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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /dom/media/platforms/ffmpeg/FFmpegVideoDecoder.h | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/media/platforms/ffmpeg/FFmpegVideoDecoder.h')
-rw-r--r-- | dom/media/platforms/ffmpeg/FFmpegVideoDecoder.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/dom/media/platforms/ffmpeg/FFmpegVideoDecoder.h b/dom/media/platforms/ffmpeg/FFmpegVideoDecoder.h new file mode 100644 index 000000000..786df0da1 --- /dev/null +++ b/dom/media/platforms/ffmpeg/FFmpegVideoDecoder.h @@ -0,0 +1,127 @@ +/* -*- 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 "FFmpegLibWrapper.h" +#include "FFmpegDataDecoder.h" +#include "mozilla/Pair.h" +#include "nsTArray.h" + +namespace mozilla +{ + +template <int V> +class FFmpegVideoDecoder : public FFmpegDataDecoder<V> +{ +}; + +template <> +class FFmpegVideoDecoder<LIBAV_VER> : public FFmpegDataDecoder<LIBAV_VER> +{ + typedef mozilla::layers::Image Image; + typedef mozilla::layers::ImageContainer ImageContainer; + +public: + FFmpegVideoDecoder(FFmpegLibWrapper* aLib, TaskQueue* aTaskQueue, + MediaDataDecoderCallback* aCallback, + const VideoInfo& aConfig, + ImageContainer* aImageContainer); + virtual ~FFmpegVideoDecoder(); + + RefPtr<InitPromise> Init() override; + void InitCodecContext() override; + const char* GetDescriptionName() const override + { +#ifdef USING_MOZFFVPX + return "ffvpx video decoder"; +#else + return "ffmpeg video decoder"; +#endif + } + static AVCodecID GetCodecId(const nsACString& aMimeType); + +private: + MediaResult DoDecode(MediaRawData* aSample) override; + MediaResult DoDecode(MediaRawData* aSample, bool* aGotFrame); + MediaResult DoDecode(MediaRawData* aSample, uint8_t* aData, int aSize, bool* aGotFrame); + void ProcessDrain() override; + void ProcessFlush() override; + void OutputDelayedFrames(); + + /** + * This method allocates a buffer for FFmpeg's decoder, wrapped in an Image. + * Currently it only supports Planar YUV420, which appears to be the only + * non-hardware accelerated image format that FFmpeg's H264 decoder is + * capable of outputting. + */ + int AllocateYUV420PVideoBuffer(AVCodecContext* aCodecContext, + AVFrame* aFrame); + + RefPtr<ImageContainer> mImageContainer; + VideoInfo mInfo; + + // Parser used for VP8 and VP9 decoding. + AVCodecParserContext* mCodecParser; + + 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; + int64_t mLastInputDts; + + class DurationMap { + public: + typedef Pair<int64_t, int64_t> DurationElement; + + // Insert Key and Duration pair at the end of our map. + void Insert(int64_t aKey, int64_t aDuration) + { + mMap.AppendElement(MakePair(aKey, aDuration)); + } + // Sets aDuration matching aKey and remove it from the map if found. + // The element returned is the first one found. + // Returns true if found, false otherwise. + bool Find(int64_t aKey, int64_t& aDuration) + { + for (uint32_t i = 0; i < mMap.Length(); i++) { + DurationElement& element = mMap[i]; + if (element.first() == aKey) { + aDuration = element.second(); + mMap.RemoveElementAt(i); + return true; + } + } + return false; + } + // Remove all elements of the map. + void Clear() + { + mMap.Clear(); + } + + private: + AutoTArray<DurationElement, 16> mMap; + }; + + DurationMap mDurationMap; +}; + +} // namespace mozilla + +#endif // __FFmpegVideoDecoder_h__ |