/* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef ANDROID_AUDIOPOLICYSERVICE_H #define ANDROID_AUDIOPOLICYSERVICE_H #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "AudioPolicyEffects.h" #include "CaptureStateNotifier.h" #include "Spatializer.h" #include #include #include #include namespace android { using content::AttributionSourceState; using media::audio::common::AudioConfig; using media::audio::common::AudioConfigBase; using media::audio::common::AudioDevice; using media::audio::common::AudioDeviceDescription; using media::audio::common::AudioFormatDescription; using media::audio::common::AudioMode; using media::audio::common::AudioSource; using media::audio::common::AudioStreamType; using media::audio::common::AudioUsage; using media::audio::common::AudioUuid; using media::audio::common::Int; // ---------------------------------------------------------------------------- namespace media::audiopolicy { class AudioRecordClient; } using ::android::media::audiopolicy::AudioRecordClient; using ::com::android::media::permission::INativePermissionController; using ::com::android::media::permission::NativePermissionController; using ::com::android::media::permission::IPermissionProvider; class AudioPolicyService : public BinderService, public media::BnAudioPolicyService, public IBinder::DeathRecipient, public SpatializerPolicyCallback, public media::IAudioPolicyServiceLocal { friend class sp; public: // for BinderService static const char *getServiceName() ANDROID_API { return "media.audio_policy"; } virtual status_t dump(int fd, const Vector& args); // // BnAudioPolicyService (see AudioPolicyInterface for method descriptions) // binder::Status onNewAudioModulesAvailable() override; binder::Status setDeviceConnectionState( media::AudioPolicyDeviceState state, const android::media::audio::common::AudioPort& port, const AudioFormatDescription& encodedFormat) override; binder::Status getDeviceConnectionState(const AudioDevice& device, media::AudioPolicyDeviceState* _aidl_return) override; binder::Status handleDeviceConfigChange( const AudioDevice& device, const std::string& deviceName, const AudioFormatDescription& encodedFormat) override; binder::Status setPhoneState(AudioMode state, int32_t uid) override; binder::Status setForceUse(media::AudioPolicyForceUse usage, media::AudioPolicyForcedConfig config) override; binder::Status getForceUse(media::AudioPolicyForceUse usage, media::AudioPolicyForcedConfig* _aidl_return) override; binder::Status getOutput(AudioStreamType stream, int32_t* _aidl_return) override; binder::Status getOutputForAttr(const media::audio::common::AudioAttributes& attr, int32_t session, const AttributionSourceState &attributionSource, const AudioConfig& config, int32_t flags, int32_t selectedDeviceId, media::GetOutputForAttrResponse* _aidl_return) override; binder::Status startOutput(int32_t portId) override; binder::Status stopOutput(int32_t portId) override; binder::Status releaseOutput(int32_t portId) override; binder::Status getInputForAttr(const media::audio::common::AudioAttributes& attr, int32_t input, int32_t riid, int32_t session, const AttributionSourceState &attributionSource, const AudioConfigBase& config, int32_t flags, int32_t selectedDeviceId, media::GetInputForAttrResponse* _aidl_return) override; binder::Status startInput(int32_t portId) override; binder::Status stopInput(int32_t portId) override; binder::Status releaseInput(int32_t portId) override; binder::Status setDeviceAbsoluteVolumeEnabled(const AudioDevice& device, bool enabled, AudioStreamType streamToDriveAbs) override; binder::Status initStreamVolume(AudioStreamType stream, int32_t indexMin, int32_t indexMax) override; binder::Status setStreamVolumeIndex(AudioStreamType stream, const AudioDeviceDescription& device, int32_t index) override; binder::Status getStreamVolumeIndex(AudioStreamType stream, const AudioDeviceDescription& device, int32_t* _aidl_return) override; binder::Status setVolumeIndexForAttributes(const media::audio::common::AudioAttributes& attr, const AudioDeviceDescription& device, int32_t index) override; binder::Status getVolumeIndexForAttributes(const media::audio::common::AudioAttributes& attr, const AudioDeviceDescription& device, int32_t* _aidl_return) override; binder::Status getMaxVolumeIndexForAttributes(const media::audio::common::AudioAttributes& attr, int32_t* _aidl_return) override; binder::Status getMinVolumeIndexForAttributes(const media::audio::common::AudioAttributes& attr, int32_t* _aidl_return) override; binder::Status getStrategyForStream(AudioStreamType stream, int32_t* _aidl_return) override; binder::Status getDevicesForAttributes(const media::audio::common::AudioAttributes& attr, bool forVolume, std::vector* _aidl_return) override; binder::Status getOutputForEffect(const media::EffectDescriptor& desc, int32_t* _aidl_return) override; binder::Status registerEffect(const media::EffectDescriptor& desc, int32_t io, int32_t strategy, int32_t session, int32_t id) override; binder::Status unregisterEffect(int32_t id) override; binder::Status setEffectEnabled(int32_t id, bool enabled) override; binder::Status moveEffectsToIo(const std::vector& ids, int32_t io) override; binder::Status isStreamActive(AudioStreamType stream, int32_t inPastMs, bool* _aidl_return) override; binder::Status isStreamActiveRemotely(AudioStreamType stream, int32_t inPastMs, bool* _aidl_return) override; binder::Status isSourceActive(AudioSource source, bool* _aidl_return) override; binder::Status queryDefaultPreProcessing( int32_t audioSession, Int* count, std::vector* _aidl_return) override; binder::Status addSourceDefaultEffect(const AudioUuid& type, const std::string& opPackageName, const AudioUuid& uuid, int32_t priority, AudioSource source, int32_t* _aidl_return) override; binder::Status addStreamDefaultEffect(const AudioUuid& type, const std::string& opPackageName, const AudioUuid& uuid, int32_t priority, AudioUsage usage, int32_t* _aidl_return) override; binder::Status removeSourceDefaultEffect(int32_t id) override; binder::Status removeStreamDefaultEffect(int32_t id) override; binder::Status setSupportedSystemUsages( const std::vector& systemUsages) override; binder::Status setAllowedCapturePolicy(int32_t uid, int32_t capturePolicy) override; binder::Status getOffloadSupport(const media::audio::common::AudioOffloadInfo& info, media::AudioOffloadMode* _aidl_return) override; binder::Status isDirectOutputSupported(const AudioConfigBase& config, const media::audio::common::AudioAttributes& attributes, bool* _aidl_return) override; binder::Status listAudioPorts(media::AudioPortRole role, media::AudioPortType type, Int* count, std::vector* ports, int32_t* _aidl_return) override; binder::Status listDeclaredDevicePorts(media::AudioPortRole role, std::vector* _aidl_return) override; binder::Status getAudioPort(int portId, media::AudioPortFw* _aidl_return) override; binder::Status createAudioPatch(const media::AudioPatchFw& patch, int32_t handle, int32_t* _aidl_return) override; binder::Status releaseAudioPatch(int32_t handle) override; binder::Status listAudioPatches(Int* count, std::vector* patches, int32_t* _aidl_return) override; binder::Status setAudioPortConfig(const media::AudioPortConfigFw& config) override; binder::Status registerClient(const sp& client) override; binder::Status setAudioPortCallbacksEnabled(bool enabled) override; binder::Status setAudioVolumeGroupCallbacksEnabled(bool enabled) override; binder::Status acquireSoundTriggerSession(media::SoundTriggerSession* _aidl_return) override; binder::Status releaseSoundTriggerSession(int32_t session) override; binder::Status getPhoneState(AudioMode* _aidl_return) override; binder::Status registerPolicyMixes(const std::vector& mixes, bool registration) override; binder::Status updatePolicyMixes( const ::std::vector<::android::media::AudioMixUpdate>& updates) override; binder::Status setUidDeviceAffinities(int32_t uid, const std::vector& devices) override; binder::Status removeUidDeviceAffinities(int32_t uid) override; binder::Status setUserIdDeviceAffinities( int32_t userId, const std::vector& devices) override; binder::Status removeUserIdDeviceAffinities(int32_t userId) override; binder::Status startAudioSource(const media::AudioPortConfigFw& source, const media::audio::common::AudioAttributes& attributes, int32_t* _aidl_return) override; binder::Status stopAudioSource(int32_t portId) override; binder::Status setMasterMono(bool mono) override; binder::Status getMasterMono(bool* _aidl_return) override; binder::Status getStreamVolumeDB(AudioStreamType stream, int32_t index, const AudioDeviceDescription& device, float* _aidl_return) override; binder::Status getSurroundFormats(Int* count, std::vector* formats, std::vector* formatsEnabled) override; binder::Status getReportedSurroundFormats( Int* count, std::vector* formats) override; binder::Status getHwOffloadFormatsSupportedForBluetoothMedia( const AudioDeviceDescription& device, std::vector* _aidl_return) override; binder::Status setSurroundFormatEnabled(const AudioFormatDescription& audioFormat, bool enabled) override; binder::Status setAssistantServicesUids(const std::vector& uids) override; binder::Status setActiveAssistantServicesUids(const std::vector& activeUids) override; binder::Status setA11yServicesUids(const std::vector& uids) override; binder::Status setCurrentImeUid(int32_t uid) override; binder::Status isHapticPlaybackSupported(bool* _aidl_return) override; binder::Status isUltrasoundSupported(bool* _aidl_return) override; binder::Status isHotwordStreamSupported(bool lookbackAudio, bool* _aidl_return) override; binder::Status listAudioProductStrategies( std::vector* _aidl_return) override; binder::Status getProductStrategyFromAudioAttributes( const media::audio::common::AudioAttributes& aa, bool fallbackOnDefault, int32_t* _aidl_return) override; binder::Status listAudioVolumeGroups( std::vector* _aidl_return) override; binder::Status getVolumeGroupFromAudioAttributes( const media::audio::common::AudioAttributes& aa, bool fallbackOnDefault, int32_t* _aidl_return) override; binder::Status setRttEnabled(bool enabled) override; binder::Status isCallScreenModeSupported(bool* _aidl_return) override; binder::Status setDevicesRoleForStrategy( int32_t strategy, media::DeviceRole role, const std::vector& devices) override; binder::Status removeDevicesRoleForStrategy( int32_t strategy, media::DeviceRole role, const std::vector& devices) override; binder::Status clearDevicesRoleForStrategy( int32_t strategy, media::DeviceRole role) override; binder::Status getDevicesForRoleAndStrategy( int32_t strategy, media::DeviceRole role, std::vector* _aidl_return) override; binder::Status setDevicesRoleForCapturePreset( AudioSource audioSource, media::DeviceRole role, const std::vector& devices) override; binder::Status addDevicesRoleForCapturePreset( AudioSource audioSource, media::DeviceRole role, const std::vector& devices) override; binder::Status removeDevicesRoleForCapturePreset( AudioSource audioSource, media::DeviceRole role, const std::vector& devices) override; binder::Status clearDevicesRoleForCapturePreset(AudioSource audioSource, media::DeviceRole role) override; binder::Status getDevicesForRoleAndCapturePreset( AudioSource audioSource, media::DeviceRole role, std::vector* _aidl_return) override; binder::Status registerSoundTriggerCaptureStateListener( const sp& listener, bool* _aidl_return) override; binder::Status getSpatializer(const sp& callback, media::GetSpatializerResponse* _aidl_return) override; binder::Status canBeSpatialized( const std::optional& attr, const std::optional& config, const std::vector& devices, bool* _aidl_return) override; binder::Status getDirectPlaybackSupport(const media::audio::common::AudioAttributes& attr, const AudioConfig& config, media::AudioDirectMode* _aidl_return) override; binder::Status getDirectProfilesForAttributes(const media::audio::common::AudioAttributes& attr, std::vector* _aidl_return) override; binder::Status getSupportedMixerAttributes( int32_t portId, std::vector* _aidl_return) override; binder::Status setPreferredMixerAttributes( const media::audio::common::AudioAttributes& attr, int32_t portId, int32_t uid, const media::AudioMixerAttributesInternal& mixerAttr) override; binder::Status getPreferredMixerAttributes( const media::audio::common::AudioAttributes& attr, int32_t portId, std::optional* _aidl_return) override; binder::Status clearPreferredMixerAttributes(const media::audio::common::AudioAttributes& attr, int32_t portId, int32_t uid) override; binder::Status getRegisteredPolicyMixes( std::vector <::android::media::AudioMix>* mixes) override; // Should only be called by AudioService to push permission data down to audioserver binder::Status getPermissionController(sp* out) override; status_t onTransact(uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) override; // -- IAudioPolicyLocal methods const IPermissionProvider& getPermissionProvider() const override; // IBinder::DeathRecipient virtual void binderDied(const wp& who); // RefBase virtual void onFirstRef(); // Commence initialization when AudioSystem is ready. void onAudioSystemReady(); // // Helpers for the struct audio_policy_service_ops implementation. // This is used by the audio policy manager for certain operations that // are implemented by the policy service. // virtual void setParameters(audio_io_handle_t ioHandle, const char *keyValuePairs, int delayMs); virtual status_t setStreamVolume(audio_stream_type_t stream, float volume, audio_io_handle_t output, int delayMs = 0); virtual status_t setVoiceVolume(float volume, int delayMs = 0); void doOnNewAudioModulesAvailable(); status_t doStopOutput(audio_port_handle_t portId); void doReleaseOutput(audio_port_handle_t portId); status_t clientCreateAudioPatch(const struct audio_patch *patch, audio_patch_handle_t *handle, int delayMs); status_t clientReleaseAudioPatch(audio_patch_handle_t handle, int delayMs); virtual status_t clientSetAudioPortConfig(const struct audio_port_config *config, int delayMs); void removeNotificationClient(uid_t uid, pid_t pid); void onAudioPortListUpdate(); void doOnAudioPortListUpdate(); void onAudioPatchListUpdate(); void doOnAudioPatchListUpdate(); void onDynamicPolicyMixStateUpdate(const String8& regId, int32_t state); void doOnDynamicPolicyMixStateUpdate(const String8& regId, int32_t state); void onRecordingConfigurationUpdate(int event, const record_client_info_t *clientInfo, const audio_config_base_t *clientConfig, std::vector clientEffects, const audio_config_base_t *deviceConfig, std::vector effects, audio_patch_handle_t patchHandle, audio_source_t source); void doOnRecordingConfigurationUpdate(int event, const record_client_info_t *clientInfo, const audio_config_base_t *clientConfig, std::vector clientEffects, const audio_config_base_t *deviceConfig, std::vector effects, audio_patch_handle_t patchHandle, audio_source_t source); void onAudioVolumeGroupChanged(volume_group_t group, int flags); void doOnAudioVolumeGroupChanged(volume_group_t group, int flags); void onRoutingUpdated(); void doOnRoutingUpdated(); void onVolumeRangeInitRequest(); void doOnVolumeRangeInitRequest(); /** * Spatializer SpatializerPolicyCallback implementation. * onCheckSpatializer() sends an event on mOutputCommandThread which executes * doOnCheckSpatializer() to check if a Spatializer output must be opened or closed * by audio policy manager and attach/detach the spatializer effect accordingly. */ void onCheckSpatializer() override; void onCheckSpatializer_l() REQUIRES(mMutex); void doOnCheckSpatializer(); void onUpdateActiveSpatializerTracks_l() REQUIRES(mMutex); void doOnUpdateActiveSpatializerTracks(); void setEffectSuspended(int effectId, audio_session_t sessionId, bool suspended); private: AudioPolicyService() ANDROID_API; virtual ~AudioPolicyService(); status_t dumpInternals(int fd) REQUIRES(mMutex); // Handles binder shell commands virtual status_t shellCommand(int in, int out, int err, Vector& args); // Sets whether the given UID records only silence virtual void setAppState_l(sp client, app_state_t state) REQUIRES(mMutex); // Overrides the UID state as if it is idle status_t handleSetUidState(Vector& args, int err); // Clears the override for the UID state status_t handleResetUidState(Vector& args, int err); // Gets the UID state status_t handleGetUidState(Vector& args, int out, int err); // Prints the shell command help status_t printHelp(int out); std::string getDeviceTypeStrForPortId(audio_port_handle_t portId); status_t getAudioPolicyEffects(sp& audioPolicyEffects); app_state_t apmStatFromAmState(int amState); bool isSupportedSystemUsage(audio_usage_t usage); status_t validateUsage(const audio_attributes_t& attr); status_t validateUsage(const audio_attributes_t& attr, const AttributionSourceState& attributionSource); void updateUidStates(); void updateUidStates_l() REQUIRES(mMutex); void silenceAllRecordings_l() REQUIRES(mMutex); static bool isVirtualSource(audio_source_t source); /** returns true if the audio source must be silenced when the corresponding app op is denied. * false if the audio source does not actually capture from the microphone while still * being mapped to app op OP_RECORD_AUDIO and not a specialized op tracked separately. * See getOpForSource(). */ static bool isAppOpSource(audio_source_t source); status_t registerOutput(audio_io_handle_t output, const audio_config_base_t& config, const audio_output_flags_t flags); status_t unregisterOutput(audio_io_handle_t output); // If recording we need to make sure the UID is allowed to do that. If the UID is idle // then it cannot record and gets buffers with zeros - silence. As soon as the UID // transitions to an active state we will start reporting buffers with data. This approach // transparently handles recording while the UID transitions between idle/active state // avoiding to get stuck in a state receiving non-empty buffers while idle or in a state // receiving empty buffers while active. class UidPolicy : public BnUidObserver, public virtual IBinder::DeathRecipient { public: explicit UidPolicy(wp service) : mService(service), mObserverRegistered(false), mCurrentImeUid(0), mRttEnabled(false) {} void registerSelf(); void unregisterSelf(); // IBinder::DeathRecipient implementation void binderDied(const wp &who) override; bool isUidActive(uid_t uid); int getUidState(uid_t uid); void setAssistantUids(const std::vector& uids); bool isAssistantUid(uid_t uid); void setActiveAssistantUids(const std::vector& activeUids); bool isActiveAssistantUid(uid_t uid); void setA11yUids(const std::vector& uids) { mA11yUids.clear(); mA11yUids = uids; } bool isA11yUid(uid_t uid); bool isA11yOnTop(); void setCurrentImeUid(uid_t uid) { mCurrentImeUid = uid; } bool isCurrentImeUid(uid_t uid) { return uid == mCurrentImeUid; } void setRttEnabled(bool enabled) { mRttEnabled = enabled; } bool isRttEnabled() { return mRttEnabled; } // BnUidObserver implementation void onUidActive(uid_t uid) override; void onUidGone(uid_t uid, bool disabled) override; void onUidIdle(uid_t uid, bool disabled) override; void onUidStateChanged(uid_t uid, int32_t procState, int64_t procStateSeq, int32_t capability) override; void onUidProcAdjChanged(uid_t uid, int32_t adj) override; void updateUid(std::unordered_map> *uids, uid_t uid, bool active, int state, bool insert); void dumpInternals(int fd); private: void notifyService(); void updateUidLocked(std::unordered_map> *uids, uid_t uid, bool active, int state, bool insert); void checkRegistered(); wp mService; audio_utils::mutex mMutex{audio_utils::MutexOrder::kUidPolicy_Mutex}; ActivityManager mAm; bool mObserverRegistered = false; std::unordered_map> mCachedUids GUARDED_BY(mMutex); std::vector mAssistantUids; std::vector mActiveAssistantUids; std::vector mA11yUids; uid_t mCurrentImeUid = -1; bool mRttEnabled = false; }; // If sensor privacy is enabled then all apps, including those that are active, should be // prevented from recording. This is handled similar to idle UIDs, any app that attempts // to record while sensor privacy is enabled will receive buffers with zeros. As soon as // sensor privacy is disabled active apps will receive the expected data when recording. class SensorPrivacyPolicy : public hardware::BnSensorPrivacyListener { public: explicit SensorPrivacyPolicy(wp service) : mService(service) {} void registerSelf(); void unregisterSelf(); bool isSensorPrivacyEnabled(); binder::Status onSensorPrivacyChanged(int toggleType, int sensor, bool enabled); binder::Status onSensorPrivacyStateChanged(int, int, int) { return binder::Status::ok(); } private: wp mService; std::atomic_bool mSensorPrivacyEnabled = false; }; // Thread used to send audio config commands to audio flinger // For audio config commands, it is necessary because audio flinger requires that the calling // process (user) has permission to modify audio settings. public: class AudioCommandThread : public Thread { class AudioCommand; public: // commands for tone AudioCommand enum { SET_VOLUME, SET_PARAMETERS, SET_VOICE_VOLUME, STOP_OUTPUT, RELEASE_OUTPUT, CREATE_AUDIO_PATCH, RELEASE_AUDIO_PATCH, UPDATE_AUDIOPORT_LIST, UPDATE_AUDIOPATCH_LIST, CHANGED_AUDIOVOLUMEGROUP, SET_AUDIOPORT_CONFIG, DYN_POLICY_MIX_STATE_UPDATE, RECORDING_CONFIGURATION_UPDATE, SET_EFFECT_SUSPENDED, AUDIO_MODULES_UPDATE, ROUTING_UPDATED, UPDATE_UID_STATES, CHECK_SPATIALIZER_OUTPUT, // verify if spatializer effect should be created or moved UPDATE_ACTIVE_SPATIALIZER_TRACKS, // Update active track counts on spalializer output VOL_RANGE_INIT_REQUEST, // request to reset the volume range indices }; AudioCommandThread (String8 name, const wp& service); virtual ~AudioCommandThread(); status_t dump(int fd); // Thread virtuals virtual void onFirstRef(); virtual bool threadLoop(); void exit(); status_t volumeCommand(audio_stream_type_t stream, float volume, audio_io_handle_t output, int delayMs = 0); status_t parametersCommand(audio_io_handle_t ioHandle, const char *keyValuePairs, int delayMs = 0); status_t voiceVolumeCommand(float volume, int delayMs = 0); void stopOutputCommand(audio_port_handle_t portId); void releaseOutputCommand(audio_port_handle_t portId); status_t sendCommand(sp& command, int delayMs = 0); void insertCommand_l(sp& command, int delayMs = 0); status_t createAudioPatchCommand(const struct audio_patch *patch, audio_patch_handle_t *handle, int delayMs); status_t releaseAudioPatchCommand(audio_patch_handle_t handle, int delayMs); void updateAudioPortListCommand(); void updateAudioPatchListCommand(); void changeAudioVolumeGroupCommand(volume_group_t group, int flags); status_t setAudioPortConfigCommand(const struct audio_port_config *config, int delayMs); void dynamicPolicyMixStateUpdateCommand(const String8& regId, int32_t state); void recordingConfigurationUpdateCommand( int event, const record_client_info_t *clientInfo, const audio_config_base_t *clientConfig, std::vector clientEffects, const audio_config_base_t *deviceConfig, std::vector effects, audio_patch_handle_t patchHandle, audio_source_t source); void setEffectSuspendedCommand(int effectId, audio_session_t sessionId, bool suspended); void audioModulesUpdateCommand(); void routingChangedCommand(); void updateUidStatesCommand(); void checkSpatializerCommand(); void updateActiveSpatializerTracksCommand(); void volRangeInitReqCommand(); void insertCommand_l(AudioCommand *command, int delayMs = 0); private: class AudioCommandData; // descriptor for requested tone playback event class AudioCommand: public RefBase { public: AudioCommand() : mCommand(-1), mStatus(NO_ERROR), mWaitStatus(false) {} void dump(char* buffer, size_t size); int mCommand; // SET_VOLUME, SET_PARAMETERS... nsecs_t mTime; // time stamp audio_utils::mutex mMutex{audio_utils::MutexOrder::kAudioCommand_Mutex}; audio_utils::condition_variable mCond; // condition for status return status_t mStatus; // command status bool mWaitStatus; // true if caller is waiting for status sp mParam; // command specific parameter data }; class AudioCommandData: public RefBase { public: virtual ~AudioCommandData() {} protected: AudioCommandData() {} }; class VolumeData : public AudioCommandData { public: audio_stream_type_t mStream; float mVolume; audio_io_handle_t mIO; }; class ParametersData : public AudioCommandData { public: audio_io_handle_t mIO; String8 mKeyValuePairs; }; class VoiceVolumeData : public AudioCommandData { public: float mVolume; }; class StopOutputData : public AudioCommandData { public: audio_port_handle_t mPortId; }; class ReleaseOutputData : public AudioCommandData { public: audio_port_handle_t mPortId; }; class CreateAudioPatchData : public AudioCommandData { public: struct audio_patch mPatch; audio_patch_handle_t mHandle; }; class ReleaseAudioPatchData : public AudioCommandData { public: audio_patch_handle_t mHandle; }; class AudioVolumeGroupData : public AudioCommandData { public: volume_group_t mGroup; int mFlags; }; class SetAudioPortConfigData : public AudioCommandData { public: struct audio_port_config mConfig; }; class DynPolicyMixStateUpdateData : public AudioCommandData { public: String8 mRegId; int32_t mState; }; class RecordingConfigurationUpdateData : public AudioCommandData { public: int mEvent; record_client_info_t mClientInfo; struct audio_config_base mClientConfig; std::vector mClientEffects; struct audio_config_base mDeviceConfig; std::vector mEffects; audio_patch_handle_t mPatchHandle; audio_source_t mSource; }; class SetEffectSuspendedData : public AudioCommandData { public: int mEffectId; audio_session_t mSessionId; bool mSuspended; }; mutable audio_utils::mutex mMutex{audio_utils::MutexOrder::kCommandThread_Mutex}; audio_utils::condition_variable mWaitWorkCV; Vector < sp > mAudioCommands; // list of pending commands sp mLastCommand; // last processed command (used by dump) String8 mName; // string used by wake lock fo delayed commands wp mService; }; private: class AudioPolicyClient : public AudioPolicyClientInterface { public: explicit AudioPolicyClient(AudioPolicyService *service) : mAudioPolicyService(service) {} virtual ~AudioPolicyClient() {} virtual status_t getAudioPolicyConfig(media::AudioPolicyConfig *config); // // Audio HW module functions // // loads a HW module. virtual audio_module_handle_t loadHwModule(const char *name); // // Audio output Control functions // // opens an audio output with the requested parameters. The parameter values can indicate to use the default values // in case the audio policy manager has no specific requirements for the output being opened. // When the function returns, the parameter values reflect the actual values used by the audio hardware output stream. // The audio policy manager can check if the proposed parameters are suitable or not and act accordingly. virtual status_t openOutput(audio_module_handle_t module, audio_io_handle_t *output, audio_config_t *halConfig, audio_config_base_t *mixerConfig, const sp& device, uint32_t *latencyMs, audio_output_flags_t *flags, audio_attributes_t attributes); // creates a special output that is duplicated to the two outputs passed as arguments. The duplication is performed by // a special mixer thread in the AudioFlinger. virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1, audio_io_handle_t output2); // closes the output stream virtual status_t closeOutput(audio_io_handle_t output); // suspends the output. When an output is suspended, the corresponding audio hardware output stream is placed in // standby and the AudioTracks attached to the mixer thread are still processed but the output mix is discarded. virtual status_t suspendOutput(audio_io_handle_t output); // restores a suspended output. virtual status_t restoreOutput(audio_io_handle_t output); // // Audio input Control functions // // opens an audio input virtual audio_io_handle_t openInput(audio_module_handle_t module, audio_io_handle_t *input, audio_config_t *config, audio_devices_t *devices, const String8& address, audio_source_t source, audio_input_flags_t flags); // closes an audio input virtual status_t closeInput(audio_io_handle_t input); // // misc control functions // // set a stream volume for a particular output. For the same user setting, a given stream type can have different volumes // for each output (destination device) it is attached to. virtual status_t setStreamVolume(audio_stream_type_t stream, float volume, audio_io_handle_t output, int delayMs = 0); // function enabling to send proprietary informations directly from audio policy manager to audio hardware interface. virtual void setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs, int delayMs = 0); // function enabling to receive proprietary informations directly from audio hardware interface to audio policy manager. virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys); // set down link audio volume. virtual status_t setVoiceVolume(float volume, int delayMs = 0); // move effect to the specified output virtual status_t moveEffects(audio_session_t session, audio_io_handle_t srcOutput, audio_io_handle_t dstOutput); void setEffectSuspended(int effectId, audio_session_t sessionId, bool suspended) override; /* Create a patch between several source and sink ports */ virtual status_t createAudioPatch(const struct audio_patch *patch, audio_patch_handle_t *handle, int delayMs); /* Release a patch */ virtual status_t releaseAudioPatch(audio_patch_handle_t handle, int delayMs); /* Set audio port configuration */ virtual status_t setAudioPortConfig(const struct audio_port_config *config, int delayMs); virtual void onAudioPortListUpdate(); virtual void onAudioPatchListUpdate(); virtual void onDynamicPolicyMixStateUpdate(String8 regId, int32_t state); virtual void onRecordingConfigurationUpdate(int event, const record_client_info_t *clientInfo, const audio_config_base_t *clientConfig, std::vector clientEffects, const audio_config_base_t *deviceConfig, std::vector effects, audio_patch_handle_t patchHandle, audio_source_t source); virtual void onAudioVolumeGroupChanged(volume_group_t group, int flags); virtual void onRoutingUpdated(); virtual void onVolumeRangeInitRequest(); virtual audio_unique_id_t newAudioUniqueId(audio_unique_id_use_t use); void setSoundTriggerCaptureState(bool active) override; status_t getAudioPort(struct audio_port_v7 *port) override; status_t updateSecondaryOutputs( const TrackSecondaryOutputsMap& trackSecondaryOutputs) override; status_t setDeviceConnectedState( const struct audio_port_v7 *port, media::DeviceConnectedState state) override; status_t invalidateTracks(const std::vector& portIds) override; status_t getAudioMixPort(const struct audio_port_v7 *devicePort, struct audio_port_v7 *port) override; status_t setTracksInternalMute( const std::vector& tracksInternalMute) override; private: AudioPolicyService *mAudioPolicyService; }; // --- Notification Client --- class NotificationClient : public IBinder::DeathRecipient { public: NotificationClient(const sp& service, const sp& client, uid_t uid, pid_t pid); virtual ~NotificationClient(); void onAudioPortListUpdate(); void onAudioPatchListUpdate(); void onDynamicPolicyMixStateUpdate(const String8& regId, int32_t state); void onAudioVolumeGroupChanged(volume_group_t group, int flags); void onRecordingConfigurationUpdate( int event, const record_client_info_t *clientInfo, const audio_config_base_t *clientConfig, std::vector clientEffects, const audio_config_base_t *deviceConfig, std::vector effects, audio_patch_handle_t patchHandle, audio_source_t source); void onRoutingUpdated(); void onVolumeRangeInitRequest(); void setAudioPortCallbacksEnabled(bool enabled); void setAudioVolumeGroupCallbacksEnabled(bool enabled); uid_t uid() { return mUid; } // IBinder::DeathRecipient virtual void binderDied(const wp& who); private: NotificationClient(const NotificationClient&); NotificationClient& operator = (const NotificationClient&); const wp mService; const uid_t mUid; const pid_t mPid; const sp mAudioPolicyServiceClient; bool mAudioPortCallbacksEnabled; bool mAudioVolumeGroupCallbacksEnabled; }; public: class AudioClient : public virtual RefBase { public: AudioClient(const audio_attributes_t attributes, const audio_io_handle_t io, const AttributionSourceState& attributionSource, const audio_session_t session, audio_port_handle_t portId, const audio_port_handle_t deviceId) : attributes(attributes), io(io), attributionSource( attributionSource), session(session), portId(portId), deviceId(deviceId), active(false) {} ~AudioClient() override = default; const audio_attributes_t attributes; // source, flags ... const audio_io_handle_t io; // audio HAL stream IO handle const AttributionSourceState attributionSource; //client attributionsource const audio_session_t session; // audio session ID const audio_port_handle_t portId; const audio_port_handle_t deviceId; // selected input device port ID bool active; // Playback/Capture is active or inactive }; private: // --- AudioPlaybackClient --- // Information about each registered AudioTrack client // (between calls to getOutputForAttr() and releaseOutput()) class AudioPlaybackClient : public AudioClient { public: AudioPlaybackClient(const audio_attributes_t attributes, const audio_io_handle_t io, AttributionSourceState attributionSource, const audio_session_t session, audio_port_handle_t portId, audio_port_handle_t deviceId, audio_stream_type_t stream, bool isSpatialized) : AudioClient(attributes, io, attributionSource, session, portId, deviceId), stream(stream), isSpatialized(isSpatialized) {} ~AudioPlaybackClient() override = default; const audio_stream_type_t stream; const bool isSpatialized; }; void getPlaybackClientAndEffects(audio_port_handle_t portId, sp& client, sp& effects, const char *context); // A class automatically clearing and restoring binder caller identity inside // a code block (scoped variable) // Declare one systematically before calling AudioPolicyManager methods so that they are // executed with the same level of privilege as audioserver process. class AutoCallerClear { public: AutoCallerClear() : mToken(IPCThreadState::self()->clearCallingIdentity()) {} ~AutoCallerClear() { IPCThreadState::self()->restoreCallingIdentity(mToken); } private: const int64_t mToken; }; // Internal dump utilities. status_t dumpPermissionDenial(int fd); void loadAudioPolicyManager(); void unloadAudioPolicyManager(); /** * Returns the number of active audio tracks on the specified output mixer. * The query can be specified to only include spatialized audio tracks or consider * all tracks. * @param output the I/O handle of the output mixer to consider * @param spatializedOnly true if only spatialized tracks should be considered * @return the number of active tracks. */ size_t countActiveClientsOnOutput_l( audio_io_handle_t output, bool spatializedOnly = true) REQUIRES(mMutex); mutable audio_utils::mutex mMutex{audio_utils::MutexOrder::kAudioPolicyService_Mutex}; // prevents concurrent access to AudioPolicy manager functions changing // device connection state or routing. // mMutex protects AudioPolicyManager methods that can call into audio flinger // and possibly back in to audio policy service and acquire mEffectsLock. sp mAudioCommandThread; // audio commands thread sp mOutputCommandThread; // process stop and release output AudioPolicyInterface *mAudioPolicyManager; AudioPolicyClient *mAudioPolicyClient; std::vector mSupportedSystemUsages; mutable audio_utils::mutex mNotificationClientsMutex{ audio_utils::MutexOrder::kAudioPolicyService_NotificationClientsMutex}; DefaultKeyedVector> mNotificationClients GUARDED_BY(mNotificationClientsMutex); // Manage all effects configured in audio_effects.conf // never hold AudioPolicyService::mMutex when calling AudioPolicyEffects methods as // those can call back into AudioPolicyService methods and try to acquire the mutex sp mAudioPolicyEffects GUARDED_BY(mMutex); audio_mode_t mPhoneState GUARDED_BY(mMutex); uid_t mPhoneStateOwnerUid GUARDED_BY(mMutex); sp mUidPolicy GUARDED_BY(mMutex); sp mSensorPrivacyPolicy GUARDED_BY(mMutex); DefaultKeyedVector> mAudioRecordClients GUARDED_BY(mMutex); DefaultKeyedVector> mAudioPlaybackClients GUARDED_BY(mMutex); MediaPackageManager mPackageManager; // To check allowPlaybackCapture CaptureStateNotifier mCaptureStateNotifier; // created in onFirstRef() and never cleared: does not need to be guarded by mMutex sp mSpatializer; void *mLibraryHandle = nullptr; CreateAudioPolicyManagerInstance mCreateAudioPolicyManager; DestroyAudioPolicyManagerInstance mDestroyAudioPolicyManager; std::unique_ptr mUsecaseValidator; const sp mPermissionController; }; } // namespace android #endif // ANDROID_AUDIOPOLICYSERVICE_H