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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/AudioDelayDSPKernel.h" | 26 #include "platform/audio/AudioDelayDSPKernel.h" |
| 27 #include <cmath> |
| 27 #include "platform/audio/AudioUtilities.h" | 28 #include "platform/audio/AudioUtilities.h" |
| 28 #include "wtf/MathExtras.h" | 29 #include "wtf/MathExtras.h" |
| 29 #include <cmath> | |
| 30 | 30 |
| 31 namespace blink { | 31 namespace blink { |
| 32 | 32 |
| 33 const float SmoothingTimeConstant = 0.020f; // 20ms | 33 const float SmoothingTimeConstant = 0.020f; // 20ms |
| 34 | 34 |
| 35 AudioDelayDSPKernel::AudioDelayDSPKernel(AudioDSPKernelProcessor* processor, | 35 AudioDelayDSPKernel::AudioDelayDSPKernel(AudioDSPKernelProcessor* processor, |
| 36 size_t processingSizeInFrames) | 36 size_t processingSizeInFrames) |
| 37 : AudioDSPKernel(processor), | 37 : AudioDSPKernel(processor), |
| 38 m_writeIndex(0), | 38 m_writeIndex(0), |
| 39 m_firstTime(true), | 39 m_firstTime(true), |
| (...skipping 122 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 162 // Account for worst case delay. | 162 // Account for worst case delay. |
| 163 // Don't try to track actual delay time which can change dynamically. | 163 // Don't try to track actual delay time which can change dynamically. |
| 164 return m_maxDelayTime; | 164 return m_maxDelayTime; |
| 165 } | 165 } |
| 166 | 166 |
| 167 double AudioDelayDSPKernel::latencyTime() const { | 167 double AudioDelayDSPKernel::latencyTime() const { |
| 168 return 0; | 168 return 0; |
| 169 } | 169 } |
| 170 | 170 |
| 171 } // namespace blink | 171 } // namespace blink |
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