/*
* Copyright (C) 2012, Intel Corporation. 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
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef AudioBasicInspectorNode_h
#define AudioBasicInspectorNode_h
#include "modules/webaudio/AudioNode.h"
namespace WebCore {
class ExceptionState;
// AudioBasicInspectorNode is an AudioNode with one input and one output where the output might not necessarily connect to another node's input.
// If the output is not connected to any other node, then the AudioBasicInspectorNode's processIfNecessary() function will be called automatically by
// AudioContext before the end of each render quantum so that it can inspect the audio stream.
class AudioBasicInspectorNode : public AudioNode {
public:
AudioBasicInspectorNode(AudioContext*, float sampleRate, unsigned outputChannelCount);
// AudioNode
virtual void pullInputs(size_t framesToProcess) OVERRIDE FINAL;
virtual void connect(AudioNode*, unsigned outputIndex, unsigned inputIndex, ExceptionState&) OVERRIDE FINAL;
virtual void disconnect(unsigned outputIndex, ExceptionState&) OVERRIDE FINAL;
virtual void checkNumberOfChannelsForInput(AudioNodeInput*) OVERRIDE FINAL;
private:
void updatePullStatus();
bool m_needAutomaticPull; // When setting to true, AudioBasicInspectorNode will be pulled automaticlly by AudioContext before the end of each render quantum.
};
} // namespace WebCore
#endif // AudioBasicInspectorNode_h