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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "config.h" | 5 #include "config.h" |
6 #if ENABLE(WEB_AUDIO) | 6 #if ENABLE(WEB_AUDIO) |
7 #include "modules/webaudio/StereoPannerNode.h" | 7 #include "modules/webaudio/StereoPannerNode.h" |
8 | 8 |
9 #include "bindings/core/v8/ExceptionMessages.h" | 9 #include "bindings/core/v8/ExceptionMessages.h" |
10 #include "bindings/core/v8/ExceptionState.h" | 10 #include "bindings/core/v8/ExceptionState.h" |
11 #include "core/dom/ExceptionCode.h" | 11 #include "core/dom/ExceptionCode.h" |
12 #include "core/dom/ExecutionContext.h" | 12 #include "core/dom/ExecutionContext.h" |
13 #include "modules/webaudio/AudioContext.h" | 13 #include "modules/webaudio/AbstractAudioContext.h" |
14 #include "modules/webaudio/AudioNodeInput.h" | 14 #include "modules/webaudio/AudioNodeInput.h" |
15 #include "modules/webaudio/AudioNodeOutput.h" | 15 #include "modules/webaudio/AudioNodeOutput.h" |
16 #include "platform/audio/StereoPanner.h" | 16 #include "platform/audio/StereoPanner.h" |
17 #include "wtf/MathExtras.h" | 17 #include "wtf/MathExtras.h" |
18 | 18 |
19 namespace blink { | 19 namespace blink { |
20 | 20 |
21 StereoPannerHandler::StereoPannerHandler(AudioNode& node, float sampleRate, Audi
oParamHandler& pan) | 21 StereoPannerHandler::StereoPannerHandler(AudioNode& node, float sampleRate, Audi
oParamHandler& pan) |
22 : AudioHandler(NodeTypeStereoPanner, node, sampleRate) | 22 : AudioHandler(NodeTypeStereoPanner, node, sampleRate) |
23 , m_pan(pan) | 23 , m_pan(pan) |
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79 return; | 79 return; |
80 | 80 |
81 m_stereoPanner = Spatializer::create(Spatializer::PanningModelEqualPower, sa
mpleRate()); | 81 m_stereoPanner = Spatializer::create(Spatializer::PanningModelEqualPower, sa
mpleRate()); |
82 | 82 |
83 AudioHandler::initialize(); | 83 AudioHandler::initialize(); |
84 } | 84 } |
85 | 85 |
86 void StereoPannerHandler::setChannelCount(unsigned long channelCount, ExceptionS
tate& exceptionState) | 86 void StereoPannerHandler::setChannelCount(unsigned long channelCount, ExceptionS
tate& exceptionState) |
87 { | 87 { |
88 ASSERT(isMainThread()); | 88 ASSERT(isMainThread()); |
89 AudioContext::AutoLocker locker(context()); | 89 AbstractAudioContext::AutoLocker locker(context()); |
90 | 90 |
91 // A PannerNode only supports 1 or 2 channels | 91 // A PannerNode only supports 1 or 2 channels |
92 if (channelCount > 0 && channelCount <= 2) { | 92 if (channelCount > 0 && channelCount <= 2) { |
93 if (m_channelCount != channelCount) { | 93 if (m_channelCount != channelCount) { |
94 m_channelCount = channelCount; | 94 m_channelCount = channelCount; |
95 if (m_channelCountMode != Max) | 95 if (m_channelCountMode != Max) |
96 updateChannelsForInputs(); | 96 updateChannelsForInputs(); |
97 } | 97 } |
98 } else { | 98 } else { |
99 exceptionState.throwDOMException( | 99 exceptionState.throwDOMException( |
100 NotSupportedError, | 100 NotSupportedError, |
101 ExceptionMessages::indexOutsideRange<unsigned long>( | 101 ExceptionMessages::indexOutsideRange<unsigned long>( |
102 "channelCount", | 102 "channelCount", |
103 channelCount, | 103 channelCount, |
104 1, | 104 1, |
105 ExceptionMessages::InclusiveBound, | 105 ExceptionMessages::InclusiveBound, |
106 2, | 106 2, |
107 ExceptionMessages::InclusiveBound)); | 107 ExceptionMessages::InclusiveBound)); |
108 } | 108 } |
109 } | 109 } |
110 | 110 |
111 void StereoPannerHandler::setChannelCountMode(const String& mode, ExceptionState
& exceptionState) | 111 void StereoPannerHandler::setChannelCountMode(const String& mode, ExceptionState
& exceptionState) |
112 { | 112 { |
113 ASSERT(isMainThread()); | 113 ASSERT(isMainThread()); |
114 AudioContext::AutoLocker locker(context()); | 114 AbstractAudioContext::AutoLocker locker(context()); |
115 | 115 |
116 ChannelCountMode oldMode = m_channelCountMode; | 116 ChannelCountMode oldMode = m_channelCountMode; |
117 | 117 |
118 if (mode == "clamped-max") { | 118 if (mode == "clamped-max") { |
119 m_newChannelCountMode = ClampedMax; | 119 m_newChannelCountMode = ClampedMax; |
120 } else if (mode == "explicit") { | 120 } else if (mode == "explicit") { |
121 m_newChannelCountMode = Explicit; | 121 m_newChannelCountMode = Explicit; |
122 } else if (mode == "max") { | 122 } else if (mode == "max") { |
123 // This is not supported for a StereoPannerNode, which can only handle | 123 // This is not supported for a StereoPannerNode, which can only handle |
124 // 1 or 2 channels. | 124 // 1 or 2 channels. |
125 exceptionState.throwDOMException( | 125 exceptionState.throwDOMException( |
126 NotSupportedError, | 126 NotSupportedError, |
127 "StereoPanner: 'max' is not allowed"); | 127 "StereoPanner: 'max' is not allowed"); |
128 m_newChannelCountMode = oldMode; | 128 m_newChannelCountMode = oldMode; |
129 } else { | 129 } else { |
130 // Do nothing for other invalid values. | 130 // Do nothing for other invalid values. |
131 m_newChannelCountMode = oldMode; | 131 m_newChannelCountMode = oldMode; |
132 } | 132 } |
133 | 133 |
134 if (m_newChannelCountMode != oldMode) | 134 if (m_newChannelCountMode != oldMode) |
135 context()->deferredTaskHandler().addChangedChannelCountMode(this); | 135 context()->deferredTaskHandler().addChangedChannelCountMode(this); |
136 } | 136 } |
137 | 137 |
138 // ---------------------------------------------------------------- | 138 // ---------------------------------------------------------------- |
139 | 139 |
140 StereoPannerNode::StereoPannerNode(AudioContext& context, float sampleRate) | 140 StereoPannerNode::StereoPannerNode(AbstractAudioContext& context, float sampleRa
te) |
141 : AudioNode(context) | 141 : AudioNode(context) |
142 , m_pan(AudioParam::create(context, 0)) | 142 , m_pan(AudioParam::create(context, 0)) |
143 { | 143 { |
144 setHandler(StereoPannerHandler::create(*this, sampleRate, m_pan->handler()))
; | 144 setHandler(StereoPannerHandler::create(*this, sampleRate, m_pan->handler()))
; |
145 } | 145 } |
146 | 146 |
147 StereoPannerNode* StereoPannerNode::create(AudioContext& context, float sampleRa
te) | 147 StereoPannerNode* StereoPannerNode::create(AbstractAudioContext& context, float
sampleRate) |
148 { | 148 { |
149 return new StereoPannerNode(context, sampleRate); | 149 return new StereoPannerNode(context, sampleRate); |
150 } | 150 } |
151 | 151 |
152 DEFINE_TRACE(StereoPannerNode) | 152 DEFINE_TRACE(StereoPannerNode) |
153 { | 153 { |
154 visitor->trace(m_pan); | 154 visitor->trace(m_pan); |
155 AudioNode::trace(visitor); | 155 AudioNode::trace(visitor); |
156 } | 156 } |
157 | 157 |
158 AudioParam* StereoPannerNode::pan() const | 158 AudioParam* StereoPannerNode::pan() const |
159 { | 159 { |
160 return m_pan; | 160 return m_pan; |
161 } | 161 } |
162 | 162 |
163 } // namespace blink | 163 } // namespace blink |
164 | 164 |
165 #endif // ENABLE(WEB_AUDIO) | 165 #endif // ENABLE(WEB_AUDIO) |
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