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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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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 "platform/audio/HRTFPanner.h" | 29 #include "platform/audio/HRTFPanner.h" |
30 | 30 |
31 #include <algorithm> | 31 #include <algorithm> |
32 #include "platform/audio/AudioBus.h" | 32 #include "platform/audio/AudioBus.h" |
33 #include "platform/audio/FFTConvolver.h" | |
34 #include "platform/audio/HRTFDatabase.h" | 33 #include "platform/audio/HRTFDatabase.h" |
35 #include "wtf/MathExtras.h" | 34 #include "wtf/MathExtras.h" |
36 #include "wtf/RefPtr.h" | 35 #include "wtf/RefPtr.h" |
37 | 36 |
38 using namespace std; | 37 using namespace std; |
39 | 38 |
40 namespace WebCore { | 39 namespace WebCore { |
41 | 40 |
42 // The value of 2 milliseconds is larger than the largest delay which exists in
any HRTFKernel from the default HRTFDatabase (0.0136 seconds). | 41 // The value of 2 milliseconds is larger than the largest delay which exists in
any HRTFKernel from the default HRTFDatabase (0.0136 seconds). |
43 // We ASSERT the delay values used in process() with this value. | 42 // We ASSERT the delay values used in process() with this value. |
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305 double HRTFPanner::latencyTime() const | 304 double HRTFPanner::latencyTime() const |
306 { | 305 { |
307 // The latency of a FFTConvolver is also fftSize() / 2, and is in addition t
o its tailTime of the | 306 // The latency of a FFTConvolver is also fftSize() / 2, and is in addition t
o its tailTime of the |
308 // same value. | 307 // same value. |
309 return (fftSize() / 2) / static_cast<double>(sampleRate()); | 308 return (fftSize() / 2) / static_cast<double>(sampleRate()); |
310 } | 309 } |
311 | 310 |
312 } // namespace WebCore | 311 } // namespace WebCore |
313 | 312 |
314 #endif // ENABLE(WEB_AUDIO) | 313 #endif // ENABLE(WEB_AUDIO) |
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