108 lines
2.9 KiB
C++
108 lines
2.9 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 AudioSinkWrapper_h_
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#define AudioSinkWrapper_h_
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#include "mozilla/AbstractThread.h"
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#include "mozilla/dom/AudioChannelBinding.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/UniquePtr.h"
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#include "MediaSink.h"
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namespace mozilla {
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class MediaData;
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template <class T> class MediaQueue;
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namespace media {
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class AudioSink;
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/**
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* A wrapper around AudioSink to provide the interface of MediaSink.
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*/
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class AudioSinkWrapper : public MediaSink {
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// An AudioSink factory.
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class Creator {
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public:
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virtual ~Creator() {}
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virtual AudioSink* Create() = 0;
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};
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// Wrap around a function object which creates AudioSinks.
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template <typename Function>
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class CreatorImpl : public Creator {
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public:
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explicit CreatorImpl(const Function& aFunc) : mFunction(aFunc) {}
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AudioSink* Create() override { return mFunction(); }
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private:
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Function mFunction;
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};
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public:
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template <typename Function>
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AudioSinkWrapper(AbstractThread* aOwnerThread, const Function& aFunc)
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: mOwnerThread(aOwnerThread)
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, mCreator(new CreatorImpl<Function>(aFunc))
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, mIsStarted(false)
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// Give an insane value to facilitate debug if used before playback starts.
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, mPlayDuration(INT64_MAX)
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, mAudioEnded(true)
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{}
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const PlaybackParams& GetPlaybackParams() const override;
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void SetPlaybackParams(const PlaybackParams& aParams) override;
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RefPtr<GenericPromise> OnEnded(TrackType aType) override;
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int64_t GetEndTime(TrackType aType) const override;
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int64_t GetPosition(TimeStamp* aTimeStamp = nullptr) const override;
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bool HasUnplayedFrames(TrackType aType) const override;
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void SetVolume(double aVolume) override;
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void SetPlaybackRate(double aPlaybackRate) override;
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void SetPreservesPitch(bool aPreservesPitch) override;
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void SetPlaying(bool aPlaying) override;
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void Start(int64_t aStartTime, const MediaInfo& aInfo) override;
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void Stop() override;
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bool IsStarted() const override;
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bool IsPlaying() const override;
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void Shutdown() override;
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private:
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virtual ~AudioSinkWrapper();
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void AssertOwnerThread() const {
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MOZ_ASSERT(mOwnerThread->IsCurrentThreadIn());
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}
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int64_t GetVideoPosition(TimeStamp aNow) const;
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void OnAudioEnded();
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const RefPtr<AbstractThread> mOwnerThread;
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UniquePtr<Creator> mCreator;
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RefPtr<AudioSink> mAudioSink;
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RefPtr<GenericPromise> mEndPromise;
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bool mIsStarted;
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PlaybackParams mParams;
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TimeStamp mPlayStartTime;
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int64_t mPlayDuration;
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bool mAudioEnded;
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MozPromiseRequestHolder<GenericPromise> mAudioSinkPromise;
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};
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} // namespace media
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} // namespace mozilla
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#endif //AudioSinkWrapper_h_
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