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Side by Side Diff: third_party/WebKit/Source/platform/audio/AudioDelayDSPKernel.cpp

Issue 2384073002: reflow comments in platform/audio (Closed)
Patch Set: comments (heh!) Created 4 years, 2 months ago
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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
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN Y 16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O N 19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
23 * DAMAGE.
23 */ 24 */
24 25
25 #include "platform/audio/AudioDelayDSPKernel.h" 26 #include "platform/audio/AudioDelayDSPKernel.h"
26 #include "platform/audio/AudioUtilities.h" 27 #include "platform/audio/AudioUtilities.h"
27 #include "wtf/MathExtras.h" 28 #include "wtf/MathExtras.h"
28 #include <cmath> 29 #include <cmath>
29 30
30 namespace blink { 31 namespace blink {
31 32
32 const float SmoothingTimeConstant = 0.020f; // 20ms 33 const float SmoothingTimeConstant = 0.020f; // 20ms
(...skipping 21 matching lines...) Expand all
54 55
55 m_buffer.allocate(bufferLength); 56 m_buffer.allocate(bufferLength);
56 m_buffer.zero(); 57 m_buffer.zero();
57 58
58 m_smoothingRate = AudioUtilities::discreteTimeConstantForSampleRate( 59 m_smoothingRate = AudioUtilities::discreteTimeConstantForSampleRate(
59 SmoothingTimeConstant, sampleRate); 60 SmoothingTimeConstant, sampleRate);
60 } 61 }
61 62
62 size_t AudioDelayDSPKernel::bufferLengthForDelay(double maxDelayTime, 63 size_t AudioDelayDSPKernel::bufferLengthForDelay(double maxDelayTime,
63 double sampleRate) const { 64 double sampleRate) const {
64 // Compute the length of the buffer needed to handle a max delay of |maxDelayT ime|. One is 65 // Compute the length of the buffer needed to handle a max delay of
65 // added to handle the case where the actual delay equals the maximum delay. 66 // |maxDelayTime|. One is added to handle the case where the actual delay
67 // equals the maximum delay.
66 return 1 + AudioUtilities::timeToSampleFrame(maxDelayTime, sampleRate); 68 return 1 + AudioUtilities::timeToSampleFrame(maxDelayTime, sampleRate);
67 } 69 }
68 70
69 bool AudioDelayDSPKernel::hasSampleAccurateValues() { 71 bool AudioDelayDSPKernel::hasSampleAccurateValues() {
70 return false; 72 return false;
71 } 73 }
72 74
73 void AudioDelayDSPKernel::calculateSampleAccurateValues(float*, size_t) { 75 void AudioDelayDSPKernel::calculateSampleAccurateValues(float*, size_t) {
74 ASSERT_NOT_REACHED(); 76 ASSERT_NOT_REACHED();
75 } 77 }
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160 // Account for worst case delay. 162 // Account for worst case delay.
161 // 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.
162 return m_maxDelayTime; 164 return m_maxDelayTime;
163 } 165 }
164 166
165 double AudioDelayDSPKernel::latencyTime() const { 167 double AudioDelayDSPKernel::latencyTime() const {
166 return 0; 168 return 0;
167 } 169 }
168 170
169 } // namespace blink 171 } // namespace blink
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