зеркало из https://github.com/mozilla/gecko-dev.git
68 строки
2.3 KiB
C++
68 строки
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 MediaDecoderReaderWrapper_h_
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#define MediaDecoderReaderWrapper_h_
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#include "mozilla/AbstractThread.h"
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#include "mozilla/RefPtr.h"
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#include "nsISupportsImpl.h"
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#include "MediaDecoderReader.h"
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namespace mozilla {
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class StartTimeRendezvous;
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typedef MozPromise<bool, bool, /* isExclusive = */ false> HaveStartTimePromise;
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/**
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* A wrapper around MediaDecoderReader to offset the timestamps of Audio/Video
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* samples by the start time to ensure MDSM can always assume zero start time.
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* It also adjusts the seek target passed to Seek() to ensure correct seek time
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* is passed to the underlying reader.
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*/
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class MediaDecoderReaderWrapper {
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typedef MediaDecoderReader::MetadataPromise MetadataPromise;
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typedef MediaDecoderReader::AudioDataPromise AudioDataPromise;
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typedef MediaDecoderReader::VideoDataPromise VideoDataPromise;
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typedef MediaDecoderReader::SeekPromise SeekPromise;
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MediaDecoderReaderWrapper);
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public:
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MediaDecoderReaderWrapper(bool aIsRealTime,
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AbstractThread* aOwnerThread,
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MediaDecoderReader* aReader);
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media::TimeUnit StartTime() const;
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RefPtr<MetadataPromise> ReadMetadata();
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RefPtr<HaveStartTimePromise> AwaitStartTime();
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RefPtr<AudioDataPromise> RequestAudioData();
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RefPtr<VideoDataPromise> RequestVideoData(bool aSkipToNextKeyframe,
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media::TimeUnit aTimeThreshold);
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RefPtr<SeekPromise> Seek(SeekTarget aTarget, media::TimeUnit aEndTime);
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void Shutdown();
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private:
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~MediaDecoderReaderWrapper();
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void OnMetadataRead(MetadataHolder* aMetadata);
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void OnMetadataNotRead() {}
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void OnSampleDecoded(MediaData* aSample);
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void OnNotDecoded() {}
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const bool mForceZeroStartTime;
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const RefPtr<AbstractThread> mOwnerThread;
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const RefPtr<MediaDecoderReader> mReader;
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bool mShutdown = false;
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RefPtr<StartTimeRendezvous> mStartTimeRendezvous;
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};
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} // namespace mozilla
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#endif // MediaDecoderReaderWrapper_h_
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