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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 MediaDecoderReaderWrapper_h_
#define MediaDecoderReaderWrapper_h_
#include "mozilla/AbstractThread.h"
#include "mozilla/RefPtr.h"
#include "mozilla/Variant.h"
#include "nsISupportsImpl.h"
#include "MediaDecoderReader.h"
#include "MediaEventSource.h"
namespace mozilla {
class StartTimeRendezvous;
typedef MozPromise<bool, bool, /* isExclusive = */ false> HaveStartTimePromise;
typedef Variant<MediaData*, MediaResult> AudioCallbackData;
typedef Variant<Tuple<MediaData*, TimeStamp>, MediaResult> VideoCallbackData;
typedef Variant<MediaData::Type, WaitForDataRejectValue> WaitCallbackData;
/**
* A wrapper around MediaDecoderReader to offset the timestamps of Audio/Video
* samples by the start time to ensure MDSM can always assume zero start time.
* It also adjusts the seek target passed to Seek() to ensure correct seek time
* is passed to the underlying reader.
*/
class MediaDecoderReaderWrapper {
typedef MediaDecoderReader::MetadataPromise MetadataPromise;
typedef MediaDecoderReader::MediaDataPromise MediaDataPromise;
typedef MediaDecoderReader::SeekPromise SeekPromise;
typedef MediaDecoderReader::WaitForDataPromise WaitForDataPromise;
typedef MediaDecoderReader::BufferedUpdatePromise BufferedUpdatePromise;
typedef MediaDecoderReader::TrackSet TrackSet;
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MediaDecoderReaderWrapper);
private:
MediaCallbackExc<AudioCallbackData> mAudioCallback;
MediaCallbackExc<VideoCallbackData> mVideoCallback;
MediaCallbackExc<WaitCallbackData> mAudioWaitCallback;
MediaCallbackExc<WaitCallbackData> mVideoWaitCallback;
public:
MediaDecoderReaderWrapper(AbstractThread* aOwnerThread,
MediaDecoderReader* aReader);
media::TimeUnit StartTime() const;
RefPtr<MetadataPromise> ReadMetadata();
RefPtr<HaveStartTimePromise> AwaitStartTime();
decltype(mAudioCallback)& AudioCallback() { return mAudioCallback; }
decltype(mVideoCallback)& VideoCallback() { return mVideoCallback; }
decltype(mAudioWaitCallback)& AudioWaitCallback() { return mAudioWaitCallback; }
decltype(mVideoWaitCallback)& VideoWaitCallback() { return mVideoWaitCallback; }
// NOTE: please set callbacks before requesting audio/video data!
void RequestAudioData();
void RequestVideoData(bool aSkipToNextKeyframe, media::TimeUnit aTimeThreshold);
// NOTE: please set callbacks before invoking WaitForData()!
void WaitForData(MediaData::Type aType);
bool IsRequestingAudioData() const;
bool IsRequestingVideoData() const;
bool IsWaitingAudioData() const;
bool IsWaitingVideoData() const;
RefPtr<SeekPromise> Seek(SeekTarget aTarget, media::TimeUnit aEndTime);
RefPtr<BufferedUpdatePromise> UpdateBufferedWithPromise();
RefPtr<ShutdownPromise> Shutdown();
void ReleaseResources();
void SetIdle();
void ResetDecode(TrackSet aTracks);
nsresult Init() { return mReader->Init(); }
bool IsWaitForDataSupported() const { return mReader->IsWaitForDataSupported(); }
bool IsAsync() const { return mReader->IsAsync(); }
bool UseBufferingHeuristics() const { return mReader->UseBufferingHeuristics(); }
bool ForceZeroStartTime() const { return mReader->ForceZeroStartTime(); }
bool VideoIsHardwareAccelerated() const {
return mReader->VideoIsHardwareAccelerated();
}
TimedMetadataEventSource& TimedMetadataEvent() {
return mReader->TimedMetadataEvent();
}
MediaEventSource<void>& OnMediaNotSeekable() {
return mReader->OnMediaNotSeekable();
}
size_t SizeOfVideoQueueInBytes() const {
return mReader->SizeOfVideoQueueInBytes();
}
size_t SizeOfAudioQueueInBytes() const {
return mReader->SizeOfAudioQueueInBytes();
}
size_t SizeOfAudioQueueInFrames() const {
return mReader->SizeOfAudioQueueInFrames();
}
size_t SizeOfVideoQueueInFrames() const {
return mReader->SizeOfVideoQueueInFrames();
}
void ReadUpdatedMetadata(MediaInfo* aInfo) {
mReader->ReadUpdatedMetadata(aInfo);
}
AbstractCanonical<media::TimeIntervals>* CanonicalBuffered() {
return mReader->CanonicalBuffered();
}
void SetCDMProxy(CDMProxy* aProxy) { mReader->SetCDMProxy(aProxy); }
void SetVideoBlankDecode(bool aIsBlankDecode);
private:
~MediaDecoderReaderWrapper();
void OnMetadataRead(MetadataHolder* aMetadata);
void OnMetadataNotRead() {}
MediaCallbackExc<WaitCallbackData>& WaitCallbackRef(MediaData::Type aType);
MozPromiseRequestHolder<WaitForDataPromise>& WaitRequestRef(MediaData::Type aType);
const bool mForceZeroStartTime;
const RefPtr<AbstractThread> mOwnerThread;
const RefPtr<MediaDecoderReader> mReader;
bool mShutdown = false;
RefPtr<StartTimeRendezvous> mStartTimeRendezvous;
MozPromiseRequestHolder<MediaDataPromise> mAudioDataRequest;
MozPromiseRequestHolder<MediaDataPromise> mVideoDataRequest;
MozPromiseRequestHolder<WaitForDataPromise> mAudioWaitRequest;
MozPromiseRequestHolder<WaitForDataPromise> mVideoWaitRequest;
};
} // namespace mozilla
#endif // MediaDecoderReaderWrapper_h_
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