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