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| 1 /* | 1 /* |
| 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2013 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 // Modified from the Chromium original: | 11 // Modified from the Chromium original: |
| 12 // src/media/base/sinc_resampler_unittest.cc | 12 // src/media/base/sinc_resampler_unittest.cc |
| 13 | 13 |
| 14 // MSVC++ requires this to be set before any other includes to get M_PI. | 14 // MSVC++ requires this to be set before any other includes to get M_PI. |
| 15 #define _USE_MATH_DEFINES | 15 #define _USE_MATH_DEFINES |
| 16 | 16 |
| 17 #include <math.h> | 17 #include <math.h> |
| 18 | 18 |
| 19 #include <memory> |
| 20 |
| 19 #include "testing/gmock/include/gmock/gmock.h" | 21 #include "testing/gmock/include/gmock/gmock.h" |
| 20 #include "testing/gtest/include/gtest/gtest.h" | 22 #include "testing/gtest/include/gtest/gtest.h" |
| 21 #include "webrtc/base/scoped_ptr.h" | |
| 22 #include "webrtc/common_audio/resampler/sinc_resampler.h" | 23 #include "webrtc/common_audio/resampler/sinc_resampler.h" |
| 23 #include "webrtc/common_audio/resampler/sinusoidal_linear_chirp_source.h" | 24 #include "webrtc/common_audio/resampler/sinusoidal_linear_chirp_source.h" |
| 24 #include "webrtc/system_wrappers/include/cpu_features_wrapper.h" | 25 #include "webrtc/system_wrappers/include/cpu_features_wrapper.h" |
| 25 #include "webrtc/system_wrappers/include/stringize_macros.h" | 26 #include "webrtc/system_wrappers/include/stringize_macros.h" |
| 26 #include "webrtc/system_wrappers/include/tick_util.h" | 27 #include "webrtc/system_wrappers/include/tick_util.h" |
| 27 #include "webrtc/test/test_suite.h" | 28 #include "webrtc/test/test_suite.h" |
| 28 | 29 |
| 29 using testing::_; | 30 using testing::_; |
| 30 | 31 |
| 31 namespace webrtc { | 32 namespace webrtc { |
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| 55 TEST(SincResamplerTest, ChunkedResample) { | 56 TEST(SincResamplerTest, ChunkedResample) { |
| 56 MockSource mock_source; | 57 MockSource mock_source; |
| 57 | 58 |
| 58 // Choose a high ratio of input to output samples which will result in quick | 59 // Choose a high ratio of input to output samples which will result in quick |
| 59 // exhaustion of SincResampler's internal buffers. | 60 // exhaustion of SincResampler's internal buffers. |
| 60 SincResampler resampler(kSampleRateRatio, SincResampler::kDefaultRequestSize, | 61 SincResampler resampler(kSampleRateRatio, SincResampler::kDefaultRequestSize, |
| 61 &mock_source); | 62 &mock_source); |
| 62 | 63 |
| 63 static const int kChunks = 2; | 64 static const int kChunks = 2; |
| 64 size_t max_chunk_size = resampler.ChunkSize() * kChunks; | 65 size_t max_chunk_size = resampler.ChunkSize() * kChunks; |
| 65 rtc::scoped_ptr<float[]> resampled_destination(new float[max_chunk_size]); | 66 std::unique_ptr<float[]> resampled_destination(new float[max_chunk_size]); |
| 66 | 67 |
| 67 // Verify requesting ChunkSize() frames causes a single callback. | 68 // Verify requesting ChunkSize() frames causes a single callback. |
| 68 EXPECT_CALL(mock_source, Run(_, _)) | 69 EXPECT_CALL(mock_source, Run(_, _)) |
| 69 .Times(1).WillOnce(ClearBuffer()); | 70 .Times(1).WillOnce(ClearBuffer()); |
| 70 resampler.Resample(resampler.ChunkSize(), resampled_destination.get()); | 71 resampler.Resample(resampler.ChunkSize(), resampled_destination.get()); |
| 71 | 72 |
| 72 // Verify requesting kChunks * ChunkSize() frames causes kChunks callbacks. | 73 // Verify requesting kChunks * ChunkSize() frames causes kChunks callbacks. |
| 73 testing::Mock::VerifyAndClear(&mock_source); | 74 testing::Mock::VerifyAndClear(&mock_source); |
| 74 EXPECT_CALL(mock_source, Run(_, _)) | 75 EXPECT_CALL(mock_source, Run(_, _)) |
| 75 .Times(kChunks).WillRepeatedly(ClearBuffer()); | 76 .Times(kChunks).WillRepeatedly(ClearBuffer()); |
| 76 resampler.Resample(max_chunk_size, resampled_destination.get()); | 77 resampler.Resample(max_chunk_size, resampled_destination.get()); |
| 77 } | 78 } |
| 78 | 79 |
| 79 // Test flush resets the internal state properly. | 80 // Test flush resets the internal state properly. |
| 80 TEST(SincResamplerTest, Flush) { | 81 TEST(SincResamplerTest, Flush) { |
| 81 MockSource mock_source; | 82 MockSource mock_source; |
| 82 SincResampler resampler(kSampleRateRatio, SincResampler::kDefaultRequestSize, | 83 SincResampler resampler(kSampleRateRatio, SincResampler::kDefaultRequestSize, |
| 83 &mock_source); | 84 &mock_source); |
| 84 rtc::scoped_ptr<float[]> resampled_destination( | 85 std::unique_ptr<float[]> resampled_destination( |
| 85 new float[resampler.ChunkSize()]); | 86 new float[resampler.ChunkSize()]); |
| 86 | 87 |
| 87 // Fill the resampler with junk data. | 88 // Fill the resampler with junk data. |
| 88 EXPECT_CALL(mock_source, Run(_, _)) | 89 EXPECT_CALL(mock_source, Run(_, _)) |
| 89 .Times(1).WillOnce(FillBuffer()); | 90 .Times(1).WillOnce(FillBuffer()); |
| 90 resampler.Resample(resampler.ChunkSize() / 2, resampled_destination.get()); | 91 resampler.Resample(resampler.ChunkSize() / 2, resampled_destination.get()); |
| 91 ASSERT_NE(resampled_destination[0], 0); | 92 ASSERT_NE(resampled_destination[0], 0); |
| 92 | 93 |
| 93 // Flush and request more data, which should all be zeros now. | 94 // Flush and request more data, which should all be zeros now. |
| 94 resampler.Flush(); | 95 resampler.Flush(); |
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| 262 // Source for data to be resampled. | 263 // Source for data to be resampled. |
| 263 SinusoidalLinearChirpSource resampler_source( | 264 SinusoidalLinearChirpSource resampler_source( |
| 264 input_rate_, input_samples, input_nyquist_freq, 0); | 265 input_rate_, input_samples, input_nyquist_freq, 0); |
| 265 | 266 |
| 266 const double io_ratio = input_rate_ / static_cast<double>(output_rate_); | 267 const double io_ratio = input_rate_ / static_cast<double>(output_rate_); |
| 267 SincResampler resampler(io_ratio, SincResampler::kDefaultRequestSize, | 268 SincResampler resampler(io_ratio, SincResampler::kDefaultRequestSize, |
| 268 &resampler_source); | 269 &resampler_source); |
| 269 | 270 |
| 270 // Force an update to the sample rate ratio to ensure dyanmic sample rate | 271 // Force an update to the sample rate ratio to ensure dyanmic sample rate |
| 271 // changes are working correctly. | 272 // changes are working correctly. |
| 272 rtc::scoped_ptr<float[]> kernel(new float[SincResampler::kKernelStorageSize]); | 273 std::unique_ptr<float[]> kernel(new float[SincResampler::kKernelStorageSize]); |
| 273 memcpy(kernel.get(), resampler.get_kernel_for_testing(), | 274 memcpy(kernel.get(), resampler.get_kernel_for_testing(), |
| 274 SincResampler::kKernelStorageSize); | 275 SincResampler::kKernelStorageSize); |
| 275 resampler.SetRatio(M_PI); | 276 resampler.SetRatio(M_PI); |
| 276 ASSERT_NE(0, memcmp(kernel.get(), resampler.get_kernel_for_testing(), | 277 ASSERT_NE(0, memcmp(kernel.get(), resampler.get_kernel_for_testing(), |
| 277 SincResampler::kKernelStorageSize)); | 278 SincResampler::kKernelStorageSize)); |
| 278 resampler.SetRatio(io_ratio); | 279 resampler.SetRatio(io_ratio); |
| 279 ASSERT_EQ(0, memcmp(kernel.get(), resampler.get_kernel_for_testing(), | 280 ASSERT_EQ(0, memcmp(kernel.get(), resampler.get_kernel_for_testing(), |
| 280 SincResampler::kKernelStorageSize)); | 281 SincResampler::kKernelStorageSize)); |
| 281 | 282 |
| 282 // TODO(dalecurtis): If we switch to AVX/SSE optimization, we'll need to | 283 // TODO(dalecurtis): If we switch to AVX/SSE optimization, we'll need to |
| 283 // allocate these on 32-byte boundaries and ensure they're sized % 32 bytes. | 284 // allocate these on 32-byte boundaries and ensure they're sized % 32 bytes. |
| 284 rtc::scoped_ptr<float[]> resampled_destination(new float[output_samples]); | 285 std::unique_ptr<float[]> resampled_destination(new float[output_samples]); |
| 285 rtc::scoped_ptr<float[]> pure_destination(new float[output_samples]); | 286 std::unique_ptr<float[]> pure_destination(new float[output_samples]); |
| 286 | 287 |
| 287 // Generate resampled signal. | 288 // Generate resampled signal. |
| 288 resampler.Resample(output_samples, resampled_destination.get()); | 289 resampler.Resample(output_samples, resampled_destination.get()); |
| 289 | 290 |
| 290 // Generate pure signal. | 291 // Generate pure signal. |
| 291 SinusoidalLinearChirpSource pure_source( | 292 SinusoidalLinearChirpSource pure_source( |
| 292 output_rate_, output_samples, input_nyquist_freq, 0); | 293 output_rate_, output_samples, input_nyquist_freq, 0); |
| 293 pure_source.Run(output_samples, pure_destination.get()); | 294 pure_source.Run(output_samples, pure_destination.get()); |
| 294 | 295 |
| 295 // Range of the Nyquist frequency (0.5 * min(input rate, output_rate)) which | 296 // Range of the Nyquist frequency (0.5 * min(input rate, output_rate)) which |
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| 380 std::tr1::make_tuple(11025, 192000, kResamplingRMSError, -62.61), | 381 std::tr1::make_tuple(11025, 192000, kResamplingRMSError, -62.61), |
| 381 std::tr1::make_tuple(16000, 192000, kResamplingRMSError, -63.14), | 382 std::tr1::make_tuple(16000, 192000, kResamplingRMSError, -63.14), |
| 382 std::tr1::make_tuple(22050, 192000, kResamplingRMSError, -62.42), | 383 std::tr1::make_tuple(22050, 192000, kResamplingRMSError, -62.42), |
| 383 std::tr1::make_tuple(32000, 192000, kResamplingRMSError, -63.38), | 384 std::tr1::make_tuple(32000, 192000, kResamplingRMSError, -63.38), |
| 384 std::tr1::make_tuple(44100, 192000, kResamplingRMSError, -62.63), | 385 std::tr1::make_tuple(44100, 192000, kResamplingRMSError, -62.63), |
| 385 std::tr1::make_tuple(48000, 192000, kResamplingRMSError, -73.44), | 386 std::tr1::make_tuple(48000, 192000, kResamplingRMSError, -73.44), |
| 386 std::tr1::make_tuple(96000, 192000, kResamplingRMSError, -73.52), | 387 std::tr1::make_tuple(96000, 192000, kResamplingRMSError, -73.52), |
| 387 std::tr1::make_tuple(192000, 192000, kResamplingRMSError, -73.52))); | 388 std::tr1::make_tuple(192000, 192000, kResamplingRMSError, -73.52))); |
| 388 | 389 |
| 389 } // namespace webrtc | 390 } // namespace webrtc |
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