145 lines
5.2 KiB
C++
145 lines
5.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "mozilla/Variant.h"
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#include "nsISupportsImpl.h"
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#include "MediaDecoderReader.h"
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#include "MediaEventSource.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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typedef Variant<MediaData*, MediaResult> AudioCallbackData;
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typedef Variant<Tuple<MediaData*, TimeStamp>, MediaResult> VideoCallbackData;
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typedef Variant<MediaData::Type, WaitForDataRejectValue> WaitCallbackData;
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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::MediaDataPromise MediaDataPromise;
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typedef MediaDecoderReader::SeekPromise SeekPromise;
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typedef MediaDecoderReader::WaitForDataPromise WaitForDataPromise;
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typedef MediaDecoderReader::BufferedUpdatePromise BufferedUpdatePromise;
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typedef MediaDecoderReader::TrackSet TrackSet;
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MediaDecoderReaderWrapper);
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private:
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MediaCallbackExc<AudioCallbackData> mAudioCallback;
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MediaCallbackExc<VideoCallbackData> mVideoCallback;
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MediaCallbackExc<WaitCallbackData> mAudioWaitCallback;
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MediaCallbackExc<WaitCallbackData> mVideoWaitCallback;
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public:
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MediaDecoderReaderWrapper(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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decltype(mAudioCallback)& AudioCallback() { return mAudioCallback; }
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decltype(mVideoCallback)& VideoCallback() { return mVideoCallback; }
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decltype(mAudioWaitCallback)& AudioWaitCallback() { return mAudioWaitCallback; }
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decltype(mVideoWaitCallback)& VideoWaitCallback() { return mVideoWaitCallback; }
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// NOTE: please set callbacks before requesting audio/video data!
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void RequestAudioData();
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void RequestVideoData(bool aSkipToNextKeyframe, media::TimeUnit aTimeThreshold);
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// NOTE: please set callbacks before invoking WaitForData()!
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void WaitForData(MediaData::Type aType);
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bool IsRequestingAudioData() const;
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bool IsRequestingVideoData() const;
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bool IsWaitingAudioData() const;
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bool IsWaitingVideoData() const;
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RefPtr<SeekPromise> Seek(SeekTarget aTarget, media::TimeUnit aEndTime);
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RefPtr<BufferedUpdatePromise> UpdateBufferedWithPromise();
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RefPtr<ShutdownPromise> Shutdown();
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void ReleaseResources();
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void SetIdle();
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void ResetDecode(TrackSet aTracks);
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nsresult Init() { return mReader->Init(); }
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bool IsWaitForDataSupported() const { return mReader->IsWaitForDataSupported(); }
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bool IsAsync() const { return mReader->IsAsync(); }
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bool UseBufferingHeuristics() const { return mReader->UseBufferingHeuristics(); }
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bool ForceZeroStartTime() const { return mReader->ForceZeroStartTime(); }
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bool VideoIsHardwareAccelerated() const {
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return mReader->VideoIsHardwareAccelerated();
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}
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TimedMetadataEventSource& TimedMetadataEvent() {
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return mReader->TimedMetadataEvent();
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}
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MediaEventSource<void>& OnMediaNotSeekable() {
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return mReader->OnMediaNotSeekable();
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}
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size_t SizeOfVideoQueueInBytes() const {
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return mReader->SizeOfVideoQueueInBytes();
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}
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size_t SizeOfAudioQueueInBytes() const {
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return mReader->SizeOfAudioQueueInBytes();
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}
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size_t SizeOfAudioQueueInFrames() const {
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return mReader->SizeOfAudioQueueInFrames();
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}
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size_t SizeOfVideoQueueInFrames() const {
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return mReader->SizeOfVideoQueueInFrames();
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}
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void ReadUpdatedMetadata(MediaInfo* aInfo) {
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mReader->ReadUpdatedMetadata(aInfo);
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}
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AbstractCanonical<media::TimeIntervals>* CanonicalBuffered() {
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return mReader->CanonicalBuffered();
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}
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#ifdef MOZ_EME
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void SetCDMProxy(CDMProxy* aProxy) { mReader->SetCDMProxy(aProxy); }
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#endif
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void SetVideoBlankDecode(bool aIsBlankDecode);
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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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MediaCallbackExc<WaitCallbackData>& WaitCallbackRef(MediaData::Type aType);
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MozPromiseRequestHolder<WaitForDataPromise>& WaitRequestRef(MediaData::Type aType);
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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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MozPromiseRequestHolder<MediaDataPromise> mAudioDataRequest;
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MozPromiseRequestHolder<MediaDataPromise> mVideoDataRequest;
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MozPromiseRequestHolder<WaitForDataPromise> mAudioWaitRequest;
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MozPromiseRequestHolder<WaitForDataPromise> mVideoWaitRequest;
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};
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} // namespace mozilla
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#endif // MediaDecoderReaderWrapper_h_
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