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Side by Side Diff: Source/platform/audio/HRTFKernel.cpp

Issue 400543004: Rename WebCore namespace to blink in Platform (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 6 years, 5 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 * 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
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31 #if ENABLE(WEB_AUDIO) 31 #if ENABLE(WEB_AUDIO)
32 32
33 #include "platform/audio/HRTFKernel.h" 33 #include "platform/audio/HRTFKernel.h"
34 34
35 #include "platform/audio/AudioChannel.h" 35 #include "platform/audio/AudioChannel.h"
36 #include "platform/FloatConversion.h" 36 #include "platform/FloatConversion.h"
37 #include "wtf/MathExtras.h" 37 #include "wtf/MathExtras.h"
38 38
39 using namespace std; 39 using namespace std;
40 40
41 namespace WebCore { 41 namespace blink {
42 42
43 // Takes the input AudioChannel as an input impulse response and calculates the average group delay. 43 // Takes the input AudioChannel as an input impulse response and calculates the average group delay.
44 // This represents the initial delay before the most energetic part of the impul se response. 44 // This represents the initial delay before the most energetic part of the impul se response.
45 // The sample-frame delay is removed from the impulseP impulse response, and thi s value is returned. 45 // The sample-frame delay is removed from the impulseP impulse response, and thi s value is returned.
46 // the length of the passed in AudioChannel must be a power of 2. 46 // the length of the passed in AudioChannel must be a power of 2.
47 static float extractAverageGroupDelay(AudioChannel* channel, size_t analysisFFTS ize) 47 static float extractAverageGroupDelay(AudioChannel* channel, size_t analysisFFTS ize)
48 { 48 {
49 ASSERT(channel); 49 ASSERT(channel);
50 50
51 float* impulseP = channel->mutableData(); 51 float* impulseP = channel->mutableData();
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123 ASSERT(sampleRate1 == sampleRate2); 123 ASSERT(sampleRate1 == sampleRate2);
124 if (sampleRate1 != sampleRate2) 124 if (sampleRate1 != sampleRate2)
125 return nullptr; 125 return nullptr;
126 126
127 float frameDelay = (1 - x) * kernel1->frameDelay() + x * kernel2->frameDelay (); 127 float frameDelay = (1 - x) * kernel1->frameDelay() + x * kernel2->frameDelay ();
128 128
129 OwnPtr<FFTFrame> interpolatedFrame = FFTFrame::createInterpolatedFrame(*kern el1->fftFrame(), *kernel2->fftFrame(), x); 129 OwnPtr<FFTFrame> interpolatedFrame = FFTFrame::createInterpolatedFrame(*kern el1->fftFrame(), *kernel2->fftFrame(), x);
130 return HRTFKernel::create(interpolatedFrame.release(), frameDelay, sampleRat e1); 130 return HRTFKernel::create(interpolatedFrame.release(), frameDelay, sampleRat e1);
131 } 131 }
132 132
133 } // namespace WebCore 133 } // namespace blink
134 134
135 #endif // ENABLE(WEB_AUDIO) 135 #endif // ENABLE(WEB_AUDIO)
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