1/*
2 * Copyright (C) 2011, 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#include "WaveShaperNode.h"
27
28#if ENABLE(WEB_AUDIO)
29
30#include "AudioContext.h"
31#include <wtf/IsoMallocInlines.h>
32#include <wtf/MainThread.h>
33
34namespace WebCore {
35
36WTF_MAKE_ISO_ALLOCATED_IMPL(WaveShaperNode);
37
38WaveShaperNode::WaveShaperNode(AudioContext& context)
39 : AudioBasicProcessorNode(context, context.sampleRate())
40{
41 setNodeType(NodeTypeWaveShaper);
42 m_processor = std::make_unique<WaveShaperProcessor>(context.sampleRate(), 1);
43
44 initialize();
45}
46
47void WaveShaperNode::setCurve(Float32Array& curve)
48{
49 ASSERT(isMainThread());
50 DEBUG_LOG(LOGIDENTIFIER);
51 waveShaperProcessor()->setCurve(&curve);
52}
53
54Float32Array* WaveShaperNode::curve()
55{
56 return waveShaperProcessor()->curve();
57}
58
59static inline WaveShaperProcessor::OverSampleType processorType(WaveShaperNode::OverSampleType type)
60{
61 switch (type) {
62 case WaveShaperNode::OverSampleType::None:
63 return WaveShaperProcessor::OverSampleNone;
64 case WaveShaperNode::OverSampleType::_2x:
65 return WaveShaperProcessor::OverSample2x;
66 case WaveShaperNode::OverSampleType::_4x:
67 return WaveShaperProcessor::OverSample4x;
68 }
69 ASSERT_NOT_REACHED();
70 return WaveShaperProcessor::OverSampleNone;
71}
72
73void WaveShaperNode::setOversample(OverSampleType type)
74{
75 ASSERT(isMainThread());
76 INFO_LOG(LOGIDENTIFIER, type);
77
78 // Synchronize with any graph changes or changes to channel configuration.
79 AudioContext::AutoLocker contextLocker(context());
80 waveShaperProcessor()->setOversample(processorType(type));
81}
82
83auto WaveShaperNode::oversample() const -> OverSampleType
84{
85 switch (const_cast<WaveShaperNode*>(this)->waveShaperProcessor()->oversample()) {
86 case WaveShaperProcessor::OverSampleNone:
87 return OverSampleType::None;
88 case WaveShaperProcessor::OverSample2x:
89 return OverSampleType::_2x;
90 case WaveShaperProcessor::OverSample4x:
91 return OverSampleType::_4x;
92 }
93 ASSERT_NOT_REACHED();
94 return OverSampleType::None;
95}
96
97} // namespace WebCore
98
99#endif // ENABLE(WEB_AUDIO)
100