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/* -*- 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 __FFmpegVideoDecoder_h__
#define __FFmpegVideoDecoder_h__
#include "ImageContainer.h"
#include "FFmpegDataDecoder.h"
#include "FFmpegLibWrapper.h"
#include "PerformanceRecorder.h"
#include "SimpleMap.h"
#include "mozilla/ScopeExit.h"
#include "nsTHashSet.h"
#if LIBAVCODEC_VERSION_MAJOR >= 57 && LIBAVUTIL_VERSION_MAJOR >= 56
# include "mozilla/layers/TextureClient.h"
#endif
#ifdef MOZ_USE_HWDECODE
# include "FFmpegVideoFramePool.h"
#endif
struct _VADRMPRIMESurfaceDescriptor;
typedef struct _VADRMPRIMESurfaceDescriptor VADRMPRIMESurfaceDescriptor;
namespace mozilla {
class ImageBufferWrapper;
template <int V>
class FFmpegVideoDecoder : public FFmpegDataDecoder<V> {};
template <>
class FFmpegVideoDecoder<LIBAV_VER>;
DDLoggedTypeNameAndBase(FFmpegVideoDecoder<LIBAV_VER>,
FFmpegDataDecoder<LIBAV_VER>);
template <>
class FFmpegVideoDecoder<LIBAV_VER>
: public FFmpegDataDecoder<LIBAV_VER>,
public DecoderDoctorLifeLogger<FFmpegVideoDecoder<LIBAV_VER>> {
typedef mozilla::layers::Image Image;
typedef mozilla::layers::ImageContainer ImageContainer;
typedef mozilla::layers::KnowsCompositor KnowsCompositor;
typedef SimpleMap<int64_t, int64_t, ThreadSafePolicy> DurationMap;
public:
FFmpegVideoDecoder(FFmpegLibWrapper* aLib, const VideoInfo& aConfig,
KnowsCompositor* aAllocator,
ImageContainer* aImageContainer, bool aLowLatency,
bool aDisableHardwareDecoding,
Maybe<TrackingId> aTrackingId);
~FFmpegVideoDecoder();
RefPtr<InitPromise> Init() override;
void InitCodecContext() MOZ_REQUIRES(sMutex) override;
nsCString GetDescriptionName() const override {
#ifdef USING_MOZFFVPX
return "ffvpx video decoder"_ns;
#else
return "ffmpeg video decoder"_ns;
#endif
}
nsCString GetCodecName() const override;
ConversionRequired NeedsConversion() const override {
return ConversionRequired::kNeedAVCC;
}
static AVCodecID GetCodecId(const nsACString& aMimeType);
#if LIBAVCODEC_VERSION_MAJOR >= 57 && LIBAVUTIL_VERSION_MAJOR >= 56
int GetVideoBuffer(struct AVCodecContext* aCodecContext, AVFrame* aFrame,
int aFlags);
int GetVideoBufferDefault(struct AVCodecContext* aCodecContext,
AVFrame* aFrame, int aFlags) {
mIsUsingShmemBufferForDecode = Some(false);
return mLib->avcodec_default_get_buffer2(aCodecContext, aFrame, aFlags);
}
void ReleaseAllocatedImage(ImageBufferWrapper* aImage) {
mAllocatedImages.Remove(aImage);
}
#endif
private:
RefPtr<FlushPromise> ProcessFlush() override;
void ProcessShutdown() override;
MediaResult DoDecode(MediaRawData* aSample, uint8_t* aData, int aSize,
bool* aGotFrame, DecodedData& aResults) override;
void OutputDelayedFrames();
bool NeedParser() const override {
return
#if LIBAVCODEC_VERSION_MAJOR >= 58
false;
#else
# if LIBAVCODEC_VERSION_MAJOR >= 55
mCodecID == AV_CODEC_ID_VP9 ||
# endif
mCodecID == AV_CODEC_ID_VP8;
#endif
}
gfx::YUVColorSpace GetFrameColorSpace() const;
gfx::ColorSpace2 GetFrameColorPrimaries() const;
gfx::ColorRange GetFrameColorRange() const;
MediaResult CreateImage(int64_t aOffset, int64_t aPts, int64_t aDuration,
MediaDataDecoder::DecodedData& aResults) const;
bool IsHardwareAccelerated(nsACString& aFailureReason) const override;
bool IsHardwareAccelerated() const {
nsAutoCString dummy;
return IsHardwareAccelerated(dummy);
}
#if LIBAVCODEC_VERSION_MAJOR >= 57 && LIBAVUTIL_VERSION_MAJOR >= 56
layers::TextureClient* AllocateTextureClientForImage(
struct AVCodecContext* aCodecContext, layers::PlanarYCbCrImage* aImage);
gfx::IntSize GetAlignmentVideoFrameSize(struct AVCodecContext* aCodecContext,
int32_t aWidth,
int32_t aHeight) const;
#endif
#ifdef MOZ_USE_HWDECODE
void InitHWDecodingPrefs();
MediaResult InitVAAPIDecoder();
MediaResult InitV4L2Decoder();
bool CreateVAAPIDeviceContext();
void InitHWCodecContext(bool aUsingV4L2);
AVCodec* FindVAAPICodec();
bool GetVAAPISurfaceDescriptor(VADRMPRIMESurfaceDescriptor* aVaDesc);
void AddAcceleratedFormats(nsTArray<AVCodecID>& aCodecList,
AVCodecID aCodecID, AVVAAPIHWConfig* hwconfig);
nsTArray<AVCodecID> GetAcceleratedFormats();
bool IsFormatAccelerated(AVCodecID aCodecID) const;
MediaResult CreateImageVAAPI(int64_t aOffset, int64_t aPts, int64_t aDuration,
MediaDataDecoder::DecodedData& aResults);
MediaResult CreateImageV4L2(int64_t aOffset, int64_t aPts, int64_t aDuration,
MediaDataDecoder::DecodedData& aResults);
void AdjustHWDecodeLogging();
#endif
#ifdef MOZ_USE_HWDECODE
AVBufferRef* mVAAPIDeviceContext;
bool mUsingV4L2;
bool mEnableHardwareDecoding;
VADisplay mDisplay;
UniquePtr<VideoFramePool<LIBAV_VER>> mVideoFramePool;
static nsTArray<AVCodecID> mAcceleratedFormats;
#endif
RefPtr<KnowsCompositor> mImageAllocator;
RefPtr<ImageContainer> mImageContainer;
VideoInfo mInfo;
#if LIBAVCODEC_VERSION_MAJOR >= 58
class DecodeStats {
public:
void DecodeStart();
void UpdateDecodeTimes(const AVFrame* aFrame);
bool IsDecodingSlow() const;
private:
uint32_t mDecodedFrames = 0;
float mAverageFrameDecodeTime = 0;
float mAverageFrameDuration = 0;
// Number of delayed frames until we consider decoding as slow.
const uint32_t mMaxLateDecodedFrames = 15;
// How many frames is decoded behind its pts time, i.e. video decode lags.
uint32_t mDecodedFramesLate = 0;
// Reset mDecodedFramesLate every 3 seconds of correct playback.
const uint32_t mDelayedFrameReset = 3000;
uint32_t mLastDelayedFrameNum = 0;
TimeStamp mDecodeStart;
};
DecodeStats mDecodeStats;
#endif
#if LIBAVCODEC_VERSION_MAJOR < 58
class PtsCorrectionContext {
public:
PtsCorrectionContext();
int64_t GuessCorrectPts(int64_t aPts, int64_t aDts);
void Reset();
int64_t LastDts() const { return mLastDts; }
private:
int64_t mNumFaultyPts; /// Number of incorrect PTS values so far
int64_t mNumFaultyDts; /// Number of incorrect DTS values so far
int64_t mLastPts; /// PTS of the last frame
int64_t mLastDts; /// DTS of the last frame
};
PtsCorrectionContext mPtsContext;
DurationMap mDurationMap;
#endif
const bool mLowLatency;
const Maybe<TrackingId> mTrackingId;
PerformanceRecorderMulti<DecodeStage> mPerformanceRecorder;
PerformanceRecorderMulti<DecodeStage> mPerformanceRecorder2;
// True if we're allocating shmem for ffmpeg decode buffer.
Maybe<Atomic<bool>> mIsUsingShmemBufferForDecode;
#if LIBAVCODEC_VERSION_MAJOR >= 57 && LIBAVUTIL_VERSION_MAJOR >= 56
// These images are buffers for ffmpeg in order to store decoded data when
// using custom allocator for decoding. We want to explictly track all images
// we allocate to ensure that we won't leak any of them.
//
// All images tracked by mAllocatedImages are used by ffmpeg,
// i.e. ffmpeg holds a reference to them and uses them in
// its internal decoding queue.
//
// When an image is removed from mAllocatedImages it's recycled
// for a new frame by AllocateTextureClientForImage() in
// FFmpegVideoDecoder::GetVideoBuffer().
nsTHashSet<RefPtr<ImageBufferWrapper>> mAllocatedImages;
#endif
};
#if LIBAVCODEC_VERSION_MAJOR >= 57 && LIBAVUTIL_VERSION_MAJOR >= 56
class ImageBufferWrapper final {
public:
typedef mozilla::layers::Image Image;
typedef mozilla::layers::PlanarYCbCrImage PlanarYCbCrImage;
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ImageBufferWrapper)
ImageBufferWrapper(Image* aImage, void* aDecoder)
: mImage(aImage), mDecoder(aDecoder) {
MOZ_ASSERT(aImage);
MOZ_ASSERT(mDecoder);
}
Image* AsImage() { return mImage; }
void ReleaseBuffer() {
auto* decoder = static_cast<FFmpegVideoDecoder<LIBAV_VER>*>(mDecoder);
decoder->ReleaseAllocatedImage(this);
}
private:
~ImageBufferWrapper() = default;
const RefPtr<Image> mImage;
void* const MOZ_NON_OWNING_REF mDecoder;
};
#endif
} // namespace mozilla
#endif // __FFmpegVideoDecoder_h__
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