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