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Unified Diff: webrtc/test/fake_audio_device_unittest.cc

Issue 2694203002: Low-bandwidth audio testing (Closed)
Patch Set: Rebase Created 3 years, 9 months ago
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Index: webrtc/test/fake_audio_device_unittest.cc
diff --git a/webrtc/test/fake_audio_device_unittest.cc b/webrtc/test/fake_audio_device_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d4f8acc8ac9d1087642c270001350dfa7366ec2d
--- /dev/null
+++ b/webrtc/test/fake_audio_device_unittest.cc
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <algorithm>
+#include <array>
+
+#include "webrtc/common_audio/wav_file.h"
+#include "webrtc/common_audio/wav_header.h"
+#include "webrtc/test/fake_audio_device.h"
+#include "webrtc/test/gtest.h"
+#include "webrtc/test/testsupport/fileutils.h"
+
+namespace webrtc {
+namespace test {
+
+namespace {
+void RunTest(const std::vector<int16_t>& input_samples,
+ const std::vector<int16_t>& expected_samples,
+ size_t samples_per_frame) {
+ const ::testing::TestInfo* const test_info =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+
+ const std::string output_filename = test::OutputPath() +
+ "BoundedWavFileWriterTest_" + test_info->name() + ".wav";
+
+ static const size_t kSamplesPerFrame = 8;
+ static const int kSampleRate = kSamplesPerFrame * 100;
+ EXPECT_EQ(FakeAudioDevice::SamplesPerFrame(kSampleRate), kSamplesPerFrame);
+
+ {
+ std::unique_ptr<FakeAudioDevice::Renderer> writer =
+ FakeAudioDevice::CreateBoundedWavFileWriter(output_filename, 800);
+
+ for (size_t i = 0; i < input_samples.size(); i += kSamplesPerFrame) {
+ EXPECT_TRUE(writer->Render(rtc::ArrayView<const int16_t>(
+ &input_samples[i],
+ std::min(kSamplesPerFrame, input_samples.size() - i))));
+ }
+ }
+
+ {
+ WavReader reader(output_filename);
+ std::vector<int16_t> read_samples(expected_samples.size());
+ EXPECT_EQ(expected_samples.size(),
+ reader.ReadSamples(read_samples.size(), read_samples.data()));
+ EXPECT_EQ(expected_samples, read_samples);
+
+ EXPECT_EQ(0u, reader.ReadSamples(read_samples.size(), read_samples.data()));
+ }
+
+ remove(output_filename.c_str());
+}
+} // namespace
+
+TEST(BoundedWavFileWriterTest, NoSilence) {
+ static const std::vector<int16_t> kInputSamples = {
+ 75, 1234, 243, -1231, -22222, 0, 3, 88,
+ 1222, -1213, -13222, -7, -3525, 5787, -25247, 8
+ };
+ static const std::vector<int16_t> kExpectedSamples = kInputSamples;
+ RunTest(kInputSamples, kExpectedSamples, 8);
+}
+
+TEST(BoundedWavFileWriterTest, SomeStartSilence) {
+ static const std::vector<int16_t> kInputSamples = {
+ 0, 0, 0, 0, 3, 0, 0, 0,
+ 0, 3, -13222, -7, -3525, 5787, -25247, 8
+ };
+ static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin() + 10,
+ kInputSamples.end());
+ RunTest(kInputSamples, kExpectedSamples, 8);
+}
+
+TEST(BoundedWavFileWriterTest, NegativeStartSilence) {
+ static const std::vector<int16_t> kInputSamples = {
+ 0, -4, -6, 0, 3, 0, 0, 0,
+ 0, 3, -13222, -7, -3525, 5787, -25247, 8
+ };
+ static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin() + 2,
+ kInputSamples.end());
+ RunTest(kInputSamples, kExpectedSamples, 8);
+}
+
+TEST(BoundedWavFileWriterTest, SomeEndSilence) {
+ static const std::vector<int16_t> kInputSamples = {
+ 75, 1234, 243, -1231, -22222, 0, 1, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0
+ };
+ static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin(),
+ kInputSamples.end() - 9);
+ RunTest(kInputSamples, kExpectedSamples, 8);
+}
+
+TEST(BoundedWavFileWriterTest, DoubleEndSilence) {
+ static const std::vector<int16_t> kInputSamples = {
+ 75, 1234, 243, -1231, -22222, 0, 0, 0,
+ 0, -1213, -13222, -7, -3525, 5787, 0, 0
+ };
+ static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin(),
+ kInputSamples.end() - 2);
+ RunTest(kInputSamples, kExpectedSamples, 8);
+}
+
+TEST(BoundedWavFileWriterTest, DoubleSilence) {
+ static const std::vector<int16_t> kInputSamples = {
+ 0, -1213, -13222, -7, -3525, 5787, 0, 0
+ };
+ static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin() + 1,
+ kInputSamples.end() - 2);
+ RunTest(kInputSamples, kExpectedSamples, 8);
+}
+
+TEST(BoundedWavFileWriterTest, EndSilenceCutoff) {
+ static const std::vector<int16_t> kInputSamples = {
+ 75, 1234, 243, -1231, -22222, 0, 1, 0,
+ 0, 0, 0
+ };
+ static const std::vector<int16_t> kExpectedSamples(kInputSamples.begin(),
+ kInputSamples.end() - 4);
+ RunTest(kInputSamples, kExpectedSamples, 8);
+}
+
+} // namespace test
+} // namespace webrtc
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