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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 |
11 * notice, this list of conditions and the following disclaimer in the | 11 * notice, this list of conditions and the following disclaimer in the |
12 * documentation and/or other materials provided with the distribution. | 12 * documentation and/or other materials provided with the distribution. |
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of | 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
14 * its contributors may be used to endorse or promote products derived | 14 * its contributors may be used to endorse or promote products derived |
15 * from this software without specific prior written permission. | 15 * from this software without specific prior written permission. |
16 * | 16 * |
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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/Distance.h" | 29 #include "platform/audio/Distance.h" |
| 30 #include <math.h> |
| 31 #include <algorithm> |
30 #include "wtf/Assertions.h" | 32 #include "wtf/Assertions.h" |
31 #include "wtf/MathExtras.h" | 33 #include "wtf/MathExtras.h" |
32 #include <math.h> | |
33 #include <algorithm> | |
34 | 34 |
35 namespace blink { | 35 namespace blink { |
36 | 36 |
37 DistanceEffect::DistanceEffect() | 37 DistanceEffect::DistanceEffect() |
38 : m_model(ModelInverse), | 38 : m_model(ModelInverse), |
39 m_refDistance(1.0), | 39 m_refDistance(1.0), |
40 m_maxDistance(10000.0), | 40 m_maxDistance(10000.0), |
41 m_rolloffFactor(1.0) {} | 41 m_rolloffFactor(1.0) {} |
42 | 42 |
43 double DistanceEffect::gain(double distance) { | 43 double DistanceEffect::gain(double distance) { |
(...skipping 25 matching lines...) Expand all Loading... |
69 return m_refDistance / | 69 return m_refDistance / |
70 (m_refDistance + | 70 (m_refDistance + |
71 clampTo(m_rolloffFactor, 0.0) * (distance - m_refDistance)); | 71 clampTo(m_rolloffFactor, 0.0) * (distance - m_refDistance)); |
72 } | 72 } |
73 | 73 |
74 double DistanceEffect::exponentialGain(double distance) { | 74 double DistanceEffect::exponentialGain(double distance) { |
75 return pow(distance / m_refDistance, -clampTo(m_rolloffFactor, 0.0)); | 75 return pow(distance / m_refDistance, -clampTo(m_rolloffFactor, 0.0)); |
76 } | 76 } |
77 | 77 |
78 } // namespace blink | 78 } // namespace blink |
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