content/media/webaudio/blink/DirectConvolver.cpp@6474c204b198
content/media/webaudio/blink/DirectConvolver.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /*
2 * Copyright (C) 2012 Intel Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
29 #include "DirectConvolver.h"
30 #include "mozilla/PodOperations.h"
32 using namespace mozilla;
34 namespace WebCore {
36 DirectConvolver::DirectConvolver(size_t inputBlockSize)
37 : m_inputBlockSize(inputBlockSize)
38 {
39 m_buffer.SetLength(inputBlockSize * 2);
40 PodZero(m_buffer.Elements(), inputBlockSize * 2);
41 }
43 void DirectConvolver::process(const nsTArray<float>* convolutionKernel, const float* sourceP, float* destP, size_t framesToProcess)
44 {
45 MOZ_ASSERT(framesToProcess == m_inputBlockSize);
46 if (framesToProcess != m_inputBlockSize)
47 return;
49 // Only support kernelSize <= m_inputBlockSize
50 size_t kernelSize = convolutionKernel->Length();
51 MOZ_ASSERT(kernelSize <= m_inputBlockSize);
52 if (kernelSize > m_inputBlockSize)
53 return;
55 const float* kernelP = convolutionKernel->Elements();
57 // Sanity check
58 bool isCopyGood = kernelP && sourceP && destP && m_buffer.Elements();
59 MOZ_ASSERT(isCopyGood);
60 if (!isCopyGood)
61 return;
63 float* inputP = m_buffer.Elements() + m_inputBlockSize;
65 // Copy samples to 2nd half of input buffer.
66 memcpy(inputP, sourceP, sizeof(float) * framesToProcess);
68 // FIXME: The macro can be further optimized to avoid pipeline stalls. One possibility is to maintain 4 separate sums and change the macro to CONVOLVE_FOUR_SAMPLES.
69 #define CONVOLVE_ONE_SAMPLE \
70 sum += inputP[i - j] * kernelP[j]; \
71 j++;
73 size_t i = 0;
74 while (i < framesToProcess) {
75 size_t j = 0;
76 float sum = 0;
78 // FIXME: SSE optimization may be applied here.
79 if (kernelSize == 32) {
80 CONVOLVE_ONE_SAMPLE // 1
81 CONVOLVE_ONE_SAMPLE // 2
82 CONVOLVE_ONE_SAMPLE // 3
83 CONVOLVE_ONE_SAMPLE // 4
84 CONVOLVE_ONE_SAMPLE // 5
85 CONVOLVE_ONE_SAMPLE // 6
86 CONVOLVE_ONE_SAMPLE // 7
87 CONVOLVE_ONE_SAMPLE // 8
88 CONVOLVE_ONE_SAMPLE // 9
89 CONVOLVE_ONE_SAMPLE // 10
91 CONVOLVE_ONE_SAMPLE // 11
92 CONVOLVE_ONE_SAMPLE // 12
93 CONVOLVE_ONE_SAMPLE // 13
94 CONVOLVE_ONE_SAMPLE // 14
95 CONVOLVE_ONE_SAMPLE // 15
96 CONVOLVE_ONE_SAMPLE // 16
97 CONVOLVE_ONE_SAMPLE // 17
98 CONVOLVE_ONE_SAMPLE // 18
99 CONVOLVE_ONE_SAMPLE // 19
100 CONVOLVE_ONE_SAMPLE // 20
102 CONVOLVE_ONE_SAMPLE // 21
103 CONVOLVE_ONE_SAMPLE // 22
104 CONVOLVE_ONE_SAMPLE // 23
105 CONVOLVE_ONE_SAMPLE // 24
106 CONVOLVE_ONE_SAMPLE // 25
107 CONVOLVE_ONE_SAMPLE // 26
108 CONVOLVE_ONE_SAMPLE // 27
109 CONVOLVE_ONE_SAMPLE // 28
110 CONVOLVE_ONE_SAMPLE // 29
111 CONVOLVE_ONE_SAMPLE // 30
113 CONVOLVE_ONE_SAMPLE // 31
114 CONVOLVE_ONE_SAMPLE // 32
116 } else if (kernelSize == 64) {
117 CONVOLVE_ONE_SAMPLE // 1
118 CONVOLVE_ONE_SAMPLE // 2
119 CONVOLVE_ONE_SAMPLE // 3
120 CONVOLVE_ONE_SAMPLE // 4
121 CONVOLVE_ONE_SAMPLE // 5
122 CONVOLVE_ONE_SAMPLE // 6
123 CONVOLVE_ONE_SAMPLE // 7
124 CONVOLVE_ONE_SAMPLE // 8
125 CONVOLVE_ONE_SAMPLE // 9
126 CONVOLVE_ONE_SAMPLE // 10
128 CONVOLVE_ONE_SAMPLE // 11
129 CONVOLVE_ONE_SAMPLE // 12
130 CONVOLVE_ONE_SAMPLE // 13
131 CONVOLVE_ONE_SAMPLE // 14
132 CONVOLVE_ONE_SAMPLE // 15
133 CONVOLVE_ONE_SAMPLE // 16
134 CONVOLVE_ONE_SAMPLE // 17
135 CONVOLVE_ONE_SAMPLE // 18
136 CONVOLVE_ONE_SAMPLE // 19
137 CONVOLVE_ONE_SAMPLE // 20
139 CONVOLVE_ONE_SAMPLE // 21
140 CONVOLVE_ONE_SAMPLE // 22
141 CONVOLVE_ONE_SAMPLE // 23
142 CONVOLVE_ONE_SAMPLE // 24
143 CONVOLVE_ONE_SAMPLE // 25
144 CONVOLVE_ONE_SAMPLE // 26
145 CONVOLVE_ONE_SAMPLE // 27
146 CONVOLVE_ONE_SAMPLE // 28
147 CONVOLVE_ONE_SAMPLE // 29
148 CONVOLVE_ONE_SAMPLE // 30
150 CONVOLVE_ONE_SAMPLE // 31
151 CONVOLVE_ONE_SAMPLE // 32
152 CONVOLVE_ONE_SAMPLE // 33
153 CONVOLVE_ONE_SAMPLE // 34
154 CONVOLVE_ONE_SAMPLE // 35
155 CONVOLVE_ONE_SAMPLE // 36
156 CONVOLVE_ONE_SAMPLE // 37
157 CONVOLVE_ONE_SAMPLE // 38
158 CONVOLVE_ONE_SAMPLE // 39
159 CONVOLVE_ONE_SAMPLE // 40
161 CONVOLVE_ONE_SAMPLE // 41
162 CONVOLVE_ONE_SAMPLE // 42
163 CONVOLVE_ONE_SAMPLE // 43
164 CONVOLVE_ONE_SAMPLE // 44
165 CONVOLVE_ONE_SAMPLE // 45
166 CONVOLVE_ONE_SAMPLE // 46
167 CONVOLVE_ONE_SAMPLE // 47
168 CONVOLVE_ONE_SAMPLE // 48
169 CONVOLVE_ONE_SAMPLE // 49
170 CONVOLVE_ONE_SAMPLE // 50
172 CONVOLVE_ONE_SAMPLE // 51
173 CONVOLVE_ONE_SAMPLE // 52
174 CONVOLVE_ONE_SAMPLE // 53
175 CONVOLVE_ONE_SAMPLE // 54
176 CONVOLVE_ONE_SAMPLE // 55
177 CONVOLVE_ONE_SAMPLE // 56
178 CONVOLVE_ONE_SAMPLE // 57
179 CONVOLVE_ONE_SAMPLE // 58
180 CONVOLVE_ONE_SAMPLE // 59
181 CONVOLVE_ONE_SAMPLE // 60
183 CONVOLVE_ONE_SAMPLE // 61
184 CONVOLVE_ONE_SAMPLE // 62
185 CONVOLVE_ONE_SAMPLE // 63
186 CONVOLVE_ONE_SAMPLE // 64
188 } else if (kernelSize == 128) {
189 CONVOLVE_ONE_SAMPLE // 1
190 CONVOLVE_ONE_SAMPLE // 2
191 CONVOLVE_ONE_SAMPLE // 3
192 CONVOLVE_ONE_SAMPLE // 4
193 CONVOLVE_ONE_SAMPLE // 5
194 CONVOLVE_ONE_SAMPLE // 6
195 CONVOLVE_ONE_SAMPLE // 7
196 CONVOLVE_ONE_SAMPLE // 8
197 CONVOLVE_ONE_SAMPLE // 9
198 CONVOLVE_ONE_SAMPLE // 10
200 CONVOLVE_ONE_SAMPLE // 11
201 CONVOLVE_ONE_SAMPLE // 12
202 CONVOLVE_ONE_SAMPLE // 13
203 CONVOLVE_ONE_SAMPLE // 14
204 CONVOLVE_ONE_SAMPLE // 15
205 CONVOLVE_ONE_SAMPLE // 16
206 CONVOLVE_ONE_SAMPLE // 17
207 CONVOLVE_ONE_SAMPLE // 18
208 CONVOLVE_ONE_SAMPLE // 19
209 CONVOLVE_ONE_SAMPLE // 20
211 CONVOLVE_ONE_SAMPLE // 21
212 CONVOLVE_ONE_SAMPLE // 22
213 CONVOLVE_ONE_SAMPLE // 23
214 CONVOLVE_ONE_SAMPLE // 24
215 CONVOLVE_ONE_SAMPLE // 25
216 CONVOLVE_ONE_SAMPLE // 26
217 CONVOLVE_ONE_SAMPLE // 27
218 CONVOLVE_ONE_SAMPLE // 28
219 CONVOLVE_ONE_SAMPLE // 29
220 CONVOLVE_ONE_SAMPLE // 30
222 CONVOLVE_ONE_SAMPLE // 31
223 CONVOLVE_ONE_SAMPLE // 32
224 CONVOLVE_ONE_SAMPLE // 33
225 CONVOLVE_ONE_SAMPLE // 34
226 CONVOLVE_ONE_SAMPLE // 35
227 CONVOLVE_ONE_SAMPLE // 36
228 CONVOLVE_ONE_SAMPLE // 37
229 CONVOLVE_ONE_SAMPLE // 38
230 CONVOLVE_ONE_SAMPLE // 39
231 CONVOLVE_ONE_SAMPLE // 40
233 CONVOLVE_ONE_SAMPLE // 41
234 CONVOLVE_ONE_SAMPLE // 42
235 CONVOLVE_ONE_SAMPLE // 43
236 CONVOLVE_ONE_SAMPLE // 44
237 CONVOLVE_ONE_SAMPLE // 45
238 CONVOLVE_ONE_SAMPLE // 46
239 CONVOLVE_ONE_SAMPLE // 47
240 CONVOLVE_ONE_SAMPLE // 48
241 CONVOLVE_ONE_SAMPLE // 49
242 CONVOLVE_ONE_SAMPLE // 50
244 CONVOLVE_ONE_SAMPLE // 51
245 CONVOLVE_ONE_SAMPLE // 52
246 CONVOLVE_ONE_SAMPLE // 53
247 CONVOLVE_ONE_SAMPLE // 54
248 CONVOLVE_ONE_SAMPLE // 55
249 CONVOLVE_ONE_SAMPLE // 56
250 CONVOLVE_ONE_SAMPLE // 57
251 CONVOLVE_ONE_SAMPLE // 58
252 CONVOLVE_ONE_SAMPLE // 59
253 CONVOLVE_ONE_SAMPLE // 60
255 CONVOLVE_ONE_SAMPLE // 61
256 CONVOLVE_ONE_SAMPLE // 62
257 CONVOLVE_ONE_SAMPLE // 63
258 CONVOLVE_ONE_SAMPLE // 64
259 CONVOLVE_ONE_SAMPLE // 65
260 CONVOLVE_ONE_SAMPLE // 66
261 CONVOLVE_ONE_SAMPLE // 67
262 CONVOLVE_ONE_SAMPLE // 68
263 CONVOLVE_ONE_SAMPLE // 69
264 CONVOLVE_ONE_SAMPLE // 70
266 CONVOLVE_ONE_SAMPLE // 71
267 CONVOLVE_ONE_SAMPLE // 72
268 CONVOLVE_ONE_SAMPLE // 73
269 CONVOLVE_ONE_SAMPLE // 74
270 CONVOLVE_ONE_SAMPLE // 75
271 CONVOLVE_ONE_SAMPLE // 76
272 CONVOLVE_ONE_SAMPLE // 77
273 CONVOLVE_ONE_SAMPLE // 78
274 CONVOLVE_ONE_SAMPLE // 79
275 CONVOLVE_ONE_SAMPLE // 80
277 CONVOLVE_ONE_SAMPLE // 81
278 CONVOLVE_ONE_SAMPLE // 82
279 CONVOLVE_ONE_SAMPLE // 83
280 CONVOLVE_ONE_SAMPLE // 84
281 CONVOLVE_ONE_SAMPLE // 85
282 CONVOLVE_ONE_SAMPLE // 86
283 CONVOLVE_ONE_SAMPLE // 87
284 CONVOLVE_ONE_SAMPLE // 88
285 CONVOLVE_ONE_SAMPLE // 89
286 CONVOLVE_ONE_SAMPLE // 90
288 CONVOLVE_ONE_SAMPLE // 91
289 CONVOLVE_ONE_SAMPLE // 92
290 CONVOLVE_ONE_SAMPLE // 93
291 CONVOLVE_ONE_SAMPLE // 94
292 CONVOLVE_ONE_SAMPLE // 95
293 CONVOLVE_ONE_SAMPLE // 96
294 CONVOLVE_ONE_SAMPLE // 97
295 CONVOLVE_ONE_SAMPLE // 98
296 CONVOLVE_ONE_SAMPLE // 99
297 CONVOLVE_ONE_SAMPLE // 100
299 CONVOLVE_ONE_SAMPLE // 101
300 CONVOLVE_ONE_SAMPLE // 102
301 CONVOLVE_ONE_SAMPLE // 103
302 CONVOLVE_ONE_SAMPLE // 104
303 CONVOLVE_ONE_SAMPLE // 105
304 CONVOLVE_ONE_SAMPLE // 106
305 CONVOLVE_ONE_SAMPLE // 107
306 CONVOLVE_ONE_SAMPLE // 108
307 CONVOLVE_ONE_SAMPLE // 109
308 CONVOLVE_ONE_SAMPLE // 110
310 CONVOLVE_ONE_SAMPLE // 111
311 CONVOLVE_ONE_SAMPLE // 112
312 CONVOLVE_ONE_SAMPLE // 113
313 CONVOLVE_ONE_SAMPLE // 114
314 CONVOLVE_ONE_SAMPLE // 115
315 CONVOLVE_ONE_SAMPLE // 116
316 CONVOLVE_ONE_SAMPLE // 117
317 CONVOLVE_ONE_SAMPLE // 118
318 CONVOLVE_ONE_SAMPLE // 119
319 CONVOLVE_ONE_SAMPLE // 120
321 CONVOLVE_ONE_SAMPLE // 121
322 CONVOLVE_ONE_SAMPLE // 122
323 CONVOLVE_ONE_SAMPLE // 123
324 CONVOLVE_ONE_SAMPLE // 124
325 CONVOLVE_ONE_SAMPLE // 125
326 CONVOLVE_ONE_SAMPLE // 126
327 CONVOLVE_ONE_SAMPLE // 127
328 CONVOLVE_ONE_SAMPLE // 128
329 } else {
330 while (j < kernelSize) {
331 // Non-optimized using actual while loop.
332 CONVOLVE_ONE_SAMPLE
333 }
334 }
335 destP[i++] = sum;
336 }
338 // Copy 2nd half of input buffer to 1st half.
339 memcpy(m_buffer.Elements(), inputP, sizeof(float) * framesToProcess);
340 }
342 void DirectConvolver::reset()
343 {
344 PodZero(m_buffer.Elements(), m_buffer.Length());
345 }
347 } // namespace WebCore
