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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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22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 "platform/audio/HRTFDatabase.h" | 29 #include "platform/audio/HRTFDatabase.h" |
30 | 30 |
31 #include "wtf/MathExtras.h" | 31 #include "wtf/MathExtras.h" |
| 32 #include "wtf/PtrUtil.h" |
| 33 #include <memory> |
32 | 34 |
33 namespace blink { | 35 namespace blink { |
34 | 36 |
35 const int HRTFDatabase::MinElevation = -45; | 37 const int HRTFDatabase::MinElevation = -45; |
36 const int HRTFDatabase::MaxElevation = 90; | 38 const int HRTFDatabase::MaxElevation = 90; |
37 const unsigned HRTFDatabase::RawElevationAngleSpacing = 15; | 39 const unsigned HRTFDatabase::RawElevationAngleSpacing = 15; |
38 const unsigned HRTFDatabase::NumberOfRawElevations = 10; // -45 -> +90 (each 15
degrees) | 40 const unsigned HRTFDatabase::NumberOfRawElevations = 10; // -45 -> +90 (each 15
degrees) |
39 const unsigned HRTFDatabase::InterpolationFactor = 1; | 41 const unsigned HRTFDatabase::InterpolationFactor = 1; |
40 const unsigned HRTFDatabase::NumberOfTotalElevations = NumberOfRawElevations * I
nterpolationFactor; | 42 const unsigned HRTFDatabase::NumberOfTotalElevations = NumberOfRawElevations * I
nterpolationFactor; |
41 | 43 |
42 PassOwnPtr<HRTFDatabase> HRTFDatabase::create(float sampleRate) | 44 std::unique_ptr<HRTFDatabase> HRTFDatabase::create(float sampleRate) |
43 { | 45 { |
44 return adoptPtr(new HRTFDatabase(sampleRate)); | 46 return wrapUnique(new HRTFDatabase(sampleRate)); |
45 } | 47 } |
46 | 48 |
47 HRTFDatabase::HRTFDatabase(float sampleRate) | 49 HRTFDatabase::HRTFDatabase(float sampleRate) |
48 : m_elevations(NumberOfTotalElevations) | 50 : m_elevations(NumberOfTotalElevations) |
49 , m_sampleRate(sampleRate) | 51 , m_sampleRate(sampleRate) |
50 { | 52 { |
51 unsigned elevationIndex = 0; | 53 unsigned elevationIndex = 0; |
52 for (int elevation = MinElevation; elevation <= MaxElevation; elevation += R
awElevationAngleSpacing) { | 54 for (int elevation = MinElevation; elevation <= MaxElevation; elevation += R
awElevationAngleSpacing) { |
53 OwnPtr<HRTFElevation> hrtfElevation = HRTFElevation::createForSubject("C
omposite", elevation, sampleRate); | 55 std::unique_ptr<HRTFElevation> hrtfElevation = HRTFElevation::createForS
ubject("Composite", elevation, sampleRate); |
54 ASSERT(hrtfElevation.get()); | 56 ASSERT(hrtfElevation.get()); |
55 if (!hrtfElevation.get()) | 57 if (!hrtfElevation.get()) |
56 return; | 58 return; |
57 | 59 |
58 m_elevations[elevationIndex] = std::move(hrtfElevation); | 60 m_elevations[elevationIndex] = std::move(hrtfElevation); |
59 elevationIndex += InterpolationFactor; | 61 elevationIndex += InterpolationFactor; |
60 } | 62 } |
61 | 63 |
62 // Now, go back and interpolate elevations. | 64 // Now, go back and interpolate elevations. |
63 if (InterpolationFactor > 1) { | 65 if (InterpolationFactor > 1) { |
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106 { | 108 { |
107 // Clamp to allowed range. | 109 // Clamp to allowed range. |
108 elevationAngle = clampTo<double, double>(elevationAngle, MinElevation, MaxEl
evation); | 110 elevationAngle = clampTo<double, double>(elevationAngle, MinElevation, MaxEl
evation); |
109 | 111 |
110 unsigned elevationIndex = static_cast<int>(InterpolationFactor * (elevationA
ngle - MinElevation) / RawElevationAngleSpacing); | 112 unsigned elevationIndex = static_cast<int>(InterpolationFactor * (elevationA
ngle - MinElevation) / RawElevationAngleSpacing); |
111 return elevationIndex; | 113 return elevationIndex; |
112 } | 114 } |
113 | 115 |
114 } // namespace blink | 116 } // namespace blink |
115 | 117 |
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