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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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23 */ | 23 */ |
24 | 24 |
25 #include "config.h" | 25 #include "config.h" |
26 | 26 |
27 #if ENABLE(WEB_AUDIO) | 27 #if ENABLE(WEB_AUDIO) |
28 | 28 |
29 #include "platform/audio/AudioUtilities.h" | 29 #include "platform/audio/AudioUtilities.h" |
30 #include "wtf/Assertions.h" | 30 #include "wtf/Assertions.h" |
31 #include "wtf/MathExtras.h" | 31 #include "wtf/MathExtras.h" |
32 | 32 |
33 namespace WebCore { | 33 namespace blink { |
34 | 34 |
35 namespace AudioUtilities { | 35 namespace AudioUtilities { |
36 | 36 |
37 float decibelsToLinear(float decibels) | 37 float decibelsToLinear(float decibels) |
38 { | 38 { |
39 return powf(10, 0.05f * decibels); | 39 return powf(10, 0.05f * decibels); |
40 } | 40 } |
41 | 41 |
42 float linearToDecibels(float linear) | 42 float linearToDecibels(float linear) |
43 { | 43 { |
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57 | 57 |
58 size_t timeToSampleFrame(double time, double sampleRate) | 58 size_t timeToSampleFrame(double time, double sampleRate) |
59 { | 59 { |
60 return static_cast<size_t>(round(time * sampleRate)); | 60 return static_cast<size_t>(round(time * sampleRate)); |
61 } | 61 } |
62 } // AudioUtilites | 62 } // AudioUtilites |
63 | 63 |
64 } // WebCore | 64 } // WebCore |
65 | 65 |
66 #endif // ENABLE(WEB_AUDIO) | 66 #endif // ENABLE(WEB_AUDIO) |
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