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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // MSVC++ requires this to be set before any other includes to get M_PI. | 5 // MSVC++ requires this to be set before any other includes to get M_PI. |
6 #define _USE_MATH_DEFINES | 6 #define _USE_MATH_DEFINES |
7 | 7 |
8 #include <cmath> | 8 #include <cmath> |
| 9 #include <memory> |
9 | 10 |
10 #include "base/bind.h" | 11 #include "base/bind.h" |
11 #include "base/bind_helpers.h" | 12 #include "base/bind_helpers.h" |
12 #include "base/macros.h" | 13 #include "base/macros.h" |
13 #include "base/strings/string_number_conversions.h" | 14 #include "base/strings/string_number_conversions.h" |
14 #include "base/time/time.h" | 15 #include "base/time/time.h" |
15 #include "build/build_config.h" | 16 #include "build/build_config.h" |
16 #include "media/base/sinc_resampler.h" | 17 #include "media/base/sinc_resampler.h" |
17 #include "testing/gmock/include/gmock/gmock.h" | 18 #include "testing/gmock/include/gmock/gmock.h" |
18 #include "testing/gtest/include/gtest/gtest.h" | 19 #include "testing/gtest/include/gtest/gtest.h" |
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46 MockSource mock_source; | 47 MockSource mock_source; |
47 | 48 |
48 // Choose a high ratio of input to output samples which will result in quick | 49 // Choose a high ratio of input to output samples which will result in quick |
49 // exhaustion of SincResampler's internal buffers. | 50 // exhaustion of SincResampler's internal buffers. |
50 SincResampler resampler( | 51 SincResampler resampler( |
51 kSampleRateRatio, SincResampler::kDefaultRequestSize, | 52 kSampleRateRatio, SincResampler::kDefaultRequestSize, |
52 base::Bind(&MockSource::ProvideInput, base::Unretained(&mock_source))); | 53 base::Bind(&MockSource::ProvideInput, base::Unretained(&mock_source))); |
53 | 54 |
54 static const int kChunks = 2; | 55 static const int kChunks = 2; |
55 int max_chunk_size = resampler.ChunkSize() * kChunks; | 56 int max_chunk_size = resampler.ChunkSize() * kChunks; |
56 scoped_ptr<float[]> resampled_destination(new float[max_chunk_size]); | 57 std::unique_ptr<float[]> resampled_destination(new float[max_chunk_size]); |
57 | 58 |
58 // Verify requesting ChunkSize() frames causes a single callback. | 59 // Verify requesting ChunkSize() frames causes a single callback. |
59 EXPECT_CALL(mock_source, ProvideInput(_, _)) | 60 EXPECT_CALL(mock_source, ProvideInput(_, _)) |
60 .Times(1).WillOnce(ClearBuffer()); | 61 .Times(1).WillOnce(ClearBuffer()); |
61 resampler.Resample(resampler.ChunkSize(), resampled_destination.get()); | 62 resampler.Resample(resampler.ChunkSize(), resampled_destination.get()); |
62 | 63 |
63 // Verify requesting kChunks * ChunkSize() frames causes kChunks callbacks. | 64 // Verify requesting kChunks * ChunkSize() frames causes kChunks callbacks. |
64 testing::Mock::VerifyAndClear(&mock_source); | 65 testing::Mock::VerifyAndClear(&mock_source); |
65 EXPECT_CALL(mock_source, ProvideInput(_, _)) | 66 EXPECT_CALL(mock_source, ProvideInput(_, _)) |
66 .Times(kChunks).WillRepeatedly(ClearBuffer()); | 67 .Times(kChunks).WillRepeatedly(ClearBuffer()); |
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89 (2 * kSampleRateRatio)))); | 90 (2 * kSampleRateRatio)))); |
90 | 91 |
91 // Verify Flush() resets to an unprimed state. | 92 // Verify Flush() resets to an unprimed state. |
92 resampler.Flush(); | 93 resampler.Flush(); |
93 EXPECT_EQ(first_chunk_size, resampler.ChunkSize()); | 94 EXPECT_EQ(first_chunk_size, resampler.ChunkSize()); |
94 resampler.PrimeWithSilence(); | 95 resampler.PrimeWithSilence(); |
95 EXPECT_EQ(max_chunk_size, resampler.ChunkSize()); | 96 EXPECT_EQ(max_chunk_size, resampler.ChunkSize()); |
96 | 97 |
97 const int kChunks = 2; | 98 const int kChunks = 2; |
98 const int kMaxFrames = max_chunk_size * kChunks; | 99 const int kMaxFrames = max_chunk_size * kChunks; |
99 scoped_ptr<float[]> resampled_destination(new float[kMaxFrames]); | 100 std::unique_ptr<float[]> resampled_destination(new float[kMaxFrames]); |
100 | 101 |
101 // Verify requesting ChunkSize() frames causes a single callback. | 102 // Verify requesting ChunkSize() frames causes a single callback. |
102 EXPECT_CALL(mock_source, ProvideInput(_, _)) | 103 EXPECT_CALL(mock_source, ProvideInput(_, _)) |
103 .Times(1).WillOnce(ClearBuffer()); | 104 .Times(1).WillOnce(ClearBuffer()); |
104 resampler.Resample(max_chunk_size, resampled_destination.get()); | 105 resampler.Resample(max_chunk_size, resampled_destination.get()); |
105 EXPECT_EQ(max_chunk_size, resampler.ChunkSize()); | 106 EXPECT_EQ(max_chunk_size, resampler.ChunkSize()); |
106 | 107 |
107 // Verify requesting kChunks * ChunkSize() frames causes kChunks callbacks. | 108 // Verify requesting kChunks * ChunkSize() frames causes kChunks callbacks. |
108 testing::Mock::VerifyAndClear(&mock_source); | 109 testing::Mock::VerifyAndClear(&mock_source); |
109 EXPECT_CALL(mock_source, ProvideInput(_, _)) | 110 EXPECT_CALL(mock_source, ProvideInput(_, _)) |
110 .Times(kChunks).WillRepeatedly(ClearBuffer()); | 111 .Times(kChunks).WillRepeatedly(ClearBuffer()); |
111 resampler.Resample(kMaxFrames, resampled_destination.get()); | 112 resampler.Resample(kMaxFrames, resampled_destination.get()); |
112 EXPECT_EQ(max_chunk_size, resampler.ChunkSize()); | 113 EXPECT_EQ(max_chunk_size, resampler.ChunkSize()); |
113 } | 114 } |
114 | 115 |
115 // Test flush resets the internal state properly. | 116 // Test flush resets the internal state properly. |
116 TEST(SincResamplerTest, Flush) { | 117 TEST(SincResamplerTest, Flush) { |
117 MockSource mock_source; | 118 MockSource mock_source; |
118 SincResampler resampler( | 119 SincResampler resampler( |
119 kSampleRateRatio, SincResampler::kDefaultRequestSize, | 120 kSampleRateRatio, SincResampler::kDefaultRequestSize, |
120 base::Bind(&MockSource::ProvideInput, base::Unretained(&mock_source))); | 121 base::Bind(&MockSource::ProvideInput, base::Unretained(&mock_source))); |
121 scoped_ptr<float[]> resampled_destination(new float[resampler.ChunkSize()]); | 122 std::unique_ptr<float[]> resampled_destination( |
| 123 new float[resampler.ChunkSize()]); |
122 | 124 |
123 // Fill the resampler with junk data. | 125 // Fill the resampler with junk data. |
124 EXPECT_CALL(mock_source, ProvideInput(_, _)) | 126 EXPECT_CALL(mock_source, ProvideInput(_, _)) |
125 .Times(1).WillOnce(FillBuffer()); | 127 .Times(1).WillOnce(FillBuffer()); |
126 resampler.Resample(resampler.ChunkSize() / 2, resampled_destination.get()); | 128 resampler.Resample(resampler.ChunkSize() / 2, resampled_destination.get()); |
127 ASSERT_NE(resampled_destination[0], 0); | 129 ASSERT_NE(resampled_destination[0], 0); |
128 | 130 |
129 // Flush and request more data, which should all be zeros now. | 131 // Flush and request more data, which should all be zeros now. |
130 resampler.Flush(); | 132 resampler.Flush(); |
131 testing::Mock::VerifyAndClear(&mock_source); | 133 testing::Mock::VerifyAndClear(&mock_source); |
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283 input_rate_, input_samples, input_nyquist_freq); | 285 input_rate_, input_samples, input_nyquist_freq); |
284 | 286 |
285 const double io_ratio = input_rate_ / static_cast<double>(output_rate_); | 287 const double io_ratio = input_rate_ / static_cast<double>(output_rate_); |
286 SincResampler resampler( | 288 SincResampler resampler( |
287 io_ratio, SincResampler::kDefaultRequestSize, | 289 io_ratio, SincResampler::kDefaultRequestSize, |
288 base::Bind(&SinusoidalLinearChirpSource::ProvideInput, | 290 base::Bind(&SinusoidalLinearChirpSource::ProvideInput, |
289 base::Unretained(&resampler_source))); | 291 base::Unretained(&resampler_source))); |
290 | 292 |
291 // Force an update to the sample rate ratio to ensure dyanmic sample rate | 293 // Force an update to the sample rate ratio to ensure dyanmic sample rate |
292 // changes are working correctly. | 294 // changes are working correctly. |
293 scoped_ptr<float[]> kernel(new float[SincResampler::kKernelStorageSize]); | 295 std::unique_ptr<float[]> kernel(new float[SincResampler::kKernelStorageSize]); |
294 memcpy(kernel.get(), resampler.get_kernel_for_testing(), | 296 memcpy(kernel.get(), resampler.get_kernel_for_testing(), |
295 SincResampler::kKernelStorageSize); | 297 SincResampler::kKernelStorageSize); |
296 resampler.SetRatio(M_PI); | 298 resampler.SetRatio(M_PI); |
297 ASSERT_NE(0, memcmp(kernel.get(), resampler.get_kernel_for_testing(), | 299 ASSERT_NE(0, memcmp(kernel.get(), resampler.get_kernel_for_testing(), |
298 SincResampler::kKernelStorageSize)); | 300 SincResampler::kKernelStorageSize)); |
299 resampler.SetRatio(io_ratio); | 301 resampler.SetRatio(io_ratio); |
300 ASSERT_EQ(0, memcmp(kernel.get(), resampler.get_kernel_for_testing(), | 302 ASSERT_EQ(0, memcmp(kernel.get(), resampler.get_kernel_for_testing(), |
301 SincResampler::kKernelStorageSize)); | 303 SincResampler::kKernelStorageSize)); |
302 | 304 |
303 // TODO(dalecurtis): If we switch to AVX/SSE optimization, we'll need to | 305 // TODO(dalecurtis): If we switch to AVX/SSE optimization, we'll need to |
304 // allocate these on 32-byte boundaries and ensure they're sized % 32 bytes. | 306 // allocate these on 32-byte boundaries and ensure they're sized % 32 bytes. |
305 scoped_ptr<float[]> resampled_destination(new float[output_samples]); | 307 std::unique_ptr<float[]> resampled_destination(new float[output_samples]); |
306 scoped_ptr<float[]> pure_destination(new float[output_samples]); | 308 std::unique_ptr<float[]> pure_destination(new float[output_samples]); |
307 | 309 |
308 // Generate resampled signal. | 310 // Generate resampled signal. |
309 resampler.Resample(output_samples, resampled_destination.get()); | 311 resampler.Resample(output_samples, resampled_destination.get()); |
310 | 312 |
311 // Generate pure signal. | 313 // Generate pure signal. |
312 SinusoidalLinearChirpSource pure_source( | 314 SinusoidalLinearChirpSource pure_source( |
313 output_rate_, output_samples, input_nyquist_freq); | 315 output_rate_, output_samples, input_nyquist_freq); |
314 pure_source.ProvideInput(output_samples, pure_destination.get()); | 316 pure_source.ProvideInput(output_samples, pure_destination.get()); |
315 | 317 |
316 // Range of the Nyquist frequency (0.5 * min(input rate, output_rate)) which | 318 // Range of the Nyquist frequency (0.5 * min(input rate, output_rate)) which |
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401 std::tr1::make_tuple(11025, 192000, kResamplingRMSError, -62.61), | 403 std::tr1::make_tuple(11025, 192000, kResamplingRMSError, -62.61), |
402 std::tr1::make_tuple(16000, 192000, kResamplingRMSError, -63.14), | 404 std::tr1::make_tuple(16000, 192000, kResamplingRMSError, -63.14), |
403 std::tr1::make_tuple(22050, 192000, kResamplingRMSError, -62.42), | 405 std::tr1::make_tuple(22050, 192000, kResamplingRMSError, -62.42), |
404 std::tr1::make_tuple(32000, 192000, kResamplingRMSError, -63.38), | 406 std::tr1::make_tuple(32000, 192000, kResamplingRMSError, -63.38), |
405 std::tr1::make_tuple(44100, 192000, kResamplingRMSError, -62.63), | 407 std::tr1::make_tuple(44100, 192000, kResamplingRMSError, -62.63), |
406 std::tr1::make_tuple(48000, 192000, kResamplingRMSError, -73.44), | 408 std::tr1::make_tuple(48000, 192000, kResamplingRMSError, -73.44), |
407 std::tr1::make_tuple(96000, 192000, kResamplingRMSError, -73.52), | 409 std::tr1::make_tuple(96000, 192000, kResamplingRMSError, -73.52), |
408 std::tr1::make_tuple(192000, 192000, kResamplingRMSError, -73.52))); | 410 std::tr1::make_tuple(192000, 192000, kResamplingRMSError, -73.52))); |
409 | 411 |
410 } // namespace media | 412 } // namespace media |
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