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2f58c785e9
MozReview-Commit-ID: AMMxMPkuYXk --HG-- extra : rebase_source : 438100efafb883c8cd67895657877da9fb6f54ce
103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef __FFmpegVideoDecoder_h__
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#define __FFmpegVideoDecoder_h__
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#include "FFmpegLibWrapper.h"
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#include "FFmpegDataDecoder.h"
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#include "SimpleMap.h"
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namespace mozilla
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{
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template <int V>
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class FFmpegVideoDecoder : public FFmpegDataDecoder<V>
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{
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};
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template <>
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class FFmpegVideoDecoder<LIBAV_VER> : public FFmpegDataDecoder<LIBAV_VER>
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{
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typedef mozilla::layers::Image Image;
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typedef mozilla::layers::ImageContainer ImageContainer;
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typedef SimpleMap<int64_t> DurationMap;
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public:
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FFmpegVideoDecoder(FFmpegLibWrapper* aLib, TaskQueue* aTaskQueue,
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const VideoInfo& aConfig,
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ImageContainer* aImageContainer,
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bool aLowLatency);
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virtual ~FFmpegVideoDecoder();
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RefPtr<InitPromise> Init() override;
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void InitCodecContext() override;
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const char* GetDescriptionName() const override
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{
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#ifdef USING_MOZFFVPX
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return "ffvpx video decoder";
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#else
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return "ffmpeg video decoder";
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#endif
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}
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ConversionRequired NeedsConversion() const override
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{
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return ConversionRequired::kNeedAVCC;
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}
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static AVCodecID GetCodecId(const nsACString& aMimeType);
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private:
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RefPtr<DecodePromise> ProcessDecode(MediaRawData* aSample) override;
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RefPtr<DecodePromise> ProcessDrain() override;
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RefPtr<FlushPromise> ProcessFlush() override;
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MediaResult DoDecode(MediaRawData* aSample, bool* aGotFrame,
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DecodedData& aResults);
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MediaResult DoDecode(MediaRawData* aSample, uint8_t* aData, int aSize,
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bool* aGotFrame, DecodedData& aResults);
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void OutputDelayedFrames();
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/**
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* This method allocates a buffer for FFmpeg's decoder, wrapped in an Image.
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* Currently it only supports Planar YUV420, which appears to be the only
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* non-hardware accelerated image format that FFmpeg's H264 decoder is
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* capable of outputting.
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*/
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int AllocateYUV420PVideoBuffer(AVCodecContext* aCodecContext,
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AVFrame* aFrame);
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RefPtr<ImageContainer> mImageContainer;
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VideoInfo mInfo;
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// Parser used for VP8 and VP9 decoding.
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AVCodecParserContext* mCodecParser;
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class PtsCorrectionContext
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{
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public:
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PtsCorrectionContext();
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int64_t GuessCorrectPts(int64_t aPts, int64_t aDts);
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void Reset();
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int64_t LastDts() const { return mLastDts; }
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private:
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int64_t mNumFaultyPts; /// Number of incorrect PTS values so far
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int64_t mNumFaultyDts; /// Number of incorrect DTS values so far
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int64_t mLastPts; /// PTS of the last frame
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int64_t mLastDts; /// DTS of the last frame
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};
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PtsCorrectionContext mPtsContext;
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int64_t mLastInputDts;
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DurationMap mDurationMap;
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const bool mLowLatency;
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};
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} // namespace mozilla
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#endif // __FFmpegVideoDecoder_h__
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