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| 1 /* |
| 2 * Copyright (c) 2015 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 |
| 11 #include "webrtc/modules/audio_processing/audio_buffer.h" |
| 12 #include "testing/gtest/include/gtest/gtest.h" |
| 13 #include "testing/gmock/include/gmock/gmock.h" |
| 14 |
| 15 namespace webrtc { |
| 16 namespace { |
| 17 |
| 18 using ::testing::ElementsAreArray; |
| 19 |
| 20 TEST(AudioBufferHelpersTest, DownmixInterleavedToMonoImpl) { |
| 21 { |
| 22 const int kNumMultichannelFrames = 4; |
| 23 const int kNumChannels = 1; |
| 24 const float interleaved[kNumChannels * kNumMultichannelFrames] = { |
| 25 1.f, 2.f, -1.f, -3.f}; |
| 26 float deinterleaved[kNumMultichannelFrames]; |
| 27 |
| 28 DownmixInterleavedToMonoImpl<float, float>( |
| 29 interleaved, deinterleaved, kNumMultichannelFrames, kNumChannels); |
| 30 |
| 31 EXPECT_THAT(deinterleaved, ElementsAreArray(interleaved)); |
| 32 } |
| 33 { |
| 34 const int kNumMultichannelFrames = 2; |
| 35 const int kNumChannels = 2; |
| 36 const float interleaved[kNumChannels * kNumMultichannelFrames] = { |
| 37 1.f, 2.f, -1.f, -3.f}; |
| 38 float deinterleaved[kNumMultichannelFrames]; |
| 39 |
| 40 DownmixInterleavedToMonoImpl<float, float>( |
| 41 interleaved, deinterleaved, kNumMultichannelFrames, kNumChannels); |
| 42 const float expected[kNumMultichannelFrames] = {1.5f, -2.f}; |
| 43 |
| 44 EXPECT_THAT(deinterleaved, ElementsAreArray(expected)); |
| 45 } |
| 46 { |
| 47 const int kNumMultichannelFrames = 2; |
| 48 const int kNumChannels = 3; |
| 49 const float interleaved[kNumChannels * kNumMultichannelFrames] = { |
| 50 1.f, 2.f, 3.f, -1.f, -3.f, 7.f}; |
| 51 float deinterleaved[kNumMultichannelFrames]; |
| 52 |
| 53 DownmixInterleavedToMonoImpl<float, float>( |
| 54 interleaved, deinterleaved, kNumMultichannelFrames, kNumChannels); |
| 55 const float expected[kNumMultichannelFrames] = {2.f, 1.f}; |
| 56 |
| 57 EXPECT_THAT(deinterleaved, ElementsAreArray(expected)); |
| 58 } |
| 59 { |
| 60 const int kNumMultichannelFrames = 2; |
| 61 const int kNumChannels = 2; |
| 62 const int16_t interleaved[kNumChannels * kNumMultichannelFrames] = { |
| 63 10, 20, -10, -30}; |
| 64 int16_t deinterleaved[kNumMultichannelFrames]; |
| 65 |
| 66 DownmixInterleavedToMonoImpl<int16_t, int32_t>( |
| 67 interleaved, deinterleaved, kNumMultichannelFrames, kNumChannels); |
| 68 const int16_t expected[kNumMultichannelFrames] = {15, -20}; |
| 69 |
| 70 EXPECT_THAT(deinterleaved, ElementsAreArray(expected)); |
| 71 } |
| 72 { |
| 73 const int kNumMultichannelFrames = 3; |
| 74 const int kNumChannels = 3; |
| 75 const int16_t interleaved[kNumChannels * kNumMultichannelFrames] = { |
| 76 30000, 30000, 24001, -5, -10, -20, -30000, -30999, -30000}; |
| 77 int16_t deinterleaved[kNumMultichannelFrames]; |
| 78 |
| 79 DownmixInterleavedToMonoImpl<int16_t, int32_t>( |
| 80 interleaved, deinterleaved, kNumMultichannelFrames, kNumChannels); |
| 81 const int16_t expected[kNumMultichannelFrames] = {28000, -11, -30333}; |
| 82 |
| 83 EXPECT_THAT(deinterleaved, ElementsAreArray(expected)); |
| 84 } |
| 85 } |
| 86 |
| 87 TEST(AudioBufferHelpersTest, DownmixToMonoTest) { |
| 88 { |
| 89 const int kNumMultichannelFrames = 4; |
| 90 const int kNumChannels = 1; |
| 91 const float input_data[kNumChannels][kNumMultichannelFrames] = { |
| 92 {1.f, 2.f, -1.f, -3.f}}; |
| 93 const float* input[kNumChannels]; |
| 94 for (int i = 0; i < kNumChannels; ++i) { |
| 95 input[i] = input_data[i]; |
| 96 } |
| 97 |
| 98 float downmixed[kNumMultichannelFrames]; |
| 99 |
| 100 DownmixToMono<float, float>(kNumMultichannelFrames, downmixed, input, |
| 101 kNumChannels); |
| 102 |
| 103 EXPECT_THAT(downmixed, ElementsAreArray(input_data[0])); |
| 104 } |
| 105 { |
| 106 const int kNumMultichannelFrames = 3; |
| 107 const int kNumChannels = 2; |
| 108 const float input_data[kNumChannels][kNumMultichannelFrames] = { |
| 109 {1.f, 2.f, -1.f}, {3.f, 0.f, 1.f}}; |
| 110 const float* input[kNumChannels]; |
| 111 for (int i = 0; i < kNumChannels; ++i) { |
| 112 input[i] = input_data[i]; |
| 113 } |
| 114 |
| 115 float downmixed[kNumMultichannelFrames]; |
| 116 const float expected[kNumMultichannelFrames] = {2.f, 1.f, 0.f}; |
| 117 |
| 118 DownmixToMono<float, float>(kNumMultichannelFrames, downmixed, input, |
| 119 kNumChannels); |
| 120 |
| 121 EXPECT_THAT(downmixed, ElementsAreArray(expected)); |
| 122 } |
| 123 { |
| 124 const int kNumMultichannelFrames = 3; |
| 125 const int kNumChannels = 3; |
| 126 const int16_t input_data[kNumChannels][kNumMultichannelFrames] = { |
| 127 {30000, -5, -30000}, {30000, -10, -30999}, {24001, -20, -30000}}; |
| 128 const int16_t* input[kNumChannels]; |
| 129 for (int i = 0; i < kNumChannels; ++i) { |
| 130 input[i] = input_data[i]; |
| 131 } |
| 132 |
| 133 int16_t downmixed[kNumMultichannelFrames]; |
| 134 const int16_t expected[kNumMultichannelFrames] = {28000, -11, -30333}; |
| 135 |
| 136 DownmixToMono<int16_t, int32_t>(kNumMultichannelFrames, downmixed, input, |
| 137 kNumChannels); |
| 138 |
| 139 EXPECT_THAT(downmixed, ElementsAreArray(expected)); |
| 140 } |
| 141 } |
| 142 |
| 143 } // namespace |
| 144 } // namespace webrtc |
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