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#include "config.h"
26
27#if ENABLE(WEB_AUDIO)
28
29#include "modules/webaudio/DelayNode.h"
30
31#include "bindings/core/v8/ExceptionMessages.h"
32#include "bindings/core/v8/ExceptionState.h"
33#include "core/dom/ExceptionCode.h"
34#include "wtf/MathExtras.h"
35
36namespace blink {
37
38const double maximumAllowedDelayTime = 180;
39
40DelayNode::DelayNode(AudioContext* context, float sampleRate, double maxDelayTime, ExceptionState& exceptionState)
41    : AudioBasicProcessorNode(context, sampleRate)
42{
43    if (maxDelayTime <= 0 || maxDelayTime >= maximumAllowedDelayTime || std::isnan(maxDelayTime)) {
44        exceptionState.throwDOMException(
45            NotSupportedError,
46            "max delay time (" + String::number(maxDelayTime)
47            + ") must be between 0 and " + String::number(maximumAllowedDelayTime)
48            + ", exclusive.");
49        return;
50    }
51    m_processor = new DelayProcessor(context, sampleRate, 1, maxDelayTime);
52    setNodeType(NodeTypeDelay);
53}
54
55AudioParam* DelayNode::delayTime()
56{
57    return delayProcessor()->delayTime();
58}
59
60} // namespace blink
61
62#endif // ENABLE(WEB_AUDIO)
63