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1 /* | 1 /* |
2 * Copyright (C) 2010, Google Inc. All rights reserved. | 2 * Copyright (C) 2010, 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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24 | 24 |
25 #include "config.h" | 25 #include "config.h" |
26 #if ENABLE(WEB_AUDIO) | 26 #if ENABLE(WEB_AUDIO) |
27 #include "modules/webaudio/AudioDestinationNode.h" | 27 #include "modules/webaudio/AudioDestinationNode.h" |
28 | 28 |
29 #include "modules/webaudio/AudioContext.h" | 29 #include "modules/webaudio/AudioContext.h" |
30 #include "modules/webaudio/AudioNodeInput.h" | 30 #include "modules/webaudio/AudioNodeInput.h" |
31 #include "modules/webaudio/AudioNodeOutput.h" | 31 #include "modules/webaudio/AudioNodeOutput.h" |
32 #include "platform/audio/AudioUtilities.h" | 32 #include "platform/audio/AudioUtilities.h" |
33 #include "platform/audio/DenormalDisabler.h" | 33 #include "platform/audio/DenormalDisabler.h" |
| 34 #include "wtf/Atomics.h" |
34 | 35 |
35 namespace blink { | 36 namespace blink { |
36 | 37 |
37 AudioDestinationHandler::AudioDestinationHandler(AudioNode& node, float sampleRa
te) | 38 AudioDestinationHandler::AudioDestinationHandler(AudioNode& node, float sampleRa
te) |
38 : AudioHandler(NodeTypeDestination, node, sampleRate) | 39 : AudioHandler(NodeTypeDestination, node, sampleRate) |
39 , m_currentSampleFrame(0) | 40 , m_currentSampleFrame(0) |
40 { | 41 { |
41 addInput(); | 42 addInput(); |
42 } | 43 } |
43 | 44 |
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83 destinationBus->copyFrom(*renderedBus); | 84 destinationBus->copyFrom(*renderedBus); |
84 } | 85 } |
85 | 86 |
86 // Process nodes which need a little extra help because they are not connect
ed to anything, but still need to process. | 87 // Process nodes which need a little extra help because they are not connect
ed to anything, but still need to process. |
87 context()->deferredTaskHandler().processAutomaticPullNodes(numberOfFrames); | 88 context()->deferredTaskHandler().processAutomaticPullNodes(numberOfFrames); |
88 | 89 |
89 // Let the context take care of any business at the end of each render quant
um. | 90 // Let the context take care of any business at the end of each render quant
um. |
90 context()->handlePostRenderTasks(); | 91 context()->handlePostRenderTasks(); |
91 | 92 |
92 // Advance current sample-frame. | 93 // Advance current sample-frame. |
93 m_currentSampleFrame += numberOfFrames; | 94 size_t newSampleFrame = m_currentSampleFrame + numberOfFrames; |
| 95 releaseStore(&m_currentSampleFrame, newSampleFrame); |
94 } | 96 } |
95 | 97 |
96 // ---------------------------------------------------------------- | 98 // ---------------------------------------------------------------- |
97 | 99 |
98 AudioDestinationNode::AudioDestinationNode(AudioContext& context) | 100 AudioDestinationNode::AudioDestinationNode(AudioContext& context) |
99 : AudioNode(context) | 101 : AudioNode(context) |
100 { | 102 { |
101 } | 103 } |
102 | 104 |
103 AudioDestinationHandler& AudioDestinationNode::audioDestinationHandler() const | 105 AudioDestinationHandler& AudioDestinationNode::audioDestinationHandler() const |
104 { | 106 { |
105 return static_cast<AudioDestinationHandler&>(handler()); | 107 return static_cast<AudioDestinationHandler&>(handler()); |
106 } | 108 } |
107 | 109 |
108 unsigned long AudioDestinationNode::maxChannelCount() const | 110 unsigned long AudioDestinationNode::maxChannelCount() const |
109 { | 111 { |
110 return audioDestinationHandler().maxChannelCount(); | 112 return audioDestinationHandler().maxChannelCount(); |
111 } | 113 } |
112 | 114 |
113 } // namespace blink | 115 } // namespace blink |
114 | 116 |
115 #endif // ENABLE(WEB_AUDIO) | 117 #endif // ENABLE(WEB_AUDIO) |
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