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Diffstat (limited to 'dom/media/platforms/ffmpeg/FFmpegAudioEncoder.h')
-rw-r--r-- | dom/media/platforms/ffmpeg/FFmpegAudioEncoder.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/dom/media/platforms/ffmpeg/FFmpegAudioEncoder.h b/dom/media/platforms/ffmpeg/FFmpegAudioEncoder.h new file mode 100644 index 0000000000..51b0bfa44e --- /dev/null +++ b/dom/media/platforms/ffmpeg/FFmpegAudioEncoder.h @@ -0,0 +1,70 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:set ts=2 sw=2 sts=2 et cindent: */ +/* 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/. */ + +#ifndef DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGAUDIOENCODER_H_ +#define DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGAUDIOENCODER_H_ + +#include "FFmpegDataEncoder.h" +#include "FFmpegLibWrapper.h" +#include "PlatformEncoderModule.h" +#include "TimedPacketizer.h" + +// This must be the last header included +#include "FFmpegLibs.h" +#include "speex/speex_resampler.h" + +namespace mozilla { + +template <int V> +class FFmpegAudioEncoder : public MediaDataEncoder {}; + +template <> +class FFmpegAudioEncoder<LIBAV_VER> : public FFmpegDataEncoder<LIBAV_VER> { + public: + FFmpegAudioEncoder(const FFmpegLibWrapper* aLib, AVCodecID aCodecID, + const RefPtr<TaskQueue>& aTaskQueue, + const EncoderConfig& aConfig); + + nsCString GetDescriptionName() const override; + + protected: + // Methods only called on mTaskQueue. + virtual nsresult InitSpecific() override; +#if LIBAVCODEC_VERSION_MAJOR >= 58 + Result<EncodedData, nsresult> EncodeOnePacket(Span<float> aSamples, + media::TimeUnit aPts); + Result<EncodedData, nsresult> EncodeInputWithModernAPIs( + RefPtr<const MediaData> aSample) override; + Result<MediaDataEncoder::EncodedData, nsresult> DrainWithModernAPIs() + override; +#endif + virtual RefPtr<MediaRawData> ToMediaRawData(AVPacket* aPacket) override; + Result<already_AddRefed<MediaByteBuffer>, nsresult> GetExtraData( + AVPacket* aPacket) override; + // Most audio codecs (except PCM) require a very specific frame size. + Maybe<TimedPacketizer<float, float>> mPacketizer; + // A temporary buffer kept around for shuffling audio frames, resampling, + // packetization, etc. + nsTArray<float> mTempBuffer; + // The pts of the first packet this encoder has seen, to be able to properly + // mark encoder delay as such. + media::TimeUnit mFirstPacketPts{media::TimeUnit::Invalid()}; + struct ResamplerDestroy { + void operator()(SpeexResamplerState* aResampler); + }; + // Rate at which this instance has been configured, which might be different + // from the rate the underlying encoder is running at. + int mInputSampleRate = 0; + UniquePtr<SpeexResamplerState, ResamplerDestroy> mResampler; + uint64_t mPacketsDelivered = 0; + // Threshold under which a packet isn't returned to the encoder user, + // because it is known to be silent and DTX is enabled. + int mDtxThreshold = 0; +}; + +} // namespace mozilla + +#endif // DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGAUDIOENCODER_H_ |