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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" | |
12 #include "testing/gtest/include/gtest/gtest.h" | 11 #include "testing/gtest/include/gtest/gtest.h" |
13 #include "webrtc/common_audio/include/audio_util.h" | 12 #include "webrtc/common_audio/include/audio_util.h" |
14 #include "webrtc/typedefs.h" | 13 #include "webrtc/typedefs.h" |
15 | 14 |
16 namespace webrtc { | 15 namespace webrtc { |
17 namespace { | |
18 | |
19 using ::testing::ElementsAreArray; | |
20 | 16 |
21 void ExpectArraysEq(const int16_t* ref, const int16_t* test, int length) { | 17 void ExpectArraysEq(const int16_t* ref, const int16_t* test, int length) { |
22 for (int i = 0; i < length; ++i) { | 18 for (int i = 0; i < length; ++i) { |
23 EXPECT_EQ(ref[i], test[i]); | 19 EXPECT_EQ(ref[i], test[i]); |
24 } | 20 } |
25 } | 21 } |
26 | 22 |
27 void ExpectArraysEq(const float* ref, const float* test, int length) { | 23 void ExpectArraysEq(const float* ref, const float* test, int length) { |
28 for (int i = 0; i < length; ++i) { | 24 for (int i = 0; i < length; ++i) { |
29 EXPECT_FLOAT_EQ(ref[i], test[i]); | 25 EXPECT_FLOAT_EQ(ref[i], test[i]); |
30 } | 26 } |
31 } | 27 } |
32 | 28 |
33 TEST(AudioUtilTest, FloatToS16) { | 29 TEST(AudioUtilTest, FloatToS16) { |
34 const int kSize = 9; | 30 const int kSize = 9; |
35 const float kInput[kSize] = {0.f, | 31 const float kInput[kSize] = { |
36 0.4f / 32767.f, | 32 0.f, 0.4f / 32767.f, 0.6f / 32767.f, -0.4f / 32768.f, -0.6f / 32768.f, |
37 0.6f / 32767.f, | 33 1.f, -1.f, 1.1f, -1.1f}; |
38 -0.4f / 32768.f, | 34 const int16_t kReference[kSize] = { |
39 -0.6f / 32768.f, | 35 0, 0, 1, 0, -1, 32767, -32768, 32767, -32768}; |
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}; | |
46 int16_t output[kSize]; | 36 int16_t output[kSize]; |
47 FloatToS16(kInput, kSize, output); | 37 FloatToS16(kInput, kSize, output); |
48 ExpectArraysEq(kReference, output, kSize); | 38 ExpectArraysEq(kReference, output, kSize); |
49 } | 39 } |
50 | 40 |
51 TEST(AudioUtilTest, S16ToFloat) { | 41 TEST(AudioUtilTest, S16ToFloat) { |
52 const int kSize = 7; | 42 const int kSize = 7; |
53 const int16_t kInput[kSize] = {0, 1, -1, 16384, -16384, 32767, -32768}; | 43 const int16_t kInput[kSize] = {0, 1, -1, 16384, -16384, 32767, -32768}; |
54 const float kReference[kSize] = { | 44 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}; | 45 0.f, 1.f / 32767.f, -1.f / 32768.f, 16384.f / 32767.f, -0.5f, 1.f, -1.f}; |
56 float output[kSize]; | 46 float output[kSize]; |
57 S16ToFloat(kInput, kSize, output); | 47 S16ToFloat(kInput, kSize, output); |
58 ExpectArraysEq(kReference, output, kSize); | 48 ExpectArraysEq(kReference, output, kSize); |
59 } | 49 } |
60 | 50 |
61 TEST(AudioUtilTest, FloatS16ToS16) { | 51 TEST(AudioUtilTest, FloatS16ToS16) { |
62 const int kSize = 7; | 52 const int kSize = 7; |
63 const float kInput[kSize] = {0.f, 0.4f, 0.5f, -0.4f, | 53 const float kInput[kSize] = { |
64 -0.5f, 32768.f, -32769.f}; | 54 0.f, 0.4f, 0.5f, -0.4f, -0.5f, 32768.f, -32769.f}; |
65 const int16_t kReference[kSize] = {0, 0, 1, 0, -1, 32767, -32768}; | 55 const int16_t kReference[kSize] = {0, 0, 1, 0, -1, 32767, -32768}; |
66 int16_t output[kSize]; | 56 int16_t output[kSize]; |
67 FloatS16ToS16(kInput, kSize, output); | 57 FloatS16ToS16(kInput, kSize, output); |
68 ExpectArraysEq(kReference, output, kSize); | 58 ExpectArraysEq(kReference, output, kSize); |
69 } | 59 } |
70 | 60 |
71 TEST(AudioUtilTest, FloatToFloatS16) { | 61 TEST(AudioUtilTest, FloatToFloatS16) { |
72 const int kSize = 9; | 62 const int kSize = 9; |
73 const float kInput[kSize] = {0.f, | 63 const float kInput[kSize] = { |
74 0.4f / 32767.f, | 64 0.f, 0.4f / 32767.f, 0.6f / 32767.f, -0.4f / 32768.f, -0.6f / 32768.f, |
75 0.6f / 32767.f, | 65 1.f, -1.f, 1.1f, -1.1f}; |
76 -0.4f / 32768.f, | 66 const float kReference[kSize] = { |
77 -0.6f / 32768.f, | 67 0.f, 0.4f, 0.6f, -0.4f, -0.6f, 32767.f, -32768.f, 36043.7f, -36044.8f}; |
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}; | |
84 float output[kSize]; | 68 float output[kSize]; |
85 FloatToFloatS16(kInput, kSize, output); | 69 FloatToFloatS16(kInput, kSize, output); |
86 ExpectArraysEq(kReference, output, kSize); | 70 ExpectArraysEq(kReference, output, kSize); |
87 } | 71 } |
88 | 72 |
89 TEST(AudioUtilTest, FloatS16ToFloat) { | 73 TEST(AudioUtilTest, FloatS16ToFloat) { |
90 const int kSize = 9; | 74 const int kSize = 9; |
91 const float kInput[kSize] = {0.f, 0.4f, 0.6f, -0.4f, -0.6f, | 75 const float kInput[kSize] = { |
92 32767.f, -32768.f, 36043.7f, -36044.8f}; | 76 0.f, 0.4f, 0.6f, -0.4f, -0.6f, 32767.f, -32768.f, 36043.7f, -36044.8f}; |
93 const float kReference[kSize] = {0.f, | 77 const float kReference[kSize] = { |
94 0.4f / 32767.f, | 78 0.f, 0.4f / 32767.f, 0.6f / 32767.f, -0.4f / 32768.f, -0.6f / 32768.f, |
95 0.6f / 32767.f, | 79 1.f, -1.f, 1.1f, -1.1f}; |
96 -0.4f / 32768.f, | |
97 -0.6f / 32768.f, | |
98 1.f, | |
99 -1.f, | |
100 1.1f, | |
101 -1.1f}; | |
102 float output[kSize]; | 80 float output[kSize]; |
103 FloatS16ToFloat(kInput, kSize, output); | 81 FloatS16ToFloat(kInput, kSize, output); |
104 ExpectArraysEq(kReference, output, kSize); | 82 ExpectArraysEq(kReference, output, kSize); |
105 } | 83 } |
106 | 84 |
107 TEST(AudioUtilTest, InterleavingStereo) { | 85 TEST(AudioUtilTest, InterleavingStereo) { |
108 const int16_t kInterleaved[] = {2, 3, 4, 9, 8, 27, 16, 81}; | 86 const int16_t kInterleaved[] = {2, 3, 4, 9, 8, 27, 16, 81}; |
109 const int kSamplesPerChannel = 4; | 87 const int kSamplesPerChannel = 4; |
110 const int kNumChannels = 2; | 88 const int kNumChannels = 2; |
111 const int kLength = kSamplesPerChannel * kNumChannels; | 89 const int kLength = kSamplesPerChannel * kNumChannels; |
(...skipping 17 matching lines...) Expand all Loading... |
129 int16_t mono[kSamplesPerChannel]; | 107 int16_t mono[kSamplesPerChannel]; |
130 int16_t* deinterleaved[] = {mono}; | 108 int16_t* deinterleaved[] = {mono}; |
131 Deinterleave(kInterleaved, kSamplesPerChannel, kNumChannels, deinterleaved); | 109 Deinterleave(kInterleaved, kSamplesPerChannel, kNumChannels, deinterleaved); |
132 ExpectArraysEq(kInterleaved, mono, kSamplesPerChannel); | 110 ExpectArraysEq(kInterleaved, mono, kSamplesPerChannel); |
133 | 111 |
134 int16_t interleaved[kSamplesPerChannel]; | 112 int16_t interleaved[kSamplesPerChannel]; |
135 Interleave(deinterleaved, kSamplesPerChannel, kNumChannels, interleaved); | 113 Interleave(deinterleaved, kSamplesPerChannel, kNumChannels, interleaved); |
136 ExpectArraysEq(mono, interleaved, kSamplesPerChannel); | 114 ExpectArraysEq(mono, interleaved, kSamplesPerChannel); |
137 } | 115 } |
138 | 116 |
139 TEST(AudioUtilTest, DownmixInterleavedToMono) { | |
140 { | |
141 const int kNumFrames = 4; | |
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 { | |
152 const int kNumFrames = 2; | |
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 { | |
164 const int kNumFrames = 3; | |
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 { | |
180 const int kNumFrames = 4; | |
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 { | |
195 const int kNumFrames = 3; | |
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 { | |
212 const int kNumFrames = 3; | |
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 | |
231 } // namespace webrtc | 117 } // namespace webrtc |
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