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Side by Side Diff: Source/platform/audio/mac/FFTFrameMac.cpp

Issue 545773002: Change vsmul method from vDSP_ to VectorMatch. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 6 years, 3 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
(...skipping 99 matching lines...) Expand 10 before | Expand all | Expand 10 after
110 vDSP_fft_zrip(m_FFTSetup, &m_frame, 1, m_log2FFTSize, FFT_FORWARD); 110 vDSP_fft_zrip(m_FFTSetup, &m_frame, 1, m_log2FFTSize, FFT_FORWARD);
111 } 111 }
112 112
113 void FFTFrame::doInverseFFT(float* data) 113 void FFTFrame::doInverseFFT(float* data)
114 { 114 {
115 vDSP_fft_zrip(m_FFTSetup, &m_frame, 1, m_log2FFTSize, FFT_INVERSE); 115 vDSP_fft_zrip(m_FFTSetup, &m_frame, 1, m_log2FFTSize, FFT_INVERSE);
116 vDSP_ztoc(&m_frame, 1, (DSPComplex*)data, 2, m_FFTSize / 2); 116 vDSP_ztoc(&m_frame, 1, (DSPComplex*)data, 2, m_FFTSize / 2);
117 117
118 // Do final scaling so that x == IFFT(FFT(x)) 118 // Do final scaling so that x == IFFT(FFT(x))
119 float scale = 1.0f / m_FFTSize; 119 float scale = 1.0f / m_FFTSize;
120 vDSP_vsmul(data, 1, &scale, data, 1, m_FFTSize); 120 VectorMath::vsmul(data, 1, &scale, data, 1, m_FFTSize);
121 } 121 }
122 122
123 FFTSetup FFTFrame::fftSetupForSize(unsigned fftSize) 123 FFTSetup FFTFrame::fftSetupForSize(unsigned fftSize)
124 { 124 {
125 if (!fftSetups) { 125 if (!fftSetups) {
126 fftSetups = (FFTSetup*)malloc(sizeof(FFTSetup) * kMaxFFTPow2Size); 126 fftSetups = (FFTSetup*)malloc(sizeof(FFTSetup) * kMaxFFTPow2Size);
127 memset(fftSetups, 0, sizeof(FFTSetup) * kMaxFFTPow2Size); 127 memset(fftSetups, 0, sizeof(FFTSetup) * kMaxFFTPow2Size);
128 } 128 }
129 129
130 int pow2size = static_cast<int>(log2(fftSize)); 130 int pow2size = static_cast<int>(log2(fftSize));
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161 float* FFTFrame::imagData() const 161 float* FFTFrame::imagData() const
162 { 162 {
163 return m_frame.imagp; 163 return m_frame.imagp;
164 } 164 }
165 165
166 } // namespace blink 166 } // namespace blink
167 167
168 #endif // #if OS(MACOSX) 168 #endif // #if OS(MACOSX)
169 169
170 #endif // ENABLE(WEB_AUDIO) 170 #endif // ENABLE(WEB_AUDIO)
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