andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| 3 | * |
| 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 |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 11 | #include "common_audio/include/audio_util.h" |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 12 | |
| 13 | #include "rtc_base/arraysize.h" |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 14 | #include "test/gmock.h" |
| 15 | #include "test/gtest.h" |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 16 | |
| 17 | namespace webrtc { |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 18 | namespace { |
| 19 | |
| 20 | using ::testing::ElementsAreArray; |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 21 | |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 22 | void ExpectArraysEq(const int16_t* ref, const int16_t* test, size_t length) { |
| 23 | for (size_t i = 0; i < length; ++i) { |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 24 | EXPECT_EQ(ref[i], test[i]); |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 25 | } |
| 26 | } |
| 27 | |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 28 | void ExpectArraysEq(const float* ref, const float* test, size_t length) { |
| 29 | for (size_t i = 0; i < length; ++i) { |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 30 | EXPECT_NEAR(ref[i], test[i], 0.01f); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 31 | } |
andrew@webrtc.org | b159c2e | 2013-09-06 21:15:55 +0000 | [diff] [blame] | 32 | } |
| 33 | |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 34 | TEST(AudioUtilTest, S16ToFloat) { |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 35 | static constexpr int16_t kInput[] = {0, 1, -1, 16384, -16384, 32767, -32768}; |
| 36 | static constexpr float kReference[] = { |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 37 | 0.f, 1.f / 32767.f, -1.f / 32768.f, 16384.f / 32767.f, -0.5f, 1.f, -1.f}; |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 38 | static constexpr size_t kSize = arraysize(kInput); |
| 39 | static_assert(arraysize(kReference) == kSize, ""); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 40 | float output[kSize]; |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 41 | S16ToFloat(kInput, kSize, output); |
| 42 | ExpectArraysEq(kReference, output, kSize); |
| 43 | } |
| 44 | |
| 45 | TEST(AudioUtilTest, FloatS16ToS16) { |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 46 | static constexpr float kInput[] = {0.f, 0.4f, 0.5f, -0.4f, |
| 47 | -0.5f, 32768.f, -32769.f}; |
| 48 | static constexpr int16_t kReference[] = {0, 0, 1, 0, -1, 32767, -32768}; |
| 49 | static constexpr size_t kSize = arraysize(kInput); |
| 50 | static_assert(arraysize(kReference) == kSize, ""); |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 51 | int16_t output[kSize]; |
| 52 | FloatS16ToS16(kInput, kSize, output); |
| 53 | ExpectArraysEq(kReference, output, kSize); |
| 54 | } |
| 55 | |
| 56 | TEST(AudioUtilTest, FloatToFloatS16) { |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 57 | static constexpr float kInput[] = {0.f, |
Per Åhgren | 62c174c | 2019-08-16 13:43:00 +0200 | [diff] [blame] | 58 | 0.4f / 32768.f, |
| 59 | 0.6f / 32768.f, |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 60 | -0.4f / 32768.f, |
| 61 | -0.6f / 32768.f, |
| 62 | 1.f, |
| 63 | -1.f, |
Per Åhgren | 62c174c | 2019-08-16 13:43:00 +0200 | [diff] [blame] | 64 | 1.f, |
| 65 | -1.f}; |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 66 | static constexpr float kReference[] = { |
Per Åhgren | 62c174c | 2019-08-16 13:43:00 +0200 | [diff] [blame] | 67 | 0.f, 0.4f, 0.6f, -0.4f, -0.6f, 32768.f, -32768.f, 32768.f, -32768.f}; |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 68 | static constexpr size_t kSize = arraysize(kInput); |
| 69 | static_assert(arraysize(kReference) == kSize, ""); |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 70 | float output[kSize]; |
| 71 | FloatToFloatS16(kInput, kSize, output); |
| 72 | ExpectArraysEq(kReference, output, kSize); |
| 73 | } |
| 74 | |
| 75 | TEST(AudioUtilTest, FloatS16ToFloat) { |
Per Åhgren | 62c174c | 2019-08-16 13:43:00 +0200 | [diff] [blame] | 76 | static constexpr float kInput[] = {0.f, 0.4f, 0.6f, -0.4f, -0.6f, |
| 77 | 32767.f, -32768.f, 32767.f, -32768.f}; |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 78 | static constexpr float kReference[] = {0.f, |
Per Åhgren | 62c174c | 2019-08-16 13:43:00 +0200 | [diff] [blame] | 79 | 0.4f / 32768.f, |
| 80 | 0.6f / 32768.f, |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 81 | -0.4f / 32768.f, |
| 82 | -0.6f / 32768.f, |
| 83 | 1.f, |
| 84 | -1.f, |
Per Åhgren | 62c174c | 2019-08-16 13:43:00 +0200 | [diff] [blame] | 85 | 1.f, |
| 86 | -1.f}; |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 87 | static constexpr size_t kSize = arraysize(kInput); |
| 88 | static_assert(arraysize(kReference) == kSize, ""); |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 89 | float output[kSize]; |
| 90 | FloatS16ToFloat(kInput, kSize, output); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 91 | ExpectArraysEq(kReference, output, kSize); |
andrew@webrtc.org | b159c2e | 2013-09-06 21:15:55 +0000 | [diff] [blame] | 92 | } |
| 93 | |
Alex Loiko | 6df09f6 | 2018-02-16 10:42:48 +0100 | [diff] [blame] | 94 | TEST(AudioUtilTest, DbfsToFloatS16) { |
| 95 | static constexpr float kInput[] = {-90.f, -70.f, -30.f, -20.f, -10.f, |
| 96 | -5.f, -1.f, 0.f, 1.f}; |
| 97 | static constexpr float kReference[] = { |
| 98 | 1.036215186f, 10.36215115f, 1036.215088f, 3276.800049f, 10362.15137f, |
| 99 | 18426.80078f, 29204.51172f, 32768.f, 36766.30078f}; |
| 100 | static constexpr size_t kSize = arraysize(kInput); |
| 101 | static_assert(arraysize(kReference) == kSize, ""); |
| 102 | float output[kSize]; |
| 103 | for (size_t i = 0; i < kSize; ++i) { |
| 104 | output[i] = DbfsToFloatS16(kInput[i]); |
| 105 | } |
| 106 | ExpectArraysEq(kReference, output, kSize); |
| 107 | } |
| 108 | |
| 109 | TEST(AudioUtilTest, FloatS16ToDbfs) { |
| 110 | static constexpr float kInput[] = {1.036215143f, 10.36215143f, 1036.215143f, |
| 111 | 3276.8f, 10362.151436f, 18426.800543f, |
| 112 | 29204.51074f, 32768.0f, 36766.30071f}; |
| 113 | |
| 114 | static constexpr float kReference[] = { |
| 115 | -90.f, -70.f, -30.f, -20.f, -10.f, -5.f, -1.f, 0.f, 0.9999923706f}; |
| 116 | static constexpr size_t kSize = arraysize(kInput); |
| 117 | static_assert(arraysize(kReference) == kSize, ""); |
| 118 | |
| 119 | float output[kSize]; |
| 120 | for (size_t i = 0; i < kSize; ++i) { |
| 121 | output[i] = FloatS16ToDbfs(kInput[i]); |
| 122 | } |
| 123 | ExpectArraysEq(kReference, output, kSize); |
| 124 | } |
| 125 | |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 126 | TEST(AudioUtilTest, InterleavingStereo) { |
| 127 | const int16_t kInterleaved[] = {2, 3, 4, 9, 8, 27, 16, 81}; |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 128 | const size_t kSamplesPerChannel = 4; |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 129 | const int kNumChannels = 2; |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 130 | const size_t kLength = kSamplesPerChannel * kNumChannels; |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 131 | int16_t left[kSamplesPerChannel], right[kSamplesPerChannel]; |
| 132 | int16_t* deinterleaved[] = {left, right}; |
| 133 | Deinterleave(kInterleaved, kSamplesPerChannel, kNumChannels, deinterleaved); |
| 134 | const int16_t kRefLeft[] = {2, 4, 8, 16}; |
| 135 | const int16_t kRefRight[] = {3, 9, 27, 81}; |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 136 | ExpectArraysEq(kRefLeft, left, kSamplesPerChannel); |
| 137 | ExpectArraysEq(kRefRight, right, kSamplesPerChannel); |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 138 | |
| 139 | int16_t interleaved[kLength]; |
| 140 | Interleave(deinterleaved, kSamplesPerChannel, kNumChannels, interleaved); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 141 | ExpectArraysEq(kInterleaved, interleaved, kLength); |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | TEST(AudioUtilTest, InterleavingMonoIsIdentical) { |
| 145 | const int16_t kInterleaved[] = {1, 2, 3, 4, 5}; |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 146 | const size_t kSamplesPerChannel = 5; |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 147 | const int kNumChannels = 1; |
| 148 | int16_t mono[kSamplesPerChannel]; |
| 149 | int16_t* deinterleaved[] = {mono}; |
| 150 | Deinterleave(kInterleaved, kSamplesPerChannel, kNumChannels, deinterleaved); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 151 | ExpectArraysEq(kInterleaved, mono, kSamplesPerChannel); |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 152 | |
| 153 | int16_t interleaved[kSamplesPerChannel]; |
| 154 | Interleave(deinterleaved, kSamplesPerChannel, kNumChannels, interleaved); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 155 | ExpectArraysEq(mono, interleaved, kSamplesPerChannel); |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 156 | } |
| 157 | |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 158 | TEST(AudioUtilTest, DownmixInterleavedToMono) { |
| 159 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 160 | const size_t kNumFrames = 4; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 161 | const int kNumChannels = 1; |
| 162 | const int16_t interleaved[kNumChannels * kNumFrames] = {1, 2, -1, -3}; |
| 163 | int16_t deinterleaved[kNumFrames]; |
| 164 | |
| 165 | DownmixInterleavedToMono(interleaved, kNumFrames, kNumChannels, |
| 166 | deinterleaved); |
| 167 | |
| 168 | EXPECT_THAT(deinterleaved, ElementsAreArray(interleaved)); |
| 169 | } |
| 170 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 171 | const size_t kNumFrames = 2; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 172 | const int kNumChannels = 2; |
| 173 | const int16_t interleaved[kNumChannels * kNumFrames] = {10, 20, -10, -30}; |
| 174 | int16_t deinterleaved[kNumFrames]; |
| 175 | |
| 176 | DownmixInterleavedToMono(interleaved, kNumFrames, kNumChannels, |
| 177 | deinterleaved); |
| 178 | const int16_t expected[kNumFrames] = {15, -20}; |
| 179 | |
| 180 | EXPECT_THAT(deinterleaved, ElementsAreArray(expected)); |
| 181 | } |
| 182 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 183 | const size_t kNumFrames = 3; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 184 | const int kNumChannels = 3; |
| 185 | const int16_t interleaved[kNumChannels * kNumFrames] = { |
| 186 | 30000, 30000, 24001, -5, -10, -20, -30000, -30999, -30000}; |
| 187 | int16_t deinterleaved[kNumFrames]; |
| 188 | |
| 189 | DownmixInterleavedToMono(interleaved, kNumFrames, kNumChannels, |
| 190 | deinterleaved); |
| 191 | const int16_t expected[kNumFrames] = {28000, -11, -30333}; |
| 192 | |
| 193 | EXPECT_THAT(deinterleaved, ElementsAreArray(expected)); |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | TEST(AudioUtilTest, DownmixToMonoTest) { |
| 198 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 199 | const size_t kNumFrames = 4; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 200 | const int kNumChannels = 1; |
| 201 | const float input_data[kNumChannels][kNumFrames] = {{1.f, 2.f, -1.f, -3.f}}; |
| 202 | const float* input[kNumChannels]; |
| 203 | for (int i = 0; i < kNumChannels; ++i) { |
| 204 | input[i] = input_data[i]; |
| 205 | } |
| 206 | |
| 207 | float downmixed[kNumFrames]; |
| 208 | |
| 209 | DownmixToMono<float, float>(input, kNumFrames, kNumChannels, downmixed); |
| 210 | |
| 211 | EXPECT_THAT(downmixed, ElementsAreArray(input_data[0])); |
| 212 | } |
| 213 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 214 | const size_t kNumFrames = 3; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 215 | const int kNumChannels = 2; |
| 216 | const float input_data[kNumChannels][kNumFrames] = {{1.f, 2.f, -1.f}, |
| 217 | {3.f, 0.f, 1.f}}; |
| 218 | const float* input[kNumChannels]; |
| 219 | for (int i = 0; i < kNumChannels; ++i) { |
| 220 | input[i] = input_data[i]; |
| 221 | } |
| 222 | |
| 223 | float downmixed[kNumFrames]; |
| 224 | const float expected[kNumFrames] = {2.f, 1.f, 0.f}; |
| 225 | |
| 226 | DownmixToMono<float, float>(input, kNumFrames, kNumChannels, downmixed); |
| 227 | |
| 228 | EXPECT_THAT(downmixed, ElementsAreArray(expected)); |
| 229 | } |
| 230 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 231 | const size_t kNumFrames = 3; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 232 | const int kNumChannels = 3; |
| 233 | const int16_t input_data[kNumChannels][kNumFrames] = { |
| 234 | {30000, -5, -30000}, {30000, -10, -30999}, {24001, -20, -30000}}; |
| 235 | const int16_t* input[kNumChannels]; |
| 236 | for (int i = 0; i < kNumChannels; ++i) { |
| 237 | input[i] = input_data[i]; |
| 238 | } |
| 239 | |
| 240 | int16_t downmixed[kNumFrames]; |
| 241 | const int16_t expected[kNumFrames] = {28000, -11, -30333}; |
| 242 | |
| 243 | DownmixToMono<int16_t, int32_t>(input, kNumFrames, kNumChannels, downmixed); |
| 244 | |
| 245 | EXPECT_THAT(downmixed, ElementsAreArray(expected)); |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | } // namespace |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 250 | } // namespace webrtc |