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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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| 94 // Synchronize with process() to protect m_sourceNumberOfChannels, | 94 // Synchronize with process() to protect m_sourceNumberOfChannels, |
| 95 // m_sourceSampleRate, and m_multiChannelResampler. | 95 // m_sourceSampleRate, and m_multiChannelResampler. |
| 96 Locker<MediaElementAudioSourceHandler> locker(*this); | 96 Locker<MediaElementAudioSourceHandler> locker(*this); |
| 97 | 97 |
| 98 m_sourceNumberOfChannels = numberOfChannels; | 98 m_sourceNumberOfChannels = numberOfChannels; |
| 99 m_sourceSampleRate = sourceSampleRate; | 99 m_sourceSampleRate = sourceSampleRate; |
| 100 | 100 |
| 101 if (sourceSampleRate != sampleRate()) { | 101 if (sourceSampleRate != sampleRate()) { |
| 102 double scaleFactor = sourceSampleRate / sampleRate(); | 102 double scaleFactor = sourceSampleRate / sampleRate(); |
| 103 m_multiChannelResampler = | 103 m_multiChannelResampler = |
| 104 makeUnique<MultiChannelResampler>(scaleFactor, numberOfChannels); | 104 WTF::makeUnique<MultiChannelResampler>(scaleFactor, numberOfChannels); |
| 105 } else { | 105 } else { |
| 106 // Bypass resampling. | 106 // Bypass resampling. |
| 107 m_multiChannelResampler.reset(); | 107 m_multiChannelResampler.reset(); |
| 108 } | 108 } |
| 109 | 109 |
| 110 { | 110 { |
| 111 // The context must be locked when changing the number of output channels. | 111 // The context must be locked when changing the number of output channels. |
| 112 BaseAudioContext::AutoLocker contextLocker(context()); | 112 BaseAudioContext::AutoLocker contextLocker(context()); |
| 113 | 113 |
| 114 // Do any necesssary re-configuration to the output's number of channels. | 114 // Do any necesssary re-configuration to the output's number of channels. |
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| 294 | 294 |
| 295 void MediaElementAudioSourceNode::lock() { | 295 void MediaElementAudioSourceNode::lock() { |
| 296 mediaElementAudioSourceHandler().lock(); | 296 mediaElementAudioSourceHandler().lock(); |
| 297 } | 297 } |
| 298 | 298 |
| 299 void MediaElementAudioSourceNode::unlock() { | 299 void MediaElementAudioSourceNode::unlock() { |
| 300 mediaElementAudioSourceHandler().unlock(); | 300 mediaElementAudioSourceHandler().unlock(); |
| 301 } | 301 } |
| 302 | 302 |
| 303 } // namespace blink | 303 } // namespace blink |
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