| // 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 "services/audio/service.h" |
| |
| #include <utility> |
| |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/single_thread_task_runner.h" |
| #include "base/system_monitor/system_monitor.h" |
| #include "base/time/default_tick_clock.h" |
| #include "base/trace_event/trace_event.h" |
| #include "media/audio/audio_manager.h" |
| #include "services/audio/debug_recording.h" |
| #include "services/audio/device_notifier.h" |
| #include "services/audio/log_factory_manager.h" |
| #include "services/audio/service_metrics.h" |
| #include "services/audio/system_info.h" |
| #include "services/service_manager/public/cpp/service_context.h" |
| #include "services/service_manager/public/cpp/service_context_ref.h" |
| |
| #if defined(OS_MACOSX) |
| #include "media/audio/mac/audio_device_listener_mac.h" |
| #endif |
| |
| namespace audio { |
| |
| Service::Service(std::unique_ptr<AudioManagerAccessor> audio_manager_accessor, |
| base::TimeDelta quit_timeout, |
| bool enable_remote_client_support, |
| std::unique_ptr<service_manager::BinderRegistry> registry) |
| : quit_timeout_(quit_timeout), |
| audio_manager_accessor_(std::move(audio_manager_accessor)), |
| enable_remote_client_support_(enable_remote_client_support), |
| registry_(std::move(registry)) { |
| DCHECK(audio_manager_accessor_); |
| if (enable_remote_client_support_) { |
| log_factory_manager_ = std::make_unique<LogFactoryManager>(); |
| audio_manager_accessor_->SetAudioLogFactory( |
| log_factory_manager_->GetLogFactory()); |
| } else { |
| // Start device monitoring explicitly if no mojo device notifier will be |
| // created. This is required for in-process device notifications. |
| InitializeDeviceMonitor(); |
| } |
| } |
| |
| Service::~Service() { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| TRACE_EVENT0("audio", "audio::Service::~Service"); |
| |
| metrics_.reset(); |
| |
| // |ref_factory_| may reentrantly call its |quit_closure| when we reset the |
| // members below. Destroy it ahead of time to prevent this. |
| ref_factory_.reset(); |
| |
| // Stop all streams cleanly before shutting down the audio manager. |
| stream_factory_.reset(); |
| |
| // Reset |debug_recording_| to disable debug recording before AudioManager |
| // shutdown. |
| debug_recording_.reset(); |
| |
| audio_manager_accessor_->Shutdown(); |
| } |
| |
| void Service::OnStart() { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| TRACE_EVENT0("audio", "audio::Service::OnStart") |
| |
| // This will pre-create AudioManager if AudioManagerAccessor owns it. |
| CHECK(audio_manager_accessor_->GetAudioManager()); |
| |
| metrics_ = |
| std::make_unique<ServiceMetrics>(base::DefaultTickClock::GetInstance()); |
| ref_factory_ = std::make_unique<service_manager::ServiceContextRefFactory>( |
| base::BindRepeating(&Service::MaybeRequestQuitDelayed, |
| base::Unretained(this))); |
| registry_->AddInterface<mojom::SystemInfo>(base::BindRepeating( |
| &Service::BindSystemInfoRequest, base::Unretained(this))); |
| registry_->AddInterface<mojom::DebugRecording>(base::BindRepeating( |
| &Service::BindDebugRecordingRequest, base::Unretained(this))); |
| registry_->AddInterface<mojom::StreamFactory>(base::BindRepeating( |
| &Service::BindStreamFactoryRequest, base::Unretained(this))); |
| if (enable_remote_client_support_) { |
| registry_->AddInterface<mojom::DeviceNotifier>(base::BindRepeating( |
| &Service::BindDeviceNotifierRequest, base::Unretained(this))); |
| registry_->AddInterface<mojom::LogFactoryManager>(base::BindRepeating( |
| &Service::BindLogFactoryManagerRequest, base::Unretained(this))); |
| } |
| } |
| |
| void Service::OnBindInterface( |
| const service_manager::BindSourceInfo& source_info, |
| const std::string& interface_name, |
| mojo::ScopedMessagePipeHandle interface_pipe) { |
| DCHECK(ref_factory_); |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| TRACE_EVENT1("audio", "audio::Service::OnBindInterface", "interface", |
| interface_name); |
| |
| if (ref_factory_->HasNoRefs()) |
| metrics_->HasConnections(); |
| |
| registry_->BindInterface(interface_name, std::move(interface_pipe)); |
| DCHECK(!ref_factory_->HasNoRefs()); |
| quit_timer_.AbandonAndStop(); |
| } |
| |
| bool Service::OnServiceManagerConnectionLost() { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| return true; |
| } |
| |
| void Service::SetQuitClosureForTesting(base::RepeatingClosure quit_closure) { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| quit_closure_ = std::move(quit_closure); |
| } |
| |
| void Service::BindSystemInfoRequest(mojom::SystemInfoRequest request) { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| DCHECK(ref_factory_); |
| |
| if (!system_info_) { |
| system_info_ = std::make_unique<SystemInfo>( |
| audio_manager_accessor_->GetAudioManager()); |
| } |
| system_info_->Bind( |
| std::move(request), |
| TracedServiceRef(ref_factory_->CreateRef(), "audio::SystemInfo Binding")); |
| } |
| |
| void Service::BindDebugRecordingRequest(mojom::DebugRecordingRequest request) { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| DCHECK(ref_factory_); |
| TracedServiceRef service_ref(ref_factory_->CreateRef(), |
| "audio::DebugRecording Binding"); |
| |
| // Accept only one bind request at a time. Old request is overwritten. |
| // |debug_recording_| must be reset first to disable debug recording, and then |
| // create a new DebugRecording instance to enable debug recording. |
| debug_recording_.reset(); |
| debug_recording_ = std::make_unique<DebugRecording>( |
| std::move(request), audio_manager_accessor_->GetAudioManager(), |
| std::move(service_ref)); |
| } |
| |
| void Service::BindStreamFactoryRequest(mojom::StreamFactoryRequest request) { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| DCHECK(ref_factory_); |
| |
| if (!stream_factory_) |
| stream_factory_.emplace(audio_manager_accessor_->GetAudioManager()); |
| stream_factory_->Bind(std::move(request), |
| TracedServiceRef(ref_factory_->CreateRef(), |
| "audio::StreamFactory Binding")); |
| } |
| |
| void Service::BindDeviceNotifierRequest(mojom::DeviceNotifierRequest request) { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| DCHECK(ref_factory_); |
| DCHECK(enable_remote_client_support_); |
| |
| if (!system_monitor_) { |
| CHECK(!base::SystemMonitor::Get()); |
| system_monitor_ = std::make_unique<base::SystemMonitor>(); |
| } |
| InitializeDeviceMonitor(); |
| if (!device_notifier_) |
| device_notifier_ = std::make_unique<DeviceNotifier>(); |
| device_notifier_->Bind(std::move(request), |
| TracedServiceRef(ref_factory_->CreateRef(), |
| "audio::DeviceNotifier Binding")); |
| } |
| |
| void Service::BindLogFactoryManagerRequest( |
| mojom::LogFactoryManagerRequest request) { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| DCHECK(ref_factory_); |
| DCHECK(log_factory_manager_); |
| DCHECK(enable_remote_client_support_); |
| log_factory_manager_->Bind( |
| std::move(request), TracedServiceRef(ref_factory_->CreateRef(), |
| "audio::LogFactoryManager Binding")); |
| } |
| |
| void Service::MaybeRequestQuitDelayed() { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| metrics_->HasNoConnections(); |
| if (quit_timeout_ <= base::TimeDelta()) |
| return; |
| quit_timer_.Start(FROM_HERE, quit_timeout_, this, &Service::MaybeRequestQuit); |
| } |
| |
| void Service::MaybeRequestQuit() { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| DCHECK(ref_factory_ && ref_factory_->HasNoRefs() && |
| quit_timeout_ > base::TimeDelta()); |
| TRACE_EVENT0("audio", "audio::Service::MaybeRequestQuit"); |
| |
| context()->CreateQuitClosure().Run(); |
| if (!quit_closure_.is_null()) |
| quit_closure_.Run(); |
| } |
| |
| void Service::InitializeDeviceMonitor() { |
| #if defined(OS_MACOSX) |
| if (audio_device_listener_mac_) |
| return; |
| |
| TRACE_EVENT0("audio", "audio::Service::InitializeDeviceMonitor"); |
| |
| audio_device_listener_mac_ = std::make_unique<media::AudioDeviceListenerMac>( |
| base::BindRepeating([] { |
| if (base::SystemMonitor::Get()) { |
| base::SystemMonitor::Get()->ProcessDevicesChanged( |
| base::SystemMonitor::DEVTYPE_AUDIO); |
| } |
| }), |
| true /* monitor_default_input */, true /* monitor_addition_removal */, |
| true /* monitor_sources */); |
| #endif |
| } |
| |
| } // namespace audio |