tenfourfox/dom/media/platforms/wrappers/H264Converter.h
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

72 lines
2.6 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/. */
#ifndef mozilla_H264Converter_h
#define mozilla_H264Converter_h
#include "PlatformDecoderModule.h"
namespace mozilla {
// H264Converter is a MediaDataDecoder wrapper used to ensure that
// only AVCC or AnnexB is fed to the underlying MediaDataDecoder.
// The H264Converter allows playback of content where the SPS NAL may not be
// provided in the init segment (e.g. AVC3 or Annex B)
// H264Converter will monitor the input data, and will delay creation of the
// MediaDataDecoder until a SPS and PPS NALs have been extracted.
class H264Converter : public MediaDataDecoder {
public:
H264Converter(PlatformDecoderModule* aPDM,
const VideoInfo& aConfig,
layers::LayersBackend aLayersBackend,
layers::ImageContainer* aImageContainer,
FlushableTaskQueue* aVideoTaskQueue,
MediaDataDecoderCallback* aCallback);
virtual ~H264Converter();
RefPtr<InitPromise> Init() override;
nsresult Input(MediaRawData* aSample) override;
nsresult Flush() override;
nsresult Drain() override;
nsresult Shutdown() override;
bool IsHardwareAccelerated(nsACString& aFailureReason) const override;
// Return true if mimetype is H.264.
static bool IsH264(const TrackInfo& aConfig);
nsresult GetLastError() const { return mLastError; }
private:
// Will create the required MediaDataDecoder if need AVCC and we have a SPS NAL.
// Returns NS_ERROR_FAILURE if error is permanent and can't be recovered and
// will set mError accordingly.
nsresult CreateDecoder();
nsresult CreateDecoderAndInit(MediaRawData* aSample);
nsresult CheckForSPSChange(MediaRawData* aSample);
void UpdateConfigFromExtraData(MediaByteBuffer* aExtraData);
void OnDecoderInitDone(const TrackType aTrackType);
void OnDecoderInitFailed(MediaDataDecoder::DecoderFailureReason aReason);
RefPtr<PlatformDecoderModule> mPDM;
VideoInfo mOriginalConfig;
VideoInfo mCurrentConfig;
layers::LayersBackend mLayersBackend;
RefPtr<layers::ImageContainer> mImageContainer;
RefPtr<FlushableTaskQueue> mVideoTaskQueue;
nsTArray<RefPtr<MediaRawData>> mMediaRawSamples;
MediaDataDecoderCallback* mCallback;
RefPtr<MediaDataDecoder> mDecoder;
MozPromiseRequestHolder<InitPromise> mInitPromiseRequest;
bool mNeedAVCC;
nsresult mLastError;
};
} // namespace mozilla
#endif // mozilla_H264Converter_h