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1 /* Copyright (C) 2013 Google Inc. All rights reserved. | 1 /* Copyright (C) 2013 Google Inc. All rights reserved. |
2 * | 2 * |
3 * Redistribution and use in source and binary forms, with or without | 3 * Redistribution and use in source and binary forms, with or without |
4 * modification, are permitted provided that the following conditions | 4 * modification, are permitted provided that the following conditions |
5 * are met: | 5 * are met: |
6 * | 6 * |
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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24 | 24 |
25 #include "config.h" | 25 #include "config.h" |
26 | 26 |
27 #if ENABLE(WEB_AUDIO) | 27 #if ENABLE(WEB_AUDIO) |
28 | 28 |
29 #if OS(ANDROID) && USE(WEBAUDIO_OPENMAX_DL_FFT) | 29 #if OS(ANDROID) && USE(WEBAUDIO_OPENMAX_DL_FFT) |
30 | 30 |
31 #include "platform/audio/FFTFrame.h" | 31 #include "platform/audio/FFTFrame.h" |
32 | 32 |
33 #include "platform/audio/AudioArray.h" | 33 #include "platform/audio/AudioArray.h" |
34 #include "platform/audio/VectorMath.h" | |
35 #include "wtf/MathExtras.h" | 34 #include "wtf/MathExtras.h" |
36 #include <dl/sp/api/armSP.h> | 35 #include <dl/sp/api/armSP.h> |
37 #include <dl/sp/api/omxSP.h> | 36 #include <dl/sp/api/omxSP.h> |
38 | 37 |
39 namespace WebCore { | 38 namespace WebCore { |
40 | 39 |
41 #if !ASSERT_DISABLED | 40 #if !ASSERT_DISABLED |
42 const unsigned kMaxFFTPow2Size = 15; | 41 const unsigned kMaxFFTPow2Size = 15; |
43 #endif | 42 #endif |
44 | 43 |
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96 } | 95 } |
97 | 96 |
98 FFTFrame::~FFTFrame() | 97 FFTFrame::~FFTFrame() |
99 { | 98 { |
100 if (m_forwardContext) | 99 if (m_forwardContext) |
101 free(m_forwardContext); | 100 free(m_forwardContext); |
102 if (m_inverseContext) | 101 if (m_inverseContext) |
103 free(m_inverseContext); | 102 free(m_inverseContext); |
104 } | 103 } |
105 | 104 |
106 void FFTFrame::multiply(const FFTFrame& frame) | |
107 { | |
108 FFTFrame& frame1 = *this; | |
109 FFTFrame& frame2 = const_cast<FFTFrame&>(frame); | |
110 | |
111 float* realP1 = frame1.realData(); | |
112 float* imagP1 = frame1.imagData(); | |
113 const float* realP2 = frame2.realData(); | |
114 const float* imagP2 = frame2.imagData(); | |
115 | |
116 unsigned halfSize = fftSize() / 2; | |
117 float real0 = realP1[0]; | |
118 float imag0 = imagP1[0]; | |
119 | |
120 VectorMath::zvmul(realP1, imagP1, realP2, imagP2, realP1, imagP1, halfSize); | |
121 | |
122 // Multiply the packed DC/nyquist component | |
123 realP1[0] = real0 * realP2[0]; | |
124 imagP1[0] = imag0 * imagP2[0]; | |
125 } | |
126 | |
127 void FFTFrame::doFFT(const float* data) | 105 void FFTFrame::doFFT(const float* data) |
128 { | 106 { |
129 ASSERT(m_forwardContext); | 107 ASSERT(m_forwardContext); |
130 | 108 |
131 if (m_forwardContext) { | 109 if (m_forwardContext) { |
132 AudioFloatArray complexFFT(m_FFTSize + 2); | 110 AudioFloatArray complexFFT(m_FFTSize + 2); |
133 | 111 |
134 omxSP_FFTFwd_RToCCS_F32(data, complexFFT.data(), m_forwardContext); | 112 omxSP_FFTFwd_RToCCS_F32(data, complexFFT.data(), m_forwardContext); |
135 | 113 |
136 unsigned len = m_FFTSize / 2; | 114 unsigned len = m_FFTSize / 2; |
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200 } | 178 } |
201 | 179 |
202 return 0; | 180 return 0; |
203 } | 181 } |
204 | 182 |
205 } // namespace WebCore | 183 } // namespace WebCore |
206 | 184 |
207 #endif // #if OS(ANDROID) && !USE(WEBAUDIO_OPENMAX_DL_FFT) | 185 #endif // #if OS(ANDROID) && !USE(WEBAUDIO_OPENMAX_DL_FFT) |
208 | 186 |
209 #endif // ENABLE(WEB_AUDIO) | 187 #endif // ENABLE(WEB_AUDIO) |
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