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122 lines
3.8 KiB
C++
122 lines
3.8 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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#if !defined(WMFReader_h_)
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#define WMFReader_h_
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#include "WMF.h"
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#include "MediaDecoderReader.h"
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#include "nsAutoPtr.h"
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#include "mozilla/RefPtr.h"
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#include "nsRect.h"
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namespace mozilla {
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class WMFByteStream;
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class WMFSourceReaderCallback;
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class DXVA2Manager;
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namespace dom {
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class TimeRanges;
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}
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// Decoder backend for reading H.264/AAC in MP4/M4A, and MP3 files using
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// Windows Media Foundation.
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class WMFReader : public MediaDecoderReader
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{
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public:
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WMFReader(AbstractMediaDecoder* aDecoder);
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virtual ~WMFReader();
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nsresult Init(MediaDecoderReader* aCloneDonor) MOZ_OVERRIDE;
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bool DecodeAudioData() MOZ_OVERRIDE;
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bool DecodeVideoFrame(bool &aKeyframeSkip,
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int64_t aTimeThreshold) MOZ_OVERRIDE;
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bool HasAudio() MOZ_OVERRIDE;
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bool HasVideo() MOZ_OVERRIDE;
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nsresult ReadMetadata(VideoInfo* aInfo,
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MetadataTags** aTags) MOZ_OVERRIDE;
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nsresult Seek(int64_t aTime,
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int64_t aStartTime,
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int64_t aEndTime,
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int64_t aCurrentTime) MOZ_OVERRIDE;
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nsresult GetBuffered(mozilla::dom::TimeRanges* aBuffered,
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int64_t aStartTime) MOZ_OVERRIDE;
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void OnDecodeThreadStart() MOZ_OVERRIDE;
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void OnDecodeThreadFinish() MOZ_OVERRIDE;
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private:
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HRESULT ConfigureAudioDecoder();
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HRESULT ConfigureVideoDecoder();
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HRESULT ConfigureVideoFrameGeometry(IMFMediaType* aMediaType);
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void GetSupportedAudioCodecs(const GUID** aCodecs, uint32_t* aNumCodecs);
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HRESULT CreateBasicVideoFrame(IMFSample* aSample,
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int64_t aTimestampUsecs,
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int64_t aDurationUsecs,
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int64_t aOffsetBytes,
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VideoData** aOutVideoData);
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HRESULT CreateD3DVideoFrame(IMFSample* aSample,
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int64_t aTimestampUsecs,
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int64_t aDurationUsecs,
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int64_t aOffsetBytes,
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VideoData** aOutVideoData);
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// Attempt to initialize DXVA. Returns true on success.
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bool InitializeDXVA();
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RefPtr<IMFSourceReader> mSourceReader;
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RefPtr<WMFByteStream> mByteStream;
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RefPtr<WMFSourceReaderCallback> mSourceReaderCallback;
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nsAutoPtr<DXVA2Manager> mDXVA2Manager;
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// Region inside the video frame that makes up the picture. Pixels outside
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// of this region should not be rendered.
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nsIntRect mPictureRegion;
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uint32_t mAudioChannels;
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uint32_t mAudioBytesPerSample;
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uint32_t mAudioRate;
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uint32_t mVideoWidth;
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uint32_t mVideoHeight;
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uint32_t mVideoStride;
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// The offset, in audio frames, at which playback started since the
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// last discontinuity.
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int64_t mAudioFrameOffset;
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// The number of audio frames that we've played since the last
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// discontinuity.
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int64_t mAudioFrameSum;
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// True if we need to re-initialize mAudioFrameOffset and mAudioFrameSum
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// from the next audio packet we decode. This happens after a seek, since
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// WMF doesn't mark a stream as having a discontinuity after a seek(0).
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bool mMustRecaptureAudioPosition;
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bool mHasAudio;
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bool mHasVideo;
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bool mUseHwAccel;
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// We can't call WMFDecoder::IsMP3Supported() on non-main threads, since it
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// checks a pref, so we cache its value in mIsMP3Enabled and use that on
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// the decode thread.
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const bool mIsMP3Enabled;
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bool mCOMInitialized;
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};
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} // namespace mozilla
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#endif
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