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" |
| 12 | #include "test/gmock.h" |
| 13 | #include "test/gtest.h" |
Mirko Bonadei | 7120742 | 2017-09-15 13:58:09 +0200 | [diff] [blame^] | 14 | #include "typedefs.h" // NOLINT(build/include) |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 15 | |
| 16 | namespace webrtc { |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 17 | namespace { |
| 18 | |
| 19 | using ::testing::ElementsAreArray; |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 20 | |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 21 | void ExpectArraysEq(const int16_t* ref, const int16_t* test, size_t length) { |
| 22 | for (size_t i = 0; i < length; ++i) { |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 23 | EXPECT_EQ(ref[i], test[i]); |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 24 | } |
| 25 | } |
| 26 | |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 27 | void ExpectArraysEq(const float* ref, const float* test, size_t length) { |
| 28 | for (size_t i = 0; i < length; ++i) { |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 29 | EXPECT_FLOAT_EQ(ref[i], test[i]); |
| 30 | } |
andrew@webrtc.org | b159c2e | 2013-09-06 21:15:55 +0000 | [diff] [blame] | 31 | } |
| 32 | |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 33 | TEST(AudioUtilTest, FloatToS16) { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 34 | const size_t kSize = 9; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 35 | const float kInput[kSize] = {0.f, |
| 36 | 0.4f / 32767.f, |
| 37 | 0.6f / 32767.f, |
| 38 | -0.4f / 32768.f, |
| 39 | -0.6f / 32768.f, |
| 40 | 1.f, |
| 41 | -1.f, |
| 42 | 1.1f, |
| 43 | -1.1f}; |
| 44 | const int16_t kReference[kSize] = {0, 0, 1, 0, -1, |
| 45 | 32767, -32768, 32767, -32768}; |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 46 | int16_t output[kSize]; |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 47 | FloatToS16(kInput, kSize, output); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 48 | ExpectArraysEq(kReference, output, kSize); |
| 49 | } |
| 50 | |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 51 | TEST(AudioUtilTest, S16ToFloat) { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 52 | const size_t kSize = 7; |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 53 | const int16_t kInput[kSize] = {0, 1, -1, 16384, -16384, 32767, -32768}; |
| 54 | const float kReference[kSize] = { |
| 55 | 0.f, 1.f / 32767.f, -1.f / 32768.f, 16384.f / 32767.f, -0.5f, 1.f, -1.f}; |
| 56 | float output[kSize]; |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 57 | S16ToFloat(kInput, kSize, output); |
| 58 | ExpectArraysEq(kReference, output, kSize); |
| 59 | } |
| 60 | |
| 61 | TEST(AudioUtilTest, FloatS16ToS16) { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 62 | const size_t kSize = 7; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 63 | const float kInput[kSize] = {0.f, 0.4f, 0.5f, -0.4f, |
| 64 | -0.5f, 32768.f, -32769.f}; |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 65 | const int16_t kReference[kSize] = {0, 0, 1, 0, -1, 32767, -32768}; |
| 66 | int16_t output[kSize]; |
| 67 | FloatS16ToS16(kInput, kSize, output); |
| 68 | ExpectArraysEq(kReference, output, kSize); |
| 69 | } |
| 70 | |
| 71 | TEST(AudioUtilTest, FloatToFloatS16) { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 72 | const size_t kSize = 9; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 73 | const float kInput[kSize] = {0.f, |
| 74 | 0.4f / 32767.f, |
| 75 | 0.6f / 32767.f, |
| 76 | -0.4f / 32768.f, |
| 77 | -0.6f / 32768.f, |
| 78 | 1.f, |
| 79 | -1.f, |
| 80 | 1.1f, |
| 81 | -1.1f}; |
| 82 | const float kReference[kSize] = {0.f, 0.4f, 0.6f, -0.4f, -0.6f, |
| 83 | 32767.f, -32768.f, 36043.7f, -36044.8f}; |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 84 | float output[kSize]; |
| 85 | FloatToFloatS16(kInput, kSize, output); |
| 86 | ExpectArraysEq(kReference, output, kSize); |
| 87 | } |
| 88 | |
| 89 | TEST(AudioUtilTest, FloatS16ToFloat) { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 90 | const size_t kSize = 9; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 91 | const float kInput[kSize] = {0.f, 0.4f, 0.6f, -0.4f, -0.6f, |
| 92 | 32767.f, -32768.f, 36043.7f, -36044.8f}; |
| 93 | const float kReference[kSize] = {0.f, |
| 94 | 0.4f / 32767.f, |
| 95 | 0.6f / 32767.f, |
| 96 | -0.4f / 32768.f, |
| 97 | -0.6f / 32768.f, |
| 98 | 1.f, |
| 99 | -1.f, |
| 100 | 1.1f, |
| 101 | -1.1f}; |
andrew@webrtc.org | 4fc4add | 2014-10-30 03:40:10 +0000 | [diff] [blame] | 102 | float output[kSize]; |
| 103 | FloatS16ToFloat(kInput, kSize, output); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 104 | ExpectArraysEq(kReference, output, kSize); |
andrew@webrtc.org | b159c2e | 2013-09-06 21:15:55 +0000 | [diff] [blame] | 105 | } |
| 106 | |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 107 | TEST(AudioUtilTest, InterleavingStereo) { |
| 108 | const int16_t kInterleaved[] = {2, 3, 4, 9, 8, 27, 16, 81}; |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 109 | const size_t kSamplesPerChannel = 4; |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 110 | const int kNumChannels = 2; |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 111 | const size_t kLength = kSamplesPerChannel * kNumChannels; |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 112 | int16_t left[kSamplesPerChannel], right[kSamplesPerChannel]; |
| 113 | int16_t* deinterleaved[] = {left, right}; |
| 114 | Deinterleave(kInterleaved, kSamplesPerChannel, kNumChannels, deinterleaved); |
| 115 | const int16_t kRefLeft[] = {2, 4, 8, 16}; |
| 116 | const int16_t kRefRight[] = {3, 9, 27, 81}; |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 117 | ExpectArraysEq(kRefLeft, left, kSamplesPerChannel); |
| 118 | ExpectArraysEq(kRefRight, right, kSamplesPerChannel); |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 119 | |
| 120 | int16_t interleaved[kLength]; |
| 121 | Interleave(deinterleaved, kSamplesPerChannel, kNumChannels, interleaved); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 122 | ExpectArraysEq(kInterleaved, interleaved, kLength); |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | TEST(AudioUtilTest, InterleavingMonoIsIdentical) { |
| 126 | const int16_t kInterleaved[] = {1, 2, 3, 4, 5}; |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 127 | const size_t kSamplesPerChannel = 5; |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 128 | const int kNumChannels = 1; |
| 129 | int16_t mono[kSamplesPerChannel]; |
| 130 | int16_t* deinterleaved[] = {mono}; |
| 131 | Deinterleave(kInterleaved, kSamplesPerChannel, kNumChannels, deinterleaved); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 132 | ExpectArraysEq(kInterleaved, mono, kSamplesPerChannel); |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 133 | |
| 134 | int16_t interleaved[kSamplesPerChannel]; |
| 135 | Interleave(deinterleaved, kSamplesPerChannel, kNumChannels, interleaved); |
andrew@webrtc.org | 17e4064 | 2014-03-04 20:58:13 +0000 | [diff] [blame] | 136 | ExpectArraysEq(mono, interleaved, kSamplesPerChannel); |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 137 | } |
| 138 | |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 139 | TEST(AudioUtilTest, DownmixInterleavedToMono) { |
| 140 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 141 | const size_t kNumFrames = 4; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 142 | const int kNumChannels = 1; |
| 143 | const int16_t interleaved[kNumChannels * kNumFrames] = {1, 2, -1, -3}; |
| 144 | int16_t deinterleaved[kNumFrames]; |
| 145 | |
| 146 | DownmixInterleavedToMono(interleaved, kNumFrames, kNumChannels, |
| 147 | deinterleaved); |
| 148 | |
| 149 | EXPECT_THAT(deinterleaved, ElementsAreArray(interleaved)); |
| 150 | } |
| 151 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 152 | const size_t kNumFrames = 2; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 153 | const int kNumChannels = 2; |
| 154 | const int16_t interleaved[kNumChannels * kNumFrames] = {10, 20, -10, -30}; |
| 155 | int16_t deinterleaved[kNumFrames]; |
| 156 | |
| 157 | DownmixInterleavedToMono(interleaved, kNumFrames, kNumChannels, |
| 158 | deinterleaved); |
| 159 | const int16_t expected[kNumFrames] = {15, -20}; |
| 160 | |
| 161 | EXPECT_THAT(deinterleaved, ElementsAreArray(expected)); |
| 162 | } |
| 163 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 164 | const size_t kNumFrames = 3; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 165 | const int kNumChannels = 3; |
| 166 | const int16_t interleaved[kNumChannels * kNumFrames] = { |
| 167 | 30000, 30000, 24001, -5, -10, -20, -30000, -30999, -30000}; |
| 168 | int16_t deinterleaved[kNumFrames]; |
| 169 | |
| 170 | DownmixInterleavedToMono(interleaved, kNumFrames, kNumChannels, |
| 171 | deinterleaved); |
| 172 | const int16_t expected[kNumFrames] = {28000, -11, -30333}; |
| 173 | |
| 174 | EXPECT_THAT(deinterleaved, ElementsAreArray(expected)); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | TEST(AudioUtilTest, DownmixToMonoTest) { |
| 179 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 180 | const size_t kNumFrames = 4; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 181 | const int kNumChannels = 1; |
| 182 | const float input_data[kNumChannels][kNumFrames] = {{1.f, 2.f, -1.f, -3.f}}; |
| 183 | const float* input[kNumChannels]; |
| 184 | for (int i = 0; i < kNumChannels; ++i) { |
| 185 | input[i] = input_data[i]; |
| 186 | } |
| 187 | |
| 188 | float downmixed[kNumFrames]; |
| 189 | |
| 190 | DownmixToMono<float, float>(input, kNumFrames, kNumChannels, downmixed); |
| 191 | |
| 192 | EXPECT_THAT(downmixed, ElementsAreArray(input_data[0])); |
| 193 | } |
| 194 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 195 | const size_t kNumFrames = 3; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 196 | const int kNumChannels = 2; |
| 197 | const float input_data[kNumChannels][kNumFrames] = {{1.f, 2.f, -1.f}, |
| 198 | {3.f, 0.f, 1.f}}; |
| 199 | const float* input[kNumChannels]; |
| 200 | for (int i = 0; i < kNumChannels; ++i) { |
| 201 | input[i] = input_data[i]; |
| 202 | } |
| 203 | |
| 204 | float downmixed[kNumFrames]; |
| 205 | const float expected[kNumFrames] = {2.f, 1.f, 0.f}; |
| 206 | |
| 207 | DownmixToMono<float, float>(input, kNumFrames, kNumChannels, downmixed); |
| 208 | |
| 209 | EXPECT_THAT(downmixed, ElementsAreArray(expected)); |
| 210 | } |
| 211 | { |
Peter Kasting | dce40cf | 2015-08-24 14:52:23 -0700 | [diff] [blame] | 212 | const size_t kNumFrames = 3; |
Michael Graczyk | 86c6d33 | 2015-07-23 11:41:39 -0700 | [diff] [blame] | 213 | const int kNumChannels = 3; |
| 214 | const int16_t input_data[kNumChannels][kNumFrames] = { |
| 215 | {30000, -5, -30000}, {30000, -10, -30999}, {24001, -20, -30000}}; |
| 216 | const int16_t* input[kNumChannels]; |
| 217 | for (int i = 0; i < kNumChannels; ++i) { |
| 218 | input[i] = input_data[i]; |
| 219 | } |
| 220 | |
| 221 | int16_t downmixed[kNumFrames]; |
| 222 | const int16_t expected[kNumFrames] = {28000, -11, -30333}; |
| 223 | |
| 224 | DownmixToMono<int16_t, int32_t>(input, kNumFrames, kNumChannels, downmixed); |
| 225 | |
| 226 | EXPECT_THAT(downmixed, ElementsAreArray(expected)); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | } // namespace |
andrew@webrtc.org | 50b2efe | 2013-04-29 17:27:29 +0000 | [diff] [blame] | 231 | } // namespace webrtc |