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Diffstat (limited to 'dom/media/mediasource/TrackBuffersManager.cpp')
| -rw-r--r-- | dom/media/mediasource/TrackBuffersManager.cpp | 3092 |
1 files changed, 3092 insertions, 0 deletions
diff --git a/dom/media/mediasource/TrackBuffersManager.cpp b/dom/media/mediasource/TrackBuffersManager.cpp new file mode 100644 index 0000000000..779e1bd9d1 --- /dev/null +++ b/dom/media/mediasource/TrackBuffersManager.cpp @@ -0,0 +1,3092 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "TrackBuffersManager.h" +#include "ContainerParser.h" +#include "MediaSourceDemuxer.h" +#include "MediaSourceUtils.h" +#include "SourceBuffer.h" +#include "SourceBufferResource.h" +#include "SourceBufferTask.h" +#include "WebMDemuxer.h" +#include "mozilla/ErrorResult.h" +#include "mozilla/Preferences.h" +#include "mozilla/ProfilerLabels.h" +#include "mozilla/ProfilerMarkers.h" +#include "mozilla/StaticPrefs_media.h" +#include "nsMimeTypes.h" + +#ifdef MOZ_FMP4 +# include "MP4Demuxer.h" +#endif + +#include <limits> + +extern mozilla::LogModule* GetMediaSourceLog(); + +#define MSE_DEBUG(arg, ...) \ + DDMOZ_LOG(GetMediaSourceLog(), mozilla::LogLevel::Debug, "::%s: " arg, \ + __func__, ##__VA_ARGS__) +#define MSE_DEBUGV(arg, ...) \ + DDMOZ_LOG(GetMediaSourceLog(), mozilla::LogLevel::Verbose, "::%s: " arg, \ + __func__, ##__VA_ARGS__) + +mozilla::LogModule* GetMediaSourceSamplesLog() { + static mozilla::LazyLogModule sLogModule("MediaSourceSamples"); + return sLogModule; +} +#define SAMPLE_DEBUG(arg, ...) \ + DDMOZ_LOG(GetMediaSourceSamplesLog(), mozilla::LogLevel::Debug, \ + "::%s: " arg, __func__, ##__VA_ARGS__) + +namespace mozilla { + +using dom::SourceBufferAppendMode; +using media::TimeInterval; +using media::TimeIntervals; +using media::TimeUnit; +typedef SourceBufferTask::AppendBufferResult AppendBufferResult; +typedef SourceBufferAttributes::AppendState AppendState; + +static const char* AppendStateToStr(AppendState aState) { + switch (aState) { + case AppendState::WAITING_FOR_SEGMENT: + return "WAITING_FOR_SEGMENT"; + case AppendState::PARSING_INIT_SEGMENT: + return "PARSING_INIT_SEGMENT"; + case AppendState::PARSING_MEDIA_SEGMENT: + return "PARSING_MEDIA_SEGMENT"; + default: + return "IMPOSSIBLE"; + } +} + +static Atomic<uint32_t> sStreamSourceID(0u); + +class DispatchKeyNeededEvent : public Runnable { + public: + DispatchKeyNeededEvent(MediaSourceDecoder* aDecoder, + const nsTArray<uint8_t>& aInitData, + const nsString& aInitDataType) + : Runnable("DispatchKeyNeededEvent"), + mDecoder(aDecoder), + mInitData(aInitData.Clone()), + mInitDataType(aInitDataType) {} + NS_IMETHOD Run() override { + // Note: Null check the owner, as the decoder could have been shutdown + // since this event was dispatched. + MediaDecoderOwner* owner = mDecoder->GetOwner(); + if (owner) { + owner->DispatchEncrypted(mInitData, mInitDataType); + } + mDecoder = nullptr; + return NS_OK; + } + + private: + RefPtr<MediaSourceDecoder> mDecoder; + nsTArray<uint8_t> mInitData; + nsString mInitDataType; +}; + +TrackBuffersManager::TrackBuffersManager(MediaSourceDecoder* aParentDecoder, + const MediaContainerType& aType) + : mBufferFull(false), + mFirstInitializationSegmentReceived(false), + mChangeTypeReceived(false), + mNewMediaSegmentStarted(false), + mActiveTrack(false), + mType(aType), + mParser(ContainerParser::CreateForMIMEType(aType)), + mProcessedInput(0), + mParentDecoder(new nsMainThreadPtrHolder<MediaSourceDecoder>( + "TrackBuffersManager::mParentDecoder", aParentDecoder, + false /* strict */)), + mAbstractMainThread(aParentDecoder->AbstractMainThread()), + mEnded(false), + mVideoEvictionThreshold(Preferences::GetUint( + "media.mediasource.eviction_threshold.video", 100 * 1024 * 1024)), + mAudioEvictionThreshold(Preferences::GetUint( + "media.mediasource.eviction_threshold.audio", 20 * 1024 * 1024)), + mEvictionState(EvictionState::NO_EVICTION_NEEDED), + mMutex("TrackBuffersManager"), + mTaskQueue(aParentDecoder->GetDemuxer()->GetTaskQueue()), + mTaskQueueCapability(Some(EventTargetCapability{mTaskQueue.get()})) { + MOZ_ASSERT(NS_IsMainThread(), "Must be instanciated on the main thread"); + DDLINKCHILD("parser", mParser.get()); +} + +TrackBuffersManager::~TrackBuffersManager() { ShutdownDemuxers(); } + +RefPtr<TrackBuffersManager::AppendPromise> TrackBuffersManager::AppendData( + already_AddRefed<MediaByteBuffer> aData, + const SourceBufferAttributes& aAttributes) { + MOZ_ASSERT(NS_IsMainThread()); + RefPtr<MediaByteBuffer> data(aData); + MSE_DEBUG("Appending %zu bytes", data->Length()); + + mEnded = false; + + return InvokeAsync(static_cast<AbstractThread*>(GetTaskQueueSafe().get()), + this, __func__, &TrackBuffersManager::DoAppendData, + data.forget(), aAttributes); +} + +RefPtr<TrackBuffersManager::AppendPromise> TrackBuffersManager::DoAppendData( + already_AddRefed<MediaByteBuffer> aData, + const SourceBufferAttributes& aAttributes) { + RefPtr<AppendBufferTask> task = + new AppendBufferTask(std::move(aData), aAttributes); + RefPtr<AppendPromise> p = task->mPromise.Ensure(__func__); + QueueTask(task); + + return p; +} + +void TrackBuffersManager::QueueTask(SourceBufferTask* aTask) { + // The source buffer is a wrapped native, it would be unlinked twice and so + // the TrackBuffersManager::Detach() would also be called twice. Since the + // detach task has been done before, we could ignore this task. + RefPtr<TaskQueue> taskQueue = GetTaskQueueSafe(); + if (!taskQueue) { + MOZ_ASSERT(aTask->GetType() == SourceBufferTask::Type::Detach, + "only detach task could happen here!"); + MSE_DEBUG("Could not queue the task '%s' without task queue", + aTask->GetTypeName()); + return; + } + + if (!taskQueue->IsCurrentThreadIn()) { + nsresult rv = + taskQueue->Dispatch(NewRunnableMethod<RefPtr<SourceBufferTask>>( + "TrackBuffersManager::QueueTask", this, + &TrackBuffersManager::QueueTask, aTask)); + MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv)); + Unused << rv; + return; + } + mQueue.Push(aTask); + ProcessTasks(); +} + +void TrackBuffersManager::ProcessTasks() { + // ProcessTask is always called OnTaskQueue, however it is possible that it is + // called once again after a first Detach task has run, in which case + // mTaskQueue would be null. + // This can happen under two conditions: + // 1- Two Detach tasks were queued in a row due to a double cycle collection. + // 2- An call to ProcessTasks() had queued another run of ProcessTasks while + // a Detach task is pending. + // We handle these two cases by aborting early. + // A second Detach task was queued, prior the first one running, ignore it. + if (!mTaskQueue) { + RefPtr<SourceBufferTask> task = mQueue.Pop(); + if (!task) { + return; + } + MOZ_RELEASE_ASSERT(task->GetType() == SourceBufferTask::Type::Detach, + "only detach task could happen here!"); + MSE_DEBUG("Could not process the task '%s' after detached", + task->GetTypeName()); + return; + } + + mTaskQueueCapability->AssertOnCurrentThread(); + typedef SourceBufferTask::Type Type; + + if (mCurrentTask) { + // Already have a task pending. ProcessTask will be scheduled once the + // current task complete. + return; + } + RefPtr<SourceBufferTask> task = mQueue.Pop(); + if (!task) { + // nothing to do. + return; + } + + MSE_DEBUG("Process task '%s'", task->GetTypeName()); + switch (task->GetType()) { + case Type::AppendBuffer: + mCurrentTask = task; + if (!mInputBuffer || mInputBuffer->IsEmpty()) { + // Note: we reset mInputBuffer here to ensure it doesn't grow unbounded. + mInputBuffer.reset(); + mInputBuffer = Some(MediaSpan(task->As<AppendBufferTask>()->mBuffer)); + } else { + // mInputBuffer wasn't empty, so we can't just reset it, but we move + // the data into a new buffer to clear out data no longer in the span. + MSE_DEBUG( + "mInputBuffer not empty during append -- data will be copied to " + "new buffer. mInputBuffer->Length()=%zu " + "mInputBuffer->Buffer()->Length()=%zu", + mInputBuffer->Length(), mInputBuffer->Buffer()->Length()); + const RefPtr<MediaByteBuffer> newBuffer{new MediaByteBuffer()}; + // Set capacity outside of ctor to let us explicitly handle OOM. + const size_t newCapacity = + mInputBuffer->Length() + + task->As<AppendBufferTask>()->mBuffer->Length(); + if (!newBuffer->SetCapacity(newCapacity, fallible)) { + RejectAppend(NS_ERROR_OUT_OF_MEMORY, __func__); + return; + } + // Use infallible appends as we've already set capacity above. + newBuffer->AppendElements(mInputBuffer->Elements(), + mInputBuffer->Length()); + newBuffer->AppendElements(*task->As<AppendBufferTask>()->mBuffer); + mInputBuffer = Some(MediaSpan(newBuffer)); + } + mSourceBufferAttributes = MakeUnique<SourceBufferAttributes>( + task->As<AppendBufferTask>()->mAttributes); + mAppendWindow = TimeInterval( + TimeUnit::FromSeconds( + mSourceBufferAttributes->GetAppendWindowStart()), + TimeUnit::FromSeconds(mSourceBufferAttributes->GetAppendWindowEnd())); + ScheduleSegmentParserLoop(); + break; + case Type::RangeRemoval: { + bool rv = CodedFrameRemoval(task->As<RangeRemovalTask>()->mRange); + task->As<RangeRemovalTask>()->mPromise.Resolve(rv, __func__); + break; + } + case Type::EvictData: + DoEvictData(task->As<EvictDataTask>()->mPlaybackTime, + task->As<EvictDataTask>()->mSizeToEvict); + break; + case Type::Abort: + // not handled yet, and probably never. + break; + case Type::Reset: + CompleteResetParserState(); + break; + case Type::Detach: + mCurrentInputBuffer = nullptr; + MOZ_DIAGNOSTIC_ASSERT(mQueue.Length() == 0, + "Detach task must be the last"); + mVideoTracks.Reset(); + mAudioTracks.Reset(); + ShutdownDemuxers(); + ResetTaskQueue(); + return; + case Type::ChangeType: + MOZ_RELEASE_ASSERT(!mCurrentTask); + MSE_DEBUG("Processing type change from %s -> %s", + mType.OriginalString().get(), + task->As<ChangeTypeTask>()->mType.OriginalString().get()); + mType = task->As<ChangeTypeTask>()->mType; + mChangeTypeReceived = true; + mInitData = nullptr; + // A new input buffer will be created once we receive a new init segment. + // The first segment received after a changeType call must be an init + // segment. + mCurrentInputBuffer = nullptr; + CompleteResetParserState(); + break; + default: + NS_WARNING("Invalid Task"); + } + TaskQueueFromTaskQueue()->Dispatch( + NewRunnableMethod("TrackBuffersManager::ProcessTasks", this, + &TrackBuffersManager::ProcessTasks)); +} + +// The MSE spec requires that we abort the current SegmentParserLoop +// which is then followed by a call to ResetParserState. +// However due to our asynchronous design this causes inherent difficulties. +// As the spec behaviour is non deterministic anyway, we instead process all +// pending frames found in the input buffer. +void TrackBuffersManager::AbortAppendData() { + MOZ_ASSERT(NS_IsMainThread()); + MSE_DEBUG(""); + + QueueTask(new AbortTask()); +} + +void TrackBuffersManager::ResetParserState( + SourceBufferAttributes& aAttributes) { + MOZ_ASSERT(NS_IsMainThread()); + MSE_DEBUG(""); + + // Spec states: + // 1. If the append state equals PARSING_MEDIA_SEGMENT and the input buffer + // contains some complete coded frames, then run the coded frame processing + // algorithm until all of these complete coded frames have been processed. + // However, we will wait until all coded frames have been processed regardless + // of the value of append state. + QueueTask(new ResetTask()); + + // ResetParserState has some synchronous steps that much be performed now. + // The remaining steps will be performed once the ResetTask gets executed. + + // 6. If the mode attribute equals "sequence", then set the group start + // timestamp to the group end timestamp + if (aAttributes.GetAppendMode() == SourceBufferAppendMode::Sequence) { + aAttributes.SetGroupStartTimestamp(aAttributes.GetGroupEndTimestamp()); + } + // 8. Set append state to WAITING_FOR_SEGMENT. + aAttributes.SetAppendState(AppendState::WAITING_FOR_SEGMENT); +} + +RefPtr<TrackBuffersManager::RangeRemovalPromise> +TrackBuffersManager::RangeRemoval(TimeUnit aStart, TimeUnit aEnd) { + MOZ_ASSERT(NS_IsMainThread()); + MSE_DEBUG("From %.2f to %.2f", aStart.ToSeconds(), aEnd.ToSeconds()); + + mEnded = false; + + return InvokeAsync(static_cast<AbstractThread*>(GetTaskQueueSafe().get()), + this, __func__, + &TrackBuffersManager::CodedFrameRemovalWithPromise, + TimeInterval(aStart, aEnd)); +} + +TrackBuffersManager::EvictDataResult TrackBuffersManager::EvictData( + const TimeUnit& aPlaybackTime, int64_t aSize) { + MOZ_ASSERT(NS_IsMainThread()); + + if (aSize > EvictionThreshold()) { + // We're adding more data than we can hold. + return EvictDataResult::BUFFER_FULL; + } + const int64_t toEvict = GetSize() + aSize - EvictionThreshold(); + + const uint32_t canEvict = + Evictable(HasVideo() ? TrackInfo::kVideoTrack : TrackInfo::kAudioTrack); + + MSE_DEBUG("currentTime=%" PRId64 " buffered=%" PRId64 + "kB, eviction threshold=%" PRId64 + "kB, " + "evict=%" PRId64 "kB canevict=%" PRIu32 "kB", + aPlaybackTime.ToMicroseconds(), GetSize() / 1024, + EvictionThreshold() / 1024, toEvict / 1024, canEvict / 1024); + + if (toEvict <= 0) { + mEvictionState = EvictionState::NO_EVICTION_NEEDED; + return EvictDataResult::NO_DATA_EVICTED; + } + + EvictDataResult result; + + if (mBufferFull && mEvictionState == EvictionState::EVICTION_COMPLETED && + canEvict < uint32_t(toEvict)) { + // Our buffer is currently full. We will make another eviction attempt. + // However, the current appendBuffer will fail as we can't know ahead of + // time if the eviction will later succeed. + result = EvictDataResult::BUFFER_FULL; + } else { + mEvictionState = EvictionState::EVICTION_NEEDED; + result = EvictDataResult::NO_DATA_EVICTED; + } + MSE_DEBUG("Reached our size limit, schedule eviction of %" PRId64 + " bytes (%s)", + toEvict, + result == EvictDataResult::BUFFER_FULL ? "buffer full" + : "no data evicted"); + QueueTask(new EvictDataTask(aPlaybackTime, toEvict)); + + return result; +} + +void TrackBuffersManager::ChangeType(const MediaContainerType& aType) { + MOZ_ASSERT(NS_IsMainThread()); + + QueueTask(new ChangeTypeTask(aType)); +} + +TimeIntervals TrackBuffersManager::Buffered() const { + MSE_DEBUG(""); + + // http://w3c.github.io/media-source/index.html#widl-SourceBuffer-buffered + + MutexAutoLock mut(mMutex); + nsTArray<const TimeIntervals*> tracks; + if (HasVideo()) { + tracks.AppendElement(&mVideoBufferedRanges); + } + if (HasAudio()) { + tracks.AppendElement(&mAudioBufferedRanges); + } + + // 2. Let highest end time be the largest track buffer ranges end time across + // all the track buffers managed by this SourceBuffer object. + TimeUnit highestEndTime = HighestEndTime(tracks); + + // 3. Let intersection ranges equal a TimeRange object containing a single + // range from 0 to highest end time. + TimeIntervals intersection{ + TimeInterval(TimeUnit::FromSeconds(0), highestEndTime)}; + + // 4. For each track buffer managed by this SourceBuffer, run the following + // steps: + // 1. Let track ranges equal the track buffer ranges for the current track + // buffer. + for (const TimeIntervals* trackRanges : tracks) { + // 2. If readyState is "ended", then set the end time on the last range in + // track ranges to highest end time. + // 3. Let new intersection ranges equal the intersection between the + // intersection ranges and the track ranges. + if (mEnded) { + TimeIntervals tR = *trackRanges; + tR.Add(TimeInterval(tR.GetEnd(), highestEndTime)); + intersection.Intersection(tR); + } else { + intersection.Intersection(*trackRanges); + } + } + return intersection; +} + +int64_t TrackBuffersManager::GetSize() const { return mSizeSourceBuffer; } + +void TrackBuffersManager::Ended() { mEnded = true; } + +void TrackBuffersManager::Detach() { + MOZ_ASSERT(NS_IsMainThread()); + MSE_DEBUG(""); + QueueTask(new DetachTask()); +} + +void TrackBuffersManager::CompleteResetParserState() { + mTaskQueueCapability->AssertOnCurrentThread(); + AUTO_PROFILER_LABEL("TrackBuffersManager::CompleteResetParserState", + MEDIA_PLAYBACK); + MSE_DEBUG(""); + + // We shouldn't change mInputDemuxer while a demuxer init/reset request is + // being processed. See bug 1239983. + MOZ_DIAGNOSTIC_ASSERT(!mDemuxerInitRequest.Exists(), + "Previous AppendBuffer didn't complete"); + + for (auto& track : GetTracksList()) { + // 2. Unset the last decode timestamp on all track buffers. + // 3. Unset the last frame duration on all track buffers. + // 4. Unset the highest end timestamp on all track buffers. + // 5. Set the need random access point flag on all track buffers to true. + track->ResetAppendState(); + + // if we have been aborted, we may have pending frames that we are going + // to discard now. + track->mQueuedSamples.Clear(); + } + + // 7. Remove all bytes from the input buffer. + mPendingInputBuffer.reset(); + mInputBuffer.reset(); + if (mCurrentInputBuffer) { + mCurrentInputBuffer->EvictAll(); + // The demuxer will be recreated during the next run of SegmentParserLoop. + // As such we don't need to notify it that data has been removed. + mCurrentInputBuffer = new SourceBufferResource(); + } + + // We could be left with a demuxer in an unusable state. It needs to be + // recreated. Unless we have a pending changeType operation, we store in the + // InputBuffer an init segment which will be parsed during the next Segment + // Parser Loop and a new demuxer will be created and initialized. + // If we are in the middle of a changeType operation, then we do not have an + // init segment yet. The next appendBuffer operation will need to provide such + // init segment. + if (mFirstInitializationSegmentReceived && !mChangeTypeReceived) { + MOZ_ASSERT(mInitData && mInitData->Length(), + "we must have an init segment"); + // The aim here is really to destroy our current demuxer. + CreateDemuxerforMIMEType(); + // Recreate our input buffer. We can't directly assign the initData buffer + // to mInputBuffer as it will get modified in the Segment Parser Loop. + mInputBuffer = Some(MediaSpan::WithCopyOf(mInitData)); + RecreateParser(true); + } else { + RecreateParser(false); + } +} + +int64_t TrackBuffersManager::EvictionThreshold() const { + if (HasVideo()) { + return mVideoEvictionThreshold; + } + return mAudioEvictionThreshold; +} + +void TrackBuffersManager::DoEvictData(const TimeUnit& aPlaybackTime, + int64_t aSizeToEvict) { + mTaskQueueCapability->AssertOnCurrentThread(); + AUTO_PROFILER_LABEL("TrackBuffersManager::DoEvictData", MEDIA_PLAYBACK); + + mEvictionState = EvictionState::EVICTION_COMPLETED; + + // Video is what takes the most space, only evict there if we have video. + auto& track = HasVideo() ? mVideoTracks : mAudioTracks; + const auto& buffer = track.GetTrackBuffer(); + if (buffer.IsEmpty()) { + // Buffer has been emptied while the eviction was queued, nothing to do. + return; + } + if (track.mBufferedRanges.IsEmpty()) { + MSE_DEBUG( + "DoEvictData running with no buffered ranges. 0 duration data likely " + "present in our buffer(s). Evicting all data!"); + // We have no buffered ranges, but may still have data. This happens if the + // buffer is full of 0 duration data. Normal removal procedures don't clear + // 0 duration data, so blow away all our data. + RemoveAllCodedFrames(); + return; + } + // Remove any data we've already played, or before the next sample to be + // demuxed whichever is lowest. + TimeUnit lowerLimit = std::min(track.mNextSampleTime, aPlaybackTime); + uint32_t lastKeyFrameIndex = 0; + int64_t toEvict = aSizeToEvict; + int64_t partialEvict = 0; + for (uint32_t i = 0; i < buffer.Length(); i++) { + const auto& frame = buffer[i]; + if (frame->mKeyframe) { + lastKeyFrameIndex = i; + toEvict -= partialEvict; + if (toEvict < 0) { + break; + } + partialEvict = 0; + } + if (frame->GetEndTime() >= lowerLimit) { + break; + } + partialEvict += frame->ComputedSizeOfIncludingThis(); + } + + const int64_t finalSize = mSizeSourceBuffer - aSizeToEvict; + + if (lastKeyFrameIndex > 0) { + MSE_DEBUG("Step1. Evicting %" PRId64 " bytes prior currentTime", + aSizeToEvict - toEvict); + TimeUnit start = track.mBufferedRanges[0].mStart; + TimeUnit end = + buffer[lastKeyFrameIndex]->mTime - TimeUnit::FromMicroseconds(1); + if (end > start) { + CodedFrameRemoval(TimeInterval(start, end)); + } + } + + if (mSizeSourceBuffer <= finalSize) { + return; + } + + toEvict = mSizeSourceBuffer - finalSize; + + // See if we can evict data into the future. + // We do not evict data from the currently used buffered interval. + + TimeUnit currentPosition = std::max(aPlaybackTime, track.mNextSampleTime); + TimeIntervals futureBuffered( + TimeInterval(currentPosition, TimeUnit::FromInfinity())); + futureBuffered.Intersection(track.mBufferedRanges); + futureBuffered.SetFuzz(MediaSourceDemuxer::EOS_FUZZ / 2); + if (futureBuffered.Length() <= 1) { + // We have one continuous segment ahead of us: + // nothing further can be evicted. + return; + } + + // Don't evict before the end of the current segment + TimeUnit upperLimit = futureBuffered[0].mEnd; + uint32_t evictedFramesStartIndex = buffer.Length(); + for (int32_t i = buffer.Length() - 1; i >= 0; i--) { + const auto& frame = buffer[i]; + if (frame->mTime <= upperLimit || toEvict < 0) { + // We've reached a frame that shouldn't be evicted -> Evict after it -> + // i+1. Or the previous loop reached the eviction threshold -> Evict from + // it -> i+1. + evictedFramesStartIndex = i + 1; + break; + } + toEvict -= frame->ComputedSizeOfIncludingThis(); + } + if (evictedFramesStartIndex < buffer.Length()) { + MSE_DEBUG("Step2. Evicting %" PRId64 " bytes from trailing data", + mSizeSourceBuffer - finalSize - toEvict); + CodedFrameRemoval(TimeInterval(buffer[evictedFramesStartIndex]->mTime, + TimeUnit::FromInfinity())); + } +} + +RefPtr<TrackBuffersManager::RangeRemovalPromise> +TrackBuffersManager::CodedFrameRemovalWithPromise(TimeInterval aInterval) { + mTaskQueueCapability->AssertOnCurrentThread(); + + RefPtr<RangeRemovalTask> task = new RangeRemovalTask(aInterval); + RefPtr<RangeRemovalPromise> p = task->mPromise.Ensure(__func__); + QueueTask(task); + + return p; +} + +bool TrackBuffersManager::CodedFrameRemoval(TimeInterval aInterval) { + MOZ_ASSERT(OnTaskQueue()); + AUTO_PROFILER_LABEL("TrackBuffersManager::CodedFrameRemoval", MEDIA_PLAYBACK); + MSE_DEBUG("From %.2fs to %.2f", aInterval.mStart.ToSeconds(), + aInterval.mEnd.ToSeconds()); + +#if DEBUG + if (HasVideo()) { + MSE_DEBUG("before video ranges=%s", + DumpTimeRangesRaw(mVideoTracks.mBufferedRanges).get()); + } + if (HasAudio()) { + MSE_DEBUG("before audio ranges=%s", + DumpTimeRangesRaw(mAudioTracks.mBufferedRanges).get()); + } +#endif + + // 1. Let start be the starting presentation timestamp for the removal range. + TimeUnit start = aInterval.mStart; + // 2. Let end be the end presentation timestamp for the removal range. + TimeUnit end = aInterval.mEnd; + + bool dataRemoved = false; + + // 3. For each track buffer in this source buffer, run the following steps: + for (auto track : GetTracksList()) { + MSE_DEBUGV("Processing %s track", track->mInfo->mMimeType.get()); + // 1. Let remove end timestamp be the current value of duration + // See bug: https://www.w3.org/Bugs/Public/show_bug.cgi?id=28727 + // At worse we will remove all frames until the end, unless a key frame is + // found between the current interval's end and the trackbuffer's end. + TimeUnit removeEndTimestamp = track->mBufferedRanges.GetEnd(); + + if (start > removeEndTimestamp) { + // Nothing to remove. + continue; + } + + // 2. If this track buffer has a random access point timestamp that is + // greater than or equal to end, then update remove end timestamp to that + // random access point timestamp. + if (end < track->mBufferedRanges.GetEnd()) { + for (auto& frame : track->GetTrackBuffer()) { + if (frame->mKeyframe && frame->mTime >= end) { + removeEndTimestamp = frame->mTime; + break; + } + } + } + + // 3. Remove all media data, from this track buffer, that contain starting + // timestamps greater than or equal to start and less than the remove end + // timestamp. + // 4. Remove decoding dependencies of the coded frames removed in the + // previous step: Remove all coded frames between the coded frames removed + // in the previous step and the next random access point after those removed + // frames. + TimeIntervals removedInterval{TimeInterval(start, removeEndTimestamp)}; + RemoveFrames(removedInterval, *track, 0, RemovalMode::kRemoveFrame); + + // 5. If this object is in activeSourceBuffers, the current playback + // position is greater than or equal to start and less than the remove end + // timestamp, and HTMLMediaElement.readyState is greater than HAVE_METADATA, + // then set the HTMLMediaElement.readyState attribute to HAVE_METADATA and + // stall playback. This will be done by the MDSM during playback. + // TODO properly, so it works even if paused. + } + + UpdateBufferedRanges(); + + // Update our reported total size. + mSizeSourceBuffer = mVideoTracks.mSizeBuffer + mAudioTracks.mSizeBuffer; + + // 4. If buffer full flag equals true and this object is ready to accept more + // bytes, then set the buffer full flag to false. + if (mBufferFull && mSizeSourceBuffer < EvictionThreshold()) { + mBufferFull = false; + } + + return dataRemoved; +} + +void TrackBuffersManager::RemoveAllCodedFrames() { + // This is similar to RemoveCodedFrames, but will attempt to remove ALL + // the frames. This is not to spec, as explained below at step 3.1. Steps + // below coincide with Remove Coded Frames algorithm from the spec. + MSE_DEBUG("RemoveAllCodedFrames called."); + MOZ_ASSERT(OnTaskQueue()); + AUTO_PROFILER_LABEL("TrackBuffersManager::RemoveAllCodedFrames", + MEDIA_PLAYBACK); + + // 1. Let start be the starting presentation timestamp for the removal range. + TimeUnit start{}; + // 2. Let end be the end presentation timestamp for the removal range. + TimeUnit end = TimeUnit::FromMicroseconds(1); + // Find an end time such that our range will include every frame in every + // track. We do this by setting the end of our interval to the largest end + // time seen + 1 microsecond. + for (TrackData* track : GetTracksList()) { + for (auto& frame : track->GetTrackBuffer()) { + MOZ_ASSERT(frame->mTime >= start, + "Shouldn't have frame at negative time!"); + TimeUnit frameEnd = frame->mTime + frame->mDuration; + if (frameEnd > end) { + end = frameEnd + TimeUnit::FromMicroseconds(1); + } + } + } + + // 3. For each track buffer in this source buffer, run the following steps: + TimeIntervals removedInterval{TimeInterval(start, end)}; + for (TrackData* track : GetTracksList()) { + // 1. Let remove end timestamp be the current value of duration + // ^ It's off spec, but we ignore this in order to clear 0 duration frames. + // If we don't ignore this rule and our buffer is full of 0 duration frames + // at timestamp n, we get an eviction range of [0, n). When we get to step + // 3.3 below, the 0 duration frames will not be evicted because their + // timestamp is not less than remove end timestamp -- it will in fact be + // equal to remove end timestamp. + // + // 2. If this track buffer has a random access point timestamp that is + // greater than or equal to end, then update remove end timestamp to that + // random access point timestamp. + // ^ We've made sure end > any sample's timestamp, so can skip this. + // + // 3. Remove all media data, from this track buffer, that contain starting + // timestamps greater than or equal to start and less than the remove end + // timestamp. + // 4. Remove decoding dependencies of the coded frames removed in the + // previous step: Remove all coded frames between the coded frames removed + // in the previous step and the next random access point after those removed + // frames. + + // This should remove every frame in the track because removedInterval was + // constructed such that every frame in any track falls into that interval. + RemoveFrames(removedInterval, *track, 0, RemovalMode::kRemoveFrame); + + // 5. If this object is in activeSourceBuffers, the current playback + // position is greater than or equal to start and less than the remove end + // timestamp, and HTMLMediaElement.readyState is greater than HAVE_METADATA, + // then set the HTMLMediaElement.readyState attribute to HAVE_METADATA and + // stall playback. This will be done by the MDSM during playback. + // TODO properly, so it works even if paused. + } + + UpdateBufferedRanges(); +#ifdef DEBUG + { + MutexAutoLock lock(mMutex); + MOZ_ASSERT( + mAudioBufferedRanges.IsEmpty(), + "Should have no buffered video ranges after evicting everything."); + MOZ_ASSERT( + mVideoBufferedRanges.IsEmpty(), + "Should have no buffered video ranges after evicting everything."); + } +#endif + mSizeSourceBuffer = mVideoTracks.mSizeBuffer + mAudioTracks.mSizeBuffer; + MOZ_ASSERT(mSizeSourceBuffer == 0, + "Buffer should be empty after evicting everything!"); + if (mBufferFull && mSizeSourceBuffer < EvictionThreshold()) { + mBufferFull = false; + } +} + +void TrackBuffersManager::UpdateBufferedRanges() { + MutexAutoLock mut(mMutex); + + mVideoBufferedRanges = mVideoTracks.mSanitizedBufferedRanges; + mAudioBufferedRanges = mAudioTracks.mSanitizedBufferedRanges; + +#if DEBUG + if (HasVideo()) { + MSE_DEBUG("after video ranges=%s", + DumpTimeRangesRaw(mVideoTracks.mBufferedRanges).get()); + } + if (HasAudio()) { + MSE_DEBUG("after audio ranges=%s", + DumpTimeRangesRaw(mAudioTracks.mBufferedRanges).get()); + } +#endif +} + +void TrackBuffersManager::SegmentParserLoop() { + MOZ_ASSERT(OnTaskQueue()); + AUTO_PROFILER_LABEL("TrackBuffersManager::SegmentParserLoop", MEDIA_PLAYBACK); + + while (true) { + // 1. If the input buffer is empty, then jump to the need more data step + // below. + if (!mInputBuffer || mInputBuffer->IsEmpty()) { + NeedMoreData(); + return; + } + // 2. If the input buffer contains bytes that violate the SourceBuffer + // byte stream format specification, then run the append error algorithm + // with the decode error parameter set to true and abort this algorithm. + // TODO + + // 3. Remove any bytes that the byte stream format specifications say must + // be ignored from the start of the input buffer. We do not remove bytes + // from our input buffer. Instead we enforce that our ContainerParser is + // able to skip over all data that is supposed to be ignored. + + // 4. If the append state equals WAITING_FOR_SEGMENT, then run the following + // steps: + if (mSourceBufferAttributes->GetAppendState() == + AppendState::WAITING_FOR_SEGMENT) { + MediaResult haveInitSegment = + mParser->IsInitSegmentPresent(*mInputBuffer); + if (NS_SUCCEEDED(haveInitSegment)) { + SetAppendState(AppendState::PARSING_INIT_SEGMENT); + if (mFirstInitializationSegmentReceived && !mChangeTypeReceived) { + // This is a new initialization segment. Obsolete the old one. + RecreateParser(false); + } + continue; + } + MediaResult haveMediaSegment = + mParser->IsMediaSegmentPresent(*mInputBuffer); + if (NS_SUCCEEDED(haveMediaSegment)) { + SetAppendState(AppendState::PARSING_MEDIA_SEGMENT); + mNewMediaSegmentStarted = true; + continue; + } + // We have neither an init segment nor a media segment. + // Check if it was invalid data. + if (haveInitSegment != NS_ERROR_NOT_AVAILABLE) { + MSE_DEBUG("Found invalid data."); + RejectAppend(haveInitSegment, __func__); + return; + } + if (haveMediaSegment != NS_ERROR_NOT_AVAILABLE) { + MSE_DEBUG("Found invalid data."); + RejectAppend(haveMediaSegment, __func__); + return; + } + MSE_DEBUG("Found incomplete data."); + NeedMoreData(); + return; + } + + MOZ_ASSERT(mSourceBufferAttributes->GetAppendState() == + AppendState::PARSING_INIT_SEGMENT || + mSourceBufferAttributes->GetAppendState() == + AppendState::PARSING_MEDIA_SEGMENT); + + TimeUnit start, end; + MediaResult newData = NS_ERROR_NOT_AVAILABLE; + + if (mSourceBufferAttributes->GetAppendState() == + AppendState::PARSING_INIT_SEGMENT || + (mSourceBufferAttributes->GetAppendState() == + AppendState::PARSING_MEDIA_SEGMENT && + mFirstInitializationSegmentReceived && !mChangeTypeReceived)) { + newData = mParser->ParseStartAndEndTimestamps(*mInputBuffer, start, end); + if (NS_FAILED(newData) && newData.Code() != NS_ERROR_NOT_AVAILABLE) { + RejectAppend(newData, __func__); + return; + } + mProcessedInput += mInputBuffer->Length(); + } + + // 5. If the append state equals PARSING_INIT_SEGMENT, then run the + // following steps: + if (mSourceBufferAttributes->GetAppendState() == + AppendState::PARSING_INIT_SEGMENT) { + if (mParser->InitSegmentRange().IsEmpty()) { + mInputBuffer.reset(); + NeedMoreData(); + return; + } + InitializationSegmentReceived(); + return; + } + if (mSourceBufferAttributes->GetAppendState() == + AppendState::PARSING_MEDIA_SEGMENT) { + // 1. If the first initialization segment received flag is false, then run + // the append error algorithm with the decode error parameter set to + // true and abort this algorithm. + // Or we are in the process of changeType, in which case we must first + // get an init segment before getting a media segment. + if (!mFirstInitializationSegmentReceived || mChangeTypeReceived) { + RejectAppend(NS_ERROR_FAILURE, __func__); + return; + } + + // We can't feed some demuxers (WebMDemuxer) with data that do not have + // monotonizally increasing timestamps. So we check if we have a + // discontinuity from the previous segment parsed. + // If so, recreate a new demuxer to ensure that the demuxer is only fed + // monotonically increasing data. + if (mNewMediaSegmentStarted) { + if (NS_SUCCEEDED(newData) && mLastParsedEndTime.isSome() && + start < mLastParsedEndTime.ref()) { + MSE_DEBUG("Re-creating demuxer"); + ResetDemuxingState(); + return; + } + if (NS_SUCCEEDED(newData) || !mParser->MediaSegmentRange().IsEmpty()) { + if (mPendingInputBuffer) { + // We now have a complete media segment header. We can resume + // parsing the data. + AppendDataToCurrentInputBuffer(*mPendingInputBuffer); + mPendingInputBuffer.reset(); + } + mNewMediaSegmentStarted = false; + } else { + // We don't have any data to demux yet, stash aside the data. + // This also handles the case: + // 2. If the input buffer does not contain a complete media segment + // header yet, then jump to the need more data step below. + if (!mPendingInputBuffer) { + mPendingInputBuffer = Some(MediaSpan(*mInputBuffer)); + } else { + // Note we reset mInputBuffer below, so this won't end up appending + // the contents of mInputBuffer to itself. + mPendingInputBuffer->Append(*mInputBuffer); + } + + mInputBuffer.reset(); + NeedMoreData(); + return; + } + } + + // 3. If the input buffer contains one or more complete coded frames, then + // run the coded frame processing algorithm. + RefPtr<TrackBuffersManager> self = this; + CodedFrameProcessing() + ->Then( + TaskQueueFromTaskQueue(), __func__, + [self](bool aNeedMoreData) { + self->mTaskQueueCapability->AssertOnCurrentThread(); + self->mProcessingRequest.Complete(); + if (aNeedMoreData) { + self->NeedMoreData(); + } else { + self->ScheduleSegmentParserLoop(); + } + }, + [self](const MediaResult& aRejectValue) { + self->mTaskQueueCapability->AssertOnCurrentThread(); + self->mProcessingRequest.Complete(); + self->RejectAppend(aRejectValue, __func__); + }) + ->Track(mProcessingRequest); + return; + } + } +} + +void TrackBuffersManager::NeedMoreData() { + MSE_DEBUG(""); + MOZ_DIAGNOSTIC_ASSERT(mCurrentTask && + mCurrentTask->GetType() == + SourceBufferTask::Type::AppendBuffer); + MOZ_DIAGNOSTIC_ASSERT(mSourceBufferAttributes); + + mCurrentTask->As<AppendBufferTask>()->mPromise.Resolve( + SourceBufferTask::AppendBufferResult(mActiveTrack, + *mSourceBufferAttributes), + __func__); + mSourceBufferAttributes = nullptr; + mCurrentTask = nullptr; + ProcessTasks(); +} + +void TrackBuffersManager::RejectAppend(const MediaResult& aRejectValue, + const char* aName) { + MSE_DEBUG("rv=%" PRIu32, static_cast<uint32_t>(aRejectValue.Code())); + MOZ_DIAGNOSTIC_ASSERT(mCurrentTask && + mCurrentTask->GetType() == + SourceBufferTask::Type::AppendBuffer); + + mCurrentTask->As<AppendBufferTask>()->mPromise.Reject(aRejectValue, __func__); + mSourceBufferAttributes = nullptr; + mCurrentTask = nullptr; + ProcessTasks(); +} + +void TrackBuffersManager::ScheduleSegmentParserLoop() { + MOZ_ASSERT(OnTaskQueue()); + TaskQueueFromTaskQueue()->Dispatch( + NewRunnableMethod("TrackBuffersManager::SegmentParserLoop", this, + &TrackBuffersManager::SegmentParserLoop)); +} + +void TrackBuffersManager::ShutdownDemuxers() { + if (mVideoTracks.mDemuxer) { + mVideoTracks.mDemuxer->BreakCycles(); + mVideoTracks.mDemuxer = nullptr; + } + if (mAudioTracks.mDemuxer) { + mAudioTracks.mDemuxer->BreakCycles(); + mAudioTracks.mDemuxer = nullptr; + } + // We shouldn't change mInputDemuxer while a demuxer init/reset request is + // being processed. See bug 1239983. + MOZ_DIAGNOSTIC_ASSERT(!mDemuxerInitRequest.Exists()); + mInputDemuxer = nullptr; + mLastParsedEndTime.reset(); +} + +void TrackBuffersManager::CreateDemuxerforMIMEType() { + mTaskQueueCapability->AssertOnCurrentThread(); + MSE_DEBUG("mType.OriginalString=%s", mType.OriginalString().get()); + ShutdownDemuxers(); + + if (mType.Type() == MEDIAMIMETYPE(VIDEO_WEBM) || + mType.Type() == MEDIAMIMETYPE(AUDIO_WEBM)) { + mInputDemuxer = + new WebMDemuxer(mCurrentInputBuffer, true /* IsMediaSource*/); + DDLINKCHILD("demuxer", mInputDemuxer.get()); + return; + } + +#ifdef MOZ_FMP4 + if (mType.Type() == MEDIAMIMETYPE(VIDEO_MP4) || + mType.Type() == MEDIAMIMETYPE(AUDIO_MP4)) { + mInputDemuxer = new MP4Demuxer(mCurrentInputBuffer); + DDLINKCHILD("demuxer", mInputDemuxer.get()); + return; + } +#endif + NS_WARNING("Not supported (yet)"); +} + +// We reset the demuxer by creating a new one and initializing it. +void TrackBuffersManager::ResetDemuxingState() { + MOZ_ASSERT(OnTaskQueue()); + MOZ_ASSERT(mParser && mParser->HasInitData()); + AUTO_PROFILER_LABEL("TrackBuffersManager::ResetDemuxingState", + MEDIA_PLAYBACK); + RecreateParser(true); + mCurrentInputBuffer = new SourceBufferResource(); + // The demuxer isn't initialized yet ; we don't want to notify it + // that data has been appended yet ; so we simply append the init segment + // to the resource. + mCurrentInputBuffer->AppendData(mParser->InitData()); + CreateDemuxerforMIMEType(); + if (!mInputDemuxer) { + RejectAppend(NS_ERROR_FAILURE, __func__); + return; + } + mInputDemuxer->Init() + ->Then(TaskQueueFromTaskQueue(), __func__, this, + &TrackBuffersManager::OnDemuxerResetDone, + &TrackBuffersManager::OnDemuxerInitFailed) + ->Track(mDemuxerInitRequest); +} + +void TrackBuffersManager::OnDemuxerResetDone(const MediaResult& aResult) { + MOZ_ASSERT(OnTaskQueue()); + mDemuxerInitRequest.Complete(); + + if (NS_FAILED(aResult) && StaticPrefs::media_playback_warnings_as_errors()) { + RejectAppend(aResult, __func__); + return; + } + + // mInputDemuxer shouldn't have been destroyed while a demuxer init/reset + // request was being processed. See bug 1239983. + MOZ_DIAGNOSTIC_ASSERT(mInputDemuxer); + + if (aResult != NS_OK && mParentDecoder) { + RefPtr<TrackBuffersManager> self = this; + mAbstractMainThread->Dispatch(NS_NewRunnableFunction( + "TrackBuffersManager::OnDemuxerResetDone", [self, aResult]() { + if (self->mParentDecoder && self->mParentDecoder->GetOwner()) { + self->mParentDecoder->GetOwner()->DecodeWarning(aResult); + } + })); + } + + // Recreate track demuxers. + uint32_t numVideos = mInputDemuxer->GetNumberTracks(TrackInfo::kVideoTrack); + if (numVideos) { + // We currently only handle the first video track. + mVideoTracks.mDemuxer = + mInputDemuxer->GetTrackDemuxer(TrackInfo::kVideoTrack, 0); + MOZ_ASSERT(mVideoTracks.mDemuxer); + DDLINKCHILD("video demuxer", mVideoTracks.mDemuxer.get()); + } + + uint32_t numAudios = mInputDemuxer->GetNumberTracks(TrackInfo::kAudioTrack); + if (numAudios) { + // We currently only handle the first audio track. + mAudioTracks.mDemuxer = + mInputDemuxer->GetTrackDemuxer(TrackInfo::kAudioTrack, 0); + MOZ_ASSERT(mAudioTracks.mDemuxer); + DDLINKCHILD("audio demuxer", mAudioTracks.mDemuxer.get()); + } + + if (mPendingInputBuffer) { + // We had a partial media segment header stashed aside. + // Reparse its content so we can continue parsing the current input buffer. + TimeUnit start, end; + mParser->ParseStartAndEndTimestamps(*mPendingInputBuffer, start, end); + mProcessedInput += mPendingInputBuffer->Length(); + } + + SegmentParserLoop(); +} + +void TrackBuffersManager::AppendDataToCurrentInputBuffer( + const MediaSpan& aData) { + MOZ_ASSERT(mCurrentInputBuffer); + mCurrentInputBuffer->AppendData(aData); + mInputDemuxer->NotifyDataArrived(); +} + +void TrackBuffersManager::InitializationSegmentReceived() { + MOZ_ASSERT(OnTaskQueue()); + MOZ_ASSERT(mParser->HasCompleteInitData()); + AUTO_PROFILER_LABEL("TrackBuffersManager::InitializationSegmentReceived", + MEDIA_PLAYBACK); + + int64_t endInit = mParser->InitSegmentRange().mEnd; + if (mInputBuffer->Length() > mProcessedInput || + int64_t(mProcessedInput - mInputBuffer->Length()) > endInit) { + // Something is not quite right with the data appended. Refuse it. + RejectAppend(MediaResult(NS_ERROR_FAILURE, + "Invalid state following initialization segment"), + __func__); + return; + } + + mCurrentInputBuffer = new SourceBufferResource(); + // The demuxer isn't initialized yet ; we don't want to notify it + // that data has been appended yet ; so we simply append the init segment + // to the resource. + mCurrentInputBuffer->AppendData(mParser->InitData()); + uint32_t length = endInit - (mProcessedInput - mInputBuffer->Length()); + MOZ_RELEASE_ASSERT(length <= mInputBuffer->Length()); + mInputBuffer->RemoveFront(length); + CreateDemuxerforMIMEType(); + if (!mInputDemuxer) { + NS_WARNING("TODO type not supported"); + RejectAppend(NS_ERROR_DOM_NOT_SUPPORTED_ERR, __func__); + return; + } + mInputDemuxer->Init() + ->Then(TaskQueueFromTaskQueue(), __func__, this, + &TrackBuffersManager::OnDemuxerInitDone, + &TrackBuffersManager::OnDemuxerInitFailed) + ->Track(mDemuxerInitRequest); +} + +bool TrackBuffersManager::IsRepeatInitData( + const MediaInfo& aNewMediaInfo) const { + MOZ_ASSERT(OnTaskQueue()); + if (!mInitData) { + // There is no previous init data, so this cannot be a repeat. + return false; + } + + if (mChangeTypeReceived) { + // If we're received change type we want to reprocess init data. + return false; + } + + MOZ_DIAGNOSTIC_ASSERT(mInitData, "Init data should be non-null"); + if (*mInitData == *mParser->InitData()) { + // We have previous init data, and it's the same binary data as we've just + // parsed. + return true; + } + + // At this point the binary data doesn't match, but it's possible to have the + // different binary representations for the same logical init data. These + // checks can be revised as we encounter such cases in the wild. + + bool audioInfoIsRepeat = false; + if (aNewMediaInfo.HasAudio()) { + if (!mAudioTracks.mLastInfo) { + // There is no old audio info, so this can't be a repeat. + return false; + } + audioInfoIsRepeat = + *mAudioTracks.mLastInfo->GetAsAudioInfo() == aNewMediaInfo.mAudio; + if (!aNewMediaInfo.HasVideo()) { + // Only have audio. + return audioInfoIsRepeat; + } + } + + bool videoInfoIsRepeat = false; + if (aNewMediaInfo.HasVideo()) { + if (!mVideoTracks.mLastInfo) { + // There is no old video info, so this can't be a repeat. + return false; + } + videoInfoIsRepeat = + *mVideoTracks.mLastInfo->GetAsVideoInfo() == aNewMediaInfo.mVideo; + if (!aNewMediaInfo.HasAudio()) { + // Only have video. + return videoInfoIsRepeat; + } + } + + if (audioInfoIsRepeat && videoInfoIsRepeat) { + MOZ_DIAGNOSTIC_ASSERT( + aNewMediaInfo.HasVideo() && aNewMediaInfo.HasAudio(), + "This should only be reachable if audio and video are present"); + // Video + audio are present and both have the same init data. + return true; + } + + return false; +} + +void TrackBuffersManager::OnDemuxerInitDone(const MediaResult& aResult) { + mTaskQueueCapability->AssertOnCurrentThread(); + MOZ_DIAGNOSTIC_ASSERT(mInputDemuxer, "mInputDemuxer has been destroyed"); + AUTO_PROFILER_LABEL("TrackBuffersManager::OnDemuxerInitDone", MEDIA_PLAYBACK); + + mDemuxerInitRequest.Complete(); + + if (NS_FAILED(aResult) && StaticPrefs::media_playback_warnings_as_errors()) { + RejectAppend(aResult, __func__); + return; + } + + MediaInfo info; + + uint32_t numVideos = mInputDemuxer->GetNumberTracks(TrackInfo::kVideoTrack); + if (numVideos) { + // We currently only handle the first video track. + mVideoTracks.mDemuxer = + mInputDemuxer->GetTrackDemuxer(TrackInfo::kVideoTrack, 0); + MOZ_ASSERT(mVideoTracks.mDemuxer); + DDLINKCHILD("video demuxer", mVideoTracks.mDemuxer.get()); + info.mVideo = *mVideoTracks.mDemuxer->GetInfo()->GetAsVideoInfo(); + info.mVideo.mTrackId = 2; + } + + uint32_t numAudios = mInputDemuxer->GetNumberTracks(TrackInfo::kAudioTrack); + if (numAudios) { + // We currently only handle the first audio track. + mAudioTracks.mDemuxer = + mInputDemuxer->GetTrackDemuxer(TrackInfo::kAudioTrack, 0); + MOZ_ASSERT(mAudioTracks.mDemuxer); + DDLINKCHILD("audio demuxer", mAudioTracks.mDemuxer.get()); + info.mAudio = *mAudioTracks.mDemuxer->GetInfo()->GetAsAudioInfo(); + info.mAudio.mTrackId = 1; + } + + TimeUnit videoDuration = numVideos ? info.mVideo.mDuration : TimeUnit::Zero(); + TimeUnit audioDuration = numAudios ? info.mAudio.mDuration : TimeUnit::Zero(); + + TimeUnit duration = std::max(videoDuration, audioDuration); + // 1. Update the duration attribute if it currently equals NaN. + // Those steps are performed by the MediaSourceDecoder::SetInitialDuration + mAbstractMainThread->Dispatch(NewRunnableMethod<TimeUnit>( + "MediaSourceDecoder::SetInitialDuration", mParentDecoder.get(), + &MediaSourceDecoder::SetInitialDuration, + !duration.IsZero() ? duration : TimeUnit::FromInfinity())); + + // 2. If the initialization segment has no audio, video, or text tracks, then + // run the append error algorithm with the decode error parameter set to true + // and abort these steps. + if (!numVideos && !numAudios) { + RejectAppend(NS_ERROR_FAILURE, __func__); + return; + } + + // 3. If the first initialization segment received flag is true, then run the + // following steps: + if (mFirstInitializationSegmentReceived) { + if (numVideos != mVideoTracks.mNumTracks || + numAudios != mAudioTracks.mNumTracks) { + RejectAppend(NS_ERROR_FAILURE, __func__); + return; + } + // 1. If more than one track for a single type are present (ie 2 audio + // tracks), then the Track IDs match the ones in the first initialization + // segment. + // TODO + // 2. Add the appropriate track descriptions from this initialization + // segment to each of the track buffers. + // TODO + // 3. Set the need random access point flag on all track buffers to true. + mVideoTracks.mNeedRandomAccessPoint = true; + mAudioTracks.mNeedRandomAccessPoint = true; + } + + // Check if we've received the same init data again. Some streams will + // resend the same data. In these cases we don't need to change the stream + // id as it's the same stream. Doing so would recreate decoders, possibly + // leading to gaps in audio and/or video (see bug 1450952). + bool isRepeatInitData = IsRepeatInitData(info); + + MOZ_ASSERT(mFirstInitializationSegmentReceived || !isRepeatInitData, + "Should never detect repeat init data for first segment!"); + + // If we have new init data we configure and set track info as needed. If we + // have repeat init data we carry forward our existing track info. + if (!isRepeatInitData) { + // Increase our stream id. + uint32_t streamID = sStreamSourceID++; + + // 4. Let active track flag equal false. + bool activeTrack = false; + + // 5. If the first initialization segment received flag is false, then run + // the following steps: + if (!mFirstInitializationSegmentReceived) { + MSE_DEBUG("Get first init data"); + mAudioTracks.mNumTracks = numAudios; + // TODO: + // 1. If the initialization segment contains tracks with codecs the user + // agent does not support, then run the append error algorithm with the + // decode error parameter set to true and abort these steps. + + // 2. For each audio track in the initialization segment, run following + // steps: for (uint32_t i = 0; i < numAudios; i++) { + if (numAudios) { + // 1. Let audio byte stream track ID be the Track ID for the current + // track being processed. + // 2. Let audio language be a BCP 47 language tag for the language + // specified in the initialization segment for this track or an empty + // string if no language info is present. + // 3. If audio language equals an empty string or the 'und' BCP 47 + // value, then run the default track language algorithm with + // byteStreamTrackID set to audio byte stream track ID and type set to + // "audio" and assign the value returned by the algorithm to audio + // language. + // 4. Let audio label be a label specified in the initialization segment + // for this track or an empty string if no label info is present. + // 5. If audio label equals an empty string, then run the default track + // label algorithm with byteStreamTrackID set to audio byte stream track + // ID and type set to "audio" and assign the value returned by the + // algorithm to audio label. + // 6. Let audio kinds be an array of kind strings specified in the + // initialization segment for this track or an empty array if no kind + // information is provided. + // 7. If audio kinds equals an empty array, then run the default track + // kinds algorithm with byteStreamTrackID set to audio byte stream track + // ID and type set to "audio" and assign the value returned by the + // algorithm to audio kinds. + // 8. For each value in audio kinds, run the following steps: + // 1. Let current audio kind equal the value from audio kinds for this + // iteration of the loop. + // 2. Let new audio track be a new AudioTrack object. + // 3. Generate a unique ID and assign it to the id property on new + // audio track. + // 4. Assign audio language to the language property on new audio + // track. + // 5. Assign audio label to the label property on new audio track. + // 6. Assign current audio kind to the kind property on new audio + // track. + // 7. If audioTracks.length equals 0, then run the following steps: + // 1. Set the enabled property on new audio track to true. + // 2. Set active track flag to true. + activeTrack = true; + // 8. Add new audio track to the audioTracks attribute on this + // SourceBuffer object. + // 9. Queue a task to fire a trusted event named addtrack, that does + // not bubble and is not cancelable, and that uses the TrackEvent + // interface, at the AudioTrackList object referenced by the + // audioTracks attribute on this SourceBuffer object. + // 10. Add new audio track to the audioTracks attribute on the + // HTMLMediaElement. + // 11. Queue a task to fire a trusted event named addtrack, that does + // not bubble and is not cancelable, and that uses the TrackEvent + // interface, at the AudioTrackList object referenced by the + // audioTracks attribute on the HTMLMediaElement. + mAudioTracks.mBuffers.AppendElement(TrackBuffer()); + // 10. Add the track description for this track to the track buffer. + mAudioTracks.mInfo = new TrackInfoSharedPtr(info.mAudio, streamID); + mAudioTracks.mLastInfo = mAudioTracks.mInfo; + } + + mVideoTracks.mNumTracks = numVideos; + // 3. For each video track in the initialization segment, run following + // steps: for (uint32_t i = 0; i < numVideos; i++) { + if (numVideos) { + // 1. Let video byte stream track ID be the Track ID for the current + // track being processed. + // 2. Let video language be a BCP 47 language tag for the language + // specified in the initialization segment for this track or an empty + // string if no language info is present. + // 3. If video language equals an empty string or the 'und' BCP 47 + // value, then run the default track language algorithm with + // byteStreamTrackID set to video byte stream track ID and type set to + // "video" and assign the value returned by the algorithm to video + // language. + // 4. Let video label be a label specified in the initialization segment + // for this track or an empty string if no label info is present. + // 5. If video label equals an empty string, then run the default track + // label algorithm with byteStreamTrackID set to video byte stream track + // ID and type set to "video" and assign the value returned by the + // algorithm to video label. + // 6. Let video kinds be an array of kind strings specified in the + // initialization segment for this track or an empty array if no kind + // information is provided. + // 7. If video kinds equals an empty array, then run the default track + // kinds algorithm with byteStreamTrackID set to video byte stream track + // ID and type set to "video" and assign the value returned by the + // algorithm to video kinds. + // 8. For each value in video kinds, run the following steps: + // 1. Let current video kind equal the value from video kinds for this + // iteration of the loop. + // 2. Let new video track be a new VideoTrack object. + // 3. Generate a unique ID and assign it to the id property on new + // video track. + // 4. Assign video language to the language property on new video + // track. + // 5. Assign video label to the label property on new video track. + // 6. Assign current video kind to the kind property on new video + // track. + // 7. If videoTracks.length equals 0, then run the following steps: + // 1. Set the selected property on new video track to true. + // 2. Set active track flag to true. + activeTrack = true; + // 8. Add new video track to the videoTracks attribute on this + // SourceBuffer object. + // 9. Queue a task to fire a trusted event named addtrack, that does + // not bubble and is not cancelable, and that uses the TrackEvent + // interface, at the VideoTrackList object referenced by the + // videoTracks attribute on this SourceBuffer object. + // 10. Add new video track to the videoTracks attribute on the + // HTMLMediaElement. + // 11. Queue a task to fire a trusted event named addtrack, that does + // not bubble and is not cancelable, and that uses the TrackEvent + // interface, at the VideoTrackList object referenced by the + // videoTracks attribute on the HTMLMediaElement. + mVideoTracks.mBuffers.AppendElement(TrackBuffer()); + // 10. Add the track description for this track to the track buffer. + mVideoTracks.mInfo = new TrackInfoSharedPtr(info.mVideo, streamID); + mVideoTracks.mLastInfo = mVideoTracks.mInfo; + } + // 4. For each text track in the initialization segment, run following + // steps: + // 5. If active track flag equals true, then run the following steps: + // This is handled by SourceBuffer once the promise is resolved. + if (activeTrack) { + mActiveTrack = true; + } + + // 6. Set first initialization segment received flag to true. + mFirstInitializationSegmentReceived = true; + } else { + MSE_DEBUG("Get new init data"); + mAudioTracks.mLastInfo = new TrackInfoSharedPtr(info.mAudio, streamID); + mVideoTracks.mLastInfo = new TrackInfoSharedPtr(info.mVideo, streamID); + } + + UniquePtr<EncryptionInfo> crypto = mInputDemuxer->GetCrypto(); + if (crypto && crypto->IsEncrypted()) { + // Try and dispatch 'encrypted'. Won't go if ready state still + // HAVE_NOTHING. + for (uint32_t i = 0; i < crypto->mInitDatas.Length(); i++) { + nsCOMPtr<nsIRunnable> r = new DispatchKeyNeededEvent( + mParentDecoder, crypto->mInitDatas[i].mInitData, + crypto->mInitDatas[i].mType); + mAbstractMainThread->Dispatch(r.forget()); + } + info.mCrypto = *crypto; + // We clear our crypto init data array, so the MediaFormatReader will + // not emit an encrypted event for the same init data again. + info.mCrypto.mInitDatas.Clear(); + } + + { + MutexAutoLock mut(mMutex); + mInfo = info; + } + } + // We now have a valid init data ; we can store it for later use. + mInitData = mParser->InitData(); + + // We have now completed the changeType operation. + mChangeTypeReceived = false; + + // 3. Remove the initialization segment bytes from the beginning of the input + // buffer. This step has already been done in InitializationSegmentReceived + // when we transferred the content into mCurrentInputBuffer. + mCurrentInputBuffer->EvictAll(); + mInputDemuxer->NotifyDataRemoved(); + RecreateParser(true); + + // 4. Set append state to WAITING_FOR_SEGMENT. + SetAppendState(AppendState::WAITING_FOR_SEGMENT); + // 5. Jump to the loop top step above. + ScheduleSegmentParserLoop(); + + if (aResult != NS_OK && mParentDecoder) { + RefPtr<TrackBuffersManager> self = this; + mAbstractMainThread->Dispatch(NS_NewRunnableFunction( + "TrackBuffersManager::OnDemuxerInitDone", [self, aResult]() { + if (self->mParentDecoder && self->mParentDecoder->GetOwner()) { + self->mParentDecoder->GetOwner()->DecodeWarning(aResult); + } + })); + } +} + +void TrackBuffersManager::OnDemuxerInitFailed(const MediaResult& aError) { + mTaskQueueCapability->AssertOnCurrentThread(); + MSE_DEBUG(""); + MOZ_ASSERT(aError != NS_ERROR_DOM_MEDIA_WAITING_FOR_DATA); + mDemuxerInitRequest.Complete(); + + RejectAppend(aError, __func__); +} + +RefPtr<TrackBuffersManager::CodedFrameProcessingPromise> +TrackBuffersManager::CodedFrameProcessing() { + MOZ_ASSERT(OnTaskQueue()); + MOZ_ASSERT(mProcessingPromise.IsEmpty()); + AUTO_PROFILER_LABEL("TrackBuffersManager::CodedFrameProcessing", + MEDIA_PLAYBACK); + + MediaByteRange mediaRange = mParser->MediaSegmentRange(); + if (mediaRange.IsEmpty()) { + AppendDataToCurrentInputBuffer(*mInputBuffer); + mInputBuffer.reset(); + } else { + MOZ_ASSERT(mProcessedInput >= mInputBuffer->Length()); + if (int64_t(mProcessedInput - mInputBuffer->Length()) > mediaRange.mEnd) { + // Something is not quite right with the data appended. Refuse it. + // This would typically happen if the previous media segment was partial + // yet a new complete media segment was added. + return CodedFrameProcessingPromise::CreateAndReject(NS_ERROR_FAILURE, + __func__); + } + // The mediaRange is offset by the init segment position previously added. + uint32_t length = + mediaRange.mEnd - (mProcessedInput - mInputBuffer->Length()); + if (!length) { + // We've completed our earlier media segment and no new data is to be + // processed. This happens with some containers that can't detect that a + // media segment is ending until a new one starts. + RefPtr<CodedFrameProcessingPromise> p = + mProcessingPromise.Ensure(__func__); + CompleteCodedFrameProcessing(); + return p; + } + AppendDataToCurrentInputBuffer(mInputBuffer->To(length)); + mInputBuffer->RemoveFront(length); + } + + RefPtr<CodedFrameProcessingPromise> p = mProcessingPromise.Ensure(__func__); + + DoDemuxVideo(); + + return p; +} + +void TrackBuffersManager::OnDemuxFailed(TrackType aTrack, + const MediaResult& aError) { + MOZ_ASSERT(OnTaskQueue()); + MSE_DEBUG("Failed to demux %s, failure:%s", + aTrack == TrackType::kVideoTrack ? "video" : "audio", + aError.ErrorName().get()); + switch (aError.Code()) { + case NS_ERROR_DOM_MEDIA_END_OF_STREAM: + case NS_ERROR_DOM_MEDIA_WAITING_FOR_DATA: + if (aTrack == TrackType::kVideoTrack) { + DoDemuxAudio(); + } else { + CompleteCodedFrameProcessing(); + } + break; + default: + RejectProcessing(aError, __func__); + break; + } +} + +void TrackBuffersManager::DoDemuxVideo() { + MOZ_ASSERT(OnTaskQueue()); + if (!HasVideo()) { + DoDemuxAudio(); + return; + } + mVideoTracks.mDemuxer->GetSamples(-1) + ->Then(TaskQueueFromTaskQueue(), __func__, this, + &TrackBuffersManager::OnVideoDemuxCompleted, + &TrackBuffersManager::OnVideoDemuxFailed) + ->Track(mVideoTracks.mDemuxRequest); +} + +void TrackBuffersManager::MaybeDispatchEncryptedEvent( + const nsTArray<RefPtr<MediaRawData>>& aSamples) { + // Try and dispatch 'encrypted'. Won't go if ready state still HAVE_NOTHING. + for (const RefPtr<MediaRawData>& sample : aSamples) { + for (const nsTArray<uint8_t>& initData : sample->mCrypto.mInitDatas) { + nsCOMPtr<nsIRunnable> r = new DispatchKeyNeededEvent( + mParentDecoder, initData, sample->mCrypto.mInitDataType); + mAbstractMainThread->Dispatch(r.forget()); + } + } +} + +void TrackBuffersManager::OnVideoDemuxCompleted( + RefPtr<MediaTrackDemuxer::SamplesHolder> aSamples) { + mTaskQueueCapability->AssertOnCurrentThread(); + MSE_DEBUG("%zu video samples demuxed", aSamples->GetSamples().Length()); + mVideoTracks.mDemuxRequest.Complete(); + mVideoTracks.mQueuedSamples.AppendElements(aSamples->GetSamples()); + + MaybeDispatchEncryptedEvent(aSamples->GetSamples()); + DoDemuxAudio(); +} + +void TrackBuffersManager::DoDemuxAudio() { + MOZ_ASSERT(OnTaskQueue()); + if (!HasAudio()) { + CompleteCodedFrameProcessing(); + return; + } + mAudioTracks.mDemuxer->GetSamples(-1) + ->Then(TaskQueueFromTaskQueue(), __func__, this, + &TrackBuffersManager::OnAudioDemuxCompleted, + &TrackBuffersManager::OnAudioDemuxFailed) + ->Track(mAudioTracks.mDemuxRequest); +} + +void TrackBuffersManager::OnAudioDemuxCompleted( + RefPtr<MediaTrackDemuxer::SamplesHolder> aSamples) { + mTaskQueueCapability->AssertOnCurrentThread(); + MSE_DEBUG("%zu audio samples demuxed", aSamples->GetSamples().Length()); + // When using MSE, it's possible for each fragments to have their own + // duration, with a duration that is incorrectly rounded. Ignore the trimming + // information set by the demuxer to ensure a continous playback. + for (const auto& sample : aSamples->GetSamples()) { + sample->mOriginalPresentationWindow = Nothing(); + } + mAudioTracks.mDemuxRequest.Complete(); + mAudioTracks.mQueuedSamples.AppendElements(aSamples->GetSamples()); + CompleteCodedFrameProcessing(); + + MaybeDispatchEncryptedEvent(aSamples->GetSamples()); +} + +void TrackBuffersManager::CompleteCodedFrameProcessing() { + MOZ_ASSERT(OnTaskQueue()); + AUTO_PROFILER_LABEL("TrackBuffersManager::CompleteCodedFrameProcessing", + MEDIA_PLAYBACK); + + // 1. For each coded frame in the media segment run the following steps: + // Coded Frame Processing steps 1.1 to 1.21. + + if (mSourceBufferAttributes->GetAppendMode() == + SourceBufferAppendMode::Sequence && + mVideoTracks.mQueuedSamples.Length() && + mAudioTracks.mQueuedSamples.Length()) { + // When we are in sequence mode, the order in which we process the frames is + // important as it determines the future value of timestampOffset. + // So we process the earliest sample first. See bug 1293576. + TimeInterval videoInterval = + PresentationInterval(mVideoTracks.mQueuedSamples); + TimeInterval audioInterval = + PresentationInterval(mAudioTracks.mQueuedSamples); + if (audioInterval.mStart < videoInterval.mStart) { + ProcessFrames(mAudioTracks.mQueuedSamples, mAudioTracks); + ProcessFrames(mVideoTracks.mQueuedSamples, mVideoTracks); + } else { + ProcessFrames(mVideoTracks.mQueuedSamples, mVideoTracks); + ProcessFrames(mAudioTracks.mQueuedSamples, mAudioTracks); + } + } else { + ProcessFrames(mVideoTracks.mQueuedSamples, mVideoTracks); + ProcessFrames(mAudioTracks.mQueuedSamples, mAudioTracks); + } + +#if defined(DEBUG) + if (HasVideo()) { + const auto& track = mVideoTracks.GetTrackBuffer(); + MOZ_ASSERT(track.IsEmpty() || track[0]->mKeyframe); + for (uint32_t i = 1; i < track.Length(); i++) { + MOZ_ASSERT( + (track[i - 1]->mTrackInfo->GetID() == track[i]->mTrackInfo->GetID() && + track[i - 1]->mTimecode <= track[i]->mTimecode) || + track[i]->mKeyframe); + } + } + if (HasAudio()) { + const auto& track = mAudioTracks.GetTrackBuffer(); + MOZ_ASSERT(track.IsEmpty() || track[0]->mKeyframe); + for (uint32_t i = 1; i < track.Length(); i++) { + MOZ_ASSERT( + (track[i - 1]->mTrackInfo->GetID() == track[i]->mTrackInfo->GetID() && + track[i - 1]->mTimecode <= track[i]->mTimecode) || + track[i]->mKeyframe); + } + } +#endif + + mVideoTracks.mQueuedSamples.Clear(); + mAudioTracks.mQueuedSamples.Clear(); + + UpdateBufferedRanges(); + + // Update our reported total size. + mSizeSourceBuffer = mVideoTracks.mSizeBuffer + mAudioTracks.mSizeBuffer; + + // Return to step 6.4 of Segment Parser Loop algorithm + // 4. If this SourceBuffer is full and cannot accept more media data, then set + // the buffer full flag to true. + if (mSizeSourceBuffer >= EvictionThreshold()) { + mBufferFull = true; + } + + // 5. If the input buffer does not contain a complete media segment, then jump + // to the need more data step below. + if (mParser->MediaSegmentRange().IsEmpty()) { + ResolveProcessing(true, __func__); + return; + } + + mLastParsedEndTime = Some(std::max(mAudioTracks.mLastParsedEndTime, + mVideoTracks.mLastParsedEndTime)); + + // 6. Remove the media segment bytes from the beginning of the input buffer. + // Clear our demuxer from any already processed data. + int64_t safeToEvict = + std::min(HasVideo() ? mVideoTracks.mDemuxer->GetEvictionOffset( + mVideoTracks.mLastParsedEndTime) + : INT64_MAX, + HasAudio() ? mAudioTracks.mDemuxer->GetEvictionOffset( + mAudioTracks.mLastParsedEndTime) + : INT64_MAX); + mCurrentInputBuffer->EvictBefore(safeToEvict); + + mInputDemuxer->NotifyDataRemoved(); + RecreateParser(true); + + // 7. Set append state to WAITING_FOR_SEGMENT. + SetAppendState(AppendState::WAITING_FOR_SEGMENT); + + // 8. Jump to the loop top step above. + ResolveProcessing(false, __func__); +} + +void TrackBuffersManager::RejectProcessing(const MediaResult& aRejectValue, + const char* aName) { + mProcessingPromise.RejectIfExists(aRejectValue, __func__); +} + +void TrackBuffersManager::ResolveProcessing(bool aResolveValue, + const char* aName) { + mProcessingPromise.ResolveIfExists(aResolveValue, __func__); +} + +void TrackBuffersManager::CheckSequenceDiscontinuity( + const TimeUnit& aPresentationTime) { + if (mSourceBufferAttributes->GetAppendMode() == + SourceBufferAppendMode::Sequence && + mSourceBufferAttributes->HaveGroupStartTimestamp()) { + mSourceBufferAttributes->SetTimestampOffset( + mSourceBufferAttributes->GetGroupStartTimestamp() - aPresentationTime); + mSourceBufferAttributes->SetGroupEndTimestamp( + mSourceBufferAttributes->GetGroupStartTimestamp()); + mVideoTracks.mNeedRandomAccessPoint = true; + mAudioTracks.mNeedRandomAccessPoint = true; + mSourceBufferAttributes->ResetGroupStartTimestamp(); + } +} + +TimeInterval TrackBuffersManager::PresentationInterval( + const TrackBuffer& aSamples) const { + TimeInterval presentationInterval = + TimeInterval(aSamples[0]->mTime, aSamples[0]->GetEndTime()); + + for (uint32_t i = 1; i < aSamples.Length(); i++) { + auto& sample = aSamples[i]; + presentationInterval = presentationInterval.Span( + TimeInterval(sample->mTime, sample->GetEndTime())); + } + return presentationInterval; +} + +void TrackBuffersManager::ProcessFrames(TrackBuffer& aSamples, + TrackData& aTrackData) { + AUTO_PROFILER_LABEL("TrackBuffersManager::ProcessFrames", MEDIA_PLAYBACK); + if (!aSamples.Length()) { + return; + } + + // 1. If generate timestamps flag equals true + // Let presentation timestamp equal 0. + // Otherwise + // Let presentation timestamp be a double precision floating point + // representation of the coded frame's presentation timestamp in seconds. + TimeUnit presentationTimestamp = mSourceBufferAttributes->mGenerateTimestamps + ? TimeUnit::Zero() + : aSamples[0]->mTime; + + // 3. If mode equals "sequence" and group start timestamp is set, then run the + // following steps: + CheckSequenceDiscontinuity(presentationTimestamp); + + // 5. Let track buffer equal the track buffer that the coded frame will be + // added to. + auto& trackBuffer = aTrackData; + + TimeIntervals samplesRange; + uint32_t sizeNewSamples = 0; + TrackBuffer samples; // array that will contain the frames to be added + // to our track buffer. + + // We assume that no frames are contiguous within a media segment and as such + // don't need to check for discontinuity except for the first frame and should + // a frame be ignored due to the target window. + bool needDiscontinuityCheck = true; + + // Highest presentation time seen in samples block. + TimeUnit highestSampleTime; + + if (aSamples.Length()) { + aTrackData.mLastParsedEndTime = TimeUnit(); + } + + auto addToSamples = [&](MediaRawData* aSample, + const TimeInterval& aInterval) { + aSample->mTime = aInterval.mStart; + aSample->mDuration = aInterval.Length(); + aSample->mTrackInfo = trackBuffer.mLastInfo; + MOZ_DIAGNOSTIC_ASSERT(aSample->HasValidTime()); + samplesRange += aInterval; + sizeNewSamples += aSample->ComputedSizeOfIncludingThis(); + samples.AppendElement(aSample); + }; + + // Will be set to the last frame dropped due to being outside mAppendWindow. + // It will be added prior the first following frame which can be added to the + // track buffer. + // This sample will be set with a duration of only 1us which will cause it to + // be dropped once returned by the decoder. + // This sample is required to "prime" the decoder so that the following frame + // can be fully decoded. + RefPtr<MediaRawData> previouslyDroppedSample; + for (auto& sample : aSamples) { + const TimeUnit sampleEndTime = sample->GetEndTime(); + if (sampleEndTime > aTrackData.mLastParsedEndTime) { + aTrackData.mLastParsedEndTime = sampleEndTime; + } + + // We perform step 10 right away as we can't do anything should a keyframe + // be needed until we have one. + + // 10. If the need random access point flag on track buffer equals true, + // then run the following steps: + if (trackBuffer.mNeedRandomAccessPoint) { + // 1. If the coded frame is not a random access point, then drop the coded + // frame and jump to the top of the loop to start processing the next + // coded frame. + if (!sample->mKeyframe) { + previouslyDroppedSample = nullptr; + continue; + } + // 2. Set the need random access point flag on track buffer to false. + trackBuffer.mNeedRandomAccessPoint = false; + } + + // We perform step 1,2 and 4 at once: + // 1. If generate timestamps flag equals true: + // Let presentation timestamp equal 0. + // Let decode timestamp equal 0. + // Otherwise: + // Let presentation timestamp be a double precision floating point + // representation of the coded frame's presentation timestamp in seconds. + // Let decode timestamp be a double precision floating point + // representation of the coded frame's decode timestamp in seconds. + + // 2. Let frame duration be a double precision floating point representation + // of the coded frame's duration in seconds. Step 3 is performed earlier or + // when a discontinuity has been detected. + // 4. If timestampOffset is not 0, then run the following steps: + + TimeUnit sampleTime = sample->mTime; + TimeUnit sampleTimecode = sample->mTimecode; + TimeUnit sampleDuration = sample->mDuration; + // Keep the timestamp, set by js, in the time base of the container. + TimeUnit timestampOffset = + mSourceBufferAttributes->GetTimestampOffset().ToBase(sample->mTime); + + TimeInterval sampleInterval = + mSourceBufferAttributes->mGenerateTimestamps + ? TimeInterval(timestampOffset, timestampOffset + sampleDuration) + : TimeInterval(timestampOffset + sampleTime, + timestampOffset + sampleTime + sampleDuration); + TimeUnit decodeTimestamp = mSourceBufferAttributes->mGenerateTimestamps + ? timestampOffset + : timestampOffset + sampleTimecode; + + SAMPLE_DEBUG( + "Processing %s frame [%" PRId64 ",%" PRId64 "] (adjusted:[%" PRId64 + ",%" PRId64 "]), dts:%" PRId64 ", duration:%" PRId64 ", kf:%d)", + aTrackData.mInfo->mMimeType.get(), sample->mTime.ToMicroseconds(), + sample->GetEndTime().ToMicroseconds(), + sampleInterval.mStart.ToMicroseconds(), + sampleInterval.mEnd.ToMicroseconds(), + sample->mTimecode.ToMicroseconds(), sample->mDuration.ToMicroseconds(), + sample->mKeyframe); + + // 6. If last decode timestamp for track buffer is set and decode timestamp + // is less than last decode timestamp: OR If last decode timestamp for track + // buffer is set and the difference between decode timestamp and last decode + // timestamp is greater than 2 times last frame duration: + if (needDiscontinuityCheck && trackBuffer.mLastDecodeTimestamp.isSome() && + (decodeTimestamp < trackBuffer.mLastDecodeTimestamp.ref() || + (decodeTimestamp - trackBuffer.mLastDecodeTimestamp.ref() > + trackBuffer.mLongestFrameDuration * 2))) { + MSE_DEBUG("Discontinuity detected."); + SourceBufferAppendMode appendMode = + mSourceBufferAttributes->GetAppendMode(); + + // 1a. If mode equals "segments": + if (appendMode == SourceBufferAppendMode::Segments) { + // Set group end timestamp to presentation timestamp. + mSourceBufferAttributes->SetGroupEndTimestamp(sampleInterval.mStart); + } + // 1b. If mode equals "sequence": + if (appendMode == SourceBufferAppendMode::Sequence) { + // Set group start timestamp equal to the group end timestamp. + mSourceBufferAttributes->SetGroupStartTimestamp( + mSourceBufferAttributes->GetGroupEndTimestamp()); + } + for (auto& track : GetTracksList()) { + // 2. Unset the last decode timestamp on all track buffers. + // 3. Unset the last frame duration on all track buffers. + // 4. Unset the highest end timestamp on all track buffers. + // 5. Set the need random access point flag on all track buffers to + // true. + track->ResetAppendState(); + } + // 6. Jump to the Loop Top step above to restart processing of the current + // coded frame. Rather that restarting the process for the frame, we run + // the first steps again instead. + // 3. If mode equals "sequence" and group start timestamp is set, then run + // the following steps: + TimeUnit presentationTimestamp = + mSourceBufferAttributes->mGenerateTimestamps ? TimeUnit() + : sampleTime; + CheckSequenceDiscontinuity(presentationTimestamp); + + if (!sample->mKeyframe) { + previouslyDroppedSample = nullptr; + continue; + } + if (appendMode == SourceBufferAppendMode::Sequence) { + // mSourceBufferAttributes->GetTimestampOffset() was modified during + // CheckSequenceDiscontinuity. We need to update our variables. + timestampOffset = mSourceBufferAttributes->GetTimestampOffset(); + sampleInterval = + mSourceBufferAttributes->mGenerateTimestamps + ? TimeInterval(timestampOffset, + timestampOffset + sampleDuration) + : TimeInterval(timestampOffset + sampleTime, + timestampOffset + sampleTime + sampleDuration); + decodeTimestamp = mSourceBufferAttributes->mGenerateTimestamps + ? timestampOffset + : timestampOffset + sampleTimecode; + } + trackBuffer.mNeedRandomAccessPoint = false; + needDiscontinuityCheck = false; + } + + // 7. Let frame end timestamp equal the sum of presentation timestamp and + // frame duration. This is sampleInterval.mEnd + + // 8. If presentation timestamp is less than appendWindowStart, then set the + // need random access point flag to true, drop the coded frame, and jump to + // the top of the loop to start processing the next coded frame. + // 9. If frame end timestamp is greater than appendWindowEnd, then set the + // need random access point flag to true, drop the coded frame, and jump to + // the top of the loop to start processing the next coded frame. + if (!mAppendWindow.ContainsStrict(sampleInterval)) { + if (mAppendWindow.IntersectsStrict(sampleInterval)) { + // 8. Note: Some implementations MAY choose to collect some of these + // coded frames with presentation timestamp less than + // appendWindowStart and use them to generate a splice at the first + // coded frame that has a presentation timestamp greater than or + // equal to appendWindowStart even if that frame is not a random + // access point. Supporting this requires multiple decoders or faster + // than real-time decoding so for now this behavior will not be a + // normative requirement. + // 9. Note: Some implementations MAY choose to collect coded frames with + // presentation timestamp less than appendWindowEnd and frame end + // timestamp greater than appendWindowEnd and use them to generate a + // splice across the portion of the collected coded frames within the + // append window at time of collection, and the beginning portion of + // later processed frames which only partially overlap the end of the + // collected coded frames. Supporting this requires multiple decoders + // or faster than real-time decoding so for now this behavior will + // not be a normative requirement. In conjunction with collecting + // coded frames that span appendWindowStart, implementations MAY thus + // support gapless audio splicing. + TimeInterval intersection = mAppendWindow.Intersection(sampleInterval); + sample->mOriginalPresentationWindow = Some(sampleInterval); + MSE_DEBUGV("will truncate frame from [%" PRId64 ",%" PRId64 + "] to [%" PRId64 ",%" PRId64 "]", + sampleInterval.mStart.ToMicroseconds(), + sampleInterval.mEnd.ToMicroseconds(), + intersection.mStart.ToMicroseconds(), + intersection.mEnd.ToMicroseconds()); + sampleInterval = intersection; + } else { + sample->mOriginalPresentationWindow = Some(sampleInterval); + sample->mTimecode = decodeTimestamp; + previouslyDroppedSample = sample; + MSE_DEBUGV("frame [%" PRId64 ",%" PRId64 + "] outside appendWindow [%" PRId64 ",%" PRId64 "] dropping", + sampleInterval.mStart.ToMicroseconds(), + sampleInterval.mEnd.ToMicroseconds(), + mAppendWindow.mStart.ToMicroseconds(), + mAppendWindow.mEnd.ToMicroseconds()); + if (samples.Length()) { + // We are creating a discontinuity in the samples. + // Insert the samples processed so far. + InsertFrames(samples, samplesRange, trackBuffer); + samples.Clear(); + samplesRange = TimeIntervals(); + trackBuffer.mSizeBuffer += sizeNewSamples; + sizeNewSamples = 0; + UpdateHighestTimestamp(trackBuffer, highestSampleTime); + } + trackBuffer.mNeedRandomAccessPoint = true; + needDiscontinuityCheck = true; + continue; + } + } + if (previouslyDroppedSample) { + MSE_DEBUGV("Adding silent frame"); + // This "silent" sample will be added so that it starts exactly before the + // first usable one. The duration of the actual sample will be adjusted so + // that the total duration staty the same. + // Setting a dummy presentation window of 1us will cause this sample to be + // dropped after decoding by the AudioTrimmer (if audio). + TimeInterval previouslyDroppedSampleInterval = + TimeInterval(sampleInterval.mStart, + sampleInterval.mStart + TimeUnit::FromMicroseconds(1)); + addToSamples(previouslyDroppedSample, previouslyDroppedSampleInterval); + previouslyDroppedSample = nullptr; + sampleInterval.mStart += previouslyDroppedSampleInterval.Length(); + } + + sample->mTimecode = decodeTimestamp; + addToSamples(sample, sampleInterval); + + // Steps 11,12,13,14, 15 and 16 will be done in one block in InsertFrames. + + trackBuffer.mLongestFrameDuration = + trackBuffer.mLastFrameDuration.isSome() + ? sample->mKeyframe + ? sampleDuration + : std::max(sampleDuration, trackBuffer.mLongestFrameDuration) + : sampleDuration; + + // 17. Set last decode timestamp for track buffer to decode timestamp. + trackBuffer.mLastDecodeTimestamp = Some(decodeTimestamp); + // 18. Set last frame duration for track buffer to frame duration. + trackBuffer.mLastFrameDuration = Some(sampleDuration); + + // 19. If highest end timestamp for track buffer is unset or frame end + // timestamp is greater than highest end timestamp, then set highest end + // timestamp for track buffer to frame end timestamp. + if (trackBuffer.mHighestEndTimestamp.isNothing() || + sampleInterval.mEnd > trackBuffer.mHighestEndTimestamp.ref()) { + trackBuffer.mHighestEndTimestamp = Some(sampleInterval.mEnd); + } + if (sampleInterval.mStart > highestSampleTime) { + highestSampleTime = sampleInterval.mStart; + } + // 20. If frame end timestamp is greater than group end timestamp, then set + // group end timestamp equal to frame end timestamp. + if (sampleInterval.mEnd > mSourceBufferAttributes->GetGroupEndTimestamp()) { + mSourceBufferAttributes->SetGroupEndTimestamp(sampleInterval.mEnd); + } + // 21. If generate timestamps flag equals true, then set timestampOffset + // equal to frame end timestamp. + if (mSourceBufferAttributes->mGenerateTimestamps) { + mSourceBufferAttributes->SetTimestampOffset(sampleInterval.mEnd); + } + } + + if (samples.Length()) { + InsertFrames(samples, samplesRange, trackBuffer); + trackBuffer.mSizeBuffer += sizeNewSamples; + UpdateHighestTimestamp(trackBuffer, highestSampleTime); + } +} + +bool TrackBuffersManager::CheckNextInsertionIndex(TrackData& aTrackData, + const TimeUnit& aSampleTime) { + if (aTrackData.mNextInsertionIndex.isSome()) { + return true; + } + + const TrackBuffer& data = aTrackData.GetTrackBuffer(); + + if (data.IsEmpty() || aSampleTime < aTrackData.mBufferedRanges.GetStart()) { + aTrackData.mNextInsertionIndex = Some(0u); + return true; + } + + // Find which discontinuity we should insert the frame before. + TimeInterval target; + for (const auto& interval : aTrackData.mBufferedRanges) { + if (aSampleTime < interval.mStart) { + target = interval; + break; + } + } + if (target.IsEmpty()) { + // No target found, it will be added at the end of the track buffer. + aTrackData.mNextInsertionIndex = Some(uint32_t(data.Length())); + return true; + } + // We now need to find the first frame of the searched interval. + // We will insert our new frames right before. + for (uint32_t i = 0; i < data.Length(); i++) { + const RefPtr<MediaRawData>& sample = data[i]; + if (sample->mTime >= target.mStart || + sample->GetEndTime() > target.mStart) { + aTrackData.mNextInsertionIndex = Some(i); + return true; + } + } + NS_ASSERTION(false, "Insertion Index Not Found"); + return false; +} + +void TrackBuffersManager::InsertFrames(TrackBuffer& aSamples, + const TimeIntervals& aIntervals, + TrackData& aTrackData) { + AUTO_PROFILER_LABEL("TrackBuffersManager::InsertFrames", MEDIA_PLAYBACK); + // 5. Let track buffer equal the track buffer that the coded frame will be + // added to. + auto& trackBuffer = aTrackData; + + MSE_DEBUGV("Processing %zu %s frames(start:%" PRId64 " end:%" PRId64 ")", + aSamples.Length(), aTrackData.mInfo->mMimeType.get(), + aIntervals.GetStart().ToMicroseconds(), + aIntervals.GetEnd().ToMicroseconds()); + if (profiler_thread_is_being_profiled_for_markers()) { + nsPrintfCString markerString( + "Processing %zu %s frames(start:%" PRId64 " end:%" PRId64 ")", + aSamples.Length(), aTrackData.mInfo->mMimeType.get(), + aIntervals.GetStart().ToMicroseconds(), + aIntervals.GetEnd().ToMicroseconds()); + PROFILER_MARKER_TEXT("InsertFrames", MEDIA_PLAYBACK, {}, markerString); + } + + // 11. Let spliced audio frame be an unset variable for holding audio splice + // information + // 12. Let spliced timed text frame be an unset variable for holding timed + // text splice information + + // 13. If last decode timestamp for track buffer is unset and presentation + // timestamp falls within the presentation interval of a coded frame in track + // buffer,then run the following steps: For now we only handle replacing + // existing frames with the new ones. So we skip this step. + + // 14. Remove existing coded frames in track buffer: + // a) If highest end timestamp for track buffer is not set: + // Remove all coded frames from track buffer that have a presentation + // timestamp greater than or equal to presentation timestamp and less + // than frame end timestamp. + // b) If highest end timestamp for track buffer is set and less than or + // equal to presentation timestamp: + // Remove all coded frames from track buffer that have a presentation + // timestamp greater than or equal to highest end timestamp and less than + // frame end timestamp + + // There is an ambiguity on how to remove frames, which was lodged with: + // https://www.w3.org/Bugs/Public/show_bug.cgi?id=28710, implementing as per + // bug description. + + // 15. Remove decoding dependencies of the coded frames removed in the + // previous step: Remove all coded frames between the coded frames removed in + // the previous step and the next random access point after those removed + // frames. + + if (trackBuffer.mBufferedRanges.IntersectsStrict(aIntervals)) { + if (aSamples[0]->mKeyframe && + (mType.Type() == MEDIAMIMETYPE("video/webm") || + mType.Type() == MEDIAMIMETYPE("audio/webm"))) { + // We are starting a new GOP, we do not have to worry about breaking an + // existing current coded frame group. Reset the next insertion index + // so the search for when to start our frames removal can be exhaustive. + // This is a workaround for bug 1276184 and only until either bug 1277733 + // or bug 1209386 is fixed. + // With the webm container, we can't always properly determine the + // duration of the last frame, which may cause the last frame of a cluster + // to overlap the following frame. + trackBuffer.mNextInsertionIndex.reset(); + } + uint32_t index = RemoveFrames(aIntervals, trackBuffer, + trackBuffer.mNextInsertionIndex.refOr(0), + RemovalMode::kTruncateFrame); + if (index) { + trackBuffer.mNextInsertionIndex = Some(index); + } + } + + // 16. Add the coded frame with the presentation timestamp, decode timestamp, + // and frame duration to the track buffer. + if (!CheckNextInsertionIndex(aTrackData, aSamples[0]->mTime)) { + RejectProcessing(NS_ERROR_FAILURE, __func__); + return; + } + + // Adjust our demuxing index if necessary. + if (trackBuffer.mNextGetSampleIndex.isSome()) { + if (trackBuffer.mNextInsertionIndex.ref() == + trackBuffer.mNextGetSampleIndex.ref() && + aIntervals.GetEnd() >= trackBuffer.mNextSampleTime) { + MSE_DEBUG("Next sample to be played got overwritten"); + trackBuffer.mNextGetSampleIndex.reset(); + ResetEvictionIndex(trackBuffer); + } else if (trackBuffer.mNextInsertionIndex.ref() <= + trackBuffer.mNextGetSampleIndex.ref()) { + trackBuffer.mNextGetSampleIndex.ref() += aSamples.Length(); + // We could adjust the eviction index so that the new data gets added to + // the evictable amount (as it is prior currentTime). However, considering + // new data is being added prior the current playback, it's likely that + // this data will be played next, and as such we probably don't want to + // have it evicted too early. So instead reset the eviction index instead. + ResetEvictionIndex(trackBuffer); + } + } + + TrackBuffer& data = trackBuffer.GetTrackBuffer(); + data.InsertElementsAt(trackBuffer.mNextInsertionIndex.ref(), aSamples); + trackBuffer.mNextInsertionIndex.ref() += aSamples.Length(); + + // Update our buffered range with new sample interval. + trackBuffer.mBufferedRanges += aIntervals; + // We allow a fuzz factor in our interval of half a frame length, + // as fuzz is +/- value, giving an effective leeway of a full frame + // length. + if (!aIntervals.IsEmpty()) { + TimeIntervals range(aIntervals); + range.SetFuzz(trackBuffer.mLongestFrameDuration / 2); + trackBuffer.mSanitizedBufferedRanges += range; + } +} + +void TrackBuffersManager::UpdateHighestTimestamp( + TrackData& aTrackData, const media::TimeUnit& aHighestTime) { + if (aHighestTime > aTrackData.mHighestStartTimestamp) { + MutexAutoLock mut(mMutex); + aTrackData.mHighestStartTimestamp = aHighestTime; + } +} + +uint32_t TrackBuffersManager::RemoveFrames(const TimeIntervals& aIntervals, + TrackData& aTrackData, + uint32_t aStartIndex, + RemovalMode aMode) { + AUTO_PROFILER_LABEL("TrackBuffersManager::RemoveFrames", MEDIA_PLAYBACK); + TrackBuffer& data = aTrackData.GetTrackBuffer(); + Maybe<uint32_t> firstRemovedIndex; + uint32_t lastRemovedIndex = 0; + + // We loop from aStartIndex to avoid removing frames that we inserted earlier + // and part of the current coded frame group. This is allows to handle step + // 14 of the coded frame processing algorithm without having to check the + // value of highest end timestamp: "Remove existing coded frames in track + // buffer: + // If highest end timestamp for track buffer is not set: + // Remove all coded frames from track buffer that have a presentation + // timestamp greater than or equal to presentation timestamp and less than + // frame end timestamp. + // If highest end timestamp for track buffer is set and less than or equal to + // presentation timestamp: + // Remove all coded frames from track buffer that have a presentation + // timestamp greater than or equal to highest end timestamp and less than + // frame end timestamp" + TimeUnit intervalsEnd = aIntervals.GetEnd(); + for (uint32_t i = aStartIndex; i < data.Length(); i++) { + RefPtr<MediaRawData>& sample = data[i]; + if (aIntervals.ContainsStrict(sample->mTime)) { + // The start of this existing frame will be overwritten, we drop that + // entire frame. + MSE_DEBUGV("overridding start of frame [%" PRId64 ",%" PRId64 + "] with [%" PRId64 ",%" PRId64 "] dropping", + sample->mTime.ToMicroseconds(), + sample->GetEndTime().ToMicroseconds(), + aIntervals.GetStart().ToMicroseconds(), + aIntervals.GetEnd().ToMicroseconds()); + if (firstRemovedIndex.isNothing()) { + firstRemovedIndex = Some(i); + } + lastRemovedIndex = i; + continue; + } + TimeInterval sampleInterval(sample->mTime, sample->GetEndTime()); + if (aMode == RemovalMode::kTruncateFrame && + aIntervals.IntersectsStrict(sampleInterval)) { + // The sample to be overwritten is only partially covered. + TimeIntervals intersection = + Intersection(aIntervals, TimeIntervals(sampleInterval)); + bool found = false; + TimeUnit startTime = intersection.GetStart(&found); + MOZ_DIAGNOSTIC_ASSERT(found, "Must intersect with added coded frames"); + Unused << found; + // Signal that this frame should be truncated when decoded. + if (!sample->mOriginalPresentationWindow) { + sample->mOriginalPresentationWindow = Some(sampleInterval); + } + MOZ_ASSERT(startTime > sample->mTime); + sample->mDuration = startTime - sample->mTime; + MOZ_DIAGNOSTIC_ASSERT(sample->mDuration.IsValid()); + MSE_DEBUGV("partial overwrite of frame [%" PRId64 ",%" PRId64 + "] with [%" PRId64 ",%" PRId64 + "] trim to " + "[%" PRId64 ",%" PRId64 "]", + sampleInterval.mStart.ToMicroseconds(), + sampleInterval.mEnd.ToMicroseconds(), + aIntervals.GetStart().ToMicroseconds(), + aIntervals.GetEnd().ToMicroseconds(), + sample->mTime.ToMicroseconds(), + sample->GetEndTime().ToMicroseconds()); + continue; + } + + if (sample->mTime >= intervalsEnd) { + // We can break the loop now. All frames up to the next keyframe will be + // removed during the next step. + break; + } + } + + if (firstRemovedIndex.isNothing()) { + return 0; + } + + // Remove decoding dependencies of the coded frames removed in the previous + // step: Remove all coded frames between the coded frames removed in the + // previous step and the next random access point after those removed frames. + for (uint32_t i = lastRemovedIndex + 1; i < data.Length(); i++) { + const RefPtr<MediaRawData>& sample = data[i]; + if (sample->mKeyframe) { + break; + } + lastRemovedIndex = i; + } + + TimeUnit maxSampleDuration; + uint32_t sizeRemoved = 0; + TimeIntervals removedIntervals; + for (uint32_t i = firstRemovedIndex.ref(); i <= lastRemovedIndex; i++) { + const RefPtr<MediaRawData> sample = data[i]; + TimeInterval sampleInterval = + TimeInterval(sample->mTime, sample->GetEndTime()); + removedIntervals += sampleInterval; + if (sample->mDuration > maxSampleDuration) { + maxSampleDuration = sample->mDuration; + } + sizeRemoved += sample->ComputedSizeOfIncludingThis(); + } + aTrackData.mSizeBuffer -= sizeRemoved; + + MSE_DEBUG("Removing frames from:%u (frames:%u) ([%f, %f))", + firstRemovedIndex.ref(), + lastRemovedIndex - firstRemovedIndex.ref() + 1, + removedIntervals.GetStart().ToSeconds(), + removedIntervals.GetEnd().ToSeconds()); + if (profiler_thread_is_being_profiled_for_markers()) { + nsPrintfCString markerString( + "Removing frames from:%u (frames:%u) ([%f, %f))", + firstRemovedIndex.ref(), lastRemovedIndex - firstRemovedIndex.ref() + 1, + removedIntervals.GetStart().ToSeconds(), + removedIntervals.GetEnd().ToSeconds()); + PROFILER_MARKER_TEXT("RemoveFrames", MEDIA_PLAYBACK, {}, markerString); + } + + if (aTrackData.mNextGetSampleIndex.isSome()) { + if (aTrackData.mNextGetSampleIndex.ref() >= firstRemovedIndex.ref() && + aTrackData.mNextGetSampleIndex.ref() <= lastRemovedIndex) { + MSE_DEBUG("Next sample to be played got evicted"); + aTrackData.mNextGetSampleIndex.reset(); + ResetEvictionIndex(aTrackData); + } else if (aTrackData.mNextGetSampleIndex.ref() > lastRemovedIndex) { + uint32_t samplesRemoved = lastRemovedIndex - firstRemovedIndex.ref() + 1; + aTrackData.mNextGetSampleIndex.ref() -= samplesRemoved; + if (aTrackData.mEvictionIndex.mLastIndex > lastRemovedIndex) { + MOZ_DIAGNOSTIC_ASSERT( + aTrackData.mEvictionIndex.mLastIndex >= samplesRemoved && + aTrackData.mEvictionIndex.mEvictable >= sizeRemoved, + "Invalid eviction index"); + MutexAutoLock mut(mMutex); + aTrackData.mEvictionIndex.mLastIndex -= samplesRemoved; + aTrackData.mEvictionIndex.mEvictable -= sizeRemoved; + } else { + ResetEvictionIndex(aTrackData); + } + } + } + + if (aTrackData.mNextInsertionIndex.isSome()) { + if (aTrackData.mNextInsertionIndex.ref() > firstRemovedIndex.ref() && + aTrackData.mNextInsertionIndex.ref() <= lastRemovedIndex + 1) { + aTrackData.ResetAppendState(); + MSE_DEBUG("NextInsertionIndex got reset."); + } else if (aTrackData.mNextInsertionIndex.ref() > lastRemovedIndex + 1) { + aTrackData.mNextInsertionIndex.ref() -= + lastRemovedIndex - firstRemovedIndex.ref() + 1; + } + } + + // Update our buffered range to exclude the range just removed. + aTrackData.mBufferedRanges -= removedIntervals; + + // Recalculate sanitized buffered ranges. + aTrackData.mSanitizedBufferedRanges = aTrackData.mBufferedRanges; + aTrackData.mSanitizedBufferedRanges.SetFuzz(maxSampleDuration / 2); + + data.RemoveElementsAt(firstRemovedIndex.ref(), + lastRemovedIndex - firstRemovedIndex.ref() + 1); + + if (removedIntervals.GetEnd() >= aTrackData.mHighestStartTimestamp && + removedIntervals.GetStart() <= aTrackData.mHighestStartTimestamp) { + // The sample with the highest presentation time got removed. + // Rescan the trackbuffer to determine the new one. + TimeUnit highestStartTime; + for (const auto& sample : data) { + if (sample->mTime > highestStartTime) { + highestStartTime = sample->mTime; + } + } + MutexAutoLock mut(mMutex); + aTrackData.mHighestStartTimestamp = highestStartTime; + } + + return firstRemovedIndex.ref(); +} + +void TrackBuffersManager::RecreateParser(bool aReuseInitData) { + MOZ_ASSERT(OnTaskQueue()); + // Recreate our parser for only the data remaining. This is required + // as it has parsed the entire InputBuffer provided. + // Once the old TrackBuffer/MediaSource implementation is removed + // we can optimize this part. TODO + if (mParser) { + DDUNLINKCHILD(mParser.get()); + } + mParser = ContainerParser::CreateForMIMEType(mType); + DDLINKCHILD("parser", mParser.get()); + if (aReuseInitData && mInitData) { + TimeUnit start, end; + mParser->ParseStartAndEndTimestamps(MediaSpan(mInitData), start, end); + mProcessedInput = mInitData->Length(); + } else { + mProcessedInput = 0; + } +} + +nsTArray<TrackBuffersManager::TrackData*> TrackBuffersManager::GetTracksList() { + nsTArray<TrackData*> tracks; + if (HasVideo()) { + tracks.AppendElement(&mVideoTracks); + } + if (HasAudio()) { + tracks.AppendElement(&mAudioTracks); + } + return tracks; +} + +nsTArray<const TrackBuffersManager::TrackData*> +TrackBuffersManager::GetTracksList() const { + nsTArray<const TrackData*> tracks; + if (HasVideo()) { + tracks.AppendElement(&mVideoTracks); + } + if (HasAudio()) { + tracks.AppendElement(&mAudioTracks); + } + return tracks; +} + +void TrackBuffersManager::SetAppendState(AppendState aAppendState) { + MSE_DEBUG("AppendState changed from %s to %s", + AppendStateToStr(mSourceBufferAttributes->GetAppendState()), + AppendStateToStr(aAppendState)); + mSourceBufferAttributes->SetAppendState(aAppendState); +} + +MediaInfo TrackBuffersManager::GetMetadata() const { + MutexAutoLock mut(mMutex); + return mInfo; +} + +const TimeIntervals& TrackBuffersManager::Buffered( + TrackInfo::TrackType aTrack) const { + MOZ_ASSERT(OnTaskQueue()); + return GetTracksData(aTrack).mBufferedRanges; +} + +const media::TimeUnit& TrackBuffersManager::HighestStartTime( + TrackInfo::TrackType aTrack) const { + MOZ_ASSERT(OnTaskQueue()); + return GetTracksData(aTrack).mHighestStartTimestamp; +} + +TimeIntervals TrackBuffersManager::SafeBuffered( + TrackInfo::TrackType aTrack) const { + MutexAutoLock mut(mMutex); + return aTrack == TrackInfo::kVideoTrack ? mVideoBufferedRanges + : mAudioBufferedRanges; +} + +TimeUnit TrackBuffersManager::HighestStartTime() const { + MutexAutoLock mut(mMutex); + TimeUnit highestStartTime; + for (auto& track : GetTracksList()) { + highestStartTime = + std::max(track->mHighestStartTimestamp, highestStartTime); + } + return highestStartTime; +} + +TimeUnit TrackBuffersManager::HighestEndTime() const { + MutexAutoLock mut(mMutex); + + nsTArray<const TimeIntervals*> tracks; + if (HasVideo()) { + tracks.AppendElement(&mVideoBufferedRanges); + } + if (HasAudio()) { + tracks.AppendElement(&mAudioBufferedRanges); + } + return HighestEndTime(tracks); +} + +TimeUnit TrackBuffersManager::HighestEndTime( + nsTArray<const TimeIntervals*>& aTracks) const { + mMutex.AssertCurrentThreadOwns(); + + TimeUnit highestEndTime; + + for (const auto& trackRanges : aTracks) { + highestEndTime = std::max(trackRanges->GetEnd(), highestEndTime); + } + return highestEndTime; +} + +void TrackBuffersManager::ResetEvictionIndex(TrackData& aTrackData) { + MutexAutoLock mut(mMutex); + aTrackData.mEvictionIndex.Reset(); +} + +void TrackBuffersManager::UpdateEvictionIndex(TrackData& aTrackData, + uint32_t currentIndex) { + uint32_t evictable = 0; + TrackBuffer& data = aTrackData.GetTrackBuffer(); + MOZ_DIAGNOSTIC_ASSERT(currentIndex >= aTrackData.mEvictionIndex.mLastIndex, + "Invalid call"); + MOZ_DIAGNOSTIC_ASSERT( + currentIndex == data.Length() || data[currentIndex]->mKeyframe, + "Must stop at keyframe"); + + for (uint32_t i = aTrackData.mEvictionIndex.mLastIndex; i < currentIndex; + i++) { + evictable += data[i]->ComputedSizeOfIncludingThis(); + } + aTrackData.mEvictionIndex.mLastIndex = currentIndex; + MutexAutoLock mut(mMutex); + aTrackData.mEvictionIndex.mEvictable += evictable; +} + +const TrackBuffersManager::TrackBuffer& TrackBuffersManager::GetTrackBuffer( + TrackInfo::TrackType aTrack) const { + MOZ_ASSERT(OnTaskQueue()); + return GetTracksData(aTrack).GetTrackBuffer(); +} + +uint32_t TrackBuffersManager::FindSampleIndex(const TrackBuffer& aTrackBuffer, + const TimeInterval& aInterval) { + TimeUnit target = aInterval.mStart - aInterval.mFuzz; + + for (uint32_t i = 0; i < aTrackBuffer.Length(); i++) { + const RefPtr<MediaRawData>& sample = aTrackBuffer[i]; + if (sample->mTime >= target || sample->GetEndTime() > target) { + return i; + } + } + NS_ASSERTION(false, "FindSampleIndex called with invalid arguments"); + + return 0; +} + +TimeUnit TrackBuffersManager::Seek(TrackInfo::TrackType aTrack, + const TimeUnit& aTime, + const TimeUnit& aFuzz) { + MOZ_ASSERT(OnTaskQueue()); + AUTO_PROFILER_LABEL("TrackBuffersManager::Seek", MEDIA_PLAYBACK); + auto& trackBuffer = GetTracksData(aTrack); + const TrackBuffersManager::TrackBuffer& track = GetTrackBuffer(aTrack); + + if (!track.Length()) { + // This a reset. It will be followed by another valid seek. + trackBuffer.mNextGetSampleIndex = Some(uint32_t(0)); + trackBuffer.mNextSampleTimecode = TimeUnit(); + trackBuffer.mNextSampleTime = TimeUnit(); + ResetEvictionIndex(trackBuffer); + return TimeUnit(); + } + + uint32_t i = 0; + + if (aTime != TimeUnit()) { + // Determine the interval of samples we're attempting to seek to. + TimeIntervals buffered = trackBuffer.mBufferedRanges; + // Fuzz factor is +/- aFuzz; as we want to only eliminate gaps + // that are less than aFuzz wide, we set a fuzz factor aFuzz/2. + buffered.SetFuzz(aFuzz / 2); + TimeIntervals::IndexType index = buffered.Find(aTime); + MOZ_ASSERT(index != TimeIntervals::NoIndex, + "We shouldn't be called if aTime isn't buffered"); + TimeInterval target = buffered[index]; + target.mFuzz = aFuzz; + i = FindSampleIndex(track, target); + } + + Maybe<TimeUnit> lastKeyFrameTime; + TimeUnit lastKeyFrameTimecode; + uint32_t lastKeyFrameIndex = 0; + for (; i < track.Length(); i++) { + const RefPtr<MediaRawData>& sample = track[i]; + TimeUnit sampleTime = sample->mTime; + if (sampleTime > aTime && lastKeyFrameTime.isSome()) { + break; + } + if (sample->mKeyframe) { + lastKeyFrameTimecode = sample->mTimecode; + lastKeyFrameTime = Some(sampleTime); + lastKeyFrameIndex = i; + } + if (sampleTime == aTime || + (sampleTime > aTime && lastKeyFrameTime.isSome())) { + break; + } + } + MSE_DEBUG("Keyframe %s found at %" PRId64 " @ %u", + lastKeyFrameTime.isSome() ? "" : "not", + lastKeyFrameTime.refOr(TimeUnit()).ToMicroseconds(), + lastKeyFrameIndex); + + trackBuffer.mNextGetSampleIndex = Some(lastKeyFrameIndex); + trackBuffer.mNextSampleTimecode = lastKeyFrameTimecode; + trackBuffer.mNextSampleTime = lastKeyFrameTime.refOr(TimeUnit()); + ResetEvictionIndex(trackBuffer); + UpdateEvictionIndex(trackBuffer, lastKeyFrameIndex); + + return lastKeyFrameTime.refOr(TimeUnit()); +} + +uint32_t TrackBuffersManager::SkipToNextRandomAccessPoint( + TrackInfo::TrackType aTrack, const TimeUnit& aTimeThreadshold, + const media::TimeUnit& aFuzz, bool& aFound) { + mTaskQueueCapability->AssertOnCurrentThread(); + AUTO_PROFILER_LABEL("TrackBuffersManager::SkipToNextRandomAccessPoint", + MEDIA_PLAYBACK); + uint32_t parsed = 0; + auto& trackData = GetTracksData(aTrack); + const TrackBuffer& track = GetTrackBuffer(aTrack); + aFound = false; + + // SkipToNextRandomAccessPoint can only be called if aTimeThreadshold is known + // to be buffered. + + if (NS_FAILED(SetNextGetSampleIndexIfNeeded(aTrack, aFuzz))) { + return 0; + } + + TimeUnit nextSampleTimecode = trackData.mNextSampleTimecode; + TimeUnit nextSampleTime = trackData.mNextSampleTime; + uint32_t i = trackData.mNextGetSampleIndex.ref(); + int32_t originalPos = i; + + for (; i < track.Length(); i++) { + const MediaRawData* sample = + GetSample(aTrack, i, nextSampleTimecode, nextSampleTime, aFuzz); + if (!sample) { + break; + } + if (sample->mKeyframe && sample->mTime >= aTimeThreadshold) { + aFound = true; + break; + } + nextSampleTimecode = sample->GetEndTimecode(); + nextSampleTime = sample->GetEndTime(); + parsed++; + } + + // Adjust the next demux time and index so that the next call to + // SkipToNextRandomAccessPoint will not count again the parsed sample as + // skipped. + if (aFound) { + trackData.mNextSampleTimecode = track[i]->mTimecode; + trackData.mNextSampleTime = track[i]->mTime; + trackData.mNextGetSampleIndex = Some(i); + } else if (i > 0) { + // Go back to the previous keyframe or the original position so the next + // demux can succeed and be decoded. + for (int j = i - 1; j >= originalPos; j--) { + const RefPtr<MediaRawData>& sample = track[j]; + if (sample->mKeyframe) { + trackData.mNextSampleTimecode = sample->mTimecode; + trackData.mNextSampleTime = sample->mTime; + trackData.mNextGetSampleIndex = Some(uint32_t(j)); + // We are unable to skip to a keyframe past aTimeThreshold, however + // we are speeding up decoding by dropping the unplayable frames. + // So we can mark aFound as true. + aFound = true; + break; + } + parsed--; + } + } + + if (aFound) { + UpdateEvictionIndex(trackData, trackData.mNextGetSampleIndex.ref()); + } + + return parsed; +} + +const MediaRawData* TrackBuffersManager::GetSample(TrackInfo::TrackType aTrack, + uint32_t aIndex, + const TimeUnit& aExpectedDts, + const TimeUnit& aExpectedPts, + const TimeUnit& aFuzz) { + MOZ_ASSERT(OnTaskQueue()); + const TrackBuffer& track = GetTrackBuffer(aTrack); + + if (aIndex >= track.Length()) { + // reached the end. + return nullptr; + } + + if (!(aExpectedDts + aFuzz).IsValid() || !(aExpectedPts + aFuzz).IsValid()) { + // Time overflow, it seems like we also reached the end. + return nullptr; + } + + const RefPtr<MediaRawData>& sample = track[aIndex]; + if (!aIndex || sample->mTimecode <= aExpectedDts + aFuzz || + sample->mTime <= aExpectedPts + aFuzz) { + MOZ_DIAGNOSTIC_ASSERT(sample->HasValidTime()); + return sample; + } + + // Gap is too big. End of Stream or Waiting for Data. + // TODO, check that we have continuous data based on the sanitized buffered + // range instead. + return nullptr; +} + +already_AddRefed<MediaRawData> TrackBuffersManager::GetSample( + TrackInfo::TrackType aTrack, const TimeUnit& aFuzz, MediaResult& aResult) { + mTaskQueueCapability->AssertOnCurrentThread(); + AUTO_PROFILER_LABEL("TrackBuffersManager::GetSample", MEDIA_PLAYBACK); + auto& trackData = GetTracksData(aTrack); + const TrackBuffer& track = GetTrackBuffer(aTrack); + + aResult = NS_ERROR_DOM_MEDIA_WAITING_FOR_DATA; + + if (trackData.mNextGetSampleIndex.isSome()) { + if (trackData.mNextGetSampleIndex.ref() >= track.Length()) { + aResult = NS_ERROR_DOM_MEDIA_END_OF_STREAM; + return nullptr; + } + const MediaRawData* sample = GetSample( + aTrack, trackData.mNextGetSampleIndex.ref(), + trackData.mNextSampleTimecode, trackData.mNextSampleTime, aFuzz); + if (!sample) { + return nullptr; + } + + RefPtr<MediaRawData> p = sample->Clone(); + if (!p) { + aResult = MediaResult(NS_ERROR_OUT_OF_MEMORY, __func__); + return nullptr; + } + if (p->mKeyframe) { + UpdateEvictionIndex(trackData, trackData.mNextGetSampleIndex.ref()); + } + trackData.mNextGetSampleIndex.ref()++; + // Estimate decode timestamp and timestamp of the next sample. + TimeUnit nextSampleTimecode = sample->GetEndTimecode(); + TimeUnit nextSampleTime = sample->GetEndTime(); + const MediaRawData* nextSample = + GetSample(aTrack, trackData.mNextGetSampleIndex.ref(), + nextSampleTimecode, nextSampleTime, aFuzz); + if (nextSample) { + // We have a valid next sample, can use exact values. + trackData.mNextSampleTimecode = nextSample->mTimecode; + trackData.mNextSampleTime = nextSample->mTime; + } else { + // Next sample isn't available yet. Use estimates. + trackData.mNextSampleTimecode = nextSampleTimecode; + trackData.mNextSampleTime = nextSampleTime; + } + aResult = NS_OK; + return p.forget(); + } + + aResult = SetNextGetSampleIndexIfNeeded(aTrack, aFuzz); + + if (NS_FAILED(aResult)) { + return nullptr; + } + + MOZ_RELEASE_ASSERT(trackData.mNextGetSampleIndex.isSome() && + trackData.mNextGetSampleIndex.ref() < track.Length()); + const RefPtr<MediaRawData>& sample = + track[trackData.mNextGetSampleIndex.ref()]; + RefPtr<MediaRawData> p = sample->Clone(); + if (!p) { + // OOM + aResult = MediaResult(NS_ERROR_OUT_OF_MEMORY, __func__); + return nullptr; + } + MOZ_DIAGNOSTIC_ASSERT(p->HasValidTime()); + + // Find the previous keyframe to calculate the evictable amount. + uint32_t i = trackData.mNextGetSampleIndex.ref(); + for (; !track[i]->mKeyframe; i--) { + } + UpdateEvictionIndex(trackData, i); + + trackData.mNextGetSampleIndex.ref()++; + trackData.mNextSampleTimecode = sample->GetEndTimecode(); + trackData.mNextSampleTime = sample->GetEndTime(); + return p.forget(); +} + +int32_t TrackBuffersManager::FindCurrentPosition(TrackInfo::TrackType aTrack, + const TimeUnit& aFuzz) const { + MOZ_ASSERT(OnTaskQueue()); + auto& trackData = GetTracksData(aTrack); + const TrackBuffer& track = GetTrackBuffer(aTrack); + + // Perform an exact search first. + for (uint32_t i = 0; i < track.Length(); i++) { + const RefPtr<MediaRawData>& sample = track[i]; + TimeInterval sampleInterval{sample->mTimecode, sample->GetEndTimecode()}; + + if (sampleInterval.ContainsStrict(trackData.mNextSampleTimecode)) { + return i; + } + if (sampleInterval.mStart > trackData.mNextSampleTimecode) { + // Samples are ordered by timecode. There's no need to search + // any further. + break; + } + } + + for (uint32_t i = 0; i < track.Length(); i++) { + const RefPtr<MediaRawData>& sample = track[i]; + TimeInterval sampleInterval{sample->mTimecode, sample->GetEndTimecode(), + aFuzz}; + + if (sampleInterval.ContainsWithStrictEnd(trackData.mNextSampleTimecode)) { + return i; + } + if (sampleInterval.mStart - aFuzz > trackData.mNextSampleTimecode) { + // Samples are ordered by timecode. There's no need to search + // any further. + break; + } + } + + // We couldn't find our sample by decode timestamp. Attempt to find it using + // presentation timestamp. There will likely be small jerkiness. + for (uint32_t i = 0; i < track.Length(); i++) { + const RefPtr<MediaRawData>& sample = track[i]; + TimeInterval sampleInterval{sample->mTime, sample->GetEndTime(), aFuzz}; + + if (sampleInterval.ContainsWithStrictEnd(trackData.mNextSampleTimecode)) { + return i; + } + } + + // Still not found. + return -1; +} + +uint32_t TrackBuffersManager::Evictable(TrackInfo::TrackType aTrack) const { + MutexAutoLock mut(mMutex); + return GetTracksData(aTrack).mEvictionIndex.mEvictable; +} + +TimeUnit TrackBuffersManager::GetNextRandomAccessPoint( + TrackInfo::TrackType aTrack, const TimeUnit& aFuzz) { + mTaskQueueCapability->AssertOnCurrentThread(); + + // So first determine the current position in the track buffer if necessary. + if (NS_FAILED(SetNextGetSampleIndexIfNeeded(aTrack, aFuzz))) { + return TimeUnit::FromInfinity(); + } + + auto& trackData = GetTracksData(aTrack); + const TrackBuffersManager::TrackBuffer& track = GetTrackBuffer(aTrack); + + uint32_t i = trackData.mNextGetSampleIndex.ref(); + TimeUnit nextSampleTimecode = trackData.mNextSampleTimecode; + TimeUnit nextSampleTime = trackData.mNextSampleTime; + + for (; i < track.Length(); i++) { + const MediaRawData* sample = + GetSample(aTrack, i, nextSampleTimecode, nextSampleTime, aFuzz); + if (!sample) { + break; + } + if (sample->mKeyframe) { + return sample->mTime; + } + nextSampleTimecode = sample->GetEndTimecode(); + nextSampleTime = sample->GetEndTime(); + } + return TimeUnit::FromInfinity(); +} + +nsresult TrackBuffersManager::SetNextGetSampleIndexIfNeeded( + TrackInfo::TrackType aTrack, const TimeUnit& aFuzz) { + MOZ_ASSERT(OnTaskQueue()); + auto& trackData = GetTracksData(aTrack); + const TrackBuffer& track = GetTrackBuffer(aTrack); + + if (trackData.mNextGetSampleIndex.isSome()) { + // We already know the next GetSample index. + return NS_OK; + } + + if (!track.Length()) { + // There's nothing to find yet. + return NS_ERROR_DOM_MEDIA_END_OF_STREAM; + } + + if (trackData.mNextSampleTimecode == TimeUnit()) { + // First demux, get first sample. + trackData.mNextGetSampleIndex = Some(0u); + return NS_OK; + } + + if (trackData.mNextSampleTimecode > track.LastElement()->GetEndTimecode()) { + // The next element is past our last sample. We're done. + trackData.mNextGetSampleIndex = Some(uint32_t(track.Length())); + return NS_ERROR_DOM_MEDIA_END_OF_STREAM; + } + + int32_t pos = FindCurrentPosition(aTrack, aFuzz); + if (pos < 0) { + // Not found, must wait for more data. + MSE_DEBUG("Couldn't find sample (pts:%" PRId64 " dts:%" PRId64 ")", + trackData.mNextSampleTime.ToMicroseconds(), + trackData.mNextSampleTimecode.ToMicroseconds()); + return NS_ERROR_DOM_MEDIA_WAITING_FOR_DATA; + } + trackData.mNextGetSampleIndex = Some(uint32_t(pos)); + return NS_OK; +} + +void TrackBuffersManager::TrackData::AddSizeOfResources( + MediaSourceDecoder::ResourceSizes* aSizes) const { + for (const TrackBuffer& buffer : mBuffers) { + for (const MediaRawData* data : buffer) { + aSizes->mByteSize += data->SizeOfIncludingThis(aSizes->mMallocSizeOf); + } + } +} + +RefPtr<GenericPromise> TrackBuffersManager::RequestDebugInfo( + dom::TrackBuffersManagerDebugInfo& aInfo) const { + const RefPtr<TaskQueue> taskQueue = GetTaskQueueSafe(); + if (!taskQueue) { + return GenericPromise::CreateAndResolve(true, __func__); + } + if (!taskQueue->IsCurrentThreadIn()) { + // Run the request on the task queue if it's not already. + return InvokeAsync(taskQueue.get(), __func__, + [this, self = RefPtr{this}, &aInfo] { + return RequestDebugInfo(aInfo); + }); + } + mTaskQueueCapability->AssertOnCurrentThread(); + GetDebugInfo(aInfo); + return GenericPromise::CreateAndResolve(true, __func__); +} + +void TrackBuffersManager::GetDebugInfo( + dom::TrackBuffersManagerDebugInfo& aInfo) const { + MOZ_ASSERT(OnTaskQueue(), + "This shouldn't be called off the task queue because we're about " + "to touch a lot of data that is used on the task queue"); + CopyUTF8toUTF16(mType.Type().AsString(), aInfo.mType); + + if (HasAudio()) { + aInfo.mNextSampleTime = mAudioTracks.mNextSampleTime.ToSeconds(); + aInfo.mNumSamples = mAudioTracks.mBuffers[0].Length(); + aInfo.mBufferSize = mAudioTracks.mSizeBuffer; + aInfo.mEvictable = Evictable(TrackInfo::kAudioTrack); + aInfo.mNextGetSampleIndex = mAudioTracks.mNextGetSampleIndex.valueOr(-1); + aInfo.mNextInsertionIndex = mAudioTracks.mNextInsertionIndex.valueOr(-1); + media::TimeIntervals ranges = SafeBuffered(TrackInfo::kAudioTrack); + dom::Sequence<dom::BufferRange> items; + for (uint32_t i = 0; i < ranges.Length(); ++i) { + // dom::Sequence is a FallibleTArray + dom::BufferRange* range = items.AppendElement(fallible); + if (!range) { + break; + } + range->mStart = ranges.Start(i).ToSeconds(); + range->mEnd = ranges.End(i).ToSeconds(); + } + aInfo.mRanges = std::move(items); + } else if (HasVideo()) { + aInfo.mNextSampleTime = mVideoTracks.mNextSampleTime.ToSeconds(); + aInfo.mNumSamples = mVideoTracks.mBuffers[0].Length(); + aInfo.mBufferSize = mVideoTracks.mSizeBuffer; + aInfo.mEvictable = Evictable(TrackInfo::kVideoTrack); + aInfo.mNextGetSampleIndex = mVideoTracks.mNextGetSampleIndex.valueOr(-1); + aInfo.mNextInsertionIndex = mVideoTracks.mNextInsertionIndex.valueOr(-1); + media::TimeIntervals ranges = SafeBuffered(TrackInfo::kVideoTrack); + dom::Sequence<dom::BufferRange> items; + for (uint32_t i = 0; i < ranges.Length(); ++i) { + // dom::Sequence is a FallibleTArray + dom::BufferRange* range = items.AppendElement(fallible); + if (!range) { + break; + } + range->mStart = ranges.Start(i).ToSeconds(); + range->mEnd = ranges.End(i).ToSeconds(); + } + aInfo.mRanges = std::move(items); + } +} + +void TrackBuffersManager::AddSizeOfResources( + MediaSourceDecoder::ResourceSizes* aSizes) const { + mTaskQueueCapability->AssertOnCurrentThread(); + + if (mInputBuffer.isSome() && mInputBuffer->Buffer()) { + // mInputBuffer should be the sole owner of the underlying buffer, so this + // won't double count. + aSizes->mByteSize += mInputBuffer->Buffer()->ShallowSizeOfIncludingThis( + aSizes->mMallocSizeOf); + } + if (mInitData) { + aSizes->mByteSize += + mInitData->ShallowSizeOfIncludingThis(aSizes->mMallocSizeOf); + } + if (mPendingInputBuffer.isSome() && mPendingInputBuffer->Buffer()) { + // mPendingInputBuffer should be the sole owner of the underlying buffer, so + // this won't double count. + aSizes->mByteSize += + mPendingInputBuffer->Buffer()->ShallowSizeOfIncludingThis( + aSizes->mMallocSizeOf); + } + + mVideoTracks.AddSizeOfResources(aSizes); + mAudioTracks.AddSizeOfResources(aSizes); +} + +} // namespace mozilla +#undef MSE_DEBUG +#undef MSE_DEBUGV +#undef SAMPLE_DEBUG |