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 | |
34 | namespace WebCore { |
35 | |
36 | WTF_MAKE_ISO_ALLOCATED_IMPL(DelayNode); |
37 | |
38 | const double maximumAllowedDelayTime = 180; |
39 | |
40 | inline 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 | |
47 | ExceptionOr<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 | |
54 | AudioParam* DelayNode::delayTime() |
55 | { |
56 | return static_cast<DelayProcessor&>(*m_processor).delayTime(); |
57 | } |
58 | |
59 | } // namespace WebCore |
60 | |
61 | #endif // ENABLE(WEB_AUDIO) |
62 | |