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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 |
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27 #include "wtf/MathExtras.h" | 27 #include "wtf/MathExtras.h" |
28 #include <algorithm> | 28 #include <algorithm> |
29 | 29 |
30 namespace blink { | 30 namespace blink { |
31 | 31 |
32 const float SmoothingTimeConstant = 0.020f; // 20ms | 32 const float SmoothingTimeConstant = 0.020f; // 20ms |
33 | 33 |
34 DelayDSPKernel::DelayDSPKernel(DelayProcessor* processor) | 34 DelayDSPKernel::DelayDSPKernel(DelayProcessor* processor) |
35 : AudioDelayDSPKernel(processor, AudioHandler::ProcessingSizeInFrames) | 35 : AudioDelayDSPKernel(processor, AudioHandler::ProcessingSizeInFrames) |
36 { | 36 { |
37 ASSERT(processor); | 37 DCHECK(processor); |
38 ASSERT(processor->sampleRate() > 0); | 38 DCHECK_GT(processor->sampleRate(), 0); |
39 if (!(processor && processor->sampleRate() > 0)) | 39 if (!(processor && processor->sampleRate() > 0)) |
40 return; | 40 return; |
41 | 41 |
42 m_maxDelayTime = processor->maxDelayTime(); | 42 m_maxDelayTime = processor->maxDelayTime(); |
43 ASSERT(m_maxDelayTime >= 0); | 43 DCHECK_GE(m_maxDelayTime, 0); |
44 ASSERT(!std::isnan(m_maxDelayTime)); | 44 DCHECK(!std::isnan(m_maxDelayTime)); |
45 if (m_maxDelayTime < 0 || std::isnan(m_maxDelayTime)) | 45 if (m_maxDelayTime < 0 || std::isnan(m_maxDelayTime)) |
46 return; | 46 return; |
47 | 47 |
48 m_buffer.allocate(bufferLengthForDelay(m_maxDelayTime, processor->sampleRate
())); | 48 m_buffer.allocate(bufferLengthForDelay(m_maxDelayTime, processor->sampleRate
())); |
49 m_buffer.zero(); | 49 m_buffer.zero(); |
50 | 50 |
51 m_smoothingRate = AudioUtilities::discreteTimeConstantForSampleRate(Smoothin
gTimeConstant, processor->sampleRate()); | 51 m_smoothingRate = AudioUtilities::discreteTimeConstantForSampleRate(Smoothin
gTimeConstant, processor->sampleRate()); |
52 } | 52 } |
53 | 53 |
54 bool DelayDSPKernel::hasSampleAccurateValues() | 54 bool DelayDSPKernel::hasSampleAccurateValues() |
55 { | 55 { |
56 return getDelayProcessor()->delayTime().hasSampleAccurateValues(); | 56 return getDelayProcessor()->delayTime().hasSampleAccurateValues(); |
57 } | 57 } |
58 | 58 |
59 void DelayDSPKernel::calculateSampleAccurateValues(float* delayTimes, size_t fra
mesToProcess) | 59 void DelayDSPKernel::calculateSampleAccurateValues(float* delayTimes, size_t fra
mesToProcess) |
60 { | 60 { |
61 getDelayProcessor()->delayTime().calculateSampleAccurateValues(delayTimes, f
ramesToProcess); | 61 getDelayProcessor()->delayTime().calculateSampleAccurateValues(delayTimes, f
ramesToProcess); |
62 } | 62 } |
63 | 63 |
64 double DelayDSPKernel::delayTime(float) | 64 double DelayDSPKernel::delayTime(float) |
65 { | 65 { |
66 return getDelayProcessor()->delayTime().finalValue(); | 66 return getDelayProcessor()->delayTime().finalValue(); |
67 } | 67 } |
68 | 68 |
69 } // namespace blink | 69 } // namespace blink |
70 | 70 |
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