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1 /* | 1 /* |
2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "webrtc/modules/audio_processing/aec3/matched_filter.h" | 11 #include "webrtc/modules/audio_processing/aec3/matched_filter.h" |
12 | 12 |
| 13 #include "webrtc/typedefs.h" |
| 14 #if defined(WEBRTC_ARCH_X86_FAMILY) |
| 15 #include <emmintrin.h> |
| 16 #endif |
13 #include <algorithm> | 17 #include <algorithm> |
14 #include <sstream> | 18 #include <sstream> |
15 #include <string> | 19 #include <string> |
16 | 20 |
17 #include "webrtc/modules/audio_processing/aec3/aec3_constants.h" | 21 #include "webrtc/base/random.h" |
| 22 #include "webrtc/modules/audio_processing/aec3/aec3_common.h" |
18 #include "webrtc/modules/audio_processing/logging/apm_data_dumper.h" | 23 #include "webrtc/modules/audio_processing/logging/apm_data_dumper.h" |
19 #include "webrtc/modules/audio_processing/test/echo_canceller_test_tools.h" | 24 #include "webrtc/modules/audio_processing/test/echo_canceller_test_tools.h" |
| 25 #include "webrtc/system_wrappers/include/cpu_features_wrapper.h" |
20 #include "webrtc/test/gtest.h" | 26 #include "webrtc/test/gtest.h" |
21 | 27 |
22 namespace webrtc { | 28 namespace webrtc { |
| 29 namespace aec3 { |
23 namespace { | 30 namespace { |
24 | 31 |
25 std::string ProduceDebugText(size_t delay) { | 32 std::string ProduceDebugText(size_t delay) { |
26 std::ostringstream ss; | 33 std::ostringstream ss; |
27 ss << "Delay: " << delay; | 34 ss << "Delay: " << delay; |
28 return ss.str(); | 35 return ss.str(); |
29 } | 36 } |
30 | 37 |
31 constexpr size_t kWindowSizeSubBlocks = 32; | 38 constexpr size_t kWindowSizeSubBlocks = 32; |
32 constexpr size_t kAlignmentShiftSubBlocks = kWindowSizeSubBlocks * 3 / 4; | 39 constexpr size_t kAlignmentShiftSubBlocks = kWindowSizeSubBlocks * 3 / 4; |
33 constexpr size_t kNumMatchedFilters = 4; | 40 constexpr size_t kNumMatchedFilters = 4; |
34 | 41 |
35 } // namespace | 42 } // namespace |
36 | 43 |
| 44 #if defined(WEBRTC_ARCH_X86_FAMILY) |
| 45 // Verifies that the optimized methods are bitexact to their reference |
| 46 // counterparts. |
| 47 TEST(MatchedFilter, TestOptimizations) { |
| 48 bool use_sse2 = (WebRtc_GetCPUInfo(kSSE2) != 0); |
| 49 if (use_sse2) { |
| 50 Random random_generator(42U); |
| 51 std::vector<float> x(2000); |
| 52 RandomizeSampleVector(&random_generator, x); |
| 53 std::vector<float> y(kSubBlockSize); |
| 54 std::vector<float> h_SSE2(512); |
| 55 std::vector<float> h(512); |
| 56 int x_index = 0; |
| 57 for (int k = 0; k < 1000; ++k) { |
| 58 RandomizeSampleVector(&random_generator, y); |
| 59 |
| 60 bool filters_updated = false; |
| 61 float error_sum = 0.f; |
| 62 bool filters_updated_SSE2 = false; |
| 63 float error_sum_SSE2 = 0.f; |
| 64 |
| 65 MatchedFilterCore_SSE2(x_index, h.size() * 150.f * 150.f, x, y, h_SSE2, |
| 66 &filters_updated_SSE2, &error_sum_SSE2); |
| 67 |
| 68 MatchedFilterCore(x_index, h.size() * 150.f * 150.f, x, y, h, |
| 69 &filters_updated, &error_sum); |
| 70 |
| 71 EXPECT_EQ(filters_updated, filters_updated_SSE2); |
| 72 EXPECT_NEAR(error_sum, error_sum_SSE2, error_sum / 100000.f); |
| 73 |
| 74 for (size_t j = 0; j < h.size(); ++j) { |
| 75 EXPECT_NEAR(h[j], h_SSE2[j], 0.001f); |
| 76 } |
| 77 |
| 78 x_index = (x_index + kSubBlockSize) % x.size(); |
| 79 } |
| 80 } |
| 81 } |
| 82 |
| 83 #endif |
| 84 |
37 // Verifies that the matched filter produces proper lag estimates for | 85 // Verifies that the matched filter produces proper lag estimates for |
38 // artificially | 86 // artificially |
39 // delayed signals. | 87 // delayed signals. |
40 TEST(MatchedFilter, LagEstimation) { | 88 TEST(MatchedFilter, LagEstimation) { |
41 Random random_generator(42U); | 89 Random random_generator(42U); |
42 std::array<float, kSubBlockSize> render; | 90 std::array<float, kSubBlockSize> render; |
43 std::array<float, kSubBlockSize> capture; | 91 std::array<float, kSubBlockSize> capture; |
44 render.fill(0.f); | 92 render.fill(0.f); |
45 capture.fill(0.f); | 93 capture.fill(0.f); |
46 ApmDataDumper data_dumper(0); | 94 ApmDataDumper data_dumper(0); |
47 for (size_t delay_samples : {0, 64, 150, 200, 800, 1000}) { | 95 for (size_t delay_samples : {5, 64, 150, 200, 800, 1000}) { |
48 SCOPED_TRACE(ProduceDebugText(delay_samples)); | 96 SCOPED_TRACE(ProduceDebugText(delay_samples)); |
49 DelayBuffer<float> signal_delay_buffer(delay_samples); | 97 DelayBuffer<float> signal_delay_buffer(delay_samples); |
50 MatchedFilter filter(&data_dumper, kWindowSizeSubBlocks, kNumMatchedFilters, | 98 MatchedFilter filter(&data_dumper, DetectOptimization(), |
| 99 kWindowSizeSubBlocks, kNumMatchedFilters, |
51 kAlignmentShiftSubBlocks); | 100 kAlignmentShiftSubBlocks); |
52 | 101 |
53 // Analyze the correlation between render and capture. | 102 // Analyze the correlation between render and capture. |
54 for (size_t k = 0; k < (100 + delay_samples / kSubBlockSize); ++k) { | 103 for (size_t k = 0; k < (100 + delay_samples / kSubBlockSize); ++k) { |
55 RandomizeSampleVector(&random_generator, render); | 104 RandomizeSampleVector(&random_generator, render); |
56 signal_delay_buffer.Delay(render, capture); | 105 signal_delay_buffer.Delay(render, capture); |
57 filter.Update(render, capture); | 106 filter.Update(render, capture); |
58 } | 107 } |
59 | 108 |
60 // Obtain the lag estimates. | 109 // Obtain the lag estimates. |
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100 | 149 |
101 // Verifies that the matched filter does not produce reliable and accurate | 150 // Verifies that the matched filter does not produce reliable and accurate |
102 // estimates for uncorrelated render and capture signals. | 151 // estimates for uncorrelated render and capture signals. |
103 TEST(MatchedFilter, LagNotReliableForUncorrelatedRenderAndCapture) { | 152 TEST(MatchedFilter, LagNotReliableForUncorrelatedRenderAndCapture) { |
104 Random random_generator(42U); | 153 Random random_generator(42U); |
105 std::array<float, kSubBlockSize> render; | 154 std::array<float, kSubBlockSize> render; |
106 std::array<float, kSubBlockSize> capture; | 155 std::array<float, kSubBlockSize> capture; |
107 render.fill(0.f); | 156 render.fill(0.f); |
108 capture.fill(0.f); | 157 capture.fill(0.f); |
109 ApmDataDumper data_dumper(0); | 158 ApmDataDumper data_dumper(0); |
110 MatchedFilter filter(&data_dumper, kWindowSizeSubBlocks, kNumMatchedFilters, | 159 MatchedFilter filter(&data_dumper, DetectOptimization(), kWindowSizeSubBlocks, |
111 kAlignmentShiftSubBlocks); | 160 kNumMatchedFilters, kAlignmentShiftSubBlocks); |
112 | 161 |
113 // Analyze the correlation between render and capture. | 162 // Analyze the correlation between render and capture. |
114 for (size_t k = 0; k < 100; ++k) { | 163 for (size_t k = 0; k < 100; ++k) { |
115 RandomizeSampleVector(&random_generator, render); | 164 RandomizeSampleVector(&random_generator, render); |
116 RandomizeSampleVector(&random_generator, capture); | 165 RandomizeSampleVector(&random_generator, capture); |
117 filter.Update(render, capture); | 166 filter.Update(render, capture); |
118 } | 167 } |
119 | 168 |
120 // Obtain the lag estimates. | 169 // Obtain the lag estimates. |
121 auto lag_estimates = filter.GetLagEstimates(); | 170 auto lag_estimates = filter.GetLagEstimates(); |
122 EXPECT_EQ(kNumMatchedFilters, lag_estimates.size()); | 171 EXPECT_EQ(kNumMatchedFilters, lag_estimates.size()); |
123 | 172 |
124 // Verify that no lag estimates are reliable. | 173 // Verify that no lag estimates are reliable. |
125 for (auto& le : lag_estimates) { | 174 for (auto& le : lag_estimates) { |
126 EXPECT_FALSE(le.reliable); | 175 EXPECT_FALSE(le.reliable); |
127 } | 176 } |
128 } | 177 } |
129 | 178 |
130 // Verifies that the matched filter does not produce updated lag estimates for | 179 // Verifies that the matched filter does not produce updated lag estimates for |
131 // render signals of low level. | 180 // render signals of low level. |
132 TEST(MatchedFilter, LagNotUpdatedForLowLevelRender) { | 181 TEST(MatchedFilter, LagNotUpdatedForLowLevelRender) { |
133 Random random_generator(42U); | 182 Random random_generator(42U); |
134 std::array<float, kSubBlockSize> render; | 183 std::array<float, kSubBlockSize> render; |
135 std::array<float, kSubBlockSize> capture; | 184 std::array<float, kSubBlockSize> capture; |
136 render.fill(0.f); | 185 render.fill(0.f); |
137 capture.fill(0.f); | 186 capture.fill(0.f); |
138 ApmDataDumper data_dumper(0); | 187 ApmDataDumper data_dumper(0); |
139 MatchedFilter filter(&data_dumper, kWindowSizeSubBlocks, kNumMatchedFilters, | 188 MatchedFilter filter(&data_dumper, DetectOptimization(), kWindowSizeSubBlocks, |
140 kAlignmentShiftSubBlocks); | 189 kNumMatchedFilters, kAlignmentShiftSubBlocks); |
141 | 190 |
142 // Analyze the correlation between render and capture. | 191 // Analyze the correlation between render and capture. |
143 for (size_t k = 0; k < 100; ++k) { | 192 for (size_t k = 0; k < 100; ++k) { |
144 RandomizeSampleVector(&random_generator, render); | 193 RandomizeSampleVector(&random_generator, render); |
145 for (auto& render_k : render) { | 194 for (auto& render_k : render) { |
146 render_k *= 149.f / 32767.f; | 195 render_k *= 149.f / 32767.f; |
147 } | 196 } |
148 std::copy(render.begin(), render.end(), capture.begin()); | 197 std::copy(render.begin(), render.end(), capture.begin()); |
149 filter.Update(render, capture); | 198 filter.Update(render, capture); |
150 } | 199 } |
151 | 200 |
152 // Obtain the lag estimates. | 201 // Obtain the lag estimates. |
153 auto lag_estimates = filter.GetLagEstimates(); | 202 auto lag_estimates = filter.GetLagEstimates(); |
154 EXPECT_EQ(kNumMatchedFilters, lag_estimates.size()); | 203 EXPECT_EQ(kNumMatchedFilters, lag_estimates.size()); |
155 | 204 |
156 // Verify that no lag estimates are updated and that no lag estimates are | 205 // Verify that no lag estimates are updated and that no lag estimates are |
157 // reliable. | 206 // reliable. |
158 for (auto& le : lag_estimates) { | 207 for (auto& le : lag_estimates) { |
159 EXPECT_FALSE(le.updated); | 208 EXPECT_FALSE(le.updated); |
160 EXPECT_FALSE(le.reliable); | 209 EXPECT_FALSE(le.reliable); |
161 } | 210 } |
162 } | 211 } |
163 | 212 |
164 // Verifies that the correct number of lag estimates are produced for a certain | 213 // Verifies that the correct number of lag estimates are produced for a certain |
165 // number of alignment shifts. | 214 // number of alignment shifts. |
166 TEST(MatchedFilter, NumberOfLagEstimates) { | 215 TEST(MatchedFilter, NumberOfLagEstimates) { |
167 ApmDataDumper data_dumper(0); | 216 ApmDataDumper data_dumper(0); |
168 for (size_t num_matched_filters = 0; num_matched_filters < 10; | 217 for (size_t num_matched_filters = 0; num_matched_filters < 10; |
169 ++num_matched_filters) { | 218 ++num_matched_filters) { |
170 MatchedFilter filter(&data_dumper, 32, num_matched_filters, 1); | 219 MatchedFilter filter(&data_dumper, DetectOptimization(), 32, |
| 220 num_matched_filters, 1); |
171 EXPECT_EQ(num_matched_filters, filter.GetLagEstimates().size()); | 221 EXPECT_EQ(num_matched_filters, filter.GetLagEstimates().size()); |
172 } | 222 } |
173 } | 223 } |
174 | 224 |
175 #if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID) | 225 #if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID) |
176 | 226 |
177 // Verifies the check for non-zero windows size. | 227 // Verifies the check for non-zero windows size. |
178 TEST(MatchedFilter, ZeroWindowSize) { | 228 TEST(MatchedFilter, ZeroWindowSize) { |
179 ApmDataDumper data_dumper(0); | 229 ApmDataDumper data_dumper(0); |
180 EXPECT_DEATH(MatchedFilter(&data_dumper, 0, 1, 1), ""); | 230 EXPECT_DEATH(MatchedFilter(&data_dumper, DetectOptimization(), 0, 1, 1), ""); |
181 } | 231 } |
182 | 232 |
183 // Verifies the check for non-null data dumper. | 233 // Verifies the check for non-null data dumper. |
184 TEST(MatchedFilter, NullDataDumper) { | 234 TEST(MatchedFilter, NullDataDumper) { |
185 EXPECT_DEATH(MatchedFilter(nullptr, 1, 1, 1), ""); | 235 EXPECT_DEATH(MatchedFilter(nullptr, DetectOptimization(), 1, 1, 1), ""); |
186 } | 236 } |
187 | 237 |
188 #endif | 238 #endif |
189 | 239 |
| 240 } // namespace aec3 |
190 } // namespace webrtc | 241 } // namespace webrtc |
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