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// Copyright 2022 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/audio/fuchsia/audio_input_stream_fuchsia.h"
#include <fuchsia/media/cpp/fidl_test_base.h>
#include <lib/fidl/cpp/binding.h>
#include "base/fuchsia/fuchsia_logging.h"
#include "base/fuchsia/test_component_context_for_process.h"
#include "base/test/task_environment.h"
#include "media/audio/audio_device_description.h"
#include "media/base/channel_layout.h"
#include "media/fuchsia/audio/fake_audio_capturer.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
namespace {
constexpr size_t kFramesPerPacket = 480;
class TestCaptureCallback final : public AudioInputStream::AudioInputCallback {
public:
TestCaptureCallback() = default;
~TestCaptureCallback() override = default;
TestCaptureCallback(const TestCaptureCallback&) = delete;
TestCaptureCallback& operator=(const TestCaptureCallback&) = delete;
bool have_error() const { return have_error_; }
const std::vector<std::unique_ptr<AudioBus>>& packets() const {
return packets_;
}
// AudioCapturerSource::CaptureCallback implementation.
void OnData(const AudioBus* source,
base::TimeTicks capture_time,
double volume) override {
auto bus = AudioBus::Create(source->channels(), source->frames());
source->CopyTo(bus.get());
packets_.push_back(std::move(bus));
}
void OnError() override {
EXPECT_FALSE(have_error_);
have_error_ = true;
}
private:
std::vector<std::unique_ptr<AudioBus>> packets_;
bool have_error_ = false;
};
} // namespace
class AudioInputStreamFuchsiaTest : public testing::Test {
public:
AudioInputStreamFuchsiaTest() {}
~AudioInputStreamFuchsiaTest() override {
if (input_stream_) {
input_stream_->Stop();
input_stream_.reset();
}
base::RunLoop().RunUntilIdle();
}
void InitializeCapturer(ChannelLayout layout) {
base::TestComponentContextForProcess test_context;
FakeAudioCapturerFactory audio_capturer_factory(
test_context.additional_services());
input_stream_ = std::make_unique<AudioInputStreamFuchsia>(
/*manager=*/nullptr,
AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, layout,
/*sample_rate=*/48000, kFramesPerPacket),
AudioDeviceDescription::kDefaultDeviceId);
AudioInputStream::OpenOutcome result = input_stream_->Open();
EXPECT_EQ(result, AudioInputStream::OpenOutcome::kSuccess);
base::RunLoop().RunUntilIdle();
test_capturer_ = audio_capturer_factory.TakeCapturer();
ASSERT_TRUE(test_capturer_);
test_capturer_->SetDataGeneration(
FakeAudioCapturer::DataGeneration::MANUAL);
// Verify no other capturers were created.
ASSERT_FALSE(audio_capturer_factory.TakeCapturer());
}
void TestCapture(ChannelLayout layout) {
InitializeCapturer(layout);
input_stream_->Start(&callback_);
base::RunLoop().RunUntilIdle();
size_t num_channels = ChannelLayoutToChannelCount(layout);
// Produce a packet.
std::vector<float> samples(kFramesPerPacket * num_channels);
for (size_t i = 0; i < samples.size(); ++i) {
samples[i] = i;
}
base::TimeTicks ts = base::TimeTicks::FromZxTime(100);
test_capturer_->SendData(ts, samples.data());
base::RunLoop().RunUntilIdle();
// Verify that the packet was received.
ASSERT_EQ(callback_.packets().size(), 1U);
ASSERT_EQ(callback_.packets()[0]->frames(),
static_cast<int>(kFramesPerPacket));
for (size_t i = 0; i < samples.size(); ++i) {
EXPECT_EQ(samples[i], callback_.packets()[0]->channel(
i % num_channels)[i / num_channels]);
}
}
protected:
base::test::SingleThreadTaskEnvironment task_environment_{
base::test::SingleThreadTaskEnvironment::MainThreadType::IO};
std::unique_ptr<FakeAudioCapturer> test_capturer_;
TestCaptureCallback callback_;
std::unique_ptr<AudioInputStreamFuchsia> input_stream_;
};
TEST_F(AudioInputStreamFuchsiaTest, CreateAndDestroy) {}
TEST_F(AudioInputStreamFuchsiaTest, InitializeAndDestroy) {
InitializeCapturer(CHANNEL_LAYOUT_MONO);
}
TEST_F(AudioInputStreamFuchsiaTest, InitializeAndStart) {
const auto kLayout = CHANNEL_LAYOUT_MONO;
const auto kNumChannels = ChannelLayoutToChannelCount(kLayout);
InitializeCapturer(kLayout);
input_stream_->Start(&callback_);
base::RunLoop().RunUntilIdle();
EXPECT_TRUE(test_capturer_->is_active());
EXPECT_EQ(test_capturer_->GetPacketSize(),
sizeof(float) * kFramesPerPacket * kNumChannels);
EXPECT_TRUE(callback_.packets().empty());
}
TEST_F(AudioInputStreamFuchsiaTest, InitializeStereo) {
const auto kLayout = CHANNEL_LAYOUT_STEREO;
const auto kNumChannels = ChannelLayoutToChannelCount(kLayout);
InitializeCapturer(kLayout);
input_stream_->Start(&callback_);
base::RunLoop().RunUntilIdle();
EXPECT_TRUE(test_capturer_->is_active());
EXPECT_EQ(test_capturer_->GetPacketSize(),
sizeof(float) * kNumChannels * kFramesPerPacket);
}
TEST_F(AudioInputStreamFuchsiaTest, StartAndStop) {
InitializeCapturer(CHANNEL_LAYOUT_MONO);
input_stream_->Start(&callback_);
base::RunLoop().RunUntilIdle();
EXPECT_TRUE(test_capturer_->is_active());
input_stream_->Stop();
base::RunLoop().RunUntilIdle();
}
TEST_F(AudioInputStreamFuchsiaTest, CaptureMono) {
TestCapture(CHANNEL_LAYOUT_MONO);
}
TEST_F(AudioInputStreamFuchsiaTest, CaptureStereo) {
TestCapture(CHANNEL_LAYOUT_STEREO);
}
TEST_F(AudioInputStreamFuchsiaTest, CaptureTwoPackets) {
InitializeCapturer(CHANNEL_LAYOUT_MONO);
input_stream_->Start(&callback_);
base::RunLoop().RunUntilIdle();
// Produce two packets.
std::vector<float> samples1(kFramesPerPacket);
std::vector<float> samples2(kFramesPerPacket);
for (size_t i = 0; i < kFramesPerPacket; ++i) {
samples1[i] = i;
samples2[i] = i + 0.2;
}
base::TimeTicks ts = base::TimeTicks::FromZxTime(100);
test_capturer_->SendData(ts, samples1.data());
test_capturer_->SendData(ts + base::Milliseconds(10), samples2.data());
base::RunLoop().RunUntilIdle();
// Verify that both packets were received.
ASSERT_EQ(callback_.packets().size(), 2U);
ASSERT_EQ(callback_.packets()[0]->frames(),
static_cast<int>(kFramesPerPacket));
ASSERT_EQ(callback_.packets()[1]->frames(),
static_cast<int>(kFramesPerPacket));
for (size_t i = 0; i < kFramesPerPacket; ++i) {
EXPECT_EQ(samples1[i], callback_.packets()[0]->channel(0)[i]);
EXPECT_EQ(samples2[i], callback_.packets()[1]->channel(0)[i]);
}
}
TEST_F(AudioInputStreamFuchsiaTest, CaptureAfterStop) {
InitializeCapturer(CHANNEL_LAYOUT_MONO);
input_stream_->Start(&callback_);
base::RunLoop().RunUntilIdle();
input_stream_->Stop();
std::vector<float> samples(kFramesPerPacket);
base::TimeTicks ts = base::TimeTicks::FromZxTime(100);
test_capturer_->SendData(ts, samples.data());
base::RunLoop().RunUntilIdle();
// Packets produced after Stop() should not be passed to the callback.
ASSERT_EQ(callback_.packets().size(), 0U);
}
} // namespace media
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