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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/media_effects/test/fake_audio_system_info.h"
#include <optional>
#include <utility>
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/system/system_monitor.h"
#include "media/base/audio_parameters.h"
namespace media_effects {
FakeAudioSystemInfo::FakeAudioSystemInfo() = default;
FakeAudioSystemInfo::~FakeAudioSystemInfo() = default;
void FakeAudioSystemInfo::Bind(
mojo::PendingReceiver<audio::mojom::SystemInfo> receiver) {
receivers_.Add(this, std::move(receiver));
}
void FakeAudioSystemInfo::AddFakeInputDevice(
const media::AudioDeviceDescription& descriptor) {
input_device_descriptions_.emplace(descriptor.unique_id, descriptor);
NotifyDevicesChanged();
}
void FakeAudioSystemInfo::RemoveFakeInputDevice(const std::string& device_id) {
input_device_descriptions_.erase(device_id);
NotifyDevicesChanged();
}
void FakeAudioSystemInfo::GetInputStreamParameters(
const std::string& device_id,
GetInputStreamParametersCallback callback) {
if (input_device_descriptions_.find(device_id) ==
input_device_descriptions_.end()) {
std::move(callback).Run(std::nullopt);
return;
}
on_get_input_stream_params_callback_.Run(device_id);
std::move(callback).Run(GetAudioParameters());
}
void FakeAudioSystemInfo::HasInputDevices(HasInputDevicesCallback callback) {
std::move(callback).Run(input_device_descriptions_.size());
}
void FakeAudioSystemInfo::GetInputDeviceDescriptions(
GetInputDeviceDescriptionsCallback callback) {
std::vector<media::AudioDeviceDescription> devices;
for (const auto& [_, device_info] : input_device_descriptions_) {
devices.emplace_back(device_info);
}
// Simulate the asynchronously behavior of the actual SystemInfo
// which does a lot of asynchronous and mojo calls.
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTaskAndReply(
FROM_HERE, base::BindOnce(std::move(callback), devices),
std::exchange(on_replied_with_input_device_descriptions_,
base::DoNothing()));
}
void FakeAudioSystemInfo::NotifyDevicesChanged() {
base::SystemMonitor::Get()->ProcessDevicesChanged(
base::SystemMonitor::DeviceType::DEVTYPE_AUDIO);
}
// static
media::AudioParameters FakeAudioSystemInfo::GetAudioParameters() {
// Some arbitrary values, as to guarantee `params`to be valid.
media::AudioParameters params(media::AudioParameters::AUDIO_PCM_LOW_LATENCY,
media::ChannelLayoutConfig::Mono(),
/*sample_rate=*/3300, /*frames_per_buffer=*/40);
CHECK(params.IsValid());
return params;
}
} // namespace media_effects
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