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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 * | 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/DynamicsCompressorKernel.h" |
| 30 #include <algorithm> |
| 31 #include <cmath> |
| 29 #include "platform/audio/AudioUtilities.h" | 32 #include "platform/audio/AudioUtilities.h" |
| 30 #include "platform/audio/DenormalDisabler.h" | 33 #include "platform/audio/DenormalDisabler.h" |
| 31 #include "platform/audio/DynamicsCompressorKernel.h" | |
| 32 #include "wtf/MathExtras.h" | 34 #include "wtf/MathExtras.h" |
| 33 #include "wtf/PtrUtil.h" | 35 #include "wtf/PtrUtil.h" |
| 34 #include <algorithm> | |
| 35 #include <cmath> | |
| 36 | 36 |
| 37 namespace blink { | 37 namespace blink { |
| 38 | 38 |
| 39 using namespace AudioUtilities; | 39 using namespace AudioUtilities; |
| 40 | 40 |
| 41 // Metering hits peaks instantly, but releases this fast (in seconds). | 41 // Metering hits peaks instantly, but releases this fast (in seconds). |
| 42 const float meteringReleaseTimeConstant = 0.325f; | 42 const float meteringReleaseTimeConstant = 0.325f; |
| 43 | 43 |
| 44 const float uninitializedValue = -1; | 44 const float uninitializedValue = -1; |
| 45 | 45 |
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| 481 for (unsigned i = 0; i < m_preDelayBuffers.size(); ++i) | 481 for (unsigned i = 0; i < m_preDelayBuffers.size(); ++i) |
| 482 m_preDelayBuffers[i]->zero(); | 482 m_preDelayBuffers[i]->zero(); |
| 483 | 483 |
| 484 m_preDelayReadIndex = 0; | 484 m_preDelayReadIndex = 0; |
| 485 m_preDelayWriteIndex = DefaultPreDelayFrames; | 485 m_preDelayWriteIndex = DefaultPreDelayFrames; |
| 486 | 486 |
| 487 m_maxAttackCompressionDiffDb = -1; // uninitialized state | 487 m_maxAttackCompressionDiffDb = -1; // uninitialized state |
| 488 } | 488 } |
| 489 | 489 |
| 490 } // namespace blink | 490 } // namespace blink |
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