| // Copyright 2017 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/audio_system_impl.h" |
| |
| #include "base/memory/ptr_util.h" |
| #include "base/single_thread_task_runner.h" |
| #include "base/task_runner_util.h" |
| #include "media/audio/audio_device_description.h" |
| #include "media/audio/audio_manager.h" |
| #include "media/base/bind_to_current_loop.h" |
| |
| // Using base::Unretained for |audio_manager_| is safe since it is deleted after |
| // its task runner, and AudioSystemImpl is deleted on the UI thread after the IO |
| // thread has been stopped and before |audio_manager_| deletion is scheduled. |
| namespace media { |
| |
| namespace { |
| |
| AudioParameters GetInputParametersOnDeviceThread(AudioManager* audio_manager, |
| const std::string& device_id) { |
| DCHECK(audio_manager->GetTaskRunner()->BelongsToCurrentThread()); |
| |
| // TODO(olka): remove this when AudioManager::GetInputStreamParameters() |
| // returns invalid parameters if the device is not found. |
| if (!audio_manager->HasAudioInputDevices()) |
| return AudioParameters(); |
| |
| return audio_manager->GetInputStreamParameters(device_id); |
| } |
| |
| AudioParameters GetOutputParametersOnDeviceThread( |
| AudioManager* audio_manager, |
| const std::string& device_id) { |
| DCHECK(audio_manager->GetTaskRunner()->BelongsToCurrentThread()); |
| |
| // TODO(olka): remove this when |
| // AudioManager::Get[Default]OutputStreamParameters() returns invalid |
| // parameters if the device is not found. |
| if (!audio_manager->HasAudioOutputDevices()) |
| return AudioParameters(); |
| |
| return media::AudioDeviceDescription::IsDefaultDevice(device_id) |
| ? audio_manager->GetDefaultOutputStreamParameters() |
| : audio_manager->GetOutputStreamParameters(device_id); |
| } |
| |
| AudioDeviceDescriptions GetDeviceDescriptionsOnDeviceThread( |
| AudioManager* audio_manager, |
| bool for_input) { |
| DCHECK(audio_manager->GetTaskRunner()->BelongsToCurrentThread()); |
| AudioDeviceDescriptions descriptions; |
| if (for_input) |
| audio_manager->GetAudioInputDeviceDescriptions(&descriptions); |
| else |
| audio_manager->GetAudioOutputDeviceDescriptions(&descriptions); |
| return descriptions; |
| } |
| |
| void GetInputDeviceInfoOnDeviceThread( |
| AudioManager* audio_manager, |
| const std::string& input_device_id, |
| AudioSystem::OnInputDeviceInfoCallback on_input_device_info_cb) { |
| DCHECK(audio_manager->GetTaskRunner()->BelongsToCurrentThread()); |
| const std::string associated_output_device_id = |
| audio_manager->GetAssociatedOutputDeviceID(input_device_id); |
| |
| on_input_device_info_cb.Run( |
| GetInputParametersOnDeviceThread(audio_manager, input_device_id), |
| associated_output_device_id.empty() |
| ? AudioParameters() |
| : GetOutputParametersOnDeviceThread(audio_manager, |
| associated_output_device_id), |
| associated_output_device_id); |
| } |
| |
| } // namespace |
| |
| AudioSystemImpl::AudioSystemImpl(AudioManager* audio_manager) |
| : audio_manager_(audio_manager) { |
| DCHECK(audio_manager_); |
| AudioSystem::SetInstance(this); |
| } |
| |
| AudioSystemImpl::~AudioSystemImpl() { |
| AudioSystem::ClearInstance(this); |
| } |
| |
| // static |
| std::unique_ptr<AudioSystem> AudioSystemImpl::Create( |
| AudioManager* audio_manager) { |
| return base::WrapUnique(new AudioSystemImpl(audio_manager)); |
| } |
| |
| void AudioSystemImpl::GetInputStreamParameters( |
| const std::string& device_id, |
| OnAudioParamsCallback on_params_cb) const { |
| if (GetTaskRunner()->BelongsToCurrentThread()) { |
| GetTaskRunner()->PostTask(FROM_HERE, |
| base::BindOnce(std::move(on_params_cb), |
| GetInputParametersOnDeviceThread( |
| audio_manager_, device_id))); |
| return; |
| } |
| base::PostTaskAndReplyWithResult( |
| GetTaskRunner(), FROM_HERE, |
| base::Bind(&GetInputParametersOnDeviceThread, |
| base::Unretained(audio_manager_), device_id), |
| std::move(on_params_cb)); |
| } |
| |
| void AudioSystemImpl::GetOutputStreamParameters( |
| const std::string& device_id, |
| OnAudioParamsCallback on_params_cb) const { |
| if (GetTaskRunner()->BelongsToCurrentThread()) { |
| GetTaskRunner()->PostTask(FROM_HERE, |
| base::BindOnce(std::move(on_params_cb), |
| GetOutputParametersOnDeviceThread( |
| audio_manager_, device_id))); |
| return; |
| } |
| base::PostTaskAndReplyWithResult( |
| GetTaskRunner(), FROM_HERE, |
| base::Bind(&GetOutputParametersOnDeviceThread, |
| base::Unretained(audio_manager_), device_id), |
| std::move(on_params_cb)); |
| } |
| |
| void AudioSystemImpl::HasInputDevices(OnBoolCallback on_has_devices_cb) const { |
| if (GetTaskRunner()->BelongsToCurrentThread()) { |
| GetTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(std::move(on_has_devices_cb), |
| audio_manager_->HasAudioInputDevices())); |
| return; |
| } |
| base::PostTaskAndReplyWithResult( |
| GetTaskRunner(), FROM_HERE, |
| base::Bind(&AudioManager::HasAudioInputDevices, |
| base::Unretained(audio_manager_)), |
| std::move(on_has_devices_cb)); |
| } |
| |
| void AudioSystemImpl::HasOutputDevices(OnBoolCallback on_has_devices_cb) const { |
| if (GetTaskRunner()->BelongsToCurrentThread()) { |
| GetTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(std::move(on_has_devices_cb), |
| audio_manager_->HasAudioOutputDevices())); |
| return; |
| } |
| base::PostTaskAndReplyWithResult( |
| GetTaskRunner(), FROM_HERE, |
| base::Bind(&AudioManager::HasAudioOutputDevices, |
| base::Unretained(audio_manager_)), |
| std::move(on_has_devices_cb)); |
| } |
| |
| void AudioSystemImpl::GetDeviceDescriptions( |
| OnDeviceDescriptionsCallback on_descriptions_cb, |
| bool for_input) { |
| if (GetTaskRunner()->BelongsToCurrentThread()) { |
| GetTaskRunner()->PostTask( |
| FROM_HERE, |
| base::BindOnce(std::move(on_descriptions_cb), |
| base::Passed(GetDeviceDescriptionsOnDeviceThread( |
| audio_manager_, for_input)))); |
| return; |
| } |
| |
| base::PostTaskAndReplyWithResult( |
| GetTaskRunner(), FROM_HERE, |
| base::Bind(&GetDeviceDescriptionsOnDeviceThread, |
| base::Unretained(audio_manager_), for_input), |
| std::move(on_descriptions_cb)); |
| } |
| |
| void AudioSystemImpl::GetAssociatedOutputDeviceID( |
| const std::string& input_device_id, |
| OnDeviceIdCallback on_device_id_cb) { |
| if (GetTaskRunner()->BelongsToCurrentThread()) { |
| GetTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(std::move(on_device_id_cb), |
| audio_manager_->GetAssociatedOutputDeviceID( |
| input_device_id))); |
| return; |
| } |
| base::PostTaskAndReplyWithResult( |
| GetTaskRunner(), FROM_HERE, |
| base::Bind(&AudioManager::GetAssociatedOutputDeviceID, |
| base::Unretained(audio_manager_), input_device_id), |
| std::move(on_device_id_cb)); |
| } |
| |
| void AudioSystemImpl::GetInputDeviceInfo( |
| const std::string& input_device_id, |
| OnInputDeviceInfoCallback on_input_device_info_cb) { |
| // No need to bind |on_input_device_info_cb| to the current loop if we are on |
| // the audio thread. However, the client still expect to receive the reply |
| // asynchronously, so we always post GetInputDeviceInfoOnDeviceThread(), which |
| // will syncronously call the (bound to current loop or not) callback. |
| GetTaskRunner()->PostTask( |
| FROM_HERE, |
| base::BindOnce( |
| &GetInputDeviceInfoOnDeviceThread, base::Unretained(audio_manager_), |
| input_device_id, |
| GetTaskRunner()->BelongsToCurrentThread() |
| ? std::move(on_input_device_info_cb) |
| : media::BindToCurrentLoop(std::move(on_input_device_info_cb)))); |
| } |
| |
| base::SingleThreadTaskRunner* AudioSystemImpl::GetTaskRunner() const { |
| return audio_manager_->GetTaskRunner(); |
| } |
| |
| } // namespace media |