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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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| 25 #include "config.h" | 25 #include "config.h" |
| 26 | 26 |
| 27 #if ENABLE(WEB_AUDIO) | 27 #if ENABLE(WEB_AUDIO) |
| 28 | 28 |
| 29 #include "core/platform/audio/HRTFPanner.h" | 29 #include "core/platform/audio/HRTFPanner.h" |
| 30 | 30 |
| 31 #include <algorithm> | 31 #include <algorithm> |
| 32 #include "core/platform/audio/AudioBus.h" | 32 #include "core/platform/audio/AudioBus.h" |
| 33 #include "core/platform/audio/FFTConvolver.h" | 33 #include "core/platform/audio/FFTConvolver.h" |
| 34 #include "core/platform/audio/HRTFDatabase.h" | 34 #include "core/platform/audio/HRTFDatabase.h" |
| 35 #include <wtf/MathExtras.h> | 35 #include "wtf/MathExtras.h" |
| 36 #include <wtf/RefPtr.h> | 36 #include "wtf/RefPtr.h" |
| 37 | 37 |
| 38 using namespace std; | 38 using namespace std; |
| 39 | 39 |
| 40 namespace WebCore { | 40 namespace WebCore { |
| 41 | 41 |
| 42 // The value of 2 milliseconds is larger than the largest delay which exists in
any HRTFKernel from the default HRTFDatabase (0.0136 seconds). | 42 // 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. | 43 // We ASSERT the delay values used in process() with this value. |
| 44 const double MaxDelayTimeSeconds = 0.002; | 44 const double MaxDelayTimeSeconds = 0.002; |
| 45 | 45 |
| 46 const int UninitializedAzimuth = -1; | 46 const int UninitializedAzimuth = -1; |
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| 305 double HRTFPanner::latencyTime() const | 305 double HRTFPanner::latencyTime() const |
| 306 { | 306 { |
| 307 // The latency of a FFTConvolver is also fftSize() / 2, and is in addition t
o its tailTime of the | 307 // The latency of a FFTConvolver is also fftSize() / 2, and is in addition t
o its tailTime of the |
| 308 // same value. | 308 // same value. |
| 309 return (fftSize() / 2) / static_cast<double>(sampleRate()); | 309 return (fftSize() / 2) / static_cast<double>(sampleRate()); |
| 310 } | 310 } |
| 311 | 311 |
| 312 } // namespace WebCore | 312 } // namespace WebCore |
| 313 | 313 |
| 314 #endif // ENABLE(WEB_AUDIO) | 314 #endif // ENABLE(WEB_AUDIO) |
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