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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 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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31 #if ENABLE(WEB_AUDIO) | 31 #if ENABLE(WEB_AUDIO) |
32 | 32 |
33 #include "platform/audio/ReverbConvolver.h" | 33 #include "platform/audio/ReverbConvolver.h" |
34 | 34 |
35 #include "platform/Task.h" | 35 #include "platform/Task.h" |
36 #include "platform/audio/AudioBus.h" | 36 #include "platform/audio/AudioBus.h" |
37 #include "platform/audio/VectorMath.h" | 37 #include "platform/audio/VectorMath.h" |
38 #include "public/platform/Platform.h" | 38 #include "public/platform/Platform.h" |
39 #include "public/platform/WebThread.h" | 39 #include "public/platform/WebThread.h" |
40 | 40 |
41 namespace WebCore { | 41 namespace blink { |
42 | 42 |
43 using namespace VectorMath; | 43 using namespace VectorMath; |
44 | 44 |
45 const int InputBufferSize = 8 * 16384; | 45 const int InputBufferSize = 8 * 16384; |
46 | 46 |
47 // We only process the leading portion of the impulse response in the real-time
thread. We don't exceed this length. | 47 // We only process the leading portion of the impulse response in the real-time
thread. We don't exceed this length. |
48 // It turns out then, that the background thread has about 278msec of scheduling
slop. | 48 // It turns out then, that the background thread has about 278msec of scheduling
slop. |
49 // Empirically, this has been found to be a good compromise between giving enoug
h time for scheduling slop, | 49 // Empirically, this has been found to be a good compromise between giving enoug
h time for scheduling slop, |
50 // while still minimizing the amount of processing done in the primary (high-pri
ority) thread. | 50 // while still minimizing the amount of processing done in the primary (high-pri
ority) thread. |
51 // This was found to be a good value on Mac OS X, and may work well on other pla
tforms as well, assuming | 51 // This was found to be a good value on Mac OS X, and may work well on other pla
tforms as well, assuming |
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189 | 189 |
190 m_accumulationBuffer.reset(); | 190 m_accumulationBuffer.reset(); |
191 m_inputBuffer.reset(); | 191 m_inputBuffer.reset(); |
192 } | 192 } |
193 | 193 |
194 size_t ReverbConvolver::latencyFrames() const | 194 size_t ReverbConvolver::latencyFrames() const |
195 { | 195 { |
196 return 0; | 196 return 0; |
197 } | 197 } |
198 | 198 |
199 } // namespace WebCore | 199 } // namespace blink |
200 | 200 |
201 #endif // ENABLE(WEB_AUDIO) | 201 #endif // ENABLE(WEB_AUDIO) |
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