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1 /* | 1 /* |
2 * Copyright (C) 2011, Google Inc. All rights reserved. | 2 * Copyright (C) 2011, 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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46 | 46 |
47 PassOwnPtr<AudioDSPKernel> WaveShaperProcessor::createKernel() | 47 PassOwnPtr<AudioDSPKernel> WaveShaperProcessor::createKernel() |
48 { | 48 { |
49 return adoptPtr(new WaveShaperDSPKernel(this)); | 49 return adoptPtr(new WaveShaperDSPKernel(this)); |
50 } | 50 } |
51 | 51 |
52 void WaveShaperProcessor::setCurve(Float32Array* curve) | 52 void WaveShaperProcessor::setCurve(Float32Array* curve) |
53 { | 53 { |
54 // This synchronizes with process(). | 54 // This synchronizes with process(). |
55 MutexLocker processLocker(m_processLock); | 55 MutexLocker processLocker(m_processLock); |
56 | 56 |
57 m_curve = curve; | 57 m_curve = curve; |
58 } | 58 } |
59 | 59 |
60 void WaveShaperProcessor::setOversample(OverSampleType oversample) | 60 void WaveShaperProcessor::setOversample(OverSampleType oversample) |
61 { | 61 { |
62 // This synchronizes with process(). | 62 // This synchronizes with process(). |
63 MutexLocker processLocker(m_processLock); | 63 MutexLocker processLocker(m_processLock); |
64 | 64 |
65 m_oversample = oversample; | 65 m_oversample = oversample; |
66 | 66 |
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79 return; | 79 return; |
80 } | 80 } |
81 | 81 |
82 bool channelCountMatches = source->numberOfChannels() == destination->number
OfChannels() && source->numberOfChannels() == m_kernels.size(); | 82 bool channelCountMatches = source->numberOfChannels() == destination->number
OfChannels() && source->numberOfChannels() == m_kernels.size(); |
83 ASSERT(channelCountMatches); | 83 ASSERT(channelCountMatches); |
84 if (!channelCountMatches) | 84 if (!channelCountMatches) |
85 return; | 85 return; |
86 | 86 |
87 // The audio thread can't block on this lock, so we call tryLock() instead. | 87 // The audio thread can't block on this lock, so we call tryLock() instead. |
88 MutexTryLocker tryLocker(m_processLock); | 88 MutexTryLocker tryLocker(m_processLock); |
89 if (tryLocker.locked()) { | 89 if (tryLocker.locked()) { |
90 // For each channel of our input, process using the corresponding WaveSh
aperDSPKernel into the output channel. | 90 // For each channel of our input, process using the corresponding WaveSh
aperDSPKernel into the output channel. |
91 for (unsigned i = 0; i < m_kernels.size(); ++i) | 91 for (unsigned i = 0; i < m_kernels.size(); ++i) |
92 m_kernels[i]->process(source->channel(i)->data(), destination->chann
el(i)->mutableData(), framesToProcess); | 92 m_kernels[i]->process(source->channel(i)->data(), destination->chann
el(i)->mutableData(), framesToProcess); |
93 } else { | 93 } else { |
94 // Too bad - the tryLock() failed. We must be in the middle of a setCurv
e() call. | 94 // Too bad - the tryLock() failed. We must be in the middle of a setCurv
e() call. |
95 destination->zero(); | 95 destination->zero(); |
96 } | 96 } |
97 } | 97 } |
98 | 98 |
99 } // namespace WebCore | 99 } // namespace WebCore |
100 | 100 |
101 #endif // ENABLE(WEB_AUDIO) | 101 #endif // ENABLE(WEB_AUDIO) |
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