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content/media/webaudio/AudioBufferSourceNode.h@6474c204b198 (annotated)

content/media/webaudio/AudioBufferSourceNode.h

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0	3	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	6
michael@0	7	#ifndef AudioBufferSourceNode_h_
michael@0	8	#define AudioBufferSourceNode_h_
michael@0	9
michael@0	10	#include "AudioNode.h"
michael@0	11	#include "AudioBuffer.h"
michael@0	12
michael@0	13	namespace mozilla {
michael@0	14	namespace dom {
michael@0	15
michael@0	16	class AudioParam;
michael@0	17
michael@0	18	class AudioBufferSourceNode : public AudioNode,
michael@0	19	public MainThreadMediaStreamListener
michael@0	20	{
michael@0	21	public:
michael@0	22	explicit AudioBufferSourceNode(AudioContext* aContext);
michael@0	23	virtual ~AudioBufferSourceNode();
michael@0	24
michael@0	25	virtual void DestroyMediaStream() MOZ_OVERRIDE
michael@0	26	{
michael@0	27	if (mStream) {
michael@0	28	mStream->RemoveMainThreadListener(this);
michael@0	29	}
michael@0	30	AudioNode::DestroyMediaStream();
michael@0	31	}
michael@0	32	virtual uint16_t NumberOfInputs() const MOZ_FINAL MOZ_OVERRIDE
michael@0	33	{
michael@0	34	return 0;
michael@0	35	}
michael@0	36	virtual AudioBufferSourceNode* AsAudioBufferSourceNode() MOZ_OVERRIDE
michael@0	37	{
michael@0	38	return this;
michael@0	39	}
michael@0	40	NS_DECL_ISUPPORTS_INHERITED
michael@0	41	NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioBufferSourceNode, AudioNode)
michael@0	42
michael@0	43	virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
michael@0	44
michael@0	45	void Start(double aWhen, double aOffset,
michael@0	46	const Optional<double>& aDuration, ErrorResult& aRv);
michael@0	47	void Stop(double aWhen, ErrorResult& aRv);
michael@0	48
michael@0	49	AudioBuffer* GetBuffer(JSContext* aCx) const
michael@0	50	{
michael@0	51	return mBuffer;
michael@0	52	}
michael@0	53	void SetBuffer(JSContext* aCx, AudioBuffer* aBuffer)
michael@0	54	{
michael@0	55	mBuffer = aBuffer;
michael@0	56	SendBufferParameterToStream(aCx);
michael@0	57	SendLoopParametersToStream();
michael@0	58	}
michael@0	59	AudioParam* PlaybackRate() const
michael@0	60	{
michael@0	61	return mPlaybackRate;
michael@0	62	}
michael@0	63	bool Loop() const
michael@0	64	{
michael@0	65	return mLoop;
michael@0	66	}
michael@0	67	void SetLoop(bool aLoop)
michael@0	68	{
michael@0	69	mLoop = aLoop;
michael@0	70	SendLoopParametersToStream();
michael@0	71	}
michael@0	72	double LoopStart() const
michael@0	73	{
michael@0	74	return mLoopStart;
michael@0	75	}
michael@0	76	void SetLoopStart(double aStart)
michael@0	77	{
michael@0	78	mLoopStart = aStart;
michael@0	79	SendLoopParametersToStream();
michael@0	80	}
michael@0	81	double LoopEnd() const
michael@0	82	{
michael@0	83	return mLoopEnd;
michael@0	84	}
michael@0	85	void SetLoopEnd(double aEnd)
michael@0	86	{
michael@0	87	mLoopEnd = aEnd;
michael@0	88	SendLoopParametersToStream();
michael@0	89	}
michael@0	90	void SendDopplerShiftToStream(double aDopplerShift);
michael@0	91
michael@0	92	IMPL_EVENT_HANDLER(ended)
michael@0	93
michael@0	94	virtual void NotifyMainThreadStateChanged() MOZ_OVERRIDE;
michael@0	95
michael@0	96	virtual const char* NodeType() const
michael@0	97	{
michael@0	98	return "AudioBufferSourceNode";
michael@0	99	}
michael@0	100
michael@0	101	virtual size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
michael@0	102	virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
michael@0	103
michael@0	104	private:
michael@0	105	friend class AudioBufferSourceNodeEngine;
michael@0	106	// START is sent during Start().
michael@0	107	// STOP is sent during Stop().
michael@0	108	// BUFFERSTART and BUFFEREND are sent when SetBuffer() and Start() have
michael@0	109	// been called (along with sending the buffer).
michael@0	110	enum EngineParameters {
michael@0	111	SAMPLE_RATE,
michael@0	112	START,
michael@0	113	STOP,
michael@0	114	// BUFFERSTART is the "offset" passed to start(), multiplied by
michael@0	115	// buffer.sampleRate.
michael@0	116	BUFFERSTART,
michael@0	117	// BUFFEREND is the sum of "offset" and "duration" passed to start(),
michael@0	118	// multiplied by buffer.sampleRate, or the size of the buffer, if smaller.
michael@0	119	BUFFEREND,
michael@0	120	LOOP,
michael@0	121	LOOPSTART,
michael@0	122	LOOPEND,
michael@0	123	PLAYBACKRATE,
michael@0	124	DOPPLERSHIFT
michael@0	125	};
michael@0	126
michael@0	127	void SendLoopParametersToStream();
michael@0	128	void SendBufferParameterToStream(JSContext* aCx);
michael@0	129	void SendOffsetAndDurationParametersToStream(AudioNodeStream* aStream);
michael@0	130	static void SendPlaybackRateToStream(AudioNode* aNode);
michael@0	131
michael@0	132	private:
michael@0	133	double mLoopStart;
michael@0	134	double mLoopEnd;
michael@0	135	double mOffset;
michael@0	136	double mDuration;
michael@0	137	nsRefPtr<AudioBuffer> mBuffer;
michael@0	138	nsRefPtr<AudioParam> mPlaybackRate;
michael@0	139	bool mLoop;
michael@0	140	bool mStartCalled;
michael@0	141	bool mStopped;
michael@0	142	};
michael@0	143
michael@0	144	}
michael@0	145	}
michael@0	146
michael@0	147	#endif
michael@0	148