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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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