Per Åhgren | 4dd56a3 | 2019-11-19 20:00:59 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2013 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 "modules/audio_coding/acm2/acm_remixing.h" |
| 12 | |
| 13 | #include <vector> |
| 14 | |
| 15 | #include "api/audio/audio_frame.h" |
| 16 | #include "system_wrappers/include/clock.h" |
| 17 | #include "test/gmock.h" |
| 18 | #include "test/gtest.h" |
| 19 | #include "test/testsupport/file_utils.h" |
| 20 | |
| 21 | using ::testing::AllOf; |
| 22 | using ::testing::Each; |
| 23 | using ::testing::ElementsAreArray; |
| 24 | using ::testing::SizeIs; |
| 25 | |
| 26 | namespace webrtc { |
| 27 | |
| 28 | TEST(AcmRemixing, DownMixFrame) { |
| 29 | std::vector<int16_t> out(480, 0); |
| 30 | AudioFrame in; |
Tommi | 5d3e680 | 2024-05-24 14:43:55 | [diff] [blame] | 31 | InterleavedView<int16_t> const in_data = in.mutable_data(480, 2); |
| 32 | for (size_t k = 0; k < in_data.samples_per_channel(); ++k) { |
Per Åhgren | 4dd56a3 | 2019-11-19 20:00:59 | [diff] [blame] | 33 | in_data[2 * k] = 2; |
| 34 | in_data[2 * k + 1] = 0; |
| 35 | } |
| 36 | |
| 37 | DownMixFrame(in, out); |
| 38 | |
| 39 | EXPECT_THAT(out, AllOf(SizeIs(480), Each(1))); |
| 40 | } |
| 41 | |
| 42 | TEST(AcmRemixing, DownMixMutedFrame) { |
| 43 | std::vector<int16_t> out(480, 0); |
| 44 | AudioFrame in; |
| 45 | in.num_channels_ = 2; |
| 46 | in.samples_per_channel_ = 480; |
| 47 | |
| 48 | int16_t* const in_data = in.mutable_data(); |
| 49 | for (size_t k = 0; k < in.samples_per_channel_; ++k) { |
| 50 | in_data[2 * k] = 2; |
| 51 | in_data[2 * k + 1] = 0; |
| 52 | } |
| 53 | |
| 54 | in.Mute(); |
| 55 | |
| 56 | DownMixFrame(in, out); |
| 57 | |
| 58 | EXPECT_THAT(out, AllOf(SizeIs(480), Each(0))); |
| 59 | } |
| 60 | |
| 61 | TEST(AcmRemixing, RemixMutedStereoFrameTo6Channels) { |
| 62 | std::vector<int16_t> out(480, 0); |
| 63 | AudioFrame in; |
| 64 | in.num_channels_ = 2; |
| 65 | in.samples_per_channel_ = 480; |
| 66 | |
| 67 | int16_t* const in_data = in.mutable_data(); |
| 68 | for (size_t k = 0; k < in.samples_per_channel_; ++k) { |
| 69 | in_data[2 * k] = 1; |
| 70 | in_data[2 * k + 1] = 2; |
| 71 | } |
| 72 | in.Mute(); |
| 73 | |
| 74 | ReMixFrame(in, 6, &out); |
| 75 | EXPECT_EQ(6 * 480u, out.size()); |
| 76 | |
| 77 | EXPECT_THAT(out, AllOf(SizeIs(in.samples_per_channel_ * 6), Each(0))); |
| 78 | } |
| 79 | |
| 80 | TEST(AcmRemixing, RemixStereoFrameTo6Channels) { |
| 81 | std::vector<int16_t> out(480, 0); |
| 82 | AudioFrame in; |
| 83 | in.num_channels_ = 2; |
| 84 | in.samples_per_channel_ = 480; |
| 85 | |
| 86 | int16_t* const in_data = in.mutable_data(); |
| 87 | for (size_t k = 0; k < in.samples_per_channel_; ++k) { |
| 88 | in_data[2 * k] = 1; |
| 89 | in_data[2 * k + 1] = 2; |
| 90 | } |
| 91 | |
| 92 | ReMixFrame(in, 6, &out); |
| 93 | EXPECT_EQ(6 * 480u, out.size()); |
| 94 | |
| 95 | std::vector<int16_t> expected_output(in.samples_per_channel_ * 6); |
| 96 | for (size_t k = 0; k < in.samples_per_channel_; ++k) { |
| 97 | expected_output[6 * k] = 1; |
| 98 | expected_output[6 * k + 1] = 2; |
| 99 | } |
| 100 | |
| 101 | EXPECT_THAT(out, ElementsAreArray(expected_output)); |
| 102 | } |
| 103 | |
| 104 | TEST(AcmRemixing, RemixMonoFrameTo6Channels) { |
| 105 | std::vector<int16_t> out(480, 0); |
| 106 | AudioFrame in; |
| 107 | in.num_channels_ = 1; |
| 108 | in.samples_per_channel_ = 480; |
| 109 | |
| 110 | int16_t* const in_data = in.mutable_data(); |
| 111 | for (size_t k = 0; k < in.samples_per_channel_; ++k) { |
| 112 | in_data[k] = 1; |
| 113 | } |
| 114 | |
| 115 | ReMixFrame(in, 6, &out); |
| 116 | EXPECT_EQ(6 * 480u, out.size()); |
| 117 | |
| 118 | std::vector<int16_t> expected_output(in.samples_per_channel_ * 6, 0); |
| 119 | for (size_t k = 0; k < in.samples_per_channel_; ++k) { |
| 120 | expected_output[6 * k] = 1; |
| 121 | expected_output[6 * k + 1] = 1; |
| 122 | } |
| 123 | |
| 124 | EXPECT_THAT(out, ElementsAreArray(expected_output)); |
| 125 | } |
| 126 | |
| 127 | TEST(AcmRemixing, RemixStereoFrameToMono) { |
| 128 | std::vector<int16_t> out(480, 0); |
| 129 | AudioFrame in; |
| 130 | in.num_channels_ = 2; |
| 131 | in.samples_per_channel_ = 480; |
| 132 | |
| 133 | int16_t* const in_data = in.mutable_data(); |
| 134 | for (size_t k = 0; k < in.samples_per_channel_; ++k) { |
| 135 | in_data[2 * k] = 2; |
| 136 | in_data[2 * k + 1] = 0; |
| 137 | } |
| 138 | |
| 139 | ReMixFrame(in, 1, &out); |
| 140 | EXPECT_EQ(480u, out.size()); |
| 141 | |
| 142 | EXPECT_THAT(out, AllOf(SizeIs(in.samples_per_channel_), Each(1))); |
| 143 | } |
| 144 | |
| 145 | TEST(AcmRemixing, RemixMonoFrameToStereo) { |
| 146 | std::vector<int16_t> out(480, 0); |
| 147 | AudioFrame in; |
| 148 | in.num_channels_ = 1; |
| 149 | in.samples_per_channel_ = 480; |
| 150 | |
| 151 | int16_t* const in_data = in.mutable_data(); |
| 152 | for (size_t k = 0; k < in.samples_per_channel_; ++k) { |
| 153 | in_data[k] = 1; |
| 154 | } |
| 155 | |
| 156 | ReMixFrame(in, 2, &out); |
| 157 | EXPECT_EQ(960u, out.size()); |
| 158 | |
| 159 | EXPECT_THAT(out, AllOf(SizeIs(2 * in.samples_per_channel_), Each(1))); |
| 160 | } |
| 161 | |
| 162 | TEST(AcmRemixing, Remix3ChannelFrameToStereo) { |
| 163 | std::vector<int16_t> out(480, 0); |
| 164 | AudioFrame in; |
| 165 | in.num_channels_ = 3; |
| 166 | in.samples_per_channel_ = 480; |
| 167 | |
| 168 | int16_t* const in_data = in.mutable_data(); |
| 169 | for (size_t k = 0; k < in.samples_per_channel_; ++k) { |
| 170 | for (size_t j = 0; j < 3; ++j) { |
| 171 | in_data[3 * k + j] = j; |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | ReMixFrame(in, 2, &out); |
| 176 | EXPECT_EQ(2 * 480u, out.size()); |
| 177 | |
| 178 | std::vector<int16_t> expected_output(in.samples_per_channel_ * 2); |
| 179 | for (size_t k = 0; k < in.samples_per_channel_; ++k) { |
| 180 | for (size_t j = 0; j < 2; ++j) { |
| 181 | expected_output[2 * k + j] = static_cast<int>(j); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | EXPECT_THAT(out, ElementsAreArray(expected_output)); |
| 186 | } |
| 187 | |
| 188 | } // namespace webrtc |