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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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