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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 AN
Y | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN
Y |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y | 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y |
| 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N | 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N |
| 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 23 */ | 23 */ |
| 24 | 24 |
| 25 #include "modules/webaudio/BiquadDSPKernel.h" |
| 25 #include "modules/webaudio/BiquadProcessor.h" | 26 #include "modules/webaudio/BiquadProcessor.h" |
| 26 #include "modules/webaudio/BiquadDSPKernel.h" | 27 #include "wtf/PtrUtil.h" |
| 28 #include <memory> |
| 27 | 29 |
| 28 namespace blink { | 30 namespace blink { |
| 29 | 31 |
| 30 BiquadProcessor::BiquadProcessor(float sampleRate, size_t numberOfChannels, Audi
oParamHandler& frequency, AudioParamHandler& q, AudioParamHandler& gain, AudioPa
ramHandler& detune) | 32 BiquadProcessor::BiquadProcessor(float sampleRate, size_t numberOfChannels, Audi
oParamHandler& frequency, AudioParamHandler& q, AudioParamHandler& gain, AudioPa
ramHandler& detune) |
| 31 : AudioDSPKernelProcessor(sampleRate, numberOfChannels) | 33 : AudioDSPKernelProcessor(sampleRate, numberOfChannels) |
| 32 , m_type(LowPass) | 34 , m_type(LowPass) |
| 33 , m_parameter1(frequency) | 35 , m_parameter1(frequency) |
| 34 , m_parameter2(q) | 36 , m_parameter2(q) |
| 35 , m_parameter3(gain) | 37 , m_parameter3(gain) |
| 36 , m_parameter4(detune) | 38 , m_parameter4(detune) |
| 37 , m_filterCoefficientsDirty(true) | 39 , m_filterCoefficientsDirty(true) |
| 38 , m_hasSampleAccurateValues(false) | 40 , m_hasSampleAccurateValues(false) |
| 39 { | 41 { |
| 40 } | 42 } |
| 41 | 43 |
| 42 BiquadProcessor::~BiquadProcessor() | 44 BiquadProcessor::~BiquadProcessor() |
| 43 { | 45 { |
| 44 if (isInitialized()) | 46 if (isInitialized()) |
| 45 uninitialize(); | 47 uninitialize(); |
| 46 } | 48 } |
| 47 | 49 |
| 48 PassOwnPtr<AudioDSPKernel> BiquadProcessor::createKernel() | 50 std::unique_ptr<AudioDSPKernel> BiquadProcessor::createKernel() |
| 49 { | 51 { |
| 50 return adoptPtr(new BiquadDSPKernel(this)); | 52 return wrapUnique(new BiquadDSPKernel(this)); |
| 51 } | 53 } |
| 52 | 54 |
| 53 void BiquadProcessor::checkForDirtyCoefficients() | 55 void BiquadProcessor::checkForDirtyCoefficients() |
| 54 { | 56 { |
| 55 // Deal with smoothing / de-zippering. Start out assuming filter parameters
are not changing. | 57 // Deal with smoothing / de-zippering. Start out assuming filter parameters
are not changing. |
| 56 | 58 |
| 57 // The BiquadDSPKernel objects rely on this value to see if they need to re-
compute their internal filter coefficients. | 59 // The BiquadDSPKernel objects rely on this value to see if they need to re-
compute their internal filter coefficients. |
| 58 m_filterCoefficientsDirty = false; | 60 m_filterCoefficientsDirty = false; |
| 59 m_hasSampleAccurateValues = false; | 61 m_hasSampleAccurateValues = false; |
| 60 | 62 |
| (...skipping 42 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 103 reset(); // The filter state must be reset only if the type has changed. | 105 reset(); // The filter state must be reset only if the type has changed. |
| 104 } | 106 } |
| 105 } | 107 } |
| 106 | 108 |
| 107 void BiquadProcessor::getFrequencyResponse(int nFrequencies, const float* freque
ncyHz, float* magResponse, float* phaseResponse) | 109 void BiquadProcessor::getFrequencyResponse(int nFrequencies, const float* freque
ncyHz, float* magResponse, float* phaseResponse) |
| 108 { | 110 { |
| 109 // Compute the frequency response on a separate temporary kernel | 111 // Compute the frequency response on a separate temporary kernel |
| 110 // to avoid interfering with the processing running in the audio | 112 // to avoid interfering with the processing running in the audio |
| 111 // thread on the main kernels. | 113 // thread on the main kernels. |
| 112 | 114 |
| 113 OwnPtr<BiquadDSPKernel> responseKernel = adoptPtr(new BiquadDSPKernel(this))
; | 115 std::unique_ptr<BiquadDSPKernel> responseKernel = wrapUnique(new BiquadDSPKe
rnel(this)); |
| 114 responseKernel->getFrequencyResponse(nFrequencies, frequencyHz, magResponse,
phaseResponse); | 116 responseKernel->getFrequencyResponse(nFrequencies, frequencyHz, magResponse,
phaseResponse); |
| 115 } | 117 } |
| 116 | 118 |
| 117 } // namespace blink | 119 } // namespace blink |
| 118 | 120 |
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