression = colorExpression.replace(" ", ""); + if (colorExpression.charAt(0) == '#') { + // Parse using Long to avoid failure when colorExpression is greater than #7FFFFFFF. + int color = (int) Long.parseLong(colorExpression.substring(1), 16); + if (colorExpression.length() == 7) { + // Set the alpha value + color |= 0xFF000000; + } else if (colorExpression.length() == 9) { + // We have #RRGGBBAA, but we need #AARRGGBB + color = ((color & 0xFF) << 24) | (color >>> 8); + } else { + throw new IllegalArgumentException(); + } + return color; + } else if (colorExpression.startsWith(RGBA)) { + Matcher matcher = (alphaHasFloatFormat ? RGBA_PATTERN_FLOAT_ALPHA : RGBA_PATTERN_INT_ALPHA) + .matcher(colorExpression); + if (matcher.matches()) { + return argb( + alphaHasFloatFormat ? (int) (255 * Float.parseFloat(matcher.group(4))) + : Integer.parseInt(matcher.group(4), 10), + Integer.parseInt(matcher.group(1), 10), + Integer.parseInt(matcher.group(2), 10), + Integer.parseInt(matcher.group(3), 10) + ); + } + } else if (colorExpression.startsWith(RGB)) { + Matcher matcher = RGB_PATTERN.matcher(colorExpression); + if (matcher.matches()) { + return rgb( + Integer.parseInt(matcher.group(1), 10), + Integer.parseInt(matcher.group(2), 10), + Integer.parseInt(matcher.group(3), 10) + ); + } + } else { + // we use our own color map + Integer color = COLOR_MAP.get(Util.toLowerInvariant(colorExpression)); + if (color != null) { + return color; + } + } + throw new IllegalArgumentException(); + } + + private static int argb(int alpha, int red, int green, int blue) { + return (alpha << 24) | (red << 16) | (green << 8) | blue; + } + + private static int rgb(int red, int green, int blue) { + return argb(0xFF, red, green, blue); + } + + static { + COLOR_MAP = new HashMap<>(); + COLOR_MAP.put("aliceblue", 0xFFF0F8FF); + COLOR_MAP.put("antiquewhite", 0xFFFAEBD7); + COLOR_MAP.put("aqua", 0xFF00FFFF); + COLOR_MAP.put("aquamarine", 0xFF7FFFD4); + COLOR_MAP.put("azure", 0xFFF0FFFF); + COLOR_MAP.put("beige", 0xFFF5F5DC); + COLOR_MAP.put("bisque", 0xFFFFE4C4); + COLOR_MAP.put("black", 0xFF000000); + COLOR_MAP.put("blanchedalmond", 0xFFFFEBCD); + COLOR_MAP.put("blue", 0xFF0000FF); + COLOR_MAP.put("blueviolet", 0xFF8A2BE2); + COLOR_MAP.put("brown", 0xFFA52A2A); + COLOR_MAP.put("burlywood", 0xFFDEB887); + COLOR_MAP.put("cadetblue", 0xFF5F9EA0); + COLOR_MAP.put("chartreuse", 0xFF7FFF00); + COLOR_MAP.put("chocolate", 0xFFD2691E); + COLOR_MAP.put("coral", 0xFFFF7F50); + COLOR_MAP.put("cornflowerblue", 0xFF6495ED); + COLOR_MAP.put("cornsilk", 0xFFFFF8DC); + COLOR_MAP.put("crimson", 0xFFDC143C); + COLOR_MAP.put("cyan", 0xFF00FFFF); + COLOR_MAP.put("darkblue", 0xFF00008B); + COLOR_MAP.put("darkcyan", 0xFF008B8B); + COLOR_MAP.put("darkgoldenrod", 0xFFB8860B); + COLOR_MAP.put("darkgray", 0xFFA9A9A9); + COLOR_MAP.put("darkgreen", 0xFF006400); + COLOR_MAP.put("darkgrey", 0xFFA9A9A9); + COLOR_MAP.put("darkkhaki", 0xFFBDB76B); + COLOR_MAP.put("darkmagenta", 0xFF8B008B); + COLOR_MAP.put("darkolivegreen", 0xFF556B2F); + COLOR_MAP.put("darkorange", 0xFFFF8C00); + COLOR_MAP.put("darkorchid", 0xFF9932CC); + COLOR_MAP.put("darkred", 0xFF8B0000); + COLOR_MAP.put("darksalmon", 0xFFE9967A); + COLOR_MAP.put("darkseagreen", 0xFF8FBC8F); + COLOR_MAP.put("darkslateblue", 0xFF483D8B); + COLOR_MAP.put("darkslategray", 0xFF2F4F4F); + COLOR_MAP.put("darkslategrey", 0xFF2F4F4F); + COLOR_MAP.put("darkturquoise", 0xFF00CED1); + COLOR_MAP.put("darkviolet", 0xFF9400D3); + COLOR_MAP.put("deeppink", 0xFFFF1493); + COLOR_MAP.put("deepskyblue", 0xFF00BFFF); + COLOR_MAP.put("dimgray", 0xFF696969); + COLOR_MAP.put("dimgrey", 0xFF696969); + COLOR_MAP.put("dodgerblue", 0xFF1E90FF); + COLOR_MAP.put("firebrick", 0xFFB22222); + COLOR_MAP.put("floralwhite", 0xFFFFFAF0); + COLOR_MAP.put("forestgreen", 0xFF228B22); + COLOR_MAP.put("fuchsia", 0xFFFF00FF); + COLOR_MAP.put("gainsboro", 0xFFDCDCDC); + COLOR_MAP.put("ghostwhite", 0xFFF8F8FF); + COLOR_MAP.put("gold", 0xFFFFD700); + COLOR_MAP.put("goldenrod", 0xFFDAA520); + COLOR_MAP.put("gray", 0xFF808080); + COLOR_MAP.put("green", 0xFF008000); + COLOR_MAP.put("greenyellow", 0xFFADFF2F); + COLOR_MAP.put("grey", 0xFF808080); + COLOR_MAP.put("honeydew", 0xFFF0FFF0); + COLOR_MAP.put("hotpink", 0xFFFF69B4); + COLOR_MAP.put("indianred", 0xFFCD5C5C); + COLOR_MAP.put("indigo", 0xFF4B0082); + COLOR_MAP.put("ivory", 0xFFFFFFF0); + COLOR_MAP.put("khaki", 0xFFF0E68C); + COLOR_MAP.put("lavender", 0xFFE6E6FA); + COLOR_MAP.put("lavenderblush", 0xFFFFF0F5); + COLOR_MAP.put("lawngreen", 0xFF7CFC00); + COLOR_MAP.put("lemonchiffon", 0xFFFFFACD); + COLOR_MAP.put("lightblue", 0xFFADD8E6); + COLOR_MAP.put("lightcoral", 0xFFF08080); + COLOR_MAP.put("lightcyan", 0xFFE0FFFF); + COLOR_MAP.put("lightgoldenrodyellow", 0xFFFAFAD2); + COLOR_MAP.put("lightgray", 0xFFD3D3D3); + COLOR_MAP.put("lightgreen", 0xFF90EE90); + COLOR_MAP.put("lightgrey", 0xFFD3D3D3); + COLOR_MAP.put("lightpink", 0xFFFFB6C1); + COLOR_MAP.put("lightsalmon", 0xFFFFA07A); + COLOR_MAP.put("lightseagreen", 0xFF20B2AA); + COLOR_MAP.put("lightskyblue", 0xFF87CEFA); + COLOR_MAP.put("lightslategray", 0xFF778899); + COLOR_MAP.put("lightslategrey", 0xFF778899); + COLOR_MAP.put("lightsteelblue", 0xFFB0C4DE); + COLOR_MAP.put("lightyellow", 0xFFFFFFE0); + COLOR_MAP.put("lime", 0xFF00FF00); + COLOR_MAP.put("limegreen", 0xFF32CD32); + COLOR_MAP.put("linen", 0xFFFAF0E6); + COLOR_MAP.put("magenta", 0xFFFF00FF); + COLOR_MAP.put("maroon", 0xFF800000); + COLOR_MAP.put("mediumaquamarine", 0xFF66CDAA); + COLOR_MAP.put("mediumblue", 0xFF0000CD); + COLOR_MAP.put("mediumorchid", 0xFFBA55D3); + COLOR_MAP.put("mediumpurple", 0xFF9370DB); + COLOR_MAP.put("mediumseagreen", 0xFF3CB371); + COLOR_MAP.put("mediumslateblue", 0xFF7B68EE); + COLOR_MAP.put("mediumspringgreen", 0xFF00FA9A); + COLOR_MAP.put("mediumturquoise", 0xFF48D1CC); + COLOR_MAP.put("mediumvioletred", 0xFFC71585); + COLOR_MAP.put("midnightblue", 0xFF191970); + COLOR_MAP.put("mintcream", 0xFFF5FFFA); + COLOR_MAP.put("mistyrose", 0xFFFFE4E1); + COLOR_MAP.put("moccasin", 0xFFFFE4B5); + COLOR_MAP.put("navajowhite", 0xFFFFDEAD); + COLOR_MAP.put("navy", 0xFF000080); + COLOR_MAP.put("oldlace", 0xFFFDF5E6); + COLOR_MAP.put("olive", 0xFF808000); + COLOR_MAP.put("olivedrab", 0xFF6B8E23); + COLOR_MAP.put("orange", 0xFFFFA500); + COLOR_MAP.put("orangered", 0xFFFF4500); + COLOR_MAP.put("orchid", 0xFFDA70D6); + COLOR_MAP.put("palegoldenrod", 0xFFEEE8AA); + COLOR_MAP.put("palegreen", 0xFF98FB98); + COLOR_MAP.put("paleturquoise", 0xFFAFEEEE); + COLOR_MAP.put("palevioletred", 0xFFDB7093); + COLOR_MAP.put("papayawhip", 0xFFFFEFD5); + COLOR_MAP.put("peachpuff", 0xFFFFDAB9); + COLOR_MAP.put("peru", 0xFFCD853F); + COLOR_MAP.put("pink", 0xFFFFC0CB); + COLOR_MAP.put("plum", 0xFFDDA0DD); + COLOR_MAP.put("powderblue", 0xFFB0E0E6); + COLOR_MAP.put("purple", 0xFF800080); + COLOR_MAP.put("rebeccapurple", 0xFF663399); + COLOR_MAP.put("red", 0xFFFF0000); + COLOR_MAP.put("rosybrown", 0xFFBC8F8F); + COLOR_MAP.put("royalblue", 0xFF4169E1); + COLOR_MAP.put("saddlebrown", 0xFF8B4513); + COLOR_MAP.put("salmon", 0xFFFA8072); + COLOR_MAP.put("sandybrown", 0xFFF4A460); + COLOR_MAP.put("seagreen", 0xFF2E8B57); + COLOR_MAP.put("seashell", 0xFFFFF5EE); + COLOR_MAP.put("sienna", 0xFFA0522D); + COLOR_MAP.put("silver", 0xFFC0C0C0); + COLOR_MAP.put("skyblue", 0xFF87CEEB); + COLOR_MAP.put("slateblue", 0xFF6A5ACD); + COLOR_MAP.put("slategray", 0xFF708090); + COLOR_MAP.put("slategrey", 0xFF708090); + COLOR_MAP.put("snow", 0xFFFFFAFA); + COLOR_MAP.put("springgreen", 0xFF00FF7F); + COLOR_MAP.put("steelblue", 0xFF4682B4); + COLOR_MAP.put("tan", 0xFFD2B48C); + COLOR_MAP.put("teal", 0xFF008080); + COLOR_MAP.put("thistle", 0xFFD8BFD8); + COLOR_MAP.put("tomato", 0xFFFF6347); + COLOR_MAP.put("transparent", 0x00000000); + COLOR_MAP.put("turquoise", 0xFF40E0D0); + COLOR_MAP.put("violet", 0xFFEE82EE); + COLOR_MAP.put("wheat", 0xFFF5DEB3); + COLOR_MAP.put("white", 0xFFFFFFFF); + COLOR_MAP.put("whitesmoke", 0xFFF5F5F5); + COLOR_MAP.put("yellow", 0xFFFFFF00); + COLOR_MAP.put("yellowgreen", 0xFF9ACD32); + } + + private ColorParser() { + // Prevent instantiation. + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ConditionVariable.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ConditionVariable.java new file mode 100644 index 0000000000..3866edced1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ConditionVariable.java @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +/** + * An interruptible condition variable whose {@link #open()} and {@link #close()} methods return + * whether they resulted in a change of state. + */ +public final class ConditionVariable { + + private boolean isOpen; + + /** + * Opens the condition and releases all threads that are blocked. + * + * @return True if the condition variable was opened. False if it was already open. + */ + public synchronized boolean open() { + if (isOpen) { + return false; + } + isOpen = true; + notifyAll(); + return true; + } + + /** + * Closes the condition. + * + * @return True if the condition variable was closed. False if it was already closed. + */ + public synchronized boolean close() { + boolean wasOpen = isOpen; + isOpen = false; + return wasOpen; + } + + /** + * Blocks until the condition is opened. + * + * @throws InterruptedException If the thread is interrupted. + */ + public synchronized void block() throws InterruptedException { + while (!isOpen) { + wait(); + } + } + + /** + * Blocks until the condition is opened or until {@code timeout} milliseconds have passed. + * + * @param timeout The maximum time to wait in milliseconds. + * @return True if the condition was opened, false if the call returns because of the timeout. + * @throws InterruptedException If the thread is interrupted. + */ + public synchronized boolean block(long timeout) throws InterruptedException { + long now = android.os.SystemClock.elapsedRealtime(); + long end = now + timeout; + while (!isOpen && now < end) { + wait(end - now); + now = android.os.SystemClock.elapsedRealtime(); + } + return isOpen; + } + + /** Returns whether the condition is opened. */ + public synchronized boolean isOpen() { + return isOpen; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/EGLSurfaceTexture.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/EGLSurfaceTexture.java new file mode 100644 index 0000000000..1f48f718b7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/EGLSurfaceTexture.java @@ -0,0 +1,312 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.annotation.TargetApi; +import android.graphics.SurfaceTexture; +import android.opengl.EGL14; +import android.opengl.EGLConfig; +import android.opengl.EGLContext; +import android.opengl.EGLDisplay; +import android.opengl.EGLSurface; +import android.opengl.GLES20; +import android.os.Handler; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** Generates a {@link SurfaceTexture} using EGL/GLES functions. */ +@TargetApi(17) +public final class EGLSurfaceTexture implements SurfaceTexture.OnFrameAvailableListener, Runnable { + + /** Listener to be called when the texture image on {@link SurfaceTexture} has been updated. */ + public interface TextureImageListener { + /** Called when the {@link SurfaceTexture} receives a new frame from its image producer. */ + void onFrameAvailable(); + } + + /** + * Secure mode to be used by the EGL surface and context. One of {@link #SECURE_MODE_NONE}, {@link + * #SECURE_MODE_SURFACELESS_CONTEXT} or {@link #SECURE_MODE_PROTECTED_PBUFFER}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({SECURE_MODE_NONE, SECURE_MODE_SURFACELESS_CONTEXT, SECURE_MODE_PROTECTED_PBUFFER}) + public @interface SecureMode {} + + /** No secure EGL surface and context required. */ + public static final int SECURE_MODE_NONE = 0; + /** Creating a surfaceless, secured EGL context. */ + public static final int SECURE_MODE_SURFACELESS_CONTEXT = 1; + /** Creating a secure surface backed by a pixel buffer. */ + public static final int SECURE_MODE_PROTECTED_PBUFFER = 2; + + private static final int EGL_SURFACE_WIDTH = 1; + private static final int EGL_SURFACE_HEIGHT = 1; + + private static final int[] EGL_CONFIG_ATTRIBUTES = + new int[] { + EGL14.EGL_RENDERABLE_TYPE, EGL14.EGL_OPENGL_ES2_BIT, + EGL14.EGL_RED_SIZE, 8, + EGL14.EGL_GREEN_SIZE, 8, + EGL14.EGL_BLUE_SIZE, 8, + EGL14.EGL_ALPHA_SIZE, 8, + EGL14.EGL_DEPTH_SIZE, 0, + EGL14.EGL_CONFIG_CAVEAT, EGL14.EGL_NONE, + EGL14.EGL_SURFACE_TYPE, EGL14.EGL_WINDOW_BIT, + EGL14.EGL_NONE + }; + + private static final int EGL_PROTECTED_CONTENT_EXT = 0x32C0; + + /** A runtime exception to be thrown if some EGL operations failed. */ + public static final class GlException extends RuntimeException { + private GlException(String msg) { + super(msg); + } + } + + private final Handler handler; + private final int[] textureIdHolder; + @Nullable private final TextureImageListener callback; + + @Nullable private EGLDisplay display; + @Nullable private EGLContext context; + @Nullable private EGLSurface surface; + @Nullable private SurfaceTexture texture; + + /** + * @param handler The {@link Handler} that will be used to call {@link + * SurfaceTexture#updateTexImage()} to update images on the {@link SurfaceTexture}. Note that + * {@link #init(int)} has to be called on the same looper thread as the {@link Handler}'s + * looper. + */ + public EGLSurfaceTexture(Handler handler) { + this(handler, /* callback= */ null); + } + + /** + * @param handler The {@link Handler} that will be used to call {@link + * SurfaceTexture#updateTexImage()} to update images on the {@link SurfaceTexture}. Note that + * {@link #init(int)} has to be called on the same looper thread as the looper of the {@link + * Handler}. + * @param callback The {@link TextureImageListener} to be called when the texture image on {@link + * SurfaceTexture} has been updated. This callback will be called on the same handler thread + * as the {@code handler}. + */ + public EGLSurfaceTexture(Handler handler, @Nullable TextureImageListener callback) { + this.handler = handler; + this.callback = callback; + textureIdHolder = new int[1]; + } + + /** + * Initializes required EGL parameters and creates the {@link SurfaceTexture}. + * + * @param secureMode The {@link SecureMode} to be used for EGL surface. + */ + public void init(@SecureMode int secureMode) { + display = getDefaultDisplay(); + EGLConfig config = chooseEGLConfig(display); + context = createEGLContext(display, config, secureMode); + surface = createEGLSurface(display, config, context, secureMode); + generateTextureIds(textureIdHolder); + texture = new SurfaceTexture(textureIdHolder[0]); + texture.setOnFrameAvailableListener(this); + } + + /** Releases all allocated resources. */ + @SuppressWarnings({"nullness:argument.type.incompatible"}) + public void release() { + handler.removeCallbacks(this); + try { + if (texture != null) { + texture.release(); + GLES20.glDeleteTextures(1, textureIdHolder, 0); + } + } finally { + if (display != null && !display.equals(EGL14.EGL_NO_DISPLAY)) { + EGL14.eglMakeCurrent( + display, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT); + } + if (surface != null && !surface.equals(EGL14.EGL_NO_SURFACE)) { + EGL14.eglDestroySurface(display, surface); + } + if (context != null) { + EGL14.eglDestroyContext(display, context); + } + // EGL14.eglReleaseThread could crash before Android K (see [internal: b/11327779]). + if (Util.SDK_INT >= 19) { + EGL14.eglReleaseThread(); + } + if (display != null && !display.equals(EGL14.EGL_NO_DISPLAY)) { + // Android is unusual in that it uses a reference-counted EGLDisplay. So for + // every eglInitialize() we need an eglTerminate(). + EGL14.eglTerminate(display); + } + display = null; + context = null; + surface = null; + texture = null; + } + } + + /** + * Returns the wrapped {@link SurfaceTexture}. This can only be called after {@link #init(int)}. + */ + public SurfaceTexture getSurfaceTexture() { + return Assertions.checkNotNull(texture); + } + + // SurfaceTexture.OnFrameAvailableListener + + @Override + public void onFrameAvailable(SurfaceTexture surfaceTexture) { + handler.post(this); + } + + // Runnable + + @Override + public void run() { + // Run on the provided handler thread when a new image frame is available. + dispatchOnFrameAvailable(); + if (texture != null) { + try { + texture.updateTexImage(); + } catch (RuntimeException e) { + // Ignore + } + } + } + + private void dispatchOnFrameAvailable() { + if (callback != null) { + callback.onFrameAvailable(); + } + } + + private static EGLDisplay getDefaultDisplay() { + EGLDisplay display = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY); + if (display == null) { + throw new GlException("eglGetDisplay failed"); + } + + int[] version = new int[2]; + boolean eglInitialized = + EGL14.eglInitialize(display, version, /* majorOffset= */ 0, version, /* minorOffset= */ 1); + if (!eglInitialized) { + throw new GlException("eglInitialize failed"); + } + return display; + } + + private static EGLConfig chooseEGLConfig(EGLDisplay display) { + EGLConfig[] configs = new EGLConfig[1]; + int[] numConfigs = new int[1]; + boolean success = + EGL14.eglChooseConfig( + display, + EGL_CONFIG_ATTRIBUTES, + /* attrib_listOffset= */ 0, + configs, + /* configsOffset= */ 0, + /* config_size= */ 1, + numConfigs, + /* num_configOffset= */ 0); + if (!success || numConfigs[0] <= 0 || configs[0] == null) { + throw new GlException( + Util.formatInvariant( + /* format= */ "eglChooseConfig failed: success=%b, numConfigs[0]=%d, configs[0]=%s", + success, numConfigs[0], configs[0])); + } + + return configs[0]; + } + + private static EGLContext createEGLContext( + EGLDisplay display, EGLConfig config, @SecureMode int secureMode) { + int[] glAttributes; + if (secureMode == SECURE_MODE_NONE) { + glAttributes = new int[] {EGL14.EGL_CONTEXT_CLIENT_VERSION, 2, EGL14.EGL_NONE}; + } else { + glAttributes = + new int[] { + EGL14.EGL_CONTEXT_CLIENT_VERSION, + 2, + EGL_PROTECTED_CONTENT_EXT, + EGL14.EGL_TRUE, + EGL14.EGL_NONE + }; + } + EGLContext context = + EGL14.eglCreateContext( + display, config, android.opengl.EGL14.EGL_NO_CONTEXT, glAttributes, 0); + if (context == null) { + throw new GlException("eglCreateContext failed"); + } + return context; + } + + private static EGLSurface createEGLSurface( + EGLDisplay display, EGLConfig config, EGLContext context, @SecureMode int secureMode) { + EGLSurface surface; + if (secureMode == SECURE_MODE_SURFACELESS_CONTEXT) { + surface = EGL14.EGL_NO_SURFACE; + } else { + int[] pbufferAttributes; + if (secureMode == SECURE_MODE_PROTECTED_PBUFFER) { + pbufferAttributes = + new int[] { + EGL14.EGL_WIDTH, + EGL_SURFACE_WIDTH, + EGL14.EGL_HEIGHT, + EGL_SURFACE_HEIGHT, + EGL_PROTECTED_CONTENT_EXT, + EGL14.EGL_TRUE, + EGL14.EGL_NONE + }; + } else { + pbufferAttributes = + new int[] { + EGL14.EGL_WIDTH, + EGL_SURFACE_WIDTH, + EGL14.EGL_HEIGHT, + EGL_SURFACE_HEIGHT, + EGL14.EGL_NONE + }; + } + surface = EGL14.eglCreatePbufferSurface(display, config, pbufferAttributes, /* offset= */ 0); + if (surface == null) { + throw new GlException("eglCreatePbufferSurface failed"); + } + } + + boolean eglMadeCurrent = + EGL14.eglMakeCurrent(display, /* draw= */ surface, /* read= */ surface, context); + if (!eglMadeCurrent) { + throw new GlException("eglMakeCurrent failed"); + } + return surface; + } + + private static void generateTextureIds(int[] textureIdHolder) { + GLES20.glGenTextures(/* n= */ 1, textureIdHolder, /* offset= */ 0); + GlUtil.checkGlError(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ErrorMessageProvider.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ErrorMessageProvider.java new file mode 100644 index 0000000000..0eca418cd8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ErrorMessageProvider.java @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.util.Pair; + +/** Converts throwables into error codes and user readable error messages. */ +public interface ErrorMessageProvider { + + /** + * Returns a pair consisting of an error code and a user readable error message for the given + * throwable. + * + * @param throwable The throwable for which an error code and message should be generated. + * @return A pair consisting of an error code and a user readable error message. + */ + Pair getErrorMessage(T throwable); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/EventDispatcher.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/EventDispatcher.java new file mode 100644 index 0000000000..6e9a3798bf --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/EventDispatcher.java @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.os.Handler; +import java.util.concurrent.CopyOnWriteArrayList; + +/** + * Event dispatcher which allows listener registration. + * + * @param The type of listener. + */ +public final class EventDispatcher { + + /** Functional interface to send an event. */ + public interface Event { + + /** + * Sends the event to a listener. + * + * @param listener The listener to send the event to. + */ + void sendTo(T listener); + } + + /** The list of listeners and handlers. */ + private final CopyOnWriteArrayList> listeners; + + /** Creates an event dispatcher. */ + public EventDispatcher() { + listeners = new CopyOnWriteArrayList<>(); + } + + /** Adds a listener to the event dispatcher. */ + public void addListener(Handler handler, T eventListener) { + Assertions.checkArgument(handler != null && eventListener != null); + removeListener(eventListener); + listeners.add(new HandlerAndListener<>(handler, eventListener)); + } + + /** Removes a listener from the event dispatcher. */ + public void removeListener(T eventListener) { + for (HandlerAndListener handlerAndListener : listeners) { + if (handlerAndListener.listener == eventListener) { + handlerAndListener.release(); + listeners.remove(handlerAndListener); + } + } + } + + /** + * Dispatches an event to all registered listeners. + * + * @param event The {@link Event}. + */ + public void dispatch(Event event) { + for (HandlerAndListener handlerAndListener : listeners) { + handlerAndListener.dispatch(event); + } + } + + private static final class HandlerAndListener { + + private final Handler handler; + private final T listener; + + private boolean released; + + public HandlerAndListener(Handler handler, T eventListener) { + this.handler = handler; + this.listener = eventListener; + } + + public void release() { + released = true; + } + + public void dispatch(Event event) { + handler.post( + () -> { + if (!released) { + event.sendTo(listener); + } + }); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/EventLogger.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/EventLogger.java new file mode 100644 index 0000000000..0c2a6abcf1 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/EventLogger.java @@ -0,0 +1,651 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.os.SystemClock; +import android.text.TextUtils; +import android.view.Surface; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player.PlaybackSuppressionReason; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities.AdaptiveSupport; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Timeline; +import org.mozilla.thirdparty.com.google.android.exoplayer2.analytics.AnalyticsListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioAttributes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderCounters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.LoadEventInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSourceEventListener.MediaLoadData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroup; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.TrackGroupArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.MappingTrackSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.MappingTrackSelector.MappedTrackInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelection; +import org.mozilla.thirdparty.com.google.android.exoplayer2.trackselection.TrackSelectionArray; +import java.io.IOException; +import java.text.NumberFormat; +import java.util.Locale; + +/** Logs events from {@link Player} and other core components using {@link Log}. */ +@SuppressWarnings("UngroupedOverloads") +public class EventLogger implements AnalyticsListener { + + private static final String DEFAULT_TAG = "EventLogger"; + private static final int MAX_TIMELINE_ITEM_LINES = 3; + private static final NumberFormat TIME_FORMAT; + static { + TIME_FORMAT = NumberFormat.getInstance(Locale.US); + TIME_FORMAT.setMinimumFractionDigits(2); + TIME_FORMAT.setMaximumFractionDigits(2); + TIME_FORMAT.setGroupingUsed(false); + } + + @Nullable private final MappingTrackSelector trackSelector; + private final String tag; + private final Timeline.Window window; + private final Timeline.Period period; + private final long startTimeMs; + + /** + * Creates event logger. + * + * @param trackSelector The mapping track selector used by the player. May be null if detailed + * logging of track mapping is not required. + */ + public EventLogger(@Nullable MappingTrackSelector trackSelector) { + this(trackSelector, DEFAULT_TAG); + } + + /** + * Creates event logger. + * + * @param trackSelector The mapping track selector used by the player. May be null if detailed + * logging of track mapping is not required. + * @param tag The tag used for logging. + */ + public EventLogger(@Nullable MappingTrackSelector trackSelector, String tag) { + this.trackSelector = trackSelector; + this.tag = tag; + window = new Timeline.Window(); + period = new Timeline.Period(); + startTimeMs = SystemClock.elapsedRealtime(); + } + + // AnalyticsListener + + @Override + public void onLoadingChanged(EventTime eventTime, boolean isLoading) { + logd(eventTime, "loading", Boolean.toString(isLoading)); + } + + @Override + public void onPlayerStateChanged( + EventTime eventTime, boolean playWhenReady, @Player.State int state) { + logd(eventTime, "state", playWhenReady + ", " + getStateString(state)); + } + + @Override + public void onPlaybackSuppressionReasonChanged( + EventTime eventTime, @PlaybackSuppressionReason int playbackSuppressionReason) { + logd( + eventTime, + "playbackSuppressionReason", + getPlaybackSuppressionReasonString(playbackSuppressionReason)); + } + + @Override + public void onIsPlayingChanged(EventTime eventTime, boolean isPlaying) { + logd(eventTime, "isPlaying", Boolean.toString(isPlaying)); + } + + @Override + public void onRepeatModeChanged(EventTime eventTime, @Player.RepeatMode int repeatMode) { + logd(eventTime, "repeatMode", getRepeatModeString(repeatMode)); + } + + @Override + public void onShuffleModeChanged(EventTime eventTime, boolean shuffleModeEnabled) { + logd(eventTime, "shuffleModeEnabled", Boolean.toString(shuffleModeEnabled)); + } + + @Override + public void onPositionDiscontinuity(EventTime eventTime, @Player.DiscontinuityReason int reason) { + logd(eventTime, "positionDiscontinuity", getDiscontinuityReasonString(reason)); + } + + @Override + public void onSeekStarted(EventTime eventTime) { + logd(eventTime, "seekStarted"); + } + + @Override + public void onPlaybackParametersChanged( + EventTime eventTime, PlaybackParameters playbackParameters) { + logd( + eventTime, + "playbackParameters", + Util.formatInvariant( + "speed=%.2f, pitch=%.2f, skipSilence=%s", + playbackParameters.speed, playbackParameters.pitch, playbackParameters.skipSilence)); + } + + @Override + public void onTimelineChanged(EventTime eventTime, @Player.TimelineChangeReason int reason) { + int periodCount = eventTime.timeline.getPeriodCount(); + int windowCount = eventTime.timeline.getWindowCount(); + logd( + "timeline [" + + getEventTimeString(eventTime) + + ", periodCount=" + + periodCount + + ", windowCount=" + + windowCount + + ", reason=" + + getTimelineChangeReasonString(reason)); + for (int i = 0; i < Math.min(periodCount, MAX_TIMELINE_ITEM_LINES); i++) { + eventTime.timeline.getPeriod(i, period); + logd(" " + "period [" + getTimeString(period.getDurationMs()) + "]"); + } + if (periodCount > MAX_TIMELINE_ITEM_LINES) { + logd(" ..."); + } + for (int i = 0; i < Math.min(windowCount, MAX_TIMELINE_ITEM_LINES); i++) { + eventTime.timeline.getWindow(i, window); + logd( + " " + + "window [" + + getTimeString(window.getDurationMs()) + + ", " + + window.isSeekable + + ", " + + window.isDynamic + + "]"); + } + if (windowCount > MAX_TIMELINE_ITEM_LINES) { + logd(" ..."); + } + logd("]"); + } + + @Override + public void onPlayerError(EventTime eventTime, ExoPlaybackException e) { + loge(eventTime, "playerFailed", e); + } + + @Override + public void onTracksChanged( + EventTime eventTime, TrackGroupArray ignored, TrackSelectionArray trackSelections) { + MappedTrackInfo mappedTrackInfo = + trackSelector != null ? trackSelector.getCurrentMappedTrackInfo() : null; + if (mappedTrackInfo == null) { + logd(eventTime, "tracks", "[]"); + return; + } + logd("tracks [" + getEventTimeString(eventTime)); + // Log tracks associated to renderers. + int rendererCount = mappedTrackInfo.getRendererCount(); + for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) { + TrackGroupArray rendererTrackGroups = mappedTrackInfo.getTrackGroups(rendererIndex); + TrackSelection trackSelection = trackSelections.get(rendererIndex); + if (rendererTrackGroups.length > 0) { + logd(" Renderer:" + rendererIndex + " ["); + for (int groupIndex = 0; groupIndex < rendererTrackGroups.length; groupIndex++) { + TrackGroup trackGroup = rendererTrackGroups.get(groupIndex); + String adaptiveSupport = + getAdaptiveSupportString( + trackGroup.length, + mappedTrackInfo.getAdaptiveSupport( + rendererIndex, groupIndex, /* includeCapabilitiesExceededTracks= */ false)); + logd(" Group:" + groupIndex + ", adaptive_supported=" + adaptiveSupport + " ["); + for (int trackIndex = 0; trackIndex < trackGroup.length; trackIndex++) { + String status = getTrackStatusString(trackSelection, trackGroup, trackIndex); + String formatSupport = + RendererCapabilities.getFormatSupportString( + mappedTrackInfo.getTrackSupport(rendererIndex, groupIndex, trackIndex)); + logd( + " " + + status + + " Track:" + + trackIndex + + ", " + + Format.toLogString(trackGroup.getFormat(trackIndex)) + + ", supported=" + + formatSupport); + } + logd(" ]"); + } + // Log metadata for at most one of the tracks selected for the renderer. + if (trackSelection != null) { + for (int selectionIndex = 0; selectionIndex < trackSelection.length(); selectionIndex++) { + Metadata metadata = trackSelection.getFormat(selectionIndex).metadata; + if (metadata != null) { + logd(" Metadata ["); + printMetadata(metadata, " "); + logd(" ]"); + break; + } + } + } + logd(" ]"); + } + } + // Log tracks not associated with a renderer. + TrackGroupArray unassociatedTrackGroups = mappedTrackInfo.getUnmappedTrackGroups(); + if (unassociatedTrackGroups.length > 0) { + logd(" Renderer:None ["); + for (int groupIndex = 0; groupIndex < unassociatedTrackGroups.length; groupIndex++) { + logd(" Group:" + groupIndex + " ["); + TrackGroup trackGroup = unassociatedTrackGroups.get(groupIndex); + for (int trackIndex = 0; trackIndex < trackGroup.length; trackIndex++) { + String status = getTrackStatusString(false); + String formatSupport = + RendererCapabilities.getFormatSupportString( + RendererCapabilities.FORMAT_UNSUPPORTED_TYPE); + logd( + " " + + status + + " Track:" + + trackIndex + + ", " + + Format.toLogString(trackGroup.getFormat(trackIndex)) + + ", supported=" + + formatSupport); + } + logd(" ]"); + } + logd(" ]"); + } + logd("]"); + } + + @Override + public void onSeekProcessed(EventTime eventTime) { + logd(eventTime, "seekProcessed"); + } + + @Override + public void onMetadata(EventTime eventTime, Metadata metadata) { + logd("metadata [" + getEventTimeString(eventTime)); + printMetadata(metadata, " "); + logd("]"); + } + + @Override + public void onDecoderEnabled(EventTime eventTime, int trackType, DecoderCounters counters) { + logd(eventTime, "decoderEnabled", Util.getTrackTypeString(trackType)); + } + + @Override + public void onAudioSessionId(EventTime eventTime, int audioSessionId) { + logd(eventTime, "audioSessionId", Integer.toString(audioSessionId)); + } + + @Override + public void onAudioAttributesChanged(EventTime eventTime, AudioAttributes audioAttributes) { + logd( + eventTime, + "audioAttributes", + audioAttributes.contentType + + "," + + audioAttributes.flags + + "," + + audioAttributes.usage + + "," + + audioAttributes.allowedCapturePolicy); + } + + @Override + public void onVolumeChanged(EventTime eventTime, float volume) { + logd(eventTime, "volume", Float.toString(volume)); + } + + @Override + public void onDecoderInitialized( + EventTime eventTime, int trackType, String decoderName, long initializationDurationMs) { + logd(eventTime, "decoderInitialized", Util.getTrackTypeString(trackType) + ", " + decoderName); + } + + @Override + public void onDecoderInputFormatChanged(EventTime eventTime, int trackType, Format format) { + logd( + eventTime, + "decoderInputFormat", + Util.getTrackTypeString(trackType) + ", " + Format.toLogString(format)); + } + + @Override + public void onDecoderDisabled(EventTime eventTime, int trackType, DecoderCounters counters) { + logd(eventTime, "decoderDisabled", Util.getTrackTypeString(trackType)); + } + + @Override + public void onAudioUnderrun( + EventTime eventTime, int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs) { + loge( + eventTime, + "audioTrackUnderrun", + bufferSize + ", " + bufferSizeMs + ", " + elapsedSinceLastFeedMs + "]", + null); + } + + @Override + public void onDroppedVideoFrames(EventTime eventTime, int count, long elapsedMs) { + logd(eventTime, "droppedFrames", Integer.toString(count)); + } + + @Override + public void onVideoSizeChanged( + EventTime eventTime, + int width, + int height, + int unappliedRotationDegrees, + float pixelWidthHeightRatio) { + logd(eventTime, "videoSize", width + ", " + height); + } + + @Override + public void onRenderedFirstFrame(EventTime eventTime, @Nullable Surface surface) { + logd(eventTime, "renderedFirstFrame", String.valueOf(surface)); + } + + @Override + public void onMediaPeriodCreated(EventTime eventTime) { + logd(eventTime, "mediaPeriodCreated"); + } + + @Override + public void onMediaPeriodReleased(EventTime eventTime) { + logd(eventTime, "mediaPeriodReleased"); + } + + @Override + public void onLoadStarted( + EventTime eventTime, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) { + // Do nothing. + } + + @Override + public void onLoadError( + EventTime eventTime, + LoadEventInfo loadEventInfo, + MediaLoadData mediaLoadData, + IOException error, + boolean wasCanceled) { + printInternalError(eventTime, "loadError", error); + } + + @Override + public void onLoadCanceled( + EventTime eventTime, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) { + // Do nothing. + } + + @Override + public void onLoadCompleted( + EventTime eventTime, LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) { + // Do nothing. + } + + @Override + public void onReadingStarted(EventTime eventTime) { + logd(eventTime, "mediaPeriodReadingStarted"); + } + + @Override + public void onBandwidthEstimate( + EventTime eventTime, int totalLoadTimeMs, long totalBytesLoaded, long bitrateEstimate) { + // Do nothing. + } + + @Override + public void onSurfaceSizeChanged(EventTime eventTime, int width, int height) { + logd(eventTime, "surfaceSize", width + ", " + height); + } + + @Override + public void onUpstreamDiscarded(EventTime eventTime, MediaLoadData mediaLoadData) { + logd(eventTime, "upstreamDiscarded", Format.toLogString(mediaLoadData.trackFormat)); + } + + @Override + public void onDownstreamFormatChanged(EventTime eventTime, MediaLoadData mediaLoadData) { + logd(eventTime, "downstreamFormat", Format.toLogString(mediaLoadData.trackFormat)); + } + + @Override + public void onDrmSessionAcquired(EventTime eventTime) { + logd(eventTime, "drmSessionAcquired"); + } + + @Override + public void onDrmSessionManagerError(EventTime eventTime, Exception e) { + printInternalError(eventTime, "drmSessionManagerError", e); + } + + @Override + public void onDrmKeysRestored(EventTime eventTime) { + logd(eventTime, "drmKeysRestored"); + } + + @Override + public void onDrmKeysRemoved(EventTime eventTime) { + logd(eventTime, "drmKeysRemoved"); + } + + @Override + public void onDrmKeysLoaded(EventTime eventTime) { + logd(eventTime, "drmKeysLoaded"); + } + + @Override + public void onDrmSessionReleased(EventTime eventTime) { + logd(eventTime, "drmSessionReleased"); + } + + /** + * Logs a debug message. + * + * @param msg The message to log. + */ + protected void logd(String msg) { + Log.d(tag, msg); + } + + /** + * Logs an error message. + * + * @param msg The message to log. + */ + protected void loge(String msg) { + Log.e(tag, msg); + } + + // Internal methods + + private void logd(EventTime eventTime, String eventName) { + logd(getEventString(eventTime, eventName, /* eventDescription= */ null, /* throwable= */ null)); + } + + private void logd(EventTime eventTime, String eventName, String eventDescription) { + logd(getEventString(eventTime, eventName, eventDescription, /* throwable= */ null)); + } + + private void loge(EventTime eventTime, String eventName, @Nullable Throwable throwable) { + loge(getEventString(eventTime, eventName, /* eventDescription= */ null, throwable)); + } + + private void loge( + EventTime eventTime, + String eventName, + String eventDescription, + @Nullable Throwable throwable) { + loge(getEventString(eventTime, eventName, eventDescription, throwable)); + } + + private void printInternalError(EventTime eventTime, String type, Exception e) { + loge(eventTime, "internalError", type, e); + } + + private void printMetadata(Metadata metadata, String prefix) { + for (int i = 0; i < metadata.length(); i++) { + logd(prefix + metadata.get(i)); + } + } + + private String getEventString( + EventTime eventTime, + String eventName, + @Nullable String eventDescription, + @Nullable Throwable throwable) { + String eventString = eventName + " [" + getEventTimeString(eventTime); + if (eventDescription != null) { + eventString += ", " + eventDescription; + } + @Nullable String throwableString = Log.getThrowableString(throwable); + if (!TextUtils.isEmpty(throwableString)) { + eventString += "\n " + throwableString.replace("\n", "\n ") + '\n'; + } + eventString += "]"; + return eventString; + } + + private String getEventTimeString(EventTime eventTime) { + String windowPeriodString = "window=" + eventTime.windowIndex; + if (eventTime.mediaPeriodId != null) { + windowPeriodString += + ", period=" + eventTime.timeline.getIndexOfPeriod(eventTime.mediaPeriodId.periodUid); + if (eventTime.mediaPeriodId.isAd()) { + windowPeriodString += ", adGroup=" + eventTime.mediaPeriodId.adGroupIndex; + windowPeriodString += ", ad=" + eventTime.mediaPeriodId.adIndexInAdGroup; + } + } + return "eventTime=" + + getTimeString(eventTime.realtimeMs - startTimeMs) + + ", mediaPos=" + + getTimeString(eventTime.currentPlaybackPositionMs) + + ", " + + windowPeriodString; + } + + private static String getTimeString(long timeMs) { + return timeMs == C.TIME_UNSET ? "?" : TIME_FORMAT.format((timeMs) / 1000f); + } + + private static String getStateString(int state) { + switch (state) { + case Player.STATE_BUFFERING: + return "BUFFERING"; + case Player.STATE_ENDED: + return "ENDED"; + case Player.STATE_IDLE: + return "IDLE"; + case Player.STATE_READY: + return "READY"; + default: + return "?"; + } + } + + private static String getAdaptiveSupportString( + int trackCount, @AdaptiveSupport int adaptiveSupport) { + if (trackCount < 2) { + return "N/A"; + } + switch (adaptiveSupport) { + case RendererCapabilities.ADAPTIVE_SEAMLESS: + return "YES"; + case RendererCapabilities.ADAPTIVE_NOT_SEAMLESS: + return "YES_NOT_SEAMLESS"; + case RendererCapabilities.ADAPTIVE_NOT_SUPPORTED: + return "NO"; + default: + throw new IllegalStateException(); + } + } + + // Suppressing reference equality warning because the track group stored in the track selection + // must point to the exact track group object to be considered part of it. + @SuppressWarnings("ReferenceEquality") + private static String getTrackStatusString( + @Nullable TrackSelection selection, TrackGroup group, int trackIndex) { + return getTrackStatusString(selection != null && selection.getTrackGroup() == group + && selection.indexOf(trackIndex) != C.INDEX_UNSET); + } + + private static String getTrackStatusString(boolean enabled) { + return enabled ? "[X]" : "[ ]"; + } + + private static String getRepeatModeString(@Player.RepeatMode int repeatMode) { + switch (repeatMode) { + case Player.REPEAT_MODE_OFF: + return "OFF"; + case Player.REPEAT_MODE_ONE: + return "ONE"; + case Player.REPEAT_MODE_ALL: + return "ALL"; + default: + return "?"; + } + } + + private static String getDiscontinuityReasonString(@Player.DiscontinuityReason int reason) { + switch (reason) { + case Player.DISCONTINUITY_REASON_PERIOD_TRANSITION: + return "PERIOD_TRANSITION"; + case Player.DISCONTINUITY_REASON_SEEK: + return "SEEK"; + case Player.DISCONTINUITY_REASON_SEEK_ADJUSTMENT: + return "SEEK_ADJUSTMENT"; + case Player.DISCONTINUITY_REASON_AD_INSERTION: + return "AD_INSERTION"; + case Player.DISCONTINUITY_REASON_INTERNAL: + return "INTERNAL"; + default: + return "?"; + } + } + + private static String getTimelineChangeReasonString(@Player.TimelineChangeReason int reason) { + switch (reason) { + case Player.TIMELINE_CHANGE_REASON_PREPARED: + return "PREPARED"; + case Player.TIMELINE_CHANGE_REASON_RESET: + return "RESET"; + case Player.TIMELINE_CHANGE_REASON_DYNAMIC: + return "DYNAMIC"; + default: + return "?"; + } + } + + private static String getPlaybackSuppressionReasonString( + @PlaybackSuppressionReason int playbackSuppressionReason) { + switch (playbackSuppressionReason) { + case Player.PLAYBACK_SUPPRESSION_REASON_NONE: + return "NONE"; + case Player.PLAYBACK_SUPPRESSION_REASON_TRANSIENT_AUDIO_FOCUS_LOSS: + return "TRANSIENT_AUDIO_FOCUS_LOSS"; + default: + return "?"; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/FlacConstants.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/FlacConstants.java new file mode 100644 index 0000000000..faa917fab8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/FlacConstants.java @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +/** Defines constants used by the FLAC extractor. */ +public final class FlacConstants { + + /** Size of the FLAC stream marker in bytes. */ + public static final int STREAM_MARKER_SIZE = 4; + /** Size of the header of a FLAC metadata block in bytes. */ + public static final int METADATA_BLOCK_HEADER_SIZE = 4; + /** Size of the FLAC stream info block (header included) in bytes. */ + public static final int STREAM_INFO_BLOCK_SIZE = 38; + /** Minimum size of a FLAC frame header in bytes. */ + public static final int MIN_FRAME_HEADER_SIZE = 6; + /** Maximum size of a FLAC frame header in bytes. */ + public static final int MAX_FRAME_HEADER_SIZE = 16; + + /** Stream info metadata block type. */ + public static final int METADATA_TYPE_STREAM_INFO = 0; + /** Seek table metadata block type. */ + public static final int METADATA_TYPE_SEEK_TABLE = 3; + /** Vorbis comment metadata block type. */ + public static final int METADATA_TYPE_VORBIS_COMMENT = 4; + /** Picture metadata block type. */ + public static final int METADATA_TYPE_PICTURE = 6; + + private FlacConstants() {} +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/FlacStreamMetadata.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/FlacStreamMetadata.java new file mode 100644 index 0000000000..893481d8da --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/FlacStreamMetadata.java @@ -0,0 +1,384 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.Metadata; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.flac.PictureFrame; +import org.mozilla.thirdparty.com.google.android.exoplayer2.metadata.flac.VorbisComment; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +/** + * Holder for FLAC metadata. + * + * @see FLAC format + * METADATA_BLOCK_STREAMINFO + * @see FLAC format + * METADATA_BLOCK_SEEKTABLE + * @see FLAC format + * METADATA_BLOCK_VORBIS_COMMENT + * @see FLAC format + * METADATA_BLOCK_PICTURE + */ +public final class FlacStreamMetadata { + + /** A FLAC seek table. */ + public static class SeekTable { + /** Seek points sample numbers. */ + public final long[] pointSampleNumbers; + /** Seek points byte offsets from the first frame. */ + public final long[] pointOffsets; + + public SeekTable(long[] pointSampleNumbers, long[] pointOffsets) { + this.pointSampleNumbers = pointSampleNumbers; + this.pointOffsets = pointOffsets; + } + } + + private static final String TAG = "FlacStreamMetadata"; + + /** Indicates that a value is not in the corresponding lookup table. */ + public static final int NOT_IN_LOOKUP_TABLE = -1; + /** Separator between the field name of a Vorbis comment and the corresponding value. */ + private static final String SEPARATOR = "="; + + /** Minimum number of samples per block. */ + public final int minBlockSizeSamples; + /** Maximum number of samples per block. */ + public final int maxBlockSizeSamples; + /** Minimum frame size in bytes, or 0 if the value is unknown. */ + public final int minFrameSize; + /** Maximum frame size in bytes, or 0 if the value is unknown. */ + public final int maxFrameSize; + /** Sample rate in Hertz. */ + public final int sampleRate; + /** + * Lookup key corresponding to the stream sample rate, or {@link #NOT_IN_LOOKUP_TABLE} if it is + * not in the lookup table. + * + *

This key is used to indicate the sample rate in the frame header for the most common values. + * + *

The sample rate lookup table is described in https://xiph.org/flac/format.html#frame_header. + */ + public final int sampleRateLookupKey; + /** Number of audio channels. */ + public final int channels; + /** Number of bits per sample. */ + public final int bitsPerSample; + /** + * Lookup key corresponding to the number of bits per sample of the stream, or {@link + * #NOT_IN_LOOKUP_TABLE} if it is not in the lookup table. + * + *

This key is used to indicate the number of bits per sample in the frame header for the most + * common values. + * + *

The sample size lookup table is described in https://xiph.org/flac/format.html#frame_header. + */ + public final int bitsPerSampleLookupKey; + /** Total number of samples, or 0 if the value is unknown. */ + public final long totalSamples; + /** Seek table, or {@code null} if it is not provided. */ + @Nullable public final SeekTable seekTable; + /** Content metadata, or {@code null} if it is not provided. */ + @Nullable private final Metadata metadata; + + /** + * Parses binary FLAC stream info metadata. + * + * @param data An array containing binary FLAC stream info block. + * @param offset The offset of the stream info block in {@code data}, excluding the header (i.e. + * the offset points to the first byte of the minimum block size). + */ + public FlacStreamMetadata(byte[] data, int offset) { + ParsableBitArray scratch = new ParsableBitArray(data); + scratch.setPosition(offset * 8); + minBlockSizeSamples = scratch.readBits(16); + maxBlockSizeSamples = scratch.readBits(16); + minFrameSize = scratch.readBits(24); + maxFrameSize = scratch.readBits(24); + sampleRate = scratch.readBits(20); + sampleRateLookupKey = getSampleRateLookupKey(sampleRate); + channels = scratch.readBits(3) + 1; + bitsPerSample = scratch.readBits(5) + 1; + bitsPerSampleLookupKey = getBitsPerSampleLookupKey(bitsPerSample); + totalSamples = scratch.readBitsToLong(36); + seekTable = null; + metadata = null; + } + + // Used in native code. + public FlacStreamMetadata( + int minBlockSizeSamples, + int maxBlockSizeSamples, + int minFrameSize, + int maxFrameSize, + int sampleRate, + int channels, + int bitsPerSample, + long totalSamples, + ArrayList vorbisComments, + ArrayList pictureFrames) { + this( + minBlockSizeSamples, + maxBlockSizeSamples, + minFrameSize, + maxFrameSize, + sampleRate, + channels, + bitsPerSample, + totalSamples, + /* seekTable= */ null, + buildMetadata(vorbisComments, pictureFrames)); + } + + private FlacStreamMetadata( + int minBlockSizeSamples, + int maxBlockSizeSamples, + int minFrameSize, + int maxFrameSize, + int sampleRate, + int channels, + int bitsPerSample, + long totalSamples, + @Nullable SeekTable seekTable, + @Nullable Metadata metadata) { + this.minBlockSizeSamples = minBlockSizeSamples; + this.maxBlockSizeSamples = maxBlockSizeSamples; + this.minFrameSize = minFrameSize; + this.maxFrameSize = maxFrameSize; + this.sampleRate = sampleRate; + this.sampleRateLookupKey = getSampleRateLookupKey(sampleRate); + this.channels = channels; + this.bitsPerSample = bitsPerSample; + this.bitsPerSampleLookupKey = getBitsPerSampleLookupKey(bitsPerSample); + this.totalSamples = totalSamples; + this.seekTable = seekTable; + this.metadata = metadata; + } + + /** Returns the maximum size for a decoded frame from the FLAC stream. */ + public int getMaxDecodedFrameSize() { + return maxBlockSizeSamples * channels * (bitsPerSample / 8); + } + + /** Returns the bit-rate of the FLAC stream. */ + public int getBitRate() { + return bitsPerSample * sampleRate * channels; + } + + /** + * Returns the duration of the FLAC stream in microseconds, or {@link C#TIME_UNSET} if the total + * number of samples if unknown. + */ + public long getDurationUs() { + return totalSamples == 0 ? C.TIME_UNSET : totalSamples * C.MICROS_PER_SECOND / sampleRate; + } + + /** + * Returns the sample number of the sample at a given time. + * + * @param timeUs Time position in microseconds in the FLAC stream. + * @return The sample number corresponding to the time position. + */ + public long getSampleNumber(long timeUs) { + long sampleNumber = (timeUs * sampleRate) / C.MICROS_PER_SECOND; + return Util.constrainValue(sampleNumber, /* min= */ 0, totalSamples - 1); + } + + /** Returns the approximate number of bytes per frame for the current FLAC stream. */ + public long getApproxBytesPerFrame() { + long approxBytesPerFrame; + if (maxFrameSize > 0) { + approxBytesPerFrame = ((long) maxFrameSize + minFrameSize) / 2 + 1; + } else { + // Uses the stream's block-size if it's a known fixed block-size stream, otherwise uses the + // default value for FLAC block-size, which is 4096. + long blockSizeSamples = + (minBlockSizeSamples == maxBlockSizeSamples && minBlockSizeSamples > 0) + ? minBlockSizeSamples + : 4096; + approxBytesPerFrame = (blockSizeSamples * channels * bitsPerSample) / 8 + 64; + } + return approxBytesPerFrame; + } + + /** + * Returns a {@link Format} extracted from the FLAC stream metadata. + * + *

{@code streamMarkerAndInfoBlock} is updated to set the bit corresponding to the stream info + * last metadata block flag to true. + * + * @param streamMarkerAndInfoBlock An array containing the FLAC stream marker followed by the + * stream info block. + * @param id3Metadata The ID3 metadata of the stream, or {@code null} if there is no such data. + * @return The extracted {@link Format}. + */ + public Format getFormat(byte[] streamMarkerAndInfoBlock, @Nullable Metadata id3Metadata) { + // Set the last metadata block flag, ignore the other blocks. + streamMarkerAndInfoBlock[4] = (byte) 0x80; + int maxInputSize = maxFrameSize > 0 ? maxFrameSize : Format.NO_VALUE; + @Nullable Metadata metadataWithId3 = getMetadataCopyWithAppendedEntriesFrom(id3Metadata); + + return Format.createAudioSampleFormat( + /* id= */ null, + MimeTypes.AUDIO_FLAC, + /* codecs= */ null, + getBitRate(), + maxInputSize, + channels, + sampleRate, + /* pcmEncoding= */ Format.NO_VALUE, + /* encoderDelay= */ 0, + /* encoderPadding= */ 0, + /* initializationData= */ Collections.singletonList(streamMarkerAndInfoBlock), + /* drmInitData= */ null, + /* selectionFlags= */ 0, + /* language= */ null, + metadataWithId3); + } + + /** Returns a copy of the content metadata with entries from {@code other} appended. */ + @Nullable + public Metadata getMetadataCopyWithAppendedEntriesFrom(@Nullable Metadata other) { + return metadata == null ? other : metadata.copyWithAppendedEntriesFrom(other); + } + + /** Returns a copy of {@code this} with the seek table replaced by the one given. */ + public FlacStreamMetadata copyWithSeekTable(@Nullable SeekTable seekTable) { + return new FlacStreamMetadata( + minBlockSizeSamples, + maxBlockSizeSamples, + minFrameSize, + maxFrameSize, + sampleRate, + channels, + bitsPerSample, + totalSamples, + seekTable, + metadata); + } + + /** Returns a copy of {@code this} with the given Vorbis comments added to the metadata. */ + public FlacStreamMetadata copyWithVorbisComments(List vorbisComments) { + @Nullable + Metadata appendedMetadata = + getMetadataCopyWithAppendedEntriesFrom( + buildMetadata(vorbisComments, Collections.emptyList())); + return new FlacStreamMetadata( + minBlockSizeSamples, + maxBlockSizeSamples, + minFrameSize, + maxFrameSize, + sampleRate, + channels, + bitsPerSample, + totalSamples, + seekTable, + appendedMetadata); + } + + /** Returns a copy of {@code this} with the given picture frames added to the metadata. */ + public FlacStreamMetadata copyWithPictureFrames(List pictureFrames) { + @Nullable + Metadata appendedMetadata = + getMetadataCopyWithAppendedEntriesFrom( + buildMetadata(Collections.emptyList(), pictureFrames)); + return new FlacStreamMetadata( + minBlockSizeSamples, + maxBlockSizeSamples, + minFrameSize, + maxFrameSize, + sampleRate, + channels, + bitsPerSample, + totalSamples, + seekTable, + appendedMetadata); + } + + private static int getSampleRateLookupKey(int sampleRate) { + switch (sampleRate) { + case 88200: + return 1; + case 176400: + return 2; + case 192000: + return 3; + case 8000: + return 4; + case 16000: + return 5; + case 22050: + return 6; + case 24000: + return 7; + case 32000: + return 8; + case 44100: + return 9; + case 48000: + return 10; + case 96000: + return 11; + default: + return NOT_IN_LOOKUP_TABLE; + } + } + + private static int getBitsPerSampleLookupKey(int bitsPerSample) { + switch (bitsPerSample) { + case 8: + return 1; + case 12: + return 2; + case 16: + return 4; + case 20: + return 5; + case 24: + return 6; + default: + return NOT_IN_LOOKUP_TABLE; + } + } + + @Nullable + private static Metadata buildMetadata( + List vorbisComments, List pictureFrames) { + if (vorbisComments.isEmpty() && pictureFrames.isEmpty()) { + return null; + } + + ArrayList metadataEntries = new ArrayList<>(); + for (int i = 0; i < vorbisComments.size(); i++) { + String vorbisComment = vorbisComments.get(i); + String[] keyAndValue = Util.splitAtFirst(vorbisComment, SEPARATOR); + if (keyAndValue.length != 2) { + Log.w(TAG, "Failed to parse Vorbis comment: " + vorbisComment); + } else { + VorbisComment entry = new VorbisComment(keyAndValue[0], keyAndValue[1]); + metadataEntries.add(entry); + } + } + metadataEntries.addAll(pictureFrames); + + return metadataEntries.isEmpty() ? null : new Metadata(metadataEntries); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/GlUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/GlUtil.java new file mode 100644 index 0000000000..a34cee48f9 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/GlUtil.java @@ -0,0 +1,404 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import static android.opengl.GLU.gluErrorString; + +import android.annotation.TargetApi; +import android.content.Context; +import android.content.pm.PackageManager; +import android.opengl.EGL14; +import android.opengl.EGLDisplay; +import android.opengl.GLES11Ext; +import android.opengl.GLES20; +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayerLibraryInfo; +import java.nio.Buffer; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.FloatBuffer; +import java.nio.IntBuffer; +import javax.microedition.khronos.egl.EGL10; + +/** GL utilities. */ +public final class GlUtil { + + /** + * GL attribute, which can be attached to a buffer with {@link Attribute#setBuffer(float[], int)}. + */ + public static final class Attribute { + + /** The name of the attribute in the GLSL sources. */ + public final String name; + + private final int index; + private final int location; + + @Nullable private Buffer buffer; + private int size; + + /** + * Creates a new GL attribute. + * + * @param program The identifier of a compiled and linked GLSL shader program. + * @param index The index of the attribute. After this instance has been constructed, the name + * of the attribute is available via the {@link #name} field. + */ + public Attribute(int program, int index) { + int[] len = new int[1]; + GLES20.glGetProgramiv(program, GLES20.GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, len, 0); + + int[] type = new int[1]; + int[] size = new int[1]; + byte[] nameBytes = new byte[len[0]]; + int[] ignore = new int[1]; + + GLES20.glGetActiveAttrib(program, index, len[0], ignore, 0, size, 0, type, 0, nameBytes, 0); + name = new String(nameBytes, 0, strlen(nameBytes)); + location = GLES20.glGetAttribLocation(program, name); + this.index = index; + } + + /** + * Configures {@link #bind()} to attach vertices in {@code buffer} (each of size {@code size} + * elements) to this {@link Attribute}. + * + * @param buffer Buffer to bind to this attribute. + * @param size Number of elements per vertex. + */ + public void setBuffer(float[] buffer, int size) { + this.buffer = createBuffer(buffer); + this.size = size; + } + + /** + * Sets the vertex attribute to whatever was attached via {@link #setBuffer(float[], int)}. + * + *

Should be called before each drawing call. + */ + public void bind() { + Buffer buffer = Assertions.checkNotNull(this.buffer, "call setBuffer before bind"); + GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0); + GLES20.glVertexAttribPointer( + location, + size, // count + GLES20.GL_FLOAT, // type + false, // normalize + 0, // stride + buffer); + GLES20.glEnableVertexAttribArray(index); + checkGlError(); + } + } + + /** + * GL uniform, which can be attached to a sampler using {@link Uniform#setSamplerTexId(int, int)}. + */ + public static final class Uniform { + + /** The name of the uniform in the GLSL sources. */ + public final String name; + + private final int location; + private final int type; + private final float[] value; + + private int texId; + private int unit; + + /** + * Creates a new GL uniform. + * + * @param program The identifier of a compiled and linked GLSL shader program. + * @param index The index of the uniform. After this instance has been constructed, the name of + * the uniform is available via the {@link #name} field. + */ + public Uniform(int program, int index) { + int[] len = new int[1]; + GLES20.glGetProgramiv(program, GLES20.GL_ACTIVE_UNIFORM_MAX_LENGTH, len, 0); + + int[] type = new int[1]; + int[] size = new int[1]; + byte[] name = new byte[len[0]]; + int[] ignore = new int[1]; + + GLES20.glGetActiveUniform(program, index, len[0], ignore, 0, size, 0, type, 0, name, 0); + this.name = new String(name, 0, strlen(name)); + location = GLES20.glGetUniformLocation(program, this.name); + this.type = type[0]; + + value = new float[1]; + } + + /** + * Configures {@link #bind()} to use the specified {@code texId} for this sampler uniform. + * + * @param texId The GL texture identifier from which to sample. + * @param unit The GL texture unit index. + */ + public void setSamplerTexId(int texId, int unit) { + this.texId = texId; + this.unit = unit; + } + + /** Configures {@link #bind()} to use the specified float {@code value} for this uniform. */ + public void setFloat(float value) { + this.value[0] = value; + } + + /** + * Sets the uniform to whatever value was passed via {@link #setSamplerTexId(int, int)} or + * {@link #setFloat(float)}. + * + *

Should be called before each drawing call. + */ + public void bind() { + if (type == GLES20.GL_FLOAT) { + GLES20.glUniform1fv(location, 1, value, 0); + checkGlError(); + return; + } + + if (texId == 0) { + throw new IllegalStateException("call setSamplerTexId before bind"); + } + GLES20.glActiveTexture(GLES20.GL_TEXTURE0 + unit); + if (type == GLES11Ext.GL_SAMPLER_EXTERNAL_OES) { + GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, texId); + } else if (type == GLES20.GL_SAMPLER_2D) { + GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texId); + } else { + throw new IllegalStateException("unexpected uniform type: " + type); + } + GLES20.glUniform1i(location, unit); + GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR); + GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR); + GLES20.glTexParameteri( + GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE); + GLES20.glTexParameteri( + GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE); + checkGlError(); + } + } + + private static final String TAG = "GlUtil"; + + private static final String EXTENSION_PROTECTED_CONTENT = "EGL_EXT_protected_content"; + private static final String EXTENSION_SURFACELESS_CONTEXT = "EGL_KHR_surfaceless_context"; + + /** Class only contains static methods. */ + private GlUtil() {} + + /** + * Returns whether creating a GL context with {@value EXTENSION_PROTECTED_CONTENT} is possible. If + * {@code true}, the device supports a protected output path for DRM content when using GL. + */ + @TargetApi(24) + public static boolean isProtectedContentExtensionSupported(Context context) { + if (Util.SDK_INT < 24) { + return false; + } + if (Util.SDK_INT < 26 && ("samsung".equals(Util.MANUFACTURER) || "XT1650".equals(Util.MODEL))) { + // Samsung devices running Nougat are known to be broken. See + // https://github.com/google/ExoPlayer/issues/3373 and [Internal: b/37197802]. + // Moto Z XT1650 is also affected. See + // https://github.com/google/ExoPlayer/issues/3215. + return false; + } + if (Util.SDK_INT < 26 + && !context + .getPackageManager() + .hasSystemFeature(PackageManager.FEATURE_VR_MODE_HIGH_PERFORMANCE)) { + // Pre API level 26 devices were not well tested unless they supported VR mode. + return false; + } + + EGLDisplay display = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY); + @Nullable String eglExtensions = EGL14.eglQueryString(display, EGL10.EGL_EXTENSIONS); + return eglExtensions != null && eglExtensions.contains(EXTENSION_PROTECTED_CONTENT); + } + + /** + * Returns whether creating a GL context with {@value EXTENSION_SURFACELESS_CONTEXT} is possible. + */ + @TargetApi(17) + public static boolean isSurfacelessContextExtensionSupported() { + if (Util.SDK_INT < 17) { + return false; + } + EGLDisplay display = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY); + @Nullable String eglExtensions = EGL14.eglQueryString(display, EGL10.EGL_EXTENSIONS); + return eglExtensions != null && eglExtensions.contains(EXTENSION_SURFACELESS_CONTEXT); + } + + /** + * If there is an OpenGl error, logs the error and if {@link + * ExoPlayerLibraryInfo#GL_ASSERTIONS_ENABLED} is true throws a {@link RuntimeException}. + */ + public static void checkGlError() { + int lastError = GLES20.GL_NO_ERROR; + int error; + while ((error = GLES20.glGetError()) != GLES20.GL_NO_ERROR) { + Log.e(TAG, "glError " + gluErrorString(error)); + lastError = error; + } + if (ExoPlayerLibraryInfo.GL_ASSERTIONS_ENABLED && lastError != GLES20.GL_NO_ERROR) { + throw new RuntimeException("glError " + gluErrorString(lastError)); + } + } + + /** + * Builds a GL shader program from vertex and fragment shader code. + * + * @param vertexCode GLES20 vertex shader program as arrays of strings. Strings are joined by + * adding a new line character in between each of them. + * @param fragmentCode GLES20 fragment shader program as arrays of strings. Strings are joined by + * adding a new line character in between each of them. + * @return GLES20 program id. + */ + public static int compileProgram(String[] vertexCode, String[] fragmentCode) { + return compileProgram(TextUtils.join("\n", vertexCode), TextUtils.join("\n", fragmentCode)); + } + + /** + * Builds a GL shader program from vertex and fragment shader code. + * + * @param vertexCode GLES20 vertex shader program. + * @param fragmentCode GLES20 fragment shader program. + * @return GLES20 program id. + */ + public static int compileProgram(String vertexCode, String fragmentCode) { + int program = GLES20.glCreateProgram(); + checkGlError(); + + // Add the vertex and fragment shaders. + addShader(GLES20.GL_VERTEX_SHADER, vertexCode, program); + addShader(GLES20.GL_FRAGMENT_SHADER, fragmentCode, program); + + // Link and check for errors. + GLES20.glLinkProgram(program); + int[] linkStatus = new int[] {GLES20.GL_FALSE}; + GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, linkStatus, 0); + if (linkStatus[0] != GLES20.GL_TRUE) { + throwGlError("Unable to link shader program: \n" + GLES20.glGetProgramInfoLog(program)); + } + checkGlError(); + + return program; + } + + /** Returns the {@link Attribute}s in the specified {@code program}. */ + public static Attribute[] getAttributes(int program) { + int[] attributeCount = new int[1]; + GLES20.glGetProgramiv(program, GLES20.GL_ACTIVE_ATTRIBUTES, attributeCount, 0); + if (attributeCount[0] != 2) { + throw new IllegalStateException("expected two attributes"); + } + + Attribute[] attributes = new Attribute[attributeCount[0]]; + for (int i = 0; i < attributeCount[0]; i++) { + attributes[i] = new Attribute(program, i); + } + return attributes; + } + + /** Returns the {@link Uniform}s in the specified {@code program}. */ + public static Uniform[] getUniforms(int program) { + int[] uniformCount = new int[1]; + GLES20.glGetProgramiv(program, GLES20.GL_ACTIVE_UNIFORMS, uniformCount, 0); + + Uniform[] uniforms = new Uniform[uniformCount[0]]; + for (int i = 0; i < uniformCount[0]; i++) { + uniforms[i] = new Uniform(program, i); + } + + return uniforms; + } + + /** + * Allocates a FloatBuffer with the given data. + * + * @param data Used to initialize the new buffer. + */ + public static FloatBuffer createBuffer(float[] data) { + return (FloatBuffer) createBuffer(data.length).put(data).flip(); + } + + /** + * Allocates a FloatBuffer. + * + * @param capacity The new buffer's capacity, in floats. + */ + public static FloatBuffer createBuffer(int capacity) { + ByteBuffer byteBuffer = ByteBuffer.allocateDirect(capacity * C.BYTES_PER_FLOAT); + return byteBuffer.order(ByteOrder.nativeOrder()).asFloatBuffer(); + } + + /** + * Creates a GL_TEXTURE_EXTERNAL_OES with default configuration of GL_LINEAR filtering and + * GL_CLAMP_TO_EDGE wrapping. + */ + public static int createExternalTexture() { + int[] texId = new int[1]; + GLES20.glGenTextures(1, IntBuffer.wrap(texId)); + GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, texId[0]); + GLES20.glTexParameteri( + GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR); + GLES20.glTexParameteri( + GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR); + GLES20.glTexParameteri( + GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE); + GLES20.glTexParameteri( + GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE); + checkGlError(); + return texId[0]; + } + + private static void addShader(int type, String source, int program) { + int shader = GLES20.glCreateShader(type); + GLES20.glShaderSource(shader, source); + GLES20.glCompileShader(shader); + + int[] result = new int[] {GLES20.GL_FALSE}; + GLES20.glGetShaderiv(shader, GLES20.GL_COMPILE_STATUS, result, 0); + if (result[0] != GLES20.GL_TRUE) { + throwGlError(GLES20.glGetShaderInfoLog(shader) + ", source: " + source); + } + + GLES20.glAttachShader(program, shader); + GLES20.glDeleteShader(shader); + checkGlError(); + } + + private static void throwGlError(String errorMsg) { + Log.e(TAG, errorMsg); + if (ExoPlayerLibraryInfo.GL_ASSERTIONS_ENABLED) { + throw new RuntimeException(errorMsg); + } + } + + /** Returns the length of the null-terminated string in {@code strVal}. */ + private static int strlen(byte[] strVal) { + for (int i = 0; i < strVal.length; ++i) { + if (strVal[i] == '\0') { + return i; + } + } + return strVal.length; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/HandlerWrapper.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/HandlerWrapper.java new file mode 100644 index 0000000000..2e412fa10f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/HandlerWrapper.java @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.os.Handler; +import android.os.Looper; +import android.os.Message; +import androidx.annotation.Nullable; + +/** + * An interface to call through to a {@link Handler}. Instances must be created by calling {@link + * Clock#createHandler(Looper, Handler.Callback)} on {@link Clock#DEFAULT} for all non-test cases. + */ +public interface HandlerWrapper { + + /** @see Handler#getLooper() */ + Looper getLooper(); + + /** @see Handler#obtainMessage(int) */ + Message obtainMessage(int what); + + /** @see Handler#obtainMessage(int, Object) */ + Message obtainMessage(int what, @Nullable Object obj); + + /** @see Handler#obtainMessage(int, int, int) */ + Message obtainMessage(int what, int arg1, int arg2); + + /** @see Handler#obtainMessage(int, int, int, Object) */ + Message obtainMessage(int what, int arg1, int arg2, @Nullable Object obj); + + /** @see Handler#sendEmptyMessage(int) */ + boolean sendEmptyMessage(int what); + + /** @see Handler#sendEmptyMessageAtTime(int, long) */ + boolean sendEmptyMessageAtTime(int what, long uptimeMs); + + /** @see Handler#removeMessages(int) */ + void removeMessages(int what); + + /** @see Handler#removeCallbacksAndMessages(Object) */ + void removeCallbacksAndMessages(@Nullable Object token); + + /** @see Handler#post(Runnable) */ + boolean post(Runnable runnable); + + /** @see Handler#postDelayed(Runnable, long) */ + boolean postDelayed(Runnable runnable, long delayMs); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LibraryLoader.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LibraryLoader.java new file mode 100644 index 0000000000..31e582aac5 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LibraryLoader.java @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import java.util.Arrays; + +/** + * Configurable loader for native libraries. + */ +public final class LibraryLoader { + + private static final String TAG = "LibraryLoader"; + + private String[] nativeLibraries; + private boolean loadAttempted; + private boolean isAvailable; + + /** + * @param libraries The names of the libraries to load. + */ + public LibraryLoader(String... libraries) { + nativeLibraries = libraries; + } + + /** + * Overrides the names of the libraries to load. Must be called before any call to + * {@link #isAvailable()}. + */ + public synchronized void setLibraries(String... libraries) { + Assertions.checkState(!loadAttempted, "Cannot set libraries after loading"); + nativeLibraries = libraries; + } + + /** + * Returns whether the underlying libraries are available, loading them if necessary. + */ + public synchronized boolean isAvailable() { + if (loadAttempted) { + return isAvailable; + } + loadAttempted = true; + try { + for (String lib : nativeLibraries) { + System.loadLibrary(lib); + } + isAvailable = true; + } catch (UnsatisfiedLinkError exception) { + // Log a warning as an attempt to check for the library indicates that the app depends on an + // extension and generally would expect its native libraries to be available. + Log.w(TAG, "Failed to load " + Arrays.toString(nativeLibraries)); + } + return isAvailable; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Log.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Log.java new file mode 100644 index 0000000000..b6e4a25935 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Log.java @@ -0,0 +1,177 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.text.TextUtils; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.net.UnknownHostException; + +/** Wrapper around {@link android.util.Log} which allows to set the log level. */ +public final class Log { + + /** + * Log level for ExoPlayer logcat logging. One of {@link #LOG_LEVEL_ALL}, {@link #LOG_LEVEL_INFO}, + * {@link #LOG_LEVEL_WARNING}, {@link #LOG_LEVEL_ERROR} or {@link #LOG_LEVEL_OFF}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({LOG_LEVEL_ALL, LOG_LEVEL_INFO, LOG_LEVEL_WARNING, LOG_LEVEL_ERROR, LOG_LEVEL_OFF}) + @interface LogLevel {} + /** Log level to log all messages. */ + public static final int LOG_LEVEL_ALL = 0; + /** Log level to only log informative, warning and error messages. */ + public static final int LOG_LEVEL_INFO = 1; + /** Log level to only log warning and error messages. */ + public static final int LOG_LEVEL_WARNING = 2; + /** Log level to only log error messages. */ + public static final int LOG_LEVEL_ERROR = 3; + /** Log level to disable all logging. */ + public static final int LOG_LEVEL_OFF = Integer.MAX_VALUE; + + private static int logLevel = LOG_LEVEL_ALL; + private static boolean logStackTraces = true; + + private Log() {} + + /** Returns current {@link LogLevel} for ExoPlayer logcat logging. */ + public static @LogLevel int getLogLevel() { + return logLevel; + } + + /** Returns whether stack traces of {@link Throwable}s will be logged to logcat. */ + public boolean getLogStackTraces() { + return logStackTraces; + } + + /** + * Sets the {@link LogLevel} for ExoPlayer logcat logging. + * + * @param logLevel The new {@link LogLevel}. + */ + public static void setLogLevel(@LogLevel int logLevel) { + Log.logLevel = logLevel; + } + + /** + * Sets whether stack traces of {@link Throwable}s will be logged to logcat. Stack trace logging + * is enabled by default. + * + * @param logStackTraces Whether stack traces will be logged. + */ + public static void setLogStackTraces(boolean logStackTraces) { + Log.logStackTraces = logStackTraces; + } + + /** @see android.util.Log#d(String, String) */ + public static void d(String tag, String message) { + if (logLevel == LOG_LEVEL_ALL) { + android.util.Log.d(tag, message); + } + } + + /** @see android.util.Log#d(String, String, Throwable) */ + public static void d(String tag, String message, @Nullable Throwable throwable) { + d(tag, appendThrowableString(message, throwable)); + } + + /** @see android.util.Log#i(String, String) */ + public static void i(String tag, String message) { + if (logLevel <= LOG_LEVEL_INFO) { + android.util.Log.i(tag, message); + } + } + + /** @see android.util.Log#i(String, String, Throwable) */ + public static void i(String tag, String message, @Nullable Throwable throwable) { + i(tag, appendThrowableString(message, throwable)); + } + + /** @see android.util.Log#w(String, String) */ + public static void w(String tag, String message) { + if (logLevel <= LOG_LEVEL_WARNING) { + android.util.Log.w(tag, message); + } + } + + /** @see android.util.Log#w(String, String, Throwable) */ + public static void w(String tag, String message, @Nullable Throwable throwable) { + w(tag, appendThrowableString(message, throwable)); + } + + /** @see android.util.Log#e(String, String) */ + public static void e(String tag, String message) { + if (logLevel <= LOG_LEVEL_ERROR) { + android.util.Log.e(tag, message); + } + } + + /** @see android.util.Log#e(String, String, Throwable) */ + public static void e(String tag, String message, @Nullable Throwable throwable) { + e(tag, appendThrowableString(message, throwable)); + } + + /** + * Returns a string representation of a {@link Throwable} suitable for logging, taking into + * account whether {@link #setLogStackTraces(boolean)} stack trace logging} is enabled. + * + *

Stack trace logging may be unconditionally suppressed for some expected failure modes (e.g., + * {@link Throwable Throwables} that are expected if the device doesn't have network connectivity) + * to avoid log spam. + * + * @param throwable The {@link Throwable}. + * @return The string representation of the {@link Throwable}. + */ + @Nullable + public static String getThrowableString(@Nullable Throwable throwable) { + if (throwable == null) { + return null; + } else if (isCausedByUnknownHostException(throwable)) { + // UnknownHostException implies the device doesn't have network connectivity. + // UnknownHostException.getMessage() may return a string that's more verbose than desired for + // logging an expected failure mode. Conversely, android.util.Log.getStackTraceString has + // special handling to return the empty string, which can result in logging that doesn't + // indicate the failure mode at all. Hence we special case this exception to always return a + // concise but useful message. + return "UnknownHostException (no network)"; + } else if (!logStackTraces) { + return throwable.getMessage(); + } else { + return android.util.Log.getStackTraceString(throwable).trim().replace("\t", " "); + } + } + + private static String appendThrowableString(String message, @Nullable Throwable throwable) { + @Nullable String throwableString = getThrowableString(throwable); + if (!TextUtils.isEmpty(throwableString)) { + message += "\n " + throwableString.replace("\n", "\n ") + '\n'; + } + return message; + } + + private static boolean isCausedByUnknownHostException(@Nullable Throwable throwable) { + while (throwable != null) { + if (throwable instanceof UnknownHostException) { + return true; + } + throwable = throwable.getCause(); + } + return false; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LongArray.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LongArray.java new file mode 100644 index 0000000000..ef6f938ca8 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/LongArray.java @@ -0,0 +1,84 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import java.util.Arrays; + +/** + * An append-only, auto-growing {@code long[]}. + */ +public final class LongArray { + + private static final int DEFAULT_INITIAL_CAPACITY = 32; + + private int size; + private long[] values; + + public LongArray() { + this(DEFAULT_INITIAL_CAPACITY); + } + + /** + * @param initialCapacity The initial capacity of the array. + */ + public LongArray(int initialCapacity) { + values = new long[initialCapacity]; + } + + /** + * Appends a value. + * + * @param value The value to append. + */ + public void add(long value) { + if (size == values.length) { + values = Arrays.copyOf(values, size * 2); + } + values[size++] = value; + } + + /** + * Returns the value at a specified index. + * + * @param index The index. + * @return The corresponding value. + * @throws IndexOutOfBoundsException If the index is less than zero, or greater than or equal to + * {@link #size()}. + */ + public long get(int index) { + if (index < 0 || index >= size) { + throw new IndexOutOfBoundsException("Invalid index " + index + ", size is " + size); + } + return values[index]; + } + + /** + * Returns the current size of the array. + */ + public int size() { + return size; + } + + /** + * Copies the current values into a newly allocated primitive array. + * + * @return The primitive array containing the copied values. + */ + public long[] toArray() { + return Arrays.copyOf(values, size); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/MediaClock.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/MediaClock.java new file mode 100644 index 0000000000..029f3aa8f5 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/MediaClock.java @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; + +/** + * Tracks the progression of media time. + */ +public interface MediaClock { + + /** + * Returns the current media position in microseconds. + */ + long getPositionUs(); + + /** + * Attempts to set the playback parameters. The media clock may override these parameters if they + * are not supported. + * + * @param playbackParameters The playback parameters to attempt to set. + */ + void setPlaybackParameters(PlaybackParameters playbackParameters); + + /** + * Returns the active playback parameters. + */ + PlaybackParameters getPlaybackParameters(); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/MimeTypes.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/MimeTypes.java new file mode 100644 index 0000000000..594a62d63a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/MimeTypes.java @@ -0,0 +1,465 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.text.TextUtils; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.util.ArrayList; + +/** + * Defines common MIME types and helper methods. + */ +public final class MimeTypes { + + public static final String BASE_TYPE_VIDEO = "video"; + public static final String BASE_TYPE_AUDIO = "audio"; + public static final String BASE_TYPE_TEXT = "text"; + public static final String BASE_TYPE_APPLICATION = "application"; + + public static final String VIDEO_MP4 = BASE_TYPE_VIDEO + "/mp4"; + public static final String VIDEO_WEBM = BASE_TYPE_VIDEO + "/webm"; + public static final String VIDEO_H263 = BASE_TYPE_VIDEO + "/3gpp"; + public static final String VIDEO_H264 = BASE_TYPE_VIDEO + "/avc"; + public static final String VIDEO_H265 = BASE_TYPE_VIDEO + "/hevc"; + public static final String VIDEO_VP8 = BASE_TYPE_VIDEO + "/x-vnd.on2.vp8"; + public static final String VIDEO_VP9 = BASE_TYPE_VIDEO + "/x-vnd.on2.vp9"; + public static final String VIDEO_AV1 = BASE_TYPE_VIDEO + "/av01"; + public static final String VIDEO_MP4V = BASE_TYPE_VIDEO + "/mp4v-es"; + public static final String VIDEO_MPEG = BASE_TYPE_VIDEO + "/mpeg"; + public static final String VIDEO_MPEG2 = BASE_TYPE_VIDEO + "/mpeg2"; + public static final String VIDEO_VC1 = BASE_TYPE_VIDEO + "/wvc1"; + public static final String VIDEO_DIVX = BASE_TYPE_VIDEO + "/divx"; + public static final String VIDEO_DOLBY_VISION = BASE_TYPE_VIDEO + "/dolby-vision"; + public static final String VIDEO_UNKNOWN = BASE_TYPE_VIDEO + "/x-unknown"; + + public static final String AUDIO_MP4 = BASE_TYPE_AUDIO + "/mp4"; + public static final String AUDIO_AAC = BASE_TYPE_AUDIO + "/mp4a-latm"; + public static final String AUDIO_WEBM = BASE_TYPE_AUDIO + "/webm"; + public static final String AUDIO_MPEG = BASE_TYPE_AUDIO + "/mpeg"; + public static final String AUDIO_MPEG_L1 = BASE_TYPE_AUDIO + "/mpeg-L1"; + public static final String AUDIO_MPEG_L2 = BASE_TYPE_AUDIO + "/mpeg-L2"; + public static final String AUDIO_RAW = BASE_TYPE_AUDIO + "/raw"; + public static final String AUDIO_ALAW = BASE_TYPE_AUDIO + "/g711-alaw"; + public static final String AUDIO_MLAW = BASE_TYPE_AUDIO + "/g711-mlaw"; + public static final String AUDIO_AC3 = BASE_TYPE_AUDIO + "/ac3"; + public static final String AUDIO_E_AC3 = BASE_TYPE_AUDIO + "/eac3"; + public static final String AUDIO_E_AC3_JOC = BASE_TYPE_AUDIO + "/eac3-joc"; + public static final String AUDIO_AC4 = BASE_TYPE_AUDIO + "/ac4"; + public static final String AUDIO_TRUEHD = BASE_TYPE_AUDIO + "/true-hd"; + public static final String AUDIO_DTS = BASE_TYPE_AUDIO + "/vnd.dts"; + public static final String AUDIO_DTS_HD = BASE_TYPE_AUDIO + "/vnd.dts.hd"; + public static final String AUDIO_DTS_EXPRESS = BASE_TYPE_AUDIO + "/vnd.dts.hd;profile=lbr"; + public static final String AUDIO_VORBIS = BASE_TYPE_AUDIO + "/vorbis"; + public static final String AUDIO_OPUS = BASE_TYPE_AUDIO + "/opus"; + public static final String AUDIO_AMR_NB = BASE_TYPE_AUDIO + "/3gpp"; + public static final String AUDIO_AMR_WB = BASE_TYPE_AUDIO + "/amr-wb"; + public static final String AUDIO_FLAC = BASE_TYPE_AUDIO + "/flac"; + public static final String AUDIO_ALAC = BASE_TYPE_AUDIO + "/alac"; + public static final String AUDIO_MSGSM = BASE_TYPE_AUDIO + "/gsm"; + public static final String AUDIO_UNKNOWN = BASE_TYPE_AUDIO + "/x-unknown"; + + public static final String TEXT_VTT = BASE_TYPE_TEXT + "/vtt"; + public static final String TEXT_SSA = BASE_TYPE_TEXT + "/x-ssa"; + + public static final String APPLICATION_MP4 = BASE_TYPE_APPLICATION + "/mp4"; + public static final String APPLICATION_WEBM = BASE_TYPE_APPLICATION + "/webm"; + public static final String APPLICATION_MPD = BASE_TYPE_APPLICATION + "/dash+xml"; + public static final String APPLICATION_M3U8 = BASE_TYPE_APPLICATION + "/x-mpegURL"; + public static final String APPLICATION_SS = BASE_TYPE_APPLICATION + "/vnd.ms-sstr+xml"; + public static final String APPLICATION_ID3 = BASE_TYPE_APPLICATION + "/id3"; + public static final String APPLICATION_CEA608 = BASE_TYPE_APPLICATION + "/cea-608"; + public static final String APPLICATION_CEA708 = BASE_TYPE_APPLICATION + "/cea-708"; + public static final String APPLICATION_SUBRIP = BASE_TYPE_APPLICATION + "/x-subrip"; + public static final String APPLICATION_TTML = BASE_TYPE_APPLICATION + "/ttml+xml"; + public static final String APPLICATION_TX3G = BASE_TYPE_APPLICATION + "/x-quicktime-tx3g"; + public static final String APPLICATION_MP4VTT = BASE_TYPE_APPLICATION + "/x-mp4-vtt"; + public static final String APPLICATION_MP4CEA608 = BASE_TYPE_APPLICATION + "/x-mp4-cea-608"; + public static final String APPLICATION_RAWCC = BASE_TYPE_APPLICATION + "/x-rawcc"; + public static final String APPLICATION_VOBSUB = BASE_TYPE_APPLICATION + "/vobsub"; + public static final String APPLICATION_PGS = BASE_TYPE_APPLICATION + "/pgs"; + public static final String APPLICATION_SCTE35 = BASE_TYPE_APPLICATION + "/x-scte35"; + public static final String APPLICATION_CAMERA_MOTION = BASE_TYPE_APPLICATION + "/x-camera-motion"; + public static final String APPLICATION_EMSG = BASE_TYPE_APPLICATION + "/x-emsg"; + public static final String APPLICATION_DVBSUBS = BASE_TYPE_APPLICATION + "/dvbsubs"; + public static final String APPLICATION_EXIF = BASE_TYPE_APPLICATION + "/x-exif"; + public static final String APPLICATION_ICY = BASE_TYPE_APPLICATION + "/x-icy"; + + private static final ArrayList customMimeTypes = new ArrayList<>(); + + /** + * Registers a custom MIME type. Most applications do not need to call this method, as handling of + * standard MIME types is built in. These built-in MIME types take precedence over any registered + * via this method. If this method is used, it must be called before creating any player(s). + * + * @param mimeType The custom MIME type to register. + * @param codecPrefix The RFC 6381-style codec string prefix associated with the MIME type. + * @param trackType The {@link C}{@code .TRACK_TYPE_*} constant associated with the MIME type. + * This value is ignored if the top-level type of {@code mimeType} is audio, video or text. + */ + public static void registerCustomMimeType(String mimeType, String codecPrefix, int trackType) { + CustomMimeType customMimeType = new CustomMimeType(mimeType, codecPrefix, trackType); + int customMimeTypeCount = customMimeTypes.size(); + for (int i = 0; i < customMimeTypeCount; i++) { + if (mimeType.equals(customMimeTypes.get(i).mimeType)) { + customMimeTypes.remove(i); + break; + } + } + customMimeTypes.add(customMimeType); + } + + /** Returns whether the given string is an audio MIME type. */ + public static boolean isAudio(@Nullable String mimeType) { + return BASE_TYPE_AUDIO.equals(getTopLevelType(mimeType)); + } + + /** Returns whether the given string is a video MIME type. */ + public static boolean isVideo(@Nullable String mimeType) { + return BASE_TYPE_VIDEO.equals(getTopLevelType(mimeType)); + } + + /** Returns whether the given string is a text MIME type. */ + public static boolean isText(@Nullable String mimeType) { + return BASE_TYPE_TEXT.equals(getTopLevelType(mimeType)); + } + + /** Returns whether the given string is an application MIME type. */ + public static boolean isApplication(@Nullable String mimeType) { + return BASE_TYPE_APPLICATION.equals(getTopLevelType(mimeType)); + } + + /** + * Returns true if it is known that all samples in a stream of the given sample MIME type are + * guaranteed to be sync samples (i.e., {@link C#BUFFER_FLAG_KEY_FRAME} is guaranteed to be set on + * every sample). + * + * @param mimeType The sample MIME type. + * @return True if it is known that all samples in a stream of the given sample MIME type are + * guaranteed to be sync samples. False otherwise, including if {@code null} is passed. + */ + public static boolean allSamplesAreSyncSamples(@Nullable String mimeType) { + if (mimeType == null) { + return false; + } + // TODO: Consider adding additional audio MIME types here. + switch (mimeType) { + case AUDIO_AAC: + case AUDIO_MPEG: + case AUDIO_MPEG_L1: + case AUDIO_MPEG_L2: + return true; + default: + return false; + } + } + + /** + * Derives a video sample mimeType from a codecs attribute. + * + * @param codecs The codecs attribute. + * @return The derived video mimeType, or null if it could not be derived. + */ + @Nullable + public static String getVideoMediaMimeType(@Nullable String codecs) { + if (codecs == null) { + return null; + } + String[] codecList = Util.splitCodecs(codecs); + for (String codec : codecList) { + @Nullable String mimeType = getMediaMimeType(codec); + if (mimeType != null && isVideo(mimeType)) { + return mimeType; + } + } + return null; + } + + /** + * Derives a audio sample mimeType from a codecs attribute. + * + * @param codecs The codecs attribute. + * @return The derived audio mimeType, or null if it could not be derived. + */ + @Nullable + public static String getAudioMediaMimeType(@Nullable String codecs) { + if (codecs == null) { + return null; + } + String[] codecList = Util.splitCodecs(codecs); + for (String codec : codecList) { + @Nullable String mimeType = getMediaMimeType(codec); + if (mimeType != null && isAudio(mimeType)) { + return mimeType; + } + } + return null; + } + + /** + * Derives a mimeType from a codec identifier, as defined in RFC 6381. + * + * @param codec The codec identifier to derive. + * @return The mimeType, or null if it could not be derived. + */ + @Nullable + public static String getMediaMimeType(@Nullable String codec) { + if (codec == null) { + return null; + } + codec = Util.toLowerInvariant(codec.trim()); + if (codec.startsWith("avc1") || codec.startsWith("avc3")) { + return MimeTypes.VIDEO_H264; + } else if (codec.startsWith("hev1") || codec.startsWith("hvc1")) { + return MimeTypes.VIDEO_H265; + } else if (codec.startsWith("dvav") + || codec.startsWith("dva1") + || codec.startsWith("dvhe") + || codec.startsWith("dvh1")) { + return MimeTypes.VIDEO_DOLBY_VISION; + } else if (codec.startsWith("av01")) { + return MimeTypes.VIDEO_AV1; + } else if (codec.startsWith("vp9") || codec.startsWith("vp09")) { + return MimeTypes.VIDEO_VP9; + } else if (codec.startsWith("vp8") || codec.startsWith("vp08")) { + return MimeTypes.VIDEO_VP8; + } else if (codec.startsWith("mp4a")) { + @Nullable String mimeType = null; + if (codec.startsWith("mp4a.")) { + String objectTypeString = codec.substring(5); // remove the 'mp4a.' prefix + if (objectTypeString.length() >= 2) { + try { + String objectTypeHexString = Util.toUpperInvariant(objectTypeString.substring(0, 2)); + int objectTypeInt = Integer.parseInt(objectTypeHexString, 16); + mimeType = getMimeTypeFromMp4ObjectType(objectTypeInt); + } catch (NumberFormatException ignored) { + // Ignored. + } + } + } + return mimeType == null ? MimeTypes.AUDIO_AAC : mimeType; + } else if (codec.startsWith("ac-3") || codec.startsWith("dac3")) { + return MimeTypes.AUDIO_AC3; + } else if (codec.startsWith("ec-3") || codec.startsWith("dec3")) { + return MimeTypes.AUDIO_E_AC3; + } else if (codec.startsWith("ec+3")) { + return MimeTypes.AUDIO_E_AC3_JOC; + } else if (codec.startsWith("ac-4") || codec.startsWith("dac4")) { + return MimeTypes.AUDIO_AC4; + } else if (codec.startsWith("dtsc") || codec.startsWith("dtse")) { + return MimeTypes.AUDIO_DTS; + } else if (codec.startsWith("dtsh") || codec.startsWith("dtsl")) { + return MimeTypes.AUDIO_DTS_HD; + } else if (codec.startsWith("opus")) { + return MimeTypes.AUDIO_OPUS; + } else if (codec.startsWith("vorbis")) { + return MimeTypes.AUDIO_VORBIS; + } else if (codec.startsWith("flac")) { + return MimeTypes.AUDIO_FLAC; + } else if (codec.startsWith("stpp")) { + return MimeTypes.APPLICATION_TTML; + } else if (codec.startsWith("wvtt")) { + return MimeTypes.TEXT_VTT; + } else { + return getCustomMimeTypeForCodec(codec); + } + } + + /** + * Derives a mimeType from MP4 object type identifier, as defined in RFC 6381 and + * https://mp4ra.org/#/object_types. + * + * @param objectType The objectType identifier to derive. + * @return The mimeType, or null if it could not be derived. + */ + @Nullable + public static String getMimeTypeFromMp4ObjectType(int objectType) { + switch (objectType) { + case 0x20: + return MimeTypes.VIDEO_MP4V; + case 0x21: + return MimeTypes.VIDEO_H264; + case 0x23: + return MimeTypes.VIDEO_H265; + case 0x60: + case 0x61: + case 0x62: + case 0x63: + case 0x64: + case 0x65: + return MimeTypes.VIDEO_MPEG2; + case 0x6A: + return MimeTypes.VIDEO_MPEG; + case 0x69: + case 0x6B: + return MimeTypes.AUDIO_MPEG; + case 0xA3: + return MimeTypes.VIDEO_VC1; + case 0xB1: + return MimeTypes.VIDEO_VP9; + case 0x40: + case 0x66: + case 0x67: + case 0x68: + return MimeTypes.AUDIO_AAC; + case 0xA5: + return MimeTypes.AUDIO_AC3; + case 0xA6: + return MimeTypes.AUDIO_E_AC3; + case 0xA9: + case 0xAC: + return MimeTypes.AUDIO_DTS; + case 0xAA: + case 0xAB: + return MimeTypes.AUDIO_DTS_HD; + case 0xAD: + return MimeTypes.AUDIO_OPUS; + case 0xAE: + return MimeTypes.AUDIO_AC4; + default: + return null; + } + } + + /** + * Returns the {@link C}{@code .TRACK_TYPE_*} constant that corresponds to a specified MIME type. + * {@link C#TRACK_TYPE_UNKNOWN} if the MIME type is not known or the mapping cannot be + * established. + * + * @param mimeType The MIME type. + * @return The {@link C}{@code .TRACK_TYPE_*} constant that corresponds to a specified MIME type. + */ + public static int getTrackType(@Nullable String mimeType) { + if (TextUtils.isEmpty(mimeType)) { + return C.TRACK_TYPE_UNKNOWN; + } else if (isAudio(mimeType)) { + return C.TRACK_TYPE_AUDIO; + } else if (isVideo(mimeType)) { + return C.TRACK_TYPE_VIDEO; + } else if (isText(mimeType) || APPLICATION_CEA608.equals(mimeType) + || APPLICATION_CEA708.equals(mimeType) || APPLICATION_MP4CEA608.equals(mimeType) + || APPLICATION_SUBRIP.equals(mimeType) || APPLICATION_TTML.equals(mimeType) + || APPLICATION_TX3G.equals(mimeType) || APPLICATION_MP4VTT.equals(mimeType) + || APPLICATION_RAWCC.equals(mimeType) || APPLICATION_VOBSUB.equals(mimeType) + || APPLICATION_PGS.equals(mimeType) || APPLICATION_DVBSUBS.equals(mimeType)) { + return C.TRACK_TYPE_TEXT; + } else if (APPLICATION_ID3.equals(mimeType) + || APPLICATION_EMSG.equals(mimeType) + || APPLICATION_SCTE35.equals(mimeType)) { + return C.TRACK_TYPE_METADATA; + } else if (APPLICATION_CAMERA_MOTION.equals(mimeType)) { + return C.TRACK_TYPE_CAMERA_MOTION; + } else { + return getTrackTypeForCustomMimeType(mimeType); + } + } + + /** + * Returns the {@link C}{@code .ENCODING_*} constant that corresponds to specified MIME type, if + * it is an encoded (non-PCM) audio format, or {@link C#ENCODING_INVALID} otherwise. + * + * @param mimeType The MIME type. + * @return The {@link C}{@code .ENCODING_*} constant that corresponds to a specified MIME type, or + * {@link C#ENCODING_INVALID}. + */ + public static @C.Encoding int getEncoding(String mimeType) { + switch (mimeType) { + case MimeTypes.AUDIO_MPEG: + return C.ENCODING_MP3; + case MimeTypes.AUDIO_AC3: + return C.ENCODING_AC3; + case MimeTypes.AUDIO_E_AC3: + return C.ENCODING_E_AC3; + case MimeTypes.AUDIO_E_AC3_JOC: + return C.ENCODING_E_AC3_JOC; + case MimeTypes.AUDIO_AC4: + return C.ENCODING_AC4; + case MimeTypes.AUDIO_DTS: + return C.ENCODING_DTS; + case MimeTypes.AUDIO_DTS_HD: + return C.ENCODING_DTS_HD; + case MimeTypes.AUDIO_TRUEHD: + return C.ENCODING_DOLBY_TRUEHD; + default: + return C.ENCODING_INVALID; + } + } + + /** + * Equivalent to {@code getTrackType(getMediaMimeType(codec))}. + * + * @param codec The codec. + * @return The {@link C}{@code .TRACK_TYPE_*} constant that corresponds to a specified codec. + */ + public static int getTrackTypeOfCodec(String codec) { + return getTrackType(getMediaMimeType(codec)); + } + + /** + * Returns the top-level type of {@code mimeType}, or null if {@code mimeType} is null or does not + * contain a forward slash character ({@code '/'}). + */ + @Nullable + private static String getTopLevelType(@Nullable String mimeType) { + if (mimeType == null) { + return null; + } + int indexOfSlash = mimeType.indexOf('/'); + if (indexOfSlash == -1) { + return null; + } + return mimeType.substring(0, indexOfSlash); + } + + @Nullable + private static String getCustomMimeTypeForCodec(String codec) { + int customMimeTypeCount = customMimeTypes.size(); + for (int i = 0; i < customMimeTypeCount; i++) { + CustomMimeType customMimeType = customMimeTypes.get(i); + if (codec.startsWith(customMimeType.codecPrefix)) { + return customMimeType.mimeType; + } + } + return null; + } + + private static int getTrackTypeForCustomMimeType(String mimeType) { + int customMimeTypeCount = customMimeTypes.size(); + for (int i = 0; i < customMimeTypeCount; i++) { + CustomMimeType customMimeType = customMimeTypes.get(i); + if (mimeType.equals(customMimeType.mimeType)) { + return customMimeType.trackType; + } + } + return C.TRACK_TYPE_UNKNOWN; + } + + private MimeTypes() { + // Prevent instantiation. + } + + private static final class CustomMimeType { + public final String mimeType; + public final String codecPrefix; + public final int trackType; + + public CustomMimeType(String mimeType, String codecPrefix, int trackType) { + this.mimeType = mimeType; + this.codecPrefix = codecPrefix; + this.trackType = trackType; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/NalUnitUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/NalUnitUtil.java new file mode 100644 index 0000000000..d7409daa66 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/NalUnitUtil.java @@ -0,0 +1,519 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import java.nio.ByteBuffer; +import java.util.Arrays; + +/** + * Utility methods for handling H.264/AVC and H.265/HEVC NAL units. + */ +public final class NalUnitUtil { + + private static final String TAG = "NalUnitUtil"; + + /** + * Holds data parsed from a sequence parameter set NAL unit. + */ + public static final class SpsData { + + public final int profileIdc; + public final int constraintsFlagsAndReservedZero2Bits; + public final int levelIdc; + public final int seqParameterSetId; + public final int width; + public final int height; + public final float pixelWidthAspectRatio; + public final boolean separateColorPlaneFlag; + public final boolean frameMbsOnlyFlag; + public final int frameNumLength; + public final int picOrderCountType; + public final int picOrderCntLsbLength; + public final boolean deltaPicOrderAlwaysZeroFlag; + + public SpsData( + int profileIdc, + int constraintsFlagsAndReservedZero2Bits, + int levelIdc, + int seqParameterSetId, + int width, + int height, + float pixelWidthAspectRatio, + boolean separateColorPlaneFlag, + boolean frameMbsOnlyFlag, + int frameNumLength, + int picOrderCountType, + int picOrderCntLsbLength, + boolean deltaPicOrderAlwaysZeroFlag) { + this.profileIdc = profileIdc; + this.constraintsFlagsAndReservedZero2Bits = constraintsFlagsAndReservedZero2Bits; + this.levelIdc = levelIdc; + this.seqParameterSetId = seqParameterSetId; + this.width = width; + this.height = height; + this.pixelWidthAspectRatio = pixelWidthAspectRatio; + this.separateColorPlaneFlag = separateColorPlaneFlag; + this.frameMbsOnlyFlag = frameMbsOnlyFlag; + this.frameNumLength = frameNumLength; + this.picOrderCountType = picOrderCountType; + this.picOrderCntLsbLength = picOrderCntLsbLength; + this.deltaPicOrderAlwaysZeroFlag = deltaPicOrderAlwaysZeroFlag; + } + + } + + /** + * Holds data parsed from a picture parameter set NAL unit. + */ + public static final class PpsData { + + public final int picParameterSetId; + public final int seqParameterSetId; + public final boolean bottomFieldPicOrderInFramePresentFlag; + + public PpsData(int picParameterSetId, int seqParameterSetId, + boolean bottomFieldPicOrderInFramePresentFlag) { + this.picParameterSetId = picParameterSetId; + this.seqParameterSetId = seqParameterSetId; + this.bottomFieldPicOrderInFramePresentFlag = bottomFieldPicOrderInFramePresentFlag; + } + + } + + /** Four initial bytes that must prefix NAL units for decoding. */ + public static final byte[] NAL_START_CODE = new byte[] {0, 0, 0, 1}; + + /** Value for aspect_ratio_idc indicating an extended aspect ratio, in H.264 and H.265 SPSs. */ + public static final int EXTENDED_SAR = 0xFF; + /** Aspect ratios indexed by aspect_ratio_idc, in H.264 and H.265 SPSs. */ + public static final float[] ASPECT_RATIO_IDC_VALUES = new float[] { + 1f /* Unspecified. Assume square */, + 1f, + 12f / 11f, + 10f / 11f, + 16f / 11f, + 40f / 33f, + 24f / 11f, + 20f / 11f, + 32f / 11f, + 80f / 33f, + 18f / 11f, + 15f / 11f, + 64f / 33f, + 160f / 99f, + 4f / 3f, + 3f / 2f, + 2f + }; + + private static final int H264_NAL_UNIT_TYPE_SEI = 6; // Supplemental enhancement information + private static final int H264_NAL_UNIT_TYPE_SPS = 7; // Sequence parameter set + private static final int H265_NAL_UNIT_TYPE_PREFIX_SEI = 39; + + private static final Object scratchEscapePositionsLock = new Object(); + + /** + * Temporary store for positions of escape codes in {@link #unescapeStream(byte[], int)}. Guarded + * by {@link #scratchEscapePositionsLock}. + */ + private static int[] scratchEscapePositions = new int[10]; + + /** + * Unescapes {@code data} up to the specified limit, replacing occurrences of [0, 0, 3] with + * [0, 0]. The unescaped data is returned in-place, with the return value indicating its length. + *

+ * Executions of this method are mutually exclusive, so it should not be called with very large + * buffers. + * + * @param data The data to unescape. + * @param limit The limit (exclusive) of the data to unescape. + * @return The length of the unescaped data. + */ + public static int unescapeStream(byte[] data, int limit) { + synchronized (scratchEscapePositionsLock) { + int position = 0; + int scratchEscapeCount = 0; + while (position < limit) { + position = findNextUnescapeIndex(data, position, limit); + if (position < limit) { + if (scratchEscapePositions.length <= scratchEscapeCount) { + // Grow scratchEscapePositions to hold a larger number of positions. + scratchEscapePositions = Arrays.copyOf(scratchEscapePositions, + scratchEscapePositions.length * 2); + } + scratchEscapePositions[scratchEscapeCount++] = position; + position += 3; + } + } + + int unescapedLength = limit - scratchEscapeCount; + int escapedPosition = 0; // The position being read from. + int unescapedPosition = 0; // The position being written to. + for (int i = 0; i < scratchEscapeCount; i++) { + int nextEscapePosition = scratchEscapePositions[i]; + int copyLength = nextEscapePosition - escapedPosition; + System.arraycopy(data, escapedPosition, data, unescapedPosition, copyLength); + unescapedPosition += copyLength; + data[unescapedPosition++] = 0; + data[unescapedPosition++] = 0; + escapedPosition += copyLength + 3; + } + + int remainingLength = unescapedLength - unescapedPosition; + System.arraycopy(data, escapedPosition, data, unescapedPosition, remainingLength); + return unescapedLength; + } + } + + /** + * Discards data from the buffer up to the first SPS, where {@code data.position()} is interpreted + * as the length of the buffer. + *

+ * When the method returns, {@code data.position()} will contain the new length of the buffer. If + * the buffer is not empty it is guaranteed to start with an SPS. + * + * @param data Buffer containing start code delimited NAL units. + */ + public static void discardToSps(ByteBuffer data) { + int length = data.position(); + int consecutiveZeros = 0; + int offset = 0; + while (offset + 1 < length) { + int value = data.get(offset) & 0xFF; + if (consecutiveZeros == 3) { + if (value == 1 && (data.get(offset + 1) & 0x1F) == H264_NAL_UNIT_TYPE_SPS) { + // Copy from this NAL unit onwards to the start of the buffer. + ByteBuffer offsetData = data.duplicate(); + offsetData.position(offset - 3); + offsetData.limit(length); + data.position(0); + data.put(offsetData); + return; + } + } else if (value == 0) { + consecutiveZeros++; + } + if (value != 0) { + consecutiveZeros = 0; + } + offset++; + } + // Empty the buffer if the SPS NAL unit was not found. + data.clear(); + } + + /** + * Returns whether the NAL unit with the specified header contains supplemental enhancement + * information. + * + * @param mimeType The sample MIME type. + * @param nalUnitHeaderFirstByte The first byte of nal_unit(). + * @return Whether the NAL unit with the specified header is an SEI NAL unit. + */ + public static boolean isNalUnitSei(String mimeType, byte nalUnitHeaderFirstByte) { + return (MimeTypes.VIDEO_H264.equals(mimeType) + && (nalUnitHeaderFirstByte & 0x1F) == H264_NAL_UNIT_TYPE_SEI) + || (MimeTypes.VIDEO_H265.equals(mimeType) + && ((nalUnitHeaderFirstByte & 0x7E) >> 1) == H265_NAL_UNIT_TYPE_PREFIX_SEI); + } + + /** + * Returns the type of the NAL unit in {@code data} that starts at {@code offset}. + * + * @param data The data to search. + * @param offset The start offset of a NAL unit. Must lie between {@code -3} (inclusive) and + * {@code data.length - 3} (exclusive). + * @return The type of the unit. + */ + public static int getNalUnitType(byte[] data, int offset) { + return data[offset + 3] & 0x1F; + } + + /** + * Returns the type of the H.265 NAL unit in {@code data} that starts at {@code offset}. + * + * @param data The data to search. + * @param offset The start offset of a NAL unit. Must lie between {@code -3} (inclusive) and + * {@code data.length - 3} (exclusive). + * @return The type of the unit. + */ + public static int getH265NalUnitType(byte[] data, int offset) { + return (data[offset + 3] & 0x7E) >> 1; + } + + /** + * Parses an SPS NAL unit using the syntax defined in ITU-T Recommendation H.264 (2013) subsection + * 7.3.2.1.1. + * + * @param nalData A buffer containing escaped SPS data. + * @param nalOffset The offset of the NAL unit header in {@code nalData}. + * @param nalLimit The limit of the NAL unit in {@code nalData}. + * @return A parsed representation of the SPS data. + */ + public static SpsData parseSpsNalUnit(byte[] nalData, int nalOffset, int nalLimit) { + ParsableNalUnitBitArray data = new ParsableNalUnitBitArray(nalData, nalOffset, nalLimit); + data.skipBits(8); // nal_unit + int profileIdc = data.readBits(8); + int constraintsFlagsAndReservedZero2Bits = data.readBits(8); + int levelIdc = data.readBits(8); + int seqParameterSetId = data.readUnsignedExpGolombCodedInt(); + + int chromaFormatIdc = 1; // Default is 4:2:0 + boolean separateColorPlaneFlag = false; + if (profileIdc == 100 || profileIdc == 110 || profileIdc == 122 || profileIdc == 244 + || profileIdc == 44 || profileIdc == 83 || profileIdc == 86 || profileIdc == 118 + || profileIdc == 128 || profileIdc == 138) { + chromaFormatIdc = data.readUnsignedExpGolombCodedInt(); + if (chromaFormatIdc == 3) { + separateColorPlaneFlag = data.readBit(); + } + data.readUnsignedExpGolombCodedInt(); // bit_depth_luma_minus8 + data.readUnsignedExpGolombCodedInt(); // bit_depth_chroma_minus8 + data.skipBit(); // qpprime_y_zero_transform_bypass_flag + boolean seqScalingMatrixPresentFlag = data.readBit(); + if (seqScalingMatrixPresentFlag) { + int limit = (chromaFormatIdc != 3) ? 8 : 12; + for (int i = 0; i < limit; i++) { + boolean seqScalingListPresentFlag = data.readBit(); + if (seqScalingListPresentFlag) { + skipScalingList(data, i < 6 ? 16 : 64); + } + } + } + } + + int frameNumLength = data.readUnsignedExpGolombCodedInt() + 4; // log2_max_frame_num_minus4 + 4 + int picOrderCntType = data.readUnsignedExpGolombCodedInt(); + int picOrderCntLsbLength = 0; + boolean deltaPicOrderAlwaysZeroFlag = false; + if (picOrderCntType == 0) { + // log2_max_pic_order_cnt_lsb_minus4 + 4 + picOrderCntLsbLength = data.readUnsignedExpGolombCodedInt() + 4; + } else if (picOrderCntType == 1) { + deltaPicOrderAlwaysZeroFlag = data.readBit(); // delta_pic_order_always_zero_flag + data.readSignedExpGolombCodedInt(); // offset_for_non_ref_pic + data.readSignedExpGolombCodedInt(); // offset_for_top_to_bottom_field + long numRefFramesInPicOrderCntCycle = data.readUnsignedExpGolombCodedInt(); + for (int i = 0; i < numRefFramesInPicOrderCntCycle; i++) { + data.readUnsignedExpGolombCodedInt(); // offset_for_ref_frame[i] + } + } + data.readUnsignedExpGolombCodedInt(); // max_num_ref_frames + data.skipBit(); // gaps_in_frame_num_value_allowed_flag + + int picWidthInMbs = data.readUnsignedExpGolombCodedInt() + 1; + int picHeightInMapUnits = data.readUnsignedExpGolombCodedInt() + 1; + boolean frameMbsOnlyFlag = data.readBit(); + int frameHeightInMbs = (2 - (frameMbsOnlyFlag ? 1 : 0)) * picHeightInMapUnits; + if (!frameMbsOnlyFlag) { + data.skipBit(); // mb_adaptive_frame_field_flag + } + + data.skipBit(); // direct_8x8_inference_flag + int frameWidth = picWidthInMbs * 16; + int frameHeight = frameHeightInMbs * 16; + boolean frameCroppingFlag = data.readBit(); + if (frameCroppingFlag) { + int frameCropLeftOffset = data.readUnsignedExpGolombCodedInt(); + int frameCropRightOffset = data.readUnsignedExpGolombCodedInt(); + int frameCropTopOffset = data.readUnsignedExpGolombCodedInt(); + int frameCropBottomOffset = data.readUnsignedExpGolombCodedInt(); + int cropUnitX; + int cropUnitY; + if (chromaFormatIdc == 0) { + cropUnitX = 1; + cropUnitY = 2 - (frameMbsOnlyFlag ? 1 : 0); + } else { + int subWidthC = (chromaFormatIdc == 3) ? 1 : 2; + int subHeightC = (chromaFormatIdc == 1) ? 2 : 1; + cropUnitX = subWidthC; + cropUnitY = subHeightC * (2 - (frameMbsOnlyFlag ? 1 : 0)); + } + frameWidth -= (frameCropLeftOffset + frameCropRightOffset) * cropUnitX; + frameHeight -= (frameCropTopOffset + frameCropBottomOffset) * cropUnitY; + } + + float pixelWidthHeightRatio = 1; + boolean vuiParametersPresentFlag = data.readBit(); + if (vuiParametersPresentFlag) { + boolean aspectRatioInfoPresentFlag = data.readBit(); + if (aspectRatioInfoPresentFlag) { + int aspectRatioIdc = data.readBits(8); + if (aspectRatioIdc == NalUnitUtil.EXTENDED_SAR) { + int sarWidth = data.readBits(16); + int sarHeight = data.readBits(16); + if (sarWidth != 0 && sarHeight != 0) { + pixelWidthHeightRatio = (float) sarWidth / sarHeight; + } + } else if (aspectRatioIdc < NalUnitUtil.ASPECT_RATIO_IDC_VALUES.length) { + pixelWidthHeightRatio = NalUnitUtil.ASPECT_RATIO_IDC_VALUES[aspectRatioIdc]; + } else { + Log.w(TAG, "Unexpected aspect_ratio_idc value: " + aspectRatioIdc); + } + } + } + + return new SpsData( + profileIdc, + constraintsFlagsAndReservedZero2Bits, + levelIdc, + seqParameterSetId, + frameWidth, + frameHeight, + pixelWidthHeightRatio, + separateColorPlaneFlag, + frameMbsOnlyFlag, + frameNumLength, + picOrderCntType, + picOrderCntLsbLength, + deltaPicOrderAlwaysZeroFlag); + } + + /** + * Parses a PPS NAL unit using the syntax defined in ITU-T Recommendation H.264 (2013) subsection + * 7.3.2.2. + * + * @param nalData A buffer containing escaped PPS data. + * @param nalOffset The offset of the NAL unit header in {@code nalData}. + * @param nalLimit The limit of the NAL unit in {@code nalData}. + * @return A parsed representation of the PPS data. + */ + public static PpsData parsePpsNalUnit(byte[] nalData, int nalOffset, int nalLimit) { + ParsableNalUnitBitArray data = new ParsableNalUnitBitArray(nalData, nalOffset, nalLimit); + data.skipBits(8); // nal_unit + int picParameterSetId = data.readUnsignedExpGolombCodedInt(); + int seqParameterSetId = data.readUnsignedExpGolombCodedInt(); + data.skipBit(); // entropy_coding_mode_flag + boolean bottomFieldPicOrderInFramePresentFlag = data.readBit(); + return new PpsData(picParameterSetId, seqParameterSetId, bottomFieldPicOrderInFramePresentFlag); + } + + /** + * Finds the first NAL unit in {@code data}. + *

+ * If {@code prefixFlags} is null then the first three bytes of a NAL unit must be entirely + * contained within the part of the array being searched in order for it to be found. + *

+ * When {@code prefixFlags} is non-null, this method supports finding NAL units whose first four + * bytes span {@code data} arrays passed to successive calls. To use this feature, pass the same + * {@code prefixFlags} parameter to successive calls. State maintained in this parameter enables + * the detection of such NAL units. Note that when using this feature, the return value may be 3, + * 2 or 1 less than {@code startOffset}, to indicate a NAL unit starting 3, 2 or 1 bytes before + * the first byte in the current array. + * + * @param data The data to search. + * @param startOffset The offset (inclusive) in the data to start the search. + * @param endOffset The offset (exclusive) in the data to end the search. + * @param prefixFlags A boolean array whose first three elements are used to store the state + * required to detect NAL units where the NAL unit prefix spans array boundaries. The array + * must be at least 3 elements long. + * @return The offset of the NAL unit, or {@code endOffset} if a NAL unit was not found. + */ + public static int findNalUnit(byte[] data, int startOffset, int endOffset, + boolean[] prefixFlags) { + int length = endOffset - startOffset; + + Assertions.checkState(length >= 0); + if (length == 0) { + return endOffset; + } + + if (prefixFlags != null) { + if (prefixFlags[0]) { + clearPrefixFlags(prefixFlags); + return startOffset - 3; + } else if (length > 1 && prefixFlags[1] && data[startOffset] == 1) { + clearPrefixFlags(prefixFlags); + return startOffset - 2; + } else if (length > 2 && prefixFlags[2] && data[startOffset] == 0 + && data[startOffset + 1] == 1) { + clearPrefixFlags(prefixFlags); + return startOffset - 1; + } + } + + int limit = endOffset - 1; + // We're looking for the NAL unit start code prefix 0x000001. The value of i tracks the index of + // the third byte. + for (int i = startOffset + 2; i < limit; i += 3) { + if ((data[i] & 0xFE) != 0) { + // There isn't a NAL prefix here, or at the next two positions. Do nothing and let the + // loop advance the index by three. + } else if (data[i - 2] == 0 && data[i - 1] == 0 && data[i] == 1) { + if (prefixFlags != null) { + clearPrefixFlags(prefixFlags); + } + return i - 2; + } else { + // There isn't a NAL prefix here, but there might be at the next position. We should + // only skip forward by one. The loop will skip forward by three, so subtract two here. + i -= 2; + } + } + + if (prefixFlags != null) { + // True if the last three bytes in the data seen so far are {0,0,1}. + prefixFlags[0] = length > 2 + ? (data[endOffset - 3] == 0 && data[endOffset - 2] == 0 && data[endOffset - 1] == 1) + : length == 2 ? (prefixFlags[2] && data[endOffset - 2] == 0 && data[endOffset - 1] == 1) + : (prefixFlags[1] && data[endOffset - 1] == 1); + // True if the last two bytes in the data seen so far are {0,0}. + prefixFlags[1] = length > 1 ? data[endOffset - 2] == 0 && data[endOffset - 1] == 0 + : prefixFlags[2] && data[endOffset - 1] == 0; + // True if the last byte in the data seen so far is {0}. + prefixFlags[2] = data[endOffset - 1] == 0; + } + + return endOffset; + } + + /** + * Clears prefix flags, as used by {@link #findNalUnit(byte[], int, int, boolean[])}. + * + * @param prefixFlags The flags to clear. + */ + public static void clearPrefixFlags(boolean[] prefixFlags) { + prefixFlags[0] = false; + prefixFlags[1] = false; + prefixFlags[2] = false; + } + + private static int findNextUnescapeIndex(byte[] bytes, int offset, int limit) { + for (int i = offset; i < limit - 2; i++) { + if (bytes[i] == 0x00 && bytes[i + 1] == 0x00 && bytes[i + 2] == 0x03) { + return i; + } + } + return limit; + } + + private static void skipScalingList(ParsableNalUnitBitArray bitArray, int size) { + int lastScale = 8; + int nextScale = 8; + for (int i = 0; i < size; i++) { + if (nextScale != 0) { + int deltaScale = bitArray.readSignedExpGolombCodedInt(); + nextScale = (lastScale + deltaScale + 256) % 256; + } + lastScale = (nextScale == 0) ? lastScale : nextScale; + } + } + + private NalUnitUtil() { + // Prevent instantiation. + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/NonNullApi.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/NonNullApi.java new file mode 100644 index 0000000000..0c9b9b2182 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/NonNullApi.java @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import java.lang.annotation.ElementType; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import javax.annotation.Nonnull; +import javax.annotation.meta.TypeQualifierDefault; +import kotlin.annotations.jvm.MigrationStatus; +import kotlin.annotations.jvm.UnderMigration; + +/** + * Annotation to declare all type usages in the annotated instance as {@link Nonnull}, unless + * explicitly marked with a nullable annotation. + */ +@Nonnull +@TypeQualifierDefault(ElementType.TYPE_USE) +@UnderMigration(status = MigrationStatus.STRICT) +@Retention(RetentionPolicy.CLASS) +public @interface NonNullApi {} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/NotificationUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/NotificationUtil.java new file mode 100644 index 0000000000..df68c8fe59 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/NotificationUtil.java @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.annotation.SuppressLint; +import android.app.Notification; +import android.app.NotificationChannel; +import android.app.NotificationManager; +import android.content.Context; +import android.content.Intent; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import androidx.annotation.StringRes; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** Utility methods for displaying {@link Notification Notifications}. */ +@SuppressLint("InlinedApi") +public final class NotificationUtil { + + /** + * Notification channel importance levels. One of {@link #IMPORTANCE_UNSPECIFIED}, {@link + * #IMPORTANCE_NONE}, {@link #IMPORTANCE_MIN}, {@link #IMPORTANCE_LOW}, {@link + * #IMPORTANCE_DEFAULT} or {@link #IMPORTANCE_HIGH}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + IMPORTANCE_UNSPECIFIED, + IMPORTANCE_NONE, + IMPORTANCE_MIN, + IMPORTANCE_LOW, + IMPORTANCE_DEFAULT, + IMPORTANCE_HIGH + }) + public @interface Importance {} + /** @see NotificationManager#IMPORTANCE_UNSPECIFIED */ + public static final int IMPORTANCE_UNSPECIFIED = NotificationManager.IMPORTANCE_UNSPECIFIED; + /** @see NotificationManager#IMPORTANCE_NONE */ + public static final int IMPORTANCE_NONE = NotificationManager.IMPORTANCE_NONE; + /** @see NotificationManager#IMPORTANCE_MIN */ + public static final int IMPORTANCE_MIN = NotificationManager.IMPORTANCE_MIN; + /** @see NotificationManager#IMPORTANCE_LOW */ + public static final int IMPORTANCE_LOW = NotificationManager.IMPORTANCE_LOW; + /** @see NotificationManager#IMPORTANCE_DEFAULT */ + public static final int IMPORTANCE_DEFAULT = NotificationManager.IMPORTANCE_DEFAULT; + /** @see NotificationManager#IMPORTANCE_HIGH */ + public static final int IMPORTANCE_HIGH = NotificationManager.IMPORTANCE_HIGH; + + /** @deprecated Use {@link #createNotificationChannel(Context, String, int, int, int)}. */ + @Deprecated + public static void createNotificationChannel( + Context context, String id, @StringRes int nameResourceId, @Importance int importance) { + createNotificationChannel( + context, id, nameResourceId, /* descriptionResourceId= */ 0, importance); + } + + /** + * Creates a notification channel that notifications can be posted to. See {@link + * NotificationChannel} and {@link + * NotificationManager#createNotificationChannel(NotificationChannel)} for details. + * + * @param context A {@link Context}. + * @param id The id of the channel. Must be unique per package. The value may be truncated if it's + * too long. + * @param nameResourceId A string resource identifier for the user visible name of the channel. + * The recommended maximum length is 40 characters. The string may be truncated if it's too + * long. You can rename the channel when the system locale changes by listening for the {@link + * Intent#ACTION_LOCALE_CHANGED} broadcast. + * @param descriptionResourceId A string resource identifier for the user visible description of + * the channel, or 0 if no description is provided. The recommended maximum length is 300 + * characters. The value may be truncated if it is too long. You can change the description of + * the channel when the system locale changes by listening for the {@link + * Intent#ACTION_LOCALE_CHANGED} broadcast. + * @param importance The importance of the channel. This controls how interruptive notifications + * posted to this channel are. One of {@link #IMPORTANCE_UNSPECIFIED}, {@link + * #IMPORTANCE_NONE}, {@link #IMPORTANCE_MIN}, {@link #IMPORTANCE_LOW}, {@link + * #IMPORTANCE_DEFAULT} and {@link #IMPORTANCE_HIGH}. + */ + public static void createNotificationChannel( + Context context, + String id, + @StringRes int nameResourceId, + @StringRes int descriptionResourceId, + @Importance int importance) { + if (Util.SDK_INT >= 26) { + NotificationManager notificationManager = + (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); + NotificationChannel channel = + new NotificationChannel(id, context.getString(nameResourceId), importance); + if (descriptionResourceId != 0) { + channel.setDescription(context.getString(descriptionResourceId)); + } + notificationManager.createNotificationChannel(channel); + } + } + + /** + * Post a notification to be shown in the status bar. If a notification with the same id has + * already been posted by your application and has not yet been canceled, it will be replaced by + * the updated information. If {@code notification} is {@code null} then any notification + * previously shown with the specified id will be cancelled. + * + * @param context A {@link Context}. + * @param id The notification id. + * @param notification The {@link Notification} to post, or {@code null} to cancel a previously + * shown notification. + */ + public static void setNotification(Context context, int id, @Nullable Notification notification) { + NotificationManager notificationManager = + (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); + if (notification != null) { + notificationManager.notify(id, notification); + } else { + notificationManager.cancel(id); + } + } + + private NotificationUtil() {} +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ParsableBitArray.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ParsableBitArray.java new file mode 100644 index 0000000000..3d6a702723 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ParsableBitArray.java @@ -0,0 +1,323 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +/** + * Wraps a byte array, providing methods that allow it to be read as a bitstream. + */ +public final class ParsableBitArray { + + public byte[] data; + + // The offset within the data, stored as the current byte offset, and the bit offset within that + // byte (from 0 to 7). + private int byteOffset; + private int bitOffset; + private int byteLimit; + + /** Creates a new instance that initially has no backing data. */ + public ParsableBitArray() { + data = Util.EMPTY_BYTE_ARRAY; + } + + /** + * Creates a new instance that wraps an existing array. + * + * @param data The data to wrap. + */ + public ParsableBitArray(byte[] data) { + this(data, data.length); + } + + /** + * Creates a new instance that wraps an existing array. + * + * @param data The data to wrap. + * @param limit The limit in bytes. + */ + public ParsableBitArray(byte[] data, int limit) { + this.data = data; + byteLimit = limit; + } + + /** + * Updates the instance to wrap {@code data}, and resets the position to zero. + * + * @param data The array to wrap. + */ + public void reset(byte[] data) { + reset(data, data.length); + } + + /** + * Sets this instance's data, position and limit to match the provided {@code parsableByteArray}. + * Any modifications to the underlying data array will be visible in both instances + * + * @param parsableByteArray The {@link ParsableByteArray}. + */ + public void reset(ParsableByteArray parsableByteArray) { + reset(parsableByteArray.data, parsableByteArray.limit()); + setPosition(parsableByteArray.getPosition() * 8); + } + + /** + * Updates the instance to wrap {@code data}, and resets the position to zero. + * + * @param data The array to wrap. + * @param limit The limit in bytes. + */ + public void reset(byte[] data, int limit) { + this.data = data; + byteOffset = 0; + bitOffset = 0; + byteLimit = limit; + } + + /** + * Returns the number of bits yet to be read. + */ + public int bitsLeft() { + return (byteLimit - byteOffset) * 8 - bitOffset; + } + + /** + * Returns the current bit offset. + */ + public int getPosition() { + return byteOffset * 8 + bitOffset; + } + + /** + * Returns the current byte offset. Must only be called when the position is byte aligned. + * + * @throws IllegalStateException If the position isn't byte aligned. + */ + public int getBytePosition() { + Assertions.checkState(bitOffset == 0); + return byteOffset; + } + + /** + * Sets the current bit offset. + * + * @param position The position to set. + */ + public void setPosition(int position) { + byteOffset = position / 8; + bitOffset = position - (byteOffset * 8); + assertValidOffset(); + } + + /** + * Skips a single bit. + */ + public void skipBit() { + if (++bitOffset == 8) { + bitOffset = 0; + byteOffset++; + } + assertValidOffset(); + } + + /** + * Skips bits and moves current reading position forward. + * + * @param numBits The number of bits to skip. + */ + public void skipBits(int numBits) { + int numBytes = numBits / 8; + byteOffset += numBytes; + bitOffset += numBits - (numBytes * 8); + if (bitOffset > 7) { + byteOffset++; + bitOffset -= 8; + } + assertValidOffset(); + } + + /** + * Reads a single bit. + * + * @return Whether the bit is set. + */ + public boolean readBit() { + boolean returnValue = (data[byteOffset] & (0x80 >> bitOffset)) != 0; + skipBit(); + return returnValue; + } + + /** + * Reads up to 32 bits. + * + * @param numBits The number of bits to read. + * @return An integer whose bottom {@code numBits} bits hold the read data. + */ + public int readBits(int numBits) { + if (numBits == 0) { + return 0; + } + int returnValue = 0; + bitOffset += numBits; + while (bitOffset > 8) { + bitOffset -= 8; + returnValue |= (data[byteOffset++] & 0xFF) << bitOffset; + } + returnValue |= (data[byteOffset] & 0xFF) >> (8 - bitOffset); + returnValue &= 0xFFFFFFFF >>> (32 - numBits); + if (bitOffset == 8) { + bitOffset = 0; + byteOffset++; + } + assertValidOffset(); + return returnValue; + } + + /** + * Reads up to 64 bits. + * + * @param numBits The number of bits to read. + * @return A long whose bottom {@code numBits} bits hold the read data. + */ + public long readBitsToLong(int numBits) { + if (numBits <= 32) { + return Util.toUnsignedLong(readBits(numBits)); + } + return Util.toLong(readBits(numBits - 32), readBits(32)); + } + + /** + * Reads {@code numBits} bits into {@code buffer}. + * + * @param buffer The array into which the read data should be written. The trailing {@code numBits + * % 8} bits are written into the most significant bits of the last modified {@code buffer} + * byte. The remaining ones are unmodified. + * @param offset The offset in {@code buffer} at which the read data should be written. + * @param numBits The number of bits to read. + */ + public void readBits(byte[] buffer, int offset, int numBits) { + // Whole bytes. + int to = offset + (numBits >> 3) /* numBits / 8 */; + for (int i = offset; i < to; i++) { + buffer[i] = (byte) (data[byteOffset++] << bitOffset); + buffer[i] = (byte) (buffer[i] | ((data[byteOffset] & 0xFF) >> (8 - bitOffset))); + } + // Trailing bits. + int bitsLeft = numBits & 7 /* numBits % 8 */; + if (bitsLeft == 0) { + return; + } + // Set bits that are going to be overwritten to 0. + buffer[to] = (byte) (buffer[to] & (0xFF >> bitsLeft)); + if (bitOffset + bitsLeft > 8) { + // We read the rest of data[byteOffset] and increase byteOffset. + buffer[to] = (byte) (buffer[to] | ((data[byteOffset++] & 0xFF) << bitOffset)); + bitOffset -= 8; + } + bitOffset += bitsLeft; + int lastDataByteTrailingBits = (data[byteOffset] & 0xFF) >> (8 - bitOffset); + buffer[to] |= (byte) (lastDataByteTrailingBits << (8 - bitsLeft)); + if (bitOffset == 8) { + bitOffset = 0; + byteOffset++; + } + assertValidOffset(); + } + + /** + * Aligns the position to the next byte boundary. Does nothing if the position is already aligned. + */ + public void byteAlign() { + if (bitOffset == 0) { + return; + } + bitOffset = 0; + byteOffset++; + assertValidOffset(); + } + + /** + * Reads the next {@code length} bytes into {@code buffer}. Must only be called when the position + * is byte aligned. + * + * @see System#arraycopy(Object, int, Object, int, int) + * @param buffer The array into which the read data should be written. + * @param offset The offset in {@code buffer} at which the read data should be written. + * @param length The number of bytes to read. + * @throws IllegalStateException If the position isn't byte aligned. + */ + public void readBytes(byte[] buffer, int offset, int length) { + Assertions.checkState(bitOffset == 0); + System.arraycopy(data, byteOffset, buffer, offset, length); + byteOffset += length; + assertValidOffset(); + } + + /** + * Skips the next {@code length} bytes. Must only be called when the position is byte aligned. + * + * @param length The number of bytes to read. + * @throws IllegalStateException If the position isn't byte aligned. + */ + public void skipBytes(int length) { + Assertions.checkState(bitOffset == 0); + byteOffset += length; + assertValidOffset(); + } + + /** + * Overwrites {@code numBits} from this array using the {@code numBits} least significant bits + * from {@code value}. Bits are written in order from most significant to least significant. The + * read position is advanced by {@code numBits}. + * + * @param value The integer whose {@code numBits} least significant bits are written into {@link + * #data}. + * @param numBits The number of bits to write. + */ + public void putInt(int value, int numBits) { + int remainingBitsToRead = numBits; + if (numBits < 32) { + value &= (1 << numBits) - 1; + } + int firstByteReadSize = Math.min(8 - bitOffset, numBits); + int firstByteRightPaddingSize = 8 - bitOffset - firstByteReadSize; + int firstByteBitmask = (0xFF00 >> bitOffset) | ((1 << firstByteRightPaddingSize) - 1); + data[byteOffset] = (byte) (data[byteOffset] & firstByteBitmask); + int firstByteInputBits = value >>> (numBits - firstByteReadSize); + data[byteOffset] = + (byte) (data[byteOffset] | (firstByteInputBits << firstByteRightPaddingSize)); + remainingBitsToRead -= firstByteReadSize; + int currentByteIndex = byteOffset + 1; + while (remainingBitsToRead > 8) { + data[currentByteIndex++] = (byte) (value >>> (remainingBitsToRead - 8)); + remainingBitsToRead -= 8; + } + int lastByteRightPaddingSize = 8 - remainingBitsToRead; + data[currentByteIndex] = + (byte) (data[currentByteIndex] & ((1 << lastByteRightPaddingSize) - 1)); + int lastByteInput = value & ((1 << remainingBitsToRead) - 1); + data[currentByteIndex] = + (byte) (data[currentByteIndex] | (lastByteInput << lastByteRightPaddingSize)); + skipBits(numBits); + assertValidOffset(); + } + + private void assertValidOffset() { + // It is fine for position to be at the end of the array, but no further. + Assertions.checkState(byteOffset >= 0 + && (byteOffset < byteLimit || (byteOffset == byteLimit && bitOffset == 0))); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ParsableByteArray.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ParsableByteArray.java new file mode 100644 index 0000000000..9ad9dd1aa7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ParsableByteArray.java @@ -0,0 +1,586 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import java.nio.ByteBuffer; +import java.nio.charset.Charset; + +/** + * Wraps a byte array, providing a set of methods for parsing data from it. Numerical values are + * parsed with the assumption that their constituent bytes are in big endian order. + */ +public final class ParsableByteArray { + + public byte[] data; + + private int position; + private int limit; + + /** Creates a new instance that initially has no backing data. */ + public ParsableByteArray() { + data = Util.EMPTY_BYTE_ARRAY; + } + + /** + * Creates a new instance with {@code limit} bytes and sets the limit. + * + * @param limit The limit to set. + */ + public ParsableByteArray(int limit) { + this.data = new byte[limit]; + this.limit = limit; + } + + /** + * Creates a new instance wrapping {@code data}, and sets the limit to {@code data.length}. + * + * @param data The array to wrap. + */ + public ParsableByteArray(byte[] data) { + this.data = data; + limit = data.length; + } + + /** + * Creates a new instance that wraps an existing array. + * + * @param data The data to wrap. + * @param limit The limit to set. + */ + public ParsableByteArray(byte[] data, int limit) { + this.data = data; + this.limit = limit; + } + + /** Sets the position and limit to zero. */ + public void reset() { + position = 0; + limit = 0; + } + + /** + * Resets the position to zero and the limit to the specified value. If the limit exceeds the + * capacity, {@code data} is replaced with a new array of sufficient size. + * + * @param limit The limit to set. + */ + public void reset(int limit) { + reset(capacity() < limit ? new byte[limit] : data, limit); + } + + /** + * Updates the instance to wrap {@code data}, and resets the position to zero and the limit to + * {@code data.length}. + * + * @param data The array to wrap. + */ + public void reset(byte[] data) { + reset(data, data.length); + } + + /** + * Updates the instance to wrap {@code data}, and resets the position to zero. + * + * @param data The array to wrap. + * @param limit The limit to set. + */ + public void reset(byte[] data, int limit) { + this.data = data; + this.limit = limit; + position = 0; + } + + /** + * Returns the number of bytes yet to be read. + */ + public int bytesLeft() { + return limit - position; + } + + /** + * Returns the limit. + */ + public int limit() { + return limit; + } + + /** + * Sets the limit. + * + * @param limit The limit to set. + */ + public void setLimit(int limit) { + Assertions.checkArgument(limit >= 0 && limit <= data.length); + this.limit = limit; + } + + /** + * Returns the current offset in the array, in bytes. + */ + public int getPosition() { + return position; + } + + /** + * Returns the capacity of the array, which may be larger than the limit. + */ + public int capacity() { + return data.length; + } + + /** + * Sets the reading offset in the array. + * + * @param position Byte offset in the array from which to read. + * @throws IllegalArgumentException Thrown if the new position is neither in nor at the end of the + * array. + */ + public void setPosition(int position) { + // It is fine for position to be at the end of the array. + Assertions.checkArgument(position >= 0 && position <= limit); + this.position = position; + } + + /** + * Moves the reading offset by {@code bytes}. + * + * @param bytes The number of bytes to skip. + * @throws IllegalArgumentException Thrown if the new position is neither in nor at the end of the + * array. + */ + public void skipBytes(int bytes) { + setPosition(position + bytes); + } + + /** + * Reads the next {@code length} bytes into {@code bitArray}, and resets the position of + * {@code bitArray} to zero. + * + * @param bitArray The {@link ParsableBitArray} into which the bytes should be read. + * @param length The number of bytes to write. + */ + public void readBytes(ParsableBitArray bitArray, int length) { + readBytes(bitArray.data, 0, length); + bitArray.setPosition(0); + } + + /** + * Reads the next {@code length} bytes into {@code buffer} at {@code offset}. + * + * @see System#arraycopy(Object, int, Object, int, int) + * @param buffer The array into which the read data should be written. + * @param offset The offset in {@code buffer} at which the read data should be written. + * @param length The number of bytes to read. + */ + public void readBytes(byte[] buffer, int offset, int length) { + System.arraycopy(data, position, buffer, offset, length); + position += length; + } + + /** + * Reads the next {@code length} bytes into {@code buffer}. + * + * @see ByteBuffer#put(byte[], int, int) + * @param buffer The {@link ByteBuffer} into which the read data should be written. + * @param length The number of bytes to read. + */ + public void readBytes(ByteBuffer buffer, int length) { + buffer.put(data, position, length); + position += length; + } + + /** + * Peeks at the next byte as an unsigned value. + */ + public int peekUnsignedByte() { + return (data[position] & 0xFF); + } + + /** + * Peeks at the next char. + */ + public char peekChar() { + return (char) ((data[position] & 0xFF) << 8 + | (data[position + 1] & 0xFF)); + } + + /** + * Reads the next byte as an unsigned value. + */ + public int readUnsignedByte() { + return (data[position++] & 0xFF); + } + + /** + * Reads the next two bytes as an unsigned value. + */ + public int readUnsignedShort() { + return (data[position++] & 0xFF) << 8 + | (data[position++] & 0xFF); + } + + /** + * Reads the next two bytes as an unsigned value. + */ + public int readLittleEndianUnsignedShort() { + return (data[position++] & 0xFF) | (data[position++] & 0xFF) << 8; + } + + /** + * Reads the next two bytes as a signed value. + */ + public short readShort() { + return (short) ((data[position++] & 0xFF) << 8 + | (data[position++] & 0xFF)); + } + + /** + * Reads the next two bytes as a signed value. + */ + public short readLittleEndianShort() { + return (short) ((data[position++] & 0xFF) | (data[position++] & 0xFF) << 8); + } + + /** + * Reads the next three bytes as an unsigned value. + */ + public int readUnsignedInt24() { + return (data[position++] & 0xFF) << 16 + | (data[position++] & 0xFF) << 8 + | (data[position++] & 0xFF); + } + + /** + * Reads the next three bytes as a signed value. + */ + public int readInt24() { + return ((data[position++] & 0xFF) << 24) >> 8 + | (data[position++] & 0xFF) << 8 + | (data[position++] & 0xFF); + } + + /** + * Reads the next three bytes as a signed value in little endian order. + */ + public int readLittleEndianInt24() { + return (data[position++] & 0xFF) + | (data[position++] & 0xFF) << 8 + | (data[position++] & 0xFF) << 16; + } + + /** + * Reads the next three bytes as an unsigned value in little endian order. + */ + public int readLittleEndianUnsignedInt24() { + return (data[position++] & 0xFF) + | (data[position++] & 0xFF) << 8 + | (data[position++] & 0xFF) << 16; + } + + /** + * Reads the next four bytes as an unsigned value. + */ + public long readUnsignedInt() { + return (data[position++] & 0xFFL) << 24 + | (data[position++] & 0xFFL) << 16 + | (data[position++] & 0xFFL) << 8 + | (data[position++] & 0xFFL); + } + + /** + * Reads the next four bytes as an unsigned value in little endian order. + */ + public long readLittleEndianUnsignedInt() { + return (data[position++] & 0xFFL) + | (data[position++] & 0xFFL) << 8 + | (data[position++] & 0xFFL) << 16 + | (data[position++] & 0xFFL) << 24; + } + + /** + * Reads the next four bytes as a signed value + */ + public int readInt() { + return (data[position++] & 0xFF) << 24 + | (data[position++] & 0xFF) << 16 + | (data[position++] & 0xFF) << 8 + | (data[position++] & 0xFF); + } + + /** + * Reads the next four bytes as a signed value in little endian order. + */ + public int readLittleEndianInt() { + return (data[position++] & 0xFF) + | (data[position++] & 0xFF) << 8 + | (data[position++] & 0xFF) << 16 + | (data[position++] & 0xFF) << 24; + } + + /** + * Reads the next eight bytes as a signed value. + */ + public long readLong() { + return (data[position++] & 0xFFL) << 56 + | (data[position++] & 0xFFL) << 48 + | (data[position++] & 0xFFL) << 40 + | (data[position++] & 0xFFL) << 32 + | (data[position++] & 0xFFL) << 24 + | (data[position++] & 0xFFL) << 16 + | (data[position++] & 0xFFL) << 8 + | (data[position++] & 0xFFL); + } + + /** + * Reads the next eight bytes as a signed value in little endian order. + */ + public long readLittleEndianLong() { + return (data[position++] & 0xFFL) + | (data[position++] & 0xFFL) << 8 + | (data[position++] & 0xFFL) << 16 + | (data[position++] & 0xFFL) << 24 + | (data[position++] & 0xFFL) << 32 + | (data[position++] & 0xFFL) << 40 + | (data[position++] & 0xFFL) << 48 + | (data[position++] & 0xFFL) << 56; + } + + /** + * Reads the next four bytes, returning the integer portion of the fixed point 16.16 integer. + */ + public int readUnsignedFixedPoint1616() { + int result = (data[position++] & 0xFF) << 8 + | (data[position++] & 0xFF); + position += 2; // Skip the non-integer portion. + return result; + } + + /** + * Reads a Synchsafe integer. + *

+ * Synchsafe integers keep the highest bit of every byte zeroed. A 32 bit synchsafe integer can + * store 28 bits of information. + * + * @return The parsed value. + */ + public int readSynchSafeInt() { + int b1 = readUnsignedByte(); + int b2 = readUnsignedByte(); + int b3 = readUnsignedByte(); + int b4 = readUnsignedByte(); + return (b1 << 21) | (b2 << 14) | (b3 << 7) | b4; + } + + /** + * Reads the next four bytes as an unsigned integer into an integer, if the top bit is a zero. + * + * @throws IllegalStateException Thrown if the top bit of the input data is set. + */ + public int readUnsignedIntToInt() { + int result = readInt(); + if (result < 0) { + throw new IllegalStateException("Top bit not zero: " + result); + } + return result; + } + + /** + * Reads the next four bytes as a little endian unsigned integer into an integer, if the top bit + * is a zero. + * + * @throws IllegalStateException Thrown if the top bit of the input data is set. + */ + public int readLittleEndianUnsignedIntToInt() { + int result = readLittleEndianInt(); + if (result < 0) { + throw new IllegalStateException("Top bit not zero: " + result); + } + return result; + } + + /** + * Reads the next eight bytes as an unsigned long into a long, if the top bit is a zero. + * + * @throws IllegalStateException Thrown if the top bit of the input data is set. + */ + public long readUnsignedLongToLong() { + long result = readLong(); + if (result < 0) { + throw new IllegalStateException("Top bit not zero: " + result); + } + return result; + } + + /** + * Reads the next four bytes as a 32-bit floating point value. + */ + public float readFloat() { + return Float.intBitsToFloat(readInt()); + } + + /** + * Reads the next eight bytes as a 64-bit floating point value. + */ + public double readDouble() { + return Double.longBitsToDouble(readLong()); + } + + /** + * Reads the next {@code length} bytes as UTF-8 characters. + * + * @param length The number of bytes to read. + * @return The string encoded by the bytes. + */ + public String readString(int length) { + return readString(length, Charset.forName(C.UTF8_NAME)); + } + + /** + * Reads the next {@code length} bytes as characters in the specified {@link Charset}. + * + * @param length The number of bytes to read. + * @param charset The character set of the encoded characters. + * @return The string encoded by the bytes in the specified character set. + */ + public String readString(int length, Charset charset) { + String result = new String(data, position, length, charset); + position += length; + return result; + } + + /** + * Reads the next {@code length} bytes as UTF-8 characters. A terminating NUL byte is discarded, + * if present. + * + * @param length The number of bytes to read. + * @return The string, not including any terminating NUL byte. + */ + public String readNullTerminatedString(int length) { + if (length == 0) { + return ""; + } + int stringLength = length; + int lastIndex = position + length - 1; + if (lastIndex < limit && data[lastIndex] == 0) { + stringLength--; + } + String result = Util.fromUtf8Bytes(data, position, stringLength); + position += length; + return result; + } + + /** + * Reads up to the next NUL byte (or the limit) as UTF-8 characters. + * + * @return The string not including any terminating NUL byte, or null if the end of the data has + * already been reached. + */ + @Nullable + public String readNullTerminatedString() { + if (bytesLeft() == 0) { + return null; + } + int stringLimit = position; + while (stringLimit < limit && data[stringLimit] != 0) { + stringLimit++; + } + String string = Util.fromUtf8Bytes(data, position, stringLimit - position); + position = stringLimit; + if (position < limit) { + position++; + } + return string; + } + + /** + * Reads a line of text. + * + *

A line is considered to be terminated by any one of a carriage return ('\r'), a line feed + * ('\n'), or a carriage return followed immediately by a line feed ('\r\n'). The system's default + * charset (UTF-8) is used. This method discards leading UTF-8 byte order marks, if present. + * + * @return The line not including any line-termination characters, or null if the end of the data + * has already been reached. + */ + @Nullable + public String readLine() { + if (bytesLeft() == 0) { + return null; + } + int lineLimit = position; + while (lineLimit < limit && !Util.isLinebreak(data[lineLimit])) { + lineLimit++; + } + if (lineLimit - position >= 3 && data[position] == (byte) 0xEF + && data[position + 1] == (byte) 0xBB && data[position + 2] == (byte) 0xBF) { + // There's a UTF-8 byte order mark at the start of the line. Discard it. + position += 3; + } + String line = Util.fromUtf8Bytes(data, position, lineLimit - position); + position = lineLimit; + if (position == limit) { + return line; + } + if (data[position] == '\r') { + position++; + if (position == limit) { + return line; + } + } + if (data[position] == '\n') { + position++; + } + return line; + } + + /** + * Reads a long value encoded by UTF-8 encoding + * + * @throws NumberFormatException if there is a problem with decoding + * @return Decoded long value + */ + public long readUtf8EncodedLong() { + int length = 0; + long value = data[position]; + // find the high most 0 bit + for (int j = 7; j >= 0; j--) { + if ((value & (1 << j)) == 0) { + if (j < 6) { + value &= (1 << j) - 1; + length = 7 - j; + } else if (j == 7) { + length = 1; + } + break; + } + } + if (length == 0) { + throw new NumberFormatException("Invalid UTF-8 sequence first byte: " + value); + } + for (int i = 1; i < length; i++) { + int x = data[position + i]; + if ((x & 0xC0) != 0x80) { // if the high most 0 bit not 7th + throw new NumberFormatException("Invalid UTF-8 sequence continuation byte: " + value); + } + value = (value << 6) | (x & 0x3F); + } + position += length; + return value; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ParsableNalUnitBitArray.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ParsableNalUnitBitArray.java new file mode 100644 index 0000000000..e73404fd91 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ParsableNalUnitBitArray.java @@ -0,0 +1,211 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +/** + * Wraps a byte array, providing methods that allow it to be read as a NAL unit bitstream. + *

+ * Whenever the byte sequence [0, 0, 3] appears in the wrapped byte array, it is treated as [0, 0] + * for all reading/skipping operations, which makes the bitstream appear to be unescaped. + */ +public final class ParsableNalUnitBitArray { + + private byte[] data; + private int byteLimit; + + // The byte offset is never equal to the offset of the 3rd byte in a subsequence [0, 0, 3]. + private int byteOffset; + private int bitOffset; + + /** + * @param data The data to wrap. + * @param offset The byte offset in {@code data} to start reading from. + * @param limit The byte offset of the end of the bitstream in {@code data}. + */ + @SuppressWarnings({"initialization.fields.uninitialized", "method.invocation.invalid"}) + public ParsableNalUnitBitArray(byte[] data, int offset, int limit) { + reset(data, offset, limit); + } + + /** + * Resets the wrapped data, limit and offset. + * + * @param data The data to wrap. + * @param offset The byte offset in {@code data} to start reading from. + * @param limit The byte offset of the end of the bitstream in {@code data}. + */ + public void reset(byte[] data, int offset, int limit) { + this.data = data; + byteOffset = offset; + byteLimit = limit; + bitOffset = 0; + assertValidOffset(); + } + + /** + * Skips a single bit. + */ + public void skipBit() { + if (++bitOffset == 8) { + bitOffset = 0; + byteOffset += shouldSkipByte(byteOffset + 1) ? 2 : 1; + } + assertValidOffset(); + } + + /** + * Skips bits and moves current reading position forward. + * + * @param numBits The number of bits to skip. + */ + public void skipBits(int numBits) { + int oldByteOffset = byteOffset; + int numBytes = numBits / 8; + byteOffset += numBytes; + bitOffset += numBits - (numBytes * 8); + if (bitOffset > 7) { + byteOffset++; + bitOffset -= 8; + } + for (int i = oldByteOffset + 1; i <= byteOffset; i++) { + if (shouldSkipByte(i)) { + // Skip the byte and move forward to check three bytes ahead. + byteOffset++; + i += 2; + } + } + assertValidOffset(); + } + + /** + * Returns whether it's possible to read {@code n} bits starting from the current offset. The + * offset is not modified. + * + * @param numBits The number of bits. + * @return Whether it is possible to read {@code n} bits. + */ + public boolean canReadBits(int numBits) { + int oldByteOffset = byteOffset; + int numBytes = numBits / 8; + int newByteOffset = byteOffset + numBytes; + int newBitOffset = bitOffset + numBits - (numBytes * 8); + if (newBitOffset > 7) { + newByteOffset++; + newBitOffset -= 8; + } + for (int i = oldByteOffset + 1; i <= newByteOffset && newByteOffset < byteLimit; i++) { + if (shouldSkipByte(i)) { + // Skip the byte and move forward to check three bytes ahead. + newByteOffset++; + i += 2; + } + } + return newByteOffset < byteLimit || (newByteOffset == byteLimit && newBitOffset == 0); + } + + /** + * Reads a single bit. + * + * @return Whether the bit is set. + */ + public boolean readBit() { + boolean returnValue = (data[byteOffset] & (0x80 >> bitOffset)) != 0; + skipBit(); + return returnValue; + } + + /** + * Reads up to 32 bits. + * + * @param numBits The number of bits to read. + * @return An integer whose bottom n bits hold the read data. + */ + public int readBits(int numBits) { + int returnValue = 0; + bitOffset += numBits; + while (bitOffset > 8) { + bitOffset -= 8; + returnValue |= (data[byteOffset] & 0xFF) << bitOffset; + byteOffset += shouldSkipByte(byteOffset + 1) ? 2 : 1; + } + returnValue |= (data[byteOffset] & 0xFF) >> (8 - bitOffset); + returnValue &= 0xFFFFFFFF >>> (32 - numBits); + if (bitOffset == 8) { + bitOffset = 0; + byteOffset += shouldSkipByte(byteOffset + 1) ? 2 : 1; + } + assertValidOffset(); + return returnValue; + } + + /** + * Returns whether it is possible to read an Exp-Golomb-coded integer starting from the current + * offset. The offset is not modified. + * + * @return Whether it is possible to read an Exp-Golomb-coded integer. + */ + public boolean canReadExpGolombCodedNum() { + int initialByteOffset = byteOffset; + int initialBitOffset = bitOffset; + int leadingZeros = 0; + while (byteOffset < byteLimit && !readBit()) { + leadingZeros++; + } + boolean hitLimit = byteOffset == byteLimit; + byteOffset = initialByteOffset; + bitOffset = initialBitOffset; + return !hitLimit && canReadBits(leadingZeros * 2 + 1); + } + + /** + * Reads an unsigned Exp-Golomb-coded format integer. + * + * @return The value of the parsed Exp-Golomb-coded integer. + */ + public int readUnsignedExpGolombCodedInt() { + return readExpGolombCodeNum(); + } + + /** + * Reads an signed Exp-Golomb-coded format integer. + * + * @return The value of the parsed Exp-Golomb-coded integer. + */ + public int readSignedExpGolombCodedInt() { + int codeNum = readExpGolombCodeNum(); + return ((codeNum % 2) == 0 ? -1 : 1) * ((codeNum + 1) / 2); + } + + private int readExpGolombCodeNum() { + int leadingZeros = 0; + while (!readBit()) { + leadingZeros++; + } + return (1 << leadingZeros) - 1 + (leadingZeros > 0 ? readBits(leadingZeros) : 0); + } + + private boolean shouldSkipByte(int offset) { + return 2 <= offset && offset < byteLimit && data[offset] == (byte) 0x03 + && data[offset - 2] == (byte) 0x00 && data[offset - 1] == (byte) 0x00; + } + + private void assertValidOffset() { + // It is fine for position to be at the end of the array, but no further. + Assertions.checkState(byteOffset >= 0 + && (byteOffset < byteLimit || (byteOffset == byteLimit && bitOffset == 0))); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Predicate.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Predicate.java new file mode 100644 index 0000000000..d91d9f7254 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Predicate.java @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +/** + * Determines a true or false value for a given input. + * + * @param The input type of the predicate. + */ +public interface Predicate { + + /** + * Evaluates an input. + * + * @param input The input to evaluate. + * @return The evaluated result. + */ + boolean evaluate(T input); + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/PriorityTaskManager.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/PriorityTaskManager.java new file mode 100644 index 0000000000..1067014b40 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/PriorityTaskManager.java @@ -0,0 +1,119 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import java.io.IOException; +import java.util.Collections; +import java.util.PriorityQueue; + +/** + * Allows tasks with associated priorities to control how they proceed relative to one another. + *

+ * A task should call {@link #add(int)} to register with the manager and {@link #remove(int)} to + * unregister. A registered task will prevent tasks of lower priority from proceeding, and should + * call {@link #proceed(int)}, {@link #proceedNonBlocking(int)} or {@link #proceedOrThrow(int)} each + * time it wishes to check whether it is itself allowed to proceed. + */ +public final class PriorityTaskManager { + + /** + * Thrown when task attempts to proceed when another registered task has a higher priority. + */ + public static class PriorityTooLowException extends IOException { + + public PriorityTooLowException(int priority, int highestPriority) { + super("Priority too low [priority=" + priority + ", highest=" + highestPriority + "]"); + } + + } + + private final Object lock = new Object(); + + // Guarded by lock. + private final PriorityQueue queue; + private int highestPriority; + + public PriorityTaskManager() { + queue = new PriorityQueue<>(10, Collections.reverseOrder()); + highestPriority = Integer.MIN_VALUE; + } + + /** + * Register a new task. The task must call {@link #remove(int)} when done. + * + * @param priority The priority of the task. Larger values indicate higher priorities. + */ + public void add(int priority) { + synchronized (lock) { + queue.add(priority); + highestPriority = Math.max(highestPriority, priority); + } + } + + /** + * Blocks until the task is allowed to proceed. + * + * @param priority The priority of the task. + * @throws InterruptedException If the thread is interrupted. + */ + public void proceed(int priority) throws InterruptedException { + synchronized (lock) { + while (highestPriority != priority) { + lock.wait(); + } + } + } + + /** + * A non-blocking variant of {@link #proceed(int)}. + * + * @param priority The priority of the task. + * @return Whether the task is allowed to proceed. + */ + public boolean proceedNonBlocking(int priority) { + synchronized (lock) { + return highestPriority == priority; + } + } + + /** + * A throwing variant of {@link #proceed(int)}. + * + * @param priority The priority of the task. + * @throws PriorityTooLowException If the task is not allowed to proceed. + */ + public void proceedOrThrow(int priority) throws PriorityTooLowException { + synchronized (lock) { + if (highestPriority != priority) { + throw new PriorityTooLowException(priority, highestPriority); + } + } + } + + /** + * Unregister a task. + * + * @param priority The priority of the task. + */ + public void remove(int priority) { + synchronized (lock) { + queue.remove(priority); + highestPriority = queue.isEmpty() ? Integer.MIN_VALUE : Util.castNonNull(queue.peek()); + lock.notifyAll(); + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/RepeatModeUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/RepeatModeUtil.java new file mode 100644 index 0000000000..c4964e6848 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/RepeatModeUtil.java @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Player; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** + * Util class for repeat mode handling. + */ +public final class RepeatModeUtil { + + // LINT.IfChange + /** + * Set of repeat toggle modes. Can be combined using bit-wise operations. Possible flag values are + * {@link #REPEAT_TOGGLE_MODE_NONE}, {@link #REPEAT_TOGGLE_MODE_ONE} and {@link + * #REPEAT_TOGGLE_MODE_ALL}. + */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef( + flag = true, + value = {REPEAT_TOGGLE_MODE_NONE, REPEAT_TOGGLE_MODE_ONE, REPEAT_TOGGLE_MODE_ALL}) + public @interface RepeatToggleModes {} + /** + * All repeat mode buttons disabled. + */ + public static final int REPEAT_TOGGLE_MODE_NONE = 0; + /** + * "Repeat One" button enabled. + */ + public static final int REPEAT_TOGGLE_MODE_ONE = 1; + /** "Repeat All" button enabled. */ + public static final int REPEAT_TOGGLE_MODE_ALL = 1 << 1; // 2 + // LINT.ThenChange(../../../../../../../../../ui/src/main/res/values/attrs.xml) + + private RepeatModeUtil() { + // Prevent instantiation. + } + + /** + * Gets the next repeat mode out of {@code enabledModes} starting from {@code currentMode}. + * + * @param currentMode The current repeat mode. + * @param enabledModes Bitmask of enabled modes. + * @return The next repeat mode. + */ + public static @Player.RepeatMode int getNextRepeatMode(@Player.RepeatMode int currentMode, + int enabledModes) { + for (int offset = 1; offset <= 2; offset++) { + @Player.RepeatMode int proposedMode = (currentMode + offset) % 3; + if (isRepeatModeEnabled(proposedMode, enabledModes)) { + return proposedMode; + } + } + return currentMode; + } + + /** + * Verifies whether a given {@code repeatMode} is enabled in the bitmask {@code enabledModes}. + * + * @param repeatMode The mode to check. + * @param enabledModes The bitmask representing the enabled modes. + * @return {@code true} if enabled. + */ + public static boolean isRepeatModeEnabled(@Player.RepeatMode int repeatMode, int enabledModes) { + switch (repeatMode) { + case Player.REPEAT_MODE_OFF: + return true; + case Player.REPEAT_MODE_ONE: + return (enabledModes & REPEAT_TOGGLE_MODE_ONE) != 0; + case Player.REPEAT_MODE_ALL: + return (enabledModes & REPEAT_TOGGLE_MODE_ALL) != 0; + default: + return false; + } + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ReusableBufferedOutputStream.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ReusableBufferedOutputStream.java new file mode 100644 index 0000000000..cd38892be0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/ReusableBufferedOutputStream.java @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import java.io.BufferedOutputStream; +import java.io.IOException; +import java.io.OutputStream; + +/** + * This is a subclass of {@link BufferedOutputStream} with a {@link #reset(OutputStream)} method + * that allows an instance to be re-used with another underlying output stream. + */ +public final class ReusableBufferedOutputStream extends BufferedOutputStream { + + private boolean closed; + + public ReusableBufferedOutputStream(OutputStream out) { + super(out); + } + + public ReusableBufferedOutputStream(OutputStream out, int size) { + super(out, size); + } + + @Override + public void close() throws IOException { + closed = true; + + Throwable thrown = null; + try { + flush(); + } catch (Throwable e) { + thrown = e; + } + try { + out.close(); + } catch (Throwable e) { + if (thrown == null) { + thrown = e; + } + } + if (thrown != null) { + Util.sneakyThrow(thrown); + } + } + + /** + * Resets this stream and uses the given output stream for writing. This stream must be closed + * before resetting. + * + * @param out New output stream to be used for writing. + * @throws IllegalStateException If the stream isn't closed. + */ + public void reset(OutputStream out) { + Assertions.checkState(closed); + this.out = out; + count = 0; + closed = false; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/SlidingPercentile.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/SlidingPercentile.java new file mode 100644 index 0000000000..9048de2f34 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/SlidingPercentile.java @@ -0,0 +1,158 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.Comparator; + +/** + * Calculate any percentile over a sliding window of weighted values. A maximum weight is + * configured. Once the total weight of the values reaches the maximum weight, the oldest value is + * reduced in weight until it reaches zero and is removed. This maintains a constant total weight, + * equal to the maximum allowed, at the steady state. + *

+ * This class can be used for bandwidth estimation based on a sliding window of past transfer rate + * observations. This is an alternative to sliding mean and exponential averaging which suffer from + * susceptibility to outliers and slow adaptation to step functions. + * + * @see Wiki: Moving average + * @see Wiki: Selection algorithm + */ +public class SlidingPercentile { + + // Orderings. + private static final Comparator INDEX_COMPARATOR = (a, b) -> a.index - b.index; + private static final Comparator VALUE_COMPARATOR = + (a, b) -> Float.compare(a.value, b.value); + + private static final int SORT_ORDER_NONE = -1; + private static final int SORT_ORDER_BY_VALUE = 0; + private static final int SORT_ORDER_BY_INDEX = 1; + + private static final int MAX_RECYCLED_SAMPLES = 5; + + private final int maxWeight; + private final ArrayList samples; + + private final Sample[] recycledSamples; + + private int currentSortOrder; + private int nextSampleIndex; + private int totalWeight; + private int recycledSampleCount; + + /** + * @param maxWeight The maximum weight. + */ + public SlidingPercentile(int maxWeight) { + this.maxWeight = maxWeight; + recycledSamples = new Sample[MAX_RECYCLED_SAMPLES]; + samples = new ArrayList<>(); + currentSortOrder = SORT_ORDER_NONE; + } + + /** Resets the sliding percentile. */ + public void reset() { + samples.clear(); + currentSortOrder = SORT_ORDER_NONE; + nextSampleIndex = 0; + totalWeight = 0; + } + + /** + * Adds a new weighted value. + * + * @param weight The weight of the new observation. + * @param value The value of the new observation. + */ + public void addSample(int weight, float value) { + ensureSortedByIndex(); + + Sample newSample = recycledSampleCount > 0 ? recycledSamples[--recycledSampleCount] + : new Sample(); + newSample.index = nextSampleIndex++; + newSample.weight = weight; + newSample.value = value; + samples.add(newSample); + totalWeight += weight; + + while (totalWeight > maxWeight) { + int excessWeight = totalWeight - maxWeight; + Sample oldestSample = samples.get(0); + if (oldestSample.weight <= excessWeight) { + totalWeight -= oldestSample.weight; + samples.remove(0); + if (recycledSampleCount < MAX_RECYCLED_SAMPLES) { + recycledSamples[recycledSampleCount++] = oldestSample; + } + } else { + oldestSample.weight -= excessWeight; + totalWeight -= excessWeight; + } + } + } + + /** + * Computes a percentile by integration. + * + * @param percentile The desired percentile, expressed as a fraction in the range (0,1]. + * @return The requested percentile value or {@link Float#NaN} if no samples have been added. + */ + public float getPercentile(float percentile) { + ensureSortedByValue(); + float desiredWeight = percentile * totalWeight; + int accumulatedWeight = 0; + for (int i = 0; i < samples.size(); i++) { + Sample currentSample = samples.get(i); + accumulatedWeight += currentSample.weight; + if (accumulatedWeight >= desiredWeight) { + return currentSample.value; + } + } + // Clamp to maximum value or NaN if no values. + return samples.isEmpty() ? Float.NaN : samples.get(samples.size() - 1).value; + } + + /** + * Sorts the samples by index. + */ + private void ensureSortedByIndex() { + if (currentSortOrder != SORT_ORDER_BY_INDEX) { + Collections.sort(samples, INDEX_COMPARATOR); + currentSortOrder = SORT_ORDER_BY_INDEX; + } + } + + /** + * Sorts the samples by value. + */ + private void ensureSortedByValue() { + if (currentSortOrder != SORT_ORDER_BY_VALUE) { + Collections.sort(samples, VALUE_COMPARATOR); + currentSortOrder = SORT_ORDER_BY_VALUE; + } + } + + private static class Sample { + + public int index; + public int weight; + public float value; + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/StandaloneMediaClock.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/StandaloneMediaClock.java new file mode 100644 index 0000000000..f72867694d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/StandaloneMediaClock.java @@ -0,0 +1,104 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlaybackParameters; + +/** + * A {@link MediaClock} whose position advances with real time based on the playback parameters when + * started. + */ +public final class StandaloneMediaClock implements MediaClock { + + private final Clock clock; + + private boolean started; + private long baseUs; + private long baseElapsedMs; + private PlaybackParameters playbackParameters; + + /** + * Creates a new standalone media clock using the given {@link Clock} implementation. + * + * @param clock A {@link Clock}. + */ + public StandaloneMediaClock(Clock clock) { + this.clock = clock; + this.playbackParameters = PlaybackParameters.DEFAULT; + } + + /** + * Starts the clock. Does nothing if the clock is already started. + */ + public void start() { + if (!started) { + baseElapsedMs = clock.elapsedRealtime(); + started = true; + } + } + + /** + * Stops the clock. Does nothing if the clock is already stopped. + */ + public void stop() { + if (started) { + resetPosition(getPositionUs()); + started = false; + } + } + + /** + * Resets the clock's position. + * + * @param positionUs The position to set in microseconds. + */ + public void resetPosition(long positionUs) { + baseUs = positionUs; + if (started) { + baseElapsedMs = clock.elapsedRealtime(); + } + } + + @Override + public long getPositionUs() { + long positionUs = baseUs; + if (started) { + long elapsedSinceBaseMs = clock.elapsedRealtime() - baseElapsedMs; + if (playbackParameters.speed == 1f) { + positionUs += C.msToUs(elapsedSinceBaseMs); + } else { + positionUs += playbackParameters.getMediaTimeUsForPlayoutTimeMs(elapsedSinceBaseMs); + } + } + return positionUs; + } + + @Override + public void setPlaybackParameters(PlaybackParameters playbackParameters) { + // Store the current position as the new base, in case the playback speed has changed. + if (started) { + resetPosition(getPositionUs()); + } + this.playbackParameters = playbackParameters; + } + + @Override + public PlaybackParameters getPlaybackParameters() { + return playbackParameters; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/SystemClock.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/SystemClock.java new file mode 100644 index 0000000000..a2f915866d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/SystemClock.java @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.os.Handler; +import android.os.Handler.Callback; +import android.os.Looper; +import androidx.annotation.Nullable; + +/** + * The standard implementation of {@link Clock}. + */ +/* package */ final class SystemClock implements Clock { + + @Override + public long elapsedRealtime() { + return android.os.SystemClock.elapsedRealtime(); + } + + @Override + public long uptimeMillis() { + return android.os.SystemClock.uptimeMillis(); + } + + @Override + public void sleep(long sleepTimeMs) { + android.os.SystemClock.sleep(sleepTimeMs); + } + + @Override + public HandlerWrapper createHandler(Looper looper, @Nullable Callback callback) { + return new SystemHandlerWrapper(new Handler(looper, callback)); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/SystemHandlerWrapper.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/SystemHandlerWrapper.java new file mode 100644 index 0000000000..e69a24cc10 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/SystemHandlerWrapper.java @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.os.Looper; +import android.os.Message; +import androidx.annotation.Nullable; + +/** The standard implementation of {@link HandlerWrapper}. */ +/* package */ final class SystemHandlerWrapper implements HandlerWrapper { + + private final android.os.Handler handler; + + public SystemHandlerWrapper(android.os.Handler handler) { + this.handler = handler; + } + + @Override + public Looper getLooper() { + return handler.getLooper(); + } + + @Override + public Message obtainMessage(int what) { + return handler.obtainMessage(what); + } + + @Override + public Message obtainMessage(int what, @Nullable Object obj) { + return handler.obtainMessage(what, obj); + } + + @Override + public Message obtainMessage(int what, int arg1, int arg2) { + return handler.obtainMessage(what, arg1, arg2); + } + + @Override + public Message obtainMessage(int what, int arg1, int arg2, @Nullable Object obj) { + return handler.obtainMessage(what, arg1, arg2, obj); + } + + @Override + public boolean sendEmptyMessage(int what) { + return handler.sendEmptyMessage(what); + } + + @Override + public boolean sendEmptyMessageAtTime(int what, long uptimeMs) { + return handler.sendEmptyMessageAtTime(what, uptimeMs); + } + + @Override + public void removeMessages(int what) { + handler.removeMessages(what); + } + + @Override + public void removeCallbacksAndMessages(@Nullable Object token) { + handler.removeCallbacksAndMessages(token); + } + + @Override + public boolean post(Runnable runnable) { + return handler.post(runnable); + } + + @Override + public boolean postDelayed(Runnable runnable, long delayMs) { + return handler.postDelayed(runnable, delayMs); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/TimedValueQueue.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/TimedValueQueue.java new file mode 100644 index 0000000000..396e50dcff --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/TimedValueQueue.java @@ -0,0 +1,161 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import androidx.annotation.Nullable; +import java.util.Arrays; +import org.checkerframework.checker.nullness.compatqual.NullableType; + +/** A utility class to keep a queue of values with timestamps. This class is thread safe. */ +public final class TimedValueQueue { + private static final int INITIAL_BUFFER_SIZE = 10; + + // Looping buffer for timestamps and values + private long[] timestamps; + private @NullableType V[] values; + private int first; + private int size; + + public TimedValueQueue() { + this(INITIAL_BUFFER_SIZE); + } + + /** Creates a TimedValueBuffer with the given initial buffer size. */ + public TimedValueQueue(int initialBufferSize) { + timestamps = new long[initialBufferSize]; + values = newArray(initialBufferSize); + } + + /** + * Associates the specified value with the specified timestamp. All new values should have a + * greater timestamp than the previously added values. Otherwise all values are removed before + * adding the new one. + */ + public synchronized void add(long timestamp, V value) { + clearBufferOnTimeDiscontinuity(timestamp); + doubleCapacityIfFull(); + addUnchecked(timestamp, value); + } + + /** Removes all of the values. */ + public synchronized void clear() { + first = 0; + size = 0; + Arrays.fill(values, null); + } + + /** Returns number of the values buffered. */ + public synchronized int size() { + return size; + } + + /** + * Returns the value with the greatest timestamp which is less than or equal to the given + * timestamp. Removes all older values and the returned one from the buffer. + * + * @param timestamp The timestamp value. + * @return The value with the greatest timestamp which is less than or equal to the given + * timestamp or null if there is no such value. + * @see #poll(long) + */ + public synchronized @Nullable V pollFloor(long timestamp) { + return poll(timestamp, /* onlyOlder= */ true); + } + + /** + * Returns the value with the closest timestamp to the given timestamp. Removes all older values + * including the returned one from the buffer. + * + * @param timestamp The timestamp value. + * @return The value with the closest timestamp or null if the buffer is empty. + * @see #pollFloor(long) + */ + public synchronized @Nullable V poll(long timestamp) { + return poll(timestamp, /* onlyOlder= */ false); + } + + /** + * Returns the value with the closest timestamp to the given timestamp. Removes all older values + * including the returned one from the buffer. + * + * @param timestamp The timestamp value. + * @param onlyOlder Whether this method can return a new value in case its timestamp value is + * closest to {@code timestamp}. + * @return The value with the closest timestamp or null if the buffer is empty or there is no + * older value and {@code onlyOlder} is true. + */ + @Nullable + private V poll(long timestamp, boolean onlyOlder) { + V value = null; + long previousTimeDiff = Long.MAX_VALUE; + while (size > 0) { + long timeDiff = timestamp - timestamps[first]; + if (timeDiff < 0 && (onlyOlder || -timeDiff >= previousTimeDiff)) { + break; + } + previousTimeDiff = timeDiff; + value = values[first]; + values[first] = null; + first = (first + 1) % values.length; + size--; + } + return value; + } + + private void clearBufferOnTimeDiscontinuity(long timestamp) { + if (size > 0) { + int last = (first + size - 1) % values.length; + if (timestamp <= timestamps[last]) { + clear(); + } + } + } + + private void doubleCapacityIfFull() { + int capacity = values.length; + if (size < capacity) { + return; + } + int newCapacity = capacity * 2; + long[] newTimestamps = new long[newCapacity]; + V[] newValues = newArray(newCapacity); + // Reset the loop starting index to 0 while coping to the new buffer. + // First copy the values from 'first' index to the end of original array. + int length = capacity - first; + System.arraycopy(timestamps, first, newTimestamps, 0, length); + System.arraycopy(values, first, newValues, 0, length); + // Then the values from index 0 to 'first' index. + if (first > 0) { + System.arraycopy(timestamps, 0, newTimestamps, length, first); + System.arraycopy(values, 0, newValues, length, first); + } + timestamps = newTimestamps; + values = newValues; + first = 0; + } + + private void addUnchecked(long timestamp, V value) { + int next = (first + size) % values.length; + timestamps[next] = timestamp; + values[next] = value; + size++; + } + + @SuppressWarnings("unchecked") + private static V[] newArray(int length) { + return (V[]) new Object[length]; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/TimestampAdjuster.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/TimestampAdjuster.java new file mode 100644 index 0000000000..e824251282 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/TimestampAdjuster.java @@ -0,0 +1,186 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; + +/** + * Offsets timestamps according to an initial sample timestamp offset. MPEG-2 TS timestamps scaling + * and adjustment is supported, taking into account timestamp rollover. + */ +public final class TimestampAdjuster { + + /** + * A special {@code firstSampleTimestampUs} value indicating that presentation timestamps should + * not be offset. + */ + public static final long DO_NOT_OFFSET = Long.MAX_VALUE; + + /** + * The value one greater than the largest representable (33 bit) MPEG-2 TS 90 kHz clock + * presentation timestamp. + */ + private static final long MAX_PTS_PLUS_ONE = 0x200000000L; + + private long firstSampleTimestampUs; + private long timestampOffsetUs; + + // Volatile to allow isInitialized to be called on a different thread to adjustSampleTimestamp. + private volatile long lastSampleTimestampUs; + + /** + * @param firstSampleTimestampUs See {@link #setFirstSampleTimestampUs(long)}. + */ + public TimestampAdjuster(long firstSampleTimestampUs) { + lastSampleTimestampUs = C.TIME_UNSET; + setFirstSampleTimestampUs(firstSampleTimestampUs); + } + + /** + * Sets the desired result of the first call to {@link #adjustSampleTimestamp(long)}. Can only be + * called before any timestamps have been adjusted. + * + * @param firstSampleTimestampUs The first adjusted sample timestamp in microseconds, or + * {@link #DO_NOT_OFFSET} if presentation timestamps should not be offset. + */ + public synchronized void setFirstSampleTimestampUs(long firstSampleTimestampUs) { + Assertions.checkState(lastSampleTimestampUs == C.TIME_UNSET); + this.firstSampleTimestampUs = firstSampleTimestampUs; + } + + /** Returns the last value passed to {@link #setFirstSampleTimestampUs(long)}. */ + public long getFirstSampleTimestampUs() { + return firstSampleTimestampUs; + } + + /** + * Returns the last value obtained from {@link #adjustSampleTimestamp}. If {@link + * #adjustSampleTimestamp} has not been called, returns the result of calling {@link + * #getFirstSampleTimestampUs()}. If this value is {@link #DO_NOT_OFFSET}, returns {@link + * C#TIME_UNSET}. + */ + public long getLastAdjustedTimestampUs() { + return lastSampleTimestampUs != C.TIME_UNSET + ? (lastSampleTimestampUs + timestampOffsetUs) + : firstSampleTimestampUs != DO_NOT_OFFSET ? firstSampleTimestampUs : C.TIME_UNSET; + } + + /** + * Returns the offset between the input of {@link #adjustSampleTimestamp(long)} and its output. + * If {@link #DO_NOT_OFFSET} was provided to the constructor, 0 is returned. If the timestamp + * adjuster is yet not initialized, {@link C#TIME_UNSET} is returned. + * + * @return The offset between {@link #adjustSampleTimestamp(long)}'s input and output. + * {@link C#TIME_UNSET} if the adjuster is not yet initialized and 0 if timestamps should not + * be offset. + */ + public long getTimestampOffsetUs() { + return firstSampleTimestampUs == DO_NOT_OFFSET + ? 0 + : lastSampleTimestampUs == C.TIME_UNSET ? C.TIME_UNSET : timestampOffsetUs; + } + + /** + * Resets the instance to its initial state. + */ + public void reset() { + lastSampleTimestampUs = C.TIME_UNSET; + } + + /** + * Scales and offsets an MPEG-2 TS presentation timestamp considering wraparound. + * + * @param pts90Khz A 90 kHz clock MPEG-2 TS presentation timestamp. + * @return The adjusted timestamp in microseconds. + */ + public long adjustTsTimestamp(long pts90Khz) { + if (pts90Khz == C.TIME_UNSET) { + return C.TIME_UNSET; + } + if (lastSampleTimestampUs != C.TIME_UNSET) { + // The wrap count for the current PTS may be closestWrapCount or (closestWrapCount - 1), + // and we need to snap to the one closest to lastSampleTimestampUs. + long lastPts = usToPts(lastSampleTimestampUs); + long closestWrapCount = (lastPts + (MAX_PTS_PLUS_ONE / 2)) / MAX_PTS_PLUS_ONE; + long ptsWrapBelow = pts90Khz + (MAX_PTS_PLUS_ONE * (closestWrapCount - 1)); + long ptsWrapAbove = pts90Khz + (MAX_PTS_PLUS_ONE * closestWrapCount); + pts90Khz = + Math.abs(ptsWrapBelow - lastPts) < Math.abs(ptsWrapAbove - lastPts) + ? ptsWrapBelow + : ptsWrapAbove; + } + return adjustSampleTimestamp(ptsToUs(pts90Khz)); + } + + /** + * Offsets a timestamp in microseconds. + * + * @param timeUs The timestamp to adjust in microseconds. + * @return The adjusted timestamp in microseconds. + */ + public long adjustSampleTimestamp(long timeUs) { + if (timeUs == C.TIME_UNSET) { + return C.TIME_UNSET; + } + // Record the adjusted PTS to adjust for wraparound next time. + if (lastSampleTimestampUs != C.TIME_UNSET) { + lastSampleTimestampUs = timeUs; + } else { + if (firstSampleTimestampUs != DO_NOT_OFFSET) { + // Calculate the timestamp offset. + timestampOffsetUs = firstSampleTimestampUs - timeUs; + } + synchronized (this) { + lastSampleTimestampUs = timeUs; + // Notify threads waiting for this adjuster to be initialized. + notifyAll(); + } + } + return timeUs + timestampOffsetUs; + } + + /** + * Blocks the calling thread until this adjuster is initialized. + * + * @throws InterruptedException If the thread was interrupted. + */ + public synchronized void waitUntilInitialized() throws InterruptedException { + while (lastSampleTimestampUs == C.TIME_UNSET) { + wait(); + } + } + + /** + * Converts a 90 kHz clock timestamp to a timestamp in microseconds. + * + * @param pts A 90 kHz clock timestamp. + * @return The corresponding value in microseconds. + */ + public static long ptsToUs(long pts) { + return (pts * C.MICROS_PER_SECOND) / 90000; + } + + /** + * Converts a timestamp in microseconds to a 90 kHz clock timestamp. + * + * @param us A value in microseconds. + * @return The corresponding value as a 90 kHz clock timestamp. + */ + public static long usToPts(long us) { + return (us * 90000) / C.MICROS_PER_SECOND; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/TraceUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/TraceUtil.java new file mode 100644 index 0000000000..5f53c3130d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/TraceUtil.java @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.annotation.TargetApi; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayerLibraryInfo; + +/** + * Calls through to {@link android.os.Trace} methods on supported API levels. + */ +public final class TraceUtil { + + private TraceUtil() {} + + /** + * Writes a trace message to indicate that a given section of code has begun. + * + * @see android.os.Trace#beginSection(String) + * @param sectionName The name of the code section to appear in the trace. This may be at most 127 + * Unicode code units long. + */ + public static void beginSection(String sectionName) { + if (ExoPlayerLibraryInfo.TRACE_ENABLED && Util.SDK_INT >= 18) { + beginSectionV18(sectionName); + } + } + + /** + * Writes a trace message to indicate that a given section of code has ended. + * + * @see android.os.Trace#endSection() + */ + public static void endSection() { + if (ExoPlayerLibraryInfo.TRACE_ENABLED && Util.SDK_INT >= 18) { + endSectionV18(); + } + } + + @TargetApi(18) + private static void beginSectionV18(String sectionName) { + android.os.Trace.beginSection(sectionName); + } + + @TargetApi(18) + private static void endSectionV18() { + android.os.Trace.endSection(); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/UriUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/UriUtil.java new file mode 100644 index 0000000000..03b5d26a51 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/UriUtil.java @@ -0,0 +1,279 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import android.net.Uri; +import android.text.TextUtils; +import androidx.annotation.Nullable; + +/** + * Utility methods for manipulating URIs. + */ +public final class UriUtil { + + /** + * The length of arrays returned by {@link #getUriIndices(String)}. + */ + private static final int INDEX_COUNT = 4; + /** + * An index into an array returned by {@link #getUriIndices(String)}. + *

+ * The value at this position in the array is the index of the ':' after the scheme. Equals -1 if + * the URI is a relative reference (no scheme). The hier-part starts at (schemeColon + 1), + * including when the URI has no scheme. + */ + private static final int SCHEME_COLON = 0; + /** + * An index into an array returned by {@link #getUriIndices(String)}. + *

+ * The value at this position in the array is the index of the path part. Equals (schemeColon + 1) + * if no authority part, (schemeColon + 3) if the authority part consists of just "//", and + * (query) if no path part. The characters starting at this index can be "//" only if the + * authority part is non-empty (in this case the double-slash means the first segment is empty). + */ + private static final int PATH = 1; + /** + * An index into an array returned by {@link #getUriIndices(String)}. + *

+ * The value at this position in the array is the index of the query part, including the '?' + * before the query. Equals fragment if no query part, and (fragment - 1) if the query part is a + * single '?' with no data. + */ + private static final int QUERY = 2; + /** + * An index into an array returned by {@link #getUriIndices(String)}. + *

+ * The value at this position in the array is the index of the fragment part, including the '#' + * before the fragment. Equal to the length of the URI if no fragment part, and (length - 1) if + * the fragment part is a single '#' with no data. + */ + private static final int FRAGMENT = 3; + + private UriUtil() {} + + /** + * Like {@link #resolve(String, String)}, but returns a {@link Uri} instead of a {@link String}. + * + * @param baseUri The base URI. + * @param referenceUri The reference URI to resolve. + */ + public static Uri resolveToUri(@Nullable String baseUri, @Nullable String referenceUri) { + return Uri.parse(resolve(baseUri, referenceUri)); + } + + /** + * Performs relative resolution of a {@code referenceUri} with respect to a {@code baseUri}. + * + *

The resolution is performed as specified by RFC-3986. + * + * @param baseUri The base URI. + * @param referenceUri The reference URI to resolve. + */ + public static String resolve(@Nullable String baseUri, @Nullable String referenceUri) { + StringBuilder uri = new StringBuilder(); + + // Map null onto empty string, to make the following logic simpler. + baseUri = baseUri == null ? "" : baseUri; + referenceUri = referenceUri == null ? "" : referenceUri; + + int[] refIndices = getUriIndices(referenceUri); + if (refIndices[SCHEME_COLON] != -1) { + // The reference is absolute. The target Uri is the reference. + uri.append(referenceUri); + removeDotSegments(uri, refIndices[PATH], refIndices[QUERY]); + return uri.toString(); + } + + int[] baseIndices = getUriIndices(baseUri); + if (refIndices[FRAGMENT] == 0) { + // The reference is empty or contains just the fragment part, then the target Uri is the + // concatenation of the base Uri without its fragment, and the reference. + return uri.append(baseUri, 0, baseIndices[FRAGMENT]).append(referenceUri).toString(); + } + + if (refIndices[QUERY] == 0) { + // The reference starts with the query part. The target is the base up to (but excluding) the + // query, plus the reference. + return uri.append(baseUri, 0, baseIndices[QUERY]).append(referenceUri).toString(); + } + + if (refIndices[PATH] != 0) { + // The reference has authority. The target is the base scheme plus the reference. + int baseLimit = baseIndices[SCHEME_COLON] + 1; + uri.append(baseUri, 0, baseLimit).append(referenceUri); + return removeDotSegments(uri, baseLimit + refIndices[PATH], baseLimit + refIndices[QUERY]); + } + + if (referenceUri.charAt(refIndices[PATH]) == '/') { + // The reference path is rooted. The target is the base scheme and authority (if any), plus + // the reference. + uri.append(baseUri, 0, baseIndices[PATH]).append(referenceUri); + return removeDotSegments(uri, baseIndices[PATH], baseIndices[PATH] + refIndices[QUERY]); + } + + // The target Uri is the concatenation of the base Uri up to (but excluding) the last segment, + // and the reference. This can be split into 2 cases: + if (baseIndices[SCHEME_COLON] + 2 < baseIndices[PATH] + && baseIndices[PATH] == baseIndices[QUERY]) { + // Case 1: The base hier-part is just the authority, with an empty path. An additional '/' is + // needed after the authority, before appending the reference. + uri.append(baseUri, 0, baseIndices[PATH]).append('/').append(referenceUri); + return removeDotSegments(uri, baseIndices[PATH], baseIndices[PATH] + refIndices[QUERY] + 1); + } else { + // Case 2: Otherwise, find the last '/' in the base hier-part and append the reference after + // it. If base hier-part has no '/', it could only mean that it is completely empty or + // contains only one segment, in which case the whole hier-part is excluded and the reference + // is appended right after the base scheme colon without an added '/'. + int lastSlashIndex = baseUri.lastIndexOf('/', baseIndices[QUERY] - 1); + int baseLimit = lastSlashIndex == -1 ? baseIndices[PATH] : lastSlashIndex + 1; + uri.append(baseUri, 0, baseLimit).append(referenceUri); + return removeDotSegments(uri, baseIndices[PATH], baseLimit + refIndices[QUERY]); + } + } + + /** + * Removes query parameter from an Uri, if present. + * + * @param uri The uri. + * @param queryParameterName The name of the query parameter. + * @return The uri without the query parameter. + */ + public static Uri removeQueryParameter(Uri uri, String queryParameterName) { + Uri.Builder builder = uri.buildUpon(); + builder.clearQuery(); + for (String key : uri.getQueryParameterNames()) { + if (!key.equals(queryParameterName)) { + for (String value : uri.getQueryParameters(key)) { + builder.appendQueryParameter(key, value); + } + } + } + return builder.build(); + } + + /** + * Removes dot segments from the path of a URI. + * + * @param uri A {@link StringBuilder} containing the URI. + * @param offset The index of the start of the path in {@code uri}. + * @param limit The limit (exclusive) of the path in {@code uri}. + */ + private static String removeDotSegments(StringBuilder uri, int offset, int limit) { + if (offset >= limit) { + // Nothing to do. + return uri.toString(); + } + if (uri.charAt(offset) == '/') { + // If the path starts with a /, always retain it. + offset++; + } + // The first character of the current path segment. + int segmentStart = offset; + int i = offset; + while (i <= limit) { + int nextSegmentStart; + if (i == limit) { + nextSegmentStart = i; + } else if (uri.charAt(i) == '/') { + nextSegmentStart = i + 1; + } else { + i++; + continue; + } + // We've encountered the end of a segment or the end of the path. If the final segment was + // "." or "..", remove the appropriate segments of the path. + if (i == segmentStart + 1 && uri.charAt(segmentStart) == '.') { + // Given "abc/def/./ghi", remove "./" to get "abc/def/ghi". + uri.delete(segmentStart, nextSegmentStart); + limit -= nextSegmentStart - segmentStart; + i = segmentStart; + } else if (i == segmentStart + 2 && uri.charAt(segmentStart) == '.' + && uri.charAt(segmentStart + 1) == '.') { + // Given "abc/def/../ghi", remove "def/../" to get "abc/ghi". + int prevSegmentStart = uri.lastIndexOf("/", segmentStart - 2) + 1; + int removeFrom = prevSegmentStart > offset ? prevSegmentStart : offset; + uri.delete(removeFrom, nextSegmentStart); + limit -= nextSegmentStart - removeFrom; + segmentStart = prevSegmentStart; + i = prevSegmentStart; + } else { + i++; + segmentStart = i; + } + } + return uri.toString(); + } + + /** + * Calculates indices of the constituent components of a URI. + * + * @param uriString The URI as a string. + * @return The corresponding indices. + */ + private static int[] getUriIndices(String uriString) { + int[] indices = new int[INDEX_COUNT]; + if (TextUtils.isEmpty(uriString)) { + indices[SCHEME_COLON] = -1; + return indices; + } + + // Determine outer structure from right to left. + // Uri = scheme ":" hier-part [ "?" query ] [ "#" fragment ] + int length = uriString.length(); + int fragmentIndex = uriString.indexOf('#'); + if (fragmentIndex == -1) { + fragmentIndex = length; + } + int queryIndex = uriString.indexOf('?'); + if (queryIndex == -1 || queryIndex > fragmentIndex) { + // '#' before '?': '?' is within the fragment. + queryIndex = fragmentIndex; + } + // Slashes are allowed only in hier-part so any colon after the first slash is part of the + // hier-part, not the scheme colon separator. + int schemeIndexLimit = uriString.indexOf('/'); + if (schemeIndexLimit == -1 || schemeIndexLimit > queryIndex) { + schemeIndexLimit = queryIndex; + } + int schemeIndex = uriString.indexOf(':'); + if (schemeIndex > schemeIndexLimit) { + // '/' before ':' + schemeIndex = -1; + } + + // Determine hier-part structure: hier-part = "//" authority path / path + // This block can also cope with schemeIndex == -1. + boolean hasAuthority = schemeIndex + 2 < queryIndex + && uriString.charAt(schemeIndex + 1) == '/' + && uriString.charAt(schemeIndex + 2) == '/'; + int pathIndex; + if (hasAuthority) { + pathIndex = uriString.indexOf('/', schemeIndex + 3); // find first '/' after "://" + if (pathIndex == -1 || pathIndex > queryIndex) { + pathIndex = queryIndex; + } + } else { + pathIndex = schemeIndex + 1; + } + + indices[SCHEME_COLON] = schemeIndex; + indices[PATH] = pathIndex; + indices[QUERY] = queryIndex; + indices[FRAGMENT] = fragmentIndex; + return indices; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Util.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Util.java new file mode 100644 index 0000000000..4d7d8014dd --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/Util.java @@ -0,0 +1,2298 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import static android.content.Context.UI_MODE_SERVICE; + +import android.Manifest.permission; +import android.annotation.SuppressLint; +import android.annotation.TargetApi; +import android.app.Activity; +import android.app.UiModeManager; +import android.content.ComponentName; +import android.content.Context; +import android.content.Intent; +import android.content.pm.PackageInfo; +import android.content.pm.PackageManager; +import android.content.pm.PackageManager.NameNotFoundException; +import android.content.res.Configuration; +import android.content.res.Resources; +import android.graphics.Point; +import android.media.AudioFormat; +import android.net.ConnectivityManager; +import android.net.NetworkInfo; +import android.net.Uri; +import android.os.Build; +import android.os.Handler; +import android.os.Looper; +import android.os.Parcel; +import android.security.NetworkSecurityPolicy; +import android.telephony.TelephonyManager; +import android.text.TextUtils; +import android.view.Display; +import android.view.SurfaceView; +import android.view.WindowManager; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayerLibraryInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Renderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RenderersFactory; +import org.mozilla.thirdparty.com.google.android.exoplayer2.SeekParameters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.audio.AudioRendererEventListener; +import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoRendererEventListener; +import java.io.ByteArrayOutputStream; +import java.io.Closeable; +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.lang.reflect.Method; +import java.math.BigDecimal; +import java.nio.charset.Charset; +import java.util.Arrays; +import java.util.Calendar; +import java.util.Collections; +import java.util.Formatter; +import java.util.GregorianCalendar; +import java.util.HashMap; +import java.util.List; +import java.util.Locale; +import java.util.MissingResourceException; +import java.util.TimeZone; +import java.util.UUID; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import java.util.zip.DataFormatException; +import java.util.zip.Inflater; +import org.checkerframework.checker.initialization.qual.UnknownInitialization; +import org.checkerframework.checker.nullness.compatqual.NullableType; +import org.checkerframework.checker.nullness.qual.EnsuresNonNull; +import org.checkerframework.checker.nullness.qual.PolyNull; + +/** + * Miscellaneous utility methods. + */ +public final class Util { + + /** + * Like {@link android.os.Build.VERSION#SDK_INT}, but in a place where it can be conveniently + * overridden for local testing. + */ + public static final int SDK_INT = Build.VERSION.SDK_INT; + + /** + * Like {@link Build#DEVICE}, but in a place where it can be conveniently overridden for local + * testing. + */ + public static final String DEVICE = Build.DEVICE; + + /** + * Like {@link Build#MANUFACTURER}, but in a place where it can be conveniently overridden for + * local testing. + */ + public static final String MANUFACTURER = Build.MANUFACTURER; + + /** + * Like {@link Build#MODEL}, but in a place where it can be conveniently overridden for local + * testing. + */ + public static final String MODEL = Build.MODEL; + + /** + * A concise description of the device that it can be useful to log for debugging purposes. + */ + public static final String DEVICE_DEBUG_INFO = DEVICE + ", " + MODEL + ", " + MANUFACTURER + ", " + + SDK_INT; + + /** An empty byte array. */ + public static final byte[] EMPTY_BYTE_ARRAY = new byte[0]; + + private static final String TAG = "Util"; + private static final Pattern XS_DATE_TIME_PATTERN = Pattern.compile( + "(\\d\\d\\d\\d)\\-(\\d\\d)\\-(\\d\\d)[Tt]" + + "(\\d\\d):(\\d\\d):(\\d\\d)([\\.,](\\d+))?" + + "([Zz]|((\\+|\\-)(\\d?\\d):?(\\d\\d)))?"); + private static final Pattern XS_DURATION_PATTERN = + Pattern.compile("^(-)?P(([0-9]*)Y)?(([0-9]*)M)?(([0-9]*)D)?" + + "(T(([0-9]*)H)?(([0-9]*)M)?(([0-9.]*)S)?)?$"); + private static final Pattern ESCAPED_CHARACTER_PATTERN = Pattern.compile("%([A-Fa-f0-9]{2})"); + + // Replacement map of ISO language codes used for normalization. + @Nullable private static HashMap languageTagReplacementMap; + + private Util() {} + + /** + * Converts the entirety of an {@link InputStream} to a byte array. + * + * @param inputStream the {@link InputStream} to be read. The input stream is not closed by this + * method. + * @return a byte array containing all of the inputStream's bytes. + * @throws IOException if an error occurs reading from the stream. + */ + public static byte[] toByteArray(InputStream inputStream) throws IOException { + byte[] buffer = new byte[1024 * 4]; + ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); + int bytesRead; + while ((bytesRead = inputStream.read(buffer)) != -1) { + outputStream.write(buffer, 0, bytesRead); + } + return outputStream.toByteArray(); + } + + /** + * Calls {@link Context#startForegroundService(Intent)} if {@link #SDK_INT} is 26 or higher, or + * {@link Context#startService(Intent)} otherwise. + * + * @param context The context to call. + * @param intent The intent to pass to the called method. + * @return The result of the called method. + */ + @Nullable + public static ComponentName startForegroundService(Context context, Intent intent) { + if (Util.SDK_INT >= 26) { + return context.startForegroundService(intent); + } else { + return context.startService(intent); + } + } + + /** + * Checks whether it's necessary to request the {@link permission#READ_EXTERNAL_STORAGE} + * permission read the specified {@link Uri}s, requesting the permission if necessary. + * + * @param activity The host activity for checking and requesting the permission. + * @param uris {@link Uri}s that may require {@link permission#READ_EXTERNAL_STORAGE} to read. + * @return Whether a permission request was made. + */ + @TargetApi(23) + public static boolean maybeRequestReadExternalStoragePermission(Activity activity, Uri... uris) { + if (Util.SDK_INT < 23) { + return false; + } + for (Uri uri : uris) { + if (isLocalFileUri(uri)) { + if (activity.checkSelfPermission(permission.READ_EXTERNAL_STORAGE) + != PackageManager.PERMISSION_GRANTED) { + activity.requestPermissions(new String[] {permission.READ_EXTERNAL_STORAGE}, 0); + return true; + } + break; + } + } + return false; + } + + /** + * Returns whether it may be possible to load the given URIs based on the network security + * policy's cleartext traffic permissions. + * + * @param uris A list of URIs that will be loaded. + * @return Whether it may be possible to load the given URIs. + */ + @TargetApi(24) + public static boolean checkCleartextTrafficPermitted(Uri... uris) { + if (Util.SDK_INT < 24) { + // We assume cleartext traffic is permitted. + return true; + } + for (Uri uri : uris) { + if ("http".equals(uri.getScheme()) + && !NetworkSecurityPolicy.getInstance() + .isCleartextTrafficPermitted(Assertions.checkNotNull(uri.getHost()))) { + // The security policy prevents cleartext traffic. + return false; + } + } + return true; + } + + /** + * Returns true if the URI is a path to a local file or a reference to a local file. + * + * @param uri The uri to test. + */ + public static boolean isLocalFileUri(Uri uri) { + String scheme = uri.getScheme(); + return TextUtils.isEmpty(scheme) || "file".equals(scheme); + } + + /** + * Tests two objects for {@link Object#equals(Object)} equality, handling the case where one or + * both may be null. + * + * @param o1 The first object. + * @param o2 The second object. + * @return {@code o1 == null ? o2 == null : o1.equals(o2)}. + */ + public static boolean areEqual(@Nullable Object o1, @Nullable Object o2) { + return o1 == null ? o2 == null : o1.equals(o2); + } + + /** + * Tests whether an {@code items} array contains an object equal to {@code item}, according to + * {@link Object#equals(Object)}. + * + *

If {@code item} is null then true is returned if and only if {@code items} contains null. + * + * @param items The array of items to search. + * @param item The item to search for. + * @return True if the array contains an object equal to the item being searched for. + */ + public static boolean contains(@NullableType Object[] items, @Nullable Object item) { + for (Object arrayItem : items) { + if (areEqual(arrayItem, item)) { + return true; + } + } + return false; + } + + /** + * Removes an indexed range from a List. + * + *

Does nothing if the provided range is valid and {@code fromIndex == toIndex}. + * + * @param list The List to remove the range from. + * @param fromIndex The first index to be removed (inclusive). + * @param toIndex The last index to be removed (exclusive). + * @throws IllegalArgumentException If {@code fromIndex} < 0, {@code toIndex} > {@code + * list.size()}, or {@code fromIndex} > {@code toIndex}. + */ + public static void removeRange(List list, int fromIndex, int toIndex) { + if (fromIndex < 0 || toIndex > list.size() || fromIndex > toIndex) { + throw new IllegalArgumentException(); + } else if (fromIndex != toIndex) { + // Checking index inequality prevents an unnecessary allocation. + list.subList(fromIndex, toIndex).clear(); + } + } + + /** + * Casts a nullable variable to a non-null variable without runtime null check. + * + *

Use {@link Assertions#checkNotNull(Object)} to throw if the value is null. + */ + @SuppressWarnings({"contracts.postcondition.not.satisfied", "return.type.incompatible"}) + @EnsuresNonNull("#1") + public static T castNonNull(@Nullable T value) { + return value; + } + + /** Casts a nullable type array to a non-null type array without runtime null check. */ + @SuppressWarnings({"contracts.postcondition.not.satisfied", "return.type.incompatible"}) + @EnsuresNonNull("#1") + public static T[] castNonNullTypeArray(@NullableType T[] value) { + return value; + } + + /** + * Copies and optionally truncates an array. Prevents null array elements created by {@link + * Arrays#copyOf(Object[], int)} by ensuring the new length does not exceed the current length. + * + * @param input The input array. + * @param length The output array length. Must be less or equal to the length of the input array. + * @return The copied array. + */ + @SuppressWarnings({"nullness:argument.type.incompatible", "nullness:return.type.incompatible"}) + public static T[] nullSafeArrayCopy(T[] input, int length) { + Assertions.checkArgument(length <= input.length); + return Arrays.copyOf(input, length); + } + + /** + * Copies a subset of an array. + * + * @param input The input array. + * @param from The start the range to be copied, inclusive + * @param to The end of the range to be copied, exclusive. + * @return The copied array. + */ + @SuppressWarnings({"nullness:argument.type.incompatible", "nullness:return.type.incompatible"}) + public static T[] nullSafeArrayCopyOfRange(T[] input, int from, int to) { + Assertions.checkArgument(0 <= from); + Assertions.checkArgument(to <= input.length); + return Arrays.copyOfRange(input, from, to); + } + + /** + * Creates a new array containing {@code original} with {@code newElement} appended. + * + * @param original The input array. + * @param newElement The element to append. + * @return The new array. + */ + public static T[] nullSafeArrayAppend(T[] original, T newElement) { + @NullableType T[] result = Arrays.copyOf(original, original.length + 1); + result[original.length] = newElement; + return castNonNullTypeArray(result); + } + + /** + * Creates a new array containing the concatenation of two non-null type arrays. + * + * @param first The first array. + * @param second The second array. + * @return The concatenated result. + */ + @SuppressWarnings({"nullness:assignment.type.incompatible"}) + public static T[] nullSafeArrayConcatenation(T[] first, T[] second) { + T[] concatenation = Arrays.copyOf(first, first.length + second.length); + System.arraycopy( + /* src= */ second, + /* srcPos= */ 0, + /* dest= */ concatenation, + /* destPos= */ first.length, + /* length= */ second.length); + return concatenation; + } + /** + * Creates a {@link Handler} with the specified {@link Handler.Callback} on the current {@link + * Looper} thread. The method accepts partially initialized objects as callback under the + * assumption that the Handler won't be used to send messages until the callback is fully + * initialized. + * + *

If the current thread doesn't have a {@link Looper}, the application's main thread {@link + * Looper} is used. + * + * @param callback A {@link Handler.Callback}. May be a partially initialized class. + * @return A {@link Handler} with the specified callback on the current {@link Looper} thread. + */ + public static Handler createHandler(Handler.@UnknownInitialization Callback callback) { + return createHandler(getLooper(), callback); + } + + /** + * Creates a {@link Handler} with the specified {@link Handler.Callback} on the specified {@link + * Looper} thread. The method accepts partially initialized objects as callback under the + * assumption that the Handler won't be used to send messages until the callback is fully + * initialized. + * + * @param looper A {@link Looper} to run the callback on. + * @param callback A {@link Handler.Callback}. May be a partially initialized class. + * @return A {@link Handler} with the specified callback on the current {@link Looper} thread. + */ + @SuppressWarnings({"nullness:argument.type.incompatible", "nullness:return.type.incompatible"}) + public static Handler createHandler( + Looper looper, Handler.@UnknownInitialization Callback callback) { + return new Handler(looper, callback); + } + + /** + * Returns the {@link Looper} associated with the current thread, or the {@link Looper} of the + * application's main thread if the current thread doesn't have a {@link Looper}. + */ + public static Looper getLooper() { + Looper myLooper = Looper.myLooper(); + return myLooper != null ? myLooper : Looper.getMainLooper(); + } + + /** + * Instantiates a new single threaded executor whose thread has the specified name. + * + * @param threadName The name of the thread. + * @return The executor. + */ + public static ExecutorService newSingleThreadExecutor(final String threadName) { + return Executors.newSingleThreadExecutor(runnable -> new Thread(runnable, threadName)); + } + + /** + * Closes a {@link DataSource}, suppressing any {@link IOException} that may occur. + * + * @param dataSource The {@link DataSource} to close. + */ + public static void closeQuietly(@Nullable DataSource dataSource) { + try { + if (dataSource != null) { + dataSource.close(); + } + } catch (IOException e) { + // Ignore. + } + } + + /** + * Closes a {@link Closeable}, suppressing any {@link IOException} that may occur. Both {@link + * java.io.OutputStream} and {@link InputStream} are {@code Closeable}. + * + * @param closeable The {@link Closeable} to close. + */ + public static void closeQuietly(@Nullable Closeable closeable) { + try { + if (closeable != null) { + closeable.close(); + } + } catch (IOException e) { + // Ignore. + } + } + + /** + * Reads an integer from a {@link Parcel} and interprets it as a boolean, with 0 mapping to false + * and all other values mapping to true. + * + * @param parcel The {@link Parcel} to read from. + * @return The read value. + */ + public static boolean readBoolean(Parcel parcel) { + return parcel.readInt() != 0; + } + + /** + * Writes a boolean to a {@link Parcel}. The boolean is written as an integer with value 1 (true) + * or 0 (false). + * + * @param parcel The {@link Parcel} to write to. + * @param value The value to write. + */ + public static void writeBoolean(Parcel parcel, boolean value) { + parcel.writeInt(value ? 1 : 0); + } + + /** + * Returns the language tag for a {@link Locale}. + * + *

For API levels ≥ 21, this tag is IETF BCP 47 compliant. Use {@link + * #normalizeLanguageCode(String)} to retrieve a normalized IETF BCP 47 language tag for all API + * levels if needed. + * + * @param locale A {@link Locale}. + * @return The language tag. + */ + public static String getLocaleLanguageTag(Locale locale) { + return SDK_INT >= 21 ? getLocaleLanguageTagV21(locale) : locale.toString(); + } + + /** + * Returns a normalized IETF BCP 47 language tag for {@code language}. + * + * @param language A case-insensitive language code supported by {@link + * Locale#forLanguageTag(String)}. + * @return The all-lowercase normalized code, or null if the input was null, or {@code + * language.toLowerCase()} if the language could not be normalized. + */ + public static @PolyNull String normalizeLanguageCode(@PolyNull String language) { + if (language == null) { + return null; + } + // Locale data (especially for API < 21) may produce tags with '_' instead of the + // standard-conformant '-'. + String normalizedTag = language.replace('_', '-'); + if (normalizedTag.isEmpty() || "und".equals(normalizedTag)) { + // Tag isn't valid, keep using the original. + normalizedTag = language; + } + normalizedTag = Util.toLowerInvariant(normalizedTag); + String mainLanguage = Util.splitAtFirst(normalizedTag, "-")[0]; + if (languageTagReplacementMap == null) { + languageTagReplacementMap = createIsoLanguageReplacementMap(); + } + @Nullable String replacedLanguage = languageTagReplacementMap.get(mainLanguage); + if (replacedLanguage != null) { + normalizedTag = + replacedLanguage + normalizedTag.substring(/* beginIndex= */ mainLanguage.length()); + mainLanguage = replacedLanguage; + } + if ("no".equals(mainLanguage) || "i".equals(mainLanguage) || "zh".equals(mainLanguage)) { + normalizedTag = maybeReplaceGrandfatheredLanguageTags(normalizedTag); + } + return normalizedTag; + } + + /** + * Returns a new {@link String} constructed by decoding UTF-8 encoded bytes. + * + * @param bytes The UTF-8 encoded bytes to decode. + * @return The string. + */ + public static String fromUtf8Bytes(byte[] bytes) { + return new String(bytes, Charset.forName(C.UTF8_NAME)); + } + + /** + * Returns a new {@link String} constructed by decoding UTF-8 encoded bytes in a subarray. + * + * @param bytes The UTF-8 encoded bytes to decode. + * @param offset The index of the first byte to decode. + * @param length The number of bytes to decode. + * @return The string. + */ + public static String fromUtf8Bytes(byte[] bytes, int offset, int length) { + return new String(bytes, offset, length, Charset.forName(C.UTF8_NAME)); + } + + /** + * Returns a new byte array containing the code points of a {@link String} encoded using UTF-8. + * + * @param value The {@link String} whose bytes should be obtained. + * @return The code points encoding using UTF-8. + */ + public static byte[] getUtf8Bytes(String value) { + return value.getBytes(Charset.forName(C.UTF8_NAME)); + } + + /** + * Splits a string using {@code value.split(regex, -1}). Note: this is is similar to {@link + * String#split(String)} but empty matches at the end of the string will not be omitted from the + * returned array. + * + * @param value The string to split. + * @param regex A delimiting regular expression. + * @return The array of strings resulting from splitting the string. + */ + public static String[] split(String value, String regex) { + return value.split(regex, /* limit= */ -1); + } + + /** + * Splits the string at the first occurrence of the delimiter {@code regex}. If the delimiter does + * not match, returns an array with one element which is the input string. If the delimiter does + * match, returns an array with the portion of the string before the delimiter and the rest of the + * string. + * + * @param value The string. + * @param regex A delimiting regular expression. + * @return The string split by the first occurrence of the delimiter. + */ + public static String[] splitAtFirst(String value, String regex) { + return value.split(regex, /* limit= */ 2); + } + + /** + * Returns whether the given character is a carriage return ('\r') or a line feed ('\n'). + * + * @param c The character. + * @return Whether the given character is a linebreak. + */ + public static boolean isLinebreak(int c) { + return c == '\n' || c == '\r'; + } + + /** + * Converts text to lower case using {@link Locale#US}. + * + * @param text The text to convert. + * @return The lower case text, or null if {@code text} is null. + */ + public static @PolyNull String toLowerInvariant(@PolyNull String text) { + return text == null ? text : text.toLowerCase(Locale.US); + } + + /** + * Converts text to upper case using {@link Locale#US}. + * + * @param text The text to convert. + * @return The upper case text, or null if {@code text} is null. + */ + public static @PolyNull String toUpperInvariant(@PolyNull String text) { + return text == null ? text : text.toUpperCase(Locale.US); + } + + /** + * Formats a string using {@link Locale#US}. + * + * @see String#format(String, Object...) + */ + public static String formatInvariant(String format, Object... args) { + return String.format(Locale.US, format, args); + } + + /** + * Divides a {@code numerator} by a {@code denominator}, returning the ceiled result. + * + * @param numerator The numerator to divide. + * @param denominator The denominator to divide by. + * @return The ceiled result of the division. + */ + public static int ceilDivide(int numerator, int denominator) { + return (numerator + denominator - 1) / denominator; + } + + /** + * Divides a {@code numerator} by a {@code denominator}, returning the ceiled result. + * + * @param numerator The numerator to divide. + * @param denominator The denominator to divide by. + * @return The ceiled result of the division. + */ + public static long ceilDivide(long numerator, long denominator) { + return (numerator + denominator - 1) / denominator; + } + + /** + * Constrains a value to the specified bounds. + * + * @param value The value to constrain. + * @param min The lower bound. + * @param max The upper bound. + * @return The constrained value {@code Math.max(min, Math.min(value, max))}. + */ + public static int constrainValue(int value, int min, int max) { + return Math.max(min, Math.min(value, max)); + } + + /** + * Constrains a value to the specified bounds. + * + * @param value The value to constrain. + * @param min The lower bound. + * @param max The upper bound. + * @return The constrained value {@code Math.max(min, Math.min(value, max))}. + */ + public static long constrainValue(long value, long min, long max) { + return Math.max(min, Math.min(value, max)); + } + + /** + * Constrains a value to the specified bounds. + * + * @param value The value to constrain. + * @param min The lower bound. + * @param max The upper bound. + * @return The constrained value {@code Math.max(min, Math.min(value, max))}. + */ + public static float constrainValue(float value, float min, float max) { + return Math.max(min, Math.min(value, max)); + } + + /** + * Returns the sum of two arguments, or a third argument if the result overflows. + * + * @param x The first value. + * @param y The second value. + * @param overflowResult The return value if {@code x + y} overflows. + * @return {@code x + y}, or {@code overflowResult} if the result overflows. + */ + public static long addWithOverflowDefault(long x, long y, long overflowResult) { + long result = x + y; + // See Hacker's Delight 2-13 (H. Warren Jr). + if (((x ^ result) & (y ^ result)) < 0) { + return overflowResult; + } + return result; + } + + /** + * Returns the difference between two arguments, or a third argument if the result overflows. + * + * @param x The first value. + * @param y The second value. + * @param overflowResult The return value if {@code x - y} overflows. + * @return {@code x - y}, or {@code overflowResult} if the result overflows. + */ + public static long subtractWithOverflowDefault(long x, long y, long overflowResult) { + long result = x - y; + // See Hacker's Delight 2-13 (H. Warren Jr). + if (((x ^ y) & (x ^ result)) < 0) { + return overflowResult; + } + return result; + } + + /** + * Returns the index of the first occurrence of {@code value} in {@code array}, or {@link + * C#INDEX_UNSET} if {@code value} is not contained in {@code array}. + * + * @param array The array to search. + * @param value The value to search for. + * @return The index of the first occurrence of value in {@code array}, or {@link C#INDEX_UNSET} + * if {@code value} is not contained in {@code array}. + */ + public static int linearSearch(int[] array, int value) { + for (int i = 0; i < array.length; i++) { + if (array[i] == value) { + return i; + } + } + return C.INDEX_UNSET; + } + + /** + * Returns the index of the largest element in {@code array} that is less than (or optionally + * equal to) a specified {@code value}. + * + *

The search is performed using a binary search algorithm, so the array must be sorted. If the + * array contains multiple elements equal to {@code value} and {@code inclusive} is true, the + * index of the first one will be returned. + * + * @param array The array to search. + * @param value The value being searched for. + * @param inclusive If the value is present in the array, whether to return the corresponding + * index. If false then the returned index corresponds to the largest element strictly less + * than the value. + * @param stayInBounds If true, then 0 will be returned in the case that the value is smaller than + * the smallest element in the array. If false then -1 will be returned. + * @return The index of the largest element in {@code array} that is less than (or optionally + * equal to) {@code value}. + */ + public static int binarySearchFloor( + int[] array, int value, boolean inclusive, boolean stayInBounds) { + int index = Arrays.binarySearch(array, value); + if (index < 0) { + index = -(index + 2); + } else { + while (--index >= 0 && array[index] == value) {} + if (inclusive) { + index++; + } + } + return stayInBounds ? Math.max(0, index) : index; + } + + /** + * Returns the index of the largest element in {@code array} that is less than (or optionally + * equal to) a specified {@code value}. + *

+ * The search is performed using a binary search algorithm, so the array must be sorted. If the + * array contains multiple elements equal to {@code value} and {@code inclusive} is true, the + * index of the first one will be returned. + * + * @param array The array to search. + * @param value The value being searched for. + * @param inclusive If the value is present in the array, whether to return the corresponding + * index. If false then the returned index corresponds to the largest element strictly less + * than the value. + * @param stayInBounds If true, then 0 will be returned in the case that the value is smaller than + * the smallest element in the array. If false then -1 will be returned. + * @return The index of the largest element in {@code array} that is less than (or optionally + * equal to) {@code value}. + */ + public static int binarySearchFloor(long[] array, long value, boolean inclusive, + boolean stayInBounds) { + int index = Arrays.binarySearch(array, value); + if (index < 0) { + index = -(index + 2); + } else { + while (--index >= 0 && array[index] == value) {} + if (inclusive) { + index++; + } + } + return stayInBounds ? Math.max(0, index) : index; + } + + /** + * Returns the index of the largest element in {@code list} that is less than (or optionally equal + * to) a specified {@code value}. + * + *

The search is performed using a binary search algorithm, so the list must be sorted. If the + * list contains multiple elements equal to {@code value} and {@code inclusive} is true, the index + * of the first one will be returned. + * + * @param The type of values being searched. + * @param list The list to search. + * @param value The value being searched for. + * @param inclusive If the value is present in the list, whether to return the corresponding + * index. If false then the returned index corresponds to the largest element strictly less + * than the value. + * @param stayInBounds If true, then 0 will be returned in the case that the value is smaller than + * the smallest element in the list. If false then -1 will be returned. + * @return The index of the largest element in {@code list} that is less than (or optionally equal + * to) {@code value}. + */ + public static > int binarySearchFloor( + List> list, + T value, + boolean inclusive, + boolean stayInBounds) { + int index = Collections.binarySearch(list, value); + if (index < 0) { + index = -(index + 2); + } else { + while (--index >= 0 && list.get(index).compareTo(value) == 0) {} + if (inclusive) { + index++; + } + } + return stayInBounds ? Math.max(0, index) : index; + } + + /** + * Returns the index of the smallest element in {@code array} that is greater than (or optionally + * equal to) a specified {@code value}. + * + *

The search is performed using a binary search algorithm, so the array must be sorted. If the + * array contains multiple elements equal to {@code value} and {@code inclusive} is true, the + * index of the last one will be returned. + * + * @param array The array to search. + * @param value The value being searched for. + * @param inclusive If the value is present in the array, whether to return the corresponding + * index. If false then the returned index corresponds to the smallest element strictly + * greater than the value. + * @param stayInBounds If true, then {@code (a.length - 1)} will be returned in the case that the + * value is greater than the largest element in the array. If false then {@code a.length} will + * be returned. + * @return The index of the smallest element in {@code array} that is greater than (or optionally + * equal to) {@code value}. + */ + public static int binarySearchCeil( + int[] array, int value, boolean inclusive, boolean stayInBounds) { + int index = Arrays.binarySearch(array, value); + if (index < 0) { + index = ~index; + } else { + while (++index < array.length && array[index] == value) {} + if (inclusive) { + index--; + } + } + return stayInBounds ? Math.min(array.length - 1, index) : index; + } + + /** + * Returns the index of the smallest element in {@code array} that is greater than (or optionally + * equal to) a specified {@code value}. + * + *

The search is performed using a binary search algorithm, so the array must be sorted. If the + * array contains multiple elements equal to {@code value} and {@code inclusive} is true, the + * index of the last one will be returned. + * + * @param array The array to search. + * @param value The value being searched for. + * @param inclusive If the value is present in the array, whether to return the corresponding + * index. If false then the returned index corresponds to the smallest element strictly + * greater than the value. + * @param stayInBounds If true, then {@code (a.length - 1)} will be returned in the case that the + * value is greater than the largest element in the array. If false then {@code a.length} will + * be returned. + * @return The index of the smallest element in {@code array} that is greater than (or optionally + * equal to) {@code value}. + */ + public static int binarySearchCeil( + long[] array, long value, boolean inclusive, boolean stayInBounds) { + int index = Arrays.binarySearch(array, value); + if (index < 0) { + index = ~index; + } else { + while (++index < array.length && array[index] == value) {} + if (inclusive) { + index--; + } + } + return stayInBounds ? Math.min(array.length - 1, index) : index; + } + + /** + * Returns the index of the smallest element in {@code list} that is greater than (or optionally + * equal to) a specified value. + * + *

The search is performed using a binary search algorithm, so the list must be sorted. If the + * list contains multiple elements equal to {@code value} and {@code inclusive} is true, the index + * of the last one will be returned. + * + * @param The type of values being searched. + * @param list The list to search. + * @param value The value being searched for. + * @param inclusive If the value is present in the list, whether to return the corresponding + * index. If false then the returned index corresponds to the smallest element strictly + * greater than the value. + * @param stayInBounds If true, then {@code (list.size() - 1)} will be returned in the case that + * the value is greater than the largest element in the list. If false then {@code + * list.size()} will be returned. + * @return The index of the smallest element in {@code list} that is greater than (or optionally + * equal to) {@code value}. + */ + public static > int binarySearchCeil( + List> list, + T value, + boolean inclusive, + boolean stayInBounds) { + int index = Collections.binarySearch(list, value); + if (index < 0) { + index = ~index; + } else { + int listSize = list.size(); + while (++index < listSize && list.get(index).compareTo(value) == 0) {} + if (inclusive) { + index--; + } + } + return stayInBounds ? Math.min(list.size() - 1, index) : index; + } + + /** + * Compares two long values and returns the same value as {@code Long.compare(long, long)}. + * + * @param left The left operand. + * @param right The right operand. + * @return 0, if left == right, a negative value if left < right, or a positive value if left + * > right. + */ + public static int compareLong(long left, long right) { + return left < right ? -1 : left == right ? 0 : 1; + } + + /** + * Parses an xs:duration attribute value, returning the parsed duration in milliseconds. + * + * @param value The attribute value to decode. + * @return The parsed duration in milliseconds. + */ + public static long parseXsDuration(String value) { + Matcher matcher = XS_DURATION_PATTERN.matcher(value); + if (matcher.matches()) { + boolean negated = !TextUtils.isEmpty(matcher.group(1)); + // Durations containing years and months aren't completely defined. We assume there are + // 30.4368 days in a month, and 365.242 days in a year. + String years = matcher.group(3); + double durationSeconds = (years != null) ? Double.parseDouble(years) * 31556908 : 0; + String months = matcher.group(5); + durationSeconds += (months != null) ? Double.parseDouble(months) * 2629739 : 0; + String days = matcher.group(7); + durationSeconds += (days != null) ? Double.parseDouble(days) * 86400 : 0; + String hours = matcher.group(10); + durationSeconds += (hours != null) ? Double.parseDouble(hours) * 3600 : 0; + String minutes = matcher.group(12); + durationSeconds += (minutes != null) ? Double.parseDouble(minutes) * 60 : 0; + String seconds = matcher.group(14); + durationSeconds += (seconds != null) ? Double.parseDouble(seconds) : 0; + long durationMillis = (long) (durationSeconds * 1000); + return negated ? -durationMillis : durationMillis; + } else { + return (long) (Double.parseDouble(value) * 3600 * 1000); + } + } + + /** + * Parses an xs:dateTime attribute value, returning the parsed timestamp in milliseconds since + * the epoch. + * + * @param value The attribute value to decode. + * @return The parsed timestamp in milliseconds since the epoch. + * @throws ParserException if an error occurs parsing the dateTime attribute value. + */ + public static long parseXsDateTime(String value) throws ParserException { + Matcher matcher = XS_DATE_TIME_PATTERN.matcher(value); + if (!matcher.matches()) { + throw new ParserException("Invalid date/time format: " + value); + } + + int timezoneShift; + if (matcher.group(9) == null) { + // No time zone specified. + timezoneShift = 0; + } else if (matcher.group(9).equalsIgnoreCase("Z")) { + timezoneShift = 0; + } else { + timezoneShift = ((Integer.parseInt(matcher.group(12)) * 60 + + Integer.parseInt(matcher.group(13)))); + if ("-".equals(matcher.group(11))) { + timezoneShift *= -1; + } + } + + Calendar dateTime = new GregorianCalendar(TimeZone.getTimeZone("GMT")); + + dateTime.clear(); + // Note: The month value is 0-based, hence the -1 on group(2) + dateTime.set(Integer.parseInt(matcher.group(1)), + Integer.parseInt(matcher.group(2)) - 1, + Integer.parseInt(matcher.group(3)), + Integer.parseInt(matcher.group(4)), + Integer.parseInt(matcher.group(5)), + Integer.parseInt(matcher.group(6))); + if (!TextUtils.isEmpty(matcher.group(8))) { + final BigDecimal bd = new BigDecimal("0." + matcher.group(8)); + // we care only for milliseconds, so movePointRight(3) + dateTime.set(Calendar.MILLISECOND, bd.movePointRight(3).intValue()); + } + + long time = dateTime.getTimeInMillis(); + if (timezoneShift != 0) { + time -= timezoneShift * 60000; + } + + return time; + } + + /** + * Scales a large timestamp. + *

+ * Logically, scaling consists of a multiplication followed by a division. The actual operations + * performed are designed to minimize the probability of overflow. + * + * @param timestamp The timestamp to scale. + * @param multiplier The multiplier. + * @param divisor The divisor. + * @return The scaled timestamp. + */ + public static long scaleLargeTimestamp(long timestamp, long multiplier, long divisor) { + if (divisor >= multiplier && (divisor % multiplier) == 0) { + long divisionFactor = divisor / multiplier; + return timestamp / divisionFactor; + } else if (divisor < multiplier && (multiplier % divisor) == 0) { + long multiplicationFactor = multiplier / divisor; + return timestamp * multiplicationFactor; + } else { + double multiplicationFactor = (double) multiplier / divisor; + return (long) (timestamp * multiplicationFactor); + } + } + + /** + * Applies {@link #scaleLargeTimestamp(long, long, long)} to a list of unscaled timestamps. + * + * @param timestamps The timestamps to scale. + * @param multiplier The multiplier. + * @param divisor The divisor. + * @return The scaled timestamps. + */ + public static long[] scaleLargeTimestamps(List timestamps, long multiplier, long divisor) { + long[] scaledTimestamps = new long[timestamps.size()]; + if (divisor >= multiplier && (divisor % multiplier) == 0) { + long divisionFactor = divisor / multiplier; + for (int i = 0; i < scaledTimestamps.length; i++) { + scaledTimestamps[i] = timestamps.get(i) / divisionFactor; + } + } else if (divisor < multiplier && (multiplier % divisor) == 0) { + long multiplicationFactor = multiplier / divisor; + for (int i = 0; i < scaledTimestamps.length; i++) { + scaledTimestamps[i] = timestamps.get(i) * multiplicationFactor; + } + } else { + double multiplicationFactor = (double) multiplier / divisor; + for (int i = 0; i < scaledTimestamps.length; i++) { + scaledTimestamps[i] = (long) (timestamps.get(i) * multiplicationFactor); + } + } + return scaledTimestamps; + } + + /** + * Applies {@link #scaleLargeTimestamp(long, long, long)} to an array of unscaled timestamps. + * + * @param timestamps The timestamps to scale. + * @param multiplier The multiplier. + * @param divisor The divisor. + */ + public static void scaleLargeTimestampsInPlace(long[] timestamps, long multiplier, long divisor) { + if (divisor >= multiplier && (divisor % multiplier) == 0) { + long divisionFactor = divisor / multiplier; + for (int i = 0; i < timestamps.length; i++) { + timestamps[i] /= divisionFactor; + } + } else if (divisor < multiplier && (multiplier % divisor) == 0) { + long multiplicationFactor = multiplier / divisor; + for (int i = 0; i < timestamps.length; i++) { + timestamps[i] *= multiplicationFactor; + } + } else { + double multiplicationFactor = (double) multiplier / divisor; + for (int i = 0; i < timestamps.length; i++) { + timestamps[i] = (long) (timestamps[i] * multiplicationFactor); + } + } + } + + /** + * Returns the duration of media that will elapse in {@code playoutDuration}. + * + * @param playoutDuration The duration to scale. + * @param speed The playback speed. + * @return The scaled duration, in the same units as {@code playoutDuration}. + */ + public static long getMediaDurationForPlayoutDuration(long playoutDuration, float speed) { + if (speed == 1f) { + return playoutDuration; + } + return Math.round((double) playoutDuration * speed); + } + + /** + * Returns the playout duration of {@code mediaDuration} of media. + * + * @param mediaDuration The duration to scale. + * @return The scaled duration, in the same units as {@code mediaDuration}. + */ + public static long getPlayoutDurationForMediaDuration(long mediaDuration, float speed) { + if (speed == 1f) { + return mediaDuration; + } + return Math.round((double) mediaDuration / speed); + } + + /** + * Resolves a seek given the requested seek position, a {@link SeekParameters} and two candidate + * sync points. + * + * @param positionUs The requested seek position, in microseocnds. + * @param seekParameters The {@link SeekParameters}. + * @param firstSyncUs The first candidate seek point, in micrseconds. + * @param secondSyncUs The second candidate seek point, in microseconds. May equal {@code + * firstSyncUs} if there's only one candidate. + * @return The resolved seek position, in microseconds. + */ + public static long resolveSeekPositionUs( + long positionUs, SeekParameters seekParameters, long firstSyncUs, long secondSyncUs) { + if (SeekParameters.EXACT.equals(seekParameters)) { + return positionUs; + } + long minPositionUs = + subtractWithOverflowDefault(positionUs, seekParameters.toleranceBeforeUs, Long.MIN_VALUE); + long maxPositionUs = + addWithOverflowDefault(positionUs, seekParameters.toleranceAfterUs, Long.MAX_VALUE); + boolean firstSyncPositionValid = minPositionUs <= firstSyncUs && firstSyncUs <= maxPositionUs; + boolean secondSyncPositionValid = + minPositionUs <= secondSyncUs && secondSyncUs <= maxPositionUs; + if (firstSyncPositionValid && secondSyncPositionValid) { + if (Math.abs(firstSyncUs - positionUs) <= Math.abs(secondSyncUs - positionUs)) { + return firstSyncUs; + } else { + return secondSyncUs; + } + } else if (firstSyncPositionValid) { + return firstSyncUs; + } else if (secondSyncPositionValid) { + return secondSyncUs; + } else { + return minPositionUs; + } + } + + /** + * Converts a list of integers to a primitive array. + * + * @param list A list of integers. + * @return The list in array form, or null if the input list was null. + */ + public static int @PolyNull [] toArray(@PolyNull List list) { + if (list == null) { + return null; + } + int length = list.size(); + int[] intArray = new int[length]; + for (int i = 0; i < length; i++) { + intArray[i] = list.get(i); + } + return intArray; + } + + /** + * Returns the integer equal to the big-endian concatenation of the characters in {@code string} + * as bytes. The string must be no more than four characters long. + * + * @param string A string no more than four characters long. + */ + public static int getIntegerCodeForString(String string) { + int length = string.length(); + Assertions.checkArgument(length <= 4); + int result = 0; + for (int i = 0; i < length; i++) { + result <<= 8; + result |= string.charAt(i); + } + return result; + } + + /** + * Converts an integer to a long by unsigned conversion. + * + *

This method is equivalent to {@link Integer#toUnsignedLong(int)} for API 26+. + */ + public static long toUnsignedLong(int x) { + // x is implicitly casted to a long before the bit operation is executed but this does not + // impact the method correctness. + return x & 0xFFFFFFFFL; + } + + /** + * Return the long that is composed of the bits of the 2 specified integers. + * + * @param mostSignificantBits The 32 most significant bits of the long to return. + * @param leastSignificantBits The 32 least significant bits of the long to return. + * @return a long where its 32 most significant bits are {@code mostSignificantBits} bits and its + * 32 least significant bits are {@code leastSignificantBits}. + */ + public static long toLong(int mostSignificantBits, int leastSignificantBits) { + return (toUnsignedLong(mostSignificantBits) << 32) | toUnsignedLong(leastSignificantBits); + } + + /** + * Returns a byte array containing values parsed from the hex string provided. + * + * @param hexString The hex string to convert to bytes. + * @return A byte array containing values parsed from the hex string provided. + */ + public static byte[] getBytesFromHexString(String hexString) { + byte[] data = new byte[hexString.length() / 2]; + for (int i = 0; i < data.length; i++) { + int stringOffset = i * 2; + data[i] = (byte) ((Character.digit(hexString.charAt(stringOffset), 16) << 4) + + Character.digit(hexString.charAt(stringOffset + 1), 16)); + } + return data; + } + + /** + * Returns a string with comma delimited simple names of each object's class. + * + * @param objects The objects whose simple class names should be comma delimited and returned. + * @return A string with comma delimited simple names of each object's class. + */ + public static String getCommaDelimitedSimpleClassNames(Object[] objects) { + StringBuilder stringBuilder = new StringBuilder(); + for (int i = 0; i < objects.length; i++) { + stringBuilder.append(objects[i].getClass().getSimpleName()); + if (i < objects.length - 1) { + stringBuilder.append(", "); + } + } + return stringBuilder.toString(); + } + + /** + * Returns a user agent string based on the given application name and the library version. + * + * @param context A valid context of the calling application. + * @param applicationName String that will be prefix'ed to the generated user agent. + * @return A user agent string generated using the applicationName and the library version. + */ + public static String getUserAgent(Context context, String applicationName) { + String versionName; + try { + String packageName = context.getPackageName(); + PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0); + versionName = info.versionName; + } catch (NameNotFoundException e) { + versionName = "?"; + } + return applicationName + "/" + versionName + " (Linux;Android " + Build.VERSION.RELEASE + + ") " + ExoPlayerLibraryInfo.VERSION_SLASHY; + } + + /** + * Returns a copy of {@code codecs} without the codecs whose track type doesn't match {@code + * trackType}. + * + * @param codecs A codec sequence string, as defined in RFC 6381. + * @param trackType One of {@link C}{@code .TRACK_TYPE_*}. + * @return A copy of {@code codecs} without the codecs whose track type doesn't match {@code + * trackType}. If this ends up empty, or {@code codecs} is null, return null. + */ + public static @Nullable String getCodecsOfType(@Nullable String codecs, int trackType) { + String[] codecArray = splitCodecs(codecs); + if (codecArray.length == 0) { + return null; + } + StringBuilder builder = new StringBuilder(); + for (String codec : codecArray) { + if (trackType == MimeTypes.getTrackTypeOfCodec(codec)) { + if (builder.length() > 0) { + builder.append(","); + } + builder.append(codec); + } + } + return builder.length() > 0 ? builder.toString() : null; + } + + /** + * Splits a codecs sequence string, as defined in RFC 6381, into individual codec strings. + * + * @param codecs A codec sequence string, as defined in RFC 6381. + * @return The split codecs, or an array of length zero if the input was empty or null. + */ + public static String[] splitCodecs(@Nullable String codecs) { + if (TextUtils.isEmpty(codecs)) { + return new String[0]; + } + return split(codecs.trim(), "(\\s*,\\s*)"); + } + + /** + * Converts a sample bit depth to a corresponding PCM encoding constant. + * + * @param bitDepth The bit depth. Supported values are 8, 16, 24 and 32. + * @return The corresponding encoding. One of {@link C#ENCODING_PCM_8BIT}, + * {@link C#ENCODING_PCM_16BIT}, {@link C#ENCODING_PCM_24BIT} and + * {@link C#ENCODING_PCM_32BIT}. If the bit depth is unsupported then + * {@link C#ENCODING_INVALID} is returned. + */ + @C.PcmEncoding + public static int getPcmEncoding(int bitDepth) { + switch (bitDepth) { + case 8: + return C.ENCODING_PCM_8BIT; + case 16: + return C.ENCODING_PCM_16BIT; + case 24: + return C.ENCODING_PCM_24BIT; + case 32: + return C.ENCODING_PCM_32BIT; + default: + return C.ENCODING_INVALID; + } + } + + /** + * Returns whether {@code encoding} is one of the linear PCM encodings. + * + * @param encoding The encoding of the audio data. + * @return Whether the encoding is one of the PCM encodings. + */ + public static boolean isEncodingLinearPcm(@C.Encoding int encoding) { + return encoding == C.ENCODING_PCM_8BIT + || encoding == C.ENCODING_PCM_16BIT + || encoding == C.ENCODING_PCM_16BIT_BIG_ENDIAN + || encoding == C.ENCODING_PCM_24BIT + || encoding == C.ENCODING_PCM_32BIT + || encoding == C.ENCODING_PCM_FLOAT; + } + + /** + * Returns whether {@code encoding} is high resolution (> 16-bit) PCM. + * + * @param encoding The encoding of the audio data. + * @return Whether the encoding is high resolution PCM. + */ + public static boolean isEncodingHighResolutionPcm(@C.PcmEncoding int encoding) { + return encoding == C.ENCODING_PCM_24BIT + || encoding == C.ENCODING_PCM_32BIT + || encoding == C.ENCODING_PCM_FLOAT; + } + + /** + * Returns the audio track channel configuration for the given channel count, or {@link + * AudioFormat#CHANNEL_INVALID} if output is not poossible. + * + * @param channelCount The number of channels in the input audio. + * @return The channel configuration or {@link AudioFormat#CHANNEL_INVALID} if output is not + * possible. + */ + public static int getAudioTrackChannelConfig(int channelCount) { + switch (channelCount) { + case 1: + return AudioFormat.CHANNEL_OUT_MONO; + case 2: + return AudioFormat.CHANNEL_OUT_STEREO; + case 3: + return AudioFormat.CHANNEL_OUT_STEREO | AudioFormat.CHANNEL_OUT_FRONT_CENTER; + case 4: + return AudioFormat.CHANNEL_OUT_QUAD; + case 5: + return AudioFormat.CHANNEL_OUT_QUAD | AudioFormat.CHANNEL_OUT_FRONT_CENTER; + case 6: + return AudioFormat.CHANNEL_OUT_5POINT1; + case 7: + return AudioFormat.CHANNEL_OUT_5POINT1 | AudioFormat.CHANNEL_OUT_BACK_CENTER; + case 8: + if (Util.SDK_INT >= 23) { + return AudioFormat.CHANNEL_OUT_7POINT1_SURROUND; + } else if (Util.SDK_INT >= 21) { + // Equal to AudioFormat.CHANNEL_OUT_7POINT1_SURROUND, which is hidden before Android M. + return AudioFormat.CHANNEL_OUT_5POINT1 + | AudioFormat.CHANNEL_OUT_SIDE_LEFT + | AudioFormat.CHANNEL_OUT_SIDE_RIGHT; + } else { + // 8 ch output is not supported before Android L. + return AudioFormat.CHANNEL_INVALID; + } + default: + return AudioFormat.CHANNEL_INVALID; + } + } + + /** + * Returns the frame size for audio with {@code channelCount} channels in the specified encoding. + * + * @param pcmEncoding The encoding of the audio data. + * @param channelCount The channel count. + * @return The size of one audio frame in bytes. + */ + public static int getPcmFrameSize(@C.PcmEncoding int pcmEncoding, int channelCount) { + switch (pcmEncoding) { + case C.ENCODING_PCM_8BIT: + return channelCount; + case C.ENCODING_PCM_16BIT: + case C.ENCODING_PCM_16BIT_BIG_ENDIAN: + return channelCount * 2; + case C.ENCODING_PCM_24BIT: + return channelCount * 3; + case C.ENCODING_PCM_32BIT: + case C.ENCODING_PCM_FLOAT: + return channelCount * 4; + case C.ENCODING_INVALID: + case Format.NO_VALUE: + default: + throw new IllegalArgumentException(); + } + } + + /** + * Returns the {@link C.AudioUsage} corresponding to the specified {@link C.StreamType}. + */ + @C.AudioUsage + public static int getAudioUsageForStreamType(@C.StreamType int streamType) { + switch (streamType) { + case C.STREAM_TYPE_ALARM: + return C.USAGE_ALARM; + case C.STREAM_TYPE_DTMF: + return C.USAGE_VOICE_COMMUNICATION_SIGNALLING; + case C.STREAM_TYPE_NOTIFICATION: + return C.USAGE_NOTIFICATION; + case C.STREAM_TYPE_RING: + return C.USAGE_NOTIFICATION_RINGTONE; + case C.STREAM_TYPE_SYSTEM: + return C.USAGE_ASSISTANCE_SONIFICATION; + case C.STREAM_TYPE_VOICE_CALL: + return C.USAGE_VOICE_COMMUNICATION; + case C.STREAM_TYPE_USE_DEFAULT: + case C.STREAM_TYPE_MUSIC: + default: + return C.USAGE_MEDIA; + } + } + + /** + * Returns the {@link C.AudioContentType} corresponding to the specified {@link C.StreamType}. + */ + @C.AudioContentType + public static int getAudioContentTypeForStreamType(@C.StreamType int streamType) { + switch (streamType) { + case C.STREAM_TYPE_ALARM: + case C.STREAM_TYPE_DTMF: + case C.STREAM_TYPE_NOTIFICATION: + case C.STREAM_TYPE_RING: + case C.STREAM_TYPE_SYSTEM: + return C.CONTENT_TYPE_SONIFICATION; + case C.STREAM_TYPE_VOICE_CALL: + return C.CONTENT_TYPE_SPEECH; + case C.STREAM_TYPE_USE_DEFAULT: + case C.STREAM_TYPE_MUSIC: + default: + return C.CONTENT_TYPE_MUSIC; + } + } + + /** + * Returns the {@link C.StreamType} corresponding to the specified {@link C.AudioUsage}. + */ + @C.StreamType + public static int getStreamTypeForAudioUsage(@C.AudioUsage int usage) { + switch (usage) { + case C.USAGE_MEDIA: + case C.USAGE_GAME: + case C.USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: + return C.STREAM_TYPE_MUSIC; + case C.USAGE_ASSISTANCE_SONIFICATION: + return C.STREAM_TYPE_SYSTEM; + case C.USAGE_VOICE_COMMUNICATION: + return C.STREAM_TYPE_VOICE_CALL; + case C.USAGE_VOICE_COMMUNICATION_SIGNALLING: + return C.STREAM_TYPE_DTMF; + case C.USAGE_ALARM: + return C.STREAM_TYPE_ALARM; + case C.USAGE_NOTIFICATION_RINGTONE: + return C.STREAM_TYPE_RING; + case C.USAGE_NOTIFICATION: + case C.USAGE_NOTIFICATION_COMMUNICATION_REQUEST: + case C.USAGE_NOTIFICATION_COMMUNICATION_INSTANT: + case C.USAGE_NOTIFICATION_COMMUNICATION_DELAYED: + case C.USAGE_NOTIFICATION_EVENT: + return C.STREAM_TYPE_NOTIFICATION; + case C.USAGE_ASSISTANCE_ACCESSIBILITY: + case C.USAGE_ASSISTANT: + case C.USAGE_UNKNOWN: + default: + return C.STREAM_TYPE_DEFAULT; + } + } + + /** + * Derives a DRM {@link UUID} from {@code drmScheme}. + * + * @param drmScheme A UUID string, or {@code "widevine"}, {@code "playready"} or {@code + * "clearkey"}. + * @return The derived {@link UUID}, or {@code null} if one could not be derived. + */ + public static @Nullable UUID getDrmUuid(String drmScheme) { + switch (toLowerInvariant(drmScheme)) { + case "widevine": + return C.WIDEVINE_UUID; + case "playready": + return C.PLAYREADY_UUID; + case "clearkey": + return C.CLEARKEY_UUID; + default: + try { + return UUID.fromString(drmScheme); + } catch (RuntimeException e) { + return null; + } + } + } + + /** + * Makes a best guess to infer the type from a {@link Uri}. + * + * @param uri The {@link Uri}. + * @param overrideExtension If not null, used to infer the type. + * @return The content type. + */ + @C.ContentType + public static int inferContentType(Uri uri, @Nullable String overrideExtension) { + return TextUtils.isEmpty(overrideExtension) + ? inferContentType(uri) + : inferContentType("." + overrideExtension); + } + + /** + * Makes a best guess to infer the type from a {@link Uri}. + * + * @param uri The {@link Uri}. + * @return The content type. + */ + @C.ContentType + public static int inferContentType(Uri uri) { + String path = uri.getPath(); + return path == null ? C.TYPE_OTHER : inferContentType(path); + } + + /** + * Makes a best guess to infer the type from a file name. + * + * @param fileName Name of the file. It can include the path of the file. + * @return The content type. + */ + @C.ContentType + public static int inferContentType(String fileName) { + fileName = toLowerInvariant(fileName); + if (fileName.endsWith(".mpd")) { + return C.TYPE_DASH; + } else if (fileName.endsWith(".m3u8")) { + return C.TYPE_HLS; + } else if (fileName.matches(".*\\.ism(l)?(/manifest(\\(.+\\))?)?")) { + return C.TYPE_SS; + } else { + return C.TYPE_OTHER; + } + } + + /** + * Returns the specified millisecond time formatted as a string. + * + * @param builder The builder that {@code formatter} will write to. + * @param formatter The formatter. + * @param timeMs The time to format as a string, in milliseconds. + * @return The time formatted as a string. + */ + public static String getStringForTime(StringBuilder builder, Formatter formatter, long timeMs) { + if (timeMs == C.TIME_UNSET) { + timeMs = 0; + } + long totalSeconds = (timeMs + 500) / 1000; + long seconds = totalSeconds % 60; + long minutes = (totalSeconds / 60) % 60; + long hours = totalSeconds / 3600; + builder.setLength(0); + return hours > 0 ? formatter.format("%d:%02d:%02d", hours, minutes, seconds).toString() + : formatter.format("%02d:%02d", minutes, seconds).toString(); + } + + /** + * Escapes a string so that it's safe for use as a file or directory name on at least FAT32 + * filesystems. FAT32 is the most restrictive of all filesystems still commonly used today. + * + *

For simplicity, this only handles common characters known to be illegal on FAT32: + * <, >, :, ", /, \, |, ?, and *. % is also escaped since it is used as the escape + * character. Escaping is performed in a consistent way so that no collisions occur and + * {@link #unescapeFileName(String)} can be used to retrieve the original file name. + * + * @param fileName File name to be escaped. + * @return An escaped file name which will be safe for use on at least FAT32 filesystems. + */ + public static String escapeFileName(String fileName) { + int length = fileName.length(); + int charactersToEscapeCount = 0; + for (int i = 0; i < length; i++) { + if (shouldEscapeCharacter(fileName.charAt(i))) { + charactersToEscapeCount++; + } + } + if (charactersToEscapeCount == 0) { + return fileName; + } + + int i = 0; + StringBuilder builder = new StringBuilder(length + charactersToEscapeCount * 2); + while (charactersToEscapeCount > 0) { + char c = fileName.charAt(i++); + if (shouldEscapeCharacter(c)) { + builder.append('%').append(Integer.toHexString(c)); + charactersToEscapeCount--; + } else { + builder.append(c); + } + } + if (i < length) { + builder.append(fileName, i, length); + } + return builder.toString(); + } + + private static boolean shouldEscapeCharacter(char c) { + switch (c) { + case '<': + case '>': + case ':': + case '"': + case '/': + case '\\': + case '|': + case '?': + case '*': + case '%': + return true; + default: + return false; + } + } + + /** + * Unescapes an escaped file or directory name back to its original value. + * + *

See {@link #escapeFileName(String)} for more information. + * + * @param fileName File name to be unescaped. + * @return The original value of the file name before it was escaped, or null if the escaped + * fileName seems invalid. + */ + public static @Nullable String unescapeFileName(String fileName) { + int length = fileName.length(); + int percentCharacterCount = 0; + for (int i = 0; i < length; i++) { + if (fileName.charAt(i) == '%') { + percentCharacterCount++; + } + } + if (percentCharacterCount == 0) { + return fileName; + } + + int expectedLength = length - percentCharacterCount * 2; + StringBuilder builder = new StringBuilder(expectedLength); + Matcher matcher = ESCAPED_CHARACTER_PATTERN.matcher(fileName); + int startOfNotEscaped = 0; + while (percentCharacterCount > 0 && matcher.find()) { + char unescapedCharacter = (char) Integer.parseInt(matcher.group(1), 16); + builder.append(fileName, startOfNotEscaped, matcher.start()).append(unescapedCharacter); + startOfNotEscaped = matcher.end(); + percentCharacterCount--; + } + if (startOfNotEscaped < length) { + builder.append(fileName, startOfNotEscaped, length); + } + if (builder.length() != expectedLength) { + return null; + } + return builder.toString(); + } + + /** + * A hacky method that always throws {@code t} even if {@code t} is a checked exception, + * and is not declared to be thrown. + */ + public static void sneakyThrow(Throwable t) { + sneakyThrowInternal(t); + } + + @SuppressWarnings("unchecked") + private static void sneakyThrowInternal(Throwable t) throws T { + throw (T) t; + } + + /** Recursively deletes a directory and its content. */ + public static void recursiveDelete(File fileOrDirectory) { + File[] directoryFiles = fileOrDirectory.listFiles(); + if (directoryFiles != null) { + for (File child : directoryFiles) { + recursiveDelete(child); + } + } + fileOrDirectory.delete(); + } + + /** Creates an empty directory in the directory returned by {@link Context#getCacheDir()}. */ + public static File createTempDirectory(Context context, String prefix) throws IOException { + File tempFile = createTempFile(context, prefix); + tempFile.delete(); // Delete the temp file. + tempFile.mkdir(); // Create a directory with the same name. + return tempFile; + } + + /** Creates a new empty file in the directory returned by {@link Context#getCacheDir()}. */ + public static File createTempFile(Context context, String prefix) throws IOException { + return File.createTempFile(prefix, null, context.getCacheDir()); + } + + /** + * Returns the result of updating a CRC-32 with the specified bytes in a "most significant bit + * first" order. + * + * @param bytes Array containing the bytes to update the crc value with. + * @param start The index to the first byte in the byte range to update the crc with. + * @param end The index after the last byte in the byte range to update the crc with. + * @param initialValue The initial value for the crc calculation. + * @return The result of updating the initial value with the specified bytes. + */ + public static int crc32(byte[] bytes, int start, int end, int initialValue) { + for (int i = start; i < end; i++) { + initialValue = (initialValue << 8) + ^ CRC32_BYTES_MSBF[((initialValue >>> 24) ^ (bytes[i] & 0xFF)) & 0xFF]; + } + return initialValue; + } + + /** + * Returns the result of updating a CRC-8 with the specified bytes in a "most significant bit + * first" order. + * + * @param bytes Array containing the bytes to update the crc value with. + * @param start The index to the first byte in the byte range to update the crc with. + * @param end The index after the last byte in the byte range to update the crc with. + * @param initialValue The initial value for the crc calculation. + * @return The result of updating the initial value with the specified bytes. + */ + public static int crc8(byte[] bytes, int start, int end, int initialValue) { + for (int i = start; i < end; i++) { + initialValue = CRC8_BYTES_MSBF[initialValue ^ (bytes[i] & 0xFF)]; + } + return initialValue; + } + + /** + * Returns the {@link C.NetworkType} of the current network connection. + * + * @param context A context to access the connectivity manager. + * @return The {@link C.NetworkType} of the current network connection. + */ + @C.NetworkType + public static int getNetworkType(Context context) { + if (context == null) { + // Note: This is for backward compatibility only (context used to be @Nullable). + return C.NETWORK_TYPE_UNKNOWN; + } + NetworkInfo networkInfo; + ConnectivityManager connectivityManager = + (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); + if (connectivityManager == null) { + return C.NETWORK_TYPE_UNKNOWN; + } + try { + networkInfo = connectivityManager.getActiveNetworkInfo(); + } catch (SecurityException e) { + // Expected if permission was revoked. + return C.NETWORK_TYPE_UNKNOWN; + } + if (networkInfo == null || !networkInfo.isConnected()) { + return C.NETWORK_TYPE_OFFLINE; + } + switch (networkInfo.getType()) { + case ConnectivityManager.TYPE_WIFI: + return C.NETWORK_TYPE_WIFI; + case ConnectivityManager.TYPE_WIMAX: + return C.NETWORK_TYPE_4G; + case ConnectivityManager.TYPE_MOBILE: + case ConnectivityManager.TYPE_MOBILE_DUN: + case ConnectivityManager.TYPE_MOBILE_HIPRI: + return getMobileNetworkType(networkInfo); + case ConnectivityManager.TYPE_ETHERNET: + return C.NETWORK_TYPE_ETHERNET; + default: // VPN, Bluetooth, Dummy. + return C.NETWORK_TYPE_OTHER; + } + } + + /** + * Returns the upper-case ISO 3166-1 alpha-2 country code of the current registered operator's MCC + * (Mobile Country Code), or the country code of the default Locale if not available. + * + * @param context A context to access the telephony service. If null, only the Locale can be used. + * @return The upper-case ISO 3166-1 alpha-2 country code, or an empty String if unavailable. + */ + public static String getCountryCode(@Nullable Context context) { + if (context != null) { + TelephonyManager telephonyManager = + (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); + if (telephonyManager != null) { + String countryCode = telephonyManager.getNetworkCountryIso(); + if (!TextUtils.isEmpty(countryCode)) { + return toUpperInvariant(countryCode); + } + } + } + return toUpperInvariant(Locale.getDefault().getCountry()); + } + + /** + * Returns a non-empty array of normalized IETF BCP 47 language tags for the system languages + * ordered by preference. + */ + public static String[] getSystemLanguageCodes() { + String[] systemLocales = getSystemLocales(); + for (int i = 0; i < systemLocales.length; i++) { + systemLocales[i] = normalizeLanguageCode(systemLocales[i]); + } + return systemLocales; + } + + /** + * Uncompresses the data in {@code input}. + * + * @param input Wraps the compressed input data. + * @param output Wraps an output buffer to be used to store the uncompressed data. If {@code + * output.data} isn't big enough to hold the uncompressed data, a new array is created. If + * {@code true} is returned then the output's position will be set to 0 and its limit will be + * set to the length of the uncompressed data. + * @param inflater If not null, used to uncompressed the input. Otherwise a new {@link Inflater} + * is created. + * @return Whether the input is uncompressed successfully. + */ + public static boolean inflate( + ParsableByteArray input, ParsableByteArray output, @Nullable Inflater inflater) { + if (input.bytesLeft() <= 0) { + return false; + } + byte[] outputData = output.data; + if (outputData.length < input.bytesLeft()) { + outputData = new byte[2 * input.bytesLeft()]; + } + if (inflater == null) { + inflater = new Inflater(); + } + inflater.setInput(input.data, input.getPosition(), input.bytesLeft()); + try { + int outputSize = 0; + while (true) { + outputSize += inflater.inflate(outputData, outputSize, outputData.length - outputSize); + if (inflater.finished()) { + output.reset(outputData, outputSize); + return true; + } + if (inflater.needsDictionary() || inflater.needsInput()) { + return false; + } + if (outputSize == outputData.length) { + outputData = Arrays.copyOf(outputData, outputData.length * 2); + } + } + } catch (DataFormatException e) { + return false; + } finally { + inflater.reset(); + } + } + + /** + * Returns whether the app is running on a TV device. + * + * @param context Any context. + * @return Whether the app is running on a TV device. + */ + public static boolean isTv(Context context) { + // See https://developer.android.com/training/tv/start/hardware.html#runtime-check. + UiModeManager uiModeManager = + (UiModeManager) context.getApplicationContext().getSystemService(UI_MODE_SERVICE); + return uiModeManager != null + && uiModeManager.getCurrentModeType() == Configuration.UI_MODE_TYPE_TELEVISION; + } + + /** + * Gets the size of the current mode of the default display, in pixels. + * + *

Note that due to application UI scaling, the number of pixels made available to applications + * (as reported by {@link Display#getSize(Point)} may differ from the mode's actual resolution (as + * reported by this function). For example, applications running on a display configured with a 4K + * mode may have their UI laid out and rendered in 1080p and then scaled up. Applications can take + * advantage of the full mode resolution through a {@link SurfaceView} using full size buffers. + * + * @param context Any context. + * @return The size of the current mode, in pixels. + */ + public static Point getCurrentDisplayModeSize(Context context) { + WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); + return getCurrentDisplayModeSize(context, windowManager.getDefaultDisplay()); + } + + /** + * Gets the size of the current mode of the specified display, in pixels. + * + *

Note that due to application UI scaling, the number of pixels made available to applications + * (as reported by {@link Display#getSize(Point)} may differ from the mode's actual resolution (as + * reported by this function). For example, applications running on a display configured with a 4K + * mode may have their UI laid out and rendered in 1080p and then scaled up. Applications can take + * advantage of the full mode resolution through a {@link SurfaceView} using full size buffers. + * + * @param context Any context. + * @param display The display whose size is to be returned. + * @return The size of the current mode, in pixels. + */ + public static Point getCurrentDisplayModeSize(Context context, Display display) { + if (Util.SDK_INT <= 29 && display.getDisplayId() == Display.DEFAULT_DISPLAY && isTv(context)) { + // On Android TVs it is common for the UI to be configured for a lower resolution than + // SurfaceViews can output. Before API 26 the Display object does not provide a way to + // identify this case, and up to and including API 28 many devices still do not correctly set + // their hardware compositor output size. + + // Sony Android TVs advertise support for 4k output via a system feature. + if ("Sony".equals(Util.MANUFACTURER) + && Util.MODEL.startsWith("BRAVIA") + && context.getPackageManager().hasSystemFeature("com.sony.dtv.hardware.panel.qfhd")) { + return new Point(3840, 2160); + } + + // Otherwise check the system property for display size. From API 28 treble may prevent the + // system from writing sys.display-size so we check vendor.display-size instead. + String displaySize = + Util.SDK_INT < 28 + ? getSystemProperty("sys.display-size") + : getSystemProperty("vendor.display-size"); + // If we managed to read the display size, attempt to parse it. + if (!TextUtils.isEmpty(displaySize)) { + try { + String[] displaySizeParts = split(displaySize.trim(), "x"); + if (displaySizeParts.length == 2) { + int width = Integer.parseInt(displaySizeParts[0]); + int height = Integer.parseInt(displaySizeParts[1]); + if (width > 0 && height > 0) { + return new Point(width, height); + } + } + } catch (NumberFormatException e) { + // Do nothing. + } + Log.e(TAG, "Invalid display size: " + displaySize); + } + } + + Point displaySize = new Point(); + if (Util.SDK_INT >= 23) { + getDisplaySizeV23(display, displaySize); + } else if (Util.SDK_INT >= 17) { + getDisplaySizeV17(display, displaySize); + } else { + getDisplaySizeV16(display, displaySize); + } + return displaySize; + } + + /** + * Extract renderer capabilities for the renderers created by the provided renderers factory. + * + * @param renderersFactory A {@link RenderersFactory}. + * @return The {@link RendererCapabilities} for each renderer created by the {@code + * renderersFactory}. + */ + public static RendererCapabilities[] getRendererCapabilities(RenderersFactory renderersFactory) { + Renderer[] renderers = + renderersFactory.createRenderers( + new Handler(), + new VideoRendererEventListener() {}, + new AudioRendererEventListener() {}, + (cues) -> {}, + (metadata) -> {}, + /* drmSessionManager= */ null); + RendererCapabilities[] capabilities = new RendererCapabilities[renderers.length]; + for (int i = 0; i < renderers.length; i++) { + capabilities[i] = renderers[i].getCapabilities(); + } + return capabilities; + } + + /** + * Returns a string representation of a {@code TRACK_TYPE_*} constant defined in {@link C}. + * + * @param trackType A {@code TRACK_TYPE_*} constant, + * @return A string representation of this constant. + */ + public static String getTrackTypeString(int trackType) { + switch (trackType) { + case C.TRACK_TYPE_AUDIO: + return "audio"; + case C.TRACK_TYPE_DEFAULT: + return "default"; + case C.TRACK_TYPE_METADATA: + return "metadata"; + case C.TRACK_TYPE_CAMERA_MOTION: + return "camera motion"; + case C.TRACK_TYPE_NONE: + return "none"; + case C.TRACK_TYPE_TEXT: + return "text"; + case C.TRACK_TYPE_VIDEO: + return "video"; + default: + return trackType >= C.TRACK_TYPE_CUSTOM_BASE ? "custom (" + trackType + ")" : "?"; + } + } + + @Nullable + private static String getSystemProperty(String name) { + try { + @SuppressLint("PrivateApi") + Class systemProperties = Class.forName("android.os.SystemProperties"); + Method getMethod = systemProperties.getMethod("get", String.class); + return (String) getMethod.invoke(systemProperties, name); + } catch (Exception e) { + Log.e(TAG, "Failed to read system property " + name, e); + return null; + } + } + + @TargetApi(23) + private static void getDisplaySizeV23(Display display, Point outSize) { + Display.Mode mode = display.getMode(); + outSize.x = mode.getPhysicalWidth(); + outSize.y = mode.getPhysicalHeight(); + } + + @TargetApi(17) + private static void getDisplaySizeV17(Display display, Point outSize) { + display.getRealSize(outSize); + } + + private static void getDisplaySizeV16(Display display, Point outSize) { + display.getSize(outSize); + } + + private static String[] getSystemLocales() { + Configuration config = Resources.getSystem().getConfiguration(); + return SDK_INT >= 24 + ? getSystemLocalesV24(config) + : new String[] {getLocaleLanguageTag(config.locale)}; + } + + @TargetApi(24) + private static String[] getSystemLocalesV24(Configuration config) { + return Util.split(config.getLocales().toLanguageTags(), ","); + } + + @TargetApi(21) + private static String getLocaleLanguageTagV21(Locale locale) { + return locale.toLanguageTag(); + } + + private static @C.NetworkType int getMobileNetworkType(NetworkInfo networkInfo) { + switch (networkInfo.getSubtype()) { + case TelephonyManager.NETWORK_TYPE_EDGE: + case TelephonyManager.NETWORK_TYPE_GPRS: + return C.NETWORK_TYPE_2G; + case TelephonyManager.NETWORK_TYPE_1xRTT: + case TelephonyManager.NETWORK_TYPE_CDMA: + case TelephonyManager.NETWORK_TYPE_EVDO_0: + case TelephonyManager.NETWORK_TYPE_EVDO_A: + case TelephonyManager.NETWORK_TYPE_EVDO_B: + case TelephonyManager.NETWORK_TYPE_HSDPA: + case TelephonyManager.NETWORK_TYPE_HSPA: + case TelephonyManager.NETWORK_TYPE_HSUPA: + case TelephonyManager.NETWORK_TYPE_IDEN: + case TelephonyManager.NETWORK_TYPE_UMTS: + case TelephonyManager.NETWORK_TYPE_EHRPD: + case TelephonyManager.NETWORK_TYPE_HSPAP: + case TelephonyManager.NETWORK_TYPE_TD_SCDMA: + return C.NETWORK_TYPE_3G; + case TelephonyManager.NETWORK_TYPE_LTE: + return C.NETWORK_TYPE_4G; + case TelephonyManager.NETWORK_TYPE_NR: + return C.NETWORK_TYPE_5G; + case TelephonyManager.NETWORK_TYPE_IWLAN: + return C.NETWORK_TYPE_WIFI; + case TelephonyManager.NETWORK_TYPE_GSM: + case TelephonyManager.NETWORK_TYPE_UNKNOWN: + default: // Future mobile network types. + return C.NETWORK_TYPE_CELLULAR_UNKNOWN; + } + } + + private static HashMap createIsoLanguageReplacementMap() { + String[] iso2Languages = Locale.getISOLanguages(); + HashMap replacedLanguages = + new HashMap<>( + /* initialCapacity= */ iso2Languages.length + additionalIsoLanguageReplacements.length); + for (String iso2 : iso2Languages) { + try { + // This returns the ISO 639-2/T code for the language. + String iso3 = new Locale(iso2).getISO3Language(); + if (!TextUtils.isEmpty(iso3)) { + replacedLanguages.put(iso3, iso2); + } + } catch (MissingResourceException e) { + // Shouldn't happen for list of known languages, but we don't want to throw either. + } + } + // Add additional replacement mappings. + for (int i = 0; i < additionalIsoLanguageReplacements.length; i += 2) { + replacedLanguages.put( + additionalIsoLanguageReplacements[i], additionalIsoLanguageReplacements[i + 1]); + } + return replacedLanguages; + } + + private static String maybeReplaceGrandfatheredLanguageTags(String languageTag) { + for (int i = 0; i < isoGrandfatheredTagReplacements.length; i += 2) { + if (languageTag.startsWith(isoGrandfatheredTagReplacements[i])) { + return isoGrandfatheredTagReplacements[i + 1] + + languageTag.substring(/* beginIndex= */ isoGrandfatheredTagReplacements[i].length()); + } + } + return languageTag; + } + + // Additional mapping from ISO3 to ISO2 language codes. + private static final String[] additionalIsoLanguageReplacements = + new String[] { + // Bibliographical codes defined in ISO 639-2/B, replaced by terminological code defined in + // ISO 639-2/T. See https://en.wikipedia.org/wiki/List_of_ISO_639-2_codes. + "alb", "sq", + "arm", "hy", + "baq", "eu", + "bur", "my", + "tib", "bo", + "chi", "zh", + "cze", "cs", + "dut", "nl", + "ger", "de", + "gre", "el", + "fre", "fr", + "geo", "ka", + "ice", "is", + "mac", "mk", + "mao", "mi", + "may", "ms", + "per", "fa", + "rum", "ro", + "scc", "hbs-srp", + "slo", "sk", + "wel", "cy", + // Deprecated 2-letter codes, replaced by modern equivalent (including macrolanguage) + // See https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes, "ISO 639:1988" + "id", "ms-ind", + "iw", "he", + "heb", "he", + "ji", "yi", + // Individual macrolanguage codes mapped back to full macrolanguage code. + // See https://en.wikipedia.org/wiki/ISO_639_macrolanguage + "in", "ms-ind", + "ind", "ms-ind", + "nb", "no-nob", + "nob", "no-nob", + "nn", "no-nno", + "nno", "no-nno", + "tw", "ak-twi", + "twi", "ak-twi", + "bs", "hbs-bos", + "bos", "hbs-bos", + "hr", "hbs-hrv", + "hrv", "hbs-hrv", + "sr", "hbs-srp", + "srp", "hbs-srp", + "cmn", "zh-cmn", + "hak", "zh-hak", + "nan", "zh-nan", + "hsn", "zh-hsn" + }; + + // "Grandfathered tags", replaced by modern equivalents (including macrolanguage) + // See https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry. + private static final String[] isoGrandfatheredTagReplacements = + new String[] { + "i-lux", "lb", + "i-hak", "zh-hak", + "i-navajo", "nv", + "no-bok", "no-nob", + "no-nyn", "no-nno", + "zh-guoyu", "zh-cmn", + "zh-hakka", "zh-hak", + "zh-min-nan", "zh-nan", + "zh-xiang", "zh-hsn" + }; + + /** + * Allows the CRC-32 calculation to be done byte by byte instead of bit per bit in the order "most + * significant bit first". + */ + private static final int[] CRC32_BYTES_MSBF = { + 0X00000000, 0X04C11DB7, 0X09823B6E, 0X0D4326D9, 0X130476DC, 0X17C56B6B, 0X1A864DB2, + 0X1E475005, 0X2608EDB8, 0X22C9F00F, 0X2F8AD6D6, 0X2B4BCB61, 0X350C9B64, 0X31CD86D3, + 0X3C8EA00A, 0X384FBDBD, 0X4C11DB70, 0X48D0C6C7, 0X4593E01E, 0X4152FDA9, 0X5F15ADAC, + 0X5BD4B01B, 0X569796C2, 0X52568B75, 0X6A1936C8, 0X6ED82B7F, 0X639B0DA6, 0X675A1011, + 0X791D4014, 0X7DDC5DA3, 0X709F7B7A, 0X745E66CD, 0X9823B6E0, 0X9CE2AB57, 0X91A18D8E, + 0X95609039, 0X8B27C03C, 0X8FE6DD8B, 0X82A5FB52, 0X8664E6E5, 0XBE2B5B58, 0XBAEA46EF, + 0XB7A96036, 0XB3687D81, 0XAD2F2D84, 0XA9EE3033, 0XA4AD16EA, 0XA06C0B5D, 0XD4326D90, + 0XD0F37027, 0XDDB056FE, 0XD9714B49, 0XC7361B4C, 0XC3F706FB, 0XCEB42022, 0XCA753D95, + 0XF23A8028, 0XF6FB9D9F, 0XFBB8BB46, 0XFF79A6F1, 0XE13EF6F4, 0XE5FFEB43, 0XE8BCCD9A, + 0XEC7DD02D, 0X34867077, 0X30476DC0, 0X3D044B19, 0X39C556AE, 0X278206AB, 0X23431B1C, + 0X2E003DC5, 0X2AC12072, 0X128E9DCF, 0X164F8078, 0X1B0CA6A1, 0X1FCDBB16, 0X018AEB13, + 0X054BF6A4, 0X0808D07D, 0X0CC9CDCA, 0X7897AB07, 0X7C56B6B0, 0X71159069, 0X75D48DDE, + 0X6B93DDDB, 0X6F52C06C, 0X6211E6B5, 0X66D0FB02, 0X5E9F46BF, 0X5A5E5B08, 0X571D7DD1, + 0X53DC6066, 0X4D9B3063, 0X495A2DD4, 0X44190B0D, 0X40D816BA, 0XACA5C697, 0XA864DB20, + 0XA527FDF9, 0XA1E6E04E, 0XBFA1B04B, 0XBB60ADFC, 0XB6238B25, 0XB2E29692, 0X8AAD2B2F, + 0X8E6C3698, 0X832F1041, 0X87EE0DF6, 0X99A95DF3, 0X9D684044, 0X902B669D, 0X94EA7B2A, + 0XE0B41DE7, 0XE4750050, 0XE9362689, 0XEDF73B3E, 0XF3B06B3B, 0XF771768C, 0XFA325055, + 0XFEF34DE2, 0XC6BCF05F, 0XC27DEDE8, 0XCF3ECB31, 0XCBFFD686, 0XD5B88683, 0XD1799B34, + 0XDC3ABDED, 0XD8FBA05A, 0X690CE0EE, 0X6DCDFD59, 0X608EDB80, 0X644FC637, 0X7A089632, + 0X7EC98B85, 0X738AAD5C, 0X774BB0EB, 0X4F040D56, 0X4BC510E1, 0X46863638, 0X42472B8F, + 0X5C007B8A, 0X58C1663D, 0X558240E4, 0X51435D53, 0X251D3B9E, 0X21DC2629, 0X2C9F00F0, + 0X285E1D47, 0X36194D42, 0X32D850F5, 0X3F9B762C, 0X3B5A6B9B, 0X0315D626, 0X07D4CB91, + 0X0A97ED48, 0X0E56F0FF, 0X1011A0FA, 0X14D0BD4D, 0X19939B94, 0X1D528623, 0XF12F560E, + 0XF5EE4BB9, 0XF8AD6D60, 0XFC6C70D7, 0XE22B20D2, 0XE6EA3D65, 0XEBA91BBC, 0XEF68060B, + 0XD727BBB6, 0XD3E6A601, 0XDEA580D8, 0XDA649D6F, 0XC423CD6A, 0XC0E2D0DD, 0XCDA1F604, + 0XC960EBB3, 0XBD3E8D7E, 0XB9FF90C9, 0XB4BCB610, 0XB07DABA7, 0XAE3AFBA2, 0XAAFBE615, + 0XA7B8C0CC, 0XA379DD7B, 0X9B3660C6, 0X9FF77D71, 0X92B45BA8, 0X9675461F, 0X8832161A, + 0X8CF30BAD, 0X81B02D74, 0X857130C3, 0X5D8A9099, 0X594B8D2E, 0X5408ABF7, 0X50C9B640, + 0X4E8EE645, 0X4A4FFBF2, 0X470CDD2B, 0X43CDC09C, 0X7B827D21, 0X7F436096, 0X7200464F, + 0X76C15BF8, 0X68860BFD, 0X6C47164A, 0X61043093, 0X65C52D24, 0X119B4BE9, 0X155A565E, + 0X18197087, 0X1CD86D30, 0X029F3D35, 0X065E2082, 0X0B1D065B, 0X0FDC1BEC, 0X3793A651, + 0X3352BBE6, 0X3E119D3F, 0X3AD08088, 0X2497D08D, 0X2056CD3A, 0X2D15EBE3, 0X29D4F654, + 0XC5A92679, 0XC1683BCE, 0XCC2B1D17, 0XC8EA00A0, 0XD6AD50A5, 0XD26C4D12, 0XDF2F6BCB, + 0XDBEE767C, 0XE3A1CBC1, 0XE760D676, 0XEA23F0AF, 0XEEE2ED18, 0XF0A5BD1D, 0XF464A0AA, + 0XF9278673, 0XFDE69BC4, 0X89B8FD09, 0X8D79E0BE, 0X803AC667, 0X84FBDBD0, 0X9ABC8BD5, + 0X9E7D9662, 0X933EB0BB, 0X97FFAD0C, 0XAFB010B1, 0XAB710D06, 0XA6322BDF, 0XA2F33668, + 0XBCB4666D, 0XB8757BDA, 0XB5365D03, 0XB1F740B4 + }; + + /** + * Allows the CRC-8 calculation to be done byte by byte instead of bit per bit in the order "most + * significant bit first". + */ + private static final int[] CRC8_BYTES_MSBF = { + 0x00, 0x07, 0x0E, 0x09, 0x1C, 0x1B, 0x12, 0x15, 0x38, 0x3F, 0x36, 0x31, 0x24, 0x23, 0x2A, + 0x2D, 0x70, 0x77, 0x7E, 0x79, 0x6C, 0x6B, 0x62, 0x65, 0x48, 0x4F, 0x46, 0x41, 0x54, 0x53, + 0x5A, 0x5D, 0xE0, 0xE7, 0xEE, 0xE9, 0xFC, 0xFB, 0xF2, 0xF5, 0xD8, 0xDF, 0xD6, 0xD1, 0xC4, + 0xC3, 0xCA, 0xCD, 0x90, 0x97, 0x9E, 0x99, 0x8C, 0x8B, 0x82, 0x85, 0xA8, 0xAF, 0xA6, 0xA1, + 0xB4, 0xB3, 0xBA, 0xBD, 0xC7, 0xC0, 0xC9, 0xCE, 0xDB, 0xDC, 0xD5, 0xD2, 0xFF, 0xF8, 0xF1, + 0xF6, 0xE3, 0xE4, 0xED, 0xEA, 0xB7, 0xB0, 0xB9, 0xBE, 0xAB, 0xAC, 0xA5, 0xA2, 0x8F, 0x88, + 0x81, 0x86, 0x93, 0x94, 0x9D, 0x9A, 0x27, 0x20, 0x29, 0x2E, 0x3B, 0x3C, 0x35, 0x32, 0x1F, + 0x18, 0x11, 0x16, 0x03, 0x04, 0x0D, 0x0A, 0x57, 0x50, 0x59, 0x5E, 0x4B, 0x4C, 0x45, 0x42, + 0x6F, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7D, 0x7A, 0x89, 0x8E, 0x87, 0x80, 0x95, 0x92, 0x9B, + 0x9C, 0xB1, 0xB6, 0xBF, 0xB8, 0xAD, 0xAA, 0xA3, 0xA4, 0xF9, 0xFE, 0xF7, 0xF0, 0xE5, 0xE2, + 0xEB, 0xEC, 0xC1, 0xC6, 0xCF, 0xC8, 0xDD, 0xDA, 0xD3, 0xD4, 0x69, 0x6E, 0x67, 0x60, 0x75, + 0x72, 0x7B, 0x7C, 0x51, 0x56, 0x5F, 0x58, 0x4D, 0x4A, 0x43, 0x44, 0x19, 0x1E, 0x17, 0x10, + 0x05, 0x02, 0x0B, 0x0C, 0x21, 0x26, 0x2F, 0x28, 0x3D, 0x3A, 0x33, 0x34, 0x4E, 0x49, 0x40, + 0x47, 0x52, 0x55, 0x5C, 0x5B, 0x76, 0x71, 0x78, 0x7F, 0x6A, 0x6D, 0x64, 0x63, 0x3E, 0x39, + 0x30, 0x37, 0x22, 0x25, 0x2C, 0x2B, 0x06, 0x01, 0x08, 0x0F, 0x1A, 0x1D, 0x14, 0x13, 0xAE, + 0xA9, 0xA0, 0xA7, 0xB2, 0xB5, 0xBC, 0xBB, 0x96, 0x91, 0x98, 0x9F, 0x8A, 0x8D, 0x84, 0x83, + 0xDE, 0xD9, 0xD0, 0xD7, 0xC2, 0xC5, 0xCC, 0xCB, 0xE6, 0xE1, 0xE8, 0xEF, 0xFA, 0xFD, 0xF4, + 0xF3 + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/XmlPullParserUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/XmlPullParserUtil.java new file mode 100644 index 0000000000..7b56886dba --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/XmlPullParserUtil.java @@ -0,0 +1,131 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; + +import androidx.annotation.Nullable; +import org.xmlpull.v1.XmlPullParser; +import org.xmlpull.v1.XmlPullParserException; + +/** + * {@link XmlPullParser} utility methods. + */ +public final class XmlPullParserUtil { + + private XmlPullParserUtil() {} + + /** + * Returns whether the current event is an end tag with the specified name. + * + * @param xpp The {@link XmlPullParser} to query. + * @param name The specified name. + * @return Whether the current event is an end tag with the specified name. + * @throws XmlPullParserException If an error occurs querying the parser. + */ + public static boolean isEndTag(XmlPullParser xpp, String name) throws XmlPullParserException { + return isEndTag(xpp) && xpp.getName().equals(name); + } + + /** + * Returns whether the current event is an end tag. + * + * @param xpp The {@link XmlPullParser} to query. + * @return Whether the current event is an end tag. + * @throws XmlPullParserException If an error occurs querying the parser. + */ + public static boolean isEndTag(XmlPullParser xpp) throws XmlPullParserException { + return xpp.getEventType() == XmlPullParser.END_TAG; + } + + /** + * Returns whether the current event is a start tag with the specified name. + * + * @param xpp The {@link XmlPullParser} to query. + * @param name The specified name. + * @return Whether the current event is a start tag with the specified name. + * @throws XmlPullParserException If an error occurs querying the parser. + */ + public static boolean isStartTag(XmlPullParser xpp, String name) throws XmlPullParserException { + return isStartTag(xpp) && xpp.getName().equals(name); + } + + /** + * Returns whether the current event is a start tag. + * + * @param xpp The {@link XmlPullParser} to query. + * @return Whether the current event is a start tag. + * @throws XmlPullParserException If an error occurs querying the parser. + */ + public static boolean isStartTag(XmlPullParser xpp) throws XmlPullParserException { + return xpp.getEventType() == XmlPullParser.START_TAG; + } + + /** + * Returns whether the current event is a start tag with the specified name. If the current event + * has a raw name then its prefix is stripped before matching. + * + * @param xpp The {@link XmlPullParser} to query. + * @param name The specified name. + * @return Whether the current event is a start tag with the specified name. + * @throws XmlPullParserException If an error occurs querying the parser. + */ + public static boolean isStartTagIgnorePrefix(XmlPullParser xpp, String name) + throws XmlPullParserException { + return isStartTag(xpp) && stripPrefix(xpp.getName()).equals(name); + } + + /** + * Returns the value of an attribute of the current start tag. + * + * @param xpp The {@link XmlPullParser} to query. + * @param attributeName The name of the attribute. + * @return The value of the attribute, or null if the current event is not a start tag or if no + * such attribute was found. + */ + public static @Nullable String getAttributeValue(XmlPullParser xpp, String attributeName) { + int attributeCount = xpp.getAttributeCount(); + for (int i = 0; i < attributeCount; i++) { + if (xpp.getAttributeName(i).equals(attributeName)) { + return xpp.getAttributeValue(i); + } + } + return null; + } + + /** + * Returns the value of an attribute of the current start tag. Any raw attribute names in the + * current start tag have their prefixes stripped before matching. + * + * @param xpp The {@link XmlPullParser} to query. + * @param attributeName The name of the attribute. + * @return The value of the attribute, or null if the current event is not a start tag or if no + * such attribute was found. + */ + public static @Nullable String getAttributeValueIgnorePrefix( + XmlPullParser xpp, String attributeName) { + int attributeCount = xpp.getAttributeCount(); + for (int i = 0; i < attributeCount; i++) { + if (stripPrefix(xpp.getAttributeName(i)).equals(attributeName)) { + return xpp.getAttributeValue(i); + } + } + return null; + } + + private static String stripPrefix(String name) { + int prefixSeparatorIndex = name.indexOf(':'); + return prefixSeparatorIndex == -1 ? name : name.substring(prefixSeparatorIndex + 1); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/package-info.java new file mode 100644 index 0000000000..49ee4a4d4d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/util/package-info.java @@ -0,0 +1,17 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.util; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/AvcConfig.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/AvcConfig.java new file mode 100644 index 0000000000..2026a27ff7 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/AvcConfig.java @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.CodecSpecificDataUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil.SpsData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.ArrayList; +import java.util.List; + +/** + * AVC configuration data. + */ +public final class AvcConfig { + + public final List initializationData; + public final int nalUnitLengthFieldLength; + public final int width; + public final int height; + public final float pixelWidthAspectRatio; + + /** + * Parses AVC configuration data. + * + * @param data A {@link ParsableByteArray}, whose position is set to the start of the AVC + * configuration data to parse. + * @return A parsed representation of the HEVC configuration data. + * @throws ParserException If an error occurred parsing the data. + */ + public static AvcConfig parse(ParsableByteArray data) throws ParserException { + try { + data.skipBytes(4); // Skip to the AVCDecoderConfigurationRecord (defined in 14496-15) + int nalUnitLengthFieldLength = (data.readUnsignedByte() & 0x3) + 1; + if (nalUnitLengthFieldLength == 3) { + throw new IllegalStateException(); + } + List initializationData = new ArrayList<>(); + int numSequenceParameterSets = data.readUnsignedByte() & 0x1F; + for (int j = 0; j < numSequenceParameterSets; j++) { + initializationData.add(buildNalUnitForChild(data)); + } + int numPictureParameterSets = data.readUnsignedByte(); + for (int j = 0; j < numPictureParameterSets; j++) { + initializationData.add(buildNalUnitForChild(data)); + } + + int width = Format.NO_VALUE; + int height = Format.NO_VALUE; + float pixelWidthAspectRatio = 1; + if (numSequenceParameterSets > 0) { + byte[] sps = initializationData.get(0); + SpsData spsData = NalUnitUtil.parseSpsNalUnit(initializationData.get(0), + nalUnitLengthFieldLength, sps.length); + width = spsData.width; + height = spsData.height; + pixelWidthAspectRatio = spsData.pixelWidthAspectRatio; + } + return new AvcConfig(initializationData, nalUnitLengthFieldLength, width, height, + pixelWidthAspectRatio); + } catch (ArrayIndexOutOfBoundsException e) { + throw new ParserException("Error parsing AVC config", e); + } + } + + private AvcConfig(List initializationData, int nalUnitLengthFieldLength, + int width, int height, float pixelWidthAspectRatio) { + this.initializationData = initializationData; + this.nalUnitLengthFieldLength = nalUnitLengthFieldLength; + this.width = width; + this.height = height; + this.pixelWidthAspectRatio = pixelWidthAspectRatio; + } + + private static byte[] buildNalUnitForChild(ParsableByteArray data) { + int length = data.readUnsignedShort(); + int offset = data.getPosition(); + data.skipBytes(length); + return CodecSpecificDataUtil.buildNalUnit(data.data, offset, length); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/ColorInfo.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/ColorInfo.java new file mode 100644 index 0000000000..7eed4e3eaf --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/ColorInfo.java @@ -0,0 +1,150 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import android.os.Parcel; +import android.os.Parcelable; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.util.Arrays; + +/** + * Stores color info. + */ +public final class ColorInfo implements Parcelable { + + /** + * The color space of the video. Valid values are {@link C#COLOR_SPACE_BT601}, {@link + * C#COLOR_SPACE_BT709}, {@link C#COLOR_SPACE_BT2020} or {@link Format#NO_VALUE} if unknown. + */ + @C.ColorSpace + public final int colorSpace; + + /** + * The color range of the video. Valid values are {@link C#COLOR_RANGE_LIMITED}, {@link + * C#COLOR_RANGE_FULL} or {@link Format#NO_VALUE} if unknown. + */ + @C.ColorRange + public final int colorRange; + + /** + * The color transfer characteristicks of the video. Valid values are {@link + * C#COLOR_TRANSFER_HLG}, {@link C#COLOR_TRANSFER_ST2084}, {@link C#COLOR_TRANSFER_SDR} or {@link + * Format#NO_VALUE} if unknown. + */ + @C.ColorTransfer + public final int colorTransfer; + + /** HdrStaticInfo as defined in CTA-861.3, or null if none specified. */ + @Nullable public final byte[] hdrStaticInfo; + + // Lazily initialized hashcode. + private int hashCode; + + /** + * Constructs the ColorInfo. + * + * @param colorSpace The color space of the video. + * @param colorRange The color range of the video. + * @param colorTransfer The color transfer characteristics of the video. + * @param hdrStaticInfo HdrStaticInfo as defined in CTA-861.3, or null if none specified. + */ + public ColorInfo( + @C.ColorSpace int colorSpace, + @C.ColorRange int colorRange, + @C.ColorTransfer int colorTransfer, + @Nullable byte[] hdrStaticInfo) { + this.colorSpace = colorSpace; + this.colorRange = colorRange; + this.colorTransfer = colorTransfer; + this.hdrStaticInfo = hdrStaticInfo; + } + + @SuppressWarnings("ResourceType") + /* package */ ColorInfo(Parcel in) { + colorSpace = in.readInt(); + colorRange = in.readInt(); + colorTransfer = in.readInt(); + boolean hasHdrStaticInfo = Util.readBoolean(in); + hdrStaticInfo = hasHdrStaticInfo ? in.createByteArray() : null; + } + + // Parcelable implementation. + @Override + public boolean equals(@Nullable Object obj) { + if (this == obj) { + return true; + } + if (obj == null || getClass() != obj.getClass()) { + return false; + } + ColorInfo other = (ColorInfo) obj; + return colorSpace == other.colorSpace + && colorRange == other.colorRange + && colorTransfer == other.colorTransfer + && Arrays.equals(hdrStaticInfo, other.hdrStaticInfo); + } + + @Override + public String toString() { + return "ColorInfo(" + colorSpace + ", " + colorRange + ", " + colorTransfer + + ", " + (hdrStaticInfo != null) + ")"; + } + + @Override + public int hashCode() { + if (hashCode == 0) { + int result = 17; + result = 31 * result + colorSpace; + result = 31 * result + colorRange; + result = 31 * result + colorTransfer; + result = 31 * result + Arrays.hashCode(hdrStaticInfo); + hashCode = result; + } + return hashCode; + } + + @Override + public int describeContents() { + return 0; + } + + @Override + public void writeToParcel(Parcel dest, int flags) { + dest.writeInt(colorSpace); + dest.writeInt(colorRange); + dest.writeInt(colorTransfer); + Util.writeBoolean(dest, hdrStaticInfo != null); + if (hdrStaticInfo != null) { + dest.writeByteArray(hdrStaticInfo); + } + } + + public static final Parcelable.Creator CREATOR = + new Parcelable.Creator() { + @Override + public ColorInfo createFromParcel(Parcel in) { + return new ColorInfo(in); + } + + @Override + public ColorInfo[] newArray(int size) { + return new ColorInfo[size]; + } + }; +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/DolbyVisionConfig.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/DolbyVisionConfig.java new file mode 100644 index 0000000000..bfc1f814d2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/DolbyVisionConfig.java @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; + +/** Dolby Vision configuration data. */ +public final class DolbyVisionConfig { + + /** + * Parses Dolby Vision configuration data. + * + * @param data A {@link ParsableByteArray}, whose position is set to the start of the Dolby Vision + * configuration data to parse. + * @return The {@link DolbyVisionConfig} corresponding to the configuration, or {@code null} if + * the configuration isn't supported. + */ + @Nullable + public static DolbyVisionConfig parse(ParsableByteArray data) { + data.skipBytes(2); // dv_version_major, dv_version_minor + int profileData = data.readUnsignedByte(); + int dvProfile = (profileData >> 1); + int dvLevel = ((profileData & 0x1) << 5) | ((data.readUnsignedByte() >> 3) & 0x1F); + String codecsPrefix; + if (dvProfile == 4 || dvProfile == 5 || dvProfile == 7) { + codecsPrefix = "dvhe"; + } else if (dvProfile == 8) { + codecsPrefix = "hev1"; + } else if (dvProfile == 9) { + codecsPrefix = "avc3"; + } else { + return null; + } + String codecs = codecsPrefix + ".0" + dvProfile + ".0" + dvLevel; + return new DolbyVisionConfig(dvProfile, dvLevel, codecs); + } + + /** The profile number. */ + public final int profile; + /** The level number. */ + public final int level; + /** The RFC 6381 codecs string. */ + public final String codecs; + + private DolbyVisionConfig(int profile, int level, String codecs) { + this.profile = profile; + this.level = level; + this.codecs = codecs; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/DummySurface.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/DummySurface.java new file mode 100644 index 0000000000..abfb8b0952 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/DummySurface.java @@ -0,0 +1,228 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.EGLSurfaceTexture.SECURE_MODE_NONE; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.EGLSurfaceTexture.SECURE_MODE_PROTECTED_PBUFFER; +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.EGLSurfaceTexture.SECURE_MODE_SURFACELESS_CONTEXT; + +import android.annotation.TargetApi; +import android.content.Context; +import android.graphics.SurfaceTexture; +import android.os.Handler; +import android.os.Handler.Callback; +import android.os.HandlerThread; +import android.os.Message; +import android.view.Surface; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.EGLSurfaceTexture; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.EGLSurfaceTexture.SecureMode; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.GlUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + +/** A dummy {@link Surface}. */ +@TargetApi(17) +public final class DummySurface extends Surface { + + private static final String TAG = "DummySurface"; + + /** + * Whether the surface is secure. + */ + public final boolean secure; + + private static @SecureMode int secureMode; + private static boolean secureModeInitialized; + + private final DummySurfaceThread thread; + private boolean threadReleased; + + /** + * Returns whether the device supports secure dummy surfaces. + * + * @param context Any {@link Context}. + * @return Whether the device supports secure dummy surfaces. + */ + public static synchronized boolean isSecureSupported(Context context) { + if (!secureModeInitialized) { + secureMode = getSecureMode(context); + secureModeInitialized = true; + } + return secureMode != SECURE_MODE_NONE; + } + + /** + * Returns a newly created dummy surface. The surface must be released by calling {@link #release} + * when it's no longer required. + *

+ * Must only be called if {@link Util#SDK_INT} is 17 or higher. + * + * @param context Any {@link Context}. + * @param secure Whether a secure surface is required. Must only be requested if + * {@link #isSecureSupported(Context)} returns {@code true}. + * @throws IllegalStateException If a secure surface is requested on a device for which + * {@link #isSecureSupported(Context)} returns {@code false}. + */ + public static DummySurface newInstanceV17(Context context, boolean secure) { + assertApiLevel17OrHigher(); + Assertions.checkState(!secure || isSecureSupported(context)); + DummySurfaceThread thread = new DummySurfaceThread(); + return thread.init(secure ? secureMode : SECURE_MODE_NONE); + } + + private DummySurface(DummySurfaceThread thread, SurfaceTexture surfaceTexture, boolean secure) { + super(surfaceTexture); + this.thread = thread; + this.secure = secure; + } + + @Override + public void release() { + super.release(); + // The Surface may be released multiple times (explicitly and by Surface.finalize()). The + // implementation of super.release() has its own deduplication logic. Below we need to + // deduplicate ourselves. Synchronization is required as we don't control the thread on which + // Surface.finalize() is called. + synchronized (thread) { + if (!threadReleased) { + thread.release(); + threadReleased = true; + } + } + } + + private static void assertApiLevel17OrHigher() { + if (Util.SDK_INT < 17) { + throw new UnsupportedOperationException("Unsupported prior to API level 17"); + } + } + + @SecureMode + private static int getSecureMode(Context context) { + if (GlUtil.isProtectedContentExtensionSupported(context)) { + if (GlUtil.isSurfacelessContextExtensionSupported()) { + return SECURE_MODE_SURFACELESS_CONTEXT; + } else { + // If we can't use surfaceless contexts, we use a protected 1 * 1 pixel buffer surface. + // This may require support for EXT_protected_surface, but in practice it works on some + // devices that don't have that extension. See also + // https://github.com/google/ExoPlayer/issues/3558. + return SECURE_MODE_PROTECTED_PBUFFER; + } + } else { + return SECURE_MODE_NONE; + } + } + + private static class DummySurfaceThread extends HandlerThread implements Callback { + + private static final int MSG_INIT = 1; + private static final int MSG_RELEASE = 2; + + private @MonotonicNonNull EGLSurfaceTexture eglSurfaceTexture; + private @MonotonicNonNull Handler handler; + @Nullable private Error initError; + @Nullable private RuntimeException initException; + @Nullable private DummySurface surface; + + public DummySurfaceThread() { + super("dummySurface"); + } + + public DummySurface init(@SecureMode int secureMode) { + start(); + handler = new Handler(getLooper(), /* callback= */ this); + eglSurfaceTexture = new EGLSurfaceTexture(handler); + boolean wasInterrupted = false; + synchronized (this) { + handler.obtainMessage(MSG_INIT, secureMode, 0).sendToTarget(); + while (surface == null && initException == null && initError == null) { + try { + wait(); + } catch (InterruptedException e) { + wasInterrupted = true; + } + } + } + if (wasInterrupted) { + // Restore the interrupted status. + Thread.currentThread().interrupt(); + } + if (initException != null) { + throw initException; + } else if (initError != null) { + throw initError; + } else { + return Assertions.checkNotNull(surface); + } + } + + public void release() { + Assertions.checkNotNull(handler); + handler.sendEmptyMessage(MSG_RELEASE); + } + + @Override + public boolean handleMessage(Message msg) { + switch (msg.what) { + case MSG_INIT: + try { + initInternal(/* secureMode= */ msg.arg1); + } catch (RuntimeException e) { + Log.e(TAG, "Failed to initialize dummy surface", e); + initException = e; + } catch (Error e) { + Log.e(TAG, "Failed to initialize dummy surface", e); + initError = e; + } finally { + synchronized (this) { + notify(); + } + } + return true; + case MSG_RELEASE: + try { + releaseInternal(); + } catch (Throwable e) { + Log.e(TAG, "Failed to release dummy surface", e); + } finally { + quit(); + } + return true; + default: + return true; + } + } + + private void initInternal(@SecureMode int secureMode) { + Assertions.checkNotNull(eglSurfaceTexture); + eglSurfaceTexture.init(secureMode); + this.surface = + new DummySurface( + this, eglSurfaceTexture.getSurfaceTexture(), secureMode != SECURE_MODE_NONE); + } + + private void releaseInternal() { + Assertions.checkNotNull(eglSurfaceTexture); + eglSurfaceTexture.release(); + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/HevcConfig.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/HevcConfig.java new file mode 100644 index 0000000000..844712146a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/HevcConfig.java @@ -0,0 +1,91 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ParserException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NalUnitUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import java.util.Collections; +import java.util.List; + +/** + * HEVC configuration data. + */ +public final class HevcConfig { + + @Nullable public final List initializationData; + public final int nalUnitLengthFieldLength; + + /** + * Parses HEVC configuration data. + * + * @param data A {@link ParsableByteArray}, whose position is set to the start of the HEVC + * configuration data to parse. + * @return A parsed representation of the HEVC configuration data. + * @throws ParserException If an error occurred parsing the data. + */ + public static HevcConfig parse(ParsableByteArray data) throws ParserException { + try { + data.skipBytes(21); // Skip to the NAL unit length size field. + int lengthSizeMinusOne = data.readUnsignedByte() & 0x03; + + // Calculate the combined size of all VPS/SPS/PPS bitstreams. + int numberOfArrays = data.readUnsignedByte(); + int csdLength = 0; + int csdStartPosition = data.getPosition(); + for (int i = 0; i < numberOfArrays; i++) { + data.skipBytes(1); // completeness (1), nal_unit_type (7) + int numberOfNalUnits = data.readUnsignedShort(); + for (int j = 0; j < numberOfNalUnits; j++) { + int nalUnitLength = data.readUnsignedShort(); + csdLength += 4 + nalUnitLength; // Start code and NAL unit. + data.skipBytes(nalUnitLength); + } + } + + // Concatenate the codec-specific data into a single buffer. + data.setPosition(csdStartPosition); + byte[] buffer = new byte[csdLength]; + int bufferPosition = 0; + for (int i = 0; i < numberOfArrays; i++) { + data.skipBytes(1); // completeness (1), nal_unit_type (7) + int numberOfNalUnits = data.readUnsignedShort(); + for (int j = 0; j < numberOfNalUnits; j++) { + int nalUnitLength = data.readUnsignedShort(); + System.arraycopy(NalUnitUtil.NAL_START_CODE, 0, buffer, bufferPosition, + NalUnitUtil.NAL_START_CODE.length); + bufferPosition += NalUnitUtil.NAL_START_CODE.length; + System + .arraycopy(data.data, data.getPosition(), buffer, bufferPosition, nalUnitLength); + bufferPosition += nalUnitLength; + data.skipBytes(nalUnitLength); + } + } + + List initializationData = csdLength == 0 ? null : Collections.singletonList(buffer); + return new HevcConfig(initializationData, lengthSizeMinusOne + 1); + } catch (ArrayIndexOutOfBoundsException e) { + throw new ParserException("Error parsing HEVC config", e); + } + } + + private HevcConfig(@Nullable List initializationData, int nalUnitLengthFieldLength) { + this.initializationData = initializationData; + this.nalUnitLengthFieldLength = nalUnitLengthFieldLength; + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/MediaCodecVideoRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/MediaCodecVideoRenderer.java new file mode 100644 index 0000000000..1627b70a28 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/MediaCodecVideoRenderer.java @@ -0,0 +1,1873 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import android.annotation.SuppressLint; +import android.annotation.TargetApi; +import android.content.Context; +import android.graphics.Point; +import android.media.MediaCodec; +import android.media.MediaCodecInfo.CodecCapabilities; +import android.media.MediaCodecInfo.CodecProfileLevel; +import android.media.MediaCrypto; +import android.media.MediaFormat; +import android.os.Bundle; +import android.os.Handler; +import android.os.Message; +import android.os.SystemClock; +import android.util.Pair; +import android.view.Surface; +import androidx.annotation.CallSuper; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlayer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.PlayerMessage.Target; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmInitData; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.FrameworkMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecInfo; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecSelector; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaCodecUtil.DecoderQueryException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.mediacodec.MediaFormatUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.source.MediaSource; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TraceUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoRendererEventListener.EventDispatcher; +import java.nio.ByteBuffer; +import java.util.Collections; +import java.util.List; + +/** + * Decodes and renders video using {@link MediaCodec}. + * + *

This renderer accepts the following messages sent via {@link ExoPlayer#createMessage(Target)} + * on the playback thread: + * + *

    + *
  • Message with type {@link C#MSG_SET_SURFACE} to set the output surface. The message payload + * should be the target {@link Surface}, or null. + *
  • Message with type {@link C#MSG_SET_SCALING_MODE} to set the video scaling mode. The message + * payload should be one of the integer scaling modes in {@link C.VideoScalingMode}. Note that + * the scaling mode only applies if the {@link Surface} targeted by this renderer is owned by + * a {@link android.view.SurfaceView}. + *
+ */ +public class MediaCodecVideoRenderer extends MediaCodecRenderer { + + private static final String TAG = "MediaCodecVideoRenderer"; + private static final String KEY_CROP_LEFT = "crop-left"; + private static final String KEY_CROP_RIGHT = "crop-right"; + private static final String KEY_CROP_BOTTOM = "crop-bottom"; + private static final String KEY_CROP_TOP = "crop-top"; + + // Long edge length in pixels for standard video formats, in decreasing in order. + private static final int[] STANDARD_LONG_EDGE_VIDEO_PX = new int[] { + 1920, 1600, 1440, 1280, 960, 854, 640, 540, 480}; + + // Generally there is zero or one pending output stream offset. We track more offsets to allow for + // pending output streams that have fewer frames than the codec latency. + private static final int MAX_PENDING_OUTPUT_STREAM_OFFSET_COUNT = 10; + /** + * Scale factor for the initial maximum input size used to configure the codec in non-adaptive + * playbacks. See {@link #getCodecMaxValues(MediaCodecInfo, Format, Format[])}. + */ + private static final float INITIAL_FORMAT_MAX_INPUT_SIZE_SCALE_FACTOR = 1.5f; + + /** Magic frame render timestamp that indicates the EOS in tunneling mode. */ + private static final long TUNNELING_EOS_PRESENTATION_TIME_US = Long.MAX_VALUE; + + /** A {@link DecoderException} with additional surface information. */ + public static final class VideoDecoderException extends DecoderException { + + /** The {@link System#identityHashCode(Object)} of the surface when the exception occurred. */ + public final int surfaceIdentityHashCode; + + /** Whether the surface was valid when the exception occurred. */ + public final boolean isSurfaceValid; + + public VideoDecoderException( + Throwable cause, @Nullable MediaCodecInfo codecInfo, @Nullable Surface surface) { + super(cause, codecInfo); + surfaceIdentityHashCode = System.identityHashCode(surface); + isSurfaceValid = surface == null || surface.isValid(); + } + } + + private static boolean evaluatedDeviceNeedsSetOutputSurfaceWorkaround; + private static boolean deviceNeedsSetOutputSurfaceWorkaround; + + private final Context context; + private final VideoFrameReleaseTimeHelper frameReleaseTimeHelper; + private final EventDispatcher eventDispatcher; + private final long allowedJoiningTimeMs; + private final int maxDroppedFramesToNotify; + private final boolean deviceNeedsNoPostProcessWorkaround; + private final long[] pendingOutputStreamOffsetsUs; + private final long[] pendingOutputStreamSwitchTimesUs; + + private CodecMaxValues codecMaxValues; + private boolean codecNeedsSetOutputSurfaceWorkaround; + private boolean codecHandlesHdr10PlusOutOfBandMetadata; + + private Surface surface; + private Surface dummySurface; + @C.VideoScalingMode + private int scalingMode; + private boolean renderedFirstFrame; + private long initialPositionUs; + private long joiningDeadlineMs; + private long droppedFrameAccumulationStartTimeMs; + private int droppedFrames; + private int consecutiveDroppedFrameCount; + private int buffersInCodecCount; + private long lastRenderTimeUs; + + private int pendingRotationDegrees; + private float pendingPixelWidthHeightRatio; + @Nullable private MediaFormat currentMediaFormat; + private int currentWidth; + private int currentHeight; + private int currentUnappliedRotationDegrees; + private float currentPixelWidthHeightRatio; + private int reportedWidth; + private int reportedHeight; + private int reportedUnappliedRotationDegrees; + private float reportedPixelWidthHeightRatio; + + private boolean tunneling; + private int tunnelingAudioSessionId; + /* package */ @Nullable OnFrameRenderedListenerV23 tunnelingOnFrameRenderedListener; + + private long lastInputTimeUs; + private long outputStreamOffsetUs; + private int pendingOutputStreamOffsetCount; + @Nullable private VideoFrameMetadataListener frameMetadataListener; + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + */ + public MediaCodecVideoRenderer(Context context, MediaCodecSelector mediaCodecSelector) { + this(context, mediaCodecSelector, 0); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param allowedJoiningTimeMs The maximum duration in milliseconds for which this video renderer + * can attempt to seamlessly join an ongoing playback. + */ + public MediaCodecVideoRenderer(Context context, MediaCodecSelector mediaCodecSelector, + long allowedJoiningTimeMs) { + this( + context, + mediaCodecSelector, + allowedJoiningTimeMs, + /* eventHandler= */ null, + /* eventListener= */ null, + /* maxDroppedFramesToNotify= */ -1); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param allowedJoiningTimeMs The maximum duration in milliseconds for which this video renderer + * can attempt to seamlessly join an ongoing playback. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param maxDroppedFramesToNotify The maximum number of frames that can be dropped between + * invocations of {@link VideoRendererEventListener#onDroppedFrames(int, long)}. + */ + @SuppressWarnings("deprecation") + public MediaCodecVideoRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + long allowedJoiningTimeMs, + @Nullable Handler eventHandler, + @Nullable VideoRendererEventListener eventListener, + int maxDroppedFramesToNotify) { + this( + context, + mediaCodecSelector, + allowedJoiningTimeMs, + /* drmSessionManager= */ null, + /* playClearSamplesWithoutKeys= */ false, + eventHandler, + eventListener, + maxDroppedFramesToNotify); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param allowedJoiningTimeMs The maximum duration in milliseconds for which this video renderer + * can attempt to seamlessly join an ongoing playback. + * @param drmSessionManager For use with encrypted content. May be null if support for encrypted + * content is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param maxDroppedFramesToNotify The maximum number of frames that can be dropped between + * invocations of {@link VideoRendererEventListener#onDroppedFrames(int, long)}. + * @deprecated Use {@link #MediaCodecVideoRenderer(Context, MediaCodecSelector, long, boolean, + * Handler, VideoRendererEventListener, int)} instead, and pass DRM-related parameters to the + * {@link MediaSource} factories. + */ + @Deprecated + @SuppressWarnings("deprecation") + public MediaCodecVideoRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + long allowedJoiningTimeMs, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + @Nullable Handler eventHandler, + @Nullable VideoRendererEventListener eventListener, + int maxDroppedFramesToNotify) { + this( + context, + mediaCodecSelector, + allowedJoiningTimeMs, + drmSessionManager, + playClearSamplesWithoutKeys, + /* enableDecoderFallback= */ false, + eventHandler, + eventListener, + maxDroppedFramesToNotify); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param allowedJoiningTimeMs The maximum duration in milliseconds for which this video renderer + * can attempt to seamlessly join an ongoing playback. + * @param enableDecoderFallback Whether to enable fallback to lower-priority decoders if decoder + * initialization fails. This may result in using a decoder that is slower/less efficient than + * the primary decoder. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param maxDroppedFramesToNotify The maximum number of frames that can be dropped between + * invocations of {@link VideoRendererEventListener#onDroppedFrames(int, long)}. + */ + @SuppressWarnings("deprecation") + public MediaCodecVideoRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + long allowedJoiningTimeMs, + boolean enableDecoderFallback, + @Nullable Handler eventHandler, + @Nullable VideoRendererEventListener eventListener, + int maxDroppedFramesToNotify) { + this( + context, + mediaCodecSelector, + allowedJoiningTimeMs, + /* drmSessionManager= */ null, + /* playClearSamplesWithoutKeys= */ false, + enableDecoderFallback, + eventHandler, + eventListener, + maxDroppedFramesToNotify); + } + + /** + * @param context A context. + * @param mediaCodecSelector A decoder selector. + * @param allowedJoiningTimeMs The maximum duration in milliseconds for which this video renderer + * can attempt to seamlessly join an ongoing playback. + * @param drmSessionManager For use with encrypted content. May be null if support for encrypted + * content is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + * @param enableDecoderFallback Whether to enable fallback to lower-priority decoders if decoder + * initialization fails. This may result in using a decoder that is slower/less efficient than + * the primary decoder. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param maxDroppedFramesToNotify The maximum number of frames that can be dropped between + * invocations of {@link VideoRendererEventListener#onDroppedFrames(int, long)}. + * @deprecated Use {@link #MediaCodecVideoRenderer(Context, MediaCodecSelector, long, boolean, + * Handler, VideoRendererEventListener, int)} instead, and pass DRM-related parameters to the + * {@link MediaSource} factories. + */ + @Deprecated + public MediaCodecVideoRenderer( + Context context, + MediaCodecSelector mediaCodecSelector, + long allowedJoiningTimeMs, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys, + boolean enableDecoderFallback, + @Nullable Handler eventHandler, + @Nullable VideoRendererEventListener eventListener, + int maxDroppedFramesToNotify) { + super( + C.TRACK_TYPE_VIDEO, + mediaCodecSelector, + drmSessionManager, + playClearSamplesWithoutKeys, + enableDecoderFallback, + /* assumedMinimumCodecOperatingRate= */ 30); + this.allowedJoiningTimeMs = allowedJoiningTimeMs; + this.maxDroppedFramesToNotify = maxDroppedFramesToNotify; + this.context = context.getApplicationContext(); + frameReleaseTimeHelper = new VideoFrameReleaseTimeHelper(this.context); + eventDispatcher = new EventDispatcher(eventHandler, eventListener); + deviceNeedsNoPostProcessWorkaround = deviceNeedsNoPostProcessWorkaround(); + pendingOutputStreamOffsetsUs = new long[MAX_PENDING_OUTPUT_STREAM_OFFSET_COUNT]; + pendingOutputStreamSwitchTimesUs = new long[MAX_PENDING_OUTPUT_STREAM_OFFSET_COUNT]; + outputStreamOffsetUs = C.TIME_UNSET; + lastInputTimeUs = C.TIME_UNSET; + joiningDeadlineMs = C.TIME_UNSET; + currentWidth = Format.NO_VALUE; + currentHeight = Format.NO_VALUE; + currentPixelWidthHeightRatio = Format.NO_VALUE; + pendingPixelWidthHeightRatio = Format.NO_VALUE; + scalingMode = C.VIDEO_SCALING_MODE_DEFAULT; + clearReportedVideoSize(); + } + + @Override + @Capabilities + protected int supportsFormat( + MediaCodecSelector mediaCodecSelector, + @Nullable DrmSessionManager drmSessionManager, + Format format) + throws DecoderQueryException { + String mimeType = format.sampleMimeType; + if (!MimeTypes.isVideo(mimeType)) { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_TYPE); + } + @Nullable DrmInitData drmInitData = format.drmInitData; + // Assume encrypted content requires secure decoders. + boolean requiresSecureDecryption = drmInitData != null; + List decoderInfos = + getDecoderInfos( + mediaCodecSelector, + format, + requiresSecureDecryption, + /* requiresTunnelingDecoder= */ false); + if (requiresSecureDecryption && decoderInfos.isEmpty()) { + // No secure decoders are available. Fall back to non-secure decoders. + decoderInfos = + getDecoderInfos( + mediaCodecSelector, + format, + /* requiresSecureDecoder= */ false, + /* requiresTunnelingDecoder= */ false); + } + if (decoderInfos.isEmpty()) { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_SUBTYPE); + } + boolean supportsFormatDrm = + drmInitData == null + || FrameworkMediaCrypto.class.equals(format.exoMediaCryptoType) + || (format.exoMediaCryptoType == null + && supportsFormatDrm(drmSessionManager, drmInitData)); + if (!supportsFormatDrm) { + return RendererCapabilities.create(FORMAT_UNSUPPORTED_DRM); + } + // Check capabilities for the first decoder in the list, which takes priority. + MediaCodecInfo decoderInfo = decoderInfos.get(0); + boolean isFormatSupported = decoderInfo.isFormatSupported(format); + @AdaptiveSupport + int adaptiveSupport = + decoderInfo.isSeamlessAdaptationSupported(format) + ? ADAPTIVE_SEAMLESS + : ADAPTIVE_NOT_SEAMLESS; + @TunnelingSupport int tunnelingSupport = TUNNELING_NOT_SUPPORTED; + if (isFormatSupported) { + List tunnelingDecoderInfos = + getDecoderInfos( + mediaCodecSelector, + format, + requiresSecureDecryption, + /* requiresTunnelingDecoder= */ true); + if (!tunnelingDecoderInfos.isEmpty()) { + MediaCodecInfo tunnelingDecoderInfo = tunnelingDecoderInfos.get(0); + if (tunnelingDecoderInfo.isFormatSupported(format) + && tunnelingDecoderInfo.isSeamlessAdaptationSupported(format)) { + tunnelingSupport = TUNNELING_SUPPORTED; + } + } + } + @FormatSupport + int formatSupport = isFormatSupported ? FORMAT_HANDLED : FORMAT_EXCEEDS_CAPABILITIES; + return RendererCapabilities.create(formatSupport, adaptiveSupport, tunnelingSupport); + } + + @Override + protected List getDecoderInfos( + MediaCodecSelector mediaCodecSelector, Format format, boolean requiresSecureDecoder) + throws DecoderQueryException { + return getDecoderInfos(mediaCodecSelector, format, requiresSecureDecoder, tunneling); + } + + private static List getDecoderInfos( + MediaCodecSelector mediaCodecSelector, + Format format, + boolean requiresSecureDecoder, + boolean requiresTunnelingDecoder) + throws DecoderQueryException { + @Nullable String mimeType = format.sampleMimeType; + if (mimeType == null) { + return Collections.emptyList(); + } + List decoderInfos = + mediaCodecSelector.getDecoderInfos( + mimeType, requiresSecureDecoder, requiresTunnelingDecoder); + decoderInfos = MediaCodecUtil.getDecoderInfosSortedByFormatSupport(decoderInfos, format); + if (MimeTypes.VIDEO_DOLBY_VISION.equals(mimeType)) { + // Fall back to H.264/AVC or H.265/HEVC for the relevant DV profiles. + @Nullable + Pair codecProfileAndLevel = MediaCodecUtil.getCodecProfileAndLevel(format); + if (codecProfileAndLevel != null) { + int profile = codecProfileAndLevel.first; + if (profile == CodecProfileLevel.DolbyVisionProfileDvheDtr + || profile == CodecProfileLevel.DolbyVisionProfileDvheSt) { + decoderInfos.addAll( + mediaCodecSelector.getDecoderInfos( + MimeTypes.VIDEO_H265, requiresSecureDecoder, requiresTunnelingDecoder)); + } else if (profile == CodecProfileLevel.DolbyVisionProfileDvavSe) { + decoderInfos.addAll( + mediaCodecSelector.getDecoderInfos( + MimeTypes.VIDEO_H264, requiresSecureDecoder, requiresTunnelingDecoder)); + } + } + } + return Collections.unmodifiableList(decoderInfos); + } + + @Override + protected void onEnabled(boolean joining) throws ExoPlaybackException { + super.onEnabled(joining); + int oldTunnelingAudioSessionId = tunnelingAudioSessionId; + tunnelingAudioSessionId = getConfiguration().tunnelingAudioSessionId; + tunneling = tunnelingAudioSessionId != C.AUDIO_SESSION_ID_UNSET; + if (tunnelingAudioSessionId != oldTunnelingAudioSessionId) { + releaseCodec(); + } + eventDispatcher.enabled(decoderCounters); + frameReleaseTimeHelper.enable(); + } + + @Override + protected void onStreamChanged(Format[] formats, long offsetUs) throws ExoPlaybackException { + if (outputStreamOffsetUs == C.TIME_UNSET) { + outputStreamOffsetUs = offsetUs; + } else { + if (pendingOutputStreamOffsetCount == pendingOutputStreamOffsetsUs.length) { + Log.w(TAG, "Too many stream changes, so dropping offset: " + + pendingOutputStreamOffsetsUs[pendingOutputStreamOffsetCount - 1]); + } else { + pendingOutputStreamOffsetCount++; + } + pendingOutputStreamOffsetsUs[pendingOutputStreamOffsetCount - 1] = offsetUs; + pendingOutputStreamSwitchTimesUs[pendingOutputStreamOffsetCount - 1] = lastInputTimeUs; + } + super.onStreamChanged(formats, offsetUs); + } + + @Override + protected void onPositionReset(long positionUs, boolean joining) throws ExoPlaybackException { + super.onPositionReset(positionUs, joining); + clearRenderedFirstFrame(); + initialPositionUs = C.TIME_UNSET; + consecutiveDroppedFrameCount = 0; + lastInputTimeUs = C.TIME_UNSET; + if (pendingOutputStreamOffsetCount != 0) { + outputStreamOffsetUs = pendingOutputStreamOffsetsUs[pendingOutputStreamOffsetCount - 1]; + pendingOutputStreamOffsetCount = 0; + } + if (joining) { + setJoiningDeadlineMs(); + } else { + joiningDeadlineMs = C.TIME_UNSET; + } + } + + @Override + public boolean isReady() { + if (super.isReady() && (renderedFirstFrame || (dummySurface != null && surface == dummySurface) + || getCodec() == null || tunneling)) { + // Ready. If we were joining then we've now joined, so clear the joining deadline. + joiningDeadlineMs = C.TIME_UNSET; + return true; + } else if (joiningDeadlineMs == C.TIME_UNSET) { + // Not joining. + return false; + } else if (SystemClock.elapsedRealtime() < joiningDeadlineMs) { + // Joining and still within the joining deadline. + return true; + } else { + // The joining deadline has been exceeded. Give up and clear the deadline. + joiningDeadlineMs = C.TIME_UNSET; + return false; + } + } + + @Override + protected void onStarted() { + super.onStarted(); + droppedFrames = 0; + droppedFrameAccumulationStartTimeMs = SystemClock.elapsedRealtime(); + lastRenderTimeUs = SystemClock.elapsedRealtime() * 1000; + } + + @Override + protected void onStopped() { + joiningDeadlineMs = C.TIME_UNSET; + maybeNotifyDroppedFrames(); + super.onStopped(); + } + + @Override + protected void onDisabled() { + lastInputTimeUs = C.TIME_UNSET; + outputStreamOffsetUs = C.TIME_UNSET; + pendingOutputStreamOffsetCount = 0; + currentMediaFormat = null; + clearReportedVideoSize(); + clearRenderedFirstFrame(); + frameReleaseTimeHelper.disable(); + tunnelingOnFrameRenderedListener = null; + try { + super.onDisabled(); + } finally { + eventDispatcher.disabled(decoderCounters); + } + } + + @Override + protected void onReset() { + try { + super.onReset(); + } finally { + if (dummySurface != null) { + if (surface == dummySurface) { + surface = null; + } + dummySurface.release(); + dummySurface = null; + } + } + } + + @Override + public void handleMessage(int messageType, @Nullable Object message) throws ExoPlaybackException { + if (messageType == C.MSG_SET_SURFACE) { + setSurface((Surface) message); + } else if (messageType == C.MSG_SET_SCALING_MODE) { + scalingMode = (Integer) message; + MediaCodec codec = getCodec(); + if (codec != null) { + codec.setVideoScalingMode(scalingMode); + } + } else if (messageType == C.MSG_SET_VIDEO_FRAME_METADATA_LISTENER) { + frameMetadataListener = (VideoFrameMetadataListener) message; + } else { + super.handleMessage(messageType, message); + } + } + + private void setSurface(Surface surface) throws ExoPlaybackException { + if (surface == null) { + // Use a dummy surface if possible. + if (dummySurface != null) { + surface = dummySurface; + } else { + MediaCodecInfo codecInfo = getCodecInfo(); + if (codecInfo != null && shouldUseDummySurface(codecInfo)) { + dummySurface = DummySurface.newInstanceV17(context, codecInfo.secure); + surface = dummySurface; + } + } + } + // We only need to update the codec if the surface has changed. + if (this.surface != surface) { + this.surface = surface; + @State int state = getState(); + MediaCodec codec = getCodec(); + if (codec != null) { + if (Util.SDK_INT >= 23 && surface != null && !codecNeedsSetOutputSurfaceWorkaround) { + setOutputSurfaceV23(codec, surface); + } else { + releaseCodec(); + maybeInitCodec(); + } + } + if (surface != null && surface != dummySurface) { + // If we know the video size, report it again immediately. + maybeRenotifyVideoSizeChanged(); + // We haven't rendered to the new surface yet. + clearRenderedFirstFrame(); + if (state == STATE_STARTED) { + setJoiningDeadlineMs(); + } + } else { + // The surface has been removed. + clearReportedVideoSize(); + clearRenderedFirstFrame(); + } + } else if (surface != null && surface != dummySurface) { + // The surface is set and unchanged. If we know the video size and/or have already rendered to + // the surface, report these again immediately. + maybeRenotifyVideoSizeChanged(); + maybeRenotifyRenderedFirstFrame(); + } + } + + @Override + protected boolean shouldInitCodec(MediaCodecInfo codecInfo) { + return surface != null || shouldUseDummySurface(codecInfo); + } + + @Override + protected boolean getCodecNeedsEosPropagation() { + // Since API 23, onFrameRenderedListener allows for detection of the renderer EOS. + return tunneling && Util.SDK_INT < 23; + } + + @Override + protected void configureCodec( + MediaCodecInfo codecInfo, + MediaCodec codec, + Format format, + @Nullable MediaCrypto crypto, + float codecOperatingRate) { + String codecMimeType = codecInfo.codecMimeType; + codecMaxValues = getCodecMaxValues(codecInfo, format, getStreamFormats()); + MediaFormat mediaFormat = + getMediaFormat( + format, + codecMimeType, + codecMaxValues, + codecOperatingRate, + deviceNeedsNoPostProcessWorkaround, + tunnelingAudioSessionId); + if (surface == null) { + Assertions.checkState(shouldUseDummySurface(codecInfo)); + if (dummySurface == null) { + dummySurface = DummySurface.newInstanceV17(context, codecInfo.secure); + } + surface = dummySurface; + } + codec.configure(mediaFormat, surface, crypto, 0); + if (Util.SDK_INT >= 23 && tunneling) { + tunnelingOnFrameRenderedListener = new OnFrameRenderedListenerV23(codec); + } + } + + @Override + protected @KeepCodecResult int canKeepCodec( + MediaCodec codec, MediaCodecInfo codecInfo, Format oldFormat, Format newFormat) { + if (codecInfo.isSeamlessAdaptationSupported( + oldFormat, newFormat, /* isNewFormatComplete= */ true) + && newFormat.width <= codecMaxValues.width + && newFormat.height <= codecMaxValues.height + && getMaxInputSize(codecInfo, newFormat) <= codecMaxValues.inputSize) { + return oldFormat.initializationDataEquals(newFormat) + ? KEEP_CODEC_RESULT_YES_WITHOUT_RECONFIGURATION + : KEEP_CODEC_RESULT_YES_WITH_RECONFIGURATION; + } + return KEEP_CODEC_RESULT_NO; + } + + @CallSuper + @Override + protected void releaseCodec() { + try { + super.releaseCodec(); + } finally { + buffersInCodecCount = 0; + } + } + + @CallSuper + @Override + protected boolean flushOrReleaseCodec() { + try { + return super.flushOrReleaseCodec(); + } finally { + buffersInCodecCount = 0; + } + } + + @Override + protected float getCodecOperatingRateV23( + float operatingRate, Format format, Format[] streamFormats) { + // Use the highest known stream frame-rate up front, to avoid having to reconfigure the codec + // should an adaptive switch to that stream occur. + float maxFrameRate = -1; + for (Format streamFormat : streamFormats) { + float streamFrameRate = streamFormat.frameRate; + if (streamFrameRate != Format.NO_VALUE) { + maxFrameRate = Math.max(maxFrameRate, streamFrameRate); + } + } + return maxFrameRate == -1 ? CODEC_OPERATING_RATE_UNSET : (maxFrameRate * operatingRate); + } + + @Override + protected void onCodecInitialized(String name, long initializedTimestampMs, + long initializationDurationMs) { + eventDispatcher.decoderInitialized(name, initializedTimestampMs, initializationDurationMs); + codecNeedsSetOutputSurfaceWorkaround = codecNeedsSetOutputSurfaceWorkaround(name); + codecHandlesHdr10PlusOutOfBandMetadata = + Assertions.checkNotNull(getCodecInfo()).isHdr10PlusOutOfBandMetadataSupported(); + } + + @Override + protected void onInputFormatChanged(FormatHolder formatHolder) throws ExoPlaybackException { + super.onInputFormatChanged(formatHolder); + Format newFormat = formatHolder.format; + eventDispatcher.inputFormatChanged(newFormat); + pendingPixelWidthHeightRatio = newFormat.pixelWidthHeightRatio; + pendingRotationDegrees = newFormat.rotationDegrees; + } + + /** + * Called immediately before an input buffer is queued into the codec. + * + * @param buffer The buffer to be queued. + */ + @CallSuper + @Override + protected void onQueueInputBuffer(DecoderInputBuffer buffer) { + // In tunneling mode the device may do frame rate conversion, so in general we can't keep track + // of the number of buffers in the codec. + if (!tunneling) { + buffersInCodecCount++; + } + lastInputTimeUs = Math.max(buffer.timeUs, lastInputTimeUs); + if (Util.SDK_INT < 23 && tunneling) { + // In tunneled mode before API 23 we don't have a way to know when the buffer is output, so + // treat it as if it were output immediately. + onProcessedTunneledBuffer(buffer.timeUs); + } + } + + @Override + protected void onOutputFormatChanged(MediaCodec codec, MediaFormat outputMediaFormat) { + currentMediaFormat = outputMediaFormat; + boolean hasCrop = + outputMediaFormat.containsKey(KEY_CROP_RIGHT) + && outputMediaFormat.containsKey(KEY_CROP_LEFT) + && outputMediaFormat.containsKey(KEY_CROP_BOTTOM) + && outputMediaFormat.containsKey(KEY_CROP_TOP); + int width = + hasCrop + ? outputMediaFormat.getInteger(KEY_CROP_RIGHT) + - outputMediaFormat.getInteger(KEY_CROP_LEFT) + + 1 + : outputMediaFormat.getInteger(MediaFormat.KEY_WIDTH); + int height = + hasCrop + ? outputMediaFormat.getInteger(KEY_CROP_BOTTOM) + - outputMediaFormat.getInteger(KEY_CROP_TOP) + + 1 + : outputMediaFormat.getInteger(MediaFormat.KEY_HEIGHT); + processOutputFormat(codec, width, height); + } + + @Override + protected void handleInputBufferSupplementalData(DecoderInputBuffer buffer) + throws ExoPlaybackException { + if (!codecHandlesHdr10PlusOutOfBandMetadata) { + return; + } + ByteBuffer data = Assertions.checkNotNull(buffer.supplementalData); + if (data.remaining() >= 7) { + // Check for HDR10+ out-of-band metadata. See User_data_registered_itu_t_t35 in ST 2094-40. + byte ituTT35CountryCode = data.get(); + int ituTT35TerminalProviderCode = data.getShort(); + int ituTT35TerminalProviderOrientedCode = data.getShort(); + byte applicationIdentifier = data.get(); + byte applicationVersion = data.get(); + data.position(0); + if (ituTT35CountryCode == (byte) 0xB5 + && ituTT35TerminalProviderCode == 0x003C + && ituTT35TerminalProviderOrientedCode == 0x0001 + && applicationIdentifier == 4 + && applicationVersion == 0) { + // The metadata size may vary so allocate a new array every time. This is not too + // inefficient because the metadata is only a few tens of bytes. + byte[] hdr10PlusInfo = new byte[data.remaining()]; + data.get(hdr10PlusInfo); + data.position(0); + // If codecHandlesHdr10PlusOutOfBandMetadata is true, this is an API 29 or later build. + setHdr10PlusInfoV29(getCodec(), hdr10PlusInfo); + } + } + } + + @Override + protected boolean processOutputBuffer( + long positionUs, + long elapsedRealtimeUs, + MediaCodec codec, + ByteBuffer buffer, + int bufferIndex, + int bufferFlags, + long bufferPresentationTimeUs, + boolean isDecodeOnlyBuffer, + boolean isLastBuffer, + Format format) + throws ExoPlaybackException { + if (initialPositionUs == C.TIME_UNSET) { + initialPositionUs = positionUs; + } + + long presentationTimeUs = bufferPresentationTimeUs - outputStreamOffsetUs; + + if (isDecodeOnlyBuffer && !isLastBuffer) { + skipOutputBuffer(codec, bufferIndex, presentationTimeUs); + return true; + } + + long earlyUs = bufferPresentationTimeUs - positionUs; + if (surface == dummySurface) { + // Skip frames in sync with playback, so we'll be at the right frame if the mode changes. + if (isBufferLate(earlyUs)) { + skipOutputBuffer(codec, bufferIndex, presentationTimeUs); + return true; + } + return false; + } + + long elapsedRealtimeNowUs = SystemClock.elapsedRealtime() * 1000; + long elapsedSinceLastRenderUs = elapsedRealtimeNowUs - lastRenderTimeUs; + boolean isStarted = getState() == STATE_STARTED; + // Don't force output until we joined and the position reached the current stream. + boolean forceRenderOutputBuffer = + joiningDeadlineMs == C.TIME_UNSET + && positionUs >= outputStreamOffsetUs + && (!renderedFirstFrame + || (isStarted && shouldForceRenderOutputBuffer(earlyUs, elapsedSinceLastRenderUs))); + if (forceRenderOutputBuffer) { + long releaseTimeNs = System.nanoTime(); + notifyFrameMetadataListener(presentationTimeUs, releaseTimeNs, format, currentMediaFormat); + if (Util.SDK_INT >= 21) { + renderOutputBufferV21(codec, bufferIndex, presentationTimeUs, releaseTimeNs); + } else { + renderOutputBuffer(codec, bufferIndex, presentationTimeUs); + } + return true; + } + + if (!isStarted || positionUs == initialPositionUs) { + return false; + } + + // Fine-grained adjustment of earlyUs based on the elapsed time since the start of the current + // iteration of the rendering loop. + long elapsedSinceStartOfLoopUs = elapsedRealtimeNowUs - elapsedRealtimeUs; + earlyUs -= elapsedSinceStartOfLoopUs; + + // Compute the buffer's desired release time in nanoseconds. + long systemTimeNs = System.nanoTime(); + long unadjustedFrameReleaseTimeNs = systemTimeNs + (earlyUs * 1000); + + // Apply a timestamp adjustment, if there is one. + long adjustedReleaseTimeNs = frameReleaseTimeHelper.adjustReleaseTime( + bufferPresentationTimeUs, unadjustedFrameReleaseTimeNs); + earlyUs = (adjustedReleaseTimeNs - systemTimeNs) / 1000; + + boolean treatDroppedBuffersAsSkipped = joiningDeadlineMs != C.TIME_UNSET; + if (shouldDropBuffersToKeyframe(earlyUs, elapsedRealtimeUs, isLastBuffer) + && maybeDropBuffersToKeyframe( + codec, bufferIndex, presentationTimeUs, positionUs, treatDroppedBuffersAsSkipped)) { + return false; + } else if (shouldDropOutputBuffer(earlyUs, elapsedRealtimeUs, isLastBuffer)) { + if (treatDroppedBuffersAsSkipped) { + skipOutputBuffer(codec, bufferIndex, presentationTimeUs); + } else { + dropOutputBuffer(codec, bufferIndex, presentationTimeUs); + } + return true; + } + + if (Util.SDK_INT >= 21) { + // Let the underlying framework time the release. + if (earlyUs < 50000) { + notifyFrameMetadataListener( + presentationTimeUs, adjustedReleaseTimeNs, format, currentMediaFormat); + renderOutputBufferV21(codec, bufferIndex, presentationTimeUs, adjustedReleaseTimeNs); + return true; + } + } else { + // We need to time the release ourselves. + if (earlyUs < 30000) { + if (earlyUs > 11000) { + // We're a little too early to render the frame. Sleep until the frame can be rendered. + // Note: The 11ms threshold was chosen fairly arbitrarily. + try { + // Subtracting 10000 rather than 11000 ensures the sleep time will be at least 1ms. + Thread.sleep((earlyUs - 10000) / 1000); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + return false; + } + } + notifyFrameMetadataListener( + presentationTimeUs, adjustedReleaseTimeNs, format, currentMediaFormat); + renderOutputBuffer(codec, bufferIndex, presentationTimeUs); + return true; + } + } + + // We're either not playing, or it's not time to render the frame yet. + return false; + } + + private void processOutputFormat(MediaCodec codec, int width, int height) { + currentWidth = width; + currentHeight = height; + currentPixelWidthHeightRatio = pendingPixelWidthHeightRatio; + if (Util.SDK_INT >= 21) { + // On API level 21 and above the decoder applies the rotation when rendering to the surface. + // Hence currentUnappliedRotation should always be 0. For 90 and 270 degree rotations, we need + // to flip the width, height and pixel aspect ratio to reflect the rotation that was applied. + if (pendingRotationDegrees == 90 || pendingRotationDegrees == 270) { + int rotatedHeight = currentWidth; + currentWidth = currentHeight; + currentHeight = rotatedHeight; + currentPixelWidthHeightRatio = 1 / currentPixelWidthHeightRatio; + } + } else { + // On API level 20 and below the decoder does not apply the rotation. + currentUnappliedRotationDegrees = pendingRotationDegrees; + } + // Must be applied each time the output MediaFormat changes. + codec.setVideoScalingMode(scalingMode); + } + + private void notifyFrameMetadataListener( + long presentationTimeUs, long releaseTimeNs, Format format, MediaFormat mediaFormat) { + if (frameMetadataListener != null) { + frameMetadataListener.onVideoFrameAboutToBeRendered( + presentationTimeUs, releaseTimeNs, format, mediaFormat); + } + } + + /** + * Returns the offset that should be subtracted from {@code bufferPresentationTimeUs} in {@link + * #processOutputBuffer(long, long, MediaCodec, ByteBuffer, int, int, long, boolean, boolean, + * Format)} to get the playback position with respect to the media. + */ + protected long getOutputStreamOffsetUs() { + return outputStreamOffsetUs; + } + + /** Called when a buffer was processed in tunneling mode. */ + protected void onProcessedTunneledBuffer(long presentationTimeUs) { + @Nullable Format format = updateOutputFormatForTime(presentationTimeUs); + if (format != null) { + processOutputFormat(getCodec(), format.width, format.height); + } + maybeNotifyVideoSizeChanged(); + decoderCounters.renderedOutputBufferCount++; + maybeNotifyRenderedFirstFrame(); + onProcessedOutputBuffer(presentationTimeUs); + } + + /** Called when a output EOS was received in tunneling mode. */ + private void onProcessedTunneledEndOfStream() { + setPendingOutputEndOfStream(); + } + + /** + * Called when an output buffer is successfully processed. + * + * @param presentationTimeUs The timestamp associated with the output buffer. + */ + @CallSuper + @Override + protected void onProcessedOutputBuffer(long presentationTimeUs) { + if (!tunneling) { + buffersInCodecCount--; + } + while (pendingOutputStreamOffsetCount != 0 + && presentationTimeUs >= pendingOutputStreamSwitchTimesUs[0]) { + outputStreamOffsetUs = pendingOutputStreamOffsetsUs[0]; + pendingOutputStreamOffsetCount--; + System.arraycopy( + pendingOutputStreamOffsetsUs, + /* srcPos= */ 1, + pendingOutputStreamOffsetsUs, + /* destPos= */ 0, + pendingOutputStreamOffsetCount); + System.arraycopy( + pendingOutputStreamSwitchTimesUs, + /* srcPos= */ 1, + pendingOutputStreamSwitchTimesUs, + /* destPos= */ 0, + pendingOutputStreamOffsetCount); + clearRenderedFirstFrame(); + } + } + + /** + * Returns whether the buffer being processed should be dropped. + * + * @param earlyUs The time until the buffer should be presented in microseconds. A negative value + * indicates that the buffer is late. + * @param elapsedRealtimeUs {@link android.os.SystemClock#elapsedRealtime()} in microseconds, + * measured at the start of the current iteration of the rendering loop. + * @param isLastBuffer Whether the buffer is the last buffer in the current stream. + */ + protected boolean shouldDropOutputBuffer( + long earlyUs, long elapsedRealtimeUs, boolean isLastBuffer) { + return isBufferLate(earlyUs) && !isLastBuffer; + } + + /** + * Returns whether to drop all buffers from the buffer being processed to the keyframe at or after + * the current playback position, if possible. + * + * @param earlyUs The time until the current buffer should be presented in microseconds. A + * negative value indicates that the buffer is late. + * @param elapsedRealtimeUs {@link android.os.SystemClock#elapsedRealtime()} in microseconds, + * measured at the start of the current iteration of the rendering loop. + * @param isLastBuffer Whether the buffer is the last buffer in the current stream. + */ + protected boolean shouldDropBuffersToKeyframe( + long earlyUs, long elapsedRealtimeUs, boolean isLastBuffer) { + return isBufferVeryLate(earlyUs) && !isLastBuffer; + } + + /** + * Returns whether to force rendering an output buffer. + * + * @param earlyUs The time until the current buffer should be presented in microseconds. A + * negative value indicates that the buffer is late. + * @param elapsedSinceLastRenderUs The elapsed time since the last output buffer was rendered, in + * microseconds. + * @return Returns whether to force rendering an output buffer. + */ + protected boolean shouldForceRenderOutputBuffer(long earlyUs, long elapsedSinceLastRenderUs) { + // Force render late buffers every 100ms to avoid frozen video effect. + return isBufferLate(earlyUs) && elapsedSinceLastRenderUs > 100000; + } + + /** + * Skips the output buffer with the specified index. + * + * @param codec The codec that owns the output buffer. + * @param index The index of the output buffer to skip. + * @param presentationTimeUs The presentation time of the output buffer, in microseconds. + */ + protected void skipOutputBuffer(MediaCodec codec, int index, long presentationTimeUs) { + TraceUtil.beginSection("skipVideoBuffer"); + codec.releaseOutputBuffer(index, false); + TraceUtil.endSection(); + decoderCounters.skippedOutputBufferCount++; + } + + /** + * Drops the output buffer with the specified index. + * + * @param codec The codec that owns the output buffer. + * @param index The index of the output buffer to drop. + * @param presentationTimeUs The presentation time of the output buffer, in microseconds. + */ + protected void dropOutputBuffer(MediaCodec codec, int index, long presentationTimeUs) { + TraceUtil.beginSection("dropVideoBuffer"); + codec.releaseOutputBuffer(index, false); + TraceUtil.endSection(); + updateDroppedBufferCounters(1); + } + + /** + * Drops frames from the current output buffer to the next keyframe at or before the playback + * position. If no such keyframe exists, as the playback position is inside the same group of + * pictures as the buffer being processed, returns {@code false}. Returns {@code true} otherwise. + * + * @param codec The codec that owns the output buffer. + * @param index The index of the output buffer to drop. + * @param presentationTimeUs The presentation time of the output buffer, in microseconds. + * @param positionUs The current playback position, in microseconds. + * @param treatDroppedBuffersAsSkipped Whether dropped buffers should be treated as intentionally + * skipped. + * @return Whether any buffers were dropped. + * @throws ExoPlaybackException If an error occurs flushing the codec. + */ + protected boolean maybeDropBuffersToKeyframe( + MediaCodec codec, + int index, + long presentationTimeUs, + long positionUs, + boolean treatDroppedBuffersAsSkipped) + throws ExoPlaybackException { + int droppedSourceBufferCount = skipSource(positionUs); + if (droppedSourceBufferCount == 0) { + return false; + } + decoderCounters.droppedToKeyframeCount++; + // We dropped some buffers to catch up, so update the decoder counters and flush the codec, + // which releases all pending buffers buffers including the current output buffer. + int totalDroppedBufferCount = buffersInCodecCount + droppedSourceBufferCount; + if (treatDroppedBuffersAsSkipped) { + decoderCounters.skippedOutputBufferCount += totalDroppedBufferCount; + } else { + updateDroppedBufferCounters(totalDroppedBufferCount); + } + flushOrReinitializeCodec(); + return true; + } + + /** + * Updates decoder counters to reflect that {@code droppedBufferCount} additional buffers were + * dropped. + * + * @param droppedBufferCount The number of additional dropped buffers. + */ + protected void updateDroppedBufferCounters(int droppedBufferCount) { + decoderCounters.droppedBufferCount += droppedBufferCount; + droppedFrames += droppedBufferCount; + consecutiveDroppedFrameCount += droppedBufferCount; + decoderCounters.maxConsecutiveDroppedBufferCount = Math.max(consecutiveDroppedFrameCount, + decoderCounters.maxConsecutiveDroppedBufferCount); + if (maxDroppedFramesToNotify > 0 && droppedFrames >= maxDroppedFramesToNotify) { + maybeNotifyDroppedFrames(); + } + } + + /** + * Renders the output buffer with the specified index. This method is only called if the platform + * API version of the device is less than 21. + * + * @param codec The codec that owns the output buffer. + * @param index The index of the output buffer to drop. + * @param presentationTimeUs The presentation time of the output buffer, in microseconds. + */ + protected void renderOutputBuffer(MediaCodec codec, int index, long presentationTimeUs) { + maybeNotifyVideoSizeChanged(); + TraceUtil.beginSection("releaseOutputBuffer"); + codec.releaseOutputBuffer(index, true); + TraceUtil.endSection(); + lastRenderTimeUs = SystemClock.elapsedRealtime() * 1000; + decoderCounters.renderedOutputBufferCount++; + consecutiveDroppedFrameCount = 0; + maybeNotifyRenderedFirstFrame(); + } + + /** + * Renders the output buffer with the specified index. This method is only called if the platform + * API version of the device is 21 or later. + * + * @param codec The codec that owns the output buffer. + * @param index The index of the output buffer to drop. + * @param presentationTimeUs The presentation time of the output buffer, in microseconds. + * @param releaseTimeNs The wallclock time at which the frame should be displayed, in nanoseconds. + */ + @TargetApi(21) + protected void renderOutputBufferV21( + MediaCodec codec, int index, long presentationTimeUs, long releaseTimeNs) { + maybeNotifyVideoSizeChanged(); + TraceUtil.beginSection("releaseOutputBuffer"); + codec.releaseOutputBuffer(index, releaseTimeNs); + TraceUtil.endSection(); + lastRenderTimeUs = SystemClock.elapsedRealtime() * 1000; + decoderCounters.renderedOutputBufferCount++; + consecutiveDroppedFrameCount = 0; + maybeNotifyRenderedFirstFrame(); + } + + private boolean shouldUseDummySurface(MediaCodecInfo codecInfo) { + return Util.SDK_INT >= 23 + && !tunneling + && !codecNeedsSetOutputSurfaceWorkaround(codecInfo.name) + && (!codecInfo.secure || DummySurface.isSecureSupported(context)); + } + + private void setJoiningDeadlineMs() { + joiningDeadlineMs = allowedJoiningTimeMs > 0 + ? (SystemClock.elapsedRealtime() + allowedJoiningTimeMs) : C.TIME_UNSET; + } + + private void clearRenderedFirstFrame() { + renderedFirstFrame = false; + // The first frame notification is triggered by renderOutputBuffer or renderOutputBufferV21 for + // non-tunneled playback, onQueueInputBuffer for tunneled playback prior to API level 23, and + // OnFrameRenderedListenerV23.onFrameRenderedListener for tunneled playback on API level 23 and + // above. + if (Util.SDK_INT >= 23 && tunneling) { + MediaCodec codec = getCodec(); + // If codec is null then the listener will be instantiated in configureCodec. + if (codec != null) { + tunnelingOnFrameRenderedListener = new OnFrameRenderedListenerV23(codec); + } + } + } + + /* package */ void maybeNotifyRenderedFirstFrame() { + if (!renderedFirstFrame) { + renderedFirstFrame = true; + eventDispatcher.renderedFirstFrame(surface); + } + } + + private void maybeRenotifyRenderedFirstFrame() { + if (renderedFirstFrame) { + eventDispatcher.renderedFirstFrame(surface); + } + } + + private void clearReportedVideoSize() { + reportedWidth = Format.NO_VALUE; + reportedHeight = Format.NO_VALUE; + reportedPixelWidthHeightRatio = Format.NO_VALUE; + reportedUnappliedRotationDegrees = Format.NO_VALUE; + } + + private void maybeNotifyVideoSizeChanged() { + if ((currentWidth != Format.NO_VALUE || currentHeight != Format.NO_VALUE) + && (reportedWidth != currentWidth || reportedHeight != currentHeight + || reportedUnappliedRotationDegrees != currentUnappliedRotationDegrees + || reportedPixelWidthHeightRatio != currentPixelWidthHeightRatio)) { + eventDispatcher.videoSizeChanged(currentWidth, currentHeight, currentUnappliedRotationDegrees, + currentPixelWidthHeightRatio); + reportedWidth = currentWidth; + reportedHeight = currentHeight; + reportedUnappliedRotationDegrees = currentUnappliedRotationDegrees; + reportedPixelWidthHeightRatio = currentPixelWidthHeightRatio; + } + } + + private void maybeRenotifyVideoSizeChanged() { + if (reportedWidth != Format.NO_VALUE || reportedHeight != Format.NO_VALUE) { + eventDispatcher.videoSizeChanged(reportedWidth, reportedHeight, + reportedUnappliedRotationDegrees, reportedPixelWidthHeightRatio); + } + } + + private void maybeNotifyDroppedFrames() { + if (droppedFrames > 0) { + long now = SystemClock.elapsedRealtime(); + long elapsedMs = now - droppedFrameAccumulationStartTimeMs; + eventDispatcher.droppedFrames(droppedFrames, elapsedMs); + droppedFrames = 0; + droppedFrameAccumulationStartTimeMs = now; + } + } + + private static boolean isBufferLate(long earlyUs) { + // Class a buffer as late if it should have been presented more than 30 ms ago. + return earlyUs < -30000; + } + + private static boolean isBufferVeryLate(long earlyUs) { + // Class a buffer as very late if it should have been presented more than 500 ms ago. + return earlyUs < -500000; + } + + @TargetApi(29) + private static void setHdr10PlusInfoV29(MediaCodec codec, byte[] hdr10PlusInfo) { + Bundle codecParameters = new Bundle(); + codecParameters.putByteArray(MediaCodec.PARAMETER_KEY_HDR10_PLUS_INFO, hdr10PlusInfo); + codec.setParameters(codecParameters); + } + + @TargetApi(23) + private static void setOutputSurfaceV23(MediaCodec codec, Surface surface) { + codec.setOutputSurface(surface); + } + + @TargetApi(21) + private static void configureTunnelingV21(MediaFormat mediaFormat, int tunnelingAudioSessionId) { + mediaFormat.setFeatureEnabled(CodecCapabilities.FEATURE_TunneledPlayback, true); + mediaFormat.setInteger(MediaFormat.KEY_AUDIO_SESSION_ID, tunnelingAudioSessionId); + } + + /** + * Returns the framework {@link MediaFormat} that should be used to configure the decoder. + * + * @param format The {@link Format} of media. + * @param codecMimeType The MIME type handled by the codec. + * @param codecMaxValues Codec max values that should be used when configuring the decoder. + * @param codecOperatingRate The codec operating rate, or {@link #CODEC_OPERATING_RATE_UNSET} if + * no codec operating rate should be set. + * @param deviceNeedsNoPostProcessWorkaround Whether the device is known to do post processing by + * default that isn't compatible with ExoPlayer. + * @param tunnelingAudioSessionId The audio session id to use for tunneling, or {@link + * C#AUDIO_SESSION_ID_UNSET} if tunneling should not be enabled. + * @return The framework {@link MediaFormat} that should be used to configure the decoder. + */ + @SuppressLint("InlinedApi") + protected MediaFormat getMediaFormat( + Format format, + String codecMimeType, + CodecMaxValues codecMaxValues, + float codecOperatingRate, + boolean deviceNeedsNoPostProcessWorkaround, + int tunnelingAudioSessionId) { + MediaFormat mediaFormat = new MediaFormat(); + // Set format parameters that should always be set. + mediaFormat.setString(MediaFormat.KEY_MIME, codecMimeType); + mediaFormat.setInteger(MediaFormat.KEY_WIDTH, format.width); + mediaFormat.setInteger(MediaFormat.KEY_HEIGHT, format.height); + MediaFormatUtil.setCsdBuffers(mediaFormat, format.initializationData); + // Set format parameters that may be unset. + MediaFormatUtil.maybeSetFloat(mediaFormat, MediaFormat.KEY_FRAME_RATE, format.frameRate); + MediaFormatUtil.maybeSetInteger(mediaFormat, MediaFormat.KEY_ROTATION, format.rotationDegrees); + MediaFormatUtil.maybeSetColorInfo(mediaFormat, format.colorInfo); + if (MimeTypes.VIDEO_DOLBY_VISION.equals(format.sampleMimeType)) { + // Some phones require the profile to be set on the codec. + // See https://github.com/google/ExoPlayer/pull/5438. + Pair codecProfileAndLevel = MediaCodecUtil.getCodecProfileAndLevel(format); + if (codecProfileAndLevel != null) { + MediaFormatUtil.maybeSetInteger( + mediaFormat, MediaFormat.KEY_PROFILE, codecProfileAndLevel.first); + } + } + // Set codec max values. + mediaFormat.setInteger(MediaFormat.KEY_MAX_WIDTH, codecMaxValues.width); + mediaFormat.setInteger(MediaFormat.KEY_MAX_HEIGHT, codecMaxValues.height); + MediaFormatUtil.maybeSetInteger( + mediaFormat, MediaFormat.KEY_MAX_INPUT_SIZE, codecMaxValues.inputSize); + // Set codec configuration values. + if (Util.SDK_INT >= 23) { + mediaFormat.setInteger(MediaFormat.KEY_PRIORITY, 0 /* realtime priority */); + if (codecOperatingRate != CODEC_OPERATING_RATE_UNSET) { + mediaFormat.setFloat(MediaFormat.KEY_OPERATING_RATE, codecOperatingRate); + } + } + if (deviceNeedsNoPostProcessWorkaround) { + mediaFormat.setInteger("no-post-process", 1); + mediaFormat.setInteger("auto-frc", 0); + } + if (tunnelingAudioSessionId != C.AUDIO_SESSION_ID_UNSET) { + configureTunnelingV21(mediaFormat, tunnelingAudioSessionId); + } + return mediaFormat; + } + + /** + * Returns {@link CodecMaxValues} suitable for configuring a codec for {@code format} in a way + * that will allow possible adaptation to other compatible formats in {@code streamFormats}. + * + * @param codecInfo Information about the {@link MediaCodec} being configured. + * @param format The {@link Format} for which the codec is being configured. + * @param streamFormats The possible stream formats. + * @return Suitable {@link CodecMaxValues}. + */ + protected CodecMaxValues getCodecMaxValues( + MediaCodecInfo codecInfo, Format format, Format[] streamFormats) { + int maxWidth = format.width; + int maxHeight = format.height; + int maxInputSize = getMaxInputSize(codecInfo, format); + if (streamFormats.length == 1) { + // The single entry in streamFormats must correspond to the format for which the codec is + // being configured. + if (maxInputSize != Format.NO_VALUE) { + int codecMaxInputSize = + getCodecMaxInputSize(codecInfo, format.sampleMimeType, format.width, format.height); + if (codecMaxInputSize != Format.NO_VALUE) { + // Scale up the initial video decoder maximum input size so playlist item transitions with + // small increases in maximum sample size don't require reinitialization. This only makes + // a difference if the exact maximum sample sizes are known from the container. + int scaledMaxInputSize = + (int) (maxInputSize * INITIAL_FORMAT_MAX_INPUT_SIZE_SCALE_FACTOR); + // Avoid exceeding the maximum expected for the codec. + maxInputSize = Math.min(scaledMaxInputSize, codecMaxInputSize); + } + } + return new CodecMaxValues(maxWidth, maxHeight, maxInputSize); + } + boolean haveUnknownDimensions = false; + for (Format streamFormat : streamFormats) { + if (codecInfo.isSeamlessAdaptationSupported( + format, streamFormat, /* isNewFormatComplete= */ false)) { + haveUnknownDimensions |= + (streamFormat.width == Format.NO_VALUE || streamFormat.height == Format.NO_VALUE); + maxWidth = Math.max(maxWidth, streamFormat.width); + maxHeight = Math.max(maxHeight, streamFormat.height); + maxInputSize = Math.max(maxInputSize, getMaxInputSize(codecInfo, streamFormat)); + } + } + if (haveUnknownDimensions) { + Log.w(TAG, "Resolutions unknown. Codec max resolution: " + maxWidth + "x" + maxHeight); + Point codecMaxSize = getCodecMaxSize(codecInfo, format); + if (codecMaxSize != null) { + maxWidth = Math.max(maxWidth, codecMaxSize.x); + maxHeight = Math.max(maxHeight, codecMaxSize.y); + maxInputSize = + Math.max( + maxInputSize, + getCodecMaxInputSize(codecInfo, format.sampleMimeType, maxWidth, maxHeight)); + Log.w(TAG, "Codec max resolution adjusted to: " + maxWidth + "x" + maxHeight); + } + } + return new CodecMaxValues(maxWidth, maxHeight, maxInputSize); + } + + @Override + protected DecoderException createDecoderException( + Throwable cause, @Nullable MediaCodecInfo codecInfo) { + return new VideoDecoderException(cause, codecInfo, surface); + } + + /** + * Returns a maximum video size to use when configuring a codec for {@code format} in a way that + * will allow possible adaptation to other compatible formats that are expected to have the same + * aspect ratio, but whose sizes are unknown. + * + * @param codecInfo Information about the {@link MediaCodec} being configured. + * @param format The {@link Format} for which the codec is being configured. + * @return The maximum video size to use, or null if the size of {@code format} should be used. + */ + private static Point getCodecMaxSize(MediaCodecInfo codecInfo, Format format) { + boolean isVerticalVideo = format.height > format.width; + int formatLongEdgePx = isVerticalVideo ? format.height : format.width; + int formatShortEdgePx = isVerticalVideo ? format.width : format.height; + float aspectRatio = (float) formatShortEdgePx / formatLongEdgePx; + for (int longEdgePx : STANDARD_LONG_EDGE_VIDEO_PX) { + int shortEdgePx = (int) (longEdgePx * aspectRatio); + if (longEdgePx <= formatLongEdgePx || shortEdgePx <= formatShortEdgePx) { + // Don't return a size not larger than the format for which the codec is being configured. + return null; + } else if (Util.SDK_INT >= 21) { + Point alignedSize = codecInfo.alignVideoSizeV21(isVerticalVideo ? shortEdgePx : longEdgePx, + isVerticalVideo ? longEdgePx : shortEdgePx); + float frameRate = format.frameRate; + if (codecInfo.isVideoSizeAndRateSupportedV21(alignedSize.x, alignedSize.y, frameRate)) { + return alignedSize; + } + } else { + try { + // Conservatively assume the codec requires 16px width and height alignment. + longEdgePx = Util.ceilDivide(longEdgePx, 16) * 16; + shortEdgePx = Util.ceilDivide(shortEdgePx, 16) * 16; + if (longEdgePx * shortEdgePx <= MediaCodecUtil.maxH264DecodableFrameSize()) { + return new Point( + isVerticalVideo ? shortEdgePx : longEdgePx, + isVerticalVideo ? longEdgePx : shortEdgePx); + } + } catch (DecoderQueryException e) { + // We tried our best. Give up! + return null; + } + } + } + return null; + } + + /** + * Returns a maximum input buffer size for a given {@link MediaCodec} and {@link Format}. + * + * @param codecInfo Information about the {@link MediaCodec} being configured. + * @param format The format. + * @return A maximum input buffer size in bytes, or {@link Format#NO_VALUE} if a maximum could not + * be determined. + */ + private static int getMaxInputSize(MediaCodecInfo codecInfo, Format format) { + if (format.maxInputSize != Format.NO_VALUE) { + // The format defines an explicit maximum input size. Add the total size of initialization + // data buffers, as they may need to be queued in the same input buffer as the largest sample. + int totalInitializationDataSize = 0; + int initializationDataCount = format.initializationData.size(); + for (int i = 0; i < initializationDataCount; i++) { + totalInitializationDataSize += format.initializationData.get(i).length; + } + return format.maxInputSize + totalInitializationDataSize; + } else { + // Calculated maximum input sizes are overestimates, so it's not necessary to add the size of + // initialization data. + return getCodecMaxInputSize(codecInfo, format.sampleMimeType, format.width, format.height); + } + } + + /** + * Returns a maximum input size for a given codec, MIME type, width and height. + * + * @param codecInfo Information about the {@link MediaCodec} being configured. + * @param sampleMimeType The format mime type. + * @param width The width in pixels. + * @param height The height in pixels. + * @return A maximum input size in bytes, or {@link Format#NO_VALUE} if a maximum could not be + * determined. + */ + private static int getCodecMaxInputSize( + MediaCodecInfo codecInfo, String sampleMimeType, int width, int height) { + if (width == Format.NO_VALUE || height == Format.NO_VALUE) { + // We can't infer a maximum input size without video dimensions. + return Format.NO_VALUE; + } + + // Attempt to infer a maximum input size from the format. + int maxPixels; + int minCompressionRatio; + switch (sampleMimeType) { + case MimeTypes.VIDEO_H263: + case MimeTypes.VIDEO_MP4V: + maxPixels = width * height; + minCompressionRatio = 2; + break; + case MimeTypes.VIDEO_H264: + if ("BRAVIA 4K 2015".equals(Util.MODEL) // Sony Bravia 4K + || ("Amazon".equals(Util.MANUFACTURER) + && ("KFSOWI".equals(Util.MODEL) // Kindle Soho + || ("AFTS".equals(Util.MODEL) && codecInfo.secure)))) { // Fire TV Gen 2 + // Use the default value for cases where platform limitations may prevent buffers of the + // calculated maximum input size from being allocated. + return Format.NO_VALUE; + } + // Round up width/height to an integer number of macroblocks. + maxPixels = Util.ceilDivide(width, 16) * Util.ceilDivide(height, 16) * 16 * 16; + minCompressionRatio = 2; + break; + case MimeTypes.VIDEO_VP8: + // VPX does not specify a ratio so use the values from the platform's SoftVPX.cpp. + maxPixels = width * height; + minCompressionRatio = 2; + break; + case MimeTypes.VIDEO_H265: + case MimeTypes.VIDEO_VP9: + maxPixels = width * height; + minCompressionRatio = 4; + break; + default: + // Leave the default max input size. + return Format.NO_VALUE; + } + // Estimate the maximum input size assuming three channel 4:2:0 subsampled input frames. + return (maxPixels * 3) / (2 * minCompressionRatio); + } + + /** + * Returns whether the device is known to do post processing by default that isn't compatible with + * ExoPlayer. + * + * @return Whether the device is known to do post processing by default that isn't compatible with + * ExoPlayer. + */ + private static boolean deviceNeedsNoPostProcessWorkaround() { + // Nvidia devices prior to M try to adjust the playback rate to better map the frame-rate of + // content to the refresh rate of the display. For example playback of 23.976fps content is + // adjusted to play at 1.001x speed when the output display is 60Hz. Unfortunately the + // implementation causes ExoPlayer's reported playback position to drift out of sync. Captions + // also lose sync [Internal: b/26453592]. Even after M, the devices may apply post processing + // operations that can modify frame output timestamps, which is incompatible with ExoPlayer's + // logic for skipping decode-only frames. + return "NVIDIA".equals(Util.MANUFACTURER); + } + + /* + * TODO: + * + * 1. Validate that Android device certification now ensures correct behavior, and add a + * corresponding SDK_INT upper bound for applying the workaround (probably SDK_INT < 26). + * 2. Determine a complete list of affected devices. + * 3. Some of the devices in this list only fail to support setOutputSurface when switching from + * a SurfaceView provided Surface to a Surface of another type (e.g. TextureView/DummySurface), + * and vice versa. One hypothesis is that setOutputSurface fails when the surfaces have + * different pixel formats. If we can find a way to query the Surface instances to determine + * whether this case applies, then we'll be able to provide a more targeted workaround. + */ + /** + * Returns whether the codec is known to implement {@link MediaCodec#setOutputSurface(Surface)} + * incorrectly. + * + *

If true is returned then we fall back to releasing and re-instantiating the codec instead. + * + * @param name The name of the codec. + * @return True if the device is known to implement {@link MediaCodec#setOutputSurface(Surface)} + * incorrectly. + */ + protected boolean codecNeedsSetOutputSurfaceWorkaround(String name) { + if (name.startsWith("OMX.google")) { + // Google OMX decoders are not known to have this issue on any API level. + return false; + } + synchronized (MediaCodecVideoRenderer.class) { + if (!evaluatedDeviceNeedsSetOutputSurfaceWorkaround) { + if ("dangal".equals(Util.DEVICE)) { + // Workaround for MiTV devices: + // https://github.com/google/ExoPlayer/issues/5169, + // https://github.com/google/ExoPlayer/issues/6899. + deviceNeedsSetOutputSurfaceWorkaround = true; + } else if (Util.SDK_INT <= 27 && "HWEML".equals(Util.DEVICE)) { + // Workaround for Huawei P20: + // https://github.com/google/ExoPlayer/issues/4468#issuecomment-459291645. + deviceNeedsSetOutputSurfaceWorkaround = true; + } else if (Util.SDK_INT >= 27) { + // In general, devices running API level 27 or later should be unaffected. Do nothing. + } else { + // Enable the workaround on a per-device basis. Works around: + // https://github.com/google/ExoPlayer/issues/3236, + // https://github.com/google/ExoPlayer/issues/3355, + // https://github.com/google/ExoPlayer/issues/3439, + // https://github.com/google/ExoPlayer/issues/3724, + // https://github.com/google/ExoPlayer/issues/3835, + // https://github.com/google/ExoPlayer/issues/4006, + // https://github.com/google/ExoPlayer/issues/4084, + // https://github.com/google/ExoPlayer/issues/4104, + // https://github.com/google/ExoPlayer/issues/4134, + // https://github.com/google/ExoPlayer/issues/4315, + // https://github.com/google/ExoPlayer/issues/4419, + // https://github.com/google/ExoPlayer/issues/4460, + // https://github.com/google/ExoPlayer/issues/4468, + // https://github.com/google/ExoPlayer/issues/5312, + // https://github.com/google/ExoPlayer/issues/6503. + switch (Util.DEVICE) { + case "1601": + case "1713": + case "1714": + case "A10-70F": + case "A10-70L": + case "A1601": + case "A2016a40": + case "A7000-a": + case "A7000plus": + case "A7010a48": + case "A7020a48": + case "AquaPowerM": + case "ASUS_X00AD_2": + case "Aura_Note_2": + case "BLACK-1X": + case "BRAVIA_ATV2": + case "BRAVIA_ATV3_4K": + case "C1": + case "ComioS1": + case "CP8676_I02": + case "CPH1609": + case "CPY83_I00": + case "cv1": + case "cv3": + case "deb": + case "E5643": + case "ELUGA_A3_Pro": + case "ELUGA_Note": + case "ELUGA_Prim": + case "ELUGA_Ray_X": + case "EverStar_S": + case "F3111": + case "F3113": + case "F3116": + case "F3211": + case "F3213": + case "F3215": + case "F3311": + case "flo": + case "fugu": + case "GiONEE_CBL7513": + case "GiONEE_GBL7319": + case "GIONEE_GBL7360": + case "GIONEE_SWW1609": + case "GIONEE_SWW1627": + case "GIONEE_SWW1631": + case "GIONEE_WBL5708": + case "GIONEE_WBL7365": + case "GIONEE_WBL7519": + case "griffin": + case "htc_e56ml_dtul": + case "hwALE-H": + case "HWBLN-H": + case "HWCAM-H": + case "HWVNS-H": + case "HWWAS-H": + case "i9031": + case "iball8735_9806": + case "Infinix-X572": + case "iris60": + case "itel_S41": + case "j2xlteins": + case "JGZ": + case "K50a40": + case "kate": + case "l5460": + case "le_x6": + case "LS-5017": + case "M5c": + case "manning": + case "marino_f": + case "MEIZU_M5": + case "mh": + case "mido": + case "MX6": + case "namath": + case "nicklaus_f": + case "NX541J": + case "NX573J": + case "OnePlus5T": + case "p212": + case "P681": + case "P85": + case "panell_d": + case "panell_dl": + case "panell_ds": + case "panell_dt": + case "PB2-670M": + case "PGN528": + case "PGN610": + case "PGN611": + case "Phantom6": + case "Pixi4-7_3G": + case "Pixi5-10_4G": + case "PLE": + case "PRO7S": + case "Q350": + case "Q4260": + case "Q427": + case "Q4310": + case "Q5": + case "QM16XE_U": + case "QX1": + case "santoni": + case "Slate_Pro": + case "SVP-DTV15": + case "s905x018": + case "taido_row": + case "TB3-730F": + case "TB3-730X": + case "TB3-850F": + case "TB3-850M": + case "tcl_eu": + case "V1": + case "V23GB": + case "V5": + case "vernee_M5": + case "watson": + case "whyred": + case "woods_f": + case "woods_fn": + case "X3_HK": + case "XE2X": + case "XT1663": + case "Z12_PRO": + case "Z80": + deviceNeedsSetOutputSurfaceWorkaround = true; + break; + default: + // Do nothing. + break; + } + switch (Util.MODEL) { + case "AFTA": + case "AFTN": + case "JSN-L21": + deviceNeedsSetOutputSurfaceWorkaround = true; + break; + default: + // Do nothing. + break; + } + } + evaluatedDeviceNeedsSetOutputSurfaceWorkaround = true; + } + } + return deviceNeedsSetOutputSurfaceWorkaround; + } + + protected Surface getSurface() { + return surface; + } + + protected static final class CodecMaxValues { + + public final int width; + public final int height; + public final int inputSize; + + public CodecMaxValues(int width, int height, int inputSize) { + this.width = width; + this.height = height; + this.inputSize = inputSize; + } + + } + + @TargetApi(23) + private final class OnFrameRenderedListenerV23 + implements MediaCodec.OnFrameRenderedListener, Handler.Callback { + + private static final int HANDLE_FRAME_RENDERED = 0; + + private final Handler handler; + + public OnFrameRenderedListenerV23(MediaCodec codec) { + handler = new Handler(this); + codec.setOnFrameRenderedListener(/* listener= */ this, handler); + } + + @Override + public void onFrameRendered(MediaCodec codec, long presentationTimeUs, long nanoTime) { + // Workaround bug in MediaCodec that causes deadlock if you call directly back into the + // MediaCodec from this listener method. + // Deadlock occurs because MediaCodec calls this listener method holding a lock, + // which may also be required by calls made back into the MediaCodec. + // This was fixed in https://android-review.googlesource.com/1156807. + // + // The workaround queues the event for subsequent processing, where the lock will not be held. + if (Util.SDK_INT < 30) { + Message message = + Message.obtain( + handler, + /* what= */ HANDLE_FRAME_RENDERED, + /* arg1= */ (int) (presentationTimeUs >> 32), + /* arg2= */ (int) presentationTimeUs); + handler.sendMessageAtFrontOfQueue(message); + } else { + handleFrameRendered(presentationTimeUs); + } + } + + @Override + public boolean handleMessage(Message message) { + switch (message.what) { + case HANDLE_FRAME_RENDERED: + handleFrameRendered(Util.toLong(message.arg1, message.arg2)); + return true; + default: + return false; + } + } + + private void handleFrameRendered(long presentationTimeUs) { + if (this != tunnelingOnFrameRenderedListener) { + // Stale event. + return; + } + if (presentationTimeUs == TUNNELING_EOS_PRESENTATION_TIME_US) { + onProcessedTunneledEndOfStream(); + } else { + onProcessedTunneledBuffer(presentationTimeUs); + } + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/SimpleDecoderVideoRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/SimpleDecoderVideoRenderer.java new file mode 100644 index 0000000000..fbcd4d959c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/SimpleDecoderVideoRenderer.java @@ -0,0 +1,975 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import android.os.Handler; +import android.os.SystemClock; +import android.view.Surface; +import androidx.annotation.CallSuper; +import androidx.annotation.IntDef; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.BaseRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderCounters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.SimpleDecoder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSession.DrmSessionException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.DrmSessionManager; +import org.mozilla.thirdparty.com.google.android.exoplayer2.drm.ExoMediaCrypto; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimedValueQueue; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TraceUtil; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.VideoRendererEventListener.EventDispatcher; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** Decodes and renders video using a {@link SimpleDecoder}. */ +public abstract class SimpleDecoderVideoRenderer extends BaseRenderer { + + /** Decoder reinitialization states. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({ + REINITIALIZATION_STATE_NONE, + REINITIALIZATION_STATE_SIGNAL_END_OF_STREAM, + REINITIALIZATION_STATE_WAIT_END_OF_STREAM + }) + private @interface ReinitializationState {} + /** The decoder does not need to be re-initialized. */ + private static final int REINITIALIZATION_STATE_NONE = 0; + /** + * The input format has changed in a way that requires the decoder to be re-initialized, but we + * haven't yet signaled an end of stream to the existing decoder. We need to do so in order to + * ensure that it outputs any remaining buffers before we release it. + */ + private static final int REINITIALIZATION_STATE_SIGNAL_END_OF_STREAM = 1; + /** + * The input format has changed in a way that requires the decoder to be re-initialized, and we've + * signaled an end of stream to the existing decoder. We're waiting for the decoder to output an + * end of stream signal to indicate that it has output any remaining buffers before we release it. + */ + private static final int REINITIALIZATION_STATE_WAIT_END_OF_STREAM = 2; + + private final long allowedJoiningTimeMs; + private final int maxDroppedFramesToNotify; + private final boolean playClearSamplesWithoutKeys; + private final EventDispatcher eventDispatcher; + private final TimedValueQueue formatQueue; + private final DecoderInputBuffer flagsOnlyBuffer; + private final DrmSessionManager drmSessionManager; + + private boolean drmResourcesAcquired; + private Format inputFormat; + private Format outputFormat; + private SimpleDecoder< + VideoDecoderInputBuffer, + ? extends VideoDecoderOutputBuffer, + ? extends VideoDecoderException> + decoder; + private VideoDecoderInputBuffer inputBuffer; + private VideoDecoderOutputBuffer outputBuffer; + @Nullable private Surface surface; + @Nullable private VideoDecoderOutputBufferRenderer outputBufferRenderer; + @C.VideoOutputMode private int outputMode; + + @Nullable private DrmSession decoderDrmSession; + @Nullable private DrmSession sourceDrmSession; + + @ReinitializationState private int decoderReinitializationState; + private boolean decoderReceivedBuffers; + + private boolean renderedFirstFrame; + private long initialPositionUs; + private long joiningDeadlineMs; + private boolean waitingForKeys; + private boolean waitingForFirstSampleInFormat; + + private boolean inputStreamEnded; + private boolean outputStreamEnded; + private int reportedWidth; + private int reportedHeight; + + private long droppedFrameAccumulationStartTimeMs; + private int droppedFrames; + private int consecutiveDroppedFrameCount; + private int buffersInCodecCount; + private long lastRenderTimeUs; + private long outputStreamOffsetUs; + + /** Decoder event counters used for debugging purposes. */ + protected DecoderCounters decoderCounters; + + /** + * @param allowedJoiningTimeMs The maximum duration in milliseconds for which this video renderer + * can attempt to seamlessly join an ongoing playback. + * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be + * null if delivery of events is not required. + * @param eventListener A listener of events. May be null if delivery of events is not required. + * @param maxDroppedFramesToNotify The maximum number of frames that can be dropped between + * invocations of {@link VideoRendererEventListener#onDroppedFrames(int, long)}. + * @param drmSessionManager For use with encrypted media. May be null if support for encrypted + * media is not required. + * @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions. + * For example a media file may start with a short clear region so as to allow playback to + * begin in parallel with key acquisition. This parameter specifies whether the renderer is + * permitted to play clear regions of encrypted media files before {@code drmSessionManager} + * has obtained the keys necessary to decrypt encrypted regions of the media. + */ + protected SimpleDecoderVideoRenderer( + long allowedJoiningTimeMs, + @Nullable Handler eventHandler, + @Nullable VideoRendererEventListener eventListener, + int maxDroppedFramesToNotify, + @Nullable DrmSessionManager drmSessionManager, + boolean playClearSamplesWithoutKeys) { + super(C.TRACK_TYPE_VIDEO); + this.allowedJoiningTimeMs = allowedJoiningTimeMs; + this.maxDroppedFramesToNotify = maxDroppedFramesToNotify; + this.drmSessionManager = drmSessionManager; + this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys; + joiningDeadlineMs = C.TIME_UNSET; + clearReportedVideoSize(); + formatQueue = new TimedValueQueue<>(); + flagsOnlyBuffer = DecoderInputBuffer.newFlagsOnlyInstance(); + eventDispatcher = new EventDispatcher(eventHandler, eventListener); + decoderReinitializationState = REINITIALIZATION_STATE_NONE; + outputMode = C.VIDEO_OUTPUT_MODE_NONE; + } + + // BaseRenderer implementation. + + @Override + @Capabilities + public final int supportsFormat(Format format) { + return supportsFormatInternal(drmSessionManager, format); + } + + @Override + public void render(long positionUs, long elapsedRealtimeUs) throws ExoPlaybackException { + if (outputStreamEnded) { + return; + } + + if (inputFormat == null) { + // We don't have a format yet, so try and read one. + FormatHolder formatHolder = getFormatHolder(); + flagsOnlyBuffer.clear(); + int result = readSource(formatHolder, flagsOnlyBuffer, true); + if (result == C.RESULT_FORMAT_READ) { + onInputFormatChanged(formatHolder); + } else if (result == C.RESULT_BUFFER_READ) { + // End of stream read having not read a format. + Assertions.checkState(flagsOnlyBuffer.isEndOfStream()); + inputStreamEnded = true; + outputStreamEnded = true; + return; + } else { + // We still don't have a format and can't make progress without one. + return; + } + } + + // If we don't have a decoder yet, we need to instantiate one. + maybeInitDecoder(); + + if (decoder != null) { + try { + // Rendering loop. + TraceUtil.beginSection("drainAndFeed"); + while (drainOutputBuffer(positionUs, elapsedRealtimeUs)) {} + while (feedInputBuffer()) {} + TraceUtil.endSection(); + } catch (VideoDecoderException e) { + throw createRendererException(e, inputFormat); + } + decoderCounters.ensureUpdated(); + } + } + + @Override + public boolean isEnded() { + return outputStreamEnded; + } + + @Override + public boolean isReady() { + if (waitingForKeys) { + return false; + } + if (inputFormat != null + && (isSourceReady() || outputBuffer != null) + && (renderedFirstFrame || !hasOutput())) { + // Ready. If we were joining then we've now joined, so clear the joining deadline. + joiningDeadlineMs = C.TIME_UNSET; + return true; + } else if (joiningDeadlineMs == C.TIME_UNSET) { + // Not joining. + return false; + } else if (SystemClock.elapsedRealtime() < joiningDeadlineMs) { + // Joining and still within the joining deadline. + return true; + } else { + // The joining deadline has been exceeded. Give up and clear the deadline. + joiningDeadlineMs = C.TIME_UNSET; + return false; + } + } + + // Protected methods. + + @Override + protected void onEnabled(boolean joining) throws ExoPlaybackException { + if (drmSessionManager != null && !drmResourcesAcquired) { + drmResourcesAcquired = true; + drmSessionManager.prepare(); + } + decoderCounters = new DecoderCounters(); + eventDispatcher.enabled(decoderCounters); + } + + @Override + protected void onPositionReset(long positionUs, boolean joining) throws ExoPlaybackException { + inputStreamEnded = false; + outputStreamEnded = false; + clearRenderedFirstFrame(); + initialPositionUs = C.TIME_UNSET; + consecutiveDroppedFrameCount = 0; + if (decoder != null) { + flushDecoder(); + } + if (joining) { + setJoiningDeadlineMs(); + } else { + joiningDeadlineMs = C.TIME_UNSET; + } + formatQueue.clear(); + } + + @Override + protected void onStarted() { + droppedFrames = 0; + droppedFrameAccumulationStartTimeMs = SystemClock.elapsedRealtime(); + lastRenderTimeUs = SystemClock.elapsedRealtime() * 1000; + } + + @Override + protected void onStopped() { + joiningDeadlineMs = C.TIME_UNSET; + maybeNotifyDroppedFrames(); + } + + @Override + protected void onDisabled() { + inputFormat = null; + waitingForKeys = false; + clearReportedVideoSize(); + clearRenderedFirstFrame(); + try { + setSourceDrmSession(null); + releaseDecoder(); + } finally { + eventDispatcher.disabled(decoderCounters); + } + } + + @Override + protected void onReset() { + if (drmSessionManager != null && drmResourcesAcquired) { + drmResourcesAcquired = false; + drmSessionManager.release(); + } + } + + @Override + protected void onStreamChanged(Format[] formats, long offsetUs) throws ExoPlaybackException { + outputStreamOffsetUs = offsetUs; + super.onStreamChanged(formats, offsetUs); + } + + /** + * Called when a decoder has been created and configured. + * + *

The default implementation is a no-op. + * + * @param name The name of the decoder that was initialized. + * @param initializedTimestampMs {@link SystemClock#elapsedRealtime()} when initialization + * finished. + * @param initializationDurationMs The time taken to initialize the decoder, in milliseconds. + */ + @CallSuper + protected void onDecoderInitialized( + String name, long initializedTimestampMs, long initializationDurationMs) { + eventDispatcher.decoderInitialized(name, initializedTimestampMs, initializationDurationMs); + } + + /** + * Flushes the decoder. + * + * @throws ExoPlaybackException If an error occurs reinitializing a decoder. + */ + @CallSuper + protected void flushDecoder() throws ExoPlaybackException { + waitingForKeys = false; + buffersInCodecCount = 0; + if (decoderReinitializationState != REINITIALIZATION_STATE_NONE) { + releaseDecoder(); + maybeInitDecoder(); + } else { + inputBuffer = null; + if (outputBuffer != null) { + outputBuffer.release(); + outputBuffer = null; + } + decoder.flush(); + decoderReceivedBuffers = false; + } + } + + /** Releases the decoder. */ + @CallSuper + protected void releaseDecoder() { + inputBuffer = null; + outputBuffer = null; + decoderReinitializationState = REINITIALIZATION_STATE_NONE; + decoderReceivedBuffers = false; + buffersInCodecCount = 0; + if (decoder != null) { + decoder.release(); + decoder = null; + decoderCounters.decoderReleaseCount++; + } + setDecoderDrmSession(null); + } + + /** + * Called when a new format is read from the upstream source. + * + * @param formatHolder A {@link FormatHolder} that holds the new {@link Format}. + * @throws ExoPlaybackException If an error occurs (re-)initializing the decoder. + */ + @CallSuper + @SuppressWarnings("unchecked") + protected void onInputFormatChanged(FormatHolder formatHolder) throws ExoPlaybackException { + waitingForFirstSampleInFormat = true; + Format newFormat = Assertions.checkNotNull(formatHolder.format); + if (formatHolder.includesDrmSession) { + setSourceDrmSession((DrmSession) formatHolder.drmSession); + } else { + sourceDrmSession = + getUpdatedSourceDrmSession(inputFormat, newFormat, drmSessionManager, sourceDrmSession); + } + inputFormat = newFormat; + + if (sourceDrmSession != decoderDrmSession) { + if (decoderReceivedBuffers) { + // Signal end of stream and wait for any final output buffers before re-initialization. + decoderReinitializationState = REINITIALIZATION_STATE_SIGNAL_END_OF_STREAM; + } else { + // There aren't any final output buffers, so release the decoder immediately. + releaseDecoder(); + maybeInitDecoder(); + } + } + + eventDispatcher.inputFormatChanged(inputFormat); + } + + /** + * Called immediately before an input buffer is queued into the decoder. + * + *

The default implementation is a no-op. + * + * @param buffer The buffer that will be queued. + */ + protected void onQueueInputBuffer(VideoDecoderInputBuffer buffer) { + // Do nothing. + } + + /** + * Called when an output buffer is successfully processed. + * + * @param presentationTimeUs The timestamp associated with the output buffer. + */ + @CallSuper + protected void onProcessedOutputBuffer(long presentationTimeUs) { + buffersInCodecCount--; + } + + /** + * Returns whether the buffer being processed should be dropped. + * + * @param earlyUs The time until the buffer should be presented in microseconds. A negative value + * indicates that the buffer is late. + * @param elapsedRealtimeUs {@link android.os.SystemClock#elapsedRealtime()} in microseconds, + * measured at the start of the current iteration of the rendering loop. + */ + protected boolean shouldDropOutputBuffer(long earlyUs, long elapsedRealtimeUs) { + return isBufferLate(earlyUs); + } + + /** + * Returns whether to drop all buffers from the buffer being processed to the keyframe at or after + * the current playback position, if possible. + * + * @param earlyUs The time until the current buffer should be presented in microseconds. A + * negative value indicates that the buffer is late. + * @param elapsedRealtimeUs {@link android.os.SystemClock#elapsedRealtime()} in microseconds, + * measured at the start of the current iteration of the rendering loop. + */ + protected boolean shouldDropBuffersToKeyframe(long earlyUs, long elapsedRealtimeUs) { + return isBufferVeryLate(earlyUs); + } + + /** + * Returns whether to force rendering an output buffer. + * + * @param earlyUs The time until the current buffer should be presented in microseconds. A + * negative value indicates that the buffer is late. + * @param elapsedSinceLastRenderUs The elapsed time since the last output buffer was rendered, in + * microseconds. + * @return Returns whether to force rendering an output buffer. + */ + protected boolean shouldForceRenderOutputBuffer(long earlyUs, long elapsedSinceLastRenderUs) { + return isBufferLate(earlyUs) && elapsedSinceLastRenderUs > 100000; + } + + /** + * Skips the specified output buffer and releases it. + * + * @param outputBuffer The output buffer to skip. + */ + protected void skipOutputBuffer(VideoDecoderOutputBuffer outputBuffer) { + decoderCounters.skippedOutputBufferCount++; + outputBuffer.release(); + } + + /** + * Drops the specified output buffer and releases it. + * + * @param outputBuffer The output buffer to drop. + */ + protected void dropOutputBuffer(VideoDecoderOutputBuffer outputBuffer) { + updateDroppedBufferCounters(1); + outputBuffer.release(); + } + + /** + * Drops frames from the current output buffer to the next keyframe at or before the playback + * position. If no such keyframe exists, as the playback position is inside the same group of + * pictures as the buffer being processed, returns {@code false}. Returns {@code true} otherwise. + * + * @param positionUs The current playback position, in microseconds. + * @return Whether any buffers were dropped. + * @throws ExoPlaybackException If an error occurs flushing the decoder. + */ + protected boolean maybeDropBuffersToKeyframe(long positionUs) throws ExoPlaybackException { + int droppedSourceBufferCount = skipSource(positionUs); + if (droppedSourceBufferCount == 0) { + return false; + } + decoderCounters.droppedToKeyframeCount++; + // We dropped some buffers to catch up, so update the decoder counters and flush the decoder, + // which releases all pending buffers buffers including the current output buffer. + updateDroppedBufferCounters(buffersInCodecCount + droppedSourceBufferCount); + flushDecoder(); + return true; + } + + /** + * Updates decoder counters to reflect that {@code droppedBufferCount} additional buffers were + * dropped. + * + * @param droppedBufferCount The number of additional dropped buffers. + */ + protected void updateDroppedBufferCounters(int droppedBufferCount) { + decoderCounters.droppedBufferCount += droppedBufferCount; + droppedFrames += droppedBufferCount; + consecutiveDroppedFrameCount += droppedBufferCount; + decoderCounters.maxConsecutiveDroppedBufferCount = + Math.max(consecutiveDroppedFrameCount, decoderCounters.maxConsecutiveDroppedBufferCount); + if (maxDroppedFramesToNotify > 0 && droppedFrames >= maxDroppedFramesToNotify) { + maybeNotifyDroppedFrames(); + } + } + + /** + * Returns the {@link Capabilities} for the given {@link Format}. + * + * @param drmSessionManager The renderer's {@link DrmSessionManager}. + * @param format The format, which has a video {@link Format#sampleMimeType}. + * @return The {@link Capabilities} for this {@link Format}. + * @see RendererCapabilities#supportsFormat(Format) + */ + @Capabilities + protected abstract int supportsFormatInternal( + @Nullable DrmSessionManager drmSessionManager, Format format); + + /** + * Creates a decoder for the given format. + * + * @param format The format for which a decoder is required. + * @param mediaCrypto The {@link ExoMediaCrypto} object required for decoding encrypted content. + * May be null and can be ignored if decoder does not handle encrypted content. + * @return The decoder. + * @throws VideoDecoderException If an error occurred creating a suitable decoder. + */ + protected abstract SimpleDecoder< + VideoDecoderInputBuffer, + ? extends VideoDecoderOutputBuffer, + ? extends VideoDecoderException> + createDecoder(Format format, @Nullable ExoMediaCrypto mediaCrypto) + throws VideoDecoderException; + + /** + * Renders the specified output buffer. + * + *

The implementation of this method takes ownership of the output buffer and is responsible + * for calling {@link VideoDecoderOutputBuffer#release()} either immediately or in the future. + * + * @param outputBuffer {@link VideoDecoderOutputBuffer} to render. + * @param presentationTimeUs Presentation time in microseconds. + * @param outputFormat Output {@link Format}. + * @throws VideoDecoderException If an error occurs when rendering the output buffer. + */ + protected void renderOutputBuffer( + VideoDecoderOutputBuffer outputBuffer, long presentationTimeUs, Format outputFormat) + throws VideoDecoderException { + lastRenderTimeUs = C.msToUs(SystemClock.elapsedRealtime() * 1000); + int bufferMode = outputBuffer.mode; + boolean renderSurface = bufferMode == C.VIDEO_OUTPUT_MODE_SURFACE_YUV && surface != null; + boolean renderYuv = bufferMode == C.VIDEO_OUTPUT_MODE_YUV && outputBufferRenderer != null; + if (!renderYuv && !renderSurface) { + dropOutputBuffer(outputBuffer); + } else { + maybeNotifyVideoSizeChanged(outputBuffer.width, outputBuffer.height); + if (renderYuv) { + outputBufferRenderer.setOutputBuffer(outputBuffer); + } else { + renderOutputBufferToSurface(outputBuffer, surface); + } + consecutiveDroppedFrameCount = 0; + decoderCounters.renderedOutputBufferCount++; + maybeNotifyRenderedFirstFrame(); + } + } + + /** + * Renders the specified output buffer to the passed surface. + * + *

The implementation of this method takes ownership of the output buffer and is responsible + * for calling {@link VideoDecoderOutputBuffer#release()} either immediately or in the future. + * + * @param outputBuffer {@link VideoDecoderOutputBuffer} to render. + * @param surface Output {@link Surface}. + * @throws VideoDecoderException If an error occurs when rendering the output buffer. + */ + protected abstract void renderOutputBufferToSurface( + VideoDecoderOutputBuffer outputBuffer, Surface surface) throws VideoDecoderException; + + /** + * Sets output surface. + * + * @param surface Surface. + */ + protected final void setOutputSurface(@Nullable Surface surface) { + if (this.surface != surface) { + // The output has changed. + this.surface = surface; + if (surface != null) { + outputBufferRenderer = null; + outputMode = C.VIDEO_OUTPUT_MODE_SURFACE_YUV; + if (decoder != null) { + setDecoderOutputMode(outputMode); + } + onOutputChanged(); + } else { + // The output has been removed. We leave the outputMode of the underlying decoder unchanged + // in anticipation that a subsequent output will likely be of the same type. + outputMode = C.VIDEO_OUTPUT_MODE_NONE; + onOutputRemoved(); + } + } else if (surface != null) { + // The output is unchanged and non-null. + onOutputReset(); + } + } + + /** + * Sets output buffer renderer. + * + * @param outputBufferRenderer Output buffer renderer. + */ + protected final void setOutputBufferRenderer( + @Nullable VideoDecoderOutputBufferRenderer outputBufferRenderer) { + if (this.outputBufferRenderer != outputBufferRenderer) { + // The output has changed. + this.outputBufferRenderer = outputBufferRenderer; + if (outputBufferRenderer != null) { + surface = null; + outputMode = C.VIDEO_OUTPUT_MODE_YUV; + if (decoder != null) { + setDecoderOutputMode(outputMode); + } + onOutputChanged(); + } else { + // The output has been removed. We leave the outputMode of the underlying decoder unchanged + // in anticipation that a subsequent output will likely be of the same type. + outputMode = C.VIDEO_OUTPUT_MODE_NONE; + onOutputRemoved(); + } + } else if (outputBufferRenderer != null) { + // The output is unchanged and non-null. + onOutputReset(); + } + } + + /** + * Sets output mode of the decoder. + * + * @param outputMode Output mode. + */ + protected abstract void setDecoderOutputMode(@C.VideoOutputMode int outputMode); + + // Internal methods. + + private void setSourceDrmSession(@Nullable DrmSession session) { + DrmSession.replaceSession(sourceDrmSession, session); + sourceDrmSession = session; + } + + private void setDecoderDrmSession(@Nullable DrmSession session) { + DrmSession.replaceSession(decoderDrmSession, session); + decoderDrmSession = session; + } + + private void maybeInitDecoder() throws ExoPlaybackException { + if (decoder != null) { + return; + } + + setDecoderDrmSession(sourceDrmSession); + + ExoMediaCrypto mediaCrypto = null; + if (decoderDrmSession != null) { + mediaCrypto = decoderDrmSession.getMediaCrypto(); + if (mediaCrypto == null) { + DrmSessionException drmError = decoderDrmSession.getError(); + if (drmError != null) { + // Continue for now. We may be able to avoid failure if the session recovers, or if a new + // input format causes the session to be replaced before it's used. + } else { + // The drm session isn't open yet. + return; + } + } + } + + try { + long decoderInitializingTimestamp = SystemClock.elapsedRealtime(); + decoder = createDecoder(inputFormat, mediaCrypto); + setDecoderOutputMode(outputMode); + long decoderInitializedTimestamp = SystemClock.elapsedRealtime(); + onDecoderInitialized( + decoder.getName(), + decoderInitializedTimestamp, + decoderInitializedTimestamp - decoderInitializingTimestamp); + decoderCounters.decoderInitCount++; + } catch (VideoDecoderException e) { + throw createRendererException(e, inputFormat); + } + } + + private boolean feedInputBuffer() throws VideoDecoderException, ExoPlaybackException { + if (decoder == null + || decoderReinitializationState == REINITIALIZATION_STATE_WAIT_END_OF_STREAM + || inputStreamEnded) { + // We need to reinitialize the decoder or the input stream has ended. + return false; + } + + if (inputBuffer == null) { + inputBuffer = decoder.dequeueInputBuffer(); + if (inputBuffer == null) { + return false; + } + } + + if (decoderReinitializationState == REINITIALIZATION_STATE_SIGNAL_END_OF_STREAM) { + inputBuffer.setFlags(C.BUFFER_FLAG_END_OF_STREAM); + decoder.queueInputBuffer(inputBuffer); + inputBuffer = null; + decoderReinitializationState = REINITIALIZATION_STATE_WAIT_END_OF_STREAM; + return false; + } + + int result; + FormatHolder formatHolder = getFormatHolder(); + if (waitingForKeys) { + // We've already read an encrypted sample into buffer, and are waiting for keys. + result = C.RESULT_BUFFER_READ; + } else { + result = readSource(formatHolder, inputBuffer, false); + } + + if (result == C.RESULT_NOTHING_READ) { + return false; + } + if (result == C.RESULT_FORMAT_READ) { + onInputFormatChanged(formatHolder); + return true; + } + if (inputBuffer.isEndOfStream()) { + inputStreamEnded = true; + decoder.queueInputBuffer(inputBuffer); + inputBuffer = null; + return false; + } + boolean bufferEncrypted = inputBuffer.isEncrypted(); + waitingForKeys = shouldWaitForKeys(bufferEncrypted); + if (waitingForKeys) { + return false; + } + if (waitingForFirstSampleInFormat) { + formatQueue.add(inputBuffer.timeUs, inputFormat); + waitingForFirstSampleInFormat = false; + } + inputBuffer.flip(); + inputBuffer.colorInfo = inputFormat.colorInfo; + onQueueInputBuffer(inputBuffer); + decoder.queueInputBuffer(inputBuffer); + buffersInCodecCount++; + decoderReceivedBuffers = true; + decoderCounters.inputBufferCount++; + inputBuffer = null; + return true; + } + + /** + * Attempts to dequeue an output buffer from the decoder and, if successful, passes it to {@link + * #processOutputBuffer(long, long)}. + * + * @param positionUs The player's current position. + * @param elapsedRealtimeUs {@link android.os.SystemClock#elapsedRealtime()} in microseconds, + * measured at the start of the current iteration of the rendering loop. + * @return Whether it may be possible to drain more output data. + * @throws ExoPlaybackException If an error occurs draining the output buffer. + */ + private boolean drainOutputBuffer(long positionUs, long elapsedRealtimeUs) + throws ExoPlaybackException, VideoDecoderException { + if (outputBuffer == null) { + outputBuffer = decoder.dequeueOutputBuffer(); + if (outputBuffer == null) { + return false; + } + decoderCounters.skippedOutputBufferCount += outputBuffer.skippedOutputBufferCount; + buffersInCodecCount -= outputBuffer.skippedOutputBufferCount; + } + + if (outputBuffer.isEndOfStream()) { + if (decoderReinitializationState == REINITIALIZATION_STATE_WAIT_END_OF_STREAM) { + // We're waiting to re-initialize the decoder, and have now processed all final buffers. + releaseDecoder(); + maybeInitDecoder(); + } else { + outputBuffer.release(); + outputBuffer = null; + outputStreamEnded = true; + } + return false; + } + + boolean processedOutputBuffer = processOutputBuffer(positionUs, elapsedRealtimeUs); + if (processedOutputBuffer) { + onProcessedOutputBuffer(outputBuffer.timeUs); + outputBuffer = null; + } + return processedOutputBuffer; + } + + /** + * Processes {@link #outputBuffer} by rendering it, skipping it or doing nothing, and returns + * whether it may be possible to process another output buffer. + * + * @param positionUs The player's current position. + * @param elapsedRealtimeUs {@link android.os.SystemClock#elapsedRealtime()} in microseconds, + * measured at the start of the current iteration of the rendering loop. + * @return Whether it may be possible to drain another output buffer. + * @throws ExoPlaybackException If an error occurs processing the output buffer. + */ + private boolean processOutputBuffer(long positionUs, long elapsedRealtimeUs) + throws ExoPlaybackException, VideoDecoderException { + if (initialPositionUs == C.TIME_UNSET) { + initialPositionUs = positionUs; + } + + long earlyUs = outputBuffer.timeUs - positionUs; + if (!hasOutput()) { + // Skip frames in sync with playback, so we'll be at the right frame if the mode changes. + if (isBufferLate(earlyUs)) { + skipOutputBuffer(outputBuffer); + return true; + } + return false; + } + + long presentationTimeUs = outputBuffer.timeUs - outputStreamOffsetUs; + Format format = formatQueue.pollFloor(presentationTimeUs); + if (format != null) { + outputFormat = format; + } + + long elapsedRealtimeNowUs = SystemClock.elapsedRealtime() * 1000; + boolean isStarted = getState() == STATE_STARTED; + if (!renderedFirstFrame + || (isStarted + && shouldForceRenderOutputBuffer(earlyUs, elapsedRealtimeNowUs - lastRenderTimeUs))) { + renderOutputBuffer(outputBuffer, presentationTimeUs, outputFormat); + return true; + } + + if (!isStarted || positionUs == initialPositionUs) { + return false; + } + + if (shouldDropBuffersToKeyframe(earlyUs, elapsedRealtimeUs) + && maybeDropBuffersToKeyframe(positionUs)) { + return false; + } else if (shouldDropOutputBuffer(earlyUs, elapsedRealtimeUs)) { + dropOutputBuffer(outputBuffer); + return true; + } + + if (earlyUs < 30000) { + renderOutputBuffer(outputBuffer, presentationTimeUs, outputFormat); + return true; + } + + return false; + } + + private boolean hasOutput() { + return outputMode != C.VIDEO_OUTPUT_MODE_NONE; + } + + private void onOutputChanged() { + // If we know the video size, report it again immediately. + maybeRenotifyVideoSizeChanged(); + // We haven't rendered to the new output yet. + clearRenderedFirstFrame(); + if (getState() == STATE_STARTED) { + setJoiningDeadlineMs(); + } + } + + private void onOutputRemoved() { + clearReportedVideoSize(); + clearRenderedFirstFrame(); + } + + private void onOutputReset() { + // The output is unchanged and non-null. If we know the video size and/or have already + // rendered to the output, report these again immediately. + maybeRenotifyVideoSizeChanged(); + maybeRenotifyRenderedFirstFrame(); + } + + private boolean shouldWaitForKeys(boolean bufferEncrypted) throws ExoPlaybackException { + if (decoderDrmSession == null + || (!bufferEncrypted + && (playClearSamplesWithoutKeys || decoderDrmSession.playClearSamplesWithoutKeys()))) { + return false; + } + @DrmSession.State int drmSessionState = decoderDrmSession.getState(); + if (drmSessionState == DrmSession.STATE_ERROR) { + throw createRendererException(decoderDrmSession.getError(), inputFormat); + } + return drmSessionState != DrmSession.STATE_OPENED_WITH_KEYS; + } + + private void setJoiningDeadlineMs() { + joiningDeadlineMs = + allowedJoiningTimeMs > 0 + ? (SystemClock.elapsedRealtime() + allowedJoiningTimeMs) + : C.TIME_UNSET; + } + + private void clearRenderedFirstFrame() { + renderedFirstFrame = false; + } + + private void maybeNotifyRenderedFirstFrame() { + if (!renderedFirstFrame) { + renderedFirstFrame = true; + eventDispatcher.renderedFirstFrame(surface); + } + } + + private void maybeRenotifyRenderedFirstFrame() { + if (renderedFirstFrame) { + eventDispatcher.renderedFirstFrame(surface); + } + } + + private void clearReportedVideoSize() { + reportedWidth = Format.NO_VALUE; + reportedHeight = Format.NO_VALUE; + } + + private void maybeNotifyVideoSizeChanged(int width, int height) { + if (reportedWidth != width || reportedHeight != height) { + reportedWidth = width; + reportedHeight = height; + eventDispatcher.videoSizeChanged( + width, height, /* unappliedRotationDegrees= */ 0, /* pixelWidthHeightRatio= */ 1); + } + } + + private void maybeRenotifyVideoSizeChanged() { + if (reportedWidth != Format.NO_VALUE || reportedHeight != Format.NO_VALUE) { + eventDispatcher.videoSizeChanged( + reportedWidth, + reportedHeight, + /* unappliedRotationDegrees= */ 0, + /* pixelWidthHeightRatio= */ 1); + } + } + + private void maybeNotifyDroppedFrames() { + if (droppedFrames > 0) { + long now = SystemClock.elapsedRealtime(); + long elapsedMs = now - droppedFrameAccumulationStartTimeMs; + eventDispatcher.droppedFrames(droppedFrames, elapsedMs); + droppedFrames = 0; + droppedFrameAccumulationStartTimeMs = now; + } + } + + private static boolean isBufferLate(long earlyUs) { + // Class a buffer as late if it should have been presented more than 30 ms ago. + return earlyUs < -30000; + } + + private static boolean isBufferVeryLate(long earlyUs) { + // Class a buffer as very late if it should have been presented more than 500 ms ago. + return earlyUs < -500000; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderException.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderException.java new file mode 100644 index 0000000000..dfffbe049b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderException.java @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +/** Thrown when a video decoder error occurs. */ +public class VideoDecoderException extends Exception { + + /** + * Creates an instance with the given message. + * + * @param message The detail message for this exception. + */ + public VideoDecoderException(String message) { + super(message); + } + + /** + * Creates an instance with the given message and cause. + * + * @param message The detail message for this exception. + * @param cause the cause (which is saved for later retrieval by the {@link #getCause()} method). + * A null value is permitted, and indicates that the cause is nonexistent or unknown. + */ + public VideoDecoderException(String message, Throwable cause) { + super(message, cause); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderGLSurfaceView.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderGLSurfaceView.java new file mode 100644 index 0000000000..69249dd426 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderGLSurfaceView.java @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import android.content.Context; +import android.opengl.GLSurfaceView; +import android.util.AttributeSet; +import androidx.annotation.Nullable; + +/** + * GLSurfaceView for rendering video output. To render video in this view, call {@link + * #getVideoDecoderOutputBufferRenderer()} to get a {@link VideoDecoderOutputBufferRenderer} that + * will render video decoder output buffers in this view. + * + *

This view is intended for use only with extension renderers. For other use cases a {@link + * android.view.SurfaceView} or {@link android.view.TextureView} should be used instead. + */ +public class VideoDecoderGLSurfaceView extends GLSurfaceView { + + private final VideoDecoderRenderer renderer; + + /** @param context A {@link Context}. */ + public VideoDecoderGLSurfaceView(Context context) { + this(context, /* attrs= */ null); + } + + /** + * @param context A {@link Context}. + * @param attrs Custom attributes. + */ + public VideoDecoderGLSurfaceView(Context context, @Nullable AttributeSet attrs) { + super(context, attrs); + renderer = new VideoDecoderRenderer(this); + setPreserveEGLContextOnPause(true); + setEGLContextClientVersion(2); + setRenderer(renderer); + setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY); + } + + /** Returns the {@link VideoDecoderOutputBufferRenderer} that will render frames in this view. */ + public VideoDecoderOutputBufferRenderer getVideoDecoderOutputBufferRenderer() { + return renderer; + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderInputBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderInputBuffer.java new file mode 100644 index 0000000000..d911ac3a5a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderInputBuffer.java @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; + +/** Input buffer to a video decoder. */ +public class VideoDecoderInputBuffer extends DecoderInputBuffer { + + @Nullable public ColorInfo colorInfo; + + public VideoDecoderInputBuffer() { + super(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_DIRECT); + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBuffer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBuffer.java new file mode 100644 index 0000000000..b09e8b759a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBuffer.java @@ -0,0 +1,185 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.OutputBuffer; +import java.nio.ByteBuffer; + +/** Video decoder output buffer containing video frame data. */ +public class VideoDecoderOutputBuffer extends OutputBuffer { + + /** Buffer owner. */ + public interface Owner { + + /** + * Releases the buffer. + * + * @param outputBuffer Output buffer. + */ + void releaseOutputBuffer(VideoDecoderOutputBuffer outputBuffer); + } + + // LINT.IfChange + public static final int COLORSPACE_UNKNOWN = 0; + public static final int COLORSPACE_BT601 = 1; + public static final int COLORSPACE_BT709 = 2; + public static final int COLORSPACE_BT2020 = 3; + // LINT.ThenChange( + // ../../../../../../../../../../extensions/av1/src/main/jni/gav1_jni.cc, + // ../../../../../../../../../../extensions/vp9/src/main/jni/vpx_jni.cc + // ) + + /** Decoder private data. */ + public int decoderPrivate; + + /** Output mode. */ + @C.VideoOutputMode public int mode; + /** RGB buffer for RGB mode. */ + @Nullable public ByteBuffer data; + + public int width; + public int height; + @Nullable public ColorInfo colorInfo; + + /** YUV planes for YUV mode. */ + @Nullable public ByteBuffer[] yuvPlanes; + + @Nullable public int[] yuvStrides; + public int colorspace; + + /** + * Supplemental data related to the output frame, if {@link #hasSupplementalData()} returns true. + * If present, the buffer is populated with supplemental data from position 0 to its limit. + */ + @Nullable public ByteBuffer supplementalData; + + private final Owner owner; + + /** + * Creates VideoDecoderOutputBuffer. + * + * @param owner Buffer owner. + */ + public VideoDecoderOutputBuffer(Owner owner) { + this.owner = owner; + } + + @Override + public void release() { + owner.releaseOutputBuffer(this); + } + + /** + * Initializes the buffer. + * + * @param timeUs The presentation timestamp for the buffer, in microseconds. + * @param mode The output mode. One of {@link C#VIDEO_OUTPUT_MODE_NONE}, {@link + * C#VIDEO_OUTPUT_MODE_YUV} and {@link C#VIDEO_OUTPUT_MODE_SURFACE_YUV}. + * @param supplementalData Supplemental data associated with the frame, or {@code null} if not + * present. It is safe to reuse the provided buffer after this method returns. + */ + public void init( + long timeUs, @C.VideoOutputMode int mode, @Nullable ByteBuffer supplementalData) { + this.timeUs = timeUs; + this.mode = mode; + if (supplementalData != null && supplementalData.hasRemaining()) { + addFlag(C.BUFFER_FLAG_HAS_SUPPLEMENTAL_DATA); + int size = supplementalData.limit(); + if (this.supplementalData == null || this.supplementalData.capacity() < size) { + this.supplementalData = ByteBuffer.allocate(size); + } else { + this.supplementalData.clear(); + } + this.supplementalData.put(supplementalData); + this.supplementalData.flip(); + supplementalData.position(0); + } else { + this.supplementalData = null; + } + } + + /** + * Resizes the buffer based on the given stride. Called via JNI after decoding completes. + * + * @return Whether the buffer was resized successfully. + */ + public boolean initForYuvFrame(int width, int height, int yStride, int uvStride, int colorspace) { + this.width = width; + this.height = height; + this.colorspace = colorspace; + int uvHeight = (int) (((long) height + 1) / 2); + if (!isSafeToMultiply(yStride, height) || !isSafeToMultiply(uvStride, uvHeight)) { + return false; + } + int yLength = yStride * height; + int uvLength = uvStride * uvHeight; + int minimumYuvSize = yLength + (uvLength * 2); + if (!isSafeToMultiply(uvLength, 2) || minimumYuvSize < yLength) { + return false; + } + + // Initialize data. + if (data == null || data.capacity() < minimumYuvSize) { + data = ByteBuffer.allocateDirect(minimumYuvSize); + } else { + data.position(0); + data.limit(minimumYuvSize); + } + + if (yuvPlanes == null) { + yuvPlanes = new ByteBuffer[3]; + } + + ByteBuffer data = this.data; + ByteBuffer[] yuvPlanes = this.yuvPlanes; + + // Rewrapping has to be done on every frame since the stride might have changed. + yuvPlanes[0] = data.slice(); + yuvPlanes[0].limit(yLength); + data.position(yLength); + yuvPlanes[1] = data.slice(); + yuvPlanes[1].limit(uvLength); + data.position(yLength + uvLength); + yuvPlanes[2] = data.slice(); + yuvPlanes[2].limit(uvLength); + if (yuvStrides == null) { + yuvStrides = new int[3]; + } + yuvStrides[0] = yStride; + yuvStrides[1] = uvStride; + yuvStrides[2] = uvStride; + return true; + } + + /** + * Configures the buffer for the given frame dimensions when passing actual frame data via {@link + * #decoderPrivate}. Called via JNI after decoding completes. + */ + public void initForPrivateFrame(int width, int height) { + this.width = width; + this.height = height; + } + + /** + * Ensures that the result of multiplying individual numbers can fit into the size limit of an + * integer. + */ + private static boolean isSafeToMultiply(int a, int b) { + return a >= 0 && b >= 0 && !(b > 0 && a >= Integer.MAX_VALUE / b); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBufferRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBufferRenderer.java new file mode 100644 index 0000000000..f4058ea40f --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderOutputBufferRenderer.java @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +/** Renders the {@link VideoDecoderOutputBuffer}. */ +public interface VideoDecoderOutputBufferRenderer { + + /** + * Sets the output buffer to be rendered. The renderer is responsible for releasing the buffer. + * + * @param outputBuffer The output buffer to be rendered. + */ + void setOutputBuffer(VideoDecoderOutputBuffer outputBuffer); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderRenderer.java new file mode 100644 index 0000000000..1e302e4aaa --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoDecoderRenderer.java @@ -0,0 +1,241 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import android.opengl.GLES20; +import android.opengl.GLSurfaceView; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.GlUtil; +import java.nio.FloatBuffer; +import java.util.concurrent.atomic.AtomicReference; +import javax.microedition.khronos.egl.EGLConfig; +import javax.microedition.khronos.opengles.GL10; + +/** + * GLSurfaceView.Renderer implementation that can render YUV Frames returned by a video decoder + * after decoding. It does the YUV to RGB color conversion in the Fragment Shader. + */ +/* package */ class VideoDecoderRenderer + implements GLSurfaceView.Renderer, VideoDecoderOutputBufferRenderer { + + private static final float[] kColorConversion601 = { + 1.164f, 1.164f, 1.164f, + 0.0f, -0.392f, 2.017f, + 1.596f, -0.813f, 0.0f, + }; + + private static final float[] kColorConversion709 = { + 1.164f, 1.164f, 1.164f, + 0.0f, -0.213f, 2.112f, + 1.793f, -0.533f, 0.0f, + }; + + private static final float[] kColorConversion2020 = { + 1.168f, 1.168f, 1.168f, + 0.0f, -0.188f, 2.148f, + 1.683f, -0.652f, 0.0f, + }; + + private static final String VERTEX_SHADER = + "varying vec2 interp_tc_y;\n" + + "varying vec2 interp_tc_u;\n" + + "varying vec2 interp_tc_v;\n" + + "attribute vec4 in_pos;\n" + + "attribute vec2 in_tc_y;\n" + + "attribute vec2 in_tc_u;\n" + + "attribute vec2 in_tc_v;\n" + + "void main() {\n" + + " gl_Position = in_pos;\n" + + " interp_tc_y = in_tc_y;\n" + + " interp_tc_u = in_tc_u;\n" + + " interp_tc_v = in_tc_v;\n" + + "}\n"; + private static final String[] TEXTURE_UNIFORMS = {"y_tex", "u_tex", "v_tex"}; + private static final String FRAGMENT_SHADER = + "precision mediump float;\n" + + "varying vec2 interp_tc_y;\n" + + "varying vec2 interp_tc_u;\n" + + "varying vec2 interp_tc_v;\n" + + "uniform sampler2D y_tex;\n" + + "uniform sampler2D u_tex;\n" + + "uniform sampler2D v_tex;\n" + + "uniform mat3 mColorConversion;\n" + + "void main() {\n" + + " vec3 yuv;\n" + + " yuv.x = texture2D(y_tex, interp_tc_y).r - 0.0625;\n" + + " yuv.y = texture2D(u_tex, interp_tc_u).r - 0.5;\n" + + " yuv.z = texture2D(v_tex, interp_tc_v).r - 0.5;\n" + + " gl_FragColor = vec4(mColorConversion * yuv, 1.0);\n" + + "}\n"; + + private static final FloatBuffer TEXTURE_VERTICES = + GlUtil.createBuffer(new float[] {-1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 1.0f, -1.0f}); + private final GLSurfaceView surfaceView; + private final int[] yuvTextures = new int[3]; + private final AtomicReference pendingOutputBufferReference; + + // Kept in field rather than a local variable in order not to get garbage collected before + // glDrawArrays uses it. + private FloatBuffer[] textureCoords; + + private int program; + private int[] texLocations; + private int colorMatrixLocation; + private int[] previousWidths; + private int[] previousStrides; + + @Nullable + private VideoDecoderOutputBuffer renderedOutputBuffer; // Accessed only from the GL thread. + + public VideoDecoderRenderer(GLSurfaceView surfaceView) { + this.surfaceView = surfaceView; + pendingOutputBufferReference = new AtomicReference<>(); + textureCoords = new FloatBuffer[3]; + texLocations = new int[3]; + previousWidths = new int[3]; + previousStrides = new int[3]; + for (int i = 0; i < 3; i++) { + previousWidths[i] = previousStrides[i] = -1; + } + } + + @Override + public void onSurfaceCreated(GL10 unused, EGLConfig config) { + program = GlUtil.compileProgram(VERTEX_SHADER, FRAGMENT_SHADER); + GLES20.glUseProgram(program); + int posLocation = GLES20.glGetAttribLocation(program, "in_pos"); + GLES20.glEnableVertexAttribArray(posLocation); + GLES20.glVertexAttribPointer(posLocation, 2, GLES20.GL_FLOAT, false, 0, TEXTURE_VERTICES); + texLocations[0] = GLES20.glGetAttribLocation(program, "in_tc_y"); + GLES20.glEnableVertexAttribArray(texLocations[0]); + texLocations[1] = GLES20.glGetAttribLocation(program, "in_tc_u"); + GLES20.glEnableVertexAttribArray(texLocations[1]); + texLocations[2] = GLES20.glGetAttribLocation(program, "in_tc_v"); + GLES20.glEnableVertexAttribArray(texLocations[2]); + GlUtil.checkGlError(); + colorMatrixLocation = GLES20.glGetUniformLocation(program, "mColorConversion"); + GlUtil.checkGlError(); + setupTextures(); + GlUtil.checkGlError(); + } + + @Override + public void onSurfaceChanged(GL10 unused, int width, int height) { + GLES20.glViewport(0, 0, width, height); + } + + @Override + public void onDrawFrame(GL10 unused) { + VideoDecoderOutputBuffer pendingOutputBuffer = pendingOutputBufferReference.getAndSet(null); + if (pendingOutputBuffer == null && renderedOutputBuffer == null) { + // There is no output buffer to render at the moment. + return; + } + if (pendingOutputBuffer != null) { + if (renderedOutputBuffer != null) { + renderedOutputBuffer.release(); + } + renderedOutputBuffer = pendingOutputBuffer; + } + VideoDecoderOutputBuffer outputBuffer = renderedOutputBuffer; + // Set color matrix. Assume BT709 if the color space is unknown. + float[] colorConversion = kColorConversion709; + switch (outputBuffer.colorspace) { + case VideoDecoderOutputBuffer.COLORSPACE_BT601: + colorConversion = kColorConversion601; + break; + case VideoDecoderOutputBuffer.COLORSPACE_BT2020: + colorConversion = kColorConversion2020; + break; + case VideoDecoderOutputBuffer.COLORSPACE_BT709: + default: + break; // Do nothing + } + GLES20.glUniformMatrix3fv(colorMatrixLocation, 1, false, colorConversion, 0); + + for (int i = 0; i < 3; i++) { + int h = (i == 0) ? outputBuffer.height : (outputBuffer.height + 1) / 2; + GLES20.glActiveTexture(GLES20.GL_TEXTURE0 + i); + GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, yuvTextures[i]); + GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1); + GLES20.glTexImage2D( + GLES20.GL_TEXTURE_2D, + 0, + GLES20.GL_LUMINANCE, + outputBuffer.yuvStrides[i], + h, + 0, + GLES20.GL_LUMINANCE, + GLES20.GL_UNSIGNED_BYTE, + outputBuffer.yuvPlanes[i]); + } + + int[] widths = new int[3]; + widths[0] = outputBuffer.width; + // TODO: Handle streams where chroma channels are not stored at half width and height + // compared to luma channel. See [Internal: b/142097774]. + // U and V planes are being stored at half width compared to Y. + widths[1] = widths[2] = (widths[0] + 1) / 2; + for (int i = 0; i < 3; i++) { + // Set cropping of stride if either width or stride has changed. + if (previousWidths[i] != widths[i] || previousStrides[i] != outputBuffer.yuvStrides[i]) { + Assertions.checkState(outputBuffer.yuvStrides[i] != 0); + float widthRatio = (float) widths[i] / outputBuffer.yuvStrides[i]; + // These buffers are consumed during each call to glDrawArrays. They need to be member + // variables rather than local variables in order not to get garbage collected. + textureCoords[i] = + GlUtil.createBuffer( + new float[] {0.0f, 0.0f, 0.0f, 1.0f, widthRatio, 0.0f, widthRatio, 1.0f}); + GLES20.glVertexAttribPointer( + texLocations[i], 2, GLES20.GL_FLOAT, false, 0, textureCoords[i]); + previousWidths[i] = widths[i]; + previousStrides[i] = outputBuffer.yuvStrides[i]; + } + } + + GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT); + GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4); + GlUtil.checkGlError(); + } + + @Override + public void setOutputBuffer(VideoDecoderOutputBuffer outputBuffer) { + VideoDecoderOutputBuffer oldPendingOutputBuffer = + pendingOutputBufferReference.getAndSet(outputBuffer); + if (oldPendingOutputBuffer != null) { + // The old pending output buffer will never be used for rendering, so release it now. + oldPendingOutputBuffer.release(); + } + surfaceView.requestRender(); + } + + private void setupTextures() { + GLES20.glGenTextures(3, yuvTextures, 0); + for (int i = 0; i < 3; i++) { + GLES20.glUniform1i(GLES20.glGetUniformLocation(program, TEXTURE_UNIFORMS[i]), i); + GLES20.glActiveTexture(GLES20.GL_TEXTURE0 + i); + GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, yuvTextures[i]); + GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR); + GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR); + GLES20.glTexParameterf( + GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE); + GLES20.glTexParameterf( + GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE); + } + GlUtil.checkGlError(); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoFrameMetadataListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoFrameMetadataListener.java new file mode 100644 index 0000000000..46e05def5c --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoFrameMetadataListener.java @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import android.media.MediaFormat; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; + +/** A listener for metadata corresponding to video frame being rendered. */ +public interface VideoFrameMetadataListener { + /** + * Called when the video frame about to be rendered. This method is called on the playback thread. + * + * @param presentationTimeUs The presentation time of the output buffer, in microseconds. + * @param releaseTimeNs The wallclock time at which the frame should be displayed, in nanoseconds. + * If the platform API version of the device is less than 21, then this is the best effort. + * @param format The format associated with the frame. + * @param mediaFormat The framework media format associated with the frame, or {@code null} if not + * known or not applicable (e.g., because the frame was not output by a {@link + * android.media.MediaCodec MediaCodec}). + */ + void onVideoFrameAboutToBeRendered( + long presentationTimeUs, + long releaseTimeNs, + Format format, + @Nullable MediaFormat mediaFormat); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoFrameReleaseTimeHelper.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoFrameReleaseTimeHelper.java new file mode 100644 index 0000000000..c13cd4b1cb --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoFrameReleaseTimeHelper.java @@ -0,0 +1,361 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import android.annotation.TargetApi; +import android.content.Context; +import android.hardware.display.DisplayManager; +import android.os.Handler; +import android.os.HandlerThread; +import android.os.Message; +import android.view.Choreographer; +import android.view.Choreographer.FrameCallback; +import android.view.Display; +import android.view.WindowManager; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; + +/** + * Makes a best effort to adjust frame release timestamps for a smoother visual result. + */ +public final class VideoFrameReleaseTimeHelper { + + private static final long CHOREOGRAPHER_SAMPLE_DELAY_MILLIS = 500; + private static final long MAX_ALLOWED_DRIFT_NS = 20000000; + + private static final long VSYNC_OFFSET_PERCENTAGE = 80; + private static final int MIN_FRAMES_FOR_ADJUSTMENT = 6; + + private final WindowManager windowManager; + private final VSyncSampler vsyncSampler; + private final DefaultDisplayListener displayListener; + + private long vsyncDurationNs; + private long vsyncOffsetNs; + + private long lastFramePresentationTimeUs; + private long adjustedLastFrameTimeNs; + private long pendingAdjustedFrameTimeNs; + + private boolean haveSync; + private long syncUnadjustedReleaseTimeNs; + private long syncFramePresentationTimeNs; + private long frameCount; + + /** + * Constructs an instance that smooths frame release timestamps but does not align them with + * the default display's vsync signal. + */ + public VideoFrameReleaseTimeHelper() { + this(null); + } + + /** + * Constructs an instance that smooths frame release timestamps and aligns them with the default + * display's vsync signal. + * + * @param context A context from which information about the default display can be retrieved. + */ + public VideoFrameReleaseTimeHelper(@Nullable Context context) { + if (context != null) { + context = context.getApplicationContext(); + windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); + } else { + windowManager = null; + } + if (windowManager != null) { + displayListener = Util.SDK_INT >= 17 ? maybeBuildDefaultDisplayListenerV17(context) : null; + vsyncSampler = VSyncSampler.getInstance(); + } else { + displayListener = null; + vsyncSampler = null; + } + vsyncDurationNs = C.TIME_UNSET; + vsyncOffsetNs = C.TIME_UNSET; + } + + /** + * Enables the helper. Must be called from the playback thread. + */ + public void enable() { + haveSync = false; + if (windowManager != null) { + vsyncSampler.addObserver(); + if (displayListener != null) { + displayListener.register(); + } + updateDefaultDisplayRefreshRateParams(); + } + } + + /** + * Disables the helper. Must be called from the playback thread. + */ + public void disable() { + if (windowManager != null) { + if (displayListener != null) { + displayListener.unregister(); + } + vsyncSampler.removeObserver(); + } + } + + /** + * Adjusts a frame release timestamp. Must be called from the playback thread. + * + * @param framePresentationTimeUs The frame's presentation time, in microseconds. + * @param unadjustedReleaseTimeNs The frame's unadjusted release time, in nanoseconds and in + * the same time base as {@link System#nanoTime()}. + * @return The adjusted frame release timestamp, in nanoseconds and in the same time base as + * {@link System#nanoTime()}. + */ + public long adjustReleaseTime(long framePresentationTimeUs, long unadjustedReleaseTimeNs) { + long framePresentationTimeNs = framePresentationTimeUs * 1000; + + // Until we know better, the adjustment will be a no-op. + long adjustedFrameTimeNs = framePresentationTimeNs; + long adjustedReleaseTimeNs = unadjustedReleaseTimeNs; + + if (haveSync) { + // See if we've advanced to the next frame. + if (framePresentationTimeUs != lastFramePresentationTimeUs) { + frameCount++; + adjustedLastFrameTimeNs = pendingAdjustedFrameTimeNs; + } + if (frameCount >= MIN_FRAMES_FOR_ADJUSTMENT) { + // We're synced and have waited the required number of frames to apply an adjustment. + // Calculate the average frame time across all the frames we've seen since the last sync. + // This will typically give us a frame rate at a finer granularity than the frame times + // themselves (which often only have millisecond granularity). + long averageFrameDurationNs = (framePresentationTimeNs - syncFramePresentationTimeNs) + / frameCount; + // Project the adjusted frame time forward using the average. + long candidateAdjustedFrameTimeNs = adjustedLastFrameTimeNs + averageFrameDurationNs; + + if (isDriftTooLarge(candidateAdjustedFrameTimeNs, unadjustedReleaseTimeNs)) { + haveSync = false; + } else { + adjustedFrameTimeNs = candidateAdjustedFrameTimeNs; + adjustedReleaseTimeNs = syncUnadjustedReleaseTimeNs + adjustedFrameTimeNs + - syncFramePresentationTimeNs; + } + } else { + // We're synced but haven't waited the required number of frames to apply an adjustment. + // Check drift anyway. + if (isDriftTooLarge(framePresentationTimeNs, unadjustedReleaseTimeNs)) { + haveSync = false; + } + } + } + + // If we need to sync, do so now. + if (!haveSync) { + syncFramePresentationTimeNs = framePresentationTimeNs; + syncUnadjustedReleaseTimeNs = unadjustedReleaseTimeNs; + frameCount = 0; + haveSync = true; + } + + lastFramePresentationTimeUs = framePresentationTimeUs; + pendingAdjustedFrameTimeNs = adjustedFrameTimeNs; + + if (vsyncSampler == null || vsyncDurationNs == C.TIME_UNSET) { + return adjustedReleaseTimeNs; + } + long sampledVsyncTimeNs = vsyncSampler.sampledVsyncTimeNs; + if (sampledVsyncTimeNs == C.TIME_UNSET) { + return adjustedReleaseTimeNs; + } + + // Find the timestamp of the closest vsync. This is the vsync that we're targeting. + long snappedTimeNs = closestVsync(adjustedReleaseTimeNs, sampledVsyncTimeNs, vsyncDurationNs); + // Apply an offset so that we release before the target vsync, but after the previous one. + return snappedTimeNs - vsyncOffsetNs; + } + + @TargetApi(17) + private DefaultDisplayListener maybeBuildDefaultDisplayListenerV17(Context context) { + DisplayManager manager = (DisplayManager) context.getSystemService(Context.DISPLAY_SERVICE); + return manager == null ? null : new DefaultDisplayListener(manager); + } + + private void updateDefaultDisplayRefreshRateParams() { + // Note: If we fail to update the parameters, we leave them set to their previous values. + Display defaultDisplay = windowManager.getDefaultDisplay(); + if (defaultDisplay != null) { + double defaultDisplayRefreshRate = defaultDisplay.getRefreshRate(); + vsyncDurationNs = (long) (C.NANOS_PER_SECOND / defaultDisplayRefreshRate); + vsyncOffsetNs = (vsyncDurationNs * VSYNC_OFFSET_PERCENTAGE) / 100; + } + } + + private boolean isDriftTooLarge(long frameTimeNs, long releaseTimeNs) { + long elapsedFrameTimeNs = frameTimeNs - syncFramePresentationTimeNs; + long elapsedReleaseTimeNs = releaseTimeNs - syncUnadjustedReleaseTimeNs; + return Math.abs(elapsedReleaseTimeNs - elapsedFrameTimeNs) > MAX_ALLOWED_DRIFT_NS; + } + + private static long closestVsync(long releaseTime, long sampledVsyncTime, long vsyncDuration) { + long vsyncCount = (releaseTime - sampledVsyncTime) / vsyncDuration; + long snappedTimeNs = sampledVsyncTime + (vsyncDuration * vsyncCount); + long snappedBeforeNs; + long snappedAfterNs; + if (releaseTime <= snappedTimeNs) { + snappedBeforeNs = snappedTimeNs - vsyncDuration; + snappedAfterNs = snappedTimeNs; + } else { + snappedBeforeNs = snappedTimeNs; + snappedAfterNs = snappedTimeNs + vsyncDuration; + } + long snappedAfterDiff = snappedAfterNs - releaseTime; + long snappedBeforeDiff = releaseTime - snappedBeforeNs; + return snappedAfterDiff < snappedBeforeDiff ? snappedAfterNs : snappedBeforeNs; + } + + @TargetApi(17) + private final class DefaultDisplayListener implements DisplayManager.DisplayListener { + + private final DisplayManager displayManager; + + public DefaultDisplayListener(DisplayManager displayManager) { + this.displayManager = displayManager; + } + + public void register() { + displayManager.registerDisplayListener(this, null); + } + + public void unregister() { + displayManager.unregisterDisplayListener(this); + } + + @Override + public void onDisplayAdded(int displayId) { + // Do nothing. + } + + @Override + public void onDisplayRemoved(int displayId) { + // Do nothing. + } + + @Override + public void onDisplayChanged(int displayId) { + if (displayId == Display.DEFAULT_DISPLAY) { + updateDefaultDisplayRefreshRateParams(); + } + } + + } + + /** + * Samples display vsync timestamps. A single instance using a single {@link Choreographer} is + * shared by all {@link VideoFrameReleaseTimeHelper} instances. This is done to avoid a resource + * leak in the platform on API levels prior to 23. See [Internal: b/12455729]. + */ + private static final class VSyncSampler implements FrameCallback, Handler.Callback { + + public volatile long sampledVsyncTimeNs; + + private static final int CREATE_CHOREOGRAPHER = 0; + private static final int MSG_ADD_OBSERVER = 1; + private static final int MSG_REMOVE_OBSERVER = 2; + + private static final VSyncSampler INSTANCE = new VSyncSampler(); + + private final Handler handler; + private final HandlerThread choreographerOwnerThread; + private Choreographer choreographer; + private int observerCount; + + public static VSyncSampler getInstance() { + return INSTANCE; + } + + private VSyncSampler() { + sampledVsyncTimeNs = C.TIME_UNSET; + choreographerOwnerThread = new HandlerThread("ChoreographerOwner:Handler"); + choreographerOwnerThread.start(); + handler = Util.createHandler(choreographerOwnerThread.getLooper(), /* callback= */ this); + handler.sendEmptyMessage(CREATE_CHOREOGRAPHER); + } + + /** + * Notifies the sampler that a {@link VideoFrameReleaseTimeHelper} is observing + * {@link #sampledVsyncTimeNs}, and hence that the value should be periodically updated. + */ + public void addObserver() { + handler.sendEmptyMessage(MSG_ADD_OBSERVER); + } + + /** + * Notifies the sampler that a {@link VideoFrameReleaseTimeHelper} is no longer observing + * {@link #sampledVsyncTimeNs}. + */ + public void removeObserver() { + handler.sendEmptyMessage(MSG_REMOVE_OBSERVER); + } + + @Override + public void doFrame(long vsyncTimeNs) { + sampledVsyncTimeNs = vsyncTimeNs; + choreographer.postFrameCallbackDelayed(this, CHOREOGRAPHER_SAMPLE_DELAY_MILLIS); + } + + @Override + public boolean handleMessage(Message message) { + switch (message.what) { + case CREATE_CHOREOGRAPHER: { + createChoreographerInstanceInternal(); + return true; + } + case MSG_ADD_OBSERVER: { + addObserverInternal(); + return true; + } + case MSG_REMOVE_OBSERVER: { + removeObserverInternal(); + return true; + } + default: { + return false; + } + } + } + + private void createChoreographerInstanceInternal() { + choreographer = Choreographer.getInstance(); + } + + private void addObserverInternal() { + observerCount++; + if (observerCount == 1) { + choreographer.postFrameCallback(this); + } + } + + private void removeObserverInternal() { + observerCount--; + if (observerCount == 0) { + choreographer.removeFrameCallback(this); + sampledVsyncTimeNs = C.TIME_UNSET; + } + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoListener.java new file mode 100644 index 0000000000..a469366b78 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoListener.java @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +/** A listener for metadata corresponding to video being rendered. */ +public interface VideoListener { + + /** + * Called each time there's a change in the size of the video being rendered. + * + * @param width The video width in pixels. + * @param height The video height in pixels. + * @param unappliedRotationDegrees For videos that require a rotation, this is the clockwise + * rotation in degrees that the application should apply for the video for it to be rendered + * in the correct orientation. This value will always be zero on API levels 21 and above, + * since the renderer will apply all necessary rotations internally. On earlier API levels + * this is not possible. Applications that use {@link android.view.TextureView} can apply the + * rotation by calling {@link android.view.TextureView#setTransform}. Applications that do not + * expect to encounter rotated videos can safely ignore this parameter. + * @param pixelWidthHeightRatio The width to height ratio of each pixel. For the normal case of + * square pixels this will be equal to 1.0. Different values are indicative of anamorphic + * content. + */ + default void onVideoSizeChanged( + int width, int height, int unappliedRotationDegrees, float pixelWidthHeightRatio) {} + + /** + * Called each time there's a change in the size of the surface onto which the video is being + * rendered. + * + * @param width The surface width in pixels. May be {@link + * com.google.android.exoplayer2.C#LENGTH_UNSET} if unknown, or 0 if the video is not rendered + * onto a surface. + * @param height The surface height in pixels. May be {@link + * com.google.android.exoplayer2.C#LENGTH_UNSET} if unknown, or 0 if the video is not rendered + * onto a surface. + */ + default void onSurfaceSizeChanged(int width, int height) {} + + /** + * Called when a frame is rendered for the first time since setting the surface, and when a frame + * is rendered for the first time since a video track was selected. + */ + default void onRenderedFirstFrame() {} +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoRendererEventListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoRendererEventListener.java new file mode 100644 index 0000000000..6509a353b2 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/VideoRendererEventListener.java @@ -0,0 +1,198 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull; + +import android.os.Handler; +import android.os.SystemClock; +import android.view.Surface; +import android.view.TextureView; +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Renderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderCounters; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; + +/** + * Listener of video {@link Renderer} events. All methods have no-op default implementations to + * allow selective overrides. + */ +public interface VideoRendererEventListener { + + /** + * Called when the renderer is enabled. + * + * @param counters {@link DecoderCounters} that will be updated by the renderer for as long as it + * remains enabled. + */ + default void onVideoEnabled(DecoderCounters counters) {} + + /** + * Called when a decoder is created. + * + * @param decoderName The decoder that was created. + * @param initializedTimestampMs {@link SystemClock#elapsedRealtime()} when initialization + * finished. + * @param initializationDurationMs The time taken to initialize the decoder in milliseconds. + */ + default void onVideoDecoderInitialized( + String decoderName, long initializedTimestampMs, long initializationDurationMs) {} + + /** + * Called when the format of the media being consumed by the renderer changes. + * + * @param format The new format. + */ + default void onVideoInputFormatChanged(Format format) {} + + /** + * Called to report the number of frames dropped by the renderer. Dropped frames are reported + * whenever the renderer is stopped having dropped frames, and optionally, whenever the count + * reaches a specified threshold whilst the renderer is started. + * + * @param count The number of dropped frames. + * @param elapsedMs The duration in milliseconds over which the frames were dropped. This duration + * is timed from when the renderer was started or from when dropped frames were last reported + * (whichever was more recent), and not from when the first of the reported drops occurred. + */ + default void onDroppedFrames(int count, long elapsedMs) {} + + /** + * Called before a frame is rendered for the first time since setting the surface, and each time + * there's a change in the size, rotation or pixel aspect ratio of the video being rendered. + * + * @param width The video width in pixels. + * @param height The video height in pixels. + * @param unappliedRotationDegrees For videos that require a rotation, this is the clockwise + * rotation in degrees that the application should apply for the video for it to be rendered + * in the correct orientation. This value will always be zero on API levels 21 and above, + * since the renderer will apply all necessary rotations internally. On earlier API levels + * this is not possible. Applications that use {@link TextureView} can apply the rotation by + * calling {@link TextureView#setTransform}. Applications that do not expect to encounter + * rotated videos can safely ignore this parameter. + * @param pixelWidthHeightRatio The width to height ratio of each pixel. For the normal case of + * square pixels this will be equal to 1.0. Different values are indicative of anamorphic + * content. + */ + default void onVideoSizeChanged( + int width, int height, int unappliedRotationDegrees, float pixelWidthHeightRatio) {} + + /** + * Called when a frame is rendered for the first time since setting the surface, and when a frame + * is rendered for the first time since the renderer was reset. + * + * @param surface The {@link Surface} to which a first frame has been rendered, or {@code null} if + * the renderer renders to something that isn't a {@link Surface}. + */ + default void onRenderedFirstFrame(@Nullable Surface surface) {} + + /** + * Called when the renderer is disabled. + * + * @param counters {@link DecoderCounters} that were updated by the renderer. + */ + default void onVideoDisabled(DecoderCounters counters) {} + + /** + * Dispatches events to a {@link VideoRendererEventListener}. + */ + final class EventDispatcher { + + @Nullable private final Handler handler; + @Nullable private final VideoRendererEventListener listener; + + /** + * @param handler A handler for dispatching events, or null if creating a dummy instance. + * @param listener The listener to which events should be dispatched, or null if creating a + * dummy instance. + */ + public EventDispatcher(@Nullable Handler handler, + @Nullable VideoRendererEventListener listener) { + this.handler = listener != null ? Assertions.checkNotNull(handler) : null; + this.listener = listener; + } + + /** Invokes {@link VideoRendererEventListener#onVideoEnabled(DecoderCounters)}. */ + public void enabled(DecoderCounters decoderCounters) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onVideoEnabled(decoderCounters)); + } + } + + /** Invokes {@link VideoRendererEventListener#onVideoDecoderInitialized(String, long, long)}. */ + public void decoderInitialized( + String decoderName, long initializedTimestampMs, long initializationDurationMs) { + if (handler != null) { + handler.post( + () -> + castNonNull(listener) + .onVideoDecoderInitialized( + decoderName, initializedTimestampMs, initializationDurationMs)); + } + } + + /** Invokes {@link VideoRendererEventListener#onVideoInputFormatChanged(Format)}. */ + public void inputFormatChanged(Format format) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onVideoInputFormatChanged(format)); + } + } + + /** Invokes {@link VideoRendererEventListener#onDroppedFrames(int, long)}. */ + public void droppedFrames(int droppedFrameCount, long elapsedMs) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onDroppedFrames(droppedFrameCount, elapsedMs)); + } + } + + /** Invokes {@link VideoRendererEventListener#onVideoSizeChanged(int, int, int, float)}. */ + public void videoSizeChanged( + int width, + int height, + final int unappliedRotationDegrees, + final float pixelWidthHeightRatio) { + if (handler != null) { + handler.post( + () -> + castNonNull(listener) + .onVideoSizeChanged( + width, height, unappliedRotationDegrees, pixelWidthHeightRatio)); + } + } + + /** Invokes {@link VideoRendererEventListener#onRenderedFirstFrame(Surface)}. */ + public void renderedFirstFrame(@Nullable Surface surface) { + if (handler != null) { + handler.post(() -> castNonNull(listener).onRenderedFirstFrame(surface)); + } + } + + /** Invokes {@link VideoRendererEventListener#onVideoDisabled(DecoderCounters)}. */ + public void disabled(DecoderCounters counters) { + counters.ensureUpdated(); + if (handler != null) { + handler.post( + () -> { + counters.ensureUpdated(); + castNonNull(listener).onVideoDisabled(counters); + }); + } + } + + } + +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/package-info.java new file mode 100644 index 0000000000..7053c14d16 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.video; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/CameraMotionListener.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/CameraMotionListener.java new file mode 100644 index 0000000000..87bd94c5bc --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/CameraMotionListener.java @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical; + +/** Listens camera motion. */ +public interface CameraMotionListener { + + /** + * Called when a new camera motion is read. This method is called on the playback thread. + * + * @param timeUs The presentation time of the data. + * @param rotation Angle axis orientation in radians representing the rotation from camera + * coordinate system to world coordinate system. + */ + void onCameraMotion(long timeUs, float[] rotation); + + /** Called when the camera motion track position is reset or the track is disabled. */ + void onCameraMotionReset(); +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/CameraMotionRenderer.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/CameraMotionRenderer.java new file mode 100644 index 0000000000..378363aca0 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/CameraMotionRenderer.java @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.BaseRenderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.ExoPlaybackException; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Format; +import org.mozilla.thirdparty.com.google.android.exoplayer2.FormatHolder; +import org.mozilla.thirdparty.com.google.android.exoplayer2.Renderer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.RendererCapabilities; +import org.mozilla.thirdparty.com.google.android.exoplayer2.decoder.DecoderInputBuffer; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.MimeTypes; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import java.nio.ByteBuffer; + +/** A {@link Renderer} that parses the camera motion track. */ +public class CameraMotionRenderer extends BaseRenderer { + + // The amount of time to read samples ahead of the current time. + private static final int SAMPLE_WINDOW_DURATION_US = 100000; + + private final DecoderInputBuffer buffer; + private final ParsableByteArray scratch; + + private long offsetUs; + @Nullable private CameraMotionListener listener; + private long lastTimestampUs; + + public CameraMotionRenderer() { + super(C.TRACK_TYPE_CAMERA_MOTION); + buffer = new DecoderInputBuffer(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_NORMAL); + scratch = new ParsableByteArray(); + } + + @Override + @Capabilities + public int supportsFormat(Format format) { + return MimeTypes.APPLICATION_CAMERA_MOTION.equals(format.sampleMimeType) + ? RendererCapabilities.create(FORMAT_HANDLED) + : RendererCapabilities.create(FORMAT_UNSUPPORTED_TYPE); + } + + @Override + public void handleMessage(int messageType, @Nullable Object message) throws ExoPlaybackException { + if (messageType == C.MSG_SET_CAMERA_MOTION_LISTENER) { + listener = (CameraMotionListener) message; + } else { + super.handleMessage(messageType, message); + } + } + + @Override + protected void onStreamChanged(Format[] formats, long offsetUs) throws ExoPlaybackException { + this.offsetUs = offsetUs; + } + + @Override + protected void onPositionReset(long positionUs, boolean joining) throws ExoPlaybackException { + resetListener(); + } + + @Override + protected void onDisabled() { + resetListener(); + } + + @Override + public void render(long positionUs, long elapsedRealtimeUs) throws ExoPlaybackException { + // Keep reading available samples as long as the sample time is not too far into the future. + while (!hasReadStreamToEnd() && lastTimestampUs < positionUs + SAMPLE_WINDOW_DURATION_US) { + buffer.clear(); + FormatHolder formatHolder = getFormatHolder(); + int result = readSource(formatHolder, buffer, /* formatRequired= */ false); + if (result != C.RESULT_BUFFER_READ || buffer.isEndOfStream()) { + return; + } + + buffer.flip(); + lastTimestampUs = buffer.timeUs; + if (listener != null) { + float[] rotation = parseMetadata(Util.castNonNull(buffer.data)); + if (rotation != null) { + Util.castNonNull(listener).onCameraMotion(lastTimestampUs - offsetUs, rotation); + } + } + } + } + + @Override + public boolean isEnded() { + return hasReadStreamToEnd(); + } + + @Override + public boolean isReady() { + return true; + } + + private @Nullable float[] parseMetadata(ByteBuffer data) { + if (data.remaining() != 16) { + return null; + } + scratch.reset(data.array(), data.limit()); + scratch.setPosition(data.arrayOffset() + 4); // skip reserved bytes too. + float[] result = new float[3]; + for (int i = 0; i < 3; i++) { + result[i] = Float.intBitsToFloat(scratch.readLittleEndianInt()); + } + return result; + } + + private void resetListener() { + lastTimestampUs = 0; + if (listener != null) { + listener.onCameraMotionReset(); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/FrameRotationQueue.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/FrameRotationQueue.java new file mode 100644 index 0000000000..450058fb6a --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/FrameRotationQueue.java @@ -0,0 +1,124 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical; + +import android.opengl.Matrix; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.TimedValueQueue; + +/** + * This class serves multiple purposes: + * + *

    + *
  • Queues the rotation metadata extracted from camera motion track. + *
  • Converts the metadata to rotation matrices in OpenGl coordinate system. + *
  • Recenters the rotations to componsate the yaw of the initial rotation. + *
+ */ +public final class FrameRotationQueue { + private final float[] recenterMatrix; + private final float[] rotationMatrix; + private final TimedValueQueue rotations; + private boolean recenterMatrixComputed; + + public FrameRotationQueue() { + recenterMatrix = new float[16]; + rotationMatrix = new float[16]; + rotations = new TimedValueQueue<>(); + } + + /** + * Sets a rotation for a given timestamp. + * + * @param timestampUs Timestamp of the rotation. + * @param angleAxis Angle axis orientation in radians representing the rotation from camera + * coordinate system to world coordinate system. + */ + public void setRotation(long timestampUs, float[] angleAxis) { + rotations.add(timestampUs, angleAxis); + } + + /** Removes all of the rotations and forces rotations to be recentered. */ + public void reset() { + rotations.clear(); + recenterMatrixComputed = false; + } + + /** + * Copies the rotation matrix with the greatest timestamp which is less than or equal to the given + * timestamp to {@code matrix}. Removes all older rotations and the returned one from the queue. + * Does nothing if there is no such rotation. + * + * @param matrix The rotation matrix. + * @param timestampUs The time in microseconds to query the rotation. + * @return Whether a rotation matrix is copied to {@code matrix}. + */ + public boolean pollRotationMatrix(float[] matrix, long timestampUs) { + float[] rotation = rotations.pollFloor(timestampUs); + if (rotation == null) { + return false; + } + // TODO [Internal: b/113315546]: Slerp between the floor and ceil rotation. + getRotationMatrixFromAngleAxis(rotationMatrix, rotation); + if (!recenterMatrixComputed) { + computeRecenterMatrix(recenterMatrix, rotationMatrix); + recenterMatrixComputed = true; + } + Matrix.multiplyMM(matrix, 0, recenterMatrix, 0, rotationMatrix, 0); + return true; + } + + /** + * Computes a recentering matrix from the given angle-axis rotation only accounting for yaw. Roll + * and tilt will not be compensated. + * + * @param recenterMatrix The recenter matrix. + * @param rotationMatrix The rotation matrix. + */ + public static void computeRecenterMatrix(float[] recenterMatrix, float[] rotationMatrix) { + // The re-centering matrix is computed as follows: + // recenter.row(2) = temp.col(2).transpose(); + // recenter.row(0) = recenter.row(1).cross(recenter.row(2)).normalized(); + // recenter.row(2) = recenter.row(0).cross(recenter.row(1)).normalized(); + // | temp[10] 0 -temp[8] 0| + // | 0 1 0 0| + // recenter = | temp[8] 0 temp[10] 0| + // | 0 0 0 1| + Matrix.setIdentityM(recenterMatrix, 0); + float normRowSqr = + rotationMatrix[10] * rotationMatrix[10] + rotationMatrix[8] * rotationMatrix[8]; + float normRow = (float) Math.sqrt(normRowSqr); + recenterMatrix[0] = rotationMatrix[10] / normRow; + recenterMatrix[2] = rotationMatrix[8] / normRow; + recenterMatrix[8] = -rotationMatrix[8] / normRow; + recenterMatrix[10] = rotationMatrix[10] / normRow; + } + + private static void getRotationMatrixFromAngleAxis(float[] matrix, float[] angleAxis) { + // Convert coordinates to OpenGL coordinates. + // CAMM motion metadata: +x right, +y down, and +z forward. + // OpenGL: +x right, +y up, -z forwards + float x = angleAxis[0]; + float y = -angleAxis[1]; + float z = -angleAxis[2]; + float angleRad = Matrix.length(x, y, z); + if (angleRad != 0) { + float angleDeg = (float) Math.toDegrees(angleRad); + Matrix.setRotateM(matrix, 0, angleDeg, x / angleRad, y / angleRad, z / angleRad); + } else { + Matrix.setIdentityM(matrix, 0); + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/Projection.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/Projection.java new file mode 100644 index 0000000000..e3d614cab3 --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/Projection.java @@ -0,0 +1,236 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical; + +import androidx.annotation.IntDef; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C.StereoMode; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions; +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; + +/** The projection mesh used with 360/VR videos. */ +public final class Projection { + + /** Enforces allowed (sub) mesh draw modes. */ + @Documented + @Retention(RetentionPolicy.SOURCE) + @IntDef({DRAW_MODE_TRIANGLES, DRAW_MODE_TRIANGLES_STRIP, DRAW_MODE_TRIANGLES_FAN}) + public @interface DrawMode {} + /** Triangle draw mode. */ + public static final int DRAW_MODE_TRIANGLES = 0; + /** Triangle strip draw mode. */ + public static final int DRAW_MODE_TRIANGLES_STRIP = 1; + /** Triangle fan draw mode. */ + public static final int DRAW_MODE_TRIANGLES_FAN = 2; + + /** Number of position coordinates per vertex. */ + public static final int TEXTURE_COORDS_PER_VERTEX = 2; + /** Number of texture coordinates per vertex. */ + public static final int POSITION_COORDS_PER_VERTEX = 3; + + /** + * Generates a complete sphere equirectangular projection. + * + * @param stereoMode A {@link C.StereoMode} value. + */ + public static Projection createEquirectangular(@C.StereoMode int stereoMode) { + return createEquirectangular( + /* radius= */ 50, // Should be large enough that there are no stereo artifacts. + /* latitudes= */ 36, // Should be large enough to prevent videos looking wavy. + /* longitudes= */ 72, // Should be large enough to prevent videos looking wavy. + /* verticalFovDegrees= */ 180, + /* horizontalFovDegrees= */ 360, + stereoMode); + } + + /** + * Generates an equirectangular projection. + * + * @param radius Size of the sphere. Must be > 0. + * @param latitudes Number of rows that make up the sphere. Must be >= 1. + * @param longitudes Number of columns that make up the sphere. Must be >= 1. + * @param verticalFovDegrees Total latitudinal degrees that are covered by the sphere. Must be in + * (0, 180]. + * @param horizontalFovDegrees Total longitudinal degrees that are covered by the sphere.Must be + * in (0, 360]. + * @param stereoMode A {@link C.StereoMode} value. + * @return an equirectangular projection. + */ + public static Projection createEquirectangular( + float radius, + int latitudes, + int longitudes, + float verticalFovDegrees, + float horizontalFovDegrees, + @C.StereoMode int stereoMode) { + Assertions.checkArgument(radius > 0); + Assertions.checkArgument(latitudes >= 1); + Assertions.checkArgument(longitudes >= 1); + Assertions.checkArgument(verticalFovDegrees > 0 && verticalFovDegrees <= 180); + Assertions.checkArgument(horizontalFovDegrees > 0 && horizontalFovDegrees <= 360); + + // Compute angular size in radians of each UV quad. + float verticalFovRads = (float) Math.toRadians(verticalFovDegrees); + float horizontalFovRads = (float) Math.toRadians(horizontalFovDegrees); + float quadHeightRads = verticalFovRads / latitudes; + float quadWidthRads = horizontalFovRads / longitudes; + + // Each latitude strip has 2 * (longitudes quads + extra edge) vertices + 2 degenerate vertices. + int vertexCount = (2 * (longitudes + 1) + 2) * latitudes; + // Buffer to return. + float[] vertexData = new float[vertexCount * POSITION_COORDS_PER_VERTEX]; + float[] textureData = new float[vertexCount * TEXTURE_COORDS_PER_VERTEX]; + + // Generate the data for the sphere which is a set of triangle strips representing each + // latitude band. + int vOffset = 0; // Offset into the vertexData array. + int tOffset = 0; // Offset into the textureData array. + // (i, j) represents a quad in the equirectangular sphere. + for (int j = 0; j < latitudes; ++j) { // For each horizontal triangle strip. + // Each latitude band lies between the two phi values. Each vertical edge on a band lies on + // a theta value. + float phiLow = quadHeightRads * j - verticalFovRads / 2; + float phiHigh = quadHeightRads * (j + 1) - verticalFovRads / 2; + + for (int i = 0; i < longitudes + 1; ++i) { // For each vertical edge in the band. + for (int k = 0; k < 2; ++k) { // For low and high points on an edge. + // For each point, determine it's position in polar coordinates. + float phi = k == 0 ? phiLow : phiHigh; + float theta = quadWidthRads * i + (float) Math.PI - horizontalFovRads / 2; + + // Set vertex position data as Cartesian coordinates. + vertexData[vOffset++] = -(float) (radius * Math.sin(theta) * Math.cos(phi)); + vertexData[vOffset++] = (float) (radius * Math.sin(phi)); + vertexData[vOffset++] = (float) (radius * Math.cos(theta) * Math.cos(phi)); + + textureData[tOffset++] = i * quadWidthRads / horizontalFovRads; + textureData[tOffset++] = (j + k) * quadHeightRads / verticalFovRads; + + // Break up the triangle strip with degenerate vertices by copying first and last points. + if ((i == 0 && k == 0) || (i == longitudes && k == 1)) { + System.arraycopy( + vertexData, + vOffset - POSITION_COORDS_PER_VERTEX, + vertexData, + vOffset, + POSITION_COORDS_PER_VERTEX); + vOffset += POSITION_COORDS_PER_VERTEX; + System.arraycopy( + textureData, + tOffset - TEXTURE_COORDS_PER_VERTEX, + textureData, + tOffset, + TEXTURE_COORDS_PER_VERTEX); + tOffset += TEXTURE_COORDS_PER_VERTEX; + } + } + // Move on to the next vertical edge in the triangle strip. + } + // Move on to the next triangle strip. + } + SubMesh subMesh = + new SubMesh(SubMesh.VIDEO_TEXTURE_ID, vertexData, textureData, DRAW_MODE_TRIANGLES_STRIP); + return new Projection(new Mesh(subMesh), stereoMode); + } + + /** The Mesh corresponding to the left eye. */ + public final Mesh leftMesh; + /** + * The Mesh corresponding to the right eye. If {@code singleMesh} is true then this mesh is + * identical to {@link #leftMesh}. + */ + public final Mesh rightMesh; + /** The stereo mode. */ + public final @StereoMode int stereoMode; + /** Whether the left and right mesh are identical. */ + public final boolean singleMesh; + + /** + * Creates a Projection with single mesh. + * + * @param mesh the Mesh for both eyes. + * @param stereoMode A {@link StereoMode} value. + */ + public Projection(Mesh mesh, int stereoMode) { + this(mesh, mesh, stereoMode); + } + + /** + * Creates a Projection with dual mesh. Use {@link #Projection(Mesh, int)} if there is single mesh + * for both eyes. + * + * @param leftMesh the Mesh corresponding to the left eye. + * @param rightMesh the Mesh corresponding to the right eye. + * @param stereoMode A {@link C.StereoMode} value. + */ + public Projection(Mesh leftMesh, Mesh rightMesh, int stereoMode) { + this.leftMesh = leftMesh; + this.rightMesh = rightMesh; + this.stereoMode = stereoMode; + this.singleMesh = leftMesh == rightMesh; + } + + /** The sub mesh associated with the {@link Mesh}. */ + public static final class SubMesh { + /** Texture ID for video frames. */ + public static final int VIDEO_TEXTURE_ID = 0; + + /** Texture ID. */ + public final int textureId; + /** The drawing mode. One of {@link DrawMode}. */ + public final @DrawMode int mode; + /** The SubMesh vertices. */ + public final float[] vertices; + /** The SubMesh texture coordinates. */ + public final float[] textureCoords; + + public SubMesh(int textureId, float[] vertices, float[] textureCoords, @DrawMode int mode) { + this.textureId = textureId; + Assertions.checkArgument( + vertices.length * (long) TEXTURE_COORDS_PER_VERTEX + == textureCoords.length * (long) POSITION_COORDS_PER_VERTEX); + this.vertices = vertices; + this.textureCoords = textureCoords; + this.mode = mode; + } + + /** Returns the SubMesh vertex count. */ + public int getVertexCount() { + return vertices.length / POSITION_COORDS_PER_VERTEX; + } + } + + /** A Mesh associated with the projection scene. */ + public static final class Mesh { + private final SubMesh[] subMeshes; + + public Mesh(SubMesh... subMeshes) { + this.subMeshes = subMeshes; + } + + /** Returns the number of sub meshes. */ + public int getSubMeshCount() { + return subMeshes.length; + } + + /** Returns the SubMesh for the given index. */ + public SubMesh getSubMesh(int index) { + return subMeshes[index]; + } + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/ProjectionDecoder.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/ProjectionDecoder.java new file mode 100644 index 0000000000..cff4b2845d --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/ProjectionDecoder.java @@ -0,0 +1,238 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical; + +import androidx.annotation.Nullable; +import org.mozilla.thirdparty.com.google.android.exoplayer2.C; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableBitArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.ParsableByteArray; +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical.Projection.Mesh; +import org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical.Projection.SubMesh; +import java.util.ArrayList; +import java.util.zip.Inflater; + +/** + * A decoder for the projection mesh. + * + *

The mesh boxes parsed are described at + * Spherical Video V2 RFC. + * + *

The decoder does not perform CRC checks at the moment. + */ +public final class ProjectionDecoder { + + private static final int TYPE_YTMP = 0x79746d70; + private static final int TYPE_MSHP = 0x6d736870; + private static final int TYPE_RAW = 0x72617720; + private static final int TYPE_DFL8 = 0x64666c38; + private static final int TYPE_MESH = 0x6d657368; + private static final int TYPE_PROJ = 0x70726f6a; + + // Sanity limits to prevent a bad file from creating an OOM situation. We don't expect a mesh to + // exceed these limits. + private static final int MAX_COORDINATE_COUNT = 10000; + private static final int MAX_VERTEX_COUNT = 32 * 1000; + private static final int MAX_TRIANGLE_INDICES = 128 * 1000; + + private ProjectionDecoder() {} + + /* + * Decodes the projection data. + * + * @param projectionData The projection data. + * @param stereoMode A {@link C.StereoMode} value. + * @return The projection or null if the data can't be decoded. + */ + public static @Nullable Projection decode(byte[] projectionData, @C.StereoMode int stereoMode) { + ParsableByteArray input = new ParsableByteArray(projectionData); + // MP4 containers include the proj box but webm containers do not. + // Both containers use mshp. + ArrayList meshes = null; + try { + meshes = isProj(input) ? parseProj(input) : parseMshp(input); + } catch (ArrayIndexOutOfBoundsException ignored) { + // Do nothing. + } + if (meshes == null) { + return null; + } else { + switch (meshes.size()) { + case 1: + return new Projection(meshes.get(0), stereoMode); + case 2: + return new Projection(meshes.get(0), meshes.get(1), stereoMode); + case 0: + default: + return null; + } + } + } + + /** Returns true if the input contains a proj box. Indicates MP4 container. */ + private static boolean isProj(ParsableByteArray input) { + input.skipBytes(4); // size + int type = input.readInt(); + input.setPosition(0); + return type == TYPE_PROJ; + } + + private static @Nullable ArrayList parseProj(ParsableByteArray input) { + input.skipBytes(8); // size and type. + int position = input.getPosition(); + int limit = input.limit(); + while (position < limit) { + int childEnd = position + input.readInt(); + if (childEnd <= position || childEnd > limit) { + return null; + } + int childAtomType = input.readInt(); + // Some early files named the atom ytmp rather than mshp. + if (childAtomType == TYPE_YTMP || childAtomType == TYPE_MSHP) { + input.setLimit(childEnd); + return parseMshp(input); + } + position = childEnd; + input.setPosition(position); + } + return null; + } + + private static @Nullable ArrayList parseMshp(ParsableByteArray input) { + int version = input.readUnsignedByte(); + if (version != 0) { + return null; + } + input.skipBytes(7); // flags + crc. + int encoding = input.readInt(); + if (encoding == TYPE_DFL8) { + ParsableByteArray output = new ParsableByteArray(); + Inflater inflater = new Inflater(true); + try { + if (!Util.inflate(input, output, inflater)) { + return null; + } + } finally { + inflater.end(); + } + input = output; + } else if (encoding != TYPE_RAW) { + return null; + } + return parseRawMshpData(input); + } + + /** Parses MSHP data after the encoding_four_cc field. */ + private static @Nullable ArrayList parseRawMshpData(ParsableByteArray input) { + ArrayList meshes = new ArrayList<>(); + int position = input.getPosition(); + int limit = input.limit(); + while (position < limit) { + int childEnd = position + input.readInt(); + if (childEnd <= position || childEnd > limit) { + return null; + } + int childAtomType = input.readInt(); + if (childAtomType == TYPE_MESH) { + Mesh mesh = parseMesh(input); + if (mesh == null) { + return null; + } + meshes.add(mesh); + } + position = childEnd; + input.setPosition(position); + } + return meshes; + } + + private static @Nullable Mesh parseMesh(ParsableByteArray input) { + // Read the coordinates. + int coordinateCount = input.readInt(); + if (coordinateCount > MAX_COORDINATE_COUNT) { + return null; + } + float[] coordinates = new float[coordinateCount]; + for (int coordinate = 0; coordinate < coordinateCount; coordinate++) { + coordinates[coordinate] = input.readFloat(); + } + // Read the vertices. + int vertexCount = input.readInt(); + if (vertexCount > MAX_VERTEX_COUNT) { + return null; + } + + final double log2 = Math.log(2.0); + int coordinateCountSizeBits = (int) Math.ceil(Math.log(2.0 * coordinateCount) / log2); + + ParsableBitArray bitInput = new ParsableBitArray(input.data); + bitInput.setPosition(input.getPosition() * 8); + float[] vertices = new float[vertexCount * 5]; + int[] coordinateIndices = new int[5]; + int vertexIndex = 0; + for (int vertex = 0; vertex < vertexCount; vertex++) { + for (int i = 0; i < 5; i++) { + int coordinateIndex = + coordinateIndices[i] + decodeZigZag(bitInput.readBits(coordinateCountSizeBits)); + if (coordinateIndex >= coordinateCount || coordinateIndex < 0) { + return null; + } + vertices[vertexIndex++] = coordinates[coordinateIndex]; + coordinateIndices[i] = coordinateIndex; + } + } + + // Pad to next byte boundary + bitInput.setPosition(((bitInput.getPosition() + 7) & ~7)); + + int subMeshCount = bitInput.readBits(32); + SubMesh[] subMeshes = new SubMesh[subMeshCount]; + for (int i = 0; i < subMeshCount; i++) { + int textureId = bitInput.readBits(8); + int drawMode = bitInput.readBits(8); + int triangleIndexCount = bitInput.readBits(32); + if (triangleIndexCount > MAX_TRIANGLE_INDICES) { + return null; + } + int vertexCountSizeBits = (int) Math.ceil(Math.log(2.0 * vertexCount) / log2); + int index = 0; + float[] triangleVertices = new float[triangleIndexCount * 3]; + float[] textureCoords = new float[triangleIndexCount * 2]; + for (int counter = 0; counter < triangleIndexCount; counter++) { + index += decodeZigZag(bitInput.readBits(vertexCountSizeBits)); + if (index < 0 || index >= vertexCount) { + return null; + } + triangleVertices[counter * 3] = vertices[index * 5]; + triangleVertices[counter * 3 + 1] = vertices[index * 5 + 1]; + triangleVertices[counter * 3 + 2] = vertices[index * 5 + 2]; + textureCoords[counter * 2] = vertices[index * 5 + 3]; + textureCoords[counter * 2 + 1] = vertices[index * 5 + 4]; + } + subMeshes[i] = new SubMesh(textureId, triangleVertices, textureCoords, drawMode); + } + return new Mesh(subMeshes); + } + + /** + * Decodes Zigzag encoding as described in + * https://developers.google.com/protocol-buffers/docs/encoding#signed-integers + */ + private static int decodeZigZag(int n) { + return (n >> 1) ^ -(n & 1); + } +} diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/package-info.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/package-info.java new file mode 100644 index 0000000000..7ab7fced0b --- /dev/null +++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/video/spherical/package-info.java @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2019 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +@NonNullApi +package org.mozilla.thirdparty.com.google.android.exoplayer2.video.spherical; + +import org.mozilla.thirdparty.com.google.android.exoplayer2.util.NonNullApi; -- cgit v1.2.3