/*
* Copyright (C) 2010, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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*/
#ifndef AudioBasicProcessorNode_h
#define AudioBasicProcessorNode_h
#include "modules/webaudio/AudioNode.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/Threading.h"
namespace WebCore {
class AudioBus;
class AudioNodeInput;
class AudioProcessor;
// AudioBasicProcessorNode is an AudioNode with one input and one output where the input and output have the same number of channels.
class AudioBasicProcessorNode : public AudioNode {
public:
AudioBasicProcessorNode(AudioContext*, float sampleRate);
// AudioNode
virtual void process(size_t framesToProcess) OVERRIDE FINAL;
virtual void pullInputs(size_t framesToProcess) OVERRIDE FINAL;
virtual void initialize() OVERRIDE FINAL;
virtual void uninitialize() OVERRIDE FINAL;
// Called in the main thread when the number of channels for the input may have changed.
virtual void checkNumberOfChannelsForInput(AudioNodeInput*) OVERRIDE FINAL;
// Returns the number of channels for both the input and the output.
unsigned numberOfChannels();
protected:
virtual double tailTime() const OVERRIDE FINAL;
virtual double latencyTime() const OVERRIDE FINAL;
AudioProcessor* processor() { return m_processor.get(); }
OwnPtr<AudioProcessor> m_processor;
};
} // namespace WebCore
#endif // AudioBasicProcessorNode_h