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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/AudioBus.h" | 29 #include "platform/audio/AudioBus.h" |
| 30 #include <assert.h> |
| 31 #include <math.h> |
| 32 #include <algorithm> |
| 33 #include <memory> |
| 30 #include "platform/audio/AudioFileReader.h" | 34 #include "platform/audio/AudioFileReader.h" |
| 31 #include "platform/audio/DenormalDisabler.h" | 35 #include "platform/audio/DenormalDisabler.h" |
| 32 #include "platform/audio/SincResampler.h" | 36 #include "platform/audio/SincResampler.h" |
| 33 #include "platform/audio/VectorMath.h" | 37 #include "platform/audio/VectorMath.h" |
| 34 #include "public/platform/Platform.h" | 38 #include "public/platform/Platform.h" |
| 35 #include "public/platform/WebAudioBus.h" | 39 #include "public/platform/WebAudioBus.h" |
| 36 #include "wtf/PtrUtil.h" | 40 #include "wtf/PtrUtil.h" |
| 37 #include <algorithm> | |
| 38 #include <assert.h> | |
| 39 #include <math.h> | |
| 40 #include <memory> | |
| 41 | 41 |
| 42 namespace blink { | 42 namespace blink { |
| 43 | 43 |
| 44 using namespace VectorMath; | 44 using namespace VectorMath; |
| 45 | 45 |
| 46 const unsigned MaxBusChannels = 32; | 46 const unsigned MaxBusChannels = 32; |
| 47 | 47 |
| 48 PassRefPtr<AudioBus> AudioBus::create(unsigned numberOfChannels, | 48 PassRefPtr<AudioBus> AudioBus::create(unsigned numberOfChannels, |
| 49 size_t length, | 49 size_t length, |
| 50 bool allocate) { | 50 bool allocate) { |
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| 758 // If the bus needs no conversion then return as is. | 758 // If the bus needs no conversion then return as is. |
| 759 if ((!mixToMono || audioBus->numberOfChannels() == 1) && | 759 if ((!mixToMono || audioBus->numberOfChannels() == 1) && |
| 760 audioBus->sampleRate() == sampleRate) | 760 audioBus->sampleRate() == sampleRate) |
| 761 return audioBus; | 761 return audioBus; |
| 762 | 762 |
| 763 return AudioBus::createBySampleRateConverting(audioBus.get(), mixToMono, | 763 return AudioBus::createBySampleRateConverting(audioBus.get(), mixToMono, |
| 764 sampleRate); | 764 sampleRate); |
| 765 } | 765 } |
| 766 | 766 |
| 767 } // namespace blink | 767 } // namespace blink |
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