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1 /* | 1 /* |
2 * Copyright (C) 2011, Google Inc. All rights reserved. | 2 * Copyright (C) 2011, Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | 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. | 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
23 */ | 23 */ |
24 | 24 |
25 #include "config.h" | 25 #include "config.h" |
26 | 26 |
27 #if ENABLE(WEB_AUDIO) | 27 #if ENABLE(WEB_AUDIO) |
28 | 28 |
29 #include "modules/webaudio/DefaultAudioDestinationNode.h" | 29 #include "modules/webaudio/DefaultAudioDestinationNode.h" |
30 | 30 |
31 #include "bindings/v8/ExceptionState.h" | |
32 #include "core/dom/ExceptionCode.h" | 31 #include "core/dom/ExceptionCode.h" |
33 #include "core/platform/Logging.h" | 32 #include "core/platform/Logging.h" |
34 #include "wtf/MainThread.h" | 33 #include "wtf/MainThread.h" |
35 | 34 |
36 const unsigned EnabledInputChannels = 2; | 35 const unsigned EnabledInputChannels = 2; |
37 | 36 |
38 namespace WebCore { | 37 namespace WebCore { |
39 | 38 |
40 DefaultAudioDestinationNode::DefaultAudioDestinationNode(AudioContext* context) | 39 DefaultAudioDestinationNode::DefaultAudioDestinationNode(AudioContext* context) |
41 : AudioDestinationNode(context, AudioDestination::hardwareSampleRate()) | 40 : AudioDestinationNode(context, AudioDestination::hardwareSampleRate()) |
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103 ASSERT(isInitialized()); | 102 ASSERT(isInitialized()); |
104 if (isInitialized()) | 103 if (isInitialized()) |
105 m_destination->start(); | 104 m_destination->start(); |
106 } | 105 } |
107 | 106 |
108 unsigned long DefaultAudioDestinationNode::maxChannelCount() const | 107 unsigned long DefaultAudioDestinationNode::maxChannelCount() const |
109 { | 108 { |
110 return AudioDestination::maxChannelCount(); | 109 return AudioDestination::maxChannelCount(); |
111 } | 110 } |
112 | 111 |
113 void DefaultAudioDestinationNode::setChannelCount(unsigned long channelCount, Ex
ceptionState& es) | 112 void DefaultAudioDestinationNode::setChannelCount(unsigned long channelCount, Ex
ceptionCode& ec) |
114 { | 113 { |
115 // The channelCount for the input to this node controls the actual number of
channels we | 114 // The channelCount for the input to this node controls the actual number of
channels we |
116 // send to the audio hardware. It can only be set depending on the maximum n
umber of | 115 // send to the audio hardware. It can only be set depending on the maximum n
umber of |
117 // channels supported by the hardware. | 116 // channels supported by the hardware. |
118 | 117 |
119 ASSERT(isMainThread()); | 118 ASSERT(isMainThread()); |
120 | 119 |
121 if (!maxChannelCount() || channelCount > maxChannelCount()) { | 120 if (!maxChannelCount() || channelCount > maxChannelCount()) { |
122 es.throwDOMException(InvalidStateError); | 121 ec = InvalidStateError; |
123 return; | 122 return; |
124 } | 123 } |
125 | 124 |
126 unsigned long oldChannelCount = this->channelCount(); | 125 unsigned long oldChannelCount = this->channelCount(); |
127 AudioNode::setChannelCount(channelCount, es); | 126 AudioNode::setChannelCount(channelCount, ec); |
128 | 127 |
129 if (!es.hadException() && this->channelCount() != oldChannelCount && isIniti
alized()) { | 128 if (!ec && this->channelCount() != oldChannelCount && isInitialized()) { |
130 // Re-create destination. | 129 // Re-create destination. |
131 m_destination->stop(); | 130 m_destination->stop(); |
132 createDestination(); | 131 createDestination(); |
133 m_destination->start(); | 132 m_destination->start(); |
134 } | 133 } |
135 } | 134 } |
136 | 135 |
137 } // namespace WebCore | 136 } // namespace WebCore |
138 | 137 |
139 #endif // ENABLE(WEB_AUDIO) | 138 #endif // ENABLE(WEB_AUDIO) |
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