1/*
2 * Copyright (C) 2010, Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1.  Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2.  Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#ifndef DelayProcessor_h
26#define DelayProcessor_h
27
28#include "platform/audio/AudioDSPKernelProcessor.h"
29#include "modules/webaudio/AudioParam.h"
30#include "wtf/PassOwnPtr.h"
31#include "wtf/RefPtr.h"
32
33namespace blink {
34
35class AudioDSPKernel;
36
37class DelayProcessor FINAL : public AudioDSPKernelProcessor {
38public:
39    DelayProcessor(AudioContext*, float sampleRate, unsigned numberOfChannels, double maxDelayTime);
40    virtual ~DelayProcessor();
41    virtual void trace(Visitor*) OVERRIDE;
42
43    virtual PassOwnPtr<AudioDSPKernel> createKernel() OVERRIDE;
44
45    AudioParam* delayTime() const { return m_delayTime.get(); }
46
47    double maxDelayTime() { return m_maxDelayTime; }
48private:
49
50    Member<AudioParam> m_delayTime;
51    double m_maxDelayTime;
52};
53
54} // namespace blink
55
56#endif // DelayProcessor_h
57