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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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 #include "base/basictypes.h" | 5 #include "base/basictypes.h" |
6 #include "media/audio/audio_util.h" | 6 #include "media/audio/audio_util.h" |
7 #include "testing/gtest/include/gtest/gtest.h" | 7 #include "testing/gtest/include/gtest/gtest.h" |
8 | 8 |
9 // Number of samples in each audio array. | 9 // Number of samples in each audio array. |
10 static const size_t kNumberOfSamples = 4; | 10 static const size_t kNumberOfSamples = 4; |
11 | 11 |
12 namespace media { | 12 namespace media { |
13 | 13 |
14 TEST(AudioUtilTest, AdjustVolume_u8) { | 14 TEST(AudioUtilTest, AdjustVolume_u8) { |
15 // Test AdjustVolume() on 8 bit samples. | 15 // Test AdjustVolume() on 8 bit samples. |
16 uint8 samples_u8[kNumberOfSamples] = { 4, 0x40, 0x80, 0xff }; | 16 uint8 samples_u8[kNumberOfSamples] = { 4, 0x40, 0x80, 0xff }; |
17 uint8 expected_u8[kNumberOfSamples] = { (4 - 128) / 2 + 128, | 17 uint8 expected_u8[kNumberOfSamples] = { (4 - 128) / 2 + 128, |
18 (0x40 - 128) / 2 + 128, | 18 (0x40 - 128) / 2 + 128, |
19 (0x80 - 128) / 2 + 128, | 19 (0x80 - 128) / 2 + 128, |
20 (0xff - 128) / 2 + 128 }; | 20 (0xff - 128) / 2 + 128 }; |
21 bool result_u8 = media::AdjustVolume(samples_u8, sizeof(samples_u8), | 21 bool result_u8 = media::AdjustVolume(samples_u8, sizeof(samples_u8), |
22 1, // channels. | 22 1, // channels. |
23 sizeof(samples_u8[0]), | 23 sizeof(samples_u8[0]), |
24 0.5f); | 24 0.5f); |
25 EXPECT_EQ(true, result_u8); | 25 EXPECT_TRUE(result_u8); |
26 int expected_test = memcmp(samples_u8, expected_u8, sizeof(expected_u8)); | 26 int expected_test = memcmp(samples_u8, expected_u8, sizeof(expected_u8)); |
27 EXPECT_EQ(0, expected_test); | 27 EXPECT_EQ(0, expected_test); |
28 } | 28 } |
29 | 29 |
30 TEST(AudioUtilTest, AdjustVolume_s16) { | 30 TEST(AudioUtilTest, AdjustVolume_s16) { |
31 // Test AdjustVolume() on 16 bit samples. | 31 // Test AdjustVolume() on 16 bit samples. |
32 int16 samples_s16[kNumberOfSamples] = { -4, 0x40, -32768, 123 }; | 32 int16 samples_s16[kNumberOfSamples] = { -4, 0x40, -32768, 123 }; |
33 int16 expected_s16[kNumberOfSamples] = { -1, 0x10, -8192, 30 }; | 33 int16 expected_s16[kNumberOfSamples] = { -1, 0x10, -8192, 30 }; |
34 bool result_s16 = media::AdjustVolume(samples_s16, sizeof(samples_s16), | 34 bool result_s16 = media::AdjustVolume(samples_s16, sizeof(samples_s16), |
35 2, // channels. | 35 2, // channels. |
36 sizeof(samples_s16[0]), | 36 sizeof(samples_s16[0]), |
37 0.25f); | 37 0.25f); |
38 EXPECT_EQ(true, result_s16); | 38 EXPECT_TRUE(result_s16); |
39 int expected_test = memcmp(samples_s16, expected_s16, sizeof(expected_s16)); | 39 int expected_test = memcmp(samples_s16, expected_s16, sizeof(expected_s16)); |
40 EXPECT_EQ(0, expected_test); | 40 EXPECT_EQ(0, expected_test); |
41 } | 41 } |
42 | 42 |
43 TEST(AudioUtilTest, AdjustVolume_s16_zero) { | 43 TEST(AudioUtilTest, AdjustVolume_s16_zero) { |
44 // Test AdjustVolume() on 16 bit samples. | 44 // Test AdjustVolume() on 16 bit samples. |
45 int16 samples_s16[kNumberOfSamples] = { -4, 0x40, -32768, 123 }; | 45 int16 samples_s16[kNumberOfSamples] = { -4, 0x40, -32768, 123 }; |
46 int16 expected_s16[kNumberOfSamples] = { 0, 0, 0, 0 }; | 46 int16 expected_s16[kNumberOfSamples] = { 0, 0, 0, 0 }; |
47 bool result_s16 = media::AdjustVolume(samples_s16, sizeof(samples_s16), | 47 bool result_s16 = media::AdjustVolume(samples_s16, sizeof(samples_s16), |
48 2, // channels. | 48 2, // channels. |
49 sizeof(samples_s16[0]), | 49 sizeof(samples_s16[0]), |
50 0.0f); | 50 0.0f); |
51 EXPECT_EQ(true, result_s16); | 51 EXPECT_TRUE(result_s16); |
52 int expected_test = memcmp(samples_s16, expected_s16, sizeof(expected_s16)); | 52 int expected_test = memcmp(samples_s16, expected_s16, sizeof(expected_s16)); |
53 EXPECT_EQ(0, expected_test); | 53 EXPECT_EQ(0, expected_test); |
54 } | 54 } |
55 | 55 |
56 TEST(AudioUtilTest, AdjustVolume_s16_one) { | 56 TEST(AudioUtilTest, AdjustVolume_s16_one) { |
57 // Test AdjustVolume() on 16 bit samples. | 57 // Test AdjustVolume() on 16 bit samples. |
58 int16 samples_s16[kNumberOfSamples] = { -4, 0x40, -32768, 123 }; | 58 int16 samples_s16[kNumberOfSamples] = { -4, 0x40, -32768, 123 }; |
59 int16 expected_s16[kNumberOfSamples] = { -4, 0x40, -32768, 123 }; | 59 int16 expected_s16[kNumberOfSamples] = { -4, 0x40, -32768, 123 }; |
60 bool result_s16 = media::AdjustVolume(samples_s16, sizeof(samples_s16), | 60 bool result_s16 = media::AdjustVolume(samples_s16, sizeof(samples_s16), |
61 2, // channels. | 61 2, // channels. |
62 sizeof(samples_s16[0]), | 62 sizeof(samples_s16[0]), |
63 1.0f); | 63 1.0f); |
64 EXPECT_EQ(true, result_s16); | 64 EXPECT_TRUE(result_s16); |
65 int expected_test = memcmp(samples_s16, expected_s16, sizeof(expected_s16)); | 65 int expected_test = memcmp(samples_s16, expected_s16, sizeof(expected_s16)); |
66 EXPECT_EQ(0, expected_test); | 66 EXPECT_EQ(0, expected_test); |
67 } | 67 } |
68 | 68 |
69 TEST(AudioUtilTest, AdjustVolume_s32) { | 69 TEST(AudioUtilTest, AdjustVolume_s32) { |
70 // Test AdjustVolume() on 32 bit samples. | 70 // Test AdjustVolume() on 32 bit samples. |
71 int32 samples_s32[kNumberOfSamples] = { -4, 0x40, -32768, 123 }; | 71 int32 samples_s32[kNumberOfSamples] = { -4, 0x40, -32768, 123 }; |
72 int32 expected_s32[kNumberOfSamples] = { -1, 0x10, -8192, 30 }; | 72 int32 expected_s32[kNumberOfSamples] = { -1, 0x10, -8192, 30 }; |
73 bool result_s32 = media::AdjustVolume(samples_s32, sizeof(samples_s32), | 73 bool result_s32 = media::AdjustVolume(samples_s32, sizeof(samples_s32), |
74 4, // channels. | 74 4, // channels. |
75 sizeof(samples_s32[0]), | 75 sizeof(samples_s32[0]), |
76 0.25f); | 76 0.25f); |
77 EXPECT_EQ(true, result_s32); | 77 EXPECT_TRUE(result_s32); |
78 int expected_test = memcmp(samples_s32, expected_s32, sizeof(expected_s32)); | 78 int expected_test = memcmp(samples_s32, expected_s32, sizeof(expected_s32)); |
79 EXPECT_EQ(0, expected_test); | 79 EXPECT_EQ(0, expected_test); |
80 } | 80 } |
81 | 81 |
82 TEST(AudioUtilTest, FoldChannels_u8) { | 82 TEST(AudioUtilTest, FoldChannels_u8) { |
83 // Test FoldChannels() on 8 bit samples. | 83 // Test FoldChannels() on 8 bit samples. |
84 uint8 samples_u8[6] = { 100, 150, 130, 70, 130, 170 }; | 84 uint8 samples_u8[6] = { 100, 150, 130, 70, 130, 170 }; |
85 uint8 expected_u8[2] = { static_cast<uint8>((130 - 128) * 0.707 + | 85 uint8 expected_u8[2] = { static_cast<uint8>((130 - 128) * 0.707 + |
86 (100 - 128) + 128), | 86 (100 - 128) + 128), |
87 static_cast<uint8>((130 - 128) * 0.707 + | 87 static_cast<uint8>((130 - 128) * 0.707 + |
88 (150 - 128) + 128) }; | 88 (150 - 128) + 128) }; |
89 bool result_u8 = media::FoldChannels(samples_u8, sizeof(samples_u8), | 89 bool result_u8 = media::FoldChannels(samples_u8, sizeof(samples_u8), |
90 6, // channels. | 90 6, // channels. |
91 sizeof(samples_u8[0]), | 91 sizeof(samples_u8[0]), |
92 1.0f); | 92 1.0f); |
93 EXPECT_EQ(true, result_u8); | 93 EXPECT_TRUE(result_u8); |
94 int expected_test = memcmp(samples_u8, expected_u8, sizeof(expected_u8)); | 94 int expected_test = memcmp(samples_u8, expected_u8, sizeof(expected_u8)); |
95 EXPECT_EQ(0, expected_test); | 95 EXPECT_EQ(0, expected_test); |
96 } | 96 } |
97 | 97 |
98 TEST(AudioUtilTest, FoldChannels_s16) { | 98 TEST(AudioUtilTest, FoldChannels_s16) { |
99 // Test FoldChannels() on 16 bit samples. | 99 // Test FoldChannels() on 16 bit samples. |
100 int16 samples_s16[6] = { 1, 3, 12, 7, 13, 17 }; | 100 int16 samples_s16[6] = { 1, 3, 12, 7, 13, 17 }; |
101 int16 expected_s16[2] = { static_cast<int16>(12 * .707 + 1), | 101 int16 expected_s16[2] = { static_cast<int16>(12 * .707 + 1), |
102 static_cast<int16>(12 * .707 + 3) }; | 102 static_cast<int16>(12 * .707 + 3) }; |
103 bool result_s16 = media::FoldChannels(samples_s16, sizeof(samples_s16), | 103 bool result_s16 = media::FoldChannels(samples_s16, sizeof(samples_s16), |
104 6, // channels. | 104 6, // channels. |
105 sizeof(samples_s16[0]), | 105 sizeof(samples_s16[0]), |
106 1.00f); | 106 1.00f); |
107 EXPECT_EQ(true, result_s16); | 107 EXPECT_TRUE(result_s16); |
108 int expected_test = memcmp(samples_s16, expected_s16, sizeof(expected_s16)); | 108 int expected_test = memcmp(samples_s16, expected_s16, sizeof(expected_s16)); |
109 EXPECT_EQ(0, expected_test); | 109 EXPECT_EQ(0, expected_test); |
110 } | 110 } |
111 | 111 |
112 TEST(AudioUtilTest, FoldChannels_s32) { | 112 TEST(AudioUtilTest, FoldChannels_s32) { |
113 // Test FoldChannels() on 32 bit samples. | 113 // Test FoldChannels() on 32 bit samples. |
114 int32 samples_s32[6] = { 1, 3, 12, 7, 13, 17 }; | 114 int32 samples_s32[6] = { 1, 3, 12, 7, 13, 17 }; |
115 int32 expected_s32[2] = { static_cast<int16>(12 * .707 + 1), | 115 int32 expected_s32[2] = { static_cast<int16>(12 * .707 + 1), |
116 static_cast<int16>(12 * .707 + 3) }; | 116 static_cast<int16>(12 * .707 + 3) }; |
117 bool result_s32 = media::FoldChannels(samples_s32, sizeof(samples_s32), | 117 bool result_s32 = media::FoldChannels(samples_s32, sizeof(samples_s32), |
118 6, // channels. | 118 6, // channels. |
119 sizeof(samples_s32[0]), | 119 sizeof(samples_s32[0]), |
120 1.00f); | 120 1.00f); |
121 EXPECT_EQ(true, result_s32); | 121 EXPECT_TRUE(result_s32); |
122 int expected_test = memcmp(samples_s32, expected_s32, sizeof(expected_s32)); | 122 int expected_test = memcmp(samples_s32, expected_s32, sizeof(expected_s32)); |
123 EXPECT_EQ(0, expected_test); | 123 EXPECT_EQ(0, expected_test); |
124 } | 124 } |
125 | 125 |
126 // Fold 7.1 | 126 // Fold 7.1 |
127 TEST(AudioUtilTest, FoldChannels71_s16) { | 127 TEST(AudioUtilTest, FoldChannels71_s16) { |
128 // Test FoldChannels() on 16 bit samples. | 128 // Test FoldChannels() on 16 bit samples. |
129 int16 samples_s16[8] = { 1, 3, 12, 7, 13, 17, 30, 40 }; | 129 int16 samples_s16[8] = { 1, 3, 12, 7, 13, 17, 30, 40 }; |
130 int16 expected_s16[2] = { static_cast<int16>(12 * .707 + 1), | 130 int16 expected_s16[2] = { static_cast<int16>(12 * .707 + 1), |
131 static_cast<int16>(12 * .707 + 3) }; | 131 static_cast<int16>(12 * .707 + 3) }; |
132 bool result_s16 = media::FoldChannels(samples_s16, sizeof(samples_s16), | 132 bool result_s16 = media::FoldChannels(samples_s16, sizeof(samples_s16), |
133 8, // channels. | 133 8, // channels. |
134 sizeof(samples_s16[0]), | 134 sizeof(samples_s16[0]), |
135 1.00f); | 135 1.00f); |
136 EXPECT_EQ(true, result_s16); | 136 EXPECT_TRUE(result_s16); |
137 int expected_test = memcmp(samples_s16, expected_s16, sizeof(expected_s16)); | 137 int expected_test = memcmp(samples_s16, expected_s16, sizeof(expected_s16)); |
138 EXPECT_EQ(0, expected_test); | 138 EXPECT_EQ(0, expected_test); |
139 } | 139 } |
140 | 140 |
141 } // namespace media | 141 } // namespace media |
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