| // Copyright 2013 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chromeos/ash/components/audio/cras_audio_handler.h" |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <algorithm> |
| #include <cmath> |
| #include <cstdint> |
| #include <set> |
| #include <utility> |
| #include <vector> |
| |
| #include "ash/constants/ash_features.h" |
| #include "base/functional/bind.h" |
| #include "base/functional/callback_helpers.h" |
| #include "base/logging.h" |
| #include "base/metrics/histogram_functions.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/system/sys_info.h" |
| #include "base/system/system_monitor.h" |
| #include "base/task/single_thread_task_runner.h" |
| #include "chromeos/ash/components/audio/audio_device.h" |
| #include "chromeos/ash/components/audio/audio_devices_pref_handler_stub.h" |
| #include "chromeos/ash/components/dbus/audio/cras_audio_client.h" |
| #include "chromeos/ash/components/dbus/audio/fake_cras_audio_client.h" |
| #include "chromeos/ash/components/dbus/audio/floss_media_client.h" |
| #include "device/bluetooth/floss/floss_features.h" |
| #include "third_party/cros_system_api/dbus/service_constants.h" |
| |
| namespace ash { |
| namespace { |
| |
| using ::std::max; |
| using ::std::min; |
| |
| // Default value for unmuting, as a percent in the range [0, 100]. |
| // Used when sound is unmuted, but volume was less than kMuteThresholdPercent. |
| const int kDefaultUnmuteVolumePercent = 4; |
| |
| // Volume value which should be considered as muted in range [0, 100]. |
| const int kMuteThresholdPercent = 1; |
| |
| // Mixer matrix, [0.5, 0.5; 0.5, 0.5] |
| const double kStereoToMono[] = {0.5, 0.5, 0.5, 0.5}; |
| // Mixer matrix, [1, 0; 0, 1] |
| const double kStereoToStereo[] = {1, 0, 0, 1}; |
| |
| // Number of entries we're willing to store in preferences. |
| const int kMaxDeviceStoredInPref = 100; |
| |
| CrasAudioHandler* g_cras_audio_handler = nullptr; |
| |
| bool IsSameAudioDevice(const AudioDevice& a, const AudioDevice& b) { |
| return a.stable_device_id == b.stable_device_id && a.is_input == b.is_input && |
| a.type == b.type && a.device_name == b.device_name; |
| } |
| |
| bool IsDeviceInList(const AudioDevice& device, const AudioNodeList& node_list) { |
| for (const AudioNode& node : node_list) { |
| if (device.stable_device_id == node.StableDeviceId()) |
| return true; |
| } |
| return false; |
| } |
| |
| // Gets the current state of the microphone mute switch. If the switch is on, |
| // cras will be kept in the muted state. The switch disables the internal audio |
| // input. |
| bool IsMicrophoneMuteSwitchOn() { |
| return ui::MicrophoneMuteSwitchMonitor::Get()->microphone_mute_switch_on(); |
| } |
| |
| } // namespace |
| |
| CrasAudioHandler::AudioObserver::AudioObserver() = default; |
| |
| CrasAudioHandler::AudioObserver::~AudioObserver() = default; |
| |
| void CrasAudioHandler::AudioObserver::OnOutputNodeVolumeChanged( |
| uint64_t /* node_id */, |
| int /* volume */) {} |
| |
| void CrasAudioHandler::AudioObserver::OnInputNodeGainChanged( |
| uint64_t /* node_id */, |
| int /* gain */) {} |
| |
| void CrasAudioHandler::AudioObserver::OnOutputMuteChanged(bool /* mute_on */) {} |
| |
| void CrasAudioHandler::AudioObserver::OnInputMuteChanged( |
| bool /* mute_on */, |
| InputMuteChangeMethod /* method */) {} |
| |
| void CrasAudioHandler::AudioObserver::OnInputMutedByMicrophoneMuteSwitchChanged( |
| bool /* muted */) {} |
| |
| void CrasAudioHandler::AudioObserver::OnAudioNodesChanged() {} |
| |
| void CrasAudioHandler::AudioObserver::OnActiveOutputNodeChanged() {} |
| |
| void CrasAudioHandler::AudioObserver::OnActiveInputNodeChanged() {} |
| |
| void CrasAudioHandler::AudioObserver::OnOutputChannelRemixingChanged( |
| bool /* mono_on */) {} |
| |
| void CrasAudioHandler::AudioObserver::OnNoiseCancellationStateChanged() {} |
| |
| void CrasAudioHandler::AudioObserver::OnHotwordTriggered( |
| uint64_t /* tv_sec */, |
| uint64_t /* tv_nsec */) {} |
| |
| void CrasAudioHandler::AudioObserver::OnBluetoothBatteryChanged( |
| const std::string& /* address */, |
| uint32_t /* level */) {} |
| |
| void CrasAudioHandler::AudioObserver:: |
| OnNumberOfInputStreamsWithPermissionChanged() {} |
| |
| void CrasAudioHandler::AudioObserver::OnOutputStarted() {} |
| |
| void CrasAudioHandler::AudioObserver::OnOutputStopped() {} |
| |
| void CrasAudioHandler::AudioObserver::OnNonChromeOutputStarted() {} |
| |
| void CrasAudioHandler::AudioObserver::OnNonChromeOutputStopped() {} |
| |
| void CrasAudioHandler::AudioObserver::OnSurveyTriggered( |
| const AudioSurveyData& /*survey_specific_data */) {} |
| |
| void CrasAudioHandler::AudioObserver::OnSpeakOnMuteDetected() {} |
| |
| void CrasAudioHandler::NumberOfNonChromeOutputStreamsChanged() { |
| GetNumberOfNonChromeOutputStreams(); |
| } |
| |
| // static |
| void CrasAudioHandler::Initialize( |
| mojo::PendingRemote<media_session::mojom::MediaControllerManager> |
| media_controller_manager, |
| scoped_refptr<AudioDevicesPrefHandler> audio_pref_handler) { |
| g_cras_audio_handler = new CrasAudioHandler( |
| std::move(media_controller_manager), audio_pref_handler); |
| } |
| |
| // static |
| void CrasAudioHandler::InitializeForTesting() { |
| CHECK(CrasAudioClient::Get()) << "CrasAudioClient must be initialized."; |
| |
| // Make sure FlossMediaClient has been initialized. |
| // TODO(b/228608730): Remove this after Floss bypasses CRAS to receive media |
| // information directly from the provider. |
| if (floss::features::IsFlossEnabled() && !FlossMediaClient::Get()) |
| FlossMediaClient::InitializeFake(); |
| CrasAudioHandler::Initialize(mojo::NullRemote(), |
| new AudioDevicesPrefHandlerStub()); |
| } |
| |
| // static |
| void CrasAudioHandler::Shutdown() { |
| delete g_cras_audio_handler; |
| g_cras_audio_handler = nullptr; |
| } |
| |
| // static |
| CrasAudioHandler* CrasAudioHandler::Get() { |
| return g_cras_audio_handler; |
| } |
| |
| void CrasAudioHandler::OnVideoCaptureStarted(media::VideoFacingMode facing) { |
| DCHECK(main_task_runner_); |
| if (!main_task_runner_->BelongsToCurrentThread()) { |
| main_task_runner_->PostTask( |
| FROM_HERE, |
| base::BindOnce(&CrasAudioHandler::OnVideoCaptureStartedOnMainThread, |
| weak_ptr_factory_.GetWeakPtr(), facing)); |
| return; |
| } |
| // Unittest may call this from the main thread. |
| OnVideoCaptureStartedOnMainThread(facing); |
| } |
| |
| void CrasAudioHandler::OnVideoCaptureStopped(media::VideoFacingMode facing) { |
| DCHECK(main_task_runner_); |
| if (!main_task_runner_->BelongsToCurrentThread()) { |
| main_task_runner_->PostTask( |
| FROM_HERE, |
| base::BindOnce(&CrasAudioHandler::OnVideoCaptureStoppedOnMainThread, |
| weak_ptr_factory_.GetWeakPtr(), facing)); |
| return; |
| } |
| // Unittest may call this from the main thread. |
| OnVideoCaptureStoppedOnMainThread(facing); |
| } |
| |
| void CrasAudioHandler::OnVideoCaptureStartedOnMainThread( |
| media::VideoFacingMode facing) { |
| DCHECK(main_task_runner_->BelongsToCurrentThread()); |
| // Do nothing if the device doesn't have both front and rear microphones. |
| if (!HasDualInternalMic()) |
| return; |
| |
| bool camera_is_already_on = IsCameraOn(); |
| switch (facing) { |
| case media::MEDIA_VIDEO_FACING_USER: |
| front_camera_on_ = true; |
| break; |
| case media::MEDIA_VIDEO_FACING_ENVIRONMENT: |
| rear_camera_on_ = true; |
| break; |
| default: |
| LOG_IF(WARNING, facing == media::NUM_MEDIA_VIDEO_FACING_MODES) |
| << "On the device with dual microphone, got video capture " |
| << "notification with invalid camera facing mode value"; |
| return; |
| } |
| |
| // If the camera is already on before this notification, don't change active |
| // input. In the case that both cameras are turned on at the same time, we |
| // won't change the active input after the first camera is turned on. We only |
| // support the use case of one camera on at a time. The third party |
| // developer can turn on/off both microphones with extension api if they like |
| // to. |
| if (camera_is_already_on) |
| return; |
| |
| // If the current active input is an external device, keep it. |
| const AudioDevice* active_input = GetDeviceFromId(active_input_node_id_); |
| if (active_input && active_input->IsExternalDevice()) |
| return; |
| |
| // Activate the correct mic for the current active camera. |
| ActivateMicForCamera(facing); |
| } |
| |
| void CrasAudioHandler::OnVideoCaptureStoppedOnMainThread( |
| media::VideoFacingMode facing) { |
| DCHECK(main_task_runner_->BelongsToCurrentThread()); |
| // Do nothing if the device doesn't have both front and rear microphones. |
| if (!HasDualInternalMic()) |
| return; |
| |
| switch (facing) { |
| case media::MEDIA_VIDEO_FACING_USER: |
| front_camera_on_ = false; |
| break; |
| case media::MEDIA_VIDEO_FACING_ENVIRONMENT: |
| rear_camera_on_ = false; |
| break; |
| default: |
| LOG_IF(WARNING, facing == media::NUM_MEDIA_VIDEO_FACING_MODES) |
| << "On the device with dual microphone, got video capture " |
| << "notification with invalid camera facing mode value"; |
| return; |
| } |
| |
| // If not all cameras are turned off, don't change active input. In the case |
| // that both cameras are turned on at the same time before one of them is |
| // stopped, we won't change active input until all of them are stopped. |
| // We only support the use case of one camera on at a time. The third party |
| // developer can turn on/off both microphones with extension api if they like |
| // to. |
| if (IsCameraOn()) |
| return; |
| |
| // If the current active input is an external device, keep it. |
| const AudioDevice* active_input = GetDeviceFromId(active_input_node_id_); |
| if (active_input && active_input->IsExternalDevice()) |
| return; |
| |
| // Switch to front mic properly. |
| DeviceActivateType activated_by = |
| HasExternalDevice(true) ? ACTIVATE_BY_USER : ACTIVATE_BY_PRIORITY; |
| SwitchToDevice(*GetDeviceByType(AudioDeviceType::kFrontMic), true, |
| activated_by); |
| } |
| |
| void CrasAudioHandler::HandleMediaSessionMetadataReset() { |
| const std::map<std::string, std::string> empty_metadata_map = { |
| {"title", ""}, {"artist", ""}, {"album", ""}}; |
| |
| // TODO(b/228608730): Remove this after Floss bypasses CRAS to receive media |
| // information directly from the provider. |
| if (floss::features::IsFlossEnabled()) { |
| FlossMediaClient::Get()->SetPlayerMetadata(empty_metadata_map); |
| FlossMediaClient::Get()->SetPlayerIdentity(""); |
| FlossMediaClient::Get()->SetPlayerPlaybackStatus("stopped"); |
| } else { |
| CrasAudioClient::Get()->SetPlayerMetadata(empty_metadata_map); |
| CrasAudioClient::Get()->SetPlayerIdentity(""); |
| CrasAudioClient::Get()->SetPlayerPlaybackStatus("stopped"); |
| } |
| } |
| |
| void CrasAudioHandler::MediaSessionInfoChanged( |
| media_session::mojom::MediaSessionInfoPtr session_info) { |
| if (!session_info) |
| return; |
| |
| std::string state = session_info->playback_state == |
| media_session::mojom::MediaPlaybackState::kPlaying |
| ? "playing" |
| : "paused"; |
| |
| // TODO(b/228608730): Remove this after Floss bypasses CRAS to receive media |
| // information directly from the provider. |
| if (floss::features::IsFlossEnabled()) { |
| FlossMediaClient::Get()->SetPlayerPlaybackStatus(state); |
| } else { |
| CrasAudioClient::Get()->SetPlayerPlaybackStatus(state); |
| } |
| } |
| |
| void CrasAudioHandler::MediaSessionMetadataChanged( |
| const absl::optional<media_session::MediaMetadata>& metadata) { |
| if (!metadata || metadata->IsEmpty()) { |
| HandleMediaSessionMetadataReset(); |
| return; |
| } |
| |
| const std::map<std::string, std::string> metadata_map = { |
| {"title", base::UTF16ToUTF8(metadata->title)}, |
| {"artist", base::UTF16ToUTF8(metadata->artist)}, |
| {"album", base::UTF16ToUTF8(metadata->album)}}; |
| const std::string source_title = base::UTF16ToUTF8(metadata->source_title); |
| |
| // Assume media duration/length should always change with new metadata. |
| fetch_media_session_duration_ = true; |
| |
| // TODO(b/228608730): Remove this after Floss bypasses CRAS to receive media |
| // information directly from the provider. |
| if (floss::features::IsFlossEnabled()) { |
| FlossMediaClient::Get()->SetPlayerMetadata(metadata_map); |
| FlossMediaClient::Get()->SetPlayerIdentity(source_title); |
| } else { |
| CrasAudioClient::Get()->SetPlayerMetadata(metadata_map); |
| CrasAudioClient::Get()->SetPlayerIdentity(source_title); |
| } |
| } |
| |
| void CrasAudioHandler::MediaSessionPositionChanged( |
| const absl::optional<media_session::MediaPosition>& position) { |
| if (!position) |
| return; |
| |
| int64_t duration = 0; |
| if (fetch_media_session_duration_) { |
| duration = position->duration().InMicroseconds(); |
| if (duration > 0) { |
| // TODO(b/228608730): Remove this after Floss bypasses the media |
| // information from CRAS. |
| if (floss::features::IsFlossEnabled()) { |
| FlossMediaClient::Get()->SetPlayerDuration(duration); |
| } else { |
| CrasAudioClient::Get()->SetPlayerDuration(duration); |
| } |
| fetch_media_session_duration_ = false; |
| } |
| } |
| |
| int64_t current_position = position->GetPosition().InMicroseconds(); |
| if (current_position < 0 || (duration > 0 && current_position > duration)) |
| return; |
| |
| // TODO(b/228608730): Remove this after Floss bypasses CRAS to receive media |
| // information directly from the provider. |
| if (floss::features::IsFlossEnabled()) { |
| FlossMediaClient::Get()->SetPlayerPosition(current_position); |
| } else { |
| CrasAudioClient::Get()->SetPlayerPosition(current_position); |
| } |
| } |
| |
| void CrasAudioHandler::OnMicrophoneMuteSwitchValueChanged(bool muted) { |
| input_muted_by_microphone_mute_switch_ = muted; |
| SetInputMute(muted, InputMuteChangeMethod::kPhysicalShutter); |
| |
| for (auto& observer : observers_) |
| observer.OnInputMutedByMicrophoneMuteSwitchChanged(muted); |
| } |
| |
| void CrasAudioHandler::AddAudioObserver(AudioObserver* observer) { |
| observers_.AddObserver(observer); |
| } |
| |
| void CrasAudioHandler::RemoveAudioObserver(AudioObserver* observer) { |
| observers_.RemoveObserver(observer); |
| } |
| |
| bool CrasAudioHandler::HasKeyboardMic() { |
| return GetKeyboardMic() != nullptr; |
| } |
| |
| bool CrasAudioHandler::HasHotwordDevice() { |
| return GetHotwordDevice() != nullptr; |
| } |
| |
| bool CrasAudioHandler::IsOutputMuted() { |
| return output_mute_on_; |
| } |
| |
| bool CrasAudioHandler::IsOutputMutedForDevice(uint64_t device_id) { |
| const AudioDevice* device = GetDeviceFromId(device_id); |
| if (!device) |
| return false; |
| DCHECK(!device->is_input); |
| return audio_pref_handler_->GetMuteValue(*device); |
| } |
| |
| bool CrasAudioHandler::IsOutputForceMuted() { |
| return IsOutputMutedByPolicy() || IsOutputMutedBySecurityCurtain(); |
| } |
| |
| bool CrasAudioHandler::IsOutputMutedByPolicy() { |
| return output_mute_forced_by_policy_; |
| } |
| |
| bool CrasAudioHandler::IsOutputMutedBySecurityCurtain() { |
| return output_mute_forced_by_security_curtain_; |
| } |
| |
| bool CrasAudioHandler::IsOutputVolumeBelowDefaultMuteLevel() { |
| return output_volume_ <= kMuteThresholdPercent; |
| } |
| |
| bool CrasAudioHandler::IsInputMuted() { |
| return input_mute_on_; |
| } |
| |
| bool CrasAudioHandler::IsInputMutedForDevice(uint64_t device_id) { |
| const AudioDevice* device = GetDeviceFromId(device_id); |
| if (!device) |
| return false; |
| DCHECK(device->is_input); |
| // We don't record input mute state for each device in the prefs, |
| // for any non-active input device, we assume mute is off. |
| if (device->id == active_input_node_id_) |
| return input_mute_on_; |
| return false; |
| } |
| |
| int CrasAudioHandler::GetOutputDefaultVolumeMuteThreshold() const { |
| return kMuteThresholdPercent; |
| } |
| |
| int CrasAudioHandler::GetOutputVolumePercent() { |
| return output_volume_; |
| } |
| |
| int CrasAudioHandler::GetOutputVolumePercentForDevice(uint64_t device_id) { |
| if (device_id == active_output_node_id_) |
| return output_volume_; |
| const AudioDevice* device = GetDeviceFromId(device_id); |
| return static_cast<int>(audio_pref_handler_->GetOutputVolumeValue(device)); |
| } |
| |
| int CrasAudioHandler::GetInputGainPercent() { |
| return input_gain_; |
| } |
| |
| int CrasAudioHandler::GetInputGainPercentForDevice(uint64_t device_id) { |
| if (device_id == active_input_node_id_) |
| return input_gain_; |
| const AudioDevice* device = GetDeviceFromId(device_id); |
| return static_cast<int>(audio_pref_handler_->GetInputGainValue(device)); |
| } |
| |
| uint64_t CrasAudioHandler::GetPrimaryActiveOutputNode() const { |
| return active_output_node_id_; |
| } |
| |
| uint64_t CrasAudioHandler::GetPrimaryActiveInputNode() const { |
| return active_input_node_id_; |
| } |
| |
| void CrasAudioHandler::GetAudioDevices(AudioDeviceList* device_list) const { |
| device_list->clear(); |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| device_list->push_back(device); |
| } |
| } |
| |
| bool CrasAudioHandler::GetPrimaryActiveOutputDevice(AudioDevice* device) const { |
| const AudioDevice* active_device = GetDeviceFromId(active_output_node_id_); |
| if (!active_device || !device) |
| return false; |
| *device = *active_device; |
| return true; |
| } |
| |
| bool CrasAudioHandler::GetPrimaryActiveInputDevice(AudioDevice* device) const { |
| const AudioDevice* active_device = GetDeviceFromId(active_input_node_id_); |
| if (!active_device || !device) { |
| return false; |
| } |
| *device = *active_device; |
| return true; |
| } |
| |
| const AudioDevice* CrasAudioHandler::GetDeviceByType(AudioDeviceType type) { |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (device.type == type) |
| return &device; |
| } |
| return nullptr; |
| } |
| |
| base::flat_map<CrasAudioHandler::ClientType, uint32_t> |
| CrasAudioHandler::GetNumberOfInputStreamsWithPermission() const { |
| return number_of_input_streams_with_permission_; |
| } |
| |
| void CrasAudioHandler::GetDefaultOutputBufferSize(int32_t* buffer_size) const { |
| *buffer_size = default_output_buffer_size_; |
| } |
| |
| bool CrasAudioHandler::IsNoiseCancellationSupportedForDevice( |
| uint64_t device_id) { |
| if (!noise_cancellation_supported()) { |
| return false; |
| } |
| |
| const AudioDevice* device = GetDeviceFromId(device_id); |
| if (!device) { |
| return false; |
| } |
| |
| if (!device->is_input) { |
| return false; |
| } |
| |
| return device->audio_effect & cras::EFFECT_TYPE_NOISE_CANCELLATION; |
| } |
| |
| bool CrasAudioHandler::GetNoiseCancellationState() const { |
| return audio_pref_handler_->GetNoiseCancellationState(); |
| } |
| |
| void CrasAudioHandler::RefreshNoiseCancellationState() { |
| if (!noise_cancellation_supported()) { |
| return; |
| } |
| |
| const AudioDevice* internal_mic = |
| GetDeviceByType(AudioDeviceType::kInternalMic); |
| |
| if (!internal_mic) { |
| return; |
| } |
| |
| // Refresh should only update the state in CRAS and leave the preference |
| // as-is. |
| CrasAudioClient::Get()->SetNoiseCancellationEnabled( |
| GetNoiseCancellationState() && |
| (internal_mic->audio_effect & cras::EFFECT_TYPE_NOISE_CANCELLATION)); |
| } |
| |
| void CrasAudioHandler::SetNoiseCancellationState( |
| bool noise_cancellation_on, |
| AudioSettingsChangeSource source) { |
| CrasAudioClient::Get()->SetNoiseCancellationEnabled(noise_cancellation_on); |
| audio_pref_handler_->SetNoiseCancellationState(noise_cancellation_on); |
| |
| for (auto& observer : observers_) { |
| observer.OnNoiseCancellationStateChanged(); |
| } |
| base::UmaHistogramEnumeration(kNoiseCancellationEnabledSourceHistogramName, |
| source); |
| } |
| |
| void CrasAudioHandler::RequestNoiseCancellationSupported( |
| OnNoiseCancellationSupportedCallback callback) { |
| CrasAudioClient::Get()->GetNoiseCancellationSupported( |
| base::BindOnce(&CrasAudioHandler::HandleGetNoiseCancellationSupported, |
| weak_ptr_factory_.GetWeakPtr(), std::move(callback))); |
| } |
| |
| void CrasAudioHandler::HandleGetNoiseCancellationSupported( |
| OnNoiseCancellationSupportedCallback callback, |
| absl::optional<bool> noise_cancellation_supported) { |
| if (!noise_cancellation_supported.has_value()) { |
| LOG(ERROR) |
| << "cras_audio_handler: Failed to retrieve noise cancellation support"; |
| } else { |
| noise_cancellation_supported_ = noise_cancellation_supported.value(); |
| } |
| |
| std::move(callback).Run(); |
| } |
| |
| void CrasAudioHandler::SetNoiseCancellationSupportedForTesting(bool supported) { |
| noise_cancellation_supported_ = supported; |
| } |
| |
| void CrasAudioHandler::SetKeyboardMicActive(bool active) { |
| const AudioDevice* keyboard_mic = GetKeyboardMic(); |
| if (!keyboard_mic) |
| return; |
| // Keyboard mic is invisible to chromeos users. It is always added or removed |
| // as additional active node. |
| DCHECK(active_input_node_id_ && active_input_node_id_ != keyboard_mic->id); |
| if (active) |
| AddActiveNode(keyboard_mic->id, true); |
| else |
| RemoveActiveNodeInternal(keyboard_mic->id, true); |
| } |
| |
| void CrasAudioHandler::SetSpeakOnMuteDetection(bool som_on) { |
| CrasAudioClient::Get()->SetSpeakOnMuteDetection(som_on); |
| } |
| |
| void CrasAudioHandler::AddActiveNode(uint64_t node_id, bool notify) { |
| const AudioDevice* device = GetDeviceFromId(node_id); |
| if (!device) { |
| VLOG(1) << "AddActiveInputNode: Cannot find device id=" |
| << "0x" << std::hex << node_id; |
| return; |
| } |
| |
| // If there is no primary active device, set |node_id| to primary active node. |
| if ((device->is_input && !active_input_node_id_) || |
| (!device->is_input && !active_output_node_id_)) { |
| SwitchToDevice(*device, notify, ACTIVATE_BY_USER); |
| return; |
| } |
| |
| AddAdditionalActiveNode(node_id, notify); |
| } |
| |
| void CrasAudioHandler::ChangeActiveNodes(const NodeIdList& new_active_ids) { |
| AudioDeviceList input_devices; |
| AudioDeviceList output_devices; |
| |
| for (uint64_t id : new_active_ids) { |
| const AudioDevice* device = GetDeviceFromId(id); |
| if (!device) |
| continue; |
| if (device->is_input) |
| input_devices.push_back(*device); |
| else |
| output_devices.push_back(*device); |
| } |
| if (!input_devices.empty()) |
| SetActiveDevices(input_devices, true /* is_input */); |
| if (!output_devices.empty()) |
| SetActiveDevices(output_devices, false /* is_input */); |
| } |
| |
| bool CrasAudioHandler::SetActiveInputNodes(const NodeIdList& node_ids) { |
| return SetActiveNodes(node_ids, true /* is_input */); |
| } |
| |
| bool CrasAudioHandler::SetActiveOutputNodes(const NodeIdList& node_ids) { |
| return SetActiveNodes(node_ids, false /* is_input */); |
| } |
| |
| bool CrasAudioHandler::SetActiveNodes(const NodeIdList& node_ids, |
| bool is_input) { |
| AudioDeviceList devices; |
| for (uint64_t id : node_ids) { |
| const AudioDevice* device = GetDeviceFromId(id); |
| if (!device || device->is_input != is_input) |
| return false; |
| |
| devices.push_back(*device); |
| } |
| |
| SetActiveDevices(devices, is_input); |
| return true; |
| } |
| |
| void CrasAudioHandler::SetActiveDevices(const AudioDeviceList& devices, |
| bool is_input) { |
| std::set<uint64_t> new_active_ids; |
| for (const auto& active_device : devices) { |
| CHECK_EQ(is_input, active_device.is_input); |
| new_active_ids.insert(active_device.id); |
| } |
| |
| bool active_devices_changed = false; |
| |
| // If primary active node has to be switched, do that before adding or |
| // removing any other active devices. Switching to a device can change |
| // activity state of other devices - final device activity may end up being |
| // unintended if it is set before active device switches. |
| uint64_t primary_active = |
| is_input ? active_input_node_id_ : active_output_node_id_; |
| if (!new_active_ids.count(primary_active) && !devices.empty()) { |
| active_devices_changed = true; |
| SwitchToDevice(devices[0], false /* notify */, ACTIVATE_BY_USER); |
| } |
| |
| AudioDeviceList existing_devices; |
| GetAudioDevices(&existing_devices); |
| for (const auto& existing_device : existing_devices) { |
| if (existing_device.is_input != is_input) |
| continue; |
| |
| bool should_be_active = new_active_ids.count(existing_device.id); |
| if (existing_device.active == should_be_active) |
| continue; |
| active_devices_changed = true; |
| |
| if (should_be_active) |
| AddActiveNode(existing_device.id, false /* notify */); |
| else |
| RemoveActiveNodeInternal(existing_device.id, false /* notify */); |
| } |
| |
| if (active_devices_changed) |
| NotifyActiveNodeChanged(is_input); |
| } |
| |
| void CrasAudioHandler::SetHotwordModel(uint64_t node_id, |
| const std::string& hotword_model, |
| VoidCrasAudioHandlerCallback callback) { |
| CrasAudioClient::Get()->SetHotwordModel(node_id, hotword_model, |
| std::move(callback)); |
| } |
| |
| void CrasAudioHandler::SwapInternalSpeakerLeftRightChannel(bool swap) { |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (!device.is_input && device.type == AudioDeviceType::kInternalSpeaker) { |
| CrasAudioClient::Get()->SwapLeftRight(device.id, swap); |
| break; |
| } |
| } |
| } |
| |
| void CrasAudioHandler::SetDisplayRotation(cras::DisplayRotation rotation) { |
| display_rotation_ = rotation; |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (device.type == AudioDeviceType::kInternalSpeaker) { |
| CrasAudioClient::Get()->SetDisplayRotation(device.id, display_rotation_); |
| break; |
| } |
| } |
| } |
| |
| void CrasAudioHandler::SetOutputMonoEnabled(bool enabled) { |
| if (output_mono_enabled_ == enabled) |
| return; |
| output_mono_enabled_ = enabled; |
| if (enabled) { |
| CrasAudioClient::Get()->SetGlobalOutputChannelRemix( |
| output_channels_, |
| std::vector<double>(kStereoToMono, std::end(kStereoToMono))); |
| } else { |
| CrasAudioClient::Get()->SetGlobalOutputChannelRemix( |
| output_channels_, |
| std::vector<double>(kStereoToStereo, std::end(kStereoToStereo))); |
| } |
| |
| for (auto& observer : observers_) |
| observer.OnOutputChannelRemixingChanged(enabled); |
| } |
| |
| bool CrasAudioHandler::has_alternative_input() const { |
| return has_alternative_input_; |
| } |
| |
| bool CrasAudioHandler::has_alternative_output() const { |
| return has_alternative_output_; |
| } |
| |
| void CrasAudioHandler::SetOutputVolumePercent(int volume_percent) { |
| // Set all active devices to the same volume. |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (!device.is_input && device.active) |
| SetOutputNodeVolumePercent(device.id, volume_percent); |
| } |
| } |
| |
| // TODO: Rename the 'Percent' to something more meaningful. |
| void CrasAudioHandler::SetInputGainPercent(int gain_percent) { |
| // TODO(jennyz): Should we set all input devices' gain to the same level? |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (device.is_input && device.active) |
| SetInputNodeGainPercent(active_input_node_id_, gain_percent); |
| } |
| } |
| |
| void CrasAudioHandler::AdjustOutputVolumeByPercent(int adjust_by_percent) { |
| SetOutputVolumePercent(output_volume_ + adjust_by_percent); |
| } |
| |
| void CrasAudioHandler::IncreaseOutputVolumeByOneStep(int one_step_percent) { |
| // Set all active devices to the same volume. |
| int new_output_volume = 0; |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (!device.is_input && device.active) { |
| // only USB device should depend on number_of_volume_steps |
| if (device.type == AudioDeviceType::kUsb) { |
| int32_t number_of_volume_steps = device.number_of_volume_steps; |
| if (number_of_volume_steps == 0) { |
| LOG(ERROR) |
| << device.ToString() |
| << ": No valid number_of_volume_steps. Falling back to default."; |
| number_of_volume_steps = NUMBER_OF_VOLUME_STEPS_DEFAULT; |
| } |
| int32_t volume_level = std::round( |
| (double)output_volume_ * (double)number_of_volume_steps * 0.01); |
| if (volume_level == 0 && output_volume_ > 0) { |
| volume_level = 1; |
| } |
| // increase one level and convert to volume |
| new_output_volume = std::min( |
| 100, static_cast<int>(std::floor(((double)(volume_level + 1)) / |
| number_of_volume_steps * 100))); |
| } else { |
| new_output_volume = std::min(100, output_volume_ + one_step_percent); |
| } |
| SetOutputNodeVolumePercent(device.id, new_output_volume); |
| } |
| } |
| } |
| |
| void CrasAudioHandler::DecreaseOutputVolumeByOneStep(int one_step_percent) { |
| // Set all active devices to the same volume. |
| int new_output_volume = 0; |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (!device.is_input && device.active) { |
| if (device.type == AudioDeviceType::kUsb) { |
| int32_t number_of_volume_steps = device.number_of_volume_steps; |
| if (number_of_volume_steps == 0) { |
| LOG(ERROR) |
| << device.ToString() |
| << ": No valid number_of_volume_steps. Falling back to default."; |
| number_of_volume_steps = NUMBER_OF_VOLUME_STEPS_DEFAULT; |
| } |
| int32_t volume_level = std::round( |
| (double)output_volume_ * (double)number_of_volume_steps * 0.01); |
| |
| // decrease one level and convert to volume |
| new_output_volume = std::max( |
| 0, static_cast<int>(std::floor(((double)(volume_level - 1)) / |
| number_of_volume_steps * 100))); |
| } else { |
| new_output_volume = std::max(0, output_volume_ - one_step_percent); |
| } |
| SetOutputNodeVolumePercent(device.id, new_output_volume); |
| } |
| } |
| } |
| |
| void CrasAudioHandler::SetOutputMute(bool mute_on) { |
| if (!SetOutputMuteInternal(mute_on)) |
| return; |
| |
| // Save the mute state for all active output audio devices. |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (!device.is_input && device.active) { |
| audio_pref_handler_->SetMuteValue(device, output_mute_on_); |
| } |
| } |
| |
| for (auto& observer : observers_) |
| observer.OnOutputMuteChanged(output_mute_on_); |
| } |
| |
| void CrasAudioHandler::SetOutputMute( |
| bool mute_on, |
| CrasAudioHandler::AudioSettingsChangeSource source) { |
| SetOutputMute(mute_on); |
| base::UmaHistogramEnumeration( |
| CrasAudioHandler::kOutputVolumeMuteSourceHistogramName, source); |
| } |
| |
| void CrasAudioHandler::SetOutputMuteLockedBySecurityCurtain(bool mute_on) { |
| if (output_mute_forced_by_security_curtain_ == mute_on) |
| return; |
| |
| output_mute_forced_by_security_curtain_ = mute_on; |
| UpdateAudioMute(); |
| } |
| |
| void CrasAudioHandler::AdjustOutputVolumeToAudibleLevel() { |
| if (features::IsAudioPeripheralVolumeGranularityEnabled()) { |
| if (output_volume_ <= kMuteThresholdPercent) { |
| for (const auto& item : audio_devices_) { |
| int unmute_volume = kDefaultUnmuteVolumePercent; |
| const AudioDevice& device = item.second; |
| if (!device.is_input && device.active) { |
| if (device.type == AudioDeviceType::kUsb) { |
| int32_t number_of_volume_steps = device.number_of_volume_steps; |
| DCHECK(number_of_volume_steps > 0); |
| unmute_volume = 100 / number_of_volume_steps; |
| } |
| SetOutputNodeVolumePercent(device.id, unmute_volume); |
| } |
| } |
| } else { |
| if (output_volume_ <= kMuteThresholdPercent) { |
| // Avoid the situation when sound has been unmuted, but the volume |
| // is set to a very low value, so user still can't hear any sound. |
| SetOutputVolumePercent(kDefaultUnmuteVolumePercent); |
| } |
| } |
| } |
| } |
| |
| void CrasAudioHandler::SetInputMute(bool mute_on, |
| InputMuteChangeMethod method) { |
| const bool old_mute_on = input_mute_on_; |
| SetInputMuteInternal(mute_on); |
| |
| if (old_mute_on != input_mute_on_) { |
| for (auto& observer : observers_) |
| observer.OnInputMuteChanged(input_mute_on_, method); |
| } |
| } |
| |
| void CrasAudioHandler::SetInputMute( |
| bool mute_on, |
| InputMuteChangeMethod method, |
| CrasAudioHandler::AudioSettingsChangeSource source) { |
| SetInputMute(mute_on, method); |
| base::UmaHistogramEnumeration( |
| CrasAudioHandler::kInputGainMuteSourceHistogramName, source); |
| } |
| |
| void CrasAudioHandler::SetActiveDevice(const AudioDevice& active_device, |
| bool notify, |
| DeviceActivateType activate_by) { |
| if (activate_by == ACTIVATE_BY_USER) { |
| if (active_device.is_input) { |
| base::RecordAction( |
| base::UserMetricsAction("StatusArea_Audio_SwitchInputDevice")); |
| if (!input_device_selected_by_user_) { |
| base::RecordAction(base::UserMetricsAction( |
| "StatusArea_Audio_AutoInputSelectionOverridden")); |
| } |
| } else { |
| base::RecordAction( |
| base::UserMetricsAction("StatusArea_Audio_SwitchOutputDevice")); |
| if (!output_device_selected_by_user_) { |
| base::RecordAction(base::UserMetricsAction( |
| "StatusArea_Audio_AutoOutputSelectionOverridden")); |
| } |
| } |
| } |
| |
| // Update *_selected_by_user_. |
| // Including to unset it when selected by priority or by camera. |
| if (active_device.is_input) { |
| input_device_selected_by_user_ = activate_by == ACTIVATE_BY_USER; |
| } else { |
| output_device_selected_by_user_ = activate_by == ACTIVATE_BY_USER; |
| } |
| |
| if (active_device.is_input) |
| CrasAudioClient::Get()->SetActiveInputNode(active_device.id); |
| else |
| CrasAudioClient::Get()->SetActiveOutputNode(active_device.id); |
| |
| if (notify) |
| NotifyActiveNodeChanged(active_device.is_input); |
| |
| // Save active state for the nodes. |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (device.is_input != active_device.is_input) |
| continue; |
| SaveDeviceState(device, device.active, activate_by); |
| } |
| } |
| |
| void CrasAudioHandler::SaveDeviceState(const AudioDevice& device, |
| bool active, |
| DeviceActivateType activate_by) { |
| // Don't save the active state for non-simple usage device, which is invisible |
| // to end users. |
| if (!device.is_for_simple_usage()) |
| return; |
| |
| if (!active) { |
| audio_pref_handler_->SetDeviceActive(device, false, false); |
| } else { |
| switch (activate_by) { |
| case ACTIVATE_BY_USER: |
| audio_pref_handler_->SetDeviceActive(device, true, true); |
| break; |
| case ACTIVATE_BY_PRIORITY: |
| audio_pref_handler_->SetDeviceActive(device, true, false); |
| break; |
| default: |
| // The device is made active due to its previous active state in prefs, |
| // don't change its active state settings in prefs. |
| break; |
| } |
| } |
| } |
| |
| void CrasAudioHandler::SetVolumeGainPercentForDevice(uint64_t device_id, |
| int value) { |
| const AudioDevice* device = GetDeviceFromId(device_id); |
| if (!device) |
| return; |
| |
| if (device->is_input) |
| SetInputNodeGainPercent(device_id, value); |
| else |
| SetOutputNodeVolumePercent(device_id, value); |
| } |
| |
| void CrasAudioHandler::SetMuteForDevice(uint64_t device_id, bool mute_on) { |
| if (device_id == active_output_node_id_) { |
| SetOutputMute(mute_on); |
| return; |
| } |
| if (device_id == active_input_node_id_) { |
| VLOG(1) << "SetMuteForDevice sets active input device id=" |
| << "0x" << std::hex << device_id << " mute=" << mute_on; |
| SetInputMute(mute_on, InputMuteChangeMethod::kOther); |
| return; |
| } |
| |
| const AudioDevice* device = GetDeviceFromId(device_id); |
| // Input device's mute state is not recorded in the pref. crbug.com/365050. |
| if (device && !device->is_input) |
| audio_pref_handler_->SetMuteValue(*device, mute_on); |
| } |
| |
| void CrasAudioHandler::SetMuteForDevice( |
| uint64_t device_id, |
| bool mute_on, |
| CrasAudioHandler::AudioSettingsChangeSource source) { |
| SetMuteForDevice(device_id, mute_on); |
| if (device_id == active_output_node_id_) { |
| base::UmaHistogramEnumeration( |
| CrasAudioHandler::kOutputVolumeMuteSourceHistogramName, source); |
| } else if (device_id == active_input_node_id_) { |
| base::UmaHistogramEnumeration( |
| CrasAudioHandler::kInputGainMuteSourceHistogramName, source); |
| } |
| } |
| |
| // If the HDMI device is the active output device, when the device enters/exits |
| // docking mode, or HDMI display changes resolution, or chromeos device |
| // suspends/resumes, cras will lose the HDMI output node for a short period of |
| // time, then rediscover it. This hotplug behavior will cause the audio output |
| // be leaked to the alternatvie active audio output during HDMI re-discovering |
| // period. See crbug.com/503667. |
| void CrasAudioHandler::SetActiveHDMIOutoutRediscoveringIfNecessary( |
| bool force_rediscovering) { |
| if (!GetDeviceFromId(active_output_node_id_)) |
| return; |
| |
| // Marks the start of the HDMI re-discovering grace period, during which we |
| // will mute the audio output to prevent it to be be leaked to the |
| // alternative output device. |
| if ((hdmi_rediscovering_ && force_rediscovering) || |
| (!hdmi_rediscovering_ && IsHDMIPrimaryOutputDevice())) { |
| StartHDMIRediscoverGracePeriod(); |
| } |
| } |
| |
| CrasAudioHandler::CrasAudioHandler( |
| mojo::PendingRemote<media_session::mojom::MediaControllerManager> |
| media_controller_manager, |
| scoped_refptr<AudioDevicesPrefHandler> audio_pref_handler) |
| : media_controller_manager_(std::move(media_controller_manager)), |
| audio_pref_handler_(audio_pref_handler) { |
| DCHECK(audio_pref_handler); |
| DCHECK(CrasAudioClient::Get()); |
| CrasAudioClient::Get()->AddObserver(this); |
| audio_pref_handler_->AddAudioPrefObserver(this); |
| ui::MicrophoneMuteSwitchMonitor::Get()->AddObserver(this); |
| |
| BindMediaControllerObserver(); |
| InitializeAudioState(); |
| // Unittest may not have the task runner for the current thread. |
| if (base::SingleThreadTaskRunner::HasCurrentDefault()) |
| main_task_runner_ = base::SingleThreadTaskRunner::GetCurrentDefault(); |
| |
| DCHECK(!g_cras_audio_handler); |
| g_cras_audio_handler = this; |
| } |
| |
| CrasAudioHandler::~CrasAudioHandler() { |
| hdmi_rediscover_timer_.Stop(); |
| DCHECK(CrasAudioClient::Get()); |
| CrasAudioClient::Get()->RemoveObserver(this); |
| audio_pref_handler_->RemoveAudioPrefObserver(this); |
| ui::MicrophoneMuteSwitchMonitor::Get()->RemoveObserver(this); |
| |
| DCHECK(g_cras_audio_handler); |
| g_cras_audio_handler = nullptr; |
| } |
| |
| void CrasAudioHandler::BindMediaControllerObserver() { |
| if (!media_controller_manager_) |
| return; |
| media_controller_manager_->CreateActiveMediaController( |
| media_session_controller_remote_.BindNewPipeAndPassReceiver()); |
| media_session_controller_remote_->AddObserver( |
| media_controller_observer_receiver_.BindNewPipeAndPassRemote()); |
| } |
| |
| void CrasAudioHandler::AudioClientRestarted() { |
| InitializeAudioState(); |
| } |
| |
| void CrasAudioHandler::NodesChanged() { |
| if (cras_service_available_) |
| GetNodes(); |
| } |
| |
| void CrasAudioHandler::OutputNodeVolumeChanged(uint64_t node_id, int volume) { |
| const AudioDevice* device = this->GetDeviceFromId(node_id); |
| if (!device || device->is_input) { |
| LOG(ERROR) << "Unexpected OutputNodeVolumeChanged received on node: 0x" |
| << std::hex << node_id; |
| return; |
| } |
| if (volume < 0 || volume > 100) { |
| LOG(ERROR) << "Unexpected OutputNodeVolumeChanged received on volume: " |
| << volume; |
| return; |
| } |
| |
| // Sync internal volume state and notify UI for the change. We trust cras |
| // signal to report the volume state of the device, no matter which source |
| // set the volume, i.e., volume could be set from non-chrome source, like |
| // Bluetooth headset, etc. Assume all active output devices share a single |
| // volume. |
| if (device->active) { |
| output_volume_ = volume; |
| } |
| audio_pref_handler_->SetVolumeGainValue(*device, volume); |
| |
| if (initializing_audio_state_) { |
| // Do not notify the observers for volume changed event if CrasAudioHandler |
| // is initializing its state, i.e., the volume change event is in responding |
| // to SetOutputNodeVolume request from intializaing audio state, not |
| // from user action, no need to notify UI to pop uo the volume slider bar. |
| if (init_node_id_ == node_id && init_volume_ == volume) { |
| --init_volume_count_; |
| if (!init_volume_count_) |
| initializing_audio_state_ = false; |
| return; |
| } else { |
| // Reset the initializing_audio_state_ in case SetOutputNodeVolume request |
| // is lost by cras due to cras is not ready when CrasAudioHandler is being |
| // initialized. |
| initializing_audio_state_ = false; |
| init_volume_count_ = 0; |
| } |
| } |
| |
| for (auto& observer : observers_) |
| observer.OnOutputNodeVolumeChanged(node_id, volume); |
| } |
| |
| void CrasAudioHandler::InputNodeGainChanged(uint64_t node_id, int gain) { |
| const AudioDevice* device = this->GetDeviceFromId(node_id); |
| |
| if (!device || !device->is_input) { |
| LOG(ERROR) << "Unexpexted InputNodeGainChanged received on node: 0x" |
| << std::hex << node_id; |
| return; |
| } |
| |
| if (device->active) { |
| input_gain_ = gain; |
| } |
| |
| audio_pref_handler_->SetVolumeGainValue(*device, gain); |
| |
| for (auto& observer : observers_) { |
| observer.OnInputNodeGainChanged(node_id, gain); |
| } |
| } |
| |
| void CrasAudioHandler::ActiveOutputNodeChanged(uint64_t node_id) { |
| if (active_output_node_id_ == node_id) |
| return; |
| |
| // Active audio output device should always be changed by chrome. |
| // During system boot, cras may change active input to unknown device 0x1, |
| // we don't need to log it, since it is not an valid device. |
| if (GetDeviceFromId(node_id)) { |
| LOG(WARNING) << "Active output node changed unexpectedly by system node_id=" |
| << "0x" << std::hex << node_id; |
| } |
| } |
| |
| void CrasAudioHandler::ActiveInputNodeChanged(uint64_t node_id) { |
| if (active_input_node_id_ == node_id) |
| return; |
| |
| // Active audio input device should always be changed by chrome. |
| // During system boot, cras may change active input to unknown device 0x2, |
| // we don't need to log it, since it is not an valid device. |
| if (GetDeviceFromId(node_id)) { |
| LOG(WARNING) << "Active input node changed unexpectedly by system node_id=" |
| << "0x" << std::hex << node_id; |
| } |
| } |
| |
| void CrasAudioHandler::HotwordTriggered(uint64_t tv_sec, uint64_t tv_nsec) { |
| for (auto& observer : observers_) |
| observer.OnHotwordTriggered(tv_sec, tv_nsec); |
| } |
| |
| void CrasAudioHandler::NumberOfActiveStreamsChanged() { |
| GetNumberOfOutputStreams(); |
| } |
| |
| void CrasAudioHandler::BluetoothBatteryChanged(const std::string& address, |
| uint32_t level) { |
| for (auto& observer : observers_) |
| observer.OnBluetoothBatteryChanged(address, level); |
| } |
| |
| void CrasAudioHandler::NumberOfInputStreamsWithPermissionChanged( |
| const base::flat_map<std::string, uint32_t>& num_input_streams) { |
| HandleGetNumberOfInputStreamsWithPermission(num_input_streams); |
| for (auto& observer : observers_) |
| observer.OnNumberOfInputStreamsWithPermissionChanged(); |
| } |
| |
| void CrasAudioHandler::SurveyTriggered( |
| const base::flat_map<std::string, std::string>& survey_specific_data) { |
| for (auto& observer : observers_) |
| observer.OnSurveyTriggered(survey_specific_data); |
| } |
| |
| void CrasAudioHandler::SpeakOnMuteDetected() { |
| for (auto& observer : observers_) { |
| observer.OnSpeakOnMuteDetected(); |
| } |
| } |
| |
| void CrasAudioHandler::ResendBluetoothBattery() { |
| CrasAudioClient::Get()->ResendBluetoothBattery(); |
| } |
| |
| void CrasAudioHandler::SetPrefHandlerForTesting( |
| scoped_refptr<AudioDevicesPrefHandler> audio_pref_handler) { |
| audio_pref_handler_->RemoveAudioPrefObserver(this); |
| audio_pref_handler_ = audio_pref_handler; |
| audio_pref_handler_->AddAudioPrefObserver(this); |
| } |
| |
| void CrasAudioHandler::OnAudioPolicyPrefChanged() { |
| ApplyAudioPolicy(); |
| } |
| |
| const AudioDevice* CrasAudioHandler::GetDeviceFromId(uint64_t device_id) const { |
| AudioDeviceMap::const_iterator it = audio_devices_.find(device_id); |
| if (it == audio_devices_.end()) |
| return nullptr; |
| return &it->second; |
| } |
| |
| AudioDevice CrasAudioHandler::ConvertAudioNodeWithModifiedPriority( |
| const AudioNode& node) { |
| AudioDevice device(node); |
| if (deprioritize_bt_wbs_mic_ && device.is_input && |
| (device.type == AudioDeviceType::kBluetooth)) |
| device.priority = 0; |
| |
| if (base::FeatureList::IsEnabled(features::kRobustAudioDeviceSelectLogic)) |
| device.user_priority = audio_pref_handler_->GetUserPriority(device); |
| |
| return device; |
| } |
| |
| const AudioDevice* CrasAudioHandler::GetDeviceFromStableDeviceId( |
| uint64_t stable_device_id) const { |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (device.stable_device_id == stable_device_id) |
| return &device; |
| } |
| return nullptr; |
| } |
| |
| const AudioDevice* CrasAudioHandler::GetKeyboardMic() const { |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (device.is_input && device.type == AudioDeviceType::kKeyboardMic) |
| return &device; |
| } |
| return nullptr; |
| } |
| |
| const AudioDevice* CrasAudioHandler::GetHotwordDevice() const { |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (device.is_input && device.type == AudioDeviceType::kHotword) |
| return &device; |
| } |
| return nullptr; |
| } |
| |
| void CrasAudioHandler::SetupAudioInputState() { |
| // Set the initial audio state to the ones read from audio prefs. |
| const AudioDevice* device = GetDeviceFromId(active_input_node_id_); |
| if (!device) { |
| LOG(ERROR) << "Can't set up audio state for unknown input device id =" |
| << "0x" << std::hex << active_input_node_id_; |
| return; |
| } |
| input_gain_ = audio_pref_handler_->GetInputGainValue(device); |
| VLOG(1) << "SetupAudioInputState for active device id=" |
| << "0x" << std::hex << device->id << " mute=" << input_mute_on_; |
| SetInputMuteInternal(input_mute_on_); |
| |
| SetInputNodeGain(active_input_node_id_, input_gain_); |
| } |
| |
| void CrasAudioHandler::SetupAudioOutputState() { |
| const AudioDevice* device = GetDeviceFromId(active_output_node_id_); |
| if (!device) { |
| LOG(ERROR) << "Can't set up audio state for unknown output device id =" |
| << "0x" << std::hex << active_output_node_id_; |
| return; |
| } |
| DCHECK(!device->is_input); |
| // Mute the output during HDMI re-discovering grace period. |
| if (hdmi_rediscovering_ && !IsHDMIPrimaryOutputDevice()) { |
| VLOG(1) << "Mute the output during HDMI re-discovering grace period"; |
| SetOutputMuteInternal(true); |
| } else { |
| SetOutputMuteInternal(audio_pref_handler_->GetMuteValue(*device)); |
| } |
| output_volume_ = audio_pref_handler_->GetOutputVolumeValue(device); |
| |
| if (initializing_audio_state_) { |
| // During power up, InitializeAudioState() could be called twice, first |
| // by CrasAudioHandler constructor, then by cras server restarting signal, |
| // both sending SetOutputNodeVolume requests, and could lead to two |
| // OutputNodeVolumeChanged signals. |
| ++init_volume_count_; |
| init_node_id_ = active_output_node_id_; |
| init_volume_ = output_volume_; |
| } |
| SetOutputNodeVolume(active_output_node_id_, output_volume_); |
| } |
| |
| // This sets up the state of an additional active node. |
| void CrasAudioHandler::SetupAdditionalActiveAudioNodeState(uint64_t node_id) { |
| const AudioDevice* device = GetDeviceFromId(node_id); |
| if (!device) { |
| VLOG(1) << "Can't set up audio state for unknown device id =" |
| << "0x" << std::hex << node_id; |
| return; |
| } |
| |
| DCHECK(node_id != active_output_node_id_ && node_id != active_input_node_id_); |
| |
| // Note: The mute state is a system wide state, we don't set mute per device, |
| // but just keep the mute state consistent for the active node in prefs. |
| // The output volume should be set to the same value for all active output |
| // devices. For input devices, we don't restore their gain value so far. |
| // TODO(jennyz): crbug.com/417418, track the status for the decison if |
| // we should persist input gain value in prefs. |
| if (!device->is_input) { |
| audio_pref_handler_->SetMuteValue(*device, IsOutputMuted()); |
| SetOutputNodeVolumePercent(node_id, GetOutputVolumePercent()); |
| } |
| } |
| |
| void CrasAudioHandler::InitializeAudioState() { |
| initializing_audio_state_ = true; |
| ApplyAudioPolicy(); |
| |
| // Defer querying cras for GetNodes until cras service becomes available. |
| cras_service_available_ = false; |
| CrasAudioClient::Get()->WaitForServiceToBeAvailable(base::BindOnce( |
| &CrasAudioHandler::InitializeAudioAfterCrasServiceAvailable, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| void CrasAudioHandler::InitializeAudioAfterCrasServiceAvailable( |
| bool service_is_available) { |
| if (!service_is_available) { |
| LOG(ERROR) << "Cras service is not available"; |
| cras_service_available_ = false; |
| return; |
| } |
| |
| cras_service_available_ = true; |
| GetDefaultOutputBufferSizeInternal(); |
| GetSystemAecSupported(); |
| GetSystemAecGroupId(); |
| GetSystemNsSupported(); |
| GetSystemAgcSupported(); |
| RequestNoiseCancellationSupported(base::BindOnce( |
| &CrasAudioHandler::GetNodes, weak_ptr_factory_.GetWeakPtr())); |
| GetNumberOfOutputStreams(); |
| GetNumberOfNonChromeOutputStreams(); |
| GetNumberOfInputStreamsWithPermissionInternal(); |
| CrasAudioClient::Get()->SetFixA2dpPacketSize( |
| base::FeatureList::IsEnabled(features::kBluetoothFixA2dpPacketSize)); |
| |
| // When the BluetoothWbsDogfood feature flag is enabled, don't bother |
| // calling GetDeprioritizeBtWbsMic(). |
| // Otherwise override the Bluetooth WBS mic's priority according to the |
| // |deprioritize_bt_wbs_mic| value returned by CRAS. |
| if (!base::FeatureList::IsEnabled(features::kBluetoothWbsDogfood)) { |
| CrasAudioClient::Get()->GetDeprioritizeBtWbsMic( |
| base::BindOnce(&CrasAudioHandler::HandleGetDeprioritizeBtWbsMic, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| // Sets Floss enabled based on feature flag. |
| CrasAudioClient::Get()->SetFlossEnabled(floss::features::IsFlossEnabled()); |
| |
| input_muted_by_microphone_mute_switch_ = IsMicrophoneMuteSwitchOn(); |
| if (input_muted_by_microphone_mute_switch_) |
| SetInputMute(true, InputMuteChangeMethod::kPhysicalShutter); |
| } |
| |
| void CrasAudioHandler::ApplyAudioPolicy() { |
| bool mute_on = !audio_pref_handler_->GetAudioOutputAllowedValue(); |
| |
| if (output_mute_forced_by_policy_ == mute_on) |
| return; |
| |
| output_mute_forced_by_policy_ = mute_on; |
| UpdateAudioMute(); |
| // Policy for audio input is handled by kAudioCaptureAllowed in the Chrome |
| // media system. |
| } |
| |
| void CrasAudioHandler::UpdateAudioMute() { |
| if (output_mute_forced_by_policy_ || |
| output_mute_forced_by_security_curtain_) { |
| // Mute the device, but do not update the preference. |
| SetOutputMuteInternal(true); |
| } else { |
| // Restore the mute state. |
| const AudioDevice* device = GetDeviceFromId(active_output_node_id_); |
| if (device) |
| SetOutputMuteInternal(audio_pref_handler_->GetMuteValue(*device)); |
| } |
| } |
| |
| void CrasAudioHandler::SetOutputNodeVolume(uint64_t node_id, int volume) { |
| CrasAudioClient::Get()->SetOutputNodeVolume(node_id, volume); |
| } |
| |
| void CrasAudioHandler::SetOutputNodeVolumePercent(uint64_t node_id, |
| int volume_percent) { |
| const AudioDevice* device = GetDeviceFromId(node_id); |
| if (!device || device->is_input) |
| return; |
| |
| volume_percent = min(max(volume_percent, 0), 100); |
| if (volume_percent <= kMuteThresholdPercent) |
| volume_percent = 0; |
| |
| // Save the volume setting in pref in case this is called on non-active |
| // node for configuration. |
| audio_pref_handler_->SetVolumeGainValue(*device, volume_percent); |
| |
| if (device->active) |
| SetOutputNodeVolume(node_id, volume_percent); |
| } |
| |
| bool CrasAudioHandler::SetOutputMuteInternal(bool mute_on) { |
| if (IsOutputForceMuted() && !mute_on) { |
| // Do not allow unmuting if the policy forces the device to remain muted. |
| return false; |
| } |
| |
| output_mute_on_ = mute_on; |
| CrasAudioClient::Get()->SetOutputUserMute(mute_on); |
| return true; |
| } |
| |
| void CrasAudioHandler::SetInputNodeGain(uint64_t node_id, int gain) { |
| CrasAudioClient::Get()->SetInputNodeGain(node_id, gain); |
| } |
| |
| void CrasAudioHandler::SetInputNodeGainPercent(uint64_t node_id, |
| int gain_percent) { |
| const AudioDevice* device = GetDeviceFromId(node_id); |
| if (!device || !device->is_input) |
| return; |
| |
| // NOTE: We do not sanitize input gain values since the range is completely |
| // dependent on the device. |
| |
| audio_pref_handler_->SetVolumeGainValue(*device, gain_percent); |
| |
| if (device->active) { |
| SetInputNodeGain(node_id, gain_percent); |
| } |
| } |
| |
| void CrasAudioHandler::SetInputMuteInternal(bool mute_on) { |
| // Do not allow unmuting the device if hardware microphone mute switch is on. |
| // The switch disables internal microphone, and cras audio handler is expected |
| // to keep system wide cras mute on while the switch is toggled (which should |
| // ensure non-internal audio input devices are kept muted). |
| if (!mute_on && input_muted_by_microphone_mute_switch_) |
| return; |
| |
| input_mute_on_ = mute_on; |
| CrasAudioClient::Get()->SetInputMute(mute_on); |
| } |
| |
| void CrasAudioHandler::GetNodes() { |
| CrasAudioClient::Get()->GetNodes(base::BindOnce( |
| &CrasAudioHandler::HandleGetNodes, weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| void CrasAudioHandler::GetNumberOfNonChromeOutputStreams() { |
| CrasAudioClient::Get()->GetNumberOfNonChromeOutputStreams( |
| base::BindOnce(&CrasAudioHandler::HandleGetNumberOfNonChromeOutputStreams, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| void CrasAudioHandler::GetNumberOfOutputStreams() { |
| CrasAudioClient::Get()->GetNumberOfActiveOutputStreams( |
| base::BindOnce(&CrasAudioHandler::HandleGetNumActiveOutputStreams, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| bool CrasAudioHandler::ChangeActiveDevice( |
| const AudioDevice& new_active_device) { |
| uint64_t& current_active_node_id = new_active_device.is_input |
| ? active_input_node_id_ |
| : active_output_node_id_; |
| // If the device we want to switch to is already the current active device, |
| // do nothing. |
| if (new_active_device.active && |
| new_active_device.id == current_active_node_id) { |
| return false; |
| } |
| |
| bool found_new_active_device = false; |
| // Reset all other input or output devices' active status. The active audio |
| // device from the previous user session can be remembered by cras, but not |
| // in chrome. see crbug.com/273271. |
| for (auto& item : audio_devices_) { |
| AudioDevice& device = item.second; |
| if (device.is_input == new_active_device.is_input && |
| device.id != new_active_device.id) { |
| device.active = false; |
| } else if (device.is_input == new_active_device.is_input && |
| device.id == new_active_device.id) { |
| found_new_active_device = true; |
| } |
| } |
| |
| if (!found_new_active_device) { |
| LOG(ERROR) << "Invalid new active device: " << new_active_device.ToString(); |
| return false; |
| } |
| |
| // Update user priority whenever the audio device is activated. |
| if (base::FeatureList::IsEnabled(features::kRobustAudioDeviceSelectLogic)) { |
| const AudioDevice* current_active_device = |
| GetDeviceFromId(current_active_node_id); |
| audio_pref_handler_->SetUserPriorityHigherThan(new_active_device, |
| current_active_device); |
| } |
| |
| // Set the current active input/output device to the new_active_device. |
| current_active_node_id = new_active_device.id; |
| audio_devices_[current_active_node_id].active = true; |
| return true; |
| } |
| |
| void CrasAudioHandler::SwitchToDevice(const AudioDevice& device, |
| bool notify, |
| DeviceActivateType activate_by) { |
| if (!ChangeActiveDevice(device)) |
| return; |
| |
| if (device.is_input) |
| SetupAudioInputState(); |
| else |
| SetupAudioOutputState(); |
| |
| SetActiveDevice(device, notify, activate_by); |
| |
| // content::MediaStreamManager listens to |
| // base::SystemMonitor::DevicesChangedObserver for audio devices, |
| // and updates EnumerateDevices when OnDevicesChanged is called. |
| base::SystemMonitor* monitor = base::SystemMonitor::Get(); |
| // In some unittest, |monitor| might be nullptr. |
| if (!monitor) |
| return; |
| monitor->ProcessDevicesChanged( |
| base::SystemMonitor::DeviceType::DEVTYPE_AUDIO); |
| } |
| |
| bool CrasAudioHandler::HasDeviceChange(const AudioNodeList& new_nodes, |
| bool is_input, |
| AudioDevicePriorityQueue* new_discovered, |
| bool* device_removed, |
| bool* active_device_removed) { |
| *device_removed = false; |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (is_input != device.is_input) |
| continue; |
| if (!IsDeviceInList(device, new_nodes)) { |
| *device_removed = true; |
| if ((is_input && device.id == active_input_node_id_) || |
| (!is_input && device.id == active_output_node_id_)) { |
| *active_device_removed = true; |
| } |
| } |
| } |
| |
| bool new_or_changed_device = false; |
| while (!new_discovered->empty()) |
| new_discovered->pop(); |
| |
| for (const AudioNode& node : new_nodes) { |
| if (is_input != node.is_input) |
| continue; |
| // Check if the new device is not in the old device list. |
| AudioDevice device = ConvertAudioNodeWithModifiedPriority(node); |
| DeviceStatus status = CheckDeviceStatus(device); |
| if (status == NEW_DEVICE) |
| new_discovered->push(device); |
| if (status == NEW_DEVICE || status == CHANGED_DEVICE) { |
| new_or_changed_device = true; |
| } |
| } |
| return new_or_changed_device || *device_removed; |
| } |
| |
| CrasAudioHandler::DeviceStatus CrasAudioHandler::CheckDeviceStatus( |
| const AudioDevice& device) { |
| const AudioDevice* device_found = |
| GetDeviceFromStableDeviceId(device.stable_device_id); |
| if (!device_found) |
| return NEW_DEVICE; |
| |
| if (!IsSameAudioDevice(device, *device_found)) { |
| LOG(ERROR) << "Different Audio devices with same stable device id:" |
| << " new device: " << device.ToString() |
| << " old device: " << device_found->ToString(); |
| return CHANGED_DEVICE; |
| } |
| if (device.active != device_found->active) |
| return CHANGED_DEVICE; |
| return OLD_DEVICE; |
| } |
| |
| void CrasAudioHandler::NotifyActiveNodeChanged(bool is_input) { |
| if (is_input) { |
| for (auto& observer : observers_) |
| observer.OnActiveInputNodeChanged(); |
| } else { |
| for (auto& observer : observers_) |
| observer.OnActiveOutputNodeChanged(); |
| } |
| } |
| |
| bool CrasAudioHandler::GetActiveDeviceFromUserPref(bool is_input, |
| AudioDevice* active_device) { |
| bool found_active_device = false; |
| bool last_active_device_activate_by_user = false; |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (device.is_input != is_input || !device.is_for_simple_usage()) |
| continue; |
| |
| bool active = false; |
| bool activate_by_user = false; |
| // If the device entry is not found in prefs, it is likley a new audio |
| // device plugged in after the cros is powered down. We should ignore the |
| // previously saved active device, and select the active device by priority. |
| // crbug.com/622045. |
| if (!audio_pref_handler_->GetDeviceActive(device, &active, |
| &activate_by_user)) { |
| return false; |
| } |
| |
| if (!active) |
| continue; |
| |
| if (!found_active_device) { |
| found_active_device = true; |
| *active_device = device; |
| last_active_device_activate_by_user = activate_by_user; |
| continue; |
| } |
| |
| // Choose the best one among multiple active devices from prefs. |
| if (activate_by_user) { |
| if (last_active_device_activate_by_user) { |
| // If there are more than one active devices activated by user in the |
| // prefs, most likely, after the device was shut down, and before it |
| // is rebooted, user has plugged in some previously unplugged audio |
| // devices. For such case, it does not make sense to honor the active |
| // states in the prefs. |
| VLOG(1) << "Found more than one user activated devices in the prefs."; |
| return false; |
| } |
| // Device activated by user has higher priority than the one |
| // is not activated by user. |
| *active_device = device; |
| last_active_device_activate_by_user = true; |
| } else if (!last_active_device_activate_by_user) { |
| // If there are more than one active devices activated by priority in the |
| // prefs, most likely, cras is still enumerating the audio devices |
| // progressively. For such case, it does not make sense to honor the |
| // active states in the prefs. |
| VLOG(1) << "Found more than one active devices by priority in the prefs."; |
| return false; |
| } |
| } |
| |
| if (found_active_device && !active_device->is_for_simple_usage()) { |
| // This is an odd case which is rare but possible to happen during cras |
| // initialization depeneding the audio device enumation process. The only |
| // audio node coming from cras is an internal audio device not visible |
| // to user, such as AudioDeviceType::kPostMixLoopback. |
| return false; |
| } |
| |
| return found_active_device; |
| } |
| |
| void CrasAudioHandler::PauseAllStreams() { |
| if (media_controller_manager_) |
| media_controller_manager_->SuspendAllSessions(); |
| } |
| |
| void CrasAudioHandler::HandleNonHotplugNodesChange( |
| bool is_input, |
| const AudioDevicePriorityQueue& hotplug_devices, |
| bool has_device_change, |
| bool has_device_removed, |
| bool active_device_removed) { |
| bool has_current_active_node = |
| is_input ? active_input_node_id_ : active_output_node_id_; |
| |
| // No device change, extra NodesChanged signal received. |
| if (!has_device_change && has_current_active_node) |
| return; |
| |
| if (hotplug_devices.empty()) { |
| if (has_device_removed) { |
| if (!active_device_removed && has_current_active_node) { |
| // Removed a non-active device, keep the current active device. |
| return; |
| } |
| |
| if (active_device_removed) { |
| // Pauses active streams when the active output device is |
| // removed. |
| if (!is_input) |
| PauseAllStreams(); |
| |
| // Unplugged the current active device. |
| SwitchToTopPriorityDevice(is_input); |
| |
| return; |
| } |
| } |
| |
| // Some unexpected error happens on cras side. See crbug.com/586026. |
| // Either cras sent stale nodes to chrome again or cras triggered some |
| // error. Restore the previously selected active. |
| VLOG(1) << "Odd case from cras, the active node is lost unexpectedly."; |
| SwitchToPreviousActiveDeviceIfAvailable(is_input); |
| } else { |
| // Looks like a new chrome session starts. |
| SwitchToPreviousActiveDeviceIfAvailable(is_input); |
| } |
| } |
| |
| bool CrasAudioHandler::ShouldSwitchToHotPlugDevice( |
| const AudioDevice& hotplug_device) const { |
| // Whenever 35mm headphone or mic is hot plugged, always pick it as the active |
| // device. |
| if (hotplug_device.type == AudioDeviceType::kHeadphone || |
| hotplug_device.type == AudioDeviceType::kMic) { |
| return true; |
| } |
| |
| const uint64_t active_node_id = |
| hotplug_device.is_input ? active_input_node_id_ : active_output_node_id_; |
| const AudioDevice* current_active_device = GetDeviceFromId(active_node_id); |
| |
| if (!current_active_device) { |
| return true; |
| } |
| |
| // Use built-in priority if hotplug_device or current_active_device has |
| // kUserPriorityNone. Otherwise the newly plugged devices will never be |
| // selected due to having user_priority = 0. |
| // current_active_device can has kUserPriorityNone, if it is a new device |
| // and it is activated when there is no active device (ex: the first active |
| // device after boot). |
| if ((hotplug_device.user_priority == kUserPriorityNone || |
| current_active_device->user_priority == kUserPriorityNone)) { |
| return LessBuiltInPriority(*current_active_device, hotplug_device); |
| } |
| |
| return LessUserPriority(*current_active_device, hotplug_device); |
| } |
| |
| void CrasAudioHandler::HandleHotPlugDeviceByUserPriority( |
| const AudioDevice& hotplug_device) { |
| // This most likely may happen during the transition period of cras |
| // initialization phase, in which a non-simple-usage node may appear like |
| // a hotplug node. |
| if (!hotplug_device.is_for_simple_usage()) |
| return; |
| |
| if (ShouldSwitchToHotPlugDevice(hotplug_device)) { |
| SwitchToDevice(hotplug_device, true, ACTIVATE_BY_PRIORITY); |
| return; |
| } |
| |
| // Do not active the hotplug device. The hotplug device is not the top |
| // priority device. |
| VLOG(1) << "Hotplug device remains inactive as its previous state:" |
| << hotplug_device.ToString(); |
| } |
| |
| void CrasAudioHandler::HandleHotPlugDevice( |
| const AudioDevice& hotplug_device, |
| const AudioDevicePriorityQueue& device_priority_queue) { |
| if (base::FeatureList::IsEnabled(features::kRobustAudioDeviceSelectLogic)) { |
| return HandleHotPlugDeviceByUserPriority(hotplug_device); |
| } |
| |
| // This most likely may happen during the transition period of cras |
| // initialization phase, in which a non-simple-usage node may appear like |
| // a hotplug node. |
| if (!hotplug_device.is_for_simple_usage()) |
| return; |
| |
| // Whenever 35mm headphone or mic is hot plugged, always pick it as the active |
| // device. |
| if (hotplug_device.type == AudioDeviceType::kHeadphone || |
| hotplug_device.type == AudioDeviceType::kMic) { |
| SwitchToDevice(hotplug_device, true, ACTIVATE_BY_PRIORITY); |
| return; |
| } |
| |
| bool last_state_active = false; |
| bool last_activate_by_user = false; |
| if (!audio_pref_handler_->GetDeviceActive(hotplug_device, &last_state_active, |
| &last_activate_by_user)) { |
| // |hotplug_device| is plugged in for the first time, activate it if it |
| // is of the highest priority. |
| if (device_priority_queue.top().id == hotplug_device.id) { |
| VLOG(1) << "Hotplug a device for the first time: " |
| << hotplug_device.ToString(); |
| SwitchToDevice(hotplug_device, true, ACTIVATE_BY_PRIORITY); |
| } |
| } else if (last_state_active) { |
| if (!last_activate_by_user && |
| device_priority_queue.top().id != hotplug_device.id) { |
| // This handles crbug.com/698809. Before the device is powered off, unplug |
| // the external output device, leave the internal audio device(such as |
| // internal speaker) active. Then turn off the power, plug in the exteranl |
| // device, turn on power. On some device, cras sends NodesChanged first |
| // signal with only external device; then later it sends another |
| // NodesChanged signal with internal audio device also discovered. |
| // For such case, do not switch to the lower priority device which was |
| // made active not by user's choice. |
| return; |
| } |
| |
| SwitchToDevice(hotplug_device, true, ACTIVATE_BY_RESTORE_PREVIOUS_STATE); |
| } else { |
| // The hot plugged device was not active last time it was plugged in. |
| // Let's check how the current active device is activated, if it is not |
| // activated by user choice, then select the hot plugged device it is of |
| // higher priority. |
| uint64_t& active_node_id = hotplug_device.is_input ? active_input_node_id_ |
| : active_output_node_id_; |
| const AudioDevice* active_device = GetDeviceFromId(active_node_id); |
| if (!active_device) { |
| // Can't find any current active device. |
| // This is an odd case, but if it happens, switch to hotplug device. |
| LOG(ERROR) << "Can not find current active device when the device is" |
| << " hot plugged: " << hotplug_device.ToString(); |
| SwitchToDevice(hotplug_device, true, ACTIVATE_BY_PRIORITY); |
| return; |
| } |
| |
| bool activate_by_user = false; |
| bool state_active = false; |
| bool found_active_state = audio_pref_handler_->GetDeviceActive( |
| *active_device, &state_active, &activate_by_user); |
| DCHECK(found_active_state && state_active); |
| if (!found_active_state || !state_active) { |
| LOG(ERROR) << "Cannot retrieve current active device's state in prefs: " |
| << active_device->ToString(); |
| return; |
| } |
| if (!activate_by_user && |
| device_priority_queue.top().id == hotplug_device.id) { |
| SwitchToDevice(hotplug_device, true, ACTIVATE_BY_PRIORITY); |
| } else { |
| // Do not active the hotplug device. Either the current device is |
| // expliciltly activated by user, or the hotplug device is of lower |
| // priority. |
| VLOG(1) << "Hotplug device remains inactive as its previous state:" |
| << hotplug_device.ToString(); |
| } |
| } |
| } |
| |
| void CrasAudioHandler::SwitchToTopPriorityDevice(bool is_input) { |
| AudioDevice top_device = |
| is_input ? input_devices_pq_.top() : output_devices_pq_.top(); |
| if (!top_device.is_for_simple_usage()) |
| return; |
| |
| // For the dual camera and dual microphone case, choose microphone |
| // that is consistent to the active camera. |
| if (IsFrontOrRearMic(top_device) && HasDualInternalMic() && IsCameraOn()) { |
| ActivateInternalMicForActiveCamera(); |
| return; |
| } |
| |
| SwitchToDevice(top_device, true, ACTIVATE_BY_PRIORITY); |
| } |
| |
| void CrasAudioHandler::SwitchToPreviousActiveDeviceIfAvailable(bool is_input) { |
| AudioDevice previous_active_device; |
| if (GetActiveDeviceFromUserPref(is_input, &previous_active_device)) { |
| DCHECK(previous_active_device.is_for_simple_usage()); |
| // Switch to previous active device stored in user prefs. |
| SwitchToDevice(previous_active_device, true, |
| ACTIVATE_BY_RESTORE_PREVIOUS_STATE); |
| } else { |
| // No previous active device, switch to the top priority device. |
| SwitchToTopPriorityDevice(is_input); |
| } |
| } |
| |
| void CrasAudioHandler::UpdateDevicesAndSwitchActive( |
| const AudioNodeList& nodes) { |
| AudioDevicePriorityQueue hotplug_output_devices; |
| AudioDevicePriorityQueue hotplug_input_devices; |
| bool has_output_removed = false; |
| bool has_input_removed = false; |
| bool active_output_removed = false; |
| bool active_input_removed = false; |
| bool output_devices_changed = |
| HasDeviceChange(nodes, false, &hotplug_output_devices, |
| &has_output_removed, &active_output_removed); |
| bool input_devices_changed = |
| HasDeviceChange(nodes, true, &hotplug_input_devices, &has_input_removed, |
| &active_input_removed); |
| |
| std::vector<AudioDevice> devices; |
| devices.reserve(nodes.size()); |
| for (AudioNode node : nodes) { |
| devices.push_back(ConvertAudioNodeWithModifiedPriority(node)); |
| } |
| |
| // Updates the display_rotation to the internal speaker when it's added. |
| for (AudioDevice device : devices) { |
| DeviceStatus status = CheckDeviceStatus(device); |
| if (status == NEW_DEVICE && |
| device.type == AudioDeviceType::kInternalSpeaker) { |
| CrasAudioClient::Get()->SetDisplayRotation(device.id, display_rotation_); |
| } |
| } |
| |
| // Remove the least recently seen devices if there are too many devices. |
| audio_pref_handler_->DropLeastRecentlySeenDevices(devices, |
| kMaxDeviceStoredInPref); |
| |
| audio_devices_.clear(); |
| has_alternative_input_ = false; |
| has_alternative_output_ = false; |
| |
| while (!input_devices_pq_.empty()) |
| input_devices_pq_.pop(); |
| while (!output_devices_pq_.empty()) |
| output_devices_pq_.pop(); |
| |
| for (AudioDevice device : devices) { |
| audio_devices_[device.id] = device; |
| if (!has_alternative_input_ && device.is_input && |
| device.IsExternalDevice()) { |
| has_alternative_input_ = true; |
| } else if (!has_alternative_output_ && !device.is_input && |
| device.IsExternalDevice()) { |
| has_alternative_output_ = true; |
| } |
| |
| if (device.is_input) { |
| input_devices_pq_.push(device); |
| } else { |
| output_devices_pq_.push(device); |
| } |
| } |
| |
| // Handle output device changes. |
| HandleAudioDeviceChange(false, output_devices_pq_, hotplug_output_devices, |
| output_devices_changed, has_output_removed, |
| active_output_removed); |
| |
| // Handle input device changes. |
| HandleAudioDeviceChange(true, input_devices_pq_, hotplug_input_devices, |
| input_devices_changed, has_input_removed, |
| active_input_removed); |
| |
| // content::MediaStreamManager listens to |
| // base::SystemMonitor::DevicesChangedObserver for audio devices, |
| // and updates EnumerateDevices when OnDevicesChanged is called. |
| base::SystemMonitor* monitor = base::SystemMonitor::Get(); |
| // In some unittest, |monitor| might be nullptr. |
| if (!monitor) |
| return; |
| monitor->ProcessDevicesChanged( |
| base::SystemMonitor::DeviceType::DEVTYPE_AUDIO); |
| } |
| |
| void CrasAudioHandler::HandleAudioDeviceChange( |
| bool is_input, |
| const AudioDevicePriorityQueue& devices_pq, |
| const AudioDevicePriorityQueue& hotplug_devices, |
| bool has_device_change, |
| bool has_device_removed, |
| bool active_device_removed) { |
| uint64_t& active_node_id = |
| is_input ? active_input_node_id_ : active_output_node_id_; |
| |
| if (has_device_change) { |
| // Mark device selected by the system, including when the algorithm |
| // does nothing ultimately. We still treat not switching the device |
| // as a decision of the algorithm. |
| if (is_input) { |
| input_device_selected_by_user_ = false; |
| } else { |
| output_device_selected_by_user_ = false; |
| } |
| } |
| |
| // No audio devices found. |
| if (devices_pq.empty()) { |
| VLOG(1) << "No " << (is_input ? "input" : "output") << " devices found"; |
| active_node_id = 0; |
| NotifyActiveNodeChanged(is_input); |
| return; |
| } |
| |
| // If the previous active device is removed from the new node list, |
| // or changed to inactive by cras, reset active_node_id. |
| // See crbug.com/478968. |
| const AudioDevice* active_device = GetDeviceFromId(active_node_id); |
| if (!active_device || !active_device->active) |
| active_node_id = 0; |
| |
| if (!active_node_id || hotplug_devices.empty() || |
| hotplug_devices.size() > 1) { |
| HandleNonHotplugNodesChange(is_input, hotplug_devices, has_device_change, |
| has_device_removed, active_device_removed); |
| } else { |
| // Typical user hotplug case. |
| HandleHotPlugDevice(hotplug_devices.top(), devices_pq); |
| } |
| } |
| |
| void CrasAudioHandler::HandleGetNodes(absl::optional<AudioNodeList> node_list) { |
| if (!node_list.has_value()) { |
| LOG(ERROR) << "Failed to retrieve audio nodes data"; |
| return; |
| } |
| |
| if (node_list->empty()) |
| return; |
| |
| UpdateDevicesAndSwitchActive(node_list.value()); |
| |
| // Always set the input noise cancellation state on NodesChange event. |
| RefreshNoiseCancellationState(); |
| |
| for (auto& observer : observers_) |
| observer.OnAudioNodesChanged(); |
| } |
| |
| void CrasAudioHandler::HandleGetNumberOfNonChromeOutputStreams( |
| absl::optional<int32_t> new_output_streams_count) { |
| if (!new_output_streams_count.has_value()) { |
| LOG(ERROR) << "Failed to retrieve number of active output streams."; |
| return; |
| } |
| DCHECK_GE(*new_output_streams_count, 0); |
| |
| if (*new_output_streams_count > 0 && |
| num_active_nonchrome_output_streams_ == 0) { |
| for (auto& observer : observers_) { |
| observer.OnNonChromeOutputStarted(); |
| } |
| } else if (*new_output_streams_count == 0 && |
| num_active_nonchrome_output_streams_ > 0) { |
| for (auto& observer : observers_) { |
| observer.OnNonChromeOutputStopped(); |
| } |
| } |
| num_active_nonchrome_output_streams_ = *new_output_streams_count; |
| } |
| |
| void CrasAudioHandler::HandleGetNumActiveOutputStreams( |
| absl::optional<int> new_output_streams_count) { |
| if (!new_output_streams_count.has_value()) { |
| LOG(ERROR) << "Failed to retrieve number of active output streams"; |
| return; |
| } |
| |
| DCHECK_GE(*new_output_streams_count, 0); |
| if (*new_output_streams_count > 0 && num_active_output_streams_ == 0) { |
| for (auto& observer : observers_) |
| observer.OnOutputStarted(); |
| } else if (*new_output_streams_count == 0 && num_active_output_streams_ > 0) { |
| for (auto& observer : observers_) |
| observer.OnOutputStopped(); |
| } |
| num_active_output_streams_ = *new_output_streams_count; |
| } |
| |
| void CrasAudioHandler::HandleGetDeprioritizeBtWbsMic( |
| absl::optional<bool> deprioritize_bt_wbs_mic) { |
| if (!deprioritize_bt_wbs_mic.has_value()) { |
| LOG(ERROR) << "Failed to retrieve WBS mic deprioritized flag"; |
| return; |
| } |
| deprioritize_bt_wbs_mic_ = *deprioritize_bt_wbs_mic; |
| } |
| |
| void CrasAudioHandler::AddAdditionalActiveNode(uint64_t node_id, bool notify) { |
| const AudioDevice* device = GetDeviceFromId(node_id); |
| if (!device) { |
| VLOG(1) << "AddActiveInputNode: Cannot find device id=" |
| << "0x" << std::hex << node_id; |
| return; |
| } |
| |
| audio_devices_[node_id].active = true; |
| SetupAdditionalActiveAudioNodeState(node_id); |
| |
| if (device->is_input) { |
| DCHECK(node_id != active_input_node_id_); |
| CrasAudioClient::Get()->AddActiveInputNode(node_id); |
| if (notify) |
| NotifyActiveNodeChanged(true); |
| } else { |
| DCHECK(node_id != active_output_node_id_); |
| CrasAudioClient::Get()->AddActiveOutputNode(node_id); |
| if (notify) |
| NotifyActiveNodeChanged(false); |
| } |
| } |
| |
| void CrasAudioHandler::RemoveActiveNodeInternal(uint64_t node_id, bool notify) { |
| const AudioDevice* device = GetDeviceFromId(node_id); |
| if (!device) { |
| VLOG(1) << "RemoveActiveInputNode: Cannot find device id=" |
| << "0x" << std::hex << node_id; |
| return; |
| } |
| |
| audio_devices_[node_id].active = false; |
| if (device->is_input) { |
| if (node_id == active_input_node_id_) |
| active_input_node_id_ = 0; |
| CrasAudioClient::Get()->RemoveActiveInputNode(node_id); |
| if (notify) |
| NotifyActiveNodeChanged(true); |
| } else { |
| if (node_id == active_output_node_id_) |
| active_output_node_id_ = 0; |
| CrasAudioClient::Get()->RemoveActiveOutputNode(node_id); |
| if (notify) |
| NotifyActiveNodeChanged(false); |
| } |
| } |
| |
| void CrasAudioHandler::UpdateAudioAfterHDMIRediscoverGracePeriod() { |
| VLOG(1) << "HDMI output re-discover grace period ends."; |
| hdmi_rediscovering_ = false; |
| if (!IsOutputMutedForDevice(active_output_node_id_)) { |
| // Unmute the audio output after the HDMI transition period. |
| VLOG(1) << "Unmute output after HDMI rediscovering grace period."; |
| SetOutputMuteInternal(false); |
| |
| // Notify UI about the mute state change. |
| for (auto& observer : observers_) |
| observer.OnOutputMuteChanged(output_mute_on_); |
| } |
| } |
| |
| bool CrasAudioHandler::IsHDMIPrimaryOutputDevice() const { |
| const AudioDevice* device = GetDeviceFromId(active_output_node_id_); |
| return device && device->type == AudioDeviceType::kHdmi; |
| } |
| |
| void CrasAudioHandler::StartHDMIRediscoverGracePeriod() { |
| VLOG(1) << "Start HDMI rediscovering grace period."; |
| hdmi_rediscovering_ = true; |
| hdmi_rediscover_timer_.Stop(); |
| hdmi_rediscover_timer_.Start( |
| FROM_HERE, |
| base::Milliseconds(hdmi_rediscover_grace_period_duration_in_ms_), this, |
| &CrasAudioHandler::UpdateAudioAfterHDMIRediscoverGracePeriod); |
| } |
| |
| void CrasAudioHandler::SetHDMIRediscoverGracePeriodForTesting( |
| int duration_in_ms) { |
| hdmi_rediscover_grace_period_duration_in_ms_ = duration_in_ms; |
| } |
| |
| void CrasAudioHandler::ActivateMicForCamera( |
| media::VideoFacingMode camera_facing) { |
| const AudioDevice* mic = GetMicForCamera(camera_facing); |
| if (!mic || mic->active) |
| return; |
| |
| SwitchToDevice(*mic, true, ACTIVATE_BY_CAMERA); |
| } |
| |
| void CrasAudioHandler::ActivateInternalMicForActiveCamera() { |
| DCHECK(IsCameraOn()); |
| if (HasDualInternalMic()) { |
| media::VideoFacingMode facing = front_camera_on_ |
| ? media::MEDIA_VIDEO_FACING_USER |
| : media::MEDIA_VIDEO_FACING_ENVIRONMENT; |
| ActivateMicForCamera(facing); |
| } |
| } |
| |
| // For the dual microphone case, from user point of view, they only see internal |
| // microphone in UI. Chrome will make the best decision on which one to pick. |
| // If the camera is off, the front microphone should be picked as the default |
| // active microphone. Otherwise, it will switch to the microphone that |
| // matches the active camera, i.e. front microphone for front camera and |
| // rear microphone for rear camera. |
| void CrasAudioHandler::SwitchToFrontOrRearMic() { |
| DCHECK(HasDualInternalMic()); |
| if (IsCameraOn()) { |
| ActivateInternalMicForActiveCamera(); |
| } else { |
| SwitchToDevice(*GetDeviceByType(AudioDeviceType::kFrontMic), true, |
| ACTIVATE_BY_USER); |
| } |
| } |
| |
| const AudioDevice* CrasAudioHandler::GetMicForCamera( |
| media::VideoFacingMode camera_facing) { |
| switch (camera_facing) { |
| case media::MEDIA_VIDEO_FACING_USER: |
| return GetDeviceByType(AudioDeviceType::kFrontMic); |
| case media::MEDIA_VIDEO_FACING_ENVIRONMENT: |
| return GetDeviceByType(AudioDeviceType::kRearMic); |
| default: |
| NOTREACHED(); |
| } |
| return nullptr; |
| } |
| |
| bool CrasAudioHandler::HasDualInternalMic() const { |
| bool has_front_mic = false; |
| bool has_rear_mic = false; |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (device.type == AudioDeviceType::kFrontMic) |
| has_front_mic = true; |
| else if (device.type == AudioDeviceType::kRearMic) |
| has_rear_mic = true; |
| if (has_front_mic && has_rear_mic) |
| break; |
| } |
| return has_front_mic && has_rear_mic; |
| } |
| |
| bool CrasAudioHandler::HasActiveInputDeviceForSimpleUsage() const { |
| const AudioDevice* active_input_device = |
| GetDeviceFromId(active_input_node_id_); |
| if (active_input_device) { |
| return active_input_device->is_for_simple_usage(); |
| } |
| return false; |
| } |
| |
| bool CrasAudioHandler::IsFrontOrRearMic(const AudioDevice& device) const { |
| return device.is_input && (device.type == AudioDeviceType::kFrontMic || |
| device.type == AudioDeviceType::kRearMic); |
| } |
| |
| bool CrasAudioHandler::IsCameraOn() const { |
| return front_camera_on_ || rear_camera_on_; |
| } |
| |
| bool CrasAudioHandler::HasExternalDevice(bool is_input) const { |
| for (const auto& item : audio_devices_) { |
| const AudioDevice& device = item.second; |
| if (is_input == device.is_input && device.IsExternalDevice()) |
| return true; |
| } |
| return false; |
| } |
| |
| void CrasAudioHandler::GetNumberOfInputStreamsWithPermissionInternal() { |
| CrasAudioClient::Get()->GetNumberOfInputStreamsWithPermission(base::BindOnce( |
| &CrasAudioHandler::HandleGetNumberOfInputStreamsWithPermission, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| // static |
| CrasAudioHandler::ClientType CrasAudioHandler::ConvertClientTypeStringToEnum( |
| std::string client_type_str) { |
| if (client_type_str == "CRAS_CLIENT_TYPE_PLUGIN") { |
| return ClientType::VM_PLUGIN; |
| } else if (client_type_str == "CRAS_CLIENT_TYPE_CROSVM") { |
| return ClientType::VM_TERMINA; |
| } else if (client_type_str == "CRAS_CLIENT_TYPE_CHROME") { |
| return ClientType::CHROME; |
| } else if (client_type_str == "CRAS_CLIENT_TYPE_ARC" || |
| client_type_str == "CRAS_CLIENT_TYPE_ARCVM") { |
| return ClientType::ARC; |
| } else if (client_type_str == "CRAS_CLIENT_TYPE_BOREALIS") { |
| return ClientType::VM_BOREALIS; |
| } else if (client_type_str == "CRAS_CLIENT_TYPE_LACROS") { |
| return ClientType::LACROS; |
| } else { |
| return ClientType::UNKNOWN; |
| } |
| } |
| |
| void CrasAudioHandler::HandleGetNumberOfInputStreamsWithPermission( |
| absl::optional<base::flat_map<std::string, uint32_t>> num_input_streams) { |
| if (!num_input_streams.has_value()) { |
| LOG(ERROR) << "Failed to retrieve number of input streams with permission"; |
| return; |
| } |
| number_of_input_streams_with_permission_.clear(); |
| for (const auto& it : *num_input_streams) { |
| CrasAudioHandler::ClientType type = ConvertClientTypeStringToEnum(it.first); |
| if (type != ClientType::UNKNOWN) { |
| number_of_input_streams_with_permission_[type] = it.second; |
| } |
| } |
| } |
| |
| void CrasAudioHandler::GetDefaultOutputBufferSizeInternal() { |
| CrasAudioClient::Get()->GetDefaultOutputBufferSize( |
| base::BindOnce(&CrasAudioHandler::HandleGetDefaultOutputBufferSize, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| void CrasAudioHandler::HandleGetDefaultOutputBufferSize( |
| absl::optional<int> buffer_size) { |
| if (!buffer_size.has_value()) { |
| LOG(ERROR) << "Failed to retrieve output buffer size"; |
| return; |
| } |
| |
| default_output_buffer_size_ = buffer_size.value(); |
| } |
| |
| bool CrasAudioHandler::noise_cancellation_supported() const { |
| return noise_cancellation_supported_; |
| } |
| |
| bool CrasAudioHandler::system_aec_supported() const { |
| DCHECK(main_task_runner_->BelongsToCurrentThread()); |
| return system_aec_supported_; |
| } |
| |
| // GetSystemAecSupported() is only called in the same thread |
| // as the CrasAudioHandler constructor. We are safe here without |
| // thread check, because unittest may not have the task runner |
| // for the current thread. |
| void CrasAudioHandler::GetSystemAecSupported() { |
| CrasAudioClient::Get()->GetSystemAecSupported( |
| base::BindOnce(&CrasAudioHandler::HandleGetSystemAecSupported, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| void CrasAudioHandler::HandleGetSystemAecSupported( |
| absl::optional<bool> system_aec_supported) { |
| if (!system_aec_supported.has_value()) { |
| LOG(ERROR) << "Failed to retrieve system aec supported"; |
| return; |
| } |
| system_aec_supported_ = system_aec_supported.value(); |
| } |
| |
| int32_t CrasAudioHandler::system_aec_group_id() const { |
| DCHECK(main_task_runner_->BelongsToCurrentThread()); |
| return system_aec_group_id_; |
| } |
| |
| // GetSystemAecGroupId() is only called in the same thread |
| // as the CrasAudioHandler constructor. We are safe here without |
| // thread check, because unittest may not have the task runner |
| // for the current thread. |
| void CrasAudioHandler::GetSystemAecGroupId() { |
| CrasAudioClient::Get()->GetSystemAecGroupId( |
| base::BindOnce(&CrasAudioHandler::HandleGetSystemAecGroupId, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| void CrasAudioHandler::HandleGetSystemAecGroupId( |
| absl::optional<int32_t> system_aec_group_id) { |
| if (!system_aec_group_id.has_value()) { |
| // If the group Id is not available, set the ID to reflect that. |
| system_aec_group_id_ = kSystemAecGroupIdNotAvailable; |
| return; |
| } |
| system_aec_group_id_ = system_aec_group_id.value(); |
| } |
| |
| bool CrasAudioHandler::system_ns_supported() const { |
| DCHECK(main_task_runner_->BelongsToCurrentThread()); |
| return system_ns_supported_; |
| } |
| |
| // GetSystemNsSupported() is only called in the same thread |
| // as the CrasAudioHandler constructor. We are safe here without |
| // thread check, because unittest may not have the task runner |
| // for the current thread. |
| void CrasAudioHandler::GetSystemNsSupported() { |
| CrasAudioClient::Get()->GetSystemNsSupported( |
| base::BindOnce(&CrasAudioHandler::HandleGetSystemNsSupported, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| void CrasAudioHandler::HandleGetSystemNsSupported( |
| absl::optional<bool> system_ns_supported) { |
| if (!system_ns_supported.has_value()) { |
| LOG(ERROR) << "Failed to retrieve system ns supported"; |
| return; |
| } |
| system_ns_supported_ = system_ns_supported.value(); |
| } |
| |
| bool CrasAudioHandler::system_agc_supported() const { |
| DCHECK(main_task_runner_->BelongsToCurrentThread()); |
| return system_agc_supported_; |
| } |
| |
| // GetSystemAgcSupported() is only called in the same thread |
| // as the CrasAudioHandler constructor. We are safe here without |
| // thread check, because unittest may not have the task runner |
| // for the current thread. |
| void CrasAudioHandler::GetSystemAgcSupported() { |
| CrasAudioClient::Get()->GetSystemAgcSupported( |
| base::BindOnce(&CrasAudioHandler::HandleGetSystemAgcSupported, |
| weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| void CrasAudioHandler::HandleGetSystemAgcSupported( |
| absl::optional<bool> system_agc_supported) { |
| if (!system_agc_supported.has_value()) { |
| LOG(ERROR) << "Failed to retrieve system agc supported"; |
| return; |
| } |
| system_agc_supported_ = system_agc_supported.value(); |
| } |
| |
| ScopedCrasAudioHandlerForTesting::ScopedCrasAudioHandlerForTesting() { |
| CHECK(!CrasAudioClient::Get()) |
| << "ScopedCrasAudioHandlerForTesting expects that there is no " |
| "CrasAudioClient running at its constructor."; |
| |
| fake_cras_audio_client_ = std::make_unique<FakeCrasAudioClient>(); |
| |
| CrasAudioHandler::InitializeForTesting(); |
| } |
| |
| ScopedCrasAudioHandlerForTesting::~ScopedCrasAudioHandlerForTesting() { |
| CrasAudioHandler::Shutdown(); |
| } |
| |
| CrasAudioHandler& ScopedCrasAudioHandlerForTesting::Get() { |
| return *CrasAudioHandler::Get(); |
| } |
| |
| } // namespace ash |