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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 |
| 11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
| 12 * | 12 * |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND |
| 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE | 16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE |
| 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| 19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | 19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| 20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | 20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| 23 * DAMAGE. | 23 * DAMAGE. |
| 24 */ | 24 */ |
| 25 | 25 |
| 26 #include "platform/audio/AudioResampler.h" | 26 #include "platform/audio/AudioResampler.h" |
| 27 #include <algorithm> |
| 27 #include "wtf/MathExtras.h" | 28 #include "wtf/MathExtras.h" |
| 28 #include "wtf/PtrUtil.h" | 29 #include "wtf/PtrUtil.h" |
| 29 #include <algorithm> | |
| 30 | 30 |
| 31 namespace blink { | 31 namespace blink { |
| 32 | 32 |
| 33 const double AudioResampler::MaxRate = 8.0; | 33 const double AudioResampler::MaxRate = 8.0; |
| 34 | 34 |
| 35 AudioResampler::AudioResampler() : m_rate(1.0) { | 35 AudioResampler::AudioResampler() : m_rate(1.0) { |
| 36 m_kernels.push_back(WTF::makeUnique<AudioResamplerKernel>(this)); | 36 m_kernels.push_back(WTF::makeUnique<AudioResamplerKernel>(this)); |
| 37 m_sourceBus = AudioBus::create(1, 0, false); | 37 m_sourceBus = AudioBus::create(1, 0, false); |
| 38 } | 38 } |
| 39 | 39 |
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| 110 m_rate = std::min(AudioResampler::MaxRate, rate); | 110 m_rate = std::min(AudioResampler::MaxRate, rate); |
| 111 } | 111 } |
| 112 | 112 |
| 113 void AudioResampler::reset() { | 113 void AudioResampler::reset() { |
| 114 unsigned numberOfChannels = m_kernels.size(); | 114 unsigned numberOfChannels = m_kernels.size(); |
| 115 for (unsigned i = 0; i < numberOfChannels; ++i) | 115 for (unsigned i = 0; i < numberOfChannels; ++i) |
| 116 m_kernels[i]->reset(); | 116 m_kernels[i]->reset(); |
| 117 } | 117 } |
| 118 | 118 |
| 119 } // namespace blink | 119 } // namespace blink |
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