blob: bdb1285e85d6824fb73bff02cbfcb75f50c28f83 [file] [log] [blame]
/*
* 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 "api/array_view.h"
#include "common_audio/wav_file.h"
#include "common_audio/wav_header.h"
#include "modules/audio_device/include/test_audio_device.h"
#include "rtc_base/logging.h"
#include "test/gmock.h"
#include "test/gtest.h"
#include "test/testsupport/fileutils.h"
namespace webrtc {
namespace {
void RunTestViaRtcPlatformFileAPI(
rtc::ArrayView<const int16_t> input_samples,
rtc::ArrayView<const 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() +
"_" + std::to_string(std::rand()) + ".wav";
static const size_t kSamplesPerFrame = 8;
static const int kSampleRate = kSamplesPerFrame * 100;
EXPECT_EQ(TestAudioDeviceModule::SamplesPerFrame(kSampleRate),
kSamplesPerFrame);
// Test through rtc::PlatformFile API.
{
auto file = rtc::CreatePlatformFile(output_filename);
std::unique_ptr<TestAudioDeviceModule::Renderer> writer =
TestAudioDeviceModule::CreateBoundedWavFileWriter(file, 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))));
}
}
{
auto file = rtc::OpenPlatformFile(output_filename);
WavReader reader(file);
std::vector<int16_t> read_samples(expected_samples.size());
EXPECT_EQ(expected_samples.size(),
reader.ReadSamples(read_samples.size(), read_samples.data()));
EXPECT_THAT(expected_samples, testing::ElementsAreArray(read_samples));
EXPECT_EQ(0u, reader.ReadSamples(read_samples.size(), read_samples.data()));
}
remove(output_filename.c_str());
}
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() +
"_" + std::to_string(std::rand()) + ".wav";
static const size_t kSamplesPerFrame = 8;
static const int kSampleRate = kSamplesPerFrame * 100;
EXPECT_EQ(TestAudioDeviceModule::SamplesPerFrame(kSampleRate),
kSamplesPerFrame);
// Test through file name API.
{
std::unique_ptr<TestAudioDeviceModule::Renderer> writer =
TestAudioDeviceModule::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, SomeStartSilenceRtcFile) {
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());
RunTestViaRtcPlatformFileAPI(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);
}
TEST(PulsedNoiseCapturerTest, SetMaxAmplitude) {
const int16_t kAmplitude = 50;
std::unique_ptr<TestAudioDeviceModule::PulsedNoiseCapturer> capturer =
TestAudioDeviceModule::CreatePulsedNoiseCapturer(
kAmplitude, /*sampling_frequency_in_hz=*/8000);
rtc::BufferT<int16_t> recording_buffer;
// Verify that the capturer doesn't create entries louder than than
// kAmplitude. Since the pulse generator alternates between writing
// zeroes and actual entries, we need to do the capturing twice.
capturer->Capture(&recording_buffer);
capturer->Capture(&recording_buffer);
int16_t max_sample =
*std::max_element(recording_buffer.begin(), recording_buffer.end());
EXPECT_LE(max_sample, kAmplitude);
// Increase the amplitude and verify that the samples can now be louder
// than the previous max.
capturer->SetMaxAmplitude(kAmplitude * 2);
capturer->Capture(&recording_buffer);
capturer->Capture(&recording_buffer);
max_sample =
*std::max_element(recording_buffer.begin(), recording_buffer.end());
EXPECT_GT(max_sample, kAmplitude);
}
} // namespace webrtc