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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 OscillatorNode_h_
#define OscillatorNode_h_
#include "AudioNode.h"
#include "AudioParam.h"
#include "PeriodicWave.h"
#include "mozilla/dom/OscillatorNodeBinding.h"
namespace mozilla {
namespace dom {
class AudioContext;
class OscillatorNode final : public AudioNode,
public MainThreadMediaStreamListener
{
public:
explicit OscillatorNode(AudioContext* aContext);
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(OscillatorNode, AudioNode)
JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
void DestroyMediaStream() override;
uint16_t NumberOfInputs() const final override
{
return 0;
}
OscillatorType Type() const
{
return mType;
}
void SetType(OscillatorType aType, ErrorResult& aRv)
{
if (aType == OscillatorType::Custom) {
// ::Custom can only be set by setPeriodicWave().
// https://github.com/WebAudio/web-audio-api/issues/105 for exception.
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return;
}
mType = aType;
SendTypeToStream();
}
AudioParam* Frequency() const
{
return mFrequency;
}
AudioParam* Detune() const
{
return mDetune;
}
void Start(double aWhen, ErrorResult& aRv);
void Stop(double aWhen, ErrorResult& aRv);
void SetPeriodicWave(PeriodicWave& aPeriodicWave)
{
mPeriodicWave = &aPeriodicWave;
// SendTypeToStream will call SendPeriodicWaveToStream for us.
mType = OscillatorType::Custom;
SendTypeToStream();
}
IMPL_EVENT_HANDLER(ended)
void NotifyMainThreadStreamFinished() override;
const char* NodeType() const override
{
return "OscillatorNode";
}
size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override;
size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;
protected:
virtual ~OscillatorNode();
private:
void SendTypeToStream();
void SendPeriodicWaveToStream();
private:
OscillatorType mType;
RefPtr<PeriodicWave> mPeriodicWave;
RefPtr<AudioParam> mFrequency;
RefPtr<AudioParam> mDetune;
bool mStartCalled;
};
} // namespace dom
} // namespace mozilla
#endif
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