Source/modules/webaudio/DelayProcessor.h

/*
 * 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
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef DelayProcessor_h
#define DelayProcessor_h

#include "platform/audio/AudioDSPKernelProcessor.h"
#include "modules/webaudio/AudioParam.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/RefPtr.h"

namespace blink {

class AudioDSPKernel;

class DelayProcessor FINAL : public AudioDSPKernelProcessor {
public:
    DelayProcessor(AudioContext*, float sampleRate, unsigned numberOfChannels, double maxDelayTime);
    virtual ~DelayProcessor();
    virtual void trace(Visitor*) OVERRIDE;

    virtual PassOwnPtr<AudioDSPKernel> createKernel() OVERRIDE;

    AudioParam* delayTime() const { return m_delayTime.get(); }

    double maxDelayTime() { return m_maxDelayTime; }
private:

    RefPtrWillBeMember<AudioParam> m_delayTime;
    double m_maxDelayTime;
};

} // namespace blink

#endif // DelayProcessor_h