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/*
* 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
* 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 ConvolverNode_h
#define ConvolverNode_h
#include "AudioNode.h"
#include <memory>
#include <wtf/Lock.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class AudioBuffer;
class Reverb;
class ConvolverNode : public AudioNode {
public:
static Ref<ConvolverNode> create(AudioContext& context, float sampleRate)
{
return adoptRef(*new ConvolverNode(context, sampleRate));
}
virtual ~ConvolverNode();
// AudioNode
virtual void process(size_t framesToProcess) override;
virtual void reset() override;
virtual void initialize() override;
virtual void uninitialize() override;
// Impulse responses
void setBuffer(AudioBuffer*, ExceptionCode&);
AudioBuffer* buffer();
bool normalize() const { return m_normalize; }
void setNormalize(bool normalize) { m_normalize = normalize; }
private:
ConvolverNode(AudioContext&, float sampleRate);
virtual double tailTime() const override;
virtual double latencyTime() const override;
std::unique_ptr<Reverb> m_reverb;
RefPtr<AudioBuffer> m_buffer;
// This synchronizes dynamic changes to the convolution impulse response with process().
mutable Lock m_processMutex;
// Normalize the impulse response or not. Must default to true.
bool m_normalize;
};
} // namespace WebCore
#endif // ConvolverNode_h
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