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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 #include <cmath> | 11 #include <cmath> |
12 #include <cstring> | 12 #include <cstring> |
| 13 #include <memory> |
13 | 14 |
14 #include "testing/gmock/include/gmock/gmock.h" | 15 #include "testing/gmock/include/gmock/gmock.h" |
15 #include "testing/gtest/include/gtest/gtest.h" | 16 #include "testing/gtest/include/gtest/gtest.h" |
16 #include "webrtc/base/scoped_ptr.h" | |
17 #include "webrtc/common_audio/include/audio_util.h" | 17 #include "webrtc/common_audio/include/audio_util.h" |
18 #include "webrtc/common_audio/resampler/push_sinc_resampler.h" | 18 #include "webrtc/common_audio/resampler/push_sinc_resampler.h" |
19 #include "webrtc/common_audio/resampler/sinusoidal_linear_chirp_source.h" | 19 #include "webrtc/common_audio/resampler/sinusoidal_linear_chirp_source.h" |
20 #include "webrtc/system_wrappers/include/tick_util.h" | 20 #include "webrtc/system_wrappers/include/tick_util.h" |
21 #include "webrtc/typedefs.h" | 21 #include "webrtc/typedefs.h" |
22 | 22 |
23 namespace webrtc { | 23 namespace webrtc { |
24 namespace { | 24 namespace { |
25 | 25 |
26 // Almost all conversions have an RMS error of around -14 dbFS. | 26 // Almost all conversions have an RMS error of around -14 dbFS. |
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64 }; | 64 }; |
65 | 65 |
66 void PushSincResamplerTest::ResampleBenchmarkTest(bool int_format) { | 66 void PushSincResamplerTest::ResampleBenchmarkTest(bool int_format) { |
67 const size_t input_samples = static_cast<size_t>(input_rate_ / 100); | 67 const size_t input_samples = static_cast<size_t>(input_rate_ / 100); |
68 const size_t output_samples = static_cast<size_t>(output_rate_ / 100); | 68 const size_t output_samples = static_cast<size_t>(output_rate_ / 100); |
69 const int kResampleIterations = 500000; | 69 const int kResampleIterations = 500000; |
70 | 70 |
71 // Source for data to be resampled. | 71 // Source for data to be resampled. |
72 ZeroSource resampler_source; | 72 ZeroSource resampler_source; |
73 | 73 |
74 rtc::scoped_ptr<float[]> resampled_destination(new float[output_samples]); | 74 std::unique_ptr<float[]> resampled_destination(new float[output_samples]); |
75 rtc::scoped_ptr<float[]> source(new float[input_samples]); | 75 std::unique_ptr<float[]> source(new float[input_samples]); |
76 rtc::scoped_ptr<int16_t[]> source_int(new int16_t[input_samples]); | 76 std::unique_ptr<int16_t[]> source_int(new int16_t[input_samples]); |
77 rtc::scoped_ptr<int16_t[]> destination_int(new int16_t[output_samples]); | 77 std::unique_ptr<int16_t[]> destination_int(new int16_t[output_samples]); |
78 | 78 |
79 resampler_source.Run(input_samples, source.get()); | 79 resampler_source.Run(input_samples, source.get()); |
80 for (size_t i = 0; i < input_samples; ++i) { | 80 for (size_t i = 0; i < input_samples; ++i) { |
81 source_int[i] = static_cast<int16_t>(floor(32767 * source[i] + 0.5)); | 81 source_int[i] = static_cast<int16_t>(floor(32767 * source[i] + 0.5)); |
82 } | 82 } |
83 | 83 |
84 printf("Benchmarking %d iterations of %d Hz -> %d Hz:\n", | 84 printf("Benchmarking %d iterations of %d Hz -> %d Hz:\n", |
85 kResampleIterations, input_rate_, output_rate_); | 85 kResampleIterations, input_rate_, output_rate_); |
86 const double io_ratio = input_rate_ / static_cast<double>(output_rate_); | 86 const double io_ratio = input_rate_ / static_cast<double>(output_rate_); |
87 SincResampler sinc_resampler(io_ratio, SincResampler::kDefaultRequestSize, | 87 SincResampler sinc_resampler(io_ratio, SincResampler::kDefaultRequestSize, |
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146 const double input_nyquist_freq = 0.5 * input_rate_; | 146 const double input_nyquist_freq = 0.5 * input_rate_; |
147 | 147 |
148 // Source for data to be resampled. | 148 // Source for data to be resampled. |
149 SinusoidalLinearChirpSource resampler_source( | 149 SinusoidalLinearChirpSource resampler_source( |
150 input_rate_, input_samples, input_nyquist_freq, 0); | 150 input_rate_, input_samples, input_nyquist_freq, 0); |
151 | 151 |
152 PushSincResampler resampler(input_block_size, output_block_size); | 152 PushSincResampler resampler(input_block_size, output_block_size); |
153 | 153 |
154 // TODO(dalecurtis): If we switch to AVX/SSE optimization, we'll need to | 154 // TODO(dalecurtis): If we switch to AVX/SSE optimization, we'll need to |
155 // allocate these on 32-byte boundaries and ensure they're sized % 32 bytes. | 155 // allocate these on 32-byte boundaries and ensure they're sized % 32 bytes. |
156 rtc::scoped_ptr<float[]> resampled_destination(new float[output_samples]); | 156 std::unique_ptr<float[]> resampled_destination(new float[output_samples]); |
157 rtc::scoped_ptr<float[]> pure_destination(new float[output_samples]); | 157 std::unique_ptr<float[]> pure_destination(new float[output_samples]); |
158 rtc::scoped_ptr<float[]> source(new float[input_samples]); | 158 std::unique_ptr<float[]> source(new float[input_samples]); |
159 rtc::scoped_ptr<int16_t[]> source_int(new int16_t[input_block_size]); | 159 std::unique_ptr<int16_t[]> source_int(new int16_t[input_block_size]); |
160 rtc::scoped_ptr<int16_t[]> destination_int(new int16_t[output_block_size]); | 160 std::unique_ptr<int16_t[]> destination_int(new int16_t[output_block_size]); |
161 | 161 |
162 // The sinc resampler has an implicit delay of approximately half the kernel | 162 // The sinc resampler has an implicit delay of approximately half the kernel |
163 // size at the input sample rate. By moving to a push model, this delay | 163 // size at the input sample rate. By moving to a push model, this delay |
164 // becomes explicit and is managed by zero-stuffing in PushSincResampler. We | 164 // becomes explicit and is managed by zero-stuffing in PushSincResampler. We |
165 // deal with it in the test by delaying the "pure" source to match. It must be | 165 // deal with it in the test by delaying the "pure" source to match. It must be |
166 // checked before the first call to Resample(), because ChunkSize() will | 166 // checked before the first call to Resample(), because ChunkSize() will |
167 // change afterwards. | 167 // change afterwards. |
168 const size_t output_delay_samples = output_block_size - | 168 const size_t output_delay_samples = output_block_size - |
169 resampler.get_resampler_for_testing()->ChunkSize(); | 169 resampler.get_resampler_for_testing()->ChunkSize(); |
170 | 170 |
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326 // To 32 kHz | 326 // To 32 kHz |
327 ::testing::make_tuple(8000, 32000, kResamplingRMSError, -70.30), | 327 ::testing::make_tuple(8000, 32000, kResamplingRMSError, -70.30), |
328 ::testing::make_tuple(16000, 32000, kResamplingRMSError, -75.51), | 328 ::testing::make_tuple(16000, 32000, kResamplingRMSError, -75.51), |
329 ::testing::make_tuple(32000, 32000, kResamplingRMSError, -75.51), | 329 ::testing::make_tuple(32000, 32000, kResamplingRMSError, -75.51), |
330 ::testing::make_tuple(44100, 32000, -16.44, -51.10), | 330 ::testing::make_tuple(44100, 32000, -16.44, -51.10), |
331 ::testing::make_tuple(48000, 32000, -16.90, -44.03), | 331 ::testing::make_tuple(48000, 32000, -16.90, -44.03), |
332 ::testing::make_tuple(96000, 32000, -19.61, -18.04), | 332 ::testing::make_tuple(96000, 32000, -19.61, -18.04), |
333 ::testing::make_tuple(192000, 32000, -21.02, -10.94))); | 333 ::testing::make_tuple(192000, 32000, -21.02, -10.94))); |
334 | 334 |
335 } // namespace webrtc | 335 } // namespace webrtc |
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