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| 1 /* |
| 2 * Copyright (c) 2017 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 <algorithm> |
| 12 #include <array> |
| 13 |
| 14 #include "webrtc/common_audio/wav_file.h" |
| 15 #include "webrtc/common_audio/wav_header.h" |
| 16 #include "webrtc/test/fake_audio_device.h" |
| 17 #include "webrtc/test/gtest.h" |
| 18 #include "webrtc/test/testsupport/fileutils.h" |
| 19 |
| 20 namespace webrtc { |
| 21 namespace test { |
| 22 |
| 23 namespace { |
| 24 void RunTest(const std::vector<int16_t>& input_samples, |
| 25 const std::vector<int16_t>& expected_samples, |
| 26 size_t samples_per_frame) { |
| 27 const ::testing::TestInfo* const test_info = |
| 28 ::testing::UnitTest::GetInstance()->current_test_info(); |
| 29 |
| 30 const std::string output_filename = test::OutputPath() + |
| 31 "BoundedWavFileWriterTest_" + test_info->name() + ".wav"; |
| 32 |
| 33 static const size_t kSamplesPerFrame = 8; |
| 34 static const int kSampleRate = kSamplesPerFrame * 100; |
| 35 EXPECT_EQ(FakeAudioDevice::SamplesPerFrame(kSampleRate), kSamplesPerFrame); |
| 36 |
| 37 { |
| 38 std::unique_ptr<FakeAudioDevice::Renderer> writer = |
| 39 FakeAudioDevice::CreateBoundedWavFileWriter(output_filename, 800); |
| 40 |
| 41 for (size_t i = 0; i < input_samples.size(); i += kSamplesPerFrame) { |
| 42 EXPECT_TRUE(writer->Render(rtc::ArrayView<const int16_t>( |
| 43 &input_samples[i], |
| 44 std::min(kSamplesPerFrame, input_samples.size() - i)))); |
| 45 } |
| 46 } |
| 47 |
| 48 { |
| 49 WavReader reader(output_filename); |
| 50 std::vector<int16_t> read_samples(expected_samples.size()); |
| 51 EXPECT_EQ(expected_samples.size(), |
| 52 reader.ReadSamples(read_samples.size(), read_samples.data())); |
| 53 EXPECT_EQ(expected_samples, read_samples); |
| 54 |
| 55 EXPECT_EQ(0u, reader.ReadSamples(read_samples.size(), read_samples.data())); |
| 56 } |
| 57 |
| 58 remove(output_filename.c_str()); |
| 59 } |
| 60 } // namespace |
| 61 |
| 62 TEST(BoundedWavFileWriterTest, NoSilence) { |
| 63 static const std::vector<int16_t> kInputSamples = { |
| 64 75, 1234, 243, -1231, -22222, 0, 3, 88, |
| 65 1222, -1213, -13222, -7, -3525, 5787, -25247, 8 |
| 66 }; |
| 67 static const std::vector<int16_t> kExpectedSamples = kInputSamples; |
| 68 RunTest(kInputSamples, kExpectedSamples, 8); |
| 69 } |
| 70 |
| 71 TEST(BoundedWavFileWriterTest, SomeStartSilence) { |
| 72 static const std::vector<int16_t> kInputSamples = { |
| 73 0, 0, 0, 0, 3, 0, 0, 0, |
| 74 0, 3, -13222, -7, -3525, 5787, -25247, 8 |
| 75 }; |
| 76 static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin() + 10, |
| 77 kInputSamples.end()); |
| 78 RunTest(kInputSamples, kExpectedSamples, 8); |
| 79 } |
| 80 |
| 81 TEST(BoundedWavFileWriterTest, NegativeStartSilence) { |
| 82 static const std::vector<int16_t> kInputSamples = { |
| 83 0, -4, -6, 0, 3, 0, 0, 0, |
| 84 0, 3, -13222, -7, -3525, 5787, -25247, 8 |
| 85 }; |
| 86 static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin() + 2, |
| 87 kInputSamples.end()); |
| 88 RunTest(kInputSamples, kExpectedSamples, 8); |
| 89 } |
| 90 |
| 91 TEST(BoundedWavFileWriterTest, SomeEndSilence) { |
| 92 static const std::vector<int16_t> kInputSamples = { |
| 93 75, 1234, 243, -1231, -22222, 0, 1, 0, |
| 94 0, 0, 0, 0, 0, 0, 0, 0 |
| 95 }; |
| 96 static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin(), |
| 97 kInputSamples.end() - 9); |
| 98 RunTest(kInputSamples, kExpectedSamples, 8); |
| 99 } |
| 100 |
| 101 TEST(BoundedWavFileWriterTest, DoubleEndSilence) { |
| 102 static const std::vector<int16_t> kInputSamples = { |
| 103 75, 1234, 243, -1231, -22222, 0, 0, 0, |
| 104 0, -1213, -13222, -7, -3525, 5787, 0, 0 |
| 105 }; |
| 106 static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin(), |
| 107 kInputSamples.end() - 2); |
| 108 RunTest(kInputSamples, kExpectedSamples, 8); |
| 109 } |
| 110 |
| 111 TEST(BoundedWavFileWriterTest, DoubleSilence) { |
| 112 static const std::vector<int16_t> kInputSamples = { |
| 113 0, -1213, -13222, -7, -3525, 5787, 0, 0 |
| 114 }; |
| 115 static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin() + 1, |
| 116 kInputSamples.end() - 2); |
| 117 RunTest(kInputSamples, kExpectedSamples, 8); |
| 118 } |
| 119 |
| 120 TEST(BoundedWavFileWriterTest, EndSilenceCutoff) { |
| 121 static const std::vector<int16_t> kInputSamples = { |
| 122 75, 1234, 243, -1231, -22222, 0, 1, 0, |
| 123 0, 0, 0 |
| 124 }; |
| 125 static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin(), |
| 126 kInputSamples.end() - 4); |
| 127 RunTest(kInputSamples, kExpectedSamples, 8); |
| 128 } |
| 129 |
| 130 } // namespace test |
| 131 } // namespace webrtc |
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