gecko-dev/content/media/webaudio/ScriptProcessorNode.h

100 lines
2.3 KiB
C++

/* -*- 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 ScriptProcessorNode_h_
#define ScriptProcessorNode_h_
#include "AudioNode.h"
#include "nsAutoPtr.h"
namespace mozilla {
class AudioNodeStream;
namespace dom {
class AudioContext;
class ScriptProcessorNodeEngine;
class SharedBuffers;
class ScriptProcessorNode : public AudioNode
{
public:
ScriptProcessorNode(AudioContext* aContext,
uint32_t aBufferSize,
uint32_t aNumberOfInputChannels,
uint32_t aNumberOfOutputChannels);
virtual ~ScriptProcessorNode();
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ScriptProcessorNode, AudioNode)
IMPL_EVENT_HANDLER(audioprocess)
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aScope) MOZ_OVERRIDE;
virtual void Connect(AudioNode& aDestination, uint32_t aOutput,
uint32_t aInput, ErrorResult& aRv) MOZ_OVERRIDE
{
AudioNode::Connect(aDestination, aOutput, aInput, aRv);
if (!aRv.Failed()) {
mPlayingRef.Take(this);
}
}
virtual void Connect(AudioParam& aDestination, uint32_t aOutput,
ErrorResult& aRv) MOZ_OVERRIDE
{
AudioNode::Connect(aDestination, aOutput, aRv);
if (!aRv.Failed()) {
mPlayingRef.Take(this);
}
}
virtual void Disconnect(uint32_t aOutput, ErrorResult& aRv) MOZ_OVERRIDE
{
AudioNode::Disconnect(aOutput, aRv);
if (!aRv.Failed()) {
mPlayingRef.Drop(this);
}
}
uint32_t BufferSize() const
{
return mBufferSize;
}
SharedBuffers* GetSharedBuffers() const
{
return mSharedBuffers;
}
uint32_t NumberOfOutputChannels() const
{
return mNumberOfOutputChannels;
}
using nsDOMEventTargetHelper::DispatchTrustedEvent;
void Stop()
{
mPlayingRef.ForceDrop(this);
}
private:
nsAutoPtr<SharedBuffers> mSharedBuffers;
const uint32_t mBufferSize;
const uint32_t mNumberOfOutputChannels;
SelfCountedReference<ScriptProcessorNode> mPlayingRef; // a reference to self while planing
};
}
}
#endif