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 "DelayNode.h"
30
31#include "DelayProcessor.h"
32#include <wtf/IsoMallocInlines.h>
33
34namespace WebCore {
35
36WTF_MAKE_ISO_ALLOCATED_IMPL(DelayNode);
37
38const double maximumAllowedDelayTime = 180;
39
40inline DelayNode::DelayNode(AudioContext& context, float sampleRate, double maxDelayTime)
41 : AudioBasicProcessorNode(context, sampleRate)
42{
43 setNodeType(NodeTypeDelay);
44 m_processor = std::make_unique<DelayProcessor>(context, sampleRate, 1, maxDelayTime);
45}
46
47ExceptionOr<Ref<DelayNode>> DelayNode::create(AudioContext& context, float sampleRate, double maxDelayTime)
48{
49 if (maxDelayTime <= 0 || maxDelayTime >= maximumAllowedDelayTime)
50 return Exception { NotSupportedError };
51 return adoptRef(*new DelayNode(context, sampleRate, maxDelayTime));
52}
53
54AudioParam* DelayNode::delayTime()
55{
56 return static_cast<DelayProcessor&>(*m_processor).delayTime();
57}
58
59} // namespace WebCore
60
61#endif // ENABLE(WEB_AUDIO)
62