gecko/dom/media/webm/IntelWebMVideoDecoder.h
Joe Olivas ca455e0705 Bug 922314 - Add support for decoding VPx via MediaFoundation on Windows. r=cpearce,kinetik
Refactor WebMReader's VPx decoding out to SoftwareWebMVideoDecoder and introduce a new IntelWebMVideoDecoder that uses the MediaFoundation/MFT backend to decode VPx when the requisite hardware and software is available.
2014-11-11 16:30:52 +13:00

92 lines
2.5 KiB
C++

/* -*- 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/. */
#if !defined(IntelWebMVideoDecoder_h_)
#define IntelWebMVideoDecoder_h_
#include <stdint.h>
#include "WebMReader.h"
#include "nsAutoPtr.h"
#include "PlatformDecoderModule.h"
#include "mozilla/Monitor.h"
#include "mp4_demuxer/mp4_demuxer.h"
#include "mp4_demuxer/DecoderData.h"
class MediaTaskQueue;
namespace mozilla {
class VP8Sample;
typedef std::deque<VP8Sample*> VP8SampleQueue;
class IntelWebMVideoDecoder : public WebMVideoDecoder, public MediaDataDecoderCallback
{
public:
static WebMVideoDecoder* Create(WebMReader* aReader);
virtual nsresult Init(unsigned int aWidth, unsigned int aHeight) MOZ_OVERRIDE;
virtual nsresult Flush() MOZ_OVERRIDE;
virtual void Shutdown() MOZ_OVERRIDE;
virtual bool DecodeVideoFrame(bool &aKeyframeSkip,
int64_t aTimeThreshold) MOZ_OVERRIDE;
virtual void Output(MediaData* aSample) MOZ_OVERRIDE;
virtual void DrainComplete() MOZ_OVERRIDE;
virtual void InputExhausted() MOZ_OVERRIDE;
virtual void Error() MOZ_OVERRIDE;
IntelWebMVideoDecoder(WebMReader* aReader);
~IntelWebMVideoDecoder();
private:
void InitLayersBackendType();
bool Decode();
bool Demux(nsAutoPtr<VP8Sample>& aSample, bool* aEOS);
bool SkipVideoDemuxToNextKeyFrame(int64_t aTimeThreshold, uint32_t& parsed);
bool IsSupportedVideoMimeType(const char* aMimeType);
VP8Sample* PopSample();
nsRefPtr<WebMReader> mReader;
nsAutoPtr<PlatformDecoderModule> mPlatform;
nsRefPtr<MediaDataDecoder> mMediaDataDecoder;
// TaskQueue on which decoder can choose to decode.
// Only non-null up until the decoder is created.
nsRefPtr<MediaTaskQueue> mTaskQueue;
// Monitor that protects all non-threadsafe state; the primitives
// that follow.
Monitor mMonitor;
nsAutoPtr<mp4_demuxer::VideoDecoderConfig> mDecoderConfig;
VP8SampleQueue mSampleQueue;
nsAutoPtr<VP8Sample> mQueuedVideoSample;
uint64_t mNumSamplesInput;
uint64_t mNumSamplesOutput;
uint64_t mLastReportedNumDecodedFrames;
uint32_t mDecodeAhead;
// Whether this stream exists in the media.
bool mInputExhausted;
bool mDrainComplete;
bool mError;
bool mEOS;
bool mIsFlushing;
};
} // namespace mozilla
#endif