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89cd46ef7d
Storing references on the AudioContext instead of on the AudioNodes will allow the AudioContext to report them to the cycle collector until offline rendering starts. --HG-- extra : transplant_source : %81%83Hp%F6T%E7%9EA%B3%D0%5Dz%EA%1FYv%A2%23%ED
141 lines
3.6 KiB
C++
141 lines
3.6 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 OscillatorNode_h_
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#define OscillatorNode_h_
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#include "AudioNode.h"
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#include "AudioParam.h"
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#include "PeriodicWave.h"
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#include "mozilla/dom/OscillatorNodeBinding.h"
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#include "mozilla/Preferences.h"
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namespace mozilla {
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namespace dom {
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class AudioContext;
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class OscillatorNode : public AudioNode,
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public MainThreadMediaStreamListener
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{
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public:
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explicit OscillatorNode(AudioContext* aContext);
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virtual ~OscillatorNode();
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(OscillatorNode, AudioNode)
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virtual JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aScope) MOZ_OVERRIDE;
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virtual void DestroyMediaStream() MOZ_OVERRIDE
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{
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if (mStream) {
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mStream->RemoveMainThreadListener(this);
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}
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AudioNode::DestroyMediaStream();
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}
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virtual uint16_t NumberOfInputs() const MOZ_FINAL MOZ_OVERRIDE
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{
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return 0;
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}
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OscillatorType Type() const
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{
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return mType;
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}
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void SetType(OscillatorType aType, ErrorResult& aRv)
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{
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if (!Preferences::GetBool("media.webaudio.legacy.OscillatorNode")) {
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// Do not accept the alternate enum values unless the legacy pref
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// has been turned on.
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switch (aType) {
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case OscillatorType::_0:
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case OscillatorType::_1:
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case OscillatorType::_2:
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case OscillatorType::_3:
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case OscillatorType::_4:
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// Do nothing in order to emulate setting an invalid enum value.
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return;
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default:
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// Shut up the compiler warning
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break;
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}
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}
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// Handle the alternate enum values
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switch (aType) {
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case OscillatorType::_0: aType = OscillatorType::Sine; break;
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case OscillatorType::_1: aType = OscillatorType::Square; break;
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case OscillatorType::_2: aType = OscillatorType::Sawtooth; break;
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case OscillatorType::_3: aType = OscillatorType::Triangle; break;
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case OscillatorType::_4: aType = OscillatorType::Custom; break;
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default:
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// Shut up the compiler warning
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break;
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}
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if (aType == OscillatorType::Custom) {
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// ::Custom can only be set by setPeriodicWave().
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// https://github.com/WebAudio/web-audio-api/issues/105 for exception.
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aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
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return;
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}
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mType = aType;
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SendTypeToStream();
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}
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AudioParam* Frequency() const
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{
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return mFrequency;
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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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void Start(double aWhen, ErrorResult& aRv);
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void NoteOn(double aWhen, ErrorResult& aRv)
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{
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Start(aWhen, aRv);
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}
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void Stop(double aWhen, ErrorResult& aRv);
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void NoteOff(double aWhen, ErrorResult& aRv)
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{
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Stop(aWhen, aRv);
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}
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void SetPeriodicWave(PeriodicWave& aPeriodicWave)
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{
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mPeriodicWave = &aPeriodicWave;
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// SendTypeToStream will call SendPeriodicWaveToStream for us.
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mType = OscillatorType::Custom;
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SendTypeToStream();
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}
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IMPL_EVENT_HANDLER(ended)
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virtual void NotifyMainThreadStateChanged() MOZ_OVERRIDE;
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private:
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static void SendFrequencyToStream(AudioNode* aNode);
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static void SendDetuneToStream(AudioNode* aNode);
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void SendTypeToStream();
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void SendPeriodicWaveToStream();
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private:
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OscillatorType mType;
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nsRefPtr<PeriodicWave> mPeriodicWave;
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nsRefPtr<AudioParam> mFrequency;
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nsRefPtr<AudioParam> mDetune;
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bool mStartCalled;
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bool mStopped;
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};
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}
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}
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#endif
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