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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 "modules/webaudio/AudioBufferSourceNode.h" |
| 27 #include <algorithm> |
| 26 #include "bindings/core/v8/ExceptionMessages.h" | 28 #include "bindings/core/v8/ExceptionMessages.h" |
| 27 #include "bindings/core/v8/ExceptionState.h" | 29 #include "bindings/core/v8/ExceptionState.h" |
| 28 #include "core/dom/ExceptionCode.h" | 30 #include "core/dom/ExceptionCode.h" |
| 29 #include "core/frame/UseCounter.h" | 31 #include "core/frame/UseCounter.h" |
| 30 #include "modules/webaudio/AudioBufferSourceNode.h" | |
| 31 #include "modules/webaudio/AudioBufferSourceOptions.h" | 32 #include "modules/webaudio/AudioBufferSourceOptions.h" |
| 32 #include "modules/webaudio/AudioNodeOutput.h" | 33 #include "modules/webaudio/AudioNodeOutput.h" |
| 33 #include "modules/webaudio/BaseAudioContext.h" | 34 #include "modules/webaudio/BaseAudioContext.h" |
| 34 #include "platform/audio/AudioUtilities.h" | 35 #include "platform/audio/AudioUtilities.h" |
| 35 #include "wtf/MathExtras.h" | 36 #include "wtf/MathExtras.h" |
| 36 #include "wtf/PtrUtil.h" | 37 #include "wtf/PtrUtil.h" |
| 37 #include <algorithm> | |
| 38 | 38 |
| 39 namespace blink { | 39 namespace blink { |
| 40 | 40 |
| 41 const double DefaultGrainDuration = 0.020; // 20ms | 41 const double DefaultGrainDuration = 0.020; // 20ms |
| 42 | 42 |
| 43 // Arbitrary upper limit on playback rate. | 43 // Arbitrary upper limit on playback rate. |
| 44 // Higher than expected rates can be useful when playing back oversampled | 44 // Higher than expected rates can be useful when playing back oversampled |
| 45 // buffers to minimize linear interpolation aliasing. | 45 // buffers to minimize linear interpolation aliasing. |
| 46 const double MaxRate = 1024; | 46 const double MaxRate = 1024; |
| 47 | 47 |
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| 755 | 755 |
| 756 void AudioBufferSourceNode::start(double when, | 756 void AudioBufferSourceNode::start(double when, |
| 757 double grainOffset, | 757 double grainOffset, |
| 758 double grainDuration, | 758 double grainDuration, |
| 759 ExceptionState& exceptionState) { | 759 ExceptionState& exceptionState) { |
| 760 audioBufferSourceHandler().start(when, grainOffset, grainDuration, | 760 audioBufferSourceHandler().start(when, grainOffset, grainDuration, |
| 761 exceptionState); | 761 exceptionState); |
| 762 } | 762 } |
| 763 | 763 |
| 764 } // namespace blink | 764 } // namespace blink |
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