150 lines
3.5 KiB
C++
150 lines
3.5 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 AudioBufferSourceNode_h_
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#define AudioBufferSourceNode_h_
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#include "AudioNode.h"
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#include "AudioBuffer.h"
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namespace mozilla {
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namespace dom {
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class AudioParam;
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class AudioBufferSourceNode final : public AudioNode,
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public MainThreadMediaStreamListener
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{
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public:
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explicit AudioBufferSourceNode(AudioContext* aContext);
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void DestroyMediaStream() override;
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uint16_t NumberOfInputs() const final override
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{
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return 0;
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}
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AudioBufferSourceNode* AsAudioBufferSourceNode() override
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{
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return this;
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}
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioBufferSourceNode, AudioNode)
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JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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void Start(double aWhen, double aOffset,
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const Optional<double>& aDuration, ErrorResult& aRv);
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void Stop(double aWhen, ErrorResult& aRv);
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AudioBuffer* GetBuffer(JSContext* aCx) const
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{
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return mBuffer;
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}
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void SetBuffer(JSContext* aCx, AudioBuffer* aBuffer)
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{
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mBuffer = aBuffer;
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SendBufferParameterToStream(aCx);
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SendLoopParametersToStream();
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}
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AudioParam* PlaybackRate() const
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{
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return mPlaybackRate;
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}
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AudioParam* Detune() const
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{
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return mDetune;
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}
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bool Loop() const
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{
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return mLoop;
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}
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void SetLoop(bool aLoop)
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{
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mLoop = aLoop;
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SendLoopParametersToStream();
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}
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double LoopStart() const
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{
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return mLoopStart;
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}
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void SetLoopStart(double aStart)
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{
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mLoopStart = aStart;
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SendLoopParametersToStream();
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}
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double LoopEnd() const
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{
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return mLoopEnd;
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}
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void SetLoopEnd(double aEnd)
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{
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mLoopEnd = aEnd;
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SendLoopParametersToStream();
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}
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void SendDopplerShiftToStream(double aDopplerShift);
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IMPL_EVENT_HANDLER(ended)
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void NotifyMainThreadStreamFinished() override;
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const char* NodeType() const override
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{
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return "AudioBufferSourceNode";
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}
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size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;
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size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;
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protected:
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virtual ~AudioBufferSourceNode();
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private:
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friend class AudioBufferSourceNodeEngine;
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// START is sent during Start().
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// STOP is sent during Stop().
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// BUFFERSTART and BUFFEREND are sent when SetBuffer() and Start() have
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// been called (along with sending the buffer).
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enum EngineParameters {
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SAMPLE_RATE,
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START,
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STOP,
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// BUFFERSTART is the "offset" passed to start(), multiplied by
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// buffer.sampleRate.
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BUFFERSTART,
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// BUFFEREND is the sum of "offset" and "duration" passed to start(),
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// multiplied by buffer.sampleRate, or the size of the buffer, if smaller.
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BUFFEREND,
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LOOP,
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LOOPSTART,
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LOOPEND,
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PLAYBACKRATE,
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DETUNE,
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DOPPLERSHIFT
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};
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void SendLoopParametersToStream();
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void SendBufferParameterToStream(JSContext* aCx);
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void SendOffsetAndDurationParametersToStream(AudioNodeStream* aStream);
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private:
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double mLoopStart;
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double mLoopEnd;
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double mOffset;
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double mDuration;
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RefPtr<AudioBuffer> mBuffer;
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RefPtr<AudioParam> mPlaybackRate;
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RefPtr<AudioParam> mDetune;
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bool mLoop;
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bool mStartCalled;
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};
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} // namespace dom
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} // namespace mozilla
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#endif
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