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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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34 | 34 |
35 #include <math.h> | 35 #include <math.h> |
36 #include <algorithm> | 36 #include <algorithm> |
37 #include "platform/audio/AudioBus.h" | 37 #include "platform/audio/AudioBus.h" |
38 #include "platform/audio/HRTFPanner.h" | 38 #include "platform/audio/HRTFPanner.h" |
39 #include "wtf/ThreadingPrimitives.h" | 39 #include "wtf/ThreadingPrimitives.h" |
40 #include "wtf/text/StringHash.h" | 40 #include "wtf/text/StringHash.h" |
41 | 41 |
42 using namespace std; | 42 using namespace std; |
43 | 43 |
44 namespace WebCore { | 44 namespace blink { |
45 | 45 |
46 const unsigned HRTFElevation::AzimuthSpacing = 15; | 46 const unsigned HRTFElevation::AzimuthSpacing = 15; |
47 const unsigned HRTFElevation::NumberOfRawAzimuths = 360 / AzimuthSpacing; | 47 const unsigned HRTFElevation::NumberOfRawAzimuths = 360 / AzimuthSpacing; |
48 const unsigned HRTFElevation::InterpolationFactor = 8; | 48 const unsigned HRTFElevation::InterpolationFactor = 8; |
49 const unsigned HRTFElevation::NumberOfTotalAzimuths = NumberOfRawAzimuths * Inte
rpolationFactor; | 49 const unsigned HRTFElevation::NumberOfTotalAzimuths = NumberOfRawAzimuths * Inte
rpolationFactor; |
50 | 50 |
51 // Total number of components of an HRTF database. | 51 // Total number of components of an HRTF database. |
52 const size_t TotalNumberOfResponses = 240; | 52 const size_t TotalNumberOfResponses = 240; |
53 | 53 |
54 // Number of frames in an individual impulse response. | 54 // Number of frames in an individual impulse response. |
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330 | 330 |
331 int azimuthIndex2 = (azimuthIndex + 1) % numKernels; | 331 int azimuthIndex2 = (azimuthIndex + 1) % numKernels; |
332 double frameDelay2L = m_kernelListL->at(azimuthIndex2)->frameDelay(); | 332 double frameDelay2L = m_kernelListL->at(azimuthIndex2)->frameDelay(); |
333 double frameDelay2R = m_kernelListR->at(azimuthIndex2)->frameDelay(); | 333 double frameDelay2R = m_kernelListR->at(azimuthIndex2)->frameDelay(); |
334 | 334 |
335 // Linearly interpolate delays. | 335 // Linearly interpolate delays. |
336 frameDelayL = (1.0 - azimuthBlend) * frameDelayL + azimuthBlend * frameDelay
2L; | 336 frameDelayL = (1.0 - azimuthBlend) * frameDelayL + azimuthBlend * frameDelay
2L; |
337 frameDelayR = (1.0 - azimuthBlend) * frameDelayR + azimuthBlend * frameDelay
2R; | 337 frameDelayR = (1.0 - azimuthBlend) * frameDelayR + azimuthBlend * frameDelay
2R; |
338 } | 338 } |
339 | 339 |
340 } // namespace WebCore | 340 } // namespace blink |
341 | 341 |
342 #endif // ENABLE(WEB_AUDIO) | 342 #endif // ENABLE(WEB_AUDIO) |
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