| OLD | NEW |
| 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 |
| (...skipping 14 matching lines...) Expand all Loading... |
| 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 */ | 27 */ |
| 28 | 28 |
| 29 #include "config.h" | 29 #include "config.h" |
| 30 | 30 |
| 31 #if ENABLE(WEB_AUDIO) | 31 #if ENABLE(WEB_AUDIO) |
| 32 | 32 |
| 33 #include "platform/audio/HRTFDatabase.h" | 33 #include "platform/audio/HRTFDatabase.h" |
| 34 | 34 |
| 35 #include "wtf/MathExtras.h" |
| 36 |
| 35 namespace blink { | 37 namespace blink { |
| 36 | 38 |
| 37 const int HRTFDatabase::MinElevation = -45; | 39 const int HRTFDatabase::MinElevation = -45; |
| 38 const int HRTFDatabase::MaxElevation = 90; | 40 const int HRTFDatabase::MaxElevation = 90; |
| 39 const unsigned HRTFDatabase::RawElevationAngleSpacing = 15; | 41 const unsigned HRTFDatabase::RawElevationAngleSpacing = 15; |
| 40 const unsigned HRTFDatabase::NumberOfRawElevations = 10; // -45 -> +90 (each 15
degrees) | 42 const unsigned HRTFDatabase::NumberOfRawElevations = 10; // -45 -> +90 (each 15
degrees) |
| 41 const unsigned HRTFDatabase::InterpolationFactor = 1; | 43 const unsigned HRTFDatabase::InterpolationFactor = 1; |
| 42 const unsigned HRTFDatabase::NumberOfTotalElevations = NumberOfRawElevations * I
nterpolationFactor; | 44 const unsigned HRTFDatabase::NumberOfTotalElevations = NumberOfRawElevations * I
nterpolationFactor; |
| 43 | 45 |
| 44 PassOwnPtr<HRTFDatabase> HRTFDatabase::create(float sampleRate) | 46 PassOwnPtr<HRTFDatabase> HRTFDatabase::create(float sampleRate) |
| (...skipping 56 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 101 kernelR = 0; | 103 kernelR = 0; |
| 102 return; | 104 return; |
| 103 } | 105 } |
| 104 | 106 |
| 105 hrtfElevation->getKernelsFromAzimuth(azimuthBlend, azimuthIndex, kernelL, ke
rnelR, frameDelayL, frameDelayR); | 107 hrtfElevation->getKernelsFromAzimuth(azimuthBlend, azimuthIndex, kernelL, ke
rnelR, frameDelayL, frameDelayR); |
| 106 } | 108 } |
| 107 | 109 |
| 108 unsigned HRTFDatabase::indexFromElevationAngle(double elevationAngle) | 110 unsigned HRTFDatabase::indexFromElevationAngle(double elevationAngle) |
| 109 { | 111 { |
| 110 // Clamp to allowed range. | 112 // Clamp to allowed range. |
| 111 elevationAngle = std::max(static_cast<double>(MinElevation), elevationAngle)
; | 113 elevationAngle = clampTo<double, double>(elevationAngle, MinElevation, MaxEl
evation); |
| 112 elevationAngle = std::min(static_cast<double>(MaxElevation), elevationAngle)
; | |
| 113 | 114 |
| 114 unsigned elevationIndex = static_cast<int>(InterpolationFactor * (elevationA
ngle - MinElevation) / RawElevationAngleSpacing); | 115 unsigned elevationIndex = static_cast<int>(InterpolationFactor * (elevationA
ngle - MinElevation) / RawElevationAngleSpacing); |
| 115 return elevationIndex; | 116 return elevationIndex; |
| 116 } | 117 } |
| 117 | 118 |
| 118 } // namespace blink | 119 } // namespace blink |
| 119 | 120 |
| 120 #endif // ENABLE(WEB_AUDIO) | 121 #endif // ENABLE(WEB_AUDIO) |
| OLD | NEW |